- 根目录:
- drivers
- staging
- cxt1e1
- pmcc4_drv.c
/*
* $Id: pmcc4_drv.c,v 3.1 2007/08/15 23:32:17 rickd PMCC4_3_1B $
*/
/*-----------------------------------------------------------------------------
* pmcc4_drv.c -
*
* Copyright (C) 2007 One Stop Systems, Inc.
* Copyright (C) 2002-2006 SBE, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* For further information, contact via email: support@onestopsystems.com
* One Stop Systems, Inc. Escondido, California U.S.A.
*-----------------------------------------------------------------------------
* RCS info:
* RCS revision: $Revision: 3.1 $
* Last changed on $Date: 2007/08/15 23:32:17 $
* Changed by $Author: rickd $
*-----------------------------------------------------------------------------
* $Log: pmcc4_drv.c,v $
* Revision 3.1 2007/08/15 23:32:17 rickd
* Use 'if 0' instead of GNU comment delimeter to avoid line wrap induced compiler errors.
*
* Revision 3.0 2007/08/15 22:19:55 rickd
* Correct sizeof() castings and pi->regram to support 64bit compatibility.
*
* Revision 2.10 2006/04/21 00:56:40 rickd
* workqueue files now prefixed with <sbecom> prefix.
*
* Revision 2.9 2005/11/01 19:22:49 rickd
* Add sanity checks against max_port for ioctl functions.
*
* Revision 2.8 2005/10/27 18:59:25 rickd
* Code cleanup. Default channel config to HDLC_FCS16.
*
* Revision 2.7 2005/10/18 18:16:30 rickd
* Further NCOMM code repairs - (1) interrupt matrix usage inconsistent
* for indexing into nciInterrupt[][], code missing double parameters.
* (2) check input of ncomm interrupt registration cardID for correct
* boundary values.
*
* Revision 2.6 2005/10/17 23:55:28 rickd
* Initial port of NCOMM support patches from original work found
* in pmc_c4t1e1 as updated by NCOMM. Ref: CONFIG_SBE_PMCC4_NCOMM.
* Corrected NCOMMs wanpmcC4T1E1_getBaseAddress() to correctly handle
* multiple boards.
*
* Revision 2.5 2005/10/13 23:01:28 rickd
* Correct panic for illegal address reference w/in get_brdinfo on
* first_if/last_if name acquistion under Linux 2.6
*
* Revision 2.4 2005/10/13 21:20:19 rickd
* Correction of c4_cleanup() wherein next should be acquired before
* ci_t structure is free'd.
*
* Revision 2.3 2005/10/13 19:20:10 rickd
* Correct driver removal cleanup code for multiple boards.
*
* Revision 2.2 2005/10/11 18:34:04 rickd
* New routine added to determine number of ports (comets) on board.
*
* Revision 2.1 2005/10/05 00:48:13 rickd
* Add some RX activation trace code.
*
* Revision 2.0 2005/09/28 00:10:06 rickd
* Implement 2.6 workqueue for TX/RX restart. Correction to
* hardware register boundary checks allows expanded access of MUSYCC.
* Implement new musycc reg&bits namings.
*
*-----------------------------------------------------------------------------
*/
char OSSIid_pmcc4_drvc[] =
"@(#)pmcc4_drv.c - $Revision: 3.1 $ (c) Copyright 2002-2007 One Stop Systems, Inc.";
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#if defined (__FreeBSD__) || defined (__NetBSD__)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#else
#include <linux/types.h>
#include "pmcc4_sysdep.h"
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/sched.h> /* include for timer */
#include <linux/timer.h> /* include for timer */
#include <linux/hdlc.h>
#include <asm/io.h>
#endif
#include "sbecom_inline_linux.h"
#include "libsbew.h"
#include "pmcc4_private.h"
#include "pmcc4.h"
#include "pmcc4_ioctls.h"
#include "musycc.h"
#include "comet.h"
#include "sbe_bid.h"
#ifdef SBE_INCLUDE_SYMBOLS
#define STATIC
#else
#define STATIC static
#endif
#define KERN_WARN KERN_WARNING
/* forward references */
status_t c4_wk_chan_init (mpi_t *, mch_t *);
void c4_wq_port_cleanup (mpi_t *);
status_t c4_wq_port_init (mpi_t *);
int c4_loop_port (ci_t *, int, u_int8_t);
status_t c4_set_port (ci_t *, int);
status_t musycc_chan_down (ci_t *, int);
u_int32_t musycc_chan_proto (int);
status_t musycc_dump_ring (ci_t *, unsigned int);
status_t __init musycc_init (ci_t *);
void musycc_init_mdt (mpi_t *);
void musycc_serv_req (mpi_t *, u_int32_t);
void musycc_update_timeslots (mpi_t *);
extern void musycc_update_tx_thp (mch_t *);
extern int cxt1e1_log_level;
extern int cxt1e1_max_mru;
extern int cxt1e1_max_mtu;
extern int max_rxdesc_used, max_rxdesc_default;
extern int max_txdesc_used, max_txdesc_default;
#if defined (__powerpc__)
extern void *memset (void *s, int c, size_t n);
#endif
int drvr_state = SBE_DRVR_INIT;
ci_t *c4_list = 0;
ci_t *CI; /* dummy pointer to board ZEROE's data -
* DEBUG USAGE */
void
sbecom_set_loglevel (int d)
{
/*
* The code within the following -if- clause is a backdoor debug facility
* which can be used to display the state of a board's channel.
*/
if (d > LOG_DEBUG)
{
unsigned int channum = d - (LOG_DEBUG + 1); /* convert to ZERO
* relativity */
(void) musycc_dump_ring ((ci_t *) CI, channum); /* CI implies support
* for card 0 only */
} else
{
if (cxt1e1_log_level != d)
{
pr_info("log level changed from %d to %d\n", cxt1e1_log_level, d);
cxt1e1_log_level = d; /* set new */
} else
pr_info("log level is %d\n", cxt1e1_log_level);
}
}
mch_t *
c4_find_chan (int channum)
{
ci_t *ci;
mch_t *ch;
int portnum, gchan;
for (ci = c4_list; ci; ci = ci->next)
for (portnum = 0; portnum < ci->max_port; portnum++)
for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++)
{
if ((ch = ci->port[portnum].chan[gchan]))
{
if ((ch->state != UNASSIGNED) &&
(ch->channum == channum))
return (ch);
}
}
return 0;
}
ci_t *__init
c4_new (void *hi)
{
ci_t *ci;
#ifdef SBE_MAP_DEBUG
pr_warning("c4_new() entered, ci needs %u.\n",
(unsigned int) sizeof (ci_t));
#endif
ci = (ci_t *) OS_kmalloc (sizeof (ci_t));
if (ci)
{
ci->hdw_info = hi;
ci->state = C_INIT; /* mark as hardware not available */
ci->next = c4_list;
c4_list = ci;
ci->brdno = ci->next ? ci->next->brdno + 1 : 0;
} else
pr_warning("failed CI malloc, size %u.\n",
(unsigned int) sizeof (ci_t));
if (CI == 0)
CI = ci; /* DEBUG, only board 0 usage */
return ci;
}
/***
* Check port state and set LED states using watchdog or ioctl...
* also check for in-band SF loopback commands (& cause results if they are there)
*
* Alarm function depends on comet bits indicating change in
* link status (linkMask) to keep the link status indication straight.
*
* Indications are only LED and system log -- except when ioctl is invoked.
*
* "alarmed" record (a.k.a. copyVal, in some cases below) decodes as:
*
* RMAI (E1 only) 0x100
* alarm LED on 0x80
* link LED on 0x40
* link returned 0x20 (link was down, now it's back and 'port get' hasn't run)
* change in LED 0x10 (update LED register because value has changed)
* link is down 0x08
* YelAlm(RAI) 0x04
* RedAlm 0x02
* AIS(blue)Alm 0x01
*
* note "link has returned" indication is reset on read
* (e.g. by use of the c4_control port get command)
*/
#define sbeLinkMask 0x41 /* change in signal status (lost/recovered) +
* state */
#define sbeLinkChange 0x40
#define sbeLinkDown 0x01
#define sbeAlarmsMask 0x07 /* red / yellow / blue alarm conditions */
#define sbeE1AlarmsMask 0x107 /* alarm conditions */
#define COMET_LBCMD_READ 0x80 /* read only (do not set, return read value) */
void
checkPorts (ci_t * ci)
{
#ifndef CONFIG_SBE_PMCC4_NCOMM
/*
* PORT POINT - NCOMM needs to avoid this code since the polling of
* alarms conflicts with NCOMM's interrupt servicing implementation.
*/
comet_t *comet;
volatile u_int32_t value;
u_int32_t copyVal, LEDval;
u_int8_t portnum;
LEDval = 0;
for (portnum = 0; portnum < ci->max_port; portnum++)
{
copyVal = 0x12f & (ci->alarmed[portnum]); /* port's alarm record */
comet = ci->port[portnum].cometbase;
value = pci_read_32 ((u_int32_t *) &comet->cdrc_ists) & sbeLinkMask; /* link loss reg */
if (value & sbeLinkChange) /* is there a change in the link stuff */
{
/* if there's been a change (above) and yet it's the same (below) */
if (!(((copyVal >> 3) & sbeLinkDown) ^ (value & sbeLinkDown)))
{
if (value & sbeLinkDown)
pr_warning("%s: Port %d momentarily recovered.\n",
ci->devname, portnum);
else
pr_warning("%s: Warning: Port %d link was briefly down.\n",
ci->devname, portnum);
} else if (value & sbeLinkDown)
pr_warning("%s: Warning: Port %d link is down.\n",
ci->devname, portnum);
else
{
pr_warning("%s: Port %d link has recovered.\n",
ci->devname, portnum);
copyVal |= 0x20; /* record link transition to up */
}
copyVal |= 0x10; /* change (link) --> update LEDs */
}
copyVal &= 0x137; /* clear LED & link old history bits &
* save others */
if (value & sbeLinkDown)
copyVal |= 0x08; /* record link status (now) */
else
{ /* if link is up, do this */
copyVal |= 0x40; /* LED indicate link is up */
/* Alarm things & the like ... first if E1, then if T1 */
if (IS_FRAME_ANY_E1 (ci->port[portnum].p.port_mode))
{
/*
* first check Codeword (SaX) changes & CRC and
* sub-multi-frame errors
*/
/*
* note these errors are printed every time they are detected
* vs. alarms
*/
value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_nat_ists); /* codeword */
if (value & 0x1f)
{ /* if errors (crc or smf only) */
if (value & 0x10)
pr_warning("%s: E1 Port %d Codeword Sa4 change detected.\n",
ci->devname, portnum);
if (value & 0x08)
pr_warning("%s: E1 Port %d Codeword Sa5 change detected.\n",
ci->devname, portnum);
if (value & 0x04)
pr_warning("%s: E1 Port %d Codeword Sa6 change detected.\n",
ci->devname, portnum);
if (value & 0x02)
pr_warning("%s: E1 Port %d Codeword Sa7 change detected.\n",
ci->devname, portnum);
if (value & 0x01)
pr_warning("%s: E1 Port %d Codeword Sa8 change detected.\n",
ci->devname, portnum);
}
value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_mists); /* crc & smf */
if (value & 0x3)
{ /* if errors (crc or smf only) */
if (value & sbeE1CRC)
pr_warning("%s: E1 Port %d CRC-4 error(s) detected.\n",
ci->devname, portnum);
if (value & sbeE1errSMF) /* error in sub-multiframe */
pr_warning("%s: E1 Port %d received errored SMF.\n",
ci->devname, portnum);
}
value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_masts) & 0xcc; /* alarms */
/*
* pack alarms together (bitmiser), and construct similar to
* T1
*/
/* RAI,RMAI,.,.,LOF,AIS,.,. ==> RMAI,.,.,.,.,.,RAI,LOF,AIS */
/* see 0x97 */
value = (value >> 2);
if (value & 0x30)
{
if (value & 0x20)
value |= 0x40; /* RAI */
if (value & 0x10)
value |= 0x100; /* RMAI */
value &= ~0x30;
} /* finished packing alarm in handy order */
if (value != (copyVal & sbeE1AlarmsMask))
{ /* if alarms changed */
copyVal |= 0x10;/* change LED status */
if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm))
{
copyVal &= ~sbeRedAlm;
pr_warning("%s: E1 Port %d LOF alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm))
{
copyVal |= sbeRedAlm;
pr_warning("%s: E1 Warning: Port %d LOF alarm.\n",
ci->devname, portnum);
} else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm))
{
copyVal &= ~sbeYelAlm;
pr_warning("%s: E1 Port %d RAI alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm))
{
copyVal |= sbeYelAlm;
pr_warning("%s: E1 Warning: Port %d RAI alarm.\n",
ci->devname, portnum);
} else if ((copyVal & sbeE1RMAI) && !(value & sbeE1RMAI))
{
copyVal &= ~sbeE1RMAI;
pr_warning("%s: E1 Port %d RMAI alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeE1RMAI) && (value & sbeE1RMAI))
{
copyVal |= sbeE1RMAI;
pr_warning("%s: E1 Warning: Port %d RMAI alarm.\n",
ci->devname, portnum);
} else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm))
{
copyVal &= ~sbeAISAlm;
pr_warning("%s: E1 Port %d AIS alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm))
{
copyVal |= sbeAISAlm;
pr_warning("%s: E1 Warning: Port %d AIS alarm.\n",
ci->devname, portnum);
}
}
/* end of E1 alarm code */
} else
{ /* if a T1 mode */
value = pci_read_32 ((u_int32_t *) &comet->t1_almi_ists); /* alarms */
value &= sbeAlarmsMask;
if (value != (copyVal & sbeAlarmsMask))
{ /* if alarms changed */
copyVal |= 0x10;/* change LED status */
if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm))
{
copyVal &= ~sbeRedAlm;
pr_warning("%s: Port %d red alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm))
{
copyVal |= sbeRedAlm;
pr_warning("%s: Warning: Port %d red alarm.\n",
ci->devname, portnum);
} else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm))
{
copyVal &= ~sbeYelAlm;
pr_warning("%s: Port %d yellow (RAI) alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm))
{
copyVal |= sbeYelAlm;
pr_warning("%s: Warning: Port %d yellow (RAI) alarm.\n",
ci->devname, portnum);
} else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm))
{
copyVal &= ~sbeAISAlm;
pr_warning("%s: Port %d blue (AIS) alarm ended.\n",
ci->devname, portnum);
} else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm))
{
copyVal |= sbeAISAlm;
pr_warning("%s: Warning: Port %d blue (AIS) alarm.\n",
ci->devname, portnum);
}
}
} /* end T1 mode alarm checks */
}
if (copyVal & sbeAlarmsMask)
copyVal |= 0x80; /* if alarm turn yel LED on */
if (copyVal & 0x10)
LEDval |= 0x100; /* tag if LED values have changed */
LEDval |= ((copyVal & 0xc0) >> (6 - (portnum * 2)));
ci->alarmed[portnum] &= 0xfffff000; /* out with the old (it's fff
* ... foo) */
ci->alarmed[portnum] |= (copyVal); /* in with the new */
/*
* enough with the alarms and LED's, now let's check for loopback
* requests
*/
if (IS_FRAME_ANY_T1 (ci->port[portnum].p.port_mode))
{ /* if a T1 mode */
/*
* begin in-band (SF) loopback code detection -- start by reading
* command
*/
value = pci_read_32 ((u_int32_t *) &comet->ibcd_ies); /* detect reg. */
value &= 0x3; /* trim to handy bits */
if (value & 0x2)
{ /* activate loopback (sets for deactivate
* code length) */
copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback
* mode */
if (copyVal != COMET_MDIAG_LINELB) /* don't do it again if
* already in that mode */
c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line
* loopback mode */
}
if (value & 0x1)
{ /* deactivate loopback (sets for activate
* code length) */
copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback
* mode */
if (copyVal != COMET_MDIAG_LBOFF) /* don't do it again if
* already in that mode */
c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any
* loopback mode */
}
}
if (IS_FRAME_ANY_T1ESF (ci->port[portnum].p.port_mode))
{ /* if a T1 ESF mode */
/* begin ESF loopback code */
value = pci_read_32 ((u_int32_t *) &comet->t1_rboc_sts) & 0x3f; /* read command */
if (value == 0x07)
c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line
* loopback mode */
if (value == 0x0a)
c4_loop_port (ci, portnum, COMET_MDIAG_PAYLB); /* put port in payload
* loopbk mode */
if ((value == 0x1c) || (value == 0x19) || (value == 0x12))
c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any
* loopbk mode */
if (cxt1e1_log_level >= LOG_DEBUG)
if (value != 0x3f)
pr_warning("%s: BOC value = %x on Port %d\n",
ci->devname, value, portnum);
/* end ESF loopback code */
}
}
/* if something is new, update LED's */
if (LEDval & 0x100)
pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, LEDval & 0xff);
#endif /*** CONFIG_SBE_PMCC4_NCOMM ***/
}
STATIC void
c4_watchdog (ci_t * ci)
{
if (drvr_state != SBE_DRVR_AVAILABLE)
{
if (cxt1e1_log_level >= LOG_MONITOR)
pr_info("drvr not available (%x)\n", drvr_state);
return;
}
ci->wdcount++;
checkPorts (ci);
ci->wd_notify = 0;
}
void
c4_cleanup (void)
{
ci_t *ci, *next;
mpi_t *pi;
int portnum, j;
ci = c4_list;
while (ci)
{
next = ci->next; /* protect <next> from upcoming <free> */
pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF);
for (portnum = 0; portnum < ci->max_port; portnum++)
{
pi = &ci->port[portnum];
c4_wq_port_cleanup (pi);
for (j = 0; j < MUSYCC_NCHANS; j++)
{
if (pi->chan[j])
OS_kfree (pi->chan[j]); /* free mch_t struct */
}
OS_kfree (pi->regram_saved);
}
OS_kfree (ci->iqd_p_saved);
OS_kfree (ci);
ci = next; /* cleanup next board, if any */
}
}
/*
* This function issues a write to all comet chips and expects the same data
* to be returned from the subsequent read. This determines the board build
* to be a 1-port, 2-port, or 4-port build. The value returned represents a
* bit-mask of the found ports. Only certain configurations are considered
* VALID or LEGAL builds.
*/
int
c4_get_portcfg (ci_t * ci)
{
comet_t *comet;
int portnum, mask;
u_int32_t wdata, rdata;
wdata = COMET_MDIAG_LBOFF; /* take port out of any loopback mode */
mask = 0;
for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++)
{
comet = ci->port[portnum].cometbase;
pci_write_32 ((u_int32_t *) &comet->mdiag, wdata);
rdata = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK;
if (wdata == rdata)
mask |= 1 << portnum;
}
return mask;
}
/* nothing herein should generate interrupts */
status_t __init
c4_init (ci_t * ci, u_char *func0, u_char *func1)
{
mpi_t *pi;
mch_t *ch;
static u_int32_t count = 0;
int portnum, j;
ci->state = C_INIT;
ci->brdno = count++;
ci->intlog.this_status_new = 0;
atomic_set (&ci->bh_pending, 0);
ci->reg = (struct musycc_globalr *) func0;
ci->eeprombase = (u_int32_t *) (func1 + EEPROM_OFFSET);
ci->cpldbase = (c4cpld_t *) ((u_int32_t *) (func1 + ISPLD_OFFSET));
/*** PORT POINT - the following is the first access of any type to the hardware ***/
#ifdef CONFIG_SBE_PMCC4_NCOMM
/* NCOMM driver uses INTB interrupt to monitor CPLD register */
pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC);
#else
/* standard driver POLLS for INTB via CPLD register */
pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE);
#endif
{
int pmsk;
/* need comet addresses available for determination of hardware build */
for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++)
{
pi = &ci->port[portnum];
pi->cometbase = (comet_t *) ((u_int32_t *) (func1 + COMET_OFFSET (portnum)));
pi->reg = (struct musycc_globalr *) ((u_char *) ci->reg + (portnum * 0x800));
pi->portnum = portnum;
pi->p.portnum = portnum;
pi->openchans = 0;
#ifdef SBE_MAP_DEBUG
pr_info("Comet-%d: addr = %p\n", portnum, pi->cometbase);
#endif
}
pmsk = c4_get_portcfg (ci);
switch (pmsk)
{
case 0x1:
ci->max_port = 1;
break;
case 0x3:
ci->max_port = 2;
break;
#if 0
case 0x7: /* not built, but could be... */
ci->max_port = 3;
break;
#endif
case 0xf:
ci->max_port = 4;
break;
default:
ci->max_port = 0;
pr_warning("%s: illegal port configuration (%x)\n",
ci->devname, pmsk);
return SBE_DRVR_FAIL;
}
#ifdef SBE_MAP_DEBUG
pr_info(">> %s: c4_get_build - pmsk %x max_port %x\n",
ci->devname, pmsk, ci->max_port);
#endif
}
for (portnum = 0; portnum < ci->max_port; portnum++)
{
pi = &ci->port[portnum];
pi->up = ci;
pi->sr_last = 0xffffffff;
pi->p.port_mode = CFG_FRAME_SF; /* T1 B8ZS, the default */
pi->p.portP = (CFG_CLK_PORT_EXTERNAL | CFG_LBO_LH0); /* T1 defaults */
OS_sem_init (&pi->sr_sem_busy, SEM_AVAILABLE);
OS_sem_init (&pi->sr_sem_wait, SEM_TAKEN);
for (j = 0; j < 32; j++)
{
pi->fifomap[j] = -1;
pi->tsm[j] = 0; /* no assignments, all available */
}
/* allocate channel structures for this port */
for (j = 0; j < MUSYCC_NCHANS; j++)
{
ch = OS_kmalloc (sizeof (mch_t));
if (ch)
{
pi->chan[j] = ch;
ch->state = UNASSIGNED;
ch->up = pi;
ch->gchan = (-1); /* channel assignment not yet known */
ch->channum = (-1); /* channel assignment not yet known */
ch->p.card = ci->brdno;
ch->p.port = portnum;
ch->p.channum = (-1); /* channel assignment not yet known */
ch->p.mode_56k = 0; /* default is 64kbps mode */
} else
{
pr_warning("failed mch_t malloc, port %d channel %d size %u.\n",
portnum, j, (unsigned int) sizeof (mch_t));
break;
}
}
}
{
/*
* Set LEDs through their paces to supply visual proof that LEDs are
* functional and not burnt out nor broken.
*
* YELLOW + GREEN -> OFF.
*/
pci_write_32 ((u_int32_t *) &ci->cpldbase->leds,
PMCC4_CPLD_LED_GREEN | PMCC4_CPLD_LED_YELLOW);
OS_uwait (750000, "leds");
pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF);
}
OS_init_watchdog (&ci->wd, (void (*) (void *)) c4_watchdog, ci, WATCHDOG_TIMEOUT);
return SBE_DRVR_SUCCESS;
}
/* better be fully setup to handle interrupts when you call this */
status_t __init
c4_init2 (ci_t * ci)
{
status_t ret;
/* PORT POINT: this routine generates first interrupt */
if ((ret = musycc_init (ci)) != SBE_DRVR_SUCCESS)
return ret;
#if 0
ci->p.framing_type = FRAMING_CBP;
ci->p.h110enable = 1;
#if 0
ci->p.hypersize = 0;
#else
hyperdummy = 0;
#endif
ci->p.clock = 0; /* Use internal clocking until set to
* external */
c4_card_set_params (ci, &ci->p);
#endif
OS_start_watchdog (&ci->wd);
return SBE_DRVR_SUCCESS;
}
/* This function sets the loopback mode (or clears it, as the case may be). */
int
c4_loop_port (ci_t * ci, int portnum, u_int8_t cmd)
{
comet_t *comet;
volatile u_int32_t loopValue;
comet = ci->port[portnum].cometbase;
loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK;
if (cmd & COMET_LBCMD_READ)
return loopValue; /* return the read value */
if (loopValue != cmd)
{
switch (cmd)
{
case COMET_MDIAG_LINELB:
/* set(SF)loopback down (turn off) code length to 6 bits */
pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x05);
break;
case COMET_MDIAG_LBOFF:
/* set (SF) loopback up (turn on) code length to 5 bits */
pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x00);
break;
}
pci_write_32 ((u_int32_t *) &comet->mdiag, cmd);
if (cxt1e1_log_level >= LOG_WARN)
pr_info("%s: loopback mode changed to %2x from %2x on Port %d\n",
ci->devname, cmd, loopValue, portnum);
loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK;
if (loopValue != cmd)
{
if (cxt1e1_log_level >= LOG_ERROR)
pr_info("%s: write to loop register failed, unknown state for Port %d\n",
ci->devname, portnum);
}
} else
{
if (cxt1e1_log_level >= LOG_WARN)
pr_info("%s: loopback already in that mode (%2x)\n",
ci->devname, loopValue);
}
return 0;
}
/* c4_frame_rw: read or write the comet register specified
* (modifies use of port_param to non-standard use of struct)
* Specifically:
* pp.portnum (one guess)
* pp.port_mode offset of register
* pp.portP write (or not, i.e. read)
* pp.portStatus write value
* BTW:
* pp.portStatus also used to return read value
* pp.portP also used during write, to return old reg value
*/
status_t
c4_frame_rw (ci_t * ci, struct sbecom_port_param * pp)
{
comet_t *comet;
volatile u_int32_t data;
if (pp->portnum >= ci->max_port)/* sanity check */
return ENXIO;
comet = ci->port[pp->portnum].cometbase;
data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff;
if (pp->portP)
{ /* control says this is a register
* _write_ */
if (pp->portStatus == data)
pr_info("%s: Port %d already that value! Writing again anyhow.\n",
ci->devname, pp->portnum);
pp->portP = (u_int8_t) data;
pci_write_32 ((u_int32_t *) comet + pp->port_mode,
pp->portStatus);
data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff;
}
pp->portStatus = (u_int8_t) data;
return 0;
}
/* c4_pld_rw: read or write the pld register specified
* (modifies use of port_param to non-standard use of struct)
* Specifically:
* pp.port_mode offset of register
* pp.portP write (or not, i.e. read)
* pp.portStatus write value
* BTW:
* pp.portStatus also used to return read value
* pp.portP also used during write, to return old reg value
*/
status_t
c4_pld_rw (ci_t * ci, struct sbecom_port_param * pp)
{
volatile u_int32_t *regaddr;
volatile u_int32_t data;
int regnum = pp->port_mode;
regaddr = (u_int32_t *) ci->cpldbase + regnum;
data = pci_read_32 ((u_int32_t *) regaddr) & 0xff;
if (pp->portP)
{ /* control says this is a register
* _write_ */
pp->portP = (u_int8_t) data;
pci_write_32 ((u_int32_t *) regaddr, pp->portStatus);
data = pci_read_32 ((u_int32_t *) regaddr) & 0xff;
}
pp->portStatus = (u_int8_t) data;
return 0;
}
/* c4_musycc_rw: read or write the musycc register specified
* (modifies use of port_param to non-standard use of struct)
* Specifically:
* mcp.RWportnum port number and write indication bit (0x80)
* mcp.offset offset of register
* mcp.value write value going in and read value returning
*/
/* PORT POINT: TX Subchannel Map registers are write-only
* areas within the MUSYCC and always return FF */
/* PORT POINT: regram and reg structures are minorly different and <offset> ioctl
* settings are aligned with the <reg> struct musycc_globalr{} usage.
* Also, regram is separately allocated shared memory, allocated for each port.
* PORT POINT: access offsets of 0x6000 for Msg Cfg Desc Tbl are for 4-port MUSYCC
* only. (An 8-port MUSYCC has 0x16000 offsets for accessing its upper 4 tables.)
*/
status_t
c4_musycc_rw (ci_t * ci, struct c4_musycc_param * mcp)
{
mpi_t *pi;
volatile u_int32_t *dph; /* hardware implemented register */
u_int32_t *dpr = 0; /* RAM image of registers for group command
* usage */
int offset = mcp->offset % 0x800; /* group relative address
* offset, mcp->portnum is
* not used */
int portnum, ramread = 0;
volatile u_int32_t data;
/*
* Sanity check hardware accessibility. The 0x6000 portion handles port
* numbers associated with Msg Descr Tbl decoding.
*/
portnum = (mcp->offset % 0x6000) / 0x800;
if (portnum >= ci->max_port)
return ENXIO;
pi = &ci->port[portnum];
if (mcp->offset >= 0x6000)
offset += 0x6000; /* put back in MsgCfgDesc address offset */
dph = (u_int32_t *) ((u_long) pi->reg + offset);
/* read of TX are from RAM image, since hardware returns FF */
dpr = (u_int32_t *) ((u_long) pi->regram + offset);
if (mcp->offset < 0x6000) /* non MsgDesc Tbl accesses might require
* RAM access */
{
if (offset >= 0x200 && offset < 0x380)
ramread = 1;
if (offset >= 0x10 && offset < 0x200)
ramread = 1;
}
/* read register from RAM or hardware, depending... */
if (ramread)
{
data = *dpr;
//pr_info("c4_musycc_rw: RAM addr %p read data %x (portno %x offset %x RAM ramread %x)\n", dpr, data, portnum, offset, ramread); /* RLD DEBUG */
} else
{
data = pci_read_32 ((u_int32_t *) dph);
//pr_info("c4_musycc_rw: REG addr %p read data %x (portno %x offset %x RAM ramread %x)\n", dph, data, portnum, offset, ramread); /* RLD DEBUG */
}
if (mcp->RWportnum & 0x80)
{ /* control says this is a register
* _write_ */
if (mcp->value == data)
pr_info("%s: musycc grp%d already that value! writing again anyhow.\n",
ci->devname, (mcp->RWportnum & 0x7));
/* write register RAM */
if (ramread)
*dpr = mcp->value;
/* write hardware register */
pci_write_32 ((u_int32_t *) dph, mcp->value);
}
mcp->value = data; /* return the read value (or the 'old
* value', if is write) */
return 0;
}
status_t
c4_get_port (ci_t * ci, int portnum)
{
if (portnum >= ci->max_port) /* sanity check */
return ENXIO;
SD_SEM_TAKE (&ci->sem_wdbusy, "_wd_"); /* only 1 thru here, per
* board */
checkPorts (ci);
ci->port[portnum].p.portStatus = (u_int8_t) ci->alarmed[portnum];
ci->alarmed[portnum] &= 0xdf;
SD_SEM_GIVE (&ci->sem_wdbusy); /* release per-board hold */
return 0;
}
status_t
c4_set_port (ci_t * ci, int portnum)
{
mpi_t *pi;
struct sbecom_port_param *pp;
int e1mode;
u_int8_t clck;
int i;
if (portnum >= ci->max_port) /* sanity check */
return ENXIO;
pi = &ci->port[portnum];
pp = &ci->port[portnum].p;
e1mode = IS_FRAME_ANY_E1 (pp->port_mode);
if (cxt1e1_log_level >= LOG_MONITOR2)
{
pr_info("%s: c4_set_port[%d]: entered, e1mode = %x, openchans %d.\n",
ci->devname,
portnum, e1mode, pi->openchans);
}
if (pi->openchans)
return EBUSY; /* group needs initialization only for
* first channel of a group */
{
status_t ret;
if ((ret = c4_wq_port_init (pi))) /* create/init
* workqueue_struct */
return (ret);
}
init_comet (ci, pi->cometbase, pp->port_mode, 1 /* clockmaster == true */ , pp->portP);
clck = pci_read_32 ((u_int32_t *) &ci->cpldbase->mclk) & PMCC4_CPLD_MCLK_MASK;
if (e1mode)
clck |= 1 << portnum;
else
clck &= 0xf ^ (1 << portnum);
pci_write_32 ((u_int32_t *) &ci->cpldbase->mclk, clck);
pci_write_32 ((u_int32_t *) &ci->cpldbase->mcsr, PMCC4_CPLD_MCSR_IND);
pci_write_32 ((u_int32_t *) &pi->reg->gbp, OS_vtophys (pi->regram));
/*********************************************************************/
/* ERRATA: If transparent mode is used, do not set OOFMP_DISABLE bit */
/*********************************************************************/
pi->regram->grcd =
__constant_cpu_to_le32 (MUSYCC_GRCD_RX_ENABLE |
MUSYCC_GRCD_TX_ENABLE |
MUSYCC_GRCD_OOFMP_DISABLE |
MUSYCC_GRCD_SF_ALIGN | /* per MUSYCC ERRATA,
* for T1 * fix */
MUSYCC_GRCD_COFAIRQ_DISABLE |
MUSYCC_GRCD_MC_ENABLE |
(MUSYCC_GRCD_POLLTH_32 << MUSYCC_GRCD_POLLTH_SHIFT));
pi->regram->pcd =
__constant_cpu_to_le32 ((e1mode ? 1 : 0) |
MUSYCC_PCD_TXSYNC_RISING |
MUSYCC_PCD_RXSYNC_RISING |
MUSYCC_PCD_RXDATA_RISING);
/* Message length descriptor */
pi->regram->mld = __constant_cpu_to_le32 (cxt1e1_max_mru | (cxt1e1_max_mru << 16));
/* tsm algorithm */
for (i = 0; i < 32; i++)
{
/*** ASSIGNMENT NOTES: ***/
/*** Group's channel ZERO unavailable if E1. ***/
/*** Group's channel 16 unavailable if E1 CAS. ***/
/*** Group's channels 24-31 unavailable if T1. ***/
if (((i == 0) && e1mode) ||
((i == 16) && ((pp->port_mode == CFG_FRAME_E1CRC_CAS) || (pp->port_mode == CFG_FRAME_E1CRC_CAS_AMI)))
|| ((i > 23) && (!e1mode)))
{
pi->tsm[i] = 0xff; /* make tslot unavailable for this mode */
} else
{
pi->tsm[i] = 0x00; /* make tslot available for assignment */
}
}
for (i = 0; i < MUSYCC_NCHANS; i++)
{
pi->regram->ttsm[i] = 0;
pi->regram->rtsm[i] = 0;
}
FLUSH_MEM_WRITE ();
musycc_serv_req (pi, SR_GROUP_INIT | SR_RX_DIRECTION);
musycc_serv_req (pi, SR_GROUP_INIT | SR_TX_DIRECTION);
musycc_init_mdt (pi);
pi->group_is_set = 1;
pi->p = *pp;
return 0;
}
unsigned int max_int = 0;
status_t
c4_new_chan (ci_t * ci, int portnum, int channum, void *user)
{
mpi_t *pi;
mch_t *ch;
int gchan;
if (c4_find_chan (channum)) /* a new channel shouldn't already exist */
return EEXIST;
if (portnum >= ci->max_port) /* sanity check */
return ENXIO;
pi = &(ci->port[portnum]);
/* find any available channel within this port */
for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++)
{
ch = pi->chan[gchan];
if (ch && ch->state == UNASSIGNED) /* no assignment is good! */
break;
}
if (gchan == MUSYCC_NCHANS) /* exhausted table, all were assigned */
return ENFILE;
ch->up = pi;
/* NOTE: mch_t already cleared during OS_kmalloc() */
ch->state = DOWN;
ch->user = user;
ch->gchan = gchan;
ch->channum = channum; /* mark our channel assignment */
ch->p.channum = channum;
#if 1
ch->p.card = ci->brdno;
ch->p.port = portnum;
#endif
ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16;
ch->p.idlecode = CFG_CH_FLAG_7E;
ch->p.pad_fill_count = 2;
spin_lock_init (&ch->ch_rxlock);
spin_lock_init (&ch->ch_txlock);
{
status_t ret;
if ((ret = c4_wk_chan_init (pi, ch)))
return ret;
}
/* save off interface assignments which bound a board */
if (ci->first_if == 0) /* first channel registered is assumed to
* be the lowest channel */
{
ci->first_if = ci->last_if = user;
ci->first_channum = ci->last_channum = channum;
} else
{
ci->last_if = user;
if (ci->last_channum < channum) /* higher number channel found */
ci->last_channum = channum;
}
return 0;
}
status_t
c4_del_chan (int channum)
{
mch_t *ch;
if (!(ch = c4_find_chan (channum)))
return ENOENT;
if (ch->state == UP)
musycc_chan_down ((ci_t *) 0, channum);
ch->state = UNASSIGNED;
ch->gchan = (-1);
ch->channum = (-1);
ch->p.channum = (-1);
return 0;
}
status_t
c4_del_chan_stats (int channum)
{
mch_t *ch;
if (!(ch = c4_find_chan (channum)))
return ENOENT;
memset (&ch->s, 0, sizeof (struct sbecom_chan_stats));
return 0;
}
status_t
c4_set_chan (int channum, struct sbecom_chan_param * p)
{
mch_t *ch;
int i, x = 0;
if (!(ch = c4_find_chan (channum)))
return ENOENT;
#if 1
if (ch->p.card != p->card ||
ch->p.port != p->port ||
ch->p.channum != p->channum)
return EINVAL;
#endif
if (!(ch->up->group_is_set))
{
return EIO; /* out of order, SET_PORT command
* required prior to first group's
* SET_CHAN command */
}
/*
* Check for change of parameter settings in order to invoke closing of
* channel prior to hardware poking.
*/
if (ch->p.status != p->status || ch->p.chan_mode != p->chan_mode ||
ch->p.data_inv != p->data_inv || ch->p.intr_mask != p->intr_mask ||
ch->txd_free < ch->txd_num) /* to clear out queued messages */
x = 1; /* we have a change requested */
for (i = 0; i < 32; i++) /* check for timeslot mapping changes */
if (ch->p.bitmask[i] != p->bitmask[i])
x = 1; /* we have a change requested */
ch->p = *p;
if (x && (ch->state == UP)) /* if change request and channel is
* open... */
{
status_t ret;
if ((ret = musycc_chan_down ((ci_t *) 0, channum)))
return ret;
if ((ret = c4_chan_up (ch->up->up, channum)))
return ret;
sd_enable_xmit (ch->user); /* re-enable to catch flow controlled
* channel */
}
return 0;
}
status_t
c4_get_chan (int channum, struct sbecom_chan_param * p)
{
mch_t *ch;
if (!(ch = c4_find_chan (channum)))
return ENOENT;
*p = ch->p;
return 0;
}
status_t
c4_get_chan_stats (int channum, struct sbecom_chan_stats * p)
{
mch_t *ch;
if (!(ch = c4_find_chan (channum)))
return ENOENT;
*p = ch->s;
p->tx_pending = atomic_read (&ch->tx_pending);
return 0;
}
STATIC int
c4_fifo_alloc (mpi_t * pi, int chan, int *len)
{
int i, l = 0, start = 0, max = 0, maxstart = 0;
for (i = 0; i < 32; i++)
{
if (pi->fifomap[i] != -1)
{
l = 0;
start = i + 1;
continue;
}
++l;
if (l > max)
{
max = l;
maxstart = start;
}
if (max == *len)
break;
}
if (max != *len)
{
if (cxt1e1_log_level >= LOG_WARN)
pr_info("%s: wanted to allocate %d fifo space, but got only %d\n",
pi->up->devname, *len, max);
*len = max;
}
if (cxt1e1_log_level >= LOG_DEBUG)
pr_info("%s: allocated %d fifo at %d for channel %d/%d\n",
pi->up->devname, max, start, chan, pi->p.portnum);
for (i = maxstart; i < (maxstart + max); i++)
pi->fifomap[i] = chan;
return start;
}
void
c4_fifo_free (mpi_t * pi, int chan)
{
int i;
if (cxt1e1_log_level >= LOG_DEBUG)
pr_info("%s: deallocated fifo for channel %d/%d\n",
pi->up->devname, chan, pi->p.portnum);
for (i = 0; i < 32; i++)
if (pi->fifomap[i] == chan)
pi->fifomap[i] = -1;
}
status_t
c4_chan_up (ci_t * ci, int channum)
{
mpi_t *pi;
mch_t *ch;
struct mbuf *m;
struct mdesc *md;
int nts, nbuf, txnum, rxnum;
int addr, i, j, gchan;
u_int32_t tmp; /* for optimizing conversion across BE
* platform */
if (!(ch = c4_find_chan (channum)))
return ENOENT;
if (ch->state == UP)
{
if (cxt1e1_log_level >= LOG_MONITOR)
pr_info("%s: channel already UP, graceful early exit\n",
ci->devname);
return 0;
}
pi = ch->up;
gchan = ch->gchan;
/* find nts ('number of timeslots') */
nts = 0;
for (i = 0; i < 32; i++)
{
if (ch->p.bitmask[i] & pi->tsm[i])
{
if (1 || cxt1e1_log_level >= LOG_WARN)
{
pr_info("%s: c4_chan_up[%d] EINVAL (attempt to cfg in-use or unavailable TimeSlot[%d])\n",
ci->devname, channum, i);
pr_info("+ ask4 %x, currently %x\n",
ch->p.bitmask[i], pi->tsm[i]);
}
return EINVAL;
}
for (j = 0; j < 8; j++)
if (ch->p.bitmask[i] & (1 << j))
nts++;
}
nbuf = nts / 8 ? nts / 8 : 1;
if (!nbuf)
{
/* if( cxt1e1_log_level >= LOG_WARN) */
pr_info("%s: c4_chan_up[%d] ENOBUFS (no TimeSlots assigned)\n",
ci->devname, channum);
return ENOBUFS; /* this should not happen */
}
addr = c4_fifo_alloc (pi, gchan, &nbuf);
ch->state = UP;
/* Setup the Time Slot Map */
musycc_update_timeslots (pi);
/* ch->tx_limit = nts; */
ch->s.tx_pending = 0;
/* Set Channel Configuration Descriptors */
{
u_int32_t ccd;
ccd = musycc_chan_proto (ch->p.chan_mode) << MUSYCC_CCD_PROTO_SHIFT;
if ((ch->p.chan_mode == CFG_CH_PROTO_ISLP_MODE) ||
(ch->p.chan_mode == CFG_CH_PROTO_TRANS))
{
ccd |= MUSYCC_CCD_FCS_XFER; /* Non FSC Mode */
}
ccd |= 2 << MUSYCC_CCD_MAX_LENGTH; /* Select second MTU */
ccd |= ch->p.intr_mask;
ccd |= addr << MUSYCC_CCD_BUFFER_LOC;
if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
ccd |= (nbuf) << MUSYCC_CCD_BUFFER_LENGTH;
else
ccd |= (nbuf - 1) << MUSYCC_CCD_BUFFER_LENGTH;
if (ch->p.data_inv & CFG_CH_DINV_TX)
ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */
pi->regram->tcct[gchan] = cpu_to_le32 (ccd);
if (ch->p.data_inv & CFG_CH_DINV_RX)
ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */
else
ccd &= ~MUSYCC_CCD_INVERT_DATA; /* take away data inversion */
pi->regram->rcct[gchan] = cpu_to_le32 (ccd);
FLUSH_MEM_WRITE ();
}
/* Reread the Channel Configuration Descriptor for this channel */
musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_RX_DIRECTION | gchan);
musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_TX_DIRECTION | gchan);
/*
* Figure out how many buffers we want. If the customer has changed from
* the defaults, then use the changed values. Otherwise, use Transparent
* mode's specific minimum default settings.
*/
if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
{
if (max_rxdesc_used == max_rxdesc_default) /* use default setting */
max_rxdesc_used = MUSYCC_RXDESC_TRANS;
if (max_txdesc_used == max_txdesc_default) /* use default setting */
max_txdesc_used = MUSYCC_TXDESC_TRANS;
}
/*
* Increase counts when hyperchanneling, since this implies an increase
* in throughput per channel
*/
rxnum = max_rxdesc_used + (nts / 4);
txnum = max_txdesc_used + (nts / 4);
#if 0
/* DEBUG INFO */
if (cxt1e1_log_level >= LOG_MONITOR)
pr_info("%s: mode %x rxnum %d (rxused %d def %d) txnum %d (txused %d def %d)\n",
ci->devname, ch->p.chan_mode,
rxnum, max_rxdesc_used, max_rxdesc_default,
txnum, max_txdesc_used, max_txdesc_default);
#endif
ch->rxd_num = rxnum;
ch->txd_num = txnum;
ch->rxix_irq_srv = 0;
ch->mdr = OS_kmalloc (sizeof (struct mdesc) * rxnum);
ch->mdt = OS_kmalloc (sizeof (struct mdesc) * txnum);
if (ch->p.chan_mode == CFG_CH_PROTO_TRANS)
tmp = __constant_cpu_to_le32 (cxt1e1_max_mru | EOBIRQ_ENABLE);
else
tmp = __constant_cpu_to_le32 (cxt1e1_max_mru);
for (i = 0, md = ch->mdr; i < rxnum; i++, md++)
{
if (i == (rxnum - 1))
{
md->snext = &ch->mdr[0];/* wrapness */
} else
{
md->snext = &ch->mdr[i + 1];
}
md->next = cpu_to_le32 (OS_vtophys (md->snext));
if (!(m = OS_mem_token_alloc (cxt1e1_max_mru)))
{
if (cxt1e1_log_level >= LOG_MONITOR)
pr_info("%s: c4_chan_up[%d] - token alloc failure, size = %d.\n",
ci->devname, channum, cxt1e1_max_mru);
goto errfree;
}
md->mem_token = m;
md->data = cpu_to_le32 (OS_vtophys (OS_mem_token_data (m)));
md->status = tmp | MUSYCC_RX_OWNED; /* MUSYCC owns RX descriptor **
* CODING NOTE:
* MUSYCC_RX_OWNED = 0 so no
* need to byteSwap */
}
for (i = 0, md = ch->mdt; i < txnum; i++, md++)
{
md->status = HOST_TX_OWNED; /* Host owns TX descriptor ** CODING
* NOTE: HOST_TX_OWNED = 0 so no need to
* byteSwap */
md->mem_token = 0;
md->data = 0;
if (i == (txnum - 1))
{
md->snext = &ch->mdt[0];/* wrapness */
} else
{
md->snext = &ch->mdt[i + 1];
}
md->next = cpu_to_le32 (OS_vtophys (md->snext));
}
ch->txd_irq_srv = ch->txd_usr_add = &ch->mdt[0];
ch->txd_free = txnum;
ch->tx_full = 0;
ch->txd_required = 0;
/* Configure it into the chip */
tmp = cpu_to_le32 (OS_vtophys (&ch->mdt[0]));
pi->regram->thp[gchan] = tmp;
pi->regram->tmp[gchan] = tmp;
tmp = cpu_to_le32 (OS_vtophys (&ch->mdr[0]));
pi->regram->rhp[gchan] = tmp;
pi->regram->rmp[gchan] = tmp;
/* Activate the Channel */
FLUSH_MEM_WRITE ();
if (ch->p.status & RX_ENABLED)
{
#ifdef RLD_TRANS_DEBUG
pr_info("++ c4_chan_up() CHAN RX ACTIVATE: chan %d\n", ch->channum);
#endif
ch->ch_start_rx = 0; /* we are restarting RX... */
musycc_serv_req (pi, SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION | gchan);
}
if (ch->p.status & TX_ENABLED)
{
#ifdef RLD_TRANS_DEBUG
pr_info("++ c4_chan_up() CHAN TX ACTIVATE: chan %d <delayed>\n", ch->channum);
#endif
ch->ch_start_tx = CH_START_TX_1ST; /* we are delaying start
* until receipt from user of
* first packet to transmit. */
}
ch->status = ch->p.status;
pi->openchans++;
return 0;
errfree:
while (i > 0)
{
/* Don't leak all the previously allocated mbufs in this loop */
i--;
OS_mem_token_free (ch->mdr[i].mem_token);
}
OS_kfree (ch->mdt);
ch->mdt = 0;
ch->txd_num = 0;
OS_kfree (ch->mdr);
ch->mdr = 0;
ch->rxd_num = 0;
ch->state = DOWN;
return ENOBUFS;
}
/* stop the hardware from servicing & interrupting */
void
c4_stopwd (ci_t * ci)
{
OS_stop_watchdog (&ci->wd);
SD_SEM_TAKE (&ci->sem_wdbusy, "_stop_"); /* ensure WD not running */
SD_SEM_GIVE (&ci->sem_wdbusy);
}
void
sbecom_get_brdinfo (ci_t * ci, struct sbe_brd_info * bip, u_int8_t *bsn)
{
char *np;
u_int32_t sn = 0;
int i;
bip->brdno = ci->brdno; /* our board number */
bip->brd_id = ci->brd_id;
bip->brd_hdw_id = ci->hdw_bid;
bip->brd_chan_cnt = MUSYCC_NCHANS * ci->max_port; /* number of channels
* being used */
bip->brd_port_cnt = ci->max_port; /* number of ports being used */
bip->brd_pci_speed = BINFO_PCI_SPEED_unk; /* PCI speed not yet
* determinable */
if (ci->first_if)
{
{
struct net_device *dev;
dev = (struct net_device *) ci->first_if;
np = (char *) dev->name;
}
strncpy (bip->first_iname, np, CHNM_STRLEN - 1);
} else
strcpy (bip->first_iname, "<NULL>");
if (ci->last_if)
{
{
struct net_device *dev;
dev = (struct net_device *) ci->last_if;
np = (char *) dev->name;
}
strncpy (bip->last_iname, np, CHNM_STRLEN - 1);
} else
strcpy (bip->last_iname, "<NULL>");
if (bsn)
{
for (i = 0; i < 3; i++)
{
bip->brd_mac_addr[i] = *bsn++;
}
for (; i < 6; i++)
{
bip->brd_mac_addr[i] = *bsn;
sn = (sn << 8) | *bsn++;
}
} else
{
for (i = 0; i < 6; i++)
bip->brd_mac_addr[i] = 0;
}
bip->brd_sn = sn;
}
status_t
c4_get_iidinfo (ci_t * ci, struct sbe_iid_info * iip)
{
struct net_device *dev;
char *np;
if (!(dev = getuserbychan (iip->channum)))
return ENOENT;
np = dev->name;
strncpy (iip->iname, np, CHNM_STRLEN - 1);
return 0;
}
#ifdef CONFIG_SBE_PMCC4_NCOMM
void (*nciInterrupt[MAX_BOARDS][4]) (void);
extern void wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler);
void
wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler)
{
if (cardID < MAX_BOARDS) /* sanity check */
nciInterrupt[cardID][deviceID] = handler;
}
irqreturn_t
c4_ebus_intr_th_handler (void *devp)
{
ci_t *ci = (ci_t *) devp;
volatile u_int32_t ists;
int handled = 0;
int brdno;
/* which COMET caused the interrupt */
brdno = ci->brdno;
ists = pci_read_32 ((u_int32_t *) &ci->cpldbase->intr);
if (ists & PMCC4_CPLD_INTR_CMT_1)
{
handled = 0x1;
if (nciInterrupt[brdno][0] != NULL)
(*nciInterrupt[brdno][0]) ();
}
if (ists & PMCC4_CPLD_INTR_CMT_2)
{
handled |= 0x2;
if (nciInterrupt[brdno][1] != NULL)
(*nciInterrupt[brdno][1]) ();
}
if (ists & PMCC4_CPLD_INTR_CMT_3)
{
handled |= 0x4;
if (nciInterrupt[brdno][2] != NULL)
(*nciInterrupt[brdno][2]) ();
}
if (ists & PMCC4_CPLD_INTR_CMT_4)
{
handled |= 0x8;
if (nciInterrupt[brdno][3] != NULL)
(*nciInterrupt[brdno][3]) ();
}
#if 0
/*** Test code just de-implements the asserted interrupt. Alternate
vendor will supply COMET interrupt handling code herein or such.
***/
pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE);
#endif
return IRQ_RETVAL (handled);
}
unsigned long
wanpmcC4T1E1_getBaseAddress (int cardID, int deviceID)
{
ci_t *ci;
unsigned long base = 0;
ci = c4_list;
while (ci)
{
if (ci->brdno == cardID) /* found valid device */
{
if (deviceID < ci->max_port) /* comet is supported */
base = ((unsigned long) ci->port[deviceID].cometbase);
break;
}
ci = ci->next; /* next board, if any */
}
return (base);
}
#endif /*** CONFIG_SBE_PMCC4_NCOMM ***/
/*** End-of-File ***/