![Adrian Bunk](/assets/img/avatar_default.png)
This patch contains the follwing cleanups: - make needlessly global code static - remove obsolete Emacs settings Signed-off-by: Adrian Bunk <bunk@stusta.de>
2400 lines
63 KiB
C
2400 lines
63 KiB
C
/*
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* tms380tr.c: A network driver library for Texas Instruments TMS380-based
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* Token Ring Adapters.
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*
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* Originally sktr.c: Written 1997 by Christoph Goos
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*
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* A fine result of the Linux Systems Network Architecture Project.
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* http://www.linux-sna.org
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* The following modules are currently available for card support:
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* - tmspci (Generic PCI card support)
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* - abyss (Madge PCI support)
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* - tmsisa (SysKonnect TR4/16 ISA)
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*
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* Sources:
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* - The hardware related parts of this driver are take from
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* the SysKonnect Token Ring driver for Windows NT.
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* - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
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* driver, as well as the 'skeleton.c' driver by Donald Becker.
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* - Also various other drivers in the linux source tree were taken
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* as samples for some tasks.
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* - TI TMS380 Second-Generation Token Ring User's Guide
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* - TI datasheets for respective chips
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* - David Hein at Texas Instruments
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* - Various Madge employees
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*
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* Maintainer(s):
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* JS Jay Schulist jschlst@samba.org
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* CG Christoph Goos cgoos@syskonnect.de
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* AF Adam Fritzler mid@auk.cx
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* MLP Mike Phillips phillim@amtrak.com
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* JF Jochen Friedrich jochen@scram.de
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*
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* Modification History:
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* 29-Aug-97 CG Created
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* 04-Apr-98 CG Fixed problems caused by tok_timer_check
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* 10-Apr-98 CG Fixed lockups at cable disconnection
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* 27-May-98 JS Formated to Linux Kernel Format
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* 31-May-98 JS Hacked in PCI support
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* 16-Jun-98 JS Modulized for multiple cards with one driver
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* Sep-99 AF Renamed to tms380tr (supports more than SK's)
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* 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support
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* Fixed a bug causing double copies on PCI
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* Fixed for new multicast stuff (2.2/2.3)
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* 25-Sep-99 AF Uped TPL_NUM from 3 to 9
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* Removed extraneous 'No free TPL'
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* 22-Dec-99 AF Added Madge PCI Mk2 support and generalized
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* parts of the initilization procedure.
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* 30-Dec-99 AF Turned tms380tr into a library ala 8390.
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* Madge support is provided in the abyss module
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* Generic PCI support is in the tmspci module.
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* 30-Nov-00 JF Updated PCI code to support IO MMU via
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* pci_map_static(). Alpha uses this MMU for ISA
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* as well.
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* 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some
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* cleanup.
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* 13-Jan-02 JF Add spinlock to fix race condition.
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* 09-Nov-02 JF Fixed printks to not SPAM the console during
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* normal operation.
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* 30-Dec-02 JF Removed incorrect __init from
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* tms380tr_init_card.
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*
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* To do:
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* 1. Multi/Broadcast packet handling (this may have fixed itself)
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* 2. Write a sktrisa module that includes the old ISA support (done)
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* 3. Allow modules to load their own microcode
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* 4. Speed up the BUD process -- freezing the kernel for 3+sec is
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* quite unacceptable.
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* 5. Still a few remaining stalls when the cable is unplugged.
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*/
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#ifdef MODULE
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static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
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#endif
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/time.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/trdevice.h>
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#include <linux/firmware.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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#include "tms380tr.h" /* Our Stuff */
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/* Use 0 for production, 1 for verification, 2 for debug, and
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* 3 for very verbose debug.
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*/
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#ifndef TMS380TR_DEBUG
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#define TMS380TR_DEBUG 0
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#endif
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static unsigned int tms380tr_debug = TMS380TR_DEBUG;
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static struct device tms_device;
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/* Index to functions, as function prototypes.
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* Alphabetical by function name.
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*/
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/* "A" */
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/* "B" */
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static int tms380tr_bringup_diags(struct net_device *dev);
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/* "C" */
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static void tms380tr_cancel_tx_queue(struct net_local* tp);
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static int tms380tr_chipset_init(struct net_device *dev);
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static void tms380tr_chk_irq(struct net_device *dev);
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static void tms380tr_chk_outstanding_cmds(struct net_device *dev);
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static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
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static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
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int tms380tr_close(struct net_device *dev);
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static void tms380tr_cmd_status_irq(struct net_device *dev);
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/* "D" */
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static void tms380tr_disable_interrupts(struct net_device *dev);
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#if TMS380TR_DEBUG > 0
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static void tms380tr_dump(unsigned char *Data, int length);
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#endif
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/* "E" */
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static void tms380tr_enable_interrupts(struct net_device *dev);
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static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
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static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
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/* "F" */
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/* "G" */
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static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
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/* "H" */
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static int tms380tr_hardware_send_packet(struct sk_buff *skb,
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struct net_device *dev);
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/* "I" */
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static int tms380tr_init_adapter(struct net_device *dev);
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static void tms380tr_init_ipb(struct net_local *tp);
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static void tms380tr_init_net_local(struct net_device *dev);
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static void tms380tr_init_opb(struct net_device *dev);
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/* "M" */
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/* "O" */
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int tms380tr_open(struct net_device *dev);
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static void tms380tr_open_adapter(struct net_device *dev);
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/* "P" */
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/* "R" */
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static void tms380tr_rcv_status_irq(struct net_device *dev);
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static int tms380tr_read_ptr(struct net_device *dev);
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static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
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unsigned short Address, int Length);
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static int tms380tr_reset_adapter(struct net_device *dev);
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static void tms380tr_reset_interrupt(struct net_device *dev);
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static void tms380tr_ring_status_irq(struct net_device *dev);
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/* "S" */
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static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev);
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static void tms380tr_set_multicast_list(struct net_device *dev);
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static int tms380tr_set_mac_address(struct net_device *dev, void *addr);
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/* "T" */
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static void tms380tr_timer_chk(unsigned long data);
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static void tms380tr_timer_end_wait(unsigned long data);
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static void tms380tr_tx_status_irq(struct net_device *dev);
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/* "U" */
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static void tms380tr_update_rcv_stats(struct net_local *tp,
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unsigned char DataPtr[], unsigned int Length);
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/* "W" */
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void tms380tr_wait(unsigned long time);
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static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
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static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
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#define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg))
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#define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg))
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#define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg))
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#define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg))
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#if 0 /* TMS380TR_DEBUG > 0 */
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static int madgemc_sifprobe(struct net_device *dev)
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{
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unsigned char old, chk1, chk2;
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old = SIFREADB(SIFADR); /* Get the old SIFADR value */
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chk1 = 0; /* Begin with check value 0 */
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do {
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madgemc_setregpage(dev, 0);
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/* Write new SIFADR value */
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SIFWRITEB(chk1, SIFADR);
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chk2 = SIFREADB(SIFADR);
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if (chk2 != chk1)
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return -1;
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madgemc_setregpage(dev, 1);
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/* Read, invert and write */
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chk2 = SIFREADB(SIFADD);
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if (chk2 != chk1)
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return -1;
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madgemc_setregpage(dev, 0);
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chk2 ^= 0x0FE;
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SIFWRITEB(chk2, SIFADR);
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/* Read, invert and compare */
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madgemc_setregpage(dev, 1);
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chk2 = SIFREADB(SIFADD);
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madgemc_setregpage(dev, 0);
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chk2 ^= 0x0FE;
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if(chk1 != chk2)
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return (-1); /* No adapter */
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chk1 -= 2;
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} while(chk1 != 0); /* Repeat 128 times (all byte values) */
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madgemc_setregpage(dev, 0); /* sanity */
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/* Restore the SIFADR value */
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SIFWRITEB(old, SIFADR);
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return (0);
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}
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#endif
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/*
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* Open/initialize the board. This is called sometime after
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* booting when the 'ifconfig' program is run.
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*
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* This routine should set everything up anew at each open, even
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* registers that "should" only need to be set once at boot, so that
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* there is non-reboot way to recover if something goes wrong.
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*/
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int tms380tr_open(struct net_device *dev)
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{
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struct net_local *tp = netdev_priv(dev);
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int err;
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/* init the spinlock */
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spin_lock_init(&tp->lock);
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init_timer(&tp->timer);
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/* Reset the hardware here. Don't forget to set the station address. */
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#ifdef CONFIG_ISA
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if(dev->dma > 0)
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{
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unsigned long flags=claim_dma_lock();
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disable_dma(dev->dma);
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set_dma_mode(dev->dma, DMA_MODE_CASCADE);
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enable_dma(dev->dma);
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release_dma_lock(flags);
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}
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#endif
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err = tms380tr_chipset_init(dev);
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if(err)
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{
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printk(KERN_INFO "%s: Chipset initialization error\n",
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dev->name);
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return (-1);
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}
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tp->timer.expires = jiffies + 30*HZ;
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tp->timer.function = tms380tr_timer_end_wait;
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tp->timer.data = (unsigned long)dev;
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add_timer(&tp->timer);
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printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
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dev->name, tms380tr_read_ptr(dev));
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tms380tr_enable_interrupts(dev);
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tms380tr_open_adapter(dev);
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netif_start_queue(dev);
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/* Wait for interrupt from hardware. If interrupt does not come,
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* there will be a timeout from the timer.
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*/
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tp->Sleeping = 1;
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interruptible_sleep_on(&tp->wait_for_tok_int);
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del_timer(&tp->timer);
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/* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
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if(tp->AdapterVirtOpenFlag == 0)
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{
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tms380tr_disable_interrupts(dev);
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return (-1);
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}
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tp->StartTime = jiffies;
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/* Start function control timer */
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tp->timer.expires = jiffies + 2*HZ;
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tp->timer.function = tms380tr_timer_chk;
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tp->timer.data = (unsigned long)dev;
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add_timer(&tp->timer);
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return (0);
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}
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/*
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* Timeout function while waiting for event
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*/
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static void tms380tr_timer_end_wait(unsigned long data)
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{
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struct net_device *dev = (struct net_device*)data;
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struct net_local *tp = netdev_priv(dev);
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if(tp->Sleeping)
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{
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tp->Sleeping = 0;
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wake_up_interruptible(&tp->wait_for_tok_int);
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}
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return;
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}
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/*
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* Initialize the chipset
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*/
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static int tms380tr_chipset_init(struct net_device *dev)
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{
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struct net_local *tp = netdev_priv(dev);
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int err;
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tms380tr_init_ipb(tp);
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tms380tr_init_opb(dev);
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tms380tr_init_net_local(dev);
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if(tms380tr_debug > 3)
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printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
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err = tms380tr_reset_adapter(dev);
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if(err < 0)
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return (-1);
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if(tms380tr_debug > 3)
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printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
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err = tms380tr_bringup_diags(dev);
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if(err < 0)
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return (-1);
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if(tms380tr_debug > 3)
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printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
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err = tms380tr_init_adapter(dev);
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if(err < 0)
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return (-1);
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if(tms380tr_debug > 3)
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printk(KERN_DEBUG "%s: Done!\n", dev->name);
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return (0);
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}
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/*
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* Initializes the net_local structure.
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*/
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static void tms380tr_init_net_local(struct net_device *dev)
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{
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struct net_local *tp = netdev_priv(dev);
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int i;
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dma_addr_t dmabuf;
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tp->scb.CMD = 0;
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tp->scb.Parm[0] = 0;
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tp->scb.Parm[1] = 0;
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tp->ssb.STS = 0;
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tp->ssb.Parm[0] = 0;
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tp->ssb.Parm[1] = 0;
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tp->ssb.Parm[2] = 0;
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tp->CMDqueue = 0;
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tp->AdapterOpenFlag = 0;
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tp->AdapterVirtOpenFlag = 0;
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tp->ScbInUse = 0;
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tp->OpenCommandIssued = 0;
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tp->ReOpenInProgress = 0;
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tp->HaltInProgress = 0;
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tp->TransmitHaltScheduled = 0;
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tp->LobeWireFaultLogged = 0;
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tp->LastOpenStatus = 0;
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tp->MaxPacketSize = DEFAULT_PACKET_SIZE;
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/* Create circular chain of transmit lists */
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for (i = 0; i < TPL_NUM; i++)
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{
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tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
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tp->Tpl[i].Status = 0;
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tp->Tpl[i].FrameSize = 0;
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tp->Tpl[i].FragList[0].DataCount = 0;
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tp->Tpl[i].FragList[0].DataAddr = 0;
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tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM];
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tp->Tpl[i].MData = NULL;
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tp->Tpl[i].TPLIndex = i;
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tp->Tpl[i].DMABuff = 0;
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tp->Tpl[i].BusyFlag = 0;
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}
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tp->TplFree = tp->TplBusy = &tp->Tpl[0];
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/* Create circular chain of receive lists */
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for (i = 0; i < RPL_NUM; i++)
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{
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tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
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tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
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tp->Rpl[i].FrameSize = 0;
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tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
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/* Alloc skb and point adapter to data area */
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tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
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tp->Rpl[i].DMABuff = 0;
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/* skb == NULL ? then use local buffer */
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if(tp->Rpl[i].Skb == NULL)
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{
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tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
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tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
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tp->Rpl[i].MData = tp->LocalRxBuffers[i];
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}
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else /* SKB != NULL */
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{
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tp->Rpl[i].Skb->dev = dev;
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skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
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/* data unreachable for DMA ? then use local buffer */
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dmabuf = pci_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
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if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
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{
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tp->Rpl[i].SkbStat = SKB_DATA_COPY;
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tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
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tp->Rpl[i].MData = tp->LocalRxBuffers[i];
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}
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else /* DMA directly in skb->data */
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{
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tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
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tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
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tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
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tp->Rpl[i].DMABuff = dmabuf;
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}
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}
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|
|
|
tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
|
|
tp->Rpl[i].RPLIndex = i;
|
|
}
|
|
|
|
tp->RplHead = &tp->Rpl[0];
|
|
tp->RplTail = &tp->Rpl[RPL_NUM-1];
|
|
tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Initializes the initialisation parameter block.
|
|
*/
|
|
static void tms380tr_init_ipb(struct net_local *tp)
|
|
{
|
|
tp->ipb.Init_Options = BURST_MODE;
|
|
tp->ipb.CMD_Status_IV = 0;
|
|
tp->ipb.TX_IV = 0;
|
|
tp->ipb.RX_IV = 0;
|
|
tp->ipb.Ring_Status_IV = 0;
|
|
tp->ipb.SCB_Clear_IV = 0;
|
|
tp->ipb.Adapter_CHK_IV = 0;
|
|
tp->ipb.RX_Burst_Size = BURST_SIZE;
|
|
tp->ipb.TX_Burst_Size = BURST_SIZE;
|
|
tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
|
|
tp->ipb.SCB_Addr = 0;
|
|
tp->ipb.SSB_Addr = 0;
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Initializes the open parameter block.
|
|
*/
|
|
static void tms380tr_init_opb(struct net_device *dev)
|
|
{
|
|
struct net_local *tp;
|
|
unsigned long Addr;
|
|
unsigned short RplSize = RPL_SIZE;
|
|
unsigned short TplSize = TPL_SIZE;
|
|
unsigned short BufferSize = BUFFER_SIZE;
|
|
int i;
|
|
|
|
tp = netdev_priv(dev);
|
|
|
|
tp->ocpl.OPENOptions = 0;
|
|
tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION;
|
|
tp->ocpl.FullDuplex = 0;
|
|
tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF;
|
|
|
|
/*
|
|
* Set node address
|
|
*
|
|
* We go ahead and put it in the OPB even though on
|
|
* most of the generic adapters this isn't required.
|
|
* Its simpler this way. -- ASF
|
|
*/
|
|
for (i=0;i<6;i++)
|
|
tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
|
|
|
|
tp->ocpl.GroupAddr = 0;
|
|
tp->ocpl.FunctAddr = 0;
|
|
tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize);
|
|
tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize);
|
|
tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize);
|
|
tp->ocpl.Reserved = 0;
|
|
tp->ocpl.TXBufMin = TX_BUF_MIN;
|
|
tp->ocpl.TXBufMax = TX_BUF_MAX;
|
|
|
|
Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
|
|
|
|
tp->ocpl.ProdIDAddr[0] = LOWORD(Addr);
|
|
tp->ocpl.ProdIDAddr[1] = HIWORD(Addr);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Send OPEN command to adapter
|
|
*/
|
|
static void tms380tr_open_adapter(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
if(tp->OpenCommandIssued)
|
|
return;
|
|
|
|
tp->OpenCommandIssued = 1;
|
|
tms380tr_exec_cmd(dev, OC_OPEN);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Clear the adapter's interrupt flag. Clear system interrupt enable
|
|
* (SINTEN): disable adapter to system interrupts.
|
|
*/
|
|
static void tms380tr_disable_interrupts(struct net_device *dev)
|
|
{
|
|
SIFWRITEB(0, SIFACL);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set the adapter's interrupt flag. Set system interrupt enable
|
|
* (SINTEN): enable adapter to system interrupts.
|
|
*/
|
|
static void tms380tr_enable_interrupts(struct net_device *dev)
|
|
{
|
|
SIFWRITEB(ACL_SINTEN, SIFACL);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Put command in command queue, try to execute it.
|
|
*/
|
|
static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
tp->CMDqueue |= Command;
|
|
tms380tr_chk_outstanding_cmds(dev);
|
|
|
|
return;
|
|
}
|
|
|
|
static void tms380tr_timeout(struct net_device *dev)
|
|
{
|
|
/*
|
|
* If we get here, some higher level has decided we are broken.
|
|
* There should really be a "kick me" function call instead.
|
|
*
|
|
* Resetting the token ring adapter takes a long time so just
|
|
* fake transmission time and go on trying. Our own timeout
|
|
* routine is in tms380tr_timer_chk()
|
|
*/
|
|
dev->trans_start = jiffies;
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
/*
|
|
* Gets skb from system, queues it and checks if it can be sent
|
|
*/
|
|
static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
int err;
|
|
|
|
err = tms380tr_hardware_send_packet(skb, dev);
|
|
if(tp->TplFree->NextTPLPtr->BusyFlag)
|
|
netif_stop_queue(dev);
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Move frames into adapter tx queue
|
|
*/
|
|
static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
TPL *tpl;
|
|
short length;
|
|
unsigned char *buf;
|
|
unsigned long flags;
|
|
int i;
|
|
dma_addr_t dmabuf, newbuf;
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
/* Try to get a free TPL from the chain.
|
|
*
|
|
* NOTE: We *must* always leave one unused TPL in the chain,
|
|
* because otherwise the adapter might send frames twice.
|
|
*/
|
|
spin_lock_irqsave(&tp->lock, flags);
|
|
if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */
|
|
if (tms380tr_debug > 0)
|
|
printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
|
|
spin_unlock_irqrestore(&tp->lock, flags);
|
|
return 1;
|
|
}
|
|
|
|
dmabuf = 0;
|
|
|
|
/* Is buffer reachable for Busmaster-DMA? */
|
|
|
|
length = skb->len;
|
|
dmabuf = pci_map_single(tp->pdev, skb->data, length, PCI_DMA_TODEVICE);
|
|
if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
|
|
/* Copy frame to local buffer */
|
|
pci_unmap_single(tp->pdev, dmabuf, length, PCI_DMA_TODEVICE);
|
|
dmabuf = 0;
|
|
i = tp->TplFree->TPLIndex;
|
|
buf = tp->LocalTxBuffers[i];
|
|
memcpy(buf, skb->data, length);
|
|
newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer;
|
|
}
|
|
else {
|
|
/* Send direct from skb->data */
|
|
newbuf = dmabuf;
|
|
buf = skb->data;
|
|
}
|
|
/* Source address in packet? */
|
|
tms380tr_chk_src_addr(buf, dev->dev_addr);
|
|
tp->LastSendTime = jiffies;
|
|
tpl = tp->TplFree; /* Get the "free" TPL */
|
|
tpl->BusyFlag = 1; /* Mark TPL as busy */
|
|
tp->TplFree = tpl->NextTPLPtr;
|
|
|
|
/* Save the skb for delayed return of skb to system */
|
|
tpl->Skb = skb;
|
|
tpl->DMABuff = dmabuf;
|
|
tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
|
|
tpl->FragList[0].DataAddr = htonl(newbuf);
|
|
|
|
/* Write the data length in the transmit list. */
|
|
tpl->FrameSize = cpu_to_be16((unsigned short)length);
|
|
tpl->MData = buf;
|
|
|
|
/* Transmit the frame and set the status values. */
|
|
tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
|
|
| TX_END_FRAME | TX_PASS_SRC_ADDR
|
|
| TX_FRAME_IRQ);
|
|
|
|
/* Let adapter send the frame. */
|
|
tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
|
|
spin_unlock_irqrestore(&tp->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Write the given value to the 'Status' field of the specified TPL.
|
|
* NOTE: This function should be used whenever the status of any TPL must be
|
|
* modified by the driver, because the compiler may otherwise change the
|
|
* order of instructions such that writing the TPL status may be executed at
|
|
* an undesireable time. When this function is used, the status is always
|
|
* written when the function is called.
|
|
*/
|
|
static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
|
|
{
|
|
tpl->Status = Status;
|
|
}
|
|
|
|
static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
|
|
{
|
|
unsigned char SRBit;
|
|
|
|
if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */
|
|
return;
|
|
if((unsigned short)frame[12] != 0) /* Compare 2 bytes */
|
|
return;
|
|
|
|
SRBit = frame[8] & 0x80;
|
|
memcpy(&frame[8], hw_addr, 6);
|
|
frame[8] |= SRBit;
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The timer routine: Check if adapter still open and working, reopen if not.
|
|
*/
|
|
static void tms380tr_timer_chk(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device*)data;
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
if(tp->HaltInProgress)
|
|
return;
|
|
|
|
tms380tr_chk_outstanding_cmds(dev);
|
|
if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
|
|
&& (tp->TplFree != tp->TplBusy))
|
|
{
|
|
/* Anything to send, but stalled too long */
|
|
tp->LastSendTime = jiffies;
|
|
tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */
|
|
}
|
|
|
|
tp->timer.expires = jiffies + 2*HZ;
|
|
add_timer(&tp->timer);
|
|
|
|
if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
|
|
return;
|
|
tp->ReOpenInProgress = 1;
|
|
tms380tr_open_adapter(dev);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The typical workload of the driver: Handle the network interface interrupts.
|
|
*/
|
|
irqreturn_t tms380tr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct net_local *tp;
|
|
unsigned short irq_type;
|
|
int handled = 0;
|
|
|
|
if(dev == NULL) {
|
|
printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
tp = netdev_priv(dev);
|
|
|
|
irq_type = SIFREADW(SIFSTS);
|
|
|
|
while(irq_type & STS_SYSTEM_IRQ) {
|
|
handled = 1;
|
|
irq_type &= STS_IRQ_MASK;
|
|
|
|
if(!tms380tr_chk_ssb(tp, irq_type)) {
|
|
printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
|
|
break;
|
|
}
|
|
|
|
switch(irq_type) {
|
|
case STS_IRQ_RECEIVE_STATUS:
|
|
tms380tr_reset_interrupt(dev);
|
|
tms380tr_rcv_status_irq(dev);
|
|
break;
|
|
|
|
case STS_IRQ_TRANSMIT_STATUS:
|
|
/* Check if TRANSMIT.HALT command is complete */
|
|
if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
|
|
tp->TransmitCommandActive = 0;
|
|
tp->TransmitHaltScheduled = 0;
|
|
|
|
/* Issue a new transmit command. */
|
|
tms380tr_exec_cmd(dev, OC_TRANSMIT);
|
|
}
|
|
|
|
tms380tr_reset_interrupt(dev);
|
|
tms380tr_tx_status_irq(dev);
|
|
break;
|
|
|
|
case STS_IRQ_COMMAND_STATUS:
|
|
/* The SSB contains status of last command
|
|
* other than receive/transmit.
|
|
*/
|
|
tms380tr_cmd_status_irq(dev);
|
|
break;
|
|
|
|
case STS_IRQ_SCB_CLEAR:
|
|
/* The SCB is free for another command. */
|
|
tp->ScbInUse = 0;
|
|
tms380tr_chk_outstanding_cmds(dev);
|
|
break;
|
|
|
|
case STS_IRQ_RING_STATUS:
|
|
tms380tr_ring_status_irq(dev);
|
|
break;
|
|
|
|
case STS_IRQ_ADAPTER_CHECK:
|
|
tms380tr_chk_irq(dev);
|
|
break;
|
|
|
|
case STS_IRQ_LLC_STATUS:
|
|
printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
|
|
break;
|
|
|
|
case STS_IRQ_TIMER:
|
|
printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
|
|
break;
|
|
|
|
case STS_IRQ_RECEIVE_PENDING:
|
|
printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
|
|
break;
|
|
}
|
|
|
|
/* Reset system interrupt if not already done. */
|
|
if(irq_type != STS_IRQ_TRANSMIT_STATUS
|
|
&& irq_type != STS_IRQ_RECEIVE_STATUS) {
|
|
tms380tr_reset_interrupt(dev);
|
|
}
|
|
|
|
irq_type = SIFREADW(SIFSTS);
|
|
}
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
/*
|
|
* Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
|
|
*/
|
|
static void tms380tr_reset_interrupt(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
SSB *ssb = &tp->ssb;
|
|
|
|
/*
|
|
* [Workaround for "Data Late"]
|
|
* Set all fields of the SSB to well-defined values so we can
|
|
* check if the adapter has written the SSB.
|
|
*/
|
|
|
|
ssb->STS = (unsigned short) -1;
|
|
ssb->Parm[0] = (unsigned short) -1;
|
|
ssb->Parm[1] = (unsigned short) -1;
|
|
ssb->Parm[2] = (unsigned short) -1;
|
|
|
|
/* Free SSB by issuing SSB_CLEAR command after reading IRQ code
|
|
* and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
|
|
*/
|
|
tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Check if the SSB has actually been written by the adapter.
|
|
*/
|
|
static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
|
|
{
|
|
SSB *ssb = &tp->ssb; /* The address of the SSB. */
|
|
|
|
/* C 0 1 2 INTERRUPT CODE
|
|
* - - - - --------------
|
|
* 1 1 1 1 TRANSMIT STATUS
|
|
* 1 1 1 1 RECEIVE STATUS
|
|
* 1 ? ? 0 COMMAND STATUS
|
|
* 0 0 0 0 SCB CLEAR
|
|
* 1 1 0 0 RING STATUS
|
|
* 0 0 0 0 ADAPTER CHECK
|
|
*
|
|
* 0 = SSB field not affected by interrupt
|
|
* 1 = SSB field is affected by interrupt
|
|
*
|
|
* C = SSB ADDRESS +0: COMMAND
|
|
* 0 = SSB ADDRESS +2: STATUS 0
|
|
* 1 = SSB ADDRESS +4: STATUS 1
|
|
* 2 = SSB ADDRESS +6: STATUS 2
|
|
*/
|
|
|
|
/* Check if this interrupt does use the SSB. */
|
|
|
|
if(IrqType != STS_IRQ_TRANSMIT_STATUS
|
|
&& IrqType != STS_IRQ_RECEIVE_STATUS
|
|
&& IrqType != STS_IRQ_COMMAND_STATUS
|
|
&& IrqType != STS_IRQ_RING_STATUS)
|
|
{
|
|
return (1); /* SSB not involved. */
|
|
}
|
|
|
|
/* Note: All fields of the SSB have been set to all ones (-1) after it
|
|
* has last been used by the software (see DriverIsr()).
|
|
*
|
|
* Check if the affected SSB fields are still unchanged.
|
|
*/
|
|
|
|
if(ssb->STS == (unsigned short) -1)
|
|
return (0); /* Command field not yet available. */
|
|
if(IrqType == STS_IRQ_COMMAND_STATUS)
|
|
return (1); /* Status fields not always affected. */
|
|
if(ssb->Parm[0] == (unsigned short) -1)
|
|
return (0); /* Status 1 field not yet available. */
|
|
if(IrqType == STS_IRQ_RING_STATUS)
|
|
return (1); /* Status 2 & 3 fields not affected. */
|
|
|
|
/* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
|
|
if(ssb->Parm[1] == (unsigned short) -1)
|
|
return (0); /* Status 2 field not yet available. */
|
|
if(ssb->Parm[2] == (unsigned short) -1)
|
|
return (0); /* Status 3 field not yet available. */
|
|
|
|
return (1); /* All SSB fields have been written by the adapter. */
|
|
}
|
|
|
|
/*
|
|
* Evaluates the command results status in the SSB status field.
|
|
*/
|
|
static void tms380tr_cmd_status_irq(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned short ssb_cmd, ssb_parm_0;
|
|
unsigned short ssb_parm_1;
|
|
char *open_err = "Open error -";
|
|
char *code_err = "Open code -";
|
|
|
|
/* Copy the ssb values to local variables */
|
|
ssb_cmd = tp->ssb.STS;
|
|
ssb_parm_0 = tp->ssb.Parm[0];
|
|
ssb_parm_1 = tp->ssb.Parm[1];
|
|
|
|
if(ssb_cmd == OPEN)
|
|
{
|
|
tp->Sleeping = 0;
|
|
if(!tp->ReOpenInProgress)
|
|
wake_up_interruptible(&tp->wait_for_tok_int);
|
|
|
|
tp->OpenCommandIssued = 0;
|
|
tp->ScbInUse = 0;
|
|
|
|
if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
|
|
{
|
|
/* Success, the adapter is open. */
|
|
tp->LobeWireFaultLogged = 0;
|
|
tp->AdapterOpenFlag = 1;
|
|
tp->AdapterVirtOpenFlag = 1;
|
|
tp->TransmitCommandActive = 0;
|
|
tms380tr_exec_cmd(dev, OC_TRANSMIT);
|
|
tms380tr_exec_cmd(dev, OC_RECEIVE);
|
|
|
|
if(tp->ReOpenInProgress)
|
|
tp->ReOpenInProgress = 0;
|
|
|
|
return;
|
|
}
|
|
else /* The adapter did not open. */
|
|
{
|
|
if(ssb_parm_0 & NODE_ADDR_ERROR)
|
|
printk(KERN_INFO "%s: Node address error\n",
|
|
dev->name);
|
|
if(ssb_parm_0 & LIST_SIZE_ERROR)
|
|
printk(KERN_INFO "%s: List size error\n",
|
|
dev->name);
|
|
if(ssb_parm_0 & BUF_SIZE_ERROR)
|
|
printk(KERN_INFO "%s: Buffer size error\n",
|
|
dev->name);
|
|
if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
|
|
printk(KERN_INFO "%s: Tx buffer count error\n",
|
|
dev->name);
|
|
if(ssb_parm_0 & INVALID_OPEN_OPTION)
|
|
printk(KERN_INFO "%s: Invalid open option\n",
|
|
dev->name);
|
|
if(ssb_parm_0 & OPEN_ERROR)
|
|
{
|
|
/* Show the open phase. */
|
|
switch(ssb_parm_0 & OPEN_PHASES_MASK)
|
|
{
|
|
case LOBE_MEDIA_TEST:
|
|
if(!tp->LobeWireFaultLogged)
|
|
{
|
|
tp->LobeWireFaultLogged = 1;
|
|
printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
|
|
}
|
|
tp->ReOpenInProgress = 1;
|
|
tp->AdapterOpenFlag = 0;
|
|
tp->AdapterVirtOpenFlag = 1;
|
|
tms380tr_open_adapter(dev);
|
|
return;
|
|
|
|
case PHYSICAL_INSERTION:
|
|
printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
|
|
break;
|
|
|
|
case ADDRESS_VERIFICATION:
|
|
printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
|
|
break;
|
|
|
|
case PARTICIPATION_IN_RING_POLL:
|
|
printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
|
|
break;
|
|
|
|
case REQUEST_INITIALISATION:
|
|
printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
|
|
break;
|
|
|
|
case FULLDUPLEX_CHECK:
|
|
printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
|
|
break;
|
|
}
|
|
|
|
/* Show the open errors. */
|
|
switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
|
|
{
|
|
case OPEN_FUNCTION_FAILURE:
|
|
printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_FUNCTION_FAILURE;
|
|
break;
|
|
|
|
case OPEN_SIGNAL_LOSS:
|
|
printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_SIGNAL_LOSS;
|
|
break;
|
|
|
|
case OPEN_TIMEOUT:
|
|
printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_TIMEOUT;
|
|
break;
|
|
|
|
case OPEN_RING_FAILURE:
|
|
printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_RING_FAILURE;
|
|
break;
|
|
|
|
case OPEN_RING_BEACONING:
|
|
printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_RING_BEACONING;
|
|
break;
|
|
|
|
case OPEN_DUPLICATE_NODEADDR:
|
|
printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_DUPLICATE_NODEADDR;
|
|
break;
|
|
|
|
case OPEN_REQUEST_INIT:
|
|
printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_REQUEST_INIT;
|
|
break;
|
|
|
|
case OPEN_REMOVE_RECEIVED:
|
|
printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_REMOVE_RECEIVED;
|
|
break;
|
|
|
|
case OPEN_FULLDUPLEX_SET:
|
|
printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_FULLDUPLEX_SET;
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
|
|
tp->LastOpenStatus =
|
|
OPEN_FUNCTION_FAILURE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
tp->AdapterOpenFlag = 0;
|
|
tp->AdapterVirtOpenFlag = 0;
|
|
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(ssb_cmd != READ_ERROR_LOG)
|
|
return;
|
|
|
|
/* Add values from the error log table to the MAC
|
|
* statistics counters and update the errorlogtable
|
|
* memory.
|
|
*/
|
|
tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
|
|
tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
|
|
tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
|
|
tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
|
|
tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
|
|
tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
|
|
tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
|
|
tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
|
|
tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
|
|
tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
|
|
tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
|
|
tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
|
|
tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The inverse routine to tms380tr_open().
|
|
*/
|
|
int tms380tr_close(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
netif_stop_queue(dev);
|
|
|
|
del_timer(&tp->timer);
|
|
|
|
/* Flush the Tx and disable Rx here. */
|
|
|
|
tp->HaltInProgress = 1;
|
|
tms380tr_exec_cmd(dev, OC_CLOSE);
|
|
tp->timer.expires = jiffies + 1*HZ;
|
|
tp->timer.function = tms380tr_timer_end_wait;
|
|
tp->timer.data = (unsigned long)dev;
|
|
add_timer(&tp->timer);
|
|
|
|
tms380tr_enable_interrupts(dev);
|
|
|
|
tp->Sleeping = 1;
|
|
interruptible_sleep_on(&tp->wait_for_tok_int);
|
|
tp->TransmitCommandActive = 0;
|
|
|
|
del_timer(&tp->timer);
|
|
tms380tr_disable_interrupts(dev);
|
|
|
|
#ifdef CONFIG_ISA
|
|
if(dev->dma > 0)
|
|
{
|
|
unsigned long flags=claim_dma_lock();
|
|
disable_dma(dev->dma);
|
|
release_dma_lock(flags);
|
|
}
|
|
#endif
|
|
|
|
SIFWRITEW(0xFF00, SIFCMD);
|
|
#if 0
|
|
if(dev->dma > 0) /* what the? */
|
|
SIFWRITEB(0xff, POSREG);
|
|
#endif
|
|
tms380tr_cancel_tx_queue(tp);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Get the current statistics. This may be called with the card open
|
|
* or closed.
|
|
*/
|
|
static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
return ((struct net_device_stats *)&tp->MacStat);
|
|
}
|
|
|
|
/*
|
|
* Set or clear the multicast filter for this adapter.
|
|
*/
|
|
static void tms380tr_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned int OpenOptions;
|
|
|
|
OpenOptions = tp->ocpl.OPENOptions &
|
|
~(PASS_ADAPTER_MAC_FRAMES
|
|
| PASS_ATTENTION_FRAMES
|
|
| PASS_BEACON_MAC_FRAMES
|
|
| COPY_ALL_MAC_FRAMES
|
|
| COPY_ALL_NON_MAC_FRAMES);
|
|
|
|
tp->ocpl.FunctAddr = 0;
|
|
|
|
if(dev->flags & IFF_PROMISC)
|
|
/* Enable promiscuous mode */
|
|
OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
|
|
COPY_ALL_MAC_FRAMES;
|
|
else
|
|
{
|
|
if(dev->flags & IFF_ALLMULTI)
|
|
{
|
|
/* Disable promiscuous mode, use normal mode. */
|
|
tp->ocpl.FunctAddr = 0xFFFFFFFF;
|
|
}
|
|
else
|
|
{
|
|
int i;
|
|
struct dev_mc_list *mclist = dev->mc_list;
|
|
for (i=0; i< dev->mc_count; i++)
|
|
{
|
|
((char *)(&tp->ocpl.FunctAddr))[0] |=
|
|
mclist->dmi_addr[2];
|
|
((char *)(&tp->ocpl.FunctAddr))[1] |=
|
|
mclist->dmi_addr[3];
|
|
((char *)(&tp->ocpl.FunctAddr))[2] |=
|
|
mclist->dmi_addr[4];
|
|
((char *)(&tp->ocpl.FunctAddr))[3] |=
|
|
mclist->dmi_addr[5];
|
|
mclist = mclist->next;
|
|
}
|
|
}
|
|
tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
|
|
}
|
|
|
|
tp->ocpl.OPENOptions = OpenOptions;
|
|
tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Wait for some time (microseconds)
|
|
*/
|
|
void tms380tr_wait(unsigned long time)
|
|
{
|
|
#if 0
|
|
long tmp;
|
|
|
|
tmp = jiffies + time/(1000000/HZ);
|
|
do {
|
|
current->state = TASK_INTERRUPTIBLE;
|
|
tmp = schedule_timeout(tmp);
|
|
} while(time_after(tmp, jiffies));
|
|
#else
|
|
udelay(time);
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Write a command value to the SIFCMD register
|
|
*/
|
|
static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
|
|
{
|
|
unsigned short cmd;
|
|
unsigned short SifStsValue;
|
|
unsigned long loop_counter;
|
|
|
|
WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
|
|
cmd = (unsigned short)WriteValue;
|
|
loop_counter = 0,5 * 800000;
|
|
do {
|
|
SifStsValue = SIFREADW(SIFSTS);
|
|
} while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
|
|
SIFWRITEW(cmd, SIFCMD);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Processes adapter hardware reset, halts adapter and downloads firmware,
|
|
* clears the halt bit.
|
|
*/
|
|
static int tms380tr_reset_adapter(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned short *fw_ptr;
|
|
unsigned short count, c, count2;
|
|
const struct firmware *fw_entry = NULL;
|
|
|
|
strncpy(tms_device.bus_id,dev->name, BUS_ID_SIZE);
|
|
|
|
if (request_firmware(&fw_entry, "tms380tr.bin", &tms_device) != 0) {
|
|
printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
|
|
dev->name, "tms380tr.bin");
|
|
return (-1);
|
|
}
|
|
|
|
fw_ptr = (unsigned short *)fw_entry->data;
|
|
count2 = fw_entry->size / 2;
|
|
|
|
/* Hardware adapter reset */
|
|
SIFWRITEW(ACL_ARESET, SIFACL);
|
|
tms380tr_wait(40);
|
|
|
|
c = SIFREADW(SIFACL);
|
|
tms380tr_wait(20);
|
|
|
|
if(dev->dma == 0) /* For PCI adapters */
|
|
{
|
|
c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */
|
|
if(tp->setnselout)
|
|
c |= (*tp->setnselout)(dev);
|
|
}
|
|
|
|
/* In case a command is pending - forget it */
|
|
tp->ScbInUse = 0;
|
|
|
|
c &= ~ACL_ARESET; /* Clear adapter reset bit */
|
|
c |= ACL_CPHALT; /* Halt adapter CPU, allow download */
|
|
c |= ACL_BOOT;
|
|
c |= ACL_SINTEN;
|
|
c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */
|
|
SIFWRITEW(c, SIFACL);
|
|
tms380tr_wait(40);
|
|
|
|
count = 0;
|
|
/* Download firmware via DIO interface: */
|
|
do {
|
|
if (count2 < 3) continue;
|
|
|
|
/* Download first address part */
|
|
SIFWRITEW(*fw_ptr, SIFADX);
|
|
fw_ptr++;
|
|
count2--;
|
|
/* Download second address part */
|
|
SIFWRITEW(*fw_ptr, SIFADD);
|
|
fw_ptr++;
|
|
count2--;
|
|
|
|
if((count = *fw_ptr) != 0) /* Load loop counter */
|
|
{
|
|
fw_ptr++; /* Download block data */
|
|
count2--;
|
|
if (count > count2) continue;
|
|
|
|
for(; count > 0; count--)
|
|
{
|
|
SIFWRITEW(*fw_ptr, SIFINC);
|
|
fw_ptr++;
|
|
count2--;
|
|
}
|
|
}
|
|
else /* Stop, if last block downloaded */
|
|
{
|
|
c = SIFREADW(SIFACL);
|
|
c &= (~ACL_CPHALT | ACL_SINTEN);
|
|
|
|
/* Clear CPHALT and start BUD */
|
|
SIFWRITEW(c, SIFACL);
|
|
if (fw_entry)
|
|
release_firmware(fw_entry);
|
|
return (1);
|
|
}
|
|
} while(count == 0);
|
|
|
|
if (fw_entry)
|
|
release_firmware(fw_entry);
|
|
printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Starts bring up diagnostics of token ring adapter and evaluates
|
|
* diagnostic results.
|
|
*/
|
|
static int tms380tr_bringup_diags(struct net_device *dev)
|
|
{
|
|
int loop_cnt, retry_cnt;
|
|
unsigned short Status;
|
|
|
|
tms380tr_wait(HALF_SECOND);
|
|
tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
|
|
tms380tr_wait(HALF_SECOND);
|
|
|
|
retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */
|
|
|
|
do {
|
|
retry_cnt--;
|
|
if(tms380tr_debug > 3)
|
|
printk(KERN_DEBUG "BUD-Status: ");
|
|
loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/
|
|
do { /* Inspect BUD results */
|
|
loop_cnt--;
|
|
tms380tr_wait(HALF_SECOND);
|
|
Status = SIFREADW(SIFSTS);
|
|
Status &= STS_MASK;
|
|
|
|
if(tms380tr_debug > 3)
|
|
printk(KERN_DEBUG " %04X \n", Status);
|
|
/* BUD successfully completed */
|
|
if(Status == STS_INITIALIZE)
|
|
return (1);
|
|
/* Unrecoverable hardware error, BUD not completed? */
|
|
} while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
|
|
!= (STS_ERROR | STS_TEST)));
|
|
|
|
/* Error preventing completion of BUD */
|
|
if(retry_cnt > 0)
|
|
{
|
|
printk(KERN_INFO "%s: Adapter Software Reset.\n",
|
|
dev->name);
|
|
tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
|
|
tms380tr_wait(HALF_SECOND);
|
|
}
|
|
} while(retry_cnt > 0);
|
|
|
|
Status = SIFREADW(SIFSTS);
|
|
|
|
printk(KERN_INFO "%s: Hardware error\n", dev->name);
|
|
/* Hardware error occurred! */
|
|
Status &= 0x001f;
|
|
if (Status & 0x0010)
|
|
printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
|
|
else if ((Status & 0x000f) > 6)
|
|
printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
|
|
else
|
|
printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Copy initialisation data to adapter memory, beginning at address
|
|
* 1:0A00; Starting DMA test and evaluating result bits.
|
|
*/
|
|
static int tms380tr_init_adapter(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
|
|
const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
|
|
0xC5, 0xD9, 0xC3, 0xD4};
|
|
void *ptr = (void *)&tp->ipb;
|
|
unsigned short *ipb_ptr = (unsigned short *)ptr;
|
|
unsigned char *cb_ptr = (unsigned char *) &tp->scb;
|
|
unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
|
|
unsigned short Status;
|
|
int i, loop_cnt, retry_cnt;
|
|
|
|
/* Normalize: byte order low/high, word order high/low! (only IPB!) */
|
|
tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
|
|
tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
|
|
|
|
if(tms380tr_debug > 3)
|
|
{
|
|
printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
|
|
printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
|
|
printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
|
|
printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp);
|
|
}
|
|
/* Maximum: three initialization retries */
|
|
retry_cnt = INIT_MAX_RETRIES;
|
|
|
|
do {
|
|
retry_cnt--;
|
|
|
|
/* Transfer initialization block */
|
|
SIFWRITEW(0x0001, SIFADX);
|
|
|
|
/* To address 0001:0A00 of adapter RAM */
|
|
SIFWRITEW(0x0A00, SIFADD);
|
|
|
|
/* Write 11 words to adapter RAM */
|
|
for(i = 0; i < 11; i++)
|
|
SIFWRITEW(ipb_ptr[i], SIFINC);
|
|
|
|
/* Execute SCB adapter command */
|
|
tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
|
|
|
|
loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */
|
|
|
|
/* While remaining retries, no error and not completed */
|
|
do {
|
|
Status = 0;
|
|
loop_cnt--;
|
|
tms380tr_wait(HALF_SECOND);
|
|
|
|
/* Mask interesting status bits */
|
|
Status = SIFREADW(SIFSTS);
|
|
Status &= STS_MASK;
|
|
} while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
|
|
&& ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
|
|
|
|
if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
|
|
{
|
|
/* Initialization completed without error */
|
|
i = 0;
|
|
do { /* Test if contents of SCB is valid */
|
|
if(SCB_Test[i] != *(cb_ptr + i))
|
|
{
|
|
printk(KERN_INFO "%s: DMA failed\n", dev->name);
|
|
/* DMA data error: wrong data in SCB */
|
|
return (-1);
|
|
}
|
|
i++;
|
|
} while(i < 6);
|
|
|
|
i = 0;
|
|
do { /* Test if contents of SSB is valid */
|
|
if(SSB_Test[i] != *(sb_ptr + i))
|
|
/* DMA data error: wrong data in SSB */
|
|
return (-1);
|
|
i++;
|
|
} while (i < 8);
|
|
|
|
return (1); /* Adapter successfully initialized */
|
|
}
|
|
else
|
|
{
|
|
if((Status & STS_ERROR) != 0)
|
|
{
|
|
/* Initialization error occurred */
|
|
Status = SIFREADW(SIFSTS);
|
|
Status &= STS_ERROR_MASK;
|
|
/* ShowInitialisationErrorCode(Status); */
|
|
printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
|
|
return (-1); /* Unrecoverable error */
|
|
}
|
|
else
|
|
{
|
|
if(retry_cnt > 0)
|
|
{
|
|
/* Reset adapter and try init again */
|
|
tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
|
|
tms380tr_wait(HALF_SECOND);
|
|
}
|
|
}
|
|
}
|
|
} while(retry_cnt > 0);
|
|
|
|
printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Check for outstanding commands in command queue and tries to execute
|
|
* command immediately. Corresponding command flag in command queue is cleared.
|
|
*/
|
|
static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned long Addr = 0;
|
|
|
|
if(tp->CMDqueue == 0)
|
|
return; /* No command execution */
|
|
|
|
/* If SCB in use: no command */
|
|
if(tp->ScbInUse == 1)
|
|
return;
|
|
|
|
/* Check if adapter is opened, avoiding COMMAND_REJECT
|
|
* interrupt by the adapter!
|
|
*/
|
|
if(tp->AdapterOpenFlag == 0)
|
|
{
|
|
if(tp->CMDqueue & OC_OPEN)
|
|
{
|
|
/* Execute OPEN command */
|
|
tp->CMDqueue ^= OC_OPEN;
|
|
|
|
Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
|
|
tp->scb.Parm[0] = LOWORD(Addr);
|
|
tp->scb.Parm[1] = HIWORD(Addr);
|
|
tp->scb.CMD = OPEN;
|
|
}
|
|
else
|
|
/* No OPEN command queued, but adapter closed. Note:
|
|
* We'll try to re-open the adapter in DriverPoll()
|
|
*/
|
|
return; /* No adapter command issued */
|
|
}
|
|
else
|
|
{
|
|
/* Adapter is open; evaluate command queue: try to execute
|
|
* outstanding commands (depending on priority!) CLOSE
|
|
* command queued
|
|
*/
|
|
if(tp->CMDqueue & OC_CLOSE)
|
|
{
|
|
tp->CMDqueue ^= OC_CLOSE;
|
|
tp->AdapterOpenFlag = 0;
|
|
tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
|
|
tp->scb.Parm[1] = 0; /* but should be set to zero! */
|
|
tp->scb.CMD = CLOSE;
|
|
if(!tp->HaltInProgress)
|
|
tp->CMDqueue |= OC_OPEN; /* re-open adapter */
|
|
else
|
|
tp->CMDqueue = 0; /* no more commands */
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_RECEIVE)
|
|
{
|
|
tp->CMDqueue ^= OC_RECEIVE;
|
|
Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
|
|
tp->scb.Parm[0] = LOWORD(Addr);
|
|
tp->scb.Parm[1] = HIWORD(Addr);
|
|
tp->scb.CMD = RECEIVE;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_TRANSMIT_HALT)
|
|
{
|
|
/* NOTE: TRANSMIT.HALT must be checked
|
|
* before TRANSMIT.
|
|
*/
|
|
tp->CMDqueue ^= OC_TRANSMIT_HALT;
|
|
tp->scb.CMD = TRANSMIT_HALT;
|
|
|
|
/* Parm[0] and Parm[1] are ignored
|
|
* but should be set to zero!
|
|
*/
|
|
tp->scb.Parm[0] = 0;
|
|
tp->scb.Parm[1] = 0;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_TRANSMIT)
|
|
{
|
|
/* NOTE: TRANSMIT must be
|
|
* checked after TRANSMIT.HALT
|
|
*/
|
|
if(tp->TransmitCommandActive)
|
|
{
|
|
if(!tp->TransmitHaltScheduled)
|
|
{
|
|
tp->TransmitHaltScheduled = 1;
|
|
tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
|
|
}
|
|
tp->TransmitCommandActive = 0;
|
|
return;
|
|
}
|
|
|
|
tp->CMDqueue ^= OC_TRANSMIT;
|
|
tms380tr_cancel_tx_queue(tp);
|
|
Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
|
|
tp->scb.Parm[0] = LOWORD(Addr);
|
|
tp->scb.Parm[1] = HIWORD(Addr);
|
|
tp->scb.CMD = TRANSMIT;
|
|
tp->TransmitCommandActive = 1;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
|
|
{
|
|
tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
|
|
tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
|
|
tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
|
|
tp->scb.Parm[1] = 0; /* is ignored but should be zero */
|
|
tp->scb.CMD = MODIFY_OPEN_PARMS;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
|
|
{
|
|
tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
|
|
tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
|
|
tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
|
|
tp->scb.CMD = SET_FUNCT_ADDR;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_SET_GROUP_ADDR)
|
|
{
|
|
tp->CMDqueue ^= OC_SET_GROUP_ADDR;
|
|
tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
|
|
tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
|
|
tp->scb.CMD = SET_GROUP_ADDR;
|
|
}
|
|
else
|
|
{
|
|
if(tp->CMDqueue & OC_READ_ERROR_LOG)
|
|
{
|
|
tp->CMDqueue ^= OC_READ_ERROR_LOG;
|
|
Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
|
|
tp->scb.Parm[0] = LOWORD(Addr);
|
|
tp->scb.Parm[1] = HIWORD(Addr);
|
|
tp->scb.CMD = READ_ERROR_LOG;
|
|
}
|
|
else
|
|
{
|
|
printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
|
|
tp->CMDqueue = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
tp->ScbInUse = 1; /* Set semaphore: SCB in use. */
|
|
|
|
/* Execute SCB and generate IRQ when done. */
|
|
tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* IRQ conditions: signal loss on the ring, transmit or receive of beacon
|
|
* frames (disabled if bit 1 of OPEN option is set); report error MAC
|
|
* frame transmit (disabled if bit 2 of OPEN option is set); open or short
|
|
* circuit fault on the lobe is detected; remove MAC frame received;
|
|
* error counter overflow (255); opened adapter is the only station in ring.
|
|
* After some of the IRQs the adapter is closed!
|
|
*/
|
|
static void tms380tr_ring_status_irq(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
|
|
|
|
/* First: fill up statistics */
|
|
if(tp->ssb.Parm[0] & SIGNAL_LOSS)
|
|
{
|
|
printk(KERN_INFO "%s: Signal Loss\n", dev->name);
|
|
tp->MacStat.line_errors++;
|
|
}
|
|
|
|
/* Adapter is closed, but initialized */
|
|
if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
|
|
{
|
|
printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
|
|
dev->name);
|
|
tp->MacStat.line_errors++;
|
|
}
|
|
|
|
if(tp->ssb.Parm[0] & RING_RECOVERY)
|
|
printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
|
|
|
|
/* Counter overflow: read error log */
|
|
if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
|
|
{
|
|
printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
|
|
tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
|
|
}
|
|
|
|
/* Adapter is closed, but initialized */
|
|
if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
|
|
printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
|
|
dev->name);
|
|
|
|
/* Adapter is closed, but initialized */
|
|
if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
|
|
printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
|
|
dev->name);
|
|
|
|
if(tp->ssb.Parm[0] & HARD_ERROR)
|
|
printk(KERN_INFO "%s: Hard Error\n", dev->name);
|
|
|
|
if(tp->ssb.Parm[0] & SOFT_ERROR)
|
|
printk(KERN_INFO "%s: Soft Error\n", dev->name);
|
|
|
|
if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
|
|
printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
|
|
|
|
if(tp->ssb.Parm[0] & SINGLE_STATION)
|
|
printk(KERN_INFO "%s: Single Station\n", dev->name);
|
|
|
|
/* Check if adapter has been closed */
|
|
if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
|
|
{
|
|
printk(KERN_INFO "%s: Adapter closed (Reopening),"
|
|
"CurrentRingStat %x\n",
|
|
dev->name, tp->CurrentRingStatus);
|
|
tp->AdapterOpenFlag = 0;
|
|
tms380tr_open_adapter(dev);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Issued if adapter has encountered an unrecoverable hardware
|
|
* or software error.
|
|
*/
|
|
static void tms380tr_chk_irq(struct net_device *dev)
|
|
{
|
|
int i;
|
|
unsigned short AdapterCheckBlock[4];
|
|
struct net_local *tp = netdev_priv(dev);
|
|
|
|
tp->AdapterOpenFlag = 0; /* Adapter closed now */
|
|
|
|
/* Page number of adapter memory */
|
|
SIFWRITEW(0x0001, SIFADX);
|
|
/* Address offset */
|
|
SIFWRITEW(CHECKADDR, SIFADR);
|
|
|
|
/* Reading 8 byte adapter check block. */
|
|
for(i = 0; i < 4; i++)
|
|
AdapterCheckBlock[i] = SIFREADW(SIFINC);
|
|
|
|
if(tms380tr_debug > 3)
|
|
{
|
|
printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
|
|
for (i = 0; i < 4; i++)
|
|
printk("%04X", AdapterCheckBlock[i]);
|
|
printk("\n");
|
|
}
|
|
|
|
switch(AdapterCheckBlock[0])
|
|
{
|
|
case DIO_PARITY:
|
|
printk(KERN_INFO "%s: DIO parity error\n", dev->name);
|
|
break;
|
|
|
|
case DMA_READ_ABORT:
|
|
printk(KERN_INFO "%s DMA read operation aborted:\n",
|
|
dev->name);
|
|
switch (AdapterCheckBlock[1])
|
|
{
|
|
case 0:
|
|
printk(KERN_INFO "Timeout\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
case 1:
|
|
printk(KERN_INFO "Parity error\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
case 2:
|
|
printk(KERN_INFO "Bus error\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "Unknown error.\n");
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case DMA_WRITE_ABORT:
|
|
printk(KERN_INFO "%s: DMA write operation aborted: \n",
|
|
dev->name);
|
|
switch (AdapterCheckBlock[1])
|
|
{
|
|
case 0:
|
|
printk(KERN_INFO "Timeout\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
case 1:
|
|
printk(KERN_INFO "Parity error\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
case 2:
|
|
printk(KERN_INFO "Bus error\n");
|
|
printk(KERN_INFO "Address: %04X %04X\n",
|
|
AdapterCheckBlock[2],
|
|
AdapterCheckBlock[3]);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "Unknown error.\n");
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ILLEGAL_OP_CODE:
|
|
printk(KERN_INFO "%s: Illegal operation code in firmware\n",
|
|
dev->name);
|
|
/* Parm[0-3]: adapter internal register R13-R15 */
|
|
break;
|
|
|
|
case PARITY_ERRORS:
|
|
printk(KERN_INFO "%s: Adapter internal bus parity error\n",
|
|
dev->name);
|
|
/* Parm[0-3]: adapter internal register R13-R15 */
|
|
break;
|
|
|
|
case RAM_DATA_ERROR:
|
|
printk(KERN_INFO "%s: RAM data error\n", dev->name);
|
|
/* Parm[0-1]: MSW/LSW address of RAM location. */
|
|
break;
|
|
|
|
case RAM_PARITY_ERROR:
|
|
printk(KERN_INFO "%s: RAM parity error\n", dev->name);
|
|
/* Parm[0-1]: MSW/LSW address of RAM location. */
|
|
break;
|
|
|
|
case RING_UNDERRUN:
|
|
printk(KERN_INFO "%s: Internal DMA underrun detected\n",
|
|
dev->name);
|
|
break;
|
|
|
|
case INVALID_IRQ:
|
|
printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
|
|
dev->name);
|
|
/* Parm[0-3]: adapter internal register R13-R15 */
|
|
break;
|
|
|
|
case INVALID_ERROR_IRQ:
|
|
printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
|
|
dev->name);
|
|
/* Parm[0-3]: adapter internal register R13-R15 */
|
|
break;
|
|
|
|
case INVALID_XOP:
|
|
printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
|
|
dev->name);
|
|
/* Parm[0-3]: adapter internal register R13-R15 */
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: Unknown status", dev->name);
|
|
break;
|
|
}
|
|
|
|
if(tms380tr_chipset_init(dev) == 1)
|
|
{
|
|
/* Restart of firmware successful */
|
|
tp->AdapterOpenFlag = 1;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Internal adapter pointer to RAM data are copied from adapter into
|
|
* host system.
|
|
*/
|
|
static int tms380tr_read_ptr(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned short adapterram;
|
|
|
|
tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
|
|
ADAPTER_INT_PTRS, 16);
|
|
tms380tr_read_ram(dev, (unsigned char *)&adapterram,
|
|
cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
|
|
return be16_to_cpu(adapterram);
|
|
}
|
|
|
|
/*
|
|
* Reads a number of bytes from adapter to system memory.
|
|
*/
|
|
static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
|
|
unsigned short Address, int Length)
|
|
{
|
|
int i;
|
|
unsigned short old_sifadx, old_sifadr, InWord;
|
|
|
|
/* Save the current values */
|
|
old_sifadx = SIFREADW(SIFADX);
|
|
old_sifadr = SIFREADW(SIFADR);
|
|
|
|
/* Page number of adapter memory */
|
|
SIFWRITEW(0x0001, SIFADX);
|
|
/* Address offset in adapter RAM */
|
|
SIFWRITEW(Address, SIFADR);
|
|
|
|
/* Copy len byte from adapter memory to system data area. */
|
|
i = 0;
|
|
for(;;)
|
|
{
|
|
InWord = SIFREADW(SIFINC);
|
|
|
|
*(Data + i) = HIBYTE(InWord); /* Write first byte */
|
|
if(++i == Length) /* All is done break */
|
|
break;
|
|
|
|
*(Data + i) = LOBYTE(InWord); /* Write second byte */
|
|
if (++i == Length) /* All is done break */
|
|
break;
|
|
}
|
|
|
|
/* Restore original values */
|
|
SIFWRITEW(old_sifadx, SIFADX);
|
|
SIFWRITEW(old_sifadr, SIFADR);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Cancel all queued packets in the transmission queue.
|
|
*/
|
|
static void tms380tr_cancel_tx_queue(struct net_local* tp)
|
|
{
|
|
TPL *tpl;
|
|
|
|
/*
|
|
* NOTE: There must not be an active TRANSMIT command pending, when
|
|
* this function is called.
|
|
*/
|
|
if(tp->TransmitCommandActive)
|
|
return;
|
|
|
|
for(;;)
|
|
{
|
|
tpl = tp->TplBusy;
|
|
if(!tpl->BusyFlag)
|
|
break;
|
|
/* "Remove" TPL from busy list. */
|
|
tp->TplBusy = tpl->NextTPLPtr;
|
|
tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */
|
|
tpl->BusyFlag = 0; /* "free" TPL */
|
|
|
|
printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
|
|
if (tpl->DMABuff)
|
|
pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_any(tpl->Skb);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This function is called whenever a transmit interrupt is generated by the
|
|
* adapter. For a command complete interrupt, it is checked if we have to
|
|
* issue a new transmit command or not.
|
|
*/
|
|
static void tms380tr_tx_status_irq(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned char HighByte, HighAc, LowAc;
|
|
TPL *tpl;
|
|
|
|
/* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
|
|
* available, because the CLEAR SSB command has already been issued.
|
|
*
|
|
* Process all complete transmissions.
|
|
*/
|
|
|
|
for(;;)
|
|
{
|
|
tpl = tp->TplBusy;
|
|
if(!tpl->BusyFlag || (tpl->Status
|
|
& (TX_VALID | TX_FRAME_COMPLETE))
|
|
!= TX_FRAME_COMPLETE)
|
|
{
|
|
break;
|
|
}
|
|
|
|
/* "Remove" TPL from busy list. */
|
|
tp->TplBusy = tpl->NextTPLPtr ;
|
|
|
|
/* Check the transmit status field only for directed frames*/
|
|
if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
|
|
{
|
|
HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
|
|
HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte);
|
|
LowAc = GET_FRAME_STATUS_LOW_AC(HighByte);
|
|
|
|
if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
|
|
{
|
|
printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
|
|
dev->name,
|
|
*(unsigned long *)&tpl->MData[2+2]);
|
|
}
|
|
else
|
|
{
|
|
if(tms380tr_debug > 3)
|
|
printk(KERN_DEBUG "%s: Directed frame tx'd\n",
|
|
dev->name);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!DIRECTED_FRAME(tpl))
|
|
{
|
|
if(tms380tr_debug > 3)
|
|
printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
|
|
dev->name);
|
|
}
|
|
}
|
|
|
|
tp->MacStat.tx_packets++;
|
|
if (tpl->DMABuff)
|
|
pci_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(tpl->Skb);
|
|
tpl->BusyFlag = 0; /* "free" TPL */
|
|
}
|
|
|
|
if(!tp->TplFree->NextTPLPtr->BusyFlag)
|
|
netif_wake_queue(dev);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Called if a frame receive interrupt is generated by the adapter.
|
|
* Check if the frame is valid and indicate it to system.
|
|
*/
|
|
static void tms380tr_rcv_status_irq(struct net_device *dev)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
unsigned char *ReceiveDataPtr;
|
|
struct sk_buff *skb;
|
|
unsigned int Length, Length2;
|
|
RPL *rpl;
|
|
RPL *SaveHead;
|
|
dma_addr_t dmabuf;
|
|
|
|
/* NOTE: At this point the SSB from RECEIVE STATUS is no longer
|
|
* available, because the CLEAR SSB command has already been issued.
|
|
*
|
|
* Process all complete receives.
|
|
*/
|
|
|
|
for(;;)
|
|
{
|
|
rpl = tp->RplHead;
|
|
if(rpl->Status & RX_VALID)
|
|
break; /* RPL still in use by adapter */
|
|
|
|
/* Forward RPLHead pointer to next list. */
|
|
SaveHead = tp->RplHead;
|
|
tp->RplHead = rpl->NextRPLPtr;
|
|
|
|
/* Get the frame size (Byte swap for Intel).
|
|
* Do this early (see workaround comment below)
|
|
*/
|
|
Length = be16_to_cpu((unsigned short)rpl->FrameSize);
|
|
|
|
/* Check if the Frame_Start, Frame_End and
|
|
* Frame_Complete bits are set.
|
|
*/
|
|
if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
|
|
== VALID_SINGLE_BUFFER_FRAME)
|
|
{
|
|
ReceiveDataPtr = rpl->MData;
|
|
|
|
/* Workaround for delayed write of FrameSize on ISA
|
|
* (FrameSize is false but valid-bit is reset)
|
|
* Frame size is set to zero when the RPL is freed.
|
|
* Length2 is there because there have also been
|
|
* cases where the FrameSize was partially written
|
|
*/
|
|
Length2 = be16_to_cpu((unsigned short)rpl->FrameSize);
|
|
|
|
if(Length == 0 || Length != Length2)
|
|
{
|
|
tp->RplHead = SaveHead;
|
|
break; /* Return to tms380tr_interrupt */
|
|
}
|
|
tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
|
|
|
|
if(tms380tr_debug > 3)
|
|
printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
|
|
dev->name, Length, Length);
|
|
|
|
/* Indicate the received frame to system the
|
|
* adapter does the Source-Routing padding for
|
|
* us. See: OpenOptions in tms380tr_init_opb()
|
|
*/
|
|
skb = rpl->Skb;
|
|
if(rpl->SkbStat == SKB_UNAVAILABLE)
|
|
{
|
|
/* Try again to allocate skb */
|
|
skb = dev_alloc_skb(tp->MaxPacketSize);
|
|
if(skb == NULL)
|
|
{
|
|
/* Update Stats ?? */
|
|
}
|
|
else
|
|
{
|
|
skb->dev = dev;
|
|
skb_put(skb, tp->MaxPacketSize);
|
|
rpl->SkbStat = SKB_DATA_COPY;
|
|
ReceiveDataPtr = rpl->MData;
|
|
}
|
|
}
|
|
|
|
if(skb && (rpl->SkbStat == SKB_DATA_COPY
|
|
|| rpl->SkbStat == SKB_DMA_DIRECT))
|
|
{
|
|
if(rpl->SkbStat == SKB_DATA_COPY)
|
|
memcpy(skb->data, ReceiveDataPtr, Length);
|
|
|
|
/* Deliver frame to system */
|
|
rpl->Skb = NULL;
|
|
skb_trim(skb,Length);
|
|
skb->protocol = tr_type_trans(skb,dev);
|
|
netif_rx(skb);
|
|
dev->last_rx = jiffies;
|
|
}
|
|
}
|
|
else /* Invalid frame */
|
|
{
|
|
if(rpl->Skb != NULL)
|
|
dev_kfree_skb_irq(rpl->Skb);
|
|
|
|
/* Skip list. */
|
|
if(rpl->Status & RX_START_FRAME)
|
|
/* Frame start bit is set -> overflow. */
|
|
tp->MacStat.rx_errors++;
|
|
}
|
|
if (rpl->DMABuff)
|
|
pci_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, PCI_DMA_TODEVICE);
|
|
rpl->DMABuff = 0;
|
|
|
|
/* Allocate new skb for rpl */
|
|
rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
|
|
/* skb == NULL ? then use local buffer */
|
|
if(rpl->Skb == NULL)
|
|
{
|
|
rpl->SkbStat = SKB_UNAVAILABLE;
|
|
rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
|
|
rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
|
|
}
|
|
else /* skb != NULL */
|
|
{
|
|
rpl->Skb->dev = dev;
|
|
skb_put(rpl->Skb, tp->MaxPacketSize);
|
|
|
|
/* Data unreachable for DMA ? then use local buffer */
|
|
dmabuf = pci_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, PCI_DMA_FROMDEVICE);
|
|
if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
|
|
{
|
|
rpl->SkbStat = SKB_DATA_COPY;
|
|
rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
|
|
rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
|
|
}
|
|
else
|
|
{
|
|
/* DMA directly in skb->data */
|
|
rpl->SkbStat = SKB_DMA_DIRECT;
|
|
rpl->FragList[0].DataAddr = htonl(dmabuf);
|
|
rpl->MData = rpl->Skb->data;
|
|
rpl->DMABuff = dmabuf;
|
|
}
|
|
}
|
|
|
|
rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
|
|
rpl->FrameSize = 0;
|
|
|
|
/* Pass the last RPL back to the adapter */
|
|
tp->RplTail->FrameSize = 0;
|
|
|
|
/* Reset the CSTAT field in the list. */
|
|
tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
|
|
|
|
/* Current RPL becomes last one in list. */
|
|
tp->RplTail = tp->RplTail->NextRPLPtr;
|
|
|
|
/* Inform adapter about RPL valid. */
|
|
tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This function should be used whenever the status of any RPL must be
|
|
* modified by the driver, because the compiler may otherwise change the
|
|
* order of instructions such that writing the RPL status may be executed
|
|
* at an undesireable time. When this function is used, the status is
|
|
* always written when the function is called.
|
|
*/
|
|
static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
|
|
{
|
|
rpl->Status = Status;
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The function updates the statistic counters in mac->MacStat.
|
|
* It differtiates between directed and broadcast/multicast ( ==functional)
|
|
* frames.
|
|
*/
|
|
static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
|
|
unsigned int Length)
|
|
{
|
|
tp->MacStat.rx_packets++;
|
|
tp->MacStat.rx_bytes += Length;
|
|
|
|
/* Test functional bit */
|
|
if(DataPtr[2] & GROUP_BIT)
|
|
tp->MacStat.multicast++;
|
|
|
|
return;
|
|
}
|
|
|
|
static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
|
|
{
|
|
struct net_local *tp = netdev_priv(dev);
|
|
struct sockaddr *saddr = addr;
|
|
|
|
if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
|
|
printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
|
|
return -EIO;
|
|
}
|
|
memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
|
|
return 0;
|
|
}
|
|
|
|
#if TMS380TR_DEBUG > 0
|
|
/*
|
|
* Dump Packet (data)
|
|
*/
|
|
static void tms380tr_dump(unsigned char *Data, int length)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0, j = 0; i < length / 8; i++, j += 8)
|
|
{
|
|
printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
|
|
Data[j+0],Data[j+1],Data[j+2],Data[j+3],
|
|
Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
|
|
}
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
void tmsdev_term(struct net_device *dev)
|
|
{
|
|
struct net_local *tp;
|
|
|
|
tp = netdev_priv(dev);
|
|
pci_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
|
|
PCI_DMA_BIDIRECTIONAL);
|
|
}
|
|
|
|
int tmsdev_init(struct net_device *dev, unsigned long dmalimit,
|
|
struct pci_dev *pdev)
|
|
{
|
|
struct net_local *tms_local;
|
|
|
|
memset(dev->priv, 0, sizeof(struct net_local));
|
|
tms_local = netdev_priv(dev);
|
|
init_waitqueue_head(&tms_local->wait_for_tok_int);
|
|
tms_local->dmalimit = dmalimit;
|
|
tms_local->pdev = pdev;
|
|
tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local,
|
|
sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL);
|
|
if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit)
|
|
{
|
|
printk(KERN_INFO "%s: Memory not accessible for DMA\n",
|
|
dev->name);
|
|
tmsdev_term(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* These can be overridden by the card driver if needed */
|
|
dev->open = tms380tr_open;
|
|
dev->stop = tms380tr_close;
|
|
dev->do_ioctl = NULL;
|
|
dev->hard_start_xmit = tms380tr_send_packet;
|
|
dev->tx_timeout = tms380tr_timeout;
|
|
dev->watchdog_timeo = HZ;
|
|
dev->get_stats = tms380tr_get_stats;
|
|
dev->set_multicast_list = &tms380tr_set_multicast_list;
|
|
dev->set_mac_address = tms380tr_set_mac_address;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef MODULE
|
|
|
|
EXPORT_SYMBOL(tms380tr_open);
|
|
EXPORT_SYMBOL(tms380tr_close);
|
|
EXPORT_SYMBOL(tms380tr_interrupt);
|
|
EXPORT_SYMBOL(tmsdev_init);
|
|
EXPORT_SYMBOL(tmsdev_term);
|
|
EXPORT_SYMBOL(tms380tr_wait);
|
|
|
|
static struct module *TMS380_module = NULL;
|
|
|
|
int init_module(void)
|
|
{
|
|
printk(KERN_DEBUG "%s", version);
|
|
|
|
TMS380_module = &__this_module;
|
|
return 0;
|
|
}
|
|
|
|
void cleanup_module(void)
|
|
{
|
|
TMS380_module = NULL;
|
|
}
|
|
#endif
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|