ia64/linux-2.6.18-xen.hg

view drivers/net/amd8111e.c @ 897:329ea0ccb344

balloon: try harder to balloon up under memory pressure.

Currently if the balloon driver is unable to increase the guest's
reservation it assumes the failure was due to reaching its full
allocation, gives up on the ballooning operation and records the limit
it reached as the "hard limit". The driver will not try again until
the target is set again (even to the same value).

However it is possible that ballooning has in fact failed due to
memory pressure in the host and therefore it is desirable to keep
attempting to reach the target in case memory becomes available. The
most likely scenario is that some guests are ballooning down while
others are ballooning up and therefore there is temporary memory
pressure while things stabilise. You would not expect a well behaved
toolstack to ask a domain to balloon to more than its allocation nor
would you expect it to deliberately over-commit memory by setting
balloon targets which exceed the total host memory.

This patch drops the concept of a hard limit and causes the balloon
driver to retry increasing the reservation on a timer in the same
manner as when decreasing the reservation.

Also if we partially succeed in increasing the reservation
(i.e. receive less pages than we asked for) then we may as well keep
those pages rather than returning them to Xen.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Fri Jun 05 14:01:20 2009 +0100 (2009-06-05)
parents 831230e53067
children
line source
2 /* Advanced Micro Devices Inc. AMD8111E Linux Network Driver
3 * Copyright (C) 2004 Advanced Micro Devices
4 *
5 *
6 * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ]
7 * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c]
8 * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ]
9 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
10 * Copyright 1993 United States Government as represented by the
11 * Director, National Security Agency.[ pcnet32.c ]
12 * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ]
13 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
14 *
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 * USA
31 Module Name:
33 amd8111e.c
35 Abstract:
37 AMD8111 based 10/100 Ethernet Controller Driver.
39 Environment:
41 Kernel Mode
43 Revision History:
44 3.0.0
45 Initial Revision.
46 3.0.1
47 1. Dynamic interrupt coalescing.
48 2. Removed prev_stats.
49 3. MII support.
50 4. Dynamic IPG support
51 3.0.2 05/29/2003
52 1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
53 2. Bug fix: Fixed VLAN support failure.
54 3. Bug fix: Fixed receive interrupt coalescing bug.
55 4. Dynamic IPG support is disabled by default.
56 3.0.3 06/05/2003
57 1. Bug fix: Fixed failure to close the interface if SMP is enabled.
58 3.0.4 12/09/2003
59 1. Added set_mac_address routine for bonding driver support.
60 2. Tested the driver for bonding support
61 3. Bug fix: Fixed mismach in actual receive buffer lenth and lenth
62 indicated to the h/w.
63 4. Modified amd8111e_rx() routine to receive all the received packets
64 in the first interrupt.
65 5. Bug fix: Corrected rx_errors reported in get_stats() function.
66 3.0.5 03/22/2004
67 1. Added NAPI support
69 */
72 #include <linux/module.h>
73 #include <linux/kernel.h>
74 #include <linux/types.h>
75 #include <linux/compiler.h>
76 #include <linux/slab.h>
77 #include <linux/delay.h>
78 #include <linux/init.h>
79 #include <linux/ioport.h>
80 #include <linux/pci.h>
81 #include <linux/netdevice.h>
82 #include <linux/etherdevice.h>
83 #include <linux/skbuff.h>
84 #include <linux/ethtool.h>
85 #include <linux/mii.h>
86 #include <linux/if_vlan.h>
87 #include <linux/ctype.h>
88 #include <linux/crc32.h>
89 #include <linux/dma-mapping.h>
91 #include <asm/system.h>
92 #include <asm/io.h>
93 #include <asm/byteorder.h>
94 #include <asm/uaccess.h>
96 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
97 #define AMD8111E_VLAN_TAG_USED 1
98 #else
99 #define AMD8111E_VLAN_TAG_USED 0
100 #endif
102 #include "amd8111e.h"
103 #define MODULE_NAME "amd8111e"
104 #define MODULE_VERS "3.0.5"
105 MODULE_AUTHOR("Advanced Micro Devices, Inc.");
106 MODULE_DESCRIPTION ("AMD8111 based 10/100 Ethernet Controller. Driver Version 3.0.3");
107 MODULE_LICENSE("GPL");
108 MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
109 module_param_array(speed_duplex, int, NULL, 0);
110 MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotitate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex");
111 module_param_array(coalesce, bool, NULL, 0);
112 MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
113 module_param_array(dynamic_ipg, bool, NULL, 0);
114 MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
116 static struct pci_device_id amd8111e_pci_tbl[] = {
118 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD8111E_7462,
119 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
120 { 0, }
122 };
123 /*
124 This function will read the PHY registers.
125 */
126 static int amd8111e_read_phy(struct amd8111e_priv* lp, int phy_id, int reg, u32* val)
127 {
128 void __iomem *mmio = lp->mmio;
129 unsigned int reg_val;
130 unsigned int repeat= REPEAT_CNT;
132 reg_val = readl(mmio + PHY_ACCESS);
133 while (reg_val & PHY_CMD_ACTIVE)
134 reg_val = readl( mmio + PHY_ACCESS );
136 writel( PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
137 ((reg & 0x1f) << 16), mmio +PHY_ACCESS);
138 do{
139 reg_val = readl(mmio + PHY_ACCESS);
140 udelay(30); /* It takes 30 us to read/write data */
141 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
142 if(reg_val & PHY_RD_ERR)
143 goto err_phy_read;
145 *val = reg_val & 0xffff;
146 return 0;
147 err_phy_read:
148 *val = 0;
149 return -EINVAL;
151 }
153 /*
154 This function will write into PHY registers.
155 */
156 static int amd8111e_write_phy(struct amd8111e_priv* lp,int phy_id, int reg, u32 val)
157 {
158 unsigned int repeat = REPEAT_CNT
159 void __iomem *mmio = lp->mmio;
160 unsigned int reg_val;
162 reg_val = readl(mmio + PHY_ACCESS);
163 while (reg_val & PHY_CMD_ACTIVE)
164 reg_val = readl( mmio + PHY_ACCESS );
166 writel( PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
167 ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
169 do{
170 reg_val = readl(mmio + PHY_ACCESS);
171 udelay(30); /* It takes 30 us to read/write the data */
172 } while (--repeat && (reg_val & PHY_CMD_ACTIVE));
174 if(reg_val & PHY_RD_ERR)
175 goto err_phy_write;
177 return 0;
179 err_phy_write:
180 return -EINVAL;
182 }
183 /*
184 This is the mii register read function provided to the mii interface.
185 */
186 static int amd8111e_mdio_read(struct net_device * dev, int phy_id, int reg_num)
187 {
188 struct amd8111e_priv* lp = netdev_priv(dev);
189 unsigned int reg_val;
191 amd8111e_read_phy(lp,phy_id,reg_num,&reg_val);
192 return reg_val;
194 }
196 /*
197 This is the mii register write function provided to the mii interface.
198 */
199 static void amd8111e_mdio_write(struct net_device * dev, int phy_id, int reg_num, int val)
200 {
201 struct amd8111e_priv* lp = netdev_priv(dev);
203 amd8111e_write_phy(lp, phy_id, reg_num, val);
204 }
206 /*
207 This function will set PHY speed. During initialization sets the original speed to 100 full.
208 */
209 static void amd8111e_set_ext_phy(struct net_device *dev)
210 {
211 struct amd8111e_priv *lp = netdev_priv(dev);
212 u32 bmcr,advert,tmp;
214 /* Determine mii register values to set the speed */
215 advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
216 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
217 switch (lp->ext_phy_option){
219 default:
220 case SPEED_AUTONEG: /* advertise all values */
221 tmp |= ( ADVERTISE_10HALF|ADVERTISE_10FULL|
222 ADVERTISE_100HALF|ADVERTISE_100FULL) ;
223 break;
224 case SPEED10_HALF:
225 tmp |= ADVERTISE_10HALF;
226 break;
227 case SPEED10_FULL:
228 tmp |= ADVERTISE_10FULL;
229 break;
230 case SPEED100_HALF:
231 tmp |= ADVERTISE_100HALF;
232 break;
233 case SPEED100_FULL:
234 tmp |= ADVERTISE_100FULL;
235 break;
236 }
238 if(advert != tmp)
239 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
240 /* Restart auto negotiation */
241 bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
242 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
243 amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
245 }
247 /*
248 This function will unmap skb->data space and will free
249 all transmit and receive skbuffs.
250 */
251 static int amd8111e_free_skbs(struct net_device *dev)
252 {
253 struct amd8111e_priv *lp = netdev_priv(dev);
254 struct sk_buff* rx_skbuff;
255 int i;
257 /* Freeing transmit skbs */
258 for(i = 0; i < NUM_TX_BUFFERS; i++){
259 if(lp->tx_skbuff[i]){
260 pci_unmap_single(lp->pci_dev,lp->tx_dma_addr[i], lp->tx_skbuff[i]->len,PCI_DMA_TODEVICE);
261 dev_kfree_skb (lp->tx_skbuff[i]);
262 lp->tx_skbuff[i] = NULL;
263 lp->tx_dma_addr[i] = 0;
264 }
265 }
266 /* Freeing previously allocated receive buffers */
267 for (i = 0; i < NUM_RX_BUFFERS; i++){
268 rx_skbuff = lp->rx_skbuff[i];
269 if(rx_skbuff != NULL){
270 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[i],
271 lp->rx_buff_len - 2,PCI_DMA_FROMDEVICE);
272 dev_kfree_skb(lp->rx_skbuff[i]);
273 lp->rx_skbuff[i] = NULL;
274 lp->rx_dma_addr[i] = 0;
275 }
276 }
278 return 0;
279 }
281 /*
282 This will set the receive buffer length corresponding to the mtu size of networkinterface.
283 */
284 static inline void amd8111e_set_rx_buff_len(struct net_device* dev)
285 {
286 struct amd8111e_priv* lp = netdev_priv(dev);
287 unsigned int mtu = dev->mtu;
289 if (mtu > ETH_DATA_LEN){
290 /* MTU + ethernet header + FCS
291 + optional VLAN tag + skb reserve space 2 */
293 lp->rx_buff_len = mtu + ETH_HLEN + 10;
294 lp->options |= OPTION_JUMBO_ENABLE;
295 } else{
296 lp->rx_buff_len = PKT_BUFF_SZ;
297 lp->options &= ~OPTION_JUMBO_ENABLE;
298 }
299 }
301 /*
302 This function will free all the previously allocated buffers, determine new receive buffer length and will allocate new receive buffers. This function also allocates and initializes both the transmitter and receive hardware descriptors.
303 */
304 static int amd8111e_init_ring(struct net_device *dev)
305 {
306 struct amd8111e_priv *lp = netdev_priv(dev);
307 int i;
309 lp->rx_idx = lp->tx_idx = 0;
310 lp->tx_complete_idx = 0;
311 lp->tx_ring_idx = 0;
314 if(lp->opened)
315 /* Free previously allocated transmit and receive skbs */
316 amd8111e_free_skbs(dev);
318 else{
319 /* allocate the tx and rx descriptors */
320 if((lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
321 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
322 &lp->tx_ring_dma_addr)) == NULL)
324 goto err_no_mem;
326 if((lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
327 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
328 &lp->rx_ring_dma_addr)) == NULL)
330 goto err_free_tx_ring;
332 }
333 /* Set new receive buff size */
334 amd8111e_set_rx_buff_len(dev);
336 /* Allocating receive skbs */
337 for (i = 0; i < NUM_RX_BUFFERS; i++) {
339 if (!(lp->rx_skbuff[i] = dev_alloc_skb(lp->rx_buff_len))) {
340 /* Release previos allocated skbs */
341 for(--i; i >= 0 ;i--)
342 dev_kfree_skb(lp->rx_skbuff[i]);
343 goto err_free_rx_ring;
344 }
345 skb_reserve(lp->rx_skbuff[i],2);
346 }
347 /* Initilaizing receive descriptors */
348 for (i = 0; i < NUM_RX_BUFFERS; i++) {
349 lp->rx_dma_addr[i] = pci_map_single(lp->pci_dev,
350 lp->rx_skbuff[i]->data,lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
352 lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
353 lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
354 wmb();
355 lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
356 }
358 /* Initializing transmit descriptors */
359 for (i = 0; i < NUM_TX_RING_DR; i++) {
360 lp->tx_ring[i].buff_phy_addr = 0;
361 lp->tx_ring[i].tx_flags = 0;
362 lp->tx_ring[i].buff_count = 0;
363 }
365 return 0;
367 err_free_rx_ring:
369 pci_free_consistent(lp->pci_dev,
370 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,lp->rx_ring,
371 lp->rx_ring_dma_addr);
373 err_free_tx_ring:
375 pci_free_consistent(lp->pci_dev,
376 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,lp->tx_ring,
377 lp->tx_ring_dma_addr);
379 err_no_mem:
380 return -ENOMEM;
381 }
382 /* This function will set the interrupt coalescing according to the input arguments */
383 static int amd8111e_set_coalesce(struct net_device * dev, enum coal_mode cmod)
384 {
385 unsigned int timeout;
386 unsigned int event_count;
388 struct amd8111e_priv *lp = netdev_priv(dev);
389 void __iomem *mmio = lp->mmio;
390 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
393 switch(cmod)
394 {
395 case RX_INTR_COAL :
396 timeout = coal_conf->rx_timeout;
397 event_count = coal_conf->rx_event_count;
398 if( timeout > MAX_TIMEOUT ||
399 event_count > MAX_EVENT_COUNT )
400 return -EINVAL;
402 timeout = timeout * DELAY_TIMER_CONV;
403 writel(VAL0|STINTEN, mmio+INTEN0);
404 writel((u32)DLY_INT_A_R0|( event_count<< 16 )|timeout,
405 mmio+DLY_INT_A);
406 break;
408 case TX_INTR_COAL :
409 timeout = coal_conf->tx_timeout;
410 event_count = coal_conf->tx_event_count;
411 if( timeout > MAX_TIMEOUT ||
412 event_count > MAX_EVENT_COUNT )
413 return -EINVAL;
416 timeout = timeout * DELAY_TIMER_CONV;
417 writel(VAL0|STINTEN,mmio+INTEN0);
418 writel((u32)DLY_INT_B_T0|( event_count<< 16 )|timeout,
419 mmio+DLY_INT_B);
420 break;
422 case DISABLE_COAL:
423 writel(0,mmio+STVAL);
424 writel(STINTEN, mmio+INTEN0);
425 writel(0, mmio +DLY_INT_B);
426 writel(0, mmio+DLY_INT_A);
427 break;
428 case ENABLE_COAL:
429 /* Start the timer */
430 writel((u32)SOFT_TIMER_FREQ, mmio+STVAL); /* 0.5 sec */
431 writel(VAL0|STINTEN, mmio+INTEN0);
432 break;
433 default:
434 break;
436 }
437 return 0;
439 }
441 /*
442 This function initializes the device registers and starts the device.
443 */
444 static int amd8111e_restart(struct net_device *dev)
445 {
446 struct amd8111e_priv *lp = netdev_priv(dev);
447 void __iomem *mmio = lp->mmio;
448 int i,reg_val;
450 /* stop the chip */
451 writel(RUN, mmio + CMD0);
453 if(amd8111e_init_ring(dev))
454 return -ENOMEM;
456 /* enable the port manager and set auto negotiation always */
457 writel((u32) VAL1|EN_PMGR, mmio + CMD3 );
458 writel((u32)XPHYANE|XPHYRST , mmio + CTRL2);
460 amd8111e_set_ext_phy(dev);
462 /* set control registers */
463 reg_val = readl(mmio + CTRL1);
464 reg_val &= ~XMTSP_MASK;
465 writel( reg_val| XMTSP_128 | CACHE_ALIGN, mmio + CTRL1 );
467 /* enable interrupt */
468 writel( APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
469 APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
470 SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
472 writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
474 /* initialize tx and rx ring base addresses */
475 writel((u32)lp->tx_ring_dma_addr,mmio + XMT_RING_BASE_ADDR0);
476 writel((u32)lp->rx_ring_dma_addr,mmio+ RCV_RING_BASE_ADDR0);
478 writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
479 writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
481 /* set default IPG to 96 */
482 writew((u32)DEFAULT_IPG,mmio+IPG);
483 writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
485 if(lp->options & OPTION_JUMBO_ENABLE){
486 writel((u32)VAL2|JUMBO, mmio + CMD3);
487 /* Reset REX_UFLO */
488 writel( REX_UFLO, mmio + CMD2);
489 /* Should not set REX_UFLO for jumbo frames */
490 writel( VAL0 | APAD_XMT|REX_RTRY , mmio + CMD2);
491 }else{
492 writel( VAL0 | APAD_XMT | REX_RTRY|REX_UFLO, mmio + CMD2);
493 writel((u32)JUMBO, mmio + CMD3);
494 }
496 #if AMD8111E_VLAN_TAG_USED
497 writel((u32) VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3);
498 #endif
499 writel( VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2 );
501 /* Setting the MAC address to the device */
502 for(i = 0; i < ETH_ADDR_LEN; i++)
503 writeb( dev->dev_addr[i], mmio + PADR + i );
505 /* Enable interrupt coalesce */
506 if(lp->options & OPTION_INTR_COAL_ENABLE){
507 printk(KERN_INFO "%s: Interrupt Coalescing Enabled.\n",
508 dev->name);
509 amd8111e_set_coalesce(dev,ENABLE_COAL);
510 }
512 /* set RUN bit to start the chip */
513 writel(VAL2 | RDMD0, mmio + CMD0);
514 writel(VAL0 | INTREN | RUN, mmio + CMD0);
516 /* To avoid PCI posting bug */
517 readl(mmio+CMD0);
518 return 0;
519 }
520 /*
521 This function clears necessary the device registers.
522 */
523 static void amd8111e_init_hw_default( struct amd8111e_priv* lp)
524 {
525 unsigned int reg_val;
526 unsigned int logic_filter[2] ={0,};
527 void __iomem *mmio = lp->mmio;
530 /* stop the chip */
531 writel(RUN, mmio + CMD0);
533 /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
534 writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
536 /* Clear RCV_RING_BASE_ADDR */
537 writel(0, mmio + RCV_RING_BASE_ADDR0);
539 /* Clear XMT_RING_BASE_ADDR */
540 writel(0, mmio + XMT_RING_BASE_ADDR0);
541 writel(0, mmio + XMT_RING_BASE_ADDR1);
542 writel(0, mmio + XMT_RING_BASE_ADDR2);
543 writel(0, mmio + XMT_RING_BASE_ADDR3);
545 /* Clear CMD0 */
546 writel(CMD0_CLEAR,mmio + CMD0);
548 /* Clear CMD2 */
549 writel(CMD2_CLEAR, mmio +CMD2);
551 /* Clear CMD7 */
552 writel(CMD7_CLEAR , mmio + CMD7);
554 /* Clear DLY_INT_A and DLY_INT_B */
555 writel(0x0, mmio + DLY_INT_A);
556 writel(0x0, mmio + DLY_INT_B);
558 /* Clear FLOW_CONTROL */
559 writel(0x0, mmio + FLOW_CONTROL);
561 /* Clear INT0 write 1 to clear register */
562 reg_val = readl(mmio + INT0);
563 writel(reg_val, mmio + INT0);
565 /* Clear STVAL */
566 writel(0x0, mmio + STVAL);
568 /* Clear INTEN0 */
569 writel( INTEN0_CLEAR, mmio + INTEN0);
571 /* Clear LADRF */
572 writel(0x0 , mmio + LADRF);
574 /* Set SRAM_SIZE & SRAM_BOUNDARY registers */
575 writel( 0x80010,mmio + SRAM_SIZE);
577 /* Clear RCV_RING0_LEN */
578 writel(0x0, mmio + RCV_RING_LEN0);
580 /* Clear XMT_RING0/1/2/3_LEN */
581 writel(0x0, mmio + XMT_RING_LEN0);
582 writel(0x0, mmio + XMT_RING_LEN1);
583 writel(0x0, mmio + XMT_RING_LEN2);
584 writel(0x0, mmio + XMT_RING_LEN3);
586 /* Clear XMT_RING_LIMIT */
587 writel(0x0, mmio + XMT_RING_LIMIT);
589 /* Clear MIB */
590 writew(MIB_CLEAR, mmio + MIB_ADDR);
592 /* Clear LARF */
593 amd8111e_writeq(*(u64*)logic_filter,mmio+LADRF);
595 /* SRAM_SIZE register */
596 reg_val = readl(mmio + SRAM_SIZE);
598 if(lp->options & OPTION_JUMBO_ENABLE)
599 writel( VAL2|JUMBO, mmio + CMD3);
600 #if AMD8111E_VLAN_TAG_USED
601 writel(VAL2|VSIZE|VL_TAG_DEL, mmio + CMD3 );
602 #endif
603 /* Set default value to CTRL1 Register */
604 writel(CTRL1_DEFAULT, mmio + CTRL1);
606 /* To avoid PCI posting bug */
607 readl(mmio + CMD2);
609 }
611 /*
612 This function disables the interrupt and clears all the pending
613 interrupts in INT0
614 */
615 static void amd8111e_disable_interrupt(struct amd8111e_priv* lp)
616 {
617 u32 intr0;
619 /* Disable interrupt */
620 writel(INTREN, lp->mmio + CMD0);
622 /* Clear INT0 */
623 intr0 = readl(lp->mmio + INT0);
624 writel(intr0, lp->mmio + INT0);
626 /* To avoid PCI posting bug */
627 readl(lp->mmio + INT0);
629 }
631 /*
632 This function stops the chip.
633 */
634 static void amd8111e_stop_chip(struct amd8111e_priv* lp)
635 {
636 writel(RUN, lp->mmio + CMD0);
638 /* To avoid PCI posting bug */
639 readl(lp->mmio + CMD0);
640 }
642 /*
643 This function frees the transmiter and receiver descriptor rings.
644 */
645 static void amd8111e_free_ring(struct amd8111e_priv* lp)
646 {
648 /* Free transmit and receive skbs */
649 amd8111e_free_skbs(lp->amd8111e_net_dev);
651 /* Free transmit and receive descriptor rings */
652 if(lp->rx_ring){
653 pci_free_consistent(lp->pci_dev,
654 sizeof(struct amd8111e_rx_dr)*NUM_RX_RING_DR,
655 lp->rx_ring, lp->rx_ring_dma_addr);
656 lp->rx_ring = NULL;
657 }
659 if(lp->tx_ring){
660 pci_free_consistent(lp->pci_dev,
661 sizeof(struct amd8111e_tx_dr)*NUM_TX_RING_DR,
662 lp->tx_ring, lp->tx_ring_dma_addr);
664 lp->tx_ring = NULL;
665 }
667 }
668 #if AMD8111E_VLAN_TAG_USED
669 /*
670 This is the receive indication function for packets with vlan tag.
671 */
672 static int amd8111e_vlan_rx(struct amd8111e_priv *lp, struct sk_buff *skb, u16 vlan_tag)
673 {
674 #ifdef CONFIG_AMD8111E_NAPI
675 return vlan_hwaccel_receive_skb(skb, lp->vlgrp,vlan_tag);
676 #else
677 return vlan_hwaccel_rx(skb, lp->vlgrp, vlan_tag);
678 #endif /* CONFIG_AMD8111E_NAPI */
679 }
680 #endif
682 /*
683 This function will free all the transmit skbs that are actually transmitted by the device. It will check the ownership of the skb before freeing the skb.
684 */
685 static int amd8111e_tx(struct net_device *dev)
686 {
687 struct amd8111e_priv* lp = netdev_priv(dev);
688 int tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
689 int status;
690 /* Complete all the transmit packet */
691 while (lp->tx_complete_idx != lp->tx_idx){
692 tx_index = lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
693 status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
695 if(status & OWN_BIT)
696 break; /* It still hasn't been Txed */
698 lp->tx_ring[tx_index].buff_phy_addr = 0;
700 /* We must free the original skb */
701 if (lp->tx_skbuff[tx_index]) {
702 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[tx_index],
703 lp->tx_skbuff[tx_index]->len,
704 PCI_DMA_TODEVICE);
705 dev_kfree_skb_irq (lp->tx_skbuff[tx_index]);
706 lp->tx_skbuff[tx_index] = NULL;
707 lp->tx_dma_addr[tx_index] = 0;
708 }
709 lp->tx_complete_idx++;
710 /*COAL update tx coalescing parameters */
711 lp->coal_conf.tx_packets++;
712 lp->coal_conf.tx_bytes += lp->tx_ring[tx_index].buff_count;
714 if (netif_queue_stopped(dev) &&
715 lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS +2){
716 /* The ring is no longer full, clear tbusy. */
717 /* lp->tx_full = 0; */
718 netif_wake_queue (dev);
719 }
720 }
721 return 0;
722 }
724 #ifdef CONFIG_AMD8111E_NAPI
725 /* This function handles the driver receive operation in polling mode */
726 static int amd8111e_rx_poll(struct net_device *dev, int * budget)
727 {
728 struct amd8111e_priv *lp = netdev_priv(dev);
729 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
730 void __iomem *mmio = lp->mmio;
731 struct sk_buff *skb,*new_skb;
732 int min_pkt_len, status;
733 unsigned int intr0;
734 int num_rx_pkt = 0;
735 /*int max_rx_pkt = NUM_RX_BUFFERS;*/
736 short pkt_len;
737 #if AMD8111E_VLAN_TAG_USED
738 short vtag;
739 #endif
740 int rx_pkt_limit = dev->quota;
741 unsigned long flags;
743 do{
744 /* process receive packets until we use the quota*/
745 /* If we own the next entry, it's a new packet. Send it up. */
746 while(1) {
747 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
748 if (status & OWN_BIT)
749 break;
751 /*
752 * There is a tricky error noted by John Murphy,
753 * <murf@perftech.com> to Russ Nelson: Even with
754 * full-sized * buffers it's possible for a
755 * jabber packet to use two buffers, with only
756 * the last correctly noting the error.
757 */
759 if(status & ERR_BIT) {
760 /* reseting flags */
761 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
762 goto err_next_pkt;
763 }
764 /* check for STP and ENP */
765 if(!((status & STP_BIT) && (status & ENP_BIT))){
766 /* reseting flags */
767 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
768 goto err_next_pkt;
769 }
770 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
772 #if AMD8111E_VLAN_TAG_USED
773 vtag = status & TT_MASK;
774 /*MAC will strip vlan tag*/
775 if(lp->vlgrp != NULL && vtag !=0)
776 min_pkt_len =MIN_PKT_LEN - 4;
777 else
778 #endif
779 min_pkt_len =MIN_PKT_LEN;
781 if (pkt_len < min_pkt_len) {
782 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
783 lp->drv_rx_errors++;
784 goto err_next_pkt;
785 }
786 if(--rx_pkt_limit < 0)
787 goto rx_not_empty;
788 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
789 /* if allocation fail,
790 ignore that pkt and go to next one */
791 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
792 lp->drv_rx_errors++;
793 goto err_next_pkt;
794 }
796 skb_reserve(new_skb, 2);
797 skb = lp->rx_skbuff[rx_index];
798 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
799 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
800 skb_put(skb, pkt_len);
801 skb->dev = dev;
802 lp->rx_skbuff[rx_index] = new_skb;
803 new_skb->dev = dev;
804 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
805 new_skb->data,
806 lp->rx_buff_len-2,
807 PCI_DMA_FROMDEVICE);
809 skb->protocol = eth_type_trans(skb, dev);
811 #if AMD8111E_VLAN_TAG_USED
812 if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
813 amd8111e_vlan_rx(lp, skb,
814 le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
815 } else
816 #endif
817 netif_receive_skb(skb);
818 /*COAL update rx coalescing parameters*/
819 lp->coal_conf.rx_packets++;
820 lp->coal_conf.rx_bytes += pkt_len;
821 num_rx_pkt++;
822 dev->last_rx = jiffies;
824 err_next_pkt:
825 lp->rx_ring[rx_index].buff_phy_addr
826 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
827 lp->rx_ring[rx_index].buff_count =
828 cpu_to_le16(lp->rx_buff_len-2);
829 wmb();
830 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
831 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
832 }
833 /* Check the interrupt status register for more packets in the
834 mean time. Process them since we have not used up our quota.*/
836 intr0 = readl(mmio + INT0);
837 /*Ack receive packets */
838 writel(intr0 & RINT0,mmio + INT0);
840 } while(intr0 & RINT0);
842 /* Receive descriptor is empty now */
843 dev->quota -= num_rx_pkt;
844 *budget -= num_rx_pkt;
846 spin_lock_irqsave(&lp->lock, flags);
847 netif_rx_complete(dev);
848 writel(VAL0|RINTEN0, mmio + INTEN0);
849 writel(VAL2 | RDMD0, mmio + CMD0);
850 spin_unlock_irqrestore(&lp->lock, flags);
851 return 0;
853 rx_not_empty:
854 /* Do not call a netif_rx_complete */
855 dev->quota -= num_rx_pkt;
856 *budget -= num_rx_pkt;
857 return 1;
858 }
860 #else
861 /*
862 This function will check the ownership of receive buffers and descriptors. It will indicate to kernel up to half the number of maximum receive buffers in the descriptor ring, in a single receive interrupt. It will also replenish the descriptors with new skbs.
863 */
864 static int amd8111e_rx(struct net_device *dev)
865 {
866 struct amd8111e_priv *lp = netdev_priv(dev);
867 struct sk_buff *skb,*new_skb;
868 int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
869 int min_pkt_len, status;
870 int num_rx_pkt = 0;
871 int max_rx_pkt = NUM_RX_BUFFERS;
872 short pkt_len;
873 #if AMD8111E_VLAN_TAG_USED
874 short vtag;
875 #endif
877 /* If we own the next entry, it's a new packet. Send it up. */
878 while(++num_rx_pkt <= max_rx_pkt){
879 status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
880 if(status & OWN_BIT)
881 return 0;
883 /* check if err summary bit is set */
884 if(status & ERR_BIT){
885 /*
886 * There is a tricky error noted by John Murphy,
887 * <murf@perftech.com> to Russ Nelson: Even with full-sized
888 * buffers it's possible for a jabber packet to use two
889 * buffers, with only the last correctly noting the error. */
890 /* reseting flags */
891 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
892 goto err_next_pkt;
893 }
894 /* check for STP and ENP */
895 if(!((status & STP_BIT) && (status & ENP_BIT))){
896 /* reseting flags */
897 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
898 goto err_next_pkt;
899 }
900 pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
902 #if AMD8111E_VLAN_TAG_USED
903 vtag = status & TT_MASK;
904 /*MAC will strip vlan tag*/
905 if(lp->vlgrp != NULL && vtag !=0)
906 min_pkt_len =MIN_PKT_LEN - 4;
907 else
908 #endif
909 min_pkt_len =MIN_PKT_LEN;
911 if (pkt_len < min_pkt_len) {
912 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
913 lp->drv_rx_errors++;
914 goto err_next_pkt;
915 }
916 if(!(new_skb = dev_alloc_skb(lp->rx_buff_len))){
917 /* if allocation fail,
918 ignore that pkt and go to next one */
919 lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
920 lp->drv_rx_errors++;
921 goto err_next_pkt;
922 }
924 skb_reserve(new_skb, 2);
925 skb = lp->rx_skbuff[rx_index];
926 pci_unmap_single(lp->pci_dev,lp->rx_dma_addr[rx_index],
927 lp->rx_buff_len-2, PCI_DMA_FROMDEVICE);
928 skb_put(skb, pkt_len);
929 skb->dev = dev;
930 lp->rx_skbuff[rx_index] = new_skb;
931 new_skb->dev = dev;
932 lp->rx_dma_addr[rx_index] = pci_map_single(lp->pci_dev,
933 new_skb->data, lp->rx_buff_len-2,PCI_DMA_FROMDEVICE);
935 skb->protocol = eth_type_trans(skb, dev);
937 #if AMD8111E_VLAN_TAG_USED
938 if(lp->vlgrp != NULL && (vtag == TT_VLAN_TAGGED)){
939 amd8111e_vlan_rx(lp, skb,
940 le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info));
941 } else
942 #endif
944 netif_rx (skb);
945 /*COAL update rx coalescing parameters*/
946 lp->coal_conf.rx_packets++;
947 lp->coal_conf.rx_bytes += pkt_len;
949 dev->last_rx = jiffies;
951 err_next_pkt:
952 lp->rx_ring[rx_index].buff_phy_addr
953 = cpu_to_le32(lp->rx_dma_addr[rx_index]);
954 lp->rx_ring[rx_index].buff_count =
955 cpu_to_le16(lp->rx_buff_len-2);
956 wmb();
957 lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
958 rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
959 }
961 return 0;
962 }
963 #endif /* CONFIG_AMD8111E_NAPI */
964 /*
965 This function will indicate the link status to the kernel.
966 */
967 static int amd8111e_link_change(struct net_device* dev)
968 {
969 struct amd8111e_priv *lp = netdev_priv(dev);
970 int status0,speed;
972 /* read the link change */
973 status0 = readl(lp->mmio + STAT0);
975 if(status0 & LINK_STATS){
976 if(status0 & AUTONEG_COMPLETE)
977 lp->link_config.autoneg = AUTONEG_ENABLE;
978 else
979 lp->link_config.autoneg = AUTONEG_DISABLE;
981 if(status0 & FULL_DPLX)
982 lp->link_config.duplex = DUPLEX_FULL;
983 else
984 lp->link_config.duplex = DUPLEX_HALF;
985 speed = (status0 & SPEED_MASK) >> 7;
986 if(speed == PHY_SPEED_10)
987 lp->link_config.speed = SPEED_10;
988 else if(speed == PHY_SPEED_100)
989 lp->link_config.speed = SPEED_100;
991 printk(KERN_INFO "%s: Link is Up. Speed is %s Mbps %s Duplex\n", dev->name,
992 (lp->link_config.speed == SPEED_100) ? "100": "10",
993 (lp->link_config.duplex == DUPLEX_FULL)? "Full": "Half");
994 netif_carrier_on(dev);
995 }
996 else{
997 lp->link_config.speed = SPEED_INVALID;
998 lp->link_config.duplex = DUPLEX_INVALID;
999 lp->link_config.autoneg = AUTONEG_INVALID;
1000 printk(KERN_INFO "%s: Link is Down.\n",dev->name);
1001 netif_carrier_off(dev);
1004 return 0;
1006 /*
1007 This function reads the mib counters.
1008 */
1009 static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
1011 unsigned int status;
1012 unsigned int data;
1013 unsigned int repeat = REPEAT_CNT;
1015 writew( MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
1016 do {
1017 status = readw(mmio + MIB_ADDR);
1018 udelay(2); /* controller takes MAX 2 us to get mib data */
1020 while (--repeat && (status & MIB_CMD_ACTIVE));
1022 data = readl(mmio + MIB_DATA);
1023 return data;
1026 /*
1027 This function reads the mib registers and returns the hardware statistics. It updates previous internal driver statistics with new values.
1028 */
1029 static struct net_device_stats *amd8111e_get_stats(struct net_device * dev)
1031 struct amd8111e_priv *lp = netdev_priv(dev);
1032 void __iomem *mmio = lp->mmio;
1033 unsigned long flags;
1034 /* struct net_device_stats *prev_stats = &lp->prev_stats; */
1035 struct net_device_stats* new_stats = &lp->stats;
1037 if(!lp->opened)
1038 return &lp->stats;
1039 spin_lock_irqsave (&lp->lock, flags);
1041 /* stats.rx_packets */
1042 new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
1043 amd8111e_read_mib(mmio, rcv_multicast_pkts)+
1044 amd8111e_read_mib(mmio, rcv_unicast_pkts);
1046 /* stats.tx_packets */
1047 new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
1049 /*stats.rx_bytes */
1050 new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
1052 /* stats.tx_bytes */
1053 new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
1055 /* stats.rx_errors */
1056 /* hw errors + errors driver reported */
1057 new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
1058 amd8111e_read_mib(mmio, rcv_fragments)+
1059 amd8111e_read_mib(mmio, rcv_jabbers)+
1060 amd8111e_read_mib(mmio, rcv_alignment_errors)+
1061 amd8111e_read_mib(mmio, rcv_fcs_errors)+
1062 amd8111e_read_mib(mmio, rcv_miss_pkts)+
1063 lp->drv_rx_errors;
1065 /* stats.tx_errors */
1066 new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1068 /* stats.rx_dropped*/
1069 new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
1071 /* stats.tx_dropped*/
1072 new_stats->tx_dropped = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1074 /* stats.multicast*/
1075 new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
1077 /* stats.collisions*/
1078 new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
1080 /* stats.rx_length_errors*/
1081 new_stats->rx_length_errors =
1082 amd8111e_read_mib(mmio, rcv_undersize_pkts)+
1083 amd8111e_read_mib(mmio, rcv_oversize_pkts);
1085 /* stats.rx_over_errors*/
1086 new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1088 /* stats.rx_crc_errors*/
1089 new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
1091 /* stats.rx_frame_errors*/
1092 new_stats->rx_frame_errors =
1093 amd8111e_read_mib(mmio, rcv_alignment_errors);
1095 /* stats.rx_fifo_errors */
1096 new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1098 /* stats.rx_missed_errors */
1099 new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
1101 /* stats.tx_aborted_errors*/
1102 new_stats->tx_aborted_errors =
1103 amd8111e_read_mib(mmio, xmt_excessive_collision);
1105 /* stats.tx_carrier_errors*/
1106 new_stats->tx_carrier_errors =
1107 amd8111e_read_mib(mmio, xmt_loss_carrier);
1109 /* stats.tx_fifo_errors*/
1110 new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
1112 /* stats.tx_window_errors*/
1113 new_stats->tx_window_errors =
1114 amd8111e_read_mib(mmio, xmt_late_collision);
1116 /* Reset the mibs for collecting new statistics */
1117 /* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
1119 spin_unlock_irqrestore (&lp->lock, flags);
1121 return new_stats;
1123 /* This function recalculate the interupt coalescing mode on every interrupt
1124 according to the datarate and the packet rate.
1125 */
1126 static int amd8111e_calc_coalesce(struct net_device *dev)
1128 struct amd8111e_priv *lp = netdev_priv(dev);
1129 struct amd8111e_coalesce_conf * coal_conf = &lp->coal_conf;
1130 int tx_pkt_rate;
1131 int rx_pkt_rate;
1132 int tx_data_rate;
1133 int rx_data_rate;
1134 int rx_pkt_size;
1135 int tx_pkt_size;
1137 tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
1138 coal_conf->tx_prev_packets = coal_conf->tx_packets;
1140 tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
1141 coal_conf->tx_prev_bytes = coal_conf->tx_bytes;
1143 rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
1144 coal_conf->rx_prev_packets = coal_conf->rx_packets;
1146 rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
1147 coal_conf->rx_prev_bytes = coal_conf->rx_bytes;
1149 if(rx_pkt_rate < 800){
1150 if(coal_conf->rx_coal_type != NO_COALESCE){
1152 coal_conf->rx_timeout = 0x0;
1153 coal_conf->rx_event_count = 0;
1154 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1155 coal_conf->rx_coal_type = NO_COALESCE;
1158 else{
1160 rx_pkt_size = rx_data_rate/rx_pkt_rate;
1161 if (rx_pkt_size < 128){
1162 if(coal_conf->rx_coal_type != NO_COALESCE){
1164 coal_conf->rx_timeout = 0;
1165 coal_conf->rx_event_count = 0;
1166 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1167 coal_conf->rx_coal_type = NO_COALESCE;
1171 else if ( (rx_pkt_size >= 128) && (rx_pkt_size < 512) ){
1173 if(coal_conf->rx_coal_type != LOW_COALESCE){
1174 coal_conf->rx_timeout = 1;
1175 coal_conf->rx_event_count = 4;
1176 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1177 coal_conf->rx_coal_type = LOW_COALESCE;
1180 else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)){
1182 if(coal_conf->rx_coal_type != MEDIUM_COALESCE){
1183 coal_conf->rx_timeout = 1;
1184 coal_conf->rx_event_count = 4;
1185 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1186 coal_conf->rx_coal_type = MEDIUM_COALESCE;
1190 else if(rx_pkt_size >= 1024){
1191 if(coal_conf->rx_coal_type != HIGH_COALESCE){
1192 coal_conf->rx_timeout = 2;
1193 coal_conf->rx_event_count = 3;
1194 amd8111e_set_coalesce(dev,RX_INTR_COAL);
1195 coal_conf->rx_coal_type = HIGH_COALESCE;
1199 /* NOW FOR TX INTR COALESC */
1200 if(tx_pkt_rate < 800){
1201 if(coal_conf->tx_coal_type != NO_COALESCE){
1203 coal_conf->tx_timeout = 0x0;
1204 coal_conf->tx_event_count = 0;
1205 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1206 coal_conf->tx_coal_type = NO_COALESCE;
1209 else{
1211 tx_pkt_size = tx_data_rate/tx_pkt_rate;
1212 if (tx_pkt_size < 128){
1214 if(coal_conf->tx_coal_type != NO_COALESCE){
1216 coal_conf->tx_timeout = 0;
1217 coal_conf->tx_event_count = 0;
1218 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1219 coal_conf->tx_coal_type = NO_COALESCE;
1223 else if ( (tx_pkt_size >= 128) && (tx_pkt_size < 512) ){
1225 if(coal_conf->tx_coal_type != LOW_COALESCE){
1226 coal_conf->tx_timeout = 1;
1227 coal_conf->tx_event_count = 2;
1228 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1229 coal_conf->tx_coal_type = LOW_COALESCE;
1233 else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)){
1235 if(coal_conf->tx_coal_type != MEDIUM_COALESCE){
1236 coal_conf->tx_timeout = 2;
1237 coal_conf->tx_event_count = 5;
1238 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1239 coal_conf->tx_coal_type = MEDIUM_COALESCE;
1243 else if(tx_pkt_size >= 1024){
1244 if (tx_pkt_size >= 1024){
1245 if(coal_conf->tx_coal_type != HIGH_COALESCE){
1246 coal_conf->tx_timeout = 4;
1247 coal_conf->tx_event_count = 8;
1248 amd8111e_set_coalesce(dev,TX_INTR_COAL);
1249 coal_conf->tx_coal_type = HIGH_COALESCE;
1254 return 0;
1257 /*
1258 This is device interrupt function. It handles transmit, receive,link change and hardware timer interrupts.
1259 */
1260 static irqreturn_t amd8111e_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1263 struct net_device * dev = (struct net_device *) dev_id;
1264 struct amd8111e_priv *lp = netdev_priv(dev);
1265 void __iomem *mmio = lp->mmio;
1266 unsigned int intr0, intren0;
1267 unsigned int handled = 1;
1269 if(unlikely(dev == NULL))
1270 return IRQ_NONE;
1272 spin_lock(&lp->lock);
1274 /* disabling interrupt */
1275 writel(INTREN, mmio + CMD0);
1277 /* Read interrupt status */
1278 intr0 = readl(mmio + INT0);
1279 intren0 = readl(mmio + INTEN0);
1281 /* Process all the INT event until INTR bit is clear. */
1283 if (!(intr0 & INTR)){
1284 handled = 0;
1285 goto err_no_interrupt;
1288 /* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
1289 writel(intr0, mmio + INT0);
1291 /* Check if Receive Interrupt has occurred. */
1292 #ifdef CONFIG_AMD8111E_NAPI
1293 if(intr0 & RINT0){
1294 if(netif_rx_schedule_prep(dev)){
1295 /* Disable receive interupts */
1296 writel(RINTEN0, mmio + INTEN0);
1297 /* Schedule a polling routine */
1298 __netif_rx_schedule(dev);
1300 else if (intren0 & RINTEN0) {
1301 printk("************Driver bug! \
1302 interrupt while in poll\n");
1303 /* Fix by disable receive interrupts */
1304 writel(RINTEN0, mmio + INTEN0);
1307 #else
1308 if(intr0 & RINT0){
1309 amd8111e_rx(dev);
1310 writel(VAL2 | RDMD0, mmio + CMD0);
1312 #endif /* CONFIG_AMD8111E_NAPI */
1313 /* Check if Transmit Interrupt has occurred. */
1314 if(intr0 & TINT0)
1315 amd8111e_tx(dev);
1317 /* Check if Link Change Interrupt has occurred. */
1318 if (intr0 & LCINT)
1319 amd8111e_link_change(dev);
1321 /* Check if Hardware Timer Interrupt has occurred. */
1322 if (intr0 & STINT)
1323 amd8111e_calc_coalesce(dev);
1325 err_no_interrupt:
1326 writel( VAL0 | INTREN,mmio + CMD0);
1328 spin_unlock(&lp->lock);
1330 return IRQ_RETVAL(handled);
1333 #ifdef CONFIG_NET_POLL_CONTROLLER
1334 static void amd8111e_poll(struct net_device *dev)
1336 unsigned long flags;
1337 local_save_flags(flags);
1338 local_irq_disable();
1339 amd8111e_interrupt(0, dev, NULL);
1340 local_irq_restore(flags);
1342 #endif
1345 /*
1346 This function closes the network interface and updates the statistics so that most recent statistics will be available after the interface is down.
1347 */
1348 static int amd8111e_close(struct net_device * dev)
1350 struct amd8111e_priv *lp = netdev_priv(dev);
1351 netif_stop_queue(dev);
1353 spin_lock_irq(&lp->lock);
1355 amd8111e_disable_interrupt(lp);
1356 amd8111e_stop_chip(lp);
1357 amd8111e_free_ring(lp);
1359 netif_carrier_off(lp->amd8111e_net_dev);
1361 /* Delete ipg timer */
1362 if(lp->options & OPTION_DYN_IPG_ENABLE)
1363 del_timer_sync(&lp->ipg_data.ipg_timer);
1365 spin_unlock_irq(&lp->lock);
1366 free_irq(dev->irq, dev);
1368 /* Update the statistics before closing */
1369 amd8111e_get_stats(dev);
1370 lp->opened = 0;
1371 return 0;
1373 /* This function opens new interface.It requests irq for the device, initializes the device,buffers and descriptors, and starts the device.
1374 */
1375 static int amd8111e_open(struct net_device * dev )
1377 struct amd8111e_priv *lp = netdev_priv(dev);
1379 if(dev->irq ==0 || request_irq(dev->irq, amd8111e_interrupt, IRQF_SHARED,
1380 dev->name, dev))
1381 return -EAGAIN;
1383 spin_lock_irq(&lp->lock);
1385 amd8111e_init_hw_default(lp);
1387 if(amd8111e_restart(dev)){
1388 spin_unlock_irq(&lp->lock);
1389 if (dev->irq)
1390 free_irq(dev->irq, dev);
1391 return -ENOMEM;
1393 /* Start ipg timer */
1394 if(lp->options & OPTION_DYN_IPG_ENABLE){
1395 add_timer(&lp->ipg_data.ipg_timer);
1396 printk(KERN_INFO "%s: Dynamic IPG Enabled.\n",dev->name);
1399 lp->opened = 1;
1401 spin_unlock_irq(&lp->lock);
1403 netif_start_queue(dev);
1405 return 0;
1407 /*
1408 This function checks if there is any transmit descriptors available to queue more packet.
1409 */
1410 static int amd8111e_tx_queue_avail(struct amd8111e_priv* lp )
1412 int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
1413 if(lp->tx_skbuff[tx_index] != 0)
1414 return -1;
1415 else
1416 return 0;
1419 /*
1420 This function will queue the transmit packets to the descriptors and will trigger the send operation. It also initializes the transmit descriptors with buffer physical address, byte count, ownership to hardware etc.
1421 */
1423 static int amd8111e_start_xmit(struct sk_buff *skb, struct net_device * dev)
1425 struct amd8111e_priv *lp = netdev_priv(dev);
1426 int tx_index;
1427 unsigned long flags;
1429 spin_lock_irqsave(&lp->lock, flags);
1431 tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
1433 lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
1435 lp->tx_skbuff[tx_index] = skb;
1436 lp->tx_ring[tx_index].tx_flags = 0;
1438 #if AMD8111E_VLAN_TAG_USED
1439 if((lp->vlgrp != NULL) && vlan_tx_tag_present(skb)){
1440 lp->tx_ring[tx_index].tag_ctrl_cmd |=
1441 cpu_to_le16(TCC_VLAN_INSERT);
1442 lp->tx_ring[tx_index].tag_ctrl_info =
1443 cpu_to_le16(vlan_tx_tag_get(skb));
1446 #endif
1447 lp->tx_dma_addr[tx_index] =
1448 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
1449 lp->tx_ring[tx_index].buff_phy_addr =
1450 (u32) cpu_to_le32(lp->tx_dma_addr[tx_index]);
1452 /* Set FCS and LTINT bits */
1453 wmb();
1454 lp->tx_ring[tx_index].tx_flags |=
1455 cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
1457 lp->tx_idx++;
1459 /* Trigger an immediate send poll. */
1460 writel( VAL1 | TDMD0, lp->mmio + CMD0);
1461 writel( VAL2 | RDMD0,lp->mmio + CMD0);
1463 dev->trans_start = jiffies;
1465 if(amd8111e_tx_queue_avail(lp) < 0){
1466 netif_stop_queue(dev);
1468 spin_unlock_irqrestore(&lp->lock, flags);
1469 return 0;
1471 /*
1472 This function returns all the memory mapped registers of the device.
1473 */
1474 static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
1476 void __iomem *mmio = lp->mmio;
1477 /* Read only necessary registers */
1478 buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
1479 buf[1] = readl(mmio + XMT_RING_LEN0);
1480 buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
1481 buf[3] = readl(mmio + RCV_RING_LEN0);
1482 buf[4] = readl(mmio + CMD0);
1483 buf[5] = readl(mmio + CMD2);
1484 buf[6] = readl(mmio + CMD3);
1485 buf[7] = readl(mmio + CMD7);
1486 buf[8] = readl(mmio + INT0);
1487 buf[9] = readl(mmio + INTEN0);
1488 buf[10] = readl(mmio + LADRF);
1489 buf[11] = readl(mmio + LADRF+4);
1490 buf[12] = readl(mmio + STAT0);
1493 /*
1494 amd8111e crc generator implementation is different from the kernel
1495 ether_crc() function.
1496 */
1497 static int amd8111e_ether_crc(int len, char* mac_addr)
1499 int i,byte;
1500 unsigned char octet;
1501 u32 crc= INITCRC;
1503 for(byte=0; byte < len; byte++){
1504 octet = mac_addr[byte];
1505 for( i=0;i < 8; i++){
1506 /*If the next bit form the input stream is 1,subtract the divisor (CRC32) from the dividend(crc).*/
1507 if( (octet & 0x1) ^ (crc & 0x1) ){
1508 crc >>= 1;
1509 crc ^= CRC32;
1511 else
1512 crc >>= 1;
1514 octet >>= 1;
1517 return crc;
1519 /*
1520 This function sets promiscuos mode, all-multi mode or the multicast address
1521 list to the device.
1522 */
1523 static void amd8111e_set_multicast_list(struct net_device *dev)
1525 struct dev_mc_list* mc_ptr;
1526 struct amd8111e_priv *lp = netdev_priv(dev);
1527 u32 mc_filter[2] ;
1528 int i,bit_num;
1529 if(dev->flags & IFF_PROMISC){
1530 printk(KERN_INFO "%s: Setting promiscuous mode.\n",dev->name);
1531 writel( VAL2 | PROM, lp->mmio + CMD2);
1532 return;
1534 else
1535 writel( PROM, lp->mmio + CMD2);
1536 if(dev->flags & IFF_ALLMULTI || dev->mc_count > MAX_FILTER_SIZE){
1537 /* get all multicast packet */
1538 mc_filter[1] = mc_filter[0] = 0xffffffff;
1539 lp->mc_list = dev->mc_list;
1540 lp->options |= OPTION_MULTICAST_ENABLE;
1541 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1542 return;
1544 if( dev->mc_count == 0 ){
1545 /* get only own packets */
1546 mc_filter[1] = mc_filter[0] = 0;
1547 lp->mc_list = NULL;
1548 lp->options &= ~OPTION_MULTICAST_ENABLE;
1549 amd8111e_writeq(*(u64*)mc_filter,lp->mmio + LADRF);
1550 /* disable promiscous mode */
1551 writel(PROM, lp->mmio + CMD2);
1552 return;
1554 /* load all the multicast addresses in the logic filter */
1555 lp->options |= OPTION_MULTICAST_ENABLE;
1556 lp->mc_list = dev->mc_list;
1557 mc_filter[1] = mc_filter[0] = 0;
1558 for (i = 0, mc_ptr = dev->mc_list; mc_ptr && i < dev->mc_count;
1559 i++, mc_ptr = mc_ptr->next) {
1560 bit_num = ( amd8111e_ether_crc(ETH_ALEN,mc_ptr->dmi_addr) >> 26 ) & 0x3f;
1561 mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
1563 amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);
1565 /* To eliminate PCI posting bug */
1566 readl(lp->mmio + CMD2);
1570 static void amd8111e_get_drvinfo(struct net_device* dev, struct ethtool_drvinfo *info)
1572 struct amd8111e_priv *lp = netdev_priv(dev);
1573 struct pci_dev *pci_dev = lp->pci_dev;
1574 strcpy (info->driver, MODULE_NAME);
1575 strcpy (info->version, MODULE_VERS);
1576 sprintf(info->fw_version,"%u",chip_version);
1577 strcpy (info->bus_info, pci_name(pci_dev));
1580 static int amd8111e_get_regs_len(struct net_device *dev)
1582 return AMD8111E_REG_DUMP_LEN;
1585 static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
1587 struct amd8111e_priv *lp = netdev_priv(dev);
1588 regs->version = 0;
1589 amd8111e_read_regs(lp, buf);
1592 static int amd8111e_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1594 struct amd8111e_priv *lp = netdev_priv(dev);
1595 spin_lock_irq(&lp->lock);
1596 mii_ethtool_gset(&lp->mii_if, ecmd);
1597 spin_unlock_irq(&lp->lock);
1598 return 0;
1601 static int amd8111e_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1603 struct amd8111e_priv *lp = netdev_priv(dev);
1604 int res;
1605 spin_lock_irq(&lp->lock);
1606 res = mii_ethtool_sset(&lp->mii_if, ecmd);
1607 spin_unlock_irq(&lp->lock);
1608 return res;
1611 static int amd8111e_nway_reset(struct net_device *dev)
1613 struct amd8111e_priv *lp = netdev_priv(dev);
1614 return mii_nway_restart(&lp->mii_if);
1617 static u32 amd8111e_get_link(struct net_device *dev)
1619 struct amd8111e_priv *lp = netdev_priv(dev);
1620 return mii_link_ok(&lp->mii_if);
1623 static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1625 struct amd8111e_priv *lp = netdev_priv(dev);
1626 wol_info->supported = WAKE_MAGIC|WAKE_PHY;
1627 if (lp->options & OPTION_WOL_ENABLE)
1628 wol_info->wolopts = WAKE_MAGIC;
1631 static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
1633 struct amd8111e_priv *lp = netdev_priv(dev);
1634 if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
1635 return -EINVAL;
1636 spin_lock_irq(&lp->lock);
1637 if (wol_info->wolopts & WAKE_MAGIC)
1638 lp->options |=
1639 (OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
1640 else if(wol_info->wolopts & WAKE_PHY)
1641 lp->options |=
1642 (OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
1643 else
1644 lp->options &= ~OPTION_WOL_ENABLE;
1645 spin_unlock_irq(&lp->lock);
1646 return 0;
1649 static struct ethtool_ops ops = {
1650 .get_drvinfo = amd8111e_get_drvinfo,
1651 .get_regs_len = amd8111e_get_regs_len,
1652 .get_regs = amd8111e_get_regs,
1653 .get_settings = amd8111e_get_settings,
1654 .set_settings = amd8111e_set_settings,
1655 .nway_reset = amd8111e_nway_reset,
1656 .get_link = amd8111e_get_link,
1657 .get_wol = amd8111e_get_wol,
1658 .set_wol = amd8111e_set_wol,
1659 };
1661 /*
1662 This function handles all the ethtool ioctls. It gives driver info, gets/sets driver speed, gets memory mapped register values, forces auto negotiation, sets/gets WOL options for ethtool application.
1663 */
1665 static int amd8111e_ioctl(struct net_device * dev , struct ifreq *ifr, int cmd)
1667 struct mii_ioctl_data *data = if_mii(ifr);
1668 struct amd8111e_priv *lp = netdev_priv(dev);
1669 int err;
1670 u32 mii_regval;
1672 if (!capable(CAP_NET_ADMIN))
1673 return -EPERM;
1675 switch(cmd) {
1676 case SIOCGMIIPHY:
1677 data->phy_id = lp->ext_phy_addr;
1679 /* fallthru */
1680 case SIOCGMIIREG:
1682 spin_lock_irq(&lp->lock);
1683 err = amd8111e_read_phy(lp, data->phy_id,
1684 data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
1685 spin_unlock_irq(&lp->lock);
1687 data->val_out = mii_regval;
1688 return err;
1690 case SIOCSMIIREG:
1692 spin_lock_irq(&lp->lock);
1693 err = amd8111e_write_phy(lp, data->phy_id,
1694 data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
1695 spin_unlock_irq(&lp->lock);
1697 return err;
1699 default:
1700 /* do nothing */
1701 break;
1703 return -EOPNOTSUPP;
1705 static int amd8111e_set_mac_address(struct net_device *dev, void *p)
1707 struct amd8111e_priv *lp = netdev_priv(dev);
1708 int i;
1709 struct sockaddr *addr = p;
1711 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1712 spin_lock_irq(&lp->lock);
1713 /* Setting the MAC address to the device */
1714 for(i = 0; i < ETH_ADDR_LEN; i++)
1715 writeb( dev->dev_addr[i], lp->mmio + PADR + i );
1717 spin_unlock_irq(&lp->lock);
1719 return 0;
1722 /*
1723 This function changes the mtu of the device. It restarts the device to initialize the descriptor with new receive buffers.
1724 */
1725 static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
1727 struct amd8111e_priv *lp = netdev_priv(dev);
1728 int err;
1730 if ((new_mtu < AMD8111E_MIN_MTU) || (new_mtu > AMD8111E_MAX_MTU))
1731 return -EINVAL;
1733 if (!netif_running(dev)) {
1734 /* new_mtu will be used
1735 when device starts netxt time */
1736 dev->mtu = new_mtu;
1737 return 0;
1740 spin_lock_irq(&lp->lock);
1742 /* stop the chip */
1743 writel(RUN, lp->mmio + CMD0);
1745 dev->mtu = new_mtu;
1747 err = amd8111e_restart(dev);
1748 spin_unlock_irq(&lp->lock);
1749 if(!err)
1750 netif_start_queue(dev);
1751 return err;
1754 #if AMD8111E_VLAN_TAG_USED
1755 static void amd8111e_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
1757 struct amd8111e_priv *lp = netdev_priv(dev);
1758 spin_lock_irq(&lp->lock);
1759 lp->vlgrp = grp;
1760 spin_unlock_irq(&lp->lock);
1763 static void amd8111e_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1765 struct amd8111e_priv *lp = netdev_priv(dev);
1766 spin_lock_irq(&lp->lock);
1767 if (lp->vlgrp)
1768 lp->vlgrp->vlan_devices[vid] = NULL;
1769 spin_unlock_irq(&lp->lock);
1771 #endif
1772 static int amd8111e_enable_magicpkt(struct amd8111e_priv* lp)
1774 writel( VAL1|MPPLBA, lp->mmio + CMD3);
1775 writel( VAL0|MPEN_SW, lp->mmio + CMD7);
1777 /* To eliminate PCI posting bug */
1778 readl(lp->mmio + CMD7);
1779 return 0;
1782 static int amd8111e_enable_link_change(struct amd8111e_priv* lp)
1785 /* Adapter is already stoped/suspended/interrupt-disabled */
1786 writel(VAL0|LCMODE_SW,lp->mmio + CMD7);
1788 /* To eliminate PCI posting bug */
1789 readl(lp->mmio + CMD7);
1790 return 0;
1792 /* This function is called when a packet transmission fails to complete within a resonable period, on the assumption that an interrupts have been failed or the interface is locked up. This function will reinitialize the hardware */
1794 static void amd8111e_tx_timeout(struct net_device *dev)
1796 struct amd8111e_priv* lp = netdev_priv(dev);
1797 int err;
1799 printk(KERN_ERR "%s: transmit timed out, resetting\n",
1800 dev->name);
1801 spin_lock_irq(&lp->lock);
1802 err = amd8111e_restart(dev);
1803 spin_unlock_irq(&lp->lock);
1804 if(!err)
1805 netif_wake_queue(dev);
1807 static int amd8111e_suspend(struct pci_dev *pci_dev, pm_message_t state)
1809 struct net_device *dev = pci_get_drvdata(pci_dev);
1810 struct amd8111e_priv *lp = netdev_priv(dev);
1812 if (!netif_running(dev))
1813 return 0;
1815 /* disable the interrupt */
1816 spin_lock_irq(&lp->lock);
1817 amd8111e_disable_interrupt(lp);
1818 spin_unlock_irq(&lp->lock);
1820 netif_device_detach(dev);
1822 /* stop chip */
1823 spin_lock_irq(&lp->lock);
1824 if(lp->options & OPTION_DYN_IPG_ENABLE)
1825 del_timer_sync(&lp->ipg_data.ipg_timer);
1826 amd8111e_stop_chip(lp);
1827 spin_unlock_irq(&lp->lock);
1829 if(lp->options & OPTION_WOL_ENABLE){
1830 /* enable wol */
1831 if(lp->options & OPTION_WAKE_MAGIC_ENABLE)
1832 amd8111e_enable_magicpkt(lp);
1833 if(lp->options & OPTION_WAKE_PHY_ENABLE)
1834 amd8111e_enable_link_change(lp);
1836 pci_enable_wake(pci_dev, PCI_D3hot, 1);
1837 pci_enable_wake(pci_dev, PCI_D3cold, 1);
1840 else{
1841 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1842 pci_enable_wake(pci_dev, PCI_D3cold, 0);
1845 pci_save_state(pci_dev);
1846 pci_set_power_state(pci_dev, PCI_D3hot);
1848 return 0;
1850 static int amd8111e_resume(struct pci_dev *pci_dev)
1852 struct net_device *dev = pci_get_drvdata(pci_dev);
1853 struct amd8111e_priv *lp = netdev_priv(dev);
1855 if (!netif_running(dev))
1856 return 0;
1858 pci_set_power_state(pci_dev, PCI_D0);
1859 pci_restore_state(pci_dev);
1861 pci_enable_wake(pci_dev, PCI_D3hot, 0);
1862 pci_enable_wake(pci_dev, PCI_D3cold, 0); /* D3 cold */
1864 netif_device_attach(dev);
1866 spin_lock_irq(&lp->lock);
1867 amd8111e_restart(dev);
1868 /* Restart ipg timer */
1869 if(lp->options & OPTION_DYN_IPG_ENABLE)
1870 mod_timer(&lp->ipg_data.ipg_timer,
1871 jiffies + IPG_CONVERGE_JIFFIES);
1872 spin_unlock_irq(&lp->lock);
1874 return 0;
1878 static void __devexit amd8111e_remove_one(struct pci_dev *pdev)
1880 struct net_device *dev = pci_get_drvdata(pdev);
1881 if (dev) {
1882 unregister_netdev(dev);
1883 iounmap(((struct amd8111e_priv *)netdev_priv(dev))->mmio);
1884 free_netdev(dev);
1885 pci_release_regions(pdev);
1886 pci_disable_device(pdev);
1887 pci_set_drvdata(pdev, NULL);
1890 static void amd8111e_config_ipg(struct net_device* dev)
1892 struct amd8111e_priv *lp = netdev_priv(dev);
1893 struct ipg_info* ipg_data = &lp->ipg_data;
1894 void __iomem *mmio = lp->mmio;
1895 unsigned int prev_col_cnt = ipg_data->col_cnt;
1896 unsigned int total_col_cnt;
1897 unsigned int tmp_ipg;
1899 if(lp->link_config.duplex == DUPLEX_FULL){
1900 ipg_data->ipg = DEFAULT_IPG;
1901 return;
1904 if(ipg_data->ipg_state == SSTATE){
1906 if(ipg_data->timer_tick == IPG_STABLE_TIME){
1908 ipg_data->timer_tick = 0;
1909 ipg_data->ipg = MIN_IPG - IPG_STEP;
1910 ipg_data->current_ipg = MIN_IPG;
1911 ipg_data->diff_col_cnt = 0xFFFFFFFF;
1912 ipg_data->ipg_state = CSTATE;
1914 else
1915 ipg_data->timer_tick++;
1918 if(ipg_data->ipg_state == CSTATE){
1920 /* Get the current collision count */
1922 total_col_cnt = ipg_data->col_cnt =
1923 amd8111e_read_mib(mmio, xmt_collisions);
1925 if ((total_col_cnt - prev_col_cnt) <
1926 (ipg_data->diff_col_cnt)){
1928 ipg_data->diff_col_cnt =
1929 total_col_cnt - prev_col_cnt ;
1931 ipg_data->ipg = ipg_data->current_ipg;
1934 ipg_data->current_ipg += IPG_STEP;
1936 if (ipg_data->current_ipg <= MAX_IPG)
1937 tmp_ipg = ipg_data->current_ipg;
1938 else{
1939 tmp_ipg = ipg_data->ipg;
1940 ipg_data->ipg_state = SSTATE;
1942 writew((u32)tmp_ipg, mmio + IPG);
1943 writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
1945 mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
1946 return;
1950 static void __devinit amd8111e_probe_ext_phy(struct net_device* dev)
1952 struct amd8111e_priv *lp = netdev_priv(dev);
1953 int i;
1955 for (i = 0x1e; i >= 0; i--) {
1956 u32 id1, id2;
1958 if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
1959 continue;
1960 if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
1961 continue;
1962 lp->ext_phy_id = (id1 << 16) | id2;
1963 lp->ext_phy_addr = i;
1964 return;
1966 lp->ext_phy_id = 0;
1967 lp->ext_phy_addr = 1;
1970 static int __devinit amd8111e_probe_one(struct pci_dev *pdev,
1971 const struct pci_device_id *ent)
1973 int err,i,pm_cap;
1974 unsigned long reg_addr,reg_len;
1975 struct amd8111e_priv* lp;
1976 struct net_device* dev;
1978 err = pci_enable_device(pdev);
1979 if(err){
1980 printk(KERN_ERR "amd8111e: Cannot enable new PCI device,"
1981 "exiting.\n");
1982 return err;
1985 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)){
1986 printk(KERN_ERR "amd8111e: Cannot find PCI base address"
1987 "exiting.\n");
1988 err = -ENODEV;
1989 goto err_disable_pdev;
1992 err = pci_request_regions(pdev, MODULE_NAME);
1993 if(err){
1994 printk(KERN_ERR "amd8111e: Cannot obtain PCI resources, "
1995 "exiting.\n");
1996 goto err_disable_pdev;
1999 pci_set_master(pdev);
2001 /* Find power-management capability. */
2002 if((pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM))==0){
2003 printk(KERN_ERR "amd8111e: No Power Management capability, "
2004 "exiting.\n");
2005 goto err_free_reg;
2008 /* Initialize DMA */
2009 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) < 0) {
2010 printk(KERN_ERR "amd8111e: DMA not supported,"
2011 "exiting.\n");
2012 goto err_free_reg;
2015 reg_addr = pci_resource_start(pdev, 0);
2016 reg_len = pci_resource_len(pdev, 0);
2018 dev = alloc_etherdev(sizeof(struct amd8111e_priv));
2019 if (!dev) {
2020 printk(KERN_ERR "amd8111e: Etherdev alloc failed, exiting.\n");
2021 err = -ENOMEM;
2022 goto err_free_reg;
2025 SET_MODULE_OWNER(dev);
2026 SET_NETDEV_DEV(dev, &pdev->dev);
2028 #if AMD8111E_VLAN_TAG_USED
2029 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX ;
2030 dev->vlan_rx_register =amd8111e_vlan_rx_register;
2031 dev->vlan_rx_kill_vid = amd8111e_vlan_rx_kill_vid;
2032 #endif
2034 lp = netdev_priv(dev);
2035 lp->pci_dev = pdev;
2036 lp->amd8111e_net_dev = dev;
2037 lp->pm_cap = pm_cap;
2039 spin_lock_init(&lp->lock);
2041 lp->mmio = ioremap(reg_addr, reg_len);
2042 if (lp->mmio == 0) {
2043 printk(KERN_ERR "amd8111e: Cannot map device registers, "
2044 "exiting\n");
2045 err = -ENOMEM;
2046 goto err_free_dev;
2049 /* Initializing MAC address */
2050 for(i = 0; i < ETH_ADDR_LEN; i++)
2051 dev->dev_addr[i] =readb(lp->mmio + PADR + i);
2053 /* Setting user defined parametrs */
2054 lp->ext_phy_option = speed_duplex[card_idx];
2055 if(coalesce[card_idx])
2056 lp->options |= OPTION_INTR_COAL_ENABLE;
2057 if(dynamic_ipg[card_idx++])
2058 lp->options |= OPTION_DYN_IPG_ENABLE;
2060 /* Initialize driver entry points */
2061 dev->open = amd8111e_open;
2062 dev->hard_start_xmit = amd8111e_start_xmit;
2063 dev->stop = amd8111e_close;
2064 dev->get_stats = amd8111e_get_stats;
2065 dev->set_multicast_list = amd8111e_set_multicast_list;
2066 dev->set_mac_address = amd8111e_set_mac_address;
2067 dev->do_ioctl = amd8111e_ioctl;
2068 dev->change_mtu = amd8111e_change_mtu;
2069 SET_ETHTOOL_OPS(dev, &ops);
2070 dev->irq =pdev->irq;
2071 dev->tx_timeout = amd8111e_tx_timeout;
2072 dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
2073 #ifdef CONFIG_AMD8111E_NAPI
2074 dev->poll = amd8111e_rx_poll;
2075 dev->weight = 32;
2076 #endif
2077 #ifdef CONFIG_NET_POLL_CONTROLLER
2078 dev->poll_controller = amd8111e_poll;
2079 #endif
2081 #if AMD8111E_VLAN_TAG_USED
2082 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2083 dev->vlan_rx_register =amd8111e_vlan_rx_register;
2084 dev->vlan_rx_kill_vid = amd8111e_vlan_rx_kill_vid;
2085 #endif
2086 /* Probe the external PHY */
2087 amd8111e_probe_ext_phy(dev);
2089 /* setting mii default values */
2090 lp->mii_if.dev = dev;
2091 lp->mii_if.mdio_read = amd8111e_mdio_read;
2092 lp->mii_if.mdio_write = amd8111e_mdio_write;
2093 lp->mii_if.phy_id = lp->ext_phy_addr;
2095 /* Set receive buffer length and set jumbo option*/
2096 amd8111e_set_rx_buff_len(dev);
2099 err = register_netdev(dev);
2100 if (err) {
2101 printk(KERN_ERR "amd8111e: Cannot register net device, "
2102 "exiting.\n");
2103 goto err_iounmap;
2106 pci_set_drvdata(pdev, dev);
2108 /* Initialize software ipg timer */
2109 if(lp->options & OPTION_DYN_IPG_ENABLE){
2110 init_timer(&lp->ipg_data.ipg_timer);
2111 lp->ipg_data.ipg_timer.data = (unsigned long) dev;
2112 lp->ipg_data.ipg_timer.function = (void *)&amd8111e_config_ipg;
2113 lp->ipg_data.ipg_timer.expires = jiffies +
2114 IPG_CONVERGE_JIFFIES;
2115 lp->ipg_data.ipg = DEFAULT_IPG;
2116 lp->ipg_data.ipg_state = CSTATE;
2117 };
2119 /* display driver and device information */
2121 chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000)>>28;
2122 printk(KERN_INFO "%s: AMD-8111e Driver Version: %s\n", dev->name,MODULE_VERS);
2123 printk(KERN_INFO "%s: [ Rev %x ] PCI 10/100BaseT Ethernet ", dev->name, chip_version);
2124 for (i = 0; i < 6; i++)
2125 printk("%2.2x%c",dev->dev_addr[i],i == 5 ? ' ' : ':');
2126 printk( "\n");
2127 if (lp->ext_phy_id)
2128 printk(KERN_INFO "%s: Found MII PHY ID 0x%08x at address 0x%02x\n",
2129 dev->name, lp->ext_phy_id, lp->ext_phy_addr);
2130 else
2131 printk(KERN_INFO "%s: Couldn't detect MII PHY, assuming address 0x01\n",
2132 dev->name);
2133 return 0;
2134 err_iounmap:
2135 iounmap(lp->mmio);
2137 err_free_dev:
2138 free_netdev(dev);
2140 err_free_reg:
2141 pci_release_regions(pdev);
2143 err_disable_pdev:
2144 pci_disable_device(pdev);
2145 pci_set_drvdata(pdev, NULL);
2146 return err;
2150 static struct pci_driver amd8111e_driver = {
2151 .name = MODULE_NAME,
2152 .id_table = amd8111e_pci_tbl,
2153 .probe = amd8111e_probe_one,
2154 .remove = __devexit_p(amd8111e_remove_one),
2155 .suspend = amd8111e_suspend,
2156 .resume = amd8111e_resume
2157 };
2159 static int __init amd8111e_init(void)
2161 return pci_module_init(&amd8111e_driver);
2164 static void __exit amd8111e_cleanup(void)
2166 pci_unregister_driver(&amd8111e_driver);
2169 module_init(amd8111e_init);
2170 module_exit(amd8111e_cleanup);