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[mirror_ubuntu-jammy-kernel.git] / drivers / net / ethernet / amd / amd8111e.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2
3 /* Advanced Micro Devices Inc. AMD8111E Linux Network Driver
4 * Copyright (C) 2004 Advanced Micro Devices
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 Module Name:
17
18 amd8111e.c
19
20 Abstract:
21
22 AMD8111 based 10/100 Ethernet Controller Driver.
23
24 Environment:
25
26 Kernel Mode
27
28 Revision History:
29 3.0.0
30 Initial Revision.
31 3.0.1
32 1. Dynamic interrupt coalescing.
33 2. Removed prev_stats.
34 3. MII support.
35 4. Dynamic IPG support
36 3.0.2 05/29/2003
37 1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
38 2. Bug fix: Fixed VLAN support failure.
39 3. Bug fix: Fixed receive interrupt coalescing bug.
40 4. Dynamic IPG support is disabled by default.
41 3.0.3 06/05/2003
42 1. Bug fix: Fixed failure to close the interface if SMP is enabled.
43 3.0.4 12/09/2003
44 1. Added set_mac_address routine for bonding driver support.
45 2. Tested the driver for bonding support
46 3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth
47 indicated to the h/w.
48 4. Modified amd8111e_rx() routine to receive all the received packets
49 in the first interrupt.
50 5. Bug fix: Corrected rx_errors reported in get_stats() function.
51 3.0.5 03/22/2004
52 1. Added NAPI support
53
54 */
55
56
57 #include <linux/module.h>
58 #include <linux/kernel.h>
59 #include <linux/types.h>
60 #include <linux/compiler.h>
61 #include <linux/delay.h>
62 #include <linux/interrupt.h>
63 #include <linux/ioport.h>
64 #include <linux/pci.h>
65 #include <linux/netdevice.h>
66 #include <linux/etherdevice.h>
67 #include <linux/skbuff.h>
68 #include <linux/ethtool.h>
69 #include <linux/mii.h>
70 #include <linux/if_vlan.h>
71 #include <linux/ctype.h>
72 #include <linux/crc32.h>
73 #include <linux/dma-mapping.h>
74
75 #include <asm/io.h>
76 #include <asm/byteorder.h>
77 #include <linux/uaccess.h>
78
79 #if IS_ENABLED(CONFIG_VLAN_8021Q)
80 #define AMD8111E_VLAN_TAG_USED 1
81 #else
82 #define AMD8111E_VLAN_TAG_USED 0
83 #endif
84
85 #include "amd8111e.h"
86 #define MODULE_NAME "amd8111e"
87 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
88 MODULE_DESCRIPTION("AMD8111 based 10/100 Ethernet Controller.");
89 MODULE_LICENSE("GPL");
90 module_param_array(speed_duplex, int, NULL, 0);
91 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");
92 module_param_array(coalesce, bool, NULL, 0);
93 MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
94 module_param_array(dynamic_ipg, bool, NULL, 0);
95 MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
96
97 /* This function will read the PHY registers. */
98 static int amd8111e_read_phy(struct amd8111e_priv *lp,
99 int phy_id, int reg, u32 *val)
100 {
101 void __iomem *mmio = lp->mmio;
102 unsigned int reg_val;
103 unsigned int repeat= REPEAT_CNT;
104
105 reg_val = readl(mmio + PHY_ACCESS);
106 while (reg_val & PHY_CMD_ACTIVE)
107 reg_val = readl( mmio + PHY_ACCESS );
108
109 writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
110 ((reg & 0x1f) << 16), mmio +PHY_ACCESS);
111 do{
112 reg_val = readl(mmio + PHY_ACCESS);
113 udelay(30); /* It takes 30 us to read/write data */
114 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
115 if(reg_val & PHY_RD_ERR)
116 goto err_phy_read;
117
118 *val = reg_val & 0xffff;
119 return 0;
120 err_phy_read:
121 *val = 0;
122 return -EINVAL;
123
124 }
125
126 /* This function will write into PHY registers. */
127 static int amd8111e_write_phy(struct amd8111e_priv *lp,
128 int phy_id, int reg, u32 val)
129 {
130 unsigned int repeat = REPEAT_CNT;
131 void __iomem *mmio = lp->mmio;
132 unsigned int reg_val;
133
134 reg_val = readl(mmio + PHY_ACCESS);
135 while (reg_val & PHY_CMD_ACTIVE)
136 reg_val = readl( mmio + PHY_ACCESS );
137
138 writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
139 ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
140
141 do{
142 reg_val = readl(mmio + PHY_ACCESS);
143 udelay(30); /* It takes 30 us to read/write the data */
144 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
145
146 if(reg_val & PHY_RD_ERR)
147 goto err_phy_write;
148
149 return 0;
150
151 err_phy_write:
152 return -EINVAL;
153
154 }
155
156 /* This is the mii register read function provided to the mii interface. */
157 static int amd8111e_mdio_read(struct net_device *dev, int phy_id, int reg_num)
158 {
159 struct amd8111e_priv *lp = netdev_priv(dev);
160 unsigned int reg_val;
161
162 amd8111e_read_phy(lp,phy_id,reg_num,&reg_val);
163 return reg_val;
164
165 }
166
167 /* This is the mii register write function provided to the mii interface. */
168 static void amd8111e_mdio_write(struct net_device *dev,
169 int phy_id, int reg_num, int val)
170 {
171 struct amd8111e_priv *lp = netdev_priv(dev);
172
173 amd8111e_write_phy(lp, phy_id, reg_num, val);
174 }
175
176 /* This function will set PHY speed. During initialization sets
177 * the original speed to 100 full
178 */
179 static void amd8111e_set_ext_phy(struct net_device *dev)
180 {
181 struct amd8111e_priv *lp = netdev_priv(dev);
182 u32 bmcr,advert,tmp;
183
184 /* Determine mii register values to set the speed */
185 advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
186 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
187 switch (lp->ext_phy_option){
188
189 default:
190 case SPEED_AUTONEG: /* advertise all values */
191 tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
192 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
193 break;
194 case SPEED10_HALF:
195 tmp |= ADVERTISE_10HALF;
196 break;
197 case SPEED10_FULL:
198 tmp |= ADVERTISE_10FULL;
199 break;
200 case SPEED100_HALF:
201 tmp |= ADVERTISE_100HALF;
202 break;
203 case SPEED100_FULL:
204 tmp |= ADVERTISE_100FULL;
205 break;
206 }
207
208 if(advert != tmp)
209 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
210 /* Restart auto negotiation */
211 bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
212 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
213 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
214
215 }
216
217 /* This function will unmap skb->data space and will free
218 * all transmit and receive skbuffs.
219 */
220 static int amd8111e_free_skbs(struct net_device *dev)
221 {
222 struct amd8111e_priv *lp = netdev_priv(dev);
223 struct sk_buff *rx_skbuff;
224 int i;
225
226 /* Freeing transmit skbs */
227 for(i = 0; i < NUM_TX_BUFFERS; i++){
228 if(lp->tx_skbuff[i]){
229 dma_unmap_single(&lp->pci_dev->dev,
230 lp->tx_dma_addr[i],
231 lp->tx_skbuff[i]->len, DMA_TO_DEVICE);
232 dev_kfree_skb (lp->tx_skbuff[i]);
233 lp->tx_skbuff[i] = NULL;
234 lp->tx_dma_addr[i] = 0;
235 }
236 }
237 /* Freeing previously allocated receive buffers */
238 for (i = 0; i < NUM_RX_BUFFERS; i++){
239 rx_skbuff = lp->rx_skbuff[i];
240 if(rx_skbuff != NULL){
241 dma_unmap_single(&lp->pci_dev->dev,
242 lp->rx_dma_addr[i],
243 lp->rx_buff_len - 2, DMA_FROM_DEVICE);
244 dev_kfree_skb(lp->rx_skbuff[i]);
245 lp->rx_skbuff[i] = NULL;
246 lp->rx_dma_addr[i] = 0;
247 }
248 }
249
250 return 0;
251 }
252
253 /* This will set the receive buffer length corresponding
254 * to the mtu size of networkinterface.
255 */
256 static inline void amd8111e_set_rx_buff_len(struct net_device *dev)
257 {
258 struct amd8111e_priv *lp = netdev_priv(dev);
259 unsigned int mtu = dev->mtu;
260
261 if (mtu > ETH_DATA_LEN){
262 /* MTU + ethernet header + FCS
263 * + optional VLAN tag + skb reserve space 2
264 */
265 lp->rx_buff_len = mtu + ETH_HLEN + 10;
266 lp->options |= OPTION_JUMBO_ENABLE;
267 } else{
268 lp->rx_buff_len = PKT_BUFF_SZ;
269 lp->options &= ~OPTION_JUMBO_ENABLE;
270 }
271 }
272
273 /* This function will free all the previously allocated buffers,
274 * determine new receive buffer length and will allocate new receive buffers.
275 * This function also allocates and initializes both the transmitter
276 * and receive hardware descriptors.
277 */
278 static int amd8111e_init_ring(struct net_device *dev)
279 {
280 struct amd8111e_priv *lp = netdev_priv(dev);
281 int i;
282
283 lp->rx_idx = lp->tx_idx = 0;
284 lp->tx_complete_idx = 0;
285 lp->tx_ring_idx = 0;
286
287
288 if(lp->opened)
289 /* Free previously allocated transmit and receive skbs */
290 amd8111e_free_skbs(dev);
291
292 else{
293 /* allocate the tx and rx descriptors */
294 lp->tx_ring = dma_alloc_coherent(&lp->pci_dev->dev,
295 sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
296 &lp->tx_ring_dma_addr, GFP_ATOMIC);
297 if (!lp->tx_ring)
298 goto err_no_mem;
299
300 lp->rx_ring = dma_alloc_coherent(&lp->pci_dev->dev,
301 sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
302 &lp->rx_ring_dma_addr, GFP_ATOMIC);
303 if (!lp->rx_ring)
304 goto err_free_tx_ring;
305 }
306
307 /* Set new receive buff size */
308 amd8111e_set_rx_buff_len(dev);
309
310 /* Allocating receive skbs */
311 for (i = 0; i < NUM_RX_BUFFERS; i++) {
312
313 lp->rx_skbuff[i] = netdev_alloc_skb(dev, lp->rx_buff_len);
314 if (!lp->rx_skbuff[i]) {
315 /* Release previos allocated skbs */
316 for(--i; i >= 0 ;i--)
317 dev_kfree_skb(lp->rx_skbuff[i]);
318 goto err_free_rx_ring;
319 }
320 skb_reserve(lp->rx_skbuff[i],2);
321 }
322 /* Initilaizing receive descriptors */
323 for (i = 0; i < NUM_RX_BUFFERS; i++) {
324 lp->rx_dma_addr[i] = dma_map_single(&lp->pci_dev->dev,
325 lp->rx_skbuff[i]->data,
326 lp->rx_buff_len - 2,
327 DMA_FROM_DEVICE);
328
329 lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
330 lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
331 wmb();
332 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
333 }
334
335 /* Initializing transmit descriptors */
336 for (i = 0; i < NUM_TX_RING_DR; i++) {
337 lp->tx_ring[i].buff_phy_addr = 0;
338 lp->tx_ring[i].tx_flags = 0;
339 lp->tx_ring[i].buff_count = 0;
340 }
341
342 return 0;
343
344 err_free_rx_ring:
345
346 dma_free_coherent(&lp->pci_dev->dev,
347 sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
348 lp->rx_ring, lp->rx_ring_dma_addr);
349
350 err_free_tx_ring:
351
352 dma_free_coherent(&lp->pci_dev->dev,
353 sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
354 lp->tx_ring, lp->tx_ring_dma_addr);
355
356 err_no_mem:
357 return -ENOMEM;
358 }
359
360 /* This function will set the interrupt coalescing according
361 * to the input arguments
362 */
363 static int amd8111e_set_coalesce(struct net_device *dev, enum coal_mode cmod)
364 {
365 unsigned int timeout;
366 unsigned int event_count;
367
368 struct amd8111e_priv *lp = netdev_priv(dev);
369 void __iomem *mmio = lp->mmio;
370 struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
371
372
373 switch(cmod)
374 {
375 case RX_INTR_COAL :
376 timeout = coal_conf->rx_timeout;
377 event_count = coal_conf->rx_event_count;
378 if( timeout > MAX_TIMEOUT ||
379 event_count > MAX_EVENT_COUNT )
380 return -EINVAL;
381
382 timeout = timeout * DELAY_TIMER_CONV;
383 writel(VAL0|STINTEN, mmio+INTEN0);
384 writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout,
385 mmio+DLY_INT_A);
386 break;
387
388 case TX_INTR_COAL :
389 timeout = coal_conf->tx_timeout;
390 event_count = coal_conf->tx_event_count;
391 if( timeout > MAX_TIMEOUT ||
392 event_count > MAX_EVENT_COUNT )
393 return -EINVAL;
394
395
396 timeout = timeout * DELAY_TIMER_CONV;
397 writel(VAL0|STINTEN,mmio+INTEN0);
398 writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout,
399 mmio+DLY_INT_B);
400 break;
401
402 case DISABLE_COAL:
403 writel(0,mmio+STVAL);
404 writel(STINTEN, mmio+INTEN0);
405 writel(0, mmio +DLY_INT_B);
406 writel(0, mmio+DLY_INT_A);
407 break;
408 case ENABLE_COAL:
409 /* Start the timer */
410 writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /* 0.5 sec */
411 writel(VAL0|STINTEN, mmio+INTEN0);
412 break;
413 default:
414 break;
415
416 }
417 return 0;
418
419 }
420
421 /* This function initializes the device registers and starts the device. */
422 static int amd8111e_restart(struct net_device *dev)
423 {
424 struct amd8111e_priv *lp = netdev_priv(dev);
425 void __iomem *mmio = lp->mmio;
426 int i,reg_val;
427
428 /* stop the chip */
429 writel(RUN, mmio + CMD0);
430
431 if(amd8111e_init_ring(dev))
432 return -ENOMEM;
433
434 /* enable the port manager and set auto negotiation always */
435 writel((u32) VAL1|EN_PMGR, mmio + CMD3 );
436 writel((u32)XPHYANE|XPHYRST , mmio + CTRL2);
437
438 amd8111e_set_ext_phy(dev);
439
440 /* set control registers */
441 reg_val = readl(mmio + CTRL1);
442 reg_val &= ~XMTSP_MASK;
443 writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 );
444
445 /* enable interrupt */
446 writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
447 APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
448 SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
449
450 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
451
452 /* initialize tx and rx ring base addresses */
453 writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0);
454 writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0);
455
456 writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
457 writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
458
459 /* set default IPG to 96 */
460 writew((u32)DEFAULT_IPG,mmio+IPG);
461 writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
462
463 if(lp->options & OPTION_JUMBO_ENABLE){
464 writel((u32)VAL2|JUMBO, mmio + CMD3);
465 /* Reset REX_UFLO */
466 writel( REX_UFLO, mmio + CMD2);
467 /* Should not set REX_UFLO for jumbo frames */
468 writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2);
469 }else{
470 writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2);
471 writel((u32)JUMBO, mmio + CMD3);
472 }
473
474 #if AMD8111E_VLAN_TAG_USED
475 writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3);
476 #endif
477 writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 );
478
479 /* Setting the MAC address to the device */
480 for (i = 0; i < ETH_ALEN; i++)
481 writeb( dev->dev_addr[i], mmio + PADR + i );
482
483 /* Enable interrupt coalesce */
484 if(lp->options & OPTION_INTR_COAL_ENABLE){
485 netdev_info(dev, "Interrupt Coalescing Enabled.\n");
486 amd8111e_set_coalesce(dev,ENABLE_COAL);
487 }
488
489 /* set RUN bit to start the chip */
490 writel(VAL2 | RDMD0, mmio + CMD0);
491 writel(VAL0 | INTREN | RUN, mmio + CMD0);
492
493 /* To avoid PCI posting bug */
494 readl(mmio+CMD0);
495 return 0;
496 }
497
498 /* This function clears necessary the device registers. */
499 static void amd8111e_init_hw_default(struct amd8111e_priv *lp)
500 {
501 unsigned int reg_val;
502 unsigned int logic_filter[2] ={0,};
503 void __iomem *mmio = lp->mmio;
504
505
506 /* stop the chip */
507 writel(RUN, mmio + CMD0);
508
509 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
510 writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
511
512 /* Clear RCV_RING_BASE_ADDR */
513 writel(0, mmio + RCV_RING_BASE_ADDR0);
514
515 /* Clear XMT_RING_BASE_ADDR */
516 writel(0, mmio + XMT_RING_BASE_ADDR0);
517 writel(0, mmio + XMT_RING_BASE_ADDR1);
518 writel(0, mmio + XMT_RING_BASE_ADDR2);
519 writel(0, mmio + XMT_RING_BASE_ADDR3);
520
521 /* Clear CMD0 */
522 writel(CMD0_CLEAR,mmio + CMD0);
523
524 /* Clear CMD2 */
525 writel(CMD2_CLEAR, mmio +CMD2);
526
527 /* Clear CMD7 */
528 writel(CMD7_CLEAR , mmio + CMD7);
529
530 /* Clear DLY_INT_A and DLY_INT_B */
531 writel(0x0, mmio + DLY_INT_A);
532 writel(0x0, mmio + DLY_INT_B);
533
534 /* Clear FLOW_CONTROL */
535 writel(0x0, mmio + FLOW_CONTROL);
536
537 /* Clear INT0 write 1 to clear register */
538 reg_val = readl(mmio + INT0);
539 writel(reg_val, mmio + INT0);
540
541 /* Clear STVAL */
542 writel(0x0, mmio + STVAL);
543
544 /* Clear INTEN0 */
545 writel( INTEN0_CLEAR, mmio + INTEN0);
546
547 /* Clear LADRF */
548 writel(0x0 , mmio + LADRF);
549
550 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
551 writel( 0x80010,mmio + SRAM_SIZE);
552
553 /* Clear RCV_RING0_LEN */
554 writel(0x0, mmio + RCV_RING_LEN0);
555
556 /* Clear XMT_RING0/1/2/3_LEN */
557 writel(0x0, mmio + XMT_RING_LEN0);
558 writel(0x0, mmio + XMT_RING_LEN1);
559 writel(0x0, mmio + XMT_RING_LEN2);
560 writel(0x0, mmio + XMT_RING_LEN3);
561
562 /* Clear XMT_RING_LIMIT */
563 writel(0x0, mmio + XMT_RING_LIMIT);
564
565 /* Clear MIB */
566 writew(MIB_CLEAR, mmio + MIB_ADDR);
567
568 /* Clear LARF */
569 amd8111e_writeq(*(u64 *)logic_filter, mmio + LADRF);
570
571 /* SRAM_SIZE register */
572 reg_val = readl(mmio + SRAM_SIZE);
573
574 if(lp->options & OPTION_JUMBO_ENABLE)
575 writel( VAL2|JUMBO, mmio + CMD3);
576 #if AMD8111E_VLAN_TAG_USED
577 writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 );
578 #endif
579 /* Set default value to CTRL1 Register */
580 writel(CTRL1_DEFAULT, mmio + CTRL1);
581
582 /* To avoid PCI posting bug */
583 readl(mmio + CMD2);
584
585 }
586
587 /* This function disables the interrupt and clears all the pending
588 * interrupts in INT0
589 */
590 static void amd8111e_disable_interrupt(struct amd8111e_priv *lp)
591 {
592 u32 intr0;
593
594 /* Disable interrupt */
595 writel(INTREN, lp->mmio + CMD0);
596
597 /* Clear INT0 */
598 intr0 = readl(lp->mmio + INT0);
599 writel(intr0, lp->mmio + INT0);
600
601 /* To avoid PCI posting bug */
602 readl(lp->mmio + INT0);
603
604 }
605
606 /* This function stops the chip. */
607 static void amd8111e_stop_chip(struct amd8111e_priv *lp)
608 {
609 writel(RUN, lp->mmio + CMD0);
610
611 /* To avoid PCI posting bug */
612 readl(lp->mmio + CMD0);
613 }
614
615 /* This function frees the transmiter and receiver descriptor rings. */
616 static void amd8111e_free_ring(struct amd8111e_priv *lp)
617 {
618 /* Free transmit and receive descriptor rings */
619 if(lp->rx_ring){
620 dma_free_coherent(&lp->pci_dev->dev,
621 sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
622 lp->rx_ring, lp->rx_ring_dma_addr);
623 lp->rx_ring = NULL;
624 }
625
626 if(lp->tx_ring){
627 dma_free_coherent(&lp->pci_dev->dev,
628 sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
629 lp->tx_ring, lp->tx_ring_dma_addr);
630
631 lp->tx_ring = NULL;
632 }
633
634 }
635
636 /* This function will free all the transmit skbs that are actually
637 * transmitted by the device. It will check the ownership of the
638 * skb before freeing the skb.
639 */
640 static int amd8111e_tx(struct net_device *dev)
641 {
642 struct amd8111e_priv *lp = netdev_priv(dev);
643 int tx_index;
644 int status;
645 /* Complete all the transmit packet */
646 while (lp->tx_complete_idx != lp->tx_idx){
647 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
648 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
649
650 if(status & OWN_BIT)
651 break; /* It still hasn't been Txed */
652
653 lp->tx_ring[tx_index].buff_phy_addr = 0;
654
655 /* We must free the original skb */
656 if (lp->tx_skbuff[tx_index]) {
657 dma_unmap_single(&lp->pci_dev->dev,
658 lp->tx_dma_addr[tx_index],
659 lp->tx_skbuff[tx_index]->len,
660 DMA_TO_DEVICE);
661 dev_consume_skb_irq(lp->tx_skbuff[tx_index]);
662 lp->tx_skbuff[tx_index] = NULL;
663 lp->tx_dma_addr[tx_index] = 0;
664 }
665 lp->tx_complete_idx++;
666 /*COAL update tx coalescing parameters */
667 lp->coal_conf.tx_packets++;
668 lp->coal_conf.tx_bytes +=
669 le16_to_cpu(lp->tx_ring[tx_index].buff_count);
670
671 if (netif_queue_stopped(dev) &&
672 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
673 /* The ring is no longer full, clear tbusy. */
674 /* lp->tx_full = 0; */
675 netif_wake_queue (dev);
676 }
677 }
678 return 0;
679 }
680
681 /* This function handles the driver receive operation in polling mode */
682 static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
683 {
684 struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
685 struct net_device *dev = lp->amd8111e_net_dev;
686 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
687 void __iomem *mmio = lp->mmio;
688 struct sk_buff *skb,*new_skb;
689 int min_pkt_len, status;
690 int num_rx_pkt = 0;
691 short pkt_len;
692 #if AMD8111E_VLAN_TAG_USED
693 short vtag;
694 #endif
695
696 while (num_rx_pkt < budget) {
697 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
698 if (status & OWN_BIT)
699 break;
700
701 /* There is a tricky error noted by John Murphy,
702 * <murf@perftech.com> to Russ Nelson: Even with
703 * full-sized * buffers it's possible for a
704 * jabber packet to use two buffers, with only
705 * the last correctly noting the error.
706 */
707 if (status & ERR_BIT) {
708 /* resetting flags */
709 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
710 goto err_next_pkt;
711 }
712 /* check for STP and ENP */
713 if (!((status & STP_BIT) && (status & ENP_BIT))){
714 /* resetting flags */
715 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
716 goto err_next_pkt;
717 }
718 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
719
720 #if AMD8111E_VLAN_TAG_USED
721 vtag = status & TT_MASK;
722 /* MAC will strip vlan tag */
723 if (vtag != 0)
724 min_pkt_len = MIN_PKT_LEN - 4;
725 else
726 #endif
727 min_pkt_len = MIN_PKT_LEN;
728
729 if (pkt_len < min_pkt_len) {
730 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
731 lp->drv_rx_errors++;
732 goto err_next_pkt;
733 }
734 new_skb = netdev_alloc_skb(dev, lp->rx_buff_len);
735 if (!new_skb) {
736 /* if allocation fail,
737 * ignore that pkt and go to next one
738 */
739 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
740 lp->drv_rx_errors++;
741 goto err_next_pkt;
742 }
743
744 skb_reserve(new_skb, 2);
745 skb = lp->rx_skbuff[rx_index];
746 dma_unmap_single(&lp->pci_dev->dev, lp->rx_dma_addr[rx_index],
747 lp->rx_buff_len - 2, DMA_FROM_DEVICE);
748 skb_put(skb, pkt_len);
749 lp->rx_skbuff[rx_index] = new_skb;
750 lp->rx_dma_addr[rx_index] = dma_map_single(&lp->pci_dev->dev,
751 new_skb->data,
752 lp->rx_buff_len - 2,
753 DMA_FROM_DEVICE);
754
755 skb->protocol = eth_type_trans(skb, dev);
756
757 #if AMD8111E_VLAN_TAG_USED
758 if (vtag == TT_VLAN_TAGGED){
759 u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
760 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
761 }
762 #endif
763 napi_gro_receive(napi, skb);
764 /* COAL update rx coalescing parameters */
765 lp->coal_conf.rx_packets++;
766 lp->coal_conf.rx_bytes += pkt_len;
767 num_rx_pkt++;
768
769 err_next_pkt:
770 lp->rx_ring[rx_index].buff_phy_addr
771 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
772 lp->rx_ring[rx_index].buff_count =
773 cpu_to_le16(lp->rx_buff_len-2);
774 wmb();
775 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
776 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
777 }
778
779 if (num_rx_pkt < budget && napi_complete_done(napi, num_rx_pkt)) {
780 unsigned long flags;
781
782 /* Receive descriptor is empty now */
783 spin_lock_irqsave(&lp->lock, flags);
784 writel(VAL0|RINTEN0, mmio + INTEN0);
785 writel(VAL2 | RDMD0, mmio + CMD0);
786 spin_unlock_irqrestore(&lp->lock, flags);
787 }
788
789 return num_rx_pkt;
790 }
791
792 /* This function will indicate the link status to the kernel. */
793 static int amd8111e_link_change(struct net_device *dev)
794 {
795 struct amd8111e_priv *lp = netdev_priv(dev);
796 int status0,speed;
797
798 /* read the link change */
799 status0 = readl(lp->mmio + STAT0);
800
801 if(status0 & LINK_STATS){
802 if(status0 & AUTONEG_COMPLETE)
803 lp->link_config.autoneg = AUTONEG_ENABLE;
804 else
805 lp->link_config.autoneg = AUTONEG_DISABLE;
806
807 if(status0 & FULL_DPLX)
808 lp->link_config.duplex = DUPLEX_FULL;
809 else
810 lp->link_config.duplex = DUPLEX_HALF;
811 speed = (status0 & SPEED_MASK) >> 7;
812 if(speed == PHY_SPEED_10)
813 lp->link_config.speed = SPEED_10;
814 else if(speed == PHY_SPEED_100)
815 lp->link_config.speed = SPEED_100;
816
817 netdev_info(dev, "Link is Up. Speed is %s Mbps %s Duplex\n",
818 (lp->link_config.speed == SPEED_100) ?
819 "100" : "10",
820 (lp->link_config.duplex == DUPLEX_FULL) ?
821 "Full" : "Half");
822
823 netif_carrier_on(dev);
824 }
825 else{
826 lp->link_config.speed = SPEED_INVALID;
827 lp->link_config.duplex = DUPLEX_INVALID;
828 lp->link_config.autoneg = AUTONEG_INVALID;
829 netdev_info(dev, "Link is Down.\n");
830 netif_carrier_off(dev);
831 }
832
833 return 0;
834 }
835
836 /* This function reads the mib counters. */
837 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
838 {
839 unsigned int status;
840 unsigned int data;
841 unsigned int repeat = REPEAT_CNT;
842
843 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
844 do {
845 status = readw(mmio + MIB_ADDR);
846 udelay(2); /* controller takes MAX 2 us to get mib data */
847 }
848 while (--repeat && (status & MIB_CMD_ACTIVE));
849
850 data = readl(mmio + MIB_DATA);
851 return data;
852 }
853
854 /* This function reads the mib registers and returns the hardware statistics.
855 * It updates previous internal driver statistics with new values.
856 */
857 static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
858 {
859 struct amd8111e_priv *lp = netdev_priv(dev);
860 void __iomem *mmio = lp->mmio;
861 unsigned long flags;
862 struct net_device_stats *new_stats = &dev->stats;
863
864 if (!lp->opened)
865 return new_stats;
866 spin_lock_irqsave (&lp->lock, flags);
867
868 /* stats.rx_packets */
869 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
870 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
871 amd8111e_read_mib(mmio, rcv_unicast_pkts);
872
873 /* stats.tx_packets */
874 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
875
876 /*stats.rx_bytes */
877 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
878
879 /* stats.tx_bytes */
880 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
881
882 /* stats.rx_errors */
883 /* hw errors + errors driver reported */
884 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
885 amd8111e_read_mib(mmio, rcv_fragments)+
886 amd8111e_read_mib(mmio, rcv_jabbers)+
887 amd8111e_read_mib(mmio, rcv_alignment_errors)+
888 amd8111e_read_mib(mmio, rcv_fcs_errors)+
889 amd8111e_read_mib(mmio, rcv_miss_pkts)+
890 lp->drv_rx_errors;
891
892 /* stats.tx_errors */
893 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
894
895 /* stats.rx_dropped*/
896 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
897
898 /* stats.tx_dropped*/
899 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
900
901 /* stats.multicast*/
902 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
903
904 /* stats.collisions*/
905 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
906
907 /* stats.rx_length_errors*/
908 new_stats->rx_length_errors =
909 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
910 amd8111e_read_mib(mmio, rcv_oversize_pkts);
911
912 /* stats.rx_over_errors*/
913 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
914
915 /* stats.rx_crc_errors*/
916 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
917
918 /* stats.rx_frame_errors*/
919 new_stats->rx_frame_errors =
920 amd8111e_read_mib(mmio, rcv_alignment_errors);
921
922 /* stats.rx_fifo_errors */
923 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
924
925 /* stats.rx_missed_errors */
926 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
927
928 /* stats.tx_aborted_errors*/
929 new_stats->tx_aborted_errors =
930 amd8111e_read_mib(mmio, xmt_excessive_collision);
931
932 /* stats.tx_carrier_errors*/
933 new_stats->tx_carrier_errors =
934 amd8111e_read_mib(mmio, xmt_loss_carrier);
935
936 /* stats.tx_fifo_errors*/
937 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
938
939 /* stats.tx_window_errors*/
940 new_stats->tx_window_errors =
941 amd8111e_read_mib(mmio, xmt_late_collision);
942
943 /* Reset the mibs for collecting new statistics */
944 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
945
946 spin_unlock_irqrestore (&lp->lock, flags);
947
948 return new_stats;
949 }
950
951 /* This function recalculate the interrupt coalescing mode on every interrupt
952 * according to the datarate and the packet rate.
953 */
954 static int amd8111e_calc_coalesce(struct net_device *dev)
955 {
956 struct amd8111e_priv *lp = netdev_priv(dev);
957 struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
958 int tx_pkt_rate;
959 int rx_pkt_rate;
960 int tx_data_rate;
961 int rx_data_rate;
962 int rx_pkt_size;
963 int tx_pkt_size;
964
965 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
966 coal_conf->tx_prev_packets = coal_conf->tx_packets;
967
968 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
969 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
970
971 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
972 coal_conf->rx_prev_packets = coal_conf->rx_packets;
973
974 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
975 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
976
977 if(rx_pkt_rate < 800){
978 if(coal_conf->rx_coal_type != NO_COALESCE){
979
980 coal_conf->rx_timeout = 0x0;
981 coal_conf->rx_event_count = 0;
982 amd8111e_set_coalesce(dev,RX_INTR_COAL);
983 coal_conf->rx_coal_type = NO_COALESCE;
984 }
985 }
986 else{
987
988 rx_pkt_size = rx_data_rate/rx_pkt_rate;
989 if (rx_pkt_size < 128){
990 if(coal_conf->rx_coal_type != NO_COALESCE){
991
992 coal_conf->rx_timeout = 0;
993 coal_conf->rx_event_count = 0;
994 amd8111e_set_coalesce(dev,RX_INTR_COAL);
995 coal_conf->rx_coal_type = NO_COALESCE;
996 }
997
998 }
999 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1000
1001 if(coal_conf->rx_coal_type != LOW_COALESCE){
1002 coal_conf->rx_timeout = 1;
1003 coal_conf->rx_event_count = 4;
1004 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1005 coal_conf->rx_coal_type = LOW_COALESCE;
1006 }
1007 }
1008 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1009
1010 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1011 coal_conf->rx_timeout = 1;
1012 coal_conf->rx_event_count = 4;
1013 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1014 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1015 }
1016
1017 }
1018 else if(rx_pkt_size >= 1024){
1019 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1020 coal_conf->rx_timeout = 2;
1021 coal_conf->rx_event_count = 3;
1022 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1023 coal_conf->rx_coal_type = HIGH_COALESCE;
1024 }
1025 }
1026 }
1027 /* NOW FOR TX INTR COALESC */
1028 if(tx_pkt_rate < 800){
1029 if(coal_conf->tx_coal_type != NO_COALESCE){
1030
1031 coal_conf->tx_timeout = 0x0;
1032 coal_conf->tx_event_count = 0;
1033 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1034 coal_conf->tx_coal_type = NO_COALESCE;
1035 }
1036 }
1037 else{
1038
1039 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1040 if (tx_pkt_size < 128){
1041
1042 if(coal_conf->tx_coal_type != NO_COALESCE){
1043
1044 coal_conf->tx_timeout = 0;
1045 coal_conf->tx_event_count = 0;
1046 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1047 coal_conf->tx_coal_type = NO_COALESCE;
1048 }
1049
1050 }
1051 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1052
1053 if(coal_conf->tx_coal_type != LOW_COALESCE){
1054 coal_conf->tx_timeout = 1;
1055 coal_conf->tx_event_count = 2;
1056 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1057 coal_conf->tx_coal_type = LOW_COALESCE;
1058
1059 }
1060 }
1061 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1062
1063 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1064 coal_conf->tx_timeout = 2;
1065 coal_conf->tx_event_count = 5;
1066 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1067 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1068 }
1069 } else if (tx_pkt_size >= 1024) {
1070 if (coal_conf->tx_coal_type != HIGH_COALESCE) {
1071 coal_conf->tx_timeout = 4;
1072 coal_conf->tx_event_count = 8;
1073 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1074 coal_conf->tx_coal_type = HIGH_COALESCE;
1075 }
1076 }
1077 }
1078 return 0;
1079
1080 }
1081
1082 /* This is device interrupt function. It handles transmit,
1083 * receive,link change and hardware timer interrupts.
1084 */
1085 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1086 {
1087
1088 struct net_device *dev = (struct net_device *)dev_id;
1089 struct amd8111e_priv *lp = netdev_priv(dev);
1090 void __iomem *mmio = lp->mmio;
1091 unsigned int intr0, intren0;
1092 unsigned int handled = 1;
1093
1094 if(unlikely(dev == NULL))
1095 return IRQ_NONE;
1096
1097 spin_lock(&lp->lock);
1098
1099 /* disabling interrupt */
1100 writel(INTREN, mmio + CMD0);
1101
1102 /* Read interrupt status */
1103 intr0 = readl(mmio + INT0);
1104 intren0 = readl(mmio + INTEN0);
1105
1106 /* Process all the INT event until INTR bit is clear. */
1107
1108 if (!(intr0 & INTR)){
1109 handled = 0;
1110 goto err_no_interrupt;
1111 }
1112
1113 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1114 writel(intr0, mmio + INT0);
1115
1116 /* Check if Receive Interrupt has occurred. */
1117 if (intr0 & RINT0) {
1118 if (napi_schedule_prep(&lp->napi)) {
1119 /* Disable receive interupts */
1120 writel(RINTEN0, mmio + INTEN0);
1121 /* Schedule a polling routine */
1122 __napi_schedule(&lp->napi);
1123 } else if (intren0 & RINTEN0) {
1124 netdev_dbg(dev, "************Driver bug! interrupt while in poll\n");
1125 /* Fix by disable receive interrupts */
1126 writel(RINTEN0, mmio + INTEN0);
1127 }
1128 }
1129
1130 /* Check if Transmit Interrupt has occurred. */
1131 if (intr0 & TINT0)
1132 amd8111e_tx(dev);
1133
1134 /* Check if Link Change Interrupt has occurred. */
1135 if (intr0 & LCINT)
1136 amd8111e_link_change(dev);
1137
1138 /* Check if Hardware Timer Interrupt has occurred. */
1139 if (intr0 & STINT)
1140 amd8111e_calc_coalesce(dev);
1141
1142 err_no_interrupt:
1143 writel( VAL0 | INTREN,mmio + CMD0);
1144
1145 spin_unlock(&lp->lock);
1146
1147 return IRQ_RETVAL(handled);
1148 }
1149
1150 #ifdef CONFIG_NET_POLL_CONTROLLER
1151 static void amd8111e_poll(struct net_device *dev)
1152 {
1153 unsigned long flags;
1154 local_irq_save(flags);
1155 amd8111e_interrupt(0, dev);
1156 local_irq_restore(flags);
1157 }
1158 #endif
1159
1160
1161 /* This function closes the network interface and updates
1162 * the statistics so that most recent statistics will be
1163 * available after the interface is down.
1164 */
1165 static int amd8111e_close(struct net_device *dev)
1166 {
1167 struct amd8111e_priv *lp = netdev_priv(dev);
1168 netif_stop_queue(dev);
1169
1170 napi_disable(&lp->napi);
1171
1172 spin_lock_irq(&lp->lock);
1173
1174 amd8111e_disable_interrupt(lp);
1175 amd8111e_stop_chip(lp);
1176
1177 /* Free transmit and receive skbs */
1178 amd8111e_free_skbs(lp->amd8111e_net_dev);
1179
1180 netif_carrier_off(lp->amd8111e_net_dev);
1181
1182 /* Delete ipg timer */
1183 if(lp->options & OPTION_DYN_IPG_ENABLE)
1184 del_timer_sync(&lp->ipg_data.ipg_timer);
1185
1186 spin_unlock_irq(&lp->lock);
1187 free_irq(dev->irq, dev);
1188 amd8111e_free_ring(lp);
1189
1190 /* Update the statistics before closing */
1191 amd8111e_get_stats(dev);
1192 lp->opened = 0;
1193 return 0;
1194 }
1195
1196 /* This function opens new interface.It requests irq for the device,
1197 * initializes the device,buffers and descriptors, and starts the device.
1198 */
1199 static int amd8111e_open(struct net_device *dev)
1200 {
1201 struct amd8111e_priv *lp = netdev_priv(dev);
1202
1203 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1204 dev->name, dev))
1205 return -EAGAIN;
1206
1207 napi_enable(&lp->napi);
1208
1209 spin_lock_irq(&lp->lock);
1210
1211 amd8111e_init_hw_default(lp);
1212
1213 if(amd8111e_restart(dev)){
1214 spin_unlock_irq(&lp->lock);
1215 napi_disable(&lp->napi);
1216 if (dev->irq)
1217 free_irq(dev->irq, dev);
1218 return -ENOMEM;
1219 }
1220 /* Start ipg timer */
1221 if(lp->options & OPTION_DYN_IPG_ENABLE){
1222 add_timer(&lp->ipg_data.ipg_timer);
1223 netdev_info(dev, "Dynamic IPG Enabled\n");
1224 }
1225
1226 lp->opened = 1;
1227
1228 spin_unlock_irq(&lp->lock);
1229
1230 netif_start_queue(dev);
1231
1232 return 0;
1233 }
1234
1235 /* This function checks if there is any transmit descriptors
1236 * available to queue more packet.
1237 */
1238 static int amd8111e_tx_queue_avail(struct amd8111e_priv *lp)
1239 {
1240 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1241 if (lp->tx_skbuff[tx_index])
1242 return -1;
1243 else
1244 return 0;
1245
1246 }
1247
1248 /* This function will queue the transmit packets to the
1249 * descriptors and will trigger the send operation. It also
1250 * initializes the transmit descriptors with buffer physical address,
1251 * byte count, ownership to hardware etc.
1252 */
1253 static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
1254 struct net_device *dev)
1255 {
1256 struct amd8111e_priv *lp = netdev_priv(dev);
1257 int tx_index;
1258 unsigned long flags;
1259
1260 spin_lock_irqsave(&lp->lock, flags);
1261
1262 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1263
1264 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1265
1266 lp->tx_skbuff[tx_index] = skb;
1267 lp->tx_ring[tx_index].tx_flags = 0;
1268
1269 #if AMD8111E_VLAN_TAG_USED
1270 if (skb_vlan_tag_present(skb)) {
1271 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1272 cpu_to_le16(TCC_VLAN_INSERT);
1273 lp->tx_ring[tx_index].tag_ctrl_info =
1274 cpu_to_le16(skb_vlan_tag_get(skb));
1275
1276 }
1277 #endif
1278 lp->tx_dma_addr[tx_index] =
1279 dma_map_single(&lp->pci_dev->dev, skb->data, skb->len,
1280 DMA_TO_DEVICE);
1281 lp->tx_ring[tx_index].buff_phy_addr =
1282 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1283
1284 /* Set FCS and LTINT bits */
1285 wmb();
1286 lp->tx_ring[tx_index].tx_flags |=
1287 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1288
1289 lp->tx_idx++;
1290
1291 /* Trigger an immediate send poll. */
1292 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1293 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1294
1295 if(amd8111e_tx_queue_avail(lp) < 0){
1296 netif_stop_queue(dev);
1297 }
1298 spin_unlock_irqrestore(&lp->lock, flags);
1299 return NETDEV_TX_OK;
1300 }
1301 /* This function returns all the memory mapped registers of the device. */
1302 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1303 {
1304 void __iomem *mmio = lp->mmio;
1305 /* Read only necessary registers */
1306 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1307 buf[1] = readl(mmio + XMT_RING_LEN0);
1308 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1309 buf[3] = readl(mmio + RCV_RING_LEN0);
1310 buf[4] = readl(mmio + CMD0);
1311 buf[5] = readl(mmio + CMD2);
1312 buf[6] = readl(mmio + CMD3);
1313 buf[7] = readl(mmio + CMD7);
1314 buf[8] = readl(mmio + INT0);
1315 buf[9] = readl(mmio + INTEN0);
1316 buf[10] = readl(mmio + LADRF);
1317 buf[11] = readl(mmio + LADRF+4);
1318 buf[12] = readl(mmio + STAT0);
1319 }
1320
1321
1322 /* This function sets promiscuos mode, all-multi mode or the multicast address
1323 * list to the device.
1324 */
1325 static void amd8111e_set_multicast_list(struct net_device *dev)
1326 {
1327 struct netdev_hw_addr *ha;
1328 struct amd8111e_priv *lp = netdev_priv(dev);
1329 u32 mc_filter[2] ;
1330 int bit_num;
1331
1332 if(dev->flags & IFF_PROMISC){
1333 writel( VAL2 | PROM, lp->mmio + CMD2);
1334 return;
1335 }
1336 else
1337 writel( PROM, lp->mmio + CMD2);
1338 if (dev->flags & IFF_ALLMULTI ||
1339 netdev_mc_count(dev) > MAX_FILTER_SIZE) {
1340 /* get all multicast packet */
1341 mc_filter[1] = mc_filter[0] = 0xffffffff;
1342 lp->options |= OPTION_MULTICAST_ENABLE;
1343 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1344 return;
1345 }
1346 if (netdev_mc_empty(dev)) {
1347 /* get only own packets */
1348 mc_filter[1] = mc_filter[0] = 0;
1349 lp->options &= ~OPTION_MULTICAST_ENABLE;
1350 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1351 /* disable promiscuous mode */
1352 writel(PROM, lp->mmio + CMD2);
1353 return;
1354 }
1355 /* load all the multicast addresses in the logic filter */
1356 lp->options |= OPTION_MULTICAST_ENABLE;
1357 mc_filter[1] = mc_filter[0] = 0;
1358 netdev_for_each_mc_addr(ha, dev) {
1359 bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
1360 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1361 }
1362 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1363
1364 /* To eliminate PCI posting bug */
1365 readl(lp->mmio + CMD2);
1366
1367 }
1368
1369 static void amd8111e_get_drvinfo(struct net_device *dev,
1370 struct ethtool_drvinfo *info)
1371 {
1372 struct amd8111e_priv *lp = netdev_priv(dev);
1373 struct pci_dev *pci_dev = lp->pci_dev;
1374 strlcpy(info->driver, MODULE_NAME, sizeof(info->driver));
1375 snprintf(info->fw_version, sizeof(info->fw_version),
1376 "%u", chip_version);
1377 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
1378 }
1379
1380 static int amd8111e_get_regs_len(struct net_device *dev)
1381 {
1382 return AMD8111E_REG_DUMP_LEN;
1383 }
1384
1385 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1386 {
1387 struct amd8111e_priv *lp = netdev_priv(dev);
1388 regs->version = 0;
1389 amd8111e_read_regs(lp, buf);
1390 }
1391
1392 static int amd8111e_get_link_ksettings(struct net_device *dev,
1393 struct ethtool_link_ksettings *cmd)
1394 {
1395 struct amd8111e_priv *lp = netdev_priv(dev);
1396 spin_lock_irq(&lp->lock);
1397 mii_ethtool_get_link_ksettings(&lp->mii_if, cmd);
1398 spin_unlock_irq(&lp->lock);
1399 return 0;
1400 }
1401
1402 static int amd8111e_set_link_ksettings(struct net_device *dev,
1403 const struct ethtool_link_ksettings *cmd)
1404 {
1405 struct amd8111e_priv *lp = netdev_priv(dev);
1406 int res;
1407 spin_lock_irq(&lp->lock);
1408 res = mii_ethtool_set_link_ksettings(&lp->mii_if, cmd);
1409 spin_unlock_irq(&lp->lock);
1410 return res;
1411 }
1412
1413 static int amd8111e_nway_reset(struct net_device *dev)
1414 {
1415 struct amd8111e_priv *lp = netdev_priv(dev);
1416 return mii_nway_restart(&lp->mii_if);
1417 }
1418
1419 static u32 amd8111e_get_link(struct net_device *dev)
1420 {
1421 struct amd8111e_priv *lp = netdev_priv(dev);
1422 return mii_link_ok(&lp->mii_if);
1423 }
1424
1425 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1426 {
1427 struct amd8111e_priv *lp = netdev_priv(dev);
1428 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1429 if (lp->options & OPTION_WOL_ENABLE)
1430 wol_info->wolopts = WAKE_MAGIC;
1431 }
1432
1433 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1434 {
1435 struct amd8111e_priv *lp = netdev_priv(dev);
1436 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1437 return -EINVAL;
1438 spin_lock_irq(&lp->lock);
1439 if (wol_info->wolopts & WAKE_MAGIC)
1440 lp->options |=
1441 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1442 else if(wol_info->wolopts & WAKE_PHY)
1443 lp->options |=
1444 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1445 else
1446 lp->options &= ~OPTION_WOL_ENABLE;
1447 spin_unlock_irq(&lp->lock);
1448 return 0;
1449 }
1450
1451 static const struct ethtool_ops ops = {
1452 .get_drvinfo = amd8111e_get_drvinfo,
1453 .get_regs_len = amd8111e_get_regs_len,
1454 .get_regs = amd8111e_get_regs,
1455 .nway_reset = amd8111e_nway_reset,
1456 .get_link = amd8111e_get_link,
1457 .get_wol = amd8111e_get_wol,
1458 .set_wol = amd8111e_set_wol,
1459 .get_link_ksettings = amd8111e_get_link_ksettings,
1460 .set_link_ksettings = amd8111e_set_link_ksettings,
1461 };
1462
1463 /* This function handles all the ethtool ioctls. It gives driver info,
1464 * gets/sets driver speed, gets memory mapped register values, forces
1465 * auto negotiation, sets/gets WOL options for ethtool application.
1466 */
1467 static int amd8111e_ioctl(struct net_device *dev , struct ifreq *ifr, int cmd)
1468 {
1469 struct mii_ioctl_data *data = if_mii(ifr);
1470 struct amd8111e_priv *lp = netdev_priv(dev);
1471 int err;
1472 u32 mii_regval;
1473
1474 switch(cmd) {
1475 case SIOCGMIIPHY:
1476 data->phy_id = lp->ext_phy_addr;
1477
1478 /* fallthru */
1479 case SIOCGMIIREG:
1480
1481 spin_lock_irq(&lp->lock);
1482 err = amd8111e_read_phy(lp, data->phy_id,
1483 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1484 spin_unlock_irq(&lp->lock);
1485
1486 data->val_out = mii_regval;
1487 return err;
1488
1489 case SIOCSMIIREG:
1490
1491 spin_lock_irq(&lp->lock);
1492 err = amd8111e_write_phy(lp, data->phy_id,
1493 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1494 spin_unlock_irq(&lp->lock);
1495
1496 return err;
1497
1498 default:
1499 /* do nothing */
1500 break;
1501 }
1502 return -EOPNOTSUPP;
1503 }
1504 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1505 {
1506 struct amd8111e_priv *lp = netdev_priv(dev);
1507 int i;
1508 struct sockaddr *addr = p;
1509
1510 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1511 spin_lock_irq(&lp->lock);
1512 /* Setting the MAC address to the device */
1513 for (i = 0; i < ETH_ALEN; i++)
1514 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1515
1516 spin_unlock_irq(&lp->lock);
1517
1518 return 0;
1519 }
1520
1521 /* This function changes the mtu of the device. It restarts the device to
1522 * initialize the descriptor with new receive buffers.
1523 */
1524 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1525 {
1526 struct amd8111e_priv *lp = netdev_priv(dev);
1527 int err;
1528
1529 if (!netif_running(dev)) {
1530 /* new_mtu will be used
1531 * when device starts netxt time
1532 */
1533 dev->mtu = new_mtu;
1534 return 0;
1535 }
1536
1537 spin_lock_irq(&lp->lock);
1538
1539 /* stop the chip */
1540 writel(RUN, lp->mmio + CMD0);
1541
1542 dev->mtu = new_mtu;
1543
1544 err = amd8111e_restart(dev);
1545 spin_unlock_irq(&lp->lock);
1546 if(!err)
1547 netif_start_queue(dev);
1548 return err;
1549 }
1550
1551 static int amd8111e_enable_magicpkt(struct amd8111e_priv *lp)
1552 {
1553 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1554 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1555
1556 /* To eliminate PCI posting bug */
1557 readl(lp->mmio + CMD7);
1558 return 0;
1559 }
1560
1561 static int amd8111e_enable_link_change(struct amd8111e_priv *lp)
1562 {
1563
1564 /* Adapter is already stoped/suspended/interrupt-disabled */
1565 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1566
1567 /* To eliminate PCI posting bug */
1568 readl(lp->mmio + CMD7);
1569 return 0;
1570 }
1571
1572 /* This function is called when a packet transmission fails to complete
1573 * within a reasonable period, on the assumption that an interrupt have
1574 * failed or the interface is locked up. This function will reinitialize
1575 * the hardware.
1576 */
1577 static void amd8111e_tx_timeout(struct net_device *dev, unsigned int txqueue)
1578 {
1579 struct amd8111e_priv *lp = netdev_priv(dev);
1580 int err;
1581
1582 netdev_err(dev, "transmit timed out, resetting\n");
1583
1584 spin_lock_irq(&lp->lock);
1585 err = amd8111e_restart(dev);
1586 spin_unlock_irq(&lp->lock);
1587 if(!err)
1588 netif_wake_queue(dev);
1589 }
1590
1591 static int __maybe_unused amd8111e_suspend(struct device *dev_d)
1592 {
1593 struct net_device *dev = dev_get_drvdata(dev_d);
1594 struct amd8111e_priv *lp = netdev_priv(dev);
1595
1596 if (!netif_running(dev))
1597 return 0;
1598
1599 /* disable the interrupt */
1600 spin_lock_irq(&lp->lock);
1601 amd8111e_disable_interrupt(lp);
1602 spin_unlock_irq(&lp->lock);
1603
1604 netif_device_detach(dev);
1605
1606 /* stop chip */
1607 spin_lock_irq(&lp->lock);
1608 if(lp->options & OPTION_DYN_IPG_ENABLE)
1609 del_timer_sync(&lp->ipg_data.ipg_timer);
1610 amd8111e_stop_chip(lp);
1611 spin_unlock_irq(&lp->lock);
1612
1613 if(lp->options & OPTION_WOL_ENABLE){
1614 /* enable wol */
1615 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1616 amd8111e_enable_magicpkt(lp);
1617 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1618 amd8111e_enable_link_change(lp);
1619
1620 device_set_wakeup_enable(dev_d, 1);
1621
1622 }
1623 else{
1624 device_set_wakeup_enable(dev_d, 0);
1625 }
1626
1627 return 0;
1628 }
1629
1630 static int __maybe_unused amd8111e_resume(struct device *dev_d)
1631 {
1632 struct net_device *dev = dev_get_drvdata(dev_d);
1633 struct amd8111e_priv *lp = netdev_priv(dev);
1634
1635 if (!netif_running(dev))
1636 return 0;
1637
1638 netif_device_attach(dev);
1639
1640 spin_lock_irq(&lp->lock);
1641 amd8111e_restart(dev);
1642 /* Restart ipg timer */
1643 if(lp->options & OPTION_DYN_IPG_ENABLE)
1644 mod_timer(&lp->ipg_data.ipg_timer,
1645 jiffies + IPG_CONVERGE_JIFFIES);
1646 spin_unlock_irq(&lp->lock);
1647
1648 return 0;
1649 }
1650
1651 static void amd8111e_config_ipg(struct timer_list *t)
1652 {
1653 struct amd8111e_priv *lp = from_timer(lp, t, ipg_data.ipg_timer);
1654 struct ipg_info *ipg_data = &lp->ipg_data;
1655 void __iomem *mmio = lp->mmio;
1656 unsigned int prev_col_cnt = ipg_data->col_cnt;
1657 unsigned int total_col_cnt;
1658 unsigned int tmp_ipg;
1659
1660 if(lp->link_config.duplex == DUPLEX_FULL){
1661 ipg_data->ipg = DEFAULT_IPG;
1662 return;
1663 }
1664
1665 if(ipg_data->ipg_state == SSTATE){
1666
1667 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1668
1669 ipg_data->timer_tick = 0;
1670 ipg_data->ipg = MIN_IPG - IPG_STEP;
1671 ipg_data->current_ipg = MIN_IPG;
1672 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1673 ipg_data->ipg_state = CSTATE;
1674 }
1675 else
1676 ipg_data->timer_tick++;
1677 }
1678
1679 if(ipg_data->ipg_state == CSTATE){
1680
1681 /* Get the current collision count */
1682
1683 total_col_cnt = ipg_data->col_cnt =
1684 amd8111e_read_mib(mmio, xmt_collisions);
1685
1686 if ((total_col_cnt - prev_col_cnt) <
1687 (ipg_data->diff_col_cnt)){
1688
1689 ipg_data->diff_col_cnt =
1690 total_col_cnt - prev_col_cnt ;
1691
1692 ipg_data->ipg = ipg_data->current_ipg;
1693 }
1694
1695 ipg_data->current_ipg += IPG_STEP;
1696
1697 if (ipg_data->current_ipg <= MAX_IPG)
1698 tmp_ipg = ipg_data->current_ipg;
1699 else{
1700 tmp_ipg = ipg_data->ipg;
1701 ipg_data->ipg_state = SSTATE;
1702 }
1703 writew((u32)tmp_ipg, mmio + IPG);
1704 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1705 }
1706 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1707 return;
1708
1709 }
1710
1711 static void amd8111e_probe_ext_phy(struct net_device *dev)
1712 {
1713 struct amd8111e_priv *lp = netdev_priv(dev);
1714 int i;
1715
1716 for (i = 0x1e; i >= 0; i--) {
1717 u32 id1, id2;
1718
1719 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1720 continue;
1721 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1722 continue;
1723 lp->ext_phy_id = (id1 << 16) | id2;
1724 lp->ext_phy_addr = i;
1725 return;
1726 }
1727 lp->ext_phy_id = 0;
1728 lp->ext_phy_addr = 1;
1729 }
1730
1731 static const struct net_device_ops amd8111e_netdev_ops = {
1732 .ndo_open = amd8111e_open,
1733 .ndo_stop = amd8111e_close,
1734 .ndo_start_xmit = amd8111e_start_xmit,
1735 .ndo_tx_timeout = amd8111e_tx_timeout,
1736 .ndo_get_stats = amd8111e_get_stats,
1737 .ndo_set_rx_mode = amd8111e_set_multicast_list,
1738 .ndo_validate_addr = eth_validate_addr,
1739 .ndo_set_mac_address = amd8111e_set_mac_address,
1740 .ndo_do_ioctl = amd8111e_ioctl,
1741 .ndo_change_mtu = amd8111e_change_mtu,
1742 #ifdef CONFIG_NET_POLL_CONTROLLER
1743 .ndo_poll_controller = amd8111e_poll,
1744 #endif
1745 };
1746
1747 static int amd8111e_probe_one(struct pci_dev *pdev,
1748 const struct pci_device_id *ent)
1749 {
1750 int err, i;
1751 unsigned long reg_addr,reg_len;
1752 struct amd8111e_priv *lp;
1753 struct net_device *dev;
1754
1755 err = pci_enable_device(pdev);
1756 if(err){
1757 dev_err(&pdev->dev, "Cannot enable new PCI device\n");
1758 return err;
1759 }
1760
1761 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1762 dev_err(&pdev->dev, "Cannot find PCI base address\n");
1763 err = -ENODEV;
1764 goto err_disable_pdev;
1765 }
1766
1767 err = pci_request_regions(pdev, MODULE_NAME);
1768 if(err){
1769 dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
1770 goto err_disable_pdev;
1771 }
1772
1773 pci_set_master(pdev);
1774
1775 /* Find power-management capability. */
1776 if (!pdev->pm_cap) {
1777 dev_err(&pdev->dev, "No Power Management capability\n");
1778 err = -ENODEV;
1779 goto err_free_reg;
1780 }
1781
1782 /* Initialize DMA */
1783 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) < 0) {
1784 dev_err(&pdev->dev, "DMA not supported\n");
1785 err = -ENODEV;
1786 goto err_free_reg;
1787 }
1788
1789 reg_addr = pci_resource_start(pdev, 0);
1790 reg_len = pci_resource_len(pdev, 0);
1791
1792 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1793 if (!dev) {
1794 err = -ENOMEM;
1795 goto err_free_reg;
1796 }
1797
1798 SET_NETDEV_DEV(dev, &pdev->dev);
1799
1800 #if AMD8111E_VLAN_TAG_USED
1801 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX ;
1802 #endif
1803
1804 lp = netdev_priv(dev);
1805 lp->pci_dev = pdev;
1806 lp->amd8111e_net_dev = dev;
1807 lp->pm_cap = pdev->pm_cap;
1808
1809 spin_lock_init(&lp->lock);
1810
1811 lp->mmio = devm_ioremap(&pdev->dev, reg_addr, reg_len);
1812 if (!lp->mmio) {
1813 dev_err(&pdev->dev, "Cannot map device registers\n");
1814 err = -ENOMEM;
1815 goto err_free_dev;
1816 }
1817
1818 /* Initializing MAC address */
1819 for (i = 0; i < ETH_ALEN; i++)
1820 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1821
1822 /* Setting user defined parametrs */
1823 lp->ext_phy_option = speed_duplex[card_idx];
1824 if(coalesce[card_idx])
1825 lp->options |= OPTION_INTR_COAL_ENABLE;
1826 if(dynamic_ipg[card_idx++])
1827 lp->options |= OPTION_DYN_IPG_ENABLE;
1828
1829
1830 /* Initialize driver entry points */
1831 dev->netdev_ops = &amd8111e_netdev_ops;
1832 dev->ethtool_ops = &ops;
1833 dev->irq =pdev->irq;
1834 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1835 dev->min_mtu = AMD8111E_MIN_MTU;
1836 dev->max_mtu = AMD8111E_MAX_MTU;
1837 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1838
1839 #if AMD8111E_VLAN_TAG_USED
1840 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
1841 #endif
1842 /* Probe the external PHY */
1843 amd8111e_probe_ext_phy(dev);
1844
1845 /* setting mii default values */
1846 lp->mii_if.dev = dev;
1847 lp->mii_if.mdio_read = amd8111e_mdio_read;
1848 lp->mii_if.mdio_write = amd8111e_mdio_write;
1849 lp->mii_if.phy_id = lp->ext_phy_addr;
1850
1851 /* Set receive buffer length and set jumbo option*/
1852 amd8111e_set_rx_buff_len(dev);
1853
1854
1855 err = register_netdev(dev);
1856 if (err) {
1857 dev_err(&pdev->dev, "Cannot register net device\n");
1858 goto err_free_dev;
1859 }
1860
1861 pci_set_drvdata(pdev, dev);
1862
1863 /* Initialize software ipg timer */
1864 if(lp->options & OPTION_DYN_IPG_ENABLE){
1865 timer_setup(&lp->ipg_data.ipg_timer, amd8111e_config_ipg, 0);
1866 lp->ipg_data.ipg_timer.expires = jiffies +
1867 IPG_CONVERGE_JIFFIES;
1868 lp->ipg_data.ipg = DEFAULT_IPG;
1869 lp->ipg_data.ipg_state = CSTATE;
1870 }
1871
1872 /* display driver and device information */
1873 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
1874 dev_info(&pdev->dev, "[ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1875 chip_version, dev->dev_addr);
1876 if (lp->ext_phy_id)
1877 dev_info(&pdev->dev, "Found MII PHY ID 0x%08x at address 0x%02x\n",
1878 lp->ext_phy_id, lp->ext_phy_addr);
1879 else
1880 dev_info(&pdev->dev, "Couldn't detect MII PHY, assuming address 0x01\n");
1881
1882 return 0;
1883
1884 err_free_dev:
1885 free_netdev(dev);
1886
1887 err_free_reg:
1888 pci_release_regions(pdev);
1889
1890 err_disable_pdev:
1891 pci_disable_device(pdev);
1892 return err;
1893
1894 }
1895
1896 static void amd8111e_remove_one(struct pci_dev *pdev)
1897 {
1898 struct net_device *dev = pci_get_drvdata(pdev);
1899
1900 if (dev) {
1901 unregister_netdev(dev);
1902 free_netdev(dev);
1903 pci_release_regions(pdev);
1904 pci_disable_device(pdev);
1905 }
1906 }
1907
1908 static const struct pci_device_id amd8111e_pci_tbl[] = {
1909 {
1910 .vendor = PCI_VENDOR_ID_AMD,
1911 .device = PCI_DEVICE_ID_AMD8111E_7462,
1912 },
1913 {
1914 .vendor = 0,
1915 }
1916 };
1917 MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
1918
1919 static SIMPLE_DEV_PM_OPS(amd8111e_pm_ops, amd8111e_suspend, amd8111e_resume);
1920
1921 static struct pci_driver amd8111e_driver = {
1922 .name = MODULE_NAME,
1923 .id_table = amd8111e_pci_tbl,
1924 .probe = amd8111e_probe_one,
1925 .remove = amd8111e_remove_one,
1926 .driver.pm = &amd8111e_pm_ops
1927 };
1928
1929 module_pci_driver(amd8111e_driver);
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