static int elp_close(struct net_device *dev) { elp_device *adapter; adapter = dev->priv; if (elp_debug >= 3) printk(KERN_DEBUG "%s: request to close device\n", dev->name); netif_stop_queue(dev); /* Someone may request the device statistic information even when * the interface is closed. The following will update the statistics * structure in the driver, so we'll be able to give current statistics. */ (void) elp_get_stats(dev); /* * disable interrupts on the board */ outb_control(0, dev); /* * release the IRQ */ free_irq(dev->irq, dev); free_dma(dev->dma); free_pages((unsigned long) adapter->dma_buffer, get_order(DMA_BUFFER_SIZE)); return 0; }
static int elp_close(struct net_device *dev) { elp_device *adapter = netdev_priv(dev); if (elp_debug >= 3) pr_debug("%s: request to close device\n", dev->name); netif_stop_queue(dev); /* */ (void) elp_get_stats(dev); /* */ outb_control(0, dev); /* */ free_irq(dev->irq, dev); free_dma(dev->dma); free_pages((unsigned long) adapter->dma_buffer, get_order(DMA_BUFFER_SIZE)); return 0; }
static void receive_packet(struct net_device *dev, int len) { int rlen; elp_device *adapter = dev->priv; void *target; struct sk_buff *skb; unsigned long flags; rlen = (len + 1) & ~1; skb = dev_alloc_skb(rlen + 2); if (!skb) { printk(KERN_WARNING "%s: memory squeeze, dropping packet\n", dev->name); target = adapter->dma_buffer; adapter->current_dma.target = NULL; /* FIXME: stats */ return; } skb_reserve(skb, 2); target = skb_put(skb, rlen); if ((unsigned long)(target + rlen) >= MAX_DMA_ADDRESS) { adapter->current_dma.target = target; target = adapter->dma_buffer; } else { adapter->current_dma.target = NULL; } /* if this happens, we die */ if (test_and_set_bit(0, (void *) &adapter->dmaing)) printk(KERN_ERR "%s: rx blocked, DMA in progress, dir %d\n", dev->name, adapter->current_dma.direction); skb->dev = dev; adapter->current_dma.direction = 0; adapter->current_dma.length = rlen; adapter->current_dma.skb = skb; adapter->current_dma.start_time = jiffies; outb_control(adapter->hcr_val | DIR | TCEN | DMAE, dev); flags=claim_dma_lock(); disable_dma(dev->dma); clear_dma_ff(dev->dma); set_dma_mode(dev->dma, 0x04); /* dma read */ set_dma_addr(dev->dma, isa_virt_to_bus(target)); set_dma_count(dev->dma, rlen); enable_dma(dev->dma); release_dma_lock(flags); if (elp_debug >= 3) { printk(KERN_DEBUG "%s: rx DMA transfer started\n", dev->name); } if (adapter->rx_active) adapter->rx_active--; if (!adapter->busy) printk(KERN_WARNING "%s: receive_packet called, busy not set.\n", dev->name); }
static netdev_tx_t send_packet(struct net_device *dev, struct sk_buff *skb) { elp_device *adapter = netdev_priv(dev); unsigned long target; unsigned long flags; unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1); if (test_and_set_bit(0, (void *) &adapter->busy)) { if (elp_debug >= 2) pr_debug("%s: transmit blocked\n", dev->name); return false; } dev->stats.tx_bytes += nlen; adapter->tx_pcb.command = CMD_TRANSMIT_PACKET; adapter->tx_pcb.length = sizeof(struct Xmit_pkt); adapter->tx_pcb.data.xmit_pkt.buf_ofs = adapter->tx_pcb.data.xmit_pkt.buf_seg = 0; adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen; if (!send_pcb(dev, &adapter->tx_pcb)) { adapter->busy = 0; return false; } if (test_and_set_bit(0, (void *) &adapter->dmaing)) pr_debug("%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction); adapter->current_dma.direction = 1; adapter->current_dma.start_time = jiffies; if ((unsigned long)(skb->data + nlen) >= MAX_DMA_ADDRESS || nlen != skb->len) { skb_copy_from_linear_data(skb, adapter->dma_buffer, nlen); memset(adapter->dma_buffer+skb->len, 0, nlen-skb->len); target = isa_virt_to_bus(adapter->dma_buffer); } else { target = isa_virt_to_bus(skb->data); } adapter->current_dma.skb = skb; flags=claim_dma_lock(); disable_dma(dev->dma); clear_dma_ff(dev->dma); set_dma_mode(dev->dma, 0x48); set_dma_addr(dev->dma, target); set_dma_count(dev->dma, nlen); outb_control(adapter->hcr_val | DMAE | TCEN, dev); enable_dma(dev->dma); release_dma_lock(flags); if (elp_debug >= 3) pr_debug("%s: DMA transfer started\n", dev->name); return true; }
static inline void set_hsf(struct net_device *dev, int hsf) { elp_device *adapter = dev->priv; unsigned long flags; spin_lock_irqsave(&adapter->lock, flags); outb_control((HCR_VAL(dev) & ~HSF_PCB_MASK) | hsf, dev); spin_unlock_irqrestore(&adapter->lock, flags); }
static inline void adapter_reset(struct net_device *dev) { unsigned long timeout; elp_device *adapter = dev->priv; unsigned char orig_hcr = adapter->hcr_val; outb_control(0, dev); if (inb_status(dev->base_addr) & ACRF) { do { inb_command(dev->base_addr); timeout = jiffies + 2*HZ/100; while (time_before_eq(jiffies, timeout) && !(inb_status(dev->base_addr) & ACRF)); } while (inb_status(dev->base_addr) & ACRF); set_hsf(dev, HSF_PCB_NAK); } outb_control(adapter->hcr_val | ATTN | DIR, dev); mdelay(10); outb_control(adapter->hcr_val & ~ATTN, dev); mdelay(10); outb_control(adapter->hcr_val | FLSH, dev); mdelay(10); outb_control(adapter->hcr_val & ~FLSH, dev); mdelay(10); outb_control(orig_hcr, dev); if (!start_receive(dev, &adapter->tx_pcb)) printk(KERN_ERR "%s: start receive command failed \n", dev->name); }
/* Check to make sure that a DMA transfer hasn't timed out. This should * never happen in theory, but seems to occur occasionally if the card gets * prodded at the wrong time. */ static inline void check_3c505_dma(struct net_device *dev) { elp_device *adapter = dev->priv; if (adapter->dmaing && time_after(jiffies, adapter->current_dma.start_time + 10)) { unsigned long flags, f; printk(KERN_ERR "%s: DMA %s timed out, %d bytes left\n", dev->name, adapter->current_dma.direction ? "download" : "upload", get_dma_residue(dev->dma)); spin_lock_irqsave(&adapter->lock, flags); adapter->dmaing = 0; adapter->busy = 0; f=claim_dma_lock(); disable_dma(dev->dma); release_dma_lock(f); if (adapter->rx_active) adapter->rx_active--; outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev); spin_unlock_irqrestore(&adapter->lock, flags); } }
static int send_packet(struct net_device *dev, struct sk_buff *skb) { elp_device *adapter = dev->priv; unsigned long target; unsigned long flags; /* * make sure the length is even and no shorter than 60 bytes */ unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1); if (test_and_set_bit(0, (void *) &adapter->busy)) { if (elp_debug >= 2) printk(KERN_DEBUG "%s: transmit blocked\n", dev->name); return FALSE; } adapter->stats.tx_bytes += nlen; /* * send the adapter a transmit packet command. Ignore segment and offset * and make sure the length is even */ adapter->tx_pcb.command = CMD_TRANSMIT_PACKET; adapter->tx_pcb.length = sizeof(struct Xmit_pkt); adapter->tx_pcb.data.xmit_pkt.buf_ofs = adapter->tx_pcb.data.xmit_pkt.buf_seg = 0; /* Unused */ adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen; if (!send_pcb(dev, &adapter->tx_pcb)) { adapter->busy = 0; return FALSE; } /* if this happens, we die */ if (test_and_set_bit(0, (void *) &adapter->dmaing)) printk(KERN_DEBUG "%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction); adapter->current_dma.direction = 1; adapter->current_dma.start_time = jiffies; if ((unsigned long)(skb->data + nlen) >= MAX_DMA_ADDRESS || nlen != skb->len) { skb_copy_from_linear_data(skb, adapter->dma_buffer, nlen); memset(adapter->dma_buffer+skb->len, 0, nlen-skb->len); target = isa_virt_to_bus(adapter->dma_buffer); } else { target = isa_virt_to_bus(skb->data); } adapter->current_dma.skb = skb; flags=claim_dma_lock(); disable_dma(dev->dma); clear_dma_ff(dev->dma); set_dma_mode(dev->dma, 0x48); /* dma memory -> io */ set_dma_addr(dev->dma, target); set_dma_count(dev->dma, nlen); outb_control(adapter->hcr_val | DMAE | TCEN, dev); enable_dma(dev->dma); release_dma_lock(flags); if (elp_debug >= 3) printk(KERN_DEBUG "%s: DMA transfer started\n", dev->name); return TRUE; }
static int elp_open(struct net_device *dev) { elp_device *adapter; int retval; adapter = dev->priv; if (elp_debug >= 3) printk(KERN_DEBUG "%s: request to open device\n", dev->name); /* * make sure we actually found the device */ if (adapter == NULL) { printk(KERN_ERR "%s: Opening a non-existent physical device\n", dev->name); return -EAGAIN; } /* * disable interrupts on the board */ outb_control(0, dev); /* * clear any pending interrupts */ inb_command(dev->base_addr); adapter_reset(dev); /* * no receive PCBs active */ adapter->rx_active = 0; adapter->busy = 0; adapter->send_pcb_semaphore = 0; adapter->rx_backlog.in = 0; adapter->rx_backlog.out = 0; spin_lock_init(&adapter->lock); /* * install our interrupt service routine */ if ((retval = request_irq(dev->irq, &elp_interrupt, 0, dev->name, dev))) { printk(KERN_ERR "%s: could not allocate IRQ%d\n", dev->name, dev->irq); return retval; } if ((retval = request_dma(dev->dma, dev->name))) { free_irq(dev->irq, dev); printk(KERN_ERR "%s: could not allocate DMA%d channel\n", dev->name, dev->dma); return retval; } adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE); if (!adapter->dma_buffer) { printk(KERN_ERR "%s: could not allocate DMA buffer\n", dev->name); free_dma(dev->dma); free_irq(dev->irq, dev); return -ENOMEM; } adapter->dmaing = 0; /* * enable interrupts on the board */ outb_control(CMDE, dev); /* * configure adapter memory: we need 10 multicast addresses, default==0 */ if (elp_debug >= 3) printk(KERN_DEBUG "%s: sending 3c505 memory configuration command\n", dev->name); adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; adapter->tx_pcb.data.memconf.cmd_q = 10; adapter->tx_pcb.data.memconf.rcv_q = 20; adapter->tx_pcb.data.memconf.mcast = 10; adapter->tx_pcb.data.memconf.frame = 20; adapter->tx_pcb.data.memconf.rcv_b = 20; adapter->tx_pcb.data.memconf.progs = 0; adapter->tx_pcb.length = sizeof(struct Memconf); adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 0; if (!send_pcb(dev, &adapter->tx_pcb)) printk(KERN_ERR "%s: couldn't send memory configuration command\n", dev->name); else { unsigned long timeout = jiffies + TIMEOUT; while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && time_before(jiffies, timeout)); if (time_after_eq(jiffies, timeout)) TIMEOUT_MSG(__LINE__); } /* * configure adapter to receive broadcast messages and wait for response */ if (elp_debug >= 3) printk(KERN_DEBUG "%s: sending 82586 configure command\n", dev->name); adapter->tx_pcb.command = CMD_CONFIGURE_82586; adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD; adapter->tx_pcb.length = 2; adapter->got[CMD_CONFIGURE_82586] = 0; if (!send_pcb(dev, &adapter->tx_pcb)) printk(KERN_ERR "%s: couldn't send 82586 configure command\n", dev->name); else { unsigned long timeout = jiffies + TIMEOUT; while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout)); if (time_after_eq(jiffies, timeout)) TIMEOUT_MSG(__LINE__); } /* enable burst-mode DMA */ /* outb(0x1, dev->base_addr + PORT_AUXDMA); */ /* * queue receive commands to provide buffering */ prime_rx(dev); if (elp_debug >= 3) printk(KERN_DEBUG "%s: %d receive PCBs active\n", dev->name, adapter->rx_active); /* * device is now officially open! */ netif_start_queue(dev); return 0; }
static irqreturn_t elp_interrupt(int irq, void *dev_id) { int len; int dlen; int icount = 0; struct net_device *dev; elp_device *adapter; unsigned long timeout; dev = dev_id; adapter = (elp_device *) dev->priv; spin_lock(&adapter->lock); do { /* * has a DMA transfer finished? */ if (inb_status(dev->base_addr) & DONE) { if (!adapter->dmaing) { printk(KERN_WARNING "%s: phantom DMA completed\n", dev->name); } if (elp_debug >= 3) { printk(KERN_DEBUG "%s: %s DMA complete, status %02x\n", dev->name, adapter->current_dma.direction ? "tx" : "rx", inb_status(dev->base_addr)); } outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev); if (adapter->current_dma.direction) { dev_kfree_skb_irq(adapter->current_dma.skb); } else { struct sk_buff *skb = adapter->current_dma.skb; if (skb) { if (adapter->current_dma.target) { /* have already done the skb_put() */ memcpy(adapter->current_dma.target, adapter->dma_buffer, adapter->current_dma.length); } skb->protocol = eth_type_trans(skb,dev); adapter->stats.rx_bytes += skb->len; netif_rx(skb); dev->last_rx = jiffies; } } adapter->dmaing = 0; if (adapter->rx_backlog.in != adapter->rx_backlog.out) { int t = adapter->rx_backlog.length[adapter->rx_backlog.out]; adapter->rx_backlog.out = backlog_next(adapter->rx_backlog.out); if (elp_debug >= 2) printk(KERN_DEBUG "%s: receiving backlogged packet (%d)\n", dev->name, t); receive_packet(dev, t); } else { adapter->busy = 0; } } else { /* has one timed out? */ check_3c505_dma(dev); } /* * receive a PCB from the adapter */ timeout = jiffies + 3*HZ/100; while ((inb_status(dev->base_addr) & ACRF) != 0 && time_before(jiffies, timeout)) { if (receive_pcb(dev, &adapter->irx_pcb)) { switch (adapter->irx_pcb.command) { case 0: break; /* * received a packet - this must be handled fast */ case 0xff: case CMD_RECEIVE_PACKET_COMPLETE: /* if the device isn't open, don't pass packets up the stack */ if (!netif_running(dev)) break; len = adapter->irx_pcb.data.rcv_resp.pkt_len; dlen = adapter->irx_pcb.data.rcv_resp.buf_len; if (adapter->irx_pcb.data.rcv_resp.timeout != 0) { printk(KERN_ERR "%s: interrupt - packet not received correctly\n", dev->name); } else { if (elp_debug >= 3) { printk(KERN_DEBUG "%s: interrupt - packet received of length %i (%i)\n", dev->name, len, dlen); } if (adapter->irx_pcb.command == 0xff) { if (elp_debug >= 2) printk(KERN_DEBUG "%s: adding packet to backlog (len = %d)\n", dev->name, dlen); adapter->rx_backlog.length[adapter->rx_backlog.in] = dlen; adapter->rx_backlog.in = backlog_next(adapter->rx_backlog.in); } else { receive_packet(dev, dlen); } if (elp_debug >= 3) printk(KERN_DEBUG "%s: packet received\n", dev->name); } break; /* * 82586 configured correctly */ case CMD_CONFIGURE_82586_RESPONSE: adapter->got[CMD_CONFIGURE_82586] = 1; if (elp_debug >= 3) printk(KERN_DEBUG "%s: interrupt - configure response received\n", dev->name); break; /* * Adapter memory configuration */ case CMD_CONFIGURE_ADAPTER_RESPONSE: adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 1; if (elp_debug >= 3) printk(KERN_DEBUG "%s: Adapter memory configuration %s.\n", dev->name, adapter->irx_pcb.data.failed ? "failed" : "succeeded"); break; /* * Multicast list loading */ case CMD_LOAD_MULTICAST_RESPONSE: adapter->got[CMD_LOAD_MULTICAST_LIST] = 1; if (elp_debug >= 3) printk(KERN_DEBUG "%s: Multicast address list loading %s.\n", dev->name, adapter->irx_pcb.data.failed ? "failed" : "succeeded"); break; /* * Station address setting */ case CMD_SET_ADDRESS_RESPONSE: adapter->got[CMD_SET_STATION_ADDRESS] = 1; if (elp_debug >= 3) printk(KERN_DEBUG "%s: Ethernet address setting %s.\n", dev->name, adapter->irx_pcb.data.failed ? "failed" : "succeeded"); break; /* * received board statistics */ case CMD_NETWORK_STATISTICS_RESPONSE: adapter->stats.rx_packets += adapter->irx_pcb.data.netstat.tot_recv; adapter->stats.tx_packets += adapter->irx_pcb.data.netstat.tot_xmit; adapter->stats.rx_crc_errors += adapter->irx_pcb.data.netstat.err_CRC; adapter->stats.rx_frame_errors += adapter->irx_pcb.data.netstat.err_align; adapter->stats.rx_fifo_errors += adapter->irx_pcb.data.netstat.err_ovrrun; adapter->stats.rx_over_errors += adapter->irx_pcb.data.netstat.err_res; adapter->got[CMD_NETWORK_STATISTICS] = 1; if (elp_debug >= 3) printk(KERN_DEBUG "%s: interrupt - statistics response received\n", dev->name); break; /* * sent a packet */ case CMD_TRANSMIT_PACKET_COMPLETE: if (elp_debug >= 3) printk(KERN_DEBUG "%s: interrupt - packet sent\n", dev->name); if (!netif_running(dev)) break; switch (adapter->irx_pcb.data.xmit_resp.c_stat) { case 0xffff: adapter->stats.tx_aborted_errors++; printk(KERN_INFO "%s: transmit timed out, network cable problem?\n", dev->name); break; case 0xfffe: adapter->stats.tx_fifo_errors++; printk(KERN_INFO "%s: transmit timed out, FIFO underrun\n", dev->name); break; } netif_wake_queue(dev); break; /* * some unknown PCB */ default: printk(KERN_DEBUG "%s: unknown PCB received - %2.2x\n", dev->name, adapter->irx_pcb.command); break; } } else { printk(KERN_WARNING "%s: failed to read PCB on interrupt\n", dev->name); adapter_reset(dev); } } } while (icount++ < 5 && (inb_status(dev->base_addr) & (ACRF | DONE))); prime_rx(dev); /* * indicate no longer in interrupt routine */ spin_unlock(&adapter->lock); return IRQ_HANDLED; }
static int send_pcb(struct net_device *dev, pcb_struct * pcb) { int i; unsigned long timeout; elp_device *adapter = dev->priv; unsigned long flags; check_3c505_dma(dev); if (adapter->dmaing && adapter->current_dma.direction == 0) return FALSE; /* Avoid contention */ if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) { if (elp_debug >= 3) { printk(KERN_DEBUG "%s: send_pcb entered while threaded\n", dev->name); } return FALSE; } /* * load each byte into the command register and * wait for the HCRE bit to indicate the adapter * had read the byte */ set_hsf(dev, 0); if (send_pcb_slow(dev->base_addr, pcb->command)) goto abort; spin_lock_irqsave(&adapter->lock, flags); if (send_pcb_fast(dev->base_addr, pcb->length)) goto sti_abort; for (i = 0; i < pcb->length; i++) { if (send_pcb_fast(dev->base_addr, pcb->data.raw[i])) goto sti_abort; } outb_control(adapter->hcr_val | 3, dev); /* signal end of PCB */ outb_command(2 + pcb->length, dev->base_addr); /* now wait for the acknowledgement */ spin_unlock_irqrestore(&adapter->lock, flags); for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) { switch (GET_ASF(dev->base_addr)) { case ASF_PCB_ACK: adapter->send_pcb_semaphore = 0; return TRUE; case ASF_PCB_NAK: #ifdef ELP_DEBUG printk(KERN_DEBUG "%s: send_pcb got NAK\n", dev->name); #endif goto abort; } } if (elp_debug >= 1) printk(KERN_DEBUG "%s: timeout waiting for PCB acknowledge (status %02x)\n", dev->name, inb_status(dev->base_addr)); goto abort; sti_abort: spin_unlock_irqrestore(&adapter->lock, flags); abort: adapter->send_pcb_semaphore = 0; return FALSE; }
static int __init elplus_setup(struct net_device *dev) { elp_device *adapter = dev->priv; int i, tries, tries1, okay; unsigned long timeout; unsigned long cookie = 0; int err = -ENODEV; SET_MODULE_OWNER(dev); /* * setup adapter structure */ dev->base_addr = elp_autodetect(dev); if (!dev->base_addr) return -ENODEV; adapter->send_pcb_semaphore = 0; for (tries1 = 0; tries1 < 3; tries1++) { outb_control((adapter->hcr_val | CMDE) & ~DIR, dev); /* First try to write just one byte, to see if the card is * responding at all normally. */ timeout = jiffies + 5*HZ/100; okay = 0; while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); if ((inb_status(dev->base_addr) & HCRE)) { outb_command(0, dev->base_addr); /* send a spurious byte */ timeout = jiffies + 5*HZ/100; while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); if (inb_status(dev->base_addr) & HCRE) okay = 1; } if (!okay) { /* Nope, it's ignoring the command register. This means that * either it's still booting up, or it's died. */ printk(KERN_ERR "%s: command register wouldn't drain, ", dev->name); if ((inb_status(dev->base_addr) & 7) == 3) { /* If the adapter status is 3, it *could* still be booting. * Give it the benefit of the doubt for 10 seconds. */ printk("assuming 3c505 still starting\n"); timeout = jiffies + 10*HZ; while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7)); if (inb_status(dev->base_addr) & 7) { printk(KERN_ERR "%s: 3c505 failed to start\n", dev->name); } else { okay = 1; /* It started */ } } else { /* Otherwise, it must just be in a strange * state. We probably need to kick it. */ printk("3c505 is sulking\n"); } } for (tries = 0; tries < 5 && okay; tries++) { /* * Try to set the Ethernet address, to make sure that the board * is working. */ adapter->tx_pcb.command = CMD_STATION_ADDRESS; adapter->tx_pcb.length = 0; cookie = probe_irq_on(); if (!send_pcb(dev, &adapter->tx_pcb)) { printk(KERN_ERR "%s: could not send first PCB\n", dev->name); probe_irq_off(cookie); continue; } if (!receive_pcb(dev, &adapter->rx_pcb)) { printk(KERN_ERR "%s: could not read first PCB\n", dev->name); probe_irq_off(cookie); continue; } if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) || (adapter->rx_pcb.length != 6)) { printk(KERN_ERR "%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length); probe_irq_off(cookie); continue; } goto okay; } /* It's broken. Do a hard reset to re-initialise the board, * and try again. */ printk(KERN_INFO "%s: resetting adapter\n", dev->name); outb_control(adapter->hcr_val | FLSH | ATTN, dev); outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev); } printk(KERN_ERR "%s: failed to initialise 3c505\n", dev->name); goto out; okay: if (dev->irq) { /* Is there a preset IRQ? */ int rpt = probe_irq_off(cookie); if (dev->irq != rpt) { printk(KERN_WARNING "%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt); } /* if dev->irq == probe_irq_off(cookie), all is well */ } else /* No preset IRQ; just use what we can detect */ dev->irq = probe_irq_off(cookie); switch (dev->irq) { /* Legal, sane? */ case 0: printk(KERN_ERR "%s: IRQ probe failed: check 3c505 jumpers.\n", dev->name); goto out; case 1: case 6: case 8: case 13: printk(KERN_ERR "%s: Impossible IRQ %d reported by probe_irq_off().\n", dev->name, dev->irq); goto out; } /* * Now we have the IRQ number so we can disable the interrupts from * the board until the board is opened. */ outb_control(adapter->hcr_val & ~CMDE, dev); /* * copy Ethernet address into structure */ for (i = 0; i < 6; i++) dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i]; /* find a DMA channel */ if (!dev->dma) { if (dev->mem_start) { dev->dma = dev->mem_start & 7; } else { printk(KERN_WARNING "%s: warning, DMA channel not specified, using default\n", dev->name); dev->dma = ELP_DMA; } } /* * print remainder of startup message */ printk(KERN_INFO "%s: 3c505 at %#lx, irq %d, dma %d, ", dev->name, dev->base_addr, dev->irq, dev->dma); printk("addr %02x:%02x:%02x:%02x:%02x:%02x, ", dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); /* * read more information from the adapter */ adapter->tx_pcb.command = CMD_ADAPTER_INFO; adapter->tx_pcb.length = 0; if (!send_pcb(dev, &adapter->tx_pcb) || !receive_pcb(dev, &adapter->rx_pcb) || (adapter->rx_pcb.command != CMD_ADAPTER_INFO_RESPONSE) || (adapter->rx_pcb.length != 10)) { printk("not responding to second PCB\n"); } printk("rev %d.%d, %dk\n", adapter->rx_pcb.data.info.major_vers, adapter->rx_pcb.data.info.minor_vers, adapter->rx_pcb.data.info.RAM_sz); /* * reconfigure the adapter memory to better suit our purposes */ adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; adapter->tx_pcb.length = 12; adapter->tx_pcb.data.memconf.cmd_q = 8; adapter->tx_pcb.data.memconf.rcv_q = 8; adapter->tx_pcb.data.memconf.mcast = 10; adapter->tx_pcb.data.memconf.frame = 10; adapter->tx_pcb.data.memconf.rcv_b = 10; adapter->tx_pcb.data.memconf.progs = 0; if (!send_pcb(dev, &adapter->tx_pcb) || !receive_pcb(dev, &adapter->rx_pcb) || (adapter->rx_pcb.command != CMD_CONFIGURE_ADAPTER_RESPONSE) || (adapter->rx_pcb.length != 2)) { printk(KERN_ERR "%s: could not configure adapter memory\n", dev->name); } if (adapter->rx_pcb.data.configure) { printk(KERN_ERR "%s: adapter configuration failed\n", dev->name); } dev->open = elp_open; /* local */ dev->stop = elp_close; /* local */ dev->get_stats = elp_get_stats; /* local */ dev->hard_start_xmit = elp_start_xmit; /* local */ dev->tx_timeout = elp_timeout; /* local */ dev->watchdog_timeo = 10*HZ; dev->set_multicast_list = elp_set_mc_list; /* local */ dev->ethtool_ops = &netdev_ethtool_ops; /* local */ memset(&(adapter->stats), 0, sizeof(struct net_device_stats)); dev->mem_start = dev->mem_end = 0; err = register_netdev(dev); if (err) goto out; return 0; out: release_region(dev->base_addr, ELP_IO_EXTENT); return err; }
static inline void set_hsf(struct net_device *dev, int hsf) { cli(); outb_control((HCR_VAL(dev) & ~HSF_PCB_MASK) | hsf, dev); sti(); }
static int elp_open(struct net_device *dev) { elp_device *adapter = netdev_priv(dev); int retval; if (elp_debug >= 3) pr_debug("%s: request to open device\n", dev->name); if (adapter == NULL) { pr_err("%s: Opening a non-existent physical device\n", dev->name); return -EAGAIN; } outb_control(0, dev); inb_command(dev->base_addr); adapter_reset(dev); adapter->rx_active = 0; adapter->busy = 0; adapter->send_pcb_semaphore = 0; adapter->rx_backlog.in = 0; adapter->rx_backlog.out = 0; spin_lock_init(&adapter->lock); if ((retval = request_irq(dev->irq, elp_interrupt, 0, dev->name, dev))) { pr_err("%s: could not allocate IRQ%d\n", dev->name, dev->irq); return retval; } if ((retval = request_dma(dev->dma, dev->name))) { free_irq(dev->irq, dev); pr_err("%s: could not allocate DMA%d channel\n", dev->name, dev->dma); return retval; } adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE); if (!adapter->dma_buffer) { pr_err("%s: could not allocate DMA buffer\n", dev->name); free_dma(dev->dma); free_irq(dev->irq, dev); return -ENOMEM; } adapter->dmaing = 0; outb_control(CMDE, dev); if (elp_debug >= 3) pr_debug("%s: sending 3c505 memory configuration command\n", dev->name); adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; adapter->tx_pcb.data.memconf.cmd_q = 10; adapter->tx_pcb.data.memconf.rcv_q = 20; adapter->tx_pcb.data.memconf.mcast = 10; adapter->tx_pcb.data.memconf.frame = 20; adapter->tx_pcb.data.memconf.rcv_b = 20; adapter->tx_pcb.data.memconf.progs = 0; adapter->tx_pcb.length = sizeof(struct Memconf); adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 0; if (!send_pcb(dev, &adapter->tx_pcb)) pr_err("%s: couldn't send memory configuration command\n", dev->name); else { unsigned long timeout = jiffies + TIMEOUT; while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && time_before(jiffies, timeout)); if (time_after_eq(jiffies, timeout)) TIMEOUT_MSG(__LINE__); } if (elp_debug >= 3) pr_debug("%s: sending 82586 configure command\n", dev->name); adapter->tx_pcb.command = CMD_CONFIGURE_82586; adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD; adapter->tx_pcb.length = 2; adapter->got[CMD_CONFIGURE_82586] = 0; if (!send_pcb(dev, &adapter->tx_pcb)) pr_err("%s: couldn't send 82586 configure command\n", dev->name); else { unsigned long timeout = jiffies + TIMEOUT; while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout)); if (time_after_eq(jiffies, timeout)) TIMEOUT_MSG(__LINE__); } prime_rx(dev); if (elp_debug >= 3) pr_debug("%s: %d receive PCBs active\n", dev->name, adapter->rx_active); netif_start_queue(dev); return 0; }
static bool send_pcb(struct net_device *dev, pcb_struct * pcb) { int i; unsigned long timeout; elp_device *adapter = netdev_priv(dev); unsigned long flags; check_3c505_dma(dev); if (adapter->dmaing && adapter->current_dma.direction == 0) return false; if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) { if (elp_debug >= 3) { pr_debug("%s: send_pcb entered while threaded\n", dev->name); } return false; } set_hsf(dev, 0); if (send_pcb_slow(dev->base_addr, pcb->command)) goto abort; spin_lock_irqsave(&adapter->lock, flags); if (send_pcb_fast(dev->base_addr, pcb->length)) goto sti_abort; for (i = 0; i < pcb->length; i++) { if (send_pcb_fast(dev->base_addr, pcb->data.raw[i])) goto sti_abort; } outb_control(adapter->hcr_val | 3, dev); outb_command(2 + pcb->length, dev->base_addr); spin_unlock_irqrestore(&adapter->lock, flags); for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) { switch (GET_ASF(dev->base_addr)) { case ASF_PCB_ACK: adapter->send_pcb_semaphore = 0; return true; case ASF_PCB_NAK: #ifdef ELP_DEBUG pr_debug("%s: send_pcb got NAK\n", dev->name); #endif goto abort; } } if (elp_debug >= 1) pr_debug("%s: timeout waiting for PCB acknowledge (status %02x)\n", dev->name, inb_status(dev->base_addr)); goto abort; sti_abort: spin_unlock_irqrestore(&adapter->lock, flags); abort: adapter->send_pcb_semaphore = 0; return false; }
static int __init elplus_setup(struct net_device *dev) { elp_device *adapter = netdev_priv(dev); int i, tries, tries1, okay; unsigned long timeout; unsigned long cookie = 0; int err = -ENODEV; dev->base_addr = elp_autodetect(dev); if (!dev->base_addr) return -ENODEV; adapter->send_pcb_semaphore = 0; for (tries1 = 0; tries1 < 3; tries1++) { outb_control((adapter->hcr_val | CMDE) & ~DIR, dev); timeout = jiffies + 5*HZ/100; okay = 0; while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); if ((inb_status(dev->base_addr) & HCRE)) { outb_command(0, dev->base_addr); timeout = jiffies + 5*HZ/100; while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE)); if (inb_status(dev->base_addr) & HCRE) okay = 1; } if (!okay) { pr_err("%s: command register wouldn't drain, ", dev->name); if ((inb_status(dev->base_addr) & 7) == 3) { pr_cont("assuming 3c505 still starting\n"); timeout = jiffies + 10*HZ; while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7)); if (inb_status(dev->base_addr) & 7) { pr_err("%s: 3c505 failed to start\n", dev->name); } else { okay = 1; } } else { pr_cont("3c505 is sulking\n"); } } for (tries = 0; tries < 5 && okay; tries++) { adapter->tx_pcb.command = CMD_STATION_ADDRESS; adapter->tx_pcb.length = 0; cookie = probe_irq_on(); if (!send_pcb(dev, &adapter->tx_pcb)) { pr_err("%s: could not send first PCB\n", dev->name); probe_irq_off(cookie); continue; } if (!receive_pcb(dev, &adapter->rx_pcb)) { pr_err("%s: could not read first PCB\n", dev->name); probe_irq_off(cookie); continue; } if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) || (adapter->rx_pcb.length != 6)) { pr_err("%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length); probe_irq_off(cookie); continue; } goto okay; } pr_info("%s: resetting adapter\n", dev->name); outb_control(adapter->hcr_val | FLSH | ATTN, dev); outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev); } pr_err("%s: failed to initialise 3c505\n", dev->name); goto out; okay: if (dev->irq) { int rpt = probe_irq_off(cookie); if (dev->irq != rpt) { pr_warning("%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt); } } else dev->irq = probe_irq_off(cookie); switch (dev->irq) { case 0: pr_err("%s: IRQ probe failed: check 3c505 jumpers.\n", dev->name); goto out; case 1: case 6: case 8: case 13: pr_err("%s: Impossible IRQ %d reported by probe_irq_off().\n", dev->name, dev->irq); goto out; } outb_control(adapter->hcr_val & ~CMDE, dev); for (i = 0; i < 6; i++) dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i]; if (!dev->dma) { if (dev->mem_start) { dev->dma = dev->mem_start & 7; } else { pr_warning("%s: warning, DMA channel not specified, using default\n", dev->name); dev->dma = ELP_DMA; } } pr_info("%s: 3c505 at %#lx, irq %d, dma %d, addr %pM, ", dev->name, dev->base_addr, dev->irq, dev->dma, dev->dev_addr); adapter->tx_pcb.command = CMD_ADAPTER_INFO; adapter->tx_pcb.length = 0; if (!send_pcb(dev, &adapter->tx_pcb) || !receive_pcb(dev, &adapter->rx_pcb) || (adapter->rx_pcb.command != CMD_ADAPTER_INFO_RESPONSE) || (adapter->rx_pcb.length != 10)) { pr_cont("not responding to second PCB\n"); } pr_cont("rev %d.%d, %dk\n", adapter->rx_pcb.data.info.major_vers, adapter->rx_pcb.data.info.minor_vers, adapter->rx_pcb.data.info.RAM_sz); adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY; adapter->tx_pcb.length = 12; adapter->tx_pcb.data.memconf.cmd_q = 8; adapter->tx_pcb.data.memconf.rcv_q = 8; adapter->tx_pcb.data.memconf.mcast = 10; adapter->tx_pcb.data.memconf.frame = 10; adapter->tx_pcb.data.memconf.rcv_b = 10; adapter->tx_pcb.data.memconf.progs = 0; if (!send_pcb(dev, &adapter->tx_pcb) || !receive_pcb(dev, &adapter->rx_pcb) || (adapter->rx_pcb.command != CMD_CONFIGURE_ADAPTER_RESPONSE) || (adapter->rx_pcb.length != 2)) { pr_err("%s: could not configure adapter memory\n", dev->name); } if (adapter->rx_pcb.data.configure) { pr_err("%s: adapter configuration failed\n", dev->name); } dev->netdev_ops = &elp_netdev_ops; dev->watchdog_timeo = 10*HZ; dev->ethtool_ops = &netdev_ethtool_ops; dev->mem_start = dev->mem_end = 0; err = register_netdev(dev); if (err) goto out; return 0; out: release_region(dev->base_addr, ELP_IO_EXTENT); return err; }