2249 lines
63 KiB
C
2249 lines
63 KiB
C
/*
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* File Name:
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* skfddi.c
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*
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* Copyright Information:
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* Copyright SysKonnect 1998,1999.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The information in this file is provided "AS IS" without warranty.
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*
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* Abstract:
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* A Linux device driver supporting the SysKonnect FDDI PCI controller
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* familie.
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*
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* Maintainers:
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* CG Christoph Goos (cgoos@syskonnect.de)
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*
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* Contributors:
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* DM David S. Miller
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*
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* Address all question to:
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* linux@syskonnect.de
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*
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* The technical manual for the adapters is available from SysKonnect's
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* web pages: www.syskonnect.com
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* Goto "Support" and search Knowledge Base for "manual".
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*
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* Driver Architecture:
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* The driver architecture is based on the DEC FDDI driver by
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* Lawrence V. Stefani and several ethernet drivers.
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* I also used an existing Windows NT miniport driver.
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* All hardware dependent functions are handled by the SysKonnect
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* Hardware Module.
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* The only headerfiles that are directly related to this source
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* are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h.
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* The others belong to the SysKonnect FDDI Hardware Module and
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* should better not be changed.
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*
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* Modification History:
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* Date Name Description
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* 02-Mar-98 CG Created.
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*
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* 10-Mar-99 CG Support for 2.2.x added.
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* 25-Mar-99 CG Corrected IRQ routing for SMP (APIC)
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* 26-Oct-99 CG Fixed compilation error on 2.2.13
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* 12-Nov-99 CG Source code release
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* 22-Nov-99 CG Included in kernel source.
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* 07-May-00 DM 64 bit fixes, new dma interface
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* 31-Jul-03 DB Audit copy_*_user in skfp_ioctl
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* Daniele Bellucci <bellucda@tiscali.it>
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* 03-Dec-03 SH Convert to PCI device model
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*
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* Compilation options (-Dxxx):
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* DRIVERDEBUG print lots of messages to log file
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* DUMPPACKETS print received/transmitted packets to logfile
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*
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* Tested cpu architectures:
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* - i386
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* - sparc64
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*/
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/* Version information string - should be updated prior to */
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/* each new release!!! */
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#define VERSION "2.07"
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static const char * const boot_msg =
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"SysKonnect FDDI PCI Adapter driver v" VERSION " for\n"
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" SK-55xx/SK-58xx adapters (SK-NET FDDI-FP/UP/LP)";
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/* Include files */
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#include <linux/capability.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/fddidevice.h>
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#include <linux/skbuff.h>
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#include <linux/bitops.h>
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#include <linux/gfp.h>
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#include <asm/byteorder.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include "h/types.h"
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#undef ADDR // undo Linux definition
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#include "h/skfbi.h"
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#include "h/fddi.h"
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#include "h/smc.h"
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#include "h/smtstate.h"
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// Define module-wide (static) routines
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static int skfp_driver_init(struct net_device *dev);
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static int skfp_open(struct net_device *dev);
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static int skfp_close(struct net_device *dev);
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static irqreturn_t skfp_interrupt(int irq, void *dev_id);
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static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev);
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static void skfp_ctl_set_multicast_list(struct net_device *dev);
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static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev);
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static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr);
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static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
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static netdev_tx_t skfp_send_pkt(struct sk_buff *skb,
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struct net_device *dev);
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static void send_queued_packets(struct s_smc *smc);
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static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr);
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static void ResetAdapter(struct s_smc *smc);
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// Functions needed by the hardware module
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void *mac_drv_get_space(struct s_smc *smc, u_int size);
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void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size);
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unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt);
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unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag);
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void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr,
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int flag);
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void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd);
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void llc_restart_tx(struct s_smc *smc);
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void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
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int frag_count, int len);
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void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
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int frag_count);
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void mac_drv_fill_rxd(struct s_smc *smc);
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void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd,
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int frag_count);
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int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead,
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int la_len);
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void dump_data(unsigned char *Data, int length);
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// External functions from the hardware module
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extern u_int mac_drv_check_space(void);
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extern int mac_drv_init(struct s_smc *smc);
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extern void hwm_tx_frag(struct s_smc *smc, char far * virt, u_long phys,
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int len, int frame_status);
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extern int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count,
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int frame_len, int frame_status);
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extern void fddi_isr(struct s_smc *smc);
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extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys,
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int len, int frame_status);
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extern void mac_drv_rx_mode(struct s_smc *smc, int mode);
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extern void mac_drv_clear_rx_queue(struct s_smc *smc);
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extern void enable_tx_irq(struct s_smc *smc, u_short queue);
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static const struct pci_device_id skfddi_pci_tbl[] = {
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{ PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>");
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// Define module-wide (static) variables
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static int num_boards; /* total number of adapters configured */
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static const struct net_device_ops skfp_netdev_ops = {
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.ndo_open = skfp_open,
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.ndo_stop = skfp_close,
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.ndo_start_xmit = skfp_send_pkt,
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.ndo_get_stats = skfp_ctl_get_stats,
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.ndo_change_mtu = fddi_change_mtu,
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.ndo_set_rx_mode = skfp_ctl_set_multicast_list,
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.ndo_set_mac_address = skfp_ctl_set_mac_address,
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.ndo_do_ioctl = skfp_ioctl,
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};
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/*
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* =================
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* = skfp_init_one =
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* =================
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*
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* Overview:
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* Probes for supported FDDI PCI controllers
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*
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* Returns:
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* Condition code
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*
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* Arguments:
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* pdev - pointer to PCI device information
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*
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* Functional Description:
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* This is now called by PCI driver registration process
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* for each board found.
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*
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* Return Codes:
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* 0 - This device (fddi0, fddi1, etc) configured successfully
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* -ENODEV - No devices present, or no SysKonnect FDDI PCI device
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* present for this device name
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*
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*
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* Side Effects:
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* Device structures for FDDI adapters (fddi0, fddi1, etc) are
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* initialized and the board resources are read and stored in
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* the device structure.
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*/
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static int skfp_init_one(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct net_device *dev;
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struct s_smc *smc; /* board pointer */
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void __iomem *mem;
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int err;
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pr_debug("entering skfp_init_one\n");
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if (num_boards == 0)
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printk("%s\n", boot_msg);
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err = pci_enable_device(pdev);
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if (err)
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return err;
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err = pci_request_regions(pdev, "skfddi");
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if (err)
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goto err_out1;
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pci_set_master(pdev);
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#ifdef MEM_MAPPED_IO
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if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
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printk(KERN_ERR "skfp: region is not an MMIO resource\n");
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err = -EIO;
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goto err_out2;
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}
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mem = ioremap(pci_resource_start(pdev, 0), 0x4000);
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#else
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if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) {
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printk(KERN_ERR "skfp: region is not PIO resource\n");
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err = -EIO;
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goto err_out2;
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}
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mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN);
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#endif
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if (!mem) {
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printk(KERN_ERR "skfp: Unable to map register, "
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"FDDI adapter will be disabled.\n");
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err = -EIO;
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goto err_out2;
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}
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dev = alloc_fddidev(sizeof(struct s_smc));
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if (!dev) {
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printk(KERN_ERR "skfp: Unable to allocate fddi device, "
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"FDDI adapter will be disabled.\n");
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err = -ENOMEM;
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goto err_out3;
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}
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dev->irq = pdev->irq;
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dev->netdev_ops = &skfp_netdev_ops;
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SET_NETDEV_DEV(dev, &pdev->dev);
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/* Initialize board structure with bus-specific info */
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smc = netdev_priv(dev);
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smc->os.dev = dev;
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smc->os.bus_type = SK_BUS_TYPE_PCI;
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smc->os.pdev = *pdev;
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smc->os.QueueSkb = MAX_TX_QUEUE_LEN;
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smc->os.MaxFrameSize = MAX_FRAME_SIZE;
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smc->os.dev = dev;
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smc->hw.slot = -1;
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smc->hw.iop = mem;
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smc->os.ResetRequested = FALSE;
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skb_queue_head_init(&smc->os.SendSkbQueue);
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dev->base_addr = (unsigned long)mem;
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err = skfp_driver_init(dev);
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if (err)
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goto err_out4;
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err = register_netdev(dev);
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if (err)
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goto err_out5;
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++num_boards;
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pci_set_drvdata(pdev, dev);
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if ((pdev->subsystem_device & 0xff00) == 0x5500 ||
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(pdev->subsystem_device & 0xff00) == 0x5800)
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printk("%s: SysKonnect FDDI PCI adapter"
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" found (SK-%04X)\n", dev->name,
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pdev->subsystem_device);
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else
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printk("%s: FDDI PCI adapter found\n", dev->name);
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return 0;
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err_out5:
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if (smc->os.SharedMemAddr)
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pci_free_consistent(pdev, smc->os.SharedMemSize,
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smc->os.SharedMemAddr,
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smc->os.SharedMemDMA);
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pci_free_consistent(pdev, MAX_FRAME_SIZE,
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smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA);
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err_out4:
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free_netdev(dev);
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err_out3:
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#ifdef MEM_MAPPED_IO
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iounmap(mem);
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#else
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ioport_unmap(mem);
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#endif
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err_out2:
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pci_release_regions(pdev);
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err_out1:
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pci_disable_device(pdev);
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return err;
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}
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/*
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* Called for each adapter board from pci_unregister_driver
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*/
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static void skfp_remove_one(struct pci_dev *pdev)
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{
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struct net_device *p = pci_get_drvdata(pdev);
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struct s_smc *lp = netdev_priv(p);
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unregister_netdev(p);
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if (lp->os.SharedMemAddr) {
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pci_free_consistent(&lp->os.pdev,
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lp->os.SharedMemSize,
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lp->os.SharedMemAddr,
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lp->os.SharedMemDMA);
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lp->os.SharedMemAddr = NULL;
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}
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if (lp->os.LocalRxBuffer) {
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pci_free_consistent(&lp->os.pdev,
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MAX_FRAME_SIZE,
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lp->os.LocalRxBuffer,
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lp->os.LocalRxBufferDMA);
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lp->os.LocalRxBuffer = NULL;
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}
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#ifdef MEM_MAPPED_IO
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iounmap(lp->hw.iop);
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#else
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ioport_unmap(lp->hw.iop);
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#endif
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pci_release_regions(pdev);
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free_netdev(p);
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pci_disable_device(pdev);
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}
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/*
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* ====================
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* = skfp_driver_init =
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* ====================
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*
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* Overview:
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* Initializes remaining adapter board structure information
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* and makes sure adapter is in a safe state prior to skfp_open().
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*
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* Returns:
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* Condition code
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*
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* Arguments:
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* dev - pointer to device information
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*
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* Functional Description:
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* This function allocates additional resources such as the host memory
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* blocks needed by the adapter.
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* The adapter is also reset. The OS must call skfp_open() to open
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* the adapter and bring it on-line.
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*
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* Return Codes:
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* 0 - initialization succeeded
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* -1 - initialization failed
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*/
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static int skfp_driver_init(struct net_device *dev)
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{
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struct s_smc *smc = netdev_priv(dev);
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skfddi_priv *bp = &smc->os;
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int err = -EIO;
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pr_debug("entering skfp_driver_init\n");
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// set the io address in private structures
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bp->base_addr = dev->base_addr;
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// Get the interrupt level from the PCI Configuration Table
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smc->hw.irq = dev->irq;
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spin_lock_init(&bp->DriverLock);
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// Allocate invalid frame
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bp->LocalRxBuffer = pci_alloc_consistent(&bp->pdev, MAX_FRAME_SIZE, &bp->LocalRxBufferDMA);
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if (!bp->LocalRxBuffer) {
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printk("could not allocate mem for ");
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printk("LocalRxBuffer: %d byte\n", MAX_FRAME_SIZE);
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goto fail;
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}
|
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|
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// Determine the required size of the 'shared' memory area.
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bp->SharedMemSize = mac_drv_check_space();
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pr_debug("Memory for HWM: %ld\n", bp->SharedMemSize);
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if (bp->SharedMemSize > 0) {
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bp->SharedMemSize += 16; // for descriptor alignment
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|
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bp->SharedMemAddr = pci_alloc_consistent(&bp->pdev,
|
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bp->SharedMemSize,
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&bp->SharedMemDMA);
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if (!bp->SharedMemAddr) {
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printk("could not allocate mem for ");
|
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printk("hardware module: %ld byte\n",
|
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bp->SharedMemSize);
|
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goto fail;
|
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}
|
|
bp->SharedMemHeap = 0; // Nothing used yet.
|
|
|
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} else {
|
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bp->SharedMemAddr = NULL;
|
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bp->SharedMemHeap = 0;
|
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} // SharedMemSize > 0
|
|
|
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memset(bp->SharedMemAddr, 0, bp->SharedMemSize);
|
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|
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card_stop(smc); // Reset adapter.
|
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|
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pr_debug("mac_drv_init()..\n");
|
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if (mac_drv_init(smc) != 0) {
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pr_debug("mac_drv_init() failed\n");
|
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goto fail;
|
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}
|
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read_address(smc, NULL);
|
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pr_debug("HW-Addr: %pMF\n", smc->hw.fddi_canon_addr.a);
|
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memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, ETH_ALEN);
|
|
|
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smt_reset_defaults(smc, 0);
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|
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return 0;
|
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|
|
fail:
|
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if (bp->SharedMemAddr) {
|
|
pci_free_consistent(&bp->pdev,
|
|
bp->SharedMemSize,
|
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bp->SharedMemAddr,
|
|
bp->SharedMemDMA);
|
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bp->SharedMemAddr = NULL;
|
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}
|
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if (bp->LocalRxBuffer) {
|
|
pci_free_consistent(&bp->pdev, MAX_FRAME_SIZE,
|
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bp->LocalRxBuffer, bp->LocalRxBufferDMA);
|
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bp->LocalRxBuffer = NULL;
|
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}
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return err;
|
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} // 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)
|
|
{
|
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struct s_smc *smc = netdev_priv(dev);
|
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int err;
|
|
|
|
pr_debug("entering skfp_open\n");
|
|
/* Register IRQ - support shared interrupts by passing device ptr */
|
|
err = request_irq(dev->irq, skfp_interrupt, IRQF_SHARED,
|
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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, ETH_ALEN);
|
|
|
|
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.
|
|
*/
|
|
|
|
static irqreturn_t skfp_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct s_smc *smc; /* private board structure pointer */
|
|
skfddi_priv *bp;
|
|
|
|
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.
|
|
*
|
|
*/
|
|
static 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);
|
|
} // 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 netdev_hw_addr *ha;
|
|
|
|
/* Enable promiscuous mode, if necessary */
|
|
if (dev->flags & IFF_PROMISC) {
|
|
mac_drv_rx_mode(smc, RX_ENABLE_PROMISC);
|
|
pr_debug("PROMISCUOUS MODE ENABLED\n");
|
|
}
|
|
/* Else, update multicast address table */
|
|
else {
|
|
mac_drv_rx_mode(smc, RX_DISABLE_PROMISC);
|
|
pr_debug("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);
|
|
pr_debug("ENABLE ALL MC ADDRESSES\n");
|
|
} else if (!netdev_mc_empty(dev)) {
|
|
if (netdev_mc_count(dev) <= FPMAX_MULTICAST) {
|
|
/* use exact filtering */
|
|
|
|
// point to first multicast addr
|
|
netdev_for_each_mc_addr(ha, dev) {
|
|
mac_add_multicast(smc,
|
|
(struct fddi_addr *)ha->addr,
|
|
1);
|
|
|
|
pr_debug("ENABLE MC ADDRESS: %pMF\n",
|
|
ha->addr);
|
|
}
|
|
|
|
} else { // more MC addresses than HW supports
|
|
|
|
mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI);
|
|
pr_debug("ENABLE ALL MC ADDRESSES\n");
|
|
}
|
|
} else { // no MC addresses
|
|
|
|
pr_debug("DISABLE ALL MC ADDRESSES\n");
|
|
}
|
|
|
|
/* Update adapter filters */
|
|
mac_update_multicast(smc);
|
|
}
|
|
} // 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)) {
|
|
status = -EPERM;
|
|
} else {
|
|
memset(&lp->MacStat, 0, sizeof(lp->MacStat));
|
|
}
|
|
break;
|
|
default:
|
|
printk("ioctl for %s: unknown 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 netdev_tx_t skfp_send_pkt(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct s_smc *smc = netdev_priv(dev);
|
|
skfddi_priv *bp = &smc->os;
|
|
|
|
pr_debug("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 NETDEV_TX_OK; /* return "success" */
|
|
}
|
|
if (bp->QueueSkb == 0) { // return with tbusy set: queue full
|
|
|
|
netif_stop_queue(dev);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
bp->QueueSkb--;
|
|
skb_queue_tail(&bp->SendSkbQueue, skb);
|
|
send_queued_packets(netdev_priv(dev));
|
|
if (bp->QueueSkb == 0) {
|
|
netif_stop_queue(dev);
|
|
}
|
|
return NETDEV_TX_OK;
|
|
|
|
} // 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.
|
|
|
|
pr_debug("send queued packets\n");
|
|
for (;;) {
|
|
// send first buffer from queue
|
|
skb = skb_dequeue(&bp->SendSkbQueue);
|
|
|
|
if (!skb) {
|
|
pr_debug("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.
|
|
pr_debug("Tx attempt while ring down.\n");
|
|
} else if ((frame_status & OUT_OF_TXD) != 0) {
|
|
pr_debug("%s: out of TXDs.\n", bp->dev->name);
|
|
} else {
|
|
pr_debug("%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.
|
|
*
|
|
************************/
|
|
static 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, ETH_ALEN);
|
|
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)
|
|
{
|
|
|
|
pr_debug("[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;
|
|
|
|
pr_debug("[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;
|
|
|
|
pr_debug("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.
|
|
|
|
pr_debug("mac_drv_get_space end\n");
|
|
pr_debug("virt addr: %lx\n", (ulong) virt);
|
|
pr_debug("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;
|
|
|
|
pr_debug("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;
|
|
|
|
pr_debug("Allocate %u bytes alignment gap ", size);
|
|
pr_debug("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;
|
|
|
|
pr_debug("entering mac_drv_tx_complete\n");
|
|
// Check if this TxD points to a skb
|
|
|
|
if (!(skb = txd->txd_os.skb)) {
|
|
pr_debug("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);
|
|
|
|
pr_debug("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;
|
|
|
|
pr_debug("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) {
|
|
pr_debug("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
|
|
pr_debug("RIF found\n");
|
|
// Get RIF length from Routing Control (RC) field.
|
|
cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header.
|
|
|
|
ri = ntohs(*((__be16 *) 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);
|
|
|
|
netif_rx(skb);
|
|
|
|
HWM_RX_CHECK(smc, RX_LOW_WATERMARK);
|
|
return;
|
|
|
|
RequeueRxd:
|
|
pr_debug("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
|
|
|
|
pr_debug("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
|
|
pr_debug("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;
|
|
|
|
pr_debug("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) {
|
|
pr_debug(".\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.
|
|
pr_debug("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);
|
|
}
|
|
pr_debug("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;
|
|
|
|
pr_debug("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;
|
|
|
|
pr_debug("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) {
|
|
pr_debug("fddi: Discard invalid local SMT frame\n");
|
|
pr_debug(" 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) {
|
|
pr_debug("fddi: Local SMT: skb memory exhausted.\n");
|
|
return 0;
|
|
}
|
|
skb_reserve(skb, 3);
|
|
skb_put(skb, len);
|
|
skb_copy_to_linear_data(skb, look_ahead, len);
|
|
|
|
// deliver frame to system
|
|
skb->protocol = fddi_type_trans(skb, smc->os.dev);
|
|
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)
|
|
{
|
|
pr_debug("ring_status_indication( ");
|
|
if (status & RS_RES15)
|
|
pr_debug("RS_RES15 ");
|
|
if (status & RS_HARDERROR)
|
|
pr_debug("RS_HARDERROR ");
|
|
if (status & RS_SOFTERROR)
|
|
pr_debug("RS_SOFTERROR ");
|
|
if (status & RS_BEACON)
|
|
pr_debug("RS_BEACON ");
|
|
if (status & RS_PATHTEST)
|
|
pr_debug("RS_PATHTEST ");
|
|
if (status & RS_SELFTEST)
|
|
pr_debug("RS_SELFTEST ");
|
|
if (status & RS_RES9)
|
|
pr_debug("RS_RES9 ");
|
|
if (status & RS_DISCONNECT)
|
|
pr_debug("RS_DISCONNECT ");
|
|
if (status & RS_RES7)
|
|
pr_debug("RS_RES7 ");
|
|
if (status & RS_DUPADDR)
|
|
pr_debug("RS_DUPADDR ");
|
|
if (status & RS_NORINGOP)
|
|
pr_debug("RS_NORINGOP ");
|
|
if (status & RS_VERSION)
|
|
pr_debug("RS_VERSION ");
|
|
if (status & RS_STUCKBYPASSS)
|
|
pr_debug("RS_STUCKBYPASSS ");
|
|
if (status & RS_EVENT)
|
|
pr_debug("RS_EVENT ");
|
|
if (status & RS_RINGOPCHANGE)
|
|
pr_debug("RS_RINGOPCHANGE ");
|
|
if (status & RS_RES0)
|
|
pr_debug("RS_RES0 ");
|
|
pr_debug("]\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 ;
|
|
|
|
pr_debug("smt_stat_counter\n");
|
|
switch (stat) {
|
|
case 0:
|
|
pr_debug("Ring operational change.\n");
|
|
break;
|
|
case 1:
|
|
pr_debug("Receive fifo overflow.\n");
|
|
smc->os.MacStat.gen.rx_errors++;
|
|
break;
|
|
default:
|
|
pr_debug("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:
|
|
pr_debug("cfm_state_change: unknown %d\n", c_state);
|
|
return;
|
|
}
|
|
pr_debug("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;
|
|
}
|
|
pr_debug("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;
|
|
}
|
|
pr_debug("[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)
|
|
{
|
|
pr_debug("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 = skfp_remove_one,
|
|
};
|
|
|
|
module_pci_driver(skfddi_pci_driver);
|