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