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/io.h>
92 #include <asm/byteorder.h>
93 #include <asm/uaccess.h>
94
95 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
96 #define AMD8111E_VLAN_TAG_USED 1
97 #else
98 #define AMD8111E_VLAN_TAG_USED 0
99 #endif
100
101 #include "amd8111e.h"
102 #define MODULE_NAME "amd8111e"
103 #define MODULE_VERS "3.0.7"
104 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
105 MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version "MODULE_VERS);
106 MODULE_LICENSE("GPL");
107 MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
108 module_param_array(speed_duplex, int, NULL, 0);
109 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");
110 module_param_array(coalesce, bool, NULL, 0);
111 MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
112 module_param_array(dynamic_ipg, bool, NULL, 0);
113 MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
114
115 static DEFINE_PCI_DEVICE_TABLE(amd8111e_pci_tbl) = {
116
117 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD8111E_7462,
118 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
119 { 0, }
120
121 };
122 /*
123 This function will read the PHY registers.
124 */
amd8111e_read_phy(struct amd8111e_priv * lp,int phy_id,int reg,u32 * val)125 static int amd8111e_read_phy(struct amd8111e_priv* lp, int phy_id, int reg, u32* val)
126 {
127 void __iomem *mmio = lp->mmio;
128 unsigned int reg_val;
129 unsigned int repeat= REPEAT_CNT;
130
131 reg_val = readl(mmio + PHY_ACCESS);
132 while (reg_val & PHY_CMD_ACTIVE)
133 reg_val = readl( mmio + PHY_ACCESS );
134
135 writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
136 ((reg & 0x1f) << 16), mmio +PHY_ACCESS);
137 do{
138 reg_val = readl(mmio + PHY_ACCESS);
139 udelay(30); /* It takes 30 us to read/write data */
140 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
141 if(reg_val & PHY_RD_ERR)
142 goto err_phy_read;
143
144 *val = reg_val & 0xffff;
145 return 0;
146 err_phy_read:
147 *val = 0;
148 return -EINVAL;
149
150 }
151
152 /*
153 This function will write into PHY registers.
154 */
amd8111e_write_phy(struct amd8111e_priv * lp,int phy_id,int reg,u32 val)155 static int amd8111e_write_phy(struct amd8111e_priv* lp,int phy_id, int reg, u32 val)
156 {
157 unsigned int repeat = REPEAT_CNT;
158 void __iomem *mmio = lp->mmio;
159 unsigned int reg_val;
160
161 reg_val = readl(mmio + PHY_ACCESS);
162 while (reg_val & PHY_CMD_ACTIVE)
163 reg_val = readl( mmio + PHY_ACCESS );
164
165 writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
166 ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
167
168 do{
169 reg_val = readl(mmio + PHY_ACCESS);
170 udelay(30); /* It takes 30 us to read/write the data */
171 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
172
173 if(reg_val & PHY_RD_ERR)
174 goto err_phy_write;
175
176 return 0;
177
178 err_phy_write:
179 return -EINVAL;
180
181 }
182 /*
183 This is the mii register read function provided to the mii interface.
184 */
amd8111e_mdio_read(struct net_device * dev,int phy_id,int reg_num)185 static int amd8111e_mdio_read(struct net_device * dev, int phy_id, int reg_num)
186 {
187 struct amd8111e_priv* lp = netdev_priv(dev);
188 unsigned int reg_val;
189
190 amd8111e_read_phy(lp,phy_id,reg_num,®_val);
191 return reg_val;
192
193 }
194
195 /*
196 This is the mii register write function provided to the mii interface.
197 */
amd8111e_mdio_write(struct net_device * dev,int phy_id,int reg_num,int val)198 static void amd8111e_mdio_write(struct net_device * dev, int phy_id, int reg_num, int val)
199 {
200 struct amd8111e_priv* lp = netdev_priv(dev);
201
202 amd8111e_write_phy(lp, phy_id, reg_num, val);
203 }
204
205 /*
206 This function will set PHY speed. During initialization sets the original speed to 100 full.
207 */
amd8111e_set_ext_phy(struct net_device * dev)208 static void amd8111e_set_ext_phy(struct net_device *dev)
209 {
210 struct amd8111e_priv *lp = netdev_priv(dev);
211 u32 bmcr,advert,tmp;
212
213 /* Determine mii register values to set the speed */
214 advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
215 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
216 switch (lp->ext_phy_option){
217
218 default:
219 case SPEED_AUTONEG: /* advertise all values */
220 tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
221 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
222 break;
223 case SPEED10_HALF:
224 tmp |= ADVERTISE_10HALF;
225 break;
226 case SPEED10_FULL:
227 tmp |= ADVERTISE_10FULL;
228 break;
229 case SPEED100_HALF:
230 tmp |= ADVERTISE_100HALF;
231 break;
232 case SPEED100_FULL:
233 tmp |= ADVERTISE_100FULL;
234 break;
235 }
236
237 if(advert != tmp)
238 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
239 /* Restart auto negotiation */
240 bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
241 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
242 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
243
244 }
245
246 /*
247 This function will unmap skb->data space and will free
248 all transmit and receive skbuffs.
249 */
amd8111e_free_skbs(struct net_device * dev)250 static int amd8111e_free_skbs(struct net_device *dev)
251 {
252 struct amd8111e_priv *lp = netdev_priv(dev);
253 struct sk_buff* rx_skbuff;
254 int i;
255
256 /* Freeing transmit skbs */
257 for(i = 0; i < NUM_TX_BUFFERS; i++){
258 if(lp->tx_skbuff[i]){
259 pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i], lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE);
260 dev_kfree_skb (lp->tx_skbuff[i]);
261 lp->tx_skbuff[i] = NULL;
262 lp->tx_dma_addr[i] = 0;
263 }
264 }
265 /* Freeing previously allocated receive buffers */
266 for (i = 0; i < NUM_RX_BUFFERS; i++){
267 rx_skbuff = lp->rx_skbuff[i];
268 if(rx_skbuff != NULL){
269 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i],
270 lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE);
271 dev_kfree_skb(lp->rx_skbuff[i]);
272 lp->rx_skbuff[i] = NULL;
273 lp->rx_dma_addr[i] = 0;
274 }
275 }
276
277 return 0;
278 }
279
280 /*
281 This will set the receive buffer length corresponding to the mtu size of networkinterface.
282 */
amd8111e_set_rx_buff_len(struct net_device * dev)283 static inline void amd8111e_set_rx_buff_len(struct net_device* dev)
284 {
285 struct amd8111e_priv* lp = netdev_priv(dev);
286 unsigned int mtu = dev->mtu;
287
288 if (mtu > ETH_DATA_LEN){
289 /* MTU + ethernet header + FCS
290 + optional VLAN tag + skb reserve space 2 */
291
292 lp->rx_buff_len = mtu + ETH_HLEN + 10;
293 lp->options |= OPTION_JUMBO_ENABLE;
294 } else{
295 lp->rx_buff_len = PKT_BUFF_SZ;
296 lp->options &= ~OPTION_JUMBO_ENABLE;
297 }
298 }
299
300 /*
301 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.
302 */
amd8111e_init_ring(struct net_device * dev)303 static int amd8111e_init_ring(struct net_device *dev)
304 {
305 struct amd8111e_priv *lp = netdev_priv(dev);
306 int i;
307
308 lp->rx_idx = lp->tx_idx = 0;
309 lp->tx_complete_idx = 0;
310 lp->tx_ring_idx = 0;
311
312
313 if(lp->opened)
314 /* Free previously allocated transmit and receive skbs */
315 amd8111e_free_skbs(dev);
316
317 else{
318 /* allocate the tx and rx descriptors */
319 if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
320 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
321 &lp->tx_ring_dma_addr)) == NULL)
322
323 goto err_no_mem;
324
325 if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
326 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
327 &lp->rx_ring_dma_addr)) == NULL)
328
329 goto err_free_tx_ring;
330
331 }
332 /* Set new receive buff size */
333 amd8111e_set_rx_buff_len(dev);
334
335 /* Allocating receive skbs */
336 for (i = 0; i < NUM_RX_BUFFERS; i++) {
337
338 lp->rx_skbuff[i] = netdev_alloc_skb(dev, lp->rx_buff_len);
339 if (!lp->rx_skbuff[i]) {
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 */
amd8111e_set_coalesce(struct net_device * dev,enum coal_mode cmod)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 */
amd8111e_restart(struct net_device * dev)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_ALEN; 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 */
amd8111e_init_hw_default(struct amd8111e_priv * lp)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 */
amd8111e_disable_interrupt(struct amd8111e_priv * lp)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 */
amd8111e_stop_chip(struct amd8111e_priv * lp)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 */
amd8111e_free_ring(struct amd8111e_priv * lp)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 */
amd8111e_tx(struct net_device * dev)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 */
amd8111e_rx_poll(struct napi_struct * napi,int budget)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 new_skb = netdev_alloc_skb(dev, lp->rx_buff_len);
772 if (!new_skb) {
773 /* if allocation fail,
774 ignore that pkt and go to next one */
775 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
776 lp->drv_rx_errors++;
777 goto err_next_pkt;
778 }
779
780 skb_reserve(new_skb, 2);
781 skb = lp->rx_skbuff[rx_index];
782 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
783 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
784 skb_put(skb, pkt_len);
785 lp->rx_skbuff[rx_index] = new_skb;
786 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
787 new_skb->data,
788 lp->rx_buff_len-2,
789 PCI_DMA_FROMDEVICE);
790
791 skb->protocol = eth_type_trans(skb, dev);
792
793 #if AMD8111E_VLAN_TAG_USED
794 if (vtag == TT_VLAN_TAGGED){
795 u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
796 __vlan_hwaccel_put_tag(skb, vlan_tag);
797 }
798 #endif
799 netif_receive_skb(skb);
800 /*COAL update rx coalescing parameters*/
801 lp->coal_conf.rx_packets++;
802 lp->coal_conf.rx_bytes += pkt_len;
803 num_rx_pkt++;
804
805 err_next_pkt:
806 lp->rx_ring[rx_index].buff_phy_addr
807 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
808 lp->rx_ring[rx_index].buff_count =
809 cpu_to_le16(lp->rx_buff_len-2);
810 wmb();
811 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
812 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
813 }
814 /* Check the interrupt status register for more packets in the
815 mean time. Process them since we have not used up our quota.*/
816
817 intr0 = readl(mmio + INT0);
818 /*Ack receive packets */
819 writel(intr0 & RINT0,mmio + INT0);
820
821 } while(intr0 & RINT0);
822
823 if (rx_pkt_limit > 0) {
824 /* Receive descriptor is empty now */
825 spin_lock_irqsave(&lp->lock, flags);
826 __napi_complete(napi);
827 writel(VAL0|RINTEN0, mmio + INTEN0);
828 writel(VAL2 | RDMD0, mmio + CMD0);
829 spin_unlock_irqrestore(&lp->lock, flags);
830 }
831
832 rx_not_empty:
833 return num_rx_pkt;
834 }
835
836 /*
837 This function will indicate the link status to the kernel.
838 */
amd8111e_link_change(struct net_device * dev)839 static int amd8111e_link_change(struct net_device* dev)
840 {
841 struct amd8111e_priv *lp = netdev_priv(dev);
842 int status0,speed;
843
844 /* read the link change */
845 status0 = readl(lp->mmio + STAT0);
846
847 if(status0 & LINK_STATS){
848 if(status0 & AUTONEG_COMPLETE)
849 lp->link_config.autoneg = AUTONEG_ENABLE;
850 else
851 lp->link_config.autoneg = AUTONEG_DISABLE;
852
853 if(status0 & FULL_DPLX)
854 lp->link_config.duplex = DUPLEX_FULL;
855 else
856 lp->link_config.duplex = DUPLEX_HALF;
857 speed = (status0 & SPEED_MASK) >> 7;
858 if(speed == PHY_SPEED_10)
859 lp->link_config.speed = SPEED_10;
860 else if(speed == PHY_SPEED_100)
861 lp->link_config.speed = SPEED_100;
862
863 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name,
864 (lp->link_config.speed == SPEED_100) ? "100": "10",
865 (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
866 netif_carrier_on(dev);
867 }
868 else{
869 lp->link_config.speed = SPEED_INVALID;
870 lp->link_config.duplex = DUPLEX_INVALID;
871 lp->link_config.autoneg = AUTONEG_INVALID;
872 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
873 netif_carrier_off(dev);
874 }
875
876 return 0;
877 }
878 /*
879 This function reads the mib counters.
880 */
amd8111e_read_mib(void __iomem * mmio,u8 MIB_COUNTER)881 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
882 {
883 unsigned int status;
884 unsigned int data;
885 unsigned int repeat = REPEAT_CNT;
886
887 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
888 do {
889 status = readw(mmio + MIB_ADDR);
890 udelay(2); /* controller takes MAX 2 us to get mib data */
891 }
892 while (--repeat && (status & MIB_CMD_ACTIVE));
893
894 data = readl(mmio + MIB_DATA);
895 return data;
896 }
897
898 /*
899 * This function reads the mib registers and returns the hardware statistics.
900 * It updates previous internal driver statistics with new values.
901 */
amd8111e_get_stats(struct net_device * dev)902 static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
903 {
904 struct amd8111e_priv *lp = netdev_priv(dev);
905 void __iomem *mmio = lp->mmio;
906 unsigned long flags;
907 struct net_device_stats *new_stats = &dev->stats;
908
909 if (!lp->opened)
910 return new_stats;
911 spin_lock_irqsave (&lp->lock, flags);
912
913 /* stats.rx_packets */
914 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
915 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
916 amd8111e_read_mib(mmio, rcv_unicast_pkts);
917
918 /* stats.tx_packets */
919 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
920
921 /*stats.rx_bytes */
922 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
923
924 /* stats.tx_bytes */
925 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
926
927 /* stats.rx_errors */
928 /* hw errors + errors driver reported */
929 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
930 amd8111e_read_mib(mmio, rcv_fragments)+
931 amd8111e_read_mib(mmio, rcv_jabbers)+
932 amd8111e_read_mib(mmio, rcv_alignment_errors)+
933 amd8111e_read_mib(mmio, rcv_fcs_errors)+
934 amd8111e_read_mib(mmio, rcv_miss_pkts)+
935 lp->drv_rx_errors;
936
937 /* stats.tx_errors */
938 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
939
940 /* stats.rx_dropped*/
941 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
942
943 /* stats.tx_dropped*/
944 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
945
946 /* stats.multicast*/
947 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
948
949 /* stats.collisions*/
950 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
951
952 /* stats.rx_length_errors*/
953 new_stats->rx_length_errors =
954 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
955 amd8111e_read_mib(mmio, rcv_oversize_pkts);
956
957 /* stats.rx_over_errors*/
958 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
959
960 /* stats.rx_crc_errors*/
961 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
962
963 /* stats.rx_frame_errors*/
964 new_stats->rx_frame_errors =
965 amd8111e_read_mib(mmio, rcv_alignment_errors);
966
967 /* stats.rx_fifo_errors */
968 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
969
970 /* stats.rx_missed_errors */
971 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
972
973 /* stats.tx_aborted_errors*/
974 new_stats->tx_aborted_errors =
975 amd8111e_read_mib(mmio, xmt_excessive_collision);
976
977 /* stats.tx_carrier_errors*/
978 new_stats->tx_carrier_errors =
979 amd8111e_read_mib(mmio, xmt_loss_carrier);
980
981 /* stats.tx_fifo_errors*/
982 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
983
984 /* stats.tx_window_errors*/
985 new_stats->tx_window_errors =
986 amd8111e_read_mib(mmio, xmt_late_collision);
987
988 /* Reset the mibs for collecting new statistics */
989 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
990
991 spin_unlock_irqrestore (&lp->lock, flags);
992
993 return new_stats;
994 }
995 /* This function recalculate the interrupt coalescing mode on every interrupt
996 according to the datarate and the packet rate.
997 */
amd8111e_calc_coalesce(struct net_device * dev)998 static int amd8111e_calc_coalesce(struct net_device *dev)
999 {
1000 struct amd8111e_priv *lp = netdev_priv(dev);
1001 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1002 int tx_pkt_rate;
1003 int rx_pkt_rate;
1004 int tx_data_rate;
1005 int rx_data_rate;
1006 int rx_pkt_size;
1007 int tx_pkt_size;
1008
1009 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1010 coal_conf->tx_prev_packets = coal_conf->tx_packets;
1011
1012 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1013 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
1014
1015 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1016 coal_conf->rx_prev_packets = coal_conf->rx_packets;
1017
1018 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1019 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
1020
1021 if(rx_pkt_rate < 800){
1022 if(coal_conf->rx_coal_type != NO_COALESCE){
1023
1024 coal_conf->rx_timeout = 0x0;
1025 coal_conf->rx_event_count = 0;
1026 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1027 coal_conf->rx_coal_type = NO_COALESCE;
1028 }
1029 }
1030 else{
1031
1032 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1033 if (rx_pkt_size < 128){
1034 if(coal_conf->rx_coal_type != NO_COALESCE){
1035
1036 coal_conf->rx_timeout = 0;
1037 coal_conf->rx_event_count = 0;
1038 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1039 coal_conf->rx_coal_type = NO_COALESCE;
1040 }
1041
1042 }
1043 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1044
1045 if(coal_conf->rx_coal_type != LOW_COALESCE){
1046 coal_conf->rx_timeout = 1;
1047 coal_conf->rx_event_count = 4;
1048 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1049 coal_conf->rx_coal_type = LOW_COALESCE;
1050 }
1051 }
1052 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1053
1054 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1055 coal_conf->rx_timeout = 1;
1056 coal_conf->rx_event_count = 4;
1057 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1058 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1059 }
1060
1061 }
1062 else if(rx_pkt_size >= 1024){
1063 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1064 coal_conf->rx_timeout = 2;
1065 coal_conf->rx_event_count = 3;
1066 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1067 coal_conf->rx_coal_type = HIGH_COALESCE;
1068 }
1069 }
1070 }
1071 /* NOW FOR TX INTR COALESC */
1072 if(tx_pkt_rate < 800){
1073 if(coal_conf->tx_coal_type != NO_COALESCE){
1074
1075 coal_conf->tx_timeout = 0x0;
1076 coal_conf->tx_event_count = 0;
1077 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1078 coal_conf->tx_coal_type = NO_COALESCE;
1079 }
1080 }
1081 else{
1082
1083 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1084 if (tx_pkt_size < 128){
1085
1086 if(coal_conf->tx_coal_type != NO_COALESCE){
1087
1088 coal_conf->tx_timeout = 0;
1089 coal_conf->tx_event_count = 0;
1090 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1091 coal_conf->tx_coal_type = NO_COALESCE;
1092 }
1093
1094 }
1095 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1096
1097 if(coal_conf->tx_coal_type != LOW_COALESCE){
1098 coal_conf->tx_timeout = 1;
1099 coal_conf->tx_event_count = 2;
1100 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1101 coal_conf->tx_coal_type = LOW_COALESCE;
1102
1103 }
1104 }
1105 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1106
1107 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1108 coal_conf->tx_timeout = 2;
1109 coal_conf->tx_event_count = 5;
1110 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1111 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1112 }
1113
1114 }
1115 else if(tx_pkt_size >= 1024){
1116 if (tx_pkt_size >= 1024){
1117 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1118 coal_conf->tx_timeout = 4;
1119 coal_conf->tx_event_count = 8;
1120 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1121 coal_conf->tx_coal_type = HIGH_COALESCE;
1122 }
1123 }
1124 }
1125 }
1126 return 0;
1127
1128 }
1129 /*
1130 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1131 */
amd8111e_interrupt(int irq,void * dev_id)1132 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1133 {
1134
1135 struct net_device * dev = (struct net_device *) dev_id;
1136 struct amd8111e_priv *lp = netdev_priv(dev);
1137 void __iomem *mmio = lp->mmio;
1138 unsigned int intr0, intren0;
1139 unsigned int handled = 1;
1140
1141 if(unlikely(dev == NULL))
1142 return IRQ_NONE;
1143
1144 spin_lock(&lp->lock);
1145
1146 /* disabling interrupt */
1147 writel(INTREN, mmio + CMD0);
1148
1149 /* Read interrupt status */
1150 intr0 = readl(mmio + INT0);
1151 intren0 = readl(mmio + INTEN0);
1152
1153 /* Process all the INT event until INTR bit is clear. */
1154
1155 if (!(intr0 & INTR)){
1156 handled = 0;
1157 goto err_no_interrupt;
1158 }
1159
1160 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1161 writel(intr0, mmio + INT0);
1162
1163 /* Check if Receive Interrupt has occurred. */
1164 if (intr0 & RINT0) {
1165 if (napi_schedule_prep(&lp->napi)) {
1166 /* Disable receive interupts */
1167 writel(RINTEN0, mmio + INTEN0);
1168 /* Schedule a polling routine */
1169 __napi_schedule(&lp->napi);
1170 } else if (intren0 & RINTEN0) {
1171 printk("************Driver bug! interrupt while in poll\n");
1172 /* Fix by disable receive interrupts */
1173 writel(RINTEN0, mmio + INTEN0);
1174 }
1175 }
1176
1177 /* Check if Transmit Interrupt has occurred. */
1178 if (intr0 & TINT0)
1179 amd8111e_tx(dev);
1180
1181 /* Check if Link Change Interrupt has occurred. */
1182 if (intr0 & LCINT)
1183 amd8111e_link_change(dev);
1184
1185 /* Check if Hardware Timer Interrupt has occurred. */
1186 if (intr0 & STINT)
1187 amd8111e_calc_coalesce(dev);
1188
1189 err_no_interrupt:
1190 writel( VAL0 | INTREN,mmio + CMD0);
1191
1192 spin_unlock(&lp->lock);
1193
1194 return IRQ_RETVAL(handled);
1195 }
1196
1197 #ifdef CONFIG_NET_POLL_CONTROLLER
amd8111e_poll(struct net_device * dev)1198 static void amd8111e_poll(struct net_device *dev)
1199 {
1200 unsigned long flags;
1201 local_irq_save(flags);
1202 amd8111e_interrupt(0, dev);
1203 local_irq_restore(flags);
1204 }
1205 #endif
1206
1207
1208 /*
1209 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1210 */
amd8111e_close(struct net_device * dev)1211 static int amd8111e_close(struct net_device * dev)
1212 {
1213 struct amd8111e_priv *lp = netdev_priv(dev);
1214 netif_stop_queue(dev);
1215
1216 napi_disable(&lp->napi);
1217
1218 spin_lock_irq(&lp->lock);
1219
1220 amd8111e_disable_interrupt(lp);
1221 amd8111e_stop_chip(lp);
1222
1223 /* Free transmit and receive skbs */
1224 amd8111e_free_skbs(lp->amd8111e_net_dev);
1225
1226 netif_carrier_off(lp->amd8111e_net_dev);
1227
1228 /* Delete ipg timer */
1229 if(lp->options & OPTION_DYN_IPG_ENABLE)
1230 del_timer_sync(&lp->ipg_data.ipg_timer);
1231
1232 spin_unlock_irq(&lp->lock);
1233 free_irq(dev->irq, dev);
1234 amd8111e_free_ring(lp);
1235
1236 /* Update the statistics before closing */
1237 amd8111e_get_stats(dev);
1238 lp->opened = 0;
1239 return 0;
1240 }
1241 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1242 */
amd8111e_open(struct net_device * dev)1243 static int amd8111e_open(struct net_device * dev )
1244 {
1245 struct amd8111e_priv *lp = netdev_priv(dev);
1246
1247 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1248 dev->name, dev))
1249 return -EAGAIN;
1250
1251 napi_enable(&lp->napi);
1252
1253 spin_lock_irq(&lp->lock);
1254
1255 amd8111e_init_hw_default(lp);
1256
1257 if(amd8111e_restart(dev)){
1258 spin_unlock_irq(&lp->lock);
1259 napi_disable(&lp->napi);
1260 if (dev->irq)
1261 free_irq(dev->irq, dev);
1262 return -ENOMEM;
1263 }
1264 /* Start ipg timer */
1265 if(lp->options & OPTION_DYN_IPG_ENABLE){
1266 add_timer(&lp->ipg_data.ipg_timer);
1267 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1268 }
1269
1270 lp->opened = 1;
1271
1272 spin_unlock_irq(&lp->lock);
1273
1274 netif_start_queue(dev);
1275
1276 return 0;
1277 }
1278 /*
1279 This function checks if there is any transmit descriptors available to queue more packet.
1280 */
amd8111e_tx_queue_avail(struct amd8111e_priv * lp)1281 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1282 {
1283 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1284 if (lp->tx_skbuff[tx_index])
1285 return -1;
1286 else
1287 return 0;
1288
1289 }
1290 /*
1291 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.
1292 */
1293
amd8111e_start_xmit(struct sk_buff * skb,struct net_device * dev)1294 static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
1295 struct net_device * dev)
1296 {
1297 struct amd8111e_priv *lp = netdev_priv(dev);
1298 int tx_index;
1299 unsigned long flags;
1300
1301 spin_lock_irqsave(&lp->lock, flags);
1302
1303 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1304
1305 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1306
1307 lp->tx_skbuff[tx_index] = skb;
1308 lp->tx_ring[tx_index].tx_flags = 0;
1309
1310 #if AMD8111E_VLAN_TAG_USED
1311 if (vlan_tx_tag_present(skb)) {
1312 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1313 cpu_to_le16(TCC_VLAN_INSERT);
1314 lp->tx_ring[tx_index].tag_ctrl_info =
1315 cpu_to_le16(vlan_tx_tag_get(skb));
1316
1317 }
1318 #endif
1319 lp->tx_dma_addr[tx_index] =
1320 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1321 lp->tx_ring[tx_index].buff_phy_addr =
1322 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1323
1324 /* Set FCS and LTINT bits */
1325 wmb();
1326 lp->tx_ring[tx_index].tx_flags |=
1327 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1328
1329 lp->tx_idx++;
1330
1331 /* Trigger an immediate send poll. */
1332 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1333 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1334
1335 if(amd8111e_tx_queue_avail(lp) < 0){
1336 netif_stop_queue(dev);
1337 }
1338 spin_unlock_irqrestore(&lp->lock, flags);
1339 return NETDEV_TX_OK;
1340 }
1341 /*
1342 This function returns all the memory mapped registers of the device.
1343 */
amd8111e_read_regs(struct amd8111e_priv * lp,u32 * buf)1344 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1345 {
1346 void __iomem *mmio = lp->mmio;
1347 /* Read only necessary registers */
1348 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1349 buf[1] = readl(mmio + XMT_RING_LEN0);
1350 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1351 buf[3] = readl(mmio + RCV_RING_LEN0);
1352 buf[4] = readl(mmio + CMD0);
1353 buf[5] = readl(mmio + CMD2);
1354 buf[6] = readl(mmio + CMD3);
1355 buf[7] = readl(mmio + CMD7);
1356 buf[8] = readl(mmio + INT0);
1357 buf[9] = readl(mmio + INTEN0);
1358 buf[10] = readl(mmio + LADRF);
1359 buf[11] = readl(mmio + LADRF+4);
1360 buf[12] = readl(mmio + STAT0);
1361 }
1362
1363
1364 /*
1365 This function sets promiscuos mode, all-multi mode or the multicast address
1366 list to the device.
1367 */
amd8111e_set_multicast_list(struct net_device * dev)1368 static void amd8111e_set_multicast_list(struct net_device *dev)
1369 {
1370 struct netdev_hw_addr *ha;
1371 struct amd8111e_priv *lp = netdev_priv(dev);
1372 u32 mc_filter[2] ;
1373 int bit_num;
1374
1375 if(dev->flags & IFF_PROMISC){
1376 writel( VAL2 | PROM, lp->mmio + CMD2);
1377 return;
1378 }
1379 else
1380 writel( PROM, lp->mmio + CMD2);
1381 if (dev->flags & IFF_ALLMULTI ||
1382 netdev_mc_count(dev) > MAX_FILTER_SIZE) {
1383 /* get all multicast packet */
1384 mc_filter[1] = mc_filter[0] = 0xffffffff;
1385 lp->options |= OPTION_MULTICAST_ENABLE;
1386 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1387 return;
1388 }
1389 if (netdev_mc_empty(dev)) {
1390 /* get only own packets */
1391 mc_filter[1] = mc_filter[0] = 0;
1392 lp->options &= ~OPTION_MULTICAST_ENABLE;
1393 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1394 /* disable promiscuous mode */
1395 writel(PROM, lp->mmio + CMD2);
1396 return;
1397 }
1398 /* load all the multicast addresses in the logic filter */
1399 lp->options |= OPTION_MULTICAST_ENABLE;
1400 mc_filter[1] = mc_filter[0] = 0;
1401 netdev_for_each_mc_addr(ha, dev) {
1402 bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
1403 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1404 }
1405 amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1406
1407 /* To eliminate PCI posting bug */
1408 readl(lp->mmio + CMD2);
1409
1410 }
1411
amd8111e_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)1412 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1413 {
1414 struct amd8111e_priv *lp = netdev_priv(dev);
1415 struct pci_dev *pci_dev = lp->pci_dev;
1416 strlcpy(info->driver, MODULE_NAME, sizeof(info->driver));
1417 strlcpy(info->version, MODULE_VERS, sizeof(info->version));
1418 snprintf(info->fw_version, sizeof(info->fw_version),
1419 "%u", chip_version);
1420 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
1421 }
1422
amd8111e_get_regs_len(struct net_device * dev)1423 static int amd8111e_get_regs_len(struct net_device *dev)
1424 {
1425 return AMD8111E_REG_DUMP_LEN;
1426 }
1427
amd8111e_get_regs(struct net_device * dev,struct ethtool_regs * regs,void * buf)1428 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1429 {
1430 struct amd8111e_priv *lp = netdev_priv(dev);
1431 regs->version = 0;
1432 amd8111e_read_regs(lp, buf);
1433 }
1434
amd8111e_get_settings(struct net_device * dev,struct ethtool_cmd * ecmd)1435 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1436 {
1437 struct amd8111e_priv *lp = netdev_priv(dev);
1438 spin_lock_irq(&lp->lock);
1439 mii_ethtool_gset(&lp->mii_if, ecmd);
1440 spin_unlock_irq(&lp->lock);
1441 return 0;
1442 }
1443
amd8111e_set_settings(struct net_device * dev,struct ethtool_cmd * ecmd)1444 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1445 {
1446 struct amd8111e_priv *lp = netdev_priv(dev);
1447 int res;
1448 spin_lock_irq(&lp->lock);
1449 res = mii_ethtool_sset(&lp->mii_if, ecmd);
1450 spin_unlock_irq(&lp->lock);
1451 return res;
1452 }
1453
amd8111e_nway_reset(struct net_device * dev)1454 static int amd8111e_nway_reset(struct net_device *dev)
1455 {
1456 struct amd8111e_priv *lp = netdev_priv(dev);
1457 return mii_nway_restart(&lp->mii_if);
1458 }
1459
amd8111e_get_link(struct net_device * dev)1460 static u32 amd8111e_get_link(struct net_device *dev)
1461 {
1462 struct amd8111e_priv *lp = netdev_priv(dev);
1463 return mii_link_ok(&lp->mii_if);
1464 }
1465
amd8111e_get_wol(struct net_device * dev,struct ethtool_wolinfo * wol_info)1466 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1467 {
1468 struct amd8111e_priv *lp = netdev_priv(dev);
1469 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1470 if (lp->options & OPTION_WOL_ENABLE)
1471 wol_info->wolopts = WAKE_MAGIC;
1472 }
1473
amd8111e_set_wol(struct net_device * dev,struct ethtool_wolinfo * wol_info)1474 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1475 {
1476 struct amd8111e_priv *lp = netdev_priv(dev);
1477 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1478 return -EINVAL;
1479 spin_lock_irq(&lp->lock);
1480 if (wol_info->wolopts & WAKE_MAGIC)
1481 lp->options |=
1482 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1483 else if(wol_info->wolopts & WAKE_PHY)
1484 lp->options |=
1485 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1486 else
1487 lp->options &= ~OPTION_WOL_ENABLE;
1488 spin_unlock_irq(&lp->lock);
1489 return 0;
1490 }
1491
1492 static const struct ethtool_ops ops = {
1493 .get_drvinfo = amd8111e_get_drvinfo,
1494 .get_regs_len = amd8111e_get_regs_len,
1495 .get_regs = amd8111e_get_regs,
1496 .get_settings = amd8111e_get_settings,
1497 .set_settings = amd8111e_set_settings,
1498 .nway_reset = amd8111e_nway_reset,
1499 .get_link = amd8111e_get_link,
1500 .get_wol = amd8111e_get_wol,
1501 .set_wol = amd8111e_set_wol,
1502 };
1503
1504 /*
1505 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.
1506 */
1507
amd8111e_ioctl(struct net_device * dev,struct ifreq * ifr,int cmd)1508 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1509 {
1510 struct mii_ioctl_data *data = if_mii(ifr);
1511 struct amd8111e_priv *lp = netdev_priv(dev);
1512 int err;
1513 u32 mii_regval;
1514
1515 switch(cmd) {
1516 case SIOCGMIIPHY:
1517 data->phy_id = lp->ext_phy_addr;
1518
1519 /* fallthru */
1520 case SIOCGMIIREG:
1521
1522 spin_lock_irq(&lp->lock);
1523 err = amd8111e_read_phy(lp, data->phy_id,
1524 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1525 spin_unlock_irq(&lp->lock);
1526
1527 data->val_out = mii_regval;
1528 return err;
1529
1530 case SIOCSMIIREG:
1531
1532 spin_lock_irq(&lp->lock);
1533 err = amd8111e_write_phy(lp, data->phy_id,
1534 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1535 spin_unlock_irq(&lp->lock);
1536
1537 return err;
1538
1539 default:
1540 /* do nothing */
1541 break;
1542 }
1543 return -EOPNOTSUPP;
1544 }
amd8111e_set_mac_address(struct net_device * dev,void * p)1545 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1546 {
1547 struct amd8111e_priv *lp = netdev_priv(dev);
1548 int i;
1549 struct sockaddr *addr = p;
1550
1551 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1552 spin_lock_irq(&lp->lock);
1553 /* Setting the MAC address to the device */
1554 for (i = 0; i < ETH_ALEN; i++)
1555 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1556
1557 spin_unlock_irq(&lp->lock);
1558
1559 return 0;
1560 }
1561
1562 /*
1563 This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers.
1564 */
amd8111e_change_mtu(struct net_device * dev,int new_mtu)1565 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1566 {
1567 struct amd8111e_priv *lp = netdev_priv(dev);
1568 int err;
1569
1570 if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1571 return -EINVAL;
1572
1573 if (!netif_running(dev)) {
1574 /* new_mtu will be used
1575 when device starts netxt time */
1576 dev->mtu = new_mtu;
1577 return 0;
1578 }
1579
1580 spin_lock_irq(&lp->lock);
1581
1582 /* stop the chip */
1583 writel(RUN, lp->mmio + CMD0);
1584
1585 dev->mtu = new_mtu;
1586
1587 err = amd8111e_restart(dev);
1588 spin_unlock_irq(&lp->lock);
1589 if(!err)
1590 netif_start_queue(dev);
1591 return err;
1592 }
1593
amd8111e_enable_magicpkt(struct amd8111e_priv * lp)1594 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1595 {
1596 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1597 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1598
1599 /* To eliminate PCI posting bug */
1600 readl(lp->mmio + CMD7);
1601 return 0;
1602 }
1603
amd8111e_enable_link_change(struct amd8111e_priv * lp)1604 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1605 {
1606
1607 /* Adapter is already stoped/suspended/interrupt-disabled */
1608 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1609
1610 /* To eliminate PCI posting bug */
1611 readl(lp->mmio + CMD7);
1612 return 0;
1613 }
1614
1615 /*
1616 * This function is called when a packet transmission fails to complete
1617 * within a reasonable period, on the assumption that an interrupt have
1618 * failed or the interface is locked up. This function will reinitialize
1619 * the hardware.
1620 */
amd8111e_tx_timeout(struct net_device * dev)1621 static void amd8111e_tx_timeout(struct net_device *dev)
1622 {
1623 struct amd8111e_priv* lp = netdev_priv(dev);
1624 int err;
1625
1626 printk(KERN_ERR "%s: transmit timed out, resetting\n",
1627 dev->name);
1628 spin_lock_irq(&lp->lock);
1629 err = amd8111e_restart(dev);
1630 spin_unlock_irq(&lp->lock);
1631 if(!err)
1632 netif_wake_queue(dev);
1633 }
amd8111e_suspend(struct pci_dev * pci_dev,pm_message_t state)1634 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1635 {
1636 struct net_device *dev = pci_get_drvdata(pci_dev);
1637 struct amd8111e_priv *lp = netdev_priv(dev);
1638
1639 if (!netif_running(dev))
1640 return 0;
1641
1642 /* disable the interrupt */
1643 spin_lock_irq(&lp->lock);
1644 amd8111e_disable_interrupt(lp);
1645 spin_unlock_irq(&lp->lock);
1646
1647 netif_device_detach(dev);
1648
1649 /* stop chip */
1650 spin_lock_irq(&lp->lock);
1651 if(lp->options & OPTION_DYN_IPG_ENABLE)
1652 del_timer_sync(&lp->ipg_data.ipg_timer);
1653 amd8111e_stop_chip(lp);
1654 spin_unlock_irq(&lp->lock);
1655
1656 if(lp->options & OPTION_WOL_ENABLE){
1657 /* enable wol */
1658 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1659 amd8111e_enable_magicpkt(lp);
1660 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1661 amd8111e_enable_link_change(lp);
1662
1663 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1664 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1665
1666 }
1667 else{
1668 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1669 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1670 }
1671
1672 pci_save_state(pci_dev);
1673 pci_set_power_state(pci_dev, PCI_D3hot);
1674
1675 return 0;
1676 }
amd8111e_resume(struct pci_dev * pci_dev)1677 static int amd8111e_resume(struct pci_dev *pci_dev)
1678 {
1679 struct net_device *dev = pci_get_drvdata(pci_dev);
1680 struct amd8111e_priv *lp = netdev_priv(dev);
1681
1682 if (!netif_running(dev))
1683 return 0;
1684
1685 pci_set_power_state(pci_dev, PCI_D0);
1686 pci_restore_state(pci_dev);
1687
1688 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1689 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1690
1691 netif_device_attach(dev);
1692
1693 spin_lock_irq(&lp->lock);
1694 amd8111e_restart(dev);
1695 /* Restart ipg timer */
1696 if(lp->options & OPTION_DYN_IPG_ENABLE)
1697 mod_timer(&lp->ipg_data.ipg_timer,
1698 jiffies + IPG_CONVERGE_JIFFIES);
1699 spin_unlock_irq(&lp->lock);
1700
1701 return 0;
1702 }
1703
1704
amd8111e_remove_one(struct pci_dev * pdev)1705 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1706 {
1707 struct net_device *dev = pci_get_drvdata(pdev);
1708 if (dev) {
1709 unregister_netdev(dev);
1710 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1711 free_netdev(dev);
1712 pci_release_regions(pdev);
1713 pci_disable_device(pdev);
1714 pci_set_drvdata(pdev, NULL);
1715 }
1716 }
amd8111e_config_ipg(struct net_device * dev)1717 static void amd8111e_config_ipg(struct net_device* dev)
1718 {
1719 struct amd8111e_priv *lp = netdev_priv(dev);
1720 struct ipg_info* ipg_data = &lp->ipg_data;
1721 void __iomem *mmio = lp->mmio;
1722 unsigned int prev_col_cnt = ipg_data->col_cnt;
1723 unsigned int total_col_cnt;
1724 unsigned int tmp_ipg;
1725
1726 if(lp->link_config.duplex == DUPLEX_FULL){
1727 ipg_data->ipg = DEFAULT_IPG;
1728 return;
1729 }
1730
1731 if(ipg_data->ipg_state == SSTATE){
1732
1733 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1734
1735 ipg_data->timer_tick = 0;
1736 ipg_data->ipg = MIN_IPG - IPG_STEP;
1737 ipg_data->current_ipg = MIN_IPG;
1738 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1739 ipg_data->ipg_state = CSTATE;
1740 }
1741 else
1742 ipg_data->timer_tick++;
1743 }
1744
1745 if(ipg_data->ipg_state == CSTATE){
1746
1747 /* Get the current collision count */
1748
1749 total_col_cnt = ipg_data->col_cnt =
1750 amd8111e_read_mib(mmio, xmt_collisions);
1751
1752 if ((total_col_cnt - prev_col_cnt) <
1753 (ipg_data->diff_col_cnt)){
1754
1755 ipg_data->diff_col_cnt =
1756 total_col_cnt - prev_col_cnt ;
1757
1758 ipg_data->ipg = ipg_data->current_ipg;
1759 }
1760
1761 ipg_data->current_ipg += IPG_STEP;
1762
1763 if (ipg_data->current_ipg <= MAX_IPG)
1764 tmp_ipg = ipg_data->current_ipg;
1765 else{
1766 tmp_ipg = ipg_data->ipg;
1767 ipg_data->ipg_state = SSTATE;
1768 }
1769 writew((u32)tmp_ipg, mmio + IPG);
1770 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1771 }
1772 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1773 return;
1774
1775 }
1776
amd8111e_probe_ext_phy(struct net_device * dev)1777 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1778 {
1779 struct amd8111e_priv *lp = netdev_priv(dev);
1780 int i;
1781
1782 for (i = 0x1e; i >= 0; i--) {
1783 u32 id1, id2;
1784
1785 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1786 continue;
1787 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1788 continue;
1789 lp->ext_phy_id = (id1 << 16) | id2;
1790 lp->ext_phy_addr = i;
1791 return;
1792 }
1793 lp->ext_phy_id = 0;
1794 lp->ext_phy_addr = 1;
1795 }
1796
1797 static const struct net_device_ops amd8111e_netdev_ops = {
1798 .ndo_open = amd8111e_open,
1799 .ndo_stop = amd8111e_close,
1800 .ndo_start_xmit = amd8111e_start_xmit,
1801 .ndo_tx_timeout = amd8111e_tx_timeout,
1802 .ndo_get_stats = amd8111e_get_stats,
1803 .ndo_set_rx_mode = amd8111e_set_multicast_list,
1804 .ndo_validate_addr = eth_validate_addr,
1805 .ndo_set_mac_address = amd8111e_set_mac_address,
1806 .ndo_do_ioctl = amd8111e_ioctl,
1807 .ndo_change_mtu = amd8111e_change_mtu,
1808 #ifdef CONFIG_NET_POLL_CONTROLLER
1809 .ndo_poll_controller = amd8111e_poll,
1810 #endif
1811 };
1812
amd8111e_probe_one(struct pci_dev * pdev,const struct pci_device_id * ent)1813 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1814 const struct pci_device_id *ent)
1815 {
1816 int err,i,pm_cap;
1817 unsigned long reg_addr,reg_len;
1818 struct amd8111e_priv* lp;
1819 struct net_device* dev;
1820
1821 err = pci_enable_device(pdev);
1822 if(err){
1823 printk(KERN_ERR "amd8111e: Cannot enable new PCI device, "
1824 "exiting.\n");
1825 return err;
1826 }
1827
1828 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1829 printk(KERN_ERR "amd8111e: Cannot find PCI base address, "
1830 "exiting.\n");
1831 err = -ENODEV;
1832 goto err_disable_pdev;
1833 }
1834
1835 err = pci_request_regions(pdev, MODULE_NAME);
1836 if(err){
1837 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1838 "exiting.\n");
1839 goto err_disable_pdev;
1840 }
1841
1842 pci_set_master(pdev);
1843
1844 /* Find power-management capability. */
1845 if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
1846 printk(KERN_ERR "amd8111e: No Power Management capability, "
1847 "exiting.\n");
1848 goto err_free_reg;
1849 }
1850
1851 /* Initialize DMA */
1852 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) < 0) {
1853 printk(KERN_ERR "amd8111e: DMA not supported,"
1854 "exiting.\n");
1855 goto err_free_reg;
1856 }
1857
1858 reg_addr = pci_resource_start(pdev, 0);
1859 reg_len = pci_resource_len(pdev, 0);
1860
1861 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1862 if (!dev) {
1863 err = -ENOMEM;
1864 goto err_free_reg;
1865 }
1866
1867 SET_NETDEV_DEV(dev, &pdev->dev);
1868
1869 #if AMD8111E_VLAN_TAG_USED
1870 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
1871 #endif
1872
1873 lp = netdev_priv(dev);
1874 lp->pci_dev = pdev;
1875 lp->amd8111e_net_dev = dev;
1876 lp->pm_cap = pm_cap;
1877
1878 spin_lock_init(&lp->lock);
1879
1880 lp->mmio = ioremap(reg_addr, reg_len);
1881 if (!lp->mmio) {
1882 printk(KERN_ERR "amd8111e: Cannot map device registers, "
1883 "exiting\n");
1884 err = -ENOMEM;
1885 goto err_free_dev;
1886 }
1887
1888 /* Initializing MAC address */
1889 for (i = 0; i < ETH_ALEN; i++)
1890 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1891
1892 /* Setting user defined parametrs */
1893 lp->ext_phy_option = speed_duplex[card_idx];
1894 if(coalesce[card_idx])
1895 lp->options |= OPTION_INTR_COAL_ENABLE;
1896 if(dynamic_ipg[card_idx++])
1897 lp->options |= OPTION_DYN_IPG_ENABLE;
1898
1899
1900 /* Initialize driver entry points */
1901 dev->netdev_ops = &amd8111e_netdev_ops;
1902 SET_ETHTOOL_OPS(dev, &ops);
1903 dev->irq =pdev->irq;
1904 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1905 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1906
1907 #if AMD8111E_VLAN_TAG_USED
1908 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1909 #endif
1910 /* Probe the external PHY */
1911 amd8111e_probe_ext_phy(dev);
1912
1913 /* setting mii default values */
1914 lp->mii_if.dev = dev;
1915 lp->mii_if.mdio_read = amd8111e_mdio_read;
1916 lp->mii_if.mdio_write = amd8111e_mdio_write;
1917 lp->mii_if.phy_id = lp->ext_phy_addr;
1918
1919 /* Set receive buffer length and set jumbo option*/
1920 amd8111e_set_rx_buff_len(dev);
1921
1922
1923 err = register_netdev(dev);
1924 if (err) {
1925 printk(KERN_ERR "amd8111e: Cannot register net device, "
1926 "exiting.\n");
1927 goto err_iounmap;
1928 }
1929
1930 pci_set_drvdata(pdev, dev);
1931
1932 /* Initialize software ipg timer */
1933 if(lp->options & OPTION_DYN_IPG_ENABLE){
1934 init_timer(&lp->ipg_data.ipg_timer);
1935 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
1936 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
1937 lp->ipg_data.ipg_timer.expires = jiffies +
1938 IPG_CONVERGE_JIFFIES;
1939 lp->ipg_data.ipg = DEFAULT_IPG;
1940 lp->ipg_data.ipg_state = CSTATE;
1941 }
1942
1943 /* display driver and device information */
1944
1945 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1946 printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n",
1947 dev->name,MODULE_VERS);
1948 printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1949 dev->name, chip_version, dev->dev_addr);
1950 if (lp->ext_phy_id)
1951 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
1952 dev->name, lp->ext_phy_id, lp->ext_phy_addr);
1953 else
1954 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
1955 dev->name);
1956 return 0;
1957 err_iounmap:
1958 iounmap(lp->mmio);
1959
1960 err_free_dev:
1961 free_netdev(dev);
1962
1963 err_free_reg:
1964 pci_release_regions(pdev);
1965
1966 err_disable_pdev:
1967 pci_disable_device(pdev);
1968 pci_set_drvdata(pdev, NULL);
1969 return err;
1970
1971 }
1972
1973 static struct pci_driver amd8111e_driver = {
1974 .name = MODULE_NAME,
1975 .id_table = amd8111e_pci_tbl,
1976 .probe = amd8111e_probe_one,
1977 .remove = __devexit_p(amd8111e_remove_one),
1978 .suspend = amd8111e_suspend,
1979 .resume = amd8111e_resume
1980 };
1981
amd8111e_init(void)1982 static int __init amd8111e_init(void)
1983 {
1984 return pci_register_driver(&amd8111e_driver);
1985 }
1986
amd8111e_cleanup(void)1987 static void __exit amd8111e_cleanup(void)
1988 {
1989 pci_unregister_driver(&amd8111e_driver);
1990 }
1991
1992 module_init(amd8111e_init);
1993 module_exit(amd8111e_cleanup);
1994