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[GFS2] Fix change nlink deadlock
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / amd8111e.c
blob18896f24d407e26bbb8c3ba4fa63c42aeac1c280
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 "3.0.6"
105 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
106 MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version 3.0.6");
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 #ifdef CONFIG_AMD8111E_NAPI
675 return vlan_hwaccel_receive_skb(skb, lp->vlgrp,vlan_tag);
676 #else
677 return vlan_hwaccel_rx(skb, lp->vlgrp, vlan_tag);
678 #endif /* CONFIG_AMD8111E_NAPI */
679 }
680 #endif
681
682 /*
683 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.
684 */
685 static int amd8111e_tx(struct net_device *dev)
686 {
687 struct amd8111e_priv* lp = netdev_priv(dev);
688 int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
689 int status;
690 /* Complete all the transmit packet */
691 while (lp->tx_complete_idx != lp->tx_idx){
692 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
693 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
694
695 if(status & OWN_BIT)
696 break; /* It still hasn't been Txed */
697
698 lp->tx_ring[tx_index].buff_phy_addr = 0;
699
700 /* We must free the original skb */
701 if (lp->tx_skbuff[tx_index]) {
702 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
703 lp->tx_skbuff[tx_index]->len,
704 PCI_DMA_TODEVICE);
705 dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
706 lp->tx_skbuff[tx_index] = NULL;
707 lp->tx_dma_addr[tx_index] = 0;
708 }
709 lp->tx_complete_idx++;
710 /*COAL update tx coalescing parameters */
711 lp->coal_conf.tx_packets++;
712 lp->coal_conf.tx_bytes += lp->tx_ring[tx_index].buff_count;
713
714 if (netif_queue_stopped(dev) &&
715 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
716 /* The ring is no longer full, clear tbusy. */
717 /* lp->tx_full = 0; */
718 netif_wake_queue (dev);
719 }
720 }
721 return 0;
722 }
723
724 #ifdef CONFIG_AMD8111E_NAPI
725 /* This function handles the driver receive operation in polling mode */
726 static int amd8111e_rx_poll(struct net_device *dev, int * budget)
727 {
728 struct amd8111e_priv *lp = netdev_priv(dev);
729 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
730 void __iomem *mmio = lp->mmio;
731 struct sk_buff *skb,*new_skb;
732 int min_pkt_len, status;
733 unsigned int intr0;
734 int num_rx_pkt = 0;
735 /*int max_rx_pkt = NUM_RX_BUFFERS;*/
736 short pkt_len;
737 #if AMD8111E_VLAN_TAG_USED
738 short vtag;
739 #endif
740 int rx_pkt_limit = dev->quota;
741 unsigned long flags;
742
743 do{
744 /* process receive packets until we use the quota*/
745 /* If we own the next entry, it's a new packet. Send it up. */
746 while(1) {
747 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
748 if (status & OWN_BIT)
749 break;
750
751 /*
752 * There is a tricky error noted by John Murphy,
753 * <murf@perftech.com> to Russ Nelson: Even with
754 * full-sized * buffers it's possible for a
755 * jabber packet to use two buffers, with only
756 * the last correctly noting the error.
757 */
758
759 if(status & ERR_BIT) {
760 /* reseting flags */
761 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
762 goto err_next_pkt;
763 }
764 /* check for STP and ENP */
765 if(!((status & STP_BIT) && (status & ENP_BIT))){
766 /* reseting flags */
767 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
768 goto err_next_pkt;
769 }
770 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
771
772 #if AMD8111E_VLAN_TAG_USED
773 vtag = status & TT_MASK;
774 /*MAC will strip vlan tag*/
775 if(lp->vlgrp != NULL && vtag !=0)
776 min_pkt_len =MIN_PKT_LEN - 4;
777 else
778 #endif
779 min_pkt_len =MIN_PKT_LEN;
780
781 if (pkt_len < min_pkt_len) {
782 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
783 lp->drv_rx_errors++;
784 goto err_next_pkt;
785 }
786 if(--rx_pkt_limit < 0)
787 goto rx_not_empty;
788 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
789 /* if allocation fail,
790 ignore that pkt and go to next one */
791 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
792 lp->drv_rx_errors++;
793 goto err_next_pkt;
794 }
795
796 skb_reserve(new_skb, 2);
797 skb = lp->rx_skbuff[rx_index];
798 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
799 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
800 skb_put(skb, pkt_len);
801 skb->dev = dev;
802 lp->rx_skbuff[rx_index] = new_skb;
803 new_skb->dev = dev;
804 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
805 new_skb->data,
806 lp->rx_buff_len-2,
807 PCI_DMA_FROMDEVICE);
808
809 skb->protocol = eth_type_trans(skb, dev);
810
811 #if AMD8111E_VLAN_TAG_USED
812 if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
813 amd8111e_vlan_rx(lp, skb,
814 le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
815 } else
816 #endif
817 netif_receive_skb(skb);
818 /*COAL update rx coalescing parameters*/
819 lp->coal_conf.rx_packets++;
820 lp->coal_conf.rx_bytes += pkt_len;
821 num_rx_pkt++;
822 dev->last_rx = jiffies;
823
824 err_next_pkt:
825 lp->rx_ring[rx_index].buff_phy_addr
826 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
827 lp->rx_ring[rx_index].buff_count =
828 cpu_to_le16(lp->rx_buff_len-2);
829 wmb();
830 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
831 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
832 }
833 /* Check the interrupt status register for more packets in the
834 mean time. Process them since we have not used up our quota.*/
835
836 intr0 = readl(mmio + INT0);
837 /*Ack receive packets */
838 writel(intr0 & RINT0,mmio + INT0);
839
840 } while(intr0 & RINT0);
841
842 /* Receive descriptor is empty now */
843 dev->quota -= num_rx_pkt;
844 *budget -= num_rx_pkt;
845
846 spin_lock_irqsave(&lp->lock, flags);
847 netif_rx_complete(dev);
848 writel(VAL0|RINTEN0, mmio + INTEN0);
849 writel(VAL2 | RDMD0, mmio + CMD0);
850 spin_unlock_irqrestore(&lp->lock, flags);
851 return 0;
852
853 rx_not_empty:
854 /* Do not call a netif_rx_complete */
855 dev->quota -= num_rx_pkt;
856 *budget -= num_rx_pkt;
857 return 1;
858 }
859
860 #else
861 /*
862 This function will check the ownership of receive buffers and descriptors. It will indicate to kernel up to half the number of maximum receive buffers in the descriptor ring, in a single receive interrupt. It will also replenish the descriptors with new skbs.
863 */
864 static int amd8111e_rx(struct net_device *dev)
865 {
866 struct amd8111e_priv *lp = netdev_priv(dev);
867 struct sk_buff *skb,*new_skb;
868 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
869 int min_pkt_len, status;
870 int num_rx_pkt = 0;
871 int max_rx_pkt = NUM_RX_BUFFERS;
872 short pkt_len;
873 #if AMD8111E_VLAN_TAG_USED
874 short vtag;
875 #endif
876
877 /* If we own the next entry, it's a new packet. Send it up. */
878 while(++num_rx_pkt <= max_rx_pkt){
879 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
880 if(status & OWN_BIT)
881 return 0;
882
883 /* check if err summary bit is set */
884 if(status & ERR_BIT){
885 /*
886 * There is a tricky error noted by John Murphy,
887 * <murf@perftech.com> to Russ Nelson: Even with full-sized
888 * buffers it's possible for a jabber packet to use two
889 * buffers, with only the last correctly noting the error. */
890 /* reseting flags */
891 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
892 goto err_next_pkt;
893 }
894 /* check for STP and ENP */
895 if(!((status & STP_BIT) && (status & ENP_BIT))){
896 /* reseting flags */
897 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
898 goto err_next_pkt;
899 }
900 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
901
902 #if AMD8111E_VLAN_TAG_USED
903 vtag = status & TT_MASK;
904 /*MAC will strip vlan tag*/
905 if(lp->vlgrp != NULL && vtag !=0)
906 min_pkt_len =MIN_PKT_LEN - 4;
907 else
908 #endif
909 min_pkt_len =MIN_PKT_LEN;
910
911 if (pkt_len < min_pkt_len) {
912 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
913 lp->drv_rx_errors++;
914 goto err_next_pkt;
915 }
916 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
917 /* if allocation fail,
918 ignore that pkt and go to next one */
919 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
920 lp->drv_rx_errors++;
921 goto err_next_pkt;
922 }
923
924 skb_reserve(new_skb, 2);
925 skb = lp->rx_skbuff[rx_index];
926 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
927 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
928 skb_put(skb, pkt_len);
929 skb->dev = dev;
930 lp->rx_skbuff[rx_index] = new_skb;
931 new_skb->dev = dev;
932 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
933 new_skb->data, lp->rx_buff_len-2,PCI_DMA_FROMDEVICE);
934
935 skb->protocol = eth_type_trans(skb, dev);
936
937 #if AMD8111E_VLAN_TAG_USED
938 if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
939 amd8111e_vlan_rx(lp, skb,
940 le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
941 } else
942 #endif
943
944 netif_rx (skb);
945 /*COAL update rx coalescing parameters*/
946 lp->coal_conf.rx_packets++;
947 lp->coal_conf.rx_bytes += pkt_len;
948
949 dev->last_rx = jiffies;
950
951 err_next_pkt:
952 lp->rx_ring[rx_index].buff_phy_addr
953 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
954 lp->rx_ring[rx_index].buff_count =
955 cpu_to_le16(lp->rx_buff_len-2);
956 wmb();
957 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
958 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
959 }
960
961 return 0;
962 }
963 #endif /* CONFIG_AMD8111E_NAPI */
964 /*
965 This function will indicate the link status to the kernel.
966 */
967 static int amd8111e_link_change(struct net_device* dev)
968 {
969 struct amd8111e_priv *lp = netdev_priv(dev);
970 int status0,speed;
971
972 /* read the link change */
973 status0 = readl(lp->mmio + STAT0);
974
975 if(status0 & LINK_STATS){
976 if(status0 & AUTONEG_COMPLETE)
977 lp->link_config.autoneg = AUTONEG_ENABLE;
978 else
979 lp->link_config.autoneg = AUTONEG_DISABLE;
980
981 if(status0 & FULL_DPLX)
982 lp->link_config.duplex = DUPLEX_FULL;
983 else
984 lp->link_config.duplex = DUPLEX_HALF;
985 speed = (status0 & SPEED_MASK) >> 7;
986 if(speed == PHY_SPEED_10)
987 lp->link_config.speed = SPEED_10;
988 else if(speed == PHY_SPEED_100)
989 lp->link_config.speed = SPEED_100;
990
991 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name,
992 (lp->link_config.speed == SPEED_100) ? "100": "10",
993 (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
994 netif_carrier_on(dev);
995 }
996 else{
997 lp->link_config.speed = SPEED_INVALID;
998 lp->link_config.duplex = DUPLEX_INVALID;
999 lp->link_config.autoneg = AUTONEG_INVALID;
1000 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
1001 netif_carrier_off(dev);
1002 }
1003
1004 return 0;
1005 }
1006 /*
1007 This function reads the mib counters.
1008 */
1009 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
1010 {
1011 unsigned int status;
1012 unsigned int data;
1013 unsigned int repeat = REPEAT_CNT;
1014
1015 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
1016 do {
1017 status = readw(mmio + MIB_ADDR);
1018 udelay(2); /* controller takes MAX 2 us to get mib data */
1019 }
1020 while (--repeat && (status & MIB_CMD_ACTIVE));
1021
1022 data = readl(mmio + MIB_DATA);
1023 return data;
1024 }
1025
1026 /*
1027 This function reads the mib registers and returns the hardware statistics. It updates previous internal driver statistics with new values.
1028 */
1029 static struct net_device_stats *amd8111e_get_stats(struct net_device * dev)
1030 {
1031 struct amd8111e_priv *lp = netdev_priv(dev);
1032 void __iomem *mmio = lp->mmio;
1033 unsigned long flags;
1034 /* struct net_device_stats *prev_stats = &lp->prev_stats; */
1035 struct net_device_stats* new_stats = &lp->stats;
1036
1037 if(!lp->opened)
1038 return &lp->stats;
1039 spin_lock_irqsave (&lp->lock, flags);
1040
1041 /* stats.rx_packets */
1042 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
1043 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
1044 amd8111e_read_mib(mmio, rcv_unicast_pkts);
1045
1046 /* stats.tx_packets */
1047 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
1048
1049 /*stats.rx_bytes */
1050 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
1051
1052 /* stats.tx_bytes */
1053 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
1054
1055 /* stats.rx_errors */
1056 /* hw errors + errors driver reported */
1057 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
1058 amd8111e_read_mib(mmio, rcv_fragments)+
1059 amd8111e_read_mib(mmio, rcv_jabbers)+
1060 amd8111e_read_mib(mmio, rcv_alignment_errors)+
1061 amd8111e_read_mib(mmio, rcv_fcs_errors)+
1062 amd8111e_read_mib(mmio, rcv_miss_pkts)+
1063 lp->drv_rx_errors;
1064
1065 /* stats.tx_errors */
1066 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1067
1068 /* stats.rx_dropped*/
1069 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
1070
1071 /* stats.tx_dropped*/
1072 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1073
1074 /* stats.multicast*/
1075 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
1076
1077 /* stats.collisions*/
1078 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
1079
1080 /* stats.rx_length_errors*/
1081 new_stats->rx_length_errors =
1082 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
1083 amd8111e_read_mib(mmio, rcv_oversize_pkts);
1084
1085 /* stats.rx_over_errors*/
1086 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1087
1088 /* stats.rx_crc_errors*/
1089 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
1090
1091 /* stats.rx_frame_errors*/
1092 new_stats->rx_frame_errors =
1093 amd8111e_read_mib(mmio, rcv_alignment_errors);
1094
1095 /* stats.rx_fifo_errors */
1096 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1097
1098 /* stats.rx_missed_errors */
1099 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1100
1101 /* stats.tx_aborted_errors*/
1102 new_stats->tx_aborted_errors =
1103 amd8111e_read_mib(mmio, xmt_excessive_collision);
1104
1105 /* stats.tx_carrier_errors*/
1106 new_stats->tx_carrier_errors =
1107 amd8111e_read_mib(mmio, xmt_loss_carrier);
1108
1109 /* stats.tx_fifo_errors*/
1110 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1111
1112 /* stats.tx_window_errors*/
1113 new_stats->tx_window_errors =
1114 amd8111e_read_mib(mmio, xmt_late_collision);
1115
1116 /* Reset the mibs for collecting new statistics */
1117 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
1118
1119 spin_unlock_irqrestore (&lp->lock, flags);
1120
1121 return new_stats;
1122 }
1123 /* This function recalculate the interupt coalescing mode on every interrupt
1124 according to the datarate and the packet rate.
1125 */
1126 static int amd8111e_calc_coalesce(struct net_device *dev)
1127 {
1128 struct amd8111e_priv *lp = netdev_priv(dev);
1129 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1130 int tx_pkt_rate;
1131 int rx_pkt_rate;
1132 int tx_data_rate;
1133 int rx_data_rate;
1134 int rx_pkt_size;
1135 int tx_pkt_size;
1136
1137 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1138 coal_conf->tx_prev_packets = coal_conf->tx_packets;
1139
1140 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1141 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
1142
1143 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1144 coal_conf->rx_prev_packets = coal_conf->rx_packets;
1145
1146 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1147 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
1148
1149 if(rx_pkt_rate < 800){
1150 if(coal_conf->rx_coal_type != NO_COALESCE){
1151
1152 coal_conf->rx_timeout = 0x0;
1153 coal_conf->rx_event_count = 0;
1154 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1155 coal_conf->rx_coal_type = NO_COALESCE;
1156 }
1157 }
1158 else{
1159
1160 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1161 if (rx_pkt_size < 128){
1162 if(coal_conf->rx_coal_type != NO_COALESCE){
1163
1164 coal_conf->rx_timeout = 0;
1165 coal_conf->rx_event_count = 0;
1166 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1167 coal_conf->rx_coal_type = NO_COALESCE;
1168 }
1169
1170 }
1171 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1172
1173 if(coal_conf->rx_coal_type != LOW_COALESCE){
1174 coal_conf->rx_timeout = 1;
1175 coal_conf->rx_event_count = 4;
1176 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1177 coal_conf->rx_coal_type = LOW_COALESCE;
1178 }
1179 }
1180 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1181
1182 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1183 coal_conf->rx_timeout = 1;
1184 coal_conf->rx_event_count = 4;
1185 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1186 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1187 }
1188
1189 }
1190 else if(rx_pkt_size >= 1024){
1191 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1192 coal_conf->rx_timeout = 2;
1193 coal_conf->rx_event_count = 3;
1194 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1195 coal_conf->rx_coal_type = HIGH_COALESCE;
1196 }
1197 }
1198 }
1199 /* NOW FOR TX INTR COALESC */
1200 if(tx_pkt_rate < 800){
1201 if(coal_conf->tx_coal_type != NO_COALESCE){
1202
1203 coal_conf->tx_timeout = 0x0;
1204 coal_conf->tx_event_count = 0;
1205 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1206 coal_conf->tx_coal_type = NO_COALESCE;
1207 }
1208 }
1209 else{
1210
1211 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1212 if (tx_pkt_size < 128){
1213
1214 if(coal_conf->tx_coal_type != NO_COALESCE){
1215
1216 coal_conf->tx_timeout = 0;
1217 coal_conf->tx_event_count = 0;
1218 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1219 coal_conf->tx_coal_type = NO_COALESCE;
1220 }
1221
1222 }
1223 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1224
1225 if(coal_conf->tx_coal_type != LOW_COALESCE){
1226 coal_conf->tx_timeout = 1;
1227 coal_conf->tx_event_count = 2;
1228 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1229 coal_conf->tx_coal_type = LOW_COALESCE;
1230
1231 }
1232 }
1233 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1234
1235 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1236 coal_conf->tx_timeout = 2;
1237 coal_conf->tx_event_count = 5;
1238 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1239 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1240 }
1241
1242 }
1243 else if(tx_pkt_size >= 1024){
1244 if (tx_pkt_size >= 1024){
1245 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1246 coal_conf->tx_timeout = 4;
1247 coal_conf->tx_event_count = 8;
1248 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1249 coal_conf->tx_coal_type = HIGH_COALESCE;
1250 }
1251 }
1252 }
1253 }
1254 return 0;
1255
1256 }
1257 /*
1258 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1259 */
1260 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1261 {
1262
1263 struct net_device * dev = (struct net_device *) dev_id;
1264 struct amd8111e_priv *lp = netdev_priv(dev);
1265 void __iomem *mmio = lp->mmio;
1266 unsigned int intr0, intren0;
1267 unsigned int handled = 1;
1268
1269 if(unlikely(dev == NULL))
1270 return IRQ_NONE;
1271
1272 spin_lock(&lp->lock);
1273
1274 /* disabling interrupt */
1275 writel(INTREN, mmio + CMD0);
1276
1277 /* Read interrupt status */
1278 intr0 = readl(mmio + INT0);
1279 intren0 = readl(mmio + INTEN0);
1280
1281 /* Process all the INT event until INTR bit is clear. */
1282
1283 if (!(intr0 & INTR)){
1284 handled = 0;
1285 goto err_no_interrupt;
1286 }
1287
1288 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1289 writel(intr0, mmio + INT0);
1290
1291 /* Check if Receive Interrupt has occurred. */
1292 #ifdef CONFIG_AMD8111E_NAPI
1293 if(intr0 & RINT0){
1294 if(netif_rx_schedule_prep(dev)){
1295 /* Disable receive interupts */
1296 writel(RINTEN0, mmio + INTEN0);
1297 /* Schedule a polling routine */
1298 __netif_rx_schedule(dev);
1299 }
1300 else if (intren0 & RINTEN0) {
1301 printk("************Driver bug! \
1302 interrupt while in poll\n");
1303 /* Fix by disable receive interrupts */
1304 writel(RINTEN0, mmio + INTEN0);
1305 }
1306 }
1307 #else
1308 if(intr0 & RINT0){
1309 amd8111e_rx(dev);
1310 writel(VAL2 | RDMD0, mmio + CMD0);
1311 }
1312 #endif /* CONFIG_AMD8111E_NAPI */
1313 /* Check if Transmit Interrupt has occurred. */
1314 if(intr0 & TINT0)
1315 amd8111e_tx(dev);
1316
1317 /* Check if Link Change Interrupt has occurred. */
1318 if (intr0 & LCINT)
1319 amd8111e_link_change(dev);
1320
1321 /* Check if Hardware Timer Interrupt has occurred. */
1322 if (intr0 & STINT)
1323 amd8111e_calc_coalesce(dev);
1324
1325 err_no_interrupt:
1326 writel( VAL0 | INTREN,mmio + CMD0);
1327
1328 spin_unlock(&lp->lock);
1329
1330 return IRQ_RETVAL(handled);
1331 }
1332
1333 #ifdef CONFIG_NET_POLL_CONTROLLER
1334 static void amd8111e_poll(struct net_device *dev)
1335 {
1336 unsigned long flags;
1337 local_save_flags(flags);
1338 local_irq_disable();
1339 amd8111e_interrupt(0, dev);
1340 local_irq_restore(flags);
1341 }
1342 #endif
1343
1344
1345 /*
1346 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1347 */
1348 static int amd8111e_close(struct net_device * dev)
1349 {
1350 struct amd8111e_priv *lp = netdev_priv(dev);
1351 netif_stop_queue(dev);
1352
1353 spin_lock_irq(&lp->lock);
1354
1355 amd8111e_disable_interrupt(lp);
1356 amd8111e_stop_chip(lp);
1357 amd8111e_free_ring(lp);
1358
1359 netif_carrier_off(lp->amd8111e_net_dev);
1360
1361 /* Delete ipg timer */
1362 if(lp->options & OPTION_DYN_IPG_ENABLE)
1363 del_timer_sync(&lp->ipg_data.ipg_timer);
1364
1365 spin_unlock_irq(&lp->lock);
1366 free_irq(dev->irq, dev);
1367
1368 /* Update the statistics before closing */
1369 amd8111e_get_stats(dev);
1370 lp->opened = 0;
1371 return 0;
1372 }
1373 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1374 */
1375 static int amd8111e_open(struct net_device * dev )
1376 {
1377 struct amd8111e_priv *lp = netdev_priv(dev);
1378
1379 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1380 dev->name, dev))
1381 return -EAGAIN;
1382
1383 spin_lock_irq(&lp->lock);
1384
1385 amd8111e_init_hw_default(lp);
1386
1387 if(amd8111e_restart(dev)){
1388 spin_unlock_irq(&lp->lock);
1389 if (dev->irq)
1390 free_irq(dev->irq, dev);
1391 return -ENOMEM;
1392 }
1393 /* Start ipg timer */
1394 if(lp->options & OPTION_DYN_IPG_ENABLE){
1395 add_timer(&lp->ipg_data.ipg_timer);
1396 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1397 }
1398
1399 lp->opened = 1;
1400
1401 spin_unlock_irq(&lp->lock);
1402
1403 netif_start_queue(dev);
1404
1405 return 0;
1406 }
1407 /*
1408 This function checks if there is any transmit descriptors available to queue more packet.
1409 */
1410 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1411 {
1412 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1413 if(lp->tx_skbuff[tx_index] != 0)
1414 return -1;
1415 else
1416 return 0;
1417
1418 }
1419 /*
1420 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.
1421 */
1422
1423 static int amd8111e_start_xmit(struct sk_buff *skb, struct net_device * dev)
1424 {
1425 struct amd8111e_priv *lp = netdev_priv(dev);
1426 int tx_index;
1427 unsigned long flags;
1428
1429 spin_lock_irqsave(&lp->lock, flags);
1430
1431 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1432
1433 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1434
1435 lp->tx_skbuff[tx_index] = skb;
1436 lp->tx_ring[tx_index].tx_flags = 0;
1437
1438 #if AMD8111E_VLAN_TAG_USED
1439 if((lp->vlgrp != NULL) && vlan_tx_tag_present(skb)){
1440 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1441 cpu_to_le16(TCC_VLAN_INSERT);
1442 lp->tx_ring[tx_index].tag_ctrl_info =
1443 cpu_to_le16(vlan_tx_tag_get(skb));
1444
1445 }
1446 #endif
1447 lp->tx_dma_addr[tx_index] =
1448 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1449 lp->tx_ring[tx_index].buff_phy_addr =
1450 (u32) cpu_to_le32(lp->tx_dma_addr[tx_index]);
1451
1452 /* Set FCS and LTINT bits */
1453 wmb();
1454 lp->tx_ring[tx_index].tx_flags |=
1455 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1456
1457 lp->tx_idx++;
1458
1459 /* Trigger an immediate send poll. */
1460 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1461 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1462
1463 dev->trans_start = jiffies;
1464
1465 if(amd8111e_tx_queue_avail(lp) < 0){
1466 netif_stop_queue(dev);
1467 }
1468 spin_unlock_irqrestore(&lp->lock, flags);
1469 return 0;
1470 }
1471 /*
1472 This function returns all the memory mapped registers of the device.
1473 */
1474 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1475 {
1476 void __iomem *mmio = lp->mmio;
1477 /* Read only necessary registers */
1478 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1479 buf[1] = readl(mmio + XMT_RING_LEN0);
1480 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1481 buf[3] = readl(mmio + RCV_RING_LEN0);
1482 buf[4] = readl(mmio + CMD0);
1483 buf[5] = readl(mmio + CMD2);
1484 buf[6] = readl(mmio + CMD3);
1485 buf[7] = readl(mmio + CMD7);
1486 buf[8] = readl(mmio + INT0);
1487 buf[9] = readl(mmio + INTEN0);
1488 buf[10] = readl(mmio + LADRF);
1489 buf[11] = readl(mmio + LADRF+4);
1490 buf[12] = readl(mmio + STAT0);
1491 }
1492
1493
1494 /*
1495 This function sets promiscuos mode, all-multi mode or the multicast address
1496 list to the device.
1497 */
1498 static void amd8111e_set_multicast_list(struct net_device *dev)
1499 {
1500 struct dev_mc_list* mc_ptr;
1501 struct amd8111e_priv *lp = netdev_priv(dev);
1502 u32 mc_filter[2] ;
1503 int i,bit_num;
1504 if(dev->flags & IFF_PROMISC){
1505 writel( VAL2 | PROM, lp->mmio + CMD2);
1506 return;
1507 }
1508 else
1509 writel( PROM, lp->mmio + CMD2);
1510 if(dev->flags & IFF_ALLMULTI || dev->mc_count > MAX_FILTER_SIZE){
1511 /* get all multicast packet */
1512 mc_filter[1] = mc_filter[0] = 0xffffffff;
1513 lp->mc_list = dev->mc_list;
1514 lp->options |= OPTION_MULTICAST_ENABLE;
1515 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1516 return;
1517 }
1518 if( dev->mc_count == 0 ){
1519 /* get only own packets */
1520 mc_filter[1] = mc_filter[0] = 0;
1521 lp->mc_list = NULL;
1522 lp->options &= ~OPTION_MULTICAST_ENABLE;
1523 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1524 /* disable promiscous mode */
1525 writel(PROM, lp->mmio + CMD2);
1526 return;
1527 }
1528 /* load all the multicast addresses in the logic filter */
1529 lp->options |= OPTION_MULTICAST_ENABLE;
1530 lp->mc_list = dev->mc_list;
1531 mc_filter[1] = mc_filter[0] = 0;
1532 for (i = 0, mc_ptr = dev->mc_list; mc_ptr && i < dev->mc_count;
1533 i++, mc_ptr = mc_ptr->next) {
1534 bit_num = (ether_crc_le(ETH_ALEN, mc_ptr->dmi_addr) >> 26) & 0x3f;
1535 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1536 }
1537 amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1538
1539 /* To eliminate PCI posting bug */
1540 readl(lp->mmio + CMD2);
1541
1542 }
1543
1544 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1545 {
1546 struct amd8111e_priv *lp = netdev_priv(dev);
1547 struct pci_dev *pci_dev = lp->pci_dev;
1548 strcpy (info->driver, MODULE_NAME);
1549 strcpy (info->version, MODULE_VERS);
1550 sprintf(info->fw_version,"%u",chip_version);
1551 strcpy (info->bus_info, pci_name(pci_dev));
1552 }
1553
1554 static int amd8111e_get_regs_len(struct net_device *dev)
1555 {
1556 return AMD8111E_REG_DUMP_LEN;
1557 }
1558
1559 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1560 {
1561 struct amd8111e_priv *lp = netdev_priv(dev);
1562 regs->version = 0;
1563 amd8111e_read_regs(lp, buf);
1564 }
1565
1566 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1567 {
1568 struct amd8111e_priv *lp = netdev_priv(dev);
1569 spin_lock_irq(&lp->lock);
1570 mii_ethtool_gset(&lp->mii_if, ecmd);
1571 spin_unlock_irq(&lp->lock);
1572 return 0;
1573 }
1574
1575 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1576 {
1577 struct amd8111e_priv *lp = netdev_priv(dev);
1578 int res;
1579 spin_lock_irq(&lp->lock);
1580 res = mii_ethtool_sset(&lp->mii_if, ecmd);
1581 spin_unlock_irq(&lp->lock);
1582 return res;
1583 }
1584
1585 static int amd8111e_nway_reset(struct net_device *dev)
1586 {
1587 struct amd8111e_priv *lp = netdev_priv(dev);
1588 return mii_nway_restart(&lp->mii_if);
1589 }
1590
1591 static u32 amd8111e_get_link(struct net_device *dev)
1592 {
1593 struct amd8111e_priv *lp = netdev_priv(dev);
1594 return mii_link_ok(&lp->mii_if);
1595 }
1596
1597 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1598 {
1599 struct amd8111e_priv *lp = netdev_priv(dev);
1600 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1601 if (lp->options & OPTION_WOL_ENABLE)
1602 wol_info->wolopts = WAKE_MAGIC;
1603 }
1604
1605 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1606 {
1607 struct amd8111e_priv *lp = netdev_priv(dev);
1608 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1609 return -EINVAL;
1610 spin_lock_irq(&lp->lock);
1611 if (wol_info->wolopts & WAKE_MAGIC)
1612 lp->options |=
1613 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1614 else if(wol_info->wolopts & WAKE_PHY)
1615 lp->options |=
1616 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1617 else
1618 lp->options &= ~OPTION_WOL_ENABLE;
1619 spin_unlock_irq(&lp->lock);
1620 return 0;
1621 }
1622
1623 static const struct ethtool_ops ops = {
1624 .get_drvinfo = amd8111e_get_drvinfo,
1625 .get_regs_len = amd8111e_get_regs_len,
1626 .get_regs = amd8111e_get_regs,
1627 .get_settings = amd8111e_get_settings,
1628 .set_settings = amd8111e_set_settings,
1629 .nway_reset = amd8111e_nway_reset,
1630 .get_link = amd8111e_get_link,
1631 .get_wol = amd8111e_get_wol,
1632 .set_wol = amd8111e_set_wol,
1633 };
1634
1635 /*
1636 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.
1637 */
1638
1639 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1640 {
1641 struct mii_ioctl_data *data = if_mii(ifr);
1642 struct amd8111e_priv *lp = netdev_priv(dev);
1643 int err;
1644 u32 mii_regval;
1645
1646 if (!capable(CAP_NET_ADMIN))
1647 return -EPERM;
1648
1649 switch(cmd) {
1650 case SIOCGMIIPHY:
1651 data->phy_id = lp->ext_phy_addr;
1652
1653 /* fallthru */
1654 case SIOCGMIIREG:
1655
1656 spin_lock_irq(&lp->lock);
1657 err = amd8111e_read_phy(lp, data->phy_id,
1658 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1659 spin_unlock_irq(&lp->lock);
1660
1661 data->val_out = mii_regval;
1662 return err;
1663
1664 case SIOCSMIIREG:
1665
1666 spin_lock_irq(&lp->lock);
1667 err = amd8111e_write_phy(lp, data->phy_id,
1668 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1669 spin_unlock_irq(&lp->lock);
1670
1671 return err;
1672
1673 default:
1674 /* do nothing */
1675 break;
1676 }
1677 return -EOPNOTSUPP;
1678 }
1679 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1680 {
1681 struct amd8111e_priv *lp = netdev_priv(dev);
1682 int i;
1683 struct sockaddr *addr = p;
1684
1685 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1686 spin_lock_irq(&lp->lock);
1687 /* Setting the MAC address to the device */
1688 for(i = 0; i < ETH_ADDR_LEN; i++)
1689 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1690
1691 spin_unlock_irq(&lp->lock);
1692
1693 return 0;
1694 }
1695
1696 /*
1697 This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers.
1698 */
1699 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1700 {
1701 struct amd8111e_priv *lp = netdev_priv(dev);
1702 int err;
1703
1704 if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1705 return -EINVAL;
1706
1707 if (!netif_running(dev)) {
1708 /* new_mtu will be used
1709 when device starts netxt time */
1710 dev->mtu = new_mtu;
1711 return 0;
1712 }
1713
1714 spin_lock_irq(&lp->lock);
1715
1716 /* stop the chip */
1717 writel(RUN, lp->mmio + CMD0);
1718
1719 dev->mtu = new_mtu;
1720
1721 err = amd8111e_restart(dev);
1722 spin_unlock_irq(&lp->lock);
1723 if(!err)
1724 netif_start_queue(dev);
1725 return err;
1726 }
1727
1728 #if AMD8111E_VLAN_TAG_USED
1729 static void amd8111e_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1730 {
1731 struct amd8111e_priv *lp = netdev_priv(dev);
1732 spin_lock_irq(&lp->lock);
1733 lp->vlgrp = grp;
1734 spin_unlock_irq(&lp->lock);
1735 }
1736
1737 static void amd8111e_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1738 {
1739 struct amd8111e_priv *lp = netdev_priv(dev);
1740 spin_lock_irq(&lp->lock);
1741 if (lp->vlgrp)
1742 lp->vlgrp->vlan_devices[vid] = NULL;
1743 spin_unlock_irq(&lp->lock);
1744 }
1745 #endif
1746 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1747 {
1748 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1749 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1750
1751 /* To eliminate PCI posting bug */
1752 readl(lp->mmio + CMD7);
1753 return 0;
1754 }
1755
1756 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1757 {
1758
1759 /* Adapter is already stoped/suspended/interrupt-disabled */
1760 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1761
1762 /* To eliminate PCI posting bug */
1763 readl(lp->mmio + CMD7);
1764 return 0;
1765 }
1766 /* 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 */
1767
1768 static void amd8111e_tx_timeout(struct net_device *dev)
1769 {
1770 struct amd8111e_priv* lp = netdev_priv(dev);
1771 int err;
1772
1773 printk(KERN_ERR "%s: transmit timed out, resetting\n",
1774 dev->name);
1775 spin_lock_irq(&lp->lock);
1776 err = amd8111e_restart(dev);
1777 spin_unlock_irq(&lp->lock);
1778 if(!err)
1779 netif_wake_queue(dev);
1780 }
1781 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1782 {
1783 struct net_device *dev = pci_get_drvdata(pci_dev);
1784 struct amd8111e_priv *lp = netdev_priv(dev);
1785
1786 if (!netif_running(dev))
1787 return 0;
1788
1789 /* disable the interrupt */
1790 spin_lock_irq(&lp->lock);
1791 amd8111e_disable_interrupt(lp);
1792 spin_unlock_irq(&lp->lock);
1793
1794 netif_device_detach(dev);
1795
1796 /* stop chip */
1797 spin_lock_irq(&lp->lock);
1798 if(lp->options & OPTION_DYN_IPG_ENABLE)
1799 del_timer_sync(&lp->ipg_data.ipg_timer);
1800 amd8111e_stop_chip(lp);
1801 spin_unlock_irq(&lp->lock);
1802
1803 if(lp->options & OPTION_WOL_ENABLE){
1804 /* enable wol */
1805 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1806 amd8111e_enable_magicpkt(lp);
1807 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1808 amd8111e_enable_link_change(lp);
1809
1810 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1811 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1812
1813 }
1814 else{
1815 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1816 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1817 }
1818
1819 pci_save_state(pci_dev);
1820 pci_set_power_state(pci_dev, PCI_D3hot);
1821
1822 return 0;
1823 }
1824 static int amd8111e_resume(struct pci_dev *pci_dev)
1825 {
1826 struct net_device *dev = pci_get_drvdata(pci_dev);
1827 struct amd8111e_priv *lp = netdev_priv(dev);
1828
1829 if (!netif_running(dev))
1830 return 0;
1831
1832 pci_set_power_state(pci_dev, PCI_D0);
1833 pci_restore_state(pci_dev);
1834
1835 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1836 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1837
1838 netif_device_attach(dev);
1839
1840 spin_lock_irq(&lp->lock);
1841 amd8111e_restart(dev);
1842 /* Restart ipg timer */
1843 if(lp->options & OPTION_DYN_IPG_ENABLE)
1844 mod_timer(&lp->ipg_data.ipg_timer,
1845 jiffies + IPG_CONVERGE_JIFFIES);
1846 spin_unlock_irq(&lp->lock);
1847
1848 return 0;
1849 }
1850
1851
1852 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1853 {
1854 struct net_device *dev = pci_get_drvdata(pdev);
1855 if (dev) {
1856 unregister_netdev(dev);
1857 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1858 free_netdev(dev);
1859 pci_release_regions(pdev);
1860 pci_disable_device(pdev);
1861 pci_set_drvdata(pdev, NULL);
1862 }
1863 }
1864 static void amd8111e_config_ipg(struct net_device* dev)
1865 {
1866 struct amd8111e_priv *lp = netdev_priv(dev);
1867 struct ipg_info* ipg_data = &lp->ipg_data;
1868 void __iomem *mmio = lp->mmio;
1869 unsigned int prev_col_cnt = ipg_data->col_cnt;
1870 unsigned int total_col_cnt;
1871 unsigned int tmp_ipg;
1872
1873 if(lp->link_config.duplex == DUPLEX_FULL){
1874 ipg_data->ipg = DEFAULT_IPG;
1875 return;
1876 }
1877
1878 if(ipg_data->ipg_state == SSTATE){
1879
1880 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1881
1882 ipg_data->timer_tick = 0;
1883 ipg_data->ipg = MIN_IPG - IPG_STEP;
1884 ipg_data->current_ipg = MIN_IPG;
1885 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1886 ipg_data->ipg_state = CSTATE;
1887 }
1888 else
1889 ipg_data->timer_tick++;
1890 }
1891
1892 if(ipg_data->ipg_state == CSTATE){
1893
1894 /* Get the current collision count */
1895
1896 total_col_cnt = ipg_data->col_cnt =
1897 amd8111e_read_mib(mmio, xmt_collisions);
1898
1899 if ((total_col_cnt - prev_col_cnt) <
1900 (ipg_data->diff_col_cnt)){
1901
1902 ipg_data->diff_col_cnt =
1903 total_col_cnt - prev_col_cnt ;
1904
1905 ipg_data->ipg = ipg_data->current_ipg;
1906 }
1907
1908 ipg_data->current_ipg += IPG_STEP;
1909
1910 if (ipg_data->current_ipg <= MAX_IPG)
1911 tmp_ipg = ipg_data->current_ipg;
1912 else{
1913 tmp_ipg = ipg_data->ipg;
1914 ipg_data->ipg_state = SSTATE;
1915 }
1916 writew((u32)tmp_ipg, mmio + IPG);
1917 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1918 }
1919 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1920 return;
1921
1922 }
1923
1924 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1925 {
1926 struct amd8111e_priv *lp = netdev_priv(dev);
1927 int i;
1928
1929 for (i = 0x1e; i >= 0; i--) {
1930 u32 id1, id2;
1931
1932 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1933 continue;
1934 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1935 continue;
1936 lp->ext_phy_id = (id1 << 16) | id2;
1937 lp->ext_phy_addr = i;
1938 return;
1939 }
1940 lp->ext_phy_id = 0;
1941 lp->ext_phy_addr = 1;
1942 }
1943
1944 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1945 const struct pci_device_id *ent)
1946 {
1947 int err,i,pm_cap;
1948 unsigned long reg_addr,reg_len;
1949 struct amd8111e_priv* lp;
1950 struct net_device* dev;
1951
1952 err = pci_enable_device(pdev);
1953 if(err){
1954 printk(KERN_ERR "amd8111e: Cannot enable new PCI device,"
1955 "exiting.\n");
1956 return err;
1957 }
1958
1959 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1960 printk(KERN_ERR "amd8111e: Cannot find PCI base address"
1961 "exiting.\n");
1962 err = -ENODEV;
1963 goto err_disable_pdev;
1964 }
1965
1966 err = pci_request_regions(pdev, MODULE_NAME);
1967 if(err){
1968 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1969 "exiting.\n");
1970 goto err_disable_pdev;
1971 }
1972
1973 pci_set_master(pdev);
1974
1975 /* Find power-management capability. */
1976 if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
1977 printk(KERN_ERR "amd8111e: No Power Management capability, "
1978 "exiting.\n");
1979 goto err_free_reg;
1980 }
1981
1982 /* Initialize DMA */
1983 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) < 0) {
1984 printk(KERN_ERR "amd8111e: DMA not supported,"
1985 "exiting.\n");
1986 goto err_free_reg;
1987 }
1988
1989 reg_addr = pci_resource_start(pdev, 0);
1990 reg_len = pci_resource_len(pdev, 0);
1991
1992 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1993 if (!dev) {
1994 printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n");
1995 err = -ENOMEM;
1996 goto err_free_reg;
1997 }
1998
1999 SET_MODULE_OWNER(dev);
2000 SET_NETDEV_DEV(dev, &pdev->dev);
2001
2002 #if AMD8111E_VLAN_TAG_USED
2003 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
2004 dev->vlan_rx_register =amd8111e_vlan_rx_register;
2005 dev->vlan_rx_kill_vid = amd8111e_vlan_rx_kill_vid;
2006 #endif
2007
2008 lp = netdev_priv(dev);
2009 lp->pci_dev = pdev;
2010 lp->amd8111e_net_dev = dev;
2011 lp->pm_cap = pm_cap;
2012
2013 spin_lock_init(&lp->lock);
2014
2015 lp->mmio = ioremap(reg_addr, reg_len);
2016 if (lp->mmio == 0) {
2017 printk(KERN_ERR "amd8111e: Cannot map device registers, "
2018 "exiting\n");
2019 err = -ENOMEM;
2020 goto err_free_dev;
2021 }
2022
2023 /* Initializing MAC address */
2024 for(i = 0; i < ETH_ADDR_LEN; i++)
2025 dev->dev_addr[i] =readb(lp->mmio + PADR + i);
2026
2027 /* Setting user defined parametrs */
2028 lp->ext_phy_option = speed_duplex[card_idx];
2029 if(coalesce[card_idx])
2030 lp->options |= OPTION_INTR_COAL_ENABLE;
2031 if(dynamic_ipg[card_idx++])
2032 lp->options |= OPTION_DYN_IPG_ENABLE;
2033
2034 /* Initialize driver entry points */
2035 dev->open = amd8111e_open;
2036 dev->hard_start_xmit = amd8111e_start_xmit;
2037 dev->stop = amd8111e_close;
2038 dev->get_stats = amd8111e_get_stats;
2039 dev->set_multicast_list = amd8111e_set_multicast_list;
2040 dev->set_mac_address = amd8111e_set_mac_address;
2041 dev->do_ioctl = amd8111e_ioctl;
2042 dev->change_mtu = amd8111e_change_mtu;
2043 SET_ETHTOOL_OPS(dev, &ops);
2044 dev->irq =pdev->irq;
2045 dev->tx_timeout = amd8111e_tx_timeout;
2046 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
2047 #ifdef CONFIG_AMD8111E_NAPI
2048 dev->poll = amd8111e_rx_poll;
2049 dev->weight = 32;
2050 #endif
2051 #ifdef CONFIG_NET_POLL_CONTROLLER
2052 dev->poll_controller = amd8111e_poll;
2053 #endif
2054
2055 #if AMD8111E_VLAN_TAG_USED
2056 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2057 dev->vlan_rx_register =amd8111e_vlan_rx_register;
2058 dev->vlan_rx_kill_vid = amd8111e_vlan_rx_kill_vid;
2059 #endif
2060 /* Probe the external PHY */
2061 amd8111e_probe_ext_phy(dev);
2062
2063 /* setting mii default values */
2064 lp->mii_if.dev = dev;
2065 lp->mii_if.mdio_read = amd8111e_mdio_read;
2066 lp->mii_if.mdio_write = amd8111e_mdio_write;
2067 lp->mii_if.phy_id = lp->ext_phy_addr;
2068
2069 /* Set receive buffer length and set jumbo option*/
2070 amd8111e_set_rx_buff_len(dev);
2071
2072
2073 err = register_netdev(dev);
2074 if (err) {
2075 printk(KERN_ERR "amd8111e: Cannot register net device, "
2076 "exiting.\n");
2077 goto err_iounmap;
2078 }
2079
2080 pci_set_drvdata(pdev, dev);
2081
2082 /* Initialize software ipg timer */
2083 if(lp->options & OPTION_DYN_IPG_ENABLE){
2084 init_timer(&lp->ipg_data.ipg_timer);
2085 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
2086 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
2087 lp->ipg_data.ipg_timer.expires = jiffies +
2088 IPG_CONVERGE_JIFFIES;
2089 lp->ipg_data.ipg = DEFAULT_IPG;
2090 lp->ipg_data.ipg_state = CSTATE;
2091 };
2092
2093 /* display driver and device information */
2094
2095 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
2096 printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n", dev->name,MODULE_VERS);
2097 printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet ", dev->name, chip_version);
2098 for (i = 0; i < 6; i++)
2099 printk("%2.2x%c",dev->dev_addr[i],i == 5 ? ' ' : ':');
2100 printk( "\n");
2101 if (lp->ext_phy_id)
2102 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
2103 dev->name, lp->ext_phy_id, lp->ext_phy_addr);
2104 else
2105 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
2106 dev->name);
2107 return 0;
2108 err_iounmap:
2109 iounmap(lp->mmio);
2110
2111 err_free_dev:
2112 free_netdev(dev);
2113
2114 err_free_reg:
2115 pci_release_regions(pdev);
2116
2117 err_disable_pdev:
2118 pci_disable_device(pdev);
2119 pci_set_drvdata(pdev, NULL);
2120 return err;
2121
2122 }
2123
2124 static struct pci_driver amd8111e_driver = {
2125 .name = MODULE_NAME,
2126 .id_table = amd8111e_pci_tbl,
2127 .probe = amd8111e_probe_one,
2128 .remove = __devexit_p(amd8111e_remove_one),
2129 .suspend = amd8111e_suspend,
2130 .resume = amd8111e_resume
2131 };
2132
2133 static int __init amd8111e_init(void)
2134 {
2135 return pci_register_driver(&amd8111e_driver);
2136 }
2137
2138 static void __exit amd8111e_cleanup(void)
2139 {
2140 pci_unregister_driver(&amd8111e_driver);
2141 }
2142
2143 module_init(amd8111e_init);
2144 module_exit(amd8111e_cleanup);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree