/* 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 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: 0.11e 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: v0.11d 08/12/1998 dupuis@lei.ucl.ac.be\n"; #include /* 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 /* 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 /* Information that need to be kept for each board. */ struct eepro_local { struct enet_statistics stats; 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+, 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 */ }; /* 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) /* 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 40 /* Index to functions, as function prototypes. */ extern int eepro_probe(struct net_device *dev); static int eepro_probe1(struct net_device *dev, short ioaddr); static int eepro_open(struct net_device *dev); static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev); static void eepro_interrupt(int irq, void *dev_id, struct pt_regs *regs); 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 struct enet_statistics *eepro_get_stats(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); static void 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_RAM 0x6000 /* 24KB default for RCV buffer */ #define RCV_LOWER_LIMIT 0x00 /* 0x0000 */ /* #define RCV_UPPER_LIMIT ((RCV_RAM - 2) >> 8) */ /* 0x5ffe */ #define RCV_UPPER_LIMIT (((rcv_ram) - 2) >> 8) /* #define XMT_RAM (RAM_SIZE - RCV_RAM) */ /* 8KB for XMT buffer */ #define XMT_RAM (RAM_SIZE - (rcv_ram)) /* 8KB for XMT buffer */ /* #define XMT_LOWER_LIMIT (RCV_RAM >> 8) */ /* 0x6000 */ #define XMT_LOWER_LIMIT ((rcv_ram) >> 8) #define XMT_UPPER_LIMIT ((RAM_SIZE - 2) >> 8) /* 0x7ffe */ #define XMT_HEADER 8 #define RCV_DONE 0x0008 #define RX_OK 0x2000 #define RX_ERROR 0x0d81 #define TX_DONE_BIT 0x0080 #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 0x0a #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 0x0a #define XMT_UPPER_LIMIT_REG 0x0b /* 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 0x0a #define EESK 0x01 #define EECS 0x02 #define EEDI 0x04 #define EEDO 0x08 /* 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). */ #ifdef HAVE_DEVLIST /* Support for an alternate probe manager, which will eliminate the boilerplate below. */ struct netdev_entry netcard_drv = {"eepro", eepro_probe1, EEPRO_IO_EXTENT, eepro_portlist}; #else int __init eepro_probe(struct net_device *dev) { int i; int base_addr = dev ? dev->base_addr : 0; #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 (check_region(WakeupPort, 2)==0) { 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]); } } else printk(KERN_WARNING "Checkregion Failed!\n"); } #endif if (base_addr > 0x1ff) /* Check a single specified location. */ return eepro_probe1(dev, base_addr); else if (base_addr != 0) /* Don't probe at all. */ return ENXIO; for (i = 0; eepro_portlist[i]; i++) { int ioaddr = eepro_portlist[i]; if (check_region(ioaddr, EEPRO_IO_EXTENT)) continue; if (eepro_probe1(dev, ioaddr) == 0) return 0; } return ENODEV; } #endif void printEEPROMInfo(short ioaddr) { unsigned short Word; int i,j; for (i=0, j=ee_Checksum; i>ee_IO0)<<4); if (net_debug>4) { Word=read_eeprom(ioaddr, 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_Jabber)); printk(KERN_DEBUG " Duplex: %d\n", GetBit(Word,ee_Duplex)); } Word=read_eeprom(ioaddr, 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("TPE "); if (GetBit(Word,ee_PortBNC)) printk("BNC "); if (GetBit(Word,ee_PortAUI)) printk("AUI "); printk("port(s) \n"); Word=read_eeprom(ioaddr, 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=read_eeprom(ioaddr, 7); printk(KERN_DEBUG "Word7:\n"); printk(KERN_DEBUG " INT to IRQ:\n"); printk(KERN_DEBUG); for (i=0, j=0; i<15; i++) if (GetBit(Word,i)) printk(" INT%d -> IRQ %d;",j++,i); printk("\n"); } /* 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. */ int eepro_probe1(struct net_device *dev, short ioaddr) { unsigned short station_addr[6], id, counter; int i,j, irqMask; int eepro; const char *ifmap[] = {"AUI", "10Base2", "10BaseT"}; enum iftype { AUI=0, BNC=1, TPE=2 }; /* Now, we are going to check for the signature of the ID_REG (register 2 of bank 0) */ id=inb(ioaddr + ID_REG); printk(KERN_DEBUG " id: %#x ",id); printk(" io: %#x ",ioaddr); if (((id) & ID_REG_MASK) == ID_REG_SIG) { /* 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 (((id=inb(ioaddr+ID_REG)) & R_ROBIN_BITS) == (counter + 0x40)) { /* Yes, the 82595 has been found */ /* Now, get the ethernet hardware address from the EEPROM */ station_addr[0] = read_eeprom(ioaddr, 2); station_addr[1] = read_eeprom(ioaddr, 3); station_addr[2] = read_eeprom(ioaddr, 4); /* Check the station address for the manufacturer's code */ if (net_debug>3) printEEPROMInfo(ioaddr); if (read_eeprom(ioaddr,7)== ee_FX_INT2IRQ) { /* int to IRQ Mask */ eepro = 2; printk("%s: Intel EtherExpress Pro/10+ ISA\n at %#x,", dev->name, ioaddr); } else if (station_addr[2] == 0x00aa) { eepro = 1; printk("%s: Intel EtherExpress Pro/10 ISA at %#x,", dev->name, ioaddr); } else { eepro = 0; printk("%s: Intel 82595-based lan card at %#x,", dev->name, ioaddr); } /* Fill in the 'dev' fields. */ dev->base_addr = ioaddr; for (i=0; i < 6; i++) { dev->dev_addr[i] = ((unsigned char *) station_addr)[5-i]; printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]); } if ((dev->mem_end & 0x3f) < 3 || /* RX buffer must be more than 3K */ (dev->mem_end & 0x3f) > 29) /* and less than 29K */ dev->mem_end = RCV_RAM; /* or it will be set to 24K */ else dev->mem_end = 1024*dev->mem_end; /* Maybe I should shift << 10 */ /* From now on, dev->mem_end contains the actual size of rx buffer */ if (net_debug > 3) printk(", %dK RCV buffer", (int)(dev->mem_end)/1024); /* ............... */ if (GetBit( read_eeprom(ioaddr, 5),ee_BNC_TPE)) dev->if_port = BNC; else dev->if_port = TPE; /* ............... */ if ((dev->irq < 2) && (eepro!=0)) { i = read_eeprom(ioaddr, 1); irqMask = read_eeprom(ioaddr, 7); i &= 0x07; /* Mask off INT number */ for (j=0; ((j<16) && (i>=0)); j++) { if ((irqMask & (1<irq = j; break; /* found bit corresponding to irq */ } i--; /* count bits set in irqMask */ } } if (dev -> irq<2) { printk(" Duh! illegal interrupt vector stored in EEPROM.\n"); return ENODEV; } else if (dev->irq==2) dev->irq = 9; else if (dev->irq == 2) dev->irq = 9; } if (dev->irq > 2) { printk(", IRQ %d, %s.\n", dev->irq, ifmap[dev->if_port]); } else printk(", %s.\n", ifmap[dev->if_port]); if ((dev->mem_start & 0xf) > 0) /* I don't know if this is */ net_debug = dev->mem_start & 7; /* still useful or not */ if (net_debug > 3) { i = read_eeprom(ioaddr, 5); if (i & 0x2000) /* bit 13 of EEPROM word 5 */ printk(KERN_DEBUG "%s: Concurrent Processing is enabled but not used!\n", dev->name); } if (net_debug) printk(version); /* Grab the region so we can find another board if autoIRQ fails. */ request_region(ioaddr, EEPRO_IO_EXTENT, dev->name); /* Initialize the device structure */ dev->priv = kmalloc(sizeof(struct eepro_local), GFP_KERNEL); if (dev->priv == NULL) return -ENOMEM; memset(dev->priv, 0, sizeof(struct eepro_local)); ((struct eepro_local *)dev->priv)->lock = SPIN_LOCK_UNLOCKED; dev->open = eepro_open; dev->stop = eepro_close; dev->hard_start_xmit = eepro_send_packet; dev->get_stats = eepro_get_stats; dev->set_multicast_list = &set_multicast_list; dev->tx_timeout = eepro_tx_timeout; dev->watchdog_timeo = TX_TIMEOUT; /* Fill in the fields of the device structure with ethernet generic values */ ether_setup(dev); outb(RESET_CMD, ioaddr); /* RESET the 82595 */ return 0; } else return ENODEV; } else if (net_debug > 3) printk ("EtherExpress Pro probed failed!\n"); return ENODEV; } /* 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 char irqrmap[] = {-1,-1,0,1,-1,2,-1,-1,-1,0,3,4,-1,-1,-1,-1}; static 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) { int irqlist[] = { 3, 4, 5, 7, 9, 10, 11, 12, 0 }; int *irqp = irqlist, temp_reg, ioaddr = dev->base_addr; outb(BANK1_SELECT, ioaddr); /* be CAREFUL, BANK 1 now */ /* Enable the interrupt line. */ temp_reg = inb(ioaddr + REG1); outb(temp_reg | INT_ENABLE, ioaddr + REG1); outb(BANK0_SELECT, ioaddr); /* be CAREFUL, BANK 0 now */ /* clear all interrupts */ outb(ALL_MASK, ioaddr + STATUS_REG); /* Let EXEC event to interrupt */ outb(ALL_MASK & ~(EXEC_MASK), ioaddr + INT_MASK_REG); do { outb(BANK1_SELECT, ioaddr); /* be CAREFUL, BANK 1 now */ temp_reg = inb(ioaddr + INT_NO_REG); outb((temp_reg & 0xf8) | irqrmap[*irqp], ioaddr + INT_NO_REG); outb(BANK0_SELECT, ioaddr); /* Switch back to Bank 0 */ if (request_irq (*irqp, NULL, 0, "bogus", dev) != EBUSY) { /* Twinkle the interrupt, and check if it's seen */ autoirq_setup(0); outb(DIAGNOSE_CMD, ioaddr); /* RESET the 82595 */ if (*irqp == autoirq_report(2)) /* It's a good IRQ line */ break; /* clear all interrupts */ outb(ALL_MASK, ioaddr + STATUS_REG); } } while (*++irqp); outb(BANK1_SELECT, ioaddr); /* Switch back to Bank 1 */ /* Disable the physical interrupt line. */ temp_reg = inb(ioaddr + REG1); outb(temp_reg & 0x7f, ioaddr + REG1); outb(BANK0_SELECT, ioaddr); /* Switch back to Bank 0 */ /* Mask all the interrupts. */ outb(ALL_MASK, ioaddr + INT_MASK_REG); /* clear all interrupts */ outb(ALL_MASK, ioaddr + STATUS_REG); 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, rcv_ram = dev->mem_end; struct eepro_local *lp = (struct eepro_local *)dev->priv; if (net_debug > 3) printk(KERN_DEBUG "%s: entering eepro_open routine.\n", dev->name); if ((irqMask=read_eeprom(ioaddr,7))== 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("%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("%s: unable to get IRQ %d.\n", dev->name, dev->irq); return -EAGAIN; } #ifdef irq2dev_map if (((irq2dev_map[dev->irq] != 0) || (irq2dev_map[dev->irq] = dev) == 0) && (irq2dev_map[dev->irq]!=dev)) { /* printk("%s: IRQ map wrong\n", dev->name); */ return -EAGAIN; } #endif /* Initialize the 82595. */ outb(BANK2_SELECT, ioaddr); /* be CAREFUL, BANK 2 now */ temp_reg = inb(ioaddr + 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 + 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 */ outb(BANK1_SELECT, ioaddr); /* be CAREFUL, BANK 1 now */ /* Set the interrupt vector */ temp_reg = inb(ioaddr + INT_NO_REG); if (lp->eepro == 2) 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 == 2) 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(RCV_LOWER_LIMIT, ioaddr + RCV_LOWER_LIMIT_REG); outb(RCV_UPPER_LIMIT, ioaddr + RCV_UPPER_LIMIT_REG); outb(XMT_LOWER_LIMIT, ioaddr + XMT_LOWER_LIMIT_REG); outb(XMT_UPPER_LIMIT, ioaddr + XMT_UPPER_LIMIT_REG); /* Enable the interrupt line. */ temp_reg = inb(ioaddr + REG1); outb(temp_reg | INT_ENABLE, ioaddr + REG1); outb(BANK0_SELECT, ioaddr); /* Switch back to Bank 0 */ /* Let RX and TX events to interrupt */ outb(ALL_MASK & ~(RX_MASK | TX_MASK), ioaddr + INT_MASK_REG); /* clear all interrupts */ outb(ALL_MASK, ioaddr + STATUS_REG); /* Initialize RCV */ outw(RCV_LOWER_LIMIT << 8, ioaddr + RCV_BAR); lp->rx_start = (RCV_LOWER_LIMIT << 8) ; outw((RCV_UPPER_LIMIT << 8) | 0xfe, ioaddr + RCV_STOP); /* Initialize XMT */ outw(XMT_LOWER_LIMIT << 8, ioaddr + XMT_BAR); /* 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); /*outb(~old9, ioaddr + 9); if (((temp_reg = inb(ioaddr + 9)) == ( (~old9)&0xff) )) {*/ if (irqMask==ee_FX_INT2IRQ) { enum iftype { AUI=0, BNC=1, TPE=2 }; 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. */ outb(BANK2_SELECT, 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); outb(BANK0_SELECT, 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"); } } outb(SEL_RESET_CMD, ioaddr); /* We are supposed to wait for 2 us after a SEL_RESET */ SLOW_DOWN; SLOW_DOWN; lp->tx_start = lp->tx_end = XMT_LOWER_LIMIT << 8; /* or = RCV_RAM */ lp->tx_last = 0; netif_start_queue(dev); if (net_debug > 3) printk(KERN_DEBUG "%s: exiting eepro_open routine.\n", dev->name); outb(RCV_ENABLE_CMD, ioaddr); MOD_INC_USE_COUNT; return 0; } static void eepro_tx_timeout (struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *) dev->priv; int ioaddr = dev->base_addr; int rcv_ram = dev->mem_end; /* 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 the log file */ printk (KERN_DEBUG "%s: transmit timed out, %s?\n", dev->name, "network cable problem"); lp->stats.tx_errors++; /* Try to restart the adaptor. */ outb (SEL_RESET_CMD, ioaddr); /* We are supposed to wait for 2 us after a SEL_RESET */ SLOW_DOWN; SLOW_DOWN; /* Do I also need to flush the transmit buffers here? YES? */ lp->tx_start = lp->tx_end = rcv_ram; lp->tx_last = 0; dev->trans_start = jiffies; netif_wake_queue (dev); outb (RCV_ENABLE_CMD, ioaddr); } static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *)dev->priv; unsigned long flags; if (net_debug > 5) printk(KERN_DEBUG "%s: entering eepro_send_packet routine.\n", dev->name); netif_stop_queue (dev); spin_lock_irqsave(&lp->lock, flags); { short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; unsigned char *buf = skb->data; lp->stats.tx_bytes+=skb->len; hardware_send_packet(dev, buf, length); dev->trans_start = jiffies; } dev_kfree_skb (skb); /* You might need to clean up and record Tx statistics here. */ /* lp->stats.tx_aborted_errors++; */ if (net_debug > 5) printk(KERN_DEBUG "%s: exiting eepro_send_packet routine.\n", dev->name); spin_unlock_irqrestore(&lp->lock, flags); return 0; } /* The typical workload of the driver: Handle the network interface interrupts. */ static void eepro_interrupt(int irq, void *dev_id, struct pt_regs * regs) { struct net_device *dev = (struct net_device *)dev_id; /* (struct net_device *)(irq2dev_map[irq]);*/ struct eepro_local *lp = (struct eepro_local *)dev->priv; int ioaddr, status, boguscount = 20; if (dev == NULL) { printk (KERN_ERR "eepro_interrupt(): irq %d for unknown device.\\n", irq); return; } spin_lock(&lp->lock); if (net_debug > 5) printk(KERN_DEBUG "%s: entering eepro_interrupt routine.\n", dev->name); ioaddr = dev->base_addr; do { status = inb(ioaddr + STATUS_REG); if (status & RX_INT) { if (net_debug > 4) printk(KERN_DEBUG "%s: packet received interrupt.\n", dev->name); /* Acknowledge the RX_INT */ outb(RX_INT, ioaddr + STATUS_REG); /* Get the received packets */ eepro_rx(dev); } else if (status & TX_INT) { if (net_debug > 4) printk(KERN_DEBUG "%s: packet transmit interrupt.\n", dev->name); /* Acknowledge the TX_INT */ outb(TX_INT, ioaddr + STATUS_REG); /* Process the status of transmitted packets */ eepro_transmit_interrupt(dev); } } while ((boguscount-- > 0) && (status & 0x06)); if (net_debug > 5) printk(KERN_DEBUG "%s: exiting eepro_interrupt routine.\n", dev->name); spin_unlock(&lp->lock); return; } static int eepro_close(struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *)dev->priv; int ioaddr = dev->base_addr; int rcv_ram = dev->mem_end; short temp_reg; netif_stop_queue(dev); outb(BANK1_SELECT, ioaddr); /* Switch back to Bank 1 */ /* Disable the physical interrupt line. */ temp_reg = inb(ioaddr + REG1); outb(temp_reg & 0x7f, ioaddr + REG1); outb(BANK0_SELECT, ioaddr); /* Switch back to Bank 0 */ /* Flush the Tx and disable Rx. */ outb(STOP_RCV_CMD, ioaddr); lp->tx_start = lp->tx_end = rcv_ram ; lp->tx_last = 0; /* Mask all the interrupts. */ outb(ALL_MASK, ioaddr + INT_MASK_REG); /* clear all interrupts */ outb(ALL_MASK, ioaddr + STATUS_REG); /* Reset the 82595 */ outb(RESET_CMD, ioaddr); /* release the interrupt */ free_irq(dev->irq, dev); #ifdef irq2dev_map irq2dev_map[dev->irq] = 0; #endif /* Update the statistics here. What statistics? */ /* We are supposed to wait for 200 us after a RESET */ SLOW_DOWN; SLOW_DOWN; /* May not be enough? */ MOD_DEC_USE_COUNT; return 0; } /* Get the current statistics. This may be called with the card open or closed. */ static struct enet_statistics * eepro_get_stats(struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *)dev->priv; return &lp->stats; } /* Set or clear the multicast filter for this adaptor. */ static void set_multicast_list(struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *)dev->priv; short ioaddr = dev->base_addr; unsigned short mode; struct dev_mc_list *dmi=dev->mc_list; if (dev->flags&(IFF_ALLMULTI|IFF_PROMISC) || dev->mc_count > 63) { /* * We must make the kernel realise we had to move * into promisc mode or we start all out war on * the cable. If it was a promisc request the * flag is already set. If not we assert it. */ dev->flags|=IFF_PROMISC; outb(BANK2_SELECT, 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 */ outb(BANK0_SELECT, ioaddr); /* Return to BANK 0 now */ printk("%s: promiscuous mode enabled.\n", dev->name); } else if (dev->mc_count==0 ) { outb(BANK2_SELECT, 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 */ outb(BANK0_SELECT, 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. */ outb(ALL_MASK, ioaddr + INT_MASK_REG); outb(BANK2_SELECT, 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 */ outb(BANK0_SELECT, 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*(dev->mc_count + 1), ioaddr + IO_PORT); for (i = 0; i < dev->mc_count; i++) { eaddrs=(unsigned short *)dmi->dmi_addr; dmi=dmi->next; 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 + XMT_BAR); outb(MC_SETUP, ioaddr); /* Update the transmit queue */ i = lp->tx_end + XMT_HEADER + 6*(dev->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("%s: multicast setup failed.\n", dev->name); break; } else if ((i & 0x0f) == 0x03) { /* MC-Done */ printk("%s: set Rx mode to %d address%s.\n", dev->name, dev->mc_count, dev->mc_count > 1 ? "es":""); break; } } } while (++boguscount < 100); /* Re-enable RX and TX interrupts */ outb(ALL_MASK & ~(RX_MASK | TX_MASK), ioaddr + INT_MASK_REG); } outb(RCV_ENABLE_CMD, 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) int read_eeprom(int ioaddr, int location) { int i; unsigned short retval = 0; short ee_addr = ioaddr + EEPROM_REG; int read_cmd = location | EE_READ_CMD; short ctrl_val = EECS ; outb(BANK2_SELECT, 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(); outb(BANK0_SELECT, ioaddr); return retval; } static void hardware_send_packet(struct net_device *dev, void *buf, short length) { struct eepro_local *lp = (struct eepro_local *)dev->priv; short ioaddr = dev->base_addr; int rcv_ram = dev->mem_end; unsigned status, tx_available, last, end, boguscount = 100; if (net_debug > 5) printk(KERN_DEBUG "%s: entering hardware_send_packet routine.\n", dev->name); while (boguscount-- > 0) { /* Disable RX and TX interrupts. Necessary to avoid corruption of the HOST_ADDRESS_REG by interrupt service routines. */ outb(ALL_MASK, ioaddr + INT_MASK_REG); /* determine how much of the transmit buffer space is available */ if (lp->tx_end > lp->tx_start) tx_available = 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 = XMT_RAM; if (((((length + 3) >> 1) << 1) + 2*XMT_HEADER) >= tx_available) /* No space available ??? */ { eepro_transmit_interrupt(dev); /* Clean up the transmiting queue */ /* Enable RX and TX interrupts */ outb(ALL_MASK & ~(RX_MASK | TX_MASK), ioaddr + INT_MASK_REG); continue; } last = lp->tx_end; end = last + (((length + 3) >> 1) << 1) + XMT_HEADER; if (end >= RAM_SIZE) { /* the transmit buffer is wrapped around */ if ((RAM_SIZE - last) <= XMT_HEADER) { /* Arrrr!!!, must keep the xmt header together, several days were lost to chase this one down. */ last = rcv_ram; end = last + (((length + 3) >> 1) << 1) + XMT_HEADER; } else end = rcv_ram + (end - RAM_SIZE); } 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 + 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 (netif_queue_stopped(dev)) netif_wake_queue(dev); /* Enable RX and TX interrupts */ outb(ALL_MASK & ~(RX_MASK | TX_MASK), ioaddr + INT_MASK_REG); if (net_debug > 5) printk(KERN_DEBUG "%s: exiting hardware_send_packet routine.\n", dev->name); return; } netif_stop_queue(dev); if (net_debug > 5) printk(KERN_DEBUG "%s: exiting hardware_send_packet routine.\n", dev->name); } static void eepro_rx(struct net_device *dev) { struct eepro_local *lp = (struct eepro_local *)dev->priv; short ioaddr = dev->base_addr, rcv_ram = dev->mem_end; 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; lp->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); lp->stats.rx_dropped++; break; } skb->dev = dev; 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); lp->stats.rx_packets++; } else { /* Not sure will ever reach here, I set the 595 to discard bad received frames */ lp->stats.rx_errors++; if (rcv_status & 0x0100) lp->stats.rx_over_errors++; else if (rcv_status & 0x0400) lp->stats.rx_frame_errors++; else if (rcv_status & 0x0800) lp->stats.rx_crc_errors++; printk("%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) lp->stats.rx_length_errors++; if (--boguscount == 0) break; rcv_car = lp->rx_start + RCV_HEADER + rcv_size; lp->rx_start = rcv_next_frame; outw(rcv_next_frame, ioaddr + HOST_ADDRESS_REG); rcv_event = inw(ioaddr + IO_PORT); } if (rcv_car == 0) rcv_car = (RCV_UPPER_LIMIT << 8) | 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 = (struct eepro_local *)dev->priv; short ioaddr = dev->base_addr; short boguscount = 20; short xmt_status; /* if (dev->tbusy == 0) { printk("%s: transmit_interrupt called with tbusy = 0 ??\n", dev->name); printk(KERN_DEBUG "%s: transmit_interrupt called with tbusy = 0 ??\n", dev->name); } */ while (lp->tx_start != lp->tx_end) { outw(lp->tx_start, ioaddr + HOST_ADDRESS_REG); xmt_status = inw(ioaddr+IO_PORT); if ((xmt_status & TX_DONE_BIT) == 0) break; xmt_status = inw(ioaddr+IO_PORT); lp->tx_start = inw(ioaddr+IO_PORT); netif_wake_queue (dev); if (xmt_status & 0x2000) lp->stats.tx_packets++; else { lp->stats.tx_errors++; if (xmt_status & 0x0400) lp->stats.tx_carrier_errors++; printk("%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) { lp->stats.collisions += (xmt_status & 0x000f); } if ((xmt_status & 0x0040) == 0x0) { lp->stats.tx_heartbeat_errors++; } if (--boguscount == 0) break; } } #define MAX_EEPRO 8 static struct net_device dev_eepro[MAX_EEPRO]; static int io[MAX_EEPRO] = { #ifdef PnPWakeup 0x210, /*: default for PnP enabled FX chips */ #else 0x200, /* Why? */ #endif [1 ... MAX_EEPRO - 1] = -1 }; static int irq[MAX_EEPRO] = { [0 ... MAX_EEPRO-1] = 0 }; static int mem[MAX_EEPRO] = { /* Size of the rx buffer in KB */ [0 ... MAX_EEPRO-1] = RCV_RAM/1024 }; static int n_eepro = 0; /* For linux 2.1.xx */ MODULE_AUTHOR("Pascal Dupuis for the 2.1 stuff (locking,...)"); MODULE_DESCRIPTION("Intel i82595 ISA EtherExpressPro10/10+ driver"); MODULE_PARM(io, "1-" __MODULE_STRING(MAX_EEPRO) "i"); MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_EEPRO) "i"); MODULE_PARM(mem, "1-" __MODULE_STRING(MAX_EEPRO) "i"); #ifdef MODULE int init_module(void) { if (io[0] == 0) printk("eepro_init_module: You should not use auto-probing with insmod!\n"); while (n_eepro < MAX_EEPRO && io[n_eepro] >= 0) { struct net_device *d = &dev_eepro[n_eepro]; d->mem_end = mem[n_eepro]; d->base_addr = io[n_eepro]; d->irq = irq[n_eepro]; d->init = eepro_probe; if (register_netdev(d) == 0) n_eepro++; else break; } return n_eepro ? 0 : -ENODEV; } void cleanup_module(void) { int i; for (i=0; ipriv,sizeof(struct eepro_local)); d->priv=NULL; /* If we don't do this, we can't re-insmod it later. */ release_region(d->base_addr, EEPRO_IO_EXTENT); } } #endif /* MODULE */