| /* Intel EtherExpress 16 device driver for Linux |
| * |
| * Written by John Sullivan, 1995 |
| * based on original code by Donald Becker, with changes by |
| * Alan Cox and Pauline Middelink. |
| * |
| * Support for 8-bit mode by Zoltan Szilagyi <zoltans@cs.arizona.edu> |
| * |
| * Many modifications, and currently maintained, by |
| * Philip Blundell <philb@gnu.org> |
| * Added the Compaq LTE Alan Cox <alan@lxorguk.ukuu.org.uk> |
| * Added MCA support Adam Fritzler |
| * |
| * Note - this driver is experimental still - it has problems on faster |
| * machines. Someone needs to sit down and go through it line by line with |
| * a databook... |
| */ |
| |
| /* The EtherExpress 16 is a fairly simple card, based on a shared-memory |
| * design using the i82586 Ethernet coprocessor. It bears no relationship, |
| * as far as I know, to the similarly-named "EtherExpress Pro" range. |
| * |
| * Historically, Linux support for these cards has been very bad. However, |
| * things seem to be getting better slowly. |
| */ |
| |
| /* If your card is confused about what sort of interface it has (eg it |
| * persistently reports "10baseT" when none is fitted), running 'SOFTSET /BART' |
| * or 'SOFTSET /LISA' from DOS seems to help. |
| */ |
| |
| /* Here's the scoop on memory mapping. |
| * |
| * There are three ways to access EtherExpress card memory: either using the |
| * shared-memory mapping, or using PIO through the dataport, or using PIO |
| * through the "shadow memory" ports. |
| * |
| * The shadow memory system works by having the card map some of its memory |
| * as follows: |
| * |
| * (the low five bits of the SMPTR are ignored) |
| * |
| * base+0x4000..400f memory at SMPTR+0..15 |
| * base+0x8000..800f memory at SMPTR+16..31 |
| * base+0xc000..c007 dubious stuff (memory at SMPTR+16..23 apparently) |
| * base+0xc008..c00f memory at 0x0008..0x000f |
| * |
| * This last set (the one at c008) is particularly handy because the SCB |
| * lives at 0x0008. So that set of ports gives us easy random access to data |
| * in the SCB without having to mess around setting up pointers and the like. |
| * We always use this method to access the SCB (via the scb_xx() functions). |
| * |
| * Dataport access works by aiming the appropriate (read or write) pointer |
| * at the first address you're interested in, and then reading or writing from |
| * the dataport. The pointers auto-increment after each transfer. We use |
| * this for data transfer. |
| * |
| * We don't use the shared-memory system because it allegedly doesn't work on |
| * all cards, and because it's a bit more prone to go wrong (it's one more |
| * thing to configure...). |
| */ |
| |
| /* Known bugs: |
| * |
| * - The card seems to want to give us two interrupts every time something |
| * happens, where just one would be better. |
| */ |
| |
| /* |
| * |
| * Note by Zoltan Szilagyi 10-12-96: |
| * |
| * I've succeeded in eliminating the "CU wedged" messages, and hence the |
| * lockups, which were only occurring with cards running in 8-bit mode ("force |
| * 8-bit operation" in Intel's SoftSet utility). This version of the driver |
| * sets the 82586 and the ASIC to 8-bit mode at startup; it also stops the |
| * CU before submitting a packet for transmission, and then restarts it as soon |
| * as the process of handing the packet is complete. This is definitely an |
| * unnecessary slowdown if the card is running in 16-bit mode; therefore one |
| * should detect 16-bit vs 8-bit mode from the EEPROM settings and act |
| * accordingly. In 8-bit mode with this bugfix I'm getting about 150 K/s for |
| * ftp's, which is significantly better than I get in DOS, so the overhead of |
| * stopping and restarting the CU with each transmit is not prohibitive in |
| * practice. |
| * |
| * Update by David Woodhouse 11/5/99: |
| * |
| * I've seen "CU wedged" messages in 16-bit mode, on the Alpha architecture. |
| * I assume that this is because 16-bit accesses are actually handled as two |
| * 8-bit accesses. |
| */ |
| |
| #ifdef __alpha__ |
| #define LOCKUP16 1 |
| #endif |
| #ifndef LOCKUP16 |
| #define LOCKUP16 0 |
| #endif |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/fcntl.h> |
| #include <linux/interrupt.h> |
| #include <linux/ioport.h> |
| #include <linux/string.h> |
| #include <linux/in.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/slab.h> |
| #include <linux/mca-legacy.h> |
| #include <linux/spinlock.h> |
| #include <linux/bitops.h> |
| #include <linux/jiffies.h> |
| |
| #include <asm/system.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| |
| #ifndef NET_DEBUG |
| #define NET_DEBUG 4 |
| #endif |
| |
| #include "eexpress.h" |
| |
| #define EEXP_IO_EXTENT 16 |
| |
| /* |
| * Private data declarations |
| */ |
| |
| struct net_local |
| { |
| unsigned long last_tx; /* jiffies when last transmit started */ |
| unsigned long init_time; /* jiffies when eexp_hw_init586 called */ |
| unsigned short rx_first; /* first rx buf, same as RX_BUF_START */ |
| unsigned short rx_last; /* last rx buf */ |
| unsigned short rx_ptr; /* first rx buf to look at */ |
| unsigned short tx_head; /* next free tx buf */ |
| unsigned short tx_reap; /* first in-use tx buf */ |
| unsigned short tx_tail; /* previous tx buf to tx_head */ |
| unsigned short tx_link; /* last known-executing tx buf */ |
| unsigned short last_tx_restart; /* set to tx_link when we |
| restart the CU */ |
| unsigned char started; |
| unsigned short rx_buf_start; |
| unsigned short rx_buf_end; |
| unsigned short num_tx_bufs; |
| unsigned short num_rx_bufs; |
| unsigned char width; /* 0 for 16bit, 1 for 8bit */ |
| unsigned char was_promisc; |
| unsigned char old_mc_count; |
| spinlock_t lock; |
| }; |
| |
| /* This is the code and data that is downloaded to the EtherExpress card's |
| * memory at boot time. |
| */ |
| |
| static unsigned short start_code[] = { |
| /* 0x0000 */ |
| 0x0001, /* ISCP: busy - cleared after reset */ |
| 0x0008,0x0000,0x0000, /* offset,address (lo,hi) of SCB */ |
| |
| 0x0000,0x0000, /* SCB: status, commands */ |
| 0x0000,0x0000, /* links to first command block, |
| first receive descriptor */ |
| 0x0000,0x0000, /* CRC error, alignment error counts */ |
| 0x0000,0x0000, /* out of resources, overrun error counts */ |
| |
| 0x0000,0x0000, /* pad */ |
| 0x0000,0x0000, |
| |
| /* 0x20 -- start of 82586 CU program */ |
| #define CONF_LINK 0x20 |
| 0x0000,Cmd_Config, |
| 0x0032, /* link to next command */ |
| 0x080c, /* 12 bytes follow : fifo threshold=8 */ |
| 0x2e40, /* don't rx bad frames |
| * SRDY/ARDY => ext. sync. : preamble len=8 |
| * take addresses from data buffers |
| * 6 bytes/address |
| */ |
| 0x6000, /* default backoff method & priority |
| * interframe spacing = 0x60 */ |
| 0xf200, /* slot time=0x200 |
| * max collision retry = 0xf */ |
| #define CONF_PROMISC 0x2e |
| 0x0000, /* no HDLC : normal CRC : enable broadcast |
| * disable promiscuous/multicast modes */ |
| 0x003c, /* minimum frame length = 60 octets) */ |
| |
| 0x0000,Cmd_SetAddr, |
| 0x003e, /* link to next command */ |
| #define CONF_HWADDR 0x38 |
| 0x0000,0x0000,0x0000, /* hardware address placed here */ |
| |
| 0x0000,Cmd_MCast, |
| 0x0076, /* link to next command */ |
| #define CONF_NR_MULTICAST 0x44 |
| 0x0000, /* number of bytes in multicast address(es) */ |
| #define CONF_MULTICAST 0x46 |
| 0x0000, 0x0000, 0x0000, /* some addresses */ |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| 0x0000, 0x0000, 0x0000, |
| |
| #define CONF_DIAG_RESULT 0x76 |
| 0x0000, Cmd_Diag, |
| 0x007c, /* link to next command */ |
| |
| 0x0000,Cmd_TDR|Cmd_INT, |
| 0x0084, |
| #define CONF_TDR_RESULT 0x82 |
| 0x0000, |
| |
| 0x0000,Cmd_END|Cmd_Nop, /* end of configure sequence */ |
| 0x0084 /* dummy link */ |
| }; |
| |
| /* maps irq number to EtherExpress magic value */ |
| static char irqrmap[] = { 0,0,1,2,3,4,0,0,0,1,5,6,0,0,0,0 }; |
| |
| #ifdef CONFIG_MCA_LEGACY |
| /* mapping of the first four bits of the second POS register */ |
| static unsigned short mca_iomap[] = { |
| 0x270, 0x260, 0x250, 0x240, 0x230, 0x220, 0x210, 0x200, |
| 0x370, 0x360, 0x350, 0x340, 0x330, 0x320, 0x310, 0x300 |
| }; |
| /* bits 5-7 of the second POS register */ |
| static char mca_irqmap[] = { 12, 9, 3, 4, 5, 10, 11, 15 }; |
| #endif |
| |
| /* |
| * Prototypes for Linux interface |
| */ |
| |
| static int eexp_open(struct net_device *dev); |
| static int eexp_close(struct net_device *dev); |
| static void eexp_timeout(struct net_device *dev); |
| static netdev_tx_t eexp_xmit(struct sk_buff *buf, |
| struct net_device *dev); |
| |
| static irqreturn_t eexp_irq(int irq, void *dev_addr); |
| static void eexp_set_multicast(struct net_device *dev); |
| |
| /* |
| * Prototypes for hardware access functions |
| */ |
| |
| static void eexp_hw_rx_pio(struct net_device *dev); |
| static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, |
| unsigned short len); |
| static int eexp_hw_probe(struct net_device *dev,unsigned short ioaddr); |
| static unsigned short eexp_hw_readeeprom(unsigned short ioaddr, |
| unsigned char location); |
| |
| static unsigned short eexp_hw_lasttxstat(struct net_device *dev); |
| static void eexp_hw_txrestart(struct net_device *dev); |
| |
| static void eexp_hw_txinit (struct net_device *dev); |
| static void eexp_hw_rxinit (struct net_device *dev); |
| |
| static void eexp_hw_init586 (struct net_device *dev); |
| static void eexp_setup_filter (struct net_device *dev); |
| |
| static char *eexp_ifmap[]={"AUI", "BNC", "RJ45"}; |
| enum eexp_iftype {AUI=0, BNC=1, TPE=2}; |
| |
| #define STARTED_RU 2 |
| #define STARTED_CU 1 |
| |
| /* |
| * Primitive hardware access functions. |
| */ |
| |
| static inline unsigned short scb_status(struct net_device *dev) |
| { |
| return inw(dev->base_addr + 0xc008); |
| } |
| |
| static inline unsigned short scb_rdcmd(struct net_device *dev) |
| { |
| return inw(dev->base_addr + 0xc00a); |
| } |
| |
| static inline void scb_command(struct net_device *dev, unsigned short cmd) |
| { |
| outw(cmd, dev->base_addr + 0xc00a); |
| } |
| |
| static inline void scb_wrcbl(struct net_device *dev, unsigned short val) |
| { |
| outw(val, dev->base_addr + 0xc00c); |
| } |
| |
| static inline void scb_wrrfa(struct net_device *dev, unsigned short val) |
| { |
| outw(val, dev->base_addr + 0xc00e); |
| } |
| |
| static inline void set_loopback(struct net_device *dev) |
| { |
| outb(inb(dev->base_addr + Config) | 2, dev->base_addr + Config); |
| } |
| |
| static inline void clear_loopback(struct net_device *dev) |
| { |
| outb(inb(dev->base_addr + Config) & ~2, dev->base_addr + Config); |
| } |
| |
| static inline unsigned short int SHADOW(short int addr) |
| { |
| addr &= 0x1f; |
| if (addr > 0xf) addr += 0x3ff0; |
| return addr + 0x4000; |
| } |
| |
| /* |
| * Linux interface |
| */ |
| |
| /* |
| * checks for presence of EtherExpress card |
| */ |
| |
| static int __init do_express_probe(struct net_device *dev) |
| { |
| unsigned short *port; |
| static unsigned short ports[] = { 0x240,0x300,0x310,0x270,0x320,0x340,0 }; |
| unsigned short ioaddr = dev->base_addr; |
| int dev_irq = dev->irq; |
| int err; |
| |
| dev->if_port = 0xff; /* not set */ |
| |
| #ifdef CONFIG_MCA_LEGACY |
| if (MCA_bus) { |
| int slot = 0; |
| |
| /* |
| * Only find one card at a time. Subsequent calls |
| * will find others, however, proper multicard MCA |
| * probing and setup can't be done with the |
| * old-style Space.c init routines. -- ASF |
| */ |
| while (slot != MCA_NOTFOUND) { |
| int pos0, pos1; |
| |
| slot = mca_find_unused_adapter(0x628B, slot); |
| if (slot == MCA_NOTFOUND) |
| break; |
| |
| pos0 = mca_read_stored_pos(slot, 2); |
| pos1 = mca_read_stored_pos(slot, 3); |
| ioaddr = mca_iomap[pos1&0xf]; |
| |
| dev->irq = mca_irqmap[(pos1>>4)&0x7]; |
| |
| /* |
| * XXX: Transciever selection is done |
| * differently on the MCA version. |
| * How to get it to select something |
| * other than external/AUI is currently |
| * unknown. This code is just for looks. -- ASF |
| */ |
| if ((pos0 & 0x7) == 0x1) |
| dev->if_port = AUI; |
| else if ((pos0 & 0x7) == 0x5) { |
| if (pos1 & 0x80) |
| dev->if_port = BNC; |
| else |
| dev->if_port = TPE; |
| } |
| |
| mca_set_adapter_name(slot, "Intel EtherExpress 16 MCA"); |
| mca_set_adapter_procfn(slot, NULL, dev); |
| mca_mark_as_used(slot); |
| |
| break; |
| } |
| } |
| #endif |
| if (ioaddr&0xfe00) { |
| if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) |
| return -EBUSY; |
| err = eexp_hw_probe(dev,ioaddr); |
| release_region(ioaddr, EEXP_IO_EXTENT); |
| return err; |
| } else if (ioaddr) |
| return -ENXIO; |
| |
| for (port=&ports[0] ; *port ; port++ ) |
| { |
| unsigned short sum = 0; |
| int i; |
| if (!request_region(*port, EEXP_IO_EXTENT, "EtherExpress")) |
| continue; |
| for ( i=0 ; i<4 ; i++ ) |
| { |
| unsigned short t; |
| t = inb(*port + ID_PORT); |
| sum |= (t>>4) << ((t & 0x03)<<2); |
| } |
| if (sum==0xbaba && !eexp_hw_probe(dev,*port)) { |
| release_region(*port, EEXP_IO_EXTENT); |
| return 0; |
| } |
| release_region(*port, EEXP_IO_EXTENT); |
| dev->irq = dev_irq; |
| } |
| return -ENODEV; |
| } |
| |
| #ifndef MODULE |
| struct net_device * __init express_probe(int unit) |
| { |
| struct net_device *dev = alloc_etherdev(sizeof(struct net_local)); |
| int err; |
| |
| if (!dev) |
| return ERR_PTR(-ENOMEM); |
| |
| sprintf(dev->name, "eth%d", unit); |
| netdev_boot_setup_check(dev); |
| |
| err = do_express_probe(dev); |
| if (!err) |
| return dev; |
| free_netdev(dev); |
| return ERR_PTR(err); |
| } |
| #endif |
| |
| /* |
| * open and initialize the adapter, ready for use |
| */ |
| |
| static int eexp_open(struct net_device *dev) |
| { |
| int ret; |
| unsigned short ioaddr = dev->base_addr; |
| struct net_local *lp = netdev_priv(dev); |
| |
| #if NET_DEBUG > 6 |
| printk(KERN_DEBUG "%s: eexp_open()\n", dev->name); |
| #endif |
| |
| if (!dev->irq || !irqrmap[dev->irq]) |
| return -ENXIO; |
| |
| ret = request_irq(dev->irq, eexp_irq, 0, dev->name, dev); |
| if (ret) |
| return ret; |
| |
| if (!request_region(ioaddr, EEXP_IO_EXTENT, "EtherExpress")) { |
| printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| , ioaddr); |
| goto err_out1; |
| } |
| if (!request_region(ioaddr+0x4000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| , ioaddr+0x4000); |
| goto err_out2; |
| } |
| if (!request_region(ioaddr+0x8000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| , ioaddr+0x8000); |
| goto err_out3; |
| } |
| if (!request_region(ioaddr+0xc000, EEXP_IO_EXTENT, "EtherExpress shadow")) { |
| printk(KERN_WARNING "EtherExpress io port %x, is busy.\n" |
| , ioaddr+0xc000); |
| goto err_out4; |
| } |
| |
| if (lp->width) { |
| printk("%s: forcing ASIC to 8-bit mode\n", dev->name); |
| outb(inb(dev->base_addr+Config)&~4, dev->base_addr+Config); |
| } |
| |
| eexp_hw_init586(dev); |
| netif_start_queue(dev); |
| #if NET_DEBUG > 6 |
| printk(KERN_DEBUG "%s: leaving eexp_open()\n", dev->name); |
| #endif |
| return 0; |
| |
| err_out4: |
| release_region(ioaddr+0x8000, EEXP_IO_EXTENT); |
| err_out3: |
| release_region(ioaddr+0x4000, EEXP_IO_EXTENT); |
| err_out2: |
| release_region(ioaddr, EEXP_IO_EXTENT); |
| err_out1: |
| free_irq(dev->irq, dev); |
| return -EBUSY; |
| } |
| |
| /* |
| * close and disable the interface, leaving the 586 in reset. |
| */ |
| |
| static int eexp_close(struct net_device *dev) |
| { |
| unsigned short ioaddr = dev->base_addr; |
| struct net_local *lp = netdev_priv(dev); |
| |
| int irq = dev->irq; |
| |
| netif_stop_queue(dev); |
| |
| outb(SIRQ_dis|irqrmap[irq],ioaddr+SET_IRQ); |
| lp->started = 0; |
| scb_command(dev, SCB_CUsuspend|SCB_RUsuspend); |
| outb(0,ioaddr+SIGNAL_CA); |
| free_irq(irq,dev); |
| outb(i586_RST,ioaddr+EEPROM_Ctrl); |
| release_region(ioaddr, EEXP_IO_EXTENT); |
| release_region(ioaddr+0x4000, 16); |
| release_region(ioaddr+0x8000, 16); |
| release_region(ioaddr+0xc000, 16); |
| |
| return 0; |
| } |
| |
| /* |
| * This gets called when a higher level thinks we are broken. Check that |
| * nothing has become jammed in the CU. |
| */ |
| |
| static void unstick_cu(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short ioaddr = dev->base_addr; |
| |
| if (lp->started) |
| { |
| if (time_after(jiffies, dev->trans_start + 50)) |
| { |
| if (lp->tx_link==lp->last_tx_restart) |
| { |
| unsigned short boguscount=200,rsst; |
| printk(KERN_WARNING "%s: Retransmit timed out, status %04x, resetting...\n", |
| dev->name, scb_status(dev)); |
| eexp_hw_txinit(dev); |
| lp->last_tx_restart = 0; |
| scb_wrcbl(dev, lp->tx_link); |
| scb_command(dev, SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| while (!SCB_complete(rsst=scb_status(dev))) |
| { |
| if (!--boguscount) |
| { |
| boguscount=200; |
| printk(KERN_WARNING "%s: Reset timed out status %04x, retrying...\n", |
| dev->name,rsst); |
| scb_wrcbl(dev, lp->tx_link); |
| scb_command(dev, SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| } |
| } |
| netif_wake_queue(dev); |
| } |
| else |
| { |
| unsigned short status = scb_status(dev); |
| if (SCB_CUdead(status)) |
| { |
| unsigned short txstatus = eexp_hw_lasttxstat(dev); |
| printk(KERN_WARNING "%s: Transmit timed out, CU not active status %04x %04x, restarting...\n", |
| dev->name, status, txstatus); |
| eexp_hw_txrestart(dev); |
| } |
| else |
| { |
| unsigned short txstatus = eexp_hw_lasttxstat(dev); |
| if (netif_queue_stopped(dev) && !txstatus) |
| { |
| printk(KERN_WARNING "%s: CU wedged, status %04x %04x, resetting...\n", |
| dev->name,status,txstatus); |
| eexp_hw_init586(dev); |
| netif_wake_queue(dev); |
| } |
| else |
| { |
| printk(KERN_WARNING "%s: transmit timed out\n", dev->name); |
| } |
| } |
| } |
| } |
| } |
| else |
| { |
| if (time_after(jiffies, lp->init_time + 10)) |
| { |
| unsigned short status = scb_status(dev); |
| printk(KERN_WARNING "%s: i82586 startup timed out, status %04x, resetting...\n", |
| dev->name, status); |
| eexp_hw_init586(dev); |
| netif_wake_queue(dev); |
| } |
| } |
| } |
| |
| static void eexp_timeout(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| #ifdef CONFIG_SMP |
| unsigned long flags; |
| #endif |
| int status; |
| |
| disable_irq(dev->irq); |
| |
| /* |
| * Best would be to use synchronize_irq(); spin_lock() here |
| * lets make it work first.. |
| */ |
| |
| #ifdef CONFIG_SMP |
| spin_lock_irqsave(&lp->lock, flags); |
| #endif |
| |
| status = scb_status(dev); |
| unstick_cu(dev); |
| printk(KERN_INFO "%s: transmit timed out, %s?\n", dev->name, |
| (SCB_complete(status)?"lost interrupt": |
| "board on fire")); |
| dev->stats.tx_errors++; |
| lp->last_tx = jiffies; |
| if (!SCB_complete(status)) { |
| scb_command(dev, SCB_CUabort); |
| outb(0,dev->base_addr+SIGNAL_CA); |
| } |
| netif_wake_queue(dev); |
| #ifdef CONFIG_SMP |
| spin_unlock_irqrestore(&lp->lock, flags); |
| #endif |
| } |
| |
| /* |
| * Called to transmit a packet, or to allow us to right ourselves |
| * if the kernel thinks we've died. |
| */ |
| static netdev_tx_t eexp_xmit(struct sk_buff *buf, struct net_device *dev) |
| { |
| short length = buf->len; |
| #ifdef CONFIG_SMP |
| struct net_local *lp = netdev_priv(dev); |
| unsigned long flags; |
| #endif |
| |
| #if NET_DEBUG > 6 |
| printk(KERN_DEBUG "%s: eexp_xmit()\n", dev->name); |
| #endif |
| |
| if (buf->len < ETH_ZLEN) { |
| if (skb_padto(buf, ETH_ZLEN)) |
| return NETDEV_TX_OK; |
| length = ETH_ZLEN; |
| } |
| |
| disable_irq(dev->irq); |
| |
| /* |
| * Best would be to use synchronize_irq(); spin_lock() here |
| * lets make it work first.. |
| */ |
| |
| #ifdef CONFIG_SMP |
| spin_lock_irqsave(&lp->lock, flags); |
| #endif |
| |
| { |
| unsigned short *data = (unsigned short *)buf->data; |
| |
| dev->stats.tx_bytes += length; |
| |
| eexp_hw_tx_pio(dev,data,length); |
| } |
| dev_kfree_skb(buf); |
| #ifdef CONFIG_SMP |
| spin_unlock_irqrestore(&lp->lock, flags); |
| #endif |
| enable_irq(dev->irq); |
| return NETDEV_TX_OK; |
| } |
| |
| /* |
| * Handle an EtherExpress interrupt |
| * If we've finished initializing, start the RU and CU up. |
| * If we've already started, reap tx buffers, handle any received packets, |
| * check to make sure we've not become wedged. |
| */ |
| |
| static unsigned short eexp_start_irq(struct net_device *dev, |
| unsigned short status) |
| { |
| unsigned short ack_cmd = SCB_ack(status); |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short ioaddr = dev->base_addr; |
| if ((dev->flags & IFF_UP) && !(lp->started & STARTED_CU)) { |
| short diag_status, tdr_status; |
| while (SCB_CUstat(status)==2) |
| status = scb_status(dev); |
| #if NET_DEBUG > 4 |
| printk("%s: CU went non-active (status %04x)\n", |
| dev->name, status); |
| #endif |
| |
| outw(CONF_DIAG_RESULT & ~31, ioaddr + SM_PTR); |
| diag_status = inw(ioaddr + SHADOW(CONF_DIAG_RESULT)); |
| if (diag_status & 1<<11) { |
| printk(KERN_WARNING "%s: 82586 failed self-test\n", |
| dev->name); |
| } else if (!(diag_status & 1<<13)) { |
| printk(KERN_WARNING "%s: 82586 self-test failed to complete\n", dev->name); |
| } |
| |
| outw(CONF_TDR_RESULT & ~31, ioaddr + SM_PTR); |
| tdr_status = inw(ioaddr + SHADOW(CONF_TDR_RESULT)); |
| if (tdr_status & (TDR_SHORT|TDR_OPEN)) { |
| printk(KERN_WARNING "%s: TDR reports cable %s at %d tick%s\n", dev->name, (tdr_status & TDR_SHORT)?"short":"broken", tdr_status & TDR_TIME, ((tdr_status & TDR_TIME) != 1) ? "s" : ""); |
| } |
| else if (tdr_status & TDR_XCVRPROBLEM) { |
| printk(KERN_WARNING "%s: TDR reports transceiver problem\n", dev->name); |
| } |
| else if (tdr_status & TDR_LINKOK) { |
| #if NET_DEBUG > 4 |
| printk(KERN_DEBUG "%s: TDR reports link OK\n", dev->name); |
| #endif |
| } else { |
| printk("%s: TDR is ga-ga (status %04x)\n", dev->name, |
| tdr_status); |
| } |
| |
| lp->started |= STARTED_CU; |
| scb_wrcbl(dev, lp->tx_link); |
| /* if the RU isn't running, start it now */ |
| if (!(lp->started & STARTED_RU)) { |
| ack_cmd |= SCB_RUstart; |
| scb_wrrfa(dev, lp->rx_buf_start); |
| lp->rx_ptr = lp->rx_buf_start; |
| lp->started |= STARTED_RU; |
| } |
| ack_cmd |= SCB_CUstart | 0x2000; |
| } |
| |
| if ((dev->flags & IFF_UP) && !(lp->started & STARTED_RU) && SCB_RUstat(status)==4) |
| lp->started|=STARTED_RU; |
| |
| return ack_cmd; |
| } |
| |
| static void eexp_cmd_clear(struct net_device *dev) |
| { |
| unsigned long int oldtime = jiffies; |
| while (scb_rdcmd(dev) && (time_before(jiffies, oldtime + 10))); |
| if (scb_rdcmd(dev)) { |
| printk("%s: command didn't clear\n", dev->name); |
| } |
| } |
| |
| static irqreturn_t eexp_irq(int dummy, void *dev_info) |
| { |
| struct net_device *dev = dev_info; |
| struct net_local *lp; |
| unsigned short ioaddr,status,ack_cmd; |
| unsigned short old_read_ptr, old_write_ptr; |
| |
| lp = netdev_priv(dev); |
| ioaddr = dev->base_addr; |
| |
| spin_lock(&lp->lock); |
| |
| old_read_ptr = inw(ioaddr+READ_PTR); |
| old_write_ptr = inw(ioaddr+WRITE_PTR); |
| |
| outb(SIRQ_dis|irqrmap[dev->irq], ioaddr+SET_IRQ); |
| |
| status = scb_status(dev); |
| |
| #if NET_DEBUG > 4 |
| printk(KERN_DEBUG "%s: interrupt (status %x)\n", dev->name, status); |
| #endif |
| |
| if (lp->started == (STARTED_CU | STARTED_RU)) { |
| |
| do { |
| eexp_cmd_clear(dev); |
| |
| ack_cmd = SCB_ack(status); |
| scb_command(dev, ack_cmd); |
| outb(0,ioaddr+SIGNAL_CA); |
| |
| eexp_cmd_clear(dev); |
| |
| if (SCB_complete(status)) { |
| if (!eexp_hw_lasttxstat(dev)) { |
| printk("%s: tx interrupt but no status\n", dev->name); |
| } |
| } |
| |
| if (SCB_rxdframe(status)) |
| eexp_hw_rx_pio(dev); |
| |
| status = scb_status(dev); |
| } while (status & 0xc000); |
| |
| if (SCB_RUdead(status)) |
| { |
| printk(KERN_WARNING "%s: RU stopped: status %04x\n", |
| dev->name,status); |
| #if 0 |
| printk(KERN_WARNING "%s: cur_rfd=%04x, cur_rbd=%04x\n", dev->name, lp->cur_rfd, lp->cur_rbd); |
| outw(lp->cur_rfd, ioaddr+READ_PTR); |
| printk(KERN_WARNING "%s: [%04x]\n", dev->name, inw(ioaddr+DATAPORT)); |
| outw(lp->cur_rfd+6, ioaddr+READ_PTR); |
| printk(KERN_WARNING "%s: rbd is %04x\n", dev->name, rbd= inw(ioaddr+DATAPORT)); |
| outw(rbd, ioaddr+READ_PTR); |
| printk(KERN_WARNING "%s: [%04x %04x] ", dev->name, inw(ioaddr+DATAPORT), inw(ioaddr+DATAPORT)); |
| outw(rbd+8, ioaddr+READ_PTR); |
| printk("[%04x]\n", inw(ioaddr+DATAPORT)); |
| #endif |
| dev->stats.rx_errors++; |
| #if 1 |
| eexp_hw_rxinit(dev); |
| #else |
| lp->cur_rfd = lp->first_rfd; |
| #endif |
| scb_wrrfa(dev, lp->rx_buf_start); |
| scb_command(dev, SCB_RUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| } |
| } else { |
| if (status & 0x8000) |
| ack_cmd = eexp_start_irq(dev, status); |
| else |
| ack_cmd = SCB_ack(status); |
| scb_command(dev, ack_cmd); |
| outb(0,ioaddr+SIGNAL_CA); |
| } |
| |
| eexp_cmd_clear(dev); |
| |
| outb(SIRQ_en|irqrmap[dev->irq], ioaddr+SET_IRQ); |
| |
| #if NET_DEBUG > 6 |
| printk("%s: leaving eexp_irq()\n", dev->name); |
| #endif |
| outw(old_read_ptr, ioaddr+READ_PTR); |
| outw(old_write_ptr, ioaddr+WRITE_PTR); |
| |
| spin_unlock(&lp->lock); |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * Hardware access functions |
| */ |
| |
| /* |
| * Set the cable type to use. |
| */ |
| |
| static void eexp_hw_set_interface(struct net_device *dev) |
| { |
| unsigned char oldval = inb(dev->base_addr + 0x300e); |
| oldval &= ~0x82; |
| switch (dev->if_port) { |
| case TPE: |
| oldval |= 0x2; |
| case BNC: |
| oldval |= 0x80; |
| break; |
| } |
| outb(oldval, dev->base_addr+0x300e); |
| mdelay(20); |
| } |
| |
| /* |
| * Check all the receive buffers, and hand any received packets |
| * to the upper levels. Basic sanity check on each frame |
| * descriptor, though we don't bother trying to fix broken ones. |
| */ |
| |
| static void eexp_hw_rx_pio(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short rx_block = lp->rx_ptr; |
| unsigned short boguscount = lp->num_rx_bufs; |
| unsigned short ioaddr = dev->base_addr; |
| unsigned short status; |
| |
| #if NET_DEBUG > 6 |
| printk(KERN_DEBUG "%s: eexp_hw_rx()\n", dev->name); |
| #endif |
| |
| do { |
| unsigned short rfd_cmd, rx_next, pbuf, pkt_len; |
| |
| outw(rx_block, ioaddr + READ_PTR); |
| status = inw(ioaddr + DATAPORT); |
| |
| if (FD_Done(status)) |
| { |
| rfd_cmd = inw(ioaddr + DATAPORT); |
| rx_next = inw(ioaddr + DATAPORT); |
| pbuf = inw(ioaddr + DATAPORT); |
| |
| outw(pbuf, ioaddr + READ_PTR); |
| pkt_len = inw(ioaddr + DATAPORT); |
| |
| if (rfd_cmd!=0x0000) |
| { |
| printk(KERN_WARNING "%s: rfd_cmd not zero:0x%04x\n", |
| dev->name, rfd_cmd); |
| continue; |
| } |
| else if (pbuf!=rx_block+0x16) |
| { |
| printk(KERN_WARNING "%s: rfd and rbd out of sync 0x%04x 0x%04x\n", |
| dev->name, rx_block+0x16, pbuf); |
| continue; |
| } |
| else if ((pkt_len & 0xc000)!=0xc000) |
| { |
| printk(KERN_WARNING "%s: EOF or F not set on received buffer (%04x)\n", |
| dev->name, pkt_len & 0xc000); |
| continue; |
| } |
| else if (!FD_OK(status)) |
| { |
| dev->stats.rx_errors++; |
| if (FD_CRC(status)) |
| dev->stats.rx_crc_errors++; |
| if (FD_Align(status)) |
| dev->stats.rx_frame_errors++; |
| if (FD_Resrc(status)) |
| dev->stats.rx_fifo_errors++; |
| if (FD_DMA(status)) |
| dev->stats.rx_over_errors++; |
| if (FD_Short(status)) |
| dev->stats.rx_length_errors++; |
| } |
| else |
| { |
| struct sk_buff *skb; |
| pkt_len &= 0x3fff; |
| skb = dev_alloc_skb(pkt_len+16); |
| if (skb == NULL) |
| { |
| printk(KERN_WARNING "%s: Memory squeeze, dropping packet\n",dev->name); |
| dev->stats.rx_dropped++; |
| break; |
| } |
| skb_reserve(skb, 2); |
| outw(pbuf+10, ioaddr+READ_PTR); |
| insw(ioaddr+DATAPORT, skb_put(skb,pkt_len),(pkt_len+1)>>1); |
| skb->protocol = eth_type_trans(skb,dev); |
| netif_rx(skb); |
| dev->stats.rx_packets++; |
| dev->stats.rx_bytes += pkt_len; |
| } |
| outw(rx_block, ioaddr+WRITE_PTR); |
| outw(0, ioaddr+DATAPORT); |
| outw(0, ioaddr+DATAPORT); |
| rx_block = rx_next; |
| } |
| } while (FD_Done(status) && boguscount--); |
| lp->rx_ptr = rx_block; |
| } |
| |
| /* |
| * Hand a packet to the card for transmission |
| * If we get here, we MUST have already checked |
| * to make sure there is room in the transmit |
| * buffer region. |
| */ |
| |
| static void eexp_hw_tx_pio(struct net_device *dev, unsigned short *buf, |
| unsigned short len) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short ioaddr = dev->base_addr; |
| |
| if (LOCKUP16 || lp->width) { |
| /* Stop the CU so that there is no chance that it |
| jumps off to a bogus address while we are writing the |
| pointer to the next transmit packet in 8-bit mode -- |
| this eliminates the "CU wedged" errors in 8-bit mode. |
| (Zoltan Szilagyi 10-12-96) */ |
| scb_command(dev, SCB_CUsuspend); |
| outw(0xFFFF, ioaddr+SIGNAL_CA); |
| } |
| |
| outw(lp->tx_head, ioaddr + WRITE_PTR); |
| |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); |
| outw(lp->tx_head+0x08, ioaddr + DATAPORT); |
| outw(lp->tx_head+0x0e, ioaddr + DATAPORT); |
| |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(lp->tx_head+0x08, ioaddr + DATAPORT); |
| |
| outw(0x8000|len, ioaddr + DATAPORT); |
| outw(-1, ioaddr + DATAPORT); |
| outw(lp->tx_head+0x16, ioaddr + DATAPORT); |
| outw(0, ioaddr + DATAPORT); |
| |
| outsw(ioaddr + DATAPORT, buf, (len+1)>>1); |
| |
| outw(lp->tx_tail+0xc, ioaddr + WRITE_PTR); |
| outw(lp->tx_head, ioaddr + DATAPORT); |
| |
| dev->trans_start = jiffies; |
| lp->tx_tail = lp->tx_head; |
| if (lp->tx_head==TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) |
| lp->tx_head = TX_BUF_START; |
| else |
| lp->tx_head += TX_BUF_SIZE; |
| if (lp->tx_head != lp->tx_reap) |
| netif_wake_queue(dev); |
| |
| if (LOCKUP16 || lp->width) { |
| /* Restart the CU so that the packet can actually |
| be transmitted. (Zoltan Szilagyi 10-12-96) */ |
| scb_command(dev, SCB_CUresume); |
| outw(0xFFFF, ioaddr+SIGNAL_CA); |
| } |
| |
| dev->stats.tx_packets++; |
| lp->last_tx = jiffies; |
| } |
| |
| static const struct net_device_ops eexp_netdev_ops = { |
| .ndo_open = eexp_open, |
| .ndo_stop = eexp_close, |
| .ndo_start_xmit = eexp_xmit, |
| .ndo_set_multicast_list = eexp_set_multicast, |
| .ndo_tx_timeout = eexp_timeout, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| /* |
| * Sanity check the suspected EtherExpress card |
| * Read hardware address, reset card, size memory and initialize buffer |
| * memory pointers. These are held in netdev_priv(), in case someone has more |
| * than one card in a machine. |
| */ |
| |
| static int __init eexp_hw_probe(struct net_device *dev, unsigned short ioaddr) |
| { |
| unsigned short hw_addr[3]; |
| unsigned char buswidth; |
| unsigned int memory_size; |
| int i; |
| unsigned short xsum = 0; |
| struct net_local *lp = netdev_priv(dev); |
| |
| printk("%s: EtherExpress 16 at %#x ",dev->name,ioaddr); |
| |
| outb(ASIC_RST, ioaddr+EEPROM_Ctrl); |
| outb(0, ioaddr+EEPROM_Ctrl); |
| udelay(500); |
| outb(i586_RST, ioaddr+EEPROM_Ctrl); |
| |
| hw_addr[0] = eexp_hw_readeeprom(ioaddr,2); |
| hw_addr[1] = eexp_hw_readeeprom(ioaddr,3); |
| hw_addr[2] = eexp_hw_readeeprom(ioaddr,4); |
| |
| /* Standard Address or Compaq LTE Address */ |
| if (!((hw_addr[2]==0x00aa && ((hw_addr[1] & 0xff00)==0x0000)) || |
| (hw_addr[2]==0x0080 && ((hw_addr[1] & 0xff00)==0x5F00)))) |
| { |
| printk(" rejected: invalid address %04x%04x%04x\n", |
| hw_addr[2],hw_addr[1],hw_addr[0]); |
| return -ENODEV; |
| } |
| |
| /* Calculate the EEPROM checksum. Carry on anyway if it's bad, |
| * though. |
| */ |
| for (i = 0; i < 64; i++) |
| xsum += eexp_hw_readeeprom(ioaddr, i); |
| if (xsum != 0xbaba) |
| printk(" (bad EEPROM xsum 0x%02x)", xsum); |
| |
| dev->base_addr = ioaddr; |
| for ( i=0 ; i<6 ; i++ ) |
| dev->dev_addr[i] = ((unsigned char *)hw_addr)[5-i]; |
| |
| { |
| static char irqmap[]={0, 9, 3, 4, 5, 10, 11, 0}; |
| unsigned short setupval = eexp_hw_readeeprom(ioaddr,0); |
| |
| /* Use the IRQ from EEPROM if none was given */ |
| if (!dev->irq) |
| dev->irq = irqmap[setupval>>13]; |
| |
| if (dev->if_port == 0xff) { |
| dev->if_port = !(setupval & 0x1000) ? AUI : |
| eexp_hw_readeeprom(ioaddr,5) & 0x1 ? TPE : BNC; |
| } |
| |
| buswidth = !((setupval & 0x400) >> 10); |
| } |
| |
| memset(lp, 0, sizeof(struct net_local)); |
| spin_lock_init(&lp->lock); |
| |
| printk("(IRQ %d, %s connector, %d-bit bus", dev->irq, |
| eexp_ifmap[dev->if_port], buswidth?8:16); |
| |
| if (!request_region(dev->base_addr + 0x300e, 1, "EtherExpress")) |
| return -EBUSY; |
| |
| eexp_hw_set_interface(dev); |
| |
| release_region(dev->base_addr + 0x300e, 1); |
| |
| /* Find out how much RAM we have on the card */ |
| outw(0, dev->base_addr + WRITE_PTR); |
| for (i = 0; i < 32768; i++) |
| outw(0, dev->base_addr + DATAPORT); |
| |
| for (memory_size = 0; memory_size < 64; memory_size++) |
| { |
| outw(memory_size<<10, dev->base_addr + READ_PTR); |
| if (inw(dev->base_addr+DATAPORT)) |
| break; |
| outw(memory_size<<10, dev->base_addr + WRITE_PTR); |
| outw(memory_size | 0x5000, dev->base_addr+DATAPORT); |
| outw(memory_size<<10, dev->base_addr + READ_PTR); |
| if (inw(dev->base_addr+DATAPORT) != (memory_size | 0x5000)) |
| break; |
| } |
| |
| /* Sort out the number of buffers. We may have 16, 32, 48 or 64k |
| * of RAM to play with. |
| */ |
| lp->num_tx_bufs = 4; |
| lp->rx_buf_end = 0x3ff6; |
| switch (memory_size) |
| { |
| case 64: |
| lp->rx_buf_end += 0x4000; |
| case 48: |
| lp->num_tx_bufs += 4; |
| lp->rx_buf_end += 0x4000; |
| case 32: |
| lp->rx_buf_end += 0x4000; |
| case 16: |
| printk(", %dk RAM)\n", memory_size); |
| break; |
| default: |
| printk(") bad memory size (%dk).\n", memory_size); |
| return -ENODEV; |
| break; |
| } |
| |
| lp->rx_buf_start = TX_BUF_START + (lp->num_tx_bufs*TX_BUF_SIZE); |
| lp->width = buswidth; |
| |
| dev->netdev_ops = &eexp_netdev_ops; |
| dev->watchdog_timeo = 2*HZ; |
| |
| return register_netdev(dev); |
| } |
| |
| /* |
| * Read a word from the EtherExpress on-board serial EEPROM. |
| * The EEPROM contains 64 words of 16 bits. |
| */ |
| static unsigned short __init eexp_hw_readeeprom(unsigned short ioaddr, |
| unsigned char location) |
| { |
| unsigned short cmd = 0x180|(location&0x7f); |
| unsigned short rval = 0,wval = EC_CS|i586_RST; |
| int i; |
| |
| outb(EC_CS|i586_RST,ioaddr+EEPROM_Ctrl); |
| for (i=0x100 ; i ; i>>=1 ) |
| { |
| if (cmd&i) |
| wval |= EC_Wr; |
| else |
| wval &= ~EC_Wr; |
| |
| outb(wval,ioaddr+EEPROM_Ctrl); |
| outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| outb(wval,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| } |
| wval &= ~EC_Wr; |
| outb(wval,ioaddr+EEPROM_Ctrl); |
| for (i=0x8000 ; i ; i>>=1 ) |
| { |
| outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| if (inb(ioaddr+EEPROM_Ctrl)&EC_Rd) |
| rval |= i; |
| outb(wval,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| } |
| wval &= ~EC_CS; |
| outb(wval|EC_Clk,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| outb(wval,ioaddr+EEPROM_Ctrl); |
| eeprom_delay(); |
| return rval; |
| } |
| |
| /* |
| * Reap tx buffers and return last transmit status. |
| * if ==0 then either: |
| * a) we're not transmitting anything, so why are we here? |
| * b) we've died. |
| * otherwise, Stat_Busy(return) means we've still got some packets |
| * to transmit, Stat_Done(return) means our buffers should be empty |
| * again |
| */ |
| |
| static unsigned short eexp_hw_lasttxstat(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short tx_block = lp->tx_reap; |
| unsigned short status; |
| |
| if (!netif_queue_stopped(dev) && lp->tx_head==lp->tx_reap) |
| return 0x0000; |
| |
| do |
| { |
| outw(tx_block & ~31, dev->base_addr + SM_PTR); |
| status = inw(dev->base_addr + SHADOW(tx_block)); |
| if (!Stat_Done(status)) |
| { |
| lp->tx_link = tx_block; |
| return status; |
| } |
| else |
| { |
| lp->last_tx_restart = 0; |
| dev->stats.collisions += Stat_NoColl(status); |
| if (!Stat_OK(status)) |
| { |
| char *whatsup = NULL; |
| dev->stats.tx_errors++; |
| if (Stat_Abort(status)) |
| dev->stats.tx_aborted_errors++; |
| if (Stat_TNoCar(status)) { |
| whatsup = "aborted, no carrier"; |
| dev->stats.tx_carrier_errors++; |
| } |
| if (Stat_TNoCTS(status)) { |
| whatsup = "aborted, lost CTS"; |
| dev->stats.tx_carrier_errors++; |
| } |
| if (Stat_TNoDMA(status)) { |
| whatsup = "FIFO underran"; |
| dev->stats.tx_fifo_errors++; |
| } |
| if (Stat_TXColl(status)) { |
| whatsup = "aborted, too many collisions"; |
| dev->stats.tx_aborted_errors++; |
| } |
| if (whatsup) |
| printk(KERN_INFO "%s: transmit %s\n", |
| dev->name, whatsup); |
| } |
| else |
| dev->stats.tx_packets++; |
| } |
| if (tx_block == TX_BUF_START+((lp->num_tx_bufs-1)*TX_BUF_SIZE)) |
| lp->tx_reap = tx_block = TX_BUF_START; |
| else |
| lp->tx_reap = tx_block += TX_BUF_SIZE; |
| netif_wake_queue(dev); |
| } |
| while (lp->tx_reap != lp->tx_head); |
| |
| lp->tx_link = lp->tx_tail + 0x08; |
| |
| return status; |
| } |
| |
| /* |
| * This should never happen. It is called when some higher routine detects |
| * that the CU has stopped, to try to restart it from the last packet we knew |
| * we were working on, or the idle loop if we had finished for the time. |
| */ |
| |
| static void eexp_hw_txrestart(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short ioaddr = dev->base_addr; |
| |
| lp->last_tx_restart = lp->tx_link; |
| scb_wrcbl(dev, lp->tx_link); |
| scb_command(dev, SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| |
| { |
| unsigned short boguscount=50,failcount=5; |
| while (!scb_status(dev)) |
| { |
| if (!--boguscount) |
| { |
| if (--failcount) |
| { |
| printk(KERN_WARNING "%s: CU start timed out, status %04x, cmd %04x\n", dev->name, scb_status(dev), scb_rdcmd(dev)); |
| scb_wrcbl(dev, lp->tx_link); |
| scb_command(dev, SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| boguscount = 100; |
| } |
| else |
| { |
| printk(KERN_WARNING "%s: Failed to restart CU, resetting board...\n",dev->name); |
| eexp_hw_init586(dev); |
| netif_wake_queue(dev); |
| return; |
| } |
| } |
| } |
| } |
| } |
| |
| /* |
| * Writes down the list of transmit buffers into card memory. Each |
| * entry consists of an 82586 transmit command, followed by a jump |
| * pointing to itself. When we want to transmit a packet, we write |
| * the data into the appropriate transmit buffer and then modify the |
| * preceding jump to point at the new transmit command. This means that |
| * the 586 command unit is continuously active. |
| */ |
| |
| static void eexp_hw_txinit(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short tx_block = TX_BUF_START; |
| unsigned short curtbuf; |
| unsigned short ioaddr = dev->base_addr; |
| |
| for ( curtbuf=0 ; curtbuf<lp->num_tx_bufs ; curtbuf++ ) |
| { |
| outw(tx_block, ioaddr + WRITE_PTR); |
| |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(Cmd_INT|Cmd_Xmit, ioaddr + DATAPORT); |
| outw(tx_block+0x08, ioaddr + DATAPORT); |
| outw(tx_block+0x0e, ioaddr + DATAPORT); |
| |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(0x0000, ioaddr + DATAPORT); |
| outw(tx_block+0x08, ioaddr + DATAPORT); |
| |
| outw(0x8000, ioaddr + DATAPORT); |
| outw(-1, ioaddr + DATAPORT); |
| outw(tx_block+0x16, ioaddr + DATAPORT); |
| outw(0x0000, ioaddr + DATAPORT); |
| |
| tx_block += TX_BUF_SIZE; |
| } |
| lp->tx_head = TX_BUF_START; |
| lp->tx_reap = TX_BUF_START; |
| lp->tx_tail = tx_block - TX_BUF_SIZE; |
| lp->tx_link = lp->tx_tail + 0x08; |
| lp->rx_buf_start = tx_block; |
| |
| } |
| |
| /* |
| * Write the circular list of receive buffer descriptors to card memory. |
| * The end of the list isn't marked, which means that the 82586 receive |
| * unit will loop until buffers become available (this avoids it giving us |
| * "out of resources" messages). |
| */ |
| |
| static void eexp_hw_rxinit(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short rx_block = lp->rx_buf_start; |
| unsigned short ioaddr = dev->base_addr; |
| |
| lp->num_rx_bufs = 0; |
| lp->rx_first = lp->rx_ptr = rx_block; |
| do |
| { |
| lp->num_rx_bufs++; |
| |
| outw(rx_block, ioaddr + WRITE_PTR); |
| |
| outw(0, ioaddr + DATAPORT); outw(0, ioaddr+DATAPORT); |
| outw(rx_block + RX_BUF_SIZE, ioaddr+DATAPORT); |
| outw(0xffff, ioaddr+DATAPORT); |
| |
| outw(0x0000, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| outw(0xdead, ioaddr+DATAPORT); |
| |
| outw(0x0000, ioaddr+DATAPORT); |
| outw(rx_block + RX_BUF_SIZE + 0x16, ioaddr+DATAPORT); |
| outw(rx_block + 0x20, ioaddr+DATAPORT); |
| outw(0, ioaddr+DATAPORT); |
| outw(RX_BUF_SIZE-0x20, ioaddr+DATAPORT); |
| |
| lp->rx_last = rx_block; |
| rx_block += RX_BUF_SIZE; |
| } while (rx_block <= lp->rx_buf_end-RX_BUF_SIZE); |
| |
| |
| /* Make first Rx frame descriptor point to first Rx buffer |
| descriptor */ |
| outw(lp->rx_first + 6, ioaddr+WRITE_PTR); |
| outw(lp->rx_first + 0x16, ioaddr+DATAPORT); |
| |
| /* Close Rx frame descriptor ring */ |
| outw(lp->rx_last + 4, ioaddr+WRITE_PTR); |
| outw(lp->rx_first, ioaddr+DATAPORT); |
| |
| /* Close Rx buffer descriptor ring */ |
| outw(lp->rx_last + 0x16 + 2, ioaddr+WRITE_PTR); |
| outw(lp->rx_first + 0x16, ioaddr+DATAPORT); |
| |
| } |
| |
| /* |
| * Un-reset the 586, and start the configuration sequence. We don't wait for |
| * this to finish, but allow the interrupt handler to start the CU and RU for |
| * us. We can't start the receive/transmission system up before we know that |
| * the hardware is configured correctly. |
| */ |
| |
| static void eexp_hw_init586(struct net_device *dev) |
| { |
| struct net_local *lp = netdev_priv(dev); |
| unsigned short ioaddr = dev->base_addr; |
| int i; |
| |
| #if NET_DEBUG > 6 |
| printk("%s: eexp_hw_init586()\n", dev->name); |
| #endif |
| |
| lp->started = 0; |
| |
| set_loopback(dev); |
| |
| outb(SIRQ_dis|irqrmap[dev->irq],ioaddr+SET_IRQ); |
| |
| /* Download the startup code */ |
| outw(lp->rx_buf_end & ~31, ioaddr + SM_PTR); |
| outw(lp->width?0x0001:0x0000, ioaddr + 0x8006); |
| outw(0x0000, ioaddr + 0x8008); |
| outw(0x0000, ioaddr + 0x800a); |
| outw(0x0000, ioaddr + 0x800c); |
| outw(0x0000, ioaddr + 0x800e); |
| |
| for (i = 0; i < ARRAY_SIZE(start_code) * 2; i+=32) { |
| int j; |
| outw(i, ioaddr + SM_PTR); |
| for (j = 0; j < 16 && (i+j)/2 < ARRAY_SIZE(start_code); j+=2) |
| outw(start_code[(i+j)/2], |
| ioaddr+0x4000+j); |
| for (j = 0; j < 16 && (i+j+16)/2 < ARRAY_SIZE(start_code); j+=2) |
| outw(start_code[(i+j+16)/2], |
| ioaddr+0x8000+j); |
| } |
| |
| /* Do we want promiscuous mode or multicast? */ |
| outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); |
| i = inw(ioaddr+SHADOW(CONF_PROMISC)); |
| outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
| ioaddr+SHADOW(CONF_PROMISC)); |
| lp->was_promisc = dev->flags & IFF_PROMISC; |
| #if 0 |
| eexp_setup_filter(dev); |
| #endif |
| |
| /* Write our hardware address */ |
| outw(CONF_HWADDR & ~31, ioaddr+SM_PTR); |
| outw(((unsigned short *)dev->dev_addr)[0], ioaddr+SHADOW(CONF_HWADDR)); |
| outw(((unsigned short *)dev->dev_addr)[1], |
| ioaddr+SHADOW(CONF_HWADDR+2)); |
| outw(((unsigned short *)dev->dev_addr)[2], |
| ioaddr+SHADOW(CONF_HWADDR+4)); |
| |
| eexp_hw_txinit(dev); |
| eexp_hw_rxinit(dev); |
| |
| outb(0,ioaddr+EEPROM_Ctrl); |
| mdelay(5); |
| |
| scb_command(dev, 0xf000); |
| outb(0,ioaddr+SIGNAL_CA); |
| |
| outw(0, ioaddr+SM_PTR); |
| |
| { |
| unsigned short rboguscount=50,rfailcount=5; |
| while (inw(ioaddr+0x4000)) |
| { |
| if (!--rboguscount) |
| { |
| printk(KERN_WARNING "%s: i82586 reset timed out, kicking...\n", |
| dev->name); |
| scb_command(dev, 0); |
| outb(0,ioaddr+SIGNAL_CA); |
| rboguscount = 100; |
| if (!--rfailcount) |
| { |
| printk(KERN_WARNING "%s: i82586 not responding, giving up.\n", |
| dev->name); |
| return; |
| } |
| } |
| } |
| } |
| |
| scb_wrcbl(dev, CONF_LINK); |
| scb_command(dev, 0xf000|SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| |
| { |
| unsigned short iboguscount=50,ifailcount=5; |
| while (!scb_status(dev)) |
| { |
| if (!--iboguscount) |
| { |
| if (--ifailcount) |
| { |
| printk(KERN_WARNING "%s: i82586 initialization timed out, status %04x, cmd %04x\n", |
| dev->name, scb_status(dev), scb_rdcmd(dev)); |
| scb_wrcbl(dev, CONF_LINK); |
| scb_command(dev, 0xf000|SCB_CUstart); |
| outb(0,ioaddr+SIGNAL_CA); |
| iboguscount = 100; |
| } |
| else |
| { |
| printk(KERN_WARNING "%s: Failed to initialize i82586, giving up.\n",dev->name); |
| return; |
| } |
| } |
| } |
| } |
| |
| clear_loopback(dev); |
| outb(SIRQ_en|irqrmap[dev->irq],ioaddr+SET_IRQ); |
| |
| lp->init_time = jiffies; |
| #if NET_DEBUG > 6 |
| printk("%s: leaving eexp_hw_init586()\n", dev->name); |
| #endif |
| return; |
| } |
| |
| static void eexp_setup_filter(struct net_device *dev) |
| { |
| struct netdev_hw_addr *ha; |
| unsigned short ioaddr = dev->base_addr; |
| int count = netdev_mc_count(dev); |
| int i; |
| if (count > 8) { |
| printk(KERN_INFO "%s: too many multicast addresses (%d)\n", |
| dev->name, count); |
| count = 8; |
| } |
| |
| outw(CONF_NR_MULTICAST & ~31, ioaddr+SM_PTR); |
| outw(6*count, ioaddr+SHADOW(CONF_NR_MULTICAST)); |
| i = 0; |
| netdev_for_each_mc_addr(ha, dev) { |
| unsigned short *data = (unsigned short *) ha->addr; |
| |
| if (i == count) |
| break; |
| outw((CONF_MULTICAST+(6*i)) & ~31, ioaddr+SM_PTR); |
| outw(data[0], ioaddr+SHADOW(CONF_MULTICAST+(6*i))); |
| outw((CONF_MULTICAST+(6*i)+2) & ~31, ioaddr+SM_PTR); |
| outw(data[1], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+2)); |
| outw((CONF_MULTICAST+(6*i)+4) & ~31, ioaddr+SM_PTR); |
| outw(data[2], ioaddr+SHADOW(CONF_MULTICAST+(6*i)+4)); |
| i++; |
| } |
| } |
| |
| /* |
| * Set or clear the multicast filter for this adaptor. |
| */ |
| static void |
| eexp_set_multicast(struct net_device *dev) |
| { |
| unsigned short ioaddr = dev->base_addr; |
| struct net_local *lp = netdev_priv(dev); |
| int kick = 0, i; |
| if ((dev->flags & IFF_PROMISC) != lp->was_promisc) { |
| outw(CONF_PROMISC & ~31, ioaddr+SM_PTR); |
| i = inw(ioaddr+SHADOW(CONF_PROMISC)); |
| outw((dev->flags & IFF_PROMISC)?(i|1):(i & ~1), |
| ioaddr+SHADOW(CONF_PROMISC)); |
| lp->was_promisc = dev->flags & IFF_PROMISC; |
| kick = 1; |
| } |
| if (!(dev->flags & IFF_PROMISC)) { |
| eexp_setup_filter(dev); |
| if (lp->old_mc_count != netdev_mc_count(dev)) { |
| kick = 1; |
| lp->old_mc_count = netdev_mc_count(dev); |
| } |
| } |
| if (kick) { |
| unsigned long oj; |
| scb_command(dev, SCB_CUsuspend); |
| outb(0, ioaddr+SIGNAL_CA); |
| outb(0, ioaddr+SIGNAL_CA); |
| #if 0 |
| printk("%s: waiting for CU to go suspended\n", dev->name); |
| #endif |
| oj = jiffies; |
| while ((SCB_CUstat(scb_status(dev)) == 2) && |
| (time_before(jiffies, oj + 2000))); |
| if (SCB_CUstat(scb_status(dev)) == 2) |
| printk("%s: warning, CU didn't stop\n", dev->name); |
| lp->started &= ~(STARTED_CU); |
| scb_wrcbl(dev, CONF_LINK); |
| scb_command(dev, SCB_CUstart); |
| outb(0, ioaddr+SIGNAL_CA); |
| } |
| } |
| |
| |
| /* |
| * MODULE stuff |
| */ |
| |
| #ifdef MODULE |
| |
| #define EEXP_MAX_CARDS 4 /* max number of cards to support */ |
| |
| static struct net_device *dev_eexp[EEXP_MAX_CARDS]; |
| static int irq[EEXP_MAX_CARDS]; |
| static int io[EEXP_MAX_CARDS]; |
| |
| module_param_array(io, int, NULL, 0); |
| module_param_array(irq, int, NULL, 0); |
| MODULE_PARM_DESC(io, "EtherExpress 16 I/O base address(es)"); |
| MODULE_PARM_DESC(irq, "EtherExpress 16 IRQ number(s)"); |
| MODULE_LICENSE("GPL"); |
| |
| |
| /* Ideally the user would give us io=, irq= for every card. If any parameters |
| * are specified, we verify and then use them. If no parameters are given, we |
| * autoprobe for one card only. |
| */ |
| int __init init_module(void) |
| { |
| struct net_device *dev; |
| int this_dev, found = 0; |
| |
| for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { |
| dev = alloc_etherdev(sizeof(struct net_local)); |
| dev->irq = irq[this_dev]; |
| dev->base_addr = io[this_dev]; |
| if (io[this_dev] == 0) { |
| if (this_dev) |
| break; |
| printk(KERN_NOTICE "eexpress.c: Module autoprobe not recommended, give io=xx.\n"); |
| } |
| if (do_express_probe(dev) == 0) { |
| dev_eexp[this_dev] = dev; |
| found++; |
| continue; |
| } |
| printk(KERN_WARNING "eexpress.c: Failed to register card at 0x%x.\n", io[this_dev]); |
| free_netdev(dev); |
| break; |
| } |
| if (found) |
| return 0; |
| return -ENXIO; |
| } |
| |
| void __exit cleanup_module(void) |
| { |
| int this_dev; |
| |
| for (this_dev = 0; this_dev < EEXP_MAX_CARDS; this_dev++) { |
| struct net_device *dev = dev_eexp[this_dev]; |
| if (dev) { |
| unregister_netdev(dev); |
| free_netdev(dev); |
| } |
| } |
| } |
| #endif |
| |
| /* |
| * Local Variables: |
| * c-file-style: "linux" |
| * tab-width: 8 |
| * End: |
| */ |