| /* |
| * File Name: |
| * skfddi.c |
| * |
| * Copyright Information: |
| * Copyright SysKonnect 1998,1999. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * The information in this file is provided "AS IS" without warranty. |
| * |
| * Abstract: |
| * A Linux device driver supporting the SysKonnect FDDI PCI controller |
| * familie. |
| * |
| * Maintainers: |
| * CG Christoph Goos (cgoos@syskonnect.de) |
| * |
| * Contributors: |
| * DM David S. Miller |
| * |
| * Address all question to: |
| * linux@syskonnect.de |
| * |
| * The technical manual for the adapters is available from SysKonnect's |
| * web pages: www.syskonnect.com |
| * Goto "Support" and search Knowledge Base for "manual". |
| * |
| * Driver Architecture: |
| * The driver architecture is based on the DEC FDDI driver by |
| * Lawrence V. Stefani and several ethernet drivers. |
| * I also used an existing Windows NT miniport driver. |
| * All hardware dependent fuctions are handled by the SysKonnect |
| * Hardware Module. |
| * The only headerfiles that are directly related to this source |
| * are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h. |
| * The others belong to the SysKonnect FDDI Hardware Module and |
| * should better not be changed. |
| * |
| * Modification History: |
| * Date Name Description |
| * 02-Mar-98 CG Created. |
| * |
| * 10-Mar-99 CG Support for 2.2.x added. |
| * 25-Mar-99 CG Corrected IRQ routing for SMP (APIC) |
| * 26-Oct-99 CG Fixed compilation error on 2.2.13 |
| * 12-Nov-99 CG Source code release |
| * 22-Nov-99 CG Included in kernel source. |
| * 07-May-00 DM 64 bit fixes, new dma interface |
| * 31-Jul-03 DB Audit copy_*_user in skfp_ioctl |
| * Daniele Bellucci <bellucda@tiscali.it> |
| * 03-Dec-03 SH Convert to PCI device model |
| * |
| * Compilation options (-Dxxx): |
| * DRIVERDEBUG print lots of messages to log file |
| * DUMPPACKETS print received/transmitted packets to logfile |
| * |
| * Tested cpu architectures: |
| * - i386 |
| * - sparc64 |
| */ |
| |
| /* Version information string - should be updated prior to */ |
| /* each new release!!! */ |
| #define VERSION "2.07" |
| |
| static const char * const boot_msg = |
| "SysKonnect FDDI PCI Adapter driver v" VERSION " for\n" |
| " SK-55xx/SK-58xx adapters (SK-NET FDDI-FP/UP/LP)"; |
| |
| /* Include files */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/ioport.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| #include <linux/fddidevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/bitops.h> |
| |
| #include <asm/byteorder.h> |
| #include <asm/io.h> |
| #include <asm/uaccess.h> |
| |
| #include "h/types.h" |
| #undef ADDR // undo Linux definition |
| #include "h/skfbi.h" |
| #include "h/fddi.h" |
| #include "h/smc.h" |
| #include "h/smtstate.h" |
| |
| |
| // Define module-wide (static) routines |
| static int skfp_driver_init(struct net_device *dev); |
| static int skfp_open(struct net_device *dev); |
| static int skfp_close(struct net_device *dev); |
| static irqreturn_t skfp_interrupt(int irq, void *dev_id); |
| static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev); |
| static void skfp_ctl_set_multicast_list(struct net_device *dev); |
| static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev); |
| static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr); |
| static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev); |
| static void send_queued_packets(struct s_smc *smc); |
| static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr); |
| static void ResetAdapter(struct s_smc *smc); |
| |
| |
| // Functions needed by the hardware module |
| void *mac_drv_get_space(struct s_smc *smc, u_int size); |
| void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size); |
| unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt); |
| unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag); |
| void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, |
| int flag); |
| void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd); |
| void llc_restart_tx(struct s_smc *smc); |
| void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count, int len); |
| void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count); |
| void mac_drv_fill_rxd(struct s_smc *smc); |
| void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count); |
| int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead, |
| int la_len); |
| void dump_data(unsigned char *Data, int length); |
| |
| // External functions from the hardware module |
| extern u_int mac_drv_check_space(void); |
| extern void read_address(struct s_smc *smc, u_char * mac_addr); |
| extern void card_stop(struct s_smc *smc); |
| extern int mac_drv_init(struct s_smc *smc); |
| extern void hwm_tx_frag(struct s_smc *smc, char far * virt, u_long phys, |
| int len, int frame_status); |
| extern int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, |
| int frame_len, int frame_status); |
| extern int init_smt(struct s_smc *smc, u_char * mac_addr); |
| extern void fddi_isr(struct s_smc *smc); |
| extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys, |
| int len, int frame_status); |
| extern void mac_drv_rx_mode(struct s_smc *smc, int mode); |
| extern void mac_drv_clear_rx_queue(struct s_smc *smc); |
| extern void enable_tx_irq(struct s_smc *smc, u_short queue); |
| |
| static struct pci_device_id skfddi_pci_tbl[] = { |
| { PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, }, |
| { } /* Terminating entry */ |
| }; |
| MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>"); |
| |
| // Define module-wide (static) variables |
| |
| static int num_boards; /* total number of adapters configured */ |
| |
| #ifdef DRIVERDEBUG |
| #define PRINTK(s, args...) printk(s, ## args) |
| #else |
| #define PRINTK(s, args...) |
| #endif // DRIVERDEBUG |
| |
| /* |
| * ================= |
| * = skfp_init_one = |
| * ================= |
| * |
| * Overview: |
| * Probes for supported FDDI PCI controllers |
| * |
| * Returns: |
| * Condition code |
| * |
| * Arguments: |
| * pdev - pointer to PCI device information |
| * |
| * Functional Description: |
| * This is now called by PCI driver registration process |
| * for each board found. |
| * |
| * Return Codes: |
| * 0 - This device (fddi0, fddi1, etc) configured successfully |
| * -ENODEV - No devices present, or no SysKonnect FDDI PCI device |
| * present for this device name |
| * |
| * |
| * Side Effects: |
| * Device structures for FDDI adapters (fddi0, fddi1, etc) are |
| * initialized and the board resources are read and stored in |
| * the device structure. |
| */ |
| static int skfp_init_one(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct net_device *dev; |
| struct s_smc *smc; /* board pointer */ |
| void __iomem *mem; |
| int err; |
| |
| PRINTK(KERN_INFO "entering skfp_init_one\n"); |
| |
| if (num_boards == 0) |
| printk("%s\n", boot_msg); |
| |
| err = pci_enable_device(pdev); |
| if (err) |
| return err; |
| |
| err = pci_request_regions(pdev, "skfddi"); |
| if (err) |
| goto err_out1; |
| |
| pci_set_master(pdev); |
| |
| #ifdef MEM_MAPPED_IO |
| if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { |
| printk(KERN_ERR "skfp: region is not an MMIO resource\n"); |
| err = -EIO; |
| goto err_out2; |
| } |
| |
| mem = ioremap(pci_resource_start(pdev, 0), 0x4000); |
| #else |
| if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) { |
| printk(KERN_ERR "skfp: region is not PIO resource\n"); |
| err = -EIO; |
| goto err_out2; |
| } |
| |
| mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN); |
| #endif |
| if (!mem) { |
| printk(KERN_ERR "skfp: Unable to map register, " |
| "FDDI adapter will be disabled.\n"); |
| err = -EIO; |
| goto err_out2; |
| } |
| |
| dev = alloc_fddidev(sizeof(struct s_smc)); |
| if (!dev) { |
| printk(KERN_ERR "skfp: Unable to allocate fddi device, " |
| "FDDI adapter will be disabled.\n"); |
| err = -ENOMEM; |
| goto err_out3; |
| } |
| |
| dev->irq = pdev->irq; |
| dev->get_stats = &skfp_ctl_get_stats; |
| dev->open = &skfp_open; |
| dev->stop = &skfp_close; |
| dev->hard_start_xmit = &skfp_send_pkt; |
| dev->set_multicast_list = &skfp_ctl_set_multicast_list; |
| dev->set_mac_address = &skfp_ctl_set_mac_address; |
| dev->do_ioctl = &skfp_ioctl; |
| dev->header_cache_update = NULL; /* not supported */ |
| |
| SET_MODULE_OWNER(dev); |
| SET_NETDEV_DEV(dev, &pdev->dev); |
| |
| /* Initialize board structure with bus-specific info */ |
| smc = netdev_priv(dev); |
| smc->os.dev = dev; |
| smc->os.bus_type = SK_BUS_TYPE_PCI; |
| smc->os.pdev = *pdev; |
| smc->os.QueueSkb = MAX_TX_QUEUE_LEN; |
| smc->os.MaxFrameSize = MAX_FRAME_SIZE; |
| smc->os.dev = dev; |
| smc->hw.slot = -1; |
| smc->hw.iop = mem; |
| smc->os.ResetRequested = FALSE; |
| skb_queue_head_init(&smc->os.SendSkbQueue); |
| |
| dev->base_addr = (unsigned long)mem; |
| |
| err = skfp_driver_init(dev); |
| if (err) |
| goto err_out4; |
| |
| err = register_netdev(dev); |
| if (err) |
| goto err_out5; |
| |
| ++num_boards; |
| pci_set_drvdata(pdev, dev); |
| |
| if ((pdev->subsystem_device & 0xff00) == 0x5500 || |
| (pdev->subsystem_device & 0xff00) == 0x5800) |
| printk("%s: SysKonnect FDDI PCI adapter" |
| " found (SK-%04X)\n", dev->name, |
| pdev->subsystem_device); |
| else |
| printk("%s: FDDI PCI adapter found\n", dev->name); |
| |
| return 0; |
| err_out5: |
| if (smc->os.SharedMemAddr) |
| pci_free_consistent(pdev, smc->os.SharedMemSize, |
| smc->os.SharedMemAddr, |
| smc->os.SharedMemDMA); |
| pci_free_consistent(pdev, MAX_FRAME_SIZE, |
| smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA); |
| err_out4: |
| free_netdev(dev); |
| err_out3: |
| #ifdef MEM_MAPPED_IO |
| iounmap(mem); |
| #else |
| ioport_unmap(mem); |
| #endif |
| err_out2: |
| pci_release_regions(pdev); |
| err_out1: |
| pci_disable_device(pdev); |
| return err; |
| } |
| |
| /* |
| * Called for each adapter board from pci_unregister_driver |
| */ |
| static void __devexit skfp_remove_one(struct pci_dev *pdev) |
| { |
| struct net_device *p = pci_get_drvdata(pdev); |
| struct s_smc *lp = netdev_priv(p); |
| |
| unregister_netdev(p); |
| |
| if (lp->os.SharedMemAddr) { |
| pci_free_consistent(&lp->os.pdev, |
| lp->os.SharedMemSize, |
| lp->os.SharedMemAddr, |
| lp->os.SharedMemDMA); |
| lp->os.SharedMemAddr = NULL; |
| } |
| if (lp->os.LocalRxBuffer) { |
| pci_free_consistent(&lp->os.pdev, |
| MAX_FRAME_SIZE, |
| lp->os.LocalRxBuffer, |
| lp->os.LocalRxBufferDMA); |
| lp->os.LocalRxBuffer = NULL; |
| } |
| #ifdef MEM_MAPPED_IO |
| iounmap(lp->hw.iop); |
| #else |
| ioport_unmap(lp->hw.iop); |
| #endif |
| pci_release_regions(pdev); |
| free_netdev(p); |
| |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| } |
| |
| /* |
| * ==================== |
| * = skfp_driver_init = |
| * ==================== |
| * |
| * Overview: |
| * Initializes remaining adapter board structure information |
| * and makes sure adapter is in a safe state prior to skfp_open(). |
| * |
| * Returns: |
| * Condition code |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * This function allocates additional resources such as the host memory |
| * blocks needed by the adapter. |
| * The adapter is also reset. The OS must call skfp_open() to open |
| * the adapter and bring it on-line. |
| * |
| * Return Codes: |
| * 0 - initialization succeeded |
| * -1 - initialization failed |
| */ |
| static int skfp_driver_init(struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| skfddi_priv *bp = &smc->os; |
| int err = -EIO; |
| |
| PRINTK(KERN_INFO "entering skfp_driver_init\n"); |
| |
| // set the io address in private structures |
| bp->base_addr = dev->base_addr; |
| |
| // Get the interrupt level from the PCI Configuration Table |
| smc->hw.irq = dev->irq; |
| |
| spin_lock_init(&bp->DriverLock); |
| |
| // Allocate invalid frame |
| bp->LocalRxBuffer = pci_alloc_consistent(&bp->pdev, MAX_FRAME_SIZE, &bp->LocalRxBufferDMA); |
| if (!bp->LocalRxBuffer) { |
| printk("could not allocate mem for "); |
| printk("LocalRxBuffer: %d byte\n", MAX_FRAME_SIZE); |
| goto fail; |
| } |
| |
| // Determine the required size of the 'shared' memory area. |
| bp->SharedMemSize = mac_drv_check_space(); |
| PRINTK(KERN_INFO "Memory for HWM: %ld\n", bp->SharedMemSize); |
| if (bp->SharedMemSize > 0) { |
| bp->SharedMemSize += 16; // for descriptor alignment |
| |
| bp->SharedMemAddr = pci_alloc_consistent(&bp->pdev, |
| bp->SharedMemSize, |
| &bp->SharedMemDMA); |
| if (!bp->SharedMemSize) { |
| printk("could not allocate mem for "); |
| printk("hardware module: %ld byte\n", |
| bp->SharedMemSize); |
| goto fail; |
| } |
| bp->SharedMemHeap = 0; // Nothing used yet. |
| |
| } else { |
| bp->SharedMemAddr = NULL; |
| bp->SharedMemHeap = 0; |
| } // SharedMemSize > 0 |
| |
| memset(bp->SharedMemAddr, 0, bp->SharedMemSize); |
| |
| card_stop(smc); // Reset adapter. |
| |
| PRINTK(KERN_INFO "mac_drv_init()..\n"); |
| if (mac_drv_init(smc) != 0) { |
| PRINTK(KERN_INFO "mac_drv_init() failed.\n"); |
| goto fail; |
| } |
| read_address(smc, NULL); |
| PRINTK(KERN_INFO "HW-Addr: %02x %02x %02x %02x %02x %02x\n", |
| smc->hw.fddi_canon_addr.a[0], |
| smc->hw.fddi_canon_addr.a[1], |
| smc->hw.fddi_canon_addr.a[2], |
| smc->hw.fddi_canon_addr.a[3], |
| smc->hw.fddi_canon_addr.a[4], |
| smc->hw.fddi_canon_addr.a[5]); |
| memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); |
| |
| smt_reset_defaults(smc, 0); |
| |
| return (0); |
| |
| fail: |
| if (bp->SharedMemAddr) { |
| pci_free_consistent(&bp->pdev, |
| bp->SharedMemSize, |
| bp->SharedMemAddr, |
| bp->SharedMemDMA); |
| bp->SharedMemAddr = NULL; |
| } |
| if (bp->LocalRxBuffer) { |
| pci_free_consistent(&bp->pdev, MAX_FRAME_SIZE, |
| bp->LocalRxBuffer, bp->LocalRxBufferDMA); |
| bp->LocalRxBuffer = NULL; |
| } |
| return err; |
| } // skfp_driver_init |
| |
| |
| /* |
| * ============= |
| * = skfp_open = |
| * ============= |
| * |
| * Overview: |
| * Opens the adapter |
| * |
| * Returns: |
| * Condition code |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * This function brings the adapter to an operational state. |
| * |
| * Return Codes: |
| * 0 - Adapter was successfully opened |
| * -EAGAIN - Could not register IRQ |
| */ |
| static int skfp_open(struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| int err; |
| |
| PRINTK(KERN_INFO "entering skfp_open\n"); |
| /* Register IRQ - support shared interrupts by passing device ptr */ |
| err = request_irq(dev->irq, (void *) skfp_interrupt, IRQF_SHARED, |
| dev->name, dev); |
| if (err) |
| return err; |
| |
| /* |
| * Set current address to factory MAC address |
| * |
| * Note: We've already done this step in skfp_driver_init. |
| * However, it's possible that a user has set a node |
| * address override, then closed and reopened the |
| * adapter. Unless we reset the device address field |
| * now, we'll continue to use the existing modified |
| * address. |
| */ |
| read_address(smc, NULL); |
| memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); |
| |
| init_smt(smc, NULL); |
| smt_online(smc, 1); |
| STI_FBI(); |
| |
| /* Clear local multicast address tables */ |
| mac_clear_multicast(smc); |
| |
| /* Disable promiscuous filter settings */ |
| mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); |
| |
| netif_start_queue(dev); |
| return (0); |
| } // skfp_open |
| |
| |
| /* |
| * ============== |
| * = skfp_close = |
| * ============== |
| * |
| * Overview: |
| * Closes the device/module. |
| * |
| * Returns: |
| * Condition code |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * This routine closes the adapter and brings it to a safe state. |
| * The interrupt service routine is deregistered with the OS. |
| * The adapter can be opened again with another call to skfp_open(). |
| * |
| * Return Codes: |
| * Always return 0. |
| * |
| * Assumptions: |
| * No further requests for this adapter are made after this routine is |
| * called. skfp_open() can be called to reset and reinitialize the |
| * adapter. |
| */ |
| static int skfp_close(struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| skfddi_priv *bp = &smc->os; |
| |
| CLI_FBI(); |
| smt_reset_defaults(smc, 1); |
| card_stop(smc); |
| mac_drv_clear_tx_queue(smc); |
| mac_drv_clear_rx_queue(smc); |
| |
| netif_stop_queue(dev); |
| /* Deregister (free) IRQ */ |
| free_irq(dev->irq, dev); |
| |
| skb_queue_purge(&bp->SendSkbQueue); |
| bp->QueueSkb = MAX_TX_QUEUE_LEN; |
| |
| return (0); |
| } // skfp_close |
| |
| |
| /* |
| * ================== |
| * = skfp_interrupt = |
| * ================== |
| * |
| * Overview: |
| * Interrupt processing routine |
| * |
| * Returns: |
| * None |
| * |
| * Arguments: |
| * irq - interrupt vector |
| * dev_id - pointer to device information |
| * |
| * Functional Description: |
| * This routine calls the interrupt processing routine for this adapter. It |
| * disables and reenables adapter interrupts, as appropriate. We can support |
| * shared interrupts since the incoming dev_id pointer provides our device |
| * structure context. All the real work is done in the hardware module. |
| * |
| * Return Codes: |
| * None |
| * |
| * Assumptions: |
| * The interrupt acknowledgement at the hardware level (eg. ACKing the PIC |
| * on Intel-based systems) is done by the operating system outside this |
| * routine. |
| * |
| * System interrupts are enabled through this call. |
| * |
| * Side Effects: |
| * Interrupts are disabled, then reenabled at the adapter. |
| */ |
| |
| irqreturn_t skfp_interrupt(int irq, void *dev_id) |
| { |
| struct net_device *dev = (struct net_device *) dev_id; |
| struct s_smc *smc; /* private board structure pointer */ |
| skfddi_priv *bp; |
| |
| if (dev == NULL) { |
| printk("%s: irq %d for unknown device\n", dev->name, irq); |
| return IRQ_NONE; |
| } |
| |
| smc = netdev_priv(dev); |
| bp = &smc->os; |
| |
| // IRQs enabled or disabled ? |
| if (inpd(ADDR(B0_IMSK)) == 0) { |
| // IRQs are disabled: must be shared interrupt |
| return IRQ_NONE; |
| } |
| // Note: At this point, IRQs are enabled. |
| if ((inpd(ISR_A) & smc->hw.is_imask) == 0) { // IRQ? |
| // Adapter did not issue an IRQ: must be shared interrupt |
| return IRQ_NONE; |
| } |
| CLI_FBI(); // Disable IRQs from our adapter. |
| spin_lock(&bp->DriverLock); |
| |
| // Call interrupt handler in hardware module (HWM). |
| fddi_isr(smc); |
| |
| if (smc->os.ResetRequested) { |
| ResetAdapter(smc); |
| smc->os.ResetRequested = FALSE; |
| } |
| spin_unlock(&bp->DriverLock); |
| STI_FBI(); // Enable IRQs from our adapter. |
| |
| return IRQ_HANDLED; |
| } // skfp_interrupt |
| |
| |
| /* |
| * ====================== |
| * = skfp_ctl_get_stats = |
| * ====================== |
| * |
| * Overview: |
| * Get statistics for FDDI adapter |
| * |
| * Returns: |
| * Pointer to FDDI statistics structure |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * Gets current MIB objects from adapter, then |
| * returns FDDI statistics structure as defined |
| * in if_fddi.h. |
| * |
| * Note: Since the FDDI statistics structure is |
| * still new and the device structure doesn't |
| * have an FDDI-specific get statistics handler, |
| * we'll return the FDDI statistics structure as |
| * a pointer to an Ethernet statistics structure. |
| * That way, at least the first part of the statistics |
| * structure can be decoded properly. |
| * We'll have to pay attention to this routine as the |
| * device structure becomes more mature and LAN media |
| * independent. |
| * |
| */ |
| struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev) |
| { |
| struct s_smc *bp = netdev_priv(dev); |
| |
| /* Fill the bp->stats structure with driver-maintained counters */ |
| |
| bp->os.MacStat.port_bs_flag[0] = 0x1234; |
| bp->os.MacStat.port_bs_flag[1] = 0x5678; |
| // goos: need to fill out fddi statistic |
| #if 0 |
| /* Get FDDI SMT MIB objects */ |
| |
| /* Fill the bp->stats structure with the SMT MIB object values */ |
| |
| memcpy(bp->stats.smt_station_id, &bp->cmd_rsp_virt->smt_mib_get.smt_station_id, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_station_id)); |
| bp->stats.smt_op_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id; |
| bp->stats.smt_hi_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id; |
| bp->stats.smt_lo_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id; |
| memcpy(bp->stats.smt_user_data, &bp->cmd_rsp_virt->smt_mib_get.smt_user_data, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_user_data)); |
| bp->stats.smt_mib_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id; |
| bp->stats.smt_mac_cts = bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct; |
| bp->stats.smt_non_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct; |
| bp->stats.smt_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_master_ct; |
| bp->stats.smt_available_paths = bp->cmd_rsp_virt->smt_mib_get.smt_available_paths; |
| bp->stats.smt_config_capabilities = bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities; |
| bp->stats.smt_config_policy = bp->cmd_rsp_virt->smt_mib_get.smt_config_policy; |
| bp->stats.smt_connection_policy = bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy; |
| bp->stats.smt_t_notify = bp->cmd_rsp_virt->smt_mib_get.smt_t_notify; |
| bp->stats.smt_stat_rpt_policy = bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy; |
| bp->stats.smt_trace_max_expiration = bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration; |
| bp->stats.smt_bypass_present = bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present; |
| bp->stats.smt_ecm_state = bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state; |
| bp->stats.smt_cf_state = bp->cmd_rsp_virt->smt_mib_get.smt_cf_state; |
| bp->stats.smt_remote_disconnect_flag = bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag; |
| bp->stats.smt_station_status = bp->cmd_rsp_virt->smt_mib_get.smt_station_status; |
| bp->stats.smt_peer_wrap_flag = bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag; |
| bp->stats.smt_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls; |
| bp->stats.smt_transition_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls; |
| bp->stats.mac_frame_status_functions = bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions; |
| bp->stats.mac_t_max_capability = bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability; |
| bp->stats.mac_tvx_capability = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability; |
| bp->stats.mac_available_paths = bp->cmd_rsp_virt->smt_mib_get.mac_available_paths; |
| bp->stats.mac_current_path = bp->cmd_rsp_virt->smt_mib_get.mac_current_path; |
| memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN); |
| memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN); |
| memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN); |
| memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN); |
| bp->stats.mac_dup_address_test = bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test; |
| bp->stats.mac_requested_paths = bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths; |
| bp->stats.mac_downstream_port_type = bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type; |
| memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN); |
| bp->stats.mac_t_req = bp->cmd_rsp_virt->smt_mib_get.mac_t_req; |
| bp->stats.mac_t_neg = bp->cmd_rsp_virt->smt_mib_get.mac_t_neg; |
| bp->stats.mac_t_max = bp->cmd_rsp_virt->smt_mib_get.mac_t_max; |
| bp->stats.mac_tvx_value = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value; |
| bp->stats.mac_frame_error_threshold = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold; |
| bp->stats.mac_frame_error_ratio = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio; |
| bp->stats.mac_rmt_state = bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state; |
| bp->stats.mac_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_da_flag; |
| bp->stats.mac_una_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag; |
| bp->stats.mac_frame_error_flag = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag; |
| bp->stats.mac_ma_unitdata_available = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available; |
| bp->stats.mac_hardware_present = bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present; |
| bp->stats.mac_ma_unitdata_enable = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable; |
| bp->stats.path_tvx_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound; |
| bp->stats.path_t_max_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound; |
| bp->stats.path_max_t_req = bp->cmd_rsp_virt->smt_mib_get.path_max_t_req; |
| memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration)); |
| bp->stats.port_my_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[0]; |
| bp->stats.port_my_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[1]; |
| bp->stats.port_neighbor_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0]; |
| bp->stats.port_neighbor_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1]; |
| bp->stats.port_connection_policies[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0]; |
| bp->stats.port_connection_policies[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1]; |
| bp->stats.port_mac_indicated[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0]; |
| bp->stats.port_mac_indicated[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1]; |
| bp->stats.port_current_path[0] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[0]; |
| bp->stats.port_current_path[1] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[1]; |
| memcpy(&bp->stats.port_requested_paths[0 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3); |
| memcpy(&bp->stats.port_requested_paths[1 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3); |
| bp->stats.port_mac_placement[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0]; |
| bp->stats.port_mac_placement[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1]; |
| bp->stats.port_available_paths[0] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0]; |
| bp->stats.port_available_paths[1] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1]; |
| bp->stats.port_pmd_class[0] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0]; |
| bp->stats.port_pmd_class[1] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1]; |
| bp->stats.port_connection_capabilities[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0]; |
| bp->stats.port_connection_capabilities[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1]; |
| bp->stats.port_bs_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0]; |
| bp->stats.port_bs_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1]; |
| bp->stats.port_ler_estimate[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0]; |
| bp->stats.port_ler_estimate[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1]; |
| bp->stats.port_ler_cutoff[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0]; |
| bp->stats.port_ler_cutoff[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1]; |
| bp->stats.port_ler_alarm[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0]; |
| bp->stats.port_ler_alarm[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1]; |
| bp->stats.port_connect_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0]; |
| bp->stats.port_connect_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1]; |
| bp->stats.port_pcm_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0]; |
| bp->stats.port_pcm_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1]; |
| bp->stats.port_pc_withhold[0] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0]; |
| bp->stats.port_pc_withhold[1] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1]; |
| bp->stats.port_ler_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0]; |
| bp->stats.port_ler_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1]; |
| bp->stats.port_hardware_present[0] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0]; |
| bp->stats.port_hardware_present[1] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1]; |
| |
| |
| /* Fill the bp->stats structure with the FDDI counter values */ |
| |
| bp->stats.mac_frame_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls; |
| bp->stats.mac_copied_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls; |
| bp->stats.mac_transmit_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls; |
| bp->stats.mac_error_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls; |
| bp->stats.mac_lost_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls; |
| bp->stats.port_lct_fail_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls; |
| bp->stats.port_lct_fail_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls; |
| bp->stats.port_lem_reject_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls; |
| bp->stats.port_lem_reject_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls; |
| bp->stats.port_lem_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls; |
| bp->stats.port_lem_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls; |
| |
| #endif |
| return ((struct net_device_stats *) &bp->os.MacStat); |
| } // ctl_get_stat |
| |
| |
| /* |
| * ============================== |
| * = skfp_ctl_set_multicast_list = |
| * ============================== |
| * |
| * Overview: |
| * Enable/Disable LLC frame promiscuous mode reception |
| * on the adapter and/or update multicast address table. |
| * |
| * Returns: |
| * None |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * This function acquires the driver lock and only calls |
| * skfp_ctl_set_multicast_list_wo_lock then. |
| * This routine follows a fairly simple algorithm for setting the |
| * adapter filters and CAM: |
| * |
| * if IFF_PROMISC flag is set |
| * enable promiscuous mode |
| * else |
| * disable promiscuous mode |
| * if number of multicast addresses <= max. multicast number |
| * add mc addresses to adapter table |
| * else |
| * enable promiscuous mode |
| * update adapter filters |
| * |
| * Assumptions: |
| * Multicast addresses are presented in canonical (LSB) format. |
| * |
| * Side Effects: |
| * On-board adapter filters are updated. |
| */ |
| static void skfp_ctl_set_multicast_list(struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| skfddi_priv *bp = &smc->os; |
| unsigned long Flags; |
| |
| spin_lock_irqsave(&bp->DriverLock, Flags); |
| skfp_ctl_set_multicast_list_wo_lock(dev); |
| spin_unlock_irqrestore(&bp->DriverLock, Flags); |
| return; |
| } // skfp_ctl_set_multicast_list |
| |
| |
| |
| static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| struct dev_mc_list *dmi; /* ptr to multicast addr entry */ |
| int i; |
| |
| /* Enable promiscuous mode, if necessary */ |
| if (dev->flags & IFF_PROMISC) { |
| mac_drv_rx_mode(smc, RX_ENABLE_PROMISC); |
| PRINTK(KERN_INFO "PROMISCUOUS MODE ENABLED\n"); |
| } |
| /* Else, update multicast address table */ |
| else { |
| mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); |
| PRINTK(KERN_INFO "PROMISCUOUS MODE DISABLED\n"); |
| |
| // Reset all MC addresses |
| mac_clear_multicast(smc); |
| mac_drv_rx_mode(smc, RX_DISABLE_ALLMULTI); |
| |
| if (dev->flags & IFF_ALLMULTI) { |
| mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); |
| PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n"); |
| } else if (dev->mc_count > 0) { |
| if (dev->mc_count <= FPMAX_MULTICAST) { |
| /* use exact filtering */ |
| |
| // point to first multicast addr |
| dmi = dev->mc_list; |
| |
| for (i = 0; i < dev->mc_count; i++) { |
| mac_add_multicast(smc, |
| (struct fddi_addr *)dmi->dmi_addr, |
| 1); |
| |
| PRINTK(KERN_INFO "ENABLE MC ADDRESS:"); |
| PRINTK(" %02x %02x %02x ", |
| dmi->dmi_addr[0], |
| dmi->dmi_addr[1], |
| dmi->dmi_addr[2]); |
| PRINTK("%02x %02x %02x\n", |
| dmi->dmi_addr[3], |
| dmi->dmi_addr[4], |
| dmi->dmi_addr[5]); |
| dmi = dmi->next; |
| } // for |
| |
| } else { // more MC addresses than HW supports |
| |
| mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); |
| PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n"); |
| } |
| } else { // no MC addresses |
| |
| PRINTK(KERN_INFO "DISABLE ALL MC ADDRESSES\n"); |
| } |
| |
| /* Update adapter filters */ |
| mac_update_multicast(smc); |
| } |
| return; |
| } // skfp_ctl_set_multicast_list_wo_lock |
| |
| |
| /* |
| * =========================== |
| * = skfp_ctl_set_mac_address = |
| * =========================== |
| * |
| * Overview: |
| * set new mac address on adapter and update dev_addr field in device table. |
| * |
| * Returns: |
| * None |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * addr - pointer to sockaddr structure containing unicast address to set |
| * |
| * Assumptions: |
| * The address pointed to by addr->sa_data is a valid unicast |
| * address and is presented in canonical (LSB) format. |
| */ |
| static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| struct sockaddr *p_sockaddr = (struct sockaddr *) addr; |
| skfddi_priv *bp = &smc->os; |
| unsigned long Flags; |
| |
| |
| memcpy(dev->dev_addr, p_sockaddr->sa_data, FDDI_K_ALEN); |
| spin_lock_irqsave(&bp->DriverLock, Flags); |
| ResetAdapter(smc); |
| spin_unlock_irqrestore(&bp->DriverLock, Flags); |
| |
| return (0); /* always return zero */ |
| } // skfp_ctl_set_mac_address |
| |
| |
| /* |
| * ============== |
| * = skfp_ioctl = |
| * ============== |
| * |
| * Overview: |
| * |
| * Perform IOCTL call functions here. Some are privileged operations and the |
| * effective uid is checked in those cases. |
| * |
| * Returns: |
| * status value |
| * 0 - success |
| * other - failure |
| * |
| * Arguments: |
| * dev - pointer to device information |
| * rq - pointer to ioctl request structure |
| * cmd - ? |
| * |
| */ |
| |
| |
| static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| skfddi_priv *lp = &smc->os; |
| struct s_skfp_ioctl ioc; |
| int status = 0; |
| |
| if (copy_from_user(&ioc, rq->ifr_data, sizeof(struct s_skfp_ioctl))) |
| return -EFAULT; |
| |
| switch (ioc.cmd) { |
| case SKFP_GET_STATS: /* Get the driver statistics */ |
| ioc.len = sizeof(lp->MacStat); |
| status = copy_to_user(ioc.data, skfp_ctl_get_stats(dev), ioc.len) |
| ? -EFAULT : 0; |
| break; |
| case SKFP_CLR_STATS: /* Zero out the driver statistics */ |
| if (!capable(CAP_NET_ADMIN)) { |
| memset(&lp->MacStat, 0, sizeof(lp->MacStat)); |
| } else { |
| status = -EPERM; |
| } |
| break; |
| default: |
| printk("ioctl for %s: unknow cmd: %04x\n", dev->name, ioc.cmd); |
| status = -EOPNOTSUPP; |
| |
| } // switch |
| |
| return status; |
| } // skfp_ioctl |
| |
| |
| /* |
| * ===================== |
| * = skfp_send_pkt = |
| * ===================== |
| * |
| * Overview: |
| * Queues a packet for transmission and try to transmit it. |
| * |
| * Returns: |
| * Condition code |
| * |
| * Arguments: |
| * skb - pointer to sk_buff to queue for transmission |
| * dev - pointer to device information |
| * |
| * Functional Description: |
| * Here we assume that an incoming skb transmit request |
| * is contained in a single physically contiguous buffer |
| * in which the virtual address of the start of packet |
| * (skb->data) can be converted to a physical address |
| * by using pci_map_single(). |
| * |
| * We have an internal queue for packets we can not send |
| * immediately. Packets in this queue can be given to the |
| * adapter if transmit buffers are freed. |
| * |
| * We can't free the skb until after it's been DMA'd |
| * out by the adapter, so we'll keep it in the driver and |
| * return it in mac_drv_tx_complete. |
| * |
| * Return Codes: |
| * 0 - driver has queued and/or sent packet |
| * 1 - caller should requeue the sk_buff for later transmission |
| * |
| * Assumptions: |
| * The entire packet is stored in one physically |
| * contiguous buffer which is not cached and whose |
| * 32-bit physical address can be determined. |
| * |
| * It's vital that this routine is NOT reentered for the |
| * same board and that the OS is not in another section of |
| * code (eg. skfp_interrupt) for the same board on a |
| * different thread. |
| * |
| * Side Effects: |
| * None |
| */ |
| static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct s_smc *smc = netdev_priv(dev); |
| skfddi_priv *bp = &smc->os; |
| |
| PRINTK(KERN_INFO "skfp_send_pkt\n"); |
| |
| /* |
| * Verify that incoming transmit request is OK |
| * |
| * Note: The packet size check is consistent with other |
| * Linux device drivers, although the correct packet |
| * size should be verified before calling the |
| * transmit routine. |
| */ |
| |
| if (!(skb->len >= FDDI_K_LLC_ZLEN && skb->len <= FDDI_K_LLC_LEN)) { |
| bp->MacStat.gen.tx_errors++; /* bump error counter */ |
| // dequeue packets from xmt queue and send them |
| netif_start_queue(dev); |
| dev_kfree_skb(skb); |
| return (0); /* return "success" */ |
| } |
| if (bp->QueueSkb == 0) { // return with tbusy set: queue full |
| |
| netif_stop_queue(dev); |
| return 1; |
| } |
| bp->QueueSkb--; |
| skb_queue_tail(&bp->SendSkbQueue, skb); |
| send_queued_packets(netdev_priv(dev)); |
| if (bp->QueueSkb == 0) { |
| netif_stop_queue(dev); |
| } |
| dev->trans_start = jiffies; |
| return 0; |
| |
| } // skfp_send_pkt |
| |
| |
| /* |
| * ======================= |
| * = send_queued_packets = |
| * ======================= |
| * |
| * Overview: |
| * Send packets from the driver queue as long as there are some and |
| * transmit resources are available. |
| * |
| * Returns: |
| * None |
| * |
| * Arguments: |
| * smc - pointer to smc (adapter) structure |
| * |
| * Functional Description: |
| * Take a packet from queue if there is any. If not, then we are done. |
| * Check if there are resources to send the packet. If not, requeue it |
| * and exit. |
| * Set packet descriptor flags and give packet to adapter. |
| * Check if any send resources can be freed (we do not use the |
| * transmit complete interrupt). |
| */ |
| static void send_queued_packets(struct s_smc *smc) |
| { |
| skfddi_priv *bp = &smc->os; |
| struct sk_buff *skb; |
| unsigned char fc; |
| int queue; |
| struct s_smt_fp_txd *txd; // Current TxD. |
| dma_addr_t dma_address; |
| unsigned long Flags; |
| |
| int frame_status; // HWM tx frame status. |
| |
| PRINTK(KERN_INFO "send queued packets\n"); |
| for (;;) { |
| // send first buffer from queue |
| skb = skb_dequeue(&bp->SendSkbQueue); |
| |
| if (!skb) { |
| PRINTK(KERN_INFO "queue empty\n"); |
| return; |
| } // queue empty ! |
| |
| spin_lock_irqsave(&bp->DriverLock, Flags); |
| fc = skb->data[0]; |
| queue = (fc & FC_SYNC_BIT) ? QUEUE_S : QUEUE_A0; |
| #ifdef ESS |
| // Check if the frame may/must be sent as a synchronous frame. |
| |
| if ((fc & ~(FC_SYNC_BIT | FC_LLC_PRIOR)) == FC_ASYNC_LLC) { |
| // It's an LLC frame. |
| if (!smc->ess.sync_bw_available) |
| fc &= ~FC_SYNC_BIT; // No bandwidth available. |
| |
| else { // Bandwidth is available. |
| |
| if (smc->mib.fddiESSSynchTxMode) { |
| // Send as sync. frame. |
| fc |= FC_SYNC_BIT; |
| } |
| } |
| } |
| #endif // ESS |
| frame_status = hwm_tx_init(smc, fc, 1, skb->len, queue); |
| |
| if ((frame_status & (LOC_TX | LAN_TX)) == 0) { |
| // Unable to send the frame. |
| |
| if ((frame_status & RING_DOWN) != 0) { |
| // Ring is down. |
| PRINTK("Tx attempt while ring down.\n"); |
| } else if ((frame_status & OUT_OF_TXD) != 0) { |
| PRINTK("%s: out of TXDs.\n", bp->dev->name); |
| } else { |
| PRINTK("%s: out of transmit resources", |
| bp->dev->name); |
| } |
| |
| // Note: We will retry the operation as soon as |
| // transmit resources become available. |
| skb_queue_head(&bp->SendSkbQueue, skb); |
| spin_unlock_irqrestore(&bp->DriverLock, Flags); |
| return; // Packet has been queued. |
| |
| } // if (unable to send frame) |
| |
| bp->QueueSkb++; // one packet less in local queue |
| |
| // source address in packet ? |
| CheckSourceAddress(skb->data, smc->hw.fddi_canon_addr.a); |
| |
| txd = (struct s_smt_fp_txd *) HWM_GET_CURR_TXD(smc, queue); |
| |
| dma_address = pci_map_single(&bp->pdev, skb->data, |
| skb->len, PCI_DMA_TODEVICE); |
| if (frame_status & LAN_TX) { |
| txd->txd_os.skb = skb; // save skb |
| txd->txd_os.dma_addr = dma_address; // save dma mapping |
| } |
| hwm_tx_frag(smc, skb->data, dma_address, skb->len, |
| frame_status | FIRST_FRAG | LAST_FRAG | EN_IRQ_EOF); |
| |
| if (!(frame_status & LAN_TX)) { // local only frame |
| pci_unmap_single(&bp->pdev, dma_address, |
| skb->len, PCI_DMA_TODEVICE); |
| dev_kfree_skb_irq(skb); |
| } |
| spin_unlock_irqrestore(&bp->DriverLock, Flags); |
| } // for |
| |
| return; // never reached |
| |
| } // send_queued_packets |
| |
| |
| /************************ |
| * |
| * CheckSourceAddress |
| * |
| * Verify if the source address is set. Insert it if necessary. |
| * |
| ************************/ |
| void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr) |
| { |
| unsigned char SRBit; |
| |
| if ((((unsigned long) frame[1 + 6]) & ~0x01) != 0) // source routing bit |
| |
| return; |
| if ((unsigned short) frame[1 + 10] != 0) |
| return; |
| SRBit = frame[1 + 6] & 0x01; |
| memcpy(&frame[1 + 6], hw_addr, 6); |
| frame[8] |= SRBit; |
| } // CheckSourceAddress |
| |
| |
| /************************ |
| * |
| * ResetAdapter |
| * |
| * Reset the adapter and bring it back to operational mode. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| static void ResetAdapter(struct s_smc *smc) |
| { |
| |
| PRINTK(KERN_INFO "[fddi: ResetAdapter]\n"); |
| |
| // Stop the adapter. |
| |
| card_stop(smc); // Stop all activity. |
| |
| // Clear the transmit and receive descriptor queues. |
| mac_drv_clear_tx_queue(smc); |
| mac_drv_clear_rx_queue(smc); |
| |
| // Restart the adapter. |
| |
| smt_reset_defaults(smc, 1); // Initialize the SMT module. |
| |
| init_smt(smc, (smc->os.dev)->dev_addr); // Initialize the hardware. |
| |
| smt_online(smc, 1); // Insert into the ring again. |
| STI_FBI(); |
| |
| // Restore original receive mode (multicasts, promiscuous, etc.). |
| skfp_ctl_set_multicast_list_wo_lock(smc->os.dev); |
| } // ResetAdapter |
| |
| |
| //--------------- functions called by hardware module ---------------- |
| |
| /************************ |
| * |
| * llc_restart_tx |
| * |
| * The hardware driver calls this routine when the transmit complete |
| * interrupt bits (end of frame) for the synchronous or asynchronous |
| * queue is set. |
| * |
| * NOTE The hardware driver calls this function also if no packets are queued. |
| * The routine must be able to handle this case. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void llc_restart_tx(struct s_smc *smc) |
| { |
| skfddi_priv *bp = &smc->os; |
| |
| PRINTK(KERN_INFO "[llc_restart_tx]\n"); |
| |
| // Try to send queued packets |
| spin_unlock(&bp->DriverLock); |
| send_queued_packets(smc); |
| spin_lock(&bp->DriverLock); |
| netif_start_queue(bp->dev);// system may send again if it was blocked |
| |
| } // llc_restart_tx |
| |
| |
| /************************ |
| * |
| * mac_drv_get_space |
| * |
| * The hardware module calls this function to allocate the memory |
| * for the SMT MBufs if the define MB_OUTSIDE_SMC is specified. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * size - Size of memory in bytes to allocate. |
| * Out |
| * != 0 A pointer to the virtual address of the allocated memory. |
| * == 0 Allocation error. |
| * |
| ************************/ |
| void *mac_drv_get_space(struct s_smc *smc, unsigned int size) |
| { |
| void *virt; |
| |
| PRINTK(KERN_INFO "mac_drv_get_space (%d bytes), ", size); |
| virt = (void *) (smc->os.SharedMemAddr + smc->os.SharedMemHeap); |
| |
| if ((smc->os.SharedMemHeap + size) > smc->os.SharedMemSize) { |
| printk("Unexpected SMT memory size requested: %d\n", size); |
| return (NULL); |
| } |
| smc->os.SharedMemHeap += size; // Move heap pointer. |
| |
| PRINTK(KERN_INFO "mac_drv_get_space end\n"); |
| PRINTK(KERN_INFO "virt addr: %lx\n", (ulong) virt); |
| PRINTK(KERN_INFO "bus addr: %lx\n", (ulong) |
| (smc->os.SharedMemDMA + |
| ((char *) virt - (char *)smc->os.SharedMemAddr))); |
| return (virt); |
| } // mac_drv_get_space |
| |
| |
| /************************ |
| * |
| * mac_drv_get_desc_mem |
| * |
| * This function is called by the hardware dependent module. |
| * It allocates the memory for the RxD and TxD descriptors. |
| * |
| * This memory must be non-cached, non-movable and non-swappable. |
| * This memory should start at a physical page boundary. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * size - Size of memory in bytes to allocate. |
| * Out |
| * != 0 A pointer to the virtual address of the allocated memory. |
| * == 0 Allocation error. |
| * |
| ************************/ |
| void *mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size) |
| { |
| |
| char *virt; |
| |
| PRINTK(KERN_INFO "mac_drv_get_desc_mem\n"); |
| |
| // Descriptor memory must be aligned on 16-byte boundary. |
| |
| virt = mac_drv_get_space(smc, size); |
| |
| size = (u_int) (16 - (((unsigned long) virt) & 15UL)); |
| size = size % 16; |
| |
| PRINTK("Allocate %u bytes alignment gap ", size); |
| PRINTK("for descriptor memory.\n"); |
| |
| if (!mac_drv_get_space(smc, size)) { |
| printk("fddi: Unable to align descriptor memory.\n"); |
| return (NULL); |
| } |
| return (virt + size); |
| } // mac_drv_get_desc_mem |
| |
| |
| /************************ |
| * |
| * mac_drv_virt2phys |
| * |
| * Get the physical address of a given virtual address. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * virt - A (virtual) pointer into our 'shared' memory area. |
| * Out |
| * Physical address of the given virtual address. |
| * |
| ************************/ |
| unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt) |
| { |
| return (smc->os.SharedMemDMA + |
| ((char *) virt - (char *)smc->os.SharedMemAddr)); |
| } // mac_drv_virt2phys |
| |
| |
| /************************ |
| * |
| * dma_master |
| * |
| * The HWM calls this function, when the driver leads through a DMA |
| * transfer. If the OS-specific module must prepare the system hardware |
| * for the DMA transfer, it should do it in this function. |
| * |
| * The hardware module calls this dma_master if it wants to send an SMT |
| * frame. This means that the virt address passed in here is part of |
| * the 'shared' memory area. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * virt - The virtual address of the data. |
| * |
| * len - The length in bytes of the data. |
| * |
| * flag - Indicates the transmit direction and the buffer type: |
| * DMA_RD (0x01) system RAM ==> adapter buffer memory |
| * DMA_WR (0x02) adapter buffer memory ==> system RAM |
| * SMT_BUF (0x80) SMT buffer |
| * |
| * >> NOTE: SMT_BUF and DMA_RD are always set for PCI. << |
| * Out |
| * Returns the pyhsical address for the DMA transfer. |
| * |
| ************************/ |
| u_long dma_master(struct s_smc * smc, void *virt, int len, int flag) |
| { |
| return (smc->os.SharedMemDMA + |
| ((char *) virt - (char *)smc->os.SharedMemAddr)); |
| } // dma_master |
| |
| |
| /************************ |
| * |
| * dma_complete |
| * |
| * The hardware module calls this routine when it has completed a DMA |
| * transfer. If the operating system dependent module has set up the DMA |
| * channel via dma_master() (e.g. Windows NT or AIX) it should clean up |
| * the DMA channel. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * descr - A pointer to a TxD or RxD, respectively. |
| * |
| * flag - Indicates the DMA transfer direction / SMT buffer: |
| * DMA_RD (0x01) system RAM ==> adapter buffer memory |
| * DMA_WR (0x02) adapter buffer memory ==> system RAM |
| * SMT_BUF (0x80) SMT buffer (managed by HWM) |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, int flag) |
| { |
| /* For TX buffers, there are two cases. If it is an SMT transmit |
| * buffer, there is nothing to do since we use consistent memory |
| * for the 'shared' memory area. The other case is for normal |
| * transmit packets given to us by the networking stack, and in |
| * that case we cleanup the PCI DMA mapping in mac_drv_tx_complete |
| * below. |
| * |
| * For RX buffers, we have to unmap dynamic PCI DMA mappings here |
| * because the hardware module is about to potentially look at |
| * the contents of the buffer. If we did not call the PCI DMA |
| * unmap first, the hardware module could read inconsistent data. |
| */ |
| if (flag & DMA_WR) { |
| skfddi_priv *bp = &smc->os; |
| volatile struct s_smt_fp_rxd *r = &descr->r; |
| |
| /* If SKB is NULL, we used the local buffer. */ |
| if (r->rxd_os.skb && r->rxd_os.dma_addr) { |
| int MaxFrameSize = bp->MaxFrameSize; |
| |
| pci_unmap_single(&bp->pdev, r->rxd_os.dma_addr, |
| MaxFrameSize, PCI_DMA_FROMDEVICE); |
| r->rxd_os.dma_addr = 0; |
| } |
| } |
| } // dma_complete |
| |
| |
| /************************ |
| * |
| * mac_drv_tx_complete |
| * |
| * Transmit of a packet is complete. Release the tx staging buffer. |
| * |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * txd - A pointer to the last TxD which is used by the frame. |
| * Out |
| * Returns nothing. |
| * |
| ************************/ |
| void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd) |
| { |
| struct sk_buff *skb; |
| |
| PRINTK(KERN_INFO "entering mac_drv_tx_complete\n"); |
| // Check if this TxD points to a skb |
| |
| if (!(skb = txd->txd_os.skb)) { |
| PRINTK("TXD with no skb assigned.\n"); |
| return; |
| } |
| txd->txd_os.skb = NULL; |
| |
| // release the DMA mapping |
| pci_unmap_single(&smc->os.pdev, txd->txd_os.dma_addr, |
| skb->len, PCI_DMA_TODEVICE); |
| txd->txd_os.dma_addr = 0; |
| |
| smc->os.MacStat.gen.tx_packets++; // Count transmitted packets. |
| smc->os.MacStat.gen.tx_bytes+=skb->len; // Count bytes |
| |
| // free the skb |
| dev_kfree_skb_irq(skb); |
| |
| PRINTK(KERN_INFO "leaving mac_drv_tx_complete\n"); |
| } // mac_drv_tx_complete |
| |
| |
| /************************ |
| * |
| * dump packets to logfile |
| * |
| ************************/ |
| #ifdef DUMPPACKETS |
| void dump_data(unsigned char *Data, int length) |
| { |
| int i, j; |
| unsigned char s[255], sh[10]; |
| if (length > 64) { |
| length = 64; |
| } |
| printk(KERN_INFO "---Packet start---\n"); |
| for (i = 0, j = 0; i < length / 8; i++, j += 8) |
| printk(KERN_INFO "%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]); |
| strcpy(s, ""); |
| for (i = 0; i < length % 8; i++) { |
| sprintf(sh, "%02x ", Data[j + i]); |
| strcat(s, sh); |
| } |
| printk(KERN_INFO "%s\n", s); |
| printk(KERN_INFO "------------------\n"); |
| } // dump_data |
| #else |
| #define dump_data(data,len) |
| #endif // DUMPPACKETS |
| |
| /************************ |
| * |
| * mac_drv_rx_complete |
| * |
| * The hardware module calls this function if an LLC frame is received |
| * in a receive buffer. Also the SMT, NSA, and directed beacon frames |
| * from the network will be passed to the LLC layer by this function |
| * if passing is enabled. |
| * |
| * mac_drv_rx_complete forwards the frame to the LLC layer if it should |
| * be received. It also fills the RxD ring with new receive buffers if |
| * some can be queued. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * rxd - A pointer to the first RxD which is used by the receive frame. |
| * |
| * frag_count - Count of RxDs used by the received frame. |
| * |
| * len - Frame length. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count, int len) |
| { |
| skfddi_priv *bp = &smc->os; |
| struct sk_buff *skb; |
| unsigned char *virt, *cp; |
| unsigned short ri; |
| u_int RifLength; |
| |
| PRINTK(KERN_INFO "entering mac_drv_rx_complete (len=%d)\n", len); |
| if (frag_count != 1) { // This is not allowed to happen. |
| |
| printk("fddi: Multi-fragment receive!\n"); |
| goto RequeueRxd; // Re-use the given RXD(s). |
| |
| } |
| skb = rxd->rxd_os.skb; |
| if (!skb) { |
| PRINTK(KERN_INFO "No skb in rxd\n"); |
| smc->os.MacStat.gen.rx_errors++; |
| goto RequeueRxd; |
| } |
| virt = skb->data; |
| |
| // The DMA mapping was released in dma_complete above. |
| |
| dump_data(skb->data, len); |
| |
| /* |
| * FDDI Frame format: |
| * +-------+-------+-------+------------+--------+------------+ |
| * | FC[1] | DA[6] | SA[6] | RIF[0..18] | LLC[3] | Data[0..n] | |
| * +-------+-------+-------+------------+--------+------------+ |
| * |
| * FC = Frame Control |
| * DA = Destination Address |
| * SA = Source Address |
| * RIF = Routing Information Field |
| * LLC = Logical Link Control |
| */ |
| |
| // Remove Routing Information Field (RIF), if present. |
| |
| if ((virt[1 + 6] & FDDI_RII) == 0) |
| RifLength = 0; |
| else { |
| int n; |
| // goos: RIF removal has still to be tested |
| PRINTK(KERN_INFO "RIF found\n"); |
| // Get RIF length from Routing Control (RC) field. |
| cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header. |
| |
| ri = ntohs(*((unsigned short *) cp)); |
| RifLength = ri & FDDI_RCF_LEN_MASK; |
| if (len < (int) (FDDI_MAC_HDR_LEN + RifLength)) { |
| printk("fddi: Invalid RIF.\n"); |
| goto RequeueRxd; // Discard the frame. |
| |
| } |
| virt[1 + 6] &= ~FDDI_RII; // Clear RII bit. |
| // regions overlap |
| |
| virt = cp + RifLength; |
| for (n = FDDI_MAC_HDR_LEN; n; n--) |
| *--virt = *--cp; |
| // adjust sbd->data pointer |
| skb_pull(skb, RifLength); |
| len -= RifLength; |
| RifLength = 0; |
| } |
| |
| // Count statistics. |
| smc->os.MacStat.gen.rx_packets++; // Count indicated receive |
| // packets. |
| smc->os.MacStat.gen.rx_bytes+=len; // Count bytes. |
| |
| // virt points to header again |
| if (virt[1] & 0x01) { // Check group (multicast) bit. |
| |
| smc->os.MacStat.gen.multicast++; |
| } |
| |
| // deliver frame to system |
| rxd->rxd_os.skb = NULL; |
| skb_trim(skb, len); |
| skb->protocol = fddi_type_trans(skb, bp->dev); |
| skb->dev = bp->dev; /* pass up device pointer */ |
| |
| netif_rx(skb); |
| bp->dev->last_rx = jiffies; |
| |
| HWM_RX_CHECK(smc, RX_LOW_WATERMARK); |
| return; |
| |
| RequeueRxd: |
| PRINTK(KERN_INFO "Rx: re-queue RXD.\n"); |
| mac_drv_requeue_rxd(smc, rxd, frag_count); |
| smc->os.MacStat.gen.rx_errors++; // Count receive packets |
| // not indicated. |
| |
| } // mac_drv_rx_complete |
| |
| |
| /************************ |
| * |
| * mac_drv_requeue_rxd |
| * |
| * The hardware module calls this function to request the OS-specific |
| * module to queue the receive buffer(s) represented by the pointer |
| * to the RxD and the frag_count into the receive queue again. This |
| * buffer was filled with an invalid frame or an SMT frame. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * rxd - A pointer to the first RxD which is used by the receive frame. |
| * |
| * frag_count - Count of RxDs used by the received frame. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count) |
| { |
| volatile struct s_smt_fp_rxd *next_rxd; |
| volatile struct s_smt_fp_rxd *src_rxd; |
| struct sk_buff *skb; |
| int MaxFrameSize; |
| unsigned char *v_addr; |
| dma_addr_t b_addr; |
| |
| if (frag_count != 1) // This is not allowed to happen. |
| |
| printk("fddi: Multi-fragment requeue!\n"); |
| |
| MaxFrameSize = smc->os.MaxFrameSize; |
| src_rxd = rxd; |
| for (; frag_count > 0; frag_count--) { |
| next_rxd = src_rxd->rxd_next; |
| rxd = HWM_GET_CURR_RXD(smc); |
| |
| skb = src_rxd->rxd_os.skb; |
| if (skb == NULL) { // this should not happen |
| |
| PRINTK("Requeue with no skb in rxd!\n"); |
| skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); |
| if (skb) { |
| // we got a skb |
| rxd->rxd_os.skb = skb; |
| skb_reserve(skb, 3); |
| skb_put(skb, MaxFrameSize); |
| v_addr = skb->data; |
| b_addr = pci_map_single(&smc->os.pdev, |
| v_addr, |
| MaxFrameSize, |
| PCI_DMA_FROMDEVICE); |
| rxd->rxd_os.dma_addr = b_addr; |
| } else { |
| // no skb available, use local buffer |
| PRINTK("Queueing invalid buffer!\n"); |
| rxd->rxd_os.skb = NULL; |
| v_addr = smc->os.LocalRxBuffer; |
| b_addr = smc->os.LocalRxBufferDMA; |
| } |
| } else { |
| // we use skb from old rxd |
| rxd->rxd_os.skb = skb; |
| v_addr = skb->data; |
| b_addr = pci_map_single(&smc->os.pdev, |
| v_addr, |
| MaxFrameSize, |
| PCI_DMA_FROMDEVICE); |
| rxd->rxd_os.dma_addr = b_addr; |
| } |
| hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, |
| FIRST_FRAG | LAST_FRAG); |
| |
| src_rxd = next_rxd; |
| } |
| } // mac_drv_requeue_rxd |
| |
| |
| /************************ |
| * |
| * mac_drv_fill_rxd |
| * |
| * The hardware module calls this function at initialization time |
| * to fill the RxD ring with receive buffers. It is also called by |
| * mac_drv_rx_complete if rx_free is large enough to queue some new |
| * receive buffers into the RxD ring. mac_drv_fill_rxd queues new |
| * receive buffers as long as enough RxDs and receive buffers are |
| * available. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void mac_drv_fill_rxd(struct s_smc *smc) |
| { |
| int MaxFrameSize; |
| unsigned char *v_addr; |
| unsigned long b_addr; |
| struct sk_buff *skb; |
| volatile struct s_smt_fp_rxd *rxd; |
| |
| PRINTK(KERN_INFO "entering mac_drv_fill_rxd\n"); |
| |
| // Walk through the list of free receive buffers, passing receive |
| // buffers to the HWM as long as RXDs are available. |
| |
| MaxFrameSize = smc->os.MaxFrameSize; |
| // Check if there is any RXD left. |
| while (HWM_GET_RX_FREE(smc) > 0) { |
| PRINTK(KERN_INFO ".\n"); |
| |
| rxd = HWM_GET_CURR_RXD(smc); |
| skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); |
| if (skb) { |
| // we got a skb |
| skb_reserve(skb, 3); |
| skb_put(skb, MaxFrameSize); |
| v_addr = skb->data; |
| b_addr = pci_map_single(&smc->os.pdev, |
| v_addr, |
| MaxFrameSize, |
| PCI_DMA_FROMDEVICE); |
| rxd->rxd_os.dma_addr = b_addr; |
| } else { |
| // no skb available, use local buffer |
| // System has run out of buffer memory, but we want to |
| // keep the receiver running in hope of better times. |
| // Multiple descriptors may point to this local buffer, |
| // so data in it must be considered invalid. |
| PRINTK("Queueing invalid buffer!\n"); |
| v_addr = smc->os.LocalRxBuffer; |
| b_addr = smc->os.LocalRxBufferDMA; |
| } |
| |
| rxd->rxd_os.skb = skb; |
| |
| // Pass receive buffer to HWM. |
| hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, |
| FIRST_FRAG | LAST_FRAG); |
| } |
| PRINTK(KERN_INFO "leaving mac_drv_fill_rxd\n"); |
| } // mac_drv_fill_rxd |
| |
| |
| /************************ |
| * |
| * mac_drv_clear_rxd |
| * |
| * The hardware module calls this function to release unused |
| * receive buffers. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * rxd - A pointer to the first RxD which is used by the receive buffer. |
| * |
| * frag_count - Count of RxDs used by the receive buffer. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
| int frag_count) |
| { |
| |
| struct sk_buff *skb; |
| |
| PRINTK("entering mac_drv_clear_rxd\n"); |
| |
| if (frag_count != 1) // This is not allowed to happen. |
| |
| printk("fddi: Multi-fragment clear!\n"); |
| |
| for (; frag_count > 0; frag_count--) { |
| skb = rxd->rxd_os.skb; |
| if (skb != NULL) { |
| skfddi_priv *bp = &smc->os; |
| int MaxFrameSize = bp->MaxFrameSize; |
| |
| pci_unmap_single(&bp->pdev, rxd->rxd_os.dma_addr, |
| MaxFrameSize, PCI_DMA_FROMDEVICE); |
| |
| dev_kfree_skb(skb); |
| rxd->rxd_os.skb = NULL; |
| } |
| rxd = rxd->rxd_next; // Next RXD. |
| |
| } |
| } // mac_drv_clear_rxd |
| |
| |
| /************************ |
| * |
| * mac_drv_rx_init |
| * |
| * The hardware module calls this routine when an SMT or NSA frame of the |
| * local SMT should be delivered to the LLC layer. |
| * |
| * It is necessary to have this function, because there is no other way to |
| * copy the contents of SMT MBufs into receive buffers. |
| * |
| * mac_drv_rx_init allocates the required target memory for this frame, |
| * and receives the frame fragment by fragment by calling mac_drv_rx_frag. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * len - The length (in bytes) of the received frame (FC, DA, SA, Data). |
| * |
| * fc - The Frame Control field of the received frame. |
| * |
| * look_ahead - A pointer to the lookahead data buffer (may be NULL). |
| * |
| * la_len - The length of the lookahead data stored in the lookahead |
| * buffer (may be zero). |
| * Out |
| * Always returns zero (0). |
| * |
| ************************/ |
| int mac_drv_rx_init(struct s_smc *smc, int len, int fc, |
| char *look_ahead, int la_len) |
| { |
| struct sk_buff *skb; |
| |
| PRINTK("entering mac_drv_rx_init(len=%d)\n", len); |
| |
| // "Received" a SMT or NSA frame of the local SMT. |
| |
| if (len != la_len || len < FDDI_MAC_HDR_LEN || !look_ahead) { |
| PRINTK("fddi: Discard invalid local SMT frame\n"); |
| PRINTK(" len=%d, la_len=%d, (ULONG) look_ahead=%08lXh.\n", |
| len, la_len, (unsigned long) look_ahead); |
| return (0); |
| } |
| skb = alloc_skb(len + 3, GFP_ATOMIC); |
| if (!skb) { |
| PRINTK("fddi: Local SMT: skb memory exhausted.\n"); |
| return (0); |
| } |
| skb_reserve(skb, 3); |
| skb_put(skb, len); |
| memcpy(skb->data, look_ahead, len); |
| |
| // deliver frame to system |
| skb->protocol = fddi_type_trans(skb, smc->os.dev); |
| skb->dev->last_rx = jiffies; |
| netif_rx(skb); |
| |
| return (0); |
| } // mac_drv_rx_init |
| |
| |
| /************************ |
| * |
| * smt_timer_poll |
| * |
| * This routine is called periodically by the SMT module to clean up the |
| * driver. |
| * |
| * Return any queued frames back to the upper protocol layers if the ring |
| * is down. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void smt_timer_poll(struct s_smc *smc) |
| { |
| } // smt_timer_poll |
| |
| |
| /************************ |
| * |
| * ring_status_indication |
| * |
| * This function indicates a change of the ring state. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * status - The current ring status. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void ring_status_indication(struct s_smc *smc, u_long status) |
| { |
| PRINTK("ring_status_indication( "); |
| if (status & RS_RES15) |
| PRINTK("RS_RES15 "); |
| if (status & RS_HARDERROR) |
| PRINTK("RS_HARDERROR "); |
| if (status & RS_SOFTERROR) |
| PRINTK("RS_SOFTERROR "); |
| if (status & RS_BEACON) |
| PRINTK("RS_BEACON "); |
| if (status & RS_PATHTEST) |
| PRINTK("RS_PATHTEST "); |
| if (status & RS_SELFTEST) |
| PRINTK("RS_SELFTEST "); |
| if (status & RS_RES9) |
| PRINTK("RS_RES9 "); |
| if (status & RS_DISCONNECT) |
| PRINTK("RS_DISCONNECT "); |
| if (status & RS_RES7) |
| PRINTK("RS_RES7 "); |
| if (status & RS_DUPADDR) |
| PRINTK("RS_DUPADDR "); |
| if (status & RS_NORINGOP) |
| PRINTK("RS_NORINGOP "); |
| if (status & RS_VERSION) |
| PRINTK("RS_VERSION "); |
| if (status & RS_STUCKBYPASSS) |
| PRINTK("RS_STUCKBYPASSS "); |
| if (status & RS_EVENT) |
| PRINTK("RS_EVENT "); |
| if (status & RS_RINGOPCHANGE) |
| PRINTK("RS_RINGOPCHANGE "); |
| if (status & RS_RES0) |
| PRINTK("RS_RES0 "); |
| PRINTK("]\n"); |
| } // ring_status_indication |
| |
| |
| /************************ |
| * |
| * smt_get_time |
| * |
| * Gets the current time from the system. |
| * Args |
| * None. |
| * Out |
| * The current time in TICKS_PER_SECOND. |
| * |
| * TICKS_PER_SECOND has the unit 'count of timer ticks per second'. It is |
| * defined in "targetos.h". The definition of TICKS_PER_SECOND must comply |
| * to the time returned by smt_get_time(). |
| * |
| ************************/ |
| unsigned long smt_get_time(void) |
| { |
| return jiffies; |
| } // smt_get_time |
| |
| |
| /************************ |
| * |
| * smt_stat_counter |
| * |
| * Status counter update (ring_op, fifo full). |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * stat - = 0: A ring operational change occurred. |
| * = 1: The FORMAC FIFO buffer is full / FIFO overflow. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void smt_stat_counter(struct s_smc *smc, int stat) |
| { |
| // BOOLEAN RingIsUp ; |
| |
| PRINTK(KERN_INFO "smt_stat_counter\n"); |
| switch (stat) { |
| case 0: |
| PRINTK(KERN_INFO "Ring operational change.\n"); |
| break; |
| case 1: |
| PRINTK(KERN_INFO "Receive fifo overflow.\n"); |
| smc->os.MacStat.gen.rx_errors++; |
| break; |
| default: |
| PRINTK(KERN_INFO "Unknown status (%d).\n", stat); |
| break; |
| } |
| } // smt_stat_counter |
| |
| |
| /************************ |
| * |
| * cfm_state_change |
| * |
| * Sets CFM state in custom statistics. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * c_state - Possible values are: |
| * |
| * EC0_OUT, EC1_IN, EC2_TRACE, EC3_LEAVE, EC4_PATH_TEST, |
| * EC5_INSERT, EC6_CHECK, EC7_DEINSERT |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void cfm_state_change(struct s_smc *smc, int c_state) |
| { |
| #ifdef DRIVERDEBUG |
| char *s; |
| |
| switch (c_state) { |
| case SC0_ISOLATED: |
| s = "SC0_ISOLATED"; |
| break; |
| case SC1_WRAP_A: |
| s = "SC1_WRAP_A"; |
| break; |
| case SC2_WRAP_B: |
| s = "SC2_WRAP_B"; |
| break; |
| case SC4_THRU_A: |
| s = "SC4_THRU_A"; |
| break; |
| case SC5_THRU_B: |
| s = "SC5_THRU_B"; |
| break; |
| case SC7_WRAP_S: |
| s = "SC7_WRAP_S"; |
| break; |
| case SC9_C_WRAP_A: |
| s = "SC9_C_WRAP_A"; |
| break; |
| case SC10_C_WRAP_B: |
| s = "SC10_C_WRAP_B"; |
| break; |
| case SC11_C_WRAP_S: |
| s = "SC11_C_WRAP_S"; |
| break; |
| default: |
| PRINTK(KERN_INFO "cfm_state_change: unknown %d\n", c_state); |
| return; |
| } |
| PRINTK(KERN_INFO "cfm_state_change: %s\n", s); |
| #endif // DRIVERDEBUG |
| } // cfm_state_change |
| |
| |
| /************************ |
| * |
| * ecm_state_change |
| * |
| * Sets ECM state in custom statistics. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * e_state - Possible values are: |
| * |
| * SC0_ISOLATED, SC1_WRAP_A (5), SC2_WRAP_B (6), SC4_THRU_A (12), |
| * SC5_THRU_B (7), SC7_WRAP_S (8) |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void ecm_state_change(struct s_smc *smc, int e_state) |
| { |
| #ifdef DRIVERDEBUG |
| char *s; |
| |
| switch (e_state) { |
| case EC0_OUT: |
| s = "EC0_OUT"; |
| break; |
| case EC1_IN: |
| s = "EC1_IN"; |
| break; |
| case EC2_TRACE: |
| s = "EC2_TRACE"; |
| break; |
| case EC3_LEAVE: |
| s = "EC3_LEAVE"; |
| break; |
| case EC4_PATH_TEST: |
| s = "EC4_PATH_TEST"; |
| break; |
| case EC5_INSERT: |
| s = "EC5_INSERT"; |
| break; |
| case EC6_CHECK: |
| s = "EC6_CHECK"; |
| break; |
| case EC7_DEINSERT: |
| s = "EC7_DEINSERT"; |
| break; |
| default: |
| s = "unknown"; |
| break; |
| } |
| PRINTK(KERN_INFO "ecm_state_change: %s\n", s); |
| #endif //DRIVERDEBUG |
| } // ecm_state_change |
| |
| |
| /************************ |
| * |
| * rmt_state_change |
| * |
| * Sets RMT state in custom statistics. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * |
| * r_state - Possible values are: |
| * |
| * RM0_ISOLATED, RM1_NON_OP, RM2_RING_OP, RM3_DETECT, |
| * RM4_NON_OP_DUP, RM5_RING_OP_DUP, RM6_DIRECTED, RM7_TRACE |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void rmt_state_change(struct s_smc *smc, int r_state) |
| { |
| #ifdef DRIVERDEBUG |
| char *s; |
| |
| switch (r_state) { |
| case RM0_ISOLATED: |
| s = "RM0_ISOLATED"; |
| break; |
| case RM1_NON_OP: |
| s = "RM1_NON_OP - not operational"; |
| break; |
| case RM2_RING_OP: |
| s = "RM2_RING_OP - ring operational"; |
| break; |
| case RM3_DETECT: |
| s = "RM3_DETECT - detect dupl addresses"; |
| break; |
| case RM4_NON_OP_DUP: |
| s = "RM4_NON_OP_DUP - dupl. addr detected"; |
| break; |
| case RM5_RING_OP_DUP: |
| s = "RM5_RING_OP_DUP - ring oper. with dupl. addr"; |
| break; |
| case RM6_DIRECTED: |
| s = "RM6_DIRECTED - sending directed beacons"; |
| break; |
| case RM7_TRACE: |
| s = "RM7_TRACE - trace initiated"; |
| break; |
| default: |
| s = "unknown"; |
| break; |
| } |
| PRINTK(KERN_INFO "[rmt_state_change: %s]\n", s); |
| #endif // DRIVERDEBUG |
| } // rmt_state_change |
| |
| |
| /************************ |
| * |
| * drv_reset_indication |
| * |
| * This function is called by the SMT when it has detected a severe |
| * hardware problem. The driver should perform a reset on the adapter |
| * as soon as possible, but not from within this function. |
| * Args |
| * smc - A pointer to the SMT context struct. |
| * Out |
| * Nothing. |
| * |
| ************************/ |
| void drv_reset_indication(struct s_smc *smc) |
| { |
| PRINTK(KERN_INFO "entering drv_reset_indication\n"); |
| |
| smc->os.ResetRequested = TRUE; // Set flag. |
| |
| } // drv_reset_indication |
| |
| static struct pci_driver skfddi_pci_driver = { |
| .name = "skfddi", |
| .id_table = skfddi_pci_tbl, |
| .probe = skfp_init_one, |
| .remove = __devexit_p(skfp_remove_one), |
| }; |
| |
| static int __init skfd_init(void) |
| { |
| return pci_register_driver(&skfddi_pci_driver); |
| } |
| |
| static void __exit skfd_exit(void) |
| { |
| pci_unregister_driver(&skfddi_pci_driver); |
| } |
| |
| module_init(skfd_init); |
| module_exit(skfd_exit); |