diff options
Diffstat (limited to 'drivers/isdn/hysdn/hysdn_sched.c')
| -rw-r--r-- | drivers/isdn/hysdn/hysdn_sched.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/drivers/isdn/hysdn/hysdn_sched.c b/drivers/isdn/hysdn/hysdn_sched.c deleted file mode 100644 index 31d7c1415543..000000000000 --- a/drivers/isdn/hysdn/hysdn_sched.c +++ /dev/null @@ -1,197 +0,0 @@ -/* $Id: hysdn_sched.c,v 1.5.6.4 2001/11/06 21:58:19 kai Exp $ - * - * Linux driver for HYSDN cards - * scheduler routines for handling exchange card <-> pc. - * - * Author Werner Cornelius (werner@titro.de) for Hypercope GmbH - * Copyright 1999 by Werner Cornelius (werner@titro.de) - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by reference. - * - */ - -#include <linux/signal.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <asm/io.h> - -#include "hysdn_defs.h" - -/*****************************************************************************/ -/* hysdn_sched_rx is called from the cards handler to announce new data is */ -/* available from the card. The routine has to handle the data and return */ -/* with a nonzero code if the data could be worked (or even thrown away), if */ -/* no room to buffer the data is available a zero return tells the card */ -/* to keep the data until later. */ -/*****************************************************************************/ -int -hysdn_sched_rx(hysdn_card *card, unsigned char *buf, unsigned short len, - unsigned short chan) -{ - - switch (chan) { - case CHAN_NDIS_DATA: - if (hynet_enable & (1 << card->myid)) { - /* give packet to network handler */ - hysdn_rx_netpkt(card, buf, len); - } - break; - - case CHAN_ERRLOG: - hysdn_card_errlog(card, (tErrLogEntry *) buf, len); - if (card->err_log_state == ERRLOG_STATE_ON) - card->err_log_state = ERRLOG_STATE_START; /* start new fetch */ - break; -#ifdef CONFIG_HYSDN_CAPI - case CHAN_CAPI: -/* give packet to CAPI handler */ - if (hycapi_enable & (1 << card->myid)) { - hycapi_rx_capipkt(card, buf, len); - } - break; -#endif /* CONFIG_HYSDN_CAPI */ - default: - printk(KERN_INFO "irq message channel %d len %d unhandled \n", chan, len); - break; - - } /* switch rx channel */ - - return (1); /* always handled */ -} /* hysdn_sched_rx */ - -/*****************************************************************************/ -/* hysdn_sched_tx is called from the cards handler to announce that there is */ -/* room in the tx-buffer to the card and data may be sent if needed. */ -/* If the routine wants to send data it must fill buf, len and chan with the */ -/* appropriate data and return a nonzero value. With a zero return no new */ -/* data to send is assumed. maxlen specifies the buffer size available for */ -/* sending. */ -/*****************************************************************************/ -int -hysdn_sched_tx(hysdn_card *card, unsigned char *buf, - unsigned short volatile *len, unsigned short volatile *chan, - unsigned short maxlen) -{ - struct sk_buff *skb; - - if (card->net_tx_busy) { - card->net_tx_busy = 0; /* reset flag */ - hysdn_tx_netack(card); /* acknowledge packet send */ - } /* a network packet has completely been transferred */ - /* first of all async requests are handled */ - if (card->async_busy) { - if (card->async_len <= maxlen) { - memcpy(buf, card->async_data, card->async_len); - *len = card->async_len; - *chan = card->async_channel; - card->async_busy = 0; /* reset request */ - return (1); - } - card->async_busy = 0; /* in case of length error */ - } /* async request */ - if ((card->err_log_state == ERRLOG_STATE_START) && - (maxlen >= ERRLOG_CMD_REQ_SIZE)) { - strcpy(buf, ERRLOG_CMD_REQ); /* copy the command */ - *len = ERRLOG_CMD_REQ_SIZE; /* buffer length */ - *chan = CHAN_ERRLOG; /* and channel */ - card->err_log_state = ERRLOG_STATE_ON; /* new state is on */ - return (1); /* tell that data should be send */ - } /* error log start and able to send */ - if ((card->err_log_state == ERRLOG_STATE_STOP) && - (maxlen >= ERRLOG_CMD_STOP_SIZE)) { - strcpy(buf, ERRLOG_CMD_STOP); /* copy the command */ - *len = ERRLOG_CMD_STOP_SIZE; /* buffer length */ - *chan = CHAN_ERRLOG; /* and channel */ - card->err_log_state = ERRLOG_STATE_OFF; /* new state is off */ - return (1); /* tell that data should be send */ - } /* error log start and able to send */ - /* now handle network interface packets */ - if ((hynet_enable & (1 << card->myid)) && - (skb = hysdn_tx_netget(card)) != NULL) - { - if (skb->len <= maxlen) { - /* copy the packet to the buffer */ - skb_copy_from_linear_data(skb, buf, skb->len); - *len = skb->len; - *chan = CHAN_NDIS_DATA; - card->net_tx_busy = 1; /* we are busy sending network data */ - return (1); /* go and send the data */ - } else - hysdn_tx_netack(card); /* aknowledge packet -> throw away */ - } /* send a network packet if available */ -#ifdef CONFIG_HYSDN_CAPI - if (((hycapi_enable & (1 << card->myid))) && - ((skb = hycapi_tx_capiget(card)) != NULL)) - { - if (skb->len <= maxlen) { - skb_copy_from_linear_data(skb, buf, skb->len); - *len = skb->len; - *chan = CHAN_CAPI; - hycapi_tx_capiack(card); - return (1); /* go and send the data */ - } - } -#endif /* CONFIG_HYSDN_CAPI */ - return (0); /* nothing to send */ -} /* hysdn_sched_tx */ - - -/*****************************************************************************/ -/* send one config line to the card and return 0 if successful, otherwise a */ -/* negative error code. */ -/* The function works with timeouts perhaps not giving the greatest speed */ -/* sending the line, but this should be meaningless because only some lines */ -/* are to be sent and this happens very seldom. */ -/*****************************************************************************/ -int -hysdn_tx_cfgline(hysdn_card *card, unsigned char *line, unsigned short chan) -{ - int cnt = 50; /* timeout intervalls */ - unsigned long flags; - - if (card->debug_flags & LOG_SCHED_ASYN) - hysdn_addlog(card, "async tx-cfg chan=%d len=%d", chan, strlen(line) + 1); - - while (card->async_busy) { - - if (card->debug_flags & LOG_SCHED_ASYN) - hysdn_addlog(card, "async tx-cfg delayed"); - - msleep_interruptible(20); /* Timeout 20ms */ - if (!--cnt) - return (-ERR_ASYNC_TIME); /* timed out */ - } /* wait for buffer to become free */ - - spin_lock_irqsave(&card->hysdn_lock, flags); - strcpy(card->async_data, line); - card->async_len = strlen(line) + 1; - card->async_channel = chan; - card->async_busy = 1; /* request transfer */ - - /* now queue the task */ - schedule_work(&card->irq_queue); - spin_unlock_irqrestore(&card->hysdn_lock, flags); - - if (card->debug_flags & LOG_SCHED_ASYN) - hysdn_addlog(card, "async tx-cfg data queued"); - - cnt++; /* short delay */ - - while (card->async_busy) { - - if (card->debug_flags & LOG_SCHED_ASYN) - hysdn_addlog(card, "async tx-cfg waiting for tx-ready"); - - msleep_interruptible(20); /* Timeout 20ms */ - if (!--cnt) - return (-ERR_ASYNC_TIME); /* timed out */ - } /* wait for buffer to become free again */ - - if (card->debug_flags & LOG_SCHED_ASYN) - hysdn_addlog(card, "async tx-cfg data send"); - - return (0); /* line send correctly */ -} /* hysdn_tx_cfgline */ |