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1
2/* Advanced Micro Devices Inc. AMD8111E Linux Network Driver
3 * Copyright (C) 2004 Advanced Micro Devices
4 *
5 *
6 * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ]
7 * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c]
8 * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ]
9 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
10 * Copyright 1993 United States Government as represented by the
11 * Director, National Security Agency.[ pcnet32.c ]
12 * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ]
13 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
14 *
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, see <http://www.gnu.org/licenses/>.
28
29Module Name:
30
31 amd8111e.c
32
33Abstract:
34
35 AMD8111 based 10/100 Ethernet Controller Driver.
36
37Environment:
38
39 Kernel Mode
40
41Revision History:
42 3.0.0
43 Initial Revision.
44 3.0.1
45 1. Dynamic interrupt coalescing.
46 2. Removed prev_stats.
47 3. MII support.
48 4. Dynamic IPG support
49 3.0.2 05/29/2003
50 1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
51 2. Bug fix: Fixed VLAN support failure.
52 3. Bug fix: Fixed receive interrupt coalescing bug.
53 4. Dynamic IPG support is disabled by default.
54 3.0.3 06/05/2003
55 1. Bug fix: Fixed failure to close the interface if SMP is enabled.
56 3.0.4 12/09/2003
57 1. Added set_mac_address routine for bonding driver support.
58 2. Tested the driver for bonding support
59 3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth
60 indicated to the h/w.
61 4. Modified amd8111e_rx() routine to receive all the received packets
62 in the first interrupt.
63 5. Bug fix: Corrected rx_errors reported in get_stats() function.
64 3.0.5 03/22/2004
65 1. Added NAPI support
66
67*/
68
69
70#include <linux/module.h>
71#include <linux/kernel.h>
72#include <linux/types.h>
73#include <linux/compiler.h>
74#include <linux/delay.h>
75#include <linux/interrupt.h>
76#include <linux/ioport.h>
77#include <linux/pci.h>
78#include <linux/netdevice.h>
79#include <linux/etherdevice.h>
80#include <linux/skbuff.h>
81#include <linux/ethtool.h>
82#include <linux/mii.h>
83#include <linux/if_vlan.h>
84#include <linux/ctype.h>
85#include <linux/crc32.h>
86#include <linux/dma-mapping.h>
87
88#include <asm/io.h>
89#include <asm/byteorder.h>
90#include <linux/uaccess.h>
91
92#if IS_ENABLED(CONFIG_VLAN_8021Q)
93#define AMD8111E_VLAN_TAG_USED 1
94#else
95#define AMD8111E_VLAN_TAG_USED 0
96#endif
97
98#include "amd8111e.h"
99#define MODULE_NAME "amd8111e"
100#define MODULE_VERS "3.0.7"
101MODULE_AUTHOR("Advanced Micro Devices, Inc.");
102MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS);
103MODULE_LICENSE("GPL");
104module_param_array(speed_duplex, int, NULL, 0);
105MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotiate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex");
106module_param_array(coalesce, bool, NULL, 0);
107MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
108module_param_array(dynamic_ipg, bool, NULL, 0);
109MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
110
111/* This function will read the PHY registers. */
112static int amd8111e_read_phy(struct amd8111e_priv *lp,
113 int phy_id, int reg, u32 *val)
114{
115 void __iomem *mmio = lp->mmio;
116 unsigned int reg_val;
117 unsigned int repeat= REPEAT_CNT;
118
119 reg_val = readl(mmio + PHY_ACCESS);
120 while (reg_val & PHY_CMD_ACTIVE)
121 reg_val = readl( mmio + PHY_ACCESS );
122
123 writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
124 ((reg & 0x1f) << 16), mmio +PHY_ACCESS);
125 do{
126 reg_val = readl(mmio + PHY_ACCESS);
127 udelay(30); /* It takes 30 us to read/write data */
128 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
129 if(reg_val & PHY_RD_ERR)
130 goto err_phy_read;
131
132 *val = reg_val & 0xffff;
133 return 0;
134err_phy_read:
135 *val = 0;
136 return -EINVAL;
137
138}
139
140/* This function will write into PHY registers. */
141static int amd8111e_write_phy(struct amd8111e_priv *lp,
142 int phy_id, int reg, u32 val)
143{
144 unsigned int repeat = REPEAT_CNT;
145 void __iomem *mmio = lp->mmio;
146 unsigned int reg_val;
147
148 reg_val = readl(mmio + PHY_ACCESS);
149 while (reg_val & PHY_CMD_ACTIVE)
150 reg_val = readl( mmio + PHY_ACCESS );
151
152 writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
153 ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
154
155 do{
156 reg_val = readl(mmio + PHY_ACCESS);
157 udelay(30); /* It takes 30 us to read/write the data */
158 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
159
160 if(reg_val & PHY_RD_ERR)
161 goto err_phy_write;
162
163 return 0;
164
165err_phy_write:
166 return -EINVAL;
167
168}
169
170/* This is the mii register read function provided to the mii interface. */
171static int amd8111e_mdio_read(struct net_device *dev, int phy_id, int reg_num)
172{
173 struct amd8111e_priv *lp = netdev_priv(dev);
174 unsigned int reg_val;
175
176 amd8111e_read_phy(lp,phy_id,reg_num,®_val);
177 return reg_val;
178
179}
180
181/* This is the mii register write function provided to the mii interface. */
182static void amd8111e_mdio_write(struct net_device *dev,
183 int phy_id, int reg_num, int val)
184{
185 struct amd8111e_priv *lp = netdev_priv(dev);
186
187 amd8111e_write_phy(lp, phy_id, reg_num, val);
188}
189
190/* This function will set PHY speed. During initialization sets
191 * the original speed to 100 full
192 */
193static void amd8111e_set_ext_phy(struct net_device *dev)
194{
195 struct amd8111e_priv *lp = netdev_priv(dev);
196 u32 bmcr,advert,tmp;
197
198 /* Determine mii register values to set the speed */
199 advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
200 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
201 switch (lp->ext_phy_option){
202
203 default:
204 case SPEED_AUTONEG: /* advertise all values */
205 tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
206 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
207 break;
208 case SPEED10_HALF:
209 tmp |= ADVERTISE_10HALF;
210 break;
211 case SPEED10_FULL:
212 tmp |= ADVERTISE_10FULL;
213 break;
214 case SPEED100_HALF:
215 tmp |= ADVERTISE_100HALF;
216 break;
217 case SPEED100_FULL:
218 tmp |= ADVERTISE_100FULL;
219 break;
220 }
221
222 if(advert != tmp)
223 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
224 /* Restart auto negotiation */
225 bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
226 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
227 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
228
229}
230
231/* This function will unmap skb->data space and will free
232 * all transmit and receive skbuffs.
233 */
234static int amd8111e_free_skbs(struct net_device *dev)
235{
236 struct amd8111e_priv *lp = netdev_priv(dev);
237 struct sk_buff *rx_skbuff;
238 int i;
239
240 /* Freeing transmit skbs */
241 for(i = 0; i < NUM_TX_BUFFERS; i++){
242 if(lp->tx_skbuff[i]){
243 pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i], lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE);
244 dev_kfree_skb (lp->tx_skbuff[i]);
245 lp->tx_skbuff[i] = NULL;
246 lp->tx_dma_addr[i] = 0;
247 }
248 }
249 /* Freeing previously allocated receive buffers */
250 for (i = 0; i < NUM_RX_BUFFERS; i++){
251 rx_skbuff = lp->rx_skbuff[i];
252 if(rx_skbuff != NULL){
253 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i],
254 lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE);
255 dev_kfree_skb(lp->rx_skbuff[i]);
256 lp->rx_skbuff[i] = NULL;
257 lp->rx_dma_addr[i] = 0;
258 }
259 }
260
261 return 0;
262}
263
264/* This will set the receive buffer length corresponding
265 * to the mtu size of networkinterface.
266 */
267static inline void amd8111e_set_rx_buff_len(struct net_device *dev)
268{
269 struct amd8111e_priv *lp = netdev_priv(dev);
270 unsigned int mtu = dev->mtu;
271
272 if (mtu > ETH_DATA_LEN){
273 /* MTU + ethernet header + FCS
274 * + optional VLAN tag + skb reserve space 2
275 */
276 lp->rx_buff_len = mtu + ETH_HLEN + 10;
277 lp->options |= OPTION_JUMBO_ENABLE;
278 } else{
279 lp->rx_buff_len = PKT_BUFF_SZ;
280 lp->options &= ~OPTION_JUMBO_ENABLE;
281 }
282}
283
284/* This function will free all the previously allocated buffers,
285 * determine new receive buffer length and will allocate new receive buffers.
286 * This function also allocates and initializes both the transmitter
287 * and receive hardware descriptors.
288 */
289static int amd8111e_init_ring(struct net_device *dev)
290{
291 struct amd8111e_priv *lp = netdev_priv(dev);
292 int i;
293
294 lp->rx_idx = lp->tx_idx = 0;
295 lp->tx_complete_idx = 0;
296 lp->tx_ring_idx = 0;
297
298
299 if(lp->opened)
300 /* Free previously allocated transmit and receive skbs */
301 amd8111e_free_skbs(dev);
302
303 else{
304 /* allocate the tx and rx descriptors */
305 if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
306 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
307 &lp->tx_ring_dma_addr)) == NULL)
308
309 goto err_no_mem;
310
311 if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
312 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
313 &lp->rx_ring_dma_addr)) == NULL)
314
315 goto err_free_tx_ring;
316
317 }
318 /* Set new receive buff size */
319 amd8111e_set_rx_buff_len(dev);
320
321 /* Allocating receive skbs */
322 for (i = 0; i < NUM_RX_BUFFERS; i++) {
323
324 lp->rx_skbuff[i] = netdev_alloc_skb(dev, lp->rx_buff_len);
325 if (!lp->rx_skbuff[i]) {
326 /* Release previos allocated skbs */
327 for(--i; i >= 0 ;i--)
328 dev_kfree_skb(lp->rx_skbuff[i]);
329 goto err_free_rx_ring;
330 }
331 skb_reserve(lp->rx_skbuff[i],2);
332 }
333 /* Initilaizing receive descriptors */
334 for (i = 0; i < NUM_RX_BUFFERS; i++) {
335 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev,
336 lp->rx_skbuff[i]->data,lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
337
338 lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
339 lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
340 wmb();
341 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
342 }
343
344 /* Initializing transmit descriptors */
345 for (i = 0; i < NUM_TX_RING_DR; i++) {
346 lp->tx_ring[i].buff_phy_addr = 0;
347 lp->tx_ring[i].tx_flags = 0;
348 lp->tx_ring[i].buff_count = 0;
349 }
350
351 return 0;
352
353err_free_rx_ring:
354
355 pci_free_consistent(lp->pci_dev,
356 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,lp->rx_ring,
357 lp->rx_ring_dma_addr);
358
359err_free_tx_ring:
360
361 pci_free_consistent(lp->pci_dev,
362 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,lp->tx_ring,
363 lp->tx_ring_dma_addr);
364
365err_no_mem:
366 return -ENOMEM;
367}
368
369/* This function will set the interrupt coalescing according
370 * to the input arguments
371 */
372static int amd8111e_set_coalesce(struct net_device *dev, enum coal_mode cmod)
373{
374 unsigned int timeout;
375 unsigned int event_count;
376
377 struct amd8111e_priv *lp = netdev_priv(dev);
378 void __iomem *mmio = lp->mmio;
379 struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
380
381
382 switch(cmod)
383 {
384 case RX_INTR_COAL :
385 timeout = coal_conf->rx_timeout;
386 event_count = coal_conf->rx_event_count;
387 if( timeout > MAX_TIMEOUT ||
388 event_count > MAX_EVENT_COUNT )
389 return -EINVAL;
390
391 timeout = timeout * DELAY_TIMER_CONV;
392 writel(VAL0|STINTEN, mmio+INTEN0);
393 writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout,
394 mmio+DLY_INT_A);
395 break;
396
397 case TX_INTR_COAL :
398 timeout = coal_conf->tx_timeout;
399 event_count = coal_conf->tx_event_count;
400 if( timeout > MAX_TIMEOUT ||
401 event_count > MAX_EVENT_COUNT )
402 return -EINVAL;
403
404
405 timeout = timeout * DELAY_TIMER_CONV;
406 writel(VAL0|STINTEN,mmio+INTEN0);
407 writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout,
408 mmio+DLY_INT_B);
409 break;
410
411 case DISABLE_COAL:
412 writel(0,mmio+STVAL);
413 writel(STINTEN, mmio+INTEN0);
414 writel(0, mmio +DLY_INT_B);
415 writel(0, mmio+DLY_INT_A);
416 break;
417 case ENABLE_COAL:
418 /* Start the timer */
419 writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /* 0.5 sec */
420 writel(VAL0|STINTEN, mmio+INTEN0);
421 break;
422 default:
423 break;
424
425 }
426 return 0;
427
428}
429
430/* This function initializes the device registers and starts the device. */
431static int amd8111e_restart(struct net_device *dev)
432{
433 struct amd8111e_priv *lp = netdev_priv(dev);
434 void __iomem *mmio = lp->mmio;
435 int i,reg_val;
436
437 /* stop the chip */
438 writel(RUN, mmio + CMD0);
439
440 if(amd8111e_init_ring(dev))
441 return -ENOMEM;
442
443 /* enable the port manager and set auto negotiation always */
444 writel((u32) VAL1|EN_PMGR, mmio + CMD3 );
445 writel((u32)XPHYANE|XPHYRST , mmio + CTRL2);
446
447 amd8111e_set_ext_phy(dev);
448
449 /* set control registers */
450 reg_val = readl(mmio + CTRL1);
451 reg_val &= ~XMTSP_MASK;
452 writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 );
453
454 /* enable interrupt */
455 writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
456 APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
457 SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
458
459 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
460
461 /* initialize tx and rx ring base addresses */
462 writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0);
463 writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0);
464
465 writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
466 writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
467
468 /* set default IPG to 96 */
469 writew((u32)DEFAULT_IPG,mmio+IPG);
470 writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
471
472 if(lp->options & OPTION_JUMBO_ENABLE){
473 writel((u32)VAL2|JUMBO, mmio + CMD3);
474 /* Reset REX_UFLO */
475 writel( REX_UFLO, mmio + CMD2);
476 /* Should not set REX_UFLO for jumbo frames */
477 writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2);
478 }else{
479 writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2);
480 writel((u32)JUMBO, mmio + CMD3);
481 }
482
483#if AMD8111E_VLAN_TAG_USED
484 writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3);
485#endif
486 writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 );
487
488 /* Setting the MAC address to the device */
489 for (i = 0; i < ETH_ALEN; i++)
490 writeb( dev->dev_addr[i], mmio + PADR + i );
491
492 /* Enable interrupt coalesce */
493 if(lp->options & OPTION_INTR_COAL_ENABLE){
494 netdev_info(dev, "Interrupt Coalescing Enabled.\n");
495 amd8111e_set_coalesce(dev,ENABLE_COAL);
496 }
497
498 /* set RUN bit to start the chip */
499 writel(VAL2 | RDMD0, mmio + CMD0);
500 writel(VAL0 | INTREN | RUN, mmio + CMD0);
501
502 /* To avoid PCI posting bug */
503 readl(mmio+CMD0);
504 return 0;
505}
506
507/* This function clears necessary the device registers. */
508static void amd8111e_init_hw_default(struct amd8111e_priv *lp)
509{
510 unsigned int reg_val;
511 unsigned int logic_filter[2] ={0,};
512 void __iomem *mmio = lp->mmio;
513
514
515 /* stop the chip */
516 writel(RUN, mmio + CMD0);
517
518 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
519 writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
520
521 /* Clear RCV_RING_BASE_ADDR */
522 writel(0, mmio + RCV_RING_BASE_ADDR0);
523
524 /* Clear XMT_RING_BASE_ADDR */
525 writel(0, mmio + XMT_RING_BASE_ADDR0);
526 writel(0, mmio + XMT_RING_BASE_ADDR1);
527 writel(0, mmio + XMT_RING_BASE_ADDR2);
528 writel(0, mmio + XMT_RING_BASE_ADDR3);
529
530 /* Clear CMD0 */
531 writel(CMD0_CLEAR,mmio + CMD0);
532
533 /* Clear CMD2 */
534 writel(CMD2_CLEAR, mmio +CMD2);
535
536 /* Clear CMD7 */
537 writel(CMD7_CLEAR , mmio + CMD7);
538
539 /* Clear DLY_INT_A and DLY_INT_B */
540 writel(0x0, mmio + DLY_INT_A);
541 writel(0x0, mmio + DLY_INT_B);
542
543 /* Clear FLOW_CONTROL */
544 writel(0x0, mmio + FLOW_CONTROL);
545
546 /* Clear INT0 write 1 to clear register */
547 reg_val = readl(mmio + INT0);
548 writel(reg_val, mmio + INT0);
549
550 /* Clear STVAL */
551 writel(0x0, mmio + STVAL);
552
553 /* Clear INTEN0 */
554 writel( INTEN0_CLEAR, mmio + INTEN0);
555
556 /* Clear LADRF */
557 writel(0x0 , mmio + LADRF);
558
559 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
560 writel( 0x80010,mmio + SRAM_SIZE);
561
562 /* Clear RCV_RING0_LEN */
563 writel(0x0, mmio + RCV_RING_LEN0);
564
565 /* Clear XMT_RING0/1/2/3_LEN */
566 writel(0x0, mmio + XMT_RING_LEN0);
567 writel(0x0, mmio + XMT_RING_LEN1);
568 writel(0x0, mmio + XMT_RING_LEN2);
569 writel(0x0, mmio + XMT_RING_LEN3);
570
571 /* Clear XMT_RING_LIMIT */
572 writel(0x0, mmio + XMT_RING_LIMIT);
573
574 /* Clear MIB */
575 writew(MIB_CLEAR, mmio + MIB_ADDR);
576
577 /* Clear LARF */
578 amd8111e_writeq(*(u64 *)logic_filter, mmio + LADRF);
579
580 /* SRAM_SIZE register */
581 reg_val = readl(mmio + SRAM_SIZE);
582
583 if(lp->options & OPTION_JUMBO_ENABLE)
584 writel( VAL2|JUMBO, mmio + CMD3);
585#if AMD8111E_VLAN_TAG_USED
586 writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 );
587#endif
588 /* Set default value to CTRL1 Register */
589 writel(CTRL1_DEFAULT, mmio + CTRL1);
590
591 /* To avoid PCI posting bug */
592 readl(mmio + CMD2);
593
594}
595
596/* This function disables the interrupt and clears all the pending
597 * interrupts in INT0
598 */
599static void amd8111e_disable_interrupt(struct amd8111e_priv *lp)
600{
601 u32 intr0;
602
603 /* Disable interrupt */
604 writel(INTREN, lp->mmio + CMD0);
605
606 /* Clear INT0 */
607 intr0 = readl(lp->mmio + INT0);
608 writel(intr0, lp->mmio + INT0);
609
610 /* To avoid PCI posting bug */
611 readl(lp->mmio + INT0);
612
613}
614
615/* This function stops the chip. */
616static void amd8111e_stop_chip(struct amd8111e_priv *lp)
617{
618 writel(RUN, lp->mmio + CMD0);
619
620 /* To avoid PCI posting bug */
621 readl(lp->mmio + CMD0);
622}
623
624/* This function frees the transmiter and receiver descriptor rings. */
625static void amd8111e_free_ring(struct amd8111e_priv *lp)
626{
627 /* Free transmit and receive descriptor rings */
628 if(lp->rx_ring){
629 pci_free_consistent(lp->pci_dev,
630 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
631 lp->rx_ring, lp->rx_ring_dma_addr);
632 lp->rx_ring = NULL;
633 }
634
635 if(lp->tx_ring){
636 pci_free_consistent(lp->pci_dev,
637 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
638 lp->tx_ring, lp->tx_ring_dma_addr);
639
640 lp->tx_ring = NULL;
641 }
642
643}
644
645/* This function will free all the transmit skbs that are actually
646 * transmitted by the device. It will check the ownership of the
647 * skb before freeing the skb.
648 */
649static int amd8111e_tx(struct net_device *dev)
650{
651 struct amd8111e_priv *lp = netdev_priv(dev);
652 int tx_index;
653 int status;
654 /* Complete all the transmit packet */
655 while (lp->tx_complete_idx != lp->tx_idx){
656 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
657 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
658
659 if(status & OWN_BIT)
660 break; /* It still hasn't been Txed */
661
662 lp->tx_ring[tx_index].buff_phy_addr = 0;
663
664 /* We must free the original skb */
665 if (lp->tx_skbuff[tx_index]) {
666 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
667 lp->tx_skbuff[tx_index]->len,
668 PCI_DMA_TODEVICE);
669 dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
670 lp->tx_skbuff[tx_index] = NULL;
671 lp->tx_dma_addr[tx_index] = 0;
672 }
673 lp->tx_complete_idx++;
674 /*COAL update tx coalescing parameters */
675 lp->coal_conf.tx_packets++;
676 lp->coal_conf.tx_bytes +=
677 le16_to_cpu(lp->tx_ring[tx_index].buff_count);
678
679 if (netif_queue_stopped(dev) &&
680 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
681 /* The ring is no longer full, clear tbusy. */
682 /* lp->tx_full = 0; */
683 netif_wake_queue (dev);
684 }
685 }
686 return 0;
687}
688
689/* This function handles the driver receive operation in polling mode */
690static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
691{
692 struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
693 struct net_device *dev = lp->amd8111e_net_dev;
694 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
695 void __iomem *mmio = lp->mmio;
696 struct sk_buff *skb,*new_skb;
697 int min_pkt_len, status;
698 int num_rx_pkt = 0;
699 short pkt_len;
700#if AMD8111E_VLAN_TAG_USED
701 short vtag;
702#endif
703
704 while (num_rx_pkt < budget) {
705 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
706 if (status & OWN_BIT)
707 break;
708
709 /* There is a tricky error noted by John Murphy,
710 * <murf@perftech.com> to Russ Nelson: Even with
711 * full-sized * buffers it's possible for a
712 * jabber packet to use two buffers, with only
713 * the last correctly noting the error.
714 */
715 if (status & ERR_BIT) {
716 /* resetting flags */
717 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
718 goto err_next_pkt;
719 }
720 /* check for STP and ENP */
721 if (!((status & STP_BIT) && (status & ENP_BIT))){
722 /* resetting flags */
723 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
724 goto err_next_pkt;
725 }
726 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
727
728#if AMD8111E_VLAN_TAG_USED
729 vtag = status & TT_MASK;
730 /* MAC will strip vlan tag */
731 if (vtag != 0)
732 min_pkt_len = MIN_PKT_LEN - 4;
733 else
734#endif
735 min_pkt_len = MIN_PKT_LEN;
736
737 if (pkt_len < min_pkt_len) {
738 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
739 lp->drv_rx_errors++;
740 goto err_next_pkt;
741 }
742 new_skb = netdev_alloc_skb(dev, lp->rx_buff_len);
743 if (!new_skb) {
744 /* if allocation fail,
745 * ignore that pkt and go to next one
746 */
747 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
748 lp->drv_rx_errors++;
749 goto err_next_pkt;
750 }
751
752 skb_reserve(new_skb, 2);
753 skb = lp->rx_skbuff[rx_index];
754 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
755 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
756 skb_put(skb, pkt_len);
757 lp->rx_skbuff[rx_index] = new_skb;
758 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
759 new_skb->data,
760 lp->rx_buff_len-2,
761 PCI_DMA_FROMDEVICE);
762
763 skb->protocol = eth_type_trans(skb, dev);
764
765#if AMD8111E_VLAN_TAG_USED
766 if (vtag == TT_VLAN_TAGGED){
767 u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
768 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
769 }
770#endif
771 napi_gro_receive(napi, skb);
772 /* COAL update rx coalescing parameters */
773 lp->coal_conf.rx_packets++;
774 lp->coal_conf.rx_bytes += pkt_len;
775 num_rx_pkt++;
776
777err_next_pkt:
778 lp->rx_ring[rx_index].buff_phy_addr
779 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
780 lp->rx_ring[rx_index].buff_count =
781 cpu_to_le16(lp->rx_buff_len-2);
782 wmb();
783 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
784 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
785 }
786
787 if (num_rx_pkt < budget && napi_complete_done(napi, num_rx_pkt)) {
788 unsigned long flags;
789
790 /* Receive descriptor is empty now */
791 spin_lock_irqsave(&lp->lock, flags);
792 writel(VAL0|RINTEN0, mmio + INTEN0);
793 writel(VAL2 | RDMD0, mmio + CMD0);
794 spin_unlock_irqrestore(&lp->lock, flags);
795 }
796
797 return num_rx_pkt;
798}
799
800/* This function will indicate the link status to the kernel. */
801static int amd8111e_link_change(struct net_device *dev)
802{
803 struct amd8111e_priv *lp = netdev_priv(dev);
804 int status0,speed;
805
806 /* read the link change */
807 status0 = readl(lp->mmio + STAT0);
808
809 if(status0 & LINK_STATS){
810 if(status0 & AUTONEG_COMPLETE)
811 lp->link_config.autoneg = AUTONEG_ENABLE;
812 else
813 lp->link_config.autoneg = AUTONEG_DISABLE;
814
815 if(status0 & FULL_DPLX)
816 lp->link_config.duplex = DUPLEX_FULL;
817 else
818 lp->link_config.duplex = DUPLEX_HALF;
819 speed = (status0 & SPEED_MASK) >> 7;
820 if(speed == PHY_SPEED_10)
821 lp->link_config.speed = SPEED_10;
822 else if(speed == PHY_SPEED_100)
823 lp->link_config.speed = SPEED_100;
824
825 netdev_info(dev, "Link is Up. Speed is %s Mbps %s Duplex\n",
826 (lp->link_config.speed == SPEED_100) ?
827 "100" : "10",
828 (lp->link_config.duplex == DUPLEX_FULL) ?
829 "Full" : "Half");
830
831 netif_carrier_on(dev);
832 }
833 else{
834 lp->link_config.speed = SPEED_INVALID;
835 lp->link_config.duplex = DUPLEX_INVALID;
836 lp->link_config.autoneg = AUTONEG_INVALID;
837 netdev_info(dev, "Link is Down.\n");
838 netif_carrier_off(dev);
839 }
840
841 return 0;
842}
843
844/* This function reads the mib counters. */
845static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
846{
847 unsigned int status;
848 unsigned int data;
849 unsigned int repeat = REPEAT_CNT;
850
851 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
852 do {
853 status = readw(mmio + MIB_ADDR);
854 udelay(2); /* controller takes MAX 2 us to get mib data */
855 }
856 while (--repeat && (status & MIB_CMD_ACTIVE));
857
858 data = readl(mmio + MIB_DATA);
859 return data;
860}
861
862/* This function reads the mib registers and returns the hardware statistics.
863 * It updates previous internal driver statistics with new values.
864 */
865static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
866{
867 struct amd8111e_priv *lp = netdev_priv(dev);
868 void __iomem *mmio = lp->mmio;
869 unsigned long flags;
870 struct net_device_stats *new_stats = &dev->stats;
871
872 if (!lp->opened)
873 return new_stats;
874 spin_lock_irqsave (&lp->lock, flags);
875
876 /* stats.rx_packets */
877 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
878 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
879 amd8111e_read_mib(mmio, rcv_unicast_pkts);
880
881 /* stats.tx_packets */
882 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
883
884 /*stats.rx_bytes */
885 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
886
887 /* stats.tx_bytes */
888 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
889
890 /* stats.rx_errors */
891 /* hw errors + errors driver reported */
892 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
893 amd8111e_read_mib(mmio, rcv_fragments)+
894 amd8111e_read_mib(mmio, rcv_jabbers)+
895 amd8111e_read_mib(mmio, rcv_alignment_errors)+
896 amd8111e_read_mib(mmio, rcv_fcs_errors)+
897 amd8111e_read_mib(mmio, rcv_miss_pkts)+
898 lp->drv_rx_errors;
899
900 /* stats.tx_errors */
901 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
902
903 /* stats.rx_dropped*/
904 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
905
906 /* stats.tx_dropped*/
907 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
908
909 /* stats.multicast*/
910 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
911
912 /* stats.collisions*/
913 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
914
915 /* stats.rx_length_errors*/
916 new_stats->rx_length_errors =
917 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
918 amd8111e_read_mib(mmio, rcv_oversize_pkts);
919
920 /* stats.rx_over_errors*/
921 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
922
923 /* stats.rx_crc_errors*/
924 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
925
926 /* stats.rx_frame_errors*/
927 new_stats->rx_frame_errors =
928 amd8111e_read_mib(mmio, rcv_alignment_errors);
929
930 /* stats.rx_fifo_errors */
931 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
932
933 /* stats.rx_missed_errors */
934 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
935
936 /* stats.tx_aborted_errors*/
937 new_stats->tx_aborted_errors =
938 amd8111e_read_mib(mmio, xmt_excessive_collision);
939
940 /* stats.tx_carrier_errors*/
941 new_stats->tx_carrier_errors =
942 amd8111e_read_mib(mmio, xmt_loss_carrier);
943
944 /* stats.tx_fifo_errors*/
945 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
946
947 /* stats.tx_window_errors*/
948 new_stats->tx_window_errors =
949 amd8111e_read_mib(mmio, xmt_late_collision);
950
951 /* Reset the mibs for collecting new statistics */
952 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
953
954 spin_unlock_irqrestore (&lp->lock, flags);
955
956 return new_stats;
957}
958
959/* This function recalculate the interrupt coalescing mode on every interrupt
960 * according to the datarate and the packet rate.
961 */
962static int amd8111e_calc_coalesce(struct net_device *dev)
963{
964 struct amd8111e_priv *lp = netdev_priv(dev);
965 struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
966 int tx_pkt_rate;
967 int rx_pkt_rate;
968 int tx_data_rate;
969 int rx_data_rate;
970 int rx_pkt_size;
971 int tx_pkt_size;
972
973 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
974 coal_conf->tx_prev_packets = coal_conf->tx_packets;
975
976 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
977 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
978
979 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
980 coal_conf->rx_prev_packets = coal_conf->rx_packets;
981
982 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
983 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
984
985 if(rx_pkt_rate < 800){
986 if(coal_conf->rx_coal_type != NO_COALESCE){
987
988 coal_conf->rx_timeout = 0x0;
989 coal_conf->rx_event_count = 0;
990 amd8111e_set_coalesce(dev,RX_INTR_COAL);
991 coal_conf->rx_coal_type = NO_COALESCE;
992 }
993 }
994 else{
995
996 rx_pkt_size = rx_data_rate/rx_pkt_rate;
997 if (rx_pkt_size < 128){
998 if(coal_conf->rx_coal_type != NO_COALESCE){
999
1000 coal_conf->rx_timeout = 0;
1001 coal_conf->rx_event_count = 0;
1002 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1003 coal_conf->rx_coal_type = NO_COALESCE;
1004 }
1005
1006 }
1007 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1008
1009 if(coal_conf->rx_coal_type != LOW_COALESCE){
1010 coal_conf->rx_timeout = 1;
1011 coal_conf->rx_event_count = 4;
1012 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1013 coal_conf->rx_coal_type = LOW_COALESCE;
1014 }
1015 }
1016 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1017
1018 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1019 coal_conf->rx_timeout = 1;
1020 coal_conf->rx_event_count = 4;
1021 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1022 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1023 }
1024
1025 }
1026 else if(rx_pkt_size >= 1024){
1027 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1028 coal_conf->rx_timeout = 2;
1029 coal_conf->rx_event_count = 3;
1030 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1031 coal_conf->rx_coal_type = HIGH_COALESCE;
1032 }
1033 }
1034 }
1035 /* NOW FOR TX INTR COALESC */
1036 if(tx_pkt_rate < 800){
1037 if(coal_conf->tx_coal_type != NO_COALESCE){
1038
1039 coal_conf->tx_timeout = 0x0;
1040 coal_conf->tx_event_count = 0;
1041 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1042 coal_conf->tx_coal_type = NO_COALESCE;
1043 }
1044 }
1045 else{
1046
1047 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1048 if (tx_pkt_size < 128){
1049
1050 if(coal_conf->tx_coal_type != NO_COALESCE){
1051
1052 coal_conf->tx_timeout = 0;
1053 coal_conf->tx_event_count = 0;
1054 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1055 coal_conf->tx_coal_type = NO_COALESCE;
1056 }
1057
1058 }
1059 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1060
1061 if(coal_conf->tx_coal_type != LOW_COALESCE){
1062 coal_conf->tx_timeout = 1;
1063 coal_conf->tx_event_count = 2;
1064 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1065 coal_conf->tx_coal_type = LOW_COALESCE;
1066
1067 }
1068 }
1069 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1070
1071 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1072 coal_conf->tx_timeout = 2;
1073 coal_conf->tx_event_count = 5;
1074 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1075 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1076 }
1077
1078 }
1079 else if(tx_pkt_size >= 1024){
1080 if (tx_pkt_size >= 1024){
1081 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1082 coal_conf->tx_timeout = 4;
1083 coal_conf->tx_event_count = 8;
1084 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1085 coal_conf->tx_coal_type = HIGH_COALESCE;
1086 }
1087 }
1088 }
1089 }
1090 return 0;
1091
1092}
1093
1094/* This is device interrupt function. It handles transmit,
1095 * receive,link change and hardware timer interrupts.
1096 */
1097static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1098{
1099
1100 struct net_device *dev = (struct net_device *)dev_id;
1101 struct amd8111e_priv *lp = netdev_priv(dev);
1102 void __iomem *mmio = lp->mmio;
1103 unsigned int intr0, intren0;
1104 unsigned int handled = 1;
1105
1106 if(unlikely(dev == NULL))
1107 return IRQ_NONE;
1108
1109 spin_lock(&lp->lock);
1110
1111 /* disabling interrupt */
1112 writel(INTREN, mmio + CMD0);
1113
1114 /* Read interrupt status */
1115 intr0 = readl(mmio + INT0);
1116 intren0 = readl(mmio + INTEN0);
1117
1118 /* Process all the INT event until INTR bit is clear. */
1119
1120 if (!(intr0 & INTR)){
1121 handled = 0;
1122 goto err_no_interrupt;
1123 }
1124
1125 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1126 writel(intr0, mmio + INT0);
1127
1128 /* Check if Receive Interrupt has occurred. */
1129 if (intr0 & RINT0) {
1130 if (napi_schedule_prep(&lp->napi)) {
1131 /* Disable receive interupts */
1132 writel(RINTEN0, mmio + INTEN0);
1133 /* Schedule a polling routine */
1134 __napi_schedule(&lp->napi);
1135 } else if (intren0 & RINTEN0) {
1136 netdev_dbg(dev, "************Driver bug! interrupt while in poll\n");
1137 /* Fix by disable receive interrupts */
1138 writel(RINTEN0, mmio + INTEN0);
1139 }
1140 }
1141
1142 /* Check if Transmit Interrupt has occurred. */
1143 if (intr0 & TINT0)
1144 amd8111e_tx(dev);
1145
1146 /* Check if Link Change Interrupt has occurred. */
1147 if (intr0 & LCINT)
1148 amd8111e_link_change(dev);
1149
1150 /* Check if Hardware Timer Interrupt has occurred. */
1151 if (intr0 & STINT)
1152 amd8111e_calc_coalesce(dev);
1153
1154err_no_interrupt:
1155 writel( VAL0 | INTREN,mmio + CMD0);
1156
1157 spin_unlock(&lp->lock);
1158
1159 return IRQ_RETVAL(handled);
1160}
1161
1162#ifdef CONFIG_NET_POLL_CONTROLLER
1163static void amd8111e_poll(struct net_device *dev)
1164{
1165 unsigned long flags;
1166 local_irq_save(flags);
1167 amd8111e_interrupt(0, dev);
1168 local_irq_restore(flags);
1169}
1170#endif
1171
1172
1173/* This function closes the network interface and updates
1174 * the statistics so that most recent statistics will be
1175 * available after the interface is down.
1176 */
1177static int amd8111e_close(struct net_device *dev)
1178{
1179 struct amd8111e_priv *lp = netdev_priv(dev);
1180 netif_stop_queue(dev);
1181
1182 napi_disable(&lp->napi);
1183
1184 spin_lock_irq(&lp->lock);
1185
1186 amd8111e_disable_interrupt(lp);
1187 amd8111e_stop_chip(lp);
1188
1189 /* Free transmit and receive skbs */
1190 amd8111e_free_skbs(lp->amd8111e_net_dev);
1191
1192 netif_carrier_off(lp->amd8111e_net_dev);
1193
1194 /* Delete ipg timer */
1195 if(lp->options & OPTION_DYN_IPG_ENABLE)
1196 del_timer_sync(&lp->ipg_data.ipg_timer);
1197
1198 spin_unlock_irq(&lp->lock);
1199 free_irq(dev->irq, dev);
1200 amd8111e_free_ring(lp);
1201
1202 /* Update the statistics before closing */
1203 amd8111e_get_stats(dev);
1204 lp->opened = 0;
1205 return 0;
1206}
1207
1208/* This function opens new interface.It requests irq for the device,
1209 * initializes the device,buffers and descriptors, and starts the device.
1210 */
1211static int amd8111e_open(struct net_device *dev)
1212{
1213 struct amd8111e_priv *lp = netdev_priv(dev);
1214
1215 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1216 dev->name, dev))
1217 return -EAGAIN;
1218
1219 napi_enable(&lp->napi);
1220
1221 spin_lock_irq(&lp->lock);
1222
1223 amd8111e_init_hw_default(lp);
1224
1225 if(amd8111e_restart(dev)){
1226 spin_unlock_irq(&lp->lock);
1227 napi_disable(&lp->napi);
1228 if (dev->irq)
1229 free_irq(dev->irq, dev);
1230 return -ENOMEM;
1231 }
1232 /* Start ipg timer */
1233 if(lp->options & OPTION_DYN_IPG_ENABLE){
1234 add_timer(&lp->ipg_data.ipg_timer);
1235 netdev_info(dev, "Dynamic IPG Enabled\n");
1236 }
1237
1238 lp->opened = 1;
1239
1240 spin_unlock_irq(&lp->lock);
1241
1242 netif_start_queue(dev);
1243
1244 return 0;
1245}
1246
1247/* This function checks if there is any transmit descriptors
1248 * available to queue more packet.
1249 */
1250static int amd8111e_tx_queue_avail(struct amd8111e_priv *lp)
1251{
1252 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1253 if (lp->tx_skbuff[tx_index])
1254 return -1;
1255 else
1256 return 0;
1257
1258}
1259
1260/* This function will queue the transmit packets to the
1261 * descriptors and will trigger the send operation. It also
1262 * initializes the transmit descriptors with buffer physical address,
1263 * byte count, ownership to hardware etc.
1264 */
1265static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
1266 struct net_device *dev)
1267{
1268 struct amd8111e_priv *lp = netdev_priv(dev);
1269 int tx_index;
1270 unsigned long flags;
1271
1272 spin_lock_irqsave(&lp->lock, flags);
1273
1274 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1275
1276 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1277
1278 lp->tx_skbuff[tx_index] = skb;
1279 lp->tx_ring[tx_index].tx_flags = 0;
1280
1281#if AMD8111E_VLAN_TAG_USED
1282 if (skb_vlan_tag_present(skb)) {
1283 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1284 cpu_to_le16(TCC_VLAN_INSERT);
1285 lp->tx_ring[tx_index].tag_ctrl_info =
1286 cpu_to_le16(skb_vlan_tag_get(skb));
1287
1288 }
1289#endif
1290 lp->tx_dma_addr[tx_index] =
1291 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1292 lp->tx_ring[tx_index].buff_phy_addr =
1293 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1294
1295 /* Set FCS and LTINT bits */
1296 wmb();
1297 lp->tx_ring[tx_index].tx_flags |=
1298 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1299
1300 lp->tx_idx++;
1301
1302 /* Trigger an immediate send poll. */
1303 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1304 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1305
1306 if(amd8111e_tx_queue_avail(lp) < 0){
1307 netif_stop_queue(dev);
1308 }
1309 spin_unlock_irqrestore(&lp->lock, flags);
1310 return NETDEV_TX_OK;
1311}
1312/* This function returns all the memory mapped registers of the device. */
1313static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1314{
1315 void __iomem *mmio = lp->mmio;
1316 /* Read only necessary registers */
1317 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1318 buf[1] = readl(mmio + XMT_RING_LEN0);
1319 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1320 buf[3] = readl(mmio + RCV_RING_LEN0);
1321 buf[4] = readl(mmio + CMD0);
1322 buf[5] = readl(mmio + CMD2);
1323 buf[6] = readl(mmio + CMD3);
1324 buf[7] = readl(mmio + CMD7);
1325 buf[8] = readl(mmio + INT0);
1326 buf[9] = readl(mmio + INTEN0);
1327 buf[10] = readl(mmio + LADRF);
1328 buf[11] = readl(mmio + LADRF+4);
1329 buf[12] = readl(mmio + STAT0);
1330}
1331
1332
1333/* This function sets promiscuos mode, all-multi mode or the multicast address
1334 * list to the device.
1335 */
1336static void amd8111e_set_multicast_list(struct net_device *dev)
1337{
1338 struct netdev_hw_addr *ha;
1339 struct amd8111e_priv *lp = netdev_priv(dev);
1340 u32 mc_filter[2] ;
1341 int bit_num;
1342
1343 if(dev->flags & IFF_PROMISC){
1344 writel( VAL2 | PROM, lp->mmio + CMD2);
1345 return;
1346 }
1347 else
1348 writel( PROM, lp->mmio + CMD2);
1349 if (dev->flags & IFF_ALLMULTI ||
1350 netdev_mc_count(dev) > MAX_FILTER_SIZE) {
1351 /* get all multicast packet */
1352 mc_filter[1] = mc_filter[0] = 0xffffffff;
1353 lp->options |= OPTION_MULTICAST_ENABLE;
1354 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1355 return;
1356 }
1357 if (netdev_mc_empty(dev)) {
1358 /* get only own packets */
1359 mc_filter[1] = mc_filter[0] = 0;
1360 lp->options &= ~OPTION_MULTICAST_ENABLE;
1361 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1362 /* disable promiscuous mode */
1363 writel(PROM, lp->mmio + CMD2);
1364 return;
1365 }
1366 /* load all the multicast addresses in the logic filter */
1367 lp->options |= OPTION_MULTICAST_ENABLE;
1368 mc_filter[1] = mc_filter[0] = 0;
1369 netdev_for_each_mc_addr(ha, dev) {
1370 bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
1371 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1372 }
1373 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1374
1375 /* To eliminate PCI posting bug */
1376 readl(lp->mmio + CMD2);
1377
1378}
1379
1380static void amd8111e_get_drvinfo(struct net_device *dev,
1381 struct ethtool_drvinfo *info)
1382{
1383 struct amd8111e_priv *lp = netdev_priv(dev);
1384 struct pci_dev *pci_dev = lp->pci_dev;
1385 strlcpy(info->driver, MODULE_NAME, sizeof(info->driver));
1386 strlcpy(info->version, MODULE_VERS, sizeof(info->version));
1387 snprintf(info->fw_version, sizeof(info->fw_version),
1388 "%u", chip_version);
1389 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
1390}
1391
1392static int amd8111e_get_regs_len(struct net_device *dev)
1393{
1394 return AMD8111E_REG_DUMP_LEN;
1395}
1396
1397static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1398{
1399 struct amd8111e_priv *lp = netdev_priv(dev);
1400 regs->version = 0;
1401 amd8111e_read_regs(lp, buf);
1402}
1403
1404static int amd8111e_get_link_ksettings(struct net_device *dev,
1405 struct ethtool_link_ksettings *cmd)
1406{
1407 struct amd8111e_priv *lp = netdev_priv(dev);
1408 spin_lock_irq(&lp->lock);
1409 mii_ethtool_get_link_ksettings(&lp->mii_if, cmd);
1410 spin_unlock_irq(&lp->lock);
1411 return 0;
1412}
1413
1414static int amd8111e_set_link_ksettings(struct net_device *dev,
1415 const struct ethtool_link_ksettings *cmd)
1416{
1417 struct amd8111e_priv *lp = netdev_priv(dev);
1418 int res;
1419 spin_lock_irq(&lp->lock);
1420 res = mii_ethtool_set_link_ksettings(&lp->mii_if, cmd);
1421 spin_unlock_irq(&lp->lock);
1422 return res;
1423}
1424
1425static int amd8111e_nway_reset(struct net_device *dev)
1426{
1427 struct amd8111e_priv *lp = netdev_priv(dev);
1428 return mii_nway_restart(&lp->mii_if);
1429}
1430
1431static u32 amd8111e_get_link(struct net_device *dev)
1432{
1433 struct amd8111e_priv *lp = netdev_priv(dev);
1434 return mii_link_ok(&lp->mii_if);
1435}
1436
1437static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1438{
1439 struct amd8111e_priv *lp = netdev_priv(dev);
1440 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1441 if (lp->options & OPTION_WOL_ENABLE)
1442 wol_info->wolopts = WAKE_MAGIC;
1443}
1444
1445static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1446{
1447 struct amd8111e_priv *lp = netdev_priv(dev);
1448 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1449 return -EINVAL;
1450 spin_lock_irq(&lp->lock);
1451 if (wol_info->wolopts & WAKE_MAGIC)
1452 lp->options |=
1453 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1454 else if(wol_info->wolopts & WAKE_PHY)
1455 lp->options |=
1456 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1457 else
1458 lp->options &= ~OPTION_WOL_ENABLE;
1459 spin_unlock_irq(&lp->lock);
1460 return 0;
1461}
1462
1463static const struct ethtool_ops ops = {
1464 .get_drvinfo = amd8111e_get_drvinfo,
1465 .get_regs_len = amd8111e_get_regs_len,
1466 .get_regs = amd8111e_get_regs,
1467 .nway_reset = amd8111e_nway_reset,
1468 .get_link = amd8111e_get_link,
1469 .get_wol = amd8111e_get_wol,
1470 .set_wol = amd8111e_set_wol,
1471 .get_link_ksettings = amd8111e_get_link_ksettings,
1472 .set_link_ksettings = amd8111e_set_link_ksettings,
1473};
1474
1475/* This function handles all the ethtool ioctls. It gives driver info,
1476 * gets/sets driver speed, gets memory mapped register values, forces
1477 * auto negotiation, sets/gets WOL options for ethtool application.
1478 */
1479static int amd8111e_ioctl(struct net_device *dev , struct ifreq *ifr, int cmd)
1480{
1481 struct mii_ioctl_data *data = if_mii(ifr);
1482 struct amd8111e_priv *lp = netdev_priv(dev);
1483 int err;
1484 u32 mii_regval;
1485
1486 switch(cmd) {
1487 case SIOCGMIIPHY:
1488 data->phy_id = lp->ext_phy_addr;
1489
1490 /* fallthru */
1491 case SIOCGMIIREG:
1492
1493 spin_lock_irq(&lp->lock);
1494 err = amd8111e_read_phy(lp, data->phy_id,
1495 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1496 spin_unlock_irq(&lp->lock);
1497
1498 data->val_out = mii_regval;
1499 return err;
1500
1501 case SIOCSMIIREG:
1502
1503 spin_lock_irq(&lp->lock);
1504 err = amd8111e_write_phy(lp, data->phy_id,
1505 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1506 spin_unlock_irq(&lp->lock);
1507
1508 return err;
1509
1510 default:
1511 /* do nothing */
1512 break;
1513 }
1514 return -EOPNOTSUPP;
1515}
1516static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1517{
1518 struct amd8111e_priv *lp = netdev_priv(dev);
1519 int i;
1520 struct sockaddr *addr = p;
1521
1522 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1523 spin_lock_irq(&lp->lock);
1524 /* Setting the MAC address to the device */
1525 for (i = 0; i < ETH_ALEN; i++)
1526 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1527
1528 spin_unlock_irq(&lp->lock);
1529
1530 return 0;
1531}
1532
1533/* This function changes the mtu of the device. It restarts the device to
1534 * initialize the descriptor with new receive buffers.
1535 */
1536static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1537{
1538 struct amd8111e_priv *lp = netdev_priv(dev);
1539 int err;
1540
1541 if (!netif_running(dev)) {
1542 /* new_mtu will be used
1543 * when device starts netxt time
1544 */
1545 dev->mtu = new_mtu;
1546 return 0;
1547 }
1548
1549 spin_lock_irq(&lp->lock);
1550
1551 /* stop the chip */
1552 writel(RUN, lp->mmio + CMD0);
1553
1554 dev->mtu = new_mtu;
1555
1556 err = amd8111e_restart(dev);
1557 spin_unlock_irq(&lp->lock);
1558 if(!err)
1559 netif_start_queue(dev);
1560 return err;
1561}
1562
1563static int amd8111e_enable_magicpkt(struct amd8111e_priv *lp)
1564{
1565 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1566 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1567
1568 /* To eliminate PCI posting bug */
1569 readl(lp->mmio + CMD7);
1570 return 0;
1571}
1572
1573static int amd8111e_enable_link_change(struct amd8111e_priv *lp)
1574{
1575
1576 /* Adapter is already stoped/suspended/interrupt-disabled */
1577 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1578
1579 /* To eliminate PCI posting bug */
1580 readl(lp->mmio + CMD7);
1581 return 0;
1582}
1583
1584/* This function is called when a packet transmission fails to complete
1585 * within a reasonable period, on the assumption that an interrupt have
1586 * failed or the interface is locked up. This function will reinitialize
1587 * the hardware.
1588 */
1589static void amd8111e_tx_timeout(struct net_device *dev)
1590{
1591 struct amd8111e_priv *lp = netdev_priv(dev);
1592 int err;
1593
1594 netdev_err(dev, "transmit timed out, resetting\n");
1595
1596 spin_lock_irq(&lp->lock);
1597 err = amd8111e_restart(dev);
1598 spin_unlock_irq(&lp->lock);
1599 if(!err)
1600 netif_wake_queue(dev);
1601}
1602static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1603{
1604 struct net_device *dev = pci_get_drvdata(pci_dev);
1605 struct amd8111e_priv *lp = netdev_priv(dev);
1606
1607 if (!netif_running(dev))
1608 return 0;
1609
1610 /* disable the interrupt */
1611 spin_lock_irq(&lp->lock);
1612 amd8111e_disable_interrupt(lp);
1613 spin_unlock_irq(&lp->lock);
1614
1615 netif_device_detach(dev);
1616
1617 /* stop chip */
1618 spin_lock_irq(&lp->lock);
1619 if(lp->options & OPTION_DYN_IPG_ENABLE)
1620 del_timer_sync(&lp->ipg_data.ipg_timer);
1621 amd8111e_stop_chip(lp);
1622 spin_unlock_irq(&lp->lock);
1623
1624 if(lp->options & OPTION_WOL_ENABLE){
1625 /* enable wol */
1626 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1627 amd8111e_enable_magicpkt(lp);
1628 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1629 amd8111e_enable_link_change(lp);
1630
1631 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1632 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1633
1634 }
1635 else{
1636 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1637 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1638 }
1639
1640 pci_save_state(pci_dev);
1641 pci_set_power_state(pci_dev, PCI_D3hot);
1642
1643 return 0;
1644}
1645static int amd8111e_resume(struct pci_dev *pci_dev)
1646{
1647 struct net_device *dev = pci_get_drvdata(pci_dev);
1648 struct amd8111e_priv *lp = netdev_priv(dev);
1649
1650 if (!netif_running(dev))
1651 return 0;
1652
1653 pci_set_power_state(pci_dev, PCI_D0);
1654 pci_restore_state(pci_dev);
1655
1656 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1657 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1658
1659 netif_device_attach(dev);
1660
1661 spin_lock_irq(&lp->lock);
1662 amd8111e_restart(dev);
1663 /* Restart ipg timer */
1664 if(lp->options & OPTION_DYN_IPG_ENABLE)
1665 mod_timer(&lp->ipg_data.ipg_timer,
1666 jiffies + IPG_CONVERGE_JIFFIES);
1667 spin_unlock_irq(&lp->lock);
1668
1669 return 0;
1670}
1671
1672static void amd8111e_config_ipg(struct timer_list *t)
1673{
1674 struct amd8111e_priv *lp = from_timer(lp, t, ipg_data.ipg_timer);
1675 struct ipg_info *ipg_data = &lp->ipg_data;
1676 void __iomem *mmio = lp->mmio;
1677 unsigned int prev_col_cnt = ipg_data->col_cnt;
1678 unsigned int total_col_cnt;
1679 unsigned int tmp_ipg;
1680
1681 if(lp->link_config.duplex == DUPLEX_FULL){
1682 ipg_data->ipg = DEFAULT_IPG;
1683 return;
1684 }
1685
1686 if(ipg_data->ipg_state == SSTATE){
1687
1688 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1689
1690 ipg_data->timer_tick = 0;
1691 ipg_data->ipg = MIN_IPG - IPG_STEP;
1692 ipg_data->current_ipg = MIN_IPG;
1693 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1694 ipg_data->ipg_state = CSTATE;
1695 }
1696 else
1697 ipg_data->timer_tick++;
1698 }
1699
1700 if(ipg_data->ipg_state == CSTATE){
1701
1702 /* Get the current collision count */
1703
1704 total_col_cnt = ipg_data->col_cnt =
1705 amd8111e_read_mib(mmio, xmt_collisions);
1706
1707 if ((total_col_cnt - prev_col_cnt) <
1708 (ipg_data->diff_col_cnt)){
1709
1710 ipg_data->diff_col_cnt =
1711 total_col_cnt - prev_col_cnt ;
1712
1713 ipg_data->ipg = ipg_data->current_ipg;
1714 }
1715
1716 ipg_data->current_ipg += IPG_STEP;
1717
1718 if (ipg_data->current_ipg <= MAX_IPG)
1719 tmp_ipg = ipg_data->current_ipg;
1720 else{
1721 tmp_ipg = ipg_data->ipg;
1722 ipg_data->ipg_state = SSTATE;
1723 }
1724 writew((u32)tmp_ipg, mmio + IPG);
1725 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1726 }
1727 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1728 return;
1729
1730}
1731
1732static void amd8111e_probe_ext_phy(struct net_device *dev)
1733{
1734 struct amd8111e_priv *lp = netdev_priv(dev);
1735 int i;
1736
1737 for (i = 0x1e; i >= 0; i--) {
1738 u32 id1, id2;
1739
1740 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1741 continue;
1742 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1743 continue;
1744 lp->ext_phy_id = (id1 << 16) | id2;
1745 lp->ext_phy_addr = i;
1746 return;
1747 }
1748 lp->ext_phy_id = 0;
1749 lp->ext_phy_addr = 1;
1750}
1751
1752static const struct net_device_ops amd8111e_netdev_ops = {
1753 .ndo_open = amd8111e_open,
1754 .ndo_stop = amd8111e_close,
1755 .ndo_start_xmit = amd8111e_start_xmit,
1756 .ndo_tx_timeout = amd8111e_tx_timeout,
1757 .ndo_get_stats = amd8111e_get_stats,
1758 .ndo_set_rx_mode = amd8111e_set_multicast_list,
1759 .ndo_validate_addr = eth_validate_addr,
1760 .ndo_set_mac_address = amd8111e_set_mac_address,
1761 .ndo_do_ioctl = amd8111e_ioctl,
1762 .ndo_change_mtu = amd8111e_change_mtu,
1763#ifdef CONFIG_NET_POLL_CONTROLLER
1764 .ndo_poll_controller = amd8111e_poll,
1765#endif
1766};
1767
1768static int amd8111e_probe_one(struct pci_dev *pdev,
1769 const struct pci_device_id *ent)
1770{
1771 int err, i;
1772 unsigned long reg_addr,reg_len;
1773 struct amd8111e_priv *lp;
1774 struct net_device *dev;
1775
1776 err = pci_enable_device(pdev);
1777 if(err){
1778 dev_err(&pdev->dev, "Cannot enable new PCI device\n");
1779 return err;
1780 }
1781
1782 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1783 dev_err(&pdev->dev, "Cannot find PCI base address\n");
1784 err = -ENODEV;
1785 goto err_disable_pdev;
1786 }
1787
1788 err = pci_request_regions(pdev, MODULE_NAME);
1789 if(err){
1790 dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
1791 goto err_disable_pdev;
1792 }
1793
1794 pci_set_master(pdev);
1795
1796 /* Find power-management capability. */
1797 if (!pdev->pm_cap) {
1798 dev_err(&pdev->dev, "No Power Management capability\n");
1799 err = -ENODEV;
1800 goto err_free_reg;
1801 }
1802
1803 /* Initialize DMA */
1804 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) < 0) {
1805 dev_err(&pdev->dev, "DMA not supported\n");
1806 err = -ENODEV;
1807 goto err_free_reg;
1808 }
1809
1810 reg_addr = pci_resource_start(pdev, 0);
1811 reg_len = pci_resource_len(pdev, 0);
1812
1813 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1814 if (!dev) {
1815 err = -ENOMEM;
1816 goto err_free_reg;
1817 }
1818
1819 SET_NETDEV_DEV(dev, &pdev->dev);
1820
1821#if AMD8111E_VLAN_TAG_USED
1822 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX ;
1823#endif
1824
1825 lp = netdev_priv(dev);
1826 lp->pci_dev = pdev;
1827 lp->amd8111e_net_dev = dev;
1828 lp->pm_cap = pdev->pm_cap;
1829
1830 spin_lock_init(&lp->lock);
1831
1832 lp->mmio = devm_ioremap(&pdev->dev, reg_addr, reg_len);
1833 if (!lp->mmio) {
1834 dev_err(&pdev->dev, "Cannot map device registers\n");
1835 err = -ENOMEM;
1836 goto err_free_dev;
1837 }
1838
1839 /* Initializing MAC address */
1840 for (i = 0; i < ETH_ALEN; i++)
1841 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1842
1843 /* Setting user defined parametrs */
1844 lp->ext_phy_option = speed_duplex[card_idx];
1845 if(coalesce[card_idx])
1846 lp->options |= OPTION_INTR_COAL_ENABLE;
1847 if(dynamic_ipg[card_idx++])
1848 lp->options |= OPTION_DYN_IPG_ENABLE;
1849
1850
1851 /* Initialize driver entry points */
1852 dev->netdev_ops = &amd8111e_netdev_ops;
1853 dev->ethtool_ops = &ops;
1854 dev->irq =pdev->irq;
1855 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1856 dev->min_mtu = AMD8111E_MIN_MTU;
1857 dev->max_mtu = AMD8111E_MAX_MTU;
1858 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1859
1860#if AMD8111E_VLAN_TAG_USED
1861 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
1862#endif
1863 /* Probe the external PHY */
1864 amd8111e_probe_ext_phy(dev);
1865
1866 /* setting mii default values */
1867 lp->mii_if.dev = dev;
1868 lp->mii_if.mdio_read = amd8111e_mdio_read;
1869 lp->mii_if.mdio_write = amd8111e_mdio_write;
1870 lp->mii_if.phy_id = lp->ext_phy_addr;
1871
1872 /* Set receive buffer length and set jumbo option*/
1873 amd8111e_set_rx_buff_len(dev);
1874
1875
1876 err = register_netdev(dev);
1877 if (err) {
1878 dev_err(&pdev->dev, "Cannot register net device\n");
1879 goto err_free_dev;
1880 }
1881
1882 pci_set_drvdata(pdev, dev);
1883
1884 /* Initialize software ipg timer */
1885 if(lp->options & OPTION_DYN_IPG_ENABLE){
1886 timer_setup(&lp->ipg_data.ipg_timer, amd8111e_config_ipg, 0);
1887 lp->ipg_data.ipg_timer.expires = jiffies +
1888 IPG_CONVERGE_JIFFIES;
1889 lp->ipg_data.ipg = DEFAULT_IPG;
1890 lp->ipg_data.ipg_state = CSTATE;
1891 }
1892
1893 /* display driver and device information */
1894 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1895 dev_info(&pdev->dev, "AMD-8111e Driver Version: %s\n", MODULE_VERS);
1896 dev_info(&pdev->dev, "[ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1897 chip_version, dev->dev_addr);
1898 if (lp->ext_phy_id)
1899 dev_info(&pdev->dev, "Found MII PHY ID 0x%08x at address 0x%02x\n",
1900 lp->ext_phy_id, lp->ext_phy_addr);
1901 else
1902 dev_info(&pdev->dev, "Couldn't detect MII PHY, assuming address 0x01\n");
1903
1904 return 0;
1905
1906err_free_dev:
1907 free_netdev(dev);
1908
1909err_free_reg:
1910 pci_release_regions(pdev);
1911
1912err_disable_pdev:
1913 pci_disable_device(pdev);
1914 return err;
1915
1916}
1917
1918static void amd8111e_remove_one(struct pci_dev *pdev)
1919{
1920 struct net_device *dev = pci_get_drvdata(pdev);
1921
1922 if (dev) {
1923 unregister_netdev(dev);
1924 free_netdev(dev);
1925 pci_release_regions(pdev);
1926 pci_disable_device(pdev);
1927 }
1928}
1929
1930static const struct pci_device_id amd8111e_pci_tbl[] = {
1931 {
1932 .vendor = PCI_VENDOR_ID_AMD,
1933 .device = PCI_DEVICE_ID_AMD8111E_7462,
1934 },
1935 {
1936 .vendor = 0,
1937 }
1938};
1939MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
1940
1941static struct pci_driver amd8111e_driver = {
1942 .name = MODULE_NAME,
1943 .id_table = amd8111e_pci_tbl,
1944 .probe = amd8111e_probe_one,
1945 .remove = amd8111e_remove_one,
1946 .suspend = amd8111e_suspend,
1947 .resume = amd8111e_resume
1948};
1949
1950module_pci_driver(amd8111e_driver);