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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
16Module Name:
17
18 amd8111e.c
19
20Abstract:
21
22 AMD8111 based 10/100 Ethernet Controller Driver.
23
24Environment:
25
26 Kernel Mode
27
28Revision 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"
87MODULE_AUTHOR("Advanced Micro Devices, Inc.");
88MODULE_DESCRIPTION("AMD8111 based 10/100 Ethernet Controller.");
89MODULE_LICENSE("GPL");
90module_param_array(speed_duplex, int, NULL, 0);
91MODULE_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");
92module_param_array(coalesce, bool, NULL, 0);
93MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
94module_param_array(dynamic_ipg, bool, NULL, 0);
95MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
96
97/* This function will read the PHY registers. */
98static 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;
120err_phy_read:
121 *val = 0;
122 return -EINVAL;
123
124}
125
126/* This function will write into PHY registers. */
127static 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
151err_phy_write:
152 return -EINVAL;
153
154}
155
156/* This is the mii register read function provided to the mii interface. */
157static 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, ®_val);
163 return reg_val;
164
165}
166
167/* This is the mii register write function provided to the mii interface. */
168static 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 */
179static 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 */
220static 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 */
256static 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 */
278static 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
344err_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
350err_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
356err_no_mem:
357 return -ENOMEM;
358}
359
360/* This function will set the interrupt coalescing according
361 * to the input arguments
362 */
363static 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) |
385 timeout, 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) |
399 timeout, 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. */
422static 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. */
499static 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 */
590static 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. */
607static 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. */
616static 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 */
640static 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 */
682static 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
769err_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. */
793static 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 } else {
825 lp->link_config.speed = SPEED_INVALID;
826 lp->link_config.duplex = DUPLEX_INVALID;
827 lp->link_config.autoneg = AUTONEG_INVALID;
828 netdev_info(dev, "Link is Down.\n");
829 netif_carrier_off(dev);
830 }
831
832 return 0;
833}
834
835/* This function reads the mib counters. */
836static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
837{
838 unsigned int status;
839 unsigned int data;
840 unsigned int repeat = REPEAT_CNT;
841
842 writew(MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
843 do {
844 status = readw(mmio + MIB_ADDR);
845 udelay(2); /* controller takes MAX 2 us to get mib data */
846 }
847 while (--repeat && (status & MIB_CMD_ACTIVE));
848
849 data = readl(mmio + MIB_DATA);
850 return data;
851}
852
853/* This function reads the mib registers and returns the hardware statistics.
854 * It updates previous internal driver statistics with new values.
855 */
856static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
857{
858 struct amd8111e_priv *lp = netdev_priv(dev);
859 void __iomem *mmio = lp->mmio;
860 unsigned long flags;
861 struct net_device_stats *new_stats = &dev->stats;
862
863 if (!lp->opened)
864 return new_stats;
865 spin_lock_irqsave(&lp->lock, flags);
866
867 /* stats.rx_packets */
868 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
869 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
870 amd8111e_read_mib(mmio, rcv_unicast_pkts);
871
872 /* stats.tx_packets */
873 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
874
875 /*stats.rx_bytes */
876 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
877
878 /* stats.tx_bytes */
879 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
880
881 /* stats.rx_errors */
882 /* hw errors + errors driver reported */
883 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
884 amd8111e_read_mib(mmio, rcv_fragments)+
885 amd8111e_read_mib(mmio, rcv_jabbers)+
886 amd8111e_read_mib(mmio, rcv_alignment_errors)+
887 amd8111e_read_mib(mmio, rcv_fcs_errors)+
888 amd8111e_read_mib(mmio, rcv_miss_pkts)+
889 lp->drv_rx_errors;
890
891 /* stats.tx_errors */
892 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
893
894 /* stats.rx_dropped*/
895 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
896
897 /* stats.tx_dropped*/
898 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
899
900 /* stats.multicast*/
901 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
902
903 /* stats.collisions*/
904 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
905
906 /* stats.rx_length_errors*/
907 new_stats->rx_length_errors =
908 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
909 amd8111e_read_mib(mmio, rcv_oversize_pkts);
910
911 /* stats.rx_over_errors*/
912 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
913
914 /* stats.rx_crc_errors*/
915 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
916
917 /* stats.rx_frame_errors*/
918 new_stats->rx_frame_errors =
919 amd8111e_read_mib(mmio, rcv_alignment_errors);
920
921 /* stats.rx_fifo_errors */
922 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
923
924 /* stats.rx_missed_errors */
925 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
926
927 /* stats.tx_aborted_errors*/
928 new_stats->tx_aborted_errors =
929 amd8111e_read_mib(mmio, xmt_excessive_collision);
930
931 /* stats.tx_carrier_errors*/
932 new_stats->tx_carrier_errors =
933 amd8111e_read_mib(mmio, xmt_loss_carrier);
934
935 /* stats.tx_fifo_errors*/
936 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
937
938 /* stats.tx_window_errors*/
939 new_stats->tx_window_errors =
940 amd8111e_read_mib(mmio, xmt_late_collision);
941
942 /* Reset the mibs for collecting new statistics */
943 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
944
945 spin_unlock_irqrestore(&lp->lock, flags);
946
947 return new_stats;
948}
949
950/* This function recalculate the interrupt coalescing mode on every interrupt
951 * according to the datarate and the packet rate.
952 */
953static int amd8111e_calc_coalesce(struct net_device *dev)
954{
955 struct amd8111e_priv *lp = netdev_priv(dev);
956 struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
957 int tx_pkt_rate;
958 int rx_pkt_rate;
959 int tx_data_rate;
960 int rx_data_rate;
961 int rx_pkt_size;
962 int tx_pkt_size;
963
964 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
965 coal_conf->tx_prev_packets = coal_conf->tx_packets;
966
967 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
968 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
969
970 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
971 coal_conf->rx_prev_packets = coal_conf->rx_packets;
972
973 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
974 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
975
976 if (rx_pkt_rate < 800) {
977 if (coal_conf->rx_coal_type != NO_COALESCE) {
978
979 coal_conf->rx_timeout = 0x0;
980 coal_conf->rx_event_count = 0;
981 amd8111e_set_coalesce(dev, RX_INTR_COAL);
982 coal_conf->rx_coal_type = NO_COALESCE;
983 }
984 } else {
985
986 rx_pkt_size = rx_data_rate/rx_pkt_rate;
987 if (rx_pkt_size < 128) {
988 if (coal_conf->rx_coal_type != NO_COALESCE) {
989
990 coal_conf->rx_timeout = 0;
991 coal_conf->rx_event_count = 0;
992 amd8111e_set_coalesce(dev, RX_INTR_COAL);
993 coal_conf->rx_coal_type = NO_COALESCE;
994 }
995
996 } else if ((rx_pkt_size >= 128) && (rx_pkt_size < 512)) {
997
998 if (coal_conf->rx_coal_type != LOW_COALESCE) {
999 coal_conf->rx_timeout = 1;
1000 coal_conf->rx_event_count = 4;
1001 amd8111e_set_coalesce(dev, RX_INTR_COAL);
1002 coal_conf->rx_coal_type = LOW_COALESCE;
1003 }
1004 } else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)) {
1005
1006 if (coal_conf->rx_coal_type != MEDIUM_COALESCE) {
1007 coal_conf->rx_timeout = 1;
1008 coal_conf->rx_event_count = 4;
1009 amd8111e_set_coalesce(dev, RX_INTR_COAL);
1010 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1011 }
1012
1013 } else if (rx_pkt_size >= 1024) {
1014
1015 if (coal_conf->rx_coal_type != HIGH_COALESCE) {
1016 coal_conf->rx_timeout = 2;
1017 coal_conf->rx_event_count = 3;
1018 amd8111e_set_coalesce(dev, RX_INTR_COAL);
1019 coal_conf->rx_coal_type = HIGH_COALESCE;
1020 }
1021 }
1022 }
1023 /* NOW FOR TX INTR COALESC */
1024 if (tx_pkt_rate < 800) {
1025 if (coal_conf->tx_coal_type != NO_COALESCE) {
1026
1027 coal_conf->tx_timeout = 0x0;
1028 coal_conf->tx_event_count = 0;
1029 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1030 coal_conf->tx_coal_type = NO_COALESCE;
1031 }
1032 } else {
1033
1034 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1035 if (tx_pkt_size < 128) {
1036
1037 if (coal_conf->tx_coal_type != NO_COALESCE) {
1038
1039 coal_conf->tx_timeout = 0;
1040 coal_conf->tx_event_count = 0;
1041 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1042 coal_conf->tx_coal_type = NO_COALESCE;
1043 }
1044
1045 } else if ((tx_pkt_size >= 128) && (tx_pkt_size < 512)) {
1046
1047 if (coal_conf->tx_coal_type != LOW_COALESCE) {
1048 coal_conf->tx_timeout = 1;
1049 coal_conf->tx_event_count = 2;
1050 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1051 coal_conf->tx_coal_type = LOW_COALESCE;
1052
1053 }
1054 } else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)) {
1055
1056 if (coal_conf->tx_coal_type != MEDIUM_COALESCE) {
1057 coal_conf->tx_timeout = 2;
1058 coal_conf->tx_event_count = 5;
1059 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1060 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1061 }
1062 } else if (tx_pkt_size >= 1024) {
1063 if (coal_conf->tx_coal_type != HIGH_COALESCE) {
1064 coal_conf->tx_timeout = 4;
1065 coal_conf->tx_event_count = 8;
1066 amd8111e_set_coalesce(dev, TX_INTR_COAL);
1067 coal_conf->tx_coal_type = HIGH_COALESCE;
1068 }
1069 }
1070 }
1071 return 0;
1072
1073}
1074
1075/* This is device interrupt function. It handles transmit,
1076 * receive,link change and hardware timer interrupts.
1077 */
1078static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
1079{
1080
1081 struct net_device *dev = (struct net_device *)dev_id;
1082 struct amd8111e_priv *lp = netdev_priv(dev);
1083 void __iomem *mmio = lp->mmio;
1084 unsigned int intr0, intren0;
1085 unsigned int handled = 1;
1086
1087 if (unlikely(dev == NULL))
1088 return IRQ_NONE;
1089
1090 spin_lock(&lp->lock);
1091
1092 /* disabling interrupt */
1093 writel(INTREN, mmio + CMD0);
1094
1095 /* Read interrupt status */
1096 intr0 = readl(mmio + INT0);
1097 intren0 = readl(mmio + INTEN0);
1098
1099 /* Process all the INT event until INTR bit is clear. */
1100
1101 if (!(intr0 & INTR)) {
1102 handled = 0;
1103 goto err_no_interrupt;
1104 }
1105
1106 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1107 writel(intr0, mmio + INT0);
1108
1109 /* Check if Receive Interrupt has occurred. */
1110 if (intr0 & RINT0) {
1111 if (napi_schedule_prep(&lp->napi)) {
1112 /* Disable receive interupts */
1113 writel(RINTEN0, mmio + INTEN0);
1114 /* Schedule a polling routine */
1115 __napi_schedule(&lp->napi);
1116 } else if (intren0 & RINTEN0) {
1117 netdev_dbg(dev, "************Driver bug! interrupt while in poll\n");
1118 /* Fix by disable receive interrupts */
1119 writel(RINTEN0, mmio + INTEN0);
1120 }
1121 }
1122
1123 /* Check if Transmit Interrupt has occurred. */
1124 if (intr0 & TINT0)
1125 amd8111e_tx(dev);
1126
1127 /* Check if Link Change Interrupt has occurred. */
1128 if (intr0 & LCINT)
1129 amd8111e_link_change(dev);
1130
1131 /* Check if Hardware Timer Interrupt has occurred. */
1132 if (intr0 & STINT)
1133 amd8111e_calc_coalesce(dev);
1134
1135err_no_interrupt:
1136 writel(VAL0 | INTREN, mmio + CMD0);
1137
1138 spin_unlock(&lp->lock);
1139
1140 return IRQ_RETVAL(handled);
1141}
1142
1143#ifdef CONFIG_NET_POLL_CONTROLLER
1144static void amd8111e_poll(struct net_device *dev)
1145{
1146 unsigned long flags;
1147 local_irq_save(flags);
1148 amd8111e_interrupt(0, dev);
1149 local_irq_restore(flags);
1150}
1151#endif
1152
1153
1154/* This function closes the network interface and updates
1155 * the statistics so that most recent statistics will be
1156 * available after the interface is down.
1157 */
1158static int amd8111e_close(struct net_device *dev)
1159{
1160 struct amd8111e_priv *lp = netdev_priv(dev);
1161 netif_stop_queue(dev);
1162
1163 napi_disable(&lp->napi);
1164
1165 spin_lock_irq(&lp->lock);
1166
1167 amd8111e_disable_interrupt(lp);
1168 amd8111e_stop_chip(lp);
1169
1170 /* Free transmit and receive skbs */
1171 amd8111e_free_skbs(lp->amd8111e_net_dev);
1172
1173 netif_carrier_off(lp->amd8111e_net_dev);
1174
1175 /* Delete ipg timer */
1176 if (lp->options & OPTION_DYN_IPG_ENABLE)
1177 del_timer_sync(&lp->ipg_data.ipg_timer);
1178
1179 spin_unlock_irq(&lp->lock);
1180 free_irq(dev->irq, dev);
1181 amd8111e_free_ring(lp);
1182
1183 /* Update the statistics before closing */
1184 amd8111e_get_stats(dev);
1185 lp->opened = 0;
1186 return 0;
1187}
1188
1189/* This function opens new interface.It requests irq for the device,
1190 * initializes the device,buffers and descriptors, and starts the device.
1191 */
1192static int amd8111e_open(struct net_device *dev)
1193{
1194 struct amd8111e_priv *lp = netdev_priv(dev);
1195
1196 if (dev->irq == 0 || request_irq(dev->irq, amd8111e_interrupt,
1197 IRQF_SHARED, dev->name, dev))
1198 return -EAGAIN;
1199
1200 napi_enable(&lp->napi);
1201
1202 spin_lock_irq(&lp->lock);
1203
1204 amd8111e_init_hw_default(lp);
1205
1206 if (amd8111e_restart(dev)) {
1207 spin_unlock_irq(&lp->lock);
1208 napi_disable(&lp->napi);
1209 if (dev->irq)
1210 free_irq(dev->irq, dev);
1211 return -ENOMEM;
1212 }
1213 /* Start ipg timer */
1214 if (lp->options & OPTION_DYN_IPG_ENABLE) {
1215 add_timer(&lp->ipg_data.ipg_timer);
1216 netdev_info(dev, "Dynamic IPG Enabled\n");
1217 }
1218
1219 lp->opened = 1;
1220
1221 spin_unlock_irq(&lp->lock);
1222
1223 netif_start_queue(dev);
1224
1225 return 0;
1226}
1227
1228/* This function checks if there is any transmit descriptors
1229 * available to queue more packet.
1230 */
1231static int amd8111e_tx_queue_avail(struct amd8111e_priv *lp)
1232{
1233 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1234 if (lp->tx_skbuff[tx_index])
1235 return -1;
1236 else
1237 return 0;
1238
1239}
1240
1241/* This function will queue the transmit packets to the
1242 * descriptors and will trigger the send operation. It also
1243 * initializes the transmit descriptors with buffer physical address,
1244 * byte count, ownership to hardware etc.
1245 */
1246static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
1247 struct net_device *dev)
1248{
1249 struct amd8111e_priv *lp = netdev_priv(dev);
1250 int tx_index;
1251 unsigned long flags;
1252
1253 spin_lock_irqsave(&lp->lock, flags);
1254
1255 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1256
1257 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1258
1259 lp->tx_skbuff[tx_index] = skb;
1260 lp->tx_ring[tx_index].tx_flags = 0;
1261
1262#if AMD8111E_VLAN_TAG_USED
1263 if (skb_vlan_tag_present(skb)) {
1264 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1265 cpu_to_le16(TCC_VLAN_INSERT);
1266 lp->tx_ring[tx_index].tag_ctrl_info =
1267 cpu_to_le16(skb_vlan_tag_get(skb));
1268
1269 }
1270#endif
1271 lp->tx_dma_addr[tx_index] =
1272 dma_map_single(&lp->pci_dev->dev, skb->data, skb->len,
1273 DMA_TO_DEVICE);
1274 lp->tx_ring[tx_index].buff_phy_addr =
1275 cpu_to_le32(lp->tx_dma_addr[tx_index]);
1276
1277 /* Set FCS and LTINT bits */
1278 wmb();
1279 lp->tx_ring[tx_index].tx_flags |=
1280 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1281
1282 lp->tx_idx++;
1283
1284 /* Trigger an immediate send poll. */
1285 writel(VAL1 | TDMD0, lp->mmio + CMD0);
1286 writel(VAL2 | RDMD0, lp->mmio + CMD0);
1287
1288 if (amd8111e_tx_queue_avail(lp) < 0) {
1289 netif_stop_queue(dev);
1290 }
1291 spin_unlock_irqrestore(&lp->lock, flags);
1292 return NETDEV_TX_OK;
1293}
1294/* This function returns all the memory mapped registers of the device. */
1295static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1296{
1297 void __iomem *mmio = lp->mmio;
1298 /* Read only necessary registers */
1299 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1300 buf[1] = readl(mmio + XMT_RING_LEN0);
1301 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1302 buf[3] = readl(mmio + RCV_RING_LEN0);
1303 buf[4] = readl(mmio + CMD0);
1304 buf[5] = readl(mmio + CMD2);
1305 buf[6] = readl(mmio + CMD3);
1306 buf[7] = readl(mmio + CMD7);
1307 buf[8] = readl(mmio + INT0);
1308 buf[9] = readl(mmio + INTEN0);
1309 buf[10] = readl(mmio + LADRF);
1310 buf[11] = readl(mmio + LADRF+4);
1311 buf[12] = readl(mmio + STAT0);
1312}
1313
1314
1315/* This function sets promiscuos mode, all-multi mode or the multicast address
1316 * list to the device.
1317 */
1318static void amd8111e_set_multicast_list(struct net_device *dev)
1319{
1320 struct netdev_hw_addr *ha;
1321 struct amd8111e_priv *lp = netdev_priv(dev);
1322 u32 mc_filter[2];
1323 int bit_num;
1324
1325 if (dev->flags & IFF_PROMISC) {
1326 writel(VAL2 | PROM, lp->mmio + CMD2);
1327 return;
1328 }
1329 else
1330 writel(PROM, lp->mmio + CMD2);
1331 if (dev->flags & IFF_ALLMULTI ||
1332 netdev_mc_count(dev) > MAX_FILTER_SIZE) {
1333 /* get all multicast packet */
1334 mc_filter[1] = mc_filter[0] = 0xffffffff;
1335 lp->options |= OPTION_MULTICAST_ENABLE;
1336 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1337 return;
1338 }
1339 if (netdev_mc_empty(dev)) {
1340 /* get only own packets */
1341 mc_filter[1] = mc_filter[0] = 0;
1342 lp->options &= ~OPTION_MULTICAST_ENABLE;
1343 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1344 /* disable promiscuous mode */
1345 writel(PROM, lp->mmio + CMD2);
1346 return;
1347 }
1348 /* load all the multicast addresses in the logic filter */
1349 lp->options |= OPTION_MULTICAST_ENABLE;
1350 mc_filter[1] = mc_filter[0] = 0;
1351 netdev_for_each_mc_addr(ha, dev) {
1352 bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
1353 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1354 }
1355 amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
1356
1357 /* To eliminate PCI posting bug */
1358 readl(lp->mmio + CMD2);
1359
1360}
1361
1362static void amd8111e_get_drvinfo(struct net_device *dev,
1363 struct ethtool_drvinfo *info)
1364{
1365 struct amd8111e_priv *lp = netdev_priv(dev);
1366 struct pci_dev *pci_dev = lp->pci_dev;
1367 strlcpy(info->driver, MODULE_NAME, sizeof(info->driver));
1368 snprintf(info->fw_version, sizeof(info->fw_version),
1369 "%u", chip_version);
1370 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
1371}
1372
1373static int amd8111e_get_regs_len(struct net_device *dev)
1374{
1375 return AMD8111E_REG_DUMP_LEN;
1376}
1377
1378static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1379{
1380 struct amd8111e_priv *lp = netdev_priv(dev);
1381 regs->version = 0;
1382 amd8111e_read_regs(lp, buf);
1383}
1384
1385static int amd8111e_get_link_ksettings(struct net_device *dev,
1386 struct ethtool_link_ksettings *cmd)
1387{
1388 struct amd8111e_priv *lp = netdev_priv(dev);
1389 spin_lock_irq(&lp->lock);
1390 mii_ethtool_get_link_ksettings(&lp->mii_if, cmd);
1391 spin_unlock_irq(&lp->lock);
1392 return 0;
1393}
1394
1395static int amd8111e_set_link_ksettings(struct net_device *dev,
1396 const struct ethtool_link_ksettings *cmd)
1397{
1398 struct amd8111e_priv *lp = netdev_priv(dev);
1399 int res;
1400 spin_lock_irq(&lp->lock);
1401 res = mii_ethtool_set_link_ksettings(&lp->mii_if, cmd);
1402 spin_unlock_irq(&lp->lock);
1403 return res;
1404}
1405
1406static int amd8111e_nway_reset(struct net_device *dev)
1407{
1408 struct amd8111e_priv *lp = netdev_priv(dev);
1409 return mii_nway_restart(&lp->mii_if);
1410}
1411
1412static u32 amd8111e_get_link(struct net_device *dev)
1413{
1414 struct amd8111e_priv *lp = netdev_priv(dev);
1415 return mii_link_ok(&lp->mii_if);
1416}
1417
1418static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1419{
1420 struct amd8111e_priv *lp = netdev_priv(dev);
1421 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1422 if (lp->options & OPTION_WOL_ENABLE)
1423 wol_info->wolopts = WAKE_MAGIC;
1424}
1425
1426static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1427{
1428 struct amd8111e_priv *lp = netdev_priv(dev);
1429 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1430 return -EINVAL;
1431 spin_lock_irq(&lp->lock);
1432 if (wol_info->wolopts & WAKE_MAGIC)
1433 lp->options |=
1434 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1435 else if (wol_info->wolopts & WAKE_PHY)
1436 lp->options |=
1437 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1438 else
1439 lp->options &= ~OPTION_WOL_ENABLE;
1440 spin_unlock_irq(&lp->lock);
1441 return 0;
1442}
1443
1444static const struct ethtool_ops ops = {
1445 .get_drvinfo = amd8111e_get_drvinfo,
1446 .get_regs_len = amd8111e_get_regs_len,
1447 .get_regs = amd8111e_get_regs,
1448 .nway_reset = amd8111e_nway_reset,
1449 .get_link = amd8111e_get_link,
1450 .get_wol = amd8111e_get_wol,
1451 .set_wol = amd8111e_set_wol,
1452 .get_link_ksettings = amd8111e_get_link_ksettings,
1453 .set_link_ksettings = amd8111e_set_link_ksettings,
1454};
1455
1456/* This function handles all the ethtool ioctls. It gives driver info,
1457 * gets/sets driver speed, gets memory mapped register values, forces
1458 * auto negotiation, sets/gets WOL options for ethtool application.
1459 */
1460static int amd8111e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1461{
1462 struct mii_ioctl_data *data = if_mii(ifr);
1463 struct amd8111e_priv *lp = netdev_priv(dev);
1464 int err;
1465 u32 mii_regval;
1466
1467 switch (cmd) {
1468 case SIOCGMIIPHY:
1469 data->phy_id = lp->ext_phy_addr;
1470
1471 fallthrough;
1472 case SIOCGMIIREG:
1473
1474 spin_lock_irq(&lp->lock);
1475 err = amd8111e_read_phy(lp, data->phy_id,
1476 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1477 spin_unlock_irq(&lp->lock);
1478
1479 data->val_out = mii_regval;
1480 return err;
1481
1482 case SIOCSMIIREG:
1483
1484 spin_lock_irq(&lp->lock);
1485 err = amd8111e_write_phy(lp, data->phy_id,
1486 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1487 spin_unlock_irq(&lp->lock);
1488
1489 return err;
1490
1491 default:
1492 /* do nothing */
1493 break;
1494 }
1495 return -EOPNOTSUPP;
1496}
1497static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1498{
1499 struct amd8111e_priv *lp = netdev_priv(dev);
1500 int i;
1501 struct sockaddr *addr = p;
1502
1503 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1504 spin_lock_irq(&lp->lock);
1505 /* Setting the MAC address to the device */
1506 for (i = 0; i < ETH_ALEN; i++)
1507 writeb(dev->dev_addr[i], lp->mmio + PADR + i);
1508
1509 spin_unlock_irq(&lp->lock);
1510
1511 return 0;
1512}
1513
1514/* This function changes the mtu of the device. It restarts the device to
1515 * initialize the descriptor with new receive buffers.
1516 */
1517static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1518{
1519 struct amd8111e_priv *lp = netdev_priv(dev);
1520 int err;
1521
1522 if (!netif_running(dev)) {
1523 /* new_mtu will be used
1524 * when device starts netxt time
1525 */
1526 dev->mtu = new_mtu;
1527 return 0;
1528 }
1529
1530 spin_lock_irq(&lp->lock);
1531
1532 /* stop the chip */
1533 writel(RUN, lp->mmio + CMD0);
1534
1535 dev->mtu = new_mtu;
1536
1537 err = amd8111e_restart(dev);
1538 spin_unlock_irq(&lp->lock);
1539 if (!err)
1540 netif_start_queue(dev);
1541 return err;
1542}
1543
1544static int amd8111e_enable_magicpkt(struct amd8111e_priv *lp)
1545{
1546 writel(VAL1 | MPPLBA, lp->mmio + CMD3);
1547 writel(VAL0 | MPEN_SW, lp->mmio + CMD7);
1548
1549 /* To eliminate PCI posting bug */
1550 readl(lp->mmio + CMD7);
1551 return 0;
1552}
1553
1554static int amd8111e_enable_link_change(struct amd8111e_priv *lp)
1555{
1556
1557 /* Adapter is already stoped/suspended/interrupt-disabled */
1558 writel(VAL0 | LCMODE_SW, lp->mmio + CMD7);
1559
1560 /* To eliminate PCI posting bug */
1561 readl(lp->mmio + CMD7);
1562 return 0;
1563}
1564
1565/* This function is called when a packet transmission fails to complete
1566 * within a reasonable period, on the assumption that an interrupt have
1567 * failed or the interface is locked up. This function will reinitialize
1568 * the hardware.
1569 */
1570static void amd8111e_tx_timeout(struct net_device *dev, unsigned int txqueue)
1571{
1572 struct amd8111e_priv *lp = netdev_priv(dev);
1573 int err;
1574
1575 netdev_err(dev, "transmit timed out, resetting\n");
1576
1577 spin_lock_irq(&lp->lock);
1578 err = amd8111e_restart(dev);
1579 spin_unlock_irq(&lp->lock);
1580 if (!err)
1581 netif_wake_queue(dev);
1582}
1583
1584static int __maybe_unused amd8111e_suspend(struct device *dev_d)
1585{
1586 struct net_device *dev = dev_get_drvdata(dev_d);
1587 struct amd8111e_priv *lp = netdev_priv(dev);
1588
1589 if (!netif_running(dev))
1590 return 0;
1591
1592 /* disable the interrupt */
1593 spin_lock_irq(&lp->lock);
1594 amd8111e_disable_interrupt(lp);
1595 spin_unlock_irq(&lp->lock);
1596
1597 netif_device_detach(dev);
1598
1599 /* stop chip */
1600 spin_lock_irq(&lp->lock);
1601 if (lp->options & OPTION_DYN_IPG_ENABLE)
1602 del_timer_sync(&lp->ipg_data.ipg_timer);
1603 amd8111e_stop_chip(lp);
1604 spin_unlock_irq(&lp->lock);
1605
1606 if (lp->options & OPTION_WOL_ENABLE) {
1607 /* enable wol */
1608 if (lp->options & OPTION_WAKE_MAGIC_ENABLE)
1609 amd8111e_enable_magicpkt(lp);
1610 if (lp->options & OPTION_WAKE_PHY_ENABLE)
1611 amd8111e_enable_link_change(lp);
1612
1613 device_set_wakeup_enable(dev_d, 1);
1614
1615 } else {
1616 device_set_wakeup_enable(dev_d, 0);
1617 }
1618
1619 return 0;
1620}
1621
1622static int __maybe_unused amd8111e_resume(struct device *dev_d)
1623{
1624 struct net_device *dev = dev_get_drvdata(dev_d);
1625 struct amd8111e_priv *lp = netdev_priv(dev);
1626
1627 if (!netif_running(dev))
1628 return 0;
1629
1630 netif_device_attach(dev);
1631
1632 spin_lock_irq(&lp->lock);
1633 amd8111e_restart(dev);
1634 /* Restart ipg timer */
1635 if (lp->options & OPTION_DYN_IPG_ENABLE)
1636 mod_timer(&lp->ipg_data.ipg_timer,
1637 jiffies + IPG_CONVERGE_JIFFIES);
1638 spin_unlock_irq(&lp->lock);
1639
1640 return 0;
1641}
1642
1643static void amd8111e_config_ipg(struct timer_list *t)
1644{
1645 struct amd8111e_priv *lp = from_timer(lp, t, ipg_data.ipg_timer);
1646 struct ipg_info *ipg_data = &lp->ipg_data;
1647 void __iomem *mmio = lp->mmio;
1648 unsigned int prev_col_cnt = ipg_data->col_cnt;
1649 unsigned int total_col_cnt;
1650 unsigned int tmp_ipg;
1651
1652 if (lp->link_config.duplex == DUPLEX_FULL) {
1653 ipg_data->ipg = DEFAULT_IPG;
1654 return;
1655 }
1656
1657 if (ipg_data->ipg_state == SSTATE) {
1658
1659 if (ipg_data->timer_tick == IPG_STABLE_TIME) {
1660
1661 ipg_data->timer_tick = 0;
1662 ipg_data->ipg = MIN_IPG - IPG_STEP;
1663 ipg_data->current_ipg = MIN_IPG;
1664 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1665 ipg_data->ipg_state = CSTATE;
1666 }
1667 else
1668 ipg_data->timer_tick++;
1669 }
1670
1671 if (ipg_data->ipg_state == CSTATE) {
1672
1673 /* Get the current collision count */
1674
1675 total_col_cnt = ipg_data->col_cnt =
1676 amd8111e_read_mib(mmio, xmt_collisions);
1677
1678 if ((total_col_cnt - prev_col_cnt) <
1679 (ipg_data->diff_col_cnt)) {
1680
1681 ipg_data->diff_col_cnt =
1682 total_col_cnt - prev_col_cnt;
1683
1684 ipg_data->ipg = ipg_data->current_ipg;
1685 }
1686
1687 ipg_data->current_ipg += IPG_STEP;
1688
1689 if (ipg_data->current_ipg <= MAX_IPG)
1690 tmp_ipg = ipg_data->current_ipg;
1691 else {
1692 tmp_ipg = ipg_data->ipg;
1693 ipg_data->ipg_state = SSTATE;
1694 }
1695 writew((u32)tmp_ipg, mmio + IPG);
1696 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1697 }
1698 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1699 return;
1700
1701}
1702
1703static void amd8111e_probe_ext_phy(struct net_device *dev)
1704{
1705 struct amd8111e_priv *lp = netdev_priv(dev);
1706 int i;
1707
1708 for (i = 0x1e; i >= 0; i--) {
1709 u32 id1, id2;
1710
1711 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1712 continue;
1713 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1714 continue;
1715 lp->ext_phy_id = (id1 << 16) | id2;
1716 lp->ext_phy_addr = i;
1717 return;
1718 }
1719 lp->ext_phy_id = 0;
1720 lp->ext_phy_addr = 1;
1721}
1722
1723static const struct net_device_ops amd8111e_netdev_ops = {
1724 .ndo_open = amd8111e_open,
1725 .ndo_stop = amd8111e_close,
1726 .ndo_start_xmit = amd8111e_start_xmit,
1727 .ndo_tx_timeout = amd8111e_tx_timeout,
1728 .ndo_get_stats = amd8111e_get_stats,
1729 .ndo_set_rx_mode = amd8111e_set_multicast_list,
1730 .ndo_validate_addr = eth_validate_addr,
1731 .ndo_set_mac_address = amd8111e_set_mac_address,
1732 .ndo_do_ioctl = amd8111e_ioctl,
1733 .ndo_change_mtu = amd8111e_change_mtu,
1734#ifdef CONFIG_NET_POLL_CONTROLLER
1735 .ndo_poll_controller = amd8111e_poll,
1736#endif
1737};
1738
1739static int amd8111e_probe_one(struct pci_dev *pdev,
1740 const struct pci_device_id *ent)
1741{
1742 int err, i;
1743 unsigned long reg_addr, reg_len;
1744 struct amd8111e_priv *lp;
1745 struct net_device *dev;
1746
1747 err = pci_enable_device(pdev);
1748 if (err) {
1749 dev_err(&pdev->dev, "Cannot enable new PCI device\n");
1750 return err;
1751 }
1752
1753 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1754 dev_err(&pdev->dev, "Cannot find PCI base address\n");
1755 err = -ENODEV;
1756 goto err_disable_pdev;
1757 }
1758
1759 err = pci_request_regions(pdev, MODULE_NAME);
1760 if (err) {
1761 dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
1762 goto err_disable_pdev;
1763 }
1764
1765 pci_set_master(pdev);
1766
1767 /* Find power-management capability. */
1768 if (!pdev->pm_cap) {
1769 dev_err(&pdev->dev, "No Power Management capability\n");
1770 err = -ENODEV;
1771 goto err_free_reg;
1772 }
1773
1774 /* Initialize DMA */
1775 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) < 0) {
1776 dev_err(&pdev->dev, "DMA not supported\n");
1777 err = -ENODEV;
1778 goto err_free_reg;
1779 }
1780
1781 reg_addr = pci_resource_start(pdev, 0);
1782 reg_len = pci_resource_len(pdev, 0);
1783
1784 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
1785 if (!dev) {
1786 err = -ENOMEM;
1787 goto err_free_reg;
1788 }
1789
1790 SET_NETDEV_DEV(dev, &pdev->dev);
1791
1792#if AMD8111E_VLAN_TAG_USED
1793 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
1794#endif
1795
1796 lp = netdev_priv(dev);
1797 lp->pci_dev = pdev;
1798 lp->amd8111e_net_dev = dev;
1799 lp->pm_cap = pdev->pm_cap;
1800
1801 spin_lock_init(&lp->lock);
1802
1803 lp->mmio = devm_ioremap(&pdev->dev, reg_addr, reg_len);
1804 if (!lp->mmio) {
1805 dev_err(&pdev->dev, "Cannot map device registers\n");
1806 err = -ENOMEM;
1807 goto err_free_dev;
1808 }
1809
1810 /* Initializing MAC address */
1811 for (i = 0; i < ETH_ALEN; i++)
1812 dev->dev_addr[i] = readb(lp->mmio + PADR + i);
1813
1814 /* Setting user defined parametrs */
1815 lp->ext_phy_option = speed_duplex[card_idx];
1816 if (coalesce[card_idx])
1817 lp->options |= OPTION_INTR_COAL_ENABLE;
1818 if (dynamic_ipg[card_idx++])
1819 lp->options |= OPTION_DYN_IPG_ENABLE;
1820
1821
1822 /* Initialize driver entry points */
1823 dev->netdev_ops = &amd8111e_netdev_ops;
1824 dev->ethtool_ops = &ops;
1825 dev->irq = pdev->irq;
1826 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
1827 dev->min_mtu = AMD8111E_MIN_MTU;
1828 dev->max_mtu = AMD8111E_MAX_MTU;
1829 netif_napi_add(dev, &lp->napi, amd8111e_rx_poll, 32);
1830
1831#if AMD8111E_VLAN_TAG_USED
1832 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
1833#endif
1834 /* Probe the external PHY */
1835 amd8111e_probe_ext_phy(dev);
1836
1837 /* setting mii default values */
1838 lp->mii_if.dev = dev;
1839 lp->mii_if.mdio_read = amd8111e_mdio_read;
1840 lp->mii_if.mdio_write = amd8111e_mdio_write;
1841 lp->mii_if.phy_id = lp->ext_phy_addr;
1842
1843 /* Set receive buffer length and set jumbo option*/
1844 amd8111e_set_rx_buff_len(dev);
1845
1846
1847 err = register_netdev(dev);
1848 if (err) {
1849 dev_err(&pdev->dev, "Cannot register net device\n");
1850 goto err_free_dev;
1851 }
1852
1853 pci_set_drvdata(pdev, dev);
1854
1855 /* Initialize software ipg timer */
1856 if (lp->options & OPTION_DYN_IPG_ENABLE) {
1857 timer_setup(&lp->ipg_data.ipg_timer, amd8111e_config_ipg, 0);
1858 lp->ipg_data.ipg_timer.expires = jiffies +
1859 IPG_CONVERGE_JIFFIES;
1860 lp->ipg_data.ipg = DEFAULT_IPG;
1861 lp->ipg_data.ipg_state = CSTATE;
1862 }
1863
1864 /* display driver and device information */
1865 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000) >> 28;
1866 dev_info(&pdev->dev, "[ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
1867 chip_version, dev->dev_addr);
1868 if (lp->ext_phy_id)
1869 dev_info(&pdev->dev, "Found MII PHY ID 0x%08x at address 0x%02x\n",
1870 lp->ext_phy_id, lp->ext_phy_addr);
1871 else
1872 dev_info(&pdev->dev, "Couldn't detect MII PHY, assuming address 0x01\n");
1873
1874 return 0;
1875
1876err_free_dev:
1877 free_netdev(dev);
1878
1879err_free_reg:
1880 pci_release_regions(pdev);
1881
1882err_disable_pdev:
1883 pci_disable_device(pdev);
1884 return err;
1885
1886}
1887
1888static void amd8111e_remove_one(struct pci_dev *pdev)
1889{
1890 struct net_device *dev = pci_get_drvdata(pdev);
1891
1892 if (dev) {
1893 unregister_netdev(dev);
1894 free_netdev(dev);
1895 pci_release_regions(pdev);
1896 pci_disable_device(pdev);
1897 }
1898}
1899
1900static const struct pci_device_id amd8111e_pci_tbl[] = {
1901 {
1902 .vendor = PCI_VENDOR_ID_AMD,
1903 .device = PCI_DEVICE_ID_AMD8111E_7462,
1904 },
1905 {
1906 .vendor = 0,
1907 }
1908};
1909MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
1910
1911static SIMPLE_DEV_PM_OPS(amd8111e_pm_ops, amd8111e_suspend, amd8111e_resume);
1912
1913static struct pci_driver amd8111e_driver = {
1914 .name = MODULE_NAME,
1915 .id_table = amd8111e_pci_tbl,
1916 .probe = amd8111e_probe_one,
1917 .remove = amd8111e_remove_one,
1918 .driver.pm = &amd8111e_pm_ops
1919};
1920
1921module_pci_driver(amd8111e_driver);