11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      FarSync WAN driver for Linux (2.6.x kernel version)
31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Actually sync driver for X.21, V.35 and V.24 on FarSync T-series cards
51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Copyright (C) 2001-2004 FarSite Communications Ltd.
71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      www.farsite.co.uk
81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      This program is free software; you can redistribute it and/or
101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      modify it under the terms of the GNU General Public License
111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      as published by the Free Software Foundation; either version
121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      2 of the License, or (at your option) any later version.
131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Author:      R.J.Dunlop    <bob.dunlop@farsite.co.uk>
151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Maintainer:  Kevin Curtis  <kevin.curtis@farsite.co.uk>
161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
183f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
193f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches
201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h>
211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h>
221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/version.h>
231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h>
24d43c36dc6b357fa1806800f18aa30123c747a6d1Alexey Dobriyan#include <linux/sched.h>
255a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h>
261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h>
271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h>
28a6b7a407865aab9f849dd99a71072b7cd1175116Alexey Dobriyan#include <linux/interrupt.h>
291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/if.h>
301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/hdlc.h>
311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h>
321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h>
331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "farsync.h"
351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Module info
381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("R.J.Dunlop <bob.dunlop@farsite.co.uk>");
401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("FarSync T-Series WAN driver. FarSite Communications Ltd.");
411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL");
421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Driver configuration and global parameters
441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      ==========================================
451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Number of ports (per card) and cards supported
481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_MAX_PORTS           4
501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_MAX_CARDS           32
511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Default parameters for the link
531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_TX_QUEUE_LEN        100	/* At 8Mbps a longer queue length is
550bee8db8f63b099412fdbce5b55b01d9f177951dKrzysztof Hałasa					 * useful */
561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_TXQ_DEPTH           16	/* This one is for the buffering
571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 * of frames on the way down to the card
581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 * so that we can keep the card busy
591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 * and maximise throughput
601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 */
611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_HIGH_WATER_MARK     12	/* Point at which we flow control
621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 * network layer */
631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_LOW_WATER_MARK      8	/* Point at which we remove flow
641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 * control from network layer */
651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_MAX_MTU             8000	/* Huge but possible */
661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_DEF_MTU             1500	/* Common sane value */
671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_TX_TIMEOUT          (2*HZ)
691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef ARPHRD_RAWHDLC
711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ARPHRD_MYTYPE   ARPHRD_RAWHDLC	/* Raw frames */
721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else
731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ARPHRD_MYTYPE   ARPHRD_HDLC	/* Cisco-HDLC (keepalives etc) */
741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
773a070ad1449b1c068a2fac41285ae7548a623485Uwe Kleine-König * Modules parameters and associated variables
781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
797665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic int fst_txq_low = FST_LOW_WATER_MARK;
807665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic int fst_txq_high = FST_HIGH_WATER_MARK;
817665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic int fst_max_reads = 7;
827665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic int fst_excluded_cards = 0;
837665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic int fst_excluded_list[FST_MAX_CARDS];
841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(fst_txq_low, int, 0);
861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(fst_txq_high, int, 0);
871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(fst_max_reads, int, 0);
881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(fst_excluded_cards, int, 0);
891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param_array(fst_excluded_list, int, NULL, 0);
901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Card shared memory layout
921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      =========================
931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#pragma pack(1)
951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      This information is derived in part from the FarSite FarSync Smc.h
971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      file. Unfortunately various name clashes and the non-portability of the
981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      bit field declarations in that file have meant that I have chosen to
991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      recreate the information here.
1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      The SMC (Shared Memory Configuration) has a version number that is
1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      incremented every time there is a significant change. This number can
1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      be used to check that we have not got out of step with the firmware
1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      contained in the .CDE files.
1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMC_VERSION 24
1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_MEMSIZE 0x100000	/* Size of card memory (1Mb) */
1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMC_BASE 0x00002000L	/* Base offset of the shared memory window main
1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * configuration structure */
1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BFM_BASE 0x00010000L	/* Base offset of the shared memory window DMA
1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * buffers */
1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LEN_TX_BUFFER 8192	/* Size of packet buffers */
1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LEN_RX_BUFFER 8192
1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LEN_SMALL_TX_BUFFER 256	/* Size of obsolete buffs used for DOS diags */
1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define LEN_SMALL_RX_BUFFER 256
1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NUM_TX_BUFFER 2		/* Must be power of 2. Fixed by firmware */
1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NUM_RX_BUFFER 8
1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupt retry time in milliseconds */
1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_RETRY_TIME 2
1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      The Am186CH/CC processors support a SmartDMA mode using circular pools
1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      of buffer descriptors. The structure is almost identical to that used
1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      in the LANCE Ethernet controllers. Details available as PDF from the
1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      AMD web site: http://www.amd.com/products/epd/processors/\
1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *                    2.16bitcont/3.am186cxfa/a21914/21914.pdf
1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct txdesc {			/* Transmit descriptor */
1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u16 ladr;	/* Low order address of packet. This is a
1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * linear address in the Am186 memory space
1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u8 hadr;	/* High order address. Low 4 bits only, high 4
1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * bits must be zero
1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u8 bits;	/* Status and config */
1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u16 bcnt;	/* 2s complement of packet size in low 15 bits.
1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Transmit terminal count interrupt enable in
1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * top bit.
1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 unused;		/* Not used in Tx */
1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct rxdesc {			/* Receive descriptor */
1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u16 ladr;	/* Low order address of packet */
1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u8 hadr;	/* High order address */
1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u8 bits;	/* Status and config */
1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u16 bcnt;	/* 2s complement of buffer size in low 15 bits.
1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Receive terminal count interrupt enable in
1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * top bit.
1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	volatile u16 mcnt;	/* Message byte count (15 bits) */
1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Convert a length into the 15 bit 2's complement */
1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* #define cnv_bcnt(len)   (( ~(len) + 1 ) & 0x7FFF ) */
1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Since we need to set the high bit to enable the completion interrupt this
1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can be made a lot simpler
1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define cnv_bcnt(len)   (-(len))
1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Status and config bits for the above */
1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMA_OWN         0x80	/* SmartDMA owns the descriptor */
1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TX_STP          0x02	/* Tx: start of packet */
1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TX_ENP          0x01	/* Tx: end of packet */
1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_ERR          0x40	/* Rx: error (OR of next 4 bits) */
1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_FRAM         0x20	/* Rx: framing error */
1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_OFLO         0x10	/* Rx: overflow error */
1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_CRC          0x08	/* Rx: CRC error */
1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_HBUF         0x04	/* Rx: buffer error */
1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_STP          0x02	/* Rx: start of packet */
1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_ENP          0x01	/* Rx: end of packet */
1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupts from the card are caused by various events which are presented
1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in a circular buffer as several events may be processed on one physical int
1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_CIRBUFF     32
1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct cirbuff {
1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 rdindex;		/* read, then increment and wrap */
1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 wrindex;		/* write, then increment and wrap */
1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 evntbuff[MAX_CIRBUFF];
1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Interrupt event codes.
1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Where appropriate the two low order bits indicate the port number
1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTLA_CHG        0x18	/* Control signal changed */
1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTLB_CHG        0x19
1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTLC_CHG        0x1A
1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CTLD_CHG        0x1B
1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INIT_CPLT       0x20	/* Initialisation complete */
1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INIT_FAIL       0x21	/* Initialisation failed */
1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABTA_SENT       0x24	/* Abort sent */
2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABTB_SENT       0x25
2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABTC_SENT       0x26
2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABTD_SENT       0x27
2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXA_UNDF        0x28	/* Transmission underflow */
2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXB_UNDF        0x29
2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXC_UNDF        0x2A
2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_UNDF        0x2B
2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define F56_INT         0x2C
2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define M32_INT         0x2D
2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TE1_ALMA        0x30
2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Port physical configuration. See farsync.h for field values */
2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct port_cfg {
2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 lineInterface;	/* Physical interface type */
2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 x25op;		/* Unused at present */
2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 internalClock;	/* 1 => internal clock, 0 => external */
2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 transparentMode;	/* 1 => on, 0 => off */
2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 invertClock;		/* 0 => normal, 1 => inverted */
2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 padBytes[6];		/* Padding */
2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 lineSpeed;		/* Speed in bps */
2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* TE1 port physical configuration */
2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct su_config {
2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 dataRate;
2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 clocking;
2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 framing;
2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 structure;
2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 interface;
2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 coding;
2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 lineBuildOut;
2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 equalizer;
2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 transparentMode;
2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 loopMode;
2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 range;
2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 txBufferMode;
2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 rxBufferMode;
2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 startingSlot;
2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 losThreshold;
2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 enableIdleCode;
2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 idleCode;
2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 spare[44];
2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* TE1 Status */
2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct su_status {
2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 receiveBufferDelay;
2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 framingErrorCount;
2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 codeViolationCount;
2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 crcErrorCount;
2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 lineAttenuation;
2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 portStarted;
2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 lossOfSignal;
2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 receiveRemoteAlarm;
2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 alarmIndicationSignal;
2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 spare[40];
2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Finally sling all the above together into the shared memory structure.
2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sorry it's a hodge podge of arrays, structures and unused bits, it's been
2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * evolving under NT for some time so I guess we're stuck with it.
2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The structure starts at offset SMC_BASE.
2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * See farsync.h for some field values.
2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct fst_shared {
2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* DMA descriptor rings */
2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct rxdesc rxDescrRing[FST_MAX_PORTS][NUM_RX_BUFFER];
2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct txdesc txDescrRing[FST_MAX_PORTS][NUM_TX_BUFFER];
2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Obsolete small buffers */
2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 smallRxBuffer[FST_MAX_PORTS][NUM_RX_BUFFER][LEN_SMALL_RX_BUFFER];
2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 smallTxBuffer[FST_MAX_PORTS][NUM_TX_BUFFER][LEN_SMALL_TX_BUFFER];
2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 taskStatus;		/* 0x00 => initialising, 0x01 => running,
2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * 0xFF => halted
2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 interruptHandshake;	/* Set to 0x01 by adapter to signal interrupt,
2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * set to 0xEE by host to acknowledge interrupt
2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 smcVersion;		/* Must match SMC_VERSION */
2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 smcFirmwareVersion;	/* 0xIIVVRRBB where II = product ID, VV = major
2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * version, RR = revision and BB = build
2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 txa_done;		/* Obsolete completion flags */
2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 rxa_done;
2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 txb_done;
2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 rxb_done;
2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 txc_done;
2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 rxc_done;
2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 txd_done;
2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 rxd_done;
2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 mailbox[4];		/* Diagnostics mailbox. Not used */
3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct cirbuff interruptEvent;	/* interrupt causes */
3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 v24IpSts[FST_MAX_PORTS];	/* V.24 control input status */
3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 v24OpSts[FST_MAX_PORTS];	/* V.24 control output status */
3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct port_cfg portConfig[FST_MAX_PORTS];
3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 clockStatus[FST_MAX_PORTS];	/* lsb: 0=> present, 1=> absent */
3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 cableStatus;	/* lsb: 0=> present, 1=> absent */
3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 txDescrIndex[FST_MAX_PORTS];	/* transmit descriptor ring index */
3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 rxDescrIndex[FST_MAX_PORTS];	/* receive descriptor ring index */
3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 portMailbox[FST_MAX_PORTS][2];	/* command, modifier */
3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 cardMailbox[4];	/* Not used */
3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Number of times the card thinks the host has
3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * missed an interrupt by not acknowledging
3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * within 2mS (I guess NT has problems)
3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 interruptRetryCount;
3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Driver private data used as an ID. We'll not
3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * use this as I'd rather keep such things
3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * in main memory rather than on the PCI bus
3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 portHandle[FST_MAX_PORTS];
3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Count of Tx underflows for stats */
3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 transmitBufferUnderflow[FST_MAX_PORTS];
3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Debounced V.24 control input status */
3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 v24DebouncedSts[FST_MAX_PORTS];
3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Adapter debounce timers. Don't touch */
3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 ctsTimer[FST_MAX_PORTS];
3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 ctsTimerRun[FST_MAX_PORTS];
3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 dcdTimer[FST_MAX_PORTS];
3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 dcdTimerRun[FST_MAX_PORTS];
3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 numberOfPorts;	/* Number of ports detected at startup */
3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 _reserved[64];
3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 cardMode;		/* Bit-mask to enable features:
3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Bit 0: 1 enables LED identify mode
3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u16 portScheduleOffset;
3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct su_config suConfig;	/* TE1 Bits */
3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct su_status suStatus;
3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u32 endOfSmcSignature;	/* endOfSmcSignature MUST be the last member of
3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * the structure and marks the end of shared
3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * memory. Adapter code initializes it as
3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * END_SIG.
3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* endOfSmcSignature value */
3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define END_SIG                 0x12345678
3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Mailbox values. (portMailbox) */
3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NOP             0	/* No operation */
3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ACK             1	/* Positive acknowledgement to PC driver */
3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NAK             2	/* Negative acknowledgement to PC driver */
3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STARTPORT       3	/* Start an HDLC port */
3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STOPPORT        4	/* Stop an HDLC port */
3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABORTTX         5	/* Abort the transmitter for a port */
3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SETV24O         6	/* Set V24 outputs */
3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* PLX Chip Register Offsets */
3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CNTRL_9052      0x50	/* Control Register */
3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CNTRL_9054      0x6c	/* Control Register */
3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INTCSR_9052     0x4c	/* Interrupt control/status register */
3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INTCSR_9054     0x68	/* Interrupt control/status register */
3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9054 DMA Registers */
3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note that we will be using DMA Channel 0 for copying rx data
3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and Channel 1 for copying tx data
3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAMODE0        0x80
3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAPADR0        0x84
3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMALADR0        0x88
3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMASIZ0         0x8c
3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMADPR0         0x90
3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAMODE1        0x94
3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAPADR1        0x98
3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMALADR1        0x9c
3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMASIZ1         0xa0
3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMADPR1         0xa4
3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMACSR0         0xa8
3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMACSR1         0xa9
3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAARB          0xac
4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMATHR          0xb0
4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMADAC0         0xb4
4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMADAC1         0xb8
4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAMARBR        0xac
4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_MIN_DMA_LEN 64
4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_RX_DMA_INT  0x01
4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_TX_DMA_INT  0x02
4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_CARD_INT    0x04
4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Larger buffers are positioned in memory at offset BFM_BASE */
4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct buf_window {
4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 txBuffer[FST_MAX_PORTS][NUM_TX_BUFFER][LEN_TX_BUFFER];
4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 rxBuffer[FST_MAX_PORTS][NUM_RX_BUFFER][LEN_RX_BUFFER];
4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Calculate offset of a buffer object within the shared memory window */
4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BUF_OFFSET(X)   (BFM_BASE + offsetof(struct buf_window, X))
4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#pragma pack()
4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Device driver private information
4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      =================================
4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Per port (line or channel) information
4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct fst_port_info {
4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        struct net_device *dev; /* Device struct - must be first */
4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;	/* Card we're associated with */
4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int index;		/* Port index on the card */
4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int hwif;		/* Line hardware (lineInterface copy) */
4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int run;		/* Port is running */
4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int mode;		/* Normal or FarSync raw */
4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rxpos;		/* Next Rx buffer to use */
4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txpos;		/* Next Tx buffer to use */
4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txipos;		/* Next Tx buffer to check for free */
4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int start;		/* Indication of start/stop to network */
4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * A sixteen entry transmit queue
4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txqs;		/* index to get next buffer to tx */
4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txqe;		/* index to queue next packet */
4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct sk_buff *txq[FST_TXQ_DEPTH];	/* The queue */
4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rxqdepth;
4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Per card information
4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct fst_card_info {
4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	char __iomem *mem;	/* Card memory mapped to kernel space */
4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	char __iomem *ctlmem;	/* Control memory for PCI cards */
4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int phys_mem;	/* Physical memory window address */
4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int phys_ctlmem;	/* Physical control memory address */
4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int irq;	/* Interrupt request line number */
4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int nports;	/* Number of serial ports */
4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int type;	/* Type index of card */
4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int state;	/* State of card */
4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spinlock_t card_lock;	/* Lock for SMP access */
4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned short pci_conf;	/* PCI card config in I/O space */
4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Per port info */
4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info ports[FST_MAX_PORTS];
4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct pci_dev *device;	/* Information about the pci device */
4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int card_no;		/* Inst of the card on the system */
4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int family;		/* TxP or TxU */
4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dmarx_in_progress;
4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dmatx_in_progress;
4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long int_count;
4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long int_time_ave;
4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	void *rx_dma_handle_host;
4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dma_addr_t rx_dma_handle_card;
4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	void *tx_dma_handle_host;
4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dma_addr_t tx_dma_handle_card;
4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct sk_buff *dma_skb_rx;
4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *dma_port_rx;
4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *dma_port_tx;
4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dma_len_rx;
4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dma_len_tx;
4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dma_txpos;
4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int dma_rxpos;
4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Convert an HDLC device pointer into a port info pointer and similar */
4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dev_to_port(D)  (dev_to_hdlc(D)->priv)
4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define port_to_dev(P)  ((P)->dev)
4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Shared memory window access macros
4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      We have a nice memory based structure above, which could be directly
4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      mapped on i386 but might not work on other architectures unless we use
4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      the readb,w,l and writeb,w,l macros. Unfortunately these macros take
4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      physical offsets so we have to convert. The only saving grace is that
4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      this should all collapse back to a simple indirection eventually.
4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define WIN_OFFSET(X)   ((long)&(((struct fst_shared *)SMC_BASE)->X))
4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_RDB(C,E)    readb ((C)->mem + WIN_OFFSET(E))
4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_RDW(C,E)    readw ((C)->mem + WIN_OFFSET(E))
4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_RDL(C,E)    readl ((C)->mem + WIN_OFFSET(E))
5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_WRB(C,E,B)  writeb ((B), (C)->mem + WIN_OFFSET(E))
5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_WRW(C,E,W)  writew ((W), (C)->mem + WIN_OFFSET(E))
5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FST_WRL(C,E,L)  writel ((L), (C)->mem + WIN_OFFSET(E))
5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Debug support
5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if FST_DEBUG
5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int fst_debug_mask = { FST_DEBUG };
5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Most common debug activity is to print something if the corresponding bit
5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is set in the debug mask. Note: this uses a non-ANSI extension in GCC to
5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * support variable numbers of macro parameters. The inverted if prevents us
5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * eating someone else's else clause.
5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
5173f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches#define dbg(F, fmt, args...)					\
5183f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perchesdo {								\
5193f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	if (fst_debug_mask & (F))				\
5203f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		printk(KERN_DEBUG pr_fmt(fmt), ##args);		\
5213f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches} while (0)
5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else
5233f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches#define dbg(F, fmt, args...)					\
5243f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perchesdo {								\
5253f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	if (0)							\
5263f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		printk(KERN_DEBUG pr_fmt(fmt), ##args);		\
5273f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches} while (0)
5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      PCI ID lookup table
5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
533a3aa18842a5303fc28fcc4d57dbd16618bd830a0Alexey Dobriyanstatic DEFINE_PCI_DEVICE_TABLE(fst_pci_dev_id) = {
5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_T2P, PCI_ANY_ID,
5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_T2P},
5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_T4P, PCI_ANY_ID,
5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_T4P},
5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_T1U, PCI_ANY_ID,
5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_T1U},
5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_T2U, PCI_ANY_ID,
5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_T2U},
5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_T4U, PCI_ANY_ID,
5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_T4U},
5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_TE1, PCI_ANY_ID,
5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_TE1},
5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{PCI_VENDOR_ID_FARSITE, PCI_DEVICE_ID_FARSITE_TE1C, PCI_ANY_ID,
5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 PCI_ANY_ID, 0, 0, FST_TYPE_TE1},
5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	{0,}			/* End */
5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE(pci, fst_pci_dev_id);
5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Device Driver Work Queues
5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      So that we don't spend too much time processing events in the
5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Interrupt Service routine, we will declare a work queue per Card
5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      and make the ISR schedule a task in the queue for later execution.
5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      In the 2.4 Kernel we used to use the immediate queue for BH's
5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Now that they are gone, tasklets seem to be much better than work
5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      queues.
5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void do_bottom_half_tx(struct fst_card_info *card);
5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void do_bottom_half_rx(struct fst_card_info *card);
5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void fst_process_tx_work_q(unsigned long work_q);
5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void fst_process_int_work_q(unsigned long work_q);
5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5757665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic DECLARE_TASKLET(fst_tx_task, fst_process_tx_work_q, 0);
5767665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic DECLARE_TASKLET(fst_int_task, fst_process_int_work_q, 0);
5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5787665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic struct fst_card_info *fst_card_array[FST_MAX_CARDS];
5797665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic spinlock_t fst_work_q_lock;
5807665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic u64 fst_work_txq;
5817665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic u64 fst_work_intq;
5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_q_work_item(u64 * queue, int card_index)
5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u64 mask;
5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Grab the queue exclusively
5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&fst_work_q_lock, flags);
5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Making an entry in the queue is simply a matter of setting
5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * a bit for the card indicating that there is work to do in the
5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * bottom half for the card.  Note the limitation of 64 cards.
5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * That ought to be enough
5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	mask = 1 << card_index;
6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	*queue |= mask;
6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&fst_work_q_lock, flags);
6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_process_tx_work_q(unsigned long /*void **/work_q)
6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u64 work_txq;
6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Grab the queue exclusively
6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "fst_process_tx_work_q\n");
6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&fst_work_q_lock, flags);
6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	work_txq = fst_work_txq;
6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_work_txq = 0;
6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&fst_work_q_lock, flags);
6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Call the bottom half for each card with work waiting
6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < FST_MAX_CARDS; i++) {
6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (work_txq & 0x01) {
6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (fst_card_array[i] != NULL) {
6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				dbg(DBG_TX, "Calling tx bh for card %d\n", i);
6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				do_bottom_half_tx(fst_card_array[i]);
6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		work_txq = work_txq >> 1;
6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_process_int_work_q(unsigned long /*void **/work_q)
6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u64 work_intq;
6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Grab the queue exclusively
6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_INTR, "fst_process_int_work_q\n");
6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&fst_work_q_lock, flags);
6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	work_intq = fst_work_intq;
6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_work_intq = 0;
6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&fst_work_q_lock, flags);
6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Call the bottom half for each card with work waiting
6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < FST_MAX_CARDS; i++) {
6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (work_intq & 0x01) {
6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (fst_card_array[i] != NULL) {
6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				dbg(DBG_INTR,
6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    "Calling rx & tx bh for card %d\n", i);
6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				do_bottom_half_rx(fst_card_array[i]);
6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				do_bottom_half_tx(fst_card_array[i]);
6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		work_intq = work_intq >> 1;
6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Card control functions
6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      ======================
6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Place the processor in reset state
6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Used to be a simple write to card control space but a glitch in the latest
6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * AMD Am186CH processor means that we now have to do it by asserting and de-
6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * asserting the PLX chip PCI Adapter Software Reset. Bit 30 in CNTRL register
6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * at offset 9052_CNTRL.  Note the updates for the TXU.
6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_cpureset(struct fst_card_info *card)
6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned char interrupt_line_register;
6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long j = jiffies + 1;
6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int regval;
6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (pci_read_config_byte
6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    (card->device, PCI_INTERRUPT_LINE, &interrupt_line_register)) {
6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_ASS,
6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			    "Error in reading interrupt line register\n");
6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Assert PLX software reset and Am186 hardware reset
6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * and then deassert the PLX software reset but 186 still in reset
6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x440f, card->pci_conf + CNTRL_9054 + 2);
6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x040f, card->pci_conf + CNTRL_9054 + 2);
6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * We are delaying here to allow the 9054 to reset itself
6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		j = jiffies + 1;
7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		while (jiffies < j)
7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/* Do nothing */ ;
7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x240f, card->pci_conf + CNTRL_9054 + 2);
7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * We are delaying here to allow the 9054 to reload its eeprom
7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		j = jiffies + 1;
7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		while (jiffies < j)
7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/* Do nothing */ ;
7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x040f, card->pci_conf + CNTRL_9054 + 2);
7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (pci_write_config_byte
7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    (card->device, PCI_INTERRUPT_LINE, interrupt_line_register)) {
7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_ASS,
7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			    "Error in writing interrupt line register\n");
7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		regval = inl(card->pci_conf + CNTRL_9052);
7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(regval | 0x40000000, card->pci_conf + CNTRL_9052);
7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(regval & ~0x40000000, card->pci_conf + CNTRL_9052);
7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Release the processor from reset
7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_cpurelease(struct fst_card_info *card)
7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Force posted writes to complete
7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		(void) readb(card->mem);
7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Release LRESET DO = 1
7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Then release Local Hold, DO = 1
7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x040e, card->pci_conf + CNTRL_9054 + 2);
7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x040f, card->pci_conf + CNTRL_9054 + 2);
7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		(void) readb(card->ctlmem);
7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Clear the cards interrupt flag
7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_clear_intr(struct fst_card_info *card)
7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		(void) readb(card->ctlmem);
7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Poke the appropriate PLX chip register (same as enabling interrupts)
7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x0543, card->pci_conf + INTCSR_9052);
7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Enable card interrupts
7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_enable_intr(struct fst_card_info *card)
7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(0x0f0c0900, card->pci_conf + INTCSR_9054);
7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x0543, card->pci_conf + INTCSR_9052);
7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Disable card interrupts
7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_disable_intr(struct fst_card_info *card)
7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(0x00000000, card->pci_conf + INTCSR_9054);
7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outw(0x0000, card->pci_conf + INTCSR_9052);
7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Process the result of trying to pass a received frame up the stack
7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_process_rx_status(int rx_status, char *name)
7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	switch (rx_status) {
7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case NET_RX_SUCCESS:
7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		{
7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * Nothing to do here
7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case NET_RX_DROP:
7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		{
8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_ASS, "%s: Received packet dropped\n", name);
8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Initilaise DMA for PLX 9054
8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_init_dma(struct fst_card_info *card)
8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * This is only required for the PLX 9054
8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	        pci_set_master(card->device);
8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(0x00020441, card->pci_conf + DMAMODE0);
8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(0x00020441, card->pci_conf + DMAMODE1);
8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		outl(0x0, card->pci_conf + DMATHR);
8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Tx dma complete interrupt
8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_tx_dma_complete(struct fst_card_info *card, struct fst_port_info *port,
8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    int len, int txpos)
8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct net_device *dev = port_to_dev(port);
8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Everything is now set, just tell the card to go
8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "fst_tx_dma_complete\n");
8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRB(card, txDescrRing[port->index][txpos].bits,
8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		DMA_OWN | TX_STP | TX_ENP);
836198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.tx_packets++;
837198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.tx_bytes += len;
8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dev->trans_start = jiffies;
8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Mark it for our own raw sockets interface
8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
844ab611487d8ada506e511d2b8f22fb8e7be9939b9Alexey Dobriyanstatic __be16 farsync_type_trans(struct sk_buff *skb, struct net_device *dev)
8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	skb->dev = dev;
847459a98ed881802dee55897441bc7f77af614368eArnaldo Carvalho de Melo	skb_reset_mac_header(skb);
8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	skb->pkt_type = PACKET_HOST;
8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return htons(ETH_P_CUST);
8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Rx dma complete interrupt
8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_rx_dma_complete(struct fst_card_info *card, struct fst_port_info *port,
8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    int len, struct sk_buff *skb, int rxp)
8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct net_device *dev = port_to_dev(port);
8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rx_status;
8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "fst_rx_dma_complete\n");
8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pi = port->index;
8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	memcpy(skb_put(skb, len), card->rx_dma_handle_host, len);
8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Reset buffer descriptor */
8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Update stats */
870198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.rx_packets++;
871198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.rx_bytes += len;
8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Push upstream */
8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_RX, "Pushing the frame up the stack\n");
8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->mode == FST_RAW)
8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		skb->protocol = farsync_type_trans(skb, dev);
8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		skb->protocol = hdlc_type_trans(skb, dev);
8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rx_status = netif_rx(skb);
8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_process_rx_status(rx_status, port_to_dev(port)->name);
8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (rx_status == NET_RX_DROP)
882198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_dropped++;
8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Receive a frame through the DMA
8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
8895d337d6f64d150b6577972cc23f709ee85f66881David S. Millerfst_rx_dma(struct fst_card_info *card, dma_addr_t skb,
8905d337d6f64d150b6577972cc23f709ee85f66881David S. Miller	   dma_addr_t mem, int len)
8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * This routine will setup the DMA and start it
8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
8965d337d6f64d150b6577972cc23f709ee85f66881David S. Miller	dbg(DBG_RX, "In fst_rx_dma %lx %lx %d\n",
8975d337d6f64d150b6577972cc23f709ee85f66881David S. Miller	    (unsigned long) skb, (unsigned long) mem, len);
8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->dmarx_in_progress) {
8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "In fst_rx_dma while dma in progress\n");
9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9025d337d6f64d150b6577972cc23f709ee85f66881David S. Miller	outl(skb, card->pci_conf + DMAPADR0);	/* Copy to here */
9035d337d6f64d150b6577972cc23f709ee85f66881David S. Miller	outl(mem, card->pci_conf + DMALADR0);	/* from here */
9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl(len, card->pci_conf + DMASIZ0);	/* for this length */
9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl(0x00000000c, card->pci_conf + DMADPR0);	/* In this direction */
9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * We use the dmarx_in_progress flag to flag the channel as busy
9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->dmarx_in_progress = 1;
9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outb(0x03, card->pci_conf + DMACSR0);	/* Start the transfer */
9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Send a frame through the DMA
9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_tx_dma(struct fst_card_info *card, unsigned char *skb,
9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	   unsigned char *mem, int len)
9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * This routine will setup the DMA and start it.
9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "In fst_tx_dma %p %p %d\n", skb, mem, len);
9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->dmatx_in_progress) {
9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "In fst_tx_dma while dma in progress\n");
9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl((unsigned long) skb, card->pci_conf + DMAPADR1);	/* Copy from here */
9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl((unsigned long) mem, card->pci_conf + DMALADR1);	/* to here */
9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl(len, card->pci_conf + DMASIZ1);	/* for this length */
9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outl(0x000000004, card->pci_conf + DMADPR1);	/* In this direction */
9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * We use the dmatx_in_progress to flag the channel as busy
9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->dmatx_in_progress = 1;
9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outb(0x03, card->pci_conf + DMACSR1);	/* Start the transfer */
9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Issue a Mailbox command for a port.
9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Note we issue them on a fire and forget basis, not expecting to see an
9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      error and not waiting for completion.
9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_issue_cmd(struct fst_port_info *port, unsigned short cmd)
9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned short mbval;
9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int safety;
9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&card->card_lock, flags);
9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	mbval = FST_RDW(card, portMailbox[port->index][0]);
9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	safety = 0;
9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Wait for any previous command to complete */
9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	while (mbval > NAK) {
9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		spin_unlock_irqrestore(&card->card_lock, flags);
9623173c8907ffb2c64456142da3df2bd0500bd59e0Nishanth Aravamudan		schedule_timeout_uninterruptible(1);
9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		spin_lock_irqsave(&card->card_lock, flags);
9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (++safety > 2000) {
9663f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("Mailbox safety timeout\n");
9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		mbval = FST_RDW(card, portMailbox[port->index][0]);
9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (safety > 0) {
9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_CMD, "Mailbox clear after %d jiffies\n", safety);
9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (mbval == NAK) {
9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_CMD, "issue_cmd: previous command was NAK'd\n");
9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRW(card, portMailbox[port->index][0], cmd);
9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (cmd == ABORTTX || cmd == STARTPORT) {
9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->txpos = 0;
9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->txipos = 0;
9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->start = 0;
9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&card->card_lock, flags);
9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Port output signals control
9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_op_raise(struct fst_port_info *port, unsigned int outputs)
9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outputs |= FST_RDL(port->card, v24OpSts[port->index]);
9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRL(port->card, v24OpSts[port->index], outputs);
9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->run)
9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_issue_cmd(port, SETV24O);
10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void
10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_op_lower(struct fst_port_info *port, unsigned int outputs)
10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	outputs = ~outputs & FST_RDL(port->card, v24OpSts[port->index]);
10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRL(port->card, v24OpSts[port->index], outputs);
10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->run)
10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_issue_cmd(port, SETV24O);
10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Setup port Rx buffers
10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_rx_config(struct fst_port_info *port)
10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int offset;
10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pi = port->index;
10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&card->card_lock, flags);
10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < NUM_RX_BUFFER; i++) {
10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		offset = BUF_OFFSET(rxBuffer[pi][i][0]);
10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, rxDescrRing[pi][i].ladr, (u16) offset);
10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][i].hadr, (u8) (offset >> 16));
10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, rxDescrRing[pi][i].bcnt, cnv_bcnt(LEN_RX_BUFFER));
10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, rxDescrRing[pi][i].mcnt, LEN_RX_BUFFER);
10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][i].bits, DMA_OWN);
10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->rxpos = 0;
10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&card->card_lock, flags);
10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Setup port Tx buffers
10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_tx_config(struct fst_port_info *port)
10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int offset;
10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pi = port->index;
10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&card->card_lock, flags);
10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < NUM_TX_BUFFER; i++) {
10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		offset = BUF_OFFSET(txBuffer[pi][i][0]);
10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, txDescrRing[pi][i].ladr, (u16) offset);
10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, txDescrRing[pi][i].hadr, (u8) (offset >> 16));
10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, txDescrRing[pi][i].bcnt, 0);
10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, txDescrRing[pi][i].bits, 0);
10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->txpos = 0;
10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->txipos = 0;
10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->start = 0;
10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&card->card_lock, flags);
10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      TE1 Alarm change interrupt event
10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_intr_te1_alarm(struct fst_card_info *card, struct fst_port_info *port)
10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 los;
10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 rra;
10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	u8 ais;
10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	los = FST_RDB(card, suStatus.lossOfSignal);
10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rra = FST_RDB(card, suStatus.receiveRemoteAlarm);
10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ais = FST_RDB(card, suStatus.alarmIndicationSignal);
10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (los) {
10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Lost the link
10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (netif_carrier_ok(port_to_dev(port))) {
10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INTR, "Net carrier off\n");
10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_off(port_to_dev(port));
10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Link available
10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (!netif_carrier_ok(port_to_dev(port))) {
10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INTR, "Net carrier on\n");
10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_on(port_to_dev(port));
10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (los)
11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "Assert LOS Alarm\n");
11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "De-assert LOS Alarm\n");
11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (rra)
11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "Assert RRA Alarm\n");
11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "De-assert RRA Alarm\n");
11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (ais)
11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "Assert AIS Alarm\n");
11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "De-assert AIS Alarm\n");
11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Control signal change interrupt event
11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_intr_ctlchg(struct fst_card_info *card, struct fst_port_info *port)
11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int signals;
11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	signals = FST_RDL(card, v24DebouncedSts[port->index]);
11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (signals & (((port->hwif == X21) || (port->hwif == X21D))
11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		       ? IPSTS_INDICATE : IPSTS_DCD)) {
11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (!netif_carrier_ok(port_to_dev(port))) {
11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INTR, "DCD active\n");
11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_on(port_to_dev(port));
11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (netif_carrier_ok(port_to_dev(port))) {
11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INTR, "DCD lost\n");
11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_off(port_to_dev(port));
11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Log Rx Errors
11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_log_rx_error(struct fst_card_info *card, struct fst_port_info *port,
11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 unsigned char dmabits, int rxp, unsigned short len)
11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct net_device *dev = port_to_dev(port);
11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1146198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	/*
11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Increment the appropriate error counter
11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
1149198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.rx_errors++;
11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits & RX_OFLO) {
1151198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_fifo_errors++;
11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Rx fifo error on card %d port %d buffer %d\n",
11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, port->index, rxp);
11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits & RX_CRC) {
1156198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_crc_errors++;
11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Rx crc error on card %d port %d\n",
11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, port->index);
11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits & RX_FRAM) {
1161198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_frame_errors++;
11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Rx frame error on card %d port %d\n",
11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, port->index);
11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits == (RX_STP | RX_ENP)) {
1166198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_length_errors++;
11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Rx length error (%d) on card %d port %d\n",
11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    len, card->card_no, port->index);
11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Rx Error Recovery
11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_recover_rx_error(struct fst_card_info *card, struct fst_port_info *port,
11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		     unsigned char dmabits, int rxp, unsigned short len)
11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pi = port->index;
11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Discard buffer descriptors until we see the start of the
11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * next frame.  Note that for long frames this could be in
11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * a subsequent interrupt.
11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	i = 0;
11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	while ((dmabits & (DMA_OWN | RX_STP)) == 0) {
11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		rxp = (rxp+1) % NUM_RX_BUFFER;
11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (++i > NUM_RX_BUFFER) {
11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_ASS, "intr_rx: Discarding more bufs"
11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			    " than we have\n");
11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dmabits = FST_RDB(card, rxDescrRing[pi][rxp].bits);
11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "DMA Bits of next buffer was %x\n", dmabits);
11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_ASS, "There were %d subsequent buffers in error\n", i);
12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Discard the terminal buffer */
12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (!(dmabits & DMA_OWN)) {
12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		rxp = (rxp+1) % NUM_RX_BUFFER;
12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->rxpos = rxp;
12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return;
12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Rx complete interrupt
12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_intr_rx(struct fst_card_info *card, struct fst_port_info *port)
12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned char dmabits;
12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rxp;
12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rx_status;
12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned short len;
12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct sk_buff *skb;
12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct net_device *dev = port_to_dev(port);
12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Check we have a buffer to process */
12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pi = port->index;
12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rxp = port->rxpos;
12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dmabits = FST_RDB(card, rxDescrRing[pi][rxp].bits);
12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits & DMA_OWN) {
12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_RX | DBG_INTR, "intr_rx: No buffer port %d pos %d\n",
12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    pi, rxp);
12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->dmarx_in_progress) {
12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Get buffer length */
12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	len = FST_RDW(card, rxDescrRing[pi][rxp].mcnt);
12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Discard the CRC */
12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	len -= 2;
12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (len == 0) {
12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * This seems to happen on the TE1 interface sometimes
12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * so throw the frame away and log the event.
12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
12463f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Frame received with 0 length. Card %d Port %d\n",
12473f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		       card->card_no, port->index);
12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Return descriptor to card */
12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		rxp = (rxp+1) % NUM_RX_BUFFER;
12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->rxpos = rxp;
12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Check buffer length and for other errors. We insist on one packet
12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * in one buffer. This simplifies things greatly and since we've
12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * allocated 8K it shouldn't be a real world limitation
12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_RX, "intr_rx: %d,%d: flags %x len %d\n", pi, rxp, dmabits, len);
12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (dmabits != (RX_STP | RX_ENP) || len > LEN_RX_BUFFER - 2) {
12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_log_rx_error(card, port, dmabits, rxp, len);
12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_recover_rx_error(card, port, dmabits, rxp, len);
12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Allocate SKB */
12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((skb = dev_alloc_skb(len)) == NULL) {
12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_RX, "intr_rx: can't allocate buffer\n");
12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1271198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_dropped++;
12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Return descriptor to card */
12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		rxp = (rxp+1) % NUM_RX_BUFFER;
12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->rxpos = rxp;
12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * We know the length we need to receive, len.
12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * It's not worth using the DMA for reads of less than
12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * FST_MIN_DMA_LEN
12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((len < FST_MIN_DMA_LEN) || (card->family == FST_FAMILY_TXP)) {
12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		memcpy_fromio(skb_put(skb, len),
12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			      card->mem + BUF_OFFSET(rxBuffer[pi][rxp][0]),
12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			      len);
12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Reset buffer descriptor */
12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, rxDescrRing[pi][rxp].bits, DMA_OWN);
12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Update stats */
1296198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_packets++;
1297198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.rx_bytes += len;
12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Push upstream */
13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_RX, "Pushing frame up the stack\n");
13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (port->mode == FST_RAW)
13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			skb->protocol = farsync_type_trans(skb, dev);
13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		else
13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			skb->protocol = hdlc_type_trans(skb, dev);
13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		rx_status = netif_rx(skb);
13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_process_rx_status(rx_status, port_to_dev(port)->name);
1307198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		if (rx_status == NET_RX_DROP)
1308198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa			dev->stats.rx_dropped++;
13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else {
13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->dma_skb_rx = skb;
13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->dma_port_rx = port;
13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->dma_len_rx = len;
13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->dma_rxpos = rxp;
13145d337d6f64d150b6577972cc23f709ee85f66881David S. Miller		fst_rx_dma(card, card->rx_dma_handle_card,
13155d337d6f64d150b6577972cc23f709ee85f66881David S. Miller			   BUF_OFFSET(rxBuffer[pi][rxp][0]), len);
13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (rxp != port->rxpos) {
13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "About to increment rxpos by more than 1\n");
13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "rxp = %d rxpos = %d\n", rxp, port->rxpos);
13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rxp = (rxp+1) % NUM_RX_BUFFER;
13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->rxpos = rxp;
13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      The bottom halfs to the ISR
13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *
13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdo_bottom_half_tx(struct fst_card_info *card)
13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txq_length;
13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct sk_buff *skb;
13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct net_device *dev;
13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 *  Find a free buffer for the transmit
13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 *  Step through each port on this card
13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "do_bottom_half_tx\n");
13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (pi = 0, port = card->ports; pi < card->nports; pi++, port++) {
13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (!port->run)
13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			continue;
13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
1350198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev = port_to_dev(port);
1351198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		while (!(FST_RDB(card, txDescrRing[pi][port->txpos].bits) &
13528e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches			 DMA_OWN) &&
13538e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches		       !(card->dmatx_in_progress)) {
13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * There doesn't seem to be a txdone event per-se
13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * We seem to have to deduce it, by checking the DMA_OWN
13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * bit on the next buffer we think we can use
13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			spin_lock_irqsave(&card->card_lock, flags);
13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if ((txq_length = port->txqe - port->txqs) < 0) {
13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * This is the case where one has wrapped and the
13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * maths gives us a negative number
13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				txq_length = txq_length + FST_TXQ_DEPTH;
13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			spin_unlock_irqrestore(&card->card_lock, flags);
13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (txq_length > 0) {
13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * There is something to send
13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				spin_lock_irqsave(&card->card_lock, flags);
13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				skb = port->txq[port->txqs];
13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				port->txqs++;
13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				if (port->txqs == FST_TXQ_DEPTH) {
13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					port->txqs = 0;
13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				}
13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				spin_unlock_irqrestore(&card->card_lock, flags);
13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * copy the data and set the required indicators on the
13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * card.
13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				FST_WRW(card, txDescrRing[pi][port->txpos].bcnt,
13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					cnv_bcnt(skb->len));
13858e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches				if ((skb->len < FST_MIN_DMA_LEN) ||
13868e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches				    (card->family == FST_FAMILY_TXP)) {
13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					/* Enqueue the packet with normal io */
13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					memcpy_toio(card->mem +
13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						    BUF_OFFSET(txBuffer[pi]
13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds							       [port->
13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds								txpos][0]),
13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						    skb->data, skb->len);
13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					FST_WRB(card,
13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						txDescrRing[pi][port->txpos].
13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						bits,
13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						DMA_OWN | TX_STP | TX_ENP);
1397198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa					dev->stats.tx_packets++;
1398198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa					dev->stats.tx_bytes += skb->len;
13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					dev->trans_start = jiffies;
14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				} else {
14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					/* Or do it through dma */
14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					memcpy(card->tx_dma_handle_host,
14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					       skb->data, skb->len);
14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					card->dma_port_tx = port;
14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					card->dma_len_tx = skb->len;
14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					card->dma_txpos = port->txpos;
14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					fst_tx_dma(card,
14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						   (char *) card->
14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						   tx_dma_handle_card,
14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						   (char *)
14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						   BUF_OFFSET(txBuffer[pi]
14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds							      [port->txpos][0]),
14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						   skb->len);
14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				}
14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				if (++port->txpos >= NUM_TX_BUFFER)
14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					port->txpos = 0;
14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * If we have flow control on, can we now release it?
14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				if (port->start) {
14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					if (txq_length < fst_txq_low) {
14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						netif_wake_queue(port_to_dev
14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds								 (port));
14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds						port->start = 0;
14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					}
14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				}
14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				dev_kfree_skb(skb);
14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			} else {
14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Nothing to send so break out of the while loop
14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				break;
14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdo_bottom_half_rx(struct fst_card_info *card)
14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int pi;
14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rx_count = 0;
14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Check for rx completions on all ports on this card */
14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_RX, "do_bottom_half_rx\n");
14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (pi = 0, port = card->ports; pi < card->nports; pi++, port++) {
14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (!port->run)
14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			continue;
14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		while (!(FST_RDB(card, rxDescrRing[pi][port->rxpos].bits)
14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 & DMA_OWN) && !(card->dmarx_in_progress)) {
14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (rx_count > fst_max_reads) {
14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				/*
14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Don't spend forever in receive processing
14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 * Schedule another event
14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				 */
14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				fst_q_work_item(&fst_work_intq, card->card_no);
14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				tasklet_schedule(&fst_int_task);
14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				break;	/* Leave the loop */
14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_intr_rx(card, port);
14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			rx_count++;
14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      The interrupt service routine
14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Dev_id is our fst_card_info pointer
14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
14727665a08928f241247afe8c76865cdbe4ef5489bfAdrian Bunkstatic irqreturn_t
147328fc1f5a0c375cb6375fa48e9a8b393f2a189be6Jeff Garzikfst_intr(int dummy, void *dev_id)
14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
147528fc1f5a0c375cb6375fa48e9a8b393f2a189be6Jeff Garzik	struct fst_card_info *card = dev_id;
14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int rdidx;		/* Event buffer indices */
14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int wridx;
14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int event;		/* Actual event for processing */
14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int dma_intcsr = 0;
14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int do_card_interrupt;
14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned int int_retry_count;
14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Check to see if the interrupt was for this card
14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * return if not
14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Note that the call to clear the interrupt is important
14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
148928fc1f5a0c375cb6375fa48e9a8b393f2a189be6Jeff Garzik	dbg(DBG_INTR, "intr: %d %p\n", card->irq, card);
14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->state != FST_RUNNING) {
14913f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Interrupt received for card %d in a non running state (%d)\n",
14923f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		       card->card_no, card->state);
14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * It is possible to really be running, i.e. we have re-loaded
14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * a running card
14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Clear and reprime the interrupt source
14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_clear_intr(card);
15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return IRQ_HANDLED;
15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Clear and reprime the interrupt source */
15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_clear_intr(card);
15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Is the interrupt for this card (handshake == 1)
15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	do_card_interrupt = 0;
15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (FST_RDB(card, interruptHandshake) == 1) {
15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		do_card_interrupt += FST_CARD_INT;
15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Set the software acknowledge */
15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, interruptHandshake, 0xEE);
15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Is it a DMA Interrupt
15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dma_intcsr = inl(card->pci_conf + INTCSR_9054);
15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (dma_intcsr & 0x00200000) {
15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * DMA Channel 0 (Rx transfer complete)
15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_RX, "DMA Rx xfer complete\n");
15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			outb(0x8, card->pci_conf + DMACSR0);
15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_rx_dma_complete(card, card->dma_port_rx,
15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					    card->dma_len_rx, card->dma_skb_rx,
15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					    card->dma_rxpos);
15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			card->dmarx_in_progress = 0;
15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			do_card_interrupt += FST_RX_DMA_INT;
15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (dma_intcsr & 0x00400000) {
15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * DMA Channel 1 (Tx transfer complete)
15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_TX, "DMA Tx xfer complete\n");
15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			outb(0x8, card->pci_conf + DMACSR1);
15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_tx_dma_complete(card, card->dma_port_tx,
15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					    card->dma_len_tx, card->dma_txpos);
15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			card->dmatx_in_progress = 0;
15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			do_card_interrupt += FST_TX_DMA_INT;
15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Have we been missing Interrupts
15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int_retry_count = FST_RDL(card, interruptRetryCount);
15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (int_retry_count) {
15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Card %d int_retry_count is  %d\n",
15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, int_retry_count);
15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRL(card, interruptRetryCount, 0);
15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (!do_card_interrupt) {
15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return IRQ_HANDLED;
15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Scehdule the bottom half of the ISR */
15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_q_work_item(&fst_work_intq, card->card_no);
15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	tasklet_schedule(&fst_int_task);
15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Drain the event queue */
15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rdidx = FST_RDB(card, interruptEvent.rdindex) & 0x1f;
15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	wridx = FST_RDB(card, interruptEvent.wrindex) & 0x1f;
15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	while (rdidx != wridx) {
15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		event = FST_RDB(card, interruptEvent.evntbuff[rdidx]);
15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port = &card->ports[event & 0x03];
15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_INTR, "Processing Interrupt event: %x\n", event);
15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		switch (event) {
15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case TE1_ALMA:
15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INTR, "TE1 Alarm intr\n");
15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (port->run)
15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				fst_intr_te1_alarm(card, port);
15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case CTLA_CHG:
15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case CTLB_CHG:
15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case CTLC_CHG:
15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case CTLD_CHG:
15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (port->run)
15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				fst_intr_ctlchg(card, port);
15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case ABTA_SENT:
15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case ABTB_SENT:
15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case ABTC_SENT:
15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case ABTD_SENT:
15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_TX, "Abort complete port %d\n", port->index);
15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case TXA_UNDF:
15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case TXB_UNDF:
15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case TXC_UNDF:
15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case TXD_UNDF:
15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/* Difficult to see how we'd get this given that we
15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * always load up the entire packet for DMA.
16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_TX, "Tx underflow port %d\n", port->index);
1602198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa			port_to_dev(port)->stats.tx_errors++;
1603198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa			port_to_dev(port)->stats.tx_fifo_errors++;
16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_ASS, "Tx underflow on card %d port %d\n",
16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			    card->card_no, port->index);
16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case INIT_CPLT:
16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INIT, "Card init OK intr\n");
16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case INIT_FAIL:
16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_INIT, "Card init FAILED intr\n");
16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			card->state = FST_IFAILED;
16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		default:
16183f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("intr: unknown card event %d. ignored\n", event);
16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			break;
16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Bump and wrap the index */
16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (++rdidx >= MAX_CIRBUFF)
16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			rdidx = 0;
16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRB(card, interruptEvent.rdindex, rdidx);
16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        return IRQ_HANDLED;
16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*      Check that the shared memory configuration is one that we can handle
16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      and that some basic parameters are correct
16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscheck_started_ok(struct fst_card_info *card)
16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Check structure version and end marker */
16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (FST_RDW(card, smcVersion) != SMC_VERSION) {
16403f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Bad shared memory version %d expected %d\n",
16413f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		       FST_RDW(card, smcVersion), SMC_VERSION);
16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_BADVERSION;
16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (FST_RDL(card, endOfSmcSignature) != END_SIG) {
16463f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Missing shared memory signature\n");
16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_BADVERSION;
16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Firmware status flag, 0x00 = initialising, 0x01 = OK, 0xFF = fail */
16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((i = FST_RDB(card, taskStatus)) == 0x01) {
16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_RUNNING;
16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else if (i == 0xFF) {
16543f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Firmware initialisation failed. Card halted\n");
16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_HALTED;
16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	} else if (i != 0x00) {
16583f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Unknown firmware status 0x%x\n", i);
16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_HALTED;
16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return;
16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Finally check the number of ports reported by firmware against the
16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * number we assumed at card detection. Should never happen with
16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * existing firmware etc so we just report it for the moment.
16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (FST_RDL(card, numberOfPorts) != card->nports) {
1668e8c122f450d0b83d7a15535ba49e55ad21a9e63fJoe Perches		pr_warn("Port count mismatch on card %d.  Firmware thinks %d we say %d\n",
1669e8c122f450d0b83d7a15535ba49e55ad21a9e63fJoe Perches			card->card_no,
1670e8c122f450d0b83d7a15535ba49e55ad21a9e63fJoe Perches			FST_RDL(card, numberOfPorts), card->nports);
16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsset_conf_from_info(struct fst_card_info *card, struct fst_port_info *port,
16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		   struct fstioc_info *info)
16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int err;
16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned char my_framing;
16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Set things according to the user set valid flags
16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Several of the old options have been invalidated/replaced by the
16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * generic hdlc package.
16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	err = 0;
16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_PROTO) {
16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->proto == FST_RAW)
16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->mode = FST_RAW;
16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		else
16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->mode = FST_GEN_HDLC;
16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_CABLE)
16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		err = -EINVAL;
16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_SPEED)
16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		err = -EINVAL;
16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_PHASE)
17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, portConfig[port->index].invertClock,
17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->invertClock);
17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_MODE)
17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, cardMode, info->cardMode);
17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_TE1) {
17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRL(card, suConfig.dataRate, info->lineSpeed);
17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.clocking, info->clockSource);
17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		my_framing = FRAMING_E1;
17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->framing == E1)
17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			my_framing = FRAMING_E1;
17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->framing == T1)
17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			my_framing = FRAMING_T1;
17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->framing == J1)
17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			my_framing = FRAMING_J1;
17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.framing, my_framing);
17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.structure, info->structure);
17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.interface, info->interface);
17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.coding, info->coding);
17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.lineBuildOut, info->lineBuildOut);
17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.equalizer, info->equalizer);
17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.transparentMode, info->transparentMode);
17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.loopMode, info->loopMode);
17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.range, info->range);
17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.txBufferMode, info->txBufferMode);
17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.rxBufferMode, info->rxBufferMode);
17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.startingSlot, info->startingSlot);
17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.losThreshold, info->losThreshold);
17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->idleCode)
17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			FST_WRB(card, suConfig.enableIdleCode, 1);
17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		else
17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			FST_WRB(card, suConfig.enableIdleCode, 0);
17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, suConfig.idleCode, info->idleCode);
17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if FST_DEBUG
17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (info->valid & FSTVAL_TE1) {
17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Setting TE1 data\n");
17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Line Speed = %d\n", info->lineSpeed);
17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Start slot = %d\n", info->startingSlot);
17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Clock source = %d\n", info->clockSource);
17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Framing = %d\n", my_framing);
17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Structure = %d\n", info->structure);
17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("interface = %d\n", info->interface);
17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Coding = %d\n", info->coding);
17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Line build out = %d\n", info->lineBuildOut);
17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Equaliser = %d\n", info->equalizer);
17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Transparent mode = %d\n",
17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			       info->transparentMode);
17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Loop mode = %d\n", info->loopMode);
17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Range = %d\n", info->range);
17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Tx Buffer mode = %d\n", info->txBufferMode);
17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Rx Buffer mode = %d\n", info->rxBufferMode);
17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("LOS Threshold = %d\n", info->losThreshold);
17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			printk("Idle Code = %d\n", info->idleCode);
17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if FST_DEBUG
17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (info->valid & FSTVAL_DEBUG) {
17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_debug_mask = info->debug;
17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return err;
17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgather_conf_info(struct fst_card_info *card, struct fst_port_info *port,
17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 struct fstioc_info *info)
17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	memset(info, 0, sizeof (struct fstioc_info));
17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	i = port->index;
17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->kernelVersion = LINUX_VERSION_CODE;
17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->nports = card->nports;
17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->type = card->type;
17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->state = card->state;
17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->proto = FST_GEN_HDLC;
17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->index = i;
17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if FST_DEBUG
17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->debug = fst_debug_mask;
17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Only mark information as valid if card is running.
17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Copy the data anyway in case it is useful for diagnostics
17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->valid = ((card->state == FST_RUNNING) ? FSTVAL_ALL : FSTVAL_CARD)
17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if FST_DEBUG
17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    | FSTVAL_DEBUG
17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif
17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    ;
17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->lineInterface = FST_RDW(card, portConfig[i].lineInterface);
17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->internalClock = FST_RDB(card, portConfig[i].internalClock);
17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->lineSpeed = FST_RDL(card, portConfig[i].lineSpeed);
17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->invertClock = FST_RDB(card, portConfig[i].invertClock);
17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->v24IpSts = FST_RDL(card, v24IpSts[i]);
17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->v24OpSts = FST_RDL(card, v24OpSts[i]);
17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->clockStatus = FST_RDW(card, clockStatus[i]);
17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->cableStatus = FST_RDW(card, cableStatus);
18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->cardMode = FST_RDW(card, cardMode);
18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	info->smcFirmwareVersion = FST_RDL(card, smcFirmwareVersion);
18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * The T2U can report cable presence for both A or B
18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * in bits 0 and 1 of cableStatus.  See which port we are and
18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * do the mapping.
18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (port->index == 0) {
18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * Port A
18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->cableStatus = info->cableStatus & 1;
18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		} else {
18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/*
18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 * Port B
18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			 */
18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->cableStatus = info->cableStatus >> 1;
18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->cableStatus = info->cableStatus & 1;
18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Some additional bits if we are TE1
18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->type == FST_TYPE_TE1) {
18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->lineSpeed = FST_RDL(card, suConfig.dataRate);
18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->clockSource = FST_RDB(card, suConfig.clocking);
18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->framing = FST_RDB(card, suConfig.framing);
18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->structure = FST_RDB(card, suConfig.structure);
18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->interface = FST_RDB(card, suConfig.interface);
18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->coding = FST_RDB(card, suConfig.coding);
18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->lineBuildOut = FST_RDB(card, suConfig.lineBuildOut);
18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->equalizer = FST_RDB(card, suConfig.equalizer);
18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->loopMode = FST_RDB(card, suConfig.loopMode);
18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->range = FST_RDB(card, suConfig.range);
18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->txBufferMode = FST_RDB(card, suConfig.txBufferMode);
18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->rxBufferMode = FST_RDB(card, suConfig.rxBufferMode);
18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->startingSlot = FST_RDB(card, suConfig.startingSlot);
18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->losThreshold = FST_RDB(card, suConfig.losThreshold);
18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (FST_RDB(card, suConfig.enableIdleCode))
18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->idleCode = FST_RDB(card, suConfig.idleCode);
18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		else
18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			info->idleCode = 0;
18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->receiveBufferDelay =
18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    FST_RDL(card, suStatus.receiveBufferDelay);
18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->framingErrorCount =
18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    FST_RDL(card, suStatus.framingErrorCount);
18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->codeViolationCount =
18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    FST_RDL(card, suStatus.codeViolationCount);
18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->crcErrorCount = FST_RDL(card, suStatus.crcErrorCount);
18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->lineAttenuation = FST_RDL(card, suStatus.lineAttenuation);
18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->lossOfSignal = FST_RDB(card, suStatus.lossOfSignal);
18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->receiveRemoteAlarm =
18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    FST_RDB(card, suStatus.receiveRemoteAlarm);
18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		info->alarmIndicationSignal =
18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    FST_RDB(card, suStatus.alarmIndicationSignal);
18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_set_iface(struct fst_card_info *card, struct fst_port_info *port,
18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	      struct ifreq *ifr)
18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sync_serial_settings sync;
18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (ifr->ifr_settings.size != sizeof (sync)) {
18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENOMEM;
18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (copy_from_user
18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    (&sync, ifr->ifr_settings.ifs_ifsu.sync, sizeof (sync))) {
18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EFAULT;
18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (sync.loopback)
18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EINVAL;
18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	i = port->index;
18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	switch (ifr->ifr_settings.type) {
18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_V35:
18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, V35);
18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = V35;
18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_V24:
18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, V24);
18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = V24;
18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_X21:
18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, X21);
18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = X21;
18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_X21D:
18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, X21D);
18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = X21D;
19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_T1:
19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, T1);
19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = T1;
19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_E1:
19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRW(card, portConfig[i].lineInterface, E1);
19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->hwif = E1;
19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case IF_IFACE_SYNC_SERIAL:
19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	default:
19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EINVAL;
19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	switch (sync.clock_type) {
19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case CLOCK_EXT:
19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, portConfig[i].internalClock, EXTCLK);
19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case CLOCK_INT:
19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		FST_WRB(card, portConfig[i].internalClock, INTCLK);
19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	default:
19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EINVAL;
19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	FST_WRL(card, portConfig[i].lineSpeed, sync.clock_rate);
19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;
19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_get_iface(struct fst_card_info *card, struct fst_port_info *port,
19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	      struct ifreq *ifr)
19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sync_serial_settings sync;
19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* First check what line type is set, we'll default to reporting X.21
19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * if nothing is set as IF_IFACE_SYNC_SERIAL implies it can't be
19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * changed
19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	switch (port->hwif) {
19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case E1:
19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_E1;
19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case T1:
19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_T1;
19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case V35:
19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_V35;
19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case V24:
19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_V24;
19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case X21D:
19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_X21D;
19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case X21:
19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	default:
19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		ifr->ifr_settings.type = IF_IFACE_X21;
19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		break;
19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (ifr->ifr_settings.size == 0) {
19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return 0;	/* only type requested */
19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (ifr->ifr_settings.size < sizeof (sync)) {
19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENOMEM;
19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	i = port->index;
19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sync.clock_rate = FST_RDL(card, portConfig[i].lineSpeed);
19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Lucky card and linux use same encoding here */
19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sync.clock_type = FST_RDB(card, portConfig[i].internalClock) ==
19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    INTCLK ? CLOCK_INT : CLOCK_EXT;
19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	sync.loopback = 0;
19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (copy_to_user(ifr->ifr_settings.ifs_ifsu.sync, &sync, sizeof (sync))) {
19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EFAULT;
19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	ifr->ifr_settings.size = sizeof (sync);
19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;
19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fstioc_write wrthdr;
19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fstioc_info info;
19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
19975ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro	void *buf;
19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_IOCTL, "ioctl: %x, %p\n", cmd, ifr->ifr_data);
20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port = dev_to_port(dev);
20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (!capable(CAP_NET_ADMIN))
20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EPERM;
20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	switch (cmd) {
20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case FSTCPURESET:
20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_cpureset(card);
20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_RESET;
20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return 0;
20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case FSTCPURELEASE:
20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_cpurelease(card);
20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->state = FST_STARTING;
20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return 0;
20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case FSTWRITE:		/* Code write (download) */
20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* First copy in the header with the length and offset of data
20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * to write
20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (ifr->ifr_data == NULL) {
20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EINVAL;
20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (copy_from_user(&wrthdr, ifr->ifr_data,
20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				   sizeof (struct fstioc_write))) {
20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EFAULT;
20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Sanity check the parameters. We don't support partial writes
20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * when going over the top
20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
20348e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches		if (wrthdr.size > FST_MEMSIZE || wrthdr.offset > FST_MEMSIZE ||
20358e95a2026f3b43f7c3d676adaccd2de9532e8dccJoe Perches		    wrthdr.size + wrthdr.offset > FST_MEMSIZE) {
20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -ENXIO;
20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20395ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro		/* Now copy the data to the card. */
20405ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro
20417d88950426da812a6ab93ee1bba821f7f0ec1766Julia Lawall		buf = memdup_user(ifr->ifr_data + sizeof(struct fstioc_write),
20427d88950426da812a6ab93ee1bba821f7f0ec1766Julia Lawall				  wrthdr.size);
20437d88950426da812a6ab93ee1bba821f7f0ec1766Julia Lawall		if (IS_ERR(buf))
20447d88950426da812a6ab93ee1bba821f7f0ec1766Julia Lawall			return PTR_ERR(buf);
20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20465ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro		memcpy_toio(card->mem + wrthdr.offset, buf, wrthdr.size);
20475ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro		kfree(buf);
20485ffa6d7f613ca0198dae235986443cd921fa2e75Al Viro
20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Writes to the memory of a card in the reset state constitute
20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * a download
20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (card->state == FST_RESET) {
20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			card->state = FST_DOWNLOAD;
20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return 0;
20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case FSTGETCONF:
20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* If card has just been started check the shared memory config
20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * version and marker
20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (card->state == FST_STARTING) {
20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			check_started_ok(card);
20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			/* If everything checked out enable card interrupts */
20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (card->state == FST_RUNNING) {
20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				spin_lock_irqsave(&card->card_lock, flags);
20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				fst_enable_intr(card);
20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				FST_WRB(card, interruptHandshake, 0xEE);
20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				spin_unlock_irqrestore(&card->card_lock, flags);
20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (ifr->ifr_data == NULL) {
20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EINVAL;
20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		gather_conf_info(card, port, &info);
20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (copy_to_user(ifr->ifr_data, &info, sizeof (info))) {
20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EFAULT;
20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return 0;
20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case FSTSETCONF:
20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Most of the settings have been moved to the generic ioctls
20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * this just covers debug and board ident now
20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (card->state != FST_RUNNING) {
20933f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("Attempt to configure card %d in non-running state (%d)\n",
20943f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			       card->card_no, card->state);
20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EIO;
20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (copy_from_user(&info, ifr->ifr_data, sizeof (info))) {
20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -EFAULT;
20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return set_conf_from_info(card, port, &info);
21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	case SIOCWANDEV:
21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		switch (ifr->ifr_settings.type) {
21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_GET_IFACE:
21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return fst_get_iface(card, port, ifr);
21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_SYNC_SERIAL:
21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_V35:
21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_V24:
21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_X21:
21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_X21D:
21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_T1:
21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_IFACE_E1:
21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return fst_set_iface(card, port, ifr);
21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_PROTO_RAW:
21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->mode = FST_RAW;
21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return 0;
21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		case IF_GET_PROTO:
21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if (port->mode == FST_RAW) {
21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				ifr->ifr_settings.type = IF_PROTO_RAW;
21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				return 0;
21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return hdlc_ioctl(dev, ifr, cmd);
21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		default:
21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->mode = FST_GEN_HDLC;
21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_IOCTL, "Passing this type to hdlc %x\n",
21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			    ifr->ifr_settings.type);
21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return hdlc_ioctl(dev, ifr, cmd);
21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	default:
21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Not one of ours. Pass through to HDLC package */
21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return hdlc_ioctl(dev, ifr, cmd);
21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_openport(struct fst_port_info *port)
21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int signals;
21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txq_length;
21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Only init things if card is actually running. This allows open to
21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * succeed for downloads etc.
21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->card->state == FST_RUNNING) {
21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (port->run) {
21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_OPEN, "open: found port already running\n");
21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_issue_cmd(port, STOPPORT);
21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->run = 0;
21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_rx_config(port);
21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_tx_config(port);
21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_op_raise(port, OPSTS_RTS | OPSTS_DTR);
21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_issue_cmd(port, STARTPORT);
21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->run = 1;
21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		signals = FST_RDL(port->card, v24DebouncedSts[port->index]);
21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (signals & (((port->hwif == X21) || (port->hwif == X21D))
21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			       ? IPSTS_INDICATE : IPSTS_DCD))
21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_on(port_to_dev(port));
21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		else
21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			netif_carrier_off(port_to_dev(port));
21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		txq_length = port->txqe - port->txqs;
21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->txqe = 0;
21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->txqs = 0;
21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_closeport(struct fst_port_info *port)
21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->card->state == FST_RUNNING) {
21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (port->run) {
21841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			port->run = 0;
21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_op_lower(port, OPSTS_RTS | OPSTS_DTR);
21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_issue_cmd(port, STOPPORT);
21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		} else {
21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			dbg(DBG_OPEN, "close: port not running\n");
21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_open(struct net_device *dev)
21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int err;
21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port = dev_to_port(dev);
22011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (!try_module_get(THIS_MODULE))
22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds          return -EBUSY;
22031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->mode != FST_RAW) {
22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		err = hdlc_open(dev);
2206d0fd64c1de437bdf91c32d4f84a53fa4b2150348Pavel Shved		if (err) {
2207d0fd64c1de437bdf91c32d4f84a53fa4b2150348Pavel Shved			module_put(THIS_MODULE);
22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return err;
2209d0fd64c1de437bdf91c32d4f84a53fa4b2150348Pavel Shved		}
22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
22111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_openport(port);
22131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	netif_wake_queue(dev);
22141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;
22151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
22161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_close(struct net_device *dev)
22191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
22201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
22211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned char tx_dma_done;
22231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned char rx_dma_done;
22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port = dev_to_port(dev);
22261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
22271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	tx_dma_done = inb(card->pci_conf + DMACSR1);
22291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	rx_dma_done = inb(card->pci_conf + DMACSR0);
22301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_OPEN,
22311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    "Port Close: tx_dma_in_progress = %d (%x) rx_dma_in_progress = %d (%x)\n",
22321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    card->dmatx_in_progress, tx_dma_done, card->dmarx_in_progress,
22331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    rx_dma_done);
22341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	netif_stop_queue(dev);
22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_closeport(dev_to_port(dev));
22371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->mode != FST_RAW) {
22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		hdlc_close(dev);
22391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	module_put(THIS_MODULE);
22411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;
22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
22431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int
22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_attach(struct net_device *dev, unsigned short encoding, unsigned short parity)
22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
22481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Setting currently fixed in FarSync card so we check and forget
22491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (encoding != ENCODING_NRZ || parity != PARITY_CRC16_PR1_CCITT)
22511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -EINVAL;
22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;
22531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
22541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void
22561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_tx_timeout(struct net_device *dev)
22571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port = dev_to_port(dev);
22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
2263198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.tx_errors++;
2264198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa	dev->stats.tx_aborted_errors++;
22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_ASS, "Tx timeout card %d port %d\n",
22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    card->card_no, port->index);
22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_issue_cmd(port, ABORTTX);
22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dev->trans_start = jiffies;
22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	netif_wake_queue(dev);
22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->start = 0;
22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
22731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2274d71a674922e7519edb477ecb585e7d29d69c7aa7Stephen Hemmingerstatic netdev_tx_t
22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_start_xmit(struct sk_buff *skb, struct net_device *dev)
22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
22781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_port_info *port;
22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	unsigned long flags;
22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int txq_length;
22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port = dev_to_port(dev);
22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = port->card;
22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_TX, "fst_start_xmit: length = %d\n", skb->len);
22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Drop packet with error if we don't have carrier */
22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (!netif_carrier_ok(dev)) {
22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dev_kfree_skb(skb);
2289198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.tx_errors++;
2290198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.tx_carrier_errors++;
22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS,
22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    "Tried to transmit but no carrier on card %d port %d\n",
22931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, port->index);
2294ec634fe328182a1a098585bfc7b69e5042bdb08dPatrick McHardy		return NETDEV_TX_OK;
22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Drop it if it's too big! MTU failure ? */
22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (skb->len > LEN_TX_BUFFER) {
22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Packet too large %d vs %d\n", skb->len,
23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    LEN_TX_BUFFER);
23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dev_kfree_skb(skb);
2302198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.tx_errors++;
2303ec634fe328182a1a098585bfc7b69e5042bdb08dPatrick McHardy		return NETDEV_TX_OK;
23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * We are always going to queue the packet
23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * so that the bottom half is the only place we tx from
23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * Check there is room in the port txq
23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
23111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&card->card_lock, flags);
23121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((txq_length = port->txqe - port->txqs) < 0) {
23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * This is the case where the next free has wrapped but the
23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * last used hasn't
23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
23171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		txq_length = txq_length + FST_TXQ_DEPTH;
23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&card->card_lock, flags);
23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (txq_length > fst_txq_high) {
23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * We have got enough buffers in the pipeline.  Ask the network
23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * layer to stop sending frames down
23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		netif_stop_queue(dev);
23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->start = 1;	/* I'm using this to signal stop sent up */
23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (txq_length == FST_TXQ_DEPTH - 1) {
23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * This shouldn't have happened but such is life
23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dev_kfree_skb(skb);
2334198191c4a7ce4daba379608fb38b9bc5a4eedc61Krzysztof Halasa		dev->stats.tx_errors++;
23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		dbg(DBG_ASS, "Tx queue overflow card %d port %d\n",
23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    card->card_no, port->index);
2337ec634fe328182a1a098585bfc7b69e5042bdb08dPatrick McHardy		return NETDEV_TX_OK;
23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * queue the buffer
23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_irqsave(&card->card_lock, flags);
23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->txq[port->txqe] = skb;
23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	port->txqe++;
23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (port->txqe == FST_TXQ_DEPTH)
23471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		port->txqe = 0;
23481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_unlock_irqrestore(&card->card_lock, flags);
23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Scehdule the bottom half which now does transmit processing */
23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_q_work_item(&fst_work_txq, card->card_no);
23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	tasklet_schedule(&fst_tx_task);
23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2354ec634fe328182a1a098585bfc7b69e5042bdb08dPatrick McHardy	return NETDEV_TX_OK;
23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
23561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
23581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Card setup having checked hardware resources.
23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Should be pretty bizarre if we get an error here (kernel memory
23601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      exhaustion is one possibility). If we do see a problem we report it
23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      via a printk and leave the corresponding interface and all that follow
23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      disabled.
23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
23641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *type_strings[] __devinitdata = {
23651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"no hardware",		/* Should never be seen */
23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync T2P",
23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync T4P",
23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync T1U",
23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync T2U",
23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync T4U",
23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	"FarSync TE1"
23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __devinit
23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_init_card(struct fst_card_info *card)
23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int err;
23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* We're working on a number of ports based on the card ID. If the
23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * firmware detects something different later (should never happen)
23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * we'll have to revise it in some way then.
23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
23841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < card->nports; i++) {
23851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                err = register_hdlc_device(card->ports[i].dev);
23861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                if (err < 0) {
23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			int j;
23883f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("Cannot register HDLC device for port %d (errno %d)\n",
23893f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			       i, -err);
23901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			for (j = i; j < card->nports; j++) {
23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				free_netdev(card->ports[j].dev);
23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				card->ports[j].dev = NULL;
23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        card->nports = i;
23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        break;
23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                }
23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
23993f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	pr_info("%s-%s: %s IRQ%d, %d ports\n",
24003f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		port_to_dev(&card->ports[0])->name,
24013f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		port_to_dev(&card->ports[card->nports - 1])->name,
24023f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		type_strings[card->type], card->irq, card->nports);
24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
24041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2405991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasastatic const struct net_device_ops fst_ops = {
2406991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_open       = fst_open,
2407991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_stop       = fst_close,
2408991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_change_mtu = hdlc_change_mtu,
2409991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_start_xmit = hdlc_start_xmit,
2410991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_do_ioctl   = fst_ioctl,
2411991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa	.ndo_tx_timeout = fst_tx_timeout,
2412991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa};
2413991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa
24141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
24151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Initialise card when detected.
24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Returns 0 to indicate success, or errno otherwise.
24171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
24181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __devinit
24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent)
24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
24211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	static int no_of_cards_added = 0;
24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
24231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int err = 0;
24241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
24251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24263f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	printk_once(KERN_INFO
24273f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		    pr_fmt("FarSync WAN driver " FST_USER_VERSION
24283f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			   " (c) 2001-2004 FarSite Communications Ltd.\n"));
24293f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches#if FST_DEBUG
24303f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	dbg(DBG_ASS, "The value of debug mask is %x\n", fst_debug_mask);
24313f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches#endif
24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/*
24331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * We are going to be clever and allow certain cards not to be
24341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 * configured.  An exclude list can be provided in /etc/modules.conf
24351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	 */
24361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (fst_excluded_cards != 0) {
24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * There are cards to exclude
24391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 *
24401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		for (i = 0; i < fst_excluded_cards; i++) {
24421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			if ((pdev->devfn) >> 3 == fst_excluded_list[i]) {
24433f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches				pr_info("FarSync PCI device %d not assigned\n",
24443f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches					(pdev->devfn) >> 3);
24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				return -EBUSY;
24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			}
24471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
24481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Allocate driver private data */
2451dd00cc486ab1c17049a535413d1751ef3482141cYoann Padioleau	card = kzalloc(sizeof (struct fst_card_info), GFP_KERNEL);
24521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card == NULL) {
24533f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("FarSync card found but insufficient memory for driver storage\n");
24541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENOMEM;
24551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Try to enable the device */
24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((err = pci_enable_device(pdev)) != 0) {
24593f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Failed to enable card. Err %d\n", -err);
24601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(card);
24611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return err;
24621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((err = pci_request_regions(pdev, "FarSync")) !=0) {
24653f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Failed to allocate regions. Err %d\n", -err);
24661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_disable_device(pdev);
24671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(card);
24681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	        return err;
24691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Get virtual addresses of memory regions */
24721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->pci_conf = pci_resource_start(pdev, 1);
24731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->phys_mem = pci_resource_start(pdev, 2);
24741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->phys_ctlmem = pci_resource_start(pdev, 3);
24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((card->mem = ioremap(card->phys_mem, FST_MEMSIZE)) == NULL) {
24763f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Physical memory remap failed\n");
24771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_release_regions(pdev);
24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_disable_device(pdev);
24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(card);
24801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENODEV;
24811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((card->ctlmem = ioremap(card->phys_ctlmem, 0x10)) == NULL) {
24833f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Control memory remap failed\n");
24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_release_regions(pdev);
24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_disable_device(pdev);
248648159f009f5f92ef5962e7c278ac615d74242fa5Julia Lawall		iounmap(card->mem);
24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(card);
24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENODEV;
24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_PCI, "kernel mem %p, ctlmem %p\n", card->mem, card->ctlmem);
24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Register the interrupt handler */
24931fb9df5d3069064c037c81c0ab8bf783ffa5e373Thomas Gleixner	if (request_irq(pdev->irq, fst_intr, IRQF_SHARED, FST_DEV_NAME, card)) {
24943f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches		pr_err("Unable to register interrupt %d\n", card->irq);
24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_release_regions(pdev);
24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_disable_device(pdev);
24971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		iounmap(card->ctlmem);
24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		iounmap(card->mem);
24991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		kfree(card);
25001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		return -ENODEV;
25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
25021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Record info we need */
25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->irq = pdev->irq;
25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->type = ent->driver_data;
25061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->family = ((ent->driver_data == FST_TYPE_T2P) ||
25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			(ent->driver_data == FST_TYPE_T4P))
25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    ? FST_FAMILY_TXP : FST_FAMILY_TXU;
25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if ((ent->driver_data == FST_TYPE_T1U) ||
25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    (ent->driver_data == FST_TYPE_TE1))
25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->nports = 1;
25121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	else
25131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->nports = ((ent->driver_data == FST_TYPE_T2P) ||
25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				(ent->driver_data == FST_TYPE_T2U)) ? 2 : 4;
25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->state = FST_UNINIT;
25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        spin_lock_init ( &card->card_lock );
25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        for ( i = 0 ; i < card->nports ; i++ ) {
25201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		struct net_device *dev = alloc_hdlcdev(&card->ports[i]);
25211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		hdlc_device *hdlc;
25221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (!dev) {
25231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			while (i--)
25241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				free_netdev(card->ports[i].dev);
25253f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("FarSync: out of memory\n");
25261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        free_irq(card->irq, card);
25271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        pci_release_regions(pdev);
25281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        pci_disable_device(pdev);
25291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        iounmap(card->ctlmem);
25301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        iounmap(card->mem);
25311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        kfree(card);
25321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                        return -ENODEV;
25331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
25341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->ports[i].dev    = dev;
25351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                card->ports[i].card   = card;
25361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                card->ports[i].index  = i;
25371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                card->ports[i].run    = 0;
25381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		hdlc = dev_to_hdlc(dev);
25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                /* Fill in the net device info */
25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/* Since this is a PCI setup this is purely
25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * informational. Give them the buffer addresses
25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * and basic card I/O.
25451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                dev->mem_start   = card->phys_mem
25471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                                 + BUF_OFFSET ( txBuffer[i][0][0]);
25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                dev->mem_end     = card->phys_mem
25491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                                 + BUF_OFFSET ( txBuffer[i][NUM_TX_BUFFER][0]);
25501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                dev->base_addr   = card->pci_conf;
25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                dev->irq         = card->irq;
25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
2553991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa		dev->netdev_ops = &fst_ops;
2554991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa		dev->tx_queue_len = FST_TX_QUEUE_LEN;
2555991990a12de42281f81b4e3a6471586d2d0caf6aKrzysztof Hałasa		dev->watchdog_timeo = FST_TX_TIMEOUT;
25561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                hdlc->attach = fst_attach;
25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds                hdlc->xmit   = fst_start_xmit;
25581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
25591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->device = pdev;
25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_PCI, "type %d nports %d irq %d\n", card->type,
25631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    card->nports, card->irq);
25641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	dbg(DBG_PCI, "conf %04x mem %08x ctlmem %08x\n",
25651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	    card->pci_conf, card->phys_mem, card->phys_ctlmem);
25661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Reset the card's processor */
25681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_cpureset(card);
25691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->state = FST_RESET;
25701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Initialise DMA (if required) */
25721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_init_dma(card);
25731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Record driver data for later use */
25751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pci_set_drvdata(pdev, card);
25761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
25771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	/* Remainder of card setup */
25781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_card_array[no_of_cards_added] = card;
25791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card->card_no = no_of_cards_added++;	/* Record instance and bump it */
25801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_init_card(card);
25811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
25821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
25831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Allocate a dma buffer for transmit and receives
25841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
25851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->rx_dma_handle_host =
25861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    pci_alloc_consistent(card->device, FST_MAX_MTU,
25871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 &card->rx_dma_handle_card);
25881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (card->rx_dma_handle_host == NULL) {
25893f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("Could not allocate rx dma buffer\n");
25901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_disable_intr(card);
25911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			pci_release_regions(pdev);
25921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			pci_disable_device(pdev);
25931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			iounmap(card->ctlmem);
25941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			iounmap(card->mem);
25951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			kfree(card);
25961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -ENOMEM;
25971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
25981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		card->tx_dma_handle_host =
25991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		    pci_alloc_consistent(card->device, FST_MAX_MTU,
26001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds					 &card->tx_dma_handle_card);
26011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		if (card->tx_dma_handle_host == NULL) {
26023f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches			pr_err("Could not allocate tx dma buffer\n");
26031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			fst_disable_intr(card);
26041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			pci_release_regions(pdev);
26051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			pci_disable_device(pdev);
26061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			iounmap(card->ctlmem);
26071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			iounmap(card->mem);
26081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			kfree(card);
26091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds			return -ENOMEM;
26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		}
26111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	return 0;		/* Success */
26131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
26141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*
26161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *      Cleanup and close down a card
26171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */
26181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __devexit
26191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_remove_one(struct pci_dev *pdev)
26201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
26211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	struct fst_card_info *card;
26221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	card = pci_get_drvdata(pdev);
26251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < card->nports; i++) {
26271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		struct net_device *dev = port_to_dev(&card->ports[i]);
26281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		unregister_hdlc_device(dev);
26291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
26301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_disable_intr(card);
26321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	free_irq(card->irq, card);
26331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	iounmap(card->ctlmem);
26351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	iounmap(card->mem);
26361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pci_release_regions(pdev);
26371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	if (card->family == FST_FAMILY_TXU) {
26381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		/*
26391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 * Free dma buffers
26401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		 */
26411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_free_consistent(card->device, FST_MAX_MTU,
26421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    card->rx_dma_handle_host,
26431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    card->rx_dma_handle_card);
26441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		pci_free_consistent(card->device, FST_MAX_MTU,
26451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    card->tx_dma_handle_host,
26461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds				    card->tx_dma_handle_card);
26471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	}
26481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	fst_card_array[card->card_no] = NULL;
26491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
26501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_driver fst_driver = {
26521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .name		= FST_NAME,
26531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .id_table	= fst_pci_dev_id,
26541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .probe		= fst_add_one,
26551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .remove	= __devexit_p(fst_remove_one),
26561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .suspend	= NULL,
26571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds        .resume	= NULL,
26581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds};
26591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init
26611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_init(void)
26621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
26631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	int i;
26641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	for (i = 0; i < FST_MAX_CARDS; i++)
26661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds		fst_card_array[i] = NULL;
26671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	spin_lock_init(&fst_work_q_lock);
2668299176206b266f204be859adf9e66efd06628ab2Jeff Garzik	return pci_register_driver(&fst_driver);
26691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
26701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit
26721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfst_cleanup_module(void)
26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{
26743f326d40994f922e0a3e468dd7fd9999eaf71574Joe Perches	pr_info("FarSync WAN driver unloading\n");
26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds	pci_unregister_driver(&fst_driver);
26761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}
26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds
26781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(fst_init);
26791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(fst_cleanup_module);
2680