diff options
Diffstat (limited to 'drivers/net/sun3_82586.c')
| -rw-r--r-- | drivers/net/sun3_82586.c | 1213 |
1 files changed, 0 insertions, 1213 deletions
diff --git a/drivers/net/sun3_82586.c b/drivers/net/sun3_82586.c deleted file mode 100644 index b6ae53bada7..00000000000 --- a/drivers/net/sun3_82586.c +++ /dev/null @@ -1,1213 +0,0 @@ -/* - * Sun3 i82586 Ethernet driver - * - * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net) - * - * Original copyright follows: - * -------------------------- - * - * net-3-driver for the NI5210 card (i82586 Ethernet chip) - * - * This is an extension to the Linux operating system, and is covered by the - * same Gnu Public License that covers that work. - * - * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later) - * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de) - * -------------------------- - * - * Consult ni52.c for further notes from the original driver. - * - * This incarnation currently supports the OBIO version of the i82586 chip - * used in certain sun3 models. It should be fairly doable to expand this - * to support VME if I should every acquire such a board. - * - */ - -static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */ -static int automatic_resume = 0; /* experimental .. better should be zero */ -static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */ -static int fifo=0x8; /* don't change */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/bitops.h> -#include <asm/io.h> -#include <asm/idprom.h> -#include <asm/machines.h> -#include <asm/sun3mmu.h> -#include <asm/dvma.h> -#include <asm/byteorder.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> - -#include "sun3_82586.h" - -#define DRV_NAME "sun3_82586" - -#define DEBUG /* debug on */ -#define SYSBUSVAL 0 /* 16 Bit */ -#define SUN3_82586_TOTAL_SIZE PAGE_SIZE - -#define sun3_attn586() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;} -#define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;} -#define sun3_disint() {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;} -#define sun3_enaint() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;} -#define sun3_active() {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);} - -#define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) ) -#define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base)) -#define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop ))) - -/******************* how to calculate the buffers ***************************** - - * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works - * --------------- in a different (more stable?) mode. Only in this mode it's - * possible to configure the driver with 'NO_NOPCOMMANDS' - -sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8; -sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT -sizeof(rfd) = 24; sizeof(rbd) = 12; -sizeof(tbd) = 8; sizeof(transmit_cmd) = 16; -sizeof(nop_cmd) = 8; - - * if you don't know the driver, better do not change these values: */ - -#define RECV_BUFF_SIZE 1536 /* slightly oversized */ -#define XMIT_BUFF_SIZE 1536 /* slightly oversized */ -#define NUM_XMIT_BUFFS 1 /* config for 32K shmem */ -#define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */ -#define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */ -#define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */ -#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */ - -/**************************************************************************/ - -/* different DELAYs */ -#define DELAY(x) mdelay(32 * x); -#define DELAY_16(); { udelay(16); } -#define DELAY_18(); { udelay(4); } - -/* wait for command with timeout: */ -#define WAIT_4_SCB_CMD() \ -{ int i; \ - for(i=0;i<16384;i++) { \ - if(!p->scb->cmd_cuc) break; \ - DELAY_18(); \ - if(i == 16383) { \ - printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \ - if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } } - -#define WAIT_4_SCB_CMD_RUC() { int i; \ - for(i=0;i<16384;i++) { \ - if(!p->scb->cmd_ruc) break; \ - DELAY_18(); \ - if(i == 16383) { \ - printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \ - if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } } - -#define WAIT_4_STAT_COMPL(addr) { int i; \ - for(i=0;i<32767;i++) { \ - if(swab16((addr)->cmd_status) & STAT_COMPL) break; \ - DELAY_16(); DELAY_16(); } } - -static int sun3_82586_probe1(struct net_device *dev,int ioaddr); -static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id); -static int sun3_82586_open(struct net_device *dev); -static int sun3_82586_close(struct net_device *dev); -static int sun3_82586_send_packet(struct sk_buff *,struct net_device *); -static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev); -static void set_multicast_list(struct net_device *dev); -static void sun3_82586_timeout(struct net_device *dev); -#if 0 -static void sun3_82586_dump(struct net_device *,void *); -#endif - -/* helper-functions */ -static int init586(struct net_device *dev); -static int check586(struct net_device *dev,char *where,unsigned size); -static void alloc586(struct net_device *dev); -static void startrecv586(struct net_device *dev); -static void *alloc_rfa(struct net_device *dev,void *ptr); -static void sun3_82586_rcv_int(struct net_device *dev); -static void sun3_82586_xmt_int(struct net_device *dev); -static void sun3_82586_rnr_int(struct net_device *dev); - -struct priv -{ - unsigned long base; - char *memtop; - long int lock; - int reseted; - volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first; - volatile struct scp_struct *scp; /* volatile is important */ - volatile struct iscp_struct *iscp; /* volatile is important */ - volatile struct scb_struct *scb; /* volatile is important */ - volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS]; - volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS]; -#if (NUM_XMIT_BUFFS == 1) - volatile struct nop_cmd_struct *nop_cmds[2]; -#else - volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS]; -#endif - volatile int nop_point,num_recv_buffs; - volatile char *xmit_cbuffs[NUM_XMIT_BUFFS]; - volatile int xmit_count,xmit_last; -}; - -/********************************************** - * close device - */ -static int sun3_82586_close(struct net_device *dev) -{ - free_irq(dev->irq, dev); - - sun3_reset586(); /* the hard way to stop the receiver */ - - netif_stop_queue(dev); - - return 0; -} - -/********************************************** - * open device - */ -static int sun3_82586_open(struct net_device *dev) -{ - int ret; - - sun3_disint(); - alloc586(dev); - init586(dev); - startrecv586(dev); - sun3_enaint(); - - ret = request_irq(dev->irq, sun3_82586_interrupt,0,dev->name,dev); - if (ret) - { - sun3_reset586(); - return ret; - } - - netif_start_queue(dev); - - return 0; /* most done by init */ -} - -/********************************************** - * Check to see if there's an 82586 out there. - */ -static int check586(struct net_device *dev,char *where,unsigned size) -{ - struct priv pb; - struct priv *p = &pb; - char *iscp_addr; - int i; - - p->base = (unsigned long) dvma_btov(0); - p->memtop = (char *)dvma_btov((unsigned long)where); - p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS); - memset((char *)p->scp,0, sizeof(struct scp_struct)); - for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */ - if(((char *)p->scp)[i]) - return 0; - p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */ - if(p->scp->sysbus != SYSBUSVAL) - return 0; - - iscp_addr = (char *)dvma_btov((unsigned long)where); - - p->iscp = (struct iscp_struct *) iscp_addr; - memset((char *)p->iscp,0, sizeof(struct iscp_struct)); - - p->scp->iscp = make24(p->iscp); - p->iscp->busy = 1; - - sun3_reset586(); - sun3_attn586(); - DELAY(1); /* wait a while... */ - - if(p->iscp->busy) /* i82586 clears 'busy' after successful init */ - return 0; - - return 1; -} - -/****************************************************************** - * set iscp at the right place, called by sun3_82586_probe1 and open586. - */ -static void alloc586(struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); - - sun3_reset586(); - DELAY(1); - - p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS); - p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start); - p->scb = (struct scb_struct *) ((char *)p->iscp + sizeof(struct iscp_struct)); - - memset((char *) p->iscp,0,sizeof(struct iscp_struct)); - memset((char *) p->scp ,0,sizeof(struct scp_struct)); - - p->scp->iscp = make24(p->iscp); - p->scp->sysbus = SYSBUSVAL; - p->iscp->scb_offset = make16(p->scb); - p->iscp->scb_base = make24(dvma_btov(dev->mem_start)); - - p->iscp->busy = 1; - sun3_reset586(); - sun3_attn586(); - - DELAY(1); - - if(p->iscp->busy) - printk("%s: Init-Problems (alloc).\n",dev->name); - - p->reseted = 0; - - memset((char *)p->scb,0,sizeof(struct scb_struct)); -} - -struct net_device * __init sun3_82586_probe(int unit) -{ - struct net_device *dev; - unsigned long ioaddr; - static int found = 0; - int err = -ENOMEM; - - /* check that this machine has an onboard 82586 */ - switch(idprom->id_machtype) { - case SM_SUN3|SM_3_160: - case SM_SUN3|SM_3_260: - /* these machines have 82586 */ - break; - - default: - return ERR_PTR(-ENODEV); - } - - if (found) - return ERR_PTR(-ENODEV); - - ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE); - if (!ioaddr) - return ERR_PTR(-ENOMEM); - found = 1; - - dev = alloc_etherdev(sizeof(struct priv)); - if (!dev) - goto out; - if (unit >= 0) { - sprintf(dev->name, "eth%d", unit); - netdev_boot_setup_check(dev); - } - - dev->irq = IE_IRQ; - dev->base_addr = ioaddr; - err = sun3_82586_probe1(dev, ioaddr); - if (err) - goto out1; - err = register_netdev(dev); - if (err) - goto out2; - return dev; - -out2: - release_region(ioaddr, SUN3_82586_TOTAL_SIZE); -out1: - free_netdev(dev); -out: - iounmap((void __iomem *)ioaddr); - return ERR_PTR(err); -} - -static const struct net_device_ops sun3_82586_netdev_ops = { - .ndo_open = sun3_82586_open, - .ndo_stop = sun3_82586_close, - .ndo_start_xmit = sun3_82586_send_packet, - .ndo_set_multicast_list = set_multicast_list, - .ndo_tx_timeout = sun3_82586_timeout, - .ndo_get_stats = sun3_82586_get_stats, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_change_mtu = eth_change_mtu, -}; - -static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr) -{ - int i, size, retval; - - if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME)) - return -EBUSY; - - /* copy in the ethernet address from the prom */ - for(i = 0; i < 6 ; i++) - dev->dev_addr[i] = idprom->id_ethaddr[i]; - - printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr); - - /* - * check (or search) IO-Memory, 32K - */ - size = 0x8000; - - dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000); - dev->mem_end = dev->mem_start + size; - - if(size != 0x2000 && size != 0x4000 && size != 0x8000) { - printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size); - retval = -ENODEV; - goto out; - } - if(!check586(dev,(char *) dev->mem_start,size)) { - printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size); - retval = -ENODEV; - goto out; - } - - ((struct priv *)netdev_priv(dev))->memtop = - (char *)dvma_btov(dev->mem_start); - ((struct priv *)netdev_priv(dev))->base = (unsigned long) dvma_btov(0); - alloc586(dev); - - /* set number of receive-buffs according to memsize */ - if(size == 0x2000) - ((struct priv *)netdev_priv(dev))->num_recv_buffs = - NUM_RECV_BUFFS_8; - else if(size == 0x4000) - ((struct priv *)netdev_priv(dev))->num_recv_buffs = - NUM_RECV_BUFFS_16; - else - ((struct priv *)netdev_priv(dev))->num_recv_buffs = - NUM_RECV_BUFFS_32; - - printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq); - - dev->netdev_ops = &sun3_82586_netdev_ops; - dev->watchdog_timeo = HZ/20; - - dev->if_port = 0; - return 0; -out: - release_region(ioaddr, SUN3_82586_TOTAL_SIZE); - return retval; -} - - -static int init586(struct net_device *dev) -{ - void *ptr; - int i,result=0; - struct priv *p = netdev_priv(dev); - volatile struct configure_cmd_struct *cfg_cmd; - volatile struct iasetup_cmd_struct *ias_cmd; - volatile struct tdr_cmd_struct *tdr_cmd; - volatile struct mcsetup_cmd_struct *mc_cmd; - struct netdev_hw_addr *ha; - int num_addrs=netdev_mc_count(dev); - - ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct)); - - cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */ - cfg_cmd->cmd_status = 0; - cfg_cmd->cmd_cmd = swab16(CMD_CONFIGURE | CMD_LAST); - cfg_cmd->cmd_link = 0xffff; - - cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */ - cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */ - cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */ - cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */ - cfg_cmd->priority = 0x00; - cfg_cmd->ifs = 0x60; - cfg_cmd->time_low = 0x00; - cfg_cmd->time_high = 0xf2; - cfg_cmd->promisc = 0; - if(dev->flags & IFF_ALLMULTI) { - int len = ((char *) p->iscp - (char *) ptr - 8) / 6; - if(num_addrs > len) { - printk("%s: switching to promisc. mode\n",dev->name); - cfg_cmd->promisc = 1; - } - } - if(dev->flags&IFF_PROMISC) - cfg_cmd->promisc = 1; - cfg_cmd->carr_coll = 0x00; - - p->scb->cbl_offset = make16(cfg_cmd); - p->scb->cmd_ruc = 0; - - p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ - sun3_attn586(); - - WAIT_4_STAT_COMPL(cfg_cmd); - - if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK)) - { - printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status)); - return 1; - } - - /* - * individual address setup - */ - - ias_cmd = (struct iasetup_cmd_struct *)ptr; - - ias_cmd->cmd_status = 0; - ias_cmd->cmd_cmd = swab16(CMD_IASETUP | CMD_LAST); - ias_cmd->cmd_link = 0xffff; - - memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN); - - p->scb->cbl_offset = make16(ias_cmd); - - p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ - sun3_attn586(); - - WAIT_4_STAT_COMPL(ias_cmd); - - if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) { - printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status)); - return 1; - } - - /* - * TDR, wire check .. e.g. no resistor e.t.c - */ - - tdr_cmd = (struct tdr_cmd_struct *)ptr; - - tdr_cmd->cmd_status = 0; - tdr_cmd->cmd_cmd = swab16(CMD_TDR | CMD_LAST); - tdr_cmd->cmd_link = 0xffff; - tdr_cmd->status = 0; - - p->scb->cbl_offset = make16(tdr_cmd); - p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */ - sun3_attn586(); - - WAIT_4_STAT_COMPL(tdr_cmd); - - if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL)) - { - printk("%s: Problems while running the TDR.\n",dev->name); - } - else - { - DELAY_16(); /* wait for result */ - result = swab16(tdr_cmd->status); - - p->scb->cmd_cuc = p->scb->cus & STAT_MASK; - sun3_attn586(); /* ack the interrupts */ - - if(result & TDR_LNK_OK) - ; - else if(result & TDR_XCVR_PRB) - printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name); - else if(result & TDR_ET_OPN) - printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK); - else if(result & TDR_ET_SRT) - { - if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */ - printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK); - } - else - printk("%s: TDR: Unknown status %04x\n",dev->name,result); - } - - /* - * Multicast setup - */ - if(num_addrs && !(dev->flags & IFF_PROMISC) ) - { - mc_cmd = (struct mcsetup_cmd_struct *) ptr; - mc_cmd->cmd_status = 0; - mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST); - mc_cmd->cmd_link = 0xffff; - mc_cmd->mc_cnt = swab16(num_addrs * 6); - - i = 0; - netdev_for_each_mc_addr(ha, dev) - memcpy((char *) mc_cmd->mc_list[i++], - ha->addr, ETH_ALEN); - - p->scb->cbl_offset = make16(mc_cmd); - p->scb->cmd_cuc = CUC_START; - sun3_attn586(); - - WAIT_4_STAT_COMPL(mc_cmd); - - if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) - printk("%s: Can't apply multicast-address-list.\n",dev->name); - } - - /* - * alloc nop/xmit-cmds - */ -#if (NUM_XMIT_BUFFS == 1) - for(i=0;i<2;i++) - { - p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; - p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP); - p->nop_cmds[i]->cmd_status = 0; - p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); - ptr = (char *) ptr + sizeof(struct nop_cmd_struct); - } -#else - for(i=0;i<NUM_XMIT_BUFFS;i++) - { - p->nop_cmds[i] = (struct nop_cmd_struct *)ptr; - p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP); - p->nop_cmds[i]->cmd_status = 0; - p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i])); - ptr = (char *) ptr + sizeof(struct nop_cmd_struct); - } -#endif - - ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */ - - /* - * alloc xmit-buffs / init xmit_cmds - */ - for(i=0;i<NUM_XMIT_BUFFS;i++) - { - p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/ - ptr = (char *) ptr + sizeof(struct transmit_cmd_struct); - p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */ - ptr = (char *) ptr + XMIT_BUFF_SIZE; - p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */ - ptr = (char *) ptr + sizeof(struct tbd_struct); - if((void *)ptr > (void *)dev->mem_end) - { - printk("%s: not enough shared-mem for your configuration!\n",dev->name); - return 1; - } - memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct)); - memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct)); - p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]); - p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL); - p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT); - p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i])); - p->xmit_buffs[i]->next = 0xffff; - p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i])); - } - - p->xmit_count = 0; - p->xmit_last = 0; -#ifndef NO_NOPCOMMANDS - p->nop_point = 0; -#endif - - /* - * 'start transmitter' - */ -#ifndef NO_NOPCOMMANDS - p->scb->cbl_offset = make16(p->nop_cmds[0]); - p->scb->cmd_cuc = CUC_START; - sun3_attn586(); - WAIT_4_SCB_CMD(); -#else - p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]); - p->xmit_cmds[0]->cmd_cmd = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT); -#endif - - /* - * ack. interrupts - */ - p->scb->cmd_cuc = p->scb->cus & STAT_MASK; - sun3_attn586(); - DELAY_16(); - - sun3_enaint(); - sun3_active(); - - return 0; -} - -/****************************************************** - * This is a helper routine for sun3_82586_rnr_int() and init586(). - * It sets up the Receive Frame Area (RFA). - */ - -static void *alloc_rfa(struct net_device *dev,void *ptr) -{ - volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr; - volatile struct rbd_struct *rbd; - int i; - struct priv *p = netdev_priv(dev); - - memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd)); - p->rfd_first = rfd; - - for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) { - rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) ); - rfd[i].rbd_offset = 0xffff; - } - rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */ - - ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) ); - - rbd = (struct rbd_struct *) ptr; - ptr = (void *) (rbd + p->num_recv_buffs); - - /* clr descriptors */ - memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs)); - - for(i=0;i<p->num_recv_buffs;i++) - { - rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs)); - rbd[i].size = swab16(RECV_BUFF_SIZE); - rbd[i].buffer = make24(ptr); - ptr = (char *) ptr + RECV_BUFF_SIZE; - } - - p->rfd_top = p->rfd_first; - p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd); - - p->scb->rfa_offset = make16(p->rfd_first); - p->rfd_first->rbd_offset = make16(rbd); - - return ptr; -} - - -/************************************************** - * Interrupt Handler ... - */ - -static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id) -{ - struct net_device *dev = dev_id; - unsigned short stat; - int cnt=0; - struct priv *p; - - if (!dev) { - printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq); - return IRQ_NONE; - } - p = netdev_priv(dev); - - if(debuglevel > 1) - printk("I"); - - WAIT_4_SCB_CMD(); /* wait for last command */ - - while((stat=p->scb->cus & STAT_MASK)) - { - p->scb->cmd_cuc = stat; - sun3_attn586(); - - if(stat & STAT_FR) /* received a frame */ - sun3_82586_rcv_int(dev); - - if(stat & STAT_RNR) /* RU went 'not ready' */ - { - printk("(R)"); - if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */ - { - WAIT_4_SCB_CMD(); - p->scb->cmd_ruc = RUC_RESUME; - sun3_attn586(); - WAIT_4_SCB_CMD_RUC(); - } - else - { - printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus); - sun3_82586_rnr_int(dev); - } - } - - if(stat & STAT_CX) /* command with I-bit set complete */ - sun3_82586_xmt_int(dev); - -#ifndef NO_NOPCOMMANDS - if(stat & STAT_CNA) /* CU went 'not ready' */ - { - if(netif_running(dev)) - printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus); - } -#endif - - if(debuglevel > 1) - printk("%d",cnt++); - - WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */ - if(p->scb->cmd_cuc) /* timed out? */ - { - printk("%s: Acknowledge timed out.\n",dev->name); - sun3_disint(); - break; - } - } - - if(debuglevel > 1) - printk("i"); - return IRQ_HANDLED; -} - -/******************************************************* - * receive-interrupt - */ - -static void sun3_82586_rcv_int(struct net_device *dev) -{ - int status,cnt=0; - unsigned short totlen; - struct sk_buff *skb; - struct rbd_struct *rbd; - struct priv *p = netdev_priv(dev); - - if(debuglevel > 0) - printk("R"); - - for(;(status = p->rfd_top->stat_high) & RFD_COMPL;) - { - rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset); - - if(status & RFD_OK) /* frame received without error? */ - { - if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */ - { - totlen &= RBD_MASK; /* length of this frame */ - rbd->status = 0; - skb = (struct sk_buff *) dev_alloc_skb(totlen+2); - if(skb != NULL) - { - skb_reserve(skb,2); - skb_put(skb,totlen); - skb_copy_to_linear_data(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen); - skb->protocol=eth_type_trans(skb,dev); - netif_rx(skb); - dev->stats.rx_packets++; - } - else - dev->stats.rx_dropped++; - } - else - { - int rstat; - /* free all RBD's until RBD_LAST is set */ - totlen = 0; - while(!((rstat=swab16(rbd->status)) & RBD_LAST)) - { - totlen += rstat & RBD_MASK; - if(!rstat) - { - printk("%s: Whoops .. no end mark in RBD list\n",dev->name); - break; - } - rbd->status = 0; - rbd = (struct rbd_struct *) make32(rbd->next); - } - totlen += rstat & RBD_MASK; - rbd->status = 0; - printk("%s: received oversized frame! length: %d\n",dev->name,totlen); - dev->stats.rx_dropped++; - } - } - else /* frame !(ok), only with 'save-bad-frames' */ - { - printk("%s: oops! rfd-error-status: %04x\n",dev->name,status); - dev->stats.rx_errors++; - } - p->rfd_top->stat_high = 0; - p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */ - p->rfd_top->rbd_offset = 0xffff; - p->rfd_last->last = 0; /* delete RFD_SUSP */ - p->rfd_last = p->rfd_top; - p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */ - p->scb->rfa_offset = make16(p->rfd_top); - - if(debuglevel > 0) - printk("%d",cnt++); - } - - if(automatic_resume) - { - WAIT_4_SCB_CMD(); - p->scb->cmd_ruc = RUC_RESUME; - sun3_attn586(); - WAIT_4_SCB_CMD_RUC(); - } - -#ifdef WAIT_4_BUSY - { - int i; - for(i=0;i<1024;i++) - { - if(p->rfd_top->status) - break; - DELAY_16(); - if(i == 1023) - printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name); - } - } -#endif - -#if 0 - if(!at_least_one) - { - int i; - volatile struct rfd_struct *rfds=p->rfd_top; - volatile struct rbd_struct *rbds; - printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least); - for(i=0;i< (p->num_recv_buffs+4);i++) - { - rbds = (struct rbd_struct *) make32(rfds->rbd_offset); - printk("%04x:%04x ",rfds->status,rbds->status); - rfds = (struct rfd_struct *) make32(rfds->next); - } - printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status); - printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus); - } - old_at_least = at_least_one; -#endif - - if(debuglevel > 0) - printk("r"); -} - -/********************************************************** - * handle 'Receiver went not ready'. - */ - -static void sun3_82586_rnr_int(struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); - - dev->stats.rx_errors++; - - WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */ - p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */ - sun3_attn586(); - WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */ - - alloc_rfa(dev,(char *)p->rfd_first); -/* maybe add a check here, before restarting the RU */ - startrecv586(dev); /* restart RU */ - - printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus); - -} - -/********************************************************** - * handle xmit - interrupt - */ - -static void sun3_82586_xmt_int(struct net_device *dev) -{ - int status; - struct priv *p = netdev_priv(dev); - - if(debuglevel > 0) - printk("X"); - - status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status); - if(!(status & STAT_COMPL)) - printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name); - - if(status & STAT_OK) - { - dev->stats.tx_packets++; - dev->stats.collisions += (status & TCMD_MAXCOLLMASK); - } - else - { - dev->stats.tx_errors++; - if(status & TCMD_LATECOLL) { - printk("%s: late collision detected.\n",dev->name); - dev->stats.collisions++; - } - else if(status & TCMD_NOCARRIER) { - dev->stats.tx_carrier_errors++; - printk("%s: no carrier detected.\n",dev->name); - } - else if(status & TCMD_LOSTCTS) - printk("%s: loss of CTS detected.\n",dev->name); - else if(status & TCMD_UNDERRUN) { - dev->stats.tx_fifo_errors++; - printk("%s: DMA underrun detected.\n",dev->name); - } - else if(status & TCMD_MAXCOLL) { - printk("%s: Max. collisions exceeded.\n",dev->name); - dev->stats.collisions += 16; - } - } - -#if (NUM_XMIT_BUFFS > 1) - if( (++p->xmit_last) == NUM_XMIT_BUFFS) - p->xmit_last = 0; -#endif - netif_wake_queue(dev); -} - -/*********************************************************** - * (re)start the receiver - */ - -static void startrecv586(struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); - - WAIT_4_SCB_CMD(); - WAIT_4_SCB_CMD_RUC(); - p->scb->rfa_offset = make16(p->rfd_first); - p->scb->cmd_ruc = RUC_START; - sun3_attn586(); /* start cmd. */ - WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */ -} - -static void sun3_82586_timeout(struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); -#ifndef NO_NOPCOMMANDS - if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */ - { - netif_wake_queue(dev); -#ifdef DEBUG - printk("%s: strange ... timeout with CU active?!?\n",dev->name); - printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)swab16(p->xmit_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[1]->cmd_status),(int)p->nop_point); -#endif - p->scb->cmd_cuc = CUC_ABORT; - sun3_attn586(); - WAIT_4_SCB_CMD(); - p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]); - p->scb->cmd_cuc = CUC_START; - sun3_attn586(); - WAIT_4_SCB_CMD(); - dev->trans_start = jiffies; /* prevent tx timeout */ - return 0; - } -#endif - { -#ifdef DEBUG - printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus); - printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status)); - printk("%s: check, whether you set the right interrupt number!\n",dev->name); -#endif - sun3_82586_close(dev); - sun3_82586_open(dev); - } - dev->trans_start = jiffies; /* prevent tx timeout */ -} - -/****************************************************** - * send frame - */ - -static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev) -{ - int len,i; -#ifndef NO_NOPCOMMANDS - int next_nop; -#endif - struct priv *p = netdev_priv(dev); - - if(skb->len > XMIT_BUFF_SIZE) - { - printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len); - return NETDEV_TX_OK; - } - - netif_stop_queue(dev); - -#if(NUM_XMIT_BUFFS > 1) - if(test_and_set_bit(0,(void *) &p->lock)) { - printk("%s: Queue was locked\n",dev->name); - return NETDEV_TX_BUSY; - } - else -#endif - { - len = skb->len; - if (len < ETH_ZLEN) { - memset((void *)p->xmit_cbuffs[p->xmit_count], 0, - ETH_ZLEN); - len = ETH_ZLEN; - } - skb_copy_from_linear_data(skb, (void *)p->xmit_cbuffs[p->xmit_count], skb->len); - -#if (NUM_XMIT_BUFFS == 1) -# ifdef NO_NOPCOMMANDS - -#ifdef DEBUG - if(p->scb->cus & CU_ACTIVE) - { - printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name); - printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status)); - } -#endif - - p->xmit_buffs[0]->size = swab16(TBD_LAST | len); - for(i=0;i<16;i++) - { - p->xmit_cmds[0]->cmd_status = 0; - WAIT_4_SCB_CMD(); - if( (p->scb->cus & CU_STATUS) == CU_SUSPEND) - p->scb->cmd_cuc = CUC_RESUME; - else - { - p->scb->cbl_offset = make16(p->xmit_cmds[0]); - p->scb->cmd_cuc = CUC_START; - } - - sun3_attn586(); - if(!i) - dev_kfree_skb(skb); - WAIT_4_SCB_CMD(); - if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */ - break; - if(p->xmit_cmds[0]->cmd_status) - break; - if(i==15) - printk("%s: Can't start transmit-command.\n",dev->name); - } -# else - next_nop = (p->nop_point + 1) & 0x1; - p->xmit_buffs[0]->size = swab16(TBD_LAST | len); - - p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link - = make16((p->nop_cmds[next_nop])); - p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0; - - p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0])); - p->nop_point = next_nop; - dev_kfree_skb(skb); -# endif -#else - p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len); - if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS ) - next_nop = 0; - - p->xmit_cmds[p->xmit_count]->cmd_status = 0; - /* linkpointer of xmit-command already points to next nop cmd */ - p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop])); - p->nop_cmds[next_nop]->cmd_status = 0; - - p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count])); - p->xmit_count = next_nop; - - { - unsigned long flags; - local_irq_save(flags); - if(p->xmit_count != p->xmit_last) - netif_wake_queue(dev); - p->lock = 0; - local_irq_restore(flags); - } - dev_kfree_skb(skb); -#endif - } - return NETDEV_TX_OK; -} - -/******************************************* - * Someone wanna have the statistics - */ - -static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev) -{ - struct priv *p = netdev_priv(dev); - unsigned short crc,aln,rsc,ovrn; - - crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */ - p->scb->crc_errs = 0; - aln = swab16(p->scb->aln_errs); - p->scb->aln_errs = 0; - rsc = swab16(p->scb->rsc_errs); - p->scb->rsc_errs = 0; - ovrn = swab16(p->scb->ovrn_errs); - p->scb->ovrn_errs = 0; - - dev->stats.rx_crc_errors += crc; - dev->stats.rx_fifo_errors += ovrn; - dev->stats.rx_frame_errors += aln; - dev->stats.rx_dropped += rsc; - - return &dev->stats; -} - -/******************************************************** - * Set MC list .. - */ - -static void set_multicast_list(struct net_device *dev) -{ - netif_stop_queue(dev); - sun3_disint(); - alloc586(dev); - init586(dev); - startrecv586(dev); - sun3_enaint(); - netif_wake_queue(dev); -} - -#ifdef MODULE -#error This code is not currently supported as a module -static struct net_device *dev_sun3_82586; - -int init_module(void) -{ - dev_sun3_82586 = sun3_82586_probe(-1); - if (IS_ERR(dev_sun3_82586)) - return PTR_ERR(dev_sun3_82586); - return 0; -} - -void cleanup_module(void) -{ - unsigned long ioaddr = dev_sun3_82586->base_addr; - unregister_netdev(dev_sun3_82586); - release_region(ioaddr, SUN3_82586_TOTAL_SIZE); - iounmap((void *)ioaddr); - free_netdev(dev_sun3_82586); -} -#endif /* MODULE */ - -#if 0 -/* - * DUMP .. we expect a not running CMD unit and enough space - */ -void sun3_82586_dump(struct net_device *dev,void *ptr) -{ - struct priv *p = netdev_priv(dev); - struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr; - int i; - - p->scb->cmd_cuc = CUC_ABORT; - sun3_attn586(); - WAIT_4_SCB_CMD(); - WAIT_4_SCB_CMD_RUC(); - - dump_cmd->cmd_status = 0; - dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST; - dump_cmd->dump_offset = make16((dump_cmd + 1)); - dump_cmd->cmd_link = 0xffff; - - p->scb->cbl_offset = make16(dump_cmd); - p->scb->cmd_cuc = CUC_START; - sun3_attn586(); - WAIT_4_STAT_COMPL(dump_cmd); - - if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) ) - printk("%s: Can't get dump information.\n",dev->name); - - for(i=0;i<170;i++) { - printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]); - if(i % 24 == 23) - printk("\n"); - } - printk("\n"); -} -#endif - -MODULE_LICENSE("GPL"); |