1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices.
6 * Copyright (C) 2005 Sensoria Corp
7 * Derived from the unified SMC91x driver by Nicolas Pitre
8 * and the smsc911x.c reference driver by SMSC
11 * watchdog = TX watchdog timeout
12 * tx_fifo_kb = Size of TX FIFO in KB
15 * 04/16/05 Dustin McIntire Initial version
17 static const char version[] =
18 "smc911x.c: v1.0 04-16-2005 by Dustin McIntire <dustin@sensoria.com>\n";
20 /* Debugging options */
21 #define ENABLE_SMC_DEBUG_RX 0
22 #define ENABLE_SMC_DEBUG_TX 0
23 #define ENABLE_SMC_DEBUG_DMA 0
24 #define ENABLE_SMC_DEBUG_PKTS 0
25 #define ENABLE_SMC_DEBUG_MISC 0
26 #define ENABLE_SMC_DEBUG_FUNC 0
28 #define SMC_DEBUG_RX ((ENABLE_SMC_DEBUG_RX ? 1 : 0) << 0)
29 #define SMC_DEBUG_TX ((ENABLE_SMC_DEBUG_TX ? 1 : 0) << 1)
30 #define SMC_DEBUG_DMA ((ENABLE_SMC_DEBUG_DMA ? 1 : 0) << 2)
31 #define SMC_DEBUG_PKTS ((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3)
32 #define SMC_DEBUG_MISC ((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4)
33 #define SMC_DEBUG_FUNC ((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5)
36 #define SMC_DEBUG ( SMC_DEBUG_RX | \
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/sched.h>
48 #include <linux/delay.h>
49 #include <linux/interrupt.h>
50 #include <linux/errno.h>
51 #include <linux/ioport.h>
52 #include <linux/crc32.h>
53 #include <linux/device.h>
54 #include <linux/platform_device.h>
55 #include <linux/spinlock.h>
56 #include <linux/ethtool.h>
57 #include <linux/mii.h>
58 #include <linux/workqueue.h>
60 #include <linux/netdevice.h>
61 #include <linux/etherdevice.h>
62 #include <linux/skbuff.h>
64 #include <linux/dmaengine.h>
71 * Transmit timeout, default 5 seconds.
73 static int watchdog = 5000;
74 module_param(watchdog, int, 0400);
75 MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
77 static int tx_fifo_kb=8;
78 module_param(tx_fifo_kb, int, 0400);
79 MODULE_PARM_DESC(tx_fifo_kb,"transmit FIFO size in KB (1<x<15)(default=8)");
81 MODULE_LICENSE("GPL");
82 MODULE_ALIAS("platform:smc911x");
85 * The internal workings of the driver. If you are changing anything
86 * here with the SMC stuff, you should have the datasheet and know
89 #define CARDNAME "smc911x"
92 * Use power-down feature of the chip
97 #define DBG(n, dev, args...) \
99 if (SMC_DEBUG & (n)) \
100 netdev_dbg(dev, args); \
103 #define PRINTK(dev, args...) netdev_info(dev, args)
105 #define DBG(n, dev, args...) do { } while (0)
106 #define PRINTK(dev, args...) netdev_dbg(dev, args)
109 #if SMC_DEBUG_PKTS > 0
110 static void PRINT_PKT(u_char *buf, int length)
117 remainder = length % 16;
119 for (i = 0; i < lines ; i ++) {
122 for (cur = 0; cur < 8; cur++) {
126 pr_cont("%02x%02x ", a, b);
131 for (i = 0; i < remainder/2 ; i++) {
135 pr_cont("%02x%02x ", a, b);
140 #define PRINT_PKT(x...) do { } while (0)
144 /* this enables an interrupt in the interrupt mask register */
145 #define SMC_ENABLE_INT(lp, x) do { \
146 unsigned int __mask; \
147 __mask = SMC_GET_INT_EN((lp)); \
149 SMC_SET_INT_EN((lp), __mask); \
152 /* this disables an interrupt from the interrupt mask register */
153 #define SMC_DISABLE_INT(lp, x) do { \
154 unsigned int __mask; \
155 __mask = SMC_GET_INT_EN((lp)); \
157 SMC_SET_INT_EN((lp), __mask); \
161 * this does a soft reset on the device
163 static void smc911x_reset(struct net_device *dev)
165 struct smc911x_local *lp = netdev_priv(dev);
166 unsigned int reg, timeout=0, resets=1, irq_cfg;
169 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
171 /* Take out of PM setting first */
172 if ((SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_) == 0) {
173 /* Write to the bytetest will take out of powerdown */
174 SMC_SET_BYTE_TEST(lp, 0);
178 reg = SMC_GET_PMT_CTRL(lp) & PMT_CTRL_READY_;
179 } while (--timeout && !reg);
181 PRINTK(dev, "smc911x_reset timeout waiting for PM restore\n");
186 /* Disable all interrupts */
187 spin_lock_irqsave(&lp->lock, flags);
188 SMC_SET_INT_EN(lp, 0);
189 spin_unlock_irqrestore(&lp->lock, flags);
192 SMC_SET_HW_CFG(lp, HW_CFG_SRST_);
196 reg = SMC_GET_HW_CFG(lp);
197 /* If chip indicates reset timeout then try again */
198 if (reg & HW_CFG_SRST_TO_) {
199 PRINTK(dev, "chip reset timeout, retrying...\n");
203 } while (--timeout && (reg & HW_CFG_SRST_));
206 PRINTK(dev, "smc911x_reset timeout waiting for reset\n");
210 /* make sure EEPROM has finished loading before setting GPIO_CFG */
212 while (--timeout && (SMC_GET_E2P_CMD(lp) & E2P_CMD_EPC_BUSY_))
216 PRINTK(dev, "smc911x_reset timeout waiting for EEPROM busy\n");
220 /* Initialize interrupts */
221 SMC_SET_INT_EN(lp, 0);
224 /* Reset the FIFO level and flow control settings */
225 SMC_SET_HW_CFG(lp, (lp->tx_fifo_kb & 0xF) << 16);
226 //TODO: Figure out what appropriate pause time is
227 SMC_SET_FLOW(lp, FLOW_FCPT_ | FLOW_FCEN_);
228 SMC_SET_AFC_CFG(lp, lp->afc_cfg);
231 /* Set to LED outputs */
232 SMC_SET_GPIO_CFG(lp, 0x70070000);
235 * Deassert IRQ for 1*10us for edge type interrupts
236 * and drive IRQ pin push-pull
238 irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
239 #ifdef SMC_DYNAMIC_BUS_CONFIG
240 if (lp->cfg.irq_polarity)
241 irq_cfg |= INT_CFG_IRQ_POL_;
243 SMC_SET_IRQ_CFG(lp, irq_cfg);
245 /* clear anything saved */
246 if (lp->pending_tx_skb != NULL) {
247 dev_kfree_skb (lp->pending_tx_skb);
248 lp->pending_tx_skb = NULL;
249 dev->stats.tx_errors++;
250 dev->stats.tx_aborted_errors++;
255 * Enable Interrupts, Receive, and Transmit
257 static void smc911x_enable(struct net_device *dev)
259 struct smc911x_local *lp = netdev_priv(dev);
260 unsigned mask, cfg, cr;
263 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
265 spin_lock_irqsave(&lp->lock, flags);
267 SMC_SET_MAC_ADDR(lp, dev->dev_addr);
270 cfg = SMC_GET_HW_CFG(lp);
271 cfg &= HW_CFG_TX_FIF_SZ_ | 0xFFF;
273 SMC_SET_HW_CFG(lp, cfg);
274 SMC_SET_FIFO_TDA(lp, 0xFF);
275 /* Update TX stats on every 64 packets received or every 1 sec */
276 SMC_SET_FIFO_TSL(lp, 64);
277 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
279 SMC_GET_MAC_CR(lp, cr);
280 cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_;
281 SMC_SET_MAC_CR(lp, cr);
282 SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_);
284 /* Add 2 byte padding to start of packets */
285 SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_);
287 /* Turn on receiver and enable RX */
288 if (cr & MAC_CR_RXEN_)
289 DBG(SMC_DEBUG_RX, dev, "Receiver already enabled\n");
291 SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_);
293 /* Interrupt on every received packet */
294 SMC_SET_FIFO_RSA(lp, 0x01);
295 SMC_SET_FIFO_RSL(lp, 0x00);
297 /* now, enable interrupts */
298 mask = INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_ | INT_EN_RSFL_EN_ |
299 INT_EN_GPT_INT_EN_ | INT_EN_RXDFH_INT_EN_ | INT_EN_RXE_EN_ |
301 if (IS_REV_A(lp->revision))
302 mask|=INT_EN_RDFL_EN_;
304 mask|=INT_EN_RDFO_EN_;
306 SMC_ENABLE_INT(lp, mask);
308 spin_unlock_irqrestore(&lp->lock, flags);
312 * this puts the device in an inactive state
314 static void smc911x_shutdown(struct net_device *dev)
316 struct smc911x_local *lp = netdev_priv(dev);
320 DBG(SMC_DEBUG_FUNC, dev, "%s: --> %s\n", CARDNAME, __func__);
323 SMC_SET_INT_EN(lp, 0);
325 /* Turn of Rx and TX */
326 spin_lock_irqsave(&lp->lock, flags);
327 SMC_GET_MAC_CR(lp, cr);
328 cr &= ~(MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
329 SMC_SET_MAC_CR(lp, cr);
330 SMC_SET_TX_CFG(lp, TX_CFG_STOP_TX_);
331 spin_unlock_irqrestore(&lp->lock, flags);
334 static inline void smc911x_drop_pkt(struct net_device *dev)
336 struct smc911x_local *lp = netdev_priv(dev);
337 unsigned int fifo_count, timeout, reg;
339 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "%s: --> %s\n",
341 fifo_count = SMC_GET_RX_FIFO_INF(lp) & 0xFFFF;
342 if (fifo_count <= 4) {
343 /* Manually dump the packet data */
347 /* Fast forward through the bad packet */
348 SMC_SET_RX_DP_CTRL(lp, RX_DP_CTRL_FFWD_BUSY_);
352 reg = SMC_GET_RX_DP_CTRL(lp) & RX_DP_CTRL_FFWD_BUSY_;
353 } while (--timeout && reg);
355 PRINTK(dev, "timeout waiting for RX fast forward\n");
361 * This is the procedure to handle the receipt of a packet.
362 * It should be called after checking for packet presence in
363 * the RX status FIFO. It must be called with the spin lock
366 static inline void smc911x_rcv(struct net_device *dev)
368 struct smc911x_local *lp = netdev_priv(dev);
369 unsigned int pkt_len, status;
373 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_RX, dev, "--> %s\n",
375 status = SMC_GET_RX_STS_FIFO(lp);
376 DBG(SMC_DEBUG_RX, dev, "Rx pkt len %d status 0x%08x\n",
377 (status & 0x3fff0000) >> 16, status & 0xc000ffff);
378 pkt_len = (status & RX_STS_PKT_LEN_) >> 16;
379 if (status & RX_STS_ES_) {
380 /* Deal with a bad packet */
381 dev->stats.rx_errors++;
382 if (status & RX_STS_CRC_ERR_)
383 dev->stats.rx_crc_errors++;
385 if (status & RX_STS_LEN_ERR_)
386 dev->stats.rx_length_errors++;
387 if (status & RX_STS_MCAST_)
388 dev->stats.multicast++;
390 /* Remove the bad packet data from the RX FIFO */
391 smc911x_drop_pkt(dev);
393 /* Receive a valid packet */
394 /* Alloc a buffer with extra room for DMA alignment */
395 skb = netdev_alloc_skb(dev, pkt_len+32);
396 if (unlikely(skb == NULL)) {
397 PRINTK(dev, "Low memory, rcvd packet dropped.\n");
398 dev->stats.rx_dropped++;
399 smc911x_drop_pkt(dev);
402 /* Align IP header to 32 bits
403 * Note that the device is configured to add a 2
404 * byte padding to the packet start, so we really
405 * want to write to the orignal data pointer */
408 skb_put(skb,pkt_len-4);
412 /* Lower the FIFO threshold if possible */
413 fifo = SMC_GET_FIFO_INT(lp);
414 if (fifo & 0xFF) fifo--;
415 DBG(SMC_DEBUG_RX, dev, "Setting RX stat FIFO threshold to %d\n",
417 SMC_SET_FIFO_INT(lp, fifo);
419 SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN16_ | ((2<<8) & RX_CFG_RXDOFF_));
420 lp->rxdma_active = 1;
421 lp->current_rx_skb = skb;
422 SMC_PULL_DATA(lp, data, (pkt_len+2+15) & ~15);
423 /* Packet processing deferred to DMA RX interrupt */
426 SMC_SET_RX_CFG(lp, RX_CFG_RX_END_ALGN4_ | ((2<<8) & RX_CFG_RXDOFF_));
427 SMC_PULL_DATA(lp, data, pkt_len+2+3);
429 DBG(SMC_DEBUG_PKTS, dev, "Received packet\n");
430 PRINT_PKT(data, ((pkt_len - 4) <= 64) ? pkt_len - 4 : 64);
431 skb->protocol = eth_type_trans(skb, dev);
433 dev->stats.rx_packets++;
434 dev->stats.rx_bytes += pkt_len-4;
440 * This is called to actually send a packet to the chip.
442 static void smc911x_hardware_send_pkt(struct net_device *dev)
444 struct smc911x_local *lp = netdev_priv(dev);
446 unsigned int cmdA, cmdB, len;
449 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n", __func__);
450 BUG_ON(lp->pending_tx_skb == NULL);
452 skb = lp->pending_tx_skb;
453 lp->pending_tx_skb = NULL;
455 /* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */
456 /* cmdB {31:16] pkt tag [10:0] length */
458 /* 16 byte buffer alignment mode */
459 buf = (char*)((u32)(skb->data) & ~0xF);
460 len = (skb->len + 0xF + ((u32)skb->data & 0xF)) & ~0xF;
461 cmdA = (1<<24) | (((u32)skb->data & 0xF)<<16) |
462 TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
465 buf = (char*)((u32)skb->data & ~0x3);
466 len = (skb->len + 3 + ((u32)skb->data & 3)) & ~0x3;
467 cmdA = (((u32)skb->data & 0x3) << 16) |
468 TX_CMD_A_INT_FIRST_SEG_ | TX_CMD_A_INT_LAST_SEG_ |
471 /* tag is packet length so we can use this in stats update later */
472 cmdB = (skb->len << 16) | (skb->len & 0x7FF);
474 DBG(SMC_DEBUG_TX, dev, "TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n",
475 len, len, buf, cmdA, cmdB);
476 SMC_SET_TX_FIFO(lp, cmdA);
477 SMC_SET_TX_FIFO(lp, cmdB);
479 DBG(SMC_DEBUG_PKTS, dev, "Transmitted packet\n");
480 PRINT_PKT(buf, len <= 64 ? len : 64);
482 /* Send pkt via PIO or DMA */
484 lp->current_tx_skb = skb;
485 SMC_PUSH_DATA(lp, buf, len);
486 /* DMA complete IRQ will free buffer and set jiffies */
488 SMC_PUSH_DATA(lp, buf, len);
489 netif_trans_update(dev);
490 dev_kfree_skb_irq(skb);
492 if (!lp->tx_throttle) {
493 netif_wake_queue(dev);
495 SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_);
499 * Since I am not sure if I will have enough room in the chip's ram
500 * to store the packet, I call this routine which either sends it
501 * now, or set the card to generates an interrupt when ready
505 smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
507 struct smc911x_local *lp = netdev_priv(dev);
511 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
514 spin_lock_irqsave(&lp->lock, flags);
516 BUG_ON(lp->pending_tx_skb != NULL);
518 free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_;
519 DBG(SMC_DEBUG_TX, dev, "TX free space %d\n", free);
521 /* Turn off the flow when running out of space in FIFO */
522 if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) {
523 DBG(SMC_DEBUG_TX, dev, "Disabling data flow due to low FIFO space (%d)\n",
525 /* Reenable when at least 1 packet of size MTU present */
526 SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64);
528 netif_stop_queue(dev);
531 /* Drop packets when we run out of space in TX FIFO
532 * Account for overhead required for:
534 * Tx command words 8 bytes
535 * Start offset 15 bytes
536 * End padding 15 bytes
538 if (unlikely(free < (skb->len + 8 + 15 + 15))) {
539 netdev_warn(dev, "No Tx free space %d < %d\n",
541 lp->pending_tx_skb = NULL;
542 dev->stats.tx_errors++;
543 dev->stats.tx_dropped++;
544 spin_unlock_irqrestore(&lp->lock, flags);
545 dev_kfree_skb_any(skb);
551 /* If the DMA is already running then defer this packet Tx until
552 * the DMA IRQ starts it
554 if (lp->txdma_active) {
555 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Tx DMA running, deferring packet\n");
556 lp->pending_tx_skb = skb;
557 netif_stop_queue(dev);
558 spin_unlock_irqrestore(&lp->lock, flags);
561 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "Activating Tx DMA\n");
562 lp->txdma_active = 1;
566 lp->pending_tx_skb = skb;
567 smc911x_hardware_send_pkt(dev);
568 spin_unlock_irqrestore(&lp->lock, flags);
574 * This handles a TX status interrupt, which is only called when:
575 * - a TX error occurred, or
576 * - TX of a packet completed.
578 static void smc911x_tx(struct net_device *dev)
580 struct smc911x_local *lp = netdev_priv(dev);
581 unsigned int tx_status;
583 DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, dev, "--> %s\n",
586 /* Collect the TX status */
587 while (((SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16) != 0) {
588 DBG(SMC_DEBUG_TX, dev, "Tx stat FIFO used 0x%04x\n",
589 (SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TSUSED_) >> 16);
590 tx_status = SMC_GET_TX_STS_FIFO(lp);
591 dev->stats.tx_packets++;
592 dev->stats.tx_bytes+=tx_status>>16;
593 DBG(SMC_DEBUG_TX, dev, "Tx FIFO tag 0x%04x status 0x%04x\n",
594 (tx_status & 0xffff0000) >> 16,
595 tx_status & 0x0000ffff);
596 /* count Tx errors, but ignore lost carrier errors when in
597 * full-duplex mode */
598 if ((tx_status & TX_STS_ES_) && !(lp->ctl_rfduplx &&
599 !(tx_status & 0x00000306))) {
600 dev->stats.tx_errors++;
602 if (tx_status & TX_STS_MANY_COLL_) {
603 dev->stats.collisions+=16;
604 dev->stats.tx_aborted_errors++;
606 dev->stats.collisions+=(tx_status & TX_STS_COLL_CNT_) >> 3;
608 /* carrier error only has meaning for half-duplex communication */
609 if ((tx_status & (TX_STS_LOC_ | TX_STS_NO_CARR_)) &&
611 dev->stats.tx_carrier_errors++;
613 if (tx_status & TX_STS_LATE_COLL_) {
614 dev->stats.collisions++;
615 dev->stats.tx_aborted_errors++;
621 /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
623 * Reads a register from the MII Management serial interface
626 static int smc911x_phy_read(struct net_device *dev, int phyaddr, int phyreg)
628 struct smc911x_local *lp = netdev_priv(dev);
629 unsigned int phydata;
631 SMC_GET_MII(lp, phyreg, phyaddr, phydata);
633 DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n",
634 __func__, phyaddr, phyreg, phydata);
640 * Writes a register to the MII Management serial interface
642 static void smc911x_phy_write(struct net_device *dev, int phyaddr, int phyreg,
645 struct smc911x_local *lp = netdev_priv(dev);
647 DBG(SMC_DEBUG_MISC, dev, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
648 __func__, phyaddr, phyreg, phydata);
650 SMC_SET_MII(lp, phyreg, phyaddr, phydata);
654 * Finds and reports the PHY address (115 and 117 have external
655 * PHY interface 118 has internal only
657 static void smc911x_phy_detect(struct net_device *dev)
659 struct smc911x_local *lp = netdev_priv(dev);
661 unsigned int cfg, id1, id2;
663 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
668 * Scan all 32 PHY addresses if necessary, starting at
669 * PHY#1 to PHY#31, and then PHY#0 last.
671 switch(lp->version) {
676 cfg = SMC_GET_HW_CFG(lp);
677 if (cfg & HW_CFG_EXT_PHY_DET_) {
678 cfg &= ~HW_CFG_PHY_CLK_SEL_;
679 cfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
680 SMC_SET_HW_CFG(lp, cfg);
681 udelay(10); /* Wait for clocks to stop */
683 cfg |= HW_CFG_EXT_PHY_EN_;
684 SMC_SET_HW_CFG(lp, cfg);
685 udelay(10); /* Wait for clocks to stop */
687 cfg &= ~HW_CFG_PHY_CLK_SEL_;
688 cfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
689 SMC_SET_HW_CFG(lp, cfg);
690 udelay(10); /* Wait for clocks to stop */
692 cfg |= HW_CFG_SMI_SEL_;
693 SMC_SET_HW_CFG(lp, cfg);
695 for (phyaddr = 1; phyaddr < 32; ++phyaddr) {
697 /* Read the PHY identifiers */
698 SMC_GET_PHY_ID1(lp, phyaddr & 31, id1);
699 SMC_GET_PHY_ID2(lp, phyaddr & 31, id2);
701 /* Make sure it is a valid identifier */
702 if (id1 != 0x0000 && id1 != 0xffff &&
703 id1 != 0x8000 && id2 != 0x0000 &&
704 id2 != 0xffff && id2 != 0x8000) {
705 /* Save the PHY's address */
706 lp->mii.phy_id = phyaddr & 31;
707 lp->phy_type = id1 << 16 | id2;
712 /* Found an external PHY */
716 /* Internal media only */
717 SMC_GET_PHY_ID1(lp, 1, id1);
718 SMC_GET_PHY_ID2(lp, 1, id2);
719 /* Save the PHY's address */
721 lp->phy_type = id1 << 16 | id2;
724 DBG(SMC_DEBUG_MISC, dev, "phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%x\n",
725 id1, id2, lp->mii.phy_id);
729 * Sets the PHY to a configuration as determined by the user.
730 * Called with spin_lock held.
732 static int smc911x_phy_fixed(struct net_device *dev)
734 struct smc911x_local *lp = netdev_priv(dev);
735 int phyaddr = lp->mii.phy_id;
738 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
740 /* Enter Link Disable state */
741 SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
743 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
746 * Set our fixed capabilities
747 * Disable auto-negotiation
749 bmcr &= ~BMCR_ANENABLE;
751 bmcr |= BMCR_FULLDPLX;
753 if (lp->ctl_rspeed == 100)
754 bmcr |= BMCR_SPEED100;
756 /* Write our capabilities to the phy control register */
757 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
759 /* Re-Configure the Receive/Phy Control register */
761 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
767 * smc911x_phy_reset - reset the phy
771 * Issue a software reset for the specified PHY and
772 * wait up to 100ms for the reset to complete. We should
773 * not access the PHY for 50ms after issuing the reset.
775 * The time to wait appears to be dependent on the PHY.
778 static int smc911x_phy_reset(struct net_device *dev, int phy)
780 struct smc911x_local *lp = netdev_priv(dev);
785 DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
787 spin_lock_irqsave(&lp->lock, flags);
788 reg = SMC_GET_PMT_CTRL(lp);
790 reg |= PMT_CTRL_PHY_RST_;
791 SMC_SET_PMT_CTRL(lp, reg);
792 spin_unlock_irqrestore(&lp->lock, flags);
793 for (timeout = 2; timeout; timeout--) {
795 spin_lock_irqsave(&lp->lock, flags);
796 reg = SMC_GET_PMT_CTRL(lp);
797 spin_unlock_irqrestore(&lp->lock, flags);
798 if (!(reg & PMT_CTRL_PHY_RST_)) {
799 /* extra delay required because the phy may
800 * not be completed with its reset
801 * when PHY_BCR_RESET_ is cleared. 256us
802 * should suffice, but use 500us to be safe
809 return reg & PMT_CTRL_PHY_RST_;
813 * smc911x_phy_powerdown - powerdown phy
817 * Power down the specified PHY
819 static void smc911x_phy_powerdown(struct net_device *dev, int phy)
821 struct smc911x_local *lp = netdev_priv(dev);
824 /* Enter Link Disable state */
825 SMC_GET_PHY_BMCR(lp, phy, bmcr);
827 SMC_SET_PHY_BMCR(lp, phy, bmcr);
831 * smc911x_phy_check_media - check the media status and adjust BMCR
833 * @init: set true for initialisation
835 * Select duplex mode depending on negotiation state. This
836 * also updates our carrier state.
838 static void smc911x_phy_check_media(struct net_device *dev, int init)
840 struct smc911x_local *lp = netdev_priv(dev);
841 int phyaddr = lp->mii.phy_id;
842 unsigned int bmcr, cr;
844 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
846 if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
847 /* duplex state has changed */
848 SMC_GET_PHY_BMCR(lp, phyaddr, bmcr);
849 SMC_GET_MAC_CR(lp, cr);
850 if (lp->mii.full_duplex) {
851 DBG(SMC_DEBUG_MISC, dev, "Configuring for full-duplex mode\n");
852 bmcr |= BMCR_FULLDPLX;
853 cr |= MAC_CR_RCVOWN_;
855 DBG(SMC_DEBUG_MISC, dev, "Configuring for half-duplex mode\n");
856 bmcr &= ~BMCR_FULLDPLX;
857 cr &= ~MAC_CR_RCVOWN_;
859 SMC_SET_PHY_BMCR(lp, phyaddr, bmcr);
860 SMC_SET_MAC_CR(lp, cr);
865 * Configures the specified PHY through the MII management interface
866 * using Autonegotiation.
867 * Calls smc911x_phy_fixed() if the user has requested a certain config.
868 * If RPC ANEG bit is set, the media selection is dependent purely on
869 * the selection by the MII (either in the MII BMCR reg or the result
870 * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
871 * is controlled by the RPC SPEED and RPC DPLX bits.
873 static void smc911x_phy_configure(struct work_struct *work)
875 struct smc911x_local *lp = container_of(work, struct smc911x_local,
877 struct net_device *dev = lp->netdev;
878 int phyaddr = lp->mii.phy_id;
879 int my_phy_caps; /* My PHY capabilities */
880 int my_ad_caps; /* My Advertised capabilities */
884 DBG(SMC_DEBUG_FUNC, dev, "--> %s()\n", __func__);
887 * We should not be called if phy_type is zero.
889 if (lp->phy_type == 0)
892 if (smc911x_phy_reset(dev, phyaddr)) {
893 netdev_info(dev, "PHY reset timed out\n");
896 spin_lock_irqsave(&lp->lock, flags);
899 * Enable PHY Interrupts (for register 18)
900 * Interrupts listed here are enabled
902 SMC_SET_PHY_INT_MASK(lp, phyaddr, PHY_INT_MASK_ENERGY_ON_ |
903 PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_REMOTE_FAULT_ |
904 PHY_INT_MASK_LINK_DOWN_);
906 /* If the user requested no auto neg, then go set his request */
907 if (lp->mii.force_media) {
908 smc911x_phy_fixed(dev);
909 goto smc911x_phy_configure_exit;
912 /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
913 SMC_GET_PHY_BMSR(lp, phyaddr, my_phy_caps);
914 if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
915 netdev_info(dev, "Auto negotiation NOT supported\n");
916 smc911x_phy_fixed(dev);
917 goto smc911x_phy_configure_exit;
920 /* CSMA capable w/ both pauses */
921 my_ad_caps = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
923 if (my_phy_caps & BMSR_100BASE4)
924 my_ad_caps |= ADVERTISE_100BASE4;
925 if (my_phy_caps & BMSR_100FULL)
926 my_ad_caps |= ADVERTISE_100FULL;
927 if (my_phy_caps & BMSR_100HALF)
928 my_ad_caps |= ADVERTISE_100HALF;
929 if (my_phy_caps & BMSR_10FULL)
930 my_ad_caps |= ADVERTISE_10FULL;
931 if (my_phy_caps & BMSR_10HALF)
932 my_ad_caps |= ADVERTISE_10HALF;
934 /* Disable capabilities not selected by our user */
935 if (lp->ctl_rspeed != 100)
936 my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
938 if (!lp->ctl_rfduplx)
939 my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
941 /* Update our Auto-Neg Advertisement Register */
942 SMC_SET_PHY_MII_ADV(lp, phyaddr, my_ad_caps);
943 lp->mii.advertising = my_ad_caps;
946 * Read the register back. Without this, it appears that when
947 * auto-negotiation is restarted, sometimes it isn't ready and
948 * the link does not come up.
951 SMC_GET_PHY_MII_ADV(lp, phyaddr, status);
953 DBG(SMC_DEBUG_MISC, dev, "phy caps=0x%04x\n", my_phy_caps);
954 DBG(SMC_DEBUG_MISC, dev, "phy advertised caps=0x%04x\n", my_ad_caps);
956 /* Restart auto-negotiation process in order to advertise my caps */
957 SMC_SET_PHY_BMCR(lp, phyaddr, BMCR_ANENABLE | BMCR_ANRESTART);
959 smc911x_phy_check_media(dev, 1);
961 smc911x_phy_configure_exit:
962 spin_unlock_irqrestore(&lp->lock, flags);
966 * smc911x_phy_interrupt
968 * Purpose: Handle interrupts relating to PHY register 18. This is
969 * called from the "hard" interrupt handler under our private spinlock.
971 static void smc911x_phy_interrupt(struct net_device *dev)
973 struct smc911x_local *lp = netdev_priv(dev);
974 int phyaddr = lp->mii.phy_id;
977 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
979 if (lp->phy_type == 0)
982 smc911x_phy_check_media(dev, 0);
983 /* read to clear status bits */
984 SMC_GET_PHY_INT_SRC(lp, phyaddr,status);
985 DBG(SMC_DEBUG_MISC, dev, "PHY interrupt status 0x%04x\n",
987 DBG(SMC_DEBUG_MISC, dev, "AFC_CFG 0x%08x\n",
988 SMC_GET_AFC_CFG(lp));
991 /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
994 * This is the main routine of the driver, to handle the device when
995 * it needs some attention.
997 static irqreturn_t smc911x_interrupt(int irq, void *dev_id)
999 struct net_device *dev = dev_id;
1000 struct smc911x_local *lp = netdev_priv(dev);
1001 unsigned int status, mask, timeout;
1002 unsigned int rx_overrun=0, cr, pkts;
1003 unsigned long flags;
1005 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1007 spin_lock_irqsave(&lp->lock, flags);
1009 /* Spurious interrupt check */
1010 if ((SMC_GET_IRQ_CFG(lp) & (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) !=
1011 (INT_CFG_IRQ_INT_ | INT_CFG_IRQ_EN_)) {
1012 spin_unlock_irqrestore(&lp->lock, flags);
1016 mask = SMC_GET_INT_EN(lp);
1017 SMC_SET_INT_EN(lp, 0);
1019 /* set a timeout value, so I don't stay here forever */
1024 status = SMC_GET_INT(lp);
1026 DBG(SMC_DEBUG_MISC, dev, "INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n",
1027 status, mask, status & ~mask);
1033 /* Handle SW interrupt condition */
1034 if (status & INT_STS_SW_INT_) {
1035 SMC_ACK_INT(lp, INT_STS_SW_INT_);
1036 mask &= ~INT_EN_SW_INT_EN_;
1038 /* Handle various error conditions */
1039 if (status & INT_STS_RXE_) {
1040 SMC_ACK_INT(lp, INT_STS_RXE_);
1041 dev->stats.rx_errors++;
1043 if (status & INT_STS_RXDFH_INT_) {
1044 SMC_ACK_INT(lp, INT_STS_RXDFH_INT_);
1045 dev->stats.rx_dropped+=SMC_GET_RX_DROP(lp);
1047 /* Undocumented interrupt-what is the right thing to do here? */
1048 if (status & INT_STS_RXDF_INT_) {
1049 SMC_ACK_INT(lp, INT_STS_RXDF_INT_);
1052 /* Rx Data FIFO exceeds set level */
1053 if (status & INT_STS_RDFL_) {
1054 if (IS_REV_A(lp->revision)) {
1056 SMC_GET_MAC_CR(lp, cr);
1057 cr &= ~MAC_CR_RXEN_;
1058 SMC_SET_MAC_CR(lp, cr);
1059 DBG(SMC_DEBUG_RX, dev, "RX overrun\n");
1060 dev->stats.rx_errors++;
1061 dev->stats.rx_fifo_errors++;
1063 SMC_ACK_INT(lp, INT_STS_RDFL_);
1065 if (status & INT_STS_RDFO_) {
1066 if (!IS_REV_A(lp->revision)) {
1067 SMC_GET_MAC_CR(lp, cr);
1068 cr &= ~MAC_CR_RXEN_;
1069 SMC_SET_MAC_CR(lp, cr);
1071 DBG(SMC_DEBUG_RX, dev, "RX overrun\n");
1072 dev->stats.rx_errors++;
1073 dev->stats.rx_fifo_errors++;
1075 SMC_ACK_INT(lp, INT_STS_RDFO_);
1077 /* Handle receive condition */
1078 if ((status & INT_STS_RSFL_) || rx_overrun) {
1080 DBG(SMC_DEBUG_RX, dev, "RX irq\n");
1081 fifo = SMC_GET_RX_FIFO_INF(lp);
1082 pkts = (fifo & RX_FIFO_INF_RXSUSED_) >> 16;
1083 DBG(SMC_DEBUG_RX, dev, "Rx FIFO pkts %d, bytes %d\n",
1084 pkts, fifo & 0xFFFF);
1088 if (lp->rxdma_active){
1089 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev,
1091 /* The DMA is already running so up the IRQ threshold */
1092 fifo = SMC_GET_FIFO_INT(lp) & ~0xFF;
1093 fifo |= pkts & 0xFF;
1094 DBG(SMC_DEBUG_RX, dev,
1095 "Setting RX stat FIFO threshold to %d\n",
1097 SMC_SET_FIFO_INT(lp, fifo);
1102 SMC_ACK_INT(lp, INT_STS_RSFL_);
1104 /* Handle transmit FIFO available */
1105 if (status & INT_STS_TDFA_) {
1106 DBG(SMC_DEBUG_TX, dev, "TX data FIFO space available irq\n");
1107 SMC_SET_FIFO_TDA(lp, 0xFF);
1108 lp->tx_throttle = 0;
1110 if (!lp->txdma_active)
1112 netif_wake_queue(dev);
1113 SMC_ACK_INT(lp, INT_STS_TDFA_);
1115 /* Handle transmit done condition */
1117 if (status & (INT_STS_TSFL_ | INT_STS_GPT_INT_)) {
1118 DBG(SMC_DEBUG_TX | SMC_DEBUG_MISC, dev,
1119 "Tx stat FIFO limit (%d) /GPT irq\n",
1120 (SMC_GET_FIFO_INT(lp) & 0x00ff0000) >> 16);
1122 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
1123 SMC_ACK_INT(lp, INT_STS_TSFL_);
1124 SMC_ACK_INT(lp, INT_STS_TSFL_ | INT_STS_GPT_INT_);
1127 if (status & INT_STS_TSFL_) {
1128 DBG(SMC_DEBUG_TX, dev, "TX status FIFO limit (%d) irq\n", ?);
1130 SMC_ACK_INT(lp, INT_STS_TSFL_);
1133 if (status & INT_STS_GPT_INT_) {
1134 DBG(SMC_DEBUG_RX, dev, "IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n",
1135 SMC_GET_IRQ_CFG(lp),
1136 SMC_GET_FIFO_INT(lp),
1137 SMC_GET_RX_CFG(lp));
1138 DBG(SMC_DEBUG_RX, dev, "Rx Stat FIFO Used 0x%02x Data FIFO Used 0x%04x Stat FIFO 0x%08x\n",
1139 (SMC_GET_RX_FIFO_INF(lp) & 0x00ff0000) >> 16,
1140 SMC_GET_RX_FIFO_INF(lp) & 0xffff,
1141 SMC_GET_RX_STS_FIFO_PEEK(lp));
1142 SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
1143 SMC_ACK_INT(lp, INT_STS_GPT_INT_);
1147 /* Handle PHY interrupt condition */
1148 if (status & INT_STS_PHY_INT_) {
1149 DBG(SMC_DEBUG_MISC, dev, "PHY irq\n");
1150 smc911x_phy_interrupt(dev);
1151 SMC_ACK_INT(lp, INT_STS_PHY_INT_);
1153 } while (--timeout);
1155 /* restore mask state */
1156 SMC_SET_INT_EN(lp, mask);
1158 DBG(SMC_DEBUG_MISC, dev, "Interrupt done (%d loops)\n",
1161 spin_unlock_irqrestore(&lp->lock, flags);
1168 smc911x_tx_dma_irq(void *data)
1170 struct smc911x_local *lp = data;
1171 struct net_device *dev = lp->netdev;
1172 struct sk_buff *skb = lp->current_tx_skb;
1173 unsigned long flags;
1175 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1177 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev, "TX DMA irq handler\n");
1178 BUG_ON(skb == NULL);
1179 dma_unmap_single(lp->dev, tx_dmabuf, tx_dmalen, DMA_TO_DEVICE);
1180 netif_trans_update(dev);
1181 dev_kfree_skb_irq(skb);
1182 lp->current_tx_skb = NULL;
1183 if (lp->pending_tx_skb != NULL)
1184 smc911x_hardware_send_pkt(dev);
1186 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev,
1187 "No pending Tx packets. DMA disabled\n");
1188 spin_lock_irqsave(&lp->lock, flags);
1189 lp->txdma_active = 0;
1190 if (!lp->tx_throttle) {
1191 netif_wake_queue(dev);
1193 spin_unlock_irqrestore(&lp->lock, flags);
1196 DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, dev,
1197 "TX DMA irq completed\n");
1200 smc911x_rx_dma_irq(void *data)
1202 struct smc911x_local *lp = data;
1203 struct net_device *dev = lp->netdev;
1204 struct sk_buff *skb = lp->current_rx_skb;
1205 unsigned long flags;
1208 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1209 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev, "RX DMA irq handler\n");
1210 dma_unmap_single(lp->dev, rx_dmabuf, rx_dmalen, DMA_FROM_DEVICE);
1211 BUG_ON(skb == NULL);
1212 lp->current_rx_skb = NULL;
1213 PRINT_PKT(skb->data, skb->len);
1214 skb->protocol = eth_type_trans(skb, dev);
1215 dev->stats.rx_packets++;
1216 dev->stats.rx_bytes += skb->len;
1219 spin_lock_irqsave(&lp->lock, flags);
1220 pkts = (SMC_GET_RX_FIFO_INF(lp) & RX_FIFO_INF_RXSUSED_) >> 16;
1224 lp->rxdma_active = 0;
1226 spin_unlock_irqrestore(&lp->lock, flags);
1227 DBG(SMC_DEBUG_RX | SMC_DEBUG_DMA, dev,
1228 "RX DMA irq completed. DMA RX FIFO PKTS %d\n",
1231 #endif /* SMC_USE_DMA */
1233 #ifdef CONFIG_NET_POLL_CONTROLLER
1235 * Polling receive - used by netconsole and other diagnostic tools
1236 * to allow network i/o with interrupts disabled.
1238 static void smc911x_poll_controller(struct net_device *dev)
1240 disable_irq(dev->irq);
1241 smc911x_interrupt(dev->irq, dev);
1242 enable_irq(dev->irq);
1246 /* Our watchdog timed out. Called by the networking layer */
1247 static void smc911x_timeout(struct net_device *dev)
1249 struct smc911x_local *lp = netdev_priv(dev);
1251 unsigned long flags;
1253 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1255 spin_lock_irqsave(&lp->lock, flags);
1256 status = SMC_GET_INT(lp);
1257 mask = SMC_GET_INT_EN(lp);
1258 spin_unlock_irqrestore(&lp->lock, flags);
1259 DBG(SMC_DEBUG_MISC, dev, "INT 0x%02x MASK 0x%02x\n",
1262 /* Dump the current TX FIFO contents and restart */
1263 mask = SMC_GET_TX_CFG(lp);
1264 SMC_SET_TX_CFG(lp, mask | TX_CFG_TXS_DUMP_ | TX_CFG_TXD_DUMP_);
1266 * Reconfiguring the PHY doesn't seem like a bad idea here, but
1267 * smc911x_phy_configure() calls msleep() which calls schedule_timeout()
1268 * which calls schedule(). Hence we use a work queue.
1270 if (lp->phy_type != 0)
1271 schedule_work(&lp->phy_configure);
1273 /* We can accept TX packets again */
1274 netif_trans_update(dev); /* prevent tx timeout */
1275 netif_wake_queue(dev);
1279 * This routine will, depending on the values passed to it,
1280 * either make it accept multicast packets, go into
1281 * promiscuous mode (for TCPDUMP and cousins) or accept
1282 * a select set of multicast packets
1284 static void smc911x_set_multicast_list(struct net_device *dev)
1286 struct smc911x_local *lp = netdev_priv(dev);
1287 unsigned int multicast_table[2];
1288 unsigned int mcr, update_multicast = 0;
1289 unsigned long flags;
1291 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1293 spin_lock_irqsave(&lp->lock, flags);
1294 SMC_GET_MAC_CR(lp, mcr);
1295 spin_unlock_irqrestore(&lp->lock, flags);
1297 if (dev->flags & IFF_PROMISC) {
1299 DBG(SMC_DEBUG_MISC, dev, "RCR_PRMS\n");
1300 mcr |= MAC_CR_PRMS_;
1303 * Here, I am setting this to accept all multicast packets.
1304 * I don't need to zero the multicast table, because the flag is
1305 * checked before the table is
1307 else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) {
1308 DBG(SMC_DEBUG_MISC, dev, "RCR_ALMUL\n");
1309 mcr |= MAC_CR_MCPAS_;
1313 * This sets the internal hardware table to filter out unwanted
1314 * multicast packets before they take up memory.
1316 * The SMC chip uses a hash table where the high 6 bits of the CRC of
1317 * address are the offset into the table. If that bit is 1, then the
1318 * multicast packet is accepted. Otherwise, it's dropped silently.
1320 * To use the 6 bits as an offset into the table, the high 1 bit is
1321 * the number of the 32 bit register, while the low 5 bits are the bit
1322 * within that register.
1324 else if (!netdev_mc_empty(dev)) {
1325 struct netdev_hw_addr *ha;
1327 /* Set the Hash perfec mode */
1328 mcr |= MAC_CR_HPFILT_;
1330 /* start with a table of all zeros: reject all */
1331 memset(multicast_table, 0, sizeof(multicast_table));
1333 netdev_for_each_mc_addr(ha, dev) {
1336 /* upper 6 bits are used as hash index */
1337 position = ether_crc(ETH_ALEN, ha->addr)>>26;
1339 multicast_table[position>>5] |= 1 << (position&0x1f);
1342 /* be sure I get rid of flags I might have set */
1343 mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
1345 /* now, the table can be loaded into the chipset */
1346 update_multicast = 1;
1348 DBG(SMC_DEBUG_MISC, dev, "~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n");
1349 mcr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
1352 * since I'm disabling all multicast entirely, I need to
1353 * clear the multicast list
1355 memset(multicast_table, 0, sizeof(multicast_table));
1356 update_multicast = 1;
1359 spin_lock_irqsave(&lp->lock, flags);
1360 SMC_SET_MAC_CR(lp, mcr);
1361 if (update_multicast) {
1362 DBG(SMC_DEBUG_MISC, dev,
1363 "update mcast hash table 0x%08x 0x%08x\n",
1364 multicast_table[0], multicast_table[1]);
1365 SMC_SET_HASHL(lp, multicast_table[0]);
1366 SMC_SET_HASHH(lp, multicast_table[1]);
1368 spin_unlock_irqrestore(&lp->lock, flags);
1373 * Open and Initialize the board
1375 * Set up everything, reset the card, etc..
1378 smc911x_open(struct net_device *dev)
1380 struct smc911x_local *lp = netdev_priv(dev);
1382 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1384 /* reset the hardware */
1387 /* Configure the PHY, initialize the link state */
1388 smc911x_phy_configure(&lp->phy_configure);
1390 /* Turn on Tx + Rx */
1391 smc911x_enable(dev);
1393 netif_start_queue(dev);
1401 * this makes the board clean up everything that it can
1402 * and not talk to the outside world. Caused by
1403 * an 'ifconfig ethX down'
1405 static int smc911x_close(struct net_device *dev)
1407 struct smc911x_local *lp = netdev_priv(dev);
1409 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1411 netif_stop_queue(dev);
1412 netif_carrier_off(dev);
1414 /* clear everything */
1415 smc911x_shutdown(dev);
1417 if (lp->phy_type != 0) {
1418 /* We need to ensure that no calls to
1419 * smc911x_phy_configure are pending.
1421 cancel_work_sync(&lp->phy_configure);
1422 smc911x_phy_powerdown(dev, lp->mii.phy_id);
1425 if (lp->pending_tx_skb) {
1426 dev_kfree_skb(lp->pending_tx_skb);
1427 lp->pending_tx_skb = NULL;
1437 smc911x_ethtool_get_link_ksettings(struct net_device *dev,
1438 struct ethtool_link_ksettings *cmd)
1440 struct smc911x_local *lp = netdev_priv(dev);
1442 unsigned long flags;
1445 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1447 if (lp->phy_type != 0) {
1448 spin_lock_irqsave(&lp->lock, flags);
1449 mii_ethtool_get_link_ksettings(&lp->mii, cmd);
1450 spin_unlock_irqrestore(&lp->lock, flags);
1452 supported = SUPPORTED_10baseT_Half |
1453 SUPPORTED_10baseT_Full |
1454 SUPPORTED_TP | SUPPORTED_AUI;
1456 if (lp->ctl_rspeed == 10)
1457 cmd->base.speed = SPEED_10;
1458 else if (lp->ctl_rspeed == 100)
1459 cmd->base.speed = SPEED_100;
1461 cmd->base.autoneg = AUTONEG_DISABLE;
1463 SMC_GET_PHY_SPECIAL(lp, lp->mii.phy_id, status);
1465 (status & (PHY_SPECIAL_SPD_10FULL_ | PHY_SPECIAL_SPD_100FULL_)) ?
1466 DUPLEX_FULL : DUPLEX_HALF;
1468 ethtool_convert_legacy_u32_to_link_mode(
1469 cmd->link_modes.supported, supported);
1477 smc911x_ethtool_set_link_ksettings(struct net_device *dev,
1478 const struct ethtool_link_ksettings *cmd)
1480 struct smc911x_local *lp = netdev_priv(dev);
1482 unsigned long flags;
1484 if (lp->phy_type != 0) {
1485 spin_lock_irqsave(&lp->lock, flags);
1486 ret = mii_ethtool_set_link_ksettings(&lp->mii, cmd);
1487 spin_unlock_irqrestore(&lp->lock, flags);
1489 if (cmd->base.autoneg != AUTONEG_DISABLE ||
1490 cmd->base.speed != SPEED_10 ||
1491 (cmd->base.duplex != DUPLEX_HALF &&
1492 cmd->base.duplex != DUPLEX_FULL) ||
1493 (cmd->base.port != PORT_TP &&
1494 cmd->base.port != PORT_AUI))
1497 lp->ctl_rfduplx = cmd->base.duplex == DUPLEX_FULL;
1506 smc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1508 strlcpy(info->driver, CARDNAME, sizeof(info->driver));
1509 strlcpy(info->version, version, sizeof(info->version));
1510 strlcpy(info->bus_info, dev_name(dev->dev.parent),
1511 sizeof(info->bus_info));
1514 static int smc911x_ethtool_nwayreset(struct net_device *dev)
1516 struct smc911x_local *lp = netdev_priv(dev);
1518 unsigned long flags;
1520 if (lp->phy_type != 0) {
1521 spin_lock_irqsave(&lp->lock, flags);
1522 ret = mii_nway_restart(&lp->mii);
1523 spin_unlock_irqrestore(&lp->lock, flags);
1529 static u32 smc911x_ethtool_getmsglevel(struct net_device *dev)
1531 struct smc911x_local *lp = netdev_priv(dev);
1532 return lp->msg_enable;
1535 static void smc911x_ethtool_setmsglevel(struct net_device *dev, u32 level)
1537 struct smc911x_local *lp = netdev_priv(dev);
1538 lp->msg_enable = level;
1541 static int smc911x_ethtool_getregslen(struct net_device *dev)
1543 /* System regs + MAC regs + PHY regs */
1544 return (((E2P_CMD - ID_REV)/4 + 1) +
1545 (WUCSR - MAC_CR)+1 + 32) * sizeof(u32);
1548 static void smc911x_ethtool_getregs(struct net_device *dev,
1549 struct ethtool_regs* regs, void *buf)
1551 struct smc911x_local *lp = netdev_priv(dev);
1552 unsigned long flags;
1554 u32 *data = (u32*)buf;
1556 regs->version = lp->version;
1557 for(i=ID_REV;i<=E2P_CMD;i+=4) {
1558 data[j++] = SMC_inl(lp, i);
1560 for(i=MAC_CR;i<=WUCSR;i++) {
1561 spin_lock_irqsave(&lp->lock, flags);
1562 SMC_GET_MAC_CSR(lp, i, reg);
1563 spin_unlock_irqrestore(&lp->lock, flags);
1566 for(i=0;i<=31;i++) {
1567 spin_lock_irqsave(&lp->lock, flags);
1568 SMC_GET_MII(lp, i, lp->mii.phy_id, reg);
1569 spin_unlock_irqrestore(&lp->lock, flags);
1570 data[j++] = reg & 0xFFFF;
1574 static int smc911x_ethtool_wait_eeprom_ready(struct net_device *dev)
1576 struct smc911x_local *lp = netdev_priv(dev);
1577 unsigned int timeout;
1580 e2p_cmd = SMC_GET_E2P_CMD(lp);
1581 for(timeout=10;(e2p_cmd & E2P_CMD_EPC_BUSY_) && timeout; timeout--) {
1582 if (e2p_cmd & E2P_CMD_EPC_TIMEOUT_) {
1583 PRINTK(dev, "%s timeout waiting for EEPROM to respond\n",
1588 e2p_cmd = SMC_GET_E2P_CMD(lp);
1591 PRINTK(dev, "%s timeout waiting for EEPROM CMD not busy\n",
1598 static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device *dev,
1601 struct smc911x_local *lp = netdev_priv(dev);
1604 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
1606 SMC_SET_E2P_CMD(lp, E2P_CMD_EPC_BUSY_ |
1607 ((cmd) & (0x7<<28)) |
1612 static inline int smc911x_ethtool_read_eeprom_byte(struct net_device *dev,
1615 struct smc911x_local *lp = netdev_priv(dev);
1618 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
1620 *data = SMC_GET_E2P_DATA(lp);
1624 static inline int smc911x_ethtool_write_eeprom_byte(struct net_device *dev,
1627 struct smc911x_local *lp = netdev_priv(dev);
1630 if ((ret = smc911x_ethtool_wait_eeprom_ready(dev))!=0)
1632 SMC_SET_E2P_DATA(lp, data);
1636 static int smc911x_ethtool_geteeprom(struct net_device *dev,
1637 struct ethtool_eeprom *eeprom, u8 *data)
1639 u8 eebuf[SMC911X_EEPROM_LEN];
1642 for(i=0;i<SMC911X_EEPROM_LEN;i++) {
1643 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_READ_, i ))!=0)
1645 if ((ret=smc911x_ethtool_read_eeprom_byte(dev, &eebuf[i]))!=0)
1648 memcpy(data, eebuf+eeprom->offset, eeprom->len);
1652 static int smc911x_ethtool_seteeprom(struct net_device *dev,
1653 struct ethtool_eeprom *eeprom, u8 *data)
1658 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_EWEN_, 0 ))!=0)
1660 for(i=eeprom->offset;i<(eeprom->offset+eeprom->len);i++) {
1662 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_ERASE_, i ))!=0)
1665 if ((ret=smc911x_ethtool_write_eeprom_byte(dev, *data))!=0)
1667 if ((ret=smc911x_ethtool_write_eeprom_cmd(dev, E2P_CMD_EPC_CMD_WRITE_, i ))!=0)
1673 static int smc911x_ethtool_geteeprom_len(struct net_device *dev)
1675 return SMC911X_EEPROM_LEN;
1678 static const struct ethtool_ops smc911x_ethtool_ops = {
1679 .get_drvinfo = smc911x_ethtool_getdrvinfo,
1680 .get_msglevel = smc911x_ethtool_getmsglevel,
1681 .set_msglevel = smc911x_ethtool_setmsglevel,
1682 .nway_reset = smc911x_ethtool_nwayreset,
1683 .get_link = ethtool_op_get_link,
1684 .get_regs_len = smc911x_ethtool_getregslen,
1685 .get_regs = smc911x_ethtool_getregs,
1686 .get_eeprom_len = smc911x_ethtool_geteeprom_len,
1687 .get_eeprom = smc911x_ethtool_geteeprom,
1688 .set_eeprom = smc911x_ethtool_seteeprom,
1689 .get_link_ksettings = smc911x_ethtool_get_link_ksettings,
1690 .set_link_ksettings = smc911x_ethtool_set_link_ksettings,
1696 * This routine has a simple purpose -- make the SMC chip generate an
1697 * interrupt, so an auto-detect routine can detect it, and find the IRQ,
1699 static int smc911x_findirq(struct net_device *dev)
1701 struct smc911x_local *lp = netdev_priv(dev);
1703 unsigned long cookie;
1705 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1707 cookie = probe_irq_on();
1710 * Force a SW interrupt
1713 SMC_SET_INT_EN(lp, INT_EN_SW_INT_EN_);
1716 * Wait until positive that the interrupt has been generated
1721 int_status = SMC_GET_INT_EN(lp);
1722 if (int_status & INT_EN_SW_INT_EN_)
1723 break; /* got the interrupt */
1724 } while (--timeout);
1727 * there is really nothing that I can do here if timeout fails,
1728 * as autoirq_report will return a 0 anyway, which is what I
1729 * want in this case. Plus, the clean up is needed in both
1733 /* and disable all interrupts again */
1734 SMC_SET_INT_EN(lp, 0);
1736 /* and return what I found */
1737 return probe_irq_off(cookie);
1740 static const struct net_device_ops smc911x_netdev_ops = {
1741 .ndo_open = smc911x_open,
1742 .ndo_stop = smc911x_close,
1743 .ndo_start_xmit = smc911x_hard_start_xmit,
1744 .ndo_tx_timeout = smc911x_timeout,
1745 .ndo_set_rx_mode = smc911x_set_multicast_list,
1746 .ndo_validate_addr = eth_validate_addr,
1747 .ndo_set_mac_address = eth_mac_addr,
1748 #ifdef CONFIG_NET_POLL_CONTROLLER
1749 .ndo_poll_controller = smc911x_poll_controller,
1754 * Function: smc911x_probe(unsigned long ioaddr)
1757 * Tests to see if a given ioaddr points to an SMC911x chip.
1758 * Returns a 0 on success
1761 * (1) see if the endian word is OK
1762 * (1) see if I recognize the chip ID in the appropriate register
1764 * Here I do typical initialization tasks.
1766 * o Initialize the structure if needed
1767 * o print out my vanity message if not done so already
1768 * o print out what type of hardware is detected
1769 * o print out the ethernet address
1771 * o set up my private data
1772 * o configure the dev structure with my subroutines
1773 * o actually GRAB the irq.
1776 static int smc911x_probe(struct net_device *dev)
1778 struct smc911x_local *lp = netdev_priv(dev);
1780 unsigned int val, chip_id, revision;
1781 const char *version_string;
1782 unsigned long irq_flags;
1784 struct dma_slave_config config;
1785 dma_cap_mask_t mask;
1788 DBG(SMC_DEBUG_FUNC, dev, "--> %s\n", __func__);
1790 /* First, see if the endian word is recognized */
1791 val = SMC_GET_BYTE_TEST(lp);
1792 DBG(SMC_DEBUG_MISC, dev, "%s: endian probe returned 0x%04x\n",
1794 if (val != 0x87654321) {
1795 netdev_err(dev, "Invalid chip endian 0x%08x\n", val);
1801 * check if the revision register is something that I
1802 * recognize. These might need to be added to later,
1803 * as future revisions could be added.
1805 chip_id = SMC_GET_PN(lp);
1806 DBG(SMC_DEBUG_MISC, dev, "%s: id probe returned 0x%04x\n",
1808 for(i=0;chip_ids[i].id != 0; i++) {
1809 if (chip_ids[i].id == chip_id) break;
1811 if (!chip_ids[i].id) {
1812 netdev_err(dev, "Unknown chip ID %04x\n", chip_id);
1816 version_string = chip_ids[i].name;
1818 revision = SMC_GET_REV(lp);
1819 DBG(SMC_DEBUG_MISC, dev, "%s: revision = 0x%04x\n", CARDNAME, revision);
1821 /* At this point I'll assume that the chip is an SMC911x. */
1822 DBG(SMC_DEBUG_MISC, dev, "%s: Found a %s\n",
1823 CARDNAME, chip_ids[i].name);
1825 /* Validate the TX FIFO size requested */
1826 if ((tx_fifo_kb < 2) || (tx_fifo_kb > 14)) {
1827 netdev_err(dev, "Invalid TX FIFO size requested %d\n",
1833 /* fill in some of the fields */
1834 lp->version = chip_ids[i].id;
1835 lp->revision = revision;
1836 lp->tx_fifo_kb = tx_fifo_kb;
1837 /* Reverse calculate the RX FIFO size from the TX */
1838 lp->tx_fifo_size=(lp->tx_fifo_kb<<10) - 512;
1839 lp->rx_fifo_size= ((0x4000 - 512 - lp->tx_fifo_size) / 16) * 15;
1841 /* Set the automatic flow control values */
1842 switch(lp->tx_fifo_kb) {
1844 * AFC_HI is about ((Rx Data Fifo Size)*2/3)/64
1845 * AFC_LO is AFC_HI/2
1846 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1848 case 2:/* 13440 Rx Data Fifo Size */
1849 lp->afc_cfg=0x008C46AF;break;
1850 case 3:/* 12480 Rx Data Fifo Size */
1851 lp->afc_cfg=0x0082419F;break;
1852 case 4:/* 11520 Rx Data Fifo Size */
1853 lp->afc_cfg=0x00783C9F;break;
1854 case 5:/* 10560 Rx Data Fifo Size */
1855 lp->afc_cfg=0x006E374F;break;
1856 case 6:/* 9600 Rx Data Fifo Size */
1857 lp->afc_cfg=0x0064328F;break;
1858 case 7:/* 8640 Rx Data Fifo Size */
1859 lp->afc_cfg=0x005A2D7F;break;
1860 case 8:/* 7680 Rx Data Fifo Size */
1861 lp->afc_cfg=0x0050287F;break;
1862 case 9:/* 6720 Rx Data Fifo Size */
1863 lp->afc_cfg=0x0046236F;break;
1864 case 10:/* 5760 Rx Data Fifo Size */
1865 lp->afc_cfg=0x003C1E6F;break;
1866 case 11:/* 4800 Rx Data Fifo Size */
1867 lp->afc_cfg=0x0032195F;break;
1869 * AFC_HI is ~1520 bytes less than RX Data Fifo Size
1870 * AFC_LO is AFC_HI/2
1871 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1873 case 12:/* 3840 Rx Data Fifo Size */
1874 lp->afc_cfg=0x0024124F;break;
1875 case 13:/* 2880 Rx Data Fifo Size */
1876 lp->afc_cfg=0x0015073F;break;
1877 case 14:/* 1920 Rx Data Fifo Size */
1878 lp->afc_cfg=0x0006032F;break;
1880 PRINTK(dev, "ERROR -- no AFC_CFG setting found");
1884 DBG(SMC_DEBUG_MISC | SMC_DEBUG_TX | SMC_DEBUG_RX, dev,
1885 "%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME,
1886 lp->tx_fifo_size, lp->rx_fifo_size, lp->afc_cfg);
1888 spin_lock_init(&lp->lock);
1890 /* Get the MAC address */
1891 SMC_GET_MAC_ADDR(lp, dev->dev_addr);
1893 /* now, reset the chip, and put it into a known state */
1897 * If dev->irq is 0, then the device has to be banged on to see
1900 * Specifying an IRQ is done with the assumption that the user knows
1901 * what (s)he is doing. No checking is done!!!!
1908 dev->irq = smc911x_findirq(dev);
1911 /* kick the card and try again */
1915 if (dev->irq == 0) {
1916 netdev_warn(dev, "Couldn't autodetect your IRQ. Use irq=xx.\n");
1920 dev->irq = irq_canonicalize(dev->irq);
1922 dev->netdev_ops = &smc911x_netdev_ops;
1923 dev->watchdog_timeo = msecs_to_jiffies(watchdog);
1924 dev->ethtool_ops = &smc911x_ethtool_ops;
1926 INIT_WORK(&lp->phy_configure, smc911x_phy_configure);
1927 lp->mii.phy_id_mask = 0x1f;
1928 lp->mii.reg_num_mask = 0x1f;
1929 lp->mii.force_media = 0;
1930 lp->mii.full_duplex = 0;
1932 lp->mii.mdio_read = smc911x_phy_read;
1933 lp->mii.mdio_write = smc911x_phy_write;
1936 * Locate the phy, if any.
1938 smc911x_phy_detect(dev);
1940 /* Set default parameters */
1941 lp->msg_enable = NETIF_MSG_LINK;
1942 lp->ctl_rfduplx = 1;
1943 lp->ctl_rspeed = 100;
1945 #ifdef SMC_DYNAMIC_BUS_CONFIG
1946 irq_flags = lp->cfg.irq_flags;
1948 irq_flags = IRQF_SHARED | SMC_IRQ_SENSE;
1952 retval = request_irq(dev->irq, smc911x_interrupt,
1953 irq_flags, dev->name, dev);
1960 dma_cap_set(DMA_SLAVE, mask);
1961 lp->rxdma = dma_request_channel(mask, NULL, NULL);
1962 lp->txdma = dma_request_channel(mask, NULL, NULL);
1963 lp->rxdma_active = 0;
1964 lp->txdma_active = 0;
1966 memset(&config, 0, sizeof(config));
1967 config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
1968 config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
1969 config.src_addr = lp->physaddr + RX_DATA_FIFO;
1970 config.dst_addr = lp->physaddr + TX_DATA_FIFO;
1971 config.src_maxburst = 32;
1972 config.dst_maxburst = 32;
1973 retval = dmaengine_slave_config(lp->rxdma, &config);
1975 dev_err(lp->dev, "dma rx channel configuration failed: %d\n",
1979 retval = dmaengine_slave_config(lp->txdma, &config);
1981 dev_err(lp->dev, "dma tx channel configuration failed: %d\n",
1987 retval = register_netdev(dev);
1989 /* now, print out the card info, in a short format.. */
1990 netdev_info(dev, "%s (rev %d) at %#lx IRQ %d",
1991 version_string, lp->revision,
1992 dev->base_addr, dev->irq);
1996 pr_cont(" RXDMA %p", lp->rxdma);
1999 pr_cont(" TXDMA %p", lp->txdma);
2002 if (!is_valid_ether_addr(dev->dev_addr)) {
2003 netdev_warn(dev, "Invalid ethernet MAC address. Please set using ifconfig\n");
2005 /* Print the Ethernet address */
2006 netdev_info(dev, "Ethernet addr: %pM\n",
2010 if (lp->phy_type == 0) {
2011 PRINTK(dev, "No PHY found\n");
2012 } else if ((lp->phy_type & ~0xff) == LAN911X_INTERNAL_PHY_ID) {
2013 PRINTK(dev, "LAN911x Internal PHY\n");
2015 PRINTK(dev, "External PHY 0x%08x\n", lp->phy_type);
2023 dma_release_channel(lp->rxdma);
2025 dma_release_channel(lp->txdma);
2032 * smc911x_drv_probe(void)
2035 * 0 --> there is a device
2036 * anything else, error
2038 static int smc911x_drv_probe(struct platform_device *pdev)
2040 struct net_device *ndev;
2041 struct resource *res;
2042 struct smc911x_local *lp;
2046 /* ndev is not valid yet, so avoid passing it in. */
2047 DBG(SMC_DEBUG_FUNC, "--> %s\n", __func__);
2048 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2055 * Request the regions.
2057 if (!request_mem_region(res->start, SMC911X_IO_EXTENT, CARDNAME)) {
2062 ndev = alloc_etherdev(sizeof(struct smc911x_local));
2067 SET_NETDEV_DEV(ndev, &pdev->dev);
2069 ndev->dma = (unsigned char)-1;
2070 ndev->irq = platform_get_irq(pdev, 0);
2071 lp = netdev_priv(ndev);
2073 #ifdef SMC_DYNAMIC_BUS_CONFIG
2075 struct smc911x_platdata *pd = dev_get_platdata(&pdev->dev);
2080 memcpy(&lp->cfg, pd, sizeof(lp->cfg));
2084 addr = ioremap(res->start, SMC911X_IO_EXTENT);
2090 platform_set_drvdata(pdev, ndev);
2092 ndev->base_addr = res->start;
2093 ret = smc911x_probe(ndev);
2099 release_mem_region(res->start, SMC911X_IO_EXTENT);
2101 pr_info("%s: not found (%d).\n", CARDNAME, ret);
2105 lp->physaddr = res->start;
2106 lp->dev = &pdev->dev;
2113 static int smc911x_drv_remove(struct platform_device *pdev)
2115 struct net_device *ndev = platform_get_drvdata(pdev);
2116 struct smc911x_local *lp = netdev_priv(ndev);
2117 struct resource *res;
2119 DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
2121 unregister_netdev(ndev);
2123 free_irq(ndev->irq, ndev);
2128 dma_release_channel(lp->rxdma);
2130 dma_release_channel(lp->txdma);
2134 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2135 release_mem_region(res->start, SMC911X_IO_EXTENT);
2141 static int smc911x_drv_suspend(struct platform_device *dev, pm_message_t state)
2143 struct net_device *ndev = platform_get_drvdata(dev);
2144 struct smc911x_local *lp = netdev_priv(ndev);
2146 DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
2148 if (netif_running(ndev)) {
2149 netif_device_detach(ndev);
2150 smc911x_shutdown(ndev);
2152 /* Set D2 - Energy detect only setting */
2153 SMC_SET_PMT_CTRL(lp, 2<<12);
2160 static int smc911x_drv_resume(struct platform_device *dev)
2162 struct net_device *ndev = platform_get_drvdata(dev);
2164 DBG(SMC_DEBUG_FUNC, ndev, "--> %s\n", __func__);
2166 struct smc911x_local *lp = netdev_priv(ndev);
2168 if (netif_running(ndev)) {
2169 smc911x_reset(ndev);
2170 if (lp->phy_type != 0)
2171 smc911x_phy_configure(&lp->phy_configure);
2172 smc911x_enable(ndev);
2173 netif_device_attach(ndev);
2179 static struct platform_driver smc911x_driver = {
2180 .probe = smc911x_drv_probe,
2181 .remove = smc911x_drv_remove,
2182 .suspend = smc911x_drv_suspend,
2183 .resume = smc911x_drv_resume,
2189 module_platform_driver(smc911x_driver);