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[deliverable/linux.git] / drivers / net / amd8111e.c
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, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 * USA
30
31 Module Name:
32
33 amd8111e.c
34
35 Abstract:
36
37 AMD8111 based 10/100 Ethernet Controller Driver.
38
39 Environment:
40
41 Kernel Mode
42
43 Revision History:
44 3.0.0
45 Initial Revision.
46 3.0.1
47 1. Dynamic interrupt coalescing.
48 2. Removed prev_stats.
49 3. MII support.
50 4. Dynamic IPG support
51 3.0.2 05/29/2003
52 1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
53 2. Bug fix: Fixed VLAN support failure.
54 3. Bug fix: Fixed receive interrupt coalescing bug.
55 4. Dynamic IPG support is disabled by default.
56 3.0.3 06/05/2003
57 1. Bug fix: Fixed failure to close the interface if SMP is enabled.
58 3.0.4 12/09/2003
59 1. Added set_mac_address routine for bonding driver support.
60 2. Tested the driver for bonding support
61 3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth
62 indicated to the h/w.
63 4. Modified amd8111e_rx() routine to receive all the received packets
64 in the first interrupt.
65 5. Bug fix: Corrected rx_errors reported in get_stats() function.
66 3.0.5 03/22/2004
67 1. Added NAPI support
68
69 */
70
71
72 #include <linux/module.h>
73 #include <linux/kernel.h>
74 #include <linux/types.h>
75 #include <linux/compiler.h>
76 #include <linux/slab.h>
77 #include <linux/delay.h>
78 #include <linux/init.h>
79 #include <linux/ioport.h>
80 #include <linux/pci.h>
81 #include <linux/netdevice.h>
82 #include <linux/etherdevice.h>
83 #include <linux/skbuff.h>
84 #include <linux/ethtool.h>
85 #include <linux/mii.h>
86 #include <linux/if_vlan.h>
87 #include <linux/ctype.h>
88 #include <linux/crc32.h>
89 #include <linux/dma-mapping.h>
90
91 #include <asm/system.h>
92 #include <asm/io.h>
93 #include <asm/byteorder.h>
94 #include <asm/uaccess.h>
95
96 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
97 #define AMD8111E_VLAN_TAG_USED 1
98 #else
99 #define AMD8111E_VLAN_TAG_USED 0
100 #endif
101
102 #include "amd8111e.h"
103 #define MODULE_NAME "amd8111e"
104 #define MODULE_VERS "3.0.7"
105 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
106 MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS);
107 MODULE_LICENSE("GPL");
108 MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
109 module_param_array(speed_duplex, int, NULL, 0);
110 MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotitate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex");
111 module_param_array(coalesce, bool, NULL, 0);
112 MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
113 module_param_array(dynamic_ipg, bool, NULL, 0);
114 MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
115
116 static struct pci_device_id amd8111e_pci_tbl[] = {
117
118 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD8111E_7462,
119 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
120 { 0, }
121
122 };
123 /*
124 This function will read the PHY registers.
125 */
126 static int amd8111e_read_phy(struct amd8111e_priv* lp, int phy_id, int reg, u32* val)
127 {
128 void __iomem *mmio = lp->mmio;
129 unsigned int reg_val;
130 unsigned int repeat= REPEAT_CNT;
131
132 reg_val = readl(mmio + PHY_ACCESS);
133 while (reg_val & PHY_CMD_ACTIVE)
134 reg_val = readl( mmio + PHY_ACCESS );
135
136 writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
137 ((reg & 0x1f) << 16), mmio +PHY_ACCESS);
138 do{
139 reg_val = readl(mmio + PHY_ACCESS);
140 udelay(30); /* It takes 30 us to read/write data */
141 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
142 if(reg_val & PHY_RD_ERR)
143 goto err_phy_read;
144
145 *val = reg_val & 0xffff;
146 return 0;
147 err_phy_read:
148 *val = 0;
149 return -EINVAL;
150
151 }
152
153 /*
154 This function will write into PHY registers.
155 */
156 static int amd8111e_write_phy(struct amd8111e_priv* lp,int phy_id, int reg, u32 val)
157 {
158 unsigned int repeat = REPEAT_CNT;
159 void __iomem *mmio = lp->mmio;
160 unsigned int reg_val;
161
162 reg_val = readl(mmio + PHY_ACCESS);
163 while (reg_val & PHY_CMD_ACTIVE)
164 reg_val = readl( mmio + PHY_ACCESS );
165
166 writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
167 ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
168
169 do{
170 reg_val = readl(mmio + PHY_ACCESS);
171 udelay(30); /* It takes 30 us to read/write the data */
172 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
173
174 if(reg_val & PHY_RD_ERR)
175 goto err_phy_write;
176
177 return 0;
178
179 err_phy_write:
180 return -EINVAL;
181
182 }
183 /*
184 This is the mii register read function provided to the mii interface.
185 */
186 static int amd8111e_mdio_read(struct net_device * dev, int phy_id, int reg_num)
187 {
188 struct amd8111e_priv* lp = netdev_priv(dev);
189 unsigned int reg_val;
190
191 amd8111e_read_phy(lp,phy_id,reg_num,&reg_val);
192 return reg_val;
193
194 }
195
196 /*
197 This is the mii register write function provided to the mii interface.
198 */
199 static void amd8111e_mdio_write(struct net_device * dev, int phy_id, int reg_num, int val)
200 {
201 struct amd8111e_priv* lp = netdev_priv(dev);
202
203 amd8111e_write_phy(lp, phy_id, reg_num, val);
204 }
205
206 /*
207 This function will set PHY speed. During initialization sets the original speed to 100 full.
208 */
209 static void amd8111e_set_ext_phy(struct net_device *dev)
210 {
211 struct amd8111e_priv *lp = netdev_priv(dev);
212 u32 bmcr,advert,tmp;
213
214 /* Determine mii register values to set the speed */
215 advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
216 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
217 switch (lp->ext_phy_option){
218
219 default:
220 case SPEED_AUTONEG: /* advertise all values */
221 tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
222 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
223 break;
224 case SPEED10_HALF:
225 tmp |= ADVERTISE_10HALF;
226 break;
227 case SPEED10_FULL:
228 tmp |= ADVERTISE_10FULL;
229 break;
230 case SPEED100_HALF:
231 tmp |= ADVERTISE_100HALF;
232 break;
233 case SPEED100_FULL:
234 tmp |= ADVERTISE_100FULL;
235 break;
236 }
237
238 if(advert != tmp)
239 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
240 /* Restart auto negotiation */
241 bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
242 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
243 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
244
245 }
246
247 /*
248 This function will unmap skb->data space and will free
249 all transmit and receive skbuffs.
250 */
251 static int amd8111e_free_skbs(struct net_device *dev)
252 {
253 struct amd8111e_priv *lp = netdev_priv(dev);
254 struct sk_buff* rx_skbuff;
255 int i;
256
257 /* Freeing transmit skbs */
258 for(i = 0; i < NUM_TX_BUFFERS; i++){
259 if(lp->tx_skbuff[i]){
260 pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i], lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE);
261 dev_kfree_skb (lp->tx_skbuff[i]);
262 lp->tx_skbuff[i] = NULL;
263 lp->tx_dma_addr[i] = 0;
264 }
265 }
266 /* Freeing previously allocated receive buffers */
267 for (i = 0; i < NUM_RX_BUFFERS; i++){
268 rx_skbuff = lp->rx_skbuff[i];
269 if(rx_skbuff != NULL){
270 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i],
271 lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE);
272 dev_kfree_skb(lp->rx_skbuff[i]);
273 lp->rx_skbuff[i] = NULL;
274 lp->rx_dma_addr[i] = 0;
275 }
276 }
277
278 return 0;
279 }
280
281 /*
282 This will set the receive buffer length corresponding to the mtu size of networkinterface.
283 */
284 static inline void amd8111e_set_rx_buff_len(struct net_device* dev)
285 {
286 struct amd8111e_priv* lp = netdev_priv(dev);
287 unsigned int mtu = dev->mtu;
288
289 if (mtu > ETH_DATA_LEN){
290 /* MTU + ethernet header + FCS
291 + optional VLAN tag + skb reserve space 2 */
292
293 lp->rx_buff_len = mtu + ETH_HLEN + 10;
294 lp->options |= OPTION_JUMBO_ENABLE;
295 } else{
296 lp->rx_buff_len = PKT_BUFF_SZ;
297 lp->options &= ~OPTION_JUMBO_ENABLE;
298 }
299 }
300
301 /*
302 This function will free all the previously allocated buffers, determine new receive buffer length and will allocate new receive buffers. This function also allocates and initializes both the transmitter and receive hardware descriptors.
303 */
304 static int amd8111e_init_ring(struct net_device *dev)
305 {
306 struct amd8111e_priv *lp = netdev_priv(dev);
307 int i;
308
309 lp->rx_idx = lp->tx_idx = 0;
310 lp->tx_complete_idx = 0;
311 lp->tx_ring_idx = 0;
312
313
314 if(lp->opened)
315 /* Free previously allocated transmit and receive skbs */
316 amd8111e_free_skbs(dev);
317
318 else{
319 /* allocate the tx and rx descriptors */
320 if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
321 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
322 &lp->tx_ring_dma_addr)) == NULL)
323
324 goto err_no_mem;
325
326 if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
327 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
328 &lp->rx_ring_dma_addr)) == NULL)
329
330 goto err_free_tx_ring;
331
332 }
333 /* Set new receive buff size */
334 amd8111e_set_rx_buff_len(dev);
335
336 /* Allocating receive skbs */
337 for (i = 0; i < NUM_RX_BUFFERS; i++) {
338
339 if (!(lp->rx_skbuff[i] = dev_alloc_skb(lp->rx_buff_len))) {
340 /* Release previos allocated skbs */
341 for(--i; i >= 0 ;i--)
342 dev_kfree_skb(lp->rx_skbuff[i]);
343 goto err_free_rx_ring;
344 }
345 skb_reserve(lp->rx_skbuff[i],2);
346 }
347 /* Initilaizing receive descriptors */
348 for (i = 0; i < NUM_RX_BUFFERS; i++) {
349 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev,
350 lp->rx_skbuff[i]->data,lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
351
352 lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
353 lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
354 wmb();
355 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
356 }
357
358 /* Initializing transmit descriptors */
359 for (i = 0; i < NUM_TX_RING_DR; i++) {
360 lp->tx_ring[i].buff_phy_addr = 0;
361 lp->tx_ring[i].tx_flags = 0;
362 lp->tx_ring[i].buff_count = 0;
363 }
364
365 return 0;
366
367 err_free_rx_ring:
368
369 pci_free_consistent(lp->pci_dev,
370 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,lp->rx_ring,
371 lp->rx_ring_dma_addr);
372
373 err_free_tx_ring:
374
375 pci_free_consistent(lp->pci_dev,
376 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,lp->tx_ring,
377 lp->tx_ring_dma_addr);
378
379 err_no_mem:
380 return -ENOMEM;
381 }
382 /* This function will set the interrupt coalescing according to the input arguments */
383 static int amd8111e_set_coalesce(struct net_device * dev, enum coal_mode cmod)
384 {
385 unsigned int timeout;
386 unsigned int event_count;
387
388 struct amd8111e_priv *lp = netdev_priv(dev);
389 void __iomem *mmio = lp->mmio;
390 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
391
392
393 switch(cmod)
394 {
395 case RX_INTR_COAL :
396 timeout = coal_conf->rx_timeout;
397 event_count = coal_conf->rx_event_count;
398 if( timeout > MAX_TIMEOUT ||
399 event_count > MAX_EVENT_COUNT )
400 return -EINVAL;
401
402 timeout = timeout * DELAY_TIMER_CONV;
403 writel(VAL0|STINTEN, mmio+INTEN0);
404 writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout,
405 mmio+DLY_INT_A);
406 break;
407
408 case TX_INTR_COAL :
409 timeout = coal_conf->tx_timeout;
410 event_count = coal_conf->tx_event_count;
411 if( timeout > MAX_TIMEOUT ||
412 event_count > MAX_EVENT_COUNT )
413 return -EINVAL;
414
415
416 timeout = timeout * DELAY_TIMER_CONV;
417 writel(VAL0|STINTEN,mmio+INTEN0);
418 writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout,
419 mmio+DLY_INT_B);
420 break;
421
422 case DISABLE_COAL:
423 writel(0,mmio+STVAL);
424 writel(STINTEN, mmio+INTEN0);
425 writel(0, mmio +DLY_INT_B);
426 writel(0, mmio+DLY_INT_A);
427 break;
428 case ENABLE_COAL:
429 /* Start the timer */
430 writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /* 0.5 sec */
431 writel(VAL0|STINTEN, mmio+INTEN0);
432 break;
433 default:
434 break;
435
436 }
437 return 0;
438
439 }
440
441 /*
442 This function initializes the device registers and starts the device.
443 */
444 static int amd8111e_restart(struct net_device *dev)
445 {
446 struct amd8111e_priv *lp = netdev_priv(dev);
447 void __iomem *mmio = lp->mmio;
448 int i,reg_val;
449
450 /* stop the chip */
451 writel(RUN, mmio + CMD0);
452
453 if(amd8111e_init_ring(dev))
454 return -ENOMEM;
455
456 /* enable the port manager and set auto negotiation always */
457 writel((u32) VAL1|EN_PMGR, mmio + CMD3 );
458 writel((u32)XPHYANE|XPHYRST , mmio + CTRL2);
459
460 amd8111e_set_ext_phy(dev);
461
462 /* set control registers */
463 reg_val = readl(mmio + CTRL1);
464 reg_val &= ~XMTSP_MASK;
465 writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 );
466
467 /* enable interrupt */
468 writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
469 APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
470 SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
471
472 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
473
474 /* initialize tx and rx ring base addresses */
475 writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0);
476 writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0);
477
478 writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
479 writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
480
481 /* set default IPG to 96 */
482 writew((u32)DEFAULT_IPG,mmio+IPG);
483 writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
484
485 if(lp->options & OPTION_JUMBO_ENABLE){
486 writel((u32)VAL2|JUMBO, mmio + CMD3);
487 /* Reset REX_UFLO */
488 writel( REX_UFLO, mmio + CMD2);
489 /* Should not set REX_UFLO for jumbo frames */
490 writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2);
491 }else{
492 writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2);
493 writel((u32)JUMBO, mmio + CMD3);
494 }
495
496 #if AMD8111E_VLAN_TAG_USED
497 writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3);
498 #endif
499 writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 );
500
501 /* Setting the MAC address to the device */
502 for(i = 0; i < ETH_ADDR_LEN; i++)
503 writeb( dev->dev_addr[i], mmio + PADR + i );
504
505 /* Enable interrupt coalesce */
506 if(lp->options & OPTION_INTR_COAL_ENABLE){
507 printk(KERN_INFO "%s: Interrupt Coalescing Enabled.\n",
508 dev->name);
509 amd8111e_set_coalesce(dev,ENABLE_COAL);
510 }
511
512 /* set RUN bit to start the chip */
513 writel(VAL2 | RDMD0, mmio + CMD0);
514 writel(VAL0 | INTREN | RUN, mmio + CMD0);
515
516 /* To avoid PCI posting bug */
517 readl(mmio+CMD0);
518 return 0;
519 }
520 /*
521 This function clears necessary the device registers.
522 */
523 static void amd8111e_init_hw_default( struct amd8111e_priv* lp)
524 {
525 unsigned int reg_val;
526 unsigned int logic_filter[2] ={0,};
527 void __iomem *mmio = lp->mmio;
528
529
530 /* stop the chip */
531 writel(RUN, mmio + CMD0);
532
533 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
534 writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
535
536 /* Clear RCV_RING_BASE_ADDR */
537 writel(0, mmio + RCV_RING_BASE_ADDR0);
538
539 /* Clear XMT_RING_BASE_ADDR */
540 writel(0, mmio + XMT_RING_BASE_ADDR0);
541 writel(0, mmio + XMT_RING_BASE_ADDR1);
542 writel(0, mmio + XMT_RING_BASE_ADDR2);
543 writel(0, mmio + XMT_RING_BASE_ADDR3);
544
545 /* Clear CMD0 */
546 writel(CMD0_CLEAR,mmio + CMD0);
547
548 /* Clear CMD2 */
549 writel(CMD2_CLEAR, mmio +CMD2);
550
551 /* Clear CMD7 */
552 writel(CMD7_CLEAR , mmio + CMD7);
553
554 /* Clear DLY_INT_A and DLY_INT_B */
555 writel(0x0, mmio + DLY_INT_A);
556 writel(0x0, mmio + DLY_INT_B);
557
558 /* Clear FLOW_CONTROL */
559 writel(0x0, mmio + FLOW_CONTROL);
560
561 /* Clear INT0 write 1 to clear register */
562 reg_val = readl(mmio + INT0);
563 writel(reg_val, mmio + INT0);
564
565 /* Clear STVAL */
566 writel(0x0, mmio + STVAL);
567
568 /* Clear INTEN0 */
569 writel( INTEN0_CLEAR, mmio + INTEN0);
570
571 /* Clear LADRF */
572 writel(0x0 , mmio + LADRF);
573
574 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
575 writel( 0x80010,mmio + SRAM_SIZE);
576
577 /* Clear RCV_RING0_LEN */
578 writel(0x0, mmio + RCV_RING_LEN0);
579
580 /* Clear XMT_RING0/1/2/3_LEN */
581 writel(0x0, mmio + XMT_RING_LEN0);
582 writel(0x0, mmio + XMT_RING_LEN1);
583 writel(0x0, mmio + XMT_RING_LEN2);
584 writel(0x0, mmio + XMT_RING_LEN3);
585
586 /* Clear XMT_RING_LIMIT */
587 writel(0x0, mmio + XMT_RING_LIMIT);
588
589 /* Clear MIB */
590 writew(MIB_CLEAR, mmio + MIB_ADDR);
591
592 /* Clear LARF */
593 amd8111e_writeq(*(u64*)logic_filter,mmio+LADRF);
594
595 /* SRAM_SIZE register */
596 reg_val = readl(mmio + SRAM_SIZE);
597
598 if(lp->options & OPTION_JUMBO_ENABLE)
599 writel( VAL2|JUMBO, mmio + CMD3);
600 #if AMD8111E_VLAN_TAG_USED
601 writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 );
602 #endif
603 /* Set default value to CTRL1 Register */
604 writel(CTRL1_DEFAULT, mmio + CTRL1);
605
606 /* To avoid PCI posting bug */
607 readl(mmio + CMD2);
608
609 }
610
611 /*
612 This function disables the interrupt and clears all the pending
613 interrupts in INT0
614 */
615 static void amd8111e_disable_interrupt(struct amd8111e_priv* lp)
616 {
617 u32 intr0;
618
619 /* Disable interrupt */
620 writel(INTREN, lp->mmio + CMD0);
621
622 /* Clear INT0 */
623 intr0 = readl(lp->mmio + INT0);
624 writel(intr0, lp->mmio + INT0);
625
626 /* To avoid PCI posting bug */
627 readl(lp->mmio + INT0);
628
629 }
630
631 /*
632 This function stops the chip.
633 */
634 static void amd8111e_stop_chip(struct amd8111e_priv* lp)
635 {
636 writel(RUN, lp->mmio + CMD0);
637
638 /* To avoid PCI posting bug */
639 readl(lp->mmio + CMD0);
640 }
641
642 /*
643 This function frees the transmiter and receiver descriptor rings.
644 */
645 static void amd8111e_free_ring(struct amd8111e_priv* lp)
646 {
647
648 /* Free transmit and receive skbs */
649 amd8111e_free_skbs(lp->amd8111e_net_dev);
650
651 /* Free transmit and receive descriptor rings */
652 if(lp->rx_ring){
653 pci_free_consistent(lp->pci_dev,
654 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
655 lp->rx_ring, lp->rx_ring_dma_addr);
656 lp->rx_ring = NULL;
657 }
658
659 if(lp->tx_ring){
660 pci_free_consistent(lp->pci_dev,
661 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
662 lp->tx_ring, lp->tx_ring_dma_addr);
663
664 lp->tx_ring = NULL;
665 }
666
667 }
668 #if AMD8111E_VLAN_TAG_USED
669 /*
670 This is the receive indication function for packets with vlan tag.
671 */
672 static int amd8111e_vlan_rx(struct amd8111e_priv *lp, struct sk_buff *skb, u16 vlan_tag)
673 {
674 return vlan_hwaccel_receive_skb(skb, lp->vlgrp,vlan_tag);
675 }
676 #endif
677
678 /*
679 This function will free all the transmit skbs that are actually transmitted by the device. It will check the ownership of the skb before freeing the skb.
680 */
681 static int amd8111e_tx(struct net_device *dev)
682 {
683 struct amd8111e_priv* lp = netdev_priv(dev);
684 int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
685 int status;
686 /* Complete all the transmit packet */
687 while (lp->tx_complete_idx != lp->tx_idx){
688 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
689 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
690
691 if(status & OWN_BIT)
692 break; /* It still hasn't been Txed */
693
694 lp->tx_ring[tx_index].buff_phy_addr = 0;
695
696 /* We must free the original skb */
697 if (lp->tx_skbuff[tx_index]) {
698 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
699 lp->tx_skbuff[tx_index]->len,
700 PCI_DMA_TODEVICE);
701 dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
702 lp->tx_skbuff[tx_index] = NULL;
703 lp->tx_dma_addr[tx_index] = 0;
704 }
705 lp->tx_complete_idx++;
706 /*COAL update tx coalescing parameters */
707 lp->coal_conf.tx_packets++;
708 lp->coal_conf.tx_bytes +=
709 le16_to_cpu(lp->tx_ring[tx_index].buff_count);
710
711 if (netif_queue_stopped(dev) &&
712 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
713 /* The ring is no longer full, clear tbusy. */
714 /* lp->tx_full = 0; */
715 netif_wake_queue (dev);
716 }
717 }
718 return 0;
719 }
720
721 /* This function handles the driver receive operation in polling mode */
722 static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
723 {
724 struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
725 struct net_device *dev = lp->amd8111e_net_dev;
726 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
727 void __iomem *mmio = lp->mmio;
728 struct sk_buff *skb,*new_skb;
729 int min_pkt_len, status;
730 unsigned int intr0;
731 int num_rx_pkt = 0;
732 short pkt_len;
733 #if AMD8111E_VLAN_TAG_USED
734 short vtag;
735 #endif
736 int rx_pkt_limit = budget;
737 unsigned long flags;
738
739 do{
740 /* process receive packets until we use the quota*/
741 /* If we own the next entry, it's a new packet. Send it up. */
742 while(1) {
743 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
744 if (status & OWN_BIT)
745 break;
746
747 /*
748 * There is a tricky error noted by John Murphy,
749 * <murf@perftech.com> to Russ Nelson: Even with
750 * full-sized * buffers it's possible for a
751 * jabber packet to use two buffers, with only
752 * the last correctly noting the error.
753 */
754
755 if(status & ERR_BIT) {
756 /* reseting flags */
757 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
758 goto err_next_pkt;
759 }
760 /* check for STP and ENP */
761 if(!((status & STP_BIT) && (status & ENP_BIT))){
762 /* reseting flags */
763 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
764 goto err_next_pkt;
765 }
766 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
767
768 #if AMD8111E_VLAN_TAG_USED
769 vtag = status & TT_MASK;
770 /*MAC will strip vlan tag*/
771 if(lp->vlgrp != NULL && vtag !=0)
772 min_pkt_len =MIN_PKT_LEN - 4;
773 else
774 #endif
775 min_pkt_len =MIN_PKT_LEN;
776
777 if (pkt_len < min_pkt_len) {
778 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
779 lp->drv_rx_errors++;
780 goto err_next_pkt;
781 }
782 if(--rx_pkt_limit < 0)
783 goto rx_not_empty;
784 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
785 /* if allocation fail,
786 ignore that pkt and go to next one */
787 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
788 lp->drv_rx_errors++;
789 goto err_next_pkt;
790 }
791
792 skb_reserve(new_skb, 2);
793 skb = lp->rx_skbuff[rx_index];
794 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
795 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
796 skb_put(skb, pkt_len);
797 lp->rx_skbuff[rx_index] = new_skb;
798 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
799 new_skb->data,
800 lp->rx_buff_len-2,
801 PCI_DMA_FROMDEVICE);
802
803 skb->protocol = eth_type_trans(skb, dev);
804
805 #if AMD8111E_VLAN_TAG_USED
806 if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
807 amd8111e_vlan_rx(lp, skb,
808 le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
809 } else
810 #endif
811 netif_receive_skb(skb);
812 /*COAL update rx coalescing parameters*/
813 lp->coal_conf.rx_packets++;
814 lp->coal_conf.rx_bytes += pkt_len;
815 num_rx_pkt++;
816 dev->last_rx = jiffies;
817
818 err_next_pkt:
819 lp->rx_ring[rx_index].buff_phy_addr
820 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
821 lp->rx_ring[rx_index].buff_count =
822 cpu_to_le16(lp->rx_buff_len-2);
823 wmb();
824 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
825 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
826 }
827 /* Check the interrupt status register for more packets in the
828 mean time. Process them since we have not used up our quota.*/
829
830 intr0 = readl(mmio + INT0);
831 /*Ack receive packets */
832 writel(intr0 & RINT0,mmio + INT0);
833
834 } while(intr0 & RINT0);
835
836 /* Receive descriptor is empty now */
837 spin_lock_irqsave(&lp->lock, flags);
838 __netif_rx_complete(dev, napi);
839 writel(VAL0|RINTEN0, mmio + INTEN0);
840 writel(VAL2 | RDMD0, mmio + CMD0);
841 spin_unlock_irqrestore(&lp->lock, flags);
842
843 rx_not_empty:
844 return num_rx_pkt;
845 }
846
847 /*
848 This function will indicate the link status to the kernel.
849 */
850 static int amd8111e_link_change(struct net_device* dev)
851 {
852 struct amd8111e_priv *lp = netdev_priv(dev);
853 int status0,speed;
854
855 /* read the link change */
856 status0 = readl(lp->mmio + STAT0);
857
858 if(status0 & LINK_STATS){
859 if(status0 & AUTONEG_COMPLETE)
860 lp->link_config.autoneg = AUTONEG_ENABLE;
861 else
862 lp->link_config.autoneg = AUTONEG_DISABLE;
863
864 if(status0 & FULL_DPLX)
865 lp->link_config.duplex = DUPLEX_FULL;
866 else
867 lp->link_config.duplex = DUPLEX_HALF;
868 speed = (status0 & SPEED_MASK) >> 7;
869 if(speed == PHY_SPEED_10)
870 lp->link_config.speed = SPEED_10;
871 else if(speed == PHY_SPEED_100)
872 lp->link_config.speed = SPEED_100;
873
874 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name,
875 (lp->link_config.speed == SPEED_100) ? "100": "10",
876 (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
877 netif_carrier_on(dev);
878 }
879 else{
880 lp->link_config.speed = SPEED_INVALID;
881 lp->link_config.duplex = DUPLEX_INVALID;
882 lp->link_config.autoneg = AUTONEG_INVALID;
883 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
884 netif_carrier_off(dev);
885 }
886
887 return 0;
888 }
889 /*
890 This function reads the mib counters.
891 */
892 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
893 {
894 unsigned int status;
895 unsigned int data;
896 unsigned int repeat = REPEAT_CNT;
897
898 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
899 do {
900 status = readw(mmio + MIB_ADDR);
901 udelay(2); /* controller takes MAX 2 us to get mib data */
902 }
903 while (--repeat && (status & MIB_CMD_ACTIVE));
904
905 data = readl(mmio + MIB_DATA);
906 return data;
907 }
908
909 /*
910 This function reads the mib registers and returns the hardware statistics. It updates previous internal driver statistics with new values.
911 */
912 static struct net_device_stats *amd8111e_get_stats(struct net_device * dev)
913 {
914 struct amd8111e_priv *lp = netdev_priv(dev);
915 void __iomem *mmio = lp->mmio;
916 unsigned long flags;
917 /* struct net_device_stats *prev_stats = &lp->prev_stats; */
918 struct net_device_stats* new_stats = &lp->stats;
919
920 if(!lp->opened)
921 return &lp->stats;
922 spin_lock_irqsave (&lp->lock, flags);
923
924 /* stats.rx_packets */
925 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
926 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
927 amd8111e_read_mib(mmio, rcv_unicast_pkts);
928
929 /* stats.tx_packets */
930 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
931
932 /*stats.rx_bytes */
933 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
934
935 /* stats.tx_bytes */
936 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
937
938 /* stats.rx_errors */
939 /* hw errors + errors driver reported */
940 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
941 amd8111e_read_mib(mmio, rcv_fragments)+
942 amd8111e_read_mib(mmio, rcv_jabbers)+
943 amd8111e_read_mib(mmio, rcv_alignment_errors)+
944 amd8111e_read_mib(mmio, rcv_fcs_errors)+
945 amd8111e_read_mib(mmio, rcv_miss_pkts)+
946 lp->drv_rx_errors;
947
948 /* stats.tx_errors */
949 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
950
951 /* stats.rx_dropped*/
952 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
953
954 /* stats.tx_dropped*/
955 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
956
957 /* stats.multicast*/
958 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
959
960 /* stats.collisions*/
961 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
962
963 /* stats.rx_length_errors*/
964 new_stats->rx_length_errors =
965 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
966 amd8111e_read_mib(mmio, rcv_oversize_pkts);
967
968 /* stats.rx_over_errors*/
969 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
970
971 /* stats.rx_crc_errors*/
972 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
973
974 /* stats.rx_frame_errors*/
975 new_stats->rx_frame_errors =
976 amd8111e_read_mib(mmio, rcv_alignment_errors);
977
978 /* stats.rx_fifo_errors */
979 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
980
981 /* stats.rx_missed_errors */
982 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
983
984 /* stats.tx_aborted_errors*/
985 new_stats->tx_aborted_errors =
986 amd8111e_read_mib(mmio, xmt_excessive_collision);
987
988 /* stats.tx_carrier_errors*/
989 new_stats->tx_carrier_errors =
990 amd8111e_read_mib(mmio, xmt_loss_carrier);
991
992 /* stats.tx_fifo_errors*/
993 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
994
995 /* stats.tx_window_errors*/
996 new_stats->tx_window_errors =
997 amd8111e_read_mib(mmio, xmt_late_collision);
998
999 /* Reset the mibs for collecting new statistics */
1000 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
1001
1002 spin_unlock_irqrestore (&lp->lock, flags);
1003
1004 return new_stats;
1005 }
1006 /* This function recalculate the interrupt coalescing mode on every interrupt
1007 according to the datarate and the packet rate.
1008 */
1009 static int amd8111e_calc_coalesce(struct net_device *dev)
1010 {
1011 struct amd8111e_priv *lp = netdev_priv(dev);
1012 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1013 int tx_pkt_rate;
1014 int rx_pkt_rate;
1015 int tx_data_rate;
1016 int rx_data_rate;
1017 int rx_pkt_size;
1018 int tx_pkt_size;
1019
1020 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1021 coal_conf->tx_prev_packets = coal_conf->tx_packets;
1022
1023 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1024 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
1025
1026 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1027 coal_conf->rx_prev_packets = coal_conf->rx_packets;
1028
1029 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1030 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
1031
1032 if(rx_pkt_rate < 800){
1033 if(coal_conf->rx_coal_type != NO_COALESCE){
1034
1035 coal_conf->rx_timeout = 0x0;
1036 coal_conf->rx_event_count = 0;
1037 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1038 coal_conf->rx_coal_type = NO_COALESCE;
1039 }
1040 }
1041 else{
1042
1043 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1044 if (rx_pkt_size < 128){
1045 if(coal_conf->rx_coal_type != NO_COALESCE){
1046
1047 coal_conf->rx_timeout = 0;
1048 coal_conf->rx_event_count = 0;
1049 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1050 coal_conf->rx_coal_type = NO_COALESCE;
1051 }
1052
1053 }
1054 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1055
1056 if(coal_conf->rx_coal_type != LOW_COALESCE){
1057 coal_conf->rx_timeout = 1;
1058 coal_conf->rx_event_count = 4;
1059 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1060 coal_conf->rx_coal_type = LOW_COALESCE;
1061 }
1062 }
1063 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1064
1065 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1066 coal_conf->rx_timeout = 1;
1067 coal_conf->rx_event_count = 4;
1068 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1069 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1070 }
1071
1072 }
1073 else if(rx_pkt_size >= 1024){
1074 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1075 coal_conf->rx_timeout = 2;
1076 coal_conf->rx_event_count = 3;
1077 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1078 coal_conf->rx_coal_type = HIGH_COALESCE;
1079 }
1080 }
1081 }
1082 /* NOW FOR TX INTR COALESC */
1083 if(tx_pkt_rate < 800){
1084 if(coal_conf->tx_coal_type != NO_COALESCE){
1085
1086 coal_conf->tx_timeout = 0x0;
1087 coal_conf->tx_event_count = 0;
1088 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1089 coal_conf->tx_coal_type = NO_COALESCE;
1090 }
1091 }
1092 else{
1093
1094 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1095 if (tx_pkt_size < 128){
1096
1097 if(coal_conf->tx_coal_type != NO_COALESCE){
1098
1099 coal_conf->tx_timeout = 0;
1100 coal_conf->tx_event_count = 0;
1101 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1102 coal_conf->tx_coal_type = NO_COALESCE;
1103 }
1104
1105 }
1106 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1107
1108 if(coal_conf->tx_coal_type != LOW_COALESCE){
1109 coal_conf->tx_timeout = 1;
1110 coal_conf->tx_event_count = 2;
1111 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1112 coal_conf->tx_coal_type = LOW_COALESCE;
1113
1114 }
1115 }
1116 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1117
1118 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1119 coal_conf->tx_timeout = 2;
1120 coal_conf->tx_event_count = 5;
1121 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1122 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1123 }
1124
1125 }
1126 else if(tx_pkt_size >= 1024){
1127 if (tx_pkt_size >= 1024){
1128 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1129 coal_conf->tx_timeout = 4;
1130 coal_conf->tx_event_count = 8;
1131 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1132 coal_conf->tx_coal_type = HIGH_COALESCE;
1133 }
1134 }
1135 }
1136 }
1137 return 0;
1138
1139 }
1140 /*
1141 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1142 */
1143 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1144 {
1145
1146 struct net_device * dev = (struct net_device *) dev_id;
1147 struct amd8111e_priv *lp = netdev_priv(dev);
1148 void __iomem *mmio = lp->mmio;
1149 unsigned int intr0, intren0;
1150 unsigned int handled = 1;
1151
1152 if(unlikely(dev == NULL))
1153 return IRQ_NONE;
1154
1155 spin_lock(&lp->lock);
1156
1157 /* disabling interrupt */
1158 writel(INTREN, mmio + CMD0);
1159
1160 /* Read interrupt status */
1161 intr0 = readl(mmio + INT0);
1162 intren0 = readl(mmio + INTEN0);
1163
1164 /* Process all the INT event until INTR bit is clear. */
1165
1166 if (!(intr0 & INTR)){
1167 handled = 0;
1168 goto err_no_interrupt;
1169 }
1170
1171 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1172 writel(intr0, mmio + INT0);
1173
1174 /* Check if Receive Interrupt has occurred. */
1175 if (intr0 & RINT0) {
1176 if (netif_rx_schedule_prep(dev, &lp->napi)) {
1177 /* Disable receive interupts */
1178 writel(RINTEN0, mmio + INTEN0);
1179 /* Schedule a polling routine */
1180 __netif_rx_schedule(dev, &lp->napi);
1181 } else if (intren0 & RINTEN0) {
1182 printk("************Driver bug! \
1183 interrupt while in poll\n");
1184 /* Fix by disable receive interrupts */
1185 writel(RINTEN0, mmio + INTEN0);
1186 }
1187 }
1188
1189 /* Check if Transmit Interrupt has occurred. */
1190 if (intr0 & TINT0)
1191 amd8111e_tx(dev);
1192
1193 /* Check if Link Change Interrupt has occurred. */
1194 if (intr0 & LCINT)
1195 amd8111e_link_change(dev);
1196
1197 /* Check if Hardware Timer Interrupt has occurred. */
1198 if (intr0 & STINT)
1199 amd8111e_calc_coalesce(dev);
1200
1201 err_no_interrupt:
1202 writel( VAL0 | INTREN,mmio + CMD0);
1203
1204 spin_unlock(&lp->lock);
1205
1206 return IRQ_RETVAL(handled);
1207 }
1208
1209 #ifdef CONFIG_NET_POLL_CONTROLLER
1210 static void amd8111e_poll(struct net_device *dev)
1211 {
1212 unsigned long flags;
1213 local_irq_save(flags);
1214 amd8111e_interrupt(0, dev);
1215 local_irq_restore(flags);
1216 }
1217 #endif
1218
1219
1220 /*
1221 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1222 */
1223 static int amd8111e_close(struct net_device * dev)
1224 {
1225 struct amd8111e_priv *lp = netdev_priv(dev);
1226 netif_stop_queue(dev);
1227
1228 napi_disable(&lp->napi);
1229
1230 spin_lock_irq(&lp->lock);
1231
1232 amd8111e_disable_interrupt(lp);
1233 amd8111e_stop_chip(lp);
1234 amd8111e_free_ring(lp);
1235
1236 netif_carrier_off(lp->amd8111e_net_dev);
1237
1238 /* Delete ipg timer */
1239 if(lp->options & OPTION_DYN_IPG_ENABLE)
1240 del_timer_sync(&lp->ipg_data.ipg_timer);
1241
1242 spin_unlock_irq(&lp->lock);
1243 free_irq(dev->irq, dev);
1244
1245 /* Update the statistics before closing */
1246 amd8111e_get_stats(dev);
1247 lp->opened = 0;
1248 return 0;
1249 }
1250 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1251 */
1252 static int amd8111e_open(struct net_device * dev )
1253 {
1254 struct amd8111e_priv *lp = netdev_priv(dev);
1255
1256 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1257 dev->name, dev))
1258 return -EAGAIN;
1259
1260 napi_enable(&lp->napi);
1261
1262 spin_lock_irq(&lp->lock);
1263
1264 amd8111e_init_hw_default(lp);
1265
1266 if(amd8111e_restart(dev)){
1267 spin_unlock_irq(&lp->lock);
1268 napi_disable(&lp->napi);
1269 if (dev->irq)
1270 free_irq(dev->irq, dev);
1271 return -ENOMEM;
1272 }
1273 /* Start ipg timer */
1274 if(lp->options & OPTION_DYN_IPG_ENABLE){
1275 add_timer(&lp->ipg_data.ipg_timer);
1276 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1277 }
1278
1279 lp->opened = 1;
1280
1281 spin_unlock_irq(&lp->lock);
1282
1283 netif_start_queue(dev);
1284
1285 return 0;
1286 }
1287 /*
1288 This function checks if there is any transmit descriptors available to queue more packet.
1289 */
1290 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1291 {
1292 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1293 if (lp->tx_skbuff[tx_index])
1294 return -1;
1295 else
1296 return 0;
1297
1298 }
1299 /*
1300 This function will queue the transmit packets to the descriptors and will trigger the send operation. It also initializes the transmit descriptors with buffer physical address, byte count, ownership to hardware etc.
1301 */
1302
1303 static int amd8111e_start_xmit(struct sk_buff *skb, struct net_device * dev)
1304 {
1305 struct amd8111e_priv *lp = netdev_priv(dev);
1306 int tx_index;
1307 unsigned long flags;
1308
1309 spin_lock_irqsave(&lp->lock, flags);
1310
1311 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1312
1313 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1314
1315 lp->tx_skbuff[tx_index] = skb;
1316 lp->tx_ring[tx_index].tx_flags = 0;
1317
1318 #if AMD8111E_VLAN_TAG_USED
1319 if((lp->vlgrp != NULL) && vlan_tx_tag_present(skb)){
1320 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1321 cpu_to_le16(TCC_VLAN_INSERT);
1322 lp->tx_ring[tx_index].tag_ctrl_info =
1323 cpu_to_le16(vlan_tx_tag_get(skb));
1324
1325 }
1326 #endif
1327 lp->tx_dma_addr[tx_index] =
1328 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1329 lp->tx_ring[tx_index].buff_phy_addr =
1330 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1331
1332 /* Set FCS and LTINT bits */
1333 wmb();
1334 lp->tx_ring[tx_index].tx_flags |=
1335 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1336
1337 lp->tx_idx++;
1338
1339 /* Trigger an immediate send poll. */
1340 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1341 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1342
1343 dev->trans_start = jiffies;
1344
1345 if(amd8111e_tx_queue_avail(lp) < 0){
1346 netif_stop_queue(dev);
1347 }
1348 spin_unlock_irqrestore(&lp->lock, flags);
1349 return 0;
1350 }
1351 /*
1352 This function returns all the memory mapped registers of the device.
1353 */
1354 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1355 {
1356 void __iomem *mmio = lp->mmio;
1357 /* Read only necessary registers */
1358 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1359 buf[1] = readl(mmio + XMT_RING_LEN0);
1360 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1361 buf[3] = readl(mmio + RCV_RING_LEN0);
1362 buf[4] = readl(mmio + CMD0);
1363 buf[5] = readl(mmio + CMD2);
1364 buf[6] = readl(mmio + CMD3);
1365 buf[7] = readl(mmio + CMD7);
1366 buf[8] = readl(mmio + INT0);
1367 buf[9] = readl(mmio + INTEN0);
1368 buf[10] = readl(mmio + LADRF);
1369 buf[11] = readl(mmio + LADRF+4);
1370 buf[12] = readl(mmio + STAT0);
1371 }
1372
1373
1374 /*
1375 This function sets promiscuos mode, all-multi mode or the multicast address
1376 list to the device.
1377 */
1378 static void amd8111e_set_multicast_list(struct net_device *dev)
1379 {
1380 struct dev_mc_list* mc_ptr;
1381 struct amd8111e_priv *lp = netdev_priv(dev);
1382 u32 mc_filter[2] ;
1383 int i,bit_num;
1384 if(dev->flags & IFF_PROMISC){
1385 writel( VAL2 | PROM, lp->mmio + CMD2);
1386 return;
1387 }
1388 else
1389 writel( PROM, lp->mmio + CMD2);
1390 if(dev->flags & IFF_ALLMULTI || dev->mc_count > MAX_FILTER_SIZE){
1391 /* get all multicast packet */
1392 mc_filter[1] = mc_filter[0] = 0xffffffff;
1393 lp->mc_list = dev->mc_list;
1394 lp->options |= OPTION_MULTICAST_ENABLE;
1395 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1396 return;
1397 }
1398 if( dev->mc_count == 0 ){
1399 /* get only own packets */
1400 mc_filter[1] = mc_filter[0] = 0;
1401 lp->mc_list = NULL;
1402 lp->options &= ~OPTION_MULTICAST_ENABLE;
1403 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1404 /* disable promiscous mode */
1405 writel(PROM, lp->mmio + CMD2);
1406 return;
1407 }
1408 /* load all the multicast addresses in the logic filter */
1409 lp->options |= OPTION_MULTICAST_ENABLE;
1410 lp->mc_list = dev->mc_list;
1411 mc_filter[1] = mc_filter[0] = 0;
1412 for (i = 0, mc_ptr = dev->mc_list; mc_ptr && i < dev->mc_count;
1413 i++, mc_ptr = mc_ptr->next) {
1414 bit_num = (ether_crc_le(ETH_ALEN, mc_ptr->dmi_addr) >> 26) & 0x3f;
1415 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1416 }
1417 amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1418
1419 /* To eliminate PCI posting bug */
1420 readl(lp->mmio + CMD2);
1421
1422 }
1423
1424 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1425 {
1426 struct amd8111e_priv *lp = netdev_priv(dev);
1427 struct pci_dev *pci_dev = lp->pci_dev;
1428 strcpy (info->driver, MODULE_NAME);
1429 strcpy (info->version, MODULE_VERS);
1430 sprintf(info->fw_version,"%u",chip_version);
1431 strcpy (info->bus_info, pci_name(pci_dev));
1432 }
1433
1434 static int amd8111e_get_regs_len(struct net_device *dev)
1435 {
1436 return AMD8111E_REG_DUMP_LEN;
1437 }
1438
1439 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1440 {
1441 struct amd8111e_priv *lp = netdev_priv(dev);
1442 regs->version = 0;
1443 amd8111e_read_regs(lp, buf);
1444 }
1445
1446 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1447 {
1448 struct amd8111e_priv *lp = netdev_priv(dev);
1449 spin_lock_irq(&lp->lock);
1450 mii_ethtool_gset(&lp->mii_if, ecmd);
1451 spin_unlock_irq(&lp->lock);
1452 return 0;
1453 }
1454
1455 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1456 {
1457 struct amd8111e_priv *lp = netdev_priv(dev);
1458 int res;
1459 spin_lock_irq(&lp->lock);
1460 res = mii_ethtool_sset(&lp->mii_if, ecmd);
1461 spin_unlock_irq(&lp->lock);
1462 return res;
1463 }
1464
1465 static int amd8111e_nway_reset(struct net_device *dev)
1466 {
1467 struct amd8111e_priv *lp = netdev_priv(dev);
1468 return mii_nway_restart(&lp->mii_if);
1469 }
1470
1471 static u32 amd8111e_get_link(struct net_device *dev)
1472 {
1473 struct amd8111e_priv *lp = netdev_priv(dev);
1474 return mii_link_ok(&lp->mii_if);
1475 }
1476
1477 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1478 {
1479 struct amd8111e_priv *lp = netdev_priv(dev);
1480 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1481 if (lp->options & OPTION_WOL_ENABLE)
1482 wol_info->wolopts = WAKE_MAGIC;
1483 }
1484
1485 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1486 {
1487 struct amd8111e_priv *lp = netdev_priv(dev);
1488 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1489 return -EINVAL;
1490 spin_lock_irq(&lp->lock);
1491 if (wol_info->wolopts & WAKE_MAGIC)
1492 lp->options |=
1493 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1494 else if(wol_info->wolopts & WAKE_PHY)
1495 lp->options |=
1496 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1497 else
1498 lp->options &= ~OPTION_WOL_ENABLE;
1499 spin_unlock_irq(&lp->lock);
1500 return 0;
1501 }
1502
1503 static const struct ethtool_ops ops = {
1504 .get_drvinfo = amd8111e_get_drvinfo,
1505 .get_regs_len = amd8111e_get_regs_len,
1506 .get_regs = amd8111e_get_regs,
1507 .get_settings = amd8111e_get_settings,
1508 .set_settings = amd8111e_set_settings,
1509 .nway_reset = amd8111e_nway_reset,
1510 .get_link = amd8111e_get_link,
1511 .get_wol = amd8111e_get_wol,
1512 .set_wol = amd8111e_set_wol,
1513 };
1514
1515 /*
1516 This function handles all the ethtool ioctls. It gives driver info, gets/sets driver speed, gets memory mapped register values, forces auto negotiation, sets/gets WOL options for ethtool application.
1517 */
1518
1519 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1520 {
1521 struct mii_ioctl_data *data = if_mii(ifr);
1522 struct amd8111e_priv *lp = netdev_priv(dev);
1523 int err;
1524 u32 mii_regval;
1525
1526 if (!capable(CAP_NET_ADMIN))
1527 return -EPERM;
1528
1529 switch(cmd) {
1530 case SIOCGMIIPHY:
1531 data->phy_id = lp->ext_phy_addr;
1532
1533 /* fallthru */
1534 case SIOCGMIIREG:
1535
1536 spin_lock_irq(&lp->lock);
1537 err = amd8111e_read_phy(lp, data->phy_id,
1538 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1539 spin_unlock_irq(&lp->lock);
1540
1541 data->val_out = mii_regval;
1542 return err;
1543
1544 case SIOCSMIIREG:
1545
1546 spin_lock_irq(&lp->lock);
1547 err = amd8111e_write_phy(lp, data->phy_id,
1548 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1549 spin_unlock_irq(&lp->lock);
1550
1551 return err;
1552
1553 default:
1554 /* do nothing */
1555 break;
1556 }
1557 return -EOPNOTSUPP;
1558 }
1559 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1560 {
1561 struct amd8111e_priv *lp = netdev_priv(dev);
1562 int i;
1563 struct sockaddr *addr = p;
1564
1565 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1566 spin_lock_irq(&lp->lock);
1567 /* Setting the MAC address to the device */
1568 for(i = 0; i < ETH_ADDR_LEN; i++)
1569 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1570
1571 spin_unlock_irq(&lp->lock);
1572
1573 return 0;
1574 }
1575
1576 /*
1577 This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers.
1578 */
1579 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1580 {
1581 struct amd8111e_priv *lp = netdev_priv(dev);
1582 int err;
1583
1584 if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1585 return -EINVAL;
1586
1587 if (!netif_running(dev)) {
1588 /* new_mtu will be used
1589 when device starts netxt time */
1590 dev->mtu = new_mtu;
1591 return 0;
1592 }
1593
1594 spin_lock_irq(&lp->lock);
1595
1596 /* stop the chip */
1597 writel(RUN, lp->mmio + CMD0);
1598
1599 dev->mtu = new_mtu;
1600
1601 err = amd8111e_restart(dev);
1602 spin_unlock_irq(&lp->lock);
1603 if(!err)
1604 netif_start_queue(dev);
1605 return err;
1606 }
1607
1608 #if AMD8111E_VLAN_TAG_USED
1609 static void amd8111e_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1610 {
1611 struct amd8111e_priv *lp = netdev_priv(dev);
1612 spin_lock_irq(&lp->lock);
1613 lp->vlgrp = grp;
1614 spin_unlock_irq(&lp->lock);
1615 }
1616 #endif
1617
1618 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1619 {
1620 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1621 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1622
1623 /* To eliminate PCI posting bug */
1624 readl(lp->mmio + CMD7);
1625 return 0;
1626 }
1627
1628 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1629 {
1630
1631 /* Adapter is already stoped/suspended/interrupt-disabled */
1632 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1633
1634 /* To eliminate PCI posting bug */
1635 readl(lp->mmio + CMD7);
1636 return 0;
1637 }
1638 /* This function is called when a packet transmission fails to complete within a resonable period, on the assumption that an interrupts have been failed or the interface is locked up. This function will reinitialize the hardware */
1639
1640 static void amd8111e_tx_timeout(struct net_device *dev)
1641 {
1642 struct amd8111e_priv* lp = netdev_priv(dev);
1643 int err;
1644
1645 printk(KERN_ERR "%s: transmit timed out, resetting\n",
1646 dev->name);
1647 spin_lock_irq(&lp->lock);
1648 err = amd8111e_restart(dev);
1649 spin_unlock_irq(&lp->lock);
1650 if(!err)
1651 netif_wake_queue(dev);
1652 }
1653 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1654 {
1655 struct net_device *dev = pci_get_drvdata(pci_dev);
1656 struct amd8111e_priv *lp = netdev_priv(dev);
1657
1658 if (!netif_running(dev))
1659 return 0;
1660
1661 /* disable the interrupt */
1662 spin_lock_irq(&lp->lock);
1663 amd8111e_disable_interrupt(lp);
1664 spin_unlock_irq(&lp->lock);
1665
1666 netif_device_detach(dev);
1667
1668 /* stop chip */
1669 spin_lock_irq(&lp->lock);
1670 if(lp->options & OPTION_DYN_IPG_ENABLE)
1671 del_timer_sync(&lp->ipg_data.ipg_timer);
1672 amd8111e_stop_chip(lp);
1673 spin_unlock_irq(&lp->lock);
1674
1675 if(lp->options & OPTION_WOL_ENABLE){
1676 /* enable wol */
1677 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1678 amd8111e_enable_magicpkt(lp);
1679 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1680 amd8111e_enable_link_change(lp);
1681
1682 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1683 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1684
1685 }
1686 else{
1687 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1688 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1689 }
1690
1691 pci_save_state(pci_dev);
1692 pci_set_power_state(pci_dev, PCI_D3hot);
1693
1694 return 0;
1695 }
1696 static int amd8111e_resume(struct pci_dev *pci_dev)
1697 {
1698 struct net_device *dev = pci_get_drvdata(pci_dev);
1699 struct amd8111e_priv *lp = netdev_priv(dev);
1700
1701 if (!netif_running(dev))
1702 return 0;
1703
1704 pci_set_power_state(pci_dev, PCI_D0);
1705 pci_restore_state(pci_dev);
1706
1707 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1708 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1709
1710 netif_device_attach(dev);
1711
1712 spin_lock_irq(&lp->lock);
1713 amd8111e_restart(dev);
1714 /* Restart ipg timer */
1715 if(lp->options & OPTION_DYN_IPG_ENABLE)
1716 mod_timer(&lp->ipg_data.ipg_timer,
1717 jiffies + IPG_CONVERGE_JIFFIES);
1718 spin_unlock_irq(&lp->lock);
1719
1720 return 0;
1721 }
1722
1723
1724 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1725 {
1726 struct net_device *dev = pci_get_drvdata(pdev);
1727 if (dev) {
1728 unregister_netdev(dev);
1729 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1730 free_netdev(dev);
1731 pci_release_regions(pdev);
1732 pci_disable_device(pdev);
1733 pci_set_drvdata(pdev, NULL);
1734 }
1735 }
1736 static void amd8111e_config_ipg(struct net_device* dev)
1737 {
1738 struct amd8111e_priv *lp = netdev_priv(dev);
1739 struct ipg_info* ipg_data = &lp->ipg_data;
1740 void __iomem *mmio = lp->mmio;
1741 unsigned int prev_col_cnt = ipg_data->col_cnt;
1742 unsigned int total_col_cnt;
1743 unsigned int tmp_ipg;
1744
1745 if(lp->link_config.duplex == DUPLEX_FULL){
1746 ipg_data->ipg = DEFAULT_IPG;
1747 return;
1748 }
1749
1750 if(ipg_data->ipg_state == SSTATE){
1751
1752 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1753
1754 ipg_data->timer_tick = 0;
1755 ipg_data->ipg = MIN_IPG - IPG_STEP;
1756 ipg_data->current_ipg = MIN_IPG;
1757 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1758 ipg_data->ipg_state = CSTATE;
1759 }
1760 else
1761 ipg_data->timer_tick++;
1762 }
1763
1764 if(ipg_data->ipg_state == CSTATE){
1765
1766 /* Get the current collision count */
1767
1768 total_col_cnt = ipg_data->col_cnt =
1769 amd8111e_read_mib(mmio, xmt_collisions);
1770
1771 if ((total_col_cnt - prev_col_cnt) <
1772 (ipg_data->diff_col_cnt)){
1773
1774 ipg_data->diff_col_cnt =
1775 total_col_cnt - prev_col_cnt ;
1776
1777 ipg_data->ipg = ipg_data->current_ipg;
1778 }
1779
1780 ipg_data->current_ipg += IPG_STEP;
1781
1782 if (ipg_data->current_ipg <= MAX_IPG)
1783 tmp_ipg = ipg_data->current_ipg;
1784 else{
1785 tmp_ipg = ipg_data->ipg;
1786 ipg_data->ipg_state = SSTATE;
1787 }
1788 writew((u32)tmp_ipg, mmio + IPG);
1789 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1790 }
1791 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1792 return;
1793
1794 }
1795
1796 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1797 {
1798 struct amd8111e_priv *lp = netdev_priv(dev);
1799 int i;
1800
1801 for (i = 0x1e; i >= 0; i--) {
1802 u32 id1, id2;
1803
1804 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1805 continue;
1806 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1807 continue;
1808 lp->ext_phy_id = (id1 << 16) | id2;
1809 lp->ext_phy_addr = i;
1810 return;
1811 }
1812 lp->ext_phy_id = 0;
1813 lp->ext_phy_addr = 1;
1814 }
1815
1816 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1817 const struct pci_device_id *ent)
1818 {
1819 int err,i,pm_cap;
1820 unsigned long reg_addr,reg_len;
1821 struct amd8111e_priv* lp;
1822 struct net_device* dev;
1823
1824 err = pci_enable_device(pdev);
1825 if(err){
1826 printk(KERN_ERR "amd8111e: Cannot enable new PCI device, "
1827 "exiting.\n");
1828 return err;
1829 }
1830
1831 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1832 printk(KERN_ERR "amd8111e: Cannot find PCI base address, "
1833 "exiting.\n");
1834 err = -ENODEV;
1835 goto err_disable_pdev;
1836 }
1837
1838 err = pci_request_regions(pdev, MODULE_NAME);
1839 if(err){
1840 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1841 "exiting.\n");
1842 goto err_disable_pdev;
1843 }
1844
1845 pci_set_master(pdev);
1846
1847 /* Find power-management capability. */
1848 if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
1849 printk(KERN_ERR "amd8111e: No Power Management capability, "
1850 "exiting.\n");
1851 goto err_free_reg;
1852 }
1853
1854 /* Initialize DMA */
1855 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) < 0) {
1856 printk(KERN_ERR "amd8111e: DMA not supported,"
1857 "exiting.\n");
1858 goto err_free_reg;
1859 }
1860
1861 reg_addr = pci_resource_start(pdev, 0);
1862 reg_len = pci_resource_len(pdev, 0);
1863
1864 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1865 if (!dev) {
1866 printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n");
1867 err = -ENOMEM;
1868 goto err_free_reg;
1869 }
1870
1871 SET_NETDEV_DEV(dev, &pdev->dev);
1872
1873 #if AMD8111E_VLAN_TAG_USED
1874 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
1875 dev->vlan_rx_register =amd8111e_vlan_rx_register;
1876 #endif
1877
1878 lp = netdev_priv(dev);
1879 lp->pci_dev = pdev;
1880 lp->amd8111e_net_dev = dev;
1881 lp->pm_cap = pm_cap;
1882
1883 spin_lock_init(&lp->lock);
1884
1885 lp->mmio = ioremap(reg_addr, reg_len);
1886 if (!lp->mmio) {
1887 printk(KERN_ERR "amd8111e: Cannot map device registers, "
1888 "exiting\n");
1889 err = -ENOMEM;
1890 goto err_free_dev;
1891 }
1892
1893 /* Initializing MAC address */
1894 for(i = 0; i < ETH_ADDR_LEN; i++)
1895 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1896
1897 /* Setting user defined parametrs */
1898 lp->ext_phy_option = speed_duplex[card_idx];
1899 if(coalesce[card_idx])
1900 lp->options |= OPTION_INTR_COAL_ENABLE;
1901 if(dynamic_ipg[card_idx++])
1902 lp->options |= OPTION_DYN_IPG_ENABLE;
1903
1904 /* Initialize driver entry points */
1905 dev->open = amd8111e_open;
1906 dev->hard_start_xmit = amd8111e_start_xmit;
1907 dev->stop = amd8111e_close;
1908 dev->get_stats = amd8111e_get_stats;
1909 dev->set_multicast_list = amd8111e_set_multicast_list;
1910 dev->set_mac_address = amd8111e_set_mac_address;
1911 dev->do_ioctl = amd8111e_ioctl;
1912 dev->change_mtu = amd8111e_change_mtu;
1913 SET_ETHTOOL_OPS(dev, &ops);
1914 dev->irq =pdev->irq;
1915 dev->tx_timeout = amd8111e_tx_timeout;
1916 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1917 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1918 #ifdef CONFIG_NET_POLL_CONTROLLER
1919 dev->poll_controller = amd8111e_poll;
1920 #endif
1921
1922 #if AMD8111E_VLAN_TAG_USED
1923 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1924 dev->vlan_rx_register =amd8111e_vlan_rx_register;
1925 #endif
1926 /* Probe the external PHY */
1927 amd8111e_probe_ext_phy(dev);
1928
1929 /* setting mii default values */
1930 lp->mii_if.dev = dev;
1931 lp->mii_if.mdio_read = amd8111e_mdio_read;
1932 lp->mii_if.mdio_write = amd8111e_mdio_write;
1933 lp->mii_if.phy_id = lp->ext_phy_addr;
1934
1935 /* Set receive buffer length and set jumbo option*/
1936 amd8111e_set_rx_buff_len(dev);
1937
1938
1939 err = register_netdev(dev);
1940 if (err) {
1941 printk(KERN_ERR "amd8111e: Cannot register net device, "
1942 "exiting.\n");
1943 goto err_iounmap;
1944 }
1945
1946 pci_set_drvdata(pdev, dev);
1947
1948 /* Initialize software ipg timer */
1949 if(lp->options & OPTION_DYN_IPG_ENABLE){
1950 init_timer(&lp->ipg_data.ipg_timer);
1951 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
1952 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
1953 lp->ipg_data.ipg_timer.expires = jiffies +
1954 IPG_CONVERGE_JIFFIES;
1955 lp->ipg_data.ipg = DEFAULT_IPG;
1956 lp->ipg_data.ipg_state = CSTATE;
1957 };
1958
1959 /* display driver and device information */
1960
1961 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1962 printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n",
1963 dev->name,MODULE_VERS);
1964 printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1965 dev->name, chip_version, dev->dev_addr);
1966 if (lp->ext_phy_id)
1967 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
1968 dev->name, lp->ext_phy_id, lp->ext_phy_addr);
1969 else
1970 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
1971 dev->name);
1972 return 0;
1973 err_iounmap:
1974 iounmap(lp->mmio);
1975
1976 err_free_dev:
1977 free_netdev(dev);
1978
1979 err_free_reg:
1980 pci_release_regions(pdev);
1981
1982 err_disable_pdev:
1983 pci_disable_device(pdev);
1984 pci_set_drvdata(pdev, NULL);
1985 return err;
1986
1987 }
1988
1989 static struct pci_driver amd8111e_driver = {
1990 .name = MODULE_NAME,
1991 .id_table = amd8111e_pci_tbl,
1992 .probe = amd8111e_probe_one,
1993 .remove = __devexit_p(amd8111e_remove_one),
1994 .suspend = amd8111e_suspend,
1995 .resume = amd8111e_resume
1996 };
1997
1998 static int __init amd8111e_init(void)
1999 {
2000 return pci_register_driver(&amd8111e_driver);
2001 }
2002
2003 static void __exit amd8111e_cleanup(void)
2004 {
2005 pci_unregister_driver(&amd8111e_driver);
2006 }
2007
2008 module_init(amd8111e_init);
2009 module_exit(amd8111e_cleanup);
Linux kernel - Deliverables
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