patch-2.3.45 linux/drivers/net/rtl8139.c
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- Lines: 1474
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.44/linux/drivers/net/rtl8139.c
- Orig date:
Sat Feb 12 11:22:10 2000
diff -u --recursive --new-file v2.3.44/linux/drivers/net/rtl8139.c linux/drivers/net/rtl8139.c
@@ -1,1473 +0,0 @@
-/* rtl8139.c: A RealTek RTL8129/8139 Fast Ethernet driver for Linux. */
-/*
- Written 1997-1999 by Donald Becker.
-
- This software may be used and distributed according to the terms
- of the GNU Public License, incorporated herein by reference.
- All other rights reserved.
-
- This driver is for boards based on the RTL8129 and RTL8139 PCI ethernet
- chips.
-
- The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O
- Center of Excellence in Space Data and Information Sciences
- Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
-
- Support and updates available at
- http://cesdis.gsfc.nasa.gov/linux/drivers/rtl8139.html
-
- Twister-tuning table provided by Kinston <shangh@realtek.com.tw>.
-*/
-
-static const char *version =
-"rtl8139.c:v1.07 5/6/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/rtl8139.html\n";
-
-/* A few user-configurable values. */
-/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
-static int max_interrupt_work = 20;
-#define rtl8129_debug debug
-static int rtl8129_debug = 1;
-
-/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
- The RTL chips use a 64 element hash table based on the Ethernet CRC. */
-static int multicast_filter_limit = 32;
-
-/* Used to pass the full-duplex flag, etc. */
-#define MAX_UNITS 8 /* More are supported, limit only on options */
-static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
-static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
-
-/* Size of the in-memory receive ring. */
-#define RX_BUF_LEN_IDX 3 /* 0==8K, 1==16K, 2==32K, 3==64K */
-#define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
-/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
-#define TX_BUF_SIZE 1536
-
-/* PCI Tuning Parameters
- Threshold is bytes transferred to chip before transmission starts. */
-#define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
-
-/* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024. */
-#define RX_FIFO_THRESH 4 /* Rx buffer level before first PCI xfer. */
-#define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 bytes */
-#define TX_DMA_BURST 4 /* Calculate as 16<<val. */
-
-/* Operational parameters that usually are not changed. */
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT (4*HZ)
-
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/malloc.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <asm/bitops.h>
-#include <asm/io.h>
-
-/* Kernel compatibility defines, some common to David Hind's PCMCIA package.
- This is only in the support-all-kernels source code. */
-
-#define RUN_AT(x) (jiffies + (x))
-
-#include <linux/delay.h>
-
-#if LINUX_VERSION_CODE < 0x20123
-#define test_and_set_bit(val, addr) set_bit(val, addr)
-#endif
-#if LINUX_VERSION_CODE <= 0x20139
-#define net_device_stats enet_statistics
-#else
-#define NETSTATS_VER2
-#endif
-#if LINUX_VERSION_CODE < 0x20155 || defined(CARDBUS)
-/* Grrrr, the PCI code changed, but did not consider CardBus... */
-#include <linux/bios32.h>
-#define PCI_SUPPORT_VER1
-#else
-#define PCI_SUPPORT_VER2
-#endif
-
-/* The I/O extent. */
-#define RTL8129_TOTAL_SIZE 0x80
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This device driver is designed for the RealTek RTL8129, the RealTek Fast
-Ethernet controllers for PCI. This chip is used on a few clone boards.
-
-
-II. Board-specific settings
-
-PCI bus devices are configured by the system at boot time, so no jumpers
-need to be set on the board. The system BIOS will assign the
-PCI INTA signal to a (preferably otherwise unused) system IRQ line.
-Note: Kernel versions earlier than 1.3.73 do not support shared PCI
-interrupt lines.
-
-III. Driver operation
-
-IIIa. Rx Ring buffers
-
-The receive unit uses a single linear ring buffer rather than the more
-common (and more efficient) descriptor-based architecture. Incoming frames
-are sequentially stored into the Rx region, and the host copies them into
-skbuffs.
-
-Comment: While it is theoretically possible to process many frames in place,
-any delay in Rx processing would cause us to drop frames. More importantly,
-the Linux protocol stack is not designed to operate in this manner.
-
-IIIb. Tx operation
-
-The RTL8129 uses a fixed set of four Tx descriptors in register space.
-In a stunningly bad design choice, Tx frames must be 32 bit aligned. Linux
-aligns the IP header on word boundaries, and 14 byte ethernet header means
-that almost all frames will need to be copied to an alignment buffer.
-
-IVb. References
-
-http://www.realtek.com.tw/cn/cn.html
-http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html
-
-IVc. Errata
-
-*/
-
-
-/* This table drives the PCI probe routines. It's mostly boilerplate in all
- of the drivers, and will likely be provided by some future kernel.
- Note the matching code -- the first table entry matchs all 56** cards but
- second only the 1234 card.
-*/
-enum pci_flags_bit {
- PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4,
- PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3,
-};
-struct pci_id_info {
- const char *name;
- u16 vendor_id, device_id, device_id_mask, flags;
- int io_size;
- struct net_device *(*probe1)(struct pci_dev *pdev, int pci_bus, int pci_devfn, long ioaddr, int irq, int chip_idx, int fnd_cnt);
-};
-
-static struct net_device * rtl8129_probe1(struct pci_dev *pdev, int pci_bus,
- int pci_devfn, long ioaddr,
- int irq, int chp_idx, int fnd_cnt);
-
-static struct pci_id_info pci_tbl[] =
-{{ "RealTek RTL8129 Fast Ethernet",
- 0x10ec, 0x8129, 0xffff, PCI_USES_IO|PCI_USES_MASTER, 0x80, rtl8129_probe1},
- { "RealTek RTL8139 Fast Ethernet",
- 0x10ec, 0x8139, 0xffff, PCI_USES_IO|PCI_USES_MASTER, 0x80, rtl8129_probe1},
- { "SMC1211TX EZCard 10/100 (RealTek RTL8139)",
- 0x1113, 0x1211, 0xffff, PCI_USES_IO|PCI_USES_MASTER, 0x80, rtl8129_probe1},
- { "Accton MPX5030 (RealTek RTL8139)",
- 0x1113, 0x1211, 0xffff, PCI_USES_IO|PCI_USES_MASTER, 0x80, rtl8129_probe1},
- {0,}, /* 0 terminated list. */
-};
-
-/* The capability table matches the chip table above. */
-enum {HAS_MII_XCVR=0x01, HAS_CHIP_XCVR=0x02, HAS_LNK_CHNG=0x04};
-static int rtl_cap_tbl[] = {
- HAS_MII_XCVR, HAS_CHIP_XCVR|HAS_LNK_CHNG, HAS_CHIP_XCVR|HAS_LNK_CHNG,
-};
-
-
-/* The rest of these values should never change. */
-#define NUM_TX_DESC 4 /* Number of Tx descriptor registers. */
-
-/* Symbolic offsets to registers. */
-enum RTL8129_registers {
- MAC0=0, /* Ethernet hardware address. */
- MAR0=8, /* Multicast filter. */
- TxStatus0=0x10, /* Transmit status (Four 32bit registers). */
- TxAddr0=0x20, /* Tx descriptors (also four 32bit). */
- RxBuf=0x30, RxEarlyCnt=0x34, RxEarlyStatus=0x36,
- ChipCmd=0x37, RxBufPtr=0x38, RxBufAddr=0x3A,
- IntrMask=0x3C, IntrStatus=0x3E,
- TxConfig=0x40, RxConfig=0x44,
- Timer=0x48, /* A general-purpose counter. */
- RxMissed=0x4C, /* 24 bits valid, write clears. */
- Cfg9346=0x50, Config0=0x51, Config1=0x52,
- FlashReg=0x54, GPPinData=0x58, GPPinDir=0x59, MII_SMI=0x5A, HltClk=0x5B,
- MultiIntr=0x5C, TxSummary=0x60,
- MII_BMCR=0x62, MII_BMSR=0x64, NWayAdvert=0x66, NWayLPAR=0x68,
- NWayExpansion=0x6A,
- /* Undocumented registers, but required for proper operation. */
- FIFOTMS=0x70, /* FIFO Test Mode Select */
- CSCR=0x74, /* Chip Status and Configuration Register. */
- PARA78=0x78, PARA7c=0x7c, /* Magic transceiver parameter register. */
-};
-
-enum ChipCmdBits {
- CmdReset=0x10, CmdRxEnb=0x08, CmdTxEnb=0x04, RxBufEmpty=0x01, };
-
-/* Interrupt register bits, using my own meaningful names. */
-enum IntrStatusBits {
- PCIErr=0x8000, PCSTimeout=0x4000,
- RxFIFOOver=0x40, RxUnderrun=0x20, RxOverflow=0x10,
- TxErr=0x08, TxOK=0x04, RxErr=0x02, RxOK=0x01,
-};
-enum TxStatusBits {
- TxHostOwns=0x2000, TxUnderrun=0x4000, TxStatOK=0x8000,
- TxOutOfWindow=0x20000000, TxAborted=0x40000000, TxCarrierLost=0x80000000,
-};
-enum RxStatusBits {
- RxMulticast=0x8000, RxPhysical=0x4000, RxBroadcast=0x2000,
- RxBadSymbol=0x0020, RxRunt=0x0010, RxTooLong=0x0008, RxCRCErr=0x0004,
- RxBadAlign=0x0002, RxStatusOK=0x0001,
-};
-
-/* Twister tuning parameters from RealTek.
- Completely undocumented, but required to tune bad links. */
-enum CSCRBits {
- CSCR_LinkOKBit=0x0400, CSCR_LinkChangeBit=0x0800,
- CSCR_LinkStatusBits=0x0f000, CSCR_LinkDownOffCmd=0x003c0,
- CSCR_LinkDownCmd=0x0f3c0,
-};
-unsigned long param[4][4]={
- {0x0cb39de43,0x0cb39ce43,0x0fb38de03,0x0cb38de43},
- {0x0cb39de43,0x0cb39ce43,0x0cb39ce83,0x0cb39ce83},
- {0x0cb39de43,0x0cb39ce43,0x0cb39ce83,0x0cb39ce83},
- {0x0bb39de43,0x0bb39ce43,0x0bb39ce83,0x0bb39ce83}
-};
-
-struct ring_info {
- struct sk_buff *skb;
- dma_addr_t mapping;
-};
-
-struct rtl8129_private {
- char devname[8]; /* Used only for kernel debugging. */
- const char *product_name;
- struct net_device *next_module;
- struct pci_dev *pdev;
- int chip_id;
- int chip_revision;
- unsigned char pci_bus, pci_devfn;
-#if LINUX_VERSION_CODE > 0x20139
- struct net_device_stats stats;
-#else
- struct enet_statistics stats;
-#endif
- struct timer_list timer; /* Media selection timer. */
- unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */
- unsigned int cur_tx, dirty_tx, tx_flag;
- /* The saved address of a sent-in-place packet/buffer, for skfree(). */
- struct ring_info tx_info[NUM_TX_DESC];
- unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
- unsigned char *rx_ring;
- unsigned char *tx_bufs; /* Tx bounce buffer region. */
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_bufs_dma;
- char phys[4]; /* MII device addresses. */
- char twistie, twist_cnt; /* Twister tune state. */
- unsigned int tx_full:1; /* The Tx queue is full. */
- unsigned int full_duplex:1; /* Full-duplex operation requested. */
- unsigned int duplex_lock:1;
- unsigned int default_port:4; /* Last dev->if_port value. */
- unsigned int media2:4; /* Secondary monitored media port. */
- unsigned int medialock:1; /* Don't sense media type. */
- unsigned int mediasense:1; /* Media sensing in progress. */
-};
-
-#ifdef MODULE
-#if LINUX_VERSION_CODE > 0x20115
-MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>");
-MODULE_DESCRIPTION("RealTek RTL8129/8139 Fast Ethernet driver");
-MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i");
-MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");
-MODULE_PARM(multicast_filter_limit, "i");
-MODULE_PARM(max_interrupt_work, "i");
-MODULE_PARM(debug, "i");
-#endif
-#endif
-
-static int rtl8129_open(struct net_device *dev);
-static int read_eeprom(long ioaddr, int location);
-static int mdio_read(struct net_device *dev, int phy_id, int location);
-static void mdio_write(struct net_device *dev, int phy_id, int location, int val);
-static void rtl8129_timer(unsigned long data);
-static void rtl8129_tx_timeout(struct net_device *dev);
-static void rtl8129_init_ring(struct net_device *dev);
-static int rtl8129_start_xmit(struct sk_buff *skb, struct net_device *dev);
-static int rtl8129_rx(struct net_device *dev);
-static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
-static int rtl8129_close(struct net_device *dev);
-static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static struct enet_statistics *rtl8129_get_stats(struct net_device *dev);
-static inline u32 ether_crc(int length, unsigned char *data);
-static void set_rx_mode(struct net_device *dev);
-
-
-/* A list of all installed RTL8129 devices, for removing the driver module. */
-static struct net_device *root_rtl8129_dev = NULL;
-
-/* Ideally we would detect all network cards in slot order. That would
- be best done a central PCI probe dispatch, which wouldn't work
- well when dynamically adding drivers. So instead we detect just the
- Rtl81*9 cards in slot order. */
-
-int rtl8139_probe(void)
-{
- int cards_found = 0;
- int pci_index = 0;
- unsigned char pci_bus, pci_device_fn;
- struct net_device *dev;
-
- if ( ! pcibios_present())
- return -ENODEV;
-
- for (; pci_index < 0xff; pci_index++) {
- struct pci_dev *pdev;
- u16 vendor, device, pci_command, new_command;
- int chip_idx, irq;
- long ioaddr;
-
- if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, pci_index,
- &pci_bus, &pci_device_fn)
- != PCIBIOS_SUCCESSFUL)
- break;
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_VENDOR_ID, &vendor);
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_DEVICE_ID, &device);
-
- for (chip_idx = 0; pci_tbl[chip_idx].vendor_id; chip_idx++)
- if (vendor == pci_tbl[chip_idx].vendor_id
- && (device & pci_tbl[chip_idx].device_id_mask) ==
- pci_tbl[chip_idx].device_id)
- break;
- if (pci_tbl[chip_idx].vendor_id == 0) /* Compiled out! */
- continue;
-
- pdev = pci_find_slot(pci_bus, pci_device_fn);
- ioaddr = pdev->resource[0].start;
- irq = pdev->irq;
-
- if ((pci_tbl[chip_idx].flags & PCI_USES_IO) &&
- check_region(ioaddr, pci_tbl[chip_idx].io_size))
- continue;
-
- /* Activate the card: fix for brain-damaged Win98 BIOSes. */
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_COMMAND, &pci_command);
- new_command = pci_command | (pci_tbl[chip_idx].flags & 7);
- if (pci_command != new_command) {
- printk(KERN_INFO " The PCI BIOS has not enabled the"
- " device at %d/%d! Updating PCI command %4.4x->%4.4x.\n",
- pci_bus, pci_device_fn, pci_command, new_command);
- pcibios_write_config_word(pci_bus, pci_device_fn,
- PCI_COMMAND, new_command);
- }
-
- dev = pci_tbl[chip_idx].probe1(pdev, pci_bus, pci_device_fn, ioaddr, irq, chip_idx, cards_found);
-
- if (dev && (pci_tbl[chip_idx].flags & PCI_COMMAND_MASTER)) {
- u8 pci_latency;
- pcibios_read_config_byte(pci_bus, pci_device_fn,
- PCI_LATENCY_TIMER, &pci_latency);
- if (pci_latency < 32) {
- printk(KERN_NOTICE " PCI latency timer (CFLT) is "
- "unreasonably low at %d. Setting to 64 clocks.\n",
- pci_latency);
- pcibios_write_config_byte(pci_bus, pci_device_fn,
- PCI_LATENCY_TIMER, 64);
- }
- }
- dev = 0;
- cards_found++;
- }
-
- return cards_found ? 0 : -ENODEV;
-}
-
-static struct net_device *rtl8129_probe1(struct pci_dev *pdev, int pci_bus,
- int pci_devfn, long ioaddr,
- int irq, int chip_idx, int found_cnt)
-{
- static int did_version = 0; /* Already printed version info. */
- struct rtl8129_private *tp;
- int i, option = found_cnt < MAX_UNITS ? options[found_cnt] : 0;
- struct net_device *dev;
-
- if (rtl8129_debug > 0 && did_version++ == 0)
- printk(KERN_INFO "%s", version);
-
- dev = init_etherdev(NULL, 0);
-
- printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ",
- dev->name, pci_tbl[chip_idx].name, ioaddr, irq);
-
- /* Bring the chip out of low-power mode. */
- outb(0x00, ioaddr + Config1);
-
- if (read_eeprom(ioaddr, 0) != 0xffff) {
- for (i = 0; i < 3; i++) {
- ((u16 *)(dev->dev_addr))[i] =
- le16_to_cpu(read_eeprom(ioaddr, i + 7));
- }
- } else {
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = inb(ioaddr + MAC0 + i);
- }
- for (i = 0; i < 5; i++)
- printk("%2.2x:", dev->dev_addr[i]);
- printk("%2.2x.\n", dev->dev_addr[i]);
-
- /* We do a request_region() to register /proc/ioports info. */
- request_region(ioaddr, pci_tbl[chip_idx].io_size, dev->name);
-
- dev->base_addr = ioaddr;
- dev->irq = irq;
-
- /* Some data structures must be quadword aligned. */
- tp = kmalloc(sizeof(*tp), GFP_KERNEL | GFP_DMA);
- memset(tp, 0, sizeof(*tp));
- dev->priv = tp;
-
- tp->next_module = root_rtl8129_dev;
- root_rtl8129_dev = dev;
-
- tp->pdev = pdev;
- tp->chip_id = chip_idx;
- tp->pci_bus = pci_bus;
- tp->pci_devfn = pci_devfn;
-
- /* Find the connected MII xcvrs.
- Doing this in open() would allow detecting external xcvrs later, but
- takes too much time. */
- if (rtl_cap_tbl[chip_idx] & HAS_MII_XCVR) {
- int phy, phy_idx;
- for (phy = 0, phy_idx = 0; phy < 32 && phy_idx < sizeof(tp->phys);
- phy++) {
- int mii_status = mdio_read(dev, phy, 1);
- if (mii_status != 0xffff && mii_status != 0x0000) {
- tp->phys[phy_idx++] = phy;
- printk(KERN_INFO "%s: MII transceiver found at address %d.\n",
- dev->name, phy);
- }
- }
- if (phy_idx == 0) {
- printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM "
- "transceiver.\n",
- dev->name);
- tp->phys[0] = -1;
- }
- } else
- tp->phys[0] = 32;
-
- /* Put the chip into low-power mode. */
- outb(0xC0, ioaddr + Cfg9346);
- outb(0x03, ioaddr + Config1);
- outb('H', ioaddr + HltClk); /* 'R' would leave the clock running. */
-
- /* The lower four bits are the media type. */
- if (option > 0) {
- tp->full_duplex = (option & 0x200) ? 1 : 0;
- tp->default_port = option & 15;
- if (tp->default_port)
- tp->medialock = 1;
- }
-
- if (found_cnt < MAX_UNITS && full_duplex[found_cnt] > 0)
- tp->full_duplex = full_duplex[found_cnt];
-
- if (tp->full_duplex) {
- printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name);
- mdio_write(dev, tp->phys[0], 4, 0x141);
- tp->duplex_lock = 1;
- }
-
- /* The Rtl8129-specific entries in the device structure. */
- dev->open = &rtl8129_open;
- dev->hard_start_xmit = &rtl8129_start_xmit;
- dev->tx_timeout = &rtl8129_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- dev->stop = &rtl8129_close;
- dev->get_stats = &rtl8129_get_stats;
- dev->set_multicast_list = &set_rx_mode;
- dev->do_ioctl = &mii_ioctl;
-
- return dev;
-}
-
-/* Serial EEPROM section. */
-
-/* EEPROM_Ctrl bits. */
-#define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
-#define EE_CS 0x08 /* EEPROM chip select. */
-#define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
-#define EE_WRITE_0 0x00
-#define EE_WRITE_1 0x02
-#define EE_DATA_READ 0x01 /* EEPROM chip data out. */
-#define EE_ENB (0x80 | EE_CS)
-
-/* Delay between EEPROM clock transitions.
- No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
- */
-
-#define eeprom_delay() inl(ee_addr)
-
-/* The EEPROM commands include the alway-set leading bit. */
-#define EE_WRITE_CMD (5 << 6)
-#define EE_READ_CMD (6 << 6)
-#define EE_ERASE_CMD (7 << 6)
-
-static int read_eeprom(long ioaddr, int location)
-{
- int i;
- unsigned retval = 0;
- long ee_addr = ioaddr + Cfg9346;
- int read_cmd = location | EE_READ_CMD;
-
- outb(EE_ENB & ~EE_CS, ee_addr);
- outb(EE_ENB, ee_addr);
-
- /* Shift the read command bits out. */
- for (i = 10; i >= 0; i--) {
- int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
- outb(EE_ENB | dataval, ee_addr);
- eeprom_delay();
- outb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
- eeprom_delay();
- }
- outb(EE_ENB, ee_addr);
- eeprom_delay();
-
- for (i = 16; i > 0; i--) {
- outb(EE_ENB | EE_SHIFT_CLK, ee_addr);
- eeprom_delay();
- retval = (retval << 1) | ((inb(ee_addr) & EE_DATA_READ) ? 1 : 0);
- outb(EE_ENB, ee_addr);
- eeprom_delay();
- }
-
- /* Terminate the EEPROM access. */
- outb(~EE_CS, ee_addr);
- return retval;
-}
-
-/* MII serial management: mostly bogus for now. */
-/* Read and write the MII management registers using software-generated
- serial MDIO protocol.
- The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
- met by back-to-back PCI I/O cycles, but we insert a delay to avoid
- "overclocking" issues. */
-#define MDIO_DIR 0x80
-#define MDIO_DATA_OUT 0x04
-#define MDIO_DATA_IN 0x02
-#define MDIO_CLK 0x01
-#define MDIO_WRITE0 (MDIO_DIR)
-#define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
-
-#define mdio_delay() inb(mdio_addr)
-
-static char mii_2_8139_map[8] = {MII_BMCR, MII_BMSR, 0, 0, NWayAdvert,
- NWayLPAR, NWayExpansion, 0 };
-
-/* Syncronize the MII management interface by shifting 32 one bits out. */
-static void mdio_sync(long mdio_addr)
-{
- int i;
-
- for (i = 32; i >= 0; i--) {
- outb(MDIO_WRITE1, mdio_addr);
- mdio_delay();
- outb(MDIO_WRITE1 | MDIO_CLK, mdio_addr);
- mdio_delay();
- }
- return;
-}
-static int mdio_read(struct net_device *dev, int phy_id, int location)
-{
- long mdio_addr = dev->base_addr + MII_SMI;
- int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
- int retval = 0;
- int i;
-
- if (phy_id > 31) { /* Really a 8139. Use internal registers. */
- return location < 8 && mii_2_8139_map[location] ?
- inw(dev->base_addr + mii_2_8139_map[location]) : 0;
- }
- mdio_sync(mdio_addr);
- /* Shift the read command bits out. */
- for (i = 15; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
-
- outb(MDIO_DIR | dataval, mdio_addr);
- mdio_delay();
- outb(MDIO_DIR | dataval | MDIO_CLK, mdio_addr);
- mdio_delay();
- }
-
- /* Read the two transition, 16 data, and wire-idle bits. */
- for (i = 19; i > 0; i--) {
- outb(0, mdio_addr);
- mdio_delay();
- retval = (retval << 1) | ((inb(mdio_addr) & MDIO_DATA_IN) ? 1 : 0);
- outb(MDIO_CLK, mdio_addr);
- mdio_delay();
- }
- return (retval>>1) & 0xffff;
-}
-
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
-{
- long mdio_addr = dev->base_addr + MII_SMI;
- int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value;
- int i;
-
- if (phy_id > 31) { /* Really a 8139. Use internal registers. */
- if (location < 8 && mii_2_8139_map[location])
- outw(value, dev->base_addr + mii_2_8139_map[location]);
- return;
- }
- mdio_sync(mdio_addr);
-
- /* Shift the command bits out. */
- for (i = 31; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
- outb(dataval, mdio_addr);
- mdio_delay();
- outb(dataval | MDIO_CLK, mdio_addr);
- mdio_delay();
- }
- /* Clear out extra bits. */
- for (i = 2; i > 0; i--) {
- outb(0, mdio_addr);
- mdio_delay();
- outb(MDIO_CLK, mdio_addr);
- mdio_delay();
- }
- return;
-}
-
-
-static int
-rtl8129_open(struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int i;
-
- /* Soft reset the chip. */
- outb(CmdReset, ioaddr + ChipCmd);
-
- if (request_irq(dev->irq, &rtl8129_interrupt, SA_SHIRQ, dev->name, dev)) {
- return -EAGAIN;
- }
-
- MOD_INC_USE_COUNT;
-
- tp->tx_bufs = pci_alloc_consistent(tp->pdev,
- TX_BUF_SIZE * NUM_TX_DESC,
- &tp->tx_bufs_dma);
- tp->rx_ring = pci_alloc_consistent(tp->pdev,
- RX_BUF_LEN + 16,
- &tp->rx_ring_dma);
- if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
- free_irq(dev->irq, dev);
- if (tp->tx_bufs)
- pci_free_consistent(tp->pdev,
- TX_BUF_SIZE * NUM_TX_DESC,
- tp->tx_bufs, tp->tx_bufs_dma);
- if (tp->rx_ring)
- pci_free_consistent(tp->pdev,
- RX_BUF_LEN + 16,
- tp->rx_ring, tp->rx_ring_dma);
- if (rtl8129_debug > 0)
- printk(KERN_ERR "%s: Couldn't allocate a %d byte receive ring.\n",
- dev->name, RX_BUF_LEN);
- return -ENOMEM;
- }
- rtl8129_init_ring(dev);
-
- /* Check that the chip has finished the reset. */
- for (i = 1000; i > 0; i--)
- if ((inb(ioaddr + ChipCmd) & CmdReset) == 0)
- break;
-
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + MAC0 + i);
-
- /* Must enable Tx/Rx before setting transfer thresholds! */
- outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
- outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) | (RX_DMA_BURST<<8),
- ioaddr + RxConfig);
- outl((TX_DMA_BURST<<8)|0x03000000, ioaddr + TxConfig);
- tp->tx_flag = (TX_FIFO_THRESH<<11) & 0x003f0000;
-
- tp->full_duplex = tp->duplex_lock;
- if (tp->phys[0] >= 0 || (rtl_cap_tbl[tp->chip_id] & HAS_MII_XCVR)) {
- u16 mii_reg5 = mdio_read(dev, tp->phys[0], 5);
- if (mii_reg5 == 0xffff)
- ; /* Not there */
- else if ((mii_reg5 & 0x0100) == 0x0100
- || (mii_reg5 & 0x00C0) == 0x0040)
- tp->full_duplex = 1;
- if (rtl8129_debug > 1)
- printk(KERN_INFO"%s: Setting %s%s-duplex based on"
- " auto-negotiated partner ability %4.4x.\n", dev->name,
- mii_reg5 == 0 ? "" :
- (mii_reg5 & 0x0180) ? "100mbps " : "10mbps ",
- tp->full_duplex ? "full" : "half", mii_reg5);
- }
-
- outb(0xC0, ioaddr + Cfg9346);
- outb(tp->full_duplex ? 0x60 : 0x20, ioaddr + Config1);
- outb(0x00, ioaddr + Cfg9346);
-
- outl(tp->rx_ring_dma, ioaddr + RxBuf);
-
- /* Start the chip's Tx and Rx process. */
- outl(0, ioaddr + RxMissed);
- set_rx_mode(dev);
-
- outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
-
- /* Enable all known interrupts by setting the interrupt mask. */
- outw(PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver
- | TxErr | TxOK | RxErr | RxOK, ioaddr + IntrMask);
-
- if (rtl8129_debug > 1)
- printk(KERN_DEBUG"%s: rtl8129_open() ioaddr %#lx IRQ %d"
- " GP Pins %2.2x %s-duplex.\n",
- dev->name, ioaddr, dev->irq, inb(ioaddr + GPPinData),
- tp->full_duplex ? "full" : "half");
-
- /* Set the timer to switch to check for link beat and perhaps switch
- to an alternate media type. */
- init_timer(&tp->timer);
- tp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */
- tp->timer.data = (unsigned long)dev;
- tp->timer.function = &rtl8129_timer;
- add_timer(&tp->timer);
-
- return 0;
-}
-
-static void rtl8129_timer(unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int next_tick = 60*HZ;
- int mii_reg5 = mdio_read(dev, tp->phys[0], 5);
-
- if (! tp->duplex_lock && mii_reg5 != 0xffff) {
- int duplex = (mii_reg5&0x0100) || (mii_reg5 & 0x01C0) == 0x0040;
- if (tp->full_duplex != duplex) {
- tp->full_duplex = duplex;
- printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link"
- " partner ability of %4.4x.\n", dev->name,
- tp->full_duplex ? "full" : "half", tp->phys[0], mii_reg5);
- outb(0xC0, ioaddr + Cfg9346);
- outb(tp->full_duplex ? 0x60 : 0x20, ioaddr + Config1);
- outb(0x00, ioaddr + Cfg9346);
- }
- }
- /* Check for bogusness. */
- if (inw(ioaddr + IntrStatus) & (TxOK | RxOK)) {
- int status = inw(ioaddr + IntrStatus);
- if (status & (TxOK | RxOK)) { /* Double check */
- printk(KERN_ERR "%s: RTL8139 Interrupt line blocked, status %x.\n",
- dev->name, status);
- rtl8129_interrupt(dev->irq, dev, 0);
- }
- }
- if (test_bit(LINK_STATE_XOFF, &dev->state) &&
- (jiffies - dev->trans_start) >= 2*TX_TIMEOUT)
- rtl8129_tx_timeout(dev);
-
-#if 0
- if (tp->twistie) {
- unsigned int CSCRval = inw(ioaddr + CSCR); /* Read link status. */
- if (tp->twistie == 1) {
- if (CSCRval & CSCR_LinkOKBit) {
- outw(CSCR_LinkDownOffCmd, ioaddr + CSCR);
- tp->twistie = 2;
- next_tick = HZ/10;
- } else {
- outw(CSCR_LinkDownCmd, ioaddr + CSCR);
- outl(FIFOTMS_default,ioaddr + FIFOTMS);
- outl(PARA78_default ,ioaddr + PARA78);
- outl(PARA7c_default ,ioaddr + PARA7c);
- tp->twistie = 0;
- }
- } else if (tp->twistie == 2) {
- int linkcase = (CSCRval & CSCR_LinkStatusBits) >> 12;
- int row;
- if (linkcase >= 0x7000) row = 3;
- else if (linkcase >= 0x3000) row = 2;
- else if (linkcase >= 0x1000) row = 1;
- else row = 0;
- tp->twistie == row + 3;
- outw(0,ioaddr+FIFOTMS);
- outl(param[row][0], ioaddr+PARA7c);
- tp->twist_cnt = 1;
- } else {
- outl(param[tp->twistie-3][tp->twist_cnt], ioaddr+PARA7c);
- if (++tp->twist_cnt < 4) {
- next_tick = HZ/10;
- } else if (tp->twistie-3 == 3) {
- if ((CSCRval & CSCR_LinkStatusBits) != 0x7000) {
- outl(PARA7c_xxx, ioaddr+PARA7c);
- next_tick = HZ/10; /* 100ms. */
- outl(FIFOTMS_default, ioaddr+FIFOTMS);
- outl(PARA78_default, ioaddr+PARA78);
- outl(PARA7c_default, ioaddr+PARA7c);
- tp->twistie == 3 + 3;
- outw(0,ioaddr+FIFOTMS);
- outl(param[3][0], ioaddr+PARA7c);
- tp->twist_cnt = 1;
- }
- }
- }
- }
-#endif
-
- if (rtl8129_debug > 2) {
- if (rtl_cap_tbl[tp->chip_id] & HAS_MII_XCVR)
- printk(KERN_DEBUG"%s: Media selection tick, GP pins %2.2x.\n",
- dev->name, inb(ioaddr + GPPinData));
- else
- printk(KERN_DEBUG"%s: Media selection tick, Link partner %4.4x.\n",
- dev->name, inw(ioaddr + NWayLPAR));
- printk(KERN_DEBUG"%s: Other registers are IntMask %4.4x IntStatus %4.4x"
- " RxStatus %4.4x.\n",
- dev->name, inw(ioaddr + IntrMask), inw(ioaddr + IntrStatus),
- inl(ioaddr + RxEarlyStatus));
- printk(KERN_DEBUG"%s: Chip config %2.2x %2.2x.\n",
- dev->name, inb(ioaddr + Config0), inb(ioaddr + Config1));
- }
-
- tp->timer.expires = RUN_AT(next_tick);
- add_timer(&tp->timer);
-}
-
-static void rtl8129_tx_timeout(struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int mii_reg, i;
-
- if (rtl8129_debug > 0)
- printk(KERN_WARNING "%s: Transmit timeout, status %2.2x %4.4x "
- "media %2.2x.\n",
- dev->name, inb(ioaddr + ChipCmd), inw(ioaddr + IntrStatus),
- inb(ioaddr + GPPinData));
-
- /* Disable interrupts by clearing the interrupt mask. */
- outw(0x0000, ioaddr + IntrMask);
- /* Emit info to figure out what went wrong. */
- printk("%s: Tx queue start entry %d dirty entry %d.\n",
- dev->name, tp->cur_tx, tp->dirty_tx);
- for (i = 0; i < NUM_TX_DESC; i++)
- printk(KERN_DEBUG"%s: Tx descriptor %d is %8.8x.%s\n",
- dev->name, i, inl(ioaddr + TxStatus0 + i*4),
- i == tp->dirty_tx % NUM_TX_DESC ? " (queue head)" : "");
- printk(KERN_DEBUG"%s: MII #%d registers are:", dev->name, tp->phys[0]);
- for (mii_reg = 0; mii_reg < 8; mii_reg++)
- printk(" %4.4x", mdio_read(dev, tp->phys[0], mii_reg));
- printk(".\n");
-
- /* Soft reset the chip. */
- outb(CmdReset, ioaddr + ChipCmd);
- /* Check that the chip has finished the reset. */
- for (i = 1000; i > 0; i--)
- if ((inb(ioaddr + ChipCmd) & CmdReset) == 0)
- break;
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + MAC0 + i);
-
- outb(0x00, ioaddr + Cfg9346);
- tp->cur_rx = 0;
- /* Must enable Tx/Rx before setting transfer thresholds! */
- outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
- outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) | (RX_DMA_BURST<<8),
- ioaddr + RxConfig);
- outl((TX_DMA_BURST<<8), ioaddr + TxConfig);
- set_rx_mode(dev);
- { /* Save the unsent Tx packets. */
- struct sk_buff *saved_skb[NUM_TX_DESC], *skb;
- int j;
- for (j = 0; tp->cur_tx - tp->dirty_tx > 0 ; j++, tp->dirty_tx++) {
- struct ring_info *rp = &tp->tx_info[tp->dirty_tx % NUM_TX_DESC];
-
- saved_skb[j] = rp->skb;
- if (rp->mapping != 0) {
- pci_unmap_single(tp->pdev, rp->mapping, rp->skb->len);
- rp->mapping = 0;
- }
- }
- tp->dirty_tx = tp->cur_tx = 0;
-
- for (i = 0; i < j; i++) {
- skb = tp->tx_info[i].skb = saved_skb[i];
- if ((long)skb->data & 3) { /* Must use alignment buffer. */
- memcpy(tp->tx_buf[i], skb->data, skb->len);
- outl(tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs),
- ioaddr + TxAddr0 + i*4);
- } else {
- tp->tx_info[i].mapping =
- pci_map_single(tp->pdev, skb->data, skb->len);
- outl(tp->tx_info[i].mapping, ioaddr + TxAddr0 + i*4);
- }
- /* Note: the chip doesn't have auto-pad! */
- outl(tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN),
- ioaddr + TxStatus0 + i*4);
- }
- tp->cur_tx = i;
- while (i < NUM_TX_DESC) {
- tp->tx_info[i].skb = NULL;
- tp->tx_info[i].mapping = 0;
- i++;
- }
- if (tp->cur_tx - tp->dirty_tx < NUM_TX_DESC) {/* Typical path */
- netif_wake_queue(dev);
- tp->tx_full = 0;
- } else {
- tp->tx_full = 1;
- }
- }
-
- dev->trans_start = jiffies;
- tp->stats.tx_errors++;
- /* Enable all known interrupts by setting the interrupt mask. */
- outw(PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver
- | TxErr | TxOK | RxErr | RxOK, ioaddr + IntrMask);
- return;
-}
-
-
-/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
-static void
-rtl8129_init_ring(struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- int i;
-
- tp->tx_full = 0;
- tp->cur_rx = 0;
- tp->dirty_tx = tp->cur_tx = 0;
-
- for (i = 0; i < NUM_TX_DESC; i++) {
- tp->tx_buf[i] = &tp->tx_bufs[i*TX_BUF_SIZE];
- tp->tx_info[i].skb = NULL;
- tp->tx_info[i].mapping = 0;
- }
-}
-
-static int
-rtl8129_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int entry;
-
- netif_stop_queue(dev);
-
- /* Calculate the next Tx descriptor entry. */
- entry = tp->cur_tx % NUM_TX_DESC;
-
- tp->tx_info[entry].skb = skb;
- if ((long)skb->data & 3) { /* Must use alignment buffer. */
- tp->tx_info[entry].mapping = 0;
- memcpy(tp->tx_buf[entry], skb->data, skb->len);
- outl(tp->tx_bufs_dma + (tp->tx_buf[entry] - tp->tx_bufs),
- ioaddr + TxAddr0 + entry*4);
- } else {
- tp->tx_info[entry].mapping =
- pci_map_single(tp->pdev, skb->data, skb->len);
- outl(tp->tx_info[entry].mapping, ioaddr + TxAddr0 + entry*4);
- }
- /* Note: the chip doesn't have auto-pad! */
- outl(tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN),
- ioaddr + TxStatus0 + entry*4);
-
- if (++tp->cur_tx - tp->dirty_tx < NUM_TX_DESC) { /* Typical path */
- netif_start_queue(dev);
- } else {
- tp->tx_full = 1;
- }
-
- dev->trans_start = jiffies;
- if (rtl8129_debug > 4)
- printk(KERN_DEBUG"%s: Queued Tx packet at %p size %d to slot %d.\n",
- dev->name, skb->data, (int)skb->len, entry);
-
- return 0;
-}
-
-/* The interrupt handler does all of the Rx thread work and cleans up
- after the Tx thread. */
-static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
-{
- struct net_device *dev = (struct net_device *)dev_instance;
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- int boguscnt = max_interrupt_work;
- int status, link_changed = 0;
- long ioaddr = dev->base_addr;
-
- do {
- status = inw(ioaddr + IntrStatus);
- /* Acknowledge all of the current interrupt sources ASAP, but
- an first get an additional status bit from CSCR. */
- if ((status & RxUnderrun) && inw(ioaddr+CSCR) & CSCR_LinkChangeBit)
- link_changed = 1;
- outw(status, ioaddr + IntrStatus);
-
- if (rtl8129_debug > 4)
- printk(KERN_DEBUG"%s: interrupt status=%#4.4x new intstat=%#4.4x.\n",
- dev->name, status, inw(ioaddr + IntrStatus));
-
- if ((status & (PCIErr|PCSTimeout|RxUnderrun|RxOverflow|RxFIFOOver
- |TxErr|TxOK|RxErr|RxOK)) == 0)
- break;
-
- if (status & (RxOK|RxUnderrun|RxOverflow|RxFIFOOver))/* Rx interrupt */
- rtl8129_rx(dev);
-
- if (status & (TxOK | TxErr)) {
- unsigned int dirty_tx = tp->dirty_tx;
-
- while (tp->cur_tx - dirty_tx > 0) {
- int entry = dirty_tx % NUM_TX_DESC;
- int txstatus = inl(ioaddr + TxStatus0 + entry*4);
-
- if ( ! (txstatus & (TxStatOK | TxUnderrun | TxAborted)))
- break; /* It still hasn't been Txed */
-
- /* Note: TxCarrierLost is always asserted at 100mbps. */
- if (txstatus & (TxOutOfWindow | TxAborted)) {
- /* There was an major error, log it. */
- if (rtl8129_debug > 1)
- printk(KERN_NOTICE"%s: Transmit error, Tx status %8.8x.\n",
- dev->name, txstatus);
- tp->stats.tx_errors++;
- if (txstatus&TxAborted) {
- tp->stats.tx_aborted_errors++;
- outl((TX_DMA_BURST<<8)|0x03000001, ioaddr + TxConfig);
- }
- if (txstatus&TxCarrierLost) tp->stats.tx_carrier_errors++;
- if (txstatus&TxOutOfWindow) tp->stats.tx_window_errors++;
-#ifdef ETHER_STATS
- if ((txstatus & 0x0f000000) == 0x0f000000)
- tp->stats.collisions16++;
-#endif
- } else {
- if (txstatus & TxUnderrun) {
- /* Add 64 to the Tx FIFO threshold. */
- if (tp->tx_flag < 0x00300000)
- tp->tx_flag += 0x00020000;
- tp->stats.tx_fifo_errors++;
- }
- tp->stats.collisions += (txstatus >> 24) & 15;
-#if LINUX_VERSION_CODE > 0x20119
- tp->stats.tx_bytes += txstatus & 0x7ff;
-#endif
- tp->stats.tx_packets++;
- }
-
- if (tp->tx_info[entry].mapping != 0) {
- pci_unmap_single(tp->pdev,
- tp->tx_info[entry].mapping,
- tp->tx_info[entry].skb->len);
- tp->tx_info[entry].mapping = 0;
- }
-
- /* Free the original skb. */
- dev_kfree_skb_irq(tp->tx_info[entry].skb);
- tp->tx_info[entry].skb = NULL;
- if (tp->tx_full) {
- /* The ring is no longer full, wake the queue. */
- tp->tx_full = 0;
- netif_wake_queue(dev);
- }
- dirty_tx++;
- }
-
-#ifndef final_version
- if (tp->cur_tx - dirty_tx > NUM_TX_DESC) {
- printk(KERN_ERR"%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
- dev->name, dirty_tx, tp->cur_tx, tp->tx_full);
- dirty_tx += NUM_TX_DESC;
- }
-#endif
- tp->dirty_tx = dirty_tx;
- }
-
- /* Check uncommon events with one test. */
- if (status & (PCIErr|PCSTimeout |RxUnderrun|RxOverflow|RxFIFOOver
- |TxErr|RxErr)) {
- if (rtl8129_debug > 2)
- printk(KERN_NOTICE"%s: Abnormal interrupt, status %8.8x.\n",
- dev->name, status);
-
- if (status == 0xffffffff)
- break;
- /* Update the error count. */
- tp->stats.rx_missed_errors += inl(ioaddr + RxMissed);
- outl(0, ioaddr + RxMissed);
-
- if ((status & RxUnderrun) && link_changed &&
- (rtl_cap_tbl[tp->chip_id] & HAS_LNK_CHNG)) {
- /* Really link-change on new chips. */
- int lpar = inw(ioaddr + NWayLPAR);
- int duplex = (lpar&0x0100)||(lpar & 0x01C0) == 0x0040;
- if (tp->full_duplex != duplex) {
- tp->full_duplex = duplex;
- outb(0xC0, ioaddr + Cfg9346);
- outb(tp->full_duplex ? 0x60 : 0x20, ioaddr + Config1);
- outb(0x00, ioaddr + Cfg9346);
- }
- status &= ~RxUnderrun;
- }
- if (status & (RxUnderrun | RxOverflow | RxErr | RxFIFOOver))
- tp->stats.rx_errors++;
-
- if (status & (PCSTimeout)) tp->stats.rx_length_errors++;
- if (status & (RxUnderrun|RxFIFOOver)) tp->stats.rx_fifo_errors++;
- if (status & RxOverflow) {
- tp->stats.rx_over_errors++;
- tp->cur_rx = inw(ioaddr + RxBufAddr) % RX_BUF_LEN;
- outw(tp->cur_rx - 16, ioaddr + RxBufPtr);
- }
- if (status & PCIErr) {
- u32 pci_cmd_status;
- pcibios_read_config_dword(tp->pci_bus, tp->pci_devfn,
- PCI_COMMAND, &pci_cmd_status);
-
- printk(KERN_ERR "%s: PCI Bus error %4.4x.\n",
- dev->name, pci_cmd_status);
- }
- }
- if (--boguscnt < 0) {
- printk(KERN_WARNING"%s: Too much work at interrupt, "
- "IntrStatus=0x%4.4x.\n",
- dev->name, status);
- /* Clear all interrupt sources. */
- outw(0xffff, ioaddr + IntrStatus);
- break;
- }
- } while (1);
-
- if (rtl8129_debug > 3)
- printk(KERN_DEBUG"%s: exiting interrupt, intr_status=%#4.4x.\n",
- dev->name, inl(ioaddr + IntrStatus));
- return;
-}
-
-/* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the
- field alignments and semantics. */
-static int rtl8129_rx(struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
- unsigned char *rx_ring = tp->rx_ring;
- u16 cur_rx = tp->cur_rx;
-
- if (rtl8129_debug > 4)
- printk(KERN_DEBUG"%s: In rtl8129_rx(), current %4.4x BufAddr %4.4x,"
- " free to %4.4x, Cmd %2.2x.\n",
- dev->name, cur_rx, inw(ioaddr + RxBufAddr),
- inw(ioaddr + RxBufPtr), inb(ioaddr + ChipCmd));
-
- while ((inb(ioaddr + ChipCmd) & 1) == 0) {
- int ring_offset = cur_rx % RX_BUF_LEN;
- u32 rx_status = le32_to_cpu(*(u32*)(rx_ring + ring_offset));
- int rx_size = rx_status >> 16;
-
- if (rtl8129_debug > 4) {
- int i;
- printk(KERN_DEBUG"%s: rtl8129_rx() status %4.4x, size %4.4x, cur %4.4x.\n",
- dev->name, rx_status, rx_size, cur_rx);
- printk(KERN_DEBUG"%s: Frame contents ", dev->name);
- for (i = 0; i < 70; i++)
- printk(" %2.2x", le32_to_cpu(rx_ring[ring_offset + i]));
- printk(".\n");
- }
- if (rx_status & RxTooLong) {
- if (rtl8129_debug > 0)
- printk(KERN_NOTICE"%s: Oversized Ethernet frame, status %4.4x!\n",
- dev->name, rx_status);
- tp->stats.rx_length_errors++;
- } else if (rx_status &
- (RxBadSymbol|RxRunt|RxTooLong|RxCRCErr|RxBadAlign)) {
- if (rtl8129_debug > 1)
- printk(KERN_DEBUG"%s: Ethernet frame had errors,"
- " status %4.4x.\n", dev->name, rx_status);
- tp->stats.rx_errors++;
- if (rx_status & (RxBadSymbol|RxBadAlign))
- tp->stats.rx_frame_errors++;
- if (rx_status & (RxRunt|RxTooLong)) tp->stats.rx_length_errors++;
- if (rx_status & RxCRCErr) tp->stats.rx_crc_errors++;
- /* Reset the receiver, based on RealTek recommendation. (Bug?) */
- tp->cur_rx = 0;
- outb(CmdTxEnb, ioaddr + ChipCmd);
- outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
- outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) |
- (RX_DMA_BURST<<8), ioaddr + RxConfig);
- } else {
- /* Malloc up new buffer, compatible with net-2e. */
- /* Omit the four octet CRC from the length. */
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(rx_size + 2);
- if (skb == NULL) {
- printk(KERN_WARNING"%s: Memory squeeze, deferring packet.\n",
- dev->name);
- /* We should check that some rx space is free.
- If not, free one and mark stats->rx_dropped++. */
- tp->stats.rx_dropped++;
- break;
- }
- skb->dev = dev;
- skb_reserve(skb, 2); /* 16 byte align the IP fields. */
- if (ring_offset+rx_size+4 > RX_BUF_LEN) {
- int semi_count = RX_BUF_LEN - ring_offset - 4;
- memcpy(skb_put(skb, semi_count), &rx_ring[ring_offset + 4],
- semi_count);
- memcpy(skb_put(skb, rx_size-semi_count), rx_ring,
- rx_size-semi_count);
- if (rtl8129_debug > 4) {
- int i;
- printk(KERN_DEBUG"%s: Frame wrap @%d",
- dev->name, semi_count);
- for (i = 0; i < 16; i++)
- printk(" %2.2x", le32_to_cpu(rx_ring[i]));
- printk(".\n");
- memset(rx_ring, 0xcc, 16);
- }
- } else {
-#if 1 /* USE_IP_COPYSUM */
- eth_copy_and_sum(skb, &rx_ring[ring_offset + 4],
- rx_size, 0);
- skb_put(skb, rx_size);
-#else
- memcpy(skb_put(skb, rx_size), &rx_ring[ring_offset + 4],
- rx_size);
-#endif
- }
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
-#if LINUX_VERSION_CODE > 0x20119
- tp->stats.rx_bytes += rx_size;
-#endif
- tp->stats.rx_packets++;
- }
-
- cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
- outw(cur_rx - 16, ioaddr + RxBufPtr);
- }
- if (rtl8129_debug > 4)
- printk(KERN_DEBUG"%s: Done rtl8129_rx(), current %4.4x BufAddr %4.4x,"
- " free to %4.4x, Cmd %2.2x.\n",
- dev->name, cur_rx, inw(ioaddr + RxBufAddr),
- inw(ioaddr + RxBufPtr), inb(ioaddr + ChipCmd));
- tp->cur_rx = cur_rx;
- return 0;
-}
-
-static int
-rtl8129_close(struct net_device *dev)
-{
- long ioaddr = dev->base_addr;
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- int i;
-
- netif_stop_queue(dev);
-
- if (rtl8129_debug > 1)
- printk(KERN_DEBUG"%s: Shutting down ethercard, status was 0x%4.4x.\n",
- dev->name, inw(ioaddr + IntrStatus));
-
- /* Disable interrupts by clearing the interrupt mask. */
- outw(0x0000, ioaddr + IntrMask);
-
- /* Stop the chip's Tx and Rx DMA processes. */
- outb(0x00, ioaddr + ChipCmd);
-
- /* Update the error counts. */
- tp->stats.rx_missed_errors += inl(ioaddr + RxMissed);
- outl(0, ioaddr + RxMissed);
-
- del_timer(&tp->timer);
-
- free_irq(dev->irq, dev);
-
- for (i = 0; i < NUM_TX_DESC; i++) {
- struct sk_buff *skb = tp->tx_info[i].skb;
- dma_addr_t mapping = tp->tx_info[i].mapping;
-
- if (skb) {
- if (mapping)
- pci_unmap_single(tp->pdev, mapping, skb->len);
- dev_kfree_skb(skb);
- }
- tp->tx_info[i].skb = NULL;
- tp->tx_info[i].mapping = 0;
- }
- pci_free_consistent(tp->pdev, RX_BUF_LEN + 16,
- tp->rx_ring, tp->rx_ring_dma);
- pci_free_consistent(tp->pdev, TX_BUF_SIZE * NUM_TX_DESC,
- tp->tx_bufs, tp->tx_bufs_dma);
- tp->rx_ring = NULL;
- tp->tx_bufs = NULL;
-
- /* Green! Put the chip in low-power mode. */
- outb(0xC0, ioaddr + Cfg9346);
- outb(0x03, ioaddr + Config1);
- outb('H', ioaddr + HltClk); /* 'R' would leave the clock running. */
-
- MOD_DEC_USE_COUNT;
-
- return 0;
-}
-
-static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- u16 *data = (u16 *)&rq->ifr_data;
-
- switch(cmd) {
- case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */
- data[0] = tp->phys[0] & 0x3f;
- /* Fall Through */
- case SIOCDEVPRIVATE+1: /* Read the specified MII register. */
- data[3] = mdio_read(dev, data[0], data[1] & 0x1f);
- return 0;
- case SIOCDEVPRIVATE+2: /* Write the specified MII register */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- mdio_write(dev, data[0], data[1] & 0x1f, data[2]);
- return 0;
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static struct enet_statistics *
-rtl8129_get_stats(struct net_device *dev)
-{
- struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv;
- long ioaddr = dev->base_addr;
-
- if (test_bit(LINK_STATE_START, &dev->state)) {
- tp->stats.rx_missed_errors += inl(ioaddr + RxMissed);
- outl(0, ioaddr + RxMissed);
- }
-
- return &tp->stats;
-}
-
-/* Set or clear the multicast filter for this adaptor.
- This routine is not state sensitive and need not be SMP locked. */
-
-static unsigned const ethernet_polynomial = 0x04c11db7U;
-static inline u32 ether_crc(int length, unsigned char *data)
-{
- int crc = -1;
-
- while (--length >= 0) {
- unsigned char current_octet = *data++;
- int bit;
- for (bit = 0; bit < 8; bit++, current_octet >>= 1)
- crc = (crc << 1) ^
- ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0);
- }
- return crc;
-}
-
-/* Bits in RxConfig. */
-enum rx_mode_bits {
- AcceptErr=0x20, AcceptRunt=0x10, AcceptBroadcast=0x08,
- AcceptMulticast=0x04, AcceptMyPhys=0x02, AcceptAllPhys=0x01,
-};
-
-static void set_rx_mode(struct net_device *dev)
-{
- long ioaddr = dev->base_addr;
- u32 mc_filter[2]; /* Multicast hash filter */
- int i, rx_mode;
-
- if (rtl8129_debug > 3)
- printk(KERN_DEBUG"%s: set_rx_mode(%4.4x) done -- Rx config %8.8x.\n",
- dev->name, dev->flags, inl(ioaddr + RxConfig));
-
- /* Note: do not reorder, GCC is clever about common statements. */
- if (dev->flags & IFF_PROMISC) {
- /* Unconditionally log net taps. */
- printk(KERN_NOTICE"%s: Promiscuous mode enabled.\n", dev->name);
- rx_mode = AcceptBroadcast|AcceptMulticast|AcceptMyPhys|AcceptAllPhys;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
- } else if ((dev->mc_count > multicast_filter_limit)
- || (dev->flags & IFF_ALLMULTI)) {
- /* Too many to filter perfectly -- accept all multicasts. */
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
- } else {
- struct dev_mc_list *mclist;
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
- mc_filter[1] = mc_filter[0] = 0;
- for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
- i++, mclist = mclist->next)
- set_bit(ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26, mc_filter);
- }
- /* We can safely update without stopping the chip. */
- outb(rx_mode, ioaddr + RxConfig);
- outl(mc_filter[0], ioaddr + MAR0 + 0);
- outl(mc_filter[1], ioaddr + MAR0 + 4);
- return;
-}
-
-#ifdef MODULE
-int init_module(void)
-{
- return rtl8139_probe();
-}
-
-void
-cleanup_module(void)
-{
- struct net_device *next_dev;
-
- /* No need to check MOD_IN_USE, as sys_delete_module() checks. */
- while (root_rtl8129_dev) {
- struct rtl8129_private *tp =
- (struct rtl8129_private *)root_rtl8129_dev->priv;
- next_dev = tp->next_module;
- unregister_netdev(root_rtl8129_dev);
- release_region(root_rtl8129_dev->base_addr,
- pci_tbl[tp->chip_id].io_size);
- kfree(tp);
- kfree(root_rtl8129_dev);
- root_rtl8129_dev = next_dev;
- }
-}
-
-#endif /* MODULE */
-
-/*
- * Local variables:
- * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c rtl8139.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
- * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c rtl8139.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
- * c-indent-level: 4
- * c-basic-offset: 4
- * tab-width: 4
- * End:
- */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)