3 * This is a driver for SMSC's LAN911{5,6,7,8} single-chip Ethernet devices.
5 * Copyright (C) 2005 Sensoria Corp
6 * Derived from the unified SMC91x driver by Nicolas Pitre
7 * and the smsc911x.c reference driver by SMSC
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, see <http://www.gnu.org/licenses/>.
23 * watchdog = TX watchdog timeout
24 * tx_fifo_kb = Size of TX FIFO in KB
27 * 04/16/05 Dustin McIntire Initial version
29 static const char version
[] =
30 "smc911x.c: v1.0 04-16-2005 by Dustin McIntire <dustin@sensoria.com>\n";
32 /* Debugging options */
33 #define ENABLE_SMC_DEBUG_RX 0
34 #define ENABLE_SMC_DEBUG_TX 0
35 #define ENABLE_SMC_DEBUG_DMA 0
36 #define ENABLE_SMC_DEBUG_PKTS 0
37 #define ENABLE_SMC_DEBUG_MISC 0
38 #define ENABLE_SMC_DEBUG_FUNC 0
40 #define SMC_DEBUG_RX ((ENABLE_SMC_DEBUG_RX ? 1 : 0) << 0)
41 #define SMC_DEBUG_TX ((ENABLE_SMC_DEBUG_TX ? 1 : 0) << 1)
42 #define SMC_DEBUG_DMA ((ENABLE_SMC_DEBUG_DMA ? 1 : 0) << 2)
43 #define SMC_DEBUG_PKTS ((ENABLE_SMC_DEBUG_PKTS ? 1 : 0) << 3)
44 #define SMC_DEBUG_MISC ((ENABLE_SMC_DEBUG_MISC ? 1 : 0) << 4)
45 #define SMC_DEBUG_FUNC ((ENABLE_SMC_DEBUG_FUNC ? 1 : 0) << 5)
48 #define SMC_DEBUG ( SMC_DEBUG_RX | \
57 #include <linux/module.h>
58 #include <linux/kernel.h>
59 #include <linux/sched.h>
60 #include <linux/delay.h>
61 #include <linux/interrupt.h>
62 #include <linux/errno.h>
63 #include <linux/ioport.h>
64 #include <linux/crc32.h>
65 #include <linux/device.h>
66 #include <linux/platform_device.h>
67 #include <linux/spinlock.h>
68 #include <linux/ethtool.h>
69 #include <linux/mii.h>
70 #include <linux/workqueue.h>
72 #include <linux/netdevice.h>
73 #include <linux/etherdevice.h>
74 #include <linux/skbuff.h>
76 #include <linux/dmaengine.h>
83 * Transmit timeout, default 5 seconds.
85 static int watchdog
= 5000;
86 module_param(watchdog
, int, 0400);
87 MODULE_PARM_DESC(watchdog
, "transmit timeout in milliseconds");
89 static int tx_fifo_kb
=8;
90 module_param(tx_fifo_kb
, int, 0400);
91 MODULE_PARM_DESC(tx_fifo_kb
,"transmit FIFO size in KB (1<x<15)(default=8)");
93 MODULE_LICENSE("GPL");
94 MODULE_ALIAS("platform:smc911x");
97 * The internal workings of the driver. If you are changing anything
98 * here with the SMC stuff, you should have the datasheet and know
101 #define CARDNAME "smc911x"
104 * Use power-down feature of the chip
109 #define DBG(n, dev, args...) \
111 if (SMC_DEBUG & (n)) \
112 netdev_dbg(dev, args); \
115 #define PRINTK(dev, args...) netdev_info(dev, args)
117 #define DBG(n, dev, args...) do { } while (0)
118 #define PRINTK(dev, args...) netdev_dbg(dev, args)
121 #if SMC_DEBUG_PKTS > 0
122 static void PRINT_PKT(u_char
*buf
, int length
)
129 remainder
= length
% 16;
131 for (i
= 0; i
< lines
; i
++) {
134 for (cur
= 0; cur
< 8; cur
++) {
138 pr_cont("%02x%02x ", a
, b
);
143 for (i
= 0; i
< remainder
/2 ; i
++) {
147 pr_cont("%02x%02x ", a
, b
);
152 #define PRINT_PKT(x...) do { } while (0)
156 /* this enables an interrupt in the interrupt mask register */
157 #define SMC_ENABLE_INT(lp, x) do { \
158 unsigned int __mask; \
159 __mask = SMC_GET_INT_EN((lp)); \
161 SMC_SET_INT_EN((lp), __mask); \
164 /* this disables an interrupt from the interrupt mask register */
165 #define SMC_DISABLE_INT(lp, x) do { \
166 unsigned int __mask; \
167 __mask = SMC_GET_INT_EN((lp)); \
169 SMC_SET_INT_EN((lp), __mask); \
173 * this does a soft reset on the device
175 static void smc911x_reset(struct net_device
*dev
)
177 struct smc911x_local
*lp
= netdev_priv(dev
);
178 unsigned int reg
, timeout
=0, resets
=1, irq_cfg
;
181 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
183 /* Take out of PM setting first */
184 if ((SMC_GET_PMT_CTRL(lp
) & PMT_CTRL_READY_
) == 0) {
185 /* Write to the bytetest will take out of powerdown */
186 SMC_SET_BYTE_TEST(lp
, 0);
190 reg
= SMC_GET_PMT_CTRL(lp
) & PMT_CTRL_READY_
;
191 } while (--timeout
&& !reg
);
193 PRINTK(dev
, "smc911x_reset timeout waiting for PM restore\n");
198 /* Disable all interrupts */
199 spin_lock_irqsave(&lp
->lock
, flags
);
200 SMC_SET_INT_EN(lp
, 0);
201 spin_unlock_irqrestore(&lp
->lock
, flags
);
204 SMC_SET_HW_CFG(lp
, HW_CFG_SRST_
);
208 reg
= SMC_GET_HW_CFG(lp
);
209 /* If chip indicates reset timeout then try again */
210 if (reg
& HW_CFG_SRST_TO_
) {
211 PRINTK(dev
, "chip reset timeout, retrying...\n");
215 } while (--timeout
&& (reg
& HW_CFG_SRST_
));
218 PRINTK(dev
, "smc911x_reset timeout waiting for reset\n");
222 /* make sure EEPROM has finished loading before setting GPIO_CFG */
224 while (--timeout
&& (SMC_GET_E2P_CMD(lp
) & E2P_CMD_EPC_BUSY_
))
228 PRINTK(dev
, "smc911x_reset timeout waiting for EEPROM busy\n");
232 /* Initialize interrupts */
233 SMC_SET_INT_EN(lp
, 0);
236 /* Reset the FIFO level and flow control settings */
237 SMC_SET_HW_CFG(lp
, (lp
->tx_fifo_kb
& 0xF) << 16);
238 //TODO: Figure out what appropriate pause time is
239 SMC_SET_FLOW(lp
, FLOW_FCPT_
| FLOW_FCEN_
);
240 SMC_SET_AFC_CFG(lp
, lp
->afc_cfg
);
243 /* Set to LED outputs */
244 SMC_SET_GPIO_CFG(lp
, 0x70070000);
247 * Deassert IRQ for 1*10us for edge type interrupts
248 * and drive IRQ pin push-pull
250 irq_cfg
= (1 << 24) | INT_CFG_IRQ_EN_
| INT_CFG_IRQ_TYPE_
;
251 #ifdef SMC_DYNAMIC_BUS_CONFIG
252 if (lp
->cfg
.irq_polarity
)
253 irq_cfg
|= INT_CFG_IRQ_POL_
;
255 SMC_SET_IRQ_CFG(lp
, irq_cfg
);
257 /* clear anything saved */
258 if (lp
->pending_tx_skb
!= NULL
) {
259 dev_kfree_skb (lp
->pending_tx_skb
);
260 lp
->pending_tx_skb
= NULL
;
261 dev
->stats
.tx_errors
++;
262 dev
->stats
.tx_aborted_errors
++;
267 * Enable Interrupts, Receive, and Transmit
269 static void smc911x_enable(struct net_device
*dev
)
271 struct smc911x_local
*lp
= netdev_priv(dev
);
272 unsigned mask
, cfg
, cr
;
275 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
277 spin_lock_irqsave(&lp
->lock
, flags
);
279 SMC_SET_MAC_ADDR(lp
, dev
->dev_addr
);
282 cfg
= SMC_GET_HW_CFG(lp
);
283 cfg
&= HW_CFG_TX_FIF_SZ_
| 0xFFF;
285 SMC_SET_HW_CFG(lp
, cfg
);
286 SMC_SET_FIFO_TDA(lp
, 0xFF);
287 /* Update TX stats on every 64 packets received or every 1 sec */
288 SMC_SET_FIFO_TSL(lp
, 64);
289 SMC_SET_GPT_CFG(lp
, GPT_CFG_TIMER_EN_
| 10000);
291 SMC_GET_MAC_CR(lp
, cr
);
292 cr
|= MAC_CR_TXEN_
| MAC_CR_HBDIS_
;
293 SMC_SET_MAC_CR(lp
, cr
);
294 SMC_SET_TX_CFG(lp
, TX_CFG_TX_ON_
);
296 /* Add 2 byte padding to start of packets */
297 SMC_SET_RX_CFG(lp
, (2<<8) & RX_CFG_RXDOFF_
);
299 /* Turn on receiver and enable RX */
300 if (cr
& MAC_CR_RXEN_
)
301 DBG(SMC_DEBUG_RX
, dev
, "Receiver already enabled\n");
303 SMC_SET_MAC_CR(lp
, cr
| MAC_CR_RXEN_
);
305 /* Interrupt on every received packet */
306 SMC_SET_FIFO_RSA(lp
, 0x01);
307 SMC_SET_FIFO_RSL(lp
, 0x00);
309 /* now, enable interrupts */
310 mask
= INT_EN_TDFA_EN_
| INT_EN_TSFL_EN_
| INT_EN_RSFL_EN_
|
311 INT_EN_GPT_INT_EN_
| INT_EN_RXDFH_INT_EN_
| INT_EN_RXE_EN_
|
313 if (IS_REV_A(lp
->revision
))
314 mask
|=INT_EN_RDFL_EN_
;
316 mask
|=INT_EN_RDFO_EN_
;
318 SMC_ENABLE_INT(lp
, mask
);
320 spin_unlock_irqrestore(&lp
->lock
, flags
);
324 * this puts the device in an inactive state
326 static void smc911x_shutdown(struct net_device
*dev
)
328 struct smc911x_local
*lp
= netdev_priv(dev
);
332 DBG(SMC_DEBUG_FUNC
, dev
, "%s: --> %s\n", CARDNAME
, __func__
);
335 SMC_SET_INT_EN(lp
, 0);
337 /* Turn of Rx and TX */
338 spin_lock_irqsave(&lp
->lock
, flags
);
339 SMC_GET_MAC_CR(lp
, cr
);
340 cr
&= ~(MAC_CR_TXEN_
| MAC_CR_RXEN_
| MAC_CR_HBDIS_
);
341 SMC_SET_MAC_CR(lp
, cr
);
342 SMC_SET_TX_CFG(lp
, TX_CFG_STOP_TX_
);
343 spin_unlock_irqrestore(&lp
->lock
, flags
);
346 static inline void smc911x_drop_pkt(struct net_device
*dev
)
348 struct smc911x_local
*lp
= netdev_priv(dev
);
349 unsigned int fifo_count
, timeout
, reg
;
351 DBG(SMC_DEBUG_FUNC
| SMC_DEBUG_RX
, dev
, "%s: --> %s\n",
353 fifo_count
= SMC_GET_RX_FIFO_INF(lp
) & 0xFFFF;
354 if (fifo_count
<= 4) {
355 /* Manually dump the packet data */
359 /* Fast forward through the bad packet */
360 SMC_SET_RX_DP_CTRL(lp
, RX_DP_CTRL_FFWD_BUSY_
);
364 reg
= SMC_GET_RX_DP_CTRL(lp
) & RX_DP_CTRL_FFWD_BUSY_
;
365 } while (--timeout
&& reg
);
367 PRINTK(dev
, "timeout waiting for RX fast forward\n");
373 * This is the procedure to handle the receipt of a packet.
374 * It should be called after checking for packet presence in
375 * the RX status FIFO. It must be called with the spin lock
378 static inline void smc911x_rcv(struct net_device
*dev
)
380 struct smc911x_local
*lp
= netdev_priv(dev
);
381 unsigned int pkt_len
, status
;
385 DBG(SMC_DEBUG_FUNC
| SMC_DEBUG_RX
, dev
, "--> %s\n",
387 status
= SMC_GET_RX_STS_FIFO(lp
);
388 DBG(SMC_DEBUG_RX
, dev
, "Rx pkt len %d status 0x%08x\n",
389 (status
& 0x3fff0000) >> 16, status
& 0xc000ffff);
390 pkt_len
= (status
& RX_STS_PKT_LEN_
) >> 16;
391 if (status
& RX_STS_ES_
) {
392 /* Deal with a bad packet */
393 dev
->stats
.rx_errors
++;
394 if (status
& RX_STS_CRC_ERR_
)
395 dev
->stats
.rx_crc_errors
++;
397 if (status
& RX_STS_LEN_ERR_
)
398 dev
->stats
.rx_length_errors
++;
399 if (status
& RX_STS_MCAST_
)
400 dev
->stats
.multicast
++;
402 /* Remove the bad packet data from the RX FIFO */
403 smc911x_drop_pkt(dev
);
405 /* Receive a valid packet */
406 /* Alloc a buffer with extra room for DMA alignment */
407 skb
= netdev_alloc_skb(dev
, pkt_len
+32);
408 if (unlikely(skb
== NULL
)) {
409 PRINTK(dev
, "Low memory, rcvd packet dropped.\n");
410 dev
->stats
.rx_dropped
++;
411 smc911x_drop_pkt(dev
);
414 /* Align IP header to 32 bits
415 * Note that the device is configured to add a 2
416 * byte padding to the packet start, so we really
417 * want to write to the orignal data pointer */
420 skb_put(skb
,pkt_len
-4);
424 /* Lower the FIFO threshold if possible */
425 fifo
= SMC_GET_FIFO_INT(lp
);
426 if (fifo
& 0xFF) fifo
--;
427 DBG(SMC_DEBUG_RX
, dev
, "Setting RX stat FIFO threshold to %d\n",
429 SMC_SET_FIFO_INT(lp
, fifo
);
431 SMC_SET_RX_CFG(lp
, RX_CFG_RX_END_ALGN16_
| ((2<<8) & RX_CFG_RXDOFF_
));
432 lp
->rxdma_active
= 1;
433 lp
->current_rx_skb
= skb
;
434 SMC_PULL_DATA(lp
, data
, (pkt_len
+2+15) & ~15);
435 /* Packet processing deferred to DMA RX interrupt */
438 SMC_SET_RX_CFG(lp
, RX_CFG_RX_END_ALGN4_
| ((2<<8) & RX_CFG_RXDOFF_
));
439 SMC_PULL_DATA(lp
, data
, pkt_len
+2+3);
441 DBG(SMC_DEBUG_PKTS
, dev
, "Received packet\n");
442 PRINT_PKT(data
, ((pkt_len
- 4) <= 64) ? pkt_len
- 4 : 64);
443 skb
->protocol
= eth_type_trans(skb
, dev
);
445 dev
->stats
.rx_packets
++;
446 dev
->stats
.rx_bytes
+= pkt_len
-4;
452 * This is called to actually send a packet to the chip.
454 static void smc911x_hardware_send_pkt(struct net_device
*dev
)
456 struct smc911x_local
*lp
= netdev_priv(dev
);
458 unsigned int cmdA
, cmdB
, len
;
461 DBG(SMC_DEBUG_FUNC
| SMC_DEBUG_TX
, dev
, "--> %s\n", __func__
);
462 BUG_ON(lp
->pending_tx_skb
== NULL
);
464 skb
= lp
->pending_tx_skb
;
465 lp
->pending_tx_skb
= NULL
;
467 /* cmdA {25:24] data alignment [20:16] start offset [10:0] buffer length */
468 /* cmdB {31:16] pkt tag [10:0] length */
470 /* 16 byte buffer alignment mode */
471 buf
= (char*)((u32
)(skb
->data
) & ~0xF);
472 len
= (skb
->len
+ 0xF + ((u32
)skb
->data
& 0xF)) & ~0xF;
473 cmdA
= (1<<24) | (((u32
)skb
->data
& 0xF)<<16) |
474 TX_CMD_A_INT_FIRST_SEG_
| TX_CMD_A_INT_LAST_SEG_
|
477 buf
= (char*)((u32
)skb
->data
& ~0x3);
478 len
= (skb
->len
+ 3 + ((u32
)skb
->data
& 3)) & ~0x3;
479 cmdA
= (((u32
)skb
->data
& 0x3) << 16) |
480 TX_CMD_A_INT_FIRST_SEG_
| TX_CMD_A_INT_LAST_SEG_
|
483 /* tag is packet length so we can use this in stats update later */
484 cmdB
= (skb
->len
<< 16) | (skb
->len
& 0x7FF);
486 DBG(SMC_DEBUG_TX
, dev
, "TX PKT LENGTH 0x%04x (%d) BUF 0x%p CMDA 0x%08x CMDB 0x%08x\n",
487 len
, len
, buf
, cmdA
, cmdB
);
488 SMC_SET_TX_FIFO(lp
, cmdA
);
489 SMC_SET_TX_FIFO(lp
, cmdB
);
491 DBG(SMC_DEBUG_PKTS
, dev
, "Transmitted packet\n");
492 PRINT_PKT(buf
, len
<= 64 ? len
: 64);
494 /* Send pkt via PIO or DMA */
496 lp
->current_tx_skb
= skb
;
497 SMC_PUSH_DATA(lp
, buf
, len
);
498 /* DMA complete IRQ will free buffer and set jiffies */
500 SMC_PUSH_DATA(lp
, buf
, len
);
501 netif_trans_update(dev
);
502 dev_kfree_skb_irq(skb
);
504 if (!lp
->tx_throttle
) {
505 netif_wake_queue(dev
);
507 SMC_ENABLE_INT(lp
, INT_EN_TDFA_EN_
| INT_EN_TSFL_EN_
);
511 * Since I am not sure if I will have enough room in the chip's ram
512 * to store the packet, I call this routine which either sends it
513 * now, or set the card to generates an interrupt when ready
517 smc911x_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
519 struct smc911x_local
*lp
= netdev_priv(dev
);
523 DBG(SMC_DEBUG_FUNC
| SMC_DEBUG_TX
, dev
, "--> %s\n",
526 spin_lock_irqsave(&lp
->lock
, flags
);
528 BUG_ON(lp
->pending_tx_skb
!= NULL
);
530 free
= SMC_GET_TX_FIFO_INF(lp
) & TX_FIFO_INF_TDFREE_
;
531 DBG(SMC_DEBUG_TX
, dev
, "TX free space %d\n", free
);
533 /* Turn off the flow when running out of space in FIFO */
534 if (free
<= SMC911X_TX_FIFO_LOW_THRESHOLD
) {
535 DBG(SMC_DEBUG_TX
, dev
, "Disabling data flow due to low FIFO space (%d)\n",
537 /* Reenable when at least 1 packet of size MTU present */
538 SMC_SET_FIFO_TDA(lp
, (SMC911X_TX_FIFO_LOW_THRESHOLD
)/64);
540 netif_stop_queue(dev
);
543 /* Drop packets when we run out of space in TX FIFO
544 * Account for overhead required for:
546 * Tx command words 8 bytes
547 * Start offset 15 bytes
548 * End padding 15 bytes
550 if (unlikely(free
< (skb
->len
+ 8 + 15 + 15))) {
551 netdev_warn(dev
, "No Tx free space %d < %d\n",
553 lp
->pending_tx_skb
= NULL
;
554 dev
->stats
.tx_errors
++;
555 dev
->stats
.tx_dropped
++;
556 spin_unlock_irqrestore(&lp
->lock
, flags
);
557 dev_kfree_skb_any(skb
);
563 /* If the DMA is already running then defer this packet Tx until
564 * the DMA IRQ starts it
566 if (lp
->txdma_active
) {
567 DBG(SMC_DEBUG_TX
| SMC_DEBUG_DMA
, dev
, "Tx DMA running, deferring packet\n");
568 lp
->pending_tx_skb
= skb
;
569 netif_stop_queue(dev
);
570 spin_unlock_irqrestore(&lp
->lock
, flags
);
573 DBG(SMC_DEBUG_TX
| SMC_DEBUG_DMA
, dev
, "Activating Tx DMA\n");
574 lp
->txdma_active
= 1;
578 lp
->pending_tx_skb
= skb
;
579 smc911x_hardware_send_pkt(dev
);
580 spin_unlock_irqrestore(&lp
->lock
, flags
);
586 * This handles a TX status interrupt, which is only called when:
587 * - a TX error occurred, or
588 * - TX of a packet completed.
590 static void smc911x_tx(struct net_device
*dev
)
592 struct smc911x_local
*lp
= netdev_priv(dev
);
593 unsigned int tx_status
;
595 DBG(SMC_DEBUG_FUNC
| SMC_DEBUG_TX
, dev
, "--> %s\n",
598 /* Collect the TX status */
599 while (((SMC_GET_TX_FIFO_INF(lp
) & TX_FIFO_INF_TSUSED_
) >> 16) != 0) {
600 DBG(SMC_DEBUG_TX
, dev
, "Tx stat FIFO used 0x%04x\n",
601 (SMC_GET_TX_FIFO_INF(lp
) & TX_FIFO_INF_TSUSED_
) >> 16);
602 tx_status
= SMC_GET_TX_STS_FIFO(lp
);
603 dev
->stats
.tx_packets
++;
604 dev
->stats
.tx_bytes
+=tx_status
>>16;
605 DBG(SMC_DEBUG_TX
, dev
, "Tx FIFO tag 0x%04x status 0x%04x\n",
606 (tx_status
& 0xffff0000) >> 16,
607 tx_status
& 0x0000ffff);
608 /* count Tx errors, but ignore lost carrier errors when in
609 * full-duplex mode */
610 if ((tx_status
& TX_STS_ES_
) && !(lp
->ctl_rfduplx
&&
611 !(tx_status
& 0x00000306))) {
612 dev
->stats
.tx_errors
++;
614 if (tx_status
& TX_STS_MANY_COLL_
) {
615 dev
->stats
.collisions
+=16;
616 dev
->stats
.tx_aborted_errors
++;
618 dev
->stats
.collisions
+=(tx_status
& TX_STS_COLL_CNT_
) >> 3;
620 /* carrier error only has meaning for half-duplex communication */
621 if ((tx_status
& (TX_STS_LOC_
| TX_STS_NO_CARR_
)) &&
623 dev
->stats
.tx_carrier_errors
++;
625 if (tx_status
& TX_STS_LATE_COLL_
) {
626 dev
->stats
.collisions
++;
627 dev
->stats
.tx_aborted_errors
++;
633 /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
635 * Reads a register from the MII Management serial interface
638 static int smc911x_phy_read(struct net_device
*dev
, int phyaddr
, int phyreg
)
640 struct smc911x_local
*lp
= netdev_priv(dev
);
641 unsigned int phydata
;
643 SMC_GET_MII(lp
, phyreg
, phyaddr
, phydata
);
645 DBG(SMC_DEBUG_MISC
, dev
, "%s: phyaddr=0x%x, phyreg=0x%02x, phydata=0x%04x\n",
646 __func__
, phyaddr
, phyreg
, phydata
);
652 * Writes a register to the MII Management serial interface
654 static void smc911x_phy_write(struct net_device
*dev
, int phyaddr
, int phyreg
,
657 struct smc911x_local
*lp
= netdev_priv(dev
);
659 DBG(SMC_DEBUG_MISC
, dev
, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
660 __func__
, phyaddr
, phyreg
, phydata
);
662 SMC_SET_MII(lp
, phyreg
, phyaddr
, phydata
);
666 * Finds and reports the PHY address (115 and 117 have external
667 * PHY interface 118 has internal only
669 static void smc911x_phy_detect(struct net_device
*dev
)
671 struct smc911x_local
*lp
= netdev_priv(dev
);
673 unsigned int cfg
, id1
, id2
;
675 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
680 * Scan all 32 PHY addresses if necessary, starting at
681 * PHY#1 to PHY#31, and then PHY#0 last.
683 switch(lp
->version
) {
688 cfg
= SMC_GET_HW_CFG(lp
);
689 if (cfg
& HW_CFG_EXT_PHY_DET_
) {
690 cfg
&= ~HW_CFG_PHY_CLK_SEL_
;
691 cfg
|= HW_CFG_PHY_CLK_SEL_CLK_DIS_
;
692 SMC_SET_HW_CFG(lp
, cfg
);
693 udelay(10); /* Wait for clocks to stop */
695 cfg
|= HW_CFG_EXT_PHY_EN_
;
696 SMC_SET_HW_CFG(lp
, cfg
);
697 udelay(10); /* Wait for clocks to stop */
699 cfg
&= ~HW_CFG_PHY_CLK_SEL_
;
700 cfg
|= HW_CFG_PHY_CLK_SEL_EXT_PHY_
;
701 SMC_SET_HW_CFG(lp
, cfg
);
702 udelay(10); /* Wait for clocks to stop */
704 cfg
|= HW_CFG_SMI_SEL_
;
705 SMC_SET_HW_CFG(lp
, cfg
);
707 for (phyaddr
= 1; phyaddr
< 32; ++phyaddr
) {
709 /* Read the PHY identifiers */
710 SMC_GET_PHY_ID1(lp
, phyaddr
& 31, id1
);
711 SMC_GET_PHY_ID2(lp
, phyaddr
& 31, id2
);
713 /* Make sure it is a valid identifier */
714 if (id1
!= 0x0000 && id1
!= 0xffff &&
715 id1
!= 0x8000 && id2
!= 0x0000 &&
716 id2
!= 0xffff && id2
!= 0x8000) {
717 /* Save the PHY's address */
718 lp
->mii
.phy_id
= phyaddr
& 31;
719 lp
->phy_type
= id1
<< 16 | id2
;
724 /* Found an external PHY */
728 /* Internal media only */
729 SMC_GET_PHY_ID1(lp
, 1, id1
);
730 SMC_GET_PHY_ID2(lp
, 1, id2
);
731 /* Save the PHY's address */
733 lp
->phy_type
= id1
<< 16 | id2
;
736 DBG(SMC_DEBUG_MISC
, dev
, "phy_id1=0x%x, phy_id2=0x%x phyaddr=0x%x\n",
737 id1
, id2
, lp
->mii
.phy_id
);
741 * Sets the PHY to a configuration as determined by the user.
742 * Called with spin_lock held.
744 static int smc911x_phy_fixed(struct net_device
*dev
)
746 struct smc911x_local
*lp
= netdev_priv(dev
);
747 int phyaddr
= lp
->mii
.phy_id
;
750 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
752 /* Enter Link Disable state */
753 SMC_GET_PHY_BMCR(lp
, phyaddr
, bmcr
);
755 SMC_SET_PHY_BMCR(lp
, phyaddr
, bmcr
);
758 * Set our fixed capabilities
759 * Disable auto-negotiation
761 bmcr
&= ~BMCR_ANENABLE
;
763 bmcr
|= BMCR_FULLDPLX
;
765 if (lp
->ctl_rspeed
== 100)
766 bmcr
|= BMCR_SPEED100
;
768 /* Write our capabilities to the phy control register */
769 SMC_SET_PHY_BMCR(lp
, phyaddr
, bmcr
);
771 /* Re-Configure the Receive/Phy Control register */
773 SMC_SET_PHY_BMCR(lp
, phyaddr
, bmcr
);
779 * smc911x_phy_reset - reset the phy
783 * Issue a software reset for the specified PHY and
784 * wait up to 100ms for the reset to complete. We should
785 * not access the PHY for 50ms after issuing the reset.
787 * The time to wait appears to be dependent on the PHY.
790 static int smc911x_phy_reset(struct net_device
*dev
, int phy
)
792 struct smc911x_local
*lp
= netdev_priv(dev
);
797 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s()\n", __func__
);
799 spin_lock_irqsave(&lp
->lock
, flags
);
800 reg
= SMC_GET_PMT_CTRL(lp
);
802 reg
|= PMT_CTRL_PHY_RST_
;
803 SMC_SET_PMT_CTRL(lp
, reg
);
804 spin_unlock_irqrestore(&lp
->lock
, flags
);
805 for (timeout
= 2; timeout
; timeout
--) {
807 spin_lock_irqsave(&lp
->lock
, flags
);
808 reg
= SMC_GET_PMT_CTRL(lp
);
809 spin_unlock_irqrestore(&lp
->lock
, flags
);
810 if (!(reg
& PMT_CTRL_PHY_RST_
)) {
811 /* extra delay required because the phy may
812 * not be completed with its reset
813 * when PHY_BCR_RESET_ is cleared. 256us
814 * should suffice, but use 500us to be safe
821 return reg
& PMT_CTRL_PHY_RST_
;
825 * smc911x_phy_powerdown - powerdown phy
829 * Power down the specified PHY
831 static void smc911x_phy_powerdown(struct net_device
*dev
, int phy
)
833 struct smc911x_local
*lp
= netdev_priv(dev
);
836 /* Enter Link Disable state */
837 SMC_GET_PHY_BMCR(lp
, phy
, bmcr
);
839 SMC_SET_PHY_BMCR(lp
, phy
, bmcr
);
843 * smc911x_phy_check_media - check the media status and adjust BMCR
845 * @init: set true for initialisation
847 * Select duplex mode depending on negotiation state. This
848 * also updates our carrier state.
850 static void smc911x_phy_check_media(struct net_device
*dev
, int init
)
852 struct smc911x_local
*lp
= netdev_priv(dev
);
853 int phyaddr
= lp
->mii
.phy_id
;
854 unsigned int bmcr
, cr
;
856 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
858 if (mii_check_media(&lp
->mii
, netif_msg_link(lp
), init
)) {
859 /* duplex state has changed */
860 SMC_GET_PHY_BMCR(lp
, phyaddr
, bmcr
);
861 SMC_GET_MAC_CR(lp
, cr
);
862 if (lp
->mii
.full_duplex
) {
863 DBG(SMC_DEBUG_MISC
, dev
, "Configuring for full-duplex mode\n");
864 bmcr
|= BMCR_FULLDPLX
;
865 cr
|= MAC_CR_RCVOWN_
;
867 DBG(SMC_DEBUG_MISC
, dev
, "Configuring for half-duplex mode\n");
868 bmcr
&= ~BMCR_FULLDPLX
;
869 cr
&= ~MAC_CR_RCVOWN_
;
871 SMC_SET_PHY_BMCR(lp
, phyaddr
, bmcr
);
872 SMC_SET_MAC_CR(lp
, cr
);
877 * Configures the specified PHY through the MII management interface
878 * using Autonegotiation.
879 * Calls smc911x_phy_fixed() if the user has requested a certain config.
880 * If RPC ANEG bit is set, the media selection is dependent purely on
881 * the selection by the MII (either in the MII BMCR reg or the result
882 * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
883 * is controlled by the RPC SPEED and RPC DPLX bits.
885 static void smc911x_phy_configure(struct work_struct
*work
)
887 struct smc911x_local
*lp
= container_of(work
, struct smc911x_local
,
889 struct net_device
*dev
= lp
->netdev
;
890 int phyaddr
= lp
->mii
.phy_id
;
891 int my_phy_caps
; /* My PHY capabilities */
892 int my_ad_caps
; /* My Advertised capabilities */
896 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s()\n", __func__
);
899 * We should not be called if phy_type is zero.
901 if (lp
->phy_type
== 0)
904 if (smc911x_phy_reset(dev
, phyaddr
)) {
905 netdev_info(dev
, "PHY reset timed out\n");
908 spin_lock_irqsave(&lp
->lock
, flags
);
911 * Enable PHY Interrupts (for register 18)
912 * Interrupts listed here are enabled
914 SMC_SET_PHY_INT_MASK(lp
, phyaddr
, PHY_INT_MASK_ENERGY_ON_
|
915 PHY_INT_MASK_ANEG_COMP_
| PHY_INT_MASK_REMOTE_FAULT_
|
916 PHY_INT_MASK_LINK_DOWN_
);
918 /* If the user requested no auto neg, then go set his request */
919 if (lp
->mii
.force_media
) {
920 smc911x_phy_fixed(dev
);
921 goto smc911x_phy_configure_exit
;
924 /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
925 SMC_GET_PHY_BMSR(lp
, phyaddr
, my_phy_caps
);
926 if (!(my_phy_caps
& BMSR_ANEGCAPABLE
)) {
927 netdev_info(dev
, "Auto negotiation NOT supported\n");
928 smc911x_phy_fixed(dev
);
929 goto smc911x_phy_configure_exit
;
932 /* CSMA capable w/ both pauses */
933 my_ad_caps
= ADVERTISE_CSMA
| ADVERTISE_PAUSE_CAP
| ADVERTISE_PAUSE_ASYM
;
935 if (my_phy_caps
& BMSR_100BASE4
)
936 my_ad_caps
|= ADVERTISE_100BASE4
;
937 if (my_phy_caps
& BMSR_100FULL
)
938 my_ad_caps
|= ADVERTISE_100FULL
;
939 if (my_phy_caps
& BMSR_100HALF
)
940 my_ad_caps
|= ADVERTISE_100HALF
;
941 if (my_phy_caps
& BMSR_10FULL
)
942 my_ad_caps
|= ADVERTISE_10FULL
;
943 if (my_phy_caps
& BMSR_10HALF
)
944 my_ad_caps
|= ADVERTISE_10HALF
;
946 /* Disable capabilities not selected by our user */
947 if (lp
->ctl_rspeed
!= 100)
948 my_ad_caps
&= ~(ADVERTISE_100BASE4
|ADVERTISE_100FULL
|ADVERTISE_100HALF
);
950 if (!lp
->ctl_rfduplx
)
951 my_ad_caps
&= ~(ADVERTISE_100FULL
|ADVERTISE_10FULL
);
953 /* Update our Auto-Neg Advertisement Register */
954 SMC_SET_PHY_MII_ADV(lp
, phyaddr
, my_ad_caps
);
955 lp
->mii
.advertising
= my_ad_caps
;
958 * Read the register back. Without this, it appears that when
959 * auto-negotiation is restarted, sometimes it isn't ready and
960 * the link does not come up.
963 SMC_GET_PHY_MII_ADV(lp
, phyaddr
, status
);
965 DBG(SMC_DEBUG_MISC
, dev
, "phy caps=0x%04x\n", my_phy_caps
);
966 DBG(SMC_DEBUG_MISC
, dev
, "phy advertised caps=0x%04x\n", my_ad_caps
);
968 /* Restart auto-negotiation process in order to advertise my caps */
969 SMC_SET_PHY_BMCR(lp
, phyaddr
, BMCR_ANENABLE
| BMCR_ANRESTART
);
971 smc911x_phy_check_media(dev
, 1);
973 smc911x_phy_configure_exit
:
974 spin_unlock_irqrestore(&lp
->lock
, flags
);
978 * smc911x_phy_interrupt
980 * Purpose: Handle interrupts relating to PHY register 18. This is
981 * called from the "hard" interrupt handler under our private spinlock.
983 static void smc911x_phy_interrupt(struct net_device
*dev
)
985 struct smc911x_local
*lp
= netdev_priv(dev
);
986 int phyaddr
= lp
->mii
.phy_id
;
989 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
991 if (lp
->phy_type
== 0)
994 smc911x_phy_check_media(dev
, 0);
995 /* read to clear status bits */
996 SMC_GET_PHY_INT_SRC(lp
, phyaddr
,status
);
997 DBG(SMC_DEBUG_MISC
, dev
, "PHY interrupt status 0x%04x\n",
999 DBG(SMC_DEBUG_MISC
, dev
, "AFC_CFG 0x%08x\n",
1000 SMC_GET_AFC_CFG(lp
));
1003 /*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
1006 * This is the main routine of the driver, to handle the device when
1007 * it needs some attention.
1009 static irqreturn_t
smc911x_interrupt(int irq
, void *dev_id
)
1011 struct net_device
*dev
= dev_id
;
1012 struct smc911x_local
*lp
= netdev_priv(dev
);
1013 unsigned int status
, mask
, timeout
;
1014 unsigned int rx_overrun
=0, cr
, pkts
;
1015 unsigned long flags
;
1017 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1019 spin_lock_irqsave(&lp
->lock
, flags
);
1021 /* Spurious interrupt check */
1022 if ((SMC_GET_IRQ_CFG(lp
) & (INT_CFG_IRQ_INT_
| INT_CFG_IRQ_EN_
)) !=
1023 (INT_CFG_IRQ_INT_
| INT_CFG_IRQ_EN_
)) {
1024 spin_unlock_irqrestore(&lp
->lock
, flags
);
1028 mask
= SMC_GET_INT_EN(lp
);
1029 SMC_SET_INT_EN(lp
, 0);
1031 /* set a timeout value, so I don't stay here forever */
1036 status
= SMC_GET_INT(lp
);
1038 DBG(SMC_DEBUG_MISC
, dev
, "INT 0x%08x MASK 0x%08x OUTSIDE MASK 0x%08x\n",
1039 status
, mask
, status
& ~mask
);
1045 /* Handle SW interrupt condition */
1046 if (status
& INT_STS_SW_INT_
) {
1047 SMC_ACK_INT(lp
, INT_STS_SW_INT_
);
1048 mask
&= ~INT_EN_SW_INT_EN_
;
1050 /* Handle various error conditions */
1051 if (status
& INT_STS_RXE_
) {
1052 SMC_ACK_INT(lp
, INT_STS_RXE_
);
1053 dev
->stats
.rx_errors
++;
1055 if (status
& INT_STS_RXDFH_INT_
) {
1056 SMC_ACK_INT(lp
, INT_STS_RXDFH_INT_
);
1057 dev
->stats
.rx_dropped
+=SMC_GET_RX_DROP(lp
);
1059 /* Undocumented interrupt-what is the right thing to do here? */
1060 if (status
& INT_STS_RXDF_INT_
) {
1061 SMC_ACK_INT(lp
, INT_STS_RXDF_INT_
);
1064 /* Rx Data FIFO exceeds set level */
1065 if (status
& INT_STS_RDFL_
) {
1066 if (IS_REV_A(lp
->revision
)) {
1068 SMC_GET_MAC_CR(lp
, cr
);
1069 cr
&= ~MAC_CR_RXEN_
;
1070 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_RDFL_
);
1077 if (status
& INT_STS_RDFO_
) {
1078 if (!IS_REV_A(lp
->revision
)) {
1079 SMC_GET_MAC_CR(lp
, cr
);
1080 cr
&= ~MAC_CR_RXEN_
;
1081 SMC_SET_MAC_CR(lp
, cr
);
1083 DBG(SMC_DEBUG_RX
, dev
, "RX overrun\n");
1084 dev
->stats
.rx_errors
++;
1085 dev
->stats
.rx_fifo_errors
++;
1087 SMC_ACK_INT(lp
, INT_STS_RDFO_
);
1089 /* Handle receive condition */
1090 if ((status
& INT_STS_RSFL_
) || rx_overrun
) {
1092 DBG(SMC_DEBUG_RX
, dev
, "RX irq\n");
1093 fifo
= SMC_GET_RX_FIFO_INF(lp
);
1094 pkts
= (fifo
& RX_FIFO_INF_RXSUSED_
) >> 16;
1095 DBG(SMC_DEBUG_RX
, dev
, "Rx FIFO pkts %d, bytes %d\n",
1096 pkts
, fifo
& 0xFFFF);
1100 if (lp
->rxdma_active
){
1101 DBG(SMC_DEBUG_RX
| SMC_DEBUG_DMA
, dev
,
1103 /* The DMA is already running so up the IRQ threshold */
1104 fifo
= SMC_GET_FIFO_INT(lp
) & ~0xFF;
1105 fifo
|= pkts
& 0xFF;
1106 DBG(SMC_DEBUG_RX
, dev
,
1107 "Setting RX stat FIFO threshold to %d\n",
1109 SMC_SET_FIFO_INT(lp
, fifo
);
1114 SMC_ACK_INT(lp
, INT_STS_RSFL_
);
1116 /* Handle transmit FIFO available */
1117 if (status
& INT_STS_TDFA_
) {
1118 DBG(SMC_DEBUG_TX
, dev
, "TX data FIFO space available irq\n");
1119 SMC_SET_FIFO_TDA(lp
, 0xFF);
1120 lp
->tx_throttle
= 0;
1122 if (!lp
->txdma_active
)
1124 netif_wake_queue(dev
);
1125 SMC_ACK_INT(lp
, INT_STS_TDFA_
);
1127 /* Handle transmit done condition */
1129 if (status
& (INT_STS_TSFL_
| INT_STS_GPT_INT_
)) {
1130 DBG(SMC_DEBUG_TX
| SMC_DEBUG_MISC
, dev
,
1131 "Tx stat FIFO limit (%d) /GPT irq\n",
1132 (SMC_GET_FIFO_INT(lp
) & 0x00ff0000) >> 16);
1134 SMC_SET_GPT_CFG(lp
, GPT_CFG_TIMER_EN_
| 10000);
1135 SMC_ACK_INT(lp
, INT_STS_TSFL_
);
1136 SMC_ACK_INT(lp
, INT_STS_TSFL_
| INT_STS_GPT_INT_
);
1139 if (status
& INT_STS_TSFL_
) {
1140 DBG(SMC_DEBUG_TX
, dev
, "TX status FIFO limit (%d) irq\n", ?);
1142 SMC_ACK_INT(lp
, INT_STS_TSFL_
);
1145 if (status
& INT_STS_GPT_INT_
) {
1146 DBG(SMC_DEBUG_RX
, dev
, "IRQ_CFG 0x%08x FIFO_INT 0x%08x RX_CFG 0x%08x\n",
1147 SMC_GET_IRQ_CFG(lp
),
1148 SMC_GET_FIFO_INT(lp
),
1149 SMC_GET_RX_CFG(lp
));
1150 DBG(SMC_DEBUG_RX
, dev
, "Rx Stat FIFO Used 0x%02x Data FIFO Used 0x%04x Stat FIFO 0x%08x\n",
1151 (SMC_GET_RX_FIFO_INF(lp
) & 0x00ff0000) >> 16,
1152 SMC_GET_RX_FIFO_INF(lp
) & 0xffff,
1153 SMC_GET_RX_STS_FIFO_PEEK(lp
));
1154 SMC_SET_GPT_CFG(lp
, GPT_CFG_TIMER_EN_
| 10000);
1155 SMC_ACK_INT(lp
, INT_STS_GPT_INT_
);
1159 /* Handle PHY interrupt condition */
1160 if (status
& INT_STS_PHY_INT_
) {
1161 DBG(SMC_DEBUG_MISC
, dev
, "PHY irq\n");
1162 smc911x_phy_interrupt(dev
);
1163 SMC_ACK_INT(lp
, INT_STS_PHY_INT_
);
1165 } while (--timeout
);
1167 /* restore mask state */
1168 SMC_SET_INT_EN(lp
, mask
);
1170 DBG(SMC_DEBUG_MISC
, dev
, "Interrupt done (%d loops)\n",
1173 spin_unlock_irqrestore(&lp
->lock
, flags
);
1180 smc911x_tx_dma_irq(void *data
)
1182 struct smc911x_local
*lp
= data
;
1183 struct net_device
*dev
= lp
->netdev
;
1184 struct sk_buff
*skb
= lp
->current_tx_skb
;
1185 unsigned long flags
;
1187 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1189 DBG(SMC_DEBUG_TX
| SMC_DEBUG_DMA
, dev
, "TX DMA irq handler\n");
1190 BUG_ON(skb
== NULL
);
1191 dma_unmap_single(lp
->dev
, tx_dmabuf
, tx_dmalen
, DMA_TO_DEVICE
);
1192 netif_trans_update(dev
);
1193 dev_kfree_skb_irq(skb
);
1194 lp
->current_tx_skb
= NULL
;
1195 if (lp
->pending_tx_skb
!= NULL
)
1196 smc911x_hardware_send_pkt(dev
);
1198 DBG(SMC_DEBUG_TX
| SMC_DEBUG_DMA
, dev
,
1199 "No pending Tx packets. DMA disabled\n");
1200 spin_lock_irqsave(&lp
->lock
, flags
);
1201 lp
->txdma_active
= 0;
1202 if (!lp
->tx_throttle
) {
1203 netif_wake_queue(dev
);
1205 spin_unlock_irqrestore(&lp
->lock
, flags
);
1208 DBG(SMC_DEBUG_TX
| SMC_DEBUG_DMA
, dev
,
1209 "TX DMA irq completed\n");
1212 smc911x_rx_dma_irq(void *data
)
1214 struct smc911x_local
*lp
= data
;
1215 struct net_device
*dev
= lp
->netdev
;
1216 struct sk_buff
*skb
= lp
->current_rx_skb
;
1217 unsigned long flags
;
1220 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1221 DBG(SMC_DEBUG_RX
| SMC_DEBUG_DMA
, dev
, "RX DMA irq handler\n");
1222 dma_unmap_single(lp
->dev
, rx_dmabuf
, rx_dmalen
, DMA_FROM_DEVICE
);
1223 BUG_ON(skb
== NULL
);
1224 lp
->current_rx_skb
= NULL
;
1225 PRINT_PKT(skb
->data
, skb
->len
);
1226 skb
->protocol
= eth_type_trans(skb
, dev
);
1227 dev
->stats
.rx_packets
++;
1228 dev
->stats
.rx_bytes
+= skb
->len
;
1231 spin_lock_irqsave(&lp
->lock
, flags
);
1232 pkts
= (SMC_GET_RX_FIFO_INF(lp
) & RX_FIFO_INF_RXSUSED_
) >> 16;
1236 lp
->rxdma_active
= 0;
1238 spin_unlock_irqrestore(&lp
->lock
, flags
);
1239 DBG(SMC_DEBUG_RX
| SMC_DEBUG_DMA
, dev
,
1240 "RX DMA irq completed. DMA RX FIFO PKTS %d\n",
1243 #endif /* SMC_USE_DMA */
1245 #ifdef CONFIG_NET_POLL_CONTROLLER
1247 * Polling receive - used by netconsole and other diagnostic tools
1248 * to allow network i/o with interrupts disabled.
1250 static void smc911x_poll_controller(struct net_device
*dev
)
1252 disable_irq(dev
->irq
);
1253 smc911x_interrupt(dev
->irq
, dev
);
1254 enable_irq(dev
->irq
);
1258 /* Our watchdog timed out. Called by the networking layer */
1259 static void smc911x_timeout(struct net_device
*dev
)
1261 struct smc911x_local
*lp
= netdev_priv(dev
);
1263 unsigned long flags
;
1265 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1267 spin_lock_irqsave(&lp
->lock
, flags
);
1268 status
= SMC_GET_INT(lp
);
1269 mask
= SMC_GET_INT_EN(lp
);
1270 spin_unlock_irqrestore(&lp
->lock
, flags
);
1271 DBG(SMC_DEBUG_MISC
, dev
, "INT 0x%02x MASK 0x%02x\n",
1274 /* Dump the current TX FIFO contents and restart */
1275 mask
= SMC_GET_TX_CFG(lp
);
1276 SMC_SET_TX_CFG(lp
, mask
| TX_CFG_TXS_DUMP_
| TX_CFG_TXD_DUMP_
);
1278 * Reconfiguring the PHY doesn't seem like a bad idea here, but
1279 * smc911x_phy_configure() calls msleep() which calls schedule_timeout()
1280 * which calls schedule(). Hence we use a work queue.
1282 if (lp
->phy_type
!= 0)
1283 schedule_work(&lp
->phy_configure
);
1285 /* We can accept TX packets again */
1286 netif_trans_update(dev
); /* prevent tx timeout */
1287 netif_wake_queue(dev
);
1291 * This routine will, depending on the values passed to it,
1292 * either make it accept multicast packets, go into
1293 * promiscuous mode (for TCPDUMP and cousins) or accept
1294 * a select set of multicast packets
1296 static void smc911x_set_multicast_list(struct net_device
*dev
)
1298 struct smc911x_local
*lp
= netdev_priv(dev
);
1299 unsigned int multicast_table
[2];
1300 unsigned int mcr
, update_multicast
= 0;
1301 unsigned long flags
;
1303 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1305 spin_lock_irqsave(&lp
->lock
, flags
);
1306 SMC_GET_MAC_CR(lp
, mcr
);
1307 spin_unlock_irqrestore(&lp
->lock
, flags
);
1309 if (dev
->flags
& IFF_PROMISC
) {
1311 DBG(SMC_DEBUG_MISC
, dev
, "RCR_PRMS\n");
1312 mcr
|= MAC_CR_PRMS_
;
1315 * Here, I am setting this to accept all multicast packets.
1316 * I don't need to zero the multicast table, because the flag is
1317 * checked before the table is
1319 else if (dev
->flags
& IFF_ALLMULTI
|| netdev_mc_count(dev
) > 16) {
1320 DBG(SMC_DEBUG_MISC
, dev
, "RCR_ALMUL\n");
1321 mcr
|= MAC_CR_MCPAS_
;
1325 * This sets the internal hardware table to filter out unwanted
1326 * multicast packets before they take up memory.
1328 * The SMC chip uses a hash table where the high 6 bits of the CRC of
1329 * address are the offset into the table. If that bit is 1, then the
1330 * multicast packet is accepted. Otherwise, it's dropped silently.
1332 * To use the 6 bits as an offset into the table, the high 1 bit is
1333 * the number of the 32 bit register, while the low 5 bits are the bit
1334 * within that register.
1336 else if (!netdev_mc_empty(dev
)) {
1337 struct netdev_hw_addr
*ha
;
1339 /* Set the Hash perfec mode */
1340 mcr
|= MAC_CR_HPFILT_
;
1342 /* start with a table of all zeros: reject all */
1343 memset(multicast_table
, 0, sizeof(multicast_table
));
1345 netdev_for_each_mc_addr(ha
, dev
) {
1348 /* upper 6 bits are used as hash index */
1349 position
= ether_crc(ETH_ALEN
, ha
->addr
)>>26;
1351 multicast_table
[position
>>5] |= 1 << (position
&0x1f);
1354 /* be sure I get rid of flags I might have set */
1355 mcr
&= ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
1357 /* now, the table can be loaded into the chipset */
1358 update_multicast
= 1;
1360 DBG(SMC_DEBUG_MISC
, dev
, "~(MAC_CR_PRMS_|MAC_CR_MCPAS_)\n");
1361 mcr
&= ~(MAC_CR_PRMS_
| MAC_CR_MCPAS_
);
1364 * since I'm disabling all multicast entirely, I need to
1365 * clear the multicast list
1367 memset(multicast_table
, 0, sizeof(multicast_table
));
1368 update_multicast
= 1;
1371 spin_lock_irqsave(&lp
->lock
, flags
);
1372 SMC_SET_MAC_CR(lp
, mcr
);
1373 if (update_multicast
) {
1374 DBG(SMC_DEBUG_MISC
, dev
,
1375 "update mcast hash table 0x%08x 0x%08x\n",
1376 multicast_table
[0], multicast_table
[1]);
1377 SMC_SET_HASHL(lp
, multicast_table
[0]);
1378 SMC_SET_HASHH(lp
, multicast_table
[1]);
1380 spin_unlock_irqrestore(&lp
->lock
, flags
);
1385 * Open and Initialize the board
1387 * Set up everything, reset the card, etc..
1390 smc911x_open(struct net_device
*dev
)
1392 struct smc911x_local
*lp
= netdev_priv(dev
);
1394 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1396 /* reset the hardware */
1399 /* Configure the PHY, initialize the link state */
1400 smc911x_phy_configure(&lp
->phy_configure
);
1402 /* Turn on Tx + Rx */
1403 smc911x_enable(dev
);
1405 netif_start_queue(dev
);
1413 * this makes the board clean up everything that it can
1414 * and not talk to the outside world. Caused by
1415 * an 'ifconfig ethX down'
1417 static int smc911x_close(struct net_device
*dev
)
1419 struct smc911x_local
*lp
= netdev_priv(dev
);
1421 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1423 netif_stop_queue(dev
);
1424 netif_carrier_off(dev
);
1426 /* clear everything */
1427 smc911x_shutdown(dev
);
1429 if (lp
->phy_type
!= 0) {
1430 /* We need to ensure that no calls to
1431 * smc911x_phy_configure are pending.
1433 cancel_work_sync(&lp
->phy_configure
);
1434 smc911x_phy_powerdown(dev
, lp
->mii
.phy_id
);
1437 if (lp
->pending_tx_skb
) {
1438 dev_kfree_skb(lp
->pending_tx_skb
);
1439 lp
->pending_tx_skb
= NULL
;
1449 smc911x_ethtool_get_link_ksettings(struct net_device
*dev
,
1450 struct ethtool_link_ksettings
*cmd
)
1452 struct smc911x_local
*lp
= netdev_priv(dev
);
1454 unsigned long flags
;
1457 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1459 if (lp
->phy_type
!= 0) {
1460 spin_lock_irqsave(&lp
->lock
, flags
);
1461 mii_ethtool_get_link_ksettings(&lp
->mii
, cmd
);
1462 spin_unlock_irqrestore(&lp
->lock
, flags
);
1464 supported
= SUPPORTED_10baseT_Half
|
1465 SUPPORTED_10baseT_Full
|
1466 SUPPORTED_TP
| SUPPORTED_AUI
;
1468 if (lp
->ctl_rspeed
== 10)
1469 cmd
->base
.speed
= SPEED_10
;
1470 else if (lp
->ctl_rspeed
== 100)
1471 cmd
->base
.speed
= SPEED_100
;
1473 cmd
->base
.autoneg
= AUTONEG_DISABLE
;
1475 SMC_GET_PHY_SPECIAL(lp
, lp
->mii
.phy_id
, status
);
1477 (status
& (PHY_SPECIAL_SPD_10FULL_
| PHY_SPECIAL_SPD_100FULL_
)) ?
1478 DUPLEX_FULL
: DUPLEX_HALF
;
1480 ethtool_convert_legacy_u32_to_link_mode(
1481 cmd
->link_modes
.supported
, supported
);
1489 smc911x_ethtool_set_link_ksettings(struct net_device
*dev
,
1490 const struct ethtool_link_ksettings
*cmd
)
1492 struct smc911x_local
*lp
= netdev_priv(dev
);
1494 unsigned long flags
;
1496 if (lp
->phy_type
!= 0) {
1497 spin_lock_irqsave(&lp
->lock
, flags
);
1498 ret
= mii_ethtool_set_link_ksettings(&lp
->mii
, cmd
);
1499 spin_unlock_irqrestore(&lp
->lock
, flags
);
1501 if (cmd
->base
.autoneg
!= AUTONEG_DISABLE
||
1502 cmd
->base
.speed
!= SPEED_10
||
1503 (cmd
->base
.duplex
!= DUPLEX_HALF
&&
1504 cmd
->base
.duplex
!= DUPLEX_FULL
) ||
1505 (cmd
->base
.port
!= PORT_TP
&&
1506 cmd
->base
.port
!= PORT_AUI
))
1509 lp
->ctl_rfduplx
= cmd
->base
.duplex
== DUPLEX_FULL
;
1518 smc911x_ethtool_getdrvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
1520 strlcpy(info
->driver
, CARDNAME
, sizeof(info
->driver
));
1521 strlcpy(info
->version
, version
, sizeof(info
->version
));
1522 strlcpy(info
->bus_info
, dev_name(dev
->dev
.parent
),
1523 sizeof(info
->bus_info
));
1526 static int smc911x_ethtool_nwayreset(struct net_device
*dev
)
1528 struct smc911x_local
*lp
= netdev_priv(dev
);
1530 unsigned long flags
;
1532 if (lp
->phy_type
!= 0) {
1533 spin_lock_irqsave(&lp
->lock
, flags
);
1534 ret
= mii_nway_restart(&lp
->mii
);
1535 spin_unlock_irqrestore(&lp
->lock
, flags
);
1541 static u32
smc911x_ethtool_getmsglevel(struct net_device
*dev
)
1543 struct smc911x_local
*lp
= netdev_priv(dev
);
1544 return lp
->msg_enable
;
1547 static void smc911x_ethtool_setmsglevel(struct net_device
*dev
, u32 level
)
1549 struct smc911x_local
*lp
= netdev_priv(dev
);
1550 lp
->msg_enable
= level
;
1553 static int smc911x_ethtool_getregslen(struct net_device
*dev
)
1555 /* System regs + MAC regs + PHY regs */
1556 return (((E2P_CMD
- ID_REV
)/4 + 1) +
1557 (WUCSR
- MAC_CR
)+1 + 32) * sizeof(u32
);
1560 static void smc911x_ethtool_getregs(struct net_device
*dev
,
1561 struct ethtool_regs
* regs
, void *buf
)
1563 struct smc911x_local
*lp
= netdev_priv(dev
);
1564 unsigned long flags
;
1566 u32
*data
= (u32
*)buf
;
1568 regs
->version
= lp
->version
;
1569 for(i
=ID_REV
;i
<=E2P_CMD
;i
+=4) {
1570 data
[j
++] = SMC_inl(lp
, i
);
1572 for(i
=MAC_CR
;i
<=WUCSR
;i
++) {
1573 spin_lock_irqsave(&lp
->lock
, flags
);
1574 SMC_GET_MAC_CSR(lp
, i
, reg
);
1575 spin_unlock_irqrestore(&lp
->lock
, flags
);
1578 for(i
=0;i
<=31;i
++) {
1579 spin_lock_irqsave(&lp
->lock
, flags
);
1580 SMC_GET_MII(lp
, i
, lp
->mii
.phy_id
, reg
);
1581 spin_unlock_irqrestore(&lp
->lock
, flags
);
1582 data
[j
++] = reg
& 0xFFFF;
1586 static int smc911x_ethtool_wait_eeprom_ready(struct net_device
*dev
)
1588 struct smc911x_local
*lp
= netdev_priv(dev
);
1589 unsigned int timeout
;
1592 e2p_cmd
= SMC_GET_E2P_CMD(lp
);
1593 for(timeout
=10;(e2p_cmd
& E2P_CMD_EPC_BUSY_
) && timeout
; timeout
--) {
1594 if (e2p_cmd
& E2P_CMD_EPC_TIMEOUT_
) {
1595 PRINTK(dev
, "%s timeout waiting for EEPROM to respond\n",
1600 e2p_cmd
= SMC_GET_E2P_CMD(lp
);
1603 PRINTK(dev
, "%s timeout waiting for EEPROM CMD not busy\n",
1610 static inline int smc911x_ethtool_write_eeprom_cmd(struct net_device
*dev
,
1613 struct smc911x_local
*lp
= netdev_priv(dev
);
1616 if ((ret
= smc911x_ethtool_wait_eeprom_ready(dev
))!=0)
1618 SMC_SET_E2P_CMD(lp
, E2P_CMD_EPC_BUSY_
|
1619 ((cmd
) & (0x7<<28)) |
1624 static inline int smc911x_ethtool_read_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 *data
= SMC_GET_E2P_DATA(lp
);
1636 static inline int smc911x_ethtool_write_eeprom_byte(struct net_device
*dev
,
1639 struct smc911x_local
*lp
= netdev_priv(dev
);
1642 if ((ret
= smc911x_ethtool_wait_eeprom_ready(dev
))!=0)
1644 SMC_SET_E2P_DATA(lp
, data
);
1648 static int smc911x_ethtool_geteeprom(struct net_device
*dev
,
1649 struct ethtool_eeprom
*eeprom
, u8
*data
)
1651 u8 eebuf
[SMC911X_EEPROM_LEN
];
1654 for(i
=0;i
<SMC911X_EEPROM_LEN
;i
++) {
1655 if ((ret
=smc911x_ethtool_write_eeprom_cmd(dev
, E2P_CMD_EPC_CMD_READ_
, i
))!=0)
1657 if ((ret
=smc911x_ethtool_read_eeprom_byte(dev
, &eebuf
[i
]))!=0)
1660 memcpy(data
, eebuf
+eeprom
->offset
, eeprom
->len
);
1664 static int smc911x_ethtool_seteeprom(struct net_device
*dev
,
1665 struct ethtool_eeprom
*eeprom
, u8
*data
)
1670 if ((ret
=smc911x_ethtool_write_eeprom_cmd(dev
, E2P_CMD_EPC_CMD_EWEN_
, 0 ))!=0)
1672 for(i
=eeprom
->offset
;i
<(eeprom
->offset
+eeprom
->len
);i
++) {
1674 if ((ret
=smc911x_ethtool_write_eeprom_cmd(dev
, E2P_CMD_EPC_CMD_ERASE_
, i
))!=0)
1677 if ((ret
=smc911x_ethtool_write_eeprom_byte(dev
, *data
))!=0)
1679 if ((ret
=smc911x_ethtool_write_eeprom_cmd(dev
, E2P_CMD_EPC_CMD_WRITE_
, i
))!=0)
1685 static int smc911x_ethtool_geteeprom_len(struct net_device
*dev
)
1687 return SMC911X_EEPROM_LEN
;
1690 static const struct ethtool_ops smc911x_ethtool_ops
= {
1691 .get_drvinfo
= smc911x_ethtool_getdrvinfo
,
1692 .get_msglevel
= smc911x_ethtool_getmsglevel
,
1693 .set_msglevel
= smc911x_ethtool_setmsglevel
,
1694 .nway_reset
= smc911x_ethtool_nwayreset
,
1695 .get_link
= ethtool_op_get_link
,
1696 .get_regs_len
= smc911x_ethtool_getregslen
,
1697 .get_regs
= smc911x_ethtool_getregs
,
1698 .get_eeprom_len
= smc911x_ethtool_geteeprom_len
,
1699 .get_eeprom
= smc911x_ethtool_geteeprom
,
1700 .set_eeprom
= smc911x_ethtool_seteeprom
,
1701 .get_link_ksettings
= smc911x_ethtool_get_link_ksettings
,
1702 .set_link_ksettings
= smc911x_ethtool_set_link_ksettings
,
1708 * This routine has a simple purpose -- make the SMC chip generate an
1709 * interrupt, so an auto-detect routine can detect it, and find the IRQ,
1711 static int smc911x_findirq(struct net_device
*dev
)
1713 struct smc911x_local
*lp
= netdev_priv(dev
);
1715 unsigned long cookie
;
1717 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1719 cookie
= probe_irq_on();
1722 * Force a SW interrupt
1725 SMC_SET_INT_EN(lp
, INT_EN_SW_INT_EN_
);
1728 * Wait until positive that the interrupt has been generated
1733 int_status
= SMC_GET_INT_EN(lp
);
1734 if (int_status
& INT_EN_SW_INT_EN_
)
1735 break; /* got the interrupt */
1736 } while (--timeout
);
1739 * there is really nothing that I can do here if timeout fails,
1740 * as autoirq_report will return a 0 anyway, which is what I
1741 * want in this case. Plus, the clean up is needed in both
1745 /* and disable all interrupts again */
1746 SMC_SET_INT_EN(lp
, 0);
1748 /* and return what I found */
1749 return probe_irq_off(cookie
);
1752 static const struct net_device_ops smc911x_netdev_ops
= {
1753 .ndo_open
= smc911x_open
,
1754 .ndo_stop
= smc911x_close
,
1755 .ndo_start_xmit
= smc911x_hard_start_xmit
,
1756 .ndo_tx_timeout
= smc911x_timeout
,
1757 .ndo_set_rx_mode
= smc911x_set_multicast_list
,
1758 .ndo_validate_addr
= eth_validate_addr
,
1759 .ndo_set_mac_address
= eth_mac_addr
,
1760 #ifdef CONFIG_NET_POLL_CONTROLLER
1761 .ndo_poll_controller
= smc911x_poll_controller
,
1766 * Function: smc911x_probe(unsigned long ioaddr)
1769 * Tests to see if a given ioaddr points to an SMC911x chip.
1770 * Returns a 0 on success
1773 * (1) see if the endian word is OK
1774 * (1) see if I recognize the chip ID in the appropriate register
1776 * Here I do typical initialization tasks.
1778 * o Initialize the structure if needed
1779 * o print out my vanity message if not done so already
1780 * o print out what type of hardware is detected
1781 * o print out the ethernet address
1783 * o set up my private data
1784 * o configure the dev structure with my subroutines
1785 * o actually GRAB the irq.
1788 static int smc911x_probe(struct net_device
*dev
)
1790 struct smc911x_local
*lp
= netdev_priv(dev
);
1792 unsigned int val
, chip_id
, revision
;
1793 const char *version_string
;
1794 unsigned long irq_flags
;
1796 struct dma_slave_config config
;
1797 dma_cap_mask_t mask
;
1800 DBG(SMC_DEBUG_FUNC
, dev
, "--> %s\n", __func__
);
1802 /* First, see if the endian word is recognized */
1803 val
= SMC_GET_BYTE_TEST(lp
);
1804 DBG(SMC_DEBUG_MISC
, dev
, "%s: endian probe returned 0x%04x\n",
1806 if (val
!= 0x87654321) {
1807 netdev_err(dev
, "Invalid chip endian 0x%08x\n", val
);
1813 * check if the revision register is something that I
1814 * recognize. These might need to be added to later,
1815 * as future revisions could be added.
1817 chip_id
= SMC_GET_PN(lp
);
1818 DBG(SMC_DEBUG_MISC
, dev
, "%s: id probe returned 0x%04x\n",
1820 for(i
=0;chip_ids
[i
].id
!= 0; i
++) {
1821 if (chip_ids
[i
].id
== chip_id
) break;
1823 if (!chip_ids
[i
].id
) {
1824 netdev_err(dev
, "Unknown chip ID %04x\n", chip_id
);
1828 version_string
= chip_ids
[i
].name
;
1830 revision
= SMC_GET_REV(lp
);
1831 DBG(SMC_DEBUG_MISC
, dev
, "%s: revision = 0x%04x\n", CARDNAME
, revision
);
1833 /* At this point I'll assume that the chip is an SMC911x. */
1834 DBG(SMC_DEBUG_MISC
, dev
, "%s: Found a %s\n",
1835 CARDNAME
, chip_ids
[i
].name
);
1837 /* Validate the TX FIFO size requested */
1838 if ((tx_fifo_kb
< 2) || (tx_fifo_kb
> 14)) {
1839 netdev_err(dev
, "Invalid TX FIFO size requested %d\n",
1845 /* fill in some of the fields */
1846 lp
->version
= chip_ids
[i
].id
;
1847 lp
->revision
= revision
;
1848 lp
->tx_fifo_kb
= tx_fifo_kb
;
1849 /* Reverse calculate the RX FIFO size from the TX */
1850 lp
->tx_fifo_size
=(lp
->tx_fifo_kb
<<10) - 512;
1851 lp
->rx_fifo_size
= ((0x4000 - 512 - lp
->tx_fifo_size
) / 16) * 15;
1853 /* Set the automatic flow control values */
1854 switch(lp
->tx_fifo_kb
) {
1856 * AFC_HI is about ((Rx Data Fifo Size)*2/3)/64
1857 * AFC_LO is AFC_HI/2
1858 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1860 case 2:/* 13440 Rx Data Fifo Size */
1861 lp
->afc_cfg
=0x008C46AF;break;
1862 case 3:/* 12480 Rx Data Fifo Size */
1863 lp
->afc_cfg
=0x0082419F;break;
1864 case 4:/* 11520 Rx Data Fifo Size */
1865 lp
->afc_cfg
=0x00783C9F;break;
1866 case 5:/* 10560 Rx Data Fifo Size */
1867 lp
->afc_cfg
=0x006E374F;break;
1868 case 6:/* 9600 Rx Data Fifo Size */
1869 lp
->afc_cfg
=0x0064328F;break;
1870 case 7:/* 8640 Rx Data Fifo Size */
1871 lp
->afc_cfg
=0x005A2D7F;break;
1872 case 8:/* 7680 Rx Data Fifo Size */
1873 lp
->afc_cfg
=0x0050287F;break;
1874 case 9:/* 6720 Rx Data Fifo Size */
1875 lp
->afc_cfg
=0x0046236F;break;
1876 case 10:/* 5760 Rx Data Fifo Size */
1877 lp
->afc_cfg
=0x003C1E6F;break;
1878 case 11:/* 4800 Rx Data Fifo Size */
1879 lp
->afc_cfg
=0x0032195F;break;
1881 * AFC_HI is ~1520 bytes less than RX Data Fifo Size
1882 * AFC_LO is AFC_HI/2
1883 * BACK_DUR is about 5uS*(AFC_LO) rounded down
1885 case 12:/* 3840 Rx Data Fifo Size */
1886 lp
->afc_cfg
=0x0024124F;break;
1887 case 13:/* 2880 Rx Data Fifo Size */
1888 lp
->afc_cfg
=0x0015073F;break;
1889 case 14:/* 1920 Rx Data Fifo Size */
1890 lp
->afc_cfg
=0x0006032F;break;
1892 PRINTK(dev
, "ERROR -- no AFC_CFG setting found");
1896 DBG(SMC_DEBUG_MISC
| SMC_DEBUG_TX
| SMC_DEBUG_RX
, dev
,
1897 "%s: tx_fifo %d rx_fifo %d afc_cfg 0x%08x\n", CARDNAME
,
1898 lp
->tx_fifo_size
, lp
->rx_fifo_size
, lp
->afc_cfg
);
1900 spin_lock_init(&lp
->lock
);
1902 /* Get the MAC address */
1903 SMC_GET_MAC_ADDR(lp
, dev
->dev_addr
);
1905 /* now, reset the chip, and put it into a known state */
1909 * If dev->irq is 0, then the device has to be banged on to see
1912 * Specifying an IRQ is done with the assumption that the user knows
1913 * what (s)he is doing. No checking is done!!!!
1920 dev
->irq
= smc911x_findirq(dev
);
1923 /* kick the card and try again */
1927 if (dev
->irq
== 0) {
1928 netdev_warn(dev
, "Couldn't autodetect your IRQ. Use irq=xx.\n");
1932 dev
->irq
= irq_canonicalize(dev
->irq
);
1934 dev
->netdev_ops
= &smc911x_netdev_ops
;
1935 dev
->watchdog_timeo
= msecs_to_jiffies(watchdog
);
1936 dev
->ethtool_ops
= &smc911x_ethtool_ops
;
1938 INIT_WORK(&lp
->phy_configure
, smc911x_phy_configure
);
1939 lp
->mii
.phy_id_mask
= 0x1f;
1940 lp
->mii
.reg_num_mask
= 0x1f;
1941 lp
->mii
.force_media
= 0;
1942 lp
->mii
.full_duplex
= 0;
1944 lp
->mii
.mdio_read
= smc911x_phy_read
;
1945 lp
->mii
.mdio_write
= smc911x_phy_write
;
1948 * Locate the phy, if any.
1950 smc911x_phy_detect(dev
);
1952 /* Set default parameters */
1953 lp
->msg_enable
= NETIF_MSG_LINK
;
1954 lp
->ctl_rfduplx
= 1;
1955 lp
->ctl_rspeed
= 100;
1957 #ifdef SMC_DYNAMIC_BUS_CONFIG
1958 irq_flags
= lp
->cfg
.irq_flags
;
1960 irq_flags
= IRQF_SHARED
| SMC_IRQ_SENSE
;
1964 retval
= request_irq(dev
->irq
, smc911x_interrupt
,
1965 irq_flags
, dev
->name
, dev
);
1972 dma_cap_set(DMA_SLAVE
, mask
);
1973 lp
->rxdma
= dma_request_channel(mask
, NULL
, NULL
);
1974 lp
->txdma
= dma_request_channel(mask
, NULL
, NULL
);
1975 lp
->rxdma_active
= 0;
1976 lp
->txdma_active
= 0;
1978 memset(&config
, 0, sizeof(config
));
1979 config
.src_addr_width
= DMA_SLAVE_BUSWIDTH_4_BYTES
;
1980 config
.dst_addr_width
= DMA_SLAVE_BUSWIDTH_4_BYTES
;
1981 config
.src_addr
= lp
->physaddr
+ RX_DATA_FIFO
;
1982 config
.dst_addr
= lp
->physaddr
+ TX_DATA_FIFO
;
1983 config
.src_maxburst
= 32;
1984 config
.dst_maxburst
= 32;
1985 retval
= dmaengine_slave_config(lp
->rxdma
, &config
);
1987 dev_err(lp
->dev
, "dma rx channel configuration failed: %d\n",
1991 retval
= dmaengine_slave_config(lp
->txdma
, &config
);
1993 dev_err(lp
->dev
, "dma tx channel configuration failed: %d\n",
1999 retval
= register_netdev(dev
);
2001 /* now, print out the card info, in a short format.. */
2002 netdev_info(dev
, "%s (rev %d) at %#lx IRQ %d",
2003 version_string
, lp
->revision
,
2004 dev
->base_addr
, dev
->irq
);
2008 pr_cont(" RXDMA %p", lp
->rxdma
);
2011 pr_cont(" TXDMA %p", lp
->txdma
);
2014 if (!is_valid_ether_addr(dev
->dev_addr
)) {
2015 netdev_warn(dev
, "Invalid ethernet MAC address. Please set using ifconfig\n");
2017 /* Print the Ethernet address */
2018 netdev_info(dev
, "Ethernet addr: %pM\n",
2022 if (lp
->phy_type
== 0) {
2023 PRINTK(dev
, "No PHY found\n");
2024 } else if ((lp
->phy_type
& ~0xff) == LAN911X_INTERNAL_PHY_ID
) {
2025 PRINTK(dev
, "LAN911x Internal PHY\n");
2027 PRINTK(dev
, "External PHY 0x%08x\n", lp
->phy_type
);
2035 dma_release_channel(lp
->rxdma
);
2037 dma_release_channel(lp
->txdma
);
2044 * smc911x_drv_probe(void)
2047 * 0 --> there is a device
2048 * anything else, error
2050 static int smc911x_drv_probe(struct platform_device
*pdev
)
2052 struct net_device
*ndev
;
2053 struct resource
*res
;
2054 struct smc911x_local
*lp
;
2058 /* ndev is not valid yet, so avoid passing it in. */
2059 DBG(SMC_DEBUG_FUNC
, "--> %s\n", __func__
);
2060 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2067 * Request the regions.
2069 if (!request_mem_region(res
->start
, SMC911X_IO_EXTENT
, CARDNAME
)) {
2074 ndev
= alloc_etherdev(sizeof(struct smc911x_local
));
2079 SET_NETDEV_DEV(ndev
, &pdev
->dev
);
2081 ndev
->dma
= (unsigned char)-1;
2082 ndev
->irq
= platform_get_irq(pdev
, 0);
2083 lp
= netdev_priv(ndev
);
2085 #ifdef SMC_DYNAMIC_BUS_CONFIG
2087 struct smc911x_platdata
*pd
= dev_get_platdata(&pdev
->dev
);
2092 memcpy(&lp
->cfg
, pd
, sizeof(lp
->cfg
));
2096 addr
= ioremap(res
->start
, SMC911X_IO_EXTENT
);
2102 platform_set_drvdata(pdev
, ndev
);
2104 ndev
->base_addr
= res
->start
;
2105 ret
= smc911x_probe(ndev
);
2111 release_mem_region(res
->start
, SMC911X_IO_EXTENT
);
2113 pr_info("%s: not found (%d).\n", CARDNAME
, ret
);
2117 lp
->physaddr
= res
->start
;
2118 lp
->dev
= &pdev
->dev
;
2125 static int smc911x_drv_remove(struct platform_device
*pdev
)
2127 struct net_device
*ndev
= platform_get_drvdata(pdev
);
2128 struct smc911x_local
*lp
= netdev_priv(ndev
);
2129 struct resource
*res
;
2131 DBG(SMC_DEBUG_FUNC
, ndev
, "--> %s\n", __func__
);
2133 unregister_netdev(ndev
);
2135 free_irq(ndev
->irq
, ndev
);
2140 dma_release_channel(lp
->rxdma
);
2142 dma_release_channel(lp
->txdma
);
2146 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2147 release_mem_region(res
->start
, SMC911X_IO_EXTENT
);
2153 static int smc911x_drv_suspend(struct platform_device
*dev
, pm_message_t state
)
2155 struct net_device
*ndev
= platform_get_drvdata(dev
);
2156 struct smc911x_local
*lp
= netdev_priv(ndev
);
2158 DBG(SMC_DEBUG_FUNC
, ndev
, "--> %s\n", __func__
);
2160 if (netif_running(ndev
)) {
2161 netif_device_detach(ndev
);
2162 smc911x_shutdown(ndev
);
2164 /* Set D2 - Energy detect only setting */
2165 SMC_SET_PMT_CTRL(lp
, 2<<12);
2172 static int smc911x_drv_resume(struct platform_device
*dev
)
2174 struct net_device
*ndev
= platform_get_drvdata(dev
);
2176 DBG(SMC_DEBUG_FUNC
, ndev
, "--> %s\n", __func__
);
2178 struct smc911x_local
*lp
= netdev_priv(ndev
);
2180 if (netif_running(ndev
)) {
2181 smc911x_reset(ndev
);
2182 if (lp
->phy_type
!= 0)
2183 smc911x_phy_configure(&lp
->phy_configure
);
2184 smc911x_enable(ndev
);
2185 netif_device_attach(ndev
);
2191 static struct platform_driver smc911x_driver
= {
2192 .probe
= smc911x_drv_probe
,
2193 .remove
= smc911x_drv_remove
,
2194 .suspend
= smc911x_drv_suspend
,
2195 .resume
= smc911x_drv_resume
,
2201 module_platform_driver(smc911x_driver
);