patch-2.3.22 linux/drivers/net/tokenring/sktr.c
Next file: linux/drivers/net/tokenring/sktr.h
Previous file: linux/drivers/net/tokenring/Makefile
Back to the patch index
Back to the overall index
- Lines: 2708
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.21/linux/drivers/net/tokenring/sktr.c
- Orig date:
Mon Oct 11 15:38:15 1999
diff -u --recursive --new-file v2.3.21/linux/drivers/net/tokenring/sktr.c linux/drivers/net/tokenring/sktr.c
@@ -1,2707 +0,0 @@
-/*
- * sktr.c: A network driver for the SysKonnect Token Ring ISA/PCI Adapters.
- *
- * Written 1997 by Christoph Goos
- *
- * A fine result of the Linux Systems Network Architecture Project.
- * http://samba.anu.edu.au/linux-sna/
- *
- * This software may be used and distributed according to the terms
- * of the GNU Public License, incorporated herein by reference.
- *
- * This device driver works with the following SysKonnect adapters:
- * - SysKonnect TR4/16(+) ISA (SK-4190)
- * - SysKonnect TR4/16(+) PCI (SK-4590)
- * - SysKonnect TR4/16 PCI (SK-4591)
- *
- * Sources:
- * - The hardware related parts of this driver are take from
- * the SysKonnect Token Ring driver for Windows NT.
- * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
- * driver, as well as the 'skeleton.c' driver by Donald Becker.
- * - Also various other drivers in the linux source tree were taken
- * as samples for some tasks.
- *
- * Maintainer(s):
- * JS Jay Schulist jschlst@samba.anu.edu.au
- * CG Christoph Goos cgoos@syskonnect.de
- * AF Adam Fritzler mid@auk.cx
- *
- * Modification History:
- * 29-Aug-97 CG Created
- * 04-Apr-98 CG Fixed problems caused by tok_timer_check
- * 10-Apr-98 CG Fixed lockups at cable disconnection
- * 27-May-98 JS Formated to Linux Kernel Format
- * 31-May-98 JS Hacked in PCI support
- * 16-Jun-98 JS Modulized for multiple cards with one driver
- * 21-Sep-99 CG Fixed source routing issues for 2.2 kernels
- * 21-Sep-99 AF Added multicast changes recommended by
- * Jochen Friedrich <jochen@nwe.de> (untested)
- * Added detection of compatible Compaq PCI card
- *
- * To do:
- * 1. Selectable 16 Mbps or 4Mbps
- * 2. Multi/Broadcast packet handling (might be done)
- *
- */
-
-static const char *version = "sktr.c: v1.01 08/29/97 by Christoph Goos\n";
-
-#ifdef MODULE
-#include <linux/module.h>
-#include <linux/version.h>
-#endif
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/malloc.h>
-#include <linux/string.h>
-#include <linux/time.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/trdevice.h>
-
-#include "sktr.h" /* Our Stuff */
-#include "sktr_firmware.h" /* SysKonnect adapter firmware */
-
-/* A zero-terminated list of I/O addresses to be probed. */
-static unsigned int sktr_portlist[] __initdata = {
- 0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,
- 0
-};
-
-/* A zero-terminated list of IRQs to be probed.
- * Used again after initial probe for sktr_chipset_init, called from sktr_open.
- */
-static unsigned short sktr_irqlist[] = {
- 3, 5, 9, 10, 11, 12, 15,
- 0
-};
-
-/* A zero-terminated list of DMAs to be probed. */
-static int sktr_dmalist[] __initdata = {
- 5, 6, 7,
- 0
-};
-
-/* Card names */
-static char *pci_cardname = "SK NET TR 4/16 PCI\0";
-static char *isa_cardname = "SK NET TR 4/16 ISA\0";
-static char *AdapterName;
-
-/* Use 0 for production, 1 for verification, 2 for debug, and
- * 3 for very verbose debug.
- */
-#ifndef SKTR_DEBUG
-#define SKTR_DEBUG 1
-#endif
-static unsigned int sktr_debug = SKTR_DEBUG;
-
-/* The number of low I/O ports used by the tokencard. */
-#define SKTR_IO_EXTENT 32
-
-/* Index to functions, as function prototypes.
- * Alphabetical by function name.
- */
-
-/* "B" */
-static int sktr_bringup_diags(struct net_device *dev);
-/* "C" */
-static void sktr_cancel_tx_queue(struct net_local* tp);
-static int sktr_chipset_init(struct net_device *dev);
-static void sktr_chk_irq(struct net_device *dev);
-static unsigned char sktr_chk_frame(struct net_device *dev, unsigned char *Addr);
-static void sktr_chk_outstanding_cmds(struct net_device *dev);
-static void sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
-static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType);
-static int sktr_close(struct net_device *dev);
-static void sktr_cmd_status_irq(struct net_device *dev);
-/* "D" */
-static void sktr_disable_interrupts(struct net_device *dev);
-static void sktr_dump(unsigned char *Data, int length);
-/* "E" */
-static void sktr_enable_interrupts(struct net_device *dev);
-static void sktr_exec_cmd(struct net_device *dev, unsigned short Command);
-static void sktr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
-/* "F" */
-/* "G" */
-static struct enet_statistics *sktr_get_stats(struct net_device *dev);
-/* "H" */
-static void sktr_hardware_send_packet(struct net_device *dev,
- struct net_local* tp);
-/* "I" */
-static int sktr_init_adapter(struct net_device *dev);
-static int sktr_init_card(struct net_device *dev);
-static void sktr_init_ipb(struct net_local *tp);
-static void sktr_init_net_local(struct net_device *dev);
-static void sktr_init_opb(struct net_local *tp);
-static void sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static int sktr_isa_chk_card(struct net_device *dev, int ioaddr);
-static int sktr_isa_chk_ioaddr(int ioaddr);
-/* "O" */
-static int sktr_open(struct net_device *dev);
-static void sktr_open_adapter(struct net_device *dev);
-/* "P" */
-static int sktr_pci_chk_card(struct net_device *dev);
-int sktr_probe(struct net_device *dev);
-static int sktr_probe1(struct net_device *dev, int ioaddr);
-/* "R" */
-static void sktr_rcv_status_irq(struct net_device *dev);
-static void sktr_read_addr(struct net_device *dev, unsigned char *Address);
-static void sktr_read_ptr(struct net_device *dev);
-static void sktr_read_ram(struct net_device *dev, unsigned char *Data,
- unsigned short Address, int Length);
-static int sktr_reset_adapter(struct net_device *dev);
-static void sktr_reset_interrupt(struct net_device *dev);
-static void sktr_ring_status_irq(struct net_device *dev);
-/* "S" */
-static int sktr_send_packet(struct sk_buff *skb, struct net_device *dev);
-static void sktr_set_multicast_list(struct net_device *dev);
-/* "T" */
-static void sktr_timer_chk(unsigned long data);
-static void sktr_timer_end_wait(unsigned long data);
-static void sktr_tx_status_irq(struct net_device *dev);
-/* "U" */
-static void sktr_update_rcv_stats(struct net_local *tp,
- unsigned char DataPtr[], unsigned int Length);
-/* "W" */
-static void sktr_wait(unsigned long time);
-static void sktr_write_rpl_status(RPL *rpl, unsigned int Status);
-static void sktr_write_tpl_status(TPL *tpl, unsigned int Status);
-
-/*
- * Check for a network adapter of this type, and return '0' if one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- */
-int __init sktr_probe(struct net_device *dev)
-{
- int i;
- int base_addr = dev ? dev->base_addr : 0;
-
- if(base_addr > 0x1ff) /* Check a single specified location. */
- return (sktr_probe1(dev, base_addr));
- else if(base_addr != 0) /* Don't probe at all. */
- return (-ENXIO);
-
- for(i = 0; sktr_portlist[i]; i++)
- {
- int ioaddr = sktr_portlist[i];
- if(check_region(ioaddr, SKTR_IO_EXTENT))
- continue;
- if(sktr_probe1(dev, ioaddr))
- {
-#ifndef MODULE
- tr_freedev(dev);
-#endif
- }
- else
- return (0);
- }
-
- return (-ENODEV);
-}
-
-/*
- * Detect and setup the PCI SysKonnect TR cards in slot order.
- */
-static int __init sktr_pci_chk_card(struct net_device *dev)
-{
- static int pci_index = 0;
- unsigned char pci_bus, pci_device_fn;
-
- if(!pci_present())
- return (-1); /* No PCI present. */
-
- for(; pci_index < 0xff; pci_index++)
- {
- unsigned int pci_irq_line;
- struct pci_dev *pdev;
- unsigned short pci_command, new_command, vendor, device;
- unsigned int pci_ioaddr;
-
- if(pcibios_find_class(PCI_CLASS_NETWORK_TOKEN_RING << 8,
- pci_index, &pci_bus, &pci_device_fn)
- != PCIBIOS_SUCCESSFUL)
- {
- break;
- }
-
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_VENDOR_ID, &vendor);
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_DEVICE_ID, &device);
-
- pdev = pci_find_slot(pci_bus, pci_device_fn);
- pci_irq_line = pdev->irq;
- pci_ioaddr = pdev->resource[0].start;
-
- pcibios_read_config_word(pci_bus, pci_device_fn,
- PCI_COMMAND, &pci_command);
-
- /* Remove I/O space marker in bit 0. */
- pci_ioaddr &= ~3;
-
- if((vendor != PCI_VENDOR_ID_SK) &&
- (vendor != PCI_VENDOR_ID_COMPAQ))
- continue;
-
- if((vendor == PCI_VENDOR_ID_SK) &&
- (device != PCI_DEVICE_ID_SK_TR))
- continue;
- else if((vendor == PCI_VENDOR_ID_COMPAQ) &&
- (device != PCI_DEVICE_ID_COMPAQ_TOKENRING))
- continue;
-
- if(check_region(pci_ioaddr, SKTR_IO_EXTENT))
- continue;
- request_region(pci_ioaddr, SKTR_IO_EXTENT, pci_cardname);
- if(request_irq(pdev->irq, sktr_interrupt, SA_SHIRQ,
- pci_cardname, dev))
- return (-ENODEV); /* continue; ?? */
-
- AdapterName = pci_cardname;
-
- new_command = (pci_command|PCI_COMMAND_MASTER|PCI_COMMAND_IO);
-
- if(pci_command != new_command)
- {
- printk("The PCI BIOS has not enabled this"
- "device! Updating PCI command %4.4x->%4.4x.\n",
- pci_command, new_command);
- pcibios_write_config_word(pci_bus, pci_device_fn,
- PCI_COMMAND, new_command);
- }
-
- /* At this point we have found a valid PCI TR card. */
- dev->base_addr = pci_ioaddr;
- dev->irq = pci_irq_line;
- dev->dma = 0;
-
- printk("%s: %s found at %#4x, using IRQ %d.\n",
- dev->name, AdapterName, pci_ioaddr, dev->irq);
-
- return (0);
- }
-
- return (-1);
-}
-
-/*
- * Detect and setup the ISA SysKonnect TR cards.
- */
-static int __init sktr_isa_chk_card(struct net_device *dev, int ioaddr)
-{
- int i, err;
- unsigned long flags;
-
- err = sktr_isa_chk_ioaddr(ioaddr);
- if(err < 0)
- return (-ENODEV);
-
- if(virt_to_bus((void*)((unsigned long)dev->priv+sizeof(struct net_local)))
- > ISA_MAX_ADDRESS)
- {
- printk("%s: Memory not accessible for DMA\n", dev->name);
- kfree(dev->priv);
- return (-EAGAIN);
- }
-
- AdapterName = isa_cardname;
-
- /* Grab the region so that no one else tries to probe our ioports. */
- request_region(ioaddr, SKTR_IO_EXTENT, AdapterName);
- dev->base_addr = ioaddr;
-
- /* Autoselect IRQ and DMA if dev->irq == 0 */
- if(dev->irq == 0)
- {
- for(i = 0; sktr_irqlist[i] != 0; i++)
- {
- dev->irq = sktr_irqlist[i];
- err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
- if(!err)
- break;
- }
-
- if(sktr_irqlist[i] == 0)
- {
- printk("%s: AutoSelect no IRQ available\n", dev->name);
- return (-EAGAIN);
- }
- }
- else
- {
- err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
- if(err)
- {
- printk("%s: Selected IRQ not available\n", dev->name);
- return (-EAGAIN);
- }
- }
-
- /* Always allocate the DMA channel after IRQ and clean up on failure */
- if(dev->dma == 0)
- {
- for(i = 0; sktr_dmalist[i] != 0; i++)
- {
- dev->dma = sktr_dmalist[i];
- err = request_dma(dev->dma, AdapterName);
- if(!err)
- break;
- }
-
- if(dev->dma == 0)
- {
- printk("%s: AutoSelect no DMA available\n", dev->name);
- free_irq(dev->irq, NULL);
- return (-EAGAIN);
- }
- }
- else
- {
- err = request_dma(dev->dma, AdapterName);
- if(err)
- {
- printk("%s: Selected DMA not available\n", dev->name);
- free_irq(dev->irq, NULL);
- return (-EAGAIN);
- }
- }
-
- flags=claim_dma_lock();
- disable_dma(dev->dma);
- set_dma_mode(dev->dma, DMA_MODE_CASCADE);
- enable_dma(dev->dma);
- release_dma_lock(flags);
-
- printk("%s: %s found at %#4x, using IRQ %d and DMA %d.\n",
- dev->name, AdapterName, ioaddr, dev->irq, dev->dma);
-
- return (0);
-}
-
-static int __init sktr_probe1(struct net_device *dev, int ioaddr)
-{
- static unsigned version_printed = 0;
- struct net_local *tp;
- int DeviceType = SK_PCI;
- int err;
-
- if(sktr_debug && version_printed++ == 0)
- printk("%s", version);
-
-#ifndef MODULE
- dev = init_trdev(dev, 0);
- if(dev == NULL)
- return (-ENOMEM);
-#endif
-
- err = sktr_pci_chk_card(dev);
- if(err < 0)
- {
- err = sktr_isa_chk_card(dev, ioaddr);
- if(err < 0)
- return (-ENODEV);
- DeviceType = SK_ISA;
- }
-
- /* Setup this devices private information structure */
- tp = (struct net_local *)kmalloc(sizeof(struct net_local), GFP_KERNEL | GFP_DMA);
- if(tp == NULL)
- return (-ENOMEM);
- memset(tp, 0, sizeof(struct net_local));
- tp->DeviceType = DeviceType;
- init_waitqueue_head(&tp->wait_for_tok_int);
-
- dev->priv = tp;
- dev->init = sktr_init_card;
- dev->open = sktr_open;
- dev->stop = sktr_close;
- dev->hard_start_xmit = sktr_send_packet;
- dev->get_stats = sktr_get_stats;
- dev->set_multicast_list = &sktr_set_multicast_list;
-
- return (0);
-}
-
-/* Dummy function */
-static int __init sktr_init_card(struct net_device *dev)
-{
- if(sktr_debug > 3)
- printk("%s: sktr_init_card\n", dev->name);
-
- return (0);
-}
-
-/*
- * This function tests if an adapter is really installed at the
- * given I/O address. Return negative if no adapter at IO addr.
- */
-static int __init sktr_isa_chk_ioaddr(int ioaddr)
-{
- unsigned char old, chk1, chk2;
-
- old = inb(ioaddr + SIFADR); /* Get the old SIFADR value */
-
- chk1 = 0; /* Begin with check value 0 */
- do {
- /* Write new SIFADR value */
- outb(chk1, ioaddr + SIFADR);
-
- /* Read, invert and write */
- chk2 = inb(ioaddr + SIFADD);
- chk2 ^= 0x0FE;
- outb(chk2, ioaddr + SIFADR);
-
- /* Read, invert and compare */
- chk2 = inb(ioaddr + SIFADD);
- chk2 ^= 0x0FE;
-
- if(chk1 != chk2)
- return (-1); /* No adapter */
-
- chk1 -= 2;
- } while(chk1 != 0); /* Repeat 128 times (all byte values) */
-
- /* Restore the SIFADR value */
- outb(old, ioaddr + SIFADR);
-
- return (0);
-}
-
-/*
- * Open/initialize the board. This is called sometime after
- * booting when the 'ifconfig' program is run.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
-static int sktr_open(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- int err;
-
- /* Reset the hardware here. Don't forget to set the station address. */
- err = sktr_chipset_init(dev);
- if(err)
- {
- printk(KERN_INFO "%s: Chipset initialization error\n",
- dev->name);
- return (-1);
- }
-
- dev->addr_len = 6;
- sktr_read_addr(dev, (unsigned char*)dev->dev_addr);
-
- init_timer(&tp->timer);
- tp->timer.expires = jiffies + 30*HZ;
- tp->timer.function = sktr_timer_end_wait;
- tp->timer.data = (unsigned long)dev;
- tp->timer.next = NULL;
- tp->timer.prev = NULL;
- add_timer(&tp->timer);
-
- sktr_read_ptr(dev);
- sktr_enable_interrupts(dev);
- sktr_open_adapter(dev);
-
- dev->tbusy = 0;
- dev->interrupt = 0;
- dev->start = 0;
-
- /* Wait for interrupt from hardware. If interrupt does not come,
- * there will be a timeout from the timer.
- */
- tp->Sleeping = 1;
- interruptible_sleep_on(&tp->wait_for_tok_int);
- del_timer(&tp->timer);
-
- /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
- if(tp->AdapterVirtOpenFlag == 0)
- {
- sktr_disable_interrupts(dev);
- return (-1);
- }
-
- dev->start = 1;
-
- tp->StartTime = jiffies;
-
- /* Start function control timer */
- tp->timer.expires = jiffies + 2*HZ;
- tp->timer.function = sktr_timer_chk;
- tp->timer.data = (unsigned long)dev;
- add_timer(&tp->timer);
-
-#ifdef MODULE
- MOD_INC_USE_COUNT;
-#endif
-
- return (0);
-}
-
-/*
- * Timeout function while waiting for event
- */
-static void sktr_timer_end_wait(unsigned long data)
-{
- struct net_device *dev = (struct net_device*)data;
- struct net_local *tp = (struct net_local *)dev->priv;
-
- if(tp->Sleeping)
- {
- tp->Sleeping = 0;
- wake_up_interruptible(&tp->wait_for_tok_int);
- }
-
- return;
-}
-
-/*
- * Initialize the chipset
- */
-static int sktr_chipset_init(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned char PosReg, Tmp;
- int i, err;
-
- sktr_init_ipb(tp);
- sktr_init_opb(tp);
- sktr_init_net_local(dev);
-
- /* Set pos register: selects irq and dma channel.
- * Only for ISA bus adapters.
- */
- if(dev->dma > 0)
- {
- PosReg = 0;
- for(i = 0; sktr_irqlist[i] != 0; i++)
- {
- if(sktr_irqlist[i] == dev->irq)
- break;
- }
-
- /* Choose default cycle time, 500 nsec */
- PosReg |= CYCLE_TIME << 2;
- PosReg |= i << 4;
- i = dev->dma - 5;
- PosReg |= i;
-
- if(tp->DataRate == SPEED_4)
- PosReg |= LINE_SPEED_BIT;
- else
- PosReg &= ~LINE_SPEED_BIT;
-
- outb(PosReg, dev->base_addr + POSREG);
- Tmp = inb(dev->base_addr + POSREG);
- if((Tmp & ~CYCLE_TIME) != (PosReg & ~CYCLE_TIME))
- printk(KERN_INFO "%s: POSREG error\n", dev->name);
- }
-
- err = sktr_reset_adapter(dev);
- if(err < 0)
- return (-1);
-
- err = sktr_bringup_diags(dev);
- if(err < 0)
- return (-1);
-
- err = sktr_init_adapter(dev);
- if(err < 0)
- return (-1);
-
- return (0);
-}
-
-/*
- * Initializes the net_local structure.
- */
-static void sktr_init_net_local(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- int i;
-
- tp->scb.CMD = 0;
- tp->scb.Parm[0] = 0;
- tp->scb.Parm[1] = 0;
-
- tp->ssb.STS = 0;
- tp->ssb.Parm[0] = 0;
- tp->ssb.Parm[1] = 0;
- tp->ssb.Parm[2] = 0;
-
- tp->CMDqueue = 0;
-
- tp->AdapterOpenFlag = 0;
- tp->AdapterVirtOpenFlag = 0;
- tp->ScbInUse = 0;
- tp->OpenCommandIssued = 0;
- tp->ReOpenInProgress = 0;
- tp->HaltInProgress = 0;
- tp->TransmitHaltScheduled = 0;
- tp->LobeWireFaultLogged = 0;
- tp->LastOpenStatus = 0;
- tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
-
- skb_queue_head_init(&tp->SendSkbQueue);
- tp->QueueSkb = MAX_TX_QUEUE;
-
- /* Create circular chain of transmit lists */
- for (i = 0; i < TPL_NUM; i++)
- {
- tp->Tpl[i].NextTPLAddr = htonl((unsigned long) virt_to_bus(&tp->Tpl[(i+1) % TPL_NUM]));
- tp->Tpl[i].Status = 0;
- tp->Tpl[i].FrameSize = 0;
- tp->Tpl[i].FragList[0].DataCount = 0;
- tp->Tpl[i].FragList[0].DataAddr = 0;
- tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
- tp->Tpl[i].MData = NULL;
- tp->Tpl[i].TPLIndex = i;
- tp->Tpl[i].BusyFlag = 0;
- }
-
- tp->TplFree = tp->TplBusy = &tp->Tpl[0];
-
- /* Create circular chain of receive lists */
- for (i = 0; i < RPL_NUM; i++)
- {
- tp->Rpl[i].NextRPLAddr = htonl((unsigned long) virt_to_bus(&tp->Rpl[(i+1) % RPL_NUM]));
- tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
- tp->Rpl[i].FrameSize = 0;
- tp->Rpl[i].FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
-
- /* Alloc skb and point adapter to data area */
- tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
-
- /* skb == NULL ? then use local buffer */
- if(tp->Rpl[i].Skb == NULL)
- {
- tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
- tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
- tp->Rpl[i].MData = tp->LocalRxBuffers[i];
- }
- else /* SKB != NULL */
- {
- tp->Rpl[i].Skb->dev = dev;
- skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
-
- /* data unreachable for DMA ? then use local buffer */
- if(tp->DeviceType == SK_ISA &&
- virt_to_bus(tp->Rpl[i].Skb->data) +
- tp->MaxPacketSize > ISA_MAX_ADDRESS)
- {
- tp->Rpl[i].SkbStat = SKB_DATA_COPY;
- tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
- tp->Rpl[i].MData = tp->LocalRxBuffers[i];
- }
- else /* DMA directly in skb->data */
- {
- tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
- tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->Rpl[i].Skb->data));
- tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
- }
- }
-
- tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
- tp->Rpl[i].RPLIndex = i;
- }
-
- tp->RplHead = &tp->Rpl[0];
- tp->RplTail = &tp->Rpl[RPL_NUM-1];
- tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
-
- return;
-}
-
-/*
- * Initializes the initialisation parameter block.
- */
-static void sktr_init_ipb(struct net_local *tp)
-{
- tp->ipb.Init_Options = BURST_MODE;
- tp->ipb.CMD_Status_IV = 0;
- tp->ipb.TX_IV = 0;
- tp->ipb.RX_IV = 0;
- tp->ipb.Ring_Status_IV = 0;
- tp->ipb.SCB_Clear_IV = 0;
- tp->ipb.Adapter_CHK_IV = 0;
- tp->ipb.RX_Burst_Size = BURST_SIZE;
- tp->ipb.TX_Burst_Size = BURST_SIZE;
- tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
- tp->ipb.SCB_Addr = 0;
- tp->ipb.SSB_Addr = 0;
-
- return;
-}
-
-/*
- * Initializes the open parameter block.
- */
-static void sktr_init_opb(struct net_local *tp)
-{
- unsigned long Addr;
- unsigned short RplSize = RPL_SIZE;
- unsigned short TplSize = TPL_SIZE;
- unsigned short BufferSize = BUFFER_SIZE;
-
- tp->ocpl.OPENOptions = 0;
- tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
-/* tp->ocpl.OPENOptions |= PAD_ROUTING_FIELD; no more needed */
- tp->ocpl.FullDuplex = 0;
- tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
-
- /* Fixme: If mac address setable:
- * for (i=0; i<LENGTH_OF_ADDRESS; i++)
- * mac->Vam->ocpl.NodeAddr[i] = mac->CurrentAddress[i];
- */
-
- tp->ocpl.GroupAddr = 0;
- tp->ocpl.FunctAddr = 0;
- tp->ocpl.RxListSize = SWAPB(RplSize);
- tp->ocpl.TxListSize = SWAPB(TplSize);
- tp->ocpl.BufSize = SWAPB(BufferSize);
- tp->ocpl.Reserved = 0;
- tp->ocpl.TXBufMin = TX_BUF_MIN;
- tp->ocpl.TXBufMax = TX_BUF_MAX;
-
- Addr = htonl(virt_to_bus(tp->ProductID));
-
- tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
- tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
-
- return;
-}
-
-/*
- * Send OPEN command to adapter
- */
-static void sktr_open_adapter(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- if(tp->OpenCommandIssued)
- return;
-
- tp->OpenCommandIssued = 1;
- sktr_exec_cmd(dev, OC_OPEN);
-
- return;
-}
-
-/*
- * Clear the adapter's interrupt flag. Clear system interrupt enable
- * (SINTEN): disable adapter to system interrupts.
- */
-static void sktr_disable_interrupts(struct net_device *dev)
-{
- outb(0, dev->base_addr + SIFACL);
-
- return;
-}
-
-/*
- * Set the adapter's interrupt flag. Set system interrupt enable
- * (SINTEN): enable adapter to system interrupts.
- */
-static void sktr_enable_interrupts(struct net_device *dev)
-{
- outb(ACL_SINTEN, dev->base_addr + SIFACL);
-
- return;
-}
-
-/*
- * Put command in command queue, try to execute it.
- */
-static void sktr_exec_cmd(struct net_device *dev, unsigned short Command)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- tp->CMDqueue |= Command;
- sktr_chk_outstanding_cmds(dev);
-
- return;
-}
-
-/*
- * Gets skb from system, queues it and checks if it can be sent
- */
-static int sktr_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- if(dev->tbusy)
- {
- /*
- * If we get here, some higher level has decided we are broken.
- * There should really be a "kick me" function call instead.
- *
- * Resetting the token ring adapter takes a long time so just
- * fake transmission time and go on trying. Our own timeout
- * routine is in sktr_timer_chk()
- */
- dev->tbusy = 0;
- dev->trans_start = jiffies;
- return (1);
- }
-
- /*
- * If some higher layer thinks we've missed an tx-done interrupt we
- * are passed NULL.
- */
- if(skb == NULL)
- return (0);
-
- /*
- * Block a timer-based transmit from overlapping. This could better be
- * done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
- */
- if(test_and_set_bit(0, (void*)&dev->tbusy) != 0)
- {
- printk("%s: Transmitter access conflict.\n", dev->name);
- return (1);
- }
-
- if(tp->QueueSkb == 0)
- return (1); /* Return with tbusy set: queue full */
-
- tp->QueueSkb--;
- skb_queue_tail(&tp->SendSkbQueue, skb);
- sktr_hardware_send_packet(dev, tp);
- if(tp->QueueSkb > 0)
- dev->tbusy = 0;
-
- return (0);
-}
-
-/*
- * Move frames from internal skb queue into adapter tx queue
- */
-static void sktr_hardware_send_packet(struct net_device *dev, struct net_local* tp)
-{
- TPL *tpl;
- short length;
- unsigned char *buf, *newbuf;
- struct sk_buff *skb;
- int i;
-
- for(;;)
- {
- /* Try to get a free TPL from the chain.
- *
- * NOTE: We *must* always leave one unused TPL in the chain,
- * because otherwise the adapter might send frames twice.
- */
- if(tp->TplFree->NextTPLPtr->BusyFlag) /* No free TPL */
- {
- printk(KERN_INFO "%s: No free TPL\n", dev->name);
- return;
- }
-
- /* Send first buffer from queue */
- skb = skb_dequeue(&tp->SendSkbQueue);
- if(skb == NULL)
- return;
-
- tp->QueueSkb++;
- /* Is buffer reachable for Busmaster-DMA? */
- if(tp->DeviceType == SK_ISA &&
- virt_to_bus((void*)(((long) skb->data) + skb->len))
- > ISA_MAX_ADDRESS)
- {
- /* Copy frame to local buffer */
- i = tp->TplFree->TPLIndex;
- length = skb->len;
- buf = tp->LocalTxBuffers[i];
- memcpy(buf, skb->data, length);
- newbuf = buf;
- }
- else
- {
- /* Send direct from skb->data */
- length = skb->len;
- newbuf = skb->data;
- }
-
- /* Source address in packet? */
- sktr_chk_src_addr(newbuf, dev->dev_addr);
-
- tp->LastSendTime = jiffies;
- tpl = tp->TplFree; /* Get the "free" TPL */
- tpl->BusyFlag = 1; /* Mark TPL as busy */
- tp->TplFree = tpl->NextTPLPtr;
-
- /* Save the skb for delayed return of skb to system */
- tpl->Skb = skb;
- tpl->FragList[0].DataCount = (unsigned short) SWAPB(length);
- tpl->FragList[0].DataAddr = htonl(virt_to_bus(newbuf));
-
- /* Write the data length in the transmit list. */
- tpl->FrameSize = (unsigned short) SWAPB(length);
- tpl->MData = newbuf;
-
- /* Transmit the frame and set the status values. */
- sktr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
- | TX_END_FRAME | TX_PASS_SRC_ADDR
- | TX_FRAME_IRQ);
-
- /* Let adapter send the frame. */
- sktr_exec_sifcmd(dev, CMD_TX_VALID);
- }
-
- return;
-}
-
-/*
- * Write the given value to the 'Status' field of the specified TPL.
- * NOTE: This function should be used whenever the status of any TPL must be
- * modified by the driver, because the compiler may otherwise change the
- * order of instructions such that writing the TPL status may be executed at
- * an undesireable time. When this function is used, the status is always
- * written when the function is called.
- */
-static void sktr_write_tpl_status(TPL *tpl, unsigned int Status)
-{
- tpl->Status = Status;
-}
-
-static void sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
-{
- unsigned char SRBit;
-
- if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
- return;
- if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
- return;
-
- SRBit = frame[8] & 0x80;
- memcpy(&frame[8], hw_addr, 6);
- frame[8] |= SRBit;
-
- return;
-}
-
-/*
- * The timer routine: Check if adapter still open and working, reopen if not.
- */
-static void sktr_timer_chk(unsigned long data)
-{
- struct net_device *dev = (struct net_device*)data;
- struct net_local *tp = (struct net_local*)dev->priv;
-
- if(tp->HaltInProgress)
- return;
-
- sktr_chk_outstanding_cmds(dev);
- if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
- && (tp->QueueSkb < MAX_TX_QUEUE || tp->TplFree != tp->TplBusy))
- {
- /* Anything to send, but stalled to long */
- tp->LastSendTime = jiffies;
- sktr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
- }
-
- tp->timer.expires = jiffies + 2*HZ;
- add_timer(&tp->timer);
-
- if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
- return;
- tp->ReOpenInProgress = 1;
- sktr_open_adapter(dev);
-
- return;
-}
-
-/*
- * The typical workload of the driver: Handle the network interface interrupts.
- */
-static void sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct net_device *dev = dev_id;
- struct net_local *tp;
- int ioaddr;
- unsigned short irq_type;
-
- if(dev == NULL)
- {
- printk("%s: irq %d for unknown device.\n", dev->name, irq);
- return;
- }
-
- dev->interrupt = 1;
-
- ioaddr = dev->base_addr;
- tp = (struct net_local *)dev->priv;
-
- irq_type = inw(ioaddr + SIFSTS);
-
- while(irq_type & STS_SYSTEM_IRQ)
- {
- irq_type &= STS_IRQ_MASK;
-
- if(!sktr_chk_ssb(tp, irq_type))
- {
- printk(KERN_INFO "%s: DATA LATE occurred\n", dev->name);
- break;
- }
-
- switch(irq_type)
- {
- case STS_IRQ_RECEIVE_STATUS:
- sktr_reset_interrupt(dev);
- sktr_rcv_status_irq(dev);
- break;
-
- case STS_IRQ_TRANSMIT_STATUS:
- /* Check if TRANSMIT.HALT command is complete */
- if(tp->ssb.Parm[0] & COMMAND_COMPLETE)
- {
- tp->TransmitCommandActive = 0;
- tp->TransmitHaltScheduled = 0;
-
- /* Issue a new transmit command. */
- sktr_exec_cmd(dev, OC_TRANSMIT);
- }
-
- sktr_reset_interrupt(dev);
- sktr_tx_status_irq(dev);
- break;
-
- case STS_IRQ_COMMAND_STATUS:
- /* The SSB contains status of last command
- * other than receive/transmit.
- */
- sktr_cmd_status_irq(dev);
- break;
-
- case STS_IRQ_SCB_CLEAR:
- /* The SCB is free for another command. */
- tp->ScbInUse = 0;
- sktr_chk_outstanding_cmds(dev);
- break;
-
- case STS_IRQ_RING_STATUS:
- sktr_ring_status_irq(dev);
- break;
-
- case STS_IRQ_ADAPTER_CHECK:
- sktr_chk_irq(dev);
- break;
-
- default:
- printk(KERN_INFO "Unknown Token Ring IRQ\n");
- break;
- }
-
- /* Reset system interrupt if not already done. */
- if(irq_type != STS_IRQ_TRANSMIT_STATUS
- && irq_type != STS_IRQ_RECEIVE_STATUS)
- {
- sktr_reset_interrupt(dev);
- }
-
- irq_type = inw(ioaddr + SIFSTS);
- }
-
- dev->interrupt = 0;
-
- return;
-}
-
-/*
- * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
- */
-static void sktr_reset_interrupt(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- SSB *ssb = &tp->ssb;
-
- /*
- * [Workaround for "Data Late"]
- * Set all fields of the SSB to well-defined values so we can
- * check if the adapter has written the SSB.
- */
-
- ssb->STS = (unsigned short) -1;
- ssb->Parm[0] = (unsigned short) -1;
- ssb->Parm[1] = (unsigned short) -1;
- ssb->Parm[2] = (unsigned short) -1;
-
- /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
- * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
- */
- sktr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
-
- return;
-}
-
-/*
- * Check if the SSB has actually been written by the adapter.
- */
-static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType)
-{
- SSB *ssb = &tp->ssb; /* The address of the SSB. */
-
- /* C 0 1 2 INTERRUPT CODE
- * - - - - --------------
- * 1 1 1 1 TRANSMIT STATUS
- * 1 1 1 1 RECEIVE STATUS
- * 1 ? ? 0 COMMAND STATUS
- * 0 0 0 0 SCB CLEAR
- * 1 1 0 0 RING STATUS
- * 0 0 0 0 ADAPTER CHECK
- *
- * 0 = SSB field not affected by interrupt
- * 1 = SSB field is affected by interrupt
- *
- * C = SSB ADDRESS +0: COMMAND
- * 0 = SSB ADDRESS +2: STATUS 0
- * 1 = SSB ADDRESS +4: STATUS 1
- * 2 = SSB ADDRESS +6: STATUS 2
- */
-
- /* Check if this interrupt does use the SSB. */
-
- if(IrqType != STS_IRQ_TRANSMIT_STATUS
- && IrqType != STS_IRQ_RECEIVE_STATUS
- && IrqType != STS_IRQ_COMMAND_STATUS
- && IrqType != STS_IRQ_RING_STATUS)
- {
- return (1); /* SSB not involved. */
- }
-
- /* Note: All fields of the SSB have been set to all ones (-1) after it
- * has last been used by the software (see DriverIsr()).
- *
- * Check if the affected SSB fields are still unchanged.
- */
-
- if(ssb->STS == (unsigned short) -1)
- return (0); /* Command field not yet available. */
- if(IrqType == STS_IRQ_COMMAND_STATUS)
- return (1); /* Status fields not always affected. */
- if(ssb->Parm[0] == (unsigned short) -1)
- return (0); /* Status 1 field not yet available. */
- if(IrqType == STS_IRQ_RING_STATUS)
- return (1); /* Status 2 & 3 fields not affected. */
-
- /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
- if(ssb->Parm[1] == (unsigned short) -1)
- return (0); /* Status 2 field not yet available. */
- if(ssb->Parm[2] == (unsigned short) -1)
- return (0); /* Status 3 field not yet available. */
-
- return (1); /* All SSB fields have been written by the adapter. */
-}
-
-/*
- * Evaluates the command results status in the SSB status field.
- */
-static void sktr_cmd_status_irq(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned short ssb_cmd, ssb_parm_0;
- unsigned short ssb_parm_1;
- char *open_err = "Open error -";
- char *code_err = "Open code -";
-
- /* Copy the ssb values to local variables */
- ssb_cmd = tp->ssb.STS;
- ssb_parm_0 = tp->ssb.Parm[0];
- ssb_parm_1 = tp->ssb.Parm[1];
-
- if(ssb_cmd == OPEN)
- {
- tp->Sleeping = 0;
- if(!tp->ReOpenInProgress)
- wake_up_interruptible(&tp->wait_for_tok_int);
-
- tp->OpenCommandIssued = 0;
- tp->ScbInUse = 0;
-
- if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
- {
- /* Success, the adapter is open. */
- tp->LobeWireFaultLogged = 0;
- tp->AdapterOpenFlag = 1;
- tp->AdapterVirtOpenFlag = 1;
- tp->TransmitCommandActive = 0;
- sktr_exec_cmd(dev, OC_TRANSMIT);
- sktr_exec_cmd(dev, OC_RECEIVE);
-
- if(tp->ReOpenInProgress)
- tp->ReOpenInProgress = 0;
-
- return;
- }
- else /* The adapter did not open. */
- {
- if(ssb_parm_0 & NODE_ADDR_ERROR)
- printk(KERN_INFO "%s: Node address error\n",
- dev->name);
- if(ssb_parm_0 & LIST_SIZE_ERROR)
- printk(KERN_INFO "%s: List size error\n",
- dev->name);
- if(ssb_parm_0 & BUF_SIZE_ERROR)
- printk(KERN_INFO "%s: Buffer size error\n",
- dev->name);
- if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
- printk(KERN_INFO "%s: Tx buffer count error\n",
- dev->name);
- if(ssb_parm_0 & INVALID_OPEN_OPTION)
- printk(KERN_INFO "%s: Invalid open option\n",
- dev->name);
- if(ssb_parm_0 & OPEN_ERROR)
- {
- /* Show the open phase. */
- switch(ssb_parm_0 & OPEN_PHASES_MASK)
- {
- case LOBE_MEDIA_TEST:
- if(!tp->LobeWireFaultLogged)
- {
- tp->LobeWireFaultLogged = 1;
- printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
- }
- tp->ReOpenInProgress = 1;
- tp->AdapterOpenFlag = 0;
- tp->AdapterVirtOpenFlag = 1;
- sktr_open_adapter(dev);
- return;
-
- case PHYSICAL_INSERTION:
- printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
- break;
-
- case ADDRESS_VERIFICATION:
- printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
- break;
-
- case PARTICIPATION_IN_RING_POLL:
- printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
- break;
-
- case REQUEST_INITIALISATION:
- printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
- break;
-
- case FULLDUPLEX_CHECK:
- printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
- break;
-
- default:
- printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
- break;
- }
-
- /* Show the open errors. */
- switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
- {
- case OPEN_FUNCTION_FAILURE:
- printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_FUNCTION_FAILURE;
- break;
-
- case OPEN_SIGNAL_LOSS:
- printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_SIGNAL_LOSS;
- break;
-
- case OPEN_TIMEOUT:
- printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_TIMEOUT;
- break;
-
- case OPEN_RING_FAILURE:
- printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_RING_FAILURE;
- break;
-
- case OPEN_RING_BEACONING:
- printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_RING_BEACONING;
- break;
-
- case OPEN_DUPLICATE_NODEADDR:
- printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_DUPLICATE_NODEADDR;
- break;
-
- case OPEN_REQUEST_INIT:
- printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_REQUEST_INIT;
- break;
-
- case OPEN_REMOVE_RECEIVED:
- printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_REMOVE_RECEIVED;
- break;
-
- case OPEN_FULLDUPLEX_SET:
- printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_FULLDUPLEX_SET;
- break;
-
- default:
- printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
- tp->LastOpenStatus =
- OPEN_FUNCTION_FAILURE;
- break;
- }
- }
-
- tp->AdapterOpenFlag = 0;
- tp->AdapterVirtOpenFlag = 0;
-
- return;
- }
- }
- else
- {
- if(ssb_cmd != READ_ERROR_LOG)
- return;
-
- /* Add values from the error log table to the MAC
- * statistics counters and update the errorlogtable
- * memory.
- */
- tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
- tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
- tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
- tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
- tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
- tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
- tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
- tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
- tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
- tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
- tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
- tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
- tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
- }
-
- return;
-}
-
-/*
- * The inverse routine to sktr_open().
- */
-static int sktr_close(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- dev->tbusy = 1;
- dev->start = 0;
-
- del_timer(&tp->timer);
-
- /* Flush the Tx and disable Rx here. */
-
- tp->HaltInProgress = 1;
- sktr_exec_cmd(dev, OC_CLOSE);
- tp->timer.expires = jiffies + 1*HZ;
- tp->timer.function = sktr_timer_end_wait;
- tp->timer.data = (unsigned long)dev;
- add_timer(&tp->timer);
-
- sktr_enable_interrupts(dev);
-
- tp->Sleeping = 1;
- interruptible_sleep_on(&tp->wait_for_tok_int);
- tp->TransmitCommandActive = 0;
-
- del_timer(&tp->timer);
- sktr_disable_interrupts(dev);
-
- if(dev->dma > 0)
- {
- unsigned long flags=claim_dma_lock();
- disable_dma(dev->dma);
- release_dma_lock(flags);
- }
-
- outw(0xFF00, dev->base_addr + SIFCMD);
- if(dev->dma > 0)
- outb(0xff, dev->base_addr + POSREG);
-
-#ifdef MODULE
- MOD_DEC_USE_COUNT;
-#endif
-
- sktr_cancel_tx_queue(tp);
-
- return (0);
-}
-
-/*
- * Get the current statistics. This may be called with the card open
- * or closed.
- */
-static struct enet_statistics *sktr_get_stats(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- return ((struct enet_statistics *)&tp->MacStat);
-}
-
-/*
- * Set or clear the multicast filter for this adapter.
- */
-static void sktr_set_multicast_list(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned int OpenOptions;
-
- OpenOptions = tp->ocpl.OPENOptions &
- ~(PASS_ADAPTER_MAC_FRAMES
- | PASS_ATTENTION_FRAMES
- | PASS_BEACON_MAC_FRAMES
- | COPY_ALL_MAC_FRAMES
- | COPY_ALL_NON_MAC_FRAMES);
-
- tp->ocpl.FunctAddr = 0;
-
- if(dev->flags & IFF_PROMISC)
- /* Enable promiscuous mode */
- OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
- COPY_ALL_MAC_FRAMES;
- else
- {
- if(dev->flags & IFF_ALLMULTI)
- {
- /* Disable promiscuous mode, use normal mode. */
- tp->ocpl.FunctAddr = 0xFFFFFFFF;
-
- }
- else
- {
- int i;
- struct dev_mc_list *mclist = dev->mc_list;
- for (i=0; i< dev->mc_count; i++)
- {
- ((char *)(&tp->ocpl.FunctAddr))[0] |=
- mclist->dmi_addr[2];
- ((char *)(&tp->ocpl.FunctAddr))[1] |=
- mclist->dmi_addr[3];
- ((char *)(&tp->ocpl.FunctAddr))[2] |=
- mclist->dmi_addr[4];
- ((char *)(&tp->ocpl.FunctAddr))[3] |=
- mclist->dmi_addr[5];
- mclist = mclist->next;
- }
- }
- sktr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
- }
-
- tp->ocpl.OPENOptions = OpenOptions;
- sktr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
- return;
-}
-
-/*
- * Wait for some time (microseconds)
- *
- * udelay() is a bit harsh, but using a looser timer causes
- * the bring-up-diags to stall indefinitly.
- *
- */
-
-static void sktr_wait(unsigned long time)
-{
- udelay(time);
- return;
-}
-
-/*
- * Write a command value to the SIFCMD register
- */
-static void sktr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
-{
- int ioaddr = dev->base_addr;
- unsigned short cmd;
- unsigned short SifStsValue;
- unsigned long loop_counter;
-
- WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
- cmd = (unsigned short)WriteValue;
- loop_counter = 0,5 * 800000;
- do {
- SifStsValue = inw(ioaddr + SIFSTS);
- } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
- outw(cmd, ioaddr + SIFCMD);
-
- return;
-}
-
-/*
- * Processes adapter hardware reset, halts adapter and downloads firmware,
- * clears the halt bit.
- */
-static int sktr_reset_adapter(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned short *fw_ptr = (unsigned short *)&sktr_code;
- unsigned short count, c;
- int ioaddr = dev->base_addr;
-
- /* Hardware adapter reset */
- outw(ACL_ARESET, ioaddr + SIFACL);
- sktr_wait(40);
-
- c = inw(ioaddr + SIFACL);
- sktr_wait(20);
-
- if(dev->dma == 0) /* For PCI adapters */
- {
- c &= ~(ACL_SPEED4 | ACL_SPEED16); /* Clear bits */
- if(tp->DataRate == SPEED_4)
- c |= ACL_SPEED4; /* Set 4Mbps */
- else
- c |= ACL_SPEED16; /* Set 16Mbps */
- }
-
- /* In case a command is pending - forget it */
- tp->ScbInUse = 0;
-
- c &= ~ACL_ARESET; /* Clear adapter reset bit */
- c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
- c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
- outw(c, ioaddr + SIFACL);
- sktr_wait(40);
-
- /* Download firmware via DIO interface: */
- do {
- /* Download first address part */
- outw(*fw_ptr, ioaddr + SIFADX);
- fw_ptr++;
-
- /* Download second address part */
- outw(*fw_ptr, ioaddr + SIFADD);
- fw_ptr++;
-
- if((count = *fw_ptr) != 0) /* Load loop counter */
- {
- fw_ptr++; /* Download block data */
- for(; count > 0; count--)
- {
- outw(*fw_ptr, ioaddr + SIFINC);
- fw_ptr++;
- }
- }
- else /* Stop, if last block downloaded */
- {
- c = inw(ioaddr + SIFACL);
- c &= (~ACL_CPHALT | ACL_SINTEN);
-
- /* Clear CPHALT and start BUD */
- outw(c, ioaddr + SIFACL);
- return (1);
- }
- } while(count == 0);
-
- return (-1);
-}
-
-/*
- * Starts bring up diagnostics of token ring adapter and evaluates
- * diagnostic results.
- */
-static int sktr_bringup_diags(struct net_device *dev)
-{
- int loop_cnt, retry_cnt;
- unsigned short Status;
- int ioaddr = dev->base_addr;
-
- sktr_wait(HALF_SECOND);
- sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
- sktr_wait(HALF_SECOND);
-
- retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
-
- do {
- retry_cnt--;
- if(sktr_debug > 3)
- printk(KERN_INFO "BUD-Status: \n");
- loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
- do { /* Inspect BUD results */
- loop_cnt--;
- sktr_wait(HALF_SECOND);
- Status = inw(ioaddr + SIFSTS);
- Status &= STS_MASK;
-
- if(sktr_debug > 3)
- printk(KERN_INFO " %04X \n", Status);
- /* BUD successfully completed */
- if(Status == STS_INITIALIZE)
- return (1);
- /* Unrecoverable hardware error, BUD not completed? */
- } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
- != (STS_ERROR | STS_TEST)));
-
- /* Error preventing completion of BUD */
- if(retry_cnt > 0)
- {
- printk(KERN_INFO "%s: Adapter Software Reset.\n",
- dev->name);
- sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
- sktr_wait(HALF_SECOND);
- }
- } while(retry_cnt > 0);
-
- Status = inw(ioaddr + SIFSTS);
- Status &= STS_ERROR_MASK; /* Hardware error occurred! */
-
- printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n",
- dev->name, Status);
-
- return (-1);
-}
-
-/*
- * Copy initialisation data to adapter memory, beginning at address
- * 1:0A00; Starting DMA test and evaluating result bits.
- */
-static int sktr_init_adapter(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
- const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
- 0xC5, 0xD9, 0xC3, 0xD4};
- void *ptr = (void *)&tp->ipb;
- unsigned short *ipb_ptr = (unsigned short *)ptr;
- unsigned char *cb_ptr = (unsigned char *) &tp->scb;
- unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
- unsigned short Status;
- int i, loop_cnt, retry_cnt;
- int ioaddr = dev->base_addr;
-
- /* Normalize: byte order low/high, word order high/low! (only IPB!) */
- tp->ipb.SCB_Addr = SWAPW(virt_to_bus(&tp->scb));
- tp->ipb.SSB_Addr = SWAPW(virt_to_bus(&tp->ssb));
-
- /* Maximum: three initialization retries */
- retry_cnt = INIT_MAX_RETRIES;
-
- do {
- retry_cnt--;
-
- /* Transfer initialization block */
- outw(0x0001, ioaddr + SIFADX);
-
- /* To address 0001:0A00 of adapter RAM */
- outw(0x0A00, ioaddr + SIFADD);
-
- /* Write 11 words to adapter RAM */
- for(i = 0; i < 11; i++)
- outw(ipb_ptr[i], ioaddr + SIFINC);
-
- /* Execute SCB adapter command */
- sktr_exec_sifcmd(dev, CMD_EXECUTE);
-
- loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
-
- /* While remaining retries, no error and not completed */
- do {
- Status = 0;
- loop_cnt--;
- sktr_wait(HALF_SECOND);
-
- /* Mask interesting status bits */
- Status = inw(ioaddr + SIFSTS);
- Status &= STS_MASK;
- } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
- && ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
-
- if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
- {
- /* Initialization completed without error */
- i = 0;
- do { /* Test if contents of SCB is valid */
- if(SCB_Test[i] != *(cb_ptr + i))
- /* DMA data error: wrong data in SCB */
- return (-1);
- i++;
- } while(i < 6);
-
- i = 0;
- do { /* Test if contents of SSB is valid */
- if(SSB_Test[i] != *(sb_ptr + i))
- /* DMA data error: wrong data in SSB */
- return (-1);
- i++;
- } while (i < 8);
-
- return (1); /* Adapter successfully initialized */
- }
- else
- {
- if((Status & STS_ERROR) != 0)
- {
- /* Initialization error occurred */
- Status = inw(ioaddr + SIFSTS);
- Status &= STS_ERROR_MASK;
- /* ShowInitialisationErrorCode(Status); */
- return (-1); /* Unrecoverable error */
- }
- else
- {
- if(retry_cnt > 0)
- {
- /* Reset adapter and try init again */
- sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
- sktr_wait(HALF_SECOND);
- }
- }
- }
- } while(retry_cnt > 0);
-
- return (-1);
-}
-
-/*
- * Check for outstanding commands in command queue and tries to execute
- * command immediately. Corresponding command flag in command queue is cleared.
- */
-static void sktr_chk_outstanding_cmds(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned long Addr = 0;
- unsigned char i = 0;
-
- if(tp->CMDqueue == 0)
- return; /* No command execution */
-
- /* If SCB in use: no command */
- if(tp->ScbInUse == 1)
- return;
-
- /* Check if adapter is opened, avoiding COMMAND_REJECT
- * interrupt by the adapter!
- */
- if(tp->AdapterOpenFlag == 0)
- {
- if(tp->CMDqueue & OC_OPEN)
- {
- /* Execute OPEN command */
- tp->CMDqueue ^= OC_OPEN;
-
- /* Copy the 18 bytes of the product ID */
- while((AdapterName[i] != '\0') && (i < PROD_ID_SIZE))
- {
- tp->ProductID[i] = AdapterName[i];
- i++;
- }
-
- Addr = htonl(virt_to_bus(&tp->ocpl));
- tp->scb.Parm[0] = LOWORD(Addr);
- tp->scb.Parm[1] = HIWORD(Addr);
- tp->scb.CMD = OPEN;
- }
- else
- /* No OPEN command queued, but adapter closed. Note:
- * We'll try to re-open the adapter in DriverPoll()
- */
- return; /* No adapter command issued */
- }
- else
- {
- /* Adapter is open; evaluate command queue: try to execute
- * outstanding commands (depending on priority!) CLOSE
- * command queued
- */
- if(tp->CMDqueue & OC_CLOSE)
- {
- tp->CMDqueue ^= OC_CLOSE;
- tp->AdapterOpenFlag = 0;
- tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
- tp->scb.Parm[1] = 0; /* but should be set to zero! */
- tp->scb.CMD = CLOSE;
- if(!tp->HaltInProgress)
- tp->CMDqueue |= OC_OPEN; /* re-open adapter */
- else
- tp->CMDqueue = 0; /* no more commands */
- }
- else
- {
- if(tp->CMDqueue & OC_RECEIVE)
- {
- tp->CMDqueue ^= OC_RECEIVE;
- Addr = htonl(virt_to_bus(tp->RplHead));
- tp->scb.Parm[0] = LOWORD(Addr);
- tp->scb.Parm[1] = HIWORD(Addr);
- tp->scb.CMD = RECEIVE;
- }
- else
- {
- if(tp->CMDqueue & OC_TRANSMIT_HALT)
- {
- /* NOTE: TRANSMIT.HALT must be checked
- * before TRANSMIT.
- */
- tp->CMDqueue ^= OC_TRANSMIT_HALT;
- tp->scb.CMD = TRANSMIT_HALT;
-
- /* Parm[0] and Parm[1] are ignored
- * but should be set to zero!
- */
- tp->scb.Parm[0] = 0;
- tp->scb.Parm[1] = 0;
- }
- else
- {
- if(tp->CMDqueue & OC_TRANSMIT)
- {
- /* NOTE: TRANSMIT must be
- * checked after TRANSMIT.HALT
- */
- if(tp->TransmitCommandActive)
- {
- if(!tp->TransmitHaltScheduled)
- {
- tp->TransmitHaltScheduled = 1;
- sktr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
- }
- tp->TransmitCommandActive = 0;
- return;
- }
-
- tp->CMDqueue ^= OC_TRANSMIT;
- sktr_cancel_tx_queue(tp);
- Addr = htonl(virt_to_bus(tp->TplBusy));
- tp->scb.Parm[0] = LOWORD(Addr);
- tp->scb.Parm[1] = HIWORD(Addr);
- tp->scb.CMD = TRANSMIT;
- tp->TransmitCommandActive = 1;
- }
- else
- {
- if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
- {
- tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
- tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
- tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
- tp->scb.Parm[1] = 0; /* is ignored but should be zero */
- tp->scb.CMD = MODIFY_OPEN_PARMS;
- }
- else
- {
- if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
- {
- tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
- tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
- tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
- tp->scb.CMD = SET_FUNCT_ADDR;
- }
- else
- {
- if(tp->CMDqueue & OC_SET_GROUP_ADDR)
- {
- tp->CMDqueue ^= OC_SET_GROUP_ADDR;
- tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
- tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
- tp->scb.CMD = SET_GROUP_ADDR;
- }
- else
- {
- if(tp->CMDqueue & OC_READ_ERROR_LOG)
- {
- tp->CMDqueue ^= OC_READ_ERROR_LOG;
- Addr = htonl(virt_to_bus(&tp->errorlogtable));
- tp->scb.Parm[0] = LOWORD(Addr);
- tp->scb.Parm[1] = HIWORD(Addr);
- tp->scb.CMD = READ_ERROR_LOG;
- }
- else
- {
- printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
- tp->CMDqueue = 0;
- return;
- }
- }
- }
- }
- }
- }
- }
- }
- }
-
- tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
-
- /* Execute SCB and generate IRQ when done. */
- sktr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
-
- return;
-}
-
-/*
- * IRQ conditions: signal loss on the ring, transmit or receive of beacon
- * frames (disabled if bit 1 of OPEN option is set); report error MAC
- * frame transmit (disabled if bit 2 of OPEN option is set); open or short
- * cirquit fault on the lobe is detected; remove MAC frame received;
- * error counter overflow (255); opened adapter is the only station in ring.
- * After some of the IRQs the adapter is closed!
- */
-static void sktr_ring_status_irq(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
-
- tp->CurrentRingStatus = SWAPB(tp->ssb.Parm[0]);
-
- /* First: fill up statistics */
- if(tp->ssb.Parm[0] & SIGNAL_LOSS)
- {
- printk(KERN_INFO "%s: Signal Loss\n", dev->name);
- tp->MacStat.line_errors++;
- }
-
- /* Adapter is closed, but initialized */
- if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
- {
- printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
- dev->name);
- tp->MacStat.line_errors++;
- }
-
- if(tp->ssb.Parm[0] & RING_RECOVERY)
- printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
-
- /* Counter overflow: read error log */
- if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
- {
- printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
- sktr_exec_cmd(dev, OC_READ_ERROR_LOG);
- }
-
- /* Adapter is closed, but initialized */
- if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
- printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
- dev->name);
-
- /* Adapter is closed, but initialized */
- if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
- printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
- dev->name);
-
- if(tp->ssb.Parm[0] & HARD_ERROR)
- printk(KERN_INFO "%s: Hard Error\n", dev->name);
-
- if(tp->ssb.Parm[0] & SOFT_ERROR)
- printk(KERN_INFO "%s: Soft Error\n", dev->name);
-
- if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
- printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
-
- if(tp->ssb.Parm[0] & SINGLE_STATION)
- printk(KERN_INFO "%s: Single Station\n", dev->name);
-
- /* Check if adapter has been closed */
- if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
- {
- printk(KERN_INFO "%s: Adapter closed (Reopening),"
- "QueueSkb %d, CurrentRingStat %x\n",
- dev->name, tp->QueueSkb, tp->CurrentRingStatus);
- tp->AdapterOpenFlag = 0;
- sktr_open_adapter(dev);
- }
-
- return;
-}
-
-/*
- * Issued if adapter has encountered an unrecoverable hardware
- * or software error.
- */
-static void sktr_chk_irq(struct net_device *dev)
-{
- int i;
- unsigned short AdapterCheckBlock[4];
- unsigned short ioaddr = dev->base_addr;
- struct net_local *tp = (struct net_local *)dev->priv;
-
- tp->AdapterOpenFlag = 0; /* Adapter closed now */
-
- /* Page number of adapter memory */
- outw(0x0001, ioaddr + SIFADX);
- /* Address offset */
- outw(CHECKADDR, ioaddr + SIFADR);
-
- /* Reading 8 byte adapter check block. */
- for(i = 0; i < 4; i++)
- AdapterCheckBlock[i] = inw(ioaddr + SIFINC);
-
- if(sktr_debug > 3)
- {
- printk("%s: AdapterCheckBlock: ", dev->name);
- for (i = 0; i < 4; i++)
- printk("%04X", AdapterCheckBlock[i]);
- printk("\n");
- }
-
- switch(AdapterCheckBlock[0])
- {
- case DIO_PARITY:
- printk(KERN_INFO "%s: DIO parity error\n", dev->name);
- break;
-
- case DMA_READ_ABORT:
- printk(KERN_INFO "%s DMA read operation aborted:\n",
- dev->name);
- switch (AdapterCheckBlock[1])
- {
- case 0:
- printk(KERN_INFO "Timeout\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- case 1:
- printk(KERN_INFO "Parity error\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- case 2:
- printk(KERN_INFO "Bus error\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- default:
- printk(KERN_INFO "Unknown error.\n");
- break;
- }
- break;
-
- case DMA_WRITE_ABORT:
- printk(KERN_INFO "%s: DMA write operation aborted: \n",
- dev->name);
- switch (AdapterCheckBlock[1])
- {
- case 0:
- printk(KERN_INFO "Timeout\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- case 1:
- printk(KERN_INFO "Parity error\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- case 2:
- printk(KERN_INFO "Bus error\n");
- printk(KERN_INFO "Address: %04X %04X\n",
- AdapterCheckBlock[2],
- AdapterCheckBlock[3]);
- break;
-
- default:
- printk(KERN_INFO "Unknown error.\n");
- break;
- }
- break;
-
- case ILLEGAL_OP_CODE:
- printk("%s: Illegal operation code in firmware\n",
- dev->name);
- /* Parm[0-3]: adapter internal register R13-R15 */
- break;
-
- case PARITY_ERRORS:
- printk("%s: Adapter internal bus parity error\n",
- dev->name);
- /* Parm[0-3]: adapter internal register R13-R15 */
- break;
-
- case RAM_DATA_ERROR:
- printk("%s: RAM data error\n", dev->name);
- /* Parm[0-1]: MSW/LSW address of RAM location. */
- break;
-
- case RAM_PARITY_ERROR:
- printk("%s: RAM parity error\n", dev->name);
- /* Parm[0-1]: MSW/LSW address of RAM location. */
- break;
-
- case RING_UNDERRUN:
- printk("%s: Internal DMA underrun detected\n",
- dev->name);
- break;
-
- case INVALID_IRQ:
- printk("%s: Unrecognized interrupt detected\n",
- dev->name);
- /* Parm[0-3]: adapter internal register R13-R15 */
- break;
-
- case INVALID_ERROR_IRQ:
- printk("%s: Unrecognized error interrupt detected\n",
- dev->name);
- /* Parm[0-3]: adapter internal register R13-R15 */
- break;
-
- case INVALID_XOP:
- printk("%s: Unrecognized XOP request detected\n",
- dev->name);
- /* Parm[0-3]: adapter internal register R13-R15 */
- break;
-
- default:
- printk("%s: Unknown status", dev->name);
- break;
- }
-
- if(sktr_chipset_init(dev) == 1)
- {
- /* Restart of firmware successful */
- tp->AdapterOpenFlag = 1;
- }
-
- return;
-}
-
-/*
- * Internal adapter pointer to RAM data are copied from adapter into
- * host system.
- */
-static void sktr_read_ptr(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned short adapterram;
-
- sktr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
- ADAPTER_INT_PTRS, 16);
- sktr_read_ram(dev, (unsigned char *)&adapterram,
- (unsigned short)SWAPB(tp->intptrs.AdapterRAMPtr), 2);
-
- printk(KERN_INFO "%s: Adapter RAM size: %d K\n",
- dev->name, SWAPB(adapterram));
-
- return;
-}
-
-/*
- * Reads a number of bytes from adapter to system memory.
- */
-static void sktr_read_ram(struct net_device *dev, unsigned char *Data,
- unsigned short Address, int Length)
-{
- int i;
- unsigned short old_sifadx, old_sifadr, InWord;
- unsigned short ioaddr = dev->base_addr;
-
- /* Save the current values */
- old_sifadx = inw(ioaddr + SIFADX);
- old_sifadr = inw(ioaddr + SIFADR);
-
- /* Page number of adapter memory */
- outw(0x0001, ioaddr + SIFADX);
- /* Address offset in adapter RAM */
- outw(Address, ioaddr + SIFADR);
-
- /* Copy len byte from adapter memory to system data area. */
- i = 0;
- for(;;)
- {
- InWord = inw(ioaddr + SIFINC);
-
- *(Data + i) = HIBYTE(InWord); /* Write first byte */
- if(++i == Length) /* All is done break */
- break;
-
- *(Data + i) = LOBYTE(InWord); /* Write second byte */
- if (++i == Length) /* All is done break */
- break;
- }
-
- /* Restore original values */
- outw(old_sifadx, ioaddr + SIFADX);
- outw(old_sifadr, ioaddr + SIFADR);
-
- return;
-}
-
-/*
- * Reads MAC address from adapter ROM.
- */
-static void sktr_read_addr(struct net_device *dev, unsigned char *Address)
-{
- int i, In;
- unsigned short ioaddr = dev->base_addr;
-
- /* Address: 0000:0000 */
- outw(0, ioaddr + SIFADX);
- outw(0, ioaddr + SIFADR);
-
- /* Read six byte MAC address data */
- for(i = 0; i < 6; i++)
- {
- In = inw(ioaddr + SIFINC);
- *(Address + i) = (unsigned char)(In >> 8);
- }
-
- return;
-}
-
-/*
- * Cancel all queued packets in the transmission queue.
- */
-static void sktr_cancel_tx_queue(struct net_local* tp)
-{
- TPL *tpl;
- struct sk_buff *skb;
-
- /*
- * NOTE: There must not be an active TRANSMIT command pending, when
- * this function is called.
- */
- if(tp->TransmitCommandActive)
- return;
-
- for(;;)
- {
- tpl = tp->TplBusy;
- if(!tpl->BusyFlag)
- break;
- /* "Remove" TPL from busy list. */
- tp->TplBusy = tpl->NextTPLPtr;
- sktr_write_tpl_status(tpl, 0); /* Clear VALID bit */
- tpl->BusyFlag = 0; /* "free" TPL */
-
- printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
-
- dev_kfree_skb(tpl->Skb);
- }
-
- for(;;)
- {
- skb = skb_dequeue(&tp->SendSkbQueue);
- if(skb == NULL)
- break;
- tp->QueueSkb++;
- dev_kfree_skb(skb);
- }
-
- return;
-}
-
-/*
- * This function is called whenever a transmit interrupt is generated by the
- * adapter. For a command complete interrupt, it is checked if we have to
- * issue a new transmit command or not.
- */
-static void sktr_tx_status_irq(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned char HighByte, HighAc, LowAc;
- TPL *tpl;
-
- /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
- * available, because the CLEAR SSB command has already been issued.
- *
- * Process all complete transmissions.
- */
-
- for(;;)
- {
- tpl = tp->TplBusy;
- if(!tpl->BusyFlag || (tpl->Status
- & (TX_VALID | TX_FRAME_COMPLETE))
- != TX_FRAME_COMPLETE)
- {
- break;
- }
-
- /* "Remove" TPL from busy list. */
- tp->TplBusy = tpl->NextTPLPtr ;
-
- if(sktr_debug > 3)
- sktr_dump(tpl->MData, SWAPB(tpl->FrameSize));
-
- /* Check the transmit status field only for directed frames*/
- if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
- {
- HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
- HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
- LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
-
- if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
- {
- printk(KERN_INFO "%s: (DA=%08lX not recognized)",
- dev->name,
- *(unsigned long *)&tpl->MData[2+2]);
- }
- else
- {
- if(sktr_debug > 3)
- printk("%s: Directed frame tx'd\n",
- dev->name);
- }
- }
- else
- {
- if(!DIRECTED_FRAME(tpl))
- {
- if(sktr_debug > 3)
- printk("%s: Broadcast frame tx'd\n",
- dev->name);
- }
- }
-
- tp->MacStat.tx_packets++;
- dev_kfree_skb(tpl->Skb);
- tpl->BusyFlag = 0; /* "free" TPL */
- }
-
- dev->tbusy = 0;
- if(tp->QueueSkb < MAX_TX_QUEUE)
- sktr_hardware_send_packet(dev, tp);
-
- return;
-}
-
-/*
- * Called if a frame receive interrupt is generated by the adapter.
- * Check if the frame is valid and indicate it to system.
- */
-static void sktr_rcv_status_irq(struct net_device *dev)
-{
- struct net_local *tp = (struct net_local *)dev->priv;
- unsigned char *ReceiveDataPtr;
- struct sk_buff *skb;
- unsigned int Length, Length2;
- RPL *rpl;
- RPL *SaveHead;
-
- /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
- * available, because the CLEAR SSB command has already been issued.
- *
- * Process all complete receives.
- */
-
- for(;;)
- {
- rpl = tp->RplHead;
- if(rpl->Status & RX_VALID)
- break; /* RPL still in use by adapter */
-
- /* Forward RPLHead pointer to next list. */
- SaveHead = tp->RplHead;
- tp->RplHead = rpl->NextRPLPtr;
-
- /* Get the frame size (Byte swap for Intel).
- * Do this early (see workaround comment below)
- */
- Length = (unsigned short)SWAPB(rpl->FrameSize);
-
- /* Check if the Frame_Start, Frame_End and
- * Frame_Complete bits are set.
- */
- if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
- == VALID_SINGLE_BUFFER_FRAME)
- {
- ReceiveDataPtr = rpl->MData;
-
- /* Workaround for delayed write of FrameSize on ISA
- * (FrameSize is false but valid-bit is reset)
- * Frame size is set to zero when the RPL is freed.
- * Length2 is there because there have also been
- * cases where the FrameSize was partially written
- */
- Length2 = (unsigned short)SWAPB(rpl->FrameSize);
-
- if(Length == 0 || Length != Length2)
- {
- tp->RplHead = SaveHead;
- break; /* Return to sktr_interrupt */
- }
-
- /* Drop frames sent by myself */
- if(sktr_chk_frame(dev, rpl->MData))
- {
- if(rpl->Skb != NULL)
- dev_kfree_skb(rpl->Skb);
- }
- else
- {
- sktr_update_rcv_stats(tp,ReceiveDataPtr,Length);
-
- if(sktr_debug > 3)
- printk("%s: Packet Length %04X (%d)\n",
- dev->name, Length, Length);
-
- /* Indicate the received frame to system.
- * The source routing padding is no more
- * necessary with 2.2.x kernel.
- * See: OpenOptions in sktr_init_opb()
- */
- skb = rpl->Skb;
- if(rpl->SkbStat == SKB_UNAVAILABLE)
- {
- /* Try again to allocate skb */
- skb = dev_alloc_skb(tp->MaxPacketSize);
- if(skb == NULL)
- {
- /* Update Stats ?? */
- }
- else
- {
- skb->dev = dev;
- skb_put(skb, tp->MaxPacketSize);
- rpl->SkbStat = SKB_DATA_COPY;
- ReceiveDataPtr = rpl->MData;
- }
- }
-
- if(rpl->SkbStat == SKB_DATA_COPY
- || rpl->SkbStat == SKB_DMA_DIRECT)
- {
- if(rpl->SkbStat == SKB_DATA_COPY)
- {
- memmove(skb->data, ReceiveDataPtr, Length);
- }
-
- /* Deliver frame to system */
- rpl->Skb = NULL;
- skb_trim(skb,Length);
- skb->dev = dev;
- skb->protocol = tr_type_trans(skb,dev);
- netif_rx(skb);
- }
- }
- }
- else /* Invalid frame */
- {
- if(rpl->Skb != NULL)
- dev_kfree_skb(rpl->Skb);
-
- /* Skip list. */
- if(rpl->Status & RX_START_FRAME)
- /* Frame start bit is set -> overflow. */
- tp->MacStat.rx_errors++;
- }
-
- /* Allocate new skb for rpl */
- rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
-
- /* skb == NULL ? then use local buffer */
- if(rpl->Skb == NULL)
- {
- rpl->SkbStat = SKB_UNAVAILABLE;
- rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
- rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
- }
- else /* skb != NULL */
- {
- rpl->Skb->dev = dev;
- skb_put(rpl->Skb, tp->MaxPacketSize);
-
- /* Data unreachable for DMA ? then use local buffer */
- if(tp->DeviceType == SK_ISA &&
- virt_to_bus(rpl->Skb->data) + tp->MaxPacketSize
- > ISA_MAX_ADDRESS)
- {
- rpl->SkbStat = SKB_DATA_COPY;
- rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
- rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
- }
- else
- {
- /* DMA directly in skb->data */
- rpl->SkbStat = SKB_DMA_DIRECT;
- rpl->FragList[0].DataAddr = htonl(virt_to_bus(rpl->Skb->data));
- rpl->MData = rpl->Skb->data;
- }
- }
-
- rpl->FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
- rpl->FrameSize = 0;
-
- /* Pass the last RPL back to the adapter */
- tp->RplTail->FrameSize = 0;
-
- /* Reset the CSTAT field in the list. */
- sktr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
-
- /* Current RPL becomes last one in list. */
- tp->RplTail = tp->RplTail->NextRPLPtr;
-
- /* Inform adapter about RPL valid. */
- sktr_exec_sifcmd(dev, CMD_RX_VALID);
- }
-
- return;
-}
-
-/*
- * This function should be used whenever the status of any RPL must be
- * modified by the driver, because the compiler may otherwise change the
- * order of instructions such that writing the RPL status may be executed
- * at an undesireable time. When this function is used, the status is
- * always written when the function is called.
- */
-static void sktr_write_rpl_status(RPL *rpl, unsigned int Status)
-{
- rpl->Status = Status;
-
- return;
-}
-
-/*
- * The function updates the statistic counters in mac->MacStat.
- * It differtiates between directed and broadcast/multicast ( ==functional)
- * frames.
- */
-static void sktr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
- unsigned int Length)
-{
- tp->MacStat.rx_packets++;
-
- /* Test functional bit */
- if(DataPtr[2] & GROUP_BIT)
- tp->MacStat.multicast++;
-
- return;
-}
-
-/*
- * Check if it is a frame of myself. Compare source address with my current
- * address in reverse direction, and mask out the TR_RII.
- */
-static unsigned char sktr_chk_frame(struct net_device *dev, unsigned char *Addr)
-{
- int i;
-
- for(i = 5; i > 0; i--)
- {
- if(Addr[8 + i] != dev->dev_addr[i])
- return (0);
- }
-
- /* Mask out RIF bit. */
- if((Addr[8] & ~TR_RII) != (unsigned char)(dev->dev_addr[0]))
- return (0);
-
- return (1); /* It is my frame. */
-}
-
-/*
- * Dump Packet (data)
- */
-static void sktr_dump(unsigned char *Data, int length)
-{
- int i, j;
-
- for (i = 0, j = 0; i < length / 8; i++, j += 8)
- {
- printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
- Data[j+0],Data[j+1],Data[j+2],Data[j+3],
- Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
- }
-
- return;
-}
-
-#ifdef MODULE
-
-static struct net_device* dev_sktr[SKTR_MAX_ADAPTERS];
-static int io[SKTR_MAX_ADAPTERS] = { 0, 0 };
-static int irq[SKTR_MAX_ADAPTERS] = { 0, 0 };
-static int mem[SKTR_MAX_ADAPTERS] = { 0, 0 };
-
-MODULE_PARM(io, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-MODULE_PARM(irq, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-MODULE_PARM(mem, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-
-int init_module(void)
-{
- int i;
-
- for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
- {
- irq[i] = 0;
- mem[i] = 0;
- dev_sktr[i] = NULL;
- dev_sktr[i] = init_trdev(dev_sktr[i], 0);
- if(dev_sktr[i] == NULL)
- return (-ENOMEM);
-
- dev_sktr[i]->base_addr = io[i];
- dev_sktr[i]->irq = irq[i];
- dev_sktr[i]->mem_start = mem[i];
- dev_sktr[i]->init = &sktr_probe;
-
- if(register_trdev(dev_sktr[i]) != 0)
- {
- kfree_s(dev_sktr[i], sizeof(struct net_device));
- dev_sktr[i] = NULL;
- if(i == 0)
- {
- printk("sktr: register_trdev() returned non-zero.\n");
- return (-EIO);
- }
- else
- return (0);
- }
- }
-
- return (0);
-}
-
-void cleanup_module(void)
-{
- int i;
-
- for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
- {
- if(dev_sktr[i])
- {
- unregister_trdev(dev_sktr[i]);
- release_region(dev_sktr[i]->base_addr, SKTR_IO_EXTENT);
- if(dev_sktr[i]->irq)
- free_irq(dev_sktr[i]->irq, dev_sktr[i]);
- if(dev_sktr[i]->dma > 0)
- free_dma(dev_sktr[i]->dma);
- if(dev_sktr[i]->priv)
- kfree_s(dev_sktr[i]->priv, sizeof(struct net_local));
- kfree_s(dev_sktr[i], sizeof(struct net_device));
- dev_sktr[i] = NULL;
- }
- }
-}
-#endif /* MODULE */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)