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Merge branch 'perf/urgent'
[linux-2.6/x86.git] / drivers / net / amd8111e.c
blob78002ef9c0e56f13a7bcc0a0a5fce56fc4bbb2ad
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/delay.h>
77 #include <linux/init.h>
78 #include <linux/interrupt.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 Negotiate, 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 DEFINE_PCI_DEVICE_TABLE(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 /* Free transmit and receive descriptor rings */
648 if(lp->rx_ring){
649 pci_free_consistent(lp->pci_dev,
650 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
651 lp->rx_ring, lp->rx_ring_dma_addr);
652 lp->rx_ring = NULL;
653 }
654
655 if(lp->tx_ring){
656 pci_free_consistent(lp->pci_dev,
657 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
658 lp->tx_ring, lp->tx_ring_dma_addr);
659
660 lp->tx_ring = NULL;
661 }
662
663 }
664
665 /*
666 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.
667 */
668 static int amd8111e_tx(struct net_device *dev)
669 {
670 struct amd8111e_priv* lp = netdev_priv(dev);
671 int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
672 int status;
673 /* Complete all the transmit packet */
674 while (lp->tx_complete_idx != lp->tx_idx){
675 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
676 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
677
678 if(status & OWN_BIT)
679 break; /* It still hasn't been Txed */
680
681 lp->tx_ring[tx_index].buff_phy_addr = 0;
682
683 /* We must free the original skb */
684 if (lp->tx_skbuff[tx_index]) {
685 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
686 lp->tx_skbuff[tx_index]->len,
687 PCI_DMA_TODEVICE);
688 dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
689 lp->tx_skbuff[tx_index] = NULL;
690 lp->tx_dma_addr[tx_index] = 0;
691 }
692 lp->tx_complete_idx++;
693 /*COAL update tx coalescing parameters */
694 lp->coal_conf.tx_packets++;
695 lp->coal_conf.tx_bytes +=
696 le16_to_cpu(lp->tx_ring[tx_index].buff_count);
697
698 if (netif_queue_stopped(dev) &&
699 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
700 /* The ring is no longer full, clear tbusy. */
701 /* lp->tx_full = 0; */
702 netif_wake_queue (dev);
703 }
704 }
705 return 0;
706 }
707
708 /* This function handles the driver receive operation in polling mode */
709 static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
710 {
711 struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
712 struct net_device *dev = lp->amd8111e_net_dev;
713 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
714 void __iomem *mmio = lp->mmio;
715 struct sk_buff *skb,*new_skb;
716 int min_pkt_len, status;
717 unsigned int intr0;
718 int num_rx_pkt = 0;
719 short pkt_len;
720 #if AMD8111E_VLAN_TAG_USED
721 short vtag;
722 #endif
723 int rx_pkt_limit = budget;
724 unsigned long flags;
725
726 do{
727 /* process receive packets until we use the quota*/
728 /* If we own the next entry, it's a new packet. Send it up. */
729 while(1) {
730 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
731 if (status & OWN_BIT)
732 break;
733
734 /*
735 * There is a tricky error noted by John Murphy,
736 * <murf@perftech.com> to Russ Nelson: Even with
737 * full-sized * buffers it's possible for a
738 * jabber packet to use two buffers, with only
739 * the last correctly noting the error.
740 */
741
742 if(status & ERR_BIT) {
743 /* reseting flags */
744 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
745 goto err_next_pkt;
746 }
747 /* check for STP and ENP */
748 if(!((status & STP_BIT) && (status & ENP_BIT))){
749 /* reseting flags */
750 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
751 goto err_next_pkt;
752 }
753 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
754
755 #if AMD8111E_VLAN_TAG_USED
756 vtag = status & TT_MASK;
757 /*MAC will strip vlan tag*/
758 if (vtag != 0)
759 min_pkt_len =MIN_PKT_LEN - 4;
760 else
761 #endif
762 min_pkt_len =MIN_PKT_LEN;
763
764 if (pkt_len < min_pkt_len) {
765 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
766 lp->drv_rx_errors++;
767 goto err_next_pkt;
768 }
769 if(--rx_pkt_limit < 0)
770 goto rx_not_empty;
771 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
772 /* if allocation fail,
773 ignore that pkt and go to next one */
774 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
775 lp->drv_rx_errors++;
776 goto err_next_pkt;
777 }
778
779 skb_reserve(new_skb, 2);
780 skb = lp->rx_skbuff[rx_index];
781 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
782 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
783 skb_put(skb, pkt_len);
784 lp->rx_skbuff[rx_index] = new_skb;
785 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
786 new_skb->data,
787 lp->rx_buff_len-2,
788 PCI_DMA_FROMDEVICE);
789
790 skb->protocol = eth_type_trans(skb, dev);
791
792 #if AMD8111E_VLAN_TAG_USED
793 if (vtag == TT_VLAN_TAGGED){
794 u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
795 __vlan_hwaccel_put_tag(skb, vlan_tag);
796 }
797 #endif
798 netif_receive_skb(skb);
799 /*COAL update rx coalescing parameters*/
800 lp->coal_conf.rx_packets++;
801 lp->coal_conf.rx_bytes += pkt_len;
802 num_rx_pkt++;
803
804 err_next_pkt:
805 lp->rx_ring[rx_index].buff_phy_addr
806 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
807 lp->rx_ring[rx_index].buff_count =
808 cpu_to_le16(lp->rx_buff_len-2);
809 wmb();
810 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
811 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
812 }
813 /* Check the interrupt status register for more packets in the
814 mean time. Process them since we have not used up our quota.*/
815
816 intr0 = readl(mmio + INT0);
817 /*Ack receive packets */
818 writel(intr0 & RINT0,mmio + INT0);
819
820 } while(intr0 & RINT0);
821
822 if (rx_pkt_limit > 0) {
823 /* Receive descriptor is empty now */
824 spin_lock_irqsave(&lp->lock, flags);
825 __napi_complete(napi);
826 writel(VAL0|RINTEN0, mmio + INTEN0);
827 writel(VAL2 | RDMD0, mmio + CMD0);
828 spin_unlock_irqrestore(&lp->lock, flags);
829 }
830
831 rx_not_empty:
832 return num_rx_pkt;
833 }
834
835 /*
836 This function will indicate the link status to the kernel.
837 */
838 static int amd8111e_link_change(struct net_device* dev)
839 {
840 struct amd8111e_priv *lp = netdev_priv(dev);
841 int status0,speed;
842
843 /* read the link change */
844 status0 = readl(lp->mmio + STAT0);
845
846 if(status0 & LINK_STATS){
847 if(status0 & AUTONEG_COMPLETE)
848 lp->link_config.autoneg = AUTONEG_ENABLE;
849 else
850 lp->link_config.autoneg = AUTONEG_DISABLE;
851
852 if(status0 & FULL_DPLX)
853 lp->link_config.duplex = DUPLEX_FULL;
854 else
855 lp->link_config.duplex = DUPLEX_HALF;
856 speed = (status0 & SPEED_MASK) >> 7;
857 if(speed == PHY_SPEED_10)
858 lp->link_config.speed = SPEED_10;
859 else if(speed == PHY_SPEED_100)
860 lp->link_config.speed = SPEED_100;
861
862 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name,
863 (lp->link_config.speed == SPEED_100) ? "100": "10",
864 (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
865 netif_carrier_on(dev);
866 }
867 else{
868 lp->link_config.speed = SPEED_INVALID;
869 lp->link_config.duplex = DUPLEX_INVALID;
870 lp->link_config.autoneg = AUTONEG_INVALID;
871 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
872 netif_carrier_off(dev);
873 }
874
875 return 0;
876 }
877 /*
878 This function reads the mib counters.
879 */
880 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
881 {
882 unsigned int status;
883 unsigned int data;
884 unsigned int repeat = REPEAT_CNT;
885
886 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
887 do {
888 status = readw(mmio + MIB_ADDR);
889 udelay(2); /* controller takes MAX 2 us to get mib data */
890 }
891 while (--repeat && (status & MIB_CMD_ACTIVE));
892
893 data = readl(mmio + MIB_DATA);
894 return data;
895 }
896
897 /*
898 * This function reads the mib registers and returns the hardware statistics.
899 * It updates previous internal driver statistics with new values.
900 */
901 static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
902 {
903 struct amd8111e_priv *lp = netdev_priv(dev);
904 void __iomem *mmio = lp->mmio;
905 unsigned long flags;
906 struct net_device_stats *new_stats = &dev->stats;
907
908 if (!lp->opened)
909 return new_stats;
910 spin_lock_irqsave (&lp->lock, flags);
911
912 /* stats.rx_packets */
913 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
914 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
915 amd8111e_read_mib(mmio, rcv_unicast_pkts);
916
917 /* stats.tx_packets */
918 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
919
920 /*stats.rx_bytes */
921 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
922
923 /* stats.tx_bytes */
924 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
925
926 /* stats.rx_errors */
927 /* hw errors + errors driver reported */
928 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
929 amd8111e_read_mib(mmio, rcv_fragments)+
930 amd8111e_read_mib(mmio, rcv_jabbers)+
931 amd8111e_read_mib(mmio, rcv_alignment_errors)+
932 amd8111e_read_mib(mmio, rcv_fcs_errors)+
933 amd8111e_read_mib(mmio, rcv_miss_pkts)+
934 lp->drv_rx_errors;
935
936 /* stats.tx_errors */
937 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
938
939 /* stats.rx_dropped*/
940 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
941
942 /* stats.tx_dropped*/
943 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
944
945 /* stats.multicast*/
946 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
947
948 /* stats.collisions*/
949 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
950
951 /* stats.rx_length_errors*/
952 new_stats->rx_length_errors =
953 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
954 amd8111e_read_mib(mmio, rcv_oversize_pkts);
955
956 /* stats.rx_over_errors*/
957 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
958
959 /* stats.rx_crc_errors*/
960 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
961
962 /* stats.rx_frame_errors*/
963 new_stats->rx_frame_errors =
964 amd8111e_read_mib(mmio, rcv_alignment_errors);
965
966 /* stats.rx_fifo_errors */
967 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
968
969 /* stats.rx_missed_errors */
970 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
971
972 /* stats.tx_aborted_errors*/
973 new_stats->tx_aborted_errors =
974 amd8111e_read_mib(mmio, xmt_excessive_collision);
975
976 /* stats.tx_carrier_errors*/
977 new_stats->tx_carrier_errors =
978 amd8111e_read_mib(mmio, xmt_loss_carrier);
979
980 /* stats.tx_fifo_errors*/
981 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
982
983 /* stats.tx_window_errors*/
984 new_stats->tx_window_errors =
985 amd8111e_read_mib(mmio, xmt_late_collision);
986
987 /* Reset the mibs for collecting new statistics */
988 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
989
990 spin_unlock_irqrestore (&lp->lock, flags);
991
992 return new_stats;
993 }
994 /* This function recalculate the interrupt coalescing mode on every interrupt
995 according to the datarate and the packet rate.
996 */
997 static int amd8111e_calc_coalesce(struct net_device *dev)
998 {
999 struct amd8111e_priv *lp = netdev_priv(dev);
1000 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1001 int tx_pkt_rate;
1002 int rx_pkt_rate;
1003 int tx_data_rate;
1004 int rx_data_rate;
1005 int rx_pkt_size;
1006 int tx_pkt_size;
1007
1008 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1009 coal_conf->tx_prev_packets = coal_conf->tx_packets;
1010
1011 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1012 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
1013
1014 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1015 coal_conf->rx_prev_packets = coal_conf->rx_packets;
1016
1017 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1018 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
1019
1020 if(rx_pkt_rate < 800){
1021 if(coal_conf->rx_coal_type != NO_COALESCE){
1022
1023 coal_conf->rx_timeout = 0x0;
1024 coal_conf->rx_event_count = 0;
1025 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1026 coal_conf->rx_coal_type = NO_COALESCE;
1027 }
1028 }
1029 else{
1030
1031 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1032 if (rx_pkt_size < 128){
1033 if(coal_conf->rx_coal_type != NO_COALESCE){
1034
1035 coal_conf->rx_timeout = 0;
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 }
1042 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1043
1044 if(coal_conf->rx_coal_type != LOW_COALESCE){
1045 coal_conf->rx_timeout = 1;
1046 coal_conf->rx_event_count = 4;
1047 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1048 coal_conf->rx_coal_type = LOW_COALESCE;
1049 }
1050 }
1051 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1052
1053 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1054 coal_conf->rx_timeout = 1;
1055 coal_conf->rx_event_count = 4;
1056 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1057 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1058 }
1059
1060 }
1061 else if(rx_pkt_size >= 1024){
1062 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1063 coal_conf->rx_timeout = 2;
1064 coal_conf->rx_event_count = 3;
1065 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1066 coal_conf->rx_coal_type = HIGH_COALESCE;
1067 }
1068 }
1069 }
1070 /* NOW FOR TX INTR COALESC */
1071 if(tx_pkt_rate < 800){
1072 if(coal_conf->tx_coal_type != NO_COALESCE){
1073
1074 coal_conf->tx_timeout = 0x0;
1075 coal_conf->tx_event_count = 0;
1076 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1077 coal_conf->tx_coal_type = NO_COALESCE;
1078 }
1079 }
1080 else{
1081
1082 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1083 if (tx_pkt_size < 128){
1084
1085 if(coal_conf->tx_coal_type != NO_COALESCE){
1086
1087 coal_conf->tx_timeout = 0;
1088 coal_conf->tx_event_count = 0;
1089 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1090 coal_conf->tx_coal_type = NO_COALESCE;
1091 }
1092
1093 }
1094 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1095
1096 if(coal_conf->tx_coal_type != LOW_COALESCE){
1097 coal_conf->tx_timeout = 1;
1098 coal_conf->tx_event_count = 2;
1099 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1100 coal_conf->tx_coal_type = LOW_COALESCE;
1101
1102 }
1103 }
1104 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1105
1106 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1107 coal_conf->tx_timeout = 2;
1108 coal_conf->tx_event_count = 5;
1109 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1110 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1111 }
1112
1113 }
1114 else if(tx_pkt_size >= 1024){
1115 if (tx_pkt_size >= 1024){
1116 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1117 coal_conf->tx_timeout = 4;
1118 coal_conf->tx_event_count = 8;
1119 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1120 coal_conf->tx_coal_type = HIGH_COALESCE;
1121 }
1122 }
1123 }
1124 }
1125 return 0;
1126
1127 }
1128 /*
1129 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1130 */
1131 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1132 {
1133
1134 struct net_device * dev = (struct net_device *) dev_id;
1135 struct amd8111e_priv *lp = netdev_priv(dev);
1136 void __iomem *mmio = lp->mmio;
1137 unsigned int intr0, intren0;
1138 unsigned int handled = 1;
1139
1140 if(unlikely(dev == NULL))
1141 return IRQ_NONE;
1142
1143 spin_lock(&lp->lock);
1144
1145 /* disabling interrupt */
1146 writel(INTREN, mmio + CMD0);
1147
1148 /* Read interrupt status */
1149 intr0 = readl(mmio + INT0);
1150 intren0 = readl(mmio + INTEN0);
1151
1152 /* Process all the INT event until INTR bit is clear. */
1153
1154 if (!(intr0 & INTR)){
1155 handled = 0;
1156 goto err_no_interrupt;
1157 }
1158
1159 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1160 writel(intr0, mmio + INT0);
1161
1162 /* Check if Receive Interrupt has occurred. */
1163 if (intr0 & RINT0) {
1164 if (napi_schedule_prep(&lp->napi)) {
1165 /* Disable receive interupts */
1166 writel(RINTEN0, mmio + INTEN0);
1167 /* Schedule a polling routine */
1168 __napi_schedule(&lp->napi);
1169 } else if (intren0 & RINTEN0) {
1170 printk("************Driver bug! interrupt while in poll\n");
1171 /* Fix by disable receive interrupts */
1172 writel(RINTEN0, mmio + INTEN0);
1173 }
1174 }
1175
1176 /* Check if Transmit Interrupt has occurred. */
1177 if (intr0 & TINT0)
1178 amd8111e_tx(dev);
1179
1180 /* Check if Link Change Interrupt has occurred. */
1181 if (intr0 & LCINT)
1182 amd8111e_link_change(dev);
1183
1184 /* Check if Hardware Timer Interrupt has occurred. */
1185 if (intr0 & STINT)
1186 amd8111e_calc_coalesce(dev);
1187
1188 err_no_interrupt:
1189 writel( VAL0 | INTREN,mmio + CMD0);
1190
1191 spin_unlock(&lp->lock);
1192
1193 return IRQ_RETVAL(handled);
1194 }
1195
1196 #ifdef CONFIG_NET_POLL_CONTROLLER
1197 static void amd8111e_poll(struct net_device *dev)
1198 {
1199 unsigned long flags;
1200 local_irq_save(flags);
1201 amd8111e_interrupt(0, dev);
1202 local_irq_restore(flags);
1203 }
1204 #endif
1205
1206
1207 /*
1208 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1209 */
1210 static int amd8111e_close(struct net_device * dev)
1211 {
1212 struct amd8111e_priv *lp = netdev_priv(dev);
1213 netif_stop_queue(dev);
1214
1215 napi_disable(&lp->napi);
1216
1217 spin_lock_irq(&lp->lock);
1218
1219 amd8111e_disable_interrupt(lp);
1220 amd8111e_stop_chip(lp);
1221
1222 /* Free transmit and receive skbs */
1223 amd8111e_free_skbs(lp->amd8111e_net_dev);
1224
1225 netif_carrier_off(lp->amd8111e_net_dev);
1226
1227 /* Delete ipg timer */
1228 if(lp->options & OPTION_DYN_IPG_ENABLE)
1229 del_timer_sync(&lp->ipg_data.ipg_timer);
1230
1231 spin_unlock_irq(&lp->lock);
1232 free_irq(dev->irq, dev);
1233 amd8111e_free_ring(lp);
1234
1235 /* Update the statistics before closing */
1236 amd8111e_get_stats(dev);
1237 lp->opened = 0;
1238 return 0;
1239 }
1240 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1241 */
1242 static int amd8111e_open(struct net_device * dev )
1243 {
1244 struct amd8111e_priv *lp = netdev_priv(dev);
1245
1246 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1247 dev->name, dev))
1248 return -EAGAIN;
1249
1250 napi_enable(&lp->napi);
1251
1252 spin_lock_irq(&lp->lock);
1253
1254 amd8111e_init_hw_default(lp);
1255
1256 if(amd8111e_restart(dev)){
1257 spin_unlock_irq(&lp->lock);
1258 napi_disable(&lp->napi);
1259 if (dev->irq)
1260 free_irq(dev->irq, dev);
1261 return -ENOMEM;
1262 }
1263 /* Start ipg timer */
1264 if(lp->options & OPTION_DYN_IPG_ENABLE){
1265 add_timer(&lp->ipg_data.ipg_timer);
1266 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1267 }
1268
1269 lp->opened = 1;
1270
1271 spin_unlock_irq(&lp->lock);
1272
1273 netif_start_queue(dev);
1274
1275 return 0;
1276 }
1277 /*
1278 This function checks if there is any transmit descriptors available to queue more packet.
1279 */
1280 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1281 {
1282 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1283 if (lp->tx_skbuff[tx_index])
1284 return -1;
1285 else
1286 return 0;
1287
1288 }
1289 /*
1290 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.
1291 */
1292
1293 static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
1294 struct net_device * dev)
1295 {
1296 struct amd8111e_priv *lp = netdev_priv(dev);
1297 int tx_index;
1298 unsigned long flags;
1299
1300 spin_lock_irqsave(&lp->lock, flags);
1301
1302 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1303
1304 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1305
1306 lp->tx_skbuff[tx_index] = skb;
1307 lp->tx_ring[tx_index].tx_flags = 0;
1308
1309 #if AMD8111E_VLAN_TAG_USED
1310 if (vlan_tx_tag_present(skb)) {
1311 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1312 cpu_to_le16(TCC_VLAN_INSERT);
1313 lp->tx_ring[tx_index].tag_ctrl_info =
1314 cpu_to_le16(vlan_tx_tag_get(skb));
1315
1316 }
1317 #endif
1318 lp->tx_dma_addr[tx_index] =
1319 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1320 lp->tx_ring[tx_index].buff_phy_addr =
1321 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1322
1323 /* Set FCS and LTINT bits */
1324 wmb();
1325 lp->tx_ring[tx_index].tx_flags |=
1326 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1327
1328 lp->tx_idx++;
1329
1330 /* Trigger an immediate send poll. */
1331 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1332 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1333
1334 if(amd8111e_tx_queue_avail(lp) < 0){
1335 netif_stop_queue(dev);
1336 }
1337 spin_unlock_irqrestore(&lp->lock, flags);
1338 return NETDEV_TX_OK;
1339 }
1340 /*
1341 This function returns all the memory mapped registers of the device.
1342 */
1343 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1344 {
1345 void __iomem *mmio = lp->mmio;
1346 /* Read only necessary registers */
1347 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1348 buf[1] = readl(mmio + XMT_RING_LEN0);
1349 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1350 buf[3] = readl(mmio + RCV_RING_LEN0);
1351 buf[4] = readl(mmio + CMD0);
1352 buf[5] = readl(mmio + CMD2);
1353 buf[6] = readl(mmio + CMD3);
1354 buf[7] = readl(mmio + CMD7);
1355 buf[8] = readl(mmio + INT0);
1356 buf[9] = readl(mmio + INTEN0);
1357 buf[10] = readl(mmio + LADRF);
1358 buf[11] = readl(mmio + LADRF+4);
1359 buf[12] = readl(mmio + STAT0);
1360 }
1361
1362
1363 /*
1364 This function sets promiscuos mode, all-multi mode or the multicast address
1365 list to the device.
1366 */
1367 static void amd8111e_set_multicast_list(struct net_device *dev)
1368 {
1369 struct netdev_hw_addr *ha;
1370 struct amd8111e_priv *lp = netdev_priv(dev);
1371 u32 mc_filter[2] ;
1372 int bit_num;
1373
1374 if(dev->flags & IFF_PROMISC){
1375 writel( VAL2 | PROM, lp->mmio + CMD2);
1376 return;
1377 }
1378 else
1379 writel( PROM, lp->mmio + CMD2);
1380 if (dev->flags & IFF_ALLMULTI ||
1381 netdev_mc_count(dev) > MAX_FILTER_SIZE) {
1382 /* get all multicast packet */
1383 mc_filter[1] = mc_filter[0] = 0xffffffff;
1384 lp->options |= OPTION_MULTICAST_ENABLE;
1385 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1386 return;
1387 }
1388 if (netdev_mc_empty(dev)) {
1389 /* get only own packets */
1390 mc_filter[1] = mc_filter[0] = 0;
1391 lp->options &= ~OPTION_MULTICAST_ENABLE;
1392 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1393 /* disable promiscuous mode */
1394 writel(PROM, lp->mmio + CMD2);
1395 return;
1396 }
1397 /* load all the multicast addresses in the logic filter */
1398 lp->options |= OPTION_MULTICAST_ENABLE;
1399 mc_filter[1] = mc_filter[0] = 0;
1400 netdev_for_each_mc_addr(ha, dev) {
1401 bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
1402 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1403 }
1404 amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1405
1406 /* To eliminate PCI posting bug */
1407 readl(lp->mmio + CMD2);
1408
1409 }
1410
1411 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1412 {
1413 struct amd8111e_priv *lp = netdev_priv(dev);
1414 struct pci_dev *pci_dev = lp->pci_dev;
1415 strcpy (info->driver, MODULE_NAME);
1416 strcpy (info->version, MODULE_VERS);
1417 sprintf(info->fw_version,"%u",chip_version);
1418 strcpy (info->bus_info, pci_name(pci_dev));
1419 }
1420
1421 static int amd8111e_get_regs_len(struct net_device *dev)
1422 {
1423 return AMD8111E_REG_DUMP_LEN;
1424 }
1425
1426 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1427 {
1428 struct amd8111e_priv *lp = netdev_priv(dev);
1429 regs->version = 0;
1430 amd8111e_read_regs(lp, buf);
1431 }
1432
1433 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1434 {
1435 struct amd8111e_priv *lp = netdev_priv(dev);
1436 spin_lock_irq(&lp->lock);
1437 mii_ethtool_gset(&lp->mii_if, ecmd);
1438 spin_unlock_irq(&lp->lock);
1439 return 0;
1440 }
1441
1442 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1443 {
1444 struct amd8111e_priv *lp = netdev_priv(dev);
1445 int res;
1446 spin_lock_irq(&lp->lock);
1447 res = mii_ethtool_sset(&lp->mii_if, ecmd);
1448 spin_unlock_irq(&lp->lock);
1449 return res;
1450 }
1451
1452 static int amd8111e_nway_reset(struct net_device *dev)
1453 {
1454 struct amd8111e_priv *lp = netdev_priv(dev);
1455 return mii_nway_restart(&lp->mii_if);
1456 }
1457
1458 static u32 amd8111e_get_link(struct net_device *dev)
1459 {
1460 struct amd8111e_priv *lp = netdev_priv(dev);
1461 return mii_link_ok(&lp->mii_if);
1462 }
1463
1464 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1465 {
1466 struct amd8111e_priv *lp = netdev_priv(dev);
1467 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1468 if (lp->options & OPTION_WOL_ENABLE)
1469 wol_info->wolopts = WAKE_MAGIC;
1470 }
1471
1472 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1473 {
1474 struct amd8111e_priv *lp = netdev_priv(dev);
1475 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1476 return -EINVAL;
1477 spin_lock_irq(&lp->lock);
1478 if (wol_info->wolopts & WAKE_MAGIC)
1479 lp->options |=
1480 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1481 else if(wol_info->wolopts & WAKE_PHY)
1482 lp->options |=
1483 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1484 else
1485 lp->options &= ~OPTION_WOL_ENABLE;
1486 spin_unlock_irq(&lp->lock);
1487 return 0;
1488 }
1489
1490 static const struct ethtool_ops ops = {
1491 .get_drvinfo = amd8111e_get_drvinfo,
1492 .get_regs_len = amd8111e_get_regs_len,
1493 .get_regs = amd8111e_get_regs,
1494 .get_settings = amd8111e_get_settings,
1495 .set_settings = amd8111e_set_settings,
1496 .nway_reset = amd8111e_nway_reset,
1497 .get_link = amd8111e_get_link,
1498 .get_wol = amd8111e_get_wol,
1499 .set_wol = amd8111e_set_wol,
1500 };
1501
1502 /*
1503 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.
1504 */
1505
1506 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1507 {
1508 struct mii_ioctl_data *data = if_mii(ifr);
1509 struct amd8111e_priv *lp = netdev_priv(dev);
1510 int err;
1511 u32 mii_regval;
1512
1513 switch(cmd) {
1514 case SIOCGMIIPHY:
1515 data->phy_id = lp->ext_phy_addr;
1516
1517 /* fallthru */
1518 case SIOCGMIIREG:
1519
1520 spin_lock_irq(&lp->lock);
1521 err = amd8111e_read_phy(lp, data->phy_id,
1522 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1523 spin_unlock_irq(&lp->lock);
1524
1525 data->val_out = mii_regval;
1526 return err;
1527
1528 case SIOCSMIIREG:
1529
1530 spin_lock_irq(&lp->lock);
1531 err = amd8111e_write_phy(lp, data->phy_id,
1532 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1533 spin_unlock_irq(&lp->lock);
1534
1535 return err;
1536
1537 default:
1538 /* do nothing */
1539 break;
1540 }
1541 return -EOPNOTSUPP;
1542 }
1543 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1544 {
1545 struct amd8111e_priv *lp = netdev_priv(dev);
1546 int i;
1547 struct sockaddr *addr = p;
1548
1549 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1550 spin_lock_irq(&lp->lock);
1551 /* Setting the MAC address to the device */
1552 for(i = 0; i < ETH_ADDR_LEN; i++)
1553 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1554
1555 spin_unlock_irq(&lp->lock);
1556
1557 return 0;
1558 }
1559
1560 /*
1561 This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers.
1562 */
1563 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1564 {
1565 struct amd8111e_priv *lp = netdev_priv(dev);
1566 int err;
1567
1568 if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1569 return -EINVAL;
1570
1571 if (!netif_running(dev)) {
1572 /* new_mtu will be used
1573 when device starts netxt time */
1574 dev->mtu = new_mtu;
1575 return 0;
1576 }
1577
1578 spin_lock_irq(&lp->lock);
1579
1580 /* stop the chip */
1581 writel(RUN, lp->mmio + CMD0);
1582
1583 dev->mtu = new_mtu;
1584
1585 err = amd8111e_restart(dev);
1586 spin_unlock_irq(&lp->lock);
1587 if(!err)
1588 netif_start_queue(dev);
1589 return err;
1590 }
1591
1592 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1593 {
1594 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1595 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1596
1597 /* To eliminate PCI posting bug */
1598 readl(lp->mmio + CMD7);
1599 return 0;
1600 }
1601
1602 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1603 {
1604
1605 /* Adapter is already stoped/suspended/interrupt-disabled */
1606 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1607
1608 /* To eliminate PCI posting bug */
1609 readl(lp->mmio + CMD7);
1610 return 0;
1611 }
1612
1613 /*
1614 * This function is called when a packet transmission fails to complete
1615 * within a reasonable period, on the assumption that an interrupt have
1616 * failed or the interface is locked up. This function will reinitialize
1617 * the hardware.
1618 */
1619 static void amd8111e_tx_timeout(struct net_device *dev)
1620 {
1621 struct amd8111e_priv* lp = netdev_priv(dev);
1622 int err;
1623
1624 printk(KERN_ERR "%s: transmit timed out, resetting\n",
1625 dev->name);
1626 spin_lock_irq(&lp->lock);
1627 err = amd8111e_restart(dev);
1628 spin_unlock_irq(&lp->lock);
1629 if(!err)
1630 netif_wake_queue(dev);
1631 }
1632 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1633 {
1634 struct net_device *dev = pci_get_drvdata(pci_dev);
1635 struct amd8111e_priv *lp = netdev_priv(dev);
1636
1637 if (!netif_running(dev))
1638 return 0;
1639
1640 /* disable the interrupt */
1641 spin_lock_irq(&lp->lock);
1642 amd8111e_disable_interrupt(lp);
1643 spin_unlock_irq(&lp->lock);
1644
1645 netif_device_detach(dev);
1646
1647 /* stop chip */
1648 spin_lock_irq(&lp->lock);
1649 if(lp->options & OPTION_DYN_IPG_ENABLE)
1650 del_timer_sync(&lp->ipg_data.ipg_timer);
1651 amd8111e_stop_chip(lp);
1652 spin_unlock_irq(&lp->lock);
1653
1654 if(lp->options & OPTION_WOL_ENABLE){
1655 /* enable wol */
1656 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1657 amd8111e_enable_magicpkt(lp);
1658 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1659 amd8111e_enable_link_change(lp);
1660
1661 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1662 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1663
1664 }
1665 else{
1666 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1667 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1668 }
1669
1670 pci_save_state(pci_dev);
1671 pci_set_power_state(pci_dev, PCI_D3hot);
1672
1673 return 0;
1674 }
1675 static int amd8111e_resume(struct pci_dev *pci_dev)
1676 {
1677 struct net_device *dev = pci_get_drvdata(pci_dev);
1678 struct amd8111e_priv *lp = netdev_priv(dev);
1679
1680 if (!netif_running(dev))
1681 return 0;
1682
1683 pci_set_power_state(pci_dev, PCI_D0);
1684 pci_restore_state(pci_dev);
1685
1686 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1687 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1688
1689 netif_device_attach(dev);
1690
1691 spin_lock_irq(&lp->lock);
1692 amd8111e_restart(dev);
1693 /* Restart ipg timer */
1694 if(lp->options & OPTION_DYN_IPG_ENABLE)
1695 mod_timer(&lp->ipg_data.ipg_timer,
1696 jiffies + IPG_CONVERGE_JIFFIES);
1697 spin_unlock_irq(&lp->lock);
1698
1699 return 0;
1700 }
1701
1702
1703 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1704 {
1705 struct net_device *dev = pci_get_drvdata(pdev);
1706 if (dev) {
1707 unregister_netdev(dev);
1708 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1709 free_netdev(dev);
1710 pci_release_regions(pdev);
1711 pci_disable_device(pdev);
1712 pci_set_drvdata(pdev, NULL);
1713 }
1714 }
1715 static void amd8111e_config_ipg(struct net_device* dev)
1716 {
1717 struct amd8111e_priv *lp = netdev_priv(dev);
1718 struct ipg_info* ipg_data = &lp->ipg_data;
1719 void __iomem *mmio = lp->mmio;
1720 unsigned int prev_col_cnt = ipg_data->col_cnt;
1721 unsigned int total_col_cnt;
1722 unsigned int tmp_ipg;
1723
1724 if(lp->link_config.duplex == DUPLEX_FULL){
1725 ipg_data->ipg = DEFAULT_IPG;
1726 return;
1727 }
1728
1729 if(ipg_data->ipg_state == SSTATE){
1730
1731 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1732
1733 ipg_data->timer_tick = 0;
1734 ipg_data->ipg = MIN_IPG - IPG_STEP;
1735 ipg_data->current_ipg = MIN_IPG;
1736 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1737 ipg_data->ipg_state = CSTATE;
1738 }
1739 else
1740 ipg_data->timer_tick++;
1741 }
1742
1743 if(ipg_data->ipg_state == CSTATE){
1744
1745 /* Get the current collision count */
1746
1747 total_col_cnt = ipg_data->col_cnt =
1748 amd8111e_read_mib(mmio, xmt_collisions);
1749
1750 if ((total_col_cnt - prev_col_cnt) <
1751 (ipg_data->diff_col_cnt)){
1752
1753 ipg_data->diff_col_cnt =
1754 total_col_cnt - prev_col_cnt ;
1755
1756 ipg_data->ipg = ipg_data->current_ipg;
1757 }
1758
1759 ipg_data->current_ipg += IPG_STEP;
1760
1761 if (ipg_data->current_ipg <= MAX_IPG)
1762 tmp_ipg = ipg_data->current_ipg;
1763 else{
1764 tmp_ipg = ipg_data->ipg;
1765 ipg_data->ipg_state = SSTATE;
1766 }
1767 writew((u32)tmp_ipg, mmio + IPG);
1768 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1769 }
1770 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1771 return;
1772
1773 }
1774
1775 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1776 {
1777 struct amd8111e_priv *lp = netdev_priv(dev);
1778 int i;
1779
1780 for (i = 0x1e; i >= 0; i--) {
1781 u32 id1, id2;
1782
1783 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1784 continue;
1785 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1786 continue;
1787 lp->ext_phy_id = (id1 << 16) | id2;
1788 lp->ext_phy_addr = i;
1789 return;
1790 }
1791 lp->ext_phy_id = 0;
1792 lp->ext_phy_addr = 1;
1793 }
1794
1795 static const struct net_device_ops amd8111e_netdev_ops = {
1796 .ndo_open = amd8111e_open,
1797 .ndo_stop = amd8111e_close,
1798 .ndo_start_xmit = amd8111e_start_xmit,
1799 .ndo_tx_timeout = amd8111e_tx_timeout,
1800 .ndo_get_stats = amd8111e_get_stats,
1801 .ndo_set_multicast_list = amd8111e_set_multicast_list,
1802 .ndo_validate_addr = eth_validate_addr,
1803 .ndo_set_mac_address = amd8111e_set_mac_address,
1804 .ndo_do_ioctl = amd8111e_ioctl,
1805 .ndo_change_mtu = amd8111e_change_mtu,
1806 #ifdef CONFIG_NET_POLL_CONTROLLER
1807 .ndo_poll_controller = amd8111e_poll,
1808 #endif
1809 };
1810
1811 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1812 const struct pci_device_id *ent)
1813 {
1814 int err,i,pm_cap;
1815 unsigned long reg_addr,reg_len;
1816 struct amd8111e_priv* lp;
1817 struct net_device* dev;
1818
1819 err = pci_enable_device(pdev);
1820 if(err){
1821 printk(KERN_ERR "amd8111e: Cannot enable new PCI device, "
1822 "exiting.\n");
1823 return err;
1824 }
1825
1826 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1827 printk(KERN_ERR "amd8111e: Cannot find PCI base address, "
1828 "exiting.\n");
1829 err = -ENODEV;
1830 goto err_disable_pdev;
1831 }
1832
1833 err = pci_request_regions(pdev, MODULE_NAME);
1834 if(err){
1835 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1836 "exiting.\n");
1837 goto err_disable_pdev;
1838 }
1839
1840 pci_set_master(pdev);
1841
1842 /* Find power-management capability. */
1843 if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
1844 printk(KERN_ERR "amd8111e: No Power Management capability, "
1845 "exiting.\n");
1846 goto err_free_reg;
1847 }
1848
1849 /* Initialize DMA */
1850 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) < 0) {
1851 printk(KERN_ERR "amd8111e: DMA not supported,"
1852 "exiting.\n");
1853 goto err_free_reg;
1854 }
1855
1856 reg_addr = pci_resource_start(pdev, 0);
1857 reg_len = pci_resource_len(pdev, 0);
1858
1859 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1860 if (!dev) {
1861 printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n");
1862 err = -ENOMEM;
1863 goto err_free_reg;
1864 }
1865
1866 SET_NETDEV_DEV(dev, &pdev->dev);
1867
1868 #if AMD8111E_VLAN_TAG_USED
1869 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
1870 #endif
1871
1872 lp = netdev_priv(dev);
1873 lp->pci_dev = pdev;
1874 lp->amd8111e_net_dev = dev;
1875 lp->pm_cap = pm_cap;
1876
1877 spin_lock_init(&lp->lock);
1878
1879 lp->mmio = ioremap(reg_addr, reg_len);
1880 if (!lp->mmio) {
1881 printk(KERN_ERR "amd8111e: Cannot map device registers, "
1882 "exiting\n");
1883 err = -ENOMEM;
1884 goto err_free_dev;
1885 }
1886
1887 /* Initializing MAC address */
1888 for(i = 0; i < ETH_ADDR_LEN; i++)
1889 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1890
1891 /* Setting user defined parametrs */
1892 lp->ext_phy_option = speed_duplex[card_idx];
1893 if(coalesce[card_idx])
1894 lp->options |= OPTION_INTR_COAL_ENABLE;
1895 if(dynamic_ipg[card_idx++])
1896 lp->options |= OPTION_DYN_IPG_ENABLE;
1897
1898
1899 /* Initialize driver entry points */
1900 dev->netdev_ops = &amd8111e_netdev_ops;
1901 SET_ETHTOOL_OPS(dev, &ops);
1902 dev->irq =pdev->irq;
1903 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1904 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1905
1906 #if AMD8111E_VLAN_TAG_USED
1907 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1908 #endif
1909 /* Probe the external PHY */
1910 amd8111e_probe_ext_phy(dev);
1911
1912 /* setting mii default values */
1913 lp->mii_if.dev = dev;
1914 lp->mii_if.mdio_read = amd8111e_mdio_read;
1915 lp->mii_if.mdio_write = amd8111e_mdio_write;
1916 lp->mii_if.phy_id = lp->ext_phy_addr;
1917
1918 /* Set receive buffer length and set jumbo option*/
1919 amd8111e_set_rx_buff_len(dev);
1920
1921
1922 err = register_netdev(dev);
1923 if (err) {
1924 printk(KERN_ERR "amd8111e: Cannot register net device, "
1925 "exiting.\n");
1926 goto err_iounmap;
1927 }
1928
1929 pci_set_drvdata(pdev, dev);
1930
1931 /* Initialize software ipg timer */
1932 if(lp->options & OPTION_DYN_IPG_ENABLE){
1933 init_timer(&lp->ipg_data.ipg_timer);
1934 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
1935 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
1936 lp->ipg_data.ipg_timer.expires = jiffies +
1937 IPG_CONVERGE_JIFFIES;
1938 lp->ipg_data.ipg = DEFAULT_IPG;
1939 lp->ipg_data.ipg_state = CSTATE;
1940 }
1941
1942 /* display driver and device information */
1943
1944 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1945 printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n",
1946 dev->name,MODULE_VERS);
1947 printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1948 dev->name, chip_version, dev->dev_addr);
1949 if (lp->ext_phy_id)
1950 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
1951 dev->name, lp->ext_phy_id, lp->ext_phy_addr);
1952 else
1953 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
1954 dev->name);
1955 return 0;
1956 err_iounmap:
1957 iounmap(lp->mmio);
1958
1959 err_free_dev:
1960 free_netdev(dev);
1961
1962 err_free_reg:
1963 pci_release_regions(pdev);
1964
1965 err_disable_pdev:
1966 pci_disable_device(pdev);
1967 pci_set_drvdata(pdev, NULL);
1968 return err;
1969
1970 }
1971
1972 static struct pci_driver amd8111e_driver = {
1973 .name = MODULE_NAME,
1974 .id_table = amd8111e_pci_tbl,
1975 .probe = amd8111e_probe_one,
1976 .remove = __devexit_p(amd8111e_remove_one),
1977 .suspend = amd8111e_suspend,
1978 .resume = amd8111e_resume
1979 };
1980
1981 static int __init amd8111e_init(void)
1982 {
1983 return pci_register_driver(&amd8111e_driver);
1984 }
1985
1986 static void __exit amd8111e_cleanup(void)
1987 {
1988 pci_unregister_driver(&amd8111e_driver);
1989 }
1990
1991 module_init(amd8111e_init);
1992 module_exit(amd8111e_cleanup);
x86 "subsystem" repository