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- /* ewrk3.c: A DIGITAL EtherWORKS 3 ethernet driver for linux.
-
- Written 1994 by David C. Davies.
-
- Copyright 1994 Digital Equipment Corporation.
-
- This software may be used and distributed according to the terms of
- the GNU Public License, incorporated herein by reference.
-
- This driver is written for the Digital Equipment Corporation series
- of EtherWORKS ethernet cards:
-
- DE203 Turbo (BNC)
- DE204 Turbo (TP)
- DE205 Turbo (TP BNC)
-
- The driver has been tested on a relatively busy network using the DE205
- card and benchmarked with 'ttcp': it transferred 16M of data at 975kB/s
- (7.8Mb/s) to a DECstation 5000/200.
-
- The author may be reached as davies@wanton.lkg.dec.com or Digital
- Equipment Corporation, 550 King Street, Littleton MA 01460.
-
- =========================================================================
- This driver has been written substantially from scratch, although its
- inheritance of style and stack interface from 'depca.c' and in turn from
- Donald Becker's 'lance.c' should be obvious.
-
- The DE203/4/5 boards all use a new proprietary chip in place of the
- LANCE chip used in prior cards (DEPCA, DE100, DE200/1/2, DE210, DE422).
- Use the depca.c driver in the standard distribution for the LANCE based
- cards from DIGITAL; this driver will not work with them.
-
- The DE203/4/5 cards have 2 main modes: shared memory and I/O only. I/O
- only makes all the card accesses through I/O transactions and no high
- (shared) memory is used. This mode provides a >48% performance penalty
- and is deprecated in this driver, although allowed to provide initial
- setup when hardstrapped.
-
- The shared memory mode comes in 3 flavours: 2kB, 32kB and 64kB. There is
- no point in using any mode other than the 2kB mode - their performances
- are virtually identical, although the driver has been tested in the 2kB
- and 32kB modes. I would suggest you uncomment the line:
-
- FORCE_2K_MODE;
-
- to allow the driver to configure the card as a 2kB card at your current
- base address, thus leaving more room to clutter your system box with
- other memory hungry boards.
-
- Upto 21 ISA and 7 EISA cards can be supported under this driver, limited
- primarily by the available IRQ lines. I have checked different
- configurations of multiple depca cards and ewrk3 cards and have not
- found a problem yet (provided you have at least depca.c v0.38) ...
-
- The board IRQ setting must be at an unused IRQ which is auto-probed
- using Donald Becker's autoprobe routines. All these cards are at
- {5,10,11,15}.
-
- No 16MB memory limitation should exist with this driver as DMA is not
- used and the common memory area is in low memory on the network card (my
- current system has 20MB and I've not had problems yet).
-
- The ability to load this driver as a loadable module has been included
- and used extensively during the driver development (to save those long
- reboot sequences). To utilise this ability, you have to do 8 things:
-
- 0) have a copy of the loadable modules code installed on your system.
- 1) copy ewrk3.c from the /linux/drivers/net directory to your favourite
- temporary directory.
- 2) edit the source code near line 1830 to reflect the I/O address and
- IRQ you're using.
- 3) compile ewrk3.c, but include -DMODULE in the command line to ensure
- that the correct bits are compiled (see end of source code).
- 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a
- kernel with the ewrk3 configuration turned off and reboot.
- 5) insmod ewrk3.o
- 6) run the net startup bits for your new eth?? interface manually
- (usually /etc/rc.inet[12] at boot time).
- 7) enjoy!
-
- [Alan Cox: Changed this so you can insmod ewrk3.o irq=x io=y]
-
- Note that autoprobing is not allowed in loadable modules - the system is
- already up and running and you're messing with interrupts.
-
- To unload a module, turn off the associated interface
- 'ifconfig eth?? down' then 'rmmod ewrk3'.
-
- Promiscuous mode has been turned off in this driver, but all the
- multicast address bits have been turned on. This improved the send
- performance on a busy network by about 13%.
-
- Ioctl's have now been provided (primarily because I wanted to grab some
- packet size statistics). They are patterned after 'plipconfig.c' from a
- suggestion by Alan Cox. Using these ioctls, you can enable promiscuous
- mode, add/delete multicast addresses, change the hardware address, get
- packet size distribution statistics and muck around with the control and
- status register. I'll add others if and when the need arises.
-
- TO DO:
- ------
-
-
- Revision History
- ----------------
-
- Version Date Description
-
- 0.1 26-aug-94 Initial writing. ALPHA code release.
- 0.11 31-aug-94 Fixed: 2k mode memory base calc.,
- LeMAC version calc.,
- IRQ vector assignments during autoprobe.
- 0.12 31-aug-94 Tested working on LeMAC2 (DE20[345]-AC) card.
- Fixed up MCA hash table algorithm.
- 0.20 4-sep-94 Added IOCTL functionality.
- 0.21 14-sep-94 Added I/O mode.
- 0.21axp 15-sep-94 Special version for ALPHA AXP Linux V1.0
- 0.22 16-sep-94 Added more IOCTLs & tidied up.
- 0.23 21-sep-94 Added transmit cut through
- 0.24 31-oct-94 Added uid checks in some ioctls
- 0.30 1-nov-94 BETA code release
- 0.31 5-dec-94 Added check/snarf_region code.
- 0.32 16-jan-95 Broadcast packet fix
-
- =========================================================================
- */
-
- static char *version = "ewrk3.c:v0.32 1/16/95 davies@wanton.lkg.dec.com\n";
-
- #ifdef MODULE
- #include <linux/module.h>
- #include <linux/version.h>
- #endif /* MODULE */
-
- #include <stdarg.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/string.h>
- #include <linux/ptrace.h>
- #include <linux/errno.h>
- #include <linux/ioport.h>
- #include <linux/malloc.h>
- #include <linux/interrupt.h>
- #include <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/dma.h>
- #include <asm/segment.h>
-
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
-
- #include <linux/time.h>
- #include <linux/types.h>
- #include <linux/unistd.h>
-
- #include "ewrk3.h"
-
- #ifdef EWRK3_DEBUG
- static int ewrk3_debug = EWRK3_DEBUG;
- #else
- static int ewrk3_debug = 1;
- #endif
-
- #ifndef PROBE_LENGTH
- #define PROBE_LENGTH 32
- #endif
-
- #ifndef PROBE_SEQUENCE
- #define PROBE_SEQUENCE "FF0055AAFF0055AA"
- #endif
-
- #ifndef EWRK3_SIGNATURE
- #define EWRK3_SIGNATURE {"DE203","DE204","DE205",""}
- #define EWRK3_NAME_LENGTH 8
- #endif
-
- #ifndef EWRK3_RAM_BASE_ADDRESSES
- #define EWRK3_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0x00000}
- #endif
-
- /*
- ** Sets up the search areas for the autoprobe. You can disable an area
- ** by writing a zero into the corresponding bit position in EWRK3_IO_SEARCH.
- ** The LSb -> I/O 0x100. Each bit increments the I/O location searched by 0x20.
- ** Bit 24 -> I/O 0x400.
- **
- ** By default, probes at locations:
- ** 0x1e0 (may conflict with hard disk)
- ** 0x320 (may conflict with hard disk)
- ** 0x3e0 (may conflict with floppy disk)
- **
- ** are disabled.
- */
-
- #define EWRK3_IO_BASE 0x100 /* Start address for probe search */
- #define EWRK3_IOP_INC 0x20 /* I/O address increment */
- #define EWRK3_TOTAL_SIZE 0x20 /* required I/O address space */
- #define EWRK3_IO_SEARCH 0x007dff7f /* probe search mask */
- static long mem_chkd = EWRK3_IO_SEARCH; /* holds which I/O addrs should be */
- /* checked, for multi-EWRK3 case */
-
- #ifndef MAX_NUM_EWRK3S
- #define MAX_NUM_EWRK3S 21
- #endif
-
- #ifndef EWRK3_EISA_IO_PORTS
- #define EWRK3_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */
- #endif
-
- #ifndef MAX_EISA_SLOTS
- #define MAX_EISA_SLOTS 8
- #define EISA_SLOT_INC 0x1000
- #endif
-
- #define CRC_POLYNOMIAL_BE 0x04c11db7UL /* Ethernet CRC, big endian */
- #define CRC_POLYNOMIAL_LE 0xedb88320UL /* Ethernet CRC, little endian */
-
- /*
- ** EtherWORKS 3 shared memory window sizes
- */
- #define IO_ONLY 0x00
- #define SHMEM_2K 0x800
- #define SHMEM_32K 0x8000
- #define SHMEM_64K 0x10000
-
- /*
- ** EtherWORKS 3 IRQ ENABLE/DISABLE
- */
- static unsigned char irq_mask = TNEM|TXDM|RNEM|RXDM;
-
- #define ENABLE_IRQs \
- icr |= irq_mask;\
- outb(icr, EWRK3_ICR) /* Enable the IRQs */
-
- #define DISABLE_IRQs \
- icr = inb(EWRK3_ICR);\
- icr &= ~irq_mask;\
- outb(icr, EWRK3_ICR) /* Disable the IRQs */
-
- /*
- ** EtherWORKS 3 START/STOP
- */
- #define START_EWRK3 \
- csr = inb(EWRK3_CSR);\
- csr &= ~(TXD|RXD);\
- outb(csr, EWRK3_CSR) /* Enable the TX and/or RX */
-
- #define STOP_EWRK3 \
- csr = (TXD|RXD);\
- outb(csr, EWRK3_CSR) /* Disable the TX and/or RX */
-
- /*
- ** The EtherWORKS 3 private structure
- */
- #define EWRK3_PKT_STAT_SZ 16
- #define EWRK3_PKT_BIN_SZ 128 /* Should be >=100 unless you
- increase EWRK3_PKT_STAT_SZ */
-
- struct ewrk3_private {
- long shmem_base; /* Shared memory start address */
- long shmem_length; /* Shared memory window length */
- struct enet_statistics stats; /* Public stats */
- struct {
- unsigned long bins[EWRK3_PKT_STAT_SZ]; /* Private stats counters */
- unsigned long unicast;
- unsigned long multicast;
- unsigned long broadcast;
- unsigned long excessive_collisions;
- unsigned long tx_underruns;
- unsigned long excessive_underruns;
- } pktStats;
- short mPage; /* Maximum 2kB Page number */
- unsigned char lemac; /* Chip rev. level */
- unsigned char hard_strapped; /* Don't allow a full open */
- unsigned char lock; /* Lock the page register */
- unsigned char txc; /* Transmit cut through */
- };
-
- /*
- ** Force the EtherWORKS 3 card to be in 2kB MODE
- */
- #define FORCE_2K_MODE \
- shmem_length = SHMEM_2K;\
- outb(((mem_start - 0x80000) >> 11), EWRK3_MBR)
-
- /*
- ** Public Functions
- */
- static int ewrk3_open(struct device *dev);
- static int ewrk3_queue_pkt(struct sk_buff *skb, struct device *dev);
- static void ewrk3_interrupt(int irq, struct pt_regs *regs);
- static int ewrk3_close(struct device *dev);
- static struct enet_statistics *ewrk3_get_stats(struct device *dev);
- static void set_multicast_list(struct device *dev, int num_addrs, void *addrs);
- static int ewrk3_ioctl(struct device *dev, struct ifreq *rq, int cmd);
-
- /*
- ** Private functions
- */
- static int ewrk3_hw_init(struct device *dev, short iobase);
- static void ewrk3_init(struct device *dev);
- static int ewrk3_rx(struct device *dev);
- static int ewrk3_tx(struct device *dev);
-
- static void EthwrkSignature(char * name, char *eeprom_image);
- static int DevicePresent(short iobase);
- static void SetMulticastFilter(struct device *dev, int num_addrs, char *addrs, char *multicast_table);
-
- static int Read_EEPROM(short iobase, unsigned char eaddr);
- static int Write_EEPROM(short data, short iobase, unsigned char eaddr);
- static unsigned char aprom_crc (struct device *dev, unsigned char *eeprom_image, char chipType);
-
- #ifndef MODULE
- static struct device *isa_probe(struct device *dev);
- static struct device *eisa_probe(struct device *dev);
- static struct device *alloc_device(struct device *dev, int iobase);
-
- static int num_ewrk3s = 0, num_eth = 0;
- static unsigned char irq[] = {5,0,10,3,11,9,15,12};
-
- #else
- int init_module(void);
- void cleanup_module(void);
-
- #endif /* MODULE */
-
- static int autoprobed = 0;
-
- /*
- ** Miscellaneous defines...
- */
- #define INIT_EWRK3 {\
- int i;\
- outb(EEPROM_INIT, EWRK3_IOPR);\
- for (i=0;i<5000;i++) inb(EWRK3_CSR);\
- }
-
-
-
-
- int ewrk3_probe(struct device *dev)
- {
- int base_addr = dev->base_addr;
- int status = -ENODEV;
- #ifndef MODULE
- struct device *eth0;
- #endif
-
- if (base_addr > 0x0ff) { /* Check a single specified location. */
- if (!autoprobed) { /* Module or fixed location */
- if (!check_region(base_addr, EWRK3_TOTAL_SIZE)) {
- if (((mem_chkd >> ((base_addr - EWRK3_IO_BASE)/ EWRK3_IOP_INC))&0x01)==1) {
- if (DevicePresent(base_addr) == 0) { /* Is EWRK3 really here? */
- /* Register I/O Region */
- request_region(base_addr, EWRK3_IOP_INC, "ewrk3");
- status = ewrk3_hw_init(dev, base_addr);
- } else {
- printk("ewrk3_probe(): No device found\n");
- mem_chkd &= ~(0x01 << ((base_addr - EWRK3_IO_BASE)/EWRK3_IOP_INC));
- }
- }
- } else {
- printk("%s: ewrk3_probe(): Detected a device already registered at 0x%02x\n", dev->name, base_addr);
- mem_chkd &= ~(0x01 << ((base_addr - EWRK3_IO_BASE)/EWRK3_IOP_INC));
- }
- } else { /* already know what ewrk3 h/w is here */
- status = ewrk3_hw_init(dev, base_addr);
- }
- } else if (base_addr > 0) { /* Don't probe at all. */
- status = -ENXIO;
-
- #ifdef MODULE
- } else {
- printk("Autoprobing is not supported when loading a module based driver.\n");
- status = -EIO;
- #else
- } else if (!autoprobed) { /* First probe for the EWRK3 test */
- /* pattern in ROM */
- eth0=isa_probe(dev);
- eth0=eisa_probe(eth0);
- if (dev->priv) status=0;
- autoprobed = 1;
- } else {
- status = -ENXIO;
- #endif /* MODULE */
-
- }
-
- if (status) dev->base_addr = base_addr;
-
- return status;
- }
-
- static int
- ewrk3_hw_init(struct device *dev, short iobase)
- {
- struct ewrk3_private *lp;
- int i, status=0;
- unsigned long mem_start, shmem_length;
- char name[EWRK3_NAME_LENGTH + 1];
- unsigned char cr, cmr, icr, nicsr, lemac, hard_strapped = 0;
- unsigned char eeprom_image[EEPROM_MAX], chksum, eisa_cr = 0;
-
- /*
- ** Stop the EWRK3. Enable the DBR ROM. Disable interrupts and remote boot.
- ** This also disables the EISA_ENABLE bit in the EISA Control Register.
- */
- if (iobase > 0x400) eisa_cr = inb(EISA_CR);
- INIT_EWRK3;
-
- nicsr = inb(EWRK3_CSR);
-
- /*
- ** Disable & mask all board interrupts
- */
- DISABLE_IRQs;
-
- if (nicsr == TXD|RXD) {
-
- /*
- ** Check that the EEPROM is alive and well and not living on Pluto...
- */
- for (chksum=0, i=0; i<EEPROM_MAX; i+=2) {
- union {
- short val;
- char c[2];
- } tmp;
-
- tmp.val = (short)Read_EEPROM(iobase, (i>>1));
- eeprom_image[i] = tmp.c[0];
- eeprom_image[i+1] = tmp.c[1];
-
- chksum += eeprom_image[i] + eeprom_image[i+1];
- }
-
- if (chksum != 0) { /* Bad EEPROM Data! */
- printk("%s: Device has a bad on-board EEPROM.\n", dev->name);
- status = -ENXIO;
- } else {
- /*
- ** Now find out what kind of EWRK3 we have.
- */
- EthwrkSignature(name, eeprom_image);
-
- if (*name != '\0') { /* found a EWRK3 device */
- dev->base_addr = iobase;
-
- if (iobase > 0x400) {
- outb(eisa_cr, EISA_CR); /* Rewrite the EISA CR */
- }
-
- lemac = eeprom_image[EEPROM_CHIPVER];
- cmr = inb(EWRK3_CMR);
-
- if (((lemac == LeMAC) && ((cmr & NO_EEPROM) != NO_EEPROM)) ||
- ((lemac == LeMAC2) && !(cmr & HS))) {
- printk("%s: %s at %#3x", dev->name, name, iobase);
- hard_strapped = 1;
- } else if ((iobase&0x0fff)==EWRK3_EISA_IO_PORTS) {
- /* EISA slot address */
- printk("%s: %s at %#3x (EISA slot %d)",
- dev->name, name, iobase, ((iobase>>12)&0x0f));
- } else { /* ISA port address */
- printk("%s: %s at %#3x", dev->name, name, iobase);
- }
-
- if (!status) {
- printk(", h/w address ");
- if (lemac == LeMAC2) {
- for (i = 0;i < ETH_ALEN - 1;i++) { /* get the ethernet address */
- printk("%2.2x:", dev->dev_addr[i] =
- eeprom_image[EEPROM_PADDR0 + i]);
- outb(eeprom_image[EEPROM_PADDR0 + i], EWRK3_PAR0 + i);
- }
- printk("%2.2x,\n",dev->dev_addr[i] = eeprom_image[EEPROM_PADDR0 + i]);
- outb(eeprom_image[EEPROM_PADDR0 + i], EWRK3_PAR0 + i);
- } else {
- DevicePresent(iobase); /* needed after the EWRK3_INIT */
- for (i = 0; i < ETH_ALEN - 1; i++) { /* get the ethernet addr. */
- printk("%2.2x:", dev->dev_addr[i] = inb(EWRK3_APROM));
- outb(dev->dev_addr[i], EWRK3_PAR0 + i);
- }
- printk("%2.2x,\n", dev->dev_addr[i] = inb(EWRK3_APROM));
- outb(dev->dev_addr[i], EWRK3_PAR0 + i);
- }
-
- if (aprom_crc(dev, eeprom_image, lemac)) {
- printk(" which has an EEPROM CRC error.\n");
- status = -ENXIO;
- } else {
- if (lemac == LeMAC2) { /* Special LeMAC2 CMR things */
- cmr &= ~(RA | WB | LINK | POLARITY | _0WS);
- if (eeprom_image[EEPROM_MISC0] & READ_AHEAD) cmr |= RA;
- if (eeprom_image[EEPROM_MISC0] & WRITE_BEHIND) cmr |= WB;
- if (eeprom_image[EEPROM_NETMAN0] & NETMAN_POL) cmr |= POLARITY;
- if (eeprom_image[EEPROM_NETMAN0] & NETMAN_LINK) cmr |= LINK;
- if (eeprom_image[EEPROM_MISC0] & _0WS_ENA) cmr |= _0WS;
- }
- if (eeprom_image[EEPROM_SETUP] & SETUP_DRAM) cmr |= DRAM;
- outb(cmr, EWRK3_CMR);
-
- cr = inb(EWRK3_CR); /* Set up the Control Register */
- cr |= eeprom_image[EEPROM_SETUP] & SETUP_APD;
- if (cr & SETUP_APD) cr |= eeprom_image[EEPROM_SETUP] & SETUP_PS;
- cr |= eeprom_image[EEPROM_MISC0] & FAST_BUS;
- cr |= eeprom_image[EEPROM_MISC0] & ENA_16;
- outb(cr, EWRK3_CR);
-
- /*
- ** Determine the base address and window length for the EWRK3
- ** RAM from the memory base register.
- */
- mem_start = inb(EWRK3_MBR);
- shmem_length = 0;
- if (mem_start != 0) {
- if ((mem_start >= 0x0a) && (mem_start <= 0x0f)) {
- mem_start *= SHMEM_64K;
- shmem_length = SHMEM_64K;
- } else if ((mem_start >= 0x14) && (mem_start <= 0x1f)) {
- mem_start *= SHMEM_32K;
- shmem_length = SHMEM_32K;
- } else if ((mem_start >= 0x40) && (mem_start <= 0xff)) {
- mem_start = mem_start * SHMEM_2K + 0x80000;
- shmem_length = SHMEM_2K;
- } else {
- status = -ENXIO;
- }
- }
-
- /*
- ** See the top of this source code for comments about
- ** uncommenting this line.
- */
- /* FORCE_2K_MODE;*/
-
- if (!status) {
- if (hard_strapped) {
- printk(" is hard strapped.\n");
- } else if (mem_start) {
- printk(" has a %dk RAM window", (int)(shmem_length >> 10));
- printk(" at 0x%.5lx", mem_start);
- } else {
- printk(" is in I/O only mode");
- }
-
- /* private area & initialise */
- dev->priv = (void *) kmalloc(sizeof(struct ewrk3_private),
- GFP_KERNEL);
- lp = (struct ewrk3_private *)dev->priv;
- memset(dev->priv, 0, sizeof(struct ewrk3_private));
- lp->shmem_base = mem_start;
- lp->shmem_length = shmem_length;
- lp->lemac = lemac;
- lp->hard_strapped = hard_strapped;
-
- lp->mPage = 64;
- if (cmr & DRAM) lp->mPage <<= 1 ; /* 2 DRAMS on module */
-
- if (!hard_strapped) {
- /*
- ** Enable EWRK3 board interrupts for autoprobing
- */
- icr |= IE; /* Enable interrupts */
- outb(icr, EWRK3_ICR);
-
- /* The DMA channel may be passed in on this parameter. */
- dev->dma = 0;
-
- /* To auto-IRQ we enable the initialization-done and DMA err,
- interrupts. For now we will always get a DMA error. */
- if (dev->irq < 2) {
- #ifndef MODULE
- unsigned char irqnum;
-
- autoirq_setup(0);
-
- /*
- ** Trigger a TNE interrupt.
- */
- icr |=TNEM;
- outb(1,EWRK3_TDQ); /* Write to the TX done queue */
- outb(icr, EWRK3_ICR); /* Unmask the TXD interrupt */
-
- irqnum = irq[((icr & IRQ_SEL) >> 4)];
-
- dev->irq = autoirq_report(1);
- if ((dev->irq) && (irqnum == dev->irq)) {
- printk(" and uses IRQ%d.\n", dev->irq);
- } else {
- if (!dev->irq) {
- printk(" and failed to detect IRQ line.\n");
- } else if ((irqnum == 1) && (lemac == LeMAC2)) {
- printk(" and an illegal IRQ line detected.\n");
- } else {
- printk(", but incorrect IRQ line detected.\n");
- }
- status = -ENXIO;
- }
-
- DISABLE_IRQs; /* Mask all interrupts */
-
- #endif /* MODULE */
- } else {
- printk(" and requires IRQ%d.\n", dev->irq);
- }
- }
- } else {
- status = -ENXIO;
- }
- }
- }
- } else {
- status = -ENXIO;
- }
- }
-
- if (!status) {
- if (ewrk3_debug > 0) {
- printk(version);
- }
-
- /* The EWRK3-specific entries in the device structure. */
- dev->open = &ewrk3_open;
- dev->hard_start_xmit = &ewrk3_queue_pkt;
- dev->stop = &ewrk3_close;
- dev->get_stats = &ewrk3_get_stats;
- #ifdef HAVE_MULTICAST
- dev->set_multicast_list = &set_multicast_list;
- #endif
- dev->do_ioctl = &ewrk3_ioctl;
-
- dev->mem_start = 0;
-
- /* Fill in the generic field of the device structure. */
- ether_setup(dev);
- }
- } else {
- status = -ENXIO;
- }
-
- return status;
- }
-
-
- static int
- ewrk3_open(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int i, iobase = dev->base_addr;
- int status = 0;
- unsigned char icr, csr;
-
- /*
- ** Stop the TX and RX...
- */
- STOP_EWRK3;
-
- if (!lp->hard_strapped) {
- if (request_irq(dev->irq, &ewrk3_interrupt, 0, "ewrk3")) {
- printk("ewrk3_open(): Requested IRQ%d is busy\n",dev->irq);
- status = -EAGAIN;
- } else {
-
- irq2dev_map[dev->irq] = dev;
-
- /*
- ** Re-initialize the EWRK3...
- */
- ewrk3_init(dev);
-
- if (ewrk3_debug > 1){
- printk("%s: ewrk3 open with irq %d\n",dev->name,dev->irq);
- printk("\tphysical address: ");
- for (i=0;i<6;i++){
- printk("%2.2x:",(short)dev->dev_addr[i]);
- }
- printk("\n");
- printk("\tchecked memory: 0x%08lx\n",mem_chkd);
- if (lp->shmem_length == 0) {
- printk("\tno shared memory, I/O only mode\n");
- } else {
- printk("\tstart of shared memory: 0x%08lx\n",lp->shmem_base);
- printk("\twindow length: 0x%04lx\n",lp->shmem_length);
- }
- printk("\t# of DRAMS: %d\n",((inb(EWRK3_CMR) & 0x02) ? 2 : 1));
- printk("\tcsr: 0x%02x\n", inb(EWRK3_CSR));
- printk("\tcr: 0x%02x\n", inb(EWRK3_CR));
- printk("\ticr: 0x%02x\n", inb(EWRK3_ICR));
- printk("\tcmr: 0x%02x\n", inb(EWRK3_CMR));
- printk("\tfmqc: 0x%02x\n", inb(EWRK3_FMQC));
- }
-
- dev->tbusy = 0;
- dev->start = 1;
- dev->interrupt = UNMASK_INTERRUPTS;
-
- /*
- ** Unmask EWRK3 board interrupts
- */
- icr = inb(EWRK3_ICR);
- ENABLE_IRQs;
-
- }
- } else {
- dev->start = 0;
- dev->tbusy = 1;
- printk("%s: ewrk3 available for hard strapped set up only.\n", dev->name);
- printk(" Run the 'ewrk3setup' utility or remove the hard straps.\n");
- }
-
- #ifdef MODULE
- MOD_INC_USE_COUNT;
- #endif
-
-
- return status;
- }
-
- /*
- ** Initialize the EtherWORKS 3 operating conditions
- */
- static void
- ewrk3_init(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- char csr, page;
- short iobase = dev->base_addr;
-
- /*
- ** Enable all multicasts
- */
- set_multicast_list(dev, HASH_TABLE_LEN, NULL);
-
- /*
- ** Clean out any remaining entries in all the queues here
- */
- while (inb(EWRK3_TQ));
- while (inb(EWRK3_TDQ));
- while (inb(EWRK3_RQ));
- while (inb(EWRK3_FMQ));
-
- /*
- ** Write a clean free memory queue
- */
- for (page=1;page<lp->mPage;page++) { /* Write the free page numbers */
- outb(page, EWRK3_FMQ); /* to the Free Memory Queue */
- }
-
- lp->lock = 0; /* Ensure there are no locks */
-
- START_EWRK3; /* Enable the TX and/or RX */
- }
-
- /*
- ** Writes a socket buffer to the free page queue
- */
- static int
- ewrk3_queue_pkt(struct sk_buff *skb, struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int iobase = dev->base_addr;
- int status = 0;
- unsigned char icr, csr;
-
- /* Transmitter timeout, serious problems. */
- if (dev->tbusy || lp->lock) {
- int tickssofar = jiffies - dev->trans_start;
- if (tickssofar < 10) {
- status = -1;
- } else if (!lp->hard_strapped) {
- printk("%s: transmit timed/locked out, status %04x, resetting.\n",
- dev->name, inb(EWRK3_CSR));
-
- /*
- ** Mask all board interrupts
- */
- DISABLE_IRQs;
-
- /*
- ** Stop the TX and RX...
- */
- STOP_EWRK3;
-
- ewrk3_init(dev);
-
- /*
- ** Unmask EWRK3 board interrupts
- */
- ENABLE_IRQs;
-
- dev->tbusy=0;
- dev->trans_start = jiffies;
- }
- } else if (skb == NULL) {
- dev_tint(dev);
- } else if (skb->len > 0) {
-
- /*
- ** Block a timer-based transmit from overlapping. This could better be
- ** done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
- */
- if (set_bit(0, (void*)&dev->tbusy) != 0)
- printk("%s: Transmitter access conflict.\n", dev->name);
-
- DISABLE_IRQs; /* So that the page # remains correct */
-
- /*
- ** Get a free page from the FMQ when resources are available
- */
- if (inb(EWRK3_FMQC) > 0) {
- unsigned char *buf;
- unsigned char page;
-
- if ((page = inb(EWRK3_FMQ)) < lp->mPage) {
- buf = NULL;
-
- /*
- ** Set up shared memory window and pointer into the window
- */
- while (set_bit(0, (void *)&lp->lock) != 0); /* Wait for lock to free */
- if (lp->shmem_length == IO_ONLY) {
- outb(page, EWRK3_IOPR);
- } else if (lp->shmem_length == SHMEM_2K) {
- buf = (char *) lp->shmem_base;
- outb(page, EWRK3_MPR);
- } else if (lp->shmem_length == SHMEM_32K) {
- buf = (char *)((((short)page << 11) & 0x7800) + lp->shmem_base);
- outb((page >> 4), EWRK3_MPR);
- } else if (lp->shmem_length == SHMEM_64K) {
- buf = (char *)((((short)page << 11) & 0xf800) + lp->shmem_base);
- outb((page >> 5), EWRK3_MPR);
- } else {
- status = -1;
- printk("%s: Oops - your private data area is hosed!\n",dev->name);
- }
-
- if (!status) {
-
- /*
- ** Set up the buffer control structures and copy the data from
- ** the socket buffer to the shared memory .
- */
-
- if (lp->shmem_length == IO_ONLY) {
- int i;
- unsigned char *p = skb->data;
-
- outb((char)(QMODE | PAD | IFC), EWRK3_DATA);
- outb((char)(skb->len & 0xff), EWRK3_DATA);
- outb((char)((skb->len >> 8) & 0xff), EWRK3_DATA);
- outb((char)0x04, EWRK3_DATA);
- for (i=0; i<skb->len; i++) {
- outb(*p++, EWRK3_DATA);
- }
- outb(page, EWRK3_TQ); /* Start sending pkt */
- } else {
- *buf++ = (char)(QMODE | PAD | IFC); /* control byte */
- *buf++ = (char)(skb->len & 0xff); /* length (16 bit xfer)*/
- if (lp->txc) {
- *buf++ = (char)(((skb->len >> 8) & 0xff) | XCT);
- *buf++ = 0x04; /* index byte */
- *(buf + skb->len) = 0x00; /* Write the XCT flag */
- memcpy(buf, skb->data, PRELOAD); /* Write PRELOAD bytes */
- outb(page, EWRK3_TQ); /* Start sending pkt */
- memcpy(buf + PRELOAD, skb->data + PRELOAD, skb->len - PRELOAD);
- *(buf + skb->len) = 0xff; /* Write the XCT flag */
- } else {
- *buf++ = (char)((skb->len >> 8) & 0xff);
- *buf++ = 0x04; /* index byte */
- memcpy(buf, skb->data, skb->len); /* Write data bytes */
- outb(page, EWRK3_TQ); /* Start sending pkt */
- }
- }
-
- dev->trans_start = jiffies;
-
- dev_kfree_skb (skb, FREE_WRITE);
-
- } else { /* return unused page to the free memory queue */
- outb(page, EWRK3_FMQ);
- }
- lp->lock = 0; /* unlock the page register */
- } else {
- printk("ewrk3_queue_pkt(): Invalid free memory page (%d).\n",
- (unsigned char) page);
- }
- } else {
- printk("ewrk3_queue_pkt(): No free resources...\n");
- printk("ewrk3_queue_pkt(): CSR: %02x ICR: %02x FMQC: %02x\n",inb(EWRK3_CSR),inb(EWRK3_ICR),inb(EWRK3_FMQC));
- }
-
- /* Check for free resources: clear 'tbusy' if there are some */
- if (inb(EWRK3_FMQC) > 0) {
- dev->tbusy = 0;
- }
-
- ENABLE_IRQs;
- }
-
- return status;
- }
-
- /*
- ** The EWRK3 interrupt handler.
- */
- static void
- ewrk3_interrupt(int irq, struct pt_regs * regs)
- {
- struct device *dev = (struct device *)(irq2dev_map[irq]);
- struct ewrk3_private *lp;
- int iobase;
- unsigned char icr, cr, csr;
-
- if (dev == NULL) {
- printk ("ewrk3_interrupt(): irq %d for unknown device.\n", irq);
- } else {
- lp = (struct ewrk3_private *)dev->priv;
- iobase = dev->base_addr;
-
- if (dev->interrupt)
- printk("%s: Re-entering the interrupt handler.\n", dev->name);
-
- dev->interrupt = MASK_INTERRUPTS;
-
- /* get the interrupt information */
- csr = inb(EWRK3_CSR);
-
- /*
- ** Mask the EWRK3 board interrupts and turn on the LED
- */
- DISABLE_IRQs;
-
- cr = inb(EWRK3_CR);
- cr |= LED;
- outb(cr, EWRK3_CR);
-
- if (csr & RNE) /* Rx interrupt (packet[s] arrived) */
- ewrk3_rx(dev);
-
- if (csr & TNE) /* Tx interrupt (packet sent) */
- ewrk3_tx(dev);
-
- /*
- ** Now deal with the TX/RX disable flags. These are set when there
- ** are no more resources. If resources free up then enable these
- ** interrupts, otherwise mask them - failure to do this will result
- ** in the system hanging in an interrupt loop.
- */
- if (inb(EWRK3_FMQC)) { /* any resources available? */
- irq_mask |= TXDM|RXDM; /* enable the interrupt source */
- csr &= ~(TXD|RXD); /* ensure restart of a stalled TX or RX */
- outb(csr, EWRK3_CSR);
- dev->tbusy = 0; /* clear TX busy flag */
- mark_bh(NET_BH);
- } else {
- irq_mask &= ~(TXDM|RXDM); /* disable the interrupt source */
- }
-
- /* Unmask the EWRK3 board interrupts and turn off the LED */
- cr &= ~LED;
- outb(cr, EWRK3_CR);
-
- dev->interrupt = UNMASK_INTERRUPTS;
-
- ENABLE_IRQs;
- }
-
- return;
- }
-
- static int
- ewrk3_rx(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int i, iobase = dev->base_addr;
- unsigned char page, tmpPage = 0, tmpLock = 0, *buf;
- int status = 0;
-
- while (inb(EWRK3_RQC) && !status) { /* Whilst there's incoming data */
- if ((page = inb(EWRK3_RQ)) < lp->mPage) {/* Get next entry's buffer page */
- buf = NULL;
-
- /*
- ** Preempt any process using the current page register. Check for
- ** an existing lock to reduce time taken in I/O transactions.
- */
- if ((tmpLock = set_bit(0, (void *)&lp->lock)) == 1) { /* Assert lock */
- if (lp->shmem_length == IO_ONLY) { /* Get existing page */
- tmpPage = inb(EWRK3_IOPR);
- } else {
- tmpPage = inb(EWRK3_MPR);
- }
- }
-
- /*
- ** Set up shared memory window and pointer into the window
- */
- if (lp->shmem_length == IO_ONLY) {
- outb(page, EWRK3_IOPR);
- } else if (lp->shmem_length == SHMEM_2K) {
- buf = (char *) lp->shmem_base;
- outb(page, EWRK3_MPR);
- } else if (lp->shmem_length == SHMEM_32K) {
- buf = (char *)((((short)page << 11) & 0x7800) + lp->shmem_base);
- outb((page >> 4), EWRK3_MPR);
- } else if (lp->shmem_length == SHMEM_64K) {
- buf = (char *)((((short)page << 11) & 0xf800) + lp->shmem_base);
- outb((page >> 5), EWRK3_MPR);
- } else {
- status = -1;
- printk("%s: Oops - your private data area is hosed!\n",dev->name);
- }
-
- if (!status) {
- char rx_status;
- int pkt_len;
-
- if (lp->shmem_length == IO_ONLY) {
- rx_status = inb(EWRK3_DATA);
- pkt_len = inb(EWRK3_DATA);
- pkt_len |= ((unsigned short)inb(EWRK3_DATA) << 8);
- } else {
- rx_status = (char)(*buf++);
- pkt_len = (short)(*buf+((*(buf+1))<<8));
- buf+=3;
- }
-
- if (!(rx_status & ROK)) { /* There was an error. */
- lp->stats.rx_errors++; /* Update the error stats. */
- if (rx_status & DBE) lp->stats.rx_frame_errors++;
- if (rx_status & CRC) lp->stats.rx_crc_errors++;
- if (rx_status & PLL) lp->stats.rx_fifo_errors++;
- } else {
- struct sk_buff *skb;
-
- if ((skb = alloc_skb(pkt_len, GFP_ATOMIC)) != NULL) {
- skb->len = pkt_len;
- skb->dev = dev;
-
- if (lp->shmem_length == IO_ONLY) {
- unsigned char *p = skb->data;
-
- *p = inb(EWRK3_DATA); /* dummy read */
- for (i=0; i<skb->len; i++) {
- *p++ = inb(EWRK3_DATA);
- }
- } else {
- memcpy(skb->data, buf, pkt_len);
- }
-
- /*
- ** Notify the upper protocol layers that there is another
- ** packet to handle
- */
- netif_rx(skb);
-
- /*
- ** Update stats
- */
- lp->stats.rx_packets++;
- for (i=1; i<EWRK3_PKT_STAT_SZ-1; i++) {
- if (pkt_len < i*EWRK3_PKT_BIN_SZ) {
- lp->pktStats.bins[i]++;
- i = EWRK3_PKT_STAT_SZ;
- }
- }
- buf = skb->data; /* Look at the dest addr */
- if (buf[0] & 0x01) { /* Multicast/Broadcast */
- if ((*(long *)&buf[0] == -1) && (*(short *)&buf[4] == -1)) {
- lp->pktStats.broadcast++;
- } else {
- lp->pktStats.multicast++;
- }
- } else if ((*(long *)&buf[0] == *(long *)&dev->dev_addr[0]) &&
- (*(short *)&buf[4] == *(short *)&dev->dev_addr[4])) {
- lp->pktStats.unicast++;
- }
-
- lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */
- if (lp->pktStats.bins[0] == 0) { /* Reset counters */
- memset(&lp->pktStats, 0, sizeof(lp->pktStats));
- }
- } else {
- printk("%s: Insufficient memory; nuking packet.\n", dev->name);
- lp->stats.rx_dropped++; /* Really, deferred. */
- break;
- }
- }
- }
- /*
- ** Return the received buffer to the free memory queue
- */
- outb(page, EWRK3_FMQ);
-
- if (tmpLock) { /* If a lock was preempted */
- if (lp->shmem_length == IO_ONLY) { /* Replace old page */
- outb(tmpPage, EWRK3_IOPR);
- } else {
- outb(tmpPage, EWRK3_MPR);
- }
- }
- lp->lock = 0; /* Unlock the page register */
- } else {
- printk("ewrk3_rx(): Illegal page number, page %d\n",page);
- printk("ewrk3_rx(): CSR: %02x ICR: %02x FMQC: %02x\n",inb(EWRK3_CSR),inb(EWRK3_ICR),inb(EWRK3_FMQC));
- }
- }
- return status;
- }
-
- /*
- ** Buffer sent - check for TX buffer errors.
- */
- static int
- ewrk3_tx(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int iobase = dev->base_addr;
- unsigned char tx_status;
-
- while ((tx_status = inb(EWRK3_TDQ)) > 0) { /* Whilst there's old buffers */
- if (tx_status & VSTS) { /* The status is valid */
- if (tx_status & MAC_TXE) {
- lp->stats.tx_errors++;
- if (tx_status & MAC_NCL) lp->stats.tx_carrier_errors++;
- if (tx_status & MAC_LCL) lp->stats.tx_window_errors++;
- if (tx_status & MAC_CTU) {
- if ((tx_status & MAC_COLL) ^ MAC_XUR) {
- lp->pktStats.tx_underruns++;
- } else {
- lp->pktStats.excessive_underruns++;
- }
- } else if (tx_status & MAC_COLL) {
- if ((tx_status & MAC_COLL) ^ MAC_XCOLL) {
- lp->stats.collisions++;
- } else {
- lp->pktStats.excessive_collisions++;
- }
- }
- } else {
- lp->stats.tx_packets++;
- }
- }
- }
-
- return 0;
- }
-
- static int
- ewrk3_close(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int iobase = dev->base_addr;
- unsigned char icr, csr;
-
- dev->start = 0;
- dev->tbusy = 1;
-
- if (ewrk3_debug > 1) {
- printk("%s: Shutting down ethercard, status was %2.2x.\n",
- dev->name, inb(EWRK3_CSR));
- }
-
- /*
- ** We stop the EWRK3 here... mask interrupts and stop TX & RX
- */
- DISABLE_IRQs;
-
- STOP_EWRK3;
-
- /*
- ** Clean out the TX and RX queues here (note that one entry
- ** may get added to either the TXD or RX queues if the the TX or RX
- ** just starts processing a packet before the STOP_EWRK3 command
- ** is received. This will be flushed in the ewrk3_open() call).
- */
- while (inb(EWRK3_TQ));
- while (inb(EWRK3_TDQ));
- while (inb(EWRK3_RQ));
-
- if (!lp->hard_strapped) {
- free_irq(dev->irq);
-
- irq2dev_map[dev->irq] = 0;
- }
-
- #ifdef MODULE
- MOD_DEC_USE_COUNT;
- #endif
-
- return 0;
- }
-
- static struct enet_statistics *
- ewrk3_get_stats(struct device *dev)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
-
- /* Null body since there is no framing error counter */
-
- return &lp->stats;
- }
-
- /*
- ** Set or clear the multicast filter for this adaptor.
- ** num_addrs == -1 Promiscuous mode, receive all packets
- ** num_addrs == 0 Normal mode, clear multicast list
- ** num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- ** best-effort filtering.
- */
- static void
- set_multicast_list(struct device *dev, int num_addrs, void *addrs)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int iobase = dev->base_addr;
- char *multicast_table;
- unsigned char csr;
-
- csr = inb(EWRK3_CSR);
-
- if (lp->shmem_length == IO_ONLY) {
- multicast_table = (char *) PAGE0_HTE;
- } else {
- multicast_table = (char *)(lp->shmem_base + PAGE0_HTE);
- }
-
- if (num_addrs >= 0) {
- SetMulticastFilter(dev, num_addrs, (char *)addrs, multicast_table);
- csr &= ~PME;
- csr |= MCE;
- outb(csr, EWRK3_CSR);
- } else { /* set promiscuous mode */
- csr |= PME;
- csr &= ~MCE;
- outb(csr, EWRK3_CSR);
- }
- }
-
- /*
- ** Calculate the hash code and update the logical address filter
- ** from a list of ethernet multicast addresses.
- ** Little endian crc one liner from Matt Thomas, DEC.
- **
- ** Note that when clearing the table, the broadcast bit must remain asserted
- ** to receive broadcast messages.
- */
- static void SetMulticastFilter(struct device *dev, int num_addrs, char *addrs, char *multicast_table)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- int i, iobase = dev->base_addr;
- char j, bit, byte;
- short *p = (short *) multicast_table;
- u_short hashcode;
- u_long crc, poly = CRC_POLYNOMIAL_LE;
-
- while (set_bit(0, (void *)&lp->lock) != 0); /* Wait for lock to free */
-
- if (lp->shmem_length == IO_ONLY) {
- outb(0, EWRK3_IOPR);
- outw((short)((long)multicast_table), EWRK3_PIR1);
- } else {
- outb(0, EWRK3_MPR);
- }
-
- if (num_addrs == HASH_TABLE_LEN) {
- for (i=0; i<(HASH_TABLE_LEN >> 3); i++) {
- if (lp->shmem_length == IO_ONLY) {
- outb(0xff, EWRK3_DATA);
- } else { /* memset didn't work here */
- *p++ = 0xffff;
- i++;
- }
- }
- } else {
- /* Clear table except for broadcast bit */
- if (lp->shmem_length == IO_ONLY) {
- for (i=0; i<(HASH_TABLE_LEN >> 4) - 1; i++) {
- outb(0x00, EWRK3_DATA);
- }
- outb(0x80, EWRK3_DATA); i++; /* insert the broadcast bit */
- for (; i<(HASH_TABLE_LEN >> 3); i++) {
- outb(0x00, EWRK3_DATA);
- }
- } else {
- memset(multicast_table, 0, (HASH_TABLE_LEN >> 3));
- *(multicast_table + (HASH_TABLE_LEN >> 4) - 1) = 0x80;
- }
-
- /* Update table */
- for (i=0;i<num_addrs;i++) { /* for each address in the list */
- if ((*addrs & 0x01) == 1) { /* multicast address? */
- crc = 0xffffffff; /* init CRC for each address */
- for (byte=0;byte<ETH_ALEN;byte++) { /* for each address byte */
- /* process each address bit */
- for (bit = *addrs++,j=0;j<8;j++, bit>>=1) {
- crc = (crc >> 1) ^ (((crc ^ bit) & 0x01) ? poly : 0);
- }
- }
- hashcode = crc & ((1 << 9) - 1); /* hashcode is 9 LSb of CRC */
-
- byte = hashcode >> 3; /* bit[3-8] -> byte in filter */
- bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */
-
- if (lp->shmem_length == IO_ONLY) {
- unsigned char tmp;
-
- outw((short)((long)multicast_table) + byte, EWRK3_PIR1);
- tmp = inb(EWRK3_DATA);
- tmp |= bit;
- outw((short)((long)multicast_table) + byte, EWRK3_PIR1);
- outb(tmp, EWRK3_DATA);
- } else {
- multicast_table[byte] |= bit;
- }
- } else { /* skip this address */
- addrs += ETH_ALEN;
- }
- }
- }
-
- lp->lock = 0; /* Unlock the page register */
-
- return;
- }
-
- #ifndef MODULE
- /*
- ** ISA bus I/O device probe
- */
- static struct device *isa_probe(struct device *dev)
- {
- int i, iobase, status;
- unsigned long int tmp = mem_chkd;
-
- for (status = -ENODEV, iobase = EWRK3_IO_BASE,i = 0;
- i < 24;
- iobase += EWRK3_IOP_INC, i++) {
- if (tmp & 0x01) {
- /* Anything else registered here? */
- if (!check_region(iobase, EWRK3_TOTAL_SIZE)) {
- if (DevicePresent(iobase) == 0) {
- /*
- ** Device found. Mark its (I/O) location for future reference. Only 24
- ** EtherWORKS devices can exist between 0x100 and 0x3e0.
- */
- request_region(iobase, EWRK3_IOP_INC, "ewrk3");
- if (num_ewrk3s > 0) { /* only gets here in autoprobe */
- dev = alloc_device(dev, iobase);
- } else {
- if ((status = ewrk3_hw_init(dev, iobase)) == 0) {
- num_ewrk3s++;
- }
- }
- num_eth++;
- } else {
- mem_chkd &= ~(0x01 << ((iobase - EWRK3_IO_BASE)/EWRK3_IOP_INC));
- }
- } else {
- printk("%s: ewrk3_probe(): Detected a device already registered at 0x%02x\n", dev->name, iobase);
- mem_chkd &= ~(0x01 << ((iobase - EWRK3_IO_BASE)/EWRK3_IOP_INC));
- }
- }
- tmp >>= 1;
- }
-
- return dev;
- }
-
- /*
- ** EISA bus I/O device probe. Probe from slot 1 since slot 0 is usually
- ** the motherboard.
- */
- static struct device *eisa_probe(struct device *dev)
- {
- int i, iobase = EWRK3_EISA_IO_PORTS;
- int status;
-
- iobase+=EISA_SLOT_INC; /* get the first slot address */
- for (status = -ENODEV, i=1; i<MAX_EISA_SLOTS; i++, iobase+=EISA_SLOT_INC) {
-
- /* Anything else registered here? */
- if (!check_region(iobase, EWRK3_TOTAL_SIZE)) {
- if (DevicePresent(iobase) == 0) {
- /*
- ** Device found. Mark its slot location for future reference. Only 7
- ** EtherWORKS devices can exist in EISA space....
- */
- mem_chkd |= (0x01 << (i + 24));
- request_region(iobase, EWRK3_IOP_INC, "ewrk3");
- if (num_ewrk3s > 0) { /* only gets here in autoprobe */
- dev = alloc_device(dev, iobase);
- } else {
- if ((status = ewrk3_hw_init(dev, iobase)) == 0) {
- num_ewrk3s++;
- }
- }
- num_eth++;
- }
- }
- }
- return dev;
- }
-
- /*
- ** Allocate the device by pointing to the next available space in the
- ** device structure. Should one not be available, it is created.
- */
- static struct device *alloc_device(struct device *dev, int iobase)
- {
- /*
- ** Check the device structures for an end of list or unused device
- */
- while (dev->next != NULL) {
- if (dev->next->base_addr == 0xffe0) break;
- dev = dev->next; /* walk through eth device list */
- num_eth++; /* increment eth device number */
- }
-
- /*
- ** If no more device structures, malloc one up. If memory could
- ** not be allocated, print an error message.
- */
- if (dev->next == NULL) {
- dev->next = (struct device *)kmalloc(sizeof(struct device) + 8,
- GFP_KERNEL);
- if (dev->next == NULL) {
- printk("eth%d: Device not initialised, insufficient memory\n",
- num_eth);
- }
- }
-
- /*
- ** If the memory was allocated, point to the new memory area
- ** and initialize it (name, I/O address, next device (NULL) and
- ** initialisation probe routine).
- */
- if ((dev->next != NULL) &&
- (num_eth > 0) && (num_eth < 9999)) {
- dev = dev->next; /* point to the new device */
- dev->name = (char *)(dev + sizeof(struct device));
- sprintf(dev->name,"eth%d", num_eth);/* New device name */
- dev->base_addr = iobase; /* assign the io address */
- dev->next = NULL; /* mark the end of list */
- dev->init = &ewrk3_probe; /* initialisation routine */
- num_ewrk3s++;
- }
-
- return dev;
- }
- #endif /* MODULE */
-
- /*
- ** Read the EWRK3 EEPROM using this routine
- */
- static int Read_EEPROM(short iobase, unsigned char eaddr)
- {
- int i;
-
- outb((eaddr & 0x3f), EWRK3_PIR1); /* set up 6 bits of address info */
- outb(EEPROM_RD, EWRK3_IOPR); /* issue read command */
- for (i=0;i<5000;i++) inb(EWRK3_CSR); /* wait 1msec */
-
- return inw(EWRK3_EPROM1); /* 16 bits data return */
- }
-
- /*
- ** Write the EWRK3 EEPROM using this routine
- */
- static int Write_EEPROM(short data, short iobase, unsigned char eaddr)
- {
- int i;
-
- outb(EEPROM_WR_EN, EWRK3_IOPR); /* issue write enable command */
- for (i=0;i<5000;i++) inb(EWRK3_CSR); /* wait 1msec */
- outw(data, EWRK3_EPROM1); /* write data to register */
- outb((eaddr & 0x3f), EWRK3_PIR1); /* set up 6 bits of address info */
- outb(EEPROM_WR, EWRK3_IOPR); /* issue write command */
- for (i=0;i<75000;i++) inb(EWRK3_CSR); /* wait 15msec */
- outb(EEPROM_WR_DIS, EWRK3_IOPR); /* issue write disable command */
- for (i=0;i<5000;i++) inb(EWRK3_CSR); /* wait 1msec */
-
- return 0;
- }
-
- /*
- ** Look for a particular board name in the on-board EEPROM.
- */
- static void EthwrkSignature(char *name, char *eeprom_image)
- {
- unsigned long i,j,k;
- char signatures[][EWRK3_NAME_LENGTH] = EWRK3_SIGNATURE;
-
- strcpy(name, "");
- for (i=0;*signatures[i] != '\0' && *name == '\0';i++) {
- for (j=EEPROM_PNAME7,k=0;j<=EEPROM_PNAME0 && k<strlen(signatures[i]);j++) {
- if (signatures[i][k] == eeprom_image[j]) { /* track signature */
- k++;
- } else { /* lost signature; begin search again */
- k=0;
- }
- }
- if (k == strlen(signatures[i])) {
- for (k=0; k<EWRK3_NAME_LENGTH; k++) {
- name[k] = eeprom_image[EEPROM_PNAME7 + k];
- name[EWRK3_NAME_LENGTH] = '\0';
- }
- }
- }
-
- return; /* return the device name string */
- }
-
- /*
- ** Look for a special sequence in the Ethernet station address PROM that
- ** is common across all EWRK3 products.
- */
-
- static int DevicePresent(short iobase)
- {
- static short fp=1,sigLength=0;
- static char devSig[] = PROBE_SEQUENCE;
- char data;
- int i, j, status = 0;
- static char asc2hex(char value);
-
- /*
- ** Convert the ascii signature to a hex equivalent & pack in place
- */
- if (fp) { /* only do this once!... */
- for (i=0,j=0;devSig[i] != '\0' && !status;i+=2,j++) {
- if ((devSig[i]=asc2hex(devSig[i]))>=0) {
- devSig[i]<<=4;
- if((devSig[i+1]=asc2hex(devSig[i+1]))>=0){
- devSig[j]=devSig[i]+devSig[i+1];
- } else {
- status= -1;
- }
- } else {
- status= -1;
- }
- }
- sigLength=j;
- fp = 0;
- }
-
- /*
- ** Search the Ethernet address ROM for the signature. Since the ROM address
- ** counter can start at an arbitrary point, the search must include the entire
- ** probe sequence length plus the (length_of_the_signature - 1).
- ** Stop the search IMMEDIATELY after the signature is found so that the
- ** PROM address counter is correctly positioned at the start of the
- ** ethernet address for later read out.
- */
- if (!status) {
- for (i=0,j=0;j<sigLength && i<PROBE_LENGTH+sigLength-1;i++) {
- data = inb(EWRK3_APROM);
- if (devSig[j] == data) { /* track signature */
- j++;
- } else { /* lost signature; begin search again */
- j=0;
- }
- }
-
- if (j!=sigLength) {
- status = -ENODEV; /* search failed */
- }
- }
-
- return status;
- }
-
- static unsigned char aprom_crc(struct device *dev, unsigned char *eeprom_image, char chipType)
- {
- long k;
- unsigned short j,chksum;
- unsigned char crc, lfsr, sd, status = 0;
- int iobase = dev->base_addr;
-
- if (chipType == LeMAC2) {
- for (crc=0x6a, j=0; j<ETH_ALEN; j++) {
- for (sd=inb(EWRK3_PAR0+j), k=0; k<8; k++, sd >>= 1) {
- lfsr = ((((crc & 0x02) >> 1) ^ (crc & 0x01)) ^ (sd & 0x01)) << 7;
- crc = (crc >> 1) + lfsr;
- }
- }
- if (crc != eeprom_image[EEPROM_PA_CRC]) status = -1;
- } else {
- for (k=0,j=0;j<3;j++) {
- k <<= 1 ;
- if (k > 0xffff) k-=0xffff;
- k += inw(EWRK3_PAR0 + (j<<1));
- if (k > 0xffff) k-=0xffff;
- }
- if (k == 0xffff) k=0;
- chksum = inb(EWRK3_APROM);
- chksum |= (inb(EWRK3_APROM)<<8);
- if (k != chksum) status = -1;
- }
-
- return status;
- }
-
- /*
- ** Perform IOCTL call functions here. Some are privileged operations and the
- ** effective uid is checked in those cases.
- */
- static int ewrk3_ioctl(struct device *dev, struct ifreq *rq, int cmd)
- {
- struct ewrk3_private *lp = (struct ewrk3_private *)dev->priv;
- struct ewrk3_ioctl *ioc = (struct ewrk3_ioctl *) &rq->ifr_data;
- int i, j, iobase = dev->base_addr, status = 0;
- unsigned char csr;
- union {
- unsigned char addr[HASH_TABLE_LEN * ETH_ALEN];
- unsigned short val[(HASH_TABLE_LEN * ETH_ALEN) >> 1];
- } tmp;
-
- switch(ioc->cmd) {
- case EWRK3_GET_HWADDR: /* Get the hardware address */
- for (i=0; i<ETH_ALEN; i++) {
- tmp.addr[i] = dev->dev_addr[i];
- }
- ioc->len = ETH_ALEN;
- memcpy_tofs(ioc->data, tmp.addr, ioc->len);
-
- break;
- case EWRK3_SET_HWADDR: /* Set the hardware address */
- if (suser()) {
- csr = inb(EWRK3_CSR);
- csr |= (TXD|RXD);
- outb(csr, EWRK3_CSR); /* Disable the TX and RX */
-
- memcpy_fromfs(tmp.addr,ioc->data,ETH_ALEN);
- for (i=0; i<ETH_ALEN; i++) {
- dev->dev_addr[i] = tmp.addr[i];
- outb(tmp.addr[i], EWRK3_PAR0 + i);
- }
-
- csr &= ~(TXD|RXD); /* Enable the TX and RX */
- outb(csr, EWRK3_CSR);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_SET_PROM: /* Set Promiscuous Mode */
- if (suser()) {
- csr = inb(EWRK3_CSR);
- csr |= PME;
- csr &= ~MCE;
- outb(csr, EWRK3_CSR);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_CLR_PROM: /* Clear Promiscuous Mode */
- if (suser()) {
- csr = inb(EWRK3_CSR);
- csr &= ~PME;
- outb(csr, EWRK3_CSR);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_SAY_BOO: /* Say "Boo!" to the kernel log file */
- printk("%s: Boo!\n", dev->name);
-
- break;
- case EWRK3_GET_MCA: /* Get the multicast address table */
- while (set_bit(0, (void *)&lp->lock) != 0); /* Wait for lock to free */
- if (lp->shmem_length == IO_ONLY) {
- outb(0, EWRK3_IOPR);
- outw(PAGE0_HTE, EWRK3_PIR1);
- for (i=0; i<(HASH_TABLE_LEN >> 3); i++) {
- tmp.addr[i] = inb(EWRK3_DATA);
- }
- } else {
- outb(0, EWRK3_MPR);
- memcpy(tmp.addr, (char *)(lp->shmem_base + PAGE0_HTE), (HASH_TABLE_LEN >> 3));
- }
- ioc->len = (HASH_TABLE_LEN >> 3);
- memcpy_tofs(ioc->data, tmp.addr, ioc->len);
- lp->lock = 0; /* Unlock the page register */
-
- break;
- case EWRK3_SET_MCA: /* Set a multicast address */
- if (suser()) {
- if (ioc->len != HASH_TABLE_LEN) { /* MCA changes */
- memcpy_fromfs(tmp.addr, ioc->data, ETH_ALEN * ioc->len);
- }
- set_multicast_list(dev, ioc->len, tmp.addr);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_CLR_MCA: /* Clear all multicast addresses */
- if (suser()) {
- set_multicast_list(dev, 0, NULL);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_MCA_EN: /* Enable multicast addressing */
- if (suser()) {
- csr = inb(EWRK3_CSR);
- csr |= MCE;
- csr &= ~PME;
- outb(csr, EWRK3_CSR);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_GET_STATS: /* Get the driver statistics */
- cli();
- memcpy_tofs(ioc->data, &lp->pktStats, sizeof(lp->pktStats));
- ioc->len = EWRK3_PKT_STAT_SZ;
- sti();
-
- break;
- case EWRK3_CLR_STATS: /* Zero out the driver statistics */
- if (suser()) {
- cli();
- memset(&lp->pktStats, 0, sizeof(lp->pktStats));
- sti();
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_GET_CSR: /* Get the CSR Register contents */
- tmp.addr[0] = inb(EWRK3_CSR);
- memcpy_tofs(ioc->data, tmp.addr, 1);
-
- break;
- case EWRK3_SET_CSR: /* Set the CSR Register contents */
- if (suser()) {
- memcpy_fromfs(tmp.addr, ioc->data, 1);
- outb(tmp.addr[0], EWRK3_CSR);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_GET_EEPROM: /* Get the EEPROM contents */
- if (suser()) {
- for (i=0; i<(EEPROM_MAX>>1); i++) {
- tmp.val[i] = (short)Read_EEPROM(iobase, i);
- }
- i = EEPROM_MAX;
- tmp.addr[i++] = inb(EWRK3_CMR); /* Config/Management Reg. */
- for (j=0;j<ETH_ALEN;j++) {
- tmp.addr[i++] = inb(EWRK3_PAR0 + j);
- }
- ioc->len = EEPROM_MAX + 1 + ETH_ALEN;
- memcpy_tofs(ioc->data, tmp.addr, ioc->len);
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_SET_EEPROM: /* Set the EEPROM contents */
- if (suser()) {
- memcpy_fromfs(tmp.addr, ioc->data, EEPROM_MAX);
- for (i=0; i<(EEPROM_MAX>>1); i++) {
- Write_EEPROM(tmp.val[i], iobase, i);
- }
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_GET_CMR: /* Get the CMR Register contents */
- tmp.addr[0] = inb(EWRK3_CMR);
- memcpy_tofs(ioc->data, tmp.addr, 1);
-
- break;
- case EWRK3_SET_TX_CUT_THRU: /* Set TX cut through mode */
- if (suser()) {
- lp->txc = 1;
- } else {
- status = -EPERM;
- }
-
- break;
- case EWRK3_CLR_TX_CUT_THRU: /* Clear TX cut through mode */
- if (suser()) {
- lp->txc = 0;
- } else {
- status = -EPERM;
- }
-
- break;
- default:
- status = -EOPNOTSUPP;
- }
-
- return status;
- }
-
- static char asc2hex(char value)
- {
- value -= 0x30; /* normalise to 0..9 range */
- if (value >= 0) {
- if (value > 9) { /* but may not be 10..15 */
- value &= 0x1f; /* make A..F & a..f be the same */
- value -= 0x07; /* normalise to 10..15 range */
- if ((value < 0x0a) || (value > 0x0f)) { /* if outside range then... */
- value = -1; /* ...signal error */
- }
- }
- } else { /* outside 0..9 range... */
- value = -1; /* ...signal error */
- }
- return value; /* return hex char or error */
- }
-
- #ifdef MODULE
- char kernel_version[] = UTS_RELEASE;
- static struct device thisEthwrk = {
- " ", /* device name inserted by /linux/drivers/net/net_init.c */
- 0, 0, 0, 0,
- 0x300, 5, /* I/O address, IRQ */
- 0, 0, 0, NULL, ewrk3_probe };
-
- int io=0x300; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
- int irq=5; /* or use the insmod io= irq= options */
-
- int
- init_module(void)
- {
- thisEthwrk.base_addr=io;
- thisEthwrk.irq=irq;
- if (register_netdev(&thisEthwrk) != 0)
- return -EIO;
- return 0;
- }
-
- void
- cleanup_module(void)
- {
- if (MOD_IN_USE) {
- printk("%s: device busy, remove delayed\n",thisEthwrk.name);
- } else {
- unregister_netdev(&thisEthwrk);
- }
- }
- #endif /* MODULE */
-
-
- /*
- * Local variables:
- * kernel-compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O2 -m486 -c ewrk3.c"
- *
- * module-compile-command: "gcc -D__KERNEL__ -DMODULE -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O2 -m486 -c ewrk3.c"
- * End:
- */
-
-
-
-