diff options
Diffstat (limited to 'drivers/staging/cxt1e1/pmcc4_drv.c')
| -rw-r--r-- | drivers/staging/cxt1e1/pmcc4_drv.c | 1613 |
1 files changed, 0 insertions, 1613 deletions
diff --git a/drivers/staging/cxt1e1/pmcc4_drv.c b/drivers/staging/cxt1e1/pmcc4_drv.c deleted file mode 100644 index 76bebdd18b3a..000000000000 --- a/drivers/staging/cxt1e1/pmcc4_drv.c +++ /dev/null @@ -1,1613 +0,0 @@ -/*----------------------------------------------------------------------------- - * 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. - *----------------------------------------------------------------------------- - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#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 <linux/io.h> - -#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" - -#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 = NULL; -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++) - { - ch = ci->port[portnum].chan[gchan]; - if (ch) { - if ((ch->state != UNASSIGNED) && - (ch->channum == channum)) - return ch; - } - } - return NULL; -} - -/*** - * 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. - */ - - struct s_comet_reg *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]) - kfree(pi->chan[j]); /* free mch_t struct */ - } - kfree(pi->regram_saved); - } - kfree(ci->iqd_p_saved); - 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) -{ - struct s_comet_reg *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 = (struct s_comet_reg *) ((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 = kzalloc(sizeof(mch_t), GFP_KERNEL | GFP_DMA); - 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 */ - ret = musycc_init(ci); - if (ret != 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) -{ - struct s_comet_reg *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) -{ - struct s_comet_reg *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 = NULL; /* 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; - - ret = c4_wq_port_init(pi); - if (ret) /* 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; - - ret = c4_wk_chan_init(pi, ch); - if (ret) - return ret; - } - - /* save off interface assignments which bound a board */ - if (!ci->first_if) /* 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; - - ch = c4_find_chan(channum); - if (!ch) - 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; - - ch = c4_find_chan(channum); - if (!ch) - 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; - - ch = c4_find_chan(channum); - if (!ch) - 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; - - ret = musycc_chan_down((ci_t *)0, channum); - if (ret) - return ret; - ret = c4_chan_up(ch->up->up, channum); - if (ret) - 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; - - ch = c4_find_chan(channum); - if (!ch) - return -ENOENT; - - *p = ch->p; - return 0; -} - -status_t -c4_get_chan_stats (int channum, struct sbecom_chan_stats *p) -{ - mch_t *ch; - - ch = c4_find_chan(channum); - if (!ch) - 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 */ - - ch = c4_find_chan(channum); - if (!ch) - 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 = kzalloc(sizeof(struct mdesc) * rxnum, GFP_KERNEL | GFP_DMA); - ch->mdt = kzalloc(sizeof(struct mdesc) * txnum, GFP_KERNEL | GFP_DMA); - 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)); - - m = OS_mem_token_alloc(cxt1e1_max_mru); - if (!m) { - 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 = NULL; - 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); - } - kfree(ch->mdt); - ch->mdt = NULL; - ch->txd_num = 0; - kfree(ch->mdr); - ch->mdr = NULL; - 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; - - dev = getuserbychan(iip->channum); - if (!dev) - return -ENOENT; - - np = dev->name; - strncpy (iip->iname, np, CHNM_STRLEN - 1); - iip->iname[CHNM_STRLEN - 1] = '\0'; - 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 ***/ |