diff options
Diffstat (limited to 'drivers/net/ethernet/i825xx/eepro.c')
| -rw-r--r-- | drivers/net/ethernet/i825xx/eepro.c | 1822 |
1 files changed, 1822 insertions, 0 deletions
diff --git a/drivers/net/ethernet/i825xx/eepro.c b/drivers/net/ethernet/i825xx/eepro.c new file mode 100644 index 000000000000..067c46069a11 --- /dev/null +++ b/drivers/net/ethernet/i825xx/eepro.c @@ -0,0 +1,1822 @@ +/* eepro.c: Intel EtherExpress Pro/10 device driver for Linux. */ +/* + Written 1994, 1995,1996 by Bao C. Ha. + + Copyright (C) 1994, 1995,1996 by Bao C. Ha. + + This software may be used and distributed + according to the terms of the GNU General Public License, + incorporated herein by reference. + + The author may be reached at bao.ha@srs.gov + or 418 Hastings Place, Martinez, GA 30907. + + Things remaining to do: + Better record keeping of errors. + Eliminate transmit interrupt to reduce overhead. + Implement "concurrent processing". I won't be doing it! + + Bugs: + + If you have a problem of not detecting the 82595 during a + reboot (warm reset), disable the FLASH memory should fix it. + This is a compatibility hardware problem. + + Versions: + 0.13b basic ethtool support (aris, 09/13/2004) + 0.13a in memory shortage, drop packets also in board + (Michael Westermann <mw@microdata-pos.de>, 07/30/2002) + 0.13 irq sharing, rewrote probe function, fixed a nasty bug in + hardware_send_packet and a major cleanup (aris, 11/08/2001) + 0.12d fixing a problem with single card detected as eight eth devices + fixing a problem with sudden drop in card performance + (chris (asdn@go2.pl), 10/29/2001) + 0.12c fixing some problems with old cards (aris, 01/08/2001) + 0.12b misc fixes (aris, 06/26/2000) + 0.12a port of version 0.12a of 2.2.x kernels to 2.3.x + (aris (aris@conectiva.com.br), 05/19/2000) + 0.11e some tweaks about multiple cards support (PdP, jul/aug 1999) + 0.11d added __initdata, __init stuff; call spin_lock_init + in eepro_probe1. Replaced "eepro" by dev->name. Augmented + the code protected by spin_lock in interrupt routine + (PdP, 12/12/1998) + 0.11c minor cleanup (PdP, RMC, 09/12/1998) + 0.11b Pascal Dupuis (dupuis@lei.ucl.ac.be): works as a module + under 2.1.xx. Debug messages are flagged as KERN_DEBUG to + avoid console flooding. Added locking at critical parts. Now + the dawn thing is SMP safe. + 0.11a Attempt to get 2.1.xx support up (RMC) + 0.11 Brian Candler added support for multiple cards. Tested as + a module, no idea if it works when compiled into kernel. + + 0.10e Rick Bressler notified me that ifconfig up;ifconfig down fails + because the irq is lost somewhere. Fixed that by moving + request_irq and free_irq to eepro_open and eepro_close respectively. + 0.10d Ugh! Now Wakeup works. Was seriously broken in my first attempt. + I'll need to find a way to specify an ioport other than + the default one in the PnP case. PnP definitively sucks. + And, yes, this is not the only reason. + 0.10c PnP Wakeup Test for 595FX. uncomment #define PnPWakeup; + to use. + 0.10b Should work now with (some) Pro/10+. At least for + me (and my two cards) it does. _No_ guarantee for + function with non-Pro/10+ cards! (don't have any) + (RMC, 9/11/96) + + 0.10 Added support for the Etherexpress Pro/10+. The + IRQ map was changed significantly from the old + pro/10. The new interrupt map was provided by + Rainer M. Canavan (Canavan@Zeus.cs.bonn.edu). + (BCH, 9/3/96) + + 0.09 Fixed a race condition in the transmit algorithm, + which causes crashes under heavy load with fast + pentium computers. The performance should also + improve a bit. The size of RX buffer, and hence + TX buffer, can also be changed via lilo or insmod. + (BCH, 7/31/96) + + 0.08 Implement 32-bit I/O for the 82595TX and 82595FX + based lan cards. Disable full-duplex mode if TPE + is not used. (BCH, 4/8/96) + + 0.07a Fix a stat report which counts every packet as a + heart-beat failure. (BCH, 6/3/95) + + 0.07 Modified to support all other 82595-based lan cards. + The IRQ vector of the EtherExpress Pro will be set + according to the value saved in the EEPROM. For other + cards, I will do autoirq_request() to grab the next + available interrupt vector. (BCH, 3/17/95) + + 0.06a,b Interim released. Minor changes in the comments and + print out format. (BCH, 3/9/95 and 3/14/95) + + 0.06 First stable release that I am comfortable with. (BCH, + 3/2/95) + + 0.05 Complete testing of multicast. (BCH, 2/23/95) + + 0.04 Adding multicast support. (BCH, 2/14/95) + + 0.03 First widely alpha release for public testing. + (BCH, 2/14/95) + +*/ + +static const char version[] = + "eepro.c: v0.13b 09/13/2004 aris@cathedrallabs.org\n"; + +#include <linux/module.h> + +/* + Sources: + + This driver wouldn't have been written without the availability + of the Crynwr's Lan595 driver source code. It helps me to + familiarize with the 82595 chipset while waiting for the Intel + documentation. I also learned how to detect the 82595 using + the packet driver's technique. + + This driver is written by cutting and pasting the skeleton.c driver + provided by Donald Becker. I also borrowed the EEPROM routine from + Donald Becker's 82586 driver. + + Datasheet for the Intel 82595 (including the TX and FX version). It + provides just enough info that the casual reader might think that it + documents the i82595. + + The User Manual for the 82595. It provides a lot of the missing + information. + +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/ethtool.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> + +#define DRV_NAME "eepro" +#define DRV_VERSION "0.13c" + +#define compat_dev_kfree_skb( skb, mode ) dev_kfree_skb( (skb) ) +/* I had reports of looong delays with SLOW_DOWN defined as udelay(2) */ +#define SLOW_DOWN inb(0x80) +/* udelay(2) */ +#define compat_init_data __initdata +enum iftype { AUI=0, BNC=1, TPE=2 }; + +/* First, a few definitions that the brave might change. */ +/* A zero-terminated list of I/O addresses to be probed. */ +static unsigned int eepro_portlist[] compat_init_data = + { 0x300, 0x210, 0x240, 0x280, 0x2C0, 0x200, 0x320, 0x340, 0x360, 0}; +/* note: 0x300 is default, the 595FX supports ALL IO Ports + from 0x000 to 0x3F0, some of which are reserved in PCs */ + +/* To try the (not-really PnP Wakeup: */ +/* +#define PnPWakeup +*/ + +/* use 0 for production, 1 for verification, >2 for debug */ +#ifndef NET_DEBUG +#define NET_DEBUG 0 +#endif +static unsigned int net_debug = NET_DEBUG; + +/* The number of low I/O ports used by the ethercard. */ +#define EEPRO_IO_EXTENT 16 + +/* Different 82595 chips */ +#define LAN595 0 +#define LAN595TX 1 +#define LAN595FX 2 +#define LAN595FX_10ISA 3 + +/* Information that need to be kept for each board. */ +struct eepro_local { + unsigned rx_start; + unsigned tx_start; /* start of the transmit chain */ + int tx_last; /* pointer to last packet in the transmit chain */ + unsigned tx_end; /* end of the transmit chain (plus 1) */ + int eepro; /* 1 for the EtherExpress Pro/10, + 2 for the EtherExpress Pro/10+, + 3 for the EtherExpress 10 (blue cards), + 0 for other 82595-based lan cards. */ + int version; /* a flag to indicate if this is a TX or FX + version of the 82595 chip. */ + int stepping; + + spinlock_t lock; /* Serializing lock */ + + unsigned rcv_ram; /* pre-calculated space for rx */ + unsigned xmt_ram; /* pre-calculated space for tx */ + unsigned char xmt_bar; + unsigned char xmt_lower_limit_reg; + unsigned char xmt_upper_limit_reg; + short xmt_lower_limit; + short xmt_upper_limit; + short rcv_lower_limit; + short rcv_upper_limit; + unsigned char eeprom_reg; + unsigned short word[8]; +}; + +/* The station (ethernet) address prefix, used for IDing the board. */ +#define SA_ADDR0 0x00 /* Etherexpress Pro/10 */ +#define SA_ADDR1 0xaa +#define SA_ADDR2 0x00 + +#define GetBit(x,y) ((x & (1<<y))>>y) + +/* EEPROM Word 0: */ +#define ee_PnP 0 /* Plug 'n Play enable bit */ +#define ee_Word1 1 /* Word 1? */ +#define ee_BusWidth 2 /* 8/16 bit */ +#define ee_FlashAddr 3 /* Flash Address */ +#define ee_FlashMask 0x7 /* Mask */ +#define ee_AutoIO 6 /* */ +#define ee_reserved0 7 /* =0! */ +#define ee_Flash 8 /* Flash there? */ +#define ee_AutoNeg 9 /* Auto Negotiation enabled? */ +#define ee_IO0 10 /* IO Address LSB */ +#define ee_IO0Mask 0x /*...*/ +#define ee_IO1 15 /* IO MSB */ + +/* EEPROM Word 1: */ +#define ee_IntSel 0 /* Interrupt */ +#define ee_IntMask 0x7 +#define ee_LI 3 /* Link Integrity 0= enabled */ +#define ee_PC 4 /* Polarity Correction 0= enabled */ +#define ee_TPE_AUI 5 /* PortSelection 1=TPE */ +#define ee_Jabber 6 /* Jabber prevention 0= enabled */ +#define ee_AutoPort 7 /* Auto Port Selection 1= Disabled */ +#define ee_SMOUT 8 /* SMout Pin Control 0= Input */ +#define ee_PROM 9 /* Flash EPROM / PROM 0=Flash */ +#define ee_reserved1 10 /* .. 12 =0! */ +#define ee_AltReady 13 /* Alternate Ready, 0=normal */ +#define ee_reserved2 14 /* =0! */ +#define ee_Duplex 15 + +/* Word2,3,4: */ +#define ee_IA5 0 /*bit start for individual Addr Byte 5 */ +#define ee_IA4 8 /*bit start for individual Addr Byte 5 */ +#define ee_IA3 0 /*bit start for individual Addr Byte 5 */ +#define ee_IA2 8 /*bit start for individual Addr Byte 5 */ +#define ee_IA1 0 /*bit start for individual Addr Byte 5 */ +#define ee_IA0 8 /*bit start for individual Addr Byte 5 */ + +/* Word 5: */ +#define ee_BNC_TPE 0 /* 0=TPE */ +#define ee_BootType 1 /* 00=None, 01=IPX, 10=ODI, 11=NDIS */ +#define ee_BootTypeMask 0x3 +#define ee_NumConn 3 /* Number of Connections 0= One or Two */ +#define ee_FlashSock 4 /* Presence of Flash Socket 0= Present */ +#define ee_PortTPE 5 +#define ee_PortBNC 6 +#define ee_PortAUI 7 +#define ee_PowerMgt 10 /* 0= disabled */ +#define ee_CP 13 /* Concurrent Processing */ +#define ee_CPMask 0x7 + +/* Word 6: */ +#define ee_Stepping 0 /* Stepping info */ +#define ee_StepMask 0x0F +#define ee_BoardID 4 /* Manucaturer Board ID, reserved */ +#define ee_BoardMask 0x0FFF + +/* Word 7: */ +#define ee_INT_TO_IRQ 0 /* int to IRQ Mapping = 0x1EB8 for Pro/10+ */ +#define ee_FX_INT2IRQ 0x1EB8 /* the _only_ mapping allowed for FX chips */ + +/*..*/ +#define ee_SIZE 0x40 /* total EEprom Size */ +#define ee_Checksum 0xBABA /* initial and final value for adding checksum */ + + +/* Card identification via EEprom: */ +#define ee_addr_vendor 0x10 /* Word offset for EISA Vendor ID */ +#define ee_addr_id 0x11 /* Word offset for Card ID */ +#define ee_addr_SN 0x12 /* Serial Number */ +#define ee_addr_CRC_8 0x14 /* CRC over last thee Bytes */ + + +#define ee_vendor_intel0 0x25 /* Vendor ID Intel */ +#define ee_vendor_intel1 0xD4 +#define ee_id_eepro10p0 0x10 /* ID for eepro/10+ */ +#define ee_id_eepro10p1 0x31 + +#define TX_TIMEOUT ((4*HZ)/10) + +/* Index to functions, as function prototypes. */ + +static int eepro_probe1(struct net_device *dev, int autoprobe); +static int eepro_open(struct net_device *dev); +static netdev_tx_t eepro_send_packet(struct sk_buff *skb, + struct net_device *dev); +static irqreturn_t eepro_interrupt(int irq, void *dev_id); +static void eepro_rx(struct net_device *dev); +static void eepro_transmit_interrupt(struct net_device *dev); +static int eepro_close(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); +static void eepro_tx_timeout (struct net_device *dev); + +static int read_eeprom(int ioaddr, int location, struct net_device *dev); +static int hardware_send_packet(struct net_device *dev, void *buf, short length); +static int eepro_grab_irq(struct net_device *dev); + +/* + Details of the i82595. + +You will need either the datasheet or the user manual to understand what +is going on here. The 82595 is very different from the 82586, 82593. + +The receive algorithm in eepro_rx() is just an implementation of the +RCV ring structure that the Intel 82595 imposes at the hardware level. +The receive buffer is set at 24K, and the transmit buffer is 8K. I +am assuming that the total buffer memory is 32K, which is true for the +Intel EtherExpress Pro/10. If it is less than that on a generic card, +the driver will be broken. + +The transmit algorithm in the hardware_send_packet() is similar to the +one in the eepro_rx(). The transmit buffer is a ring linked list. +I just queue the next available packet to the end of the list. In my +system, the 82595 is so fast that the list seems to always contain a +single packet. In other systems with faster computers and more congested +network traffics, the ring linked list should improve performance by +allowing up to 8K worth of packets to be queued. + +The sizes of the receive and transmit buffers can now be changed via lilo +or insmod. Lilo uses the appended line "ether=io,irq,debug,rx-buffer,eth0" +where rx-buffer is in KB unit. Modules uses the parameter mem which is +also in KB unit, for example "insmod io=io-address irq=0 mem=rx-buffer." +The receive buffer has to be more than 3K or less than 29K. Otherwise, +it is reset to the default of 24K, and, hence, 8K for the trasnmit +buffer (transmit-buffer = 32K - receive-buffer). + +*/ +#define RAM_SIZE 0x8000 + +#define RCV_HEADER 8 +#define RCV_DEFAULT_RAM 0x6000 + +#define XMT_HEADER 8 +#define XMT_DEFAULT_RAM (RAM_SIZE - RCV_DEFAULT_RAM) + +#define XMT_START_PRO RCV_DEFAULT_RAM +#define XMT_START_10 0x0000 +#define RCV_START_PRO 0x0000 +#define RCV_START_10 XMT_DEFAULT_RAM + +#define RCV_DONE 0x0008 +#define RX_OK 0x2000 +#define RX_ERROR 0x0d81 + +#define TX_DONE_BIT 0x0080 +#define TX_OK 0x2000 +#define CHAIN_BIT 0x8000 +#define XMT_STATUS 0x02 +#define XMT_CHAIN 0x04 +#define XMT_COUNT 0x06 + +#define BANK0_SELECT 0x00 +#define BANK1_SELECT 0x40 +#define BANK2_SELECT 0x80 + +/* Bank 0 registers */ +#define COMMAND_REG 0x00 /* Register 0 */ +#define MC_SETUP 0x03 +#define XMT_CMD 0x04 +#define DIAGNOSE_CMD 0x07 +#define RCV_ENABLE_CMD 0x08 +#define RCV_DISABLE_CMD 0x0a +#define STOP_RCV_CMD 0x0b +#define RESET_CMD 0x0e +#define POWER_DOWN_CMD 0x18 +#define RESUME_XMT_CMD 0x1c +#define SEL_RESET_CMD 0x1e +#define STATUS_REG 0x01 /* Register 1 */ +#define RX_INT 0x02 +#define TX_INT 0x04 +#define EXEC_STATUS 0x30 +#define ID_REG 0x02 /* Register 2 */ +#define R_ROBIN_BITS 0xc0 /* round robin counter */ +#define ID_REG_MASK 0x2c +#define ID_REG_SIG 0x24 +#define AUTO_ENABLE 0x10 +#define INT_MASK_REG 0x03 /* Register 3 */ +#define RX_STOP_MASK 0x01 +#define RX_MASK 0x02 +#define TX_MASK 0x04 +#define EXEC_MASK 0x08 +#define ALL_MASK 0x0f +#define IO_32_BIT 0x10 +#define RCV_BAR 0x04 /* The following are word (16-bit) registers */ +#define RCV_STOP 0x06 + +#define XMT_BAR_PRO 0x0a +#define XMT_BAR_10 0x0b + +#define HOST_ADDRESS_REG 0x0c +#define IO_PORT 0x0e +#define IO_PORT_32_BIT 0x0c + +/* Bank 1 registers */ +#define REG1 0x01 +#define WORD_WIDTH 0x02 +#define INT_ENABLE 0x80 +#define INT_NO_REG 0x02 +#define RCV_LOWER_LIMIT_REG 0x08 +#define RCV_UPPER_LIMIT_REG 0x09 + +#define XMT_LOWER_LIMIT_REG_PRO 0x0a +#define XMT_UPPER_LIMIT_REG_PRO 0x0b +#define XMT_LOWER_LIMIT_REG_10 0x0b +#define XMT_UPPER_LIMIT_REG_10 0x0a + +/* Bank 2 registers */ +#define XMT_Chain_Int 0x20 /* Interrupt at the end of the transmit chain */ +#define XMT_Chain_ErrStop 0x40 /* Interrupt at the end of the chain even if there are errors */ +#define RCV_Discard_BadFrame 0x80 /* Throw bad frames away, and continue to receive others */ +#define REG2 0x02 +#define PRMSC_Mode 0x01 +#define Multi_IA 0x20 +#define REG3 0x03 +#define TPE_BIT 0x04 +#define BNC_BIT 0x20 +#define REG13 0x0d +#define FDX 0x00 +#define A_N_ENABLE 0x02 + +#define I_ADD_REG0 0x04 +#define I_ADD_REG1 0x05 +#define I_ADD_REG2 0x06 +#define I_ADD_REG3 0x07 +#define I_ADD_REG4 0x08 +#define I_ADD_REG5 0x09 + +#define EEPROM_REG_PRO 0x0a +#define EEPROM_REG_10 0x0b + +#define EESK 0x01 +#define EECS 0x02 +#define EEDI 0x04 +#define EEDO 0x08 + +/* do a full reset */ +#define eepro_reset(ioaddr) outb(RESET_CMD, ioaddr) + +/* do a nice reset */ +#define eepro_sel_reset(ioaddr) { \ + outb(SEL_RESET_CMD, ioaddr); \ + SLOW_DOWN; \ + SLOW_DOWN; \ + } + +/* disable all interrupts */ +#define eepro_dis_int(ioaddr) outb(ALL_MASK, ioaddr + INT_MASK_REG) + +/* clear all interrupts */ +#define eepro_clear_int(ioaddr) outb(ALL_MASK, ioaddr + STATUS_REG) + +/* enable tx/rx */ +#define eepro_en_int(ioaddr) outb(ALL_MASK & ~(RX_MASK | TX_MASK), \ + ioaddr + INT_MASK_REG) + +/* enable exec event interrupt */ +#define eepro_en_intexec(ioaddr) outb(ALL_MASK & ~(EXEC_MASK), ioaddr + INT_MASK_REG) + +/* enable rx */ +#define eepro_en_rx(ioaddr) outb(RCV_ENABLE_CMD, ioaddr) + +/* disable rx */ +#define eepro_dis_rx(ioaddr) outb(RCV_DISABLE_CMD, ioaddr) + +/* switch bank */ +#define eepro_sw2bank0(ioaddr) outb(BANK0_SELECT, ioaddr) +#define eepro_sw2bank1(ioaddr) outb(BANK1_SELECT, ioaddr) +#define eepro_sw2bank2(ioaddr) outb(BANK2_SELECT, ioaddr) + +/* enable interrupt line */ +#define eepro_en_intline(ioaddr) outb(inb(ioaddr + REG1) | INT_ENABLE,\ + ioaddr + REG1) + +/* disable interrupt line */ +#define eepro_dis_intline(ioaddr) outb(inb(ioaddr + REG1) & 0x7f, \ + ioaddr + REG1); + +/* set diagnose flag */ +#define eepro_diag(ioaddr) outb(DIAGNOSE_CMD, ioaddr) + +/* ack for rx int */ +#define eepro_ack_rx(ioaddr) outb (RX_INT, ioaddr + STATUS_REG) + +/* ack for tx int */ +#define eepro_ack_tx(ioaddr) outb (TX_INT, ioaddr + STATUS_REG) + +/* a complete sel reset */ +#define eepro_complete_selreset(ioaddr) { \ + dev->stats.tx_errors++;\ + eepro_sel_reset(ioaddr);\ + lp->tx_end = \ + lp->xmt_lower_limit;\ + lp->tx_start = lp->tx_end;\ + lp->tx_last = 0;\ + dev->trans_start = jiffies;\ + netif_wake_queue(dev);\ + eepro_en_rx(ioaddr);\ + } + +/* Check for a network adaptor of this type, and return '0' if one exists. + If dev->base_addr == 0, probe all likely locations. + If dev->base_addr == 1, always return failure. + If dev->base_addr == 2, allocate space for the device and return success + (detachable devices only). + */ +static int __init do_eepro_probe(struct net_device *dev) +{ + int i; + int base_addr = dev->base_addr; + int irq = dev->irq; + +#ifdef PnPWakeup + /* XXXX for multiple cards should this only be run once? */ + + /* Wakeup: */ + #define WakeupPort 0x279 + #define WakeupSeq {0x6A, 0xB5, 0xDA, 0xED, 0xF6, 0xFB, 0x7D, 0xBE,\ + 0xDF, 0x6F, 0x37, 0x1B, 0x0D, 0x86, 0xC3, 0x61,\ + 0xB0, 0x58, 0x2C, 0x16, 0x8B, 0x45, 0xA2, 0xD1,\ + 0xE8, 0x74, 0x3A, 0x9D, 0xCE, 0xE7, 0x73, 0x43} + + { + unsigned short int WS[32]=WakeupSeq; + + if (request_region(WakeupPort, 2, "eepro wakeup")) { + if (net_debug>5) + printk(KERN_DEBUG "Waking UP\n"); + + outb_p(0,WakeupPort); + outb_p(0,WakeupPort); + for (i=0; i<32; i++) { + outb_p(WS[i],WakeupPort); + if (net_debug>5) printk(KERN_DEBUG ": %#x ",WS[i]); + } + + release_region(WakeupPort, 2); + } else + printk(KERN_WARNING "PnP wakeup region busy!\n"); + } +#endif + + if (base_addr > 0x1ff) /* Check a single specified location. */ + return eepro_probe1(dev, 0); + + else if (base_addr != 0) /* Don't probe at all. */ + return -ENXIO; + + for (i = 0; eepro_portlist[i]; i++) { + dev->base_addr = eepro_portlist[i]; + dev->irq = irq; + if (eepro_probe1(dev, 1) == 0) + return 0; + } + + return -ENODEV; +} + +#ifndef MODULE +struct net_device * __init eepro_probe(int unit) +{ + struct net_device *dev = alloc_etherdev(sizeof(struct eepro_local)); + int err; + + if (!dev) + return ERR_PTR(-ENODEV); + + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + + err = do_eepro_probe(dev); + if (err) + goto out; + return dev; +out: + free_netdev(dev); + return ERR_PTR(err); +} +#endif + +static void __init printEEPROMInfo(struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + int ioaddr = dev->base_addr; + unsigned short Word; + int i,j; + + j = ee_Checksum; + for (i = 0; i < 8; i++) + j += lp->word[i]; + for ( ; i < ee_SIZE; i++) + j += read_eeprom(ioaddr, i, dev); + + printk(KERN_DEBUG "Checksum: %#x\n",j&0xffff); + + Word = lp->word[0]; + printk(KERN_DEBUG "Word0:\n"); + printk(KERN_DEBUG " Plug 'n Pray: %d\n",GetBit(Word,ee_PnP)); + printk(KERN_DEBUG " Buswidth: %d\n",(GetBit(Word,ee_BusWidth)+1)*8 ); + printk(KERN_DEBUG " AutoNegotiation: %d\n",GetBit(Word,ee_AutoNeg)); + printk(KERN_DEBUG " IO Address: %#x\n", (Word>>ee_IO0)<<4); + + if (net_debug>4) { + Word = lp->word[1]; + printk(KERN_DEBUG "Word1:\n"); + printk(KERN_DEBUG " INT: %d\n", Word & ee_IntMask); + printk(KERN_DEBUG " LI: %d\n", GetBit(Word,ee_LI)); + printk(KERN_DEBUG " PC: %d\n", GetBit(Word,ee_PC)); + printk(KERN_DEBUG " TPE/AUI: %d\n", GetBit(Word,ee_TPE_AUI)); + printk(KERN_DEBUG " Jabber: %d\n", GetBit(Word,ee_Jabber)); + printk(KERN_DEBUG " AutoPort: %d\n", !GetBit(Word,ee_AutoPort)); + printk(KERN_DEBUG " Duplex: %d\n", GetBit(Word,ee_Duplex)); + } + + Word = lp->word[5]; + printk(KERN_DEBUG "Word5:\n"); + printk(KERN_DEBUG " BNC: %d\n",GetBit(Word,ee_BNC_TPE)); + printk(KERN_DEBUG " NumConnectors: %d\n",GetBit(Word,ee_NumConn)); + printk(KERN_DEBUG " Has "); + if (GetBit(Word,ee_PortTPE)) printk(KERN_DEBUG "TPE "); + if (GetBit(Word,ee_PortBNC)) printk(KERN_DEBUG "BNC "); + if (GetBit(Word,ee_PortAUI)) printk(KERN_DEBUG "AUI "); + printk(KERN_DEBUG "port(s)\n"); + + Word = lp->word[6]; + printk(KERN_DEBUG "Word6:\n"); + printk(KERN_DEBUG " Stepping: %d\n",Word & ee_StepMask); + printk(KERN_DEBUG " BoardID: %d\n",Word>>ee_BoardID); + + Word = lp->word[7]; + printk(KERN_DEBUG "Word7:\n"); + printk(KERN_DEBUG " INT to IRQ:\n"); + + for (i=0, j=0; i<15; i++) + if (GetBit(Word,i)) printk(KERN_DEBUG " INT%d -> IRQ %d;",j++,i); + + printk(KERN_DEBUG "\n"); +} + +/* function to recalculate the limits of buffer based on rcv_ram */ +static void eepro_recalc (struct net_device *dev) +{ + struct eepro_local * lp; + + lp = netdev_priv(dev); + lp->xmt_ram = RAM_SIZE - lp->rcv_ram; + + if (lp->eepro == LAN595FX_10ISA) { + lp->xmt_lower_limit = XMT_START_10; + lp->xmt_upper_limit = (lp->xmt_ram - 2); + lp->rcv_lower_limit = lp->xmt_ram; + lp->rcv_upper_limit = (RAM_SIZE - 2); + } + else { + lp->rcv_lower_limit = RCV_START_PRO; + lp->rcv_upper_limit = (lp->rcv_ram - 2); + lp->xmt_lower_limit = lp->rcv_ram; + lp->xmt_upper_limit = (RAM_SIZE - 2); + } +} + +/* prints boot-time info */ +static void __init eepro_print_info (struct net_device *dev) +{ + struct eepro_local * lp = netdev_priv(dev); + int i; + const char * ifmap[] = {"AUI", "10Base2", "10BaseT"}; + + i = inb(dev->base_addr + ID_REG); + printk(KERN_DEBUG " id: %#x ",i); + printk(" io: %#x ", (unsigned)dev->base_addr); + + switch (lp->eepro) { + case LAN595FX_10ISA: + printk("%s: Intel EtherExpress 10 ISA\n at %#x,", + dev->name, (unsigned)dev->base_addr); + break; + case LAN595FX: + printk("%s: Intel EtherExpress Pro/10+ ISA\n at %#x,", + dev->name, (unsigned)dev->base_addr); + break; + case LAN595TX: + printk("%s: Intel EtherExpress Pro/10 ISA at %#x,", + dev->name, (unsigned)dev->base_addr); + break; + case LAN595: + printk("%s: Intel 82595-based lan card at %#x,", + dev->name, (unsigned)dev->base_addr); + break; + } + + printk(" %pM", dev->dev_addr); + + if (net_debug > 3) + printk(KERN_DEBUG ", %dK RCV buffer", + (int)(lp->rcv_ram)/1024); + + if (dev->irq > 2) + printk(", IRQ %d, %s.\n", dev->irq, ifmap[dev->if_port]); + else + printk(", %s.\n", ifmap[dev->if_port]); + + if (net_debug > 3) { + i = lp->word[5]; + if (i & 0x2000) /* bit 13 of EEPROM word 5 */ + printk(KERN_DEBUG "%s: Concurrent Processing is " + "enabled but not used!\n", dev->name); + } + + /* Check the station address for the manufacturer's code */ + if (net_debug>3) + printEEPROMInfo(dev); +} + +static const struct ethtool_ops eepro_ethtool_ops; + +static const struct net_device_ops eepro_netdev_ops = { + .ndo_open = eepro_open, + .ndo_stop = eepro_close, + .ndo_start_xmit = eepro_send_packet, + .ndo_set_rx_mode = set_multicast_list, + .ndo_tx_timeout = eepro_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +}; + +/* This is the real probe routine. Linux has a history of friendly device + probes on the ISA bus. A good device probe avoids doing writes, and + verifies that the correct device exists and functions. */ + +static int __init eepro_probe1(struct net_device *dev, int autoprobe) +{ + unsigned short station_addr[3], id, counter; + int i; + struct eepro_local *lp; + int ioaddr = dev->base_addr; + int err; + + /* Grab the region so we can find another board if autoIRQ fails. */ + if (!request_region(ioaddr, EEPRO_IO_EXTENT, DRV_NAME)) { + if (!autoprobe) + printk(KERN_WARNING "EEPRO: io-port 0x%04x in use\n", + ioaddr); + return -EBUSY; + } + + /* Now, we are going to check for the signature of the + ID_REG (register 2 of bank 0) */ + + id = inb(ioaddr + ID_REG); + + if ((id & ID_REG_MASK) != ID_REG_SIG) + goto exit; + + /* We seem to have the 82595 signature, let's + play with its counter (last 2 bits of + register 2 of bank 0) to be sure. */ + + counter = id & R_ROBIN_BITS; + + if ((inb(ioaddr + ID_REG) & R_ROBIN_BITS) != (counter + 0x40)) + goto exit; + + lp = netdev_priv(dev); + memset(lp, 0, sizeof(struct eepro_local)); + lp->xmt_bar = XMT_BAR_PRO; + lp->xmt_lower_limit_reg = XMT_LOWER_LIMIT_REG_PRO; + lp->xmt_upper_limit_reg = XMT_UPPER_LIMIT_REG_PRO; + lp->eeprom_reg = EEPROM_REG_PRO; + spin_lock_init(&lp->lock); + + /* Now, get the ethernet hardware address from + the EEPROM */ + station_addr[0] = read_eeprom(ioaddr, 2, dev); + + /* FIXME - find another way to know that we've found + * an Etherexpress 10 + */ + if (station_addr[0] == 0x0000 || station_addr[0] == 0xffff) { + lp->eepro = LAN595FX_10ISA; + lp->eeprom_reg = EEPROM_REG_10; + lp->xmt_lower_limit_reg = XMT_LOWER_LIMIT_REG_10; + lp->xmt_upper_limit_reg = XMT_UPPER_LIMIT_REG_10; + lp->xmt_bar = XMT_BAR_10; + station_addr[0] = read_eeprom(ioaddr, 2, dev); + } + + /* get all words at once. will be used here and for ethtool */ + for (i = 0; i < 8; i++) { + lp->word[i] = read_eeprom(ioaddr, i, dev); + } + station_addr[1] = lp->word[3]; + station_addr[2] = lp->word[4]; + + if (!lp->eepro) { + if (lp->word[7] == ee_FX_INT2IRQ) + lp->eepro = 2; + else if (station_addr[2] == SA_ADDR1) + lp->eepro = 1; + } + + /* Fill in the 'dev' fields. */ + for (i=0; i < 6; i++) + dev->dev_addr[i] = ((unsigned char *) station_addr)[5-i]; + + /* RX buffer must be more than 3K and less than 29K */ + if (dev->mem_end < 3072 || dev->mem_end > 29696) + lp->rcv_ram = RCV_DEFAULT_RAM; + + /* calculate {xmt,rcv}_{lower,upper}_limit */ + eepro_recalc(dev); + + if (GetBit(lp->word[5], ee_BNC_TPE)) + dev->if_port = BNC; + else + dev->if_port = TPE; + + if (dev->irq < 2 && lp->eepro != 0) { + /* Mask off INT number */ + int count = lp->word[1] & 7; + unsigned irqMask = lp->word[7]; + + while (count--) + irqMask &= irqMask - 1; + + count = ffs(irqMask); + + if (count) + dev->irq = count - 1; + + if (dev->irq < 2) { + printk(KERN_ERR " Duh! illegal interrupt vector stored in EEPROM.\n"); + goto exit; + } else if (dev->irq == 2) { + dev->irq = 9; + } + } + + dev->netdev_ops = &eepro_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + dev->ethtool_ops = &eepro_ethtool_ops; + + /* print boot time info */ + eepro_print_info(dev); + + /* reset 82595 */ + eepro_reset(ioaddr); + + err = register_netdev(dev); + if (err) + goto err; + return 0; +exit: + err = -ENODEV; +err: + release_region(dev->base_addr, EEPRO_IO_EXTENT); + return err; +} + +/* Open/initialize the board. This is called (in the current kernel) + sometime after booting when the 'ifconfig' program is run. + + This routine should set everything up anew at each open, even + registers that "should" only need to be set once at boot, so that + there is non-reboot way to recover if something goes wrong. + */ + +static const char irqrmap[] = {-1,-1,0,1,-1,2,-1,-1,-1,0,3,4,-1,-1,-1,-1}; +static const char irqrmap2[] = {-1,-1,4,0,1,2,-1,3,-1,4,5,6,7,-1,-1,-1}; +static int eepro_grab_irq(struct net_device *dev) +{ + static const int irqlist[] = { 3, 4, 5, 7, 9, 10, 11, 12, 0 }; + const int *irqp = irqlist; + int temp_reg, ioaddr = dev->base_addr; + + eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */ + + /* Enable the interrupt line. */ + eepro_en_intline(ioaddr); + + /* be CAREFUL, BANK 0 now */ + eepro_sw2bank0(ioaddr); + + /* clear all interrupts */ + eepro_clear_int(ioaddr); + + /* Let EXEC event to interrupt */ + eepro_en_intexec(ioaddr); + + do { + eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */ + + temp_reg = inb(ioaddr + INT_NO_REG); + outb((temp_reg & 0xf8) | irqrmap[*irqp], ioaddr + INT_NO_REG); + + eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */ + + if (request_irq (*irqp, NULL, IRQF_SHARED, "bogus", dev) != EBUSY) { + unsigned long irq_mask; + /* Twinkle the interrupt, and check if it's seen */ + irq_mask = probe_irq_on(); + + eepro_diag(ioaddr); /* RESET the 82595 */ + mdelay(20); + + if (*irqp == probe_irq_off(irq_mask)) /* It's a good IRQ line */ + break; + + /* clear all interrupts */ + eepro_clear_int(ioaddr); + } + } while (*++irqp); + + eepro_sw2bank1(ioaddr); /* Switch back to Bank 1 */ + + /* Disable the physical interrupt line. */ + eepro_dis_intline(ioaddr); + + eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */ + + /* Mask all the interrupts. */ + eepro_dis_int(ioaddr); + + /* clear all interrupts */ + eepro_clear_int(ioaddr); + + return dev->irq; +} + +static int eepro_open(struct net_device *dev) +{ + unsigned short temp_reg, old8, old9; + int irqMask; + int i, ioaddr = dev->base_addr; + struct eepro_local *lp = netdev_priv(dev); + + if (net_debug > 3) + printk(KERN_DEBUG "%s: entering eepro_open routine.\n", dev->name); + + irqMask = lp->word[7]; + + if (lp->eepro == LAN595FX_10ISA) { + if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 3;\n"); + } + else if (irqMask == ee_FX_INT2IRQ) /* INT to IRQ Mask */ + { + lp->eepro = 2; /* Yes, an Intel EtherExpress Pro/10+ */ + if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 2;\n"); + } + + else if ((dev->dev_addr[0] == SA_ADDR0 && + dev->dev_addr[1] == SA_ADDR1 && + dev->dev_addr[2] == SA_ADDR2)) + { + lp->eepro = 1; + if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 1;\n"); + } /* Yes, an Intel EtherExpress Pro/10 */ + + else lp->eepro = 0; /* No, it is a generic 82585 lan card */ + + /* Get the interrupt vector for the 82595 */ + if (dev->irq < 2 && eepro_grab_irq(dev) == 0) { + printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq); + return -EAGAIN; + } + + if (request_irq(dev->irq , eepro_interrupt, 0, dev->name, dev)) { + printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq); + return -EAGAIN; + } + + /* Initialize the 82595. */ + + eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */ + temp_reg = inb(ioaddr + lp->eeprom_reg); + + lp->stepping = temp_reg >> 5; /* Get the stepping number of the 595 */ + + if (net_debug > 3) + printk(KERN_DEBUG "The stepping of the 82595 is %d\n", lp->stepping); + + if (temp_reg & 0x10) /* Check the TurnOff Enable bit */ + outb(temp_reg & 0xef, ioaddr + lp->eeprom_reg); + for (i=0; i < 6; i++) + outb(dev->dev_addr[i] , ioaddr + I_ADD_REG0 + i); + + temp_reg = inb(ioaddr + REG1); /* Setup Transmit Chaining */ + outb(temp_reg | XMT_Chain_Int | XMT_Chain_ErrStop /* and discard bad RCV frames */ + | RCV_Discard_BadFrame, ioaddr + REG1); + + temp_reg = inb(ioaddr + REG2); /* Match broadcast */ + outb(temp_reg | 0x14, ioaddr + REG2); + + temp_reg = inb(ioaddr + REG3); + outb(temp_reg & 0x3f, ioaddr + REG3); /* clear test mode */ + + /* Set the receiving mode */ + eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */ + + /* Set the interrupt vector */ + temp_reg = inb(ioaddr + INT_NO_REG); + if (lp->eepro == LAN595FX || lp->eepro == LAN595FX_10ISA) + outb((temp_reg & 0xf8) | irqrmap2[dev->irq], ioaddr + INT_NO_REG); + else outb((temp_reg & 0xf8) | irqrmap[dev->irq], ioaddr + INT_NO_REG); + + + temp_reg = inb(ioaddr + INT_NO_REG); + if (lp->eepro == LAN595FX || lp->eepro == LAN595FX_10ISA) + outb((temp_reg & 0xf0) | irqrmap2[dev->irq] | 0x08,ioaddr+INT_NO_REG); + else outb((temp_reg & 0xf8) | irqrmap[dev->irq], ioaddr + INT_NO_REG); + + if (net_debug > 3) + printk(KERN_DEBUG "eepro_open: content of INT Reg is %x\n", temp_reg); + + + /* Initialize the RCV and XMT upper and lower limits */ + outb(lp->rcv_lower_limit >> 8, ioaddr + RCV_LOWER_LIMIT_REG); + outb(lp->rcv_upper_limit >> 8, ioaddr + RCV_UPPER_LIMIT_REG); + outb(lp->xmt_lower_limit >> 8, ioaddr + lp->xmt_lower_limit_reg); + outb(lp->xmt_upper_limit >> 8, ioaddr + lp->xmt_upper_limit_reg); + + /* Enable the interrupt line. */ + eepro_en_intline(ioaddr); + + /* Switch back to Bank 0 */ + eepro_sw2bank0(ioaddr); + + /* Let RX and TX events to interrupt */ + eepro_en_int(ioaddr); + + /* clear all interrupts */ + eepro_clear_int(ioaddr); + + /* Initialize RCV */ + outw(lp->rcv_lower_limit, ioaddr + RCV_BAR); + lp->rx_start = lp->rcv_lower_limit; + outw(lp->rcv_upper_limit | 0xfe, ioaddr + RCV_STOP); + + /* Initialize XMT */ + outw(lp->xmt_lower_limit, ioaddr + lp->xmt_bar); + lp->tx_start = lp->tx_end = lp->xmt_lower_limit; + lp->tx_last = 0; + + /* Check for the i82595TX and i82595FX */ + old8 = inb(ioaddr + 8); + outb(~old8, ioaddr + 8); + + if ((temp_reg = inb(ioaddr + 8)) == old8) { + if (net_debug > 3) + printk(KERN_DEBUG "i82595 detected!\n"); + lp->version = LAN595; + } + else { + lp->version = LAN595TX; + outb(old8, ioaddr + 8); + old9 = inb(ioaddr + 9); + + if (irqMask==ee_FX_INT2IRQ) { + if (net_debug > 3) { + printk(KERN_DEBUG "IrqMask: %#x\n",irqMask); + printk(KERN_DEBUG "i82595FX detected!\n"); + } + lp->version = LAN595FX; + outb(old9, ioaddr + 9); + if (dev->if_port != TPE) { /* Hopefully, this will fix the + problem of using Pentiums and + pro/10 w/ BNC. */ + eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */ + temp_reg = inb(ioaddr + REG13); + /* disable the full duplex mode since it is not + applicable with the 10Base2 cable. */ + outb(temp_reg & ~(FDX | A_N_ENABLE), REG13); + eepro_sw2bank0(ioaddr); /* be CAREFUL, BANK 0 now */ + } + } + else if (net_debug > 3) { + printk(KERN_DEBUG "temp_reg: %#x ~old9: %#x\n",temp_reg,((~old9)&0xff)); + printk(KERN_DEBUG "i82595TX detected!\n"); + } + } + + eepro_sel_reset(ioaddr); + + netif_start_queue(dev); + + if (net_debug > 3) + printk(KERN_DEBUG "%s: exiting eepro_open routine.\n", dev->name); + + /* enabling rx */ + eepro_en_rx(ioaddr); + + return 0; +} + +static void eepro_tx_timeout (struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + int ioaddr = dev->base_addr; + + /* if (net_debug > 1) */ + printk (KERN_ERR "%s: transmit timed out, %s?\n", dev->name, + "network cable problem"); + /* This is not a duplicate. One message for the console, + one for the log file */ + printk (KERN_DEBUG "%s: transmit timed out, %s?\n", dev->name, + "network cable problem"); + eepro_complete_selreset(ioaddr); +} + + +static netdev_tx_t eepro_send_packet(struct sk_buff *skb, + struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + unsigned long flags; + int ioaddr = dev->base_addr; + short length = skb->len; + + if (net_debug > 5) + printk(KERN_DEBUG "%s: entering eepro_send_packet routine.\n", dev->name); + + if (length < ETH_ZLEN) { + if (skb_padto(skb, ETH_ZLEN)) + return NETDEV_TX_OK; + length = ETH_ZLEN; + } + netif_stop_queue (dev); + + eepro_dis_int(ioaddr); + spin_lock_irqsave(&lp->lock, flags); + + { + unsigned char *buf = skb->data; + + if (hardware_send_packet(dev, buf, length)) + /* we won't wake queue here because we're out of space */ + dev->stats.tx_dropped++; + else { + dev->stats.tx_bytes+=skb->len; + netif_wake_queue(dev); + } + + } + + dev_kfree_skb (skb); + + /* You might need to clean up and record Tx statistics here. */ + /* dev->stats.tx_aborted_errors++; */ + + if (net_debug > 5) + printk(KERN_DEBUG "%s: exiting eepro_send_packet routine.\n", dev->name); + + eepro_en_int(ioaddr); + spin_unlock_irqrestore(&lp->lock, flags); + + return NETDEV_TX_OK; +} + + +/* The typical workload of the driver: + Handle the network interface interrupts. */ + +static irqreturn_t +eepro_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct eepro_local *lp; + int ioaddr, status, boguscount = 20; + int handled = 0; + + lp = netdev_priv(dev); + + spin_lock(&lp->lock); + + if (net_debug > 5) + printk(KERN_DEBUG "%s: entering eepro_interrupt routine.\n", dev->name); + + ioaddr = dev->base_addr; + + while (((status = inb(ioaddr + STATUS_REG)) & (RX_INT|TX_INT)) && (boguscount--)) + { + handled = 1; + if (status & RX_INT) { + if (net_debug > 4) + printk(KERN_DEBUG "%s: packet received interrupt.\n", dev->name); + + eepro_dis_int(ioaddr); + + /* Get the received packets */ + eepro_ack_rx(ioaddr); + eepro_rx(dev); + + eepro_en_int(ioaddr); + } + if (status & TX_INT) { + if (net_debug > 4) + printk(KERN_DEBUG "%s: packet transmit interrupt.\n", dev->name); + + + eepro_dis_int(ioaddr); + + /* Process the status of transmitted packets */ + eepro_ack_tx(ioaddr); + eepro_transmit_interrupt(dev); + + eepro_en_int(ioaddr); + } + } + + if (net_debug > 5) + printk(KERN_DEBUG "%s: exiting eepro_interrupt routine.\n", dev->name); + + spin_unlock(&lp->lock); + return IRQ_RETVAL(handled); +} + +static int eepro_close(struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + int ioaddr = dev->base_addr; + short temp_reg; + + netif_stop_queue(dev); + + eepro_sw2bank1(ioaddr); /* Switch back to Bank 1 */ + + /* Disable the physical interrupt line. */ + temp_reg = inb(ioaddr + REG1); + outb(temp_reg & 0x7f, ioaddr + REG1); + + eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */ + + /* Flush the Tx and disable Rx. */ + outb(STOP_RCV_CMD, ioaddr); + lp->tx_start = lp->tx_end = lp->xmt_lower_limit; + lp->tx_last = 0; + + /* Mask all the interrupts. */ + eepro_dis_int(ioaddr); + + /* clear all interrupts */ + eepro_clear_int(ioaddr); + + /* Reset the 82595 */ + eepro_reset(ioaddr); + + /* release the interrupt */ + free_irq(dev->irq, dev); + + /* Update the statistics here. What statistics? */ + + return 0; +} + +/* Set or clear the multicast filter for this adaptor. + */ +static void +set_multicast_list(struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + short ioaddr = dev->base_addr; + unsigned short mode; + struct netdev_hw_addr *ha; + int mc_count = netdev_mc_count(dev); + + if (dev->flags&(IFF_ALLMULTI|IFF_PROMISC) || mc_count > 63) + { + eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */ + mode = inb(ioaddr + REG2); + outb(mode | PRMSC_Mode, ioaddr + REG2); + mode = inb(ioaddr + REG3); + outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */ + eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */ + } + + else if (mc_count == 0) + { + eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */ + mode = inb(ioaddr + REG2); + outb(mode & 0xd6, ioaddr + REG2); /* Turn off Multi-IA and PRMSC_Mode bits */ + mode = inb(ioaddr + REG3); + outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */ + eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */ + } + + else + { + unsigned short status, *eaddrs; + int i, boguscount = 0; + + /* Disable RX and TX interrupts. Necessary to avoid + corruption of the HOST_ADDRESS_REG by interrupt + service routines. */ + eepro_dis_int(ioaddr); + + eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */ + mode = inb(ioaddr + REG2); + outb(mode | Multi_IA, ioaddr + REG2); + mode = inb(ioaddr + REG3); + outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */ + eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */ + outw(lp->tx_end, ioaddr + HOST_ADDRESS_REG); + outw(MC_SETUP, ioaddr + IO_PORT); + outw(0, ioaddr + IO_PORT); + outw(0, ioaddr + IO_PORT); + outw(6 * (mc_count + 1), ioaddr + IO_PORT); + + netdev_for_each_mc_addr(ha, dev) { + eaddrs = (unsigned short *) ha->addr; + outw(*eaddrs++, ioaddr + IO_PORT); + outw(*eaddrs++, ioaddr + IO_PORT); + outw(*eaddrs++, ioaddr + IO_PORT); + } + + eaddrs = (unsigned short *) dev->dev_addr; + outw(eaddrs[0], ioaddr + IO_PORT); + outw(eaddrs[1], ioaddr + IO_PORT); + outw(eaddrs[2], ioaddr + IO_PORT); + outw(lp->tx_end, ioaddr + lp->xmt_bar); + outb(MC_SETUP, ioaddr); + + /* Update the transmit queue */ + i = lp->tx_end + XMT_HEADER + 6 * (mc_count + 1); + + if (lp->tx_start != lp->tx_end) + { + /* update the next address and the chain bit in the + last packet */ + outw(lp->tx_last + XMT_CHAIN, ioaddr + HOST_ADDRESS_REG); + outw(i, ioaddr + IO_PORT); + outw(lp->tx_last + XMT_COUNT, ioaddr + HOST_ADDRESS_REG); + status = inw(ioaddr + IO_PORT); + outw(status | CHAIN_BIT, ioaddr + IO_PORT); + lp->tx_end = i ; + } + else { + lp->tx_start = lp->tx_end = i ; + } + + /* Acknowledge that the MC setup is done */ + do { /* We should be doing this in the eepro_interrupt()! */ + SLOW_DOWN; + SLOW_DOWN; + if (inb(ioaddr + STATUS_REG) & 0x08) + { + i = inb(ioaddr); + outb(0x08, ioaddr + STATUS_REG); + + if (i & 0x20) { /* command ABORTed */ + printk(KERN_NOTICE "%s: multicast setup failed.\n", + dev->name); + break; + } else if ((i & 0x0f) == 0x03) { /* MC-Done */ + printk(KERN_DEBUG "%s: set Rx mode to %d address%s.\n", + dev->name, mc_count, + mc_count > 1 ? "es":""); + break; + } + } + } while (++boguscount < 100); + + /* Re-enable RX and TX interrupts */ + eepro_en_int(ioaddr); + } + if (lp->eepro == LAN595FX_10ISA) { + eepro_complete_selreset(ioaddr); + } + else + eepro_en_rx(ioaddr); +} + +/* The horrible routine to read a word from the serial EEPROM. */ +/* IMPORTANT - the 82595 will be set to Bank 0 after the eeprom is read */ + +/* The delay between EEPROM clock transitions. */ +#define eeprom_delay() { udelay(40); } +#define EE_READ_CMD (6 << 6) + +static int +read_eeprom(int ioaddr, int location, struct net_device *dev) +{ + int i; + unsigned short retval = 0; + struct eepro_local *lp = netdev_priv(dev); + short ee_addr = ioaddr + lp->eeprom_reg; + int read_cmd = location | EE_READ_CMD; + short ctrl_val = EECS ; + + /* XXXX - black magic */ + eepro_sw2bank1(ioaddr); + outb(0x00, ioaddr + STATUS_REG); + /* XXXX - black magic */ + + eepro_sw2bank2(ioaddr); + outb(ctrl_val, ee_addr); + + /* Shift the read command bits out. */ + for (i = 8; i >= 0; i--) { + short outval = (read_cmd & (1 << i)) ? ctrl_val | EEDI + : ctrl_val; + outb(outval, ee_addr); + outb(outval | EESK, ee_addr); /* EEPROM clock tick. */ + eeprom_delay(); + outb(outval, ee_addr); /* Finish EEPROM a clock tick. */ + eeprom_delay(); + } + outb(ctrl_val, ee_addr); + + for (i = 16; i > 0; i--) { + outb(ctrl_val | EESK, ee_addr); eeprom_delay(); + retval = (retval << 1) | ((inb(ee_addr) & EEDO) ? 1 : 0); + outb(ctrl_val, ee_addr); eeprom_delay(); + } + + /* Terminate the EEPROM access. */ + ctrl_val &= ~EECS; + outb(ctrl_val | EESK, ee_addr); + eeprom_delay(); + outb(ctrl_val, ee_addr); + eeprom_delay(); + eepro_sw2bank0(ioaddr); + return retval; +} + +static int +hardware_send_packet(struct net_device *dev, void *buf, short length) +{ + struct eepro_local *lp = netdev_priv(dev); + short ioaddr = dev->base_addr; + unsigned status, tx_available, last, end; + + if (net_debug > 5) + printk(KERN_DEBUG "%s: entering hardware_send_packet routine.\n", dev->name); + + /* determine how much of the transmit buffer space is available */ + if (lp->tx_end > lp->tx_start) + tx_available = lp->xmt_ram - (lp->tx_end - lp->tx_start); + else if (lp->tx_end < lp->tx_start) + tx_available = lp->tx_start - lp->tx_end; + else tx_available = lp->xmt_ram; + + if (((((length + 3) >> 1) << 1) + 2*XMT_HEADER) >= tx_available) { + /* No space available ??? */ + return 1; + } + + last = lp->tx_end; + end = last + (((length + 3) >> 1) << 1) + XMT_HEADER; + + if (end >= lp->xmt_upper_limit + 2) { /* the transmit buffer is wrapped around */ + if ((lp->xmt_upper_limit + 2 - last) <= XMT_HEADER) { + /* Arrrr!!!, must keep the xmt header together, + several days were lost to chase this one down. */ + last = lp->xmt_lower_limit; + end = last + (((length + 3) >> 1) << 1) + XMT_HEADER; + } + else end = lp->xmt_lower_limit + (end - + lp->xmt_upper_limit + 2); + } + + outw(last, ioaddr + HOST_ADDRESS_REG); + outw(XMT_CMD, ioaddr + IO_PORT); + outw(0, ioaddr + IO_PORT); + outw(end, ioaddr + IO_PORT); + outw(length, ioaddr + IO_PORT); + + if (lp->version == LAN595) + outsw(ioaddr + IO_PORT, buf, (length + 3) >> 1); + else { /* LAN595TX or LAN595FX, capable of 32-bit I/O processing */ + unsigned short temp = inb(ioaddr + INT_MASK_REG); + outb(temp | IO_32_BIT, ioaddr + INT_MASK_REG); + outsl(ioaddr + IO_PORT_32_BIT, buf, (length + 3) >> 2); + outb(temp & ~(IO_32_BIT), ioaddr + INT_MASK_REG); + } + + /* A dummy read to flush the DRAM write pipeline */ + status = inw(ioaddr + IO_PORT); + + if (lp->tx_start == lp->tx_end) { + outw(last, ioaddr + lp->xmt_bar); + outb(XMT_CMD, ioaddr); + lp->tx_start = last; /* I don't like to change tx_start here */ + } + else { + /* update the next address and the chain bit in the + last packet */ + + if (lp->tx_end != last) { + outw(lp->tx_last + XMT_CHAIN, ioaddr + HOST_ADDRESS_REG); + outw(last, ioaddr + IO_PORT); + } + + outw(lp->tx_last + XMT_COUNT, ioaddr + HOST_ADDRESS_REG); + status = inw(ioaddr + IO_PORT); + outw(status | CHAIN_BIT, ioaddr + IO_PORT); + + /* Continue the transmit command */ + outb(RESUME_XMT_CMD, ioaddr); + } + + lp->tx_last = last; + lp->tx_end = end; + + if (net_debug > 5) + printk(KERN_DEBUG "%s: exiting hardware_send_packet routine.\n", dev->name); + + return 0; +} + +static void +eepro_rx(struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + short ioaddr = dev->base_addr; + short boguscount = 20; + short rcv_car = lp->rx_start; + unsigned rcv_event, rcv_status, rcv_next_frame, rcv_size; + + if (net_debug > 5) + printk(KERN_DEBUG "%s: entering eepro_rx routine.\n", dev->name); + + /* Set the read pointer to the start of the RCV */ + outw(rcv_car, ioaddr + HOST_ADDRESS_REG); + + rcv_event = inw(ioaddr + IO_PORT); + + while (rcv_event == RCV_DONE) { + + rcv_status = inw(ioaddr + IO_PORT); + rcv_next_frame = inw(ioaddr + IO_PORT); + rcv_size = inw(ioaddr + IO_PORT); + + if ((rcv_status & (RX_OK | RX_ERROR)) == RX_OK) { + + /* Malloc up new buffer. */ + struct sk_buff *skb; + + dev->stats.rx_bytes+=rcv_size; + rcv_size &= 0x3fff; + skb = dev_alloc_skb(rcv_size+5); + if (skb == NULL) { + printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); + dev->stats.rx_dropped++; + rcv_car = lp->rx_start + RCV_HEADER + rcv_size; + lp->rx_start = rcv_next_frame; + outw(rcv_next_frame, ioaddr + HOST_ADDRESS_REG); + + break; + } + skb_reserve(skb,2); + + if (lp->version == LAN595) + insw(ioaddr+IO_PORT, skb_put(skb,rcv_size), (rcv_size + 3) >> 1); + else { /* LAN595TX or LAN595FX, capable of 32-bit I/O processing */ + unsigned short temp = inb(ioaddr + INT_MASK_REG); + outb(temp | IO_32_BIT, ioaddr + INT_MASK_REG); + insl(ioaddr+IO_PORT_32_BIT, skb_put(skb,rcv_size), + (rcv_size + 3) >> 2); + outb(temp & ~(IO_32_BIT), ioaddr + INT_MASK_REG); + } + + skb->protocol = eth_type_trans(skb,dev); + netif_rx(skb); + dev->stats.rx_packets++; + } + + else { /* Not sure will ever reach here, + I set the 595 to discard bad received frames */ + dev->stats.rx_errors++; + + if (rcv_status & 0x0100) + dev->stats.rx_over_errors++; + + else if (rcv_status & 0x0400) + dev->stats.rx_frame_errors++; + + else if (rcv_status & 0x0800) + dev->stats.rx_crc_errors++; + + printk(KERN_DEBUG "%s: event = %#x, status = %#x, next = %#x, size = %#x\n", + dev->name, rcv_event, rcv_status, rcv_next_frame, rcv_size); + } + + if (rcv_status & 0x1000) + dev->stats.rx_length_errors++; + + rcv_car = lp->rx_start + RCV_HEADER + rcv_size; + lp->rx_start = rcv_next_frame; + + if (--boguscount == 0) + break; + + outw(rcv_next_frame, ioaddr + HOST_ADDRESS_REG); + rcv_event = inw(ioaddr + IO_PORT); + + } + if (rcv_car == 0) + rcv_car = lp->rcv_upper_limit | 0xff; + + outw(rcv_car - 1, ioaddr + RCV_STOP); + + if (net_debug > 5) + printk(KERN_DEBUG "%s: exiting eepro_rx routine.\n", dev->name); +} + +static void +eepro_transmit_interrupt(struct net_device *dev) +{ + struct eepro_local *lp = netdev_priv(dev); + short ioaddr = dev->base_addr; + short boguscount = 25; + short xmt_status; + + while ((lp->tx_start != lp->tx_end) && boguscount--) { + + outw(lp->tx_start, ioaddr + HOST_ADDRESS_REG); + xmt_status = inw(ioaddr+IO_PORT); + + if (!(xmt_status & TX_DONE_BIT)) + break; + + xmt_status = inw(ioaddr+IO_PORT); + lp->tx_start = inw(ioaddr+IO_PORT); + + netif_wake_queue (dev); + + if (xmt_status & TX_OK) + dev->stats.tx_packets++; + else { + dev->stats.tx_errors++; + if (xmt_status & 0x0400) { + dev->stats.tx_carrier_errors++; + printk(KERN_DEBUG "%s: carrier error\n", + dev->name); + printk(KERN_DEBUG "%s: XMT status = %#x\n", + dev->name, xmt_status); + } + else { + printk(KERN_DEBUG "%s: XMT status = %#x\n", + dev->name, xmt_status); + printk(KERN_DEBUG "%s: XMT status = %#x\n", + dev->name, xmt_status); + } + } + if (xmt_status & 0x000f) { + dev->stats.collisions += (xmt_status & 0x000f); + } + + if ((xmt_status & 0x0040) == 0x0) { + dev->stats.tx_heartbeat_errors++; + } + } +} + +static int eepro_ethtool_get_settings(struct net_device *dev, + struct ethtool_cmd *cmd) +{ + struct eepro_local *lp = netdev_priv(dev); + + cmd->supported = SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_Autoneg; + cmd->advertising = ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_Autoneg; + + if (GetBit(lp->word[5], ee_PortTPE)) { + cmd->supported |= SUPPORTED_TP; + cmd->advertising |= ADVERTISED_TP; + } + if (GetBit(lp->word[5], ee_PortBNC)) { + cmd->supported |= SUPPORTED_BNC; + cmd->advertising |= ADVERTISED_BNC; + } + if (GetBit(lp->word[5], ee_PortAUI)) { + cmd->supported |= SUPPORTED_AUI; + cmd->advertising |= ADVERTISED_AUI; + } + + ethtool_cmd_speed_set(cmd, SPEED_10); + + if (dev->if_port == TPE && lp->word[1] & ee_Duplex) { + cmd->duplex = DUPLEX_FULL; + } + else { + cmd->duplex = DUPLEX_HALF; + } + + cmd->port = dev->if_port; + cmd->phy_address = dev->base_addr; + cmd->transceiver = XCVR_INTERNAL; + + if (lp->word[0] & ee_AutoNeg) { + cmd->autoneg = 1; + } + + return 0; +} + +static void eepro_ethtool_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *drvinfo) +{ + strcpy(drvinfo->driver, DRV_NAME); + strcpy(drvinfo->version, DRV_VERSION); + sprintf(drvinfo->bus_info, "ISA 0x%lx", dev->base_addr); +} + +static const struct ethtool_ops eepro_ethtool_ops = { + .get_settings = eepro_ethtool_get_settings, + .get_drvinfo = eepro_ethtool_get_drvinfo, +}; + +#ifdef MODULE + +#define MAX_EEPRO 8 +static struct net_device *dev_eepro[MAX_EEPRO]; + +static int io[MAX_EEPRO] = { + [0 ... MAX_EEPRO-1] = -1 +}; +static int irq[MAX_EEPRO]; +static int mem[MAX_EEPRO] = { /* Size of the rx buffer in KB */ + [0 ... MAX_EEPRO-1] = RCV_DEFAULT_RAM/1024 +}; +static int autodetect; + +static int n_eepro; +/* For linux 2.1.xx */ + +MODULE_AUTHOR("Pascal Dupuis and others"); +MODULE_DESCRIPTION("Intel i82595 ISA EtherExpressPro10/10+ driver"); +MODULE_LICENSE("GPL"); + +module_param_array(io, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param_array(mem, int, NULL, 0); +module_param(autodetect, int, 0); +MODULE_PARM_DESC(io, "EtherExpress Pro/10 I/O base address(es)"); +MODULE_PARM_DESC(irq, "EtherExpress Pro/10 IRQ number(s)"); +MODULE_PARM_DESC(mem, "EtherExpress Pro/10 Rx buffer size(es) in kB (3-29)"); +MODULE_PARM_DESC(autodetect, "EtherExpress Pro/10 force board(s) detection (0-1)"); + +int __init init_module(void) +{ + struct net_device *dev; + int i; + if (io[0] == -1 && autodetect == 0) { + printk(KERN_WARNING "eepro_init_module: Probe is very dangerous in ISA boards!\n"); + printk(KERN_WARNING "eepro_init_module: Please add \"autodetect=1\" to force probe\n"); + return -ENODEV; + } + else if (autodetect) { + /* if autodetect is set then we must force detection */ + for (i = 0; i < MAX_EEPRO; i++) { + io[i] = 0; + } + + printk(KERN_INFO "eepro_init_module: Auto-detecting boards (May God protect us...)\n"); + } + + for (i = 0; i < MAX_EEPRO && io[i] != -1; i++) { + dev = alloc_etherdev(sizeof(struct eepro_local)); + if (!dev) + break; + + dev->mem_end = mem[i]; + dev->base_addr = io[i]; + dev->irq = irq[i]; + + if (do_eepro_probe(dev) == 0) { + dev_eepro[n_eepro++] = dev; + continue; + } + free_netdev(dev); + break; + } + + if (n_eepro) + printk(KERN_INFO "%s", version); + + return n_eepro ? 0 : -ENODEV; +} + +void __exit +cleanup_module(void) +{ + int i; + + for (i=0; i<n_eepro; i++) { + struct net_device *dev = dev_eepro[i]; + unregister_netdev(dev); + release_region(dev->base_addr, EEPRO_IO_EXTENT); + free_netdev(dev); + } +} +#endif /* MODULE */ |