forked from luck/tmp_suning_uos_patched
de70b4c87b
This patch contains the follwing cleanups: - make needlessly global code static - remove obsolete Emacs settings Signed-off-by: Adrian Bunk <bunk@stusta.de>
1983 lines
62 KiB
C
1983 lines
62 KiB
C
/* ibmtr.c: A shared-memory IBM Token Ring 16/4 driver for linux
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*
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* Written 1993 by Mark Swanson and Peter De Schrijver.
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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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* This device driver should work with Any IBM Token Ring Card that does
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* not use DMA.
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*
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* I used Donald Becker's (becker@scyld.com) device driver work
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* as a base for most of my initial work.
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*
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* Changes by Peter De Schrijver
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* (Peter.Deschrijver@linux.cc.kuleuven.ac.be) :
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*
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* + changed name to ibmtr.c in anticipation of other tr boards.
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* + changed reset code and adapter open code.
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* + added SAP open code.
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* + a first attempt to write interrupt, transmit and receive routines.
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*
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* Changes by David W. Morris (dwm@shell.portal.com) :
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* 941003 dwm: - Restructure tok_probe for multiple adapters, devices.
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* + Add comments, misc reorg for clarity.
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* + Flatten interrupt handler levels.
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*
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* Changes by Farzad Farid (farzy@zen.via.ecp.fr)
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* and Pascal Andre (andre@chimay.via.ecp.fr) (March 9 1995) :
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* + multi ring support clean up.
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* + RFC1042 compliance enhanced.
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*
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* Changes by Pascal Andre (andre@chimay.via.ecp.fr) (September 7 1995) :
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* + bug correction in tr_tx
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* + removed redundant information display
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* + some code reworking
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*
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* Changes by Michel Lespinasse (walken@via.ecp.fr),
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* Yann Doussot (doussot@via.ecp.fr) and Pascal Andre (andre@via.ecp.fr)
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* (February 18, 1996) :
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* + modified shared memory and mmio access port the driver to
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* alpha platform (structure access -> readb/writeb)
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*
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* Changes by Steve Kipisz (bungy@ibm.net or kipisz@vnet.ibm.com)
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* (January 18 1996):
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* + swapped WWOR and WWCR in ibmtr.h
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* + moved some init code from tok_probe into trdev_init. The
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* PCMCIA code can call trdev_init to complete initializing
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* the driver.
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* + added -DPCMCIA to support PCMCIA
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* + detecting PCMCIA Card Removal in interrupt handler. If
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* ISRP is FF, then a PCMCIA card has been removed
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* 10/2000 Burt needed a new method to avoid crashing the OS
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*
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* Changes by Paul Norton (pnorton@cts.com) :
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* + restructured the READ.LOG logic to prevent the transmit SRB
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* from being rudely overwritten before the transmit cycle is
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* complete. (August 15 1996)
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* + completed multiple adapter support. (November 20 1996)
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* + implemented csum_partial_copy in tr_rx and increased receive
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* buffer size and count. Minor fixes. (March 15, 1997)
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*
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* Changes by Christopher Turcksin <wabbit@rtfc.demon.co.uk>
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* + Now compiles ok as a module again.
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*
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* Changes by Paul Norton (pnorton@ieee.org) :
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* + moved the header manipulation code in tr_tx and tr_rx to
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* net/802/tr.c. (July 12 1997)
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* + add retry and timeout on open if cable disconnected. (May 5 1998)
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* + lifted 2000 byte mtu limit. now depends on shared-RAM size.
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* May 25 1998)
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* + can't allocate 2k recv buff at 8k shared-RAM. (20 October 1998)
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*
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* Changes by Joel Sloan (jjs@c-me.com) :
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* + disable verbose debug messages by default - to enable verbose
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* debugging, edit the IBMTR_DEBUG_MESSAGES define below
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*
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* Changes by Mike Phillips <phillim@amtrak.com> :
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* + Added extra #ifdef's to work with new PCMCIA Token Ring Code.
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* The PCMCIA code now just sets up the card so it can be recognized
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* by ibmtr_probe. Also checks allocated memory vs. on-board memory
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* for correct figure to use.
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*
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* Changes by Tim Hockin (thockin@isunix.it.ilstu.edu) :
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* + added spinlocks for SMP sanity (10 March 1999)
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*
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* Changes by Jochen Friedrich to enable RFC1469 Option 2 multicasting
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* i.e. using functional address C0 00 00 04 00 00 to transmit and
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* receive multicast packets.
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*
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* Changes by Mike Sullivan (based on original sram patch by Dave Grothe
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* to support windowing into on adapter shared ram.
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* i.e. Use LANAID to setup a PnP configuration with 16K RAM. Paging
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* will shift this 16K window over the entire available shared RAM.
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*
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* Changes by Peter De Schrijver (p2@mind.be) :
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* + fixed a problem with PCMCIA card removal
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*
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* Change by Mike Sullivan et al.:
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* + added turbo card support. No need to use lanaid to configure
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* the adapter into isa compatiblity mode.
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*
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* Changes by Burt Silverman to allow the computer to behave nicely when
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* a cable is pulled or not in place, or a PCMCIA card is removed hot.
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*/
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/* change the define of IBMTR_DEBUG_MESSAGES to a nonzero value
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in the event that chatty debug messages are desired - jjs 12/30/98 */
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#define IBMTR_DEBUG_MESSAGES 0
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#include <linux/module.h>
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#ifdef PCMCIA /* required for ibmtr_cs.c to build */
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#undef MODULE /* yes, really */
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#undef ENABLE_PAGING
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#else
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#define ENABLE_PAGING 1
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#endif
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#define FALSE 0
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#define TRUE (!FALSE)
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/* changes the output format of driver initialization */
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#define TR_VERBOSE 0
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/* some 95 OS send many non UI frame; this allow removing the warning */
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#define TR_FILTERNONUI 1
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#include <linux/ioport.h>
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#include <linux/netdevice.h>
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#include <linux/ip.h>
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#include <linux/trdevice.h>
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#include <linux/ibmtr.h>
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#include <net/checksum.h>
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#include <asm/io.h>
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#define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args)
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#define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args)
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/* version and credits */
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#ifndef PCMCIA
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static char version[] __initdata =
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"\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n"
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" v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n"
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" v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n"
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" v2.2.1 02/08/00 Mike Sullivan <sullivam@us.ibm.com>\n"
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" v2.2.2 07/27/00 Burt Silverman <burts@us.ibm.com>\n"
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" v2.4.0 03/01/01 Mike Sullivan <sullivan@us.ibm.com>\n";
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#endif
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/* this allows displaying full adapter information */
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static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
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static char pcchannelid[] __devinitdata = {
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0x05, 0x00, 0x04, 0x09,
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0x04, 0x03, 0x04, 0x0f,
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0x03, 0x06, 0x03, 0x01,
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0x03, 0x01, 0x03, 0x00,
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0x03, 0x09, 0x03, 0x09,
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0x03, 0x00, 0x02, 0x00
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};
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static char mcchannelid[] __devinitdata = {
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0x04, 0x0d, 0x04, 0x01,
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0x05, 0x02, 0x05, 0x03,
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0x03, 0x06, 0x03, 0x03,
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0x05, 0x08, 0x03, 0x04,
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0x03, 0x05, 0x03, 0x01,
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0x03, 0x08, 0x02, 0x00
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};
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static char __devinit *adapter_def(char type)
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{
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switch (type) {
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case 0xF: return "PC Adapter | PC Adapter II | Adapter/A";
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case 0xE: return "16/4 Adapter | 16/4 Adapter/A (long)";
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case 0xD: return "16/4 Adapter/A (short) | 16/4 ISA-16 Adapter";
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case 0xC: return "Auto 16/4 Adapter";
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default: return "adapter (unknown type)";
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};
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};
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#define TRC_INIT 0x01 /* Trace initialization & PROBEs */
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#define TRC_INITV 0x02 /* verbose init trace points */
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static unsigned char ibmtr_debug_trace = 0;
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static int ibmtr_probe(struct net_device *dev);
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static int ibmtr_probe1(struct net_device *dev, int ioaddr);
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static unsigned char get_sram_size(struct tok_info *adapt_info);
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static int trdev_init(struct net_device *dev);
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static int tok_open(struct net_device *dev);
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static int tok_init_card(struct net_device *dev);
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static void tok_open_adapter(unsigned long dev_addr);
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static void open_sap(unsigned char type, struct net_device *dev);
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static void tok_set_multicast_list(struct net_device *dev);
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static int tok_send_packet(struct sk_buff *skb, struct net_device *dev);
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static int tok_close(struct net_device *dev);
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static irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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static void initial_tok_int(struct net_device *dev);
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static void tr_tx(struct net_device *dev);
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static void tr_rx(struct net_device *dev);
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static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
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static void tok_rerun(unsigned long dev_addr);
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static void ibmtr_readlog(struct net_device *dev);
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static struct net_device_stats *tok_get_stats(struct net_device *dev);
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static int ibmtr_change_mtu(struct net_device *dev, int mtu);
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static void find_turbo_adapters(int *iolist);
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static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = {
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0xa20, 0xa24, 0, 0, 0
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};
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static int __devinitdata turbo_io[IBMTR_MAX_ADAPTERS] = {0};
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static int __devinitdata turbo_irq[IBMTR_MAX_ADAPTERS] = {0};
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static int __devinitdata turbo_searched = 0;
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#ifndef PCMCIA
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static __u32 ibmtr_mem_base __initdata = 0xd0000;
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#endif
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static void __devinit PrtChanID(char *pcid, short stride)
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{
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short i, j;
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for (i = 0, j = 0; i < 24; i++, j += stride)
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printk("%1x", ((int) pcid[j]) & 0x0f);
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printk("\n");
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}
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static void __devinit HWPrtChanID(void __iomem *pcid, short stride)
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{
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short i, j;
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for (i = 0, j = 0; i < 24; i++, j += stride)
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printk("%1x", ((int) readb(pcid + j)) & 0x0f);
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printk("\n");
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}
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/* We have to ioremap every checked address, because isa_readb is
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* going away.
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*/
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static void __devinit find_turbo_adapters(int *iolist)
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{
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int ram_addr;
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int index=0;
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void __iomem *chanid;
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int found_turbo=0;
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unsigned char *tchanid, ctemp;
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int i, j;
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unsigned long jif;
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void __iomem *ram_mapped ;
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if (turbo_searched == 1) return;
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turbo_searched=1;
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for (ram_addr=0xC0000; ram_addr < 0xE0000; ram_addr+=0x2000) {
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__u32 intf_tbl=0;
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found_turbo=1;
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ram_mapped = ioremap((u32)ram_addr,0x1fff) ;
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if (ram_mapped==NULL)
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continue ;
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chanid=(CHANNEL_ID + ram_mapped);
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tchanid=pcchannelid;
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ctemp=readb(chanid) & 0x0f;
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if (ctemp != *tchanid) continue;
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for (i=2,j=1; i<=46; i=i+2,j++) {
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if ((readb(chanid+i) & 0x0f) != tchanid[j]){
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found_turbo=0;
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break;
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}
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}
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if (!found_turbo) continue;
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writeb(0x90, ram_mapped+0x1E01);
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for(i=2; i<0x0f; i++) {
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writeb(0x00, ram_mapped+0x1E01+i);
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}
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writeb(0x00, ram_mapped+0x1E01);
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for(jif=jiffies+TR_BUSY_INTERVAL; time_before_eq(jiffies,jif););
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intf_tbl=ntohs(readw(ram_mapped+ACA_OFFSET+ACA_RW+WRBR_EVEN));
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if (intf_tbl) {
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#if IBMTR_DEBUG_MESSAGES
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printk("ibmtr::find_turbo_adapters, Turbo found at "
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"ram_addr %x\n",ram_addr);
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printk("ibmtr::find_turbo_adapters, interface_table ");
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for(i=0; i<6; i++) {
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printk("%x:",readb(ram_addr+intf_tbl+i));
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}
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printk("\n");
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#endif
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turbo_io[index]=ntohs(readw(ram_mapped+intf_tbl+4));
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turbo_irq[index]=readb(ram_mapped+intf_tbl+3);
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outb(0, turbo_io[index] + ADAPTRESET);
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for(jif=jiffies+TR_RST_TIME;time_before_eq(jiffies,jif););
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outb(0, turbo_io[index] + ADAPTRESETREL);
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index++;
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continue;
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}
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#if IBMTR_DEBUG_MESSAGES
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printk("ibmtr::find_turbo_adapters, ibmtr card found at"
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" %x but not a Turbo model\n",ram_addr);
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#endif
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iounmap(ram_mapped) ;
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} /* for */
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for(i=0; i<IBMTR_MAX_ADAPTERS; i++) {
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if(!turbo_io[i]) break;
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for (j=0; j<IBMTR_MAX_ADAPTERS; j++) {
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if ( iolist[j] && iolist[j] != turbo_io[i]) continue;
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iolist[j]=turbo_io[i];
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break;
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}
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}
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}
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static void ibmtr_cleanup_card(struct net_device *dev)
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{
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if (dev->base_addr) {
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outb(0,dev->base_addr+ADAPTRESET);
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schedule_timeout(TR_RST_TIME); /* wait 50ms */
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outb(0,dev->base_addr+ADAPTRESETREL);
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}
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#ifndef PCMCIA
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free_irq(dev->irq, dev);
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release_region(dev->base_addr, IBMTR_IO_EXTENT);
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{
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struct tok_info *ti = (struct tok_info *) dev->priv;
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iounmap(ti->mmio);
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iounmap(ti->sram_virt);
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}
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#endif
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}
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int ibmtr_probe_card(struct net_device *dev)
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{
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int err = ibmtr_probe(dev);
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if (!err) {
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err = register_netdev(dev);
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if (err)
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ibmtr_cleanup_card(dev);
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}
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return err;
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}
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/****************************************************************************
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* ibmtr_probe(): Routine specified in the network device structure
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* to probe for an IBM Token Ring Adapter. Routine outline:
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* I. Interrogate hardware to determine if an adapter exists
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* and what the speeds and feeds are
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* II. Setup data structures to control execution based upon
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* adapter characteristics.
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*
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* We expect ibmtr_probe to be called once for each device entry
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* which references it.
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****************************************************************************/
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static int ibmtr_probe(struct net_device *dev)
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{
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int i;
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int base_addr = dev->base_addr;
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if (base_addr && base_addr <= 0x1ff) /* Don't probe at all. */
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return -ENXIO;
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if (base_addr > 0x1ff) { /* Check a single specified location. */
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if (!ibmtr_probe1(dev, base_addr)) return 0;
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return -ENODEV;
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}
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find_turbo_adapters(ibmtr_portlist);
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for (i = 0; ibmtr_portlist[i]; i++) {
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int ioaddr = ibmtr_portlist[i];
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if (!ibmtr_probe1(dev, ioaddr)) return 0;
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}
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return -ENODEV;
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}
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/*****************************************************************************/
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static int __devinit ibmtr_probe1(struct net_device *dev, int PIOaddr)
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{
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unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0;
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void __iomem * t_mmio = NULL;
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struct tok_info *ti = dev->priv;
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void __iomem *cd_chanid;
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unsigned char *tchanid, ctemp;
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#ifndef PCMCIA
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unsigned char t_irq=0;
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unsigned long timeout;
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static int version_printed;
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#endif
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/* Query the adapter PIO base port which will return
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* indication of where MMIO was placed. We also have a
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* coded interrupt number.
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*/
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segment = inb(PIOaddr);
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if (segment < 0x40 || segment > 0xe0) {
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/* Out of range values so we'll assume non-existent IO device
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* but this is not necessarily a problem, esp if a turbo
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* adapter is being used. */
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#if IBMTR_DEBUG_MESSAGES
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DPRINTK("ibmtr_probe1(): unhappy that inb(0x%X) == 0x%X, "
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"Hardware Problem?\n",PIOaddr,segment);
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#endif
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return -ENODEV;
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}
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/*
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* Compute the linear base address of the MMIO area
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* as LINUX doesn't care about segments
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*/
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t_mmio = ioremap(((__u32) (segment & 0xfc) << 11) + 0x80000,2048);
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if (!t_mmio) {
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DPRINTK("Cannot remap mmiobase memory area") ;
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return -ENODEV ;
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}
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intr = segment & 0x03; /* low bits is coded interrupt # */
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if (ibmtr_debug_trace & TRC_INIT)
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DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %p intr: %d\n"
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, PIOaddr, (int) segment, t_mmio, (int) intr);
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/*
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* Now we will compare expected 'channelid' strings with
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* what we is there to learn of ISA/MCA or not TR card
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*/
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#ifdef PCMCIA
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iounmap(t_mmio);
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t_mmio = ti->mmio; /*BMS to get virtual address */
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irq = ti->irq; /*BMS to display the irq! */
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#endif
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cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */
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tchanid = pcchannelid;
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cardpresent = TR_ISA; /* try ISA */
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/* Suboptimize knowing first byte different */
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ctemp = readb(cd_chanid) & 0x0f;
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if (ctemp != *tchanid) { /* NOT ISA card, try MCA */
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tchanid = mcchannelid;
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cardpresent = TR_MCA;
|
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if (ctemp != *tchanid) /* Neither ISA nor MCA */
|
|
cardpresent = NOTOK;
|
|
}
|
|
if (cardpresent != NOTOK) {
|
|
/* Know presumed type, try rest of ID */
|
|
for (i = 2, j = 1; i <= 46; i = i + 2, j++) {
|
|
if( (readb(cd_chanid+i)&0x0f) == tchanid[j]) continue;
|
|
/* match failed, not TR card */
|
|
cardpresent = NOTOK;
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* If we have an ISA board check for the ISA P&P version,
|
|
* as it has different IRQ settings
|
|
*/
|
|
if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e))
|
|
cardpresent = TR_ISAPNP;
|
|
if (cardpresent == NOTOK) { /* "channel_id" did not match, report */
|
|
if (!(ibmtr_debug_trace & TRC_INIT)) {
|
|
#ifndef PCMCIA
|
|
iounmap(t_mmio);
|
|
#endif
|
|
return -ENODEV;
|
|
}
|
|
DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n",
|
|
PIOaddr);
|
|
DPRINTK("Expected for ISA: ");
|
|
PrtChanID(pcchannelid, 1);
|
|
DPRINTK(" found: ");
|
|
/* BMS Note that this can be misleading, when hardware is flaky, because you
|
|
are reading it a second time here. So with my flaky hardware, I'll see my-
|
|
self in this block, with the HW ID matching the ISA ID exactly! */
|
|
HWPrtChanID(cd_chanid, 2);
|
|
DPRINTK("Expected for MCA: ");
|
|
PrtChanID(mcchannelid, 1);
|
|
}
|
|
/* Now, setup some of the pl0 buffers for this driver.. */
|
|
/* If called from PCMCIA, it is already set up, so no need to
|
|
waste the memory, just use the existing structure */
|
|
#ifndef PCMCIA
|
|
ti->mmio = t_mmio;
|
|
for (i = 0; i < IBMTR_MAX_ADAPTERS; i++) {
|
|
if (turbo_io[i] != PIOaddr)
|
|
continue;
|
|
#if IBMTR_DEBUG_MESSAGES
|
|
printk("ibmtr::tr_probe1, setting PIOaddr %x to Turbo\n",
|
|
PIOaddr);
|
|
#endif
|
|
ti->turbo = 1;
|
|
t_irq = turbo_irq[i];
|
|
}
|
|
#endif /* !PCMCIA */
|
|
ti->readlog_pending = 0;
|
|
init_waitqueue_head(&ti->wait_for_reset);
|
|
|
|
/* if PCMCIA, the card can be recognized as either TR_ISA or TR_ISAPNP
|
|
* depending which card is inserted. */
|
|
|
|
#ifndef PCMCIA
|
|
switch (cardpresent) {
|
|
case TR_ISA:
|
|
if (intr == 0) irq = 9; /* irq2 really is irq9 */
|
|
if (intr == 1) irq = 3;
|
|
if (intr == 2) irq = 6;
|
|
if (intr == 3) irq = 7;
|
|
ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
|
|
break;
|
|
case TR_MCA:
|
|
if (intr == 0) irq = 9;
|
|
if (intr == 1) irq = 3;
|
|
if (intr == 2) irq = 10;
|
|
if (intr == 3) irq = 11;
|
|
ti->global_int_enable = 0;
|
|
ti->adapter_int_enable = 0;
|
|
ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
|
|
break;
|
|
case TR_ISAPNP:
|
|
if (!t_irq) {
|
|
if (intr == 0) irq = 9;
|
|
if (intr == 1) irq = 3;
|
|
if (intr == 2) irq = 10;
|
|
if (intr == 3) irq = 11;
|
|
} else
|
|
irq=t_irq;
|
|
timeout = jiffies + TR_SPIN_INTERVAL;
|
|
while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){
|
|
if (!time_after(jiffies, timeout)) continue;
|
|
DPRINTK( "Hardware timeout during initialization.\n");
|
|
iounmap(t_mmio);
|
|
kfree(ti);
|
|
return -ENODEV;
|
|
}
|
|
ti->sram_phys =
|
|
((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12);
|
|
ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
|
|
break;
|
|
} /*end switch (cardpresent) */
|
|
#endif /*not PCMCIA */
|
|
|
|
if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
|
|
DPRINTK("irq=%d", irq);
|
|
printk(", sram_phys=0x%x", ti->sram_phys);
|
|
if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */
|
|
DPRINTK(", ti->mmio=%p", ti->mmio);
|
|
printk(", segment=%02X", segment);
|
|
}
|
|
printk(".\n");
|
|
}
|
|
|
|
/* Get hw address of token ring card */
|
|
j = 0;
|
|
for (i = 0; i < 0x18; i = i + 2) {
|
|
/* technical reference states to do this */
|
|
temp = readb(ti->mmio + AIP + i) & 0x0f;
|
|
ti->hw_address[j] = temp;
|
|
if (j & 1)
|
|
dev->dev_addr[(j / 2)] =
|
|
ti->hw_address[j]+ (ti->hw_address[j - 1] << 4);
|
|
++j;
|
|
}
|
|
/* get Adapter type: 'F' = Adapter/A, 'E' = 16/4 Adapter II,... */
|
|
ti->adapter_type = readb(ti->mmio + AIPADAPTYPE);
|
|
|
|
/* get Data Rate: F=4Mb, E=16Mb, D=4Mb & 16Mb ?? */
|
|
ti->data_rate = readb(ti->mmio + AIPDATARATE);
|
|
|
|
/* Get Early Token Release support?: F=no, E=4Mb, D=16Mb, C=4&16Mb */
|
|
ti->token_release = readb(ti->mmio + AIPEARLYTOKEN);
|
|
|
|
/* How much shared RAM is on adapter ? */
|
|
if (ti->turbo) {
|
|
ti->avail_shared_ram=127;
|
|
} else {
|
|
ti->avail_shared_ram = get_sram_size(ti);/*in 512 byte units */
|
|
}
|
|
/* We need to set or do a bunch of work here based on previous results*/
|
|
/* Support paging? What sizes?: F=no, E=16k, D=32k, C=16 & 32k */
|
|
ti->shared_ram_paging = readb(ti->mmio + AIPSHRAMPAGE);
|
|
|
|
/* Available DHB 4Mb size: F=2048, E=4096, D=4464 */
|
|
switch (readb(ti->mmio + AIP4MBDHB)) {
|
|
case 0xe: ti->dhb_size4mb = 4096; break;
|
|
case 0xd: ti->dhb_size4mb = 4464; break;
|
|
default: ti->dhb_size4mb = 2048; break;
|
|
}
|
|
|
|
/* Available DHB 16Mb size: F=2048, E=4096, D=8192, C=16384, B=17960 */
|
|
switch (readb(ti->mmio + AIP16MBDHB)) {
|
|
case 0xe: ti->dhb_size16mb = 4096; break;
|
|
case 0xd: ti->dhb_size16mb = 8192; break;
|
|
case 0xc: ti->dhb_size16mb = 16384; break;
|
|
case 0xb: ti->dhb_size16mb = 17960; break;
|
|
default: ti->dhb_size16mb = 2048; break;
|
|
}
|
|
|
|
/* We must figure out how much shared memory space this adapter
|
|
* will occupy so that if there are two adapters we can fit both
|
|
* in. Given a choice, we will limit this adapter to 32K. The
|
|
* maximum space will will use for two adapters is 64K so if the
|
|
* adapter we are working on demands 64K (it also doesn't support
|
|
* paging), then only one adapter can be supported.
|
|
*/
|
|
|
|
/*
|
|
* determine how much of total RAM is mapped into PC space
|
|
*/
|
|
ti->mapped_ram_size= /*sixteen to onehundredtwentyeight 512byte blocks*/
|
|
1<< ((readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03) + 4);
|
|
ti->page_mask = 0;
|
|
if (ti->turbo) ti->page_mask=0xf0;
|
|
else if (ti->shared_ram_paging == 0xf); /* No paging in adapter */
|
|
else {
|
|
#ifdef ENABLE_PAGING
|
|
unsigned char pg_size = 0;
|
|
/* BMS: page size: PCMCIA, use configuration register;
|
|
ISAPNP, use LANAIDC config tool from www.ibm.com */
|
|
switch (ti->shared_ram_paging) {
|
|
case 0xf:
|
|
break;
|
|
case 0xe:
|
|
ti->page_mask = (ti->mapped_ram_size == 32) ? 0xc0 : 0;
|
|
pg_size = 32; /* 16KB page size */
|
|
break;
|
|
case 0xd:
|
|
ti->page_mask = (ti->mapped_ram_size == 64) ? 0x80 : 0;
|
|
pg_size = 64; /* 32KB page size */
|
|
break;
|
|
case 0xc:
|
|
switch (ti->mapped_ram_size) {
|
|
case 32:
|
|
ti->page_mask = 0xc0;
|
|
pg_size = 32;
|
|
break;
|
|
case 64:
|
|
ti->page_mask = 0x80;
|
|
pg_size = 64;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
DPRINTK("Unknown shared ram paging info %01X\n",
|
|
ti->shared_ram_paging);
|
|
iounmap(t_mmio);
|
|
kfree(ti);
|
|
return -ENODEV;
|
|
break;
|
|
} /*end switch shared_ram_paging */
|
|
|
|
if (ibmtr_debug_trace & TRC_INIT)
|
|
DPRINTK("Shared RAM paging code: %02X, "
|
|
"mapped RAM size: %dK, shared RAM size: %dK, "
|
|
"page mask: %02X\n:",
|
|
ti->shared_ram_paging, ti->mapped_ram_size / 2,
|
|
ti->avail_shared_ram / 2, ti->page_mask);
|
|
#endif /*ENABLE_PAGING */
|
|
}
|
|
|
|
#ifndef PCMCIA
|
|
/* finish figuring the shared RAM address */
|
|
if (cardpresent == TR_ISA) {
|
|
static __u32 ram_bndry_mask[] =
|
|
{ 0xffffe000, 0xffffc000, 0xffff8000, 0xffff0000 };
|
|
__u32 new_base, rrr_32, chk_base, rbm;
|
|
|
|
rrr_32=readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03;
|
|
rbm = ram_bndry_mask[rrr_32];
|
|
new_base = (ibmtr_mem_base + (~rbm)) & rbm;/* up to boundary */
|
|
chk_base = new_base + (ti->mapped_ram_size << 9);
|
|
if (chk_base > (ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE)) {
|
|
DPRINTK("Shared RAM for this adapter (%05x) exceeds "
|
|
"driver limit (%05x), adapter not started.\n",
|
|
chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
|
|
iounmap(t_mmio);
|
|
kfree(ti);
|
|
return -ENODEV;
|
|
} else { /* seems cool, record what we have figured out */
|
|
ti->sram_base = new_base >> 12;
|
|
ibmtr_mem_base = chk_base;
|
|
}
|
|
}
|
|
else ti->sram_base = ti->sram_phys >> 12;
|
|
|
|
/* The PCMCIA has already got the interrupt line and the io port,
|
|
so no chance of anybody else getting it - MLP */
|
|
if (request_irq(dev->irq = irq, &tok_interrupt, 0, "ibmtr", dev) != 0) {
|
|
DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
|
|
irq);
|
|
iounmap(t_mmio);
|
|
kfree(ti);
|
|
return -ENODEV;
|
|
}
|
|
/*?? Now, allocate some of the PIO PORTs for this driver.. */
|
|
/* record PIOaddr range as busy */
|
|
if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) {
|
|
DPRINTK("Could not grab PIO range. Halting driver.\n");
|
|
free_irq(dev->irq, dev);
|
|
iounmap(t_mmio);
|
|
kfree(ti);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (!version_printed++) {
|
|
printk(version);
|
|
}
|
|
#endif /* !PCMCIA */
|
|
DPRINTK("%s %s found\n",
|
|
channel_def[cardpresent - 1], adapter_def(ti->adapter_type));
|
|
DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n",
|
|
irq, PIOaddr, ti->mapped_ram_size / 2);
|
|
DPRINTK("Hardware address : %02X:%02X:%02X:%02X:%02X:%02X\n",
|
|
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
|
|
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
|
|
if (ti->page_mask)
|
|
DPRINTK("Shared RAM paging enabled. "
|
|
"Page size: %uK Shared Ram size %dK\n",
|
|
((ti->page_mask^0xff)+1) >>2, ti->avail_shared_ram / 2);
|
|
else
|
|
DPRINTK("Shared RAM paging disabled. ti->page_mask %x\n",
|
|
ti->page_mask);
|
|
|
|
/* Calculate the maximum DHB we can use */
|
|
/* two cases where avail_shared_ram doesn't equal mapped_ram_size:
|
|
1. avail_shared_ram is 127 but mapped_ram_size is 128 (typical)
|
|
2. user has configured adapter for less than avail_shared_ram
|
|
but is not using paging (she should use paging, I believe)
|
|
*/
|
|
if (!ti->page_mask) {
|
|
ti->avail_shared_ram=
|
|
min(ti->mapped_ram_size,ti->avail_shared_ram);
|
|
}
|
|
|
|
switch (ti->avail_shared_ram) {
|
|
case 16: /* 8KB shared RAM */
|
|
ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)2048);
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=2;
|
|
ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)2048);
|
|
ti->rbuf_len16 = 1032;
|
|
ti->rbuf_cnt16=2;
|
|
break;
|
|
case 32: /* 16KB shared RAM */
|
|
ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=4;
|
|
ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)4096);
|
|
ti->rbuf_len16 = 1032; /*1024 usable */
|
|
ti->rbuf_cnt16=4;
|
|
break;
|
|
case 64: /* 32KB shared RAM */
|
|
ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=6;
|
|
ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)10240);
|
|
ti->rbuf_len16 = 1032;
|
|
ti->rbuf_cnt16=6;
|
|
break;
|
|
case 127: /* 63.5KB shared RAM */
|
|
ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=6;
|
|
ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)16384);
|
|
ti->rbuf_len16 = 1032;
|
|
ti->rbuf_cnt16=16;
|
|
break;
|
|
case 128: /* 64KB shared RAM */
|
|
ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=6;
|
|
ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)17960);
|
|
ti->rbuf_len16 = 1032;
|
|
ti->rbuf_cnt16=16;
|
|
break;
|
|
default:
|
|
ti->dhb_size4mb = 2048;
|
|
ti->rbuf_len4 = 1032;
|
|
ti->rbuf_cnt4=2;
|
|
ti->dhb_size16mb = 2048;
|
|
ti->rbuf_len16 = 1032;
|
|
ti->rbuf_cnt16=2;
|
|
break;
|
|
}
|
|
/* this formula is not smart enough for the paging case
|
|
ti->rbuf_cnt<x> = (ti->avail_shared_ram * BLOCKSZ - ADAPT_PRIVATE -
|
|
ARBLENGTH - SSBLENGTH - DLC_MAX_SAP * SAPLENGTH -
|
|
DLC_MAX_STA * STALENGTH - ti->dhb_size<x>mb * NUM_DHB -
|
|
SRBLENGTH - ASBLENGTH) / ti->rbuf_len<x>;
|
|
*/
|
|
ti->maxmtu16 = (ti->rbuf_len16 - 8) * ti->rbuf_cnt16 - TR_HLEN;
|
|
ti->maxmtu4 = (ti->rbuf_len4 - 8) * ti->rbuf_cnt4 - TR_HLEN;
|
|
/*BMS assuming 18 bytes of Routing Information (usually works) */
|
|
DPRINTK("Maximum Receive Internet Protocol MTU 16Mbps: %d, 4Mbps: %d\n",
|
|
ti->maxmtu16, ti->maxmtu4);
|
|
|
|
dev->base_addr = PIOaddr; /* set the value for device */
|
|
dev->mem_start = ti->sram_base << 12;
|
|
dev->mem_end = dev->mem_start + (ti->mapped_ram_size << 9) - 1;
|
|
trdev_init(dev);
|
|
return 0; /* Return 0 to indicate we have found a Token Ring card. */
|
|
} /*ibmtr_probe1() */
|
|
|
|
/*****************************************************************************/
|
|
|
|
/* query the adapter for the size of shared RAM */
|
|
/* the function returns the RAM size in units of 512 bytes */
|
|
|
|
static unsigned char __devinit get_sram_size(struct tok_info *adapt_info)
|
|
{
|
|
unsigned char avail_sram_code;
|
|
static unsigned char size_code[] = { 0, 16, 32, 64, 127, 128 };
|
|
/* Adapter gives
|
|
'F' -- use RRR bits 3,2
|
|
'E' -- 8kb 'D' -- 16kb
|
|
'C' -- 32kb 'A' -- 64KB
|
|
'B' - 64KB less 512 bytes at top
|
|
(WARNING ... must zero top bytes in INIT */
|
|
|
|
avail_sram_code = 0xf - readb(adapt_info->mmio + AIPAVAILSHRAM);
|
|
if (avail_sram_code) return size_code[avail_sram_code];
|
|
else /* for code 'F', must compute size from RRR(3,2) bits */
|
|
return 1 <<
|
|
((readb(adapt_info->mmio+ACA_OFFSET+ACA_RW+RRR_ODD)>>2&3)+4);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int __devinit trdev_init(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
|
|
SET_PAGE(ti->srb_page);
|
|
ti->open_failure = NO ;
|
|
dev->open = tok_open;
|
|
dev->stop = tok_close;
|
|
dev->hard_start_xmit = tok_send_packet;
|
|
dev->get_stats = tok_get_stats;
|
|
dev->set_multicast_list = tok_set_multicast_list;
|
|
dev->change_mtu = ibmtr_change_mtu;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int tok_init_card(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti;
|
|
short PIOaddr;
|
|
unsigned long i;
|
|
|
|
PIOaddr = dev->base_addr;
|
|
ti = (struct tok_info *) dev->priv;
|
|
/* Special processing for first interrupt after reset */
|
|
ti->do_tok_int = FIRST_INT;
|
|
/* Reset adapter */
|
|
writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
|
|
outb(0, PIOaddr + ADAPTRESET);
|
|
|
|
current->state=TASK_UNINTERRUPTIBLE;
|
|
schedule_timeout(TR_RST_TIME); /* wait 50ms */
|
|
|
|
outb(0, PIOaddr + ADAPTRESETREL);
|
|
#ifdef ENABLE_PAGING
|
|
if (ti->page_mask)
|
|
writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN);
|
|
#endif
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ);
|
|
return i? 0 : -EAGAIN;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
static int tok_open(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
int i;
|
|
|
|
/*the case we were left in a failure state during a previous open */
|
|
if (ti->open_failure == YES) {
|
|
DPRINTK("Last time you were disconnected, how about now?\n");
|
|
printk("You can't insert with an ICS connector half-cocked.\n");
|
|
}
|
|
|
|
ti->open_status = CLOSED; /* CLOSED or OPEN */
|
|
ti->sap_status = CLOSED; /* CLOSED or OPEN */
|
|
ti->open_failure = NO; /* NO or YES */
|
|
ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */
|
|
|
|
ti->sram_phys &= ~1; /* to reverse what we do in tok_close */
|
|
/* init the spinlock */
|
|
spin_lock_init(&ti->lock);
|
|
init_timer(&ti->tr_timer);
|
|
|
|
i = tok_init_card(dev);
|
|
if (i) return i;
|
|
|
|
while (1){
|
|
tok_open_adapter((unsigned long) dev);
|
|
i= interruptible_sleep_on_timeout(&ti->wait_for_reset, 25 * HZ);
|
|
/* sig catch: estimate opening adapter takes more than .5 sec*/
|
|
if (i>(245*HZ)/10) break; /* fancier than if (i==25*HZ) */
|
|
if (i==0) break;
|
|
if (ti->open_status == OPEN && ti->sap_status==OPEN) {
|
|
netif_start_queue(dev);
|
|
DPRINTK("Adapter is up and running\n");
|
|
return 0;
|
|
}
|
|
current->state=TASK_INTERRUPTIBLE;
|
|
i=schedule_timeout(TR_RETRY_INTERVAL); /* wait 30 seconds */
|
|
if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */
|
|
}
|
|
outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/
|
|
DPRINTK("TERMINATED via signal\n"); /*BMS useful */
|
|
return -EAGAIN;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define COMMAND_OFST 0
|
|
#define OPEN_OPTIONS_OFST 8
|
|
#define NUM_RCV_BUF_OFST 24
|
|
#define RCV_BUF_LEN_OFST 26
|
|
#define DHB_LENGTH_OFST 28
|
|
#define NUM_DHB_OFST 30
|
|
#define DLC_MAX_SAP_OFST 32
|
|
#define DLC_MAX_STA_OFST 33
|
|
|
|
static void tok_open_adapter(unsigned long dev_addr)
|
|
{
|
|
struct net_device *dev = (struct net_device *) dev_addr;
|
|
struct tok_info *ti;
|
|
int i;
|
|
|
|
ti = (struct tok_info *) dev->priv;
|
|
SET_PAGE(ti->init_srb_page);
|
|
writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
|
|
for (i = 0; i < sizeof(struct dir_open_adapter); i++)
|
|
writeb(0, ti->init_srb + i);
|
|
writeb(DIR_OPEN_ADAPTER, ti->init_srb + COMMAND_OFST);
|
|
writew(htons(OPEN_PASS_BCON_MAC), ti->init_srb + OPEN_OPTIONS_OFST);
|
|
if (ti->ring_speed == 16) {
|
|
writew(htons(ti->dhb_size16mb), ti->init_srb + DHB_LENGTH_OFST);
|
|
writew(htons(ti->rbuf_cnt16), ti->init_srb + NUM_RCV_BUF_OFST);
|
|
writew(htons(ti->rbuf_len16), ti->init_srb + RCV_BUF_LEN_OFST);
|
|
} else {
|
|
writew(htons(ti->dhb_size4mb), ti->init_srb + DHB_LENGTH_OFST);
|
|
writew(htons(ti->rbuf_cnt4), ti->init_srb + NUM_RCV_BUF_OFST);
|
|
writew(htons(ti->rbuf_len4), ti->init_srb + RCV_BUF_LEN_OFST);
|
|
}
|
|
writeb(NUM_DHB, /* always 2 */ ti->init_srb + NUM_DHB_OFST);
|
|
writeb(DLC_MAX_SAP, ti->init_srb + DLC_MAX_SAP_OFST);
|
|
writeb(DLC_MAX_STA, ti->init_srb + DLC_MAX_STA_OFST);
|
|
ti->srb = ti->init_srb; /* We use this one in the interrupt handler */
|
|
ti->srb_page = ti->init_srb_page;
|
|
DPRINTK("Opening adapter: Xmit bfrs: %d X %d, Rcv bfrs: %d X %d\n",
|
|
readb(ti->init_srb + NUM_DHB_OFST),
|
|
ntohs(readw(ti->init_srb + DHB_LENGTH_OFST)),
|
|
ntohs(readw(ti->init_srb + NUM_RCV_BUF_OFST)),
|
|
ntohs(readw(ti->init_srb + RCV_BUF_LEN_OFST)));
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void open_sap(unsigned char type, struct net_device *dev)
|
|
{
|
|
int i;
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
|
|
SET_PAGE(ti->srb_page);
|
|
for (i = 0; i < sizeof(struct dlc_open_sap); i++)
|
|
writeb(0, ti->srb + i);
|
|
|
|
#define MAX_I_FIELD_OFST 14
|
|
#define SAP_VALUE_OFST 16
|
|
#define SAP_OPTIONS_OFST 17
|
|
#define STATION_COUNT_OFST 18
|
|
|
|
writeb(DLC_OPEN_SAP, ti->srb + COMMAND_OFST);
|
|
writew(htons(MAX_I_FIELD), ti->srb + MAX_I_FIELD_OFST);
|
|
writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY, ti->srb+ SAP_OPTIONS_OFST);
|
|
writeb(SAP_OPEN_STATION_CNT, ti->srb + STATION_COUNT_OFST);
|
|
writeb(type, ti->srb + SAP_VALUE_OFST);
|
|
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void tok_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
struct dev_mc_list *mclist;
|
|
unsigned char address[4];
|
|
|
|
int i;
|
|
|
|
/*BMS the next line is CRUCIAL or you may be sad when you */
|
|
/*BMS ifconfig tr down or hot unplug a PCMCIA card ??hownowbrowncow*/
|
|
if (/*BMSHELPdev->start == 0 ||*/ ti->open_status != OPEN) return;
|
|
address[0] = address[1] = address[2] = address[3] = 0;
|
|
mclist = dev->mc_list;
|
|
for (i = 0; i < dev->mc_count; i++) {
|
|
address[0] |= mclist->dmi_addr[2];
|
|
address[1] |= mclist->dmi_addr[3];
|
|
address[2] |= mclist->dmi_addr[4];
|
|
address[3] |= mclist->dmi_addr[5];
|
|
mclist = mclist->next;
|
|
}
|
|
SET_PAGE(ti->srb_page);
|
|
for (i = 0; i < sizeof(struct srb_set_funct_addr); i++)
|
|
writeb(0, ti->srb + i);
|
|
|
|
#define FUNCT_ADDRESS_OFST 6
|
|
|
|
writeb(DIR_SET_FUNC_ADDR, ti->srb + COMMAND_OFST);
|
|
for (i = 0; i < 4; i++)
|
|
writeb(address[i], ti->srb + FUNCT_ADDRESS_OFST + i);
|
|
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
#if TR_VERBOSE
|
|
DPRINTK("Setting functional address: ");
|
|
for (i=0;i<4;i++) printk("%02X ", address[i]);
|
|
printk("\n");
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define STATION_ID_OFST 4
|
|
|
|
static int tok_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct tok_info *ti;
|
|
unsigned long flags;
|
|
ti = (struct tok_info *) dev->priv;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
/* lock against other CPUs */
|
|
spin_lock_irqsave(&(ti->lock), flags);
|
|
|
|
/* Save skb; we'll need it when the adapter asks for the data */
|
|
ti->current_skb = skb;
|
|
SET_PAGE(ti->srb_page);
|
|
writeb(XMIT_UI_FRAME, ti->srb + COMMAND_OFST);
|
|
writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
|
|
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
spin_unlock_irqrestore(&(ti->lock), flags);
|
|
dev->trans_start = jiffies;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int tok_close(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
|
|
/* Important for PCMCIA hot unplug, otherwise, we'll pull the card, */
|
|
/* unloading the module from memory, and then if a timer pops, ouch */
|
|
del_timer_sync(&ti->tr_timer);
|
|
outb(0, dev->base_addr + ADAPTRESET);
|
|
ti->sram_phys |= 1;
|
|
ti->open_status = CLOSED;
|
|
|
|
netif_stop_queue(dev);
|
|
DPRINTK("Adapter is closed.\n");
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define RETCODE_OFST 2
|
|
#define OPEN_ERROR_CODE_OFST 6
|
|
#define ASB_ADDRESS_OFST 8
|
|
#define SRB_ADDRESS_OFST 10
|
|
#define ARB_ADDRESS_OFST 12
|
|
#define SSB_ADDRESS_OFST 14
|
|
|
|
static char *printphase[]= {"Lobe media test","Physical insertion",
|
|
"Address verification","Roll call poll","Request Parameters"};
|
|
static char *printerror[]={"Function failure","Signal loss","Reserved",
|
|
"Frequency error","Timeout","Ring failure","Ring beaconing",
|
|
"Duplicate node address",
|
|
"Parameter request-retry count exceeded","Remove received",
|
|
"IMPL force received","Duplicate modifier",
|
|
"No monitor detected","Monitor contention failed for RPL"};
|
|
|
|
static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page)
|
|
{
|
|
if (ti->page_mask) {
|
|
*page = (index >> 8) & ti->page_mask;
|
|
index &= ~(ti->page_mask << 8);
|
|
}
|
|
return ti->sram_virt + index;
|
|
}
|
|
|
|
static void dir_open_adapter (struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
unsigned char ret_code;
|
|
__u16 err;
|
|
|
|
ti->srb = map_address(ti,
|
|
ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)),
|
|
&ti->srb_page);
|
|
ti->ssb = map_address(ti,
|
|
ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)),
|
|
&ti->ssb_page);
|
|
ti->arb = map_address(ti,
|
|
ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)),
|
|
&ti->arb_page);
|
|
ti->asb = map_address(ti,
|
|
ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)),
|
|
&ti->asb_page);
|
|
ti->current_skb = NULL;
|
|
ret_code = readb(ti->init_srb + RETCODE_OFST);
|
|
err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST));
|
|
if (!ret_code) {
|
|
ti->open_status = OPEN; /* TR adapter is now available */
|
|
if (ti->open_mode == AUTOMATIC) {
|
|
DPRINTK("Adapter reopened.\n");
|
|
}
|
|
writeb(~SRB_RESP_INT, ti->mmio+ACA_OFFSET+ACA_RESET+ISRP_ODD);
|
|
open_sap(EXTENDED_SAP, dev);
|
|
return;
|
|
}
|
|
ti->open_failure = YES;
|
|
if (ret_code == 7){
|
|
if (err == 0x24) {
|
|
if (!ti->auto_speedsave) {
|
|
DPRINTK("Open failed: Adapter speed must match "
|
|
"ring speed if Automatic Ring Speed Save is "
|
|
"disabled.\n");
|
|
ti->open_action = FAIL;
|
|
}else
|
|
DPRINTK("Retrying open to adjust to "
|
|
"ring speed, ");
|
|
} else if (err == 0x2d) {
|
|
DPRINTK("Physical Insertion: No Monitor Detected, ");
|
|
printk("retrying after %ds delay...\n",
|
|
TR_RETRY_INTERVAL/HZ);
|
|
} else if (err == 0x11) {
|
|
DPRINTK("Lobe Media Function Failure (0x11), ");
|
|
printk(" retrying after %ds delay...\n",
|
|
TR_RETRY_INTERVAL/HZ);
|
|
} else {
|
|
char **prphase = printphase;
|
|
char **prerror = printerror;
|
|
DPRINTK("TR Adapter misc open failure, error code = ");
|
|
printk("0x%x, Phase: %s, Error: %s\n",
|
|
err, prphase[err/16 -1], prerror[err%16 -1]);
|
|
printk(" retrying after %ds delay...\n",
|
|
TR_RETRY_INTERVAL/HZ);
|
|
}
|
|
} else DPRINTK("open failed: ret_code = %02X..., ", ret_code);
|
|
if (ti->open_action != FAIL) {
|
|
if (ti->open_mode==AUTOMATIC){
|
|
ti->open_action = REOPEN;
|
|
ibmtr_reset_timer(&(ti->tr_timer), dev);
|
|
return;
|
|
}
|
|
wake_up(&ti->wait_for_reset);
|
|
return;
|
|
}
|
|
DPRINTK("FAILURE, CAPUT\n");
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static irqreturn_t tok_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
unsigned char status;
|
|
/* unsigned char status_even ; */
|
|
struct tok_info *ti;
|
|
struct net_device *dev;
|
|
#ifdef ENABLE_PAGING
|
|
unsigned char save_srpr;
|
|
#endif
|
|
|
|
dev = dev_id;
|
|
#if TR_VERBOSE
|
|
DPRINTK("Int from tok_driver, dev : %p irq%d regs=%p\n", dev,irq,regs);
|
|
#endif
|
|
ti = (struct tok_info *) dev->priv;
|
|
if (ti->sram_phys & 1)
|
|
return IRQ_NONE; /* PCMCIA card extraction flag */
|
|
spin_lock(&(ti->lock));
|
|
#ifdef ENABLE_PAGING
|
|
save_srpr = readb(ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
|
|
#endif
|
|
|
|
/* Disable interrupts till processing is finished */
|
|
writeb((~INT_ENABLE), ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
|
|
|
|
/* Reset interrupt for ISA boards */
|
|
if (ti->adapter_int_enable)
|
|
outb(0, ti->adapter_int_enable);
|
|
else /* used for PCMCIA cards */
|
|
outb(0, ti->global_int_enable);
|
|
if (ti->do_tok_int == FIRST_INT){
|
|
initial_tok_int(dev);
|
|
#ifdef ENABLE_PAGING
|
|
writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
|
|
#endif
|
|
spin_unlock(&(ti->lock));
|
|
return IRQ_HANDLED;
|
|
}
|
|
/* Begin interrupt handler HERE inline to avoid the extra
|
|
levels of logic and call depth for the original solution. */
|
|
status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_ODD);
|
|
/*BMSstatus_even = readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) */
|
|
/*BMSdebugprintk("tok_interrupt: ISRP_ODD = 0x%x ISRP_EVEN = 0x%x\n", */
|
|
/*BMS status,status_even); */
|
|
|
|
if (status & ADAP_CHK_INT) {
|
|
int i;
|
|
void __iomem *check_reason;
|
|
__u8 check_reason_page = 0;
|
|
check_reason = map_address(ti,
|
|
ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)),
|
|
&check_reason_page);
|
|
SET_PAGE(check_reason_page);
|
|
|
|
DPRINTK("Adapter check interrupt\n");
|
|
DPRINTK("8 reason bytes follow: ");
|
|
for (i = 0; i < 8; i++, check_reason++)
|
|
printk("%02X ", (int) readb(check_reason));
|
|
printk("\n");
|
|
writeb(~ADAP_CHK_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
|
|
status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRA_EVEN);
|
|
DPRINTK("ISRA_EVEN == 0x02%x\n",status);
|
|
ti->open_status = CLOSED;
|
|
ti->sap_status = CLOSED;
|
|
ti->open_mode = AUTOMATIC;
|
|
netif_carrier_off(dev);
|
|
netif_stop_queue(dev);
|
|
ti->open_action = RESTART;
|
|
outb(0, dev->base_addr + ADAPTRESET);
|
|
ibmtr_reset_timer(&(ti->tr_timer), dev);/*BMS try to reopen*/
|
|
spin_unlock(&(ti->lock));
|
|
return IRQ_HANDLED;
|
|
}
|
|
if (readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN)
|
|
& (TCR_INT | ERR_INT | ACCESS_INT)) {
|
|
DPRINTK("adapter error: ISRP_EVEN : %02x\n",
|
|
(int)readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRP_EVEN));
|
|
writeb(~(TCR_INT | ERR_INT | ACCESS_INT),
|
|
ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
|
|
status= readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRA_EVEN);/*BMS*/
|
|
DPRINTK("ISRA_EVEN == 0x02%x\n",status);/*BMS*/
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
#ifdef ENABLE_PAGING
|
|
writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
|
|
#endif
|
|
spin_unlock(&(ti->lock));
|
|
return IRQ_HANDLED;
|
|
}
|
|
if (status & SRB_RESP_INT) { /* SRB response */
|
|
SET_PAGE(ti->srb_page);
|
|
#if TR_VERBOSE
|
|
DPRINTK("SRB resp: cmd=%02X rsp=%02X\n",
|
|
readb(ti->srb), readb(ti->srb + RETCODE_OFST));
|
|
#endif
|
|
switch (readb(ti->srb)) { /* SRB command check */
|
|
case XMIT_DIR_FRAME:{
|
|
unsigned char xmit_ret_code;
|
|
xmit_ret_code = readb(ti->srb + RETCODE_OFST);
|
|
if (xmit_ret_code == 0xff) break;
|
|
DPRINTK("error on xmit_dir_frame request: %02X\n",
|
|
xmit_ret_code);
|
|
if (ti->current_skb) {
|
|
dev_kfree_skb_irq(ti->current_skb);
|
|
ti->current_skb = NULL;
|
|
}
|
|
/*dev->tbusy = 0;*/
|
|
netif_wake_queue(dev);
|
|
if (ti->readlog_pending)
|
|
ibmtr_readlog(dev);
|
|
break;
|
|
}
|
|
case XMIT_UI_FRAME:{
|
|
unsigned char xmit_ret_code;
|
|
|
|
xmit_ret_code = readb(ti->srb + RETCODE_OFST);
|
|
if (xmit_ret_code == 0xff) break;
|
|
DPRINTK("error on xmit_ui_frame request: %02X\n",
|
|
xmit_ret_code);
|
|
if (ti->current_skb) {
|
|
dev_kfree_skb_irq(ti->current_skb);
|
|
ti->current_skb = NULL;
|
|
}
|
|
netif_wake_queue(dev);
|
|
if (ti->readlog_pending)
|
|
ibmtr_readlog(dev);
|
|
break;
|
|
}
|
|
case DIR_OPEN_ADAPTER:
|
|
dir_open_adapter(dev);
|
|
break;
|
|
case DLC_OPEN_SAP:
|
|
if (readb(ti->srb + RETCODE_OFST)) {
|
|
DPRINTK("open_sap failed: ret_code = %02X, "
|
|
"retrying\n",
|
|
(int) readb(ti->srb + RETCODE_OFST));
|
|
ti->open_action = REOPEN;
|
|
ibmtr_reset_timer(&(ti->tr_timer), dev);
|
|
break;
|
|
}
|
|
ti->exsap_station_id = readw(ti->srb + STATION_ID_OFST);
|
|
ti->sap_status = OPEN;/* TR adapter is now available */
|
|
if (ti->open_mode==MANUAL){
|
|
wake_up(&ti->wait_for_reset);
|
|
break;
|
|
}
|
|
netif_wake_queue(dev);
|
|
netif_carrier_on(dev);
|
|
break;
|
|
case DIR_INTERRUPT:
|
|
case DIR_MOD_OPEN_PARAMS:
|
|
case DIR_SET_GRP_ADDR:
|
|
case DIR_SET_FUNC_ADDR:
|
|
case DLC_CLOSE_SAP:
|
|
if (readb(ti->srb + RETCODE_OFST))
|
|
DPRINTK("error on %02X: %02X\n",
|
|
(int) readb(ti->srb + COMMAND_OFST),
|
|
(int) readb(ti->srb + RETCODE_OFST));
|
|
break;
|
|
case DIR_READ_LOG:
|
|
if (readb(ti->srb + RETCODE_OFST)){
|
|
DPRINTK("error on dir_read_log: %02X\n",
|
|
(int) readb(ti->srb + RETCODE_OFST));
|
|
netif_wake_queue(dev);
|
|
break;
|
|
}
|
|
#if IBMTR_DEBUG_MESSAGES
|
|
|
|
#define LINE_ERRORS_OFST 0
|
|
#define INTERNAL_ERRORS_OFST 1
|
|
#define BURST_ERRORS_OFST 2
|
|
#define AC_ERRORS_OFST 3
|
|
#define ABORT_DELIMITERS_OFST 4
|
|
#define LOST_FRAMES_OFST 6
|
|
#define RECV_CONGEST_COUNT_OFST 7
|
|
#define FRAME_COPIED_ERRORS_OFST 8
|
|
#define FREQUENCY_ERRORS_OFST 9
|
|
#define TOKEN_ERRORS_OFST 10
|
|
|
|
DPRINTK("Line errors %02X, Internal errors %02X, "
|
|
"Burst errors %02X\n" "A/C errors %02X, "
|
|
"Abort delimiters %02X, Lost frames %02X\n"
|
|
"Receive congestion count %02X, "
|
|
"Frame copied errors %02X\nFrequency errors %02X, "
|
|
"Token errors %02X\n",
|
|
(int) readb(ti->srb + LINE_ERRORS_OFST),
|
|
(int) readb(ti->srb + INTERNAL_ERRORS_OFST),
|
|
(int) readb(ti->srb + BURST_ERRORS_OFST),
|
|
(int) readb(ti->srb + AC_ERRORS_OFST),
|
|
(int) readb(ti->srb + ABORT_DELIMITERS_OFST),
|
|
(int) readb(ti->srb + LOST_FRAMES_OFST),
|
|
(int) readb(ti->srb + RECV_CONGEST_COUNT_OFST),
|
|
(int) readb(ti->srb + FRAME_COPIED_ERRORS_OFST),
|
|
(int) readb(ti->srb + FREQUENCY_ERRORS_OFST),
|
|
(int) readb(ti->srb + TOKEN_ERRORS_OFST));
|
|
#endif
|
|
netif_wake_queue(dev);
|
|
break;
|
|
default:
|
|
DPRINTK("Unknown command %02X encountered\n",
|
|
(int) readb(ti->srb));
|
|
} /* end switch SRB command check */
|
|
writeb(~SRB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
|
|
} /* if SRB response */
|
|
if (status & ASB_FREE_INT) { /* ASB response */
|
|
SET_PAGE(ti->asb_page);
|
|
#if TR_VERBOSE
|
|
DPRINTK("ASB resp: cmd=%02X\n", readb(ti->asb));
|
|
#endif
|
|
|
|
switch (readb(ti->asb)) { /* ASB command check */
|
|
case REC_DATA:
|
|
case XMIT_UI_FRAME:
|
|
case XMIT_DIR_FRAME:
|
|
break;
|
|
default:
|
|
DPRINTK("unknown command in asb %02X\n",
|
|
(int) readb(ti->asb));
|
|
} /* switch ASB command check */
|
|
if (readb(ti->asb + 2) != 0xff) /* checks ret_code */
|
|
DPRINTK("ASB error %02X in cmd %02X\n",
|
|
(int) readb(ti->asb + 2), (int) readb(ti->asb));
|
|
writeb(~ASB_FREE_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
|
|
} /* if ASB response */
|
|
|
|
#define STATUS_OFST 6
|
|
#define NETW_STATUS_OFST 6
|
|
|
|
if (status & ARB_CMD_INT) { /* ARB response */
|
|
SET_PAGE(ti->arb_page);
|
|
#if TR_VERBOSE
|
|
DPRINTK("ARB resp: cmd=%02X\n", readb(ti->arb));
|
|
#endif
|
|
|
|
switch (readb(ti->arb)) { /* ARB command check */
|
|
case DLC_STATUS:
|
|
DPRINTK("DLC_STATUS new status: %02X on station %02X\n",
|
|
ntohs(readw(ti->arb + STATUS_OFST)),
|
|
ntohs(readw(ti->arb+ STATION_ID_OFST)));
|
|
break;
|
|
case REC_DATA:
|
|
tr_rx(dev);
|
|
break;
|
|
case RING_STAT_CHANGE:{
|
|
unsigned short ring_status;
|
|
ring_status= ntohs(readw(ti->arb + NETW_STATUS_OFST));
|
|
if (ibmtr_debug_trace & TRC_INIT)
|
|
DPRINTK("Ring Status Change...(0x%x)\n",
|
|
ring_status);
|
|
if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){
|
|
netif_stop_queue(dev);
|
|
netif_carrier_off(dev);
|
|
DPRINTK("Remove received, or Auto-removal error"
|
|
", or Lobe fault\n");
|
|
DPRINTK("We'll try to reopen the closed adapter"
|
|
" after a %d second delay.\n",
|
|
TR_RETRY_INTERVAL/HZ);
|
|
/*I was confused: I saw the TR reopening but */
|
|
/*forgot:with an RJ45 in an RJ45/ICS adapter */
|
|
/*but adapter not in the ring, the TR will */
|
|
/* open, and then soon close and come here. */
|
|
ti->open_mode = AUTOMATIC;
|
|
ti->open_status = CLOSED; /*12/2000 BMS*/
|
|
ti->open_action = REOPEN;
|
|
ibmtr_reset_timer(&(ti->tr_timer), dev);
|
|
} else if (ring_status & LOG_OVERFLOW) {
|
|
if(netif_queue_stopped(dev))
|
|
ti->readlog_pending = 1;
|
|
else
|
|
ibmtr_readlog(dev);
|
|
}
|
|
break;
|
|
}
|
|
case XMIT_DATA_REQ:
|
|
tr_tx(dev);
|
|
break;
|
|
default:
|
|
DPRINTK("Unknown command %02X in arb\n",
|
|
(int) readb(ti->arb));
|
|
break;
|
|
} /* switch ARB command check */
|
|
writeb(~ARB_CMD_INT, ti->mmio+ ACA_OFFSET+ACA_RESET + ISRP_ODD);
|
|
writeb(ARB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
} /* if ARB response */
|
|
if (status & SSB_RESP_INT) { /* SSB response */
|
|
unsigned char retcode;
|
|
SET_PAGE(ti->ssb_page);
|
|
#if TR_VERBOSE
|
|
DPRINTK("SSB resp: cmd=%02X rsp=%02X\n",
|
|
readb(ti->ssb), readb(ti->ssb + 2));
|
|
#endif
|
|
|
|
switch (readb(ti->ssb)) { /* SSB command check */
|
|
case XMIT_DIR_FRAME:
|
|
case XMIT_UI_FRAME:
|
|
retcode = readb(ti->ssb + 2);
|
|
if (retcode && (retcode != 0x22))/* checks ret_code */
|
|
DPRINTK("xmit ret_code: %02X xmit error code: "
|
|
"%02X\n",
|
|
(int)retcode, (int)readb(ti->ssb + 6));
|
|
else
|
|
ti->tr_stats.tx_packets++;
|
|
break;
|
|
case XMIT_XID_CMD:
|
|
DPRINTK("xmit xid ret_code: %02X\n",
|
|
(int) readb(ti->ssb + 2));
|
|
default:
|
|
DPRINTK("Unknown command %02X in ssb\n",
|
|
(int) readb(ti->ssb));
|
|
} /* SSB command check */
|
|
writeb(~SSB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
|
|
writeb(SSB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
} /* if SSB response */
|
|
#ifdef ENABLE_PAGING
|
|
writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
|
|
#endif
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
spin_unlock(&(ti->lock));
|
|
return IRQ_HANDLED;
|
|
} /*tok_interrupt */
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define INIT_STATUS_OFST 1
|
|
#define INIT_STATUS_2_OFST 2
|
|
#define ENCODED_ADDRESS_OFST 8
|
|
|
|
static void initial_tok_int(struct net_device *dev)
|
|
{
|
|
|
|
__u32 encoded_addr, hw_encoded_addr;
|
|
struct tok_info *ti;
|
|
unsigned char init_status; /*BMS 12/2000*/
|
|
|
|
ti = (struct tok_info *) dev->priv;
|
|
|
|
ti->do_tok_int = NOT_FIRST;
|
|
|
|
/* we assign the shared-ram address for ISA devices */
|
|
writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
|
|
#ifndef PCMCIA
|
|
ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
|
|
#endif
|
|
ti->init_srb = map_address(ti,
|
|
ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)),
|
|
&ti->init_srb_page);
|
|
if (ti->page_mask && ti->avail_shared_ram == 127) {
|
|
void __iomem *last_512;
|
|
__u8 last_512_page=0;
|
|
int i;
|
|
last_512 = map_address(ti, 0xfe00, &last_512_page);
|
|
/* initialize high section of ram (if necessary) */
|
|
SET_PAGE(last_512_page);
|
|
for (i = 0; i < 512; i++)
|
|
writeb(0, last_512 + i);
|
|
}
|
|
SET_PAGE(ti->init_srb_page);
|
|
|
|
#if TR_VERBOSE
|
|
{
|
|
int i;
|
|
|
|
DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page);
|
|
DPRINTK("init_srb(%p):", ti->init_srb );
|
|
for (i = 0; i < 20; i++)
|
|
printk("%02X ", (int) readb(ti->init_srb + i));
|
|
printk("\n");
|
|
}
|
|
#endif
|
|
|
|
hw_encoded_addr = readw(ti->init_srb + ENCODED_ADDRESS_OFST);
|
|
encoded_addr = ntohs(hw_encoded_addr);
|
|
init_status= /*BMS 12/2000 check for shallow mode possibility (Turbo)*/
|
|
readb(ti->init_srb+offsetof(struct srb_init_response,init_status));
|
|
/*printk("Initial interrupt: init_status= 0x%02x\n",init_status);*/
|
|
ti->ring_speed = init_status & 0x01 ? 16 : 4;
|
|
DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n",
|
|
ti->ring_speed, (unsigned int)dev->mem_start);
|
|
ti->auto_speedsave=readb(ti->init_srb+INIT_STATUS_2_OFST)&4?TRUE:FALSE;
|
|
|
|
if (ti->open_mode == MANUAL) wake_up(&ti->wait_for_reset);
|
|
else tok_open_adapter((unsigned long)dev);
|
|
|
|
} /*initial_tok_int() */
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define CMD_CORRELATE_OFST 1
|
|
#define DHB_ADDRESS_OFST 6
|
|
|
|
#define FRAME_LENGTH_OFST 6
|
|
#define HEADER_LENGTH_OFST 8
|
|
#define RSAP_VALUE_OFST 9
|
|
|
|
static void tr_tx(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data;
|
|
unsigned int hdr_len;
|
|
__u32 dhb=0,dhb_base;
|
|
void __iomem *dhbuf = NULL;
|
|
unsigned char xmit_command;
|
|
int i,dhb_len=0x4000,src_len,src_offset;
|
|
struct trllc *llc;
|
|
struct srb_xmit xsrb;
|
|
__u8 dhb_page = 0;
|
|
__u8 llc_ssap;
|
|
|
|
SET_PAGE(ti->asb_page);
|
|
|
|
if (readb(ti->asb+RETCODE_OFST) != 0xFF) DPRINTK("ASB not free !!!\n");
|
|
|
|
/* in providing the transmit interrupts, is telling us it is ready for
|
|
data and providing a shared memory address for us to stuff with data.
|
|
Here we compute the effective address where we will place data.
|
|
*/
|
|
SET_PAGE(ti->arb_page);
|
|
dhb=dhb_base=ntohs(readw(ti->arb + DHB_ADDRESS_OFST));
|
|
if (ti->page_mask) {
|
|
dhb_page = (dhb_base >> 8) & ti->page_mask;
|
|
dhb=dhb_base & ~(ti->page_mask << 8);
|
|
}
|
|
dhbuf = ti->sram_virt + dhb;
|
|
|
|
/* Figure out the size of the 802.5 header */
|
|
if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */
|
|
hdr_len = sizeof(struct trh_hdr) - TR_MAXRIFLEN;
|
|
else
|
|
hdr_len = ((ntohs(trhdr->rcf) & TR_RCF_LEN_MASK) >> 8)
|
|
+ sizeof(struct trh_hdr) - TR_MAXRIFLEN;
|
|
|
|
llc = (struct trllc *) (ti->current_skb->data + hdr_len);
|
|
|
|
llc_ssap = llc->ssap;
|
|
SET_PAGE(ti->srb_page);
|
|
memcpy_fromio(&xsrb, ti->srb, sizeof(xsrb));
|
|
SET_PAGE(ti->asb_page);
|
|
xmit_command = xsrb.command;
|
|
|
|
writeb(xmit_command, ti->asb + COMMAND_OFST);
|
|
writew(xsrb.station_id, ti->asb + STATION_ID_OFST);
|
|
writeb(llc_ssap, ti->asb + RSAP_VALUE_OFST);
|
|
writeb(xsrb.cmd_corr, ti->asb + CMD_CORRELATE_OFST);
|
|
writeb(0, ti->asb + RETCODE_OFST);
|
|
if ((xmit_command == XMIT_XID_CMD) || (xmit_command == XMIT_TEST_CMD)) {
|
|
writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST);
|
|
writeb(0x0e, ti->asb + HEADER_LENGTH_OFST);
|
|
SET_PAGE(dhb_page);
|
|
writeb(AC, dhbuf);
|
|
writeb(LLC_FRAME, dhbuf + 1);
|
|
for (i = 0; i < TR_ALEN; i++)
|
|
writeb((int) 0x0FF, dhbuf + i + 2);
|
|
for (i = 0; i < TR_ALEN; i++)
|
|
writeb(0, dhbuf + i + TR_ALEN + 2);
|
|
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
return;
|
|
}
|
|
/*
|
|
* the token ring packet is copied from sk_buff to the adapter
|
|
* buffer identified in the command data received with the interrupt.
|
|
*/
|
|
writeb(hdr_len, ti->asb + HEADER_LENGTH_OFST);
|
|
writew(htons(ti->current_skb->len), ti->asb + FRAME_LENGTH_OFST);
|
|
src_len=ti->current_skb->len;
|
|
src_offset=0;
|
|
dhb=dhb_base;
|
|
while(1) {
|
|
if (ti->page_mask) {
|
|
dhb_page=(dhb >> 8) & ti->page_mask;
|
|
dhb=dhb & ~(ti->page_mask << 8);
|
|
dhb_len=0x4000-dhb; /* remaining size of this page */
|
|
}
|
|
dhbuf = ti->sram_virt + dhb;
|
|
SET_PAGE(dhb_page);
|
|
if (src_len > dhb_len) {
|
|
memcpy_toio(dhbuf,&ti->current_skb->data[src_offset],
|
|
dhb_len);
|
|
src_len -= dhb_len;
|
|
src_offset += dhb_len;
|
|
dhb_base+=dhb_len;
|
|
dhb=dhb_base;
|
|
continue;
|
|
}
|
|
memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len);
|
|
break;
|
|
}
|
|
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
ti->tr_stats.tx_bytes += ti->current_skb->len;
|
|
dev_kfree_skb_irq(ti->current_skb);
|
|
ti->current_skb = NULL;
|
|
netif_wake_queue(dev);
|
|
if (ti->readlog_pending)
|
|
ibmtr_readlog(dev);
|
|
} /*tr_tx */
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
|
#define RECEIVE_BUFFER_OFST 6
|
|
#define LAN_HDR_LENGTH_OFST 8
|
|
#define DLC_HDR_LENGTH_OFST 9
|
|
|
|
#define DSAP_OFST 0
|
|
#define SSAP_OFST 1
|
|
#define LLC_OFST 2
|
|
#define PROTID_OFST 3
|
|
#define ETHERTYPE_OFST 6
|
|
|
|
static void tr_rx(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
__u32 rbuffer;
|
|
void __iomem *rbuf, *rbufdata, *llc;
|
|
__u8 rbuffer_page = 0;
|
|
unsigned char *data;
|
|
unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
|
|
unsigned char dlc_hdr_len;
|
|
struct sk_buff *skb;
|
|
unsigned int skb_size = 0;
|
|
int IPv4_p = 0;
|
|
unsigned int chksum = 0;
|
|
struct iphdr *iph;
|
|
struct arb_rec_req rarb;
|
|
|
|
SET_PAGE(ti->arb_page);
|
|
memcpy_fromio(&rarb, ti->arb, sizeof(rarb));
|
|
rbuffer = ntohs(rarb.rec_buf_addr) ;
|
|
rbuf = map_address(ti, rbuffer, &rbuffer_page);
|
|
|
|
SET_PAGE(ti->asb_page);
|
|
|
|
if (readb(ti->asb + RETCODE_OFST) !=0xFF) DPRINTK("ASB not free !!!\n");
|
|
|
|
writeb(REC_DATA, ti->asb + COMMAND_OFST);
|
|
writew(rarb.station_id, ti->asb + STATION_ID_OFST);
|
|
writew(rarb.rec_buf_addr, ti->asb + RECEIVE_BUFFER_OFST);
|
|
|
|
lan_hdr_len = rarb.lan_hdr_len;
|
|
if (lan_hdr_len > sizeof(struct trh_hdr)) {
|
|
DPRINTK("Linux cannot handle greater than 18 bytes RIF\n");
|
|
return;
|
|
} /*BMS I added this above just to be very safe */
|
|
dlc_hdr_len = readb(ti->arb + DLC_HDR_LENGTH_OFST);
|
|
hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
|
|
|
|
SET_PAGE(rbuffer_page);
|
|
llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len;
|
|
|
|
#if TR_VERBOSE
|
|
DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
|
|
(__u32) offsetof(struct rec_buf, data), (unsigned int) lan_hdr_len);
|
|
DPRINTK("llc: %08X rec_buf_addr: %04X dev->mem_start: %lX\n",
|
|
llc, ntohs(rarb.rec_buf_addr), dev->mem_start);
|
|
DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, "
|
|
"ethertype: %04X\n",
|
|
(int) readb(llc + DSAP_OFST), (int) readb(llc + SSAP_OFST),
|
|
(int) readb(llc + LLC_OFST), (int) readb(llc + PROTID_OFST),
|
|
(int) readb(llc+PROTID_OFST+1),(int)readb(llc+PROTID_OFST + 2),
|
|
(int) ntohs(readw(llc + ETHERTYPE_OFST)));
|
|
#endif
|
|
if (readb(llc + offsetof(struct trllc, llc)) != UI_CMD) {
|
|
SET_PAGE(ti->asb_page);
|
|
writeb(DATA_LOST, ti->asb + RETCODE_OFST);
|
|
ti->tr_stats.rx_dropped++;
|
|
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
return;
|
|
}
|
|
length = ntohs(rarb.frame_len);
|
|
if (readb(llc + DSAP_OFST) == EXTENDED_SAP &&
|
|
readb(llc + SSAP_OFST) == EXTENDED_SAP &&
|
|
length >= hdr_len) IPv4_p = 1;
|
|
#if TR_VERBOSE
|
|
#define SADDR_OFST 8
|
|
#define DADDR_OFST 2
|
|
|
|
if (!IPv4_p) {
|
|
|
|
void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data);
|
|
|
|
DPRINTK("Probably non-IP frame received.\n");
|
|
DPRINTK("ssap: %02X dsap: %02X "
|
|
"saddr: %02X:%02X:%02X:%02X:%02X:%02X "
|
|
"daddr: %02X:%02X:%02X:%02X:%02X:%02X\n",
|
|
readb(llc + SSAP_OFST), readb(llc + DSAP_OFST),
|
|
readb(trhhdr+SADDR_OFST), readb(trhhdr+ SADDR_OFST+1),
|
|
readb(trhhdr+SADDR_OFST+2), readb(trhhdr+SADDR_OFST+3),
|
|
readb(trhhdr+SADDR_OFST+4), readb(trhhdr+SADDR_OFST+5),
|
|
readb(trhhdr+DADDR_OFST), readb(trhhdr+DADDR_OFST + 1),
|
|
readb(trhhdr+DADDR_OFST+2), readb(trhhdr+DADDR_OFST+3),
|
|
readb(trhhdr+DADDR_OFST+4), readb(trhhdr+DADDR_OFST+5));
|
|
}
|
|
#endif
|
|
|
|
/*BMS handle the case she comes in with few hops but leaves with many */
|
|
skb_size=length-lan_hdr_len+sizeof(struct trh_hdr)+sizeof(struct trllc);
|
|
|
|
if (!(skb = dev_alloc_skb(skb_size))) {
|
|
DPRINTK("out of memory. frame dropped.\n");
|
|
ti->tr_stats.rx_dropped++;
|
|
SET_PAGE(ti->asb_page);
|
|
writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
|
|
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
return;
|
|
}
|
|
/*BMS again, if she comes in with few but leaves with many */
|
|
skb_reserve(skb, sizeof(struct trh_hdr) - lan_hdr_len);
|
|
skb_put(skb, length);
|
|
skb->dev = dev;
|
|
data = skb->data;
|
|
rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len)));
|
|
rbufdata = rbuf + offsetof(struct rec_buf, data);
|
|
|
|
if (IPv4_p) {
|
|
/* Copy the headers without checksumming */
|
|
memcpy_fromio(data, rbufdata, hdr_len);
|
|
|
|
/* Watch for padded packets and bogons */
|
|
iph= (struct iphdr *)(data+ lan_hdr_len + sizeof(struct trllc));
|
|
ip_len = ntohs(iph->tot_len) - sizeof(struct iphdr);
|
|
length -= hdr_len;
|
|
if ((ip_len <= length) && (ip_len > 7))
|
|
length = ip_len;
|
|
data += hdr_len;
|
|
rbuffer_len -= hdr_len;
|
|
rbufdata += hdr_len;
|
|
}
|
|
/* Copy the payload... */
|
|
#define BUFFER_POINTER_OFST 2
|
|
#define BUFFER_LENGTH_OFST 6
|
|
for (;;) {
|
|
if (ibmtr_debug_trace&TRC_INITV && length < rbuffer_len)
|
|
DPRINTK("CURIOUS, length=%d < rbuffer_len=%d\n",
|
|
length,rbuffer_len);
|
|
if (IPv4_p)
|
|
chksum=csum_partial_copy_nocheck((void*)rbufdata,
|
|
data,length<rbuffer_len?length:rbuffer_len,chksum);
|
|
else
|
|
memcpy_fromio(data, rbufdata, rbuffer_len);
|
|
rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ;
|
|
if (!rbuffer)
|
|
break;
|
|
rbuffer -= 2;
|
|
length -= rbuffer_len;
|
|
data += rbuffer_len;
|
|
rbuf = map_address(ti, rbuffer, &rbuffer_page);
|
|
SET_PAGE(rbuffer_page);
|
|
rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST));
|
|
rbufdata = rbuf + offsetof(struct rec_buf, data);
|
|
}
|
|
|
|
SET_PAGE(ti->asb_page);
|
|
writeb(0, ti->asb + offsetof(struct asb_rec, ret_code));
|
|
|
|
writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
|
|
ti->tr_stats.rx_bytes += skb->len;
|
|
ti->tr_stats.rx_packets++;
|
|
|
|
skb->protocol = tr_type_trans(skb, dev);
|
|
if (IPv4_p) {
|
|
skb->csum = chksum;
|
|
skb->ip_summed = 1;
|
|
}
|
|
netif_rx(skb);
|
|
dev->last_rx = jiffies;
|
|
} /*tr_rx */
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
|
|
{
|
|
tmr->expires = jiffies + TR_RETRY_INTERVAL;
|
|
tmr->data = (unsigned long) dev;
|
|
tmr->function = tok_rerun;
|
|
init_timer(tmr);
|
|
add_timer(tmr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
void tok_rerun(unsigned long dev_addr){
|
|
|
|
struct net_device *dev = (struct net_device *)dev_addr;
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
|
|
if ( ti->open_action == RESTART){
|
|
ti->do_tok_int = FIRST_INT;
|
|
outb(0, dev->base_addr + ADAPTRESETREL);
|
|
#ifdef ENABLE_PAGING
|
|
if (ti->page_mask)
|
|
writeb(SRPR_ENABLE_PAGING,
|
|
ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
|
|
#endif
|
|
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
} else
|
|
tok_open_adapter(dev_addr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void ibmtr_readlog(struct net_device *dev)
|
|
{
|
|
struct tok_info *ti;
|
|
|
|
ti = (struct tok_info *) dev->priv;
|
|
|
|
ti->readlog_pending = 0;
|
|
SET_PAGE(ti->srb_page);
|
|
writeb(DIR_READ_LOG, ti->srb);
|
|
writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
|
|
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/* tok_get_stats(): Basically a scaffold routine which will return
|
|
the address of the tr_statistics structure associated with
|
|
this device -- the tr.... structure is an ethnet look-alike
|
|
so at least for this iteration may suffice. */
|
|
|
|
static struct net_device_stats *tok_get_stats(struct net_device *dev)
|
|
{
|
|
|
|
struct tok_info *toki;
|
|
toki = (struct tok_info *) dev->priv;
|
|
return (struct net_device_stats *) &toki->tr_stats;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int ibmtr_change_mtu(struct net_device *dev, int mtu)
|
|
{
|
|
struct tok_info *ti = (struct tok_info *) dev->priv;
|
|
|
|
if (ti->ring_speed == 16 && mtu > ti->maxmtu16)
|
|
return -EINVAL;
|
|
if (ti->ring_speed == 4 && mtu > ti->maxmtu4)
|
|
return -EINVAL;
|
|
dev->mtu = mtu;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
#ifdef MODULE
|
|
|
|
/* 3COM 3C619C supports 8 interrupts, 32 I/O ports */
|
|
static struct net_device *dev_ibmtr[IBMTR_MAX_ADAPTERS];
|
|
static int io[IBMTR_MAX_ADAPTERS] = { 0xa20, 0xa24 };
|
|
static int irq[IBMTR_MAX_ADAPTERS];
|
|
static int mem[IBMTR_MAX_ADAPTERS];
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param_array(io, int, NULL, 0);
|
|
module_param_array(irq, int, NULL, 0);
|
|
module_param_array(mem, int, NULL, 0);
|
|
|
|
static int __init ibmtr_init(void)
|
|
{
|
|
int i;
|
|
int count=0;
|
|
|
|
find_turbo_adapters(io);
|
|
|
|
for (i = 0; io[i] && (i < IBMTR_MAX_ADAPTERS); i++) {
|
|
struct net_device *dev;
|
|
irq[i] = 0;
|
|
mem[i] = 0;
|
|
dev = alloc_trdev(sizeof(struct tok_info));
|
|
if (dev == NULL) {
|
|
if (i == 0)
|
|
return -ENOMEM;
|
|
break;
|
|
}
|
|
dev->base_addr = io[i];
|
|
dev->irq = irq[i];
|
|
dev->mem_start = mem[i];
|
|
|
|
if (ibmtr_probe_card(dev)) {
|
|
free_netdev(dev);
|
|
continue;
|
|
}
|
|
dev_ibmtr[i] = dev;
|
|
count++;
|
|
}
|
|
if (count) return 0;
|
|
printk("ibmtr: register_netdev() returned non-zero.\n");
|
|
return -EIO;
|
|
}
|
|
module_init(ibmtr_init);
|
|
|
|
static void __exit ibmtr_cleanup(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < IBMTR_MAX_ADAPTERS; i++){
|
|
if (!dev_ibmtr[i])
|
|
continue;
|
|
unregister_netdev(dev_ibmtr[i]);
|
|
ibmtr_cleanup_card(dev_ibmtr[i]);
|
|
free_netdev(dev_ibmtr[i]);
|
|
}
|
|
}
|
|
module_exit(ibmtr_cleanup);
|
|
#endif
|