/*
* Hardware-level driver for the SliceCOM board for Linux kernels 2.4.X
*
* Current maintainer / latest changes: Pasztor Szilard <don@itc.hu>
*
* Original author: Bartok Istvan <bartoki@itc.hu>
* Based on skeleton by Tivadar Szemethy <tiv@itc.hu>
*
* 0.51:
* - port for 2.4.x
* - clean up some code, make it more portable
* - busted direct hardware access through mapped memory
* - fix a possible race
* - prevent procfs buffer overflow
*
* 0.50:
* - support for the pcicom board, lots of rearrangements
* - handle modem status lines
*
* 0.50a:
* - fix for falc version 1.0
*
* 0.50b: T&t
* - fix for bad localbus
*/
#define VERSION "0.51"
#define VERSIONSTR "SliceCOM v" VERSION ", 2002/01/07\n"
#include <linux/config.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <asm/delay.h>
#include <asm/types.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/init.h>
#define COMX_NEW
#ifndef COMX_NEW
#include "../include/comx.h"
#include "../include/munich32x.h"
#include "../include/falc-lh.h"
#else
#include "comx.h"
#include "munich32x.h"
#include "falc-lh.h"
#endif
MODULE_AUTHOR("Bartok Istvan <bartoki@itc.hu>, Gergely Madarasz <gorgo@itc.hu>, Szilard Pasztor <don@itc.hu>");
MODULE_DESCRIPTION("Hardware-level driver for the SliceCOM and PciCOM (WelCOM) adapters");
MODULE_LICENSE("GPL");
/*
* TODO: az ilyenek a comxhw.h -ban szoktak lenni, idovel menjenek majd oda:
*/
#define FILENAME_BOARDNUM "boardnum" /* /proc/comx/comx0.1/boardnum */
#define FILENAME_TIMESLOTS "timeslots" /* /proc/comx/comx0.1/timeslots */
#define FILENAME_FRAMING "framing" /* /proc/comx/comx0.1/framing */
#define FILENAME_LINECODE "linecode" /* /proc/comx/comx0.1/linecode */
#define FILENAME_CLOCK_SOURCE "clock_source" /* /proc/comx/comx0.1/clock_source */
#define FILENAME_LOOPBACK "loopback" /* /proc/comx/comx0.1/loopback */
#define FILENAME_REG "reg" /* /proc/comx/comx0.1/reg */
#define FILENAME_LBIREG "lbireg" /* /proc/comx/comx0.1/lbireg */
#define SLICECOM_BOARDNUM_DEFAULT 0
#define SLICECOM_FRAMING_CRC4 1
#define SLICECOM_FRAMING_NO_CRC4 2
#define SLICECOM_FRAMING_DEFAULT SLICECOM_FRAMING_CRC4
#define SLICECOM_LINECODE_HDB3 1
#define SLICECOM_LINECODE_AMI 2
#define SLICECOM_LINECODE_DEFAULT SLICECOM_LINECODE_HDB3
#define SLICECOM_CLOCK_SOURCE_LINE 1
#define SLICECOM_CLOCK_SOURCE_INTERNAL 2
#define SLICECOM_CLOCK_SOURCE_DEFAULT SLICECOM_CLOCK_SOURCE_LINE
#define SLICECOM_LOOPBACK_NONE 1
#define SLICECOM_LOOPBACK_LOCAL 2
#define SLICECOM_LOOPBACK_REMOTE 3
#define SLICECOM_LOOPBACK_DEFAULT SLICECOM_LOOPBACK_NONE
#define MUNICH_VIRT(addr) (void *)(&bar1[addr])
struct slicecom_stringtable
{
char *name;
int value;
};
/* A convention: keep "default" the last not NULL when reading from /proc,
"error" is an indication that something went wrong, we have an undefined value */
struct slicecom_stringtable slicecom_framings[] =
{
{"crc4", SLICECOM_FRAMING_CRC4},
{"no-crc4", SLICECOM_FRAMING_NO_CRC4},
{"default", SLICECOM_FRAMING_DEFAULT},
{"error", 0}
};
struct slicecom_stringtable slicecom_linecodes[] =
{
{"hdb3", SLICECOM_LINECODE_HDB3},
{"ami", SLICECOM_LINECODE_AMI},
{"default", SLICECOM_LINECODE_DEFAULT},
{"error", 0}
};
struct slicecom_stringtable slicecom_clock_sources[] =
{
{"line", SLICECOM_CLOCK_SOURCE_LINE},
{"internal", SLICECOM_CLOCK_SOURCE_INTERNAL},
{"default", SLICECOM_CLOCK_SOURCE_DEFAULT},
{"error", 0}
};
struct slicecom_stringtable slicecom_loopbacks[] =
{
{"none", SLICECOM_LOOPBACK_NONE},
{"local", SLICECOM_LOOPBACK_LOCAL},
{"remote", SLICECOM_LOOPBACK_REMOTE},
{"default", SLICECOM_LOOPBACK_DEFAULT},
{"error", 0}
};
/*
* Some tunable values...
*
* Note: when tuning values which change the length of text in
* /proc/comx/comx[n]/status, keep in mind that it must be shorter then
* PAGESIZE !
*/
#define MAX_BOARDS 4 /* ezzel 4 kartya lehet a gepben: 0..3 */
#define RX_DESC_MAX 8 /* Rx ring size, must be >= 4 */
#define TX_DESC_MAX 4 /* Tx ring size, must be >= 2 */
/* a sokkal hosszabb Tx ring mar ronthatja a nem-FIFO packet */
/* schedulerek (fair queueing, stb.) hatekonysagat. */
#define MAX_WORK 10 /* TOD: update the info max. ennyi-1 esemenyt dolgoz fel egy interrupt hivasnal */
/*
* These are tunable too, but don't touch them without fully understanding what is happening
*/
#define UDELAY 20 /* We wait UDELAY usecs with disabled interrupts before and */
/* after each command to avoid writing into each other's */
/* ccb->action_spec. A _send_packet nem var, mert azt az */
/* _interrupt()-bol is meghivhatja a LINE_tx() */
/*
* Just to avoid warnings about implicit declarations:
*/
static int MUNICH_close(struct net_device *dev);
static struct comx_hardware slicecomhw;
static struct comx_hardware pcicomhw;
static unsigned long flags;
static spinlock_t mister_lock = SPIN_LOCK_UNLOCKED;
typedef volatile struct /* Time Slot Assignment */
{
u32 rxfillmask:8, // ----------------------------+------+
// | |
rxchannel:5, // ----------------------+---+ | |
rti:1, // ---------------------+| | | |
res2:2, // -------------------++|| | | |
// |||| | | |
txfillmask:8, // ----------+------+ |||| | | |
// | | |||| | | |
txchannel:5, // ----+---+ | | |||| | | |
tti:1, // ---+| | | | |||| | | |
res1:2; // -++|| | | | |||| | | |
// 3 2 1
// 10987654 32109876 54321098 76543210
} timeslot_spec_t;
typedef volatile struct /* Receive Descriptor */
{
u32 zero1:16, no:13, hi:1, hold:1, zero2:1;
u32 next;
u32 data;
u32 zero3:8, status:8, bno:13, zero4:1, c:1, fe:1;
} rx_desc_t;
typedef volatile struct /* Transmit Descriptor */
{
u32 fnum:11, csm:1, no13:1, zero1:2, v110:1, no:13, hi:1, hold:1, fe:1;
u32 next;
u32 data;
} tx_desc_t;
typedef volatile struct /* Channel Specification */
{
u32 iftf:1, mode:2, fa:1, trv:2, crc:1, inv:1, cs:1, tflag:7, ra:1, ro:1,
th:1, ta:1, to:1, ti:1, ri:1, nitbs:1, fit:1, fir:1, re:1, te:1, ch:1,
ifc:1, sfe:1, fe2:1;
u32 frda;
u32 ftda;
u32 itbs:6, zero1:26;
} channel_spec_t;
typedef volatile struct /* Configuration Control Block */
{
u32 action_spec;
u32 reserved1;
u32 reserved2;
timeslot_spec_t timeslot_spec[32];
channel_spec_t channel_spec[32];
u32 current_rx_desc[32];
u32 current_tx_desc[32];
u32 csa; /* Control Start Address. CSA = *CCBA; CCB = *CSA */
/* MUNICH does it like: CCB = *( *CCBA ) */
} munich_ccb_t;
typedef volatile struct /* Entry in the interrupt queue */
{
u32 all;
} munich_intq_t;
#define MUNICH_INTQLEN 63 /* Rx/Tx Interrupt Queue Length
(not the real len, but the TIQL/RIQL value) */
#define MUNICH_INTQMAX ( 16*(MUNICH_INTQLEN+1) ) /* Rx/Tx/Periph Interrupt Queue size in munich_intq_t's */
#define MUNICH_INTQSIZE ( 4*MUNICH_INTQMAX ) /* Rx/Tx/Periph Interrupt Queue size in bytes */
#define MUNICH_PIQLEN 4 /* Peripheral Interrupt Queue Length. Unlike the RIQL/TIQL, */
#define MUNICH_PIQMAX ( 4*MUNICH_PIQLEN ) /* PIQL register needs it like this */
#define MUNICH_PIQSIZE ( 4*MUNICH_PIQMAX )
typedef volatile u32 vol_u32; /* TOD: ezek megszunnek ha atirom readw()/writew()-re - kész */
typedef volatile u8 vol_u8;
typedef volatile struct /* counters of E1-errors and errored seconds, see rfc2495 */
{
/* use here only unsigned ints, we depend on it when calculating the sum for the last N intervals */
unsigned line_code_violations, /* AMI: bipolar violations, HDB3: hdb3 violations */
path_code_violations, /* FAS errors and CRC4 errors */
e_bit_errors, /* E-Bit Errors (the remote side received from us with CRC4-error) */
slip_secs, /* number of seconds with (receive) Controlled Slip(s) */
fr_loss_secs, /* number of seconds an Out Of Frame defect was detected */
line_err_secs, /* number of seconds with one or more Line Code Violations */
degraded_mins, /* Degraded Minute - the estimated error rate is >1E-6, but <1E-3 */
errored_secs, /* Errored Second - at least one of these happened:
- Path Code Violation
- Out Of Frame defect
- Slip
- receiving AIS
- not incremented during an Unavailable Second */
bursty_err_secs, /* Bursty Errored Second: (rfc2495 says it does not apply to E1)
- Path Code Violations >1, but <320
- not a Severely Errored Second
- no AIS
- not incremented during an Unavailable Second */
severely_err_secs, /* Severely Errored Second:
- CRC4: >=832 Path COde Violations || >0 Out Of Frame defects
- noCRC4: >=2048 Line Code Violations
- not incremented during an Unavailable Second */
unavail_secs; /* number of Unavailable Seconds. Unavailable state is said after:
- 10 contiguous Severely Errored Seconds
- or RAI || AIS || LOF || LOS
- (any) loopback has been set */
/*
* we do not strictly comply to the rfc: we do not retroactively reduce errored_secs,
* bursty_err_secs, severely_err_secs when 'unavailable state' is reached
*/
} e1_stats_t;
typedef volatile struct /* ezek board-adatok, nem lehetnek a slicecom_privdata -ban */
{
int use_count; /* num. of interfaces using the board */
int irq; /* a kartya irq-ja. belemasoljuk a dev->irq -kba is, de csak hogy */
/* szebb legyen az ifconfig outputja */
/* ha != 0, az azt jelenti hogy az az irq most nekunk sikeresen */
/* le van foglalva */
struct pci_dev *pci; /* a kartya PCI strukturaja. NULL, ha nincs kartya */
u32 *bar1; /* pci->base_address[0] ioremap()-ed by munich_probe(), */
/* on x86 can be used both as a bus or virtual address. */
/* These are the Munich's registers */
u8 *lbi; /* pci->base_address[1] ioremap()-ed by munich_probe(), */
/* this is a 256-byte range, the start of the LBI on the board */
munich_ccb_t *ccb; /* virtual address of CCB */
munich_intq_t *tiq; /* Tx Interrupt Queue */
munich_intq_t *riq; /* Rx Interrupt Queue */
munich_intq_t *piq; /* Peripheral Interrupt Queue (FALC interrupts arrive here) */
int tiq_ptr, /* A 'current' helyek a tiq/riq/piq -ban. */
riq_ptr, /* amikor feldolgoztam az interruptokat, a legelso ures */
piq_ptr; /* interrupt_information szora mutatnak. */
struct net_device *twins[32]; /* MUNICH channel -> network interface assignment */
unsigned long lastcheck; /* When were the Rx rings last checked. Time in jiffies */
struct timer_list modemline_timer;
char isx21;
char lineup;
char framing; /* a beallitasok tarolasa */
char linecode;
char clock_source;
char loopback;
char devname[30]; /* what to show in /proc/interrupts */
unsigned histogram[MAX_WORK]; /* number of processed events in the interrupt loop */
unsigned stat_pri_races; /* number of special events, we try to handle them */
unsigned stat_pti_races;
unsigned stat_pri_races_missed; /* when it can not be handled, because of MAX_WORK */
unsigned stat_pti_races_missed;
#define SLICECOM_BOARD_INTERVALS_SIZE 97
e1_stats_t intervals[SLICECOM_BOARD_INTERVALS_SIZE]; /* E1 line statistics */
unsigned current_interval; /* pointer to the current interval */
unsigned elapsed_seconds; /* elapsed seconds from the start of the current interval */
unsigned ses_seconds; /* counter of contiguous Severely Errored Seconds */
unsigned is_unavailable; /* set to 1 after 10 contiguous Severely Errored Seconds */
unsigned no_ses_seconds; /* contiguous Severely Error -free seconds in unavail state */
unsigned deg_elapsed_seconds; /* for counting the 'Degraded Mins' */
unsigned deg_cumulated_errors;
struct module *owner; /* pointer to our module to avoid module load races */
} munich_board_t;
struct slicecom_privdata
{
int busy; /* transmitter busy - number of packets in the Tx ring */
int channel; /* Munich logical channel ('channel-group' in Cisco) */
unsigned boardnum;
u32 timeslots; /* i-th bit means i-th timeslot is our */
int tx_ring_hist[TX_DESC_MAX]; /* histogram: number of packets in Tx ring when _send_packet is called */
tx_desc_t tx_desc[TX_DESC_MAX]; /* the ring of Tx descriptors */
u8 tx_data[TX_DESC_MAX][TXBUFFER_SIZE]; /* buffers for data to transmit */
int tx_desc_ptr; /* hanyadik descriptornal tartunk a beirassal */
/* ahol ez all, oda irtunk utoljara */
rx_desc_t rx_desc[RX_DESC_MAX]; /* the ring of Rx descriptors */
u8 rx_data[RX_DESC_MAX][RXBUFFER_SIZE]; /* buffers for received data */
int rx_desc_ptr; /* hanyadik descriptornal tartunk az olvasassal */
int rafutott;
};
static u32 reg, reg_ertek; /* why static: don't write stack trash into regs if strtoul() fails */
static u32 lbireg;
static u8 lbireg_ertek; /* why static: don't write stack trash into regs if strtoul() fails */
static munich_board_t slicecom_boards[MAX_BOARDS];
static munich_board_t pcicom_boards[MAX_BOARDS];
/*
* Reprogram Idle Channel Registers in the FALC - send special code in not used channels
* Should be called from the open and close, when the timeslot assignment changes
*/
void rework_idle_channels(struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
munich_board_t *board = slicecom_boards + hw->boardnum;
munich_ccb_t *ccb = board->ccb;
u8 *lbi = board->lbi;
int i, j, tmp;
spin_lock_irqsave(&mister_lock, flags);
for (i = 0; i < 4; i++)
{
tmp = 0xFF;
for (j = 0; j < 8; j++)
if (ccb->timeslot_spec[8 * i + j].tti == 0) tmp ^= (0x80 >> j);
writeb(tmp, lbi + 0x30 + i);
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* Set PCM framing - /proc/comx/comx0/framing
*/
void slicecom_set_framing(int boardnum, int value)
{
u8 *lbi = slicecom_boards[boardnum].lbi;
spin_lock_irqsave(&mister_lock, flags);
slicecom_boards[boardnum].framing = value;
switch (value)
{
case SLICECOM_FRAMING_CRC4:
writeb(readb(lbi + FMR1) | 8, lbi + FMR1);
writeb((readb(lbi + FMR2) & 0x3f) | 0x80, lbi + FMR2);
break;
case SLICECOM_FRAMING_NO_CRC4:
writeb(readb(lbi + FMR1) & 0xf7, lbi + FMR1);
writeb(readb(lbi + FMR2) & 0x3f, lbi + FMR2);
break;
default:
printk("slicecom: board %d: unhandled " FILENAME_FRAMING
" value %d\n", boardnum, value);
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* Set PCM linecode - /proc/comx/comx0/linecode
*/
void slicecom_set_linecode(int boardnum, int value)
{
u8 *lbi = slicecom_boards[boardnum].lbi;
spin_lock_irqsave(&mister_lock, flags);
slicecom_boards[boardnum].linecode = value;
switch (value)
{
case SLICECOM_LINECODE_HDB3:
writeb(readb(lbi + FMR0) | 0xf0, lbi + FMR0);
break;
case SLICECOM_LINECODE_AMI:
writeb((readb(lbi + FMR0) & 0x0f) | 0xa0, lbi + FMR0);
break;
default:
printk("slicecom: board %d: unhandled " FILENAME_LINECODE
" value %d\n", boardnum, value);
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* Set PCM clock source - /proc/comx/comx0/clock_source
*/
void slicecom_set_clock_source(int boardnum, int value)
{
u8 *lbi = slicecom_boards[boardnum].lbi;
spin_lock_irqsave(&mister_lock, flags);
slicecom_boards[boardnum].clock_source = value;
switch (value)
{
case SLICECOM_CLOCK_SOURCE_LINE:
writeb(readb(lbi + LIM0) & ~1, lbi + LIM0);
break;
case SLICECOM_CLOCK_SOURCE_INTERNAL:
writeb(readb(lbi + LIM0) | 1, lbi + LIM0);
break;
default:
printk("slicecom: board %d: unhandled " FILENAME_CLOCK_SOURCE
" value %d\n", boardnum, value);
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* Set loopbacks - /proc/comx/comx0/loopback
*/
void slicecom_set_loopback(int boardnum, int value)
{
u8 *lbi = slicecom_boards[boardnum].lbi;
spin_lock_irqsave(&mister_lock, flags);
slicecom_boards[boardnum].loopback = value;
switch (value)
{
case SLICECOM_LOOPBACK_NONE:
writeb(readb(lbi + LIM0) & ~2, lbi + LIM0); /* Local Loop OFF */
writeb(readb(lbi + LIM1) & ~2, lbi + LIM1); /* Remote Loop OFF */
break;
case SLICECOM_LOOPBACK_LOCAL:
writeb(readb(lbi + LIM1) & ~2, lbi + LIM1); /* Remote Loop OFF */
writeb(readb(lbi + LIM0) | 2, lbi + LIM0); /* Local Loop ON */
break;
case SLICECOM_LOOPBACK_REMOTE:
writeb(readb(lbi + LIM0) & ~2, lbi + LIM0); /* Local Loop OFF */
writeb(readb(lbi + LIM1) | 2, lbi + LIM1); /* Remote Loop ON */
break;
default:
printk("slicecom: board %d: unhandled " FILENAME_LOOPBACK
" value %d\n", boardnum, value);
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* Update E1 line status LEDs on the adapter
*/
void slicecom_update_leds(munich_board_t * board)
{
u32 *bar1 = board->bar1;
u8 *lbi = board->lbi;
u8 frs0;
u32 leds;
int i;
spin_lock_irqsave(&mister_lock, flags);
leds = 0;
frs0 = readb(lbi + FRS0); /* FRS0 bits described on page 137 */
if (!(frs0 & 0xa0))
{
leds |= 0x2000; /* Green LED: Input signal seems to be OK, no LOS, no LFA */
if (frs0 & 0x10)
leds |= 0x8000; /* Red LED: Receiving Remote Alarm */
}
writel(leds, MUNICH_VIRT(GPDATA));
if (leds == 0x2000 && !board->lineup)
{ /* line up */
board->lineup = 1;
for (i = 0; i < 32; i++)
{
if (board->twins[i] && (board->twins[i]->flags & IFF_RUNNING))
{
struct comx_channel *ch = board->twins[i]->priv;
if (!test_and_set_bit(0, &ch->lineup_pending))
{
ch->lineup_timer.function = comx_lineup_func;
ch->lineup_timer.data = (unsigned long)board->twins[i];
ch->lineup_timer.expires = jiffies + HZ * ch->lineup_delay;
add_timer(&ch->lineup_timer);
}
}
}
}
else if (leds != 0x2000 && board->lineup)
{ /* line down */
board->lineup = 0;
for (i = 0; i < 32; i++)
if (board->twins[i] && (board->twins[i]->flags & IFF_RUNNING))
{
struct comx_channel *ch = board->twins[i]->priv;
if (test_and_clear_bit(0, &ch->lineup_pending))
del_timer(&ch->lineup_timer);
else if (ch->line_status & LINE_UP)
{
ch->line_status &= ~LINE_UP;
if (ch->LINE_status)
ch->LINE_status(board->twins[i], ch->line_status);
}
}
}
spin_unlock_irqrestore(&mister_lock, flags);
}
/*
* This function gets called every second when the FALC issues the interrupt.
* Hardware counters contain error counts for last 1-second time interval.
* We add them to the global counters here.
* Read rfc2495 to understand this.
*/
void slicecom_update_line_counters(munich_board_t * board)
{
e1_stats_t *curr_int = &board->intervals[board->current_interval];
u8 *lbi = board->lbi;
unsigned framing_errors, code_violations, path_code_violations, crc4_errors,
e_bit_errors;
unsigned slip_detected, /* this one has logical value, not the number of slips! */
out_of_frame_defect, /* logical value */
ais_defect, /* logical value */
errored_sec, bursty_err_sec, severely_err_sec = 0, failure_sec;
u8 isr2, isr3, isr5, frs0;
spin_lock_irqsave(&mister_lock, flags);
isr2 = readb(lbi + ISR2); /* ISR0-5 described on page 156 */
isr3 = readb(lbi + ISR3);
isr5 = readb(lbi + ISR5);
frs0 = readb(lbi + FRS0); /* FRS0 described on page 137 */
/* Error Events: */
code_violations = readb(lbi + CVCL) + (readb(lbi + CVCH) << 8);
framing_errors = readb(lbi + FECL) + (readb(lbi + FECH) << 8);
crc4_errors = readb(lbi + CEC1L) + (readb(lbi + CEC1H) << 8);
e_bit_errors = readb(lbi + EBCL) + (readb(lbi + EBCH) << 8);
slip_detected = isr3 & (ISR3_RSN | ISR3_RSP);
path_code_violations = framing_errors + crc4_errors;
curr_int->line_code_violations += code_violations;
curr_int->path_code_violations += path_code_violations;
curr_int->e_bit_errors += e_bit_errors;
/* Performance Defects: */
/* there was an LFA in the last second, but maybe disappeared: */
out_of_frame_defect = (isr2 & ISR2_LFA) || (frs0 & FRS0_LFA);
/* there was an AIS in the last second, but maybe disappeared: */
ais_defect = (isr2 & ISR2_AIS) || (frs0 & FRS0_AIS);
/* Performance Parameters: */
if (out_of_frame_defect)
curr_int->fr_loss_secs++;
if (code_violations)
curr_int->line_err_secs++;
errored_sec = ((board->framing == SLICECOM_FRAMING_NO_CRC4) &&
(code_violations)) || path_code_violations ||
out_of_frame_defect || slip_detected || ais_defect;
bursty_err_sec = !out_of_frame_defect && !ais_defect &&
(path_code_violations > 1) && (path_code_violations < 320);
switch (board->framing)
{
case SLICECOM_FRAMING_CRC4:
severely_err_sec = out_of_frame_defect ||
(path_code_violations >= 832);
break;
case SLICECOM_FRAMING_NO_CRC4:
severely_err_sec = (code_violations >= 2048);
break;
}
/*
* failure_sec: true if there was a condition leading to a failure
* (and leading to unavailable state) in this second:
*/
failure_sec = (isr2 & ISR2_RA) || (frs0 & FRS0_RRA) /* Remote/Far End/Distant Alarm Failure */
|| ais_defect || out_of_frame_defect /* AIS or LOF Failure */
|| (isr2 & ISR2_LOS) || (frs0 & FRS0_LOS) /* Loss Of Signal Failure */
|| (board->loopback != SLICECOM_LOOPBACK_NONE); /* Loopback has been set */
if (board->is_unavailable)
{
if (severely_err_sec)
board->no_ses_seconds = 0;
else
board->no_ses_seconds++;
if ((board->no_ses_seconds >= 10) && !failure_sec)
{
board->is_unavailable = 0;
board->ses_seconds = 0;
board->no_ses_seconds = 0;
}
}
else
{
if (severely_err_sec)
board->ses_seconds++;
else
board->ses_seconds = 0;
if ((board->ses_seconds >= 10) || failure_sec)
{
board->is_unavailable = 1;
board->ses_seconds = 0;
board->no_ses_seconds = 0;
}
}
if (board->is_unavailable)
curr_int->unavail_secs++;
else
{
if (slip_detected)
curr_int->slip_secs++;
curr_int->errored_secs += errored_sec;
curr_int->bursty_err_secs += bursty_err_sec;
curr_int->severely_err_secs += severely_err_sec;
}
/* the RFC does not say clearly which errors to count here, we try to count bit errors */
if (!board->is_unavailable && !severely_err_sec)
{
board->deg_cumulated_errors += code_violations;
board->deg_elapsed_seconds++;
if (board->deg_elapsed_seconds >= 60)
{
if (board->deg_cumulated_errors >= 123)
curr_int->degraded_mins++;
board->deg_cumulated_errors = 0;
board->deg_elapsed_seconds = 0;
}
}
board->elapsed_seconds++;
if (board->elapsed_seconds >= 900)
{
board->current_interval =
(board->current_interval + 1) % SLICECOM_BOARD_INTERVALS_SIZE;
memset((void *)&board->intervals[board->current_interval], 0,
sizeof(e1_stats_t));
board->elapsed_seconds = 0;
}
spin_unlock_irqrestore(&mister_lock, flags);
}
static void pcicom_modemline(unsigned long b)
{
munich_board_t *board = (munich_board_t *) b;
struct net_device *dev = board->twins[0];
struct comx_channel *ch = dev->priv;
unsigned long regs;
regs = readl((void *)(&board->bar1[GPDATA]));
if ((ch->line_status & LINE_UP) && (regs & 0x0800))
{
ch->line_status &= ~LINE_UP;
board->lineup = 0;
if (ch->LINE_status)
{
ch->LINE_status(dev, ch->line_status);
}
}
if (!(ch->line_status & LINE_UP) && !(regs & 0x0800))
{
ch->line_status |= LINE_UP;
board->lineup = 1;
if (ch->LINE_status)
{
ch->LINE_status(dev, ch->line_status);
}
}
mod_timer((struct timer_list *)&board->modemline_timer, jiffies + HZ);
}
/*
* Is it possible to transmit ?
* Called (may be called) by the protocol layer
*/
static int MUNICH_txe(struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
return (hw->busy < TX_DESC_MAX - 1);
}
/*
* Hw probe function. Detects all the boards in the system,
* and fills up slicecom_boards[] and pcicom_boards[]
* Returns 0 on success.
* We do not disable interrupts!
*/
static int munich_probe(void)
{
struct pci_dev *pci;
int boardnum;
int slicecom_boardnum;
int pcicom_boardnum;
u32 *bar1;
u8 *lbi;
munich_board_t *board;
for (boardnum = 0; boardnum < MAX_BOARDS; boardnum++)
{
pcicom_boards[boardnum].pci = 0;
pcicom_boards[boardnum].bar1 = 0;
pcicom_boards[boardnum].lbi = 0;
slicecom_boards[boardnum].pci = 0;
slicecom_boards[boardnum].bar1 = 0;
slicecom_boards[boardnum].lbi = 0;
}
pci = NULL;
board = NULL;
slicecom_boardnum = 0;
pcicom_boardnum = 0;
for (boardnum = 0;
boardnum < MAX_BOARDS && (pci = pci_find_device(PCI_VENDOR_ID_SIEMENS,
PCI_DEVICE_ID_SIEMENS_MUNICH32X, pci)); boardnum++)
{
if (pci_enable_device(pci))
continue;
printk("munich_probe: munich chip found, IRQ %d\n", pci->irq);
#if (LINUX_VERSION_CODE < 0x02030d)
bar1 = ioremap_nocache(pci->base_address[0], 0x100);
lbi = ioremap_nocache(pci->base_address[1], 0x100);
#else
bar1 = ioremap_nocache(pci->resource[0].start, 0x100);
lbi = ioremap_nocache(pci->resource[1].start, 0x100);
#endif
if (bar1 && lbi)
{
pci_write_config_dword(pci, MUNICH_PCI_PCIRES, 0xe0000);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
pci_write_config_dword(pci, MUNICH_PCI_PCIRES, 0);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
/* check the type of the card */
writel(LREG0_MAGIC, MUNICH_VIRT(LREG0));
writel(LREG1_MAGIC, MUNICH_VIRT(LREG1));
writel(LREG2_MAGIC, MUNICH_VIRT(LREG2));
writel(LREG3_MAGIC, MUNICH_VIRT(LREG3));
writel(LREG4_MAGIC, MUNICH_VIRT(LREG4));
writel(LREG5_MAGIC, MUNICH_VIRT(LREG5));
writel(LCONF_MAGIC2,MUNICH_VIRT(LCONF)); /* enable the DMSM */
if ((readb(lbi + VSTR) == 0x13) || (readb(lbi + VSTR) == 0x10))
{
board = slicecom_boards + slicecom_boardnum;
sprintf((char *)board->devname, "slicecom%d",
slicecom_boardnum);
board->isx21 = 0;
slicecom_boardnum++;
}
else if ((readb(lbi + VSTR) == 0x6) || (readb(lbi + GIS) == 0x6))
{
board = pcicom_boards + pcicom_boardnum;
sprintf((char *)board->devname, "pcicom%d", pcicom_boardnum);
board->isx21 = 1;
pcicom_boardnum++;
}
if (board)
{
printk("munich_probe: %s board found\n", board->devname);
writel(LCONF_MAGIC1, MUNICH_VIRT(LCONF)); /* reset the DMSM */
board->pci = pci;
board->bar1 = bar1;
board->lbi = lbi;
board->framing = SLICECOM_FRAMING_DEFAULT;
board->linecode = SLICECOM_LINECODE_DEFAULT;
board->clock_source = SLICECOM_CLOCK_SOURCE_DEFAULT;
board->loopback = SLICECOM_LOOPBACK_DEFAULT;
SET_MODULE_OWNER(board);
}
else
{
printk("munich_probe: Board error, VSTR: %02X\n",
readb(lbi + VSTR));
iounmap((void *)bar1);
iounmap((void *)lbi);
}
}
else
{
printk("munich_probe: ioremap() failed, not enabling this board!\n");
/* .pci = NULL, so the MUNICH_open will not try to open it */
if (bar1) iounmap((void *)bar1);
if (lbi) iounmap((void *)lbi);
}
}
if (!pci && !boardnum)
{
printk("munich_probe: no PCI present!\n");
return -ENODEV;
}
if (pcicom_boardnum + slicecom_boardnum == 0)
{
printk
("munich_probe: Couldn't find any munich board: vendor:device %x:%x not found\n",
PCI_VENDOR_ID_SIEMENS, PCI_DEVICE_ID_SIEMENS_MUNICH32X);
return -ENODEV;
}
/* Found some */
if (pcicom_boardnum)
printk("%d pcicom board(s) found.\n", pcicom_boardnum);
if (slicecom_boardnum)
printk("%d slicecom board(s) found.\n", slicecom_boardnum);
return 0;
}
/*
* Reset the hardware. Get called only from within this module if needed.
*/
#if 0
static int slicecom_reset(struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
printk("slicecom_reset: resetting the hardware\n");
/* Begin to reset the hardware */
if (ch->HW_set_clock)
ch->HW_set_clock(dev);
/* And finish it */
return 0;
}
#endif
/*
* Transmit a packet.
* Called by the protocol layer
* Return values:
* FRAME_ACCEPTED: frame is being transmited, transmitter is busy
* FRAME_QUEUED: frame is being transmitted, there's more room in
* the transmitter for additional packet(s)
* FRAME_ERROR:
* FRAME_DROPPED: there was some error
*/
static int MUNICH_send_packet(struct net_device *dev, struct sk_buff *skb)
{
struct comx_channel *ch = (struct comx_channel *)dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
/* Send it to the debug facility too if needed: */
if (ch->debug_flags & DEBUG_HW_TX)
comx_debug_bytes(dev, skb->data, skb->len, "MUNICH_send_packet");
/* If the line is inactive, don't accept: */
/* TODO: atgondolni hogy mi is legyen itt */
/* if (!(ch->line_status & LINE_UP)) return FRAME_DROPPED; */
/* More check, to be sure: */
if (skb->len > TXBUFFER_SIZE)
{
ch->stats.tx_errors++;
kfree_skb(skb);
return FRAME_ERROR;
}
/* Maybe you have to disable irq's while programming the hw: */
spin_lock_irqsave(&mister_lock, flags);
/* And more check: */
if (hw->busy >= TX_DESC_MAX - 1)
{
printk(KERN_ERR
"%s: Transmitter called while busy... dropping frame, busy = %d\n",
dev->name, hw->busy);
spin_unlock_irqrestore(&mister_lock, flags);
kfree_skb(skb);
return FRAME_DROPPED;
}
if (hw->busy >= 0)
hw->tx_ring_hist[hw->busy]++;
/* DELL: */
else
printk("slicecom: %s: FATAL: busy = %d\n", dev->name, hw->busy);
// /* DEL: */
// printk("slicecom: %s: _send_packet called, busy = %d\n", dev->name, hw->busy );
/* Packet can go, update stats: */
ch->stats.tx_packets++;
ch->stats.tx_bytes += skb->len;
/* Pass the packet to the HW: */
/* Step forward with the transmit descriptors: */
hw->tx_desc_ptr = (hw->tx_desc_ptr + 1) % TX_DESC_MAX;
memcpy(&(hw->tx_data[hw->tx_desc_ptr][0]), skb->data, skb->len);
hw->tx_desc[hw->tx_desc_ptr].no = skb->len;
/* We don't issue any command, just step with the HOLD bit */
hw->tx_desc[hw->tx_desc_ptr].hold = 1;
hw->tx_desc[(hw->tx_desc_ptr + TX_DESC_MAX - 1) % TX_DESC_MAX].hold = 0;
#ifdef COMX_NEW
dev_kfree_skb(skb);
#endif
/* csomag kerult a Tx ringbe: */
hw->busy++;
/* Report it: */
if (ch->debug_flags & DEBUG_HW_TX)
comx_debug(dev, "%s: MUNICH_send_packet was successful\n\n", dev->name);
if (hw->busy >= TX_DESC_MAX - 1)
{
spin_unlock_irqrestore(&mister_lock, flags);
return FRAME_ACCEPTED;
}
spin_unlock_irqrestore(&mister_lock, flags);
/* All done */
return FRAME_QUEUED;
}
/*
* Interrupt handler routine.
* Called by the Linux kernel.
* BEWARE! The interrupts are enabled on the call!
*/
static void MUNICH_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct sk_buff *skb;
int length;
int rx_status;
int work; /* hany esemenyt kezeltem mar le */
u32 *bar1;
u8 *lbi;
u32 stat, /* az esemenyek, amiket a ebben a loop korben le kell meg kezelni */
race_stat = 0, /* race eseten ebben uzenek magamnak hogy mit kell meg lekezelni */
ack; /* ezt fogom a vegen a STAT-ba irni, kiveszek belole 1-1 bitet ha */
/* az adott dolgot nem kell ack-olni mert volt vele munkam, es */
/* legjobb ha visszaterek ide megegyszer */
munich_intq_t int_info;
struct net_device *dev;
struct comx_channel *ch;
struct slicecom_privdata *hw;
munich_board_t *board = (munich_board_t *) dev_id;
int channel;
// , boardnum = (int)dev_id;
// board = munich_boards + boardnum;
bar1 = board->bar1;
lbi = board->lbi;
// Do not uncomment this under heavy load! :->
// printk("MUNICH_interrupt: masked STAT=0x%08x, tiq=0x%08x, riq=0x%08x, piq=0x%08x\n", stat, board->tiq[0].all, board->riq[0].all, board->piq[0].all );
for (work = 0; (stat = (race_stat | (readl(MUNICH_VIRT(STAT)) & ~STAT_NOT_HANDLED_BY_INTERRUPT))) && (work < MAX_WORK - 1); work++)
{
ack = stat & (STAT_PRI | STAT_PTI | STAT_LBII);
/* Handle the interrupt information in the Rx queue. We don't really trust */
/* info from this queue, because it can be overflowed, so later check */
/* every Rx ring for received packets. But there are some errors which can't */
/* be counted from the Rx rings, so we parse it. */
int_info = board->riq[board->riq_ptr];
if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
{
ack &= ~STAT_PRI; /* don't ack the interrupt, we had some work to do */
channel = PCM_INT_CHANNEL(int_info.all);
dev = board->twins[channel];
if (dev == NULL)
{
printk
("MUNICH_interrupt: got an Rx interrupt info for NULL device "
"%s.twins[%d], int_info = 0x%08x\n", board->devname,
channel, int_info.all);
goto go_for_next_interrupt;
}
ch = (struct comx_channel *)dev->priv;
hw = (struct slicecom_privdata *)ch->HW_privdata;
// printk("Rx STAT=0x%08x int_info=0x%08x rx_desc_ptr=%d rx_desc.status=0x%01x\n",
// stat, int_info.all, hw->rx_desc_ptr, hw->rx_desc[ hw->rx_desc_ptr ].status );
if (int_info.all & PCM_INT_HI)
printk("SliceCOM: %s: Host Initiated interrupt\n", dev->name);
if (int_info.all & PCM_INT_IFC)
printk("SliceCOM: %s: Idle/Flag Change\n", dev->name);
/* TOD: jo ez az Idle/Flag Change valamire? - azonnal latszik belole hogy mikor ad a masik oldal */
/* TOD: ilyen IT most nem is jon, mert ki van maszkolva az interrupt, biztosan kell ez? */
if (int_info.all & PCM_INT_FO)
/* Internal buffer (RB) overrun */
ch->stats.rx_over_errors++; /* TOD: Ez azt jelenti hogy a belso RB nem volt hozzaferheto, es ezert kihagyott valamit. De nem csak csomag lehetett, hanem esemeny, stb. is. lasd page 247. Ezzel a 'cat status'-hoz igazodok, de a netdevice.h szerint nem egyertelmu hogy ide ez kellene. Nem lehet hogy rx_missed ? */
/* DE: nem gotozok sehova, elvileg jo igy */
/* kesobb meg visszaterek az FO-ra, ha packet-FO volt. Keresd a "packet-FO"-t. */
if (int_info.all & PCM_INT_FI) /* frame received, but we do not trust the int_info queue */
if (int_info.all & PCM_INT_SF)
{ /* Short Frame: rovidebb mint a CRC */
/* "rovidebb mint CRC+2byte" vizsgalat a "CRC+2"-nel */
ch->stats.rx_length_errors++; /* TOD: noveljem? ne noveljem? */
goto go_for_next_interrupt;
}
go_for_next_interrupt: /* One step in the interrupt queue */
board->riq[board->riq_ptr].all = 0; /* megjelolom hogy itt meg nem jart a hw */
board->riq_ptr = (board->riq_ptr + 1) % MUNICH_INTQMAX;
}
/* Check every Rx ring for incomed packets: */
for (channel = 0; channel < 32; channel++)
{
dev = board->twins[channel];
if (dev != NULL)
{
ch = (struct comx_channel *)dev->priv;
hw = (struct slicecom_privdata *)ch->HW_privdata;
rx_status = hw->rx_desc[hw->rx_desc_ptr].status;
if (!(rx_status & 0x80)) /* mar jart itt a hardver */
{
ack &= ~STAT_PRI; /* Don't ack, we had some work */
/* Ez most egy kicsit zuros, mert itt mar nem latom az int_infot */
if (rx_status & RX_STATUS_ROF)
ch->stats.rx_over_errors++; /* TOD: 'cat status'-hoz igazodok */
if (rx_status & RX_STATUS_RA)
/* Abort received or issued on channel */
ch->stats.rx_frame_errors++; /* or HOLD bit in the descriptor */
/* TOD: 'cat status'-hoz igazodok */
if (rx_status & RX_STATUS_LFD)
{ /* Long Frame (longer then MFL in the MODE1) */
ch->stats.rx_length_errors++;
goto go_for_next_frame;
}
if (rx_status & RX_STATUS_NOB)
{ /* Not n*8 bits long frame - frame alignment */
ch->stats.rx_frame_errors++; /* ez viszont nem igazodik a 'cat status'-hoz */
goto go_for_next_frame;
}
if (rx_status & RX_STATUS_CRCO)
{ /* CRC error */
ch->stats.rx_crc_errors++;
goto go_for_next_frame;
}
if (rx_status & RX_STATUS_SF)
{ /* Short Frame: rovidebb mint CRC+2byte */
ch->stats.rx_errors++; /* The HW does not set PCI_INT_ERR bit for this one, see page 246 */
ch->stats.rx_length_errors++;
goto go_for_next_frame;
}
if (rx_status != 0)
{
printk("SliceCOM: %s: unhandled rx_status: 0x%02x\n",
dev->name, rx_status);
goto go_for_next_frame;
}
/* frame received without errors: */
length = hw->rx_desc[hw->rx_desc_ptr].bno;
ch->stats.rx_packets++; /* Count only 'good' packets */
ch->stats.rx_bytes += length;
/* Allocate a larger skb and reserve the heading for efficiency: */
if ((skb = dev_alloc_skb(length + 16)) == NULL)
{
ch->stats.rx_dropped++;
goto go_for_next_frame;
}
/* Do bookkeeping: */
skb_reserve(skb, 16);
skb_put(skb, length);
skb->dev = dev;
/* Now copy the data into the buffer: */
memcpy(skb->data, &(hw->rx_data[hw->rx_desc_ptr][0]), length);
/* DEL: UGLY HACK!!!! */
if (*((int *)skb->data) == 0x02000000 &&
*(((int *)skb->data) + 1) == 0x3580008f)
{
printk("%s: swapping hack\n", dev->name);
*((int *)skb->data) = 0x3580008f;
*(((int *)skb->data) + 1) = 0x02000000;
}
if (ch->debug_flags & DEBUG_HW_RX)
comx_debug_skb(dev, skb, "MUNICH_interrupt receiving");
/* Pass it to the protocol entity: */
ch->LINE_rx(dev, skb);
go_for_next_frame:
/* DEL: rafutott-e a HOLD bitre -detektalas */
{
if( ((rx_desc_t*)phys_to_virt(board->ccb->current_rx_desc[channel]))->hold
&& ((rx_desc_t*)phys_to_virt(board->ccb->current_rx_desc[channel]))->status != 0xff)
hw->rafutott++; /* rafutott: hanyszor volt olyan hogy a current descriptoron HOLD bit volt, es a hw mar befejezte az irast (azaz a hw rafutott a HOLD bitre) */
}
// if( jiffies % 2 ) /* DELL: okozzunk egy kis Rx ring slipet :) */
// {
/* Step forward with the receive descriptors: */
/* if you change this, change the copy of it below too! Search for: "RxSlip" */
hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 1) % RX_DESC_MAX].hold = 1;
hw->rx_desc[hw->rx_desc_ptr].status = 0xFF; /* megjelolom hogy itt meg nem jart a hw */
hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 2) % RX_DESC_MAX].hold = 0;
hw->rx_desc_ptr = (hw->rx_desc_ptr + 1) % RX_DESC_MAX;
// }
}
}
}
stat &= ~STAT_PRI;
// }
// if( stat & STAT_PTI ) /* TOD: primko megvalositas: mindig csak egy esemenyt dolgozok fel, */
/* es nem torlom a STAT-ot, ezert ujra visszajon ide a rendszer. Amikor */
/* jon interrupt, de nincs mit feldolgozni, akkor torlom a STAT-ot. */
/* 'needs a rewrite', de elso megoldasnak jo lesz */
// {
int_info = board->tiq[board->tiq_ptr];
if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
{
ack &= ~STAT_PTI; /* don't ack the interrupt, we had some work to do */
channel = PCM_INT_CHANNEL(int_info.all);
dev = board->twins[channel];
if (dev == NULL)
{
printk("MUNICH_interrupt: got a Tx interrupt for NULL device "
"%s.twins[%d], int_info = 0x%08x\n",
board->isx21 ? "pcicom" : "slicecom", channel, int_info.all);
goto go_for_next_tx_interrupt;
}
ch = (struct comx_channel *)dev->priv;
hw = (struct slicecom_privdata *)ch->HW_privdata;
// printk("Tx STAT=0x%08x int_info=0x%08x tiq_ptr=%d\n", stat, int_info.all, board->tiq_ptr );
if (int_info.all & PCM_INT_FE2)
{ /* "Tx available" */
/* do nothing */
}
else if (int_info.all & PCM_INT_FO)
{ /* Internal buffer (RB) overrun */
ch->stats.rx_over_errors++;
}
else
{
printk("slicecom: %s: unhandled Tx int_info: 0x%08x\n",
dev->name, int_info.all);
}
go_for_next_tx_interrupt:
board->tiq[board->tiq_ptr].all = 0;
board->tiq_ptr = (board->tiq_ptr + 1) % MUNICH_INTQMAX;
}
/* Check every Tx ring for incoming packets: */
for (channel = 0; channel < 32; channel++)
{
dev = board->twins[channel];
if (dev != NULL)
{
int newbusy;
ch = (struct comx_channel *)dev->priv;
hw = (struct slicecom_privdata *)ch->HW_privdata;
/* We dont trust the "Tx available" info from the TIQ, but check */
/* every ring if there is some free room */
if (ch->init_status && netif_running(dev))
{
newbusy = ( TX_DESC_MAX + (& hw->tx_desc[ hw->tx_desc_ptr ]) -
(tx_desc_t*)phys_to_virt(board->ccb->current_tx_desc[ hw->channel ]) ) % TX_DESC_MAX;
if(newbusy < 0)
{
printk("slicecom: %s: FATAL: fresly computed busy = %d, HW: 0x%p, SW: 0x%p\n",
dev->name, newbusy,
phys_to_virt(board->ccb->current_tx_desc[hw->channel]),
& hw->tx_desc[hw->tx_desc_ptr]);
}
/* Fogyott valami a Tx ringbol? */
if (newbusy < hw->busy)
{
// ack &= ~STAT_PTI; /* Don't ack, we had some work */
hw->busy = newbusy;
if (ch->LINE_tx)
ch->LINE_tx(dev); /* Report it to protocol driver */
}
else if (newbusy > hw->busy)
printk("slicecom: %s: newbusy > hw->busy, this should not happen!\n", dev->name);
}
}
}
stat &= ~STAT_PTI;
int_info = board->piq[board->piq_ptr];
if (int_info.all & 0xF0000000) /* ha ez nem 0, akkor itt interrupt_info van */
{
ack &= ~STAT_LBII; /* don't ack the interrupt, we had some work to do */
/* We do not really use (yet) the interrupt info from this queue, */
// printk("slicecom: %s: LBI Interrupt event: %08x\n", board->devname, int_info.all);
if (!board->isx21)
{
slicecom_update_leds(board);
slicecom_update_line_counters(board);
}
goto go_for_next_lbi_interrupt; /* To avoid warning about unused label */
go_for_next_lbi_interrupt: /* One step in the interrupt queue */
board->piq[board->piq_ptr].all = 0; /* megjelolom hogy itt meg nem jart a hw */
board->piq_ptr = (board->piq_ptr + 1) % MUNICH_PIQMAX;
}
stat &= ~STAT_LBII;
writel(ack, MUNICH_VIRT(STAT));
if (stat & STAT_TSPA)
{
// printk("slicecom: %s: PCM TSP Asynchronous\n", board->devname);
writel(STAT_TSPA, MUNICH_VIRT(STAT));
stat &= ~STAT_TSPA;
}
if (stat & STAT_RSPA)
{
// printk("slicecom: %s: PCM RSP Asynchronous\n", board->devname);
writel(STAT_RSPA, MUNICH_VIRT(STAT));
stat &= ~STAT_RSPA;
}
if (stat)
{
printk("MUNICH_interrupt: unhandled interrupt, STAT=0x%08x\n",
stat);
writel(stat, MUNICH_VIRT(STAT)); /* ha valamit megsem kezeltunk le, azert ack-ot kuldunk neki */
}
}
board->histogram[work]++;
/* We can miss these if we reach the MAX_WORK */
/* Count it to see how often it happens */
if (race_stat & STAT_PRI)
board->stat_pri_races_missed++;
if (race_stat & STAT_PTI)
board->stat_pti_races_missed++;
return;
}
/*
* Hardware open routine.
* Called by comx (upper) layer when the user wants to bring up the interface
* with ifconfig.
* Initializes hardware, allocates resources etc.
* Returns 0 on OK, or standard error value on error.
*/
static int MUNICH_open(struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
struct proc_dir_entry *procfile = ch->procdir->subdir;
munich_board_t *board;
munich_ccb_t *ccb;
u32 *bar1;
u8 *lbi;
u32 stat;
unsigned long flags, jiffs;
int i, channel;
u32 timeslots = hw->timeslots;
board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
bar1 = board->bar1;
lbi = board->lbi;
/* TODO: a timeslotok ellenorzese kell majd ide .. hat, biztos? mar a write_proc-ban is
ellenorzom valamennyire.
if (!dev->io || !dev->irq) return -ENODEV;
*/
if (!board->pci)
{
printk("MUNICH_open: no %s board with boardnum = %d\n",
ch->hardware->name, hw->boardnum);
return -ENODEV;
}
spin_lock_irqsave(&mister_lock, flags);
/* lock the section to avoid race with multiple opens and make sure
that no interrupts get called while this lock is active */
if (board->use_count == 0) /* bring up the board if it was unused */
/* if fails, frees allocated resources and returns. */
/* TOD: is it safe? nem kellene resetelni a kartyat? */
{
printk("MUNICH_open: %s: bringing up board\n", board->devname);
/* Clean up the board's static struct if messed: */
for (i = 0; i < 32; i++)
board->twins[i] = NULL;
for (i = 0; i < MAX_WORK; i++)
board->histogram[i] = 0;
board->lineup = 0;
/* Allocate CCB: */
board->ccb = kmalloc(sizeof(munich_ccb_t), GFP_KERNEL);
if (board->ccb == NULL)
{
spin_unlock_irqrestore(&mister_lock, flags);
return -ENOMEM;
}
memset((void *)board->ccb, 0, sizeof(munich_ccb_t));
board->ccb->csa = virt_to_phys(board->ccb);
ccb = board->ccb;
for (i = 0; i < 32; i++)
{
ccb->timeslot_spec[i].tti = 1;
ccb->timeslot_spec[i].rti = 1;
}
/* Interrupt queues: */
board->tiq = kmalloc(MUNICH_INTQSIZE, GFP_KERNEL);
if (board->tiq == NULL)
{
spin_unlock_irqrestore(&mister_lock, flags);
return -ENOMEM;
}
memset((void *)board->tiq, 0, MUNICH_INTQSIZE);
board->riq = kmalloc(MUNICH_INTQSIZE, GFP_KERNEL);
if (board->riq == NULL)
{
spin_unlock_irqrestore(&mister_lock, flags);
return -ENOMEM;
}
memset((void *)board->riq, 0, MUNICH_INTQSIZE);
board->piq = kmalloc(MUNICH_PIQSIZE, GFP_KERNEL);
if (board->piq == NULL)
{
spin_unlock_irqrestore(&mister_lock, flags);
return -ENOMEM;
}
memset((void *)board->piq, 0, MUNICH_PIQSIZE);
board->tiq_ptr = 0;
board->riq_ptr = 0;
board->piq_ptr = 0;
/* Request irq: */
board->irq = 0;
/* (char*) cast to avoid warning about discarding volatile: */
if (request_irq(board->pci->irq, MUNICH_interrupt, 0,
(char *)board->devname, (void *)board))
{
printk("MUNICH_open: %s: unable to obtain irq %d\n", board->devname,
board->pci->irq);
/* TOD: free other resources (a sok malloc feljebb) */
spin_unlock_irqrestore(&mister_lock, flags);
return -EAGAIN;
}
board->irq = board->pci->irq; /* csak akkor legyen != 0, ha tenyleg le van foglalva nekunk */
/* Programming device: */
/* Reset the board like a power-on: */
/* TOD:
- It is not a real power-on: if a DMA transaction fails with master abort, the board
stays in half-dead state.
- It doesn't reset the FALC line driver */
pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0xe0000);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
writel(virt_to_phys(&ccb->csa), MUNICH_VIRT(CCBA));
writel(virt_to_phys( board->tiq ), MUNICH_VIRT(TIQBA));
writel(MUNICH_INTQLEN, MUNICH_VIRT(TIQL));
writel(virt_to_phys( board->riq ), MUNICH_VIRT(RIQBA));
writel(MUNICH_INTQLEN, MUNICH_VIRT(RIQL));
writel(virt_to_phys( board->piq ), MUNICH_VIRT(PIQBA));
writel(MUNICH_PIQLEN, MUNICH_VIRT(PIQL));
/* Put the magic values into the registers: */
writel(MODE1_MAGIC, MUNICH_VIRT(MODE1));
writel(MODE2_MAGIC, MUNICH_VIRT(MODE2));
writel(LREG0_MAGIC, MUNICH_VIRT(LREG0));
writel(LREG1_MAGIC, MUNICH_VIRT(LREG1));
writel(LREG2_MAGIC, MUNICH_VIRT(LREG2));
writel(LREG3_MAGIC, MUNICH_VIRT(LREG3));
writel(LREG4_MAGIC, MUNICH_VIRT(LREG4));
writel(LREG5_MAGIC, MUNICH_VIRT(LREG5));
writel(LCONF_MAGIC1, MUNICH_VIRT(LCONF)); /* reset the DMSM */
writel(LCONF_MAGIC2, MUNICH_VIRT(LCONF)); /* enable the DMSM */
writel(~0, MUNICH_VIRT(TXPOLL));
writel(board->isx21 ? 0x1400 : 0xa000, MUNICH_VIRT(GPDIR));
if (readl(MUNICH_VIRT(STAT))) writel(readl(MUNICH_VIRT(STAT)), MUNICH_VIRT(STAT));
ccb->action_spec = CCB_ACTIONSPEC_RES | CCB_ACTIONSPEC_IA;
writel(CMD_ARPCM, MUNICH_VIRT(CMD)); /* Start the PCM core reset */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
stat = 0; /* Wait for the action to complete max. 1 second */
jiffs = jiffies;
while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
{
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
if (stat & STAT_PCMF)
{
printk(KERN_ERR
"MUNICH_open: %s: Initial ARPCM failed. STAT=0x%08x\n",
board->devname, stat);
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
free_irq(board->irq, (void *)board); /* TOD: free other resources too *//* maybe shut down hw? */
board->irq = 0;
spin_unlock_irqrestore(&mister_lock, flags);
return -EAGAIN;
}
else if (!(stat & STAT_PCMA))
{
printk(KERN_ERR
"MUNICH_open: %s: Initial ARPCM timeout. STAT=0x%08x\n",
board->devname, stat);
free_irq(board->irq, (void *)board); /* TOD: free other resources too *//* maybe shut off the hw? */
board->irq = 0;
spin_unlock_irqrestore(&mister_lock, flags);
return -EIO;
}
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT)); /* Acknowledge */
if (board->isx21) writel(0, MUNICH_VIRT(GPDATA));
printk("MUNICH_open: %s: succesful HW-open took %ld jiffies\n",
board->devname, jiffies - jiffs);
/* Set up the FALC hanging on the Local Bus: */
if (!board->isx21)
{
writeb(0x0e, lbi + FMR1);
writeb(0, lbi + LIM0);
writeb(0xb0, lbi + LIM1); /* TODO: input threshold */
writeb(0xf7, lbi + XPM0);
writeb(0x02, lbi + XPM1);
writeb(0x00, lbi + XPM2);
writeb(0xf0, lbi + FMR0);
writeb(0x80, lbi + PCD);
writeb(0x80, lbi + PCR);
writeb(0x00, lbi + LIM2);
writeb(0x07, lbi + XC0);
writeb(0x3d, lbi + XC1);
writeb(0x05, lbi + RC0);
writeb(0x00, lbi + RC1);
writeb(0x83, lbi + FMR2);
writeb(0x9f, lbi + XSW);
writeb(0x0f, lbi + XSP);
writeb(0x00, lbi + TSWM);
writeb(0xe0, lbi + MODE);
writeb(0xff, lbi + IDLE); /* Idle Code to send in unused timeslots */
writeb(0x83, lbi + IPC); /* interrupt query line mode: Push/pull output, active high */
writeb(0xbf, lbi + IMR3); /* send an interrupt every second */
slicecom_set_framing(hw->boardnum, board->framing);
slicecom_set_linecode(hw->boardnum, board->linecode);
slicecom_set_clock_source(hw->boardnum, board->clock_source);
slicecom_set_loopback(hw->boardnum, board->loopback);
memset((void *)board->intervals, 0, sizeof(board->intervals));
board->current_interval = 0;
board->elapsed_seconds = 0;
board->ses_seconds = 0;
board->is_unavailable = 0;
board->no_ses_seconds = 0;
board->deg_elapsed_seconds = 0;
board->deg_cumulated_errors = 0;
}
/* Enable the interrupts last */
/* These interrupts will be enabled. We do not need the others. */
writel(readl(MUNICH_VIRT(IMASK)) & ~(STAT_PTI | STAT_PRI | STAT_LBII | STAT_TSPA | STAT_RSPA), MUNICH_VIRT(IMASK));
}
spin_unlock_irqrestore(&mister_lock, flags);
dev->irq = board->irq; /* hogy szep legyen az ifconfig outputja */
ccb = board->ccb; /* TODO: ez igy csunya egy kicsit hogy benn is meg kinn is beletoltom :( */
spin_lock_irqsave(&mister_lock, flags);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
/* Check if the selected timeslots aren't used already */
for (i = 0; i < 32; i++)
if (((1 << i) & timeslots) && !ccb->timeslot_spec[i].tti)
{
printk("MUNICH_open: %s: timeslot %d already used by %s\n",
dev->name, i, board->twins[ccb->timeslot_spec[i].txchannel]->name);
spin_unlock_irqrestore(&mister_lock, flags);
return -EBUSY; /* TODO: lehet hogy valami mas errno kellene? */
}
/* find a free channel: */
/* TODO: ugly, rewrite it */
for (channel = 0; channel <= 32; channel++)
{
if (channel == 32)
{ /* not found a free one */
printk
("MUNICH_open: %s: FATAL: can not find a free channel - this should not happen!\n",
dev->name);
spin_unlock_irqrestore(&mister_lock, flags);
return -ENODEV;
}
if (board->twins[channel] == NULL)
break; /* found the first free one */
}
board->lastcheck = jiffies; /* avoid checking uninitialized hardware channel */
/* Open the channel. If fails, calls MUNICH_close() to properly free resources and stop the HW */
hw->channel = channel;
board->twins[channel] = dev;
board->use_count++; /* meg nem nyitottuk meg a csatornat, de a twins-ben
mar elfoglaltunk egyet, es ha a _close-t akarjuk hivni, akkor ez kell. */
for (i = 0; i < 32; i++)
if ((1 << i) & timeslots)
{
ccb->timeslot_spec[i].tti = 0;
ccb->timeslot_spec[i].txchannel = channel;
ccb->timeslot_spec[i].txfillmask = ~0;
ccb->timeslot_spec[i].rti = 0;
ccb->timeslot_spec[i].rxchannel = channel;
ccb->timeslot_spec[i].rxfillmask = ~0;
}
if (!board->isx21) rework_idle_channels(dev);
memset((void *)&(hw->tx_desc), 0, TX_DESC_MAX * sizeof(tx_desc_t));
memset((void *)&(hw->rx_desc), 0, RX_DESC_MAX * sizeof(rx_desc_t));
for (i = 0; i < TX_DESC_MAX; i++)
{
hw->tx_desc[i].fe = 1;
hw->tx_desc[i].fnum = 2;
hw->tx_desc[i].data = virt_to_phys( & (hw->tx_data[i][0]) );
hw->tx_desc[i].next = virt_to_phys( & (hw->tx_desc[ (i+1) % TX_DESC_MAX ]) );
}
hw->tx_desc_ptr = 0; /* we will send an initial packet so it is correct: "oda irtunk utoljara" */
hw->busy = 0;
hw->tx_desc[hw->tx_desc_ptr].hold = 1;
hw->tx_desc[hw->tx_desc_ptr].no = 1; /* TOD: inkabb csak 0 hosszut kuldjunk ki az initkor? */
for (i = 0; i < RX_DESC_MAX; i++)
{
hw->rx_desc[i].no = RXBUFFER_SIZE;
hw->rx_desc[i].data = virt_to_phys(&(hw->rx_data[i][0]));
hw->rx_desc[i].next = virt_to_phys(&(hw->rx_desc[(i+1) % RX_DESC_MAX]));
hw->rx_desc[i].status = 0xFF;
}
hw->rx_desc_ptr = 0;
hw->rx_desc[(hw->rx_desc_ptr + RX_DESC_MAX - 2) % RX_DESC_MAX].hold = 1;
memset((void *)&ccb->channel_spec[channel], 0, sizeof(channel_spec_t));
ccb->channel_spec[channel].ti = 0; /* Transmit off */
ccb->channel_spec[channel].to = 1;
ccb->channel_spec[channel].ta = 0;
ccb->channel_spec[channel].th = 1; /* Transmit hold */
ccb->channel_spec[channel].ri = 0; /* Receive off */
ccb->channel_spec[channel].ro = 1;
ccb->channel_spec[channel].ra = 0;
ccb->channel_spec[channel].mode = 3; /* HDLC */
ccb->action_spec = CCB_ACTIONSPEC_IN | (channel << 8);
writel(CMD_ARPCM, MUNICH_VIRT(CMD));
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
spin_unlock_irqrestore(&mister_lock, flags);
stat = 0;
jiffs = jiffies;
while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
{
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
if (stat & STAT_PCMF)
{
printk(KERN_ERR "MUNICH_open: %s: %s channel %d off failed\n",
dev->name, board->devname, channel);
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
MUNICH_close(dev);
return -EAGAIN;
}
else if (!(stat & STAT_PCMA))
{
printk(KERN_ERR "MUNICH_open: %s: %s channel %d off timeout\n",
dev->name, board->devname, channel);
MUNICH_close(dev);
return -EIO;
}
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
// printk("MUNICH_open: %s: succesful channel off took %ld jiffies\n", board->devname, jiffies-jiffs);
spin_lock_irqsave(&mister_lock, flags);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
ccb->channel_spec[channel].ifc = 1; /* 1 .. 'Idle/Flag change' interrupt letiltva */
ccb->channel_spec[channel].fit = 1;
ccb->channel_spec[channel].nitbs = 1;
ccb->channel_spec[channel].itbs = 2;
/* TODOO: lehet hogy jo lenne igy, de utana kellene nezni hogy nem okoz-e fragmentaciot */
// ccb->channel_spec[channel].itbs = 2 * number_of_timeslots;
// printk("open: %s: number_of_timeslots: %d\n", dev->name, number_of_timeslots);
ccb->channel_spec[channel].mode = 3; /* HDLC */
ccb->channel_spec[channel].ftda = virt_to_phys(&(hw->tx_desc));
ccb->channel_spec[channel].frda = virt_to_phys(&(hw->rx_desc[0]));
ccb->channel_spec[channel].ti = 1; /* Transmit init */
ccb->channel_spec[channel].to = 0;
ccb->channel_spec[channel].ta = 1;
ccb->channel_spec[channel].th = 0;
ccb->channel_spec[channel].ri = 1; /* Receive init */
ccb->channel_spec[channel].ro = 0;
ccb->channel_spec[channel].ra = 1;
ccb->action_spec = CCB_ACTIONSPEC_ICO | (channel << 8);
writel(CMD_ARPCM, MUNICH_VIRT(CMD)); /* Start the channel init */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
spin_unlock_irqrestore(&mister_lock, flags);
stat = 0; /* Wait for the action to complete max. 1 second */
jiffs = jiffies;
while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
{
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
if (stat & STAT_PCMF)
{
printk(KERN_ERR "MUNICH_open: %s: channel open ARPCM failed\n",
board->devname);
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
MUNICH_close(dev);
return -EAGAIN;
}
else if (!(stat & STAT_PCMA))
{
printk(KERN_ERR "MUNICH_open: %s: channel open ARPCM timeout\n",
board->devname);
MUNICH_close(dev);
return -EIO;
}
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
// printk("MUNICH_open: %s: succesful channel open took %ld jiffies\n", board->devname, jiffies-jiffs);
spin_lock_irqsave(&mister_lock, flags);
ccb->channel_spec[channel].nitbs = 0; /* once ITBS defined, these must be 0 */
ccb->channel_spec[channel].itbs = 0;
if (board->isx21)
{
board->modemline_timer.data = (unsigned long)board;
board->modemline_timer.function = pcicom_modemline;
board->modemline_timer.expires = jiffies + HZ;
add_timer((struct timer_list *)&board->modemline_timer);
}
/* It is done. Declare that we're open: */
hw->busy = 0; /* It may be 1 if the frame at Tx init already ended, but it is not */
/* a real problem: we compute hw->busy on every interrupt */
hw->rafutott = 0;
ch->init_status |= HW_OPEN;
/* Initialize line state: */
if (board->lineup)
ch->line_status |= LINE_UP;
else
ch->line_status &= ~LINE_UP;
/* Remove w attribute from /proc files associated to hw parameters:
no write when the device is open */
for (; procfile; procfile = procfile->next)
if (strcmp(procfile->name, FILENAME_BOARDNUM) == 0 ||
strcmp(procfile->name, FILENAME_TIMESLOTS) == 0)
procfile->mode = S_IFREG | 0444;
spin_unlock_irqrestore(&mister_lock, flags);
return 0;
}
/*
* Hardware close routine.
* Called by comx (upper) layer when the user wants to bring down the interface
* with ifconfig.
* We also call it from MUNICH_open, if the open fails.
* Brings down hardware, frees resources, stops receiver
* Returns 0 on OK, or standard error value on error.
*/
static int MUNICH_close(struct net_device *dev)
{
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
struct proc_dir_entry *procfile = ch->procdir->subdir;
munich_board_t *board;
munich_ccb_t *ccb;
u32 *bar1;
u32 timeslots = hw->timeslots;
int stat, i, channel = hw->channel;
unsigned long jiffs;
board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
ccb = board->ccb;
bar1 = board->bar1;
if (board->isx21)
del_timer((struct timer_list *)&board->modemline_timer);
spin_lock_irqsave(&mister_lock, flags);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
/* Disable receiver for the channel: */
for (i = 0; i < 32; i++)
if ((1 << i) & timeslots)
{
ccb->timeslot_spec[i].tti = 1;
ccb->timeslot_spec[i].txfillmask = 0; /* just to be double-sure :) */
ccb->timeslot_spec[i].rti = 1;
ccb->timeslot_spec[i].rxfillmask = 0;
}
if (!board->isx21) rework_idle_channels(dev);
ccb->channel_spec[channel].ti = 0; /* Receive off, Transmit off */
ccb->channel_spec[channel].to = 1;
ccb->channel_spec[channel].ta = 0;
ccb->channel_spec[channel].th = 1;
ccb->channel_spec[channel].ri = 0;
ccb->channel_spec[channel].ro = 1;
ccb->channel_spec[channel].ra = 0;
board->twins[channel] = NULL;
ccb->action_spec = CCB_ACTIONSPEC_IN | (channel << 8);
writel(CMD_ARPCM, MUNICH_VIRT(CMD));
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
spin_unlock_irqrestore(&mister_lock, flags);
stat = 0;
jiffs = jiffies;
while (!((stat = readl(MUNICH_VIRT(STAT))) & (STAT_PCMA | STAT_PCMF)) && time_before(jiffies, jiffs + HZ))
{
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
if (stat & STAT_PCMF)
{
printk(KERN_ERR
"MUNICH_close: %s: FATAL: channel off ARPCM failed, not closing!\n",
dev->name);
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMF, MUNICH_VIRT(STAT));
/* If we return success, the privdata (and the descriptor list) will be freed */
return -EIO;
}
else if (!(stat & STAT_PCMA))
printk(KERN_ERR "MUNICH_close: %s: channel off ARPCM timeout\n",
board->devname);
writel(readl(MUNICH_VIRT(STAT)) & STAT_PCMA, MUNICH_VIRT(STAT));
// printk("MUNICH_close: %s: channel off took %ld jiffies\n", board->devname, jiffies-jiffs);
spin_lock_irqsave(&mister_lock, flags);
if (board->use_count) board->use_count--;
if (!board->use_count) /* we were the last user of the board */
{
printk("MUNICH_close: bringing down board %s\n", board->devname);
/* program down the board: */
writel(0x0000FF7F, MUNICH_VIRT(IMASK)); /* do not send any interrupts */
writel(0, MUNICH_VIRT(CMD)); /* stop the timer if someone started it */
writel(~0U, MUNICH_VIRT(STAT)); /* if an interrupt came between the cli()-sti(), quiet it */
if (ch->hardware == &pcicomhw)
writel(0x1400, MUNICH_VIRT(GPDATA));
/* Put the board into 'reset' state: */
pci_write_config_dword(board->pci, MUNICH_PCI_PCIRES, 0xe0000);
/* Free irq and other resources: */
if (board->irq)
free_irq(board->irq, (void *)board); /* Ha nem inicializalta magat, akkor meg nincs irq */
board->irq = 0;
/* Free CCB and the interrupt queues */
if (board->ccb) kfree((void *)board->ccb);
if (board->tiq) kfree((void *)board->tiq);
if (board->riq) kfree((void *)board->riq);
if (board->piq) kfree((void *)board->piq);
board->ccb = NULL;
board->tiq = board->riq = board->piq = NULL;
}
/* Enable setting of hw parameters */
for (; procfile; procfile = procfile->next)
if (strcmp(procfile->name, FILENAME_BOARDNUM) == 0 ||
strcmp(procfile->name, FILENAME_TIMESLOTS) == 0)
procfile->mode = S_IFREG | 0644;
/* We're not open anymore */
ch->init_status &= ~HW_OPEN;
spin_unlock_irqrestore(&mister_lock, flags);
return 0;
}
/*
* Give (textual) status information.
* The text it returns will be a part of what appears when the user does a
* cat /proc/comx/comx[n]/status
* Don't write more than PAGESIZE.
* Return value: number of bytes written (length of the string, incl. 0)
*/
static int MUNICH_minden(struct net_device *dev, char *page)
{
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
munich_board_t *board;
struct net_device *devp;
u8 *lbi;
e1_stats_t *curr_int, *prev_int;
e1_stats_t last4, last96; /* sum of last 4, resp. last 96 intervals */
unsigned *sump, /* running pointer for the sum data */
*p; /* running pointer for the interval data */
int len = 0;
u8 frs0, frs1;
u8 fmr2;
int i, j;
u32 timeslots;
board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
lbi = board->lbi;
curr_int = &board->intervals[board->current_interval];
prev_int =
&board->
intervals[(board->current_interval + SLICECOM_BOARD_INTERVALS_SIZE -
1) % SLICECOM_BOARD_INTERVALS_SIZE];
if (!board->isx21)
{
frs0 = readb(lbi + FRS0);
fmr2 = readb(lbi + FMR2);
len += snprintf(page + len, PAGE_SIZE - len, "Controller status:\n");
if (frs0 == 0)
len += snprintf(page + len, PAGE_SIZE - len, "\tNo alarms\n");
else
{
if (frs0 & FRS0_LOS)
len += snprintf(page + len, PAGE_SIZE - len, "\tLoss Of Signal\n");
else
{
if (frs0 & FRS0_AIS)
len += snprintf(page + len, PAGE_SIZE - len,
"\tAlarm Indication Signal\n");
else
{
if (frs0 & FRS0_AUXP)
len += snprintf(page + len, PAGE_SIZE - len,
"\tAuxiliary Pattern Indication\n");
if (frs0 & FRS0_LFA)
len += snprintf(page + len, PAGE_SIZE - len,
"\tLoss of Frame Alignment\n");
else
{
if (frs0 & FRS0_RRA)
len += snprintf(page + len, PAGE_SIZE - len,
"\tReceive Remote Alarm\n");
/* You can't set this framing with the /proc interface, but it */
/* may be good to have here this alarm if you set it by hand: */
if ((board->framing == SLICECOM_FRAMING_CRC4) &&
(frs0 & FRS0_LMFA))
len += snprintf(page + len, PAGE_SIZE - len,
"\tLoss of CRC4 Multiframe Alignment\n");
if (((fmr2 & 0xc0) == 0xc0) && (frs0 & FRS0_NMF))
len += snprintf(page + len, PAGE_SIZE - len,
"\tNo CRC4 Multiframe alignment Found after 400 msec\n");
}
}
}
}
frs1 = readb(lbi + FRS1);
if (FRS1_XLS & frs1)
len += snprintf(page + len, PAGE_SIZE - len,
"\tTransmit Line Short\n");
/* debug Rx ring: DEL: - vagy meghagyni, de akkor legyen kicsit altalanosabb */
}
len += snprintf(page + len, PAGE_SIZE - len, "Rx ring:\n");
len += snprintf(page + len, PAGE_SIZE - len, "\trafutott: %d\n", hw->rafutott);
len += snprintf(page + len, PAGE_SIZE - len,
"\tlastcheck: %ld, jiffies: %ld\n", board->lastcheck, jiffies);
len += snprintf(page + len, PAGE_SIZE - len, "\tbase: %08x\n",
(u32) virt_to_phys(&hw->rx_desc[0]));
len += snprintf(page + len, PAGE_SIZE - len, "\trx_desc_ptr: %d\n",
hw->rx_desc_ptr);
len += snprintf(page + len, PAGE_SIZE - len, "\trx_desc_ptr: %08x\n",
(u32) virt_to_phys(&hw->rx_desc[hw->rx_desc_ptr]));
len += snprintf(page + len, PAGE_SIZE - len, "\thw_curr_ptr: %08x\n",
board->ccb->current_rx_desc[hw->channel]);
for (i = 0; i < RX_DESC_MAX; i++)
len += snprintf(page + len, PAGE_SIZE - len, "\t%08x %08x %08x %08x\n",
*((u32 *) & hw->rx_desc[i] + 0),
*((u32 *) & hw->rx_desc[i] + 1),
*((u32 *) & hw->rx_desc[i] + 2),
*((u32 *) & hw->rx_desc[i] + 3));
if (!board->isx21)
{
len += snprintf(page + len, PAGE_SIZE - len,
"Interfaces using this board: (channel-group, interface, timeslots)\n");
for (i = 0; i < 32; i++)
{
devp = board->twins[i];
if (devp != NULL)
{
timeslots =
((struct slicecom_privdata *)((struct comx_channel *)devp->
priv)->HW_privdata)->
timeslots;
len += snprintf(page + len, PAGE_SIZE - len, "\t%2d %s: ", i,
devp->name);
for (j = 0; j < 32; j++)
if ((1 << j) & timeslots)
len += snprintf(page + len, PAGE_SIZE - len, "%d ", j);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
}
}
}
len += snprintf(page + len, PAGE_SIZE - len, "Interrupt work histogram:\n");
for (i = 0; i < MAX_WORK; i++)
len += snprintf(page + len, PAGE_SIZE - len, "hist[%2d]: %8u%c", i,
board->histogram[i], (i &&
((i + 1) % 4 == 0 ||
i == MAX_WORK - 1)) ? '\n' : ' ');
len += snprintf(page + len, PAGE_SIZE - len, "Tx ring histogram:\n");
for (i = 0; i < TX_DESC_MAX; i++)
len += snprintf(page + len, PAGE_SIZE - len, "hist[%2d]: %8u%c", i,
hw->tx_ring_hist[i], (i &&
((i + 1) % 4 == 0 ||
i ==
TX_DESC_MAX - 1)) ? '\n' : ' ');
if (!board->isx21)
{
memset((void *)&last4, 0, sizeof(last4));
memset((void *)&last96, 0, sizeof(last96));
/* Calculate the sum of last 4 intervals: */
for (i = 1; i <= 4; i++)
{
p = (unsigned *)&board->intervals[(board->current_interval +
SLICECOM_BOARD_INTERVALS_SIZE -
i) % SLICECOM_BOARD_INTERVALS_SIZE];
sump = (unsigned *)&last4;
for (j = 0; j < (sizeof(e1_stats_t) / sizeof(unsigned)); j++)
sump[j] += p[j];
}
/* Calculate the sum of last 96 intervals: */
for (i = 1; i <= 96; i++)
{
p = (unsigned *)&board->intervals[(board->current_interval +
SLICECOM_BOARD_INTERVALS_SIZE -
i) % SLICECOM_BOARD_INTERVALS_SIZE];
sump = (unsigned *)&last96;
for (j = 0; j < (sizeof(e1_stats_t) / sizeof(unsigned)); j++)
sump[j] += p[j];
}
len += snprintf(page + len, PAGE_SIZE - len,
"Data in current interval (%d seconds elapsed):\n",
board->elapsed_seconds);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
curr_int->line_code_violations,
curr_int->path_code_violations, curr_int->e_bit_errors);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
curr_int->slip_secs, curr_int->fr_loss_secs,
curr_int->line_err_secs, curr_int->degraded_mins);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
curr_int->errored_secs, curr_int->bursty_err_secs,
curr_int->severely_err_secs, curr_int->unavail_secs);
len += snprintf(page + len, PAGE_SIZE - len,
"Data in Interval 1 (15 minutes):\n");
len += snprintf(page + len, PAGE_SIZE - len,
" %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
prev_int->line_code_violations,
prev_int->path_code_violations, prev_int->e_bit_errors);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
prev_int->slip_secs, prev_int->fr_loss_secs,
prev_int->line_err_secs, prev_int->degraded_mins);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
prev_int->errored_secs, prev_int->bursty_err_secs,
prev_int->severely_err_secs, prev_int->unavail_secs);
len += snprintf(page + len, PAGE_SIZE - len,
"Data in last 4 intervals (1 hour):\n");
len += snprintf(page + len, PAGE_SIZE - len,
" %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
last4.line_code_violations, last4.path_code_violations,
last4.e_bit_errors);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
last4.slip_secs, last4.fr_loss_secs, last4.line_err_secs,
last4.degraded_mins);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
last4.errored_secs, last4.bursty_err_secs,
last4.severely_err_secs, last4.unavail_secs);
len += snprintf(page + len, PAGE_SIZE - len,
"Data in last 96 intervals (24 hours):\n");
len += snprintf(page + len, PAGE_SIZE - len,
" %d Line Code Violations, %d Path Code Violations, %d E-Bit Errors\n",
last96.line_code_violations, last96.path_code_violations,
last96.e_bit_errors);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Slip Secs, %d Fr Loss Secs, %d Line Err Secs, %d Degraded Mins\n",
last96.slip_secs, last96.fr_loss_secs,
last96.line_err_secs, last96.degraded_mins);
len += snprintf(page + len, PAGE_SIZE - len,
" %d Errored Secs, %d Bursty Err Secs, %d Severely Err Secs, %d Unavail Secs\n",
last96.errored_secs, last96.bursty_err_secs,
last96.severely_err_secs, last96.unavail_secs);
}
// len +=snprintf( page + len, PAGE_SIZE - len, "Special events:\n" );
// len +=snprintf( page + len, PAGE_SIZE - len, "\tstat_pri/missed: %u / %u\n", board->stat_pri_races, board->stat_pri_races_missed );
// len +=snprintf( page + len, PAGE_SIZE - len, "\tstat_pti/missed: %u / %u\n", board->stat_pti_races, board->stat_pti_races_missed );
return len;
}
/*
* Memory dump function. Not used currently.
*/
static int BOARD_dump(struct net_device *dev)
{
printk
("BOARD_dump() requested. It is unimplemented, it should not be called\n");
return (-1);
}
/*
* /proc file read function for the files registered by this module.
* This function is called by the procfs implementation when a user
* wants to read from a file registered by this module.
* page is the workspace, start should point to the real start of data,
* off is the file offset, data points to the file's proc_dir_entry
* structure.
* Returns the number of bytes copied to the request buffer.
*/
static int munich_read_proc(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
struct proc_dir_entry *file = (struct proc_dir_entry *)data;
struct net_device *dev = file->parent->data;
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
munich_board_t *board;
int len = 0, i;
u32 timeslots = hw->timeslots;
board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
if (!strcmp(file->name, FILENAME_BOARDNUM))
len = sprintf(page, "%d\n", hw->boardnum);
else if (!strcmp(file->name, FILENAME_TIMESLOTS))
{
for (i = 0; i < 32; i++)
if ((1 << i) & timeslots)
len += snprintf(page + len, PAGE_SIZE - len, "%d ", i);
len += snprintf(page + len, PAGE_SIZE - len, "\n");
}
else if (!strcmp(file->name, FILENAME_FRAMING))
{
i = 0;
while (slicecom_framings[i].value &&
slicecom_framings[i].value != board->framing)
i++;
len += snprintf(page + len, PAGE_SIZE - len, "%s\n",
slicecom_framings[i].name);
}
else if (!strcmp(file->name, FILENAME_LINECODE))
{
i = 0;
while (slicecom_linecodes[i].value &&
slicecom_linecodes[i].value != board->linecode)
i++;
len += snprintf(page + len, PAGE_SIZE - len, "%s\n",
slicecom_linecodes[i].name);
}
else if (!strcmp(file->name, FILENAME_CLOCK_SOURCE))
{
i = 0;
while (slicecom_clock_sources[i].value &&
slicecom_clock_sources[i].value != board->clock_source)
i++;
len +=
snprintf(page + len, PAGE_SIZE - len, "%s\n",
slicecom_clock_sources[i].name);
}
else if (!strcmp(file->name, FILENAME_LOOPBACK))
{
i = 0;
while (slicecom_loopbacks[i].value &&
slicecom_loopbacks[i].value != board->loopback)
i++;
len += snprintf(page + len, PAGE_SIZE - len, "%s\n",
slicecom_loopbacks[i].name);
}
/* We set permissions to write-only for REG and LBIREG, but root can read them anyway: */
else if (!strcmp(file->name, FILENAME_REG))
{
len += snprintf(page + len, PAGE_SIZE - len,
"%s: " FILENAME_REG ": write-only file\n", dev->name);
}
else if (!strcmp(file->name, FILENAME_LBIREG))
{
len += snprintf(page + len, PAGE_SIZE - len,
"%s: " FILENAME_LBIREG ": write-only file\n", dev->name);
}
else
{
printk("slicecom_read_proc: internal error, filename %s\n", file->name);
return -EBADF;
}
/* file handling administration: count eof status, offset, start address
and count: */
if (off >= len)
{
*eof = 1;
return 0;
}
*start = page + off;
if (count >= len - off)
*eof = 1;
return min((off_t) count, (off_t) len - off);
}
/*
* Write function for /proc files registered by us.
* See the comment on read function above.
* Beware! buffer is in userspace!!!
* Returns the number of bytes written
*/
static int munich_write_proc(struct file *file, const char *buffer,
u_long count, void *data)
{
struct proc_dir_entry *entry = (struct proc_dir_entry *)data;
struct net_device *dev = (struct net_device *)entry->parent->data;
struct comx_channel *ch = dev->priv;
struct slicecom_privdata *hw = ch->HW_privdata;
munich_board_t *board;
unsigned long ts, tmp_boardnum;
u32 tmp_timeslots = 0;
char *page, *p;
int i;
board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
/* Paranoia checking: */
if (file->f_dentry->d_inode->i_ino != entry->low_ino)
{
printk(KERN_ERR "munich_write_proc: file <-> data internal error\n");
return -EIO;
}
/* Request tmp buffer */
if (!(page = (char *)__get_free_page(GFP_KERNEL)))
return -ENOMEM;
/* Copy user data and cut trailing \n */
copy_from_user(page, buffer, count = min(count, PAGE_SIZE));
if (*(page + count - 1) == '\n')
*(page + count - 1) = 0;
*(page + PAGE_SIZE - 1) = 0;
if (!strcmp(entry->name, FILENAME_BOARDNUM))
{
tmp_boardnum = simple_strtoul(page, NULL, 0);
if (0 <= tmp_boardnum && tmp_boardnum < MAX_BOARDS)
hw->boardnum = tmp_boardnum;
else
{
printk("%s: " FILENAME_BOARDNUM " range is 0...%d\n", dev->name,
MAX_BOARDS - 1);
free_page((unsigned long)page);
return -EINVAL;
}
}
else if (!strcmp(entry->name, FILENAME_TIMESLOTS))
{
p = page;
while (*p)
{
if (isspace(*p))
p++;
else
{
ts = simple_strtoul(p, &p, 10); /* base = 10: Don't read 09 as an octal number */
/* ts = 0 ha nem tudta beolvasni a stringet, erre egy kicsit epitek itt: */
if (0 <= ts && ts < 32)
{
tmp_timeslots |= (1 << ts);
}
else
{
printk("%s: " FILENAME_TIMESLOTS " range is 1...31\n",
dev->name);
free_page((unsigned long)page);
return -EINVAL;
}
}
}
hw->timeslots = tmp_timeslots;
}
else if (!strcmp(entry->name, FILENAME_FRAMING))
{
i = 0;
while (slicecom_framings[i].value &&
strncmp(slicecom_framings[i].name, page,
strlen(slicecom_framings[i].name)))
i++;
if (!slicecom_framings[i].value)
{
printk("slicecom: %s: Invalid " FILENAME_FRAMING " '%s'\n",
dev->name, page);
free_page((unsigned long)page);
return -EINVAL;
}
else
{ /*
* If somebody says:
* echo >boardnum 0
* echo >framing no-crc4
* echo >boardnum 1
* - when the framing was set, hw->boardnum was 0, so it would set the framing for board 0
* Workaround: allow to set it only if interface is administrative UP
*/
if (netif_running(dev))
slicecom_set_framing(hw->boardnum, slicecom_framings[i].value);
else
{
printk("%s: " FILENAME_FRAMING
" can not be set while the interface is DOWN\n",
dev->name);
free_page((unsigned long)page);
return -EINVAL;
}
}
}
else if (!strcmp(entry->name, FILENAME_LINECODE))
{
i = 0;
while (slicecom_linecodes[i].value &&
strncmp(slicecom_linecodes[i].name, page,
strlen(slicecom_linecodes[i].name)))
i++;
if (!slicecom_linecodes[i].value)
{
printk("slicecom: %s: Invalid " FILENAME_LINECODE " '%s'\n",
dev->name, page);
free_page((unsigned long)page);
return -EINVAL;
}
else
{ /*
* Allow to set it only if interface is administrative UP,
* for the same reason as FILENAME_FRAMING
*/
if (netif_running(dev))
slicecom_set_linecode(hw->boardnum,
slicecom_linecodes[i].value);
else
{
printk("%s: " FILENAME_LINECODE
" can not be set while the interface is DOWN\n",
dev->name);
free_page((unsigned long)page);
return -EINVAL;
}
}
}
else if (!strcmp(entry->name, FILENAME_CLOCK_SOURCE))
{
i = 0;
while (slicecom_clock_sources[i].value &&
strncmp(slicecom_clock_sources[i].name, page,
strlen(slicecom_clock_sources[i].name)))
i++;
if (!slicecom_clock_sources[i].value)
{
printk("%s: Invalid " FILENAME_CLOCK_SOURCE " '%s'\n", dev->name,
page);
free_page((unsigned long)page);
return -EINVAL;
}
else
{ /*
* Allow to set it only if interface is administrative UP,
* for the same reason as FILENAME_FRAMING
*/
if (netif_running(dev))
slicecom_set_clock_source(hw->boardnum,
slicecom_clock_sources[i].value);
else
{
printk("%s: " FILENAME_CLOCK_SOURCE
" can not be set while the interface is DOWN\n",
dev->name);
free_page((unsigned long)page);
return -EINVAL;
}
}
}
else if (!strcmp(entry->name, FILENAME_LOOPBACK))
{
i = 0;
while (slicecom_loopbacks[i].value &&
strncmp(slicecom_loopbacks[i].name, page,
strlen(slicecom_loopbacks[i].name)))
i++;
if (!slicecom_loopbacks[i].value)
{
printk("%s: Invalid " FILENAME_LOOPBACK " '%s'\n", dev->name, page);
free_page((unsigned long)page);
return -EINVAL;
}
else
{ /*
* Allow to set it only if interface is administrative UP,
* for the same reason as FILENAME_FRAMING
*/
if (netif_running(dev))
slicecom_set_loopback(hw->boardnum,
slicecom_loopbacks[i].value);
else
{
printk("%s: " FILENAME_LOOPBACK
" can not be set while the interface is DOWN\n",
dev->name);
free_page((unsigned long)page);
return -EINVAL;
}
}
}
else if (!strcmp(entry->name, FILENAME_REG))
{ /* DEL: 'reg' csak tmp */
char *p;
u32 *bar1 = board->bar1;
reg = simple_strtoul(page, &p, 0);
reg_ertek = simple_strtoul(p + 1, NULL, 0);
if (reg < 0x100)
{
printk("reg(0x%02x) := 0x%08x jiff: %lu\n", reg, reg_ertek, jiffies);
writel(reg_ertek, MUNICH_VIRT(reg >> 2));
}
else
{
printk("reg(0x%02x) is 0x%08x jiff: %lu\n", reg - 0x100,
readl(MUNICH_VIRT((reg - 0x100) >> 2)), jiffies);
}
}
else if (!strcmp(entry->name, FILENAME_LBIREG))
{ /* DEL: 'lbireg' csak tmp */
char *p;
u8 *lbi = board->lbi;
lbireg = simple_strtoul(page, &p, 0);
lbireg_ertek = simple_strtoul(p + 1, NULL, 0);
if (lbireg < 0x100)
{
printk("lbireg(0x%02x) := 0x%02x jiff: %lu\n", lbireg,
lbireg_ertek, jiffies);
writeb(lbireg_ertek, lbi + lbireg);
}
else
printk("lbireg(0x%02x) is 0x%02x jiff: %lu\n", lbireg - 0x100,
readb(lbi + lbireg - 0x100), jiffies);
}
else
{
printk(KERN_ERR "munich_write_proc: internal error, filename %s\n",
entry->name);
free_page((unsigned long)page);
return -EBADF;
}
/* Don't forget to free the workspace */
free_page((unsigned long)page);
return count;
}
/*
* Boardtype init function.
* Called by the comx (upper) layer, when you set boardtype.
* Allocates resources associated to using munich board for this device,
* initializes ch_struct pointers etc.
* Returns 0 on success and standard error codes on error.
*/
static int init_escape(struct comx_channel *ch)
{
kfree(ch->HW_privdata);
return -EIO;
}
static int BOARD_init(struct net_device *dev)
{
struct comx_channel *ch = (struct comx_channel *)dev->priv;
struct slicecom_privdata *hw;
struct proc_dir_entry *new_file;
/* Alloc data for private structure */
if ((ch->HW_privdata =
kmalloc(sizeof(struct slicecom_privdata), GFP_KERNEL)) == NULL)
return -ENOMEM;
memset(hw = ch->HW_privdata, 0, sizeof(struct slicecom_privdata));
/* Register /proc files */
if ((new_file = create_proc_entry(FILENAME_BOARDNUM, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
if (ch->hardware == &slicecomhw)
{
if ((new_file = create_proc_entry(FILENAME_TIMESLOTS, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
if ((new_file = create_proc_entry(FILENAME_FRAMING, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
if ((new_file = create_proc_entry(FILENAME_LINECODE, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
if ((new_file = create_proc_entry(FILENAME_CLOCK_SOURCE, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
if ((new_file = create_proc_entry(FILENAME_LOOPBACK, S_IFREG | 0644,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
}
/* DEL: ez itt csak fejlesztesi celokra!! */
if ((new_file = create_proc_entry(FILENAME_REG, S_IFREG | 0200, ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
/* DEL: ez itt csak fejlesztesi celokra!! */
if ((new_file = create_proc_entry(FILENAME_LBIREG, S_IFREG | 0200,
ch->procdir)) == NULL)
return init_escape(ch);
new_file->data = (void *)new_file;
new_file->read_proc = &munich_read_proc;
new_file->write_proc = &munich_write_proc;
// new_file->proc_iops = &comx_normal_inode_ops;
new_file->nlink = 1;
/* Fill in ch_struct hw specific pointers: */
ch->HW_txe = MUNICH_txe;
ch->HW_open = MUNICH_open;
ch->HW_close = MUNICH_close;
ch->HW_send_packet = MUNICH_send_packet;
#ifndef COMX_NEW
ch->HW_minden = MUNICH_minden;
#else
ch->HW_statistics = MUNICH_minden;
#endif
hw->boardnum = SLICECOM_BOARDNUM_DEFAULT;
hw->timeslots = ch->hardware == &pcicomhw ? 0xffffffff : 2;
/* O.K. Count one more user on this module */
MOD_INC_USE_COUNT;
return 0;
}
/*
* Boardtype exit function.
* Called by the comx (upper) layer, when you clear boardtype from munich.
* Frees resources associated to using munich board for this device,
* resets ch_struct pointers etc.
*/
static int BOARD_exit(struct net_device *dev)
{
struct comx_channel *ch = (struct comx_channel *)dev->priv;
/* Free private data area */
// board = hw->boardnum + (ch->hardware == &pcicomhw ? pcicom_boards : slicecom_boards);
kfree(ch->HW_privdata);
/* Remove /proc files */
remove_proc_entry(FILENAME_BOARDNUM, ch->procdir);
if (ch->hardware == &slicecomhw)
{
remove_proc_entry(FILENAME_TIMESLOTS, ch->procdir);
remove_proc_entry(FILENAME_FRAMING, ch->procdir);
remove_proc_entry(FILENAME_LINECODE, ch->procdir);
remove_proc_entry(FILENAME_CLOCK_SOURCE, ch->procdir);
remove_proc_entry(FILENAME_LOOPBACK, ch->procdir);
}
remove_proc_entry(FILENAME_REG, ch->procdir);
remove_proc_entry(FILENAME_LBIREG, ch->procdir);
/* Minus one user for the module accounting */
MOD_DEC_USE_COUNT;
return 0;
}
static struct comx_hardware slicecomhw =
{
"slicecom",
#ifdef COMX_NEW
VERSION,
#endif
BOARD_init,
BOARD_exit,
BOARD_dump,
NULL
};
static struct comx_hardware pcicomhw =
{
"pcicom",
#ifdef COMX_NEW
VERSION,
#endif
BOARD_init,
BOARD_exit,
BOARD_dump,
NULL
};
/* Module management */
int __init init_mister(void)
{
printk(VERSIONSTR);
comx_register_hardware(&slicecomhw);
comx_register_hardware(&pcicomhw);
return munich_probe();
}
static void __exit cleanup_mister(void)
{
int i;
comx_unregister_hardware("slicecom");
comx_unregister_hardware("pcicom");
for (i = 0; i < MAX_BOARDS; i++)
{
if (slicecom_boards[i].bar1)
iounmap((void *)slicecom_boards[i].bar1);
if (slicecom_boards[i].lbi)
iounmap((void *)slicecom_boards[i].lbi);
if (pcicom_boards[i].bar1)
iounmap((void *)pcicom_boards[i].bar1);
if (pcicom_boards[i].lbi)
iounmap((void *)pcicom_boards[i].lbi);
}
}
module_init(init_mister);
module_exit(cleanup_mister);
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