1579 lines
44 KiB
C
1579 lines
44 KiB
C
/* $Id$
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* hfc_sx.c low level driver for CCD´s hfc-s+/sp based cards
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*
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* Author Werner Cornelius (werner@isdn4linux.de)
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* based on existing driver for CCD HFC PCI cards
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*
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* Copyright 1999 by Werner Cornelius (werner@isdn4linux.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Log$
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*
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*
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*/
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#include <linux/config.h>
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#define __NO_VERSION__
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#include "hisax.h"
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#include "hfc_sx.h"
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#include "isdnl1.h"
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#include <linux/interrupt.h>
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extern const char *CardType[];
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static const char *hfcsx_revision = "$Revision$";
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/***************************************/
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/* IRQ-table for CCDs demo board */
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/* IRQs 6,5,10,11,12,15 are supported */
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/***************************************/
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static u_char ccd_sp_irqtab[16] = {
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0,0,0,0,0,2,1,0,0,0,3,4,5,0,0,6
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};
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#define NT_T1_COUNT 20 /* number of 3.125ms interrupts for G2 timeout */
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#define byteout(addr,val) outb(val,addr)
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#define bytein(addr) inb(addr)
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/******************************/
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/* In/Out access to registers */
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/******************************/
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static inline void
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Write_hfc(struct IsdnCardState *cs, u_char regnum, u_char val)
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{ register int flags;
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save_flags(flags);
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cli();
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byteout(cs->hw.hfcsx.base+1, regnum);
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byteout(cs->hw.hfcsx.base, val);
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restore_flags(flags);
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}
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static inline u_char
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Read_hfc(struct IsdnCardState *cs, u_char regnum)
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{ register int flags;
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register u_char ret;
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save_flags(flags);
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cli();
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byteout(cs->hw.hfcsx.base+1, regnum);
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ret = bytein(cs->hw.hfcsx.base);
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restore_flags(flags);
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return(ret);
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}
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/**************************************************/
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/* select a fifo and remember which one for reuse */
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/**************************************************/
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static void
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fifo_select(struct IsdnCardState *cs, u_char fifo)
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{ int flags;
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if (fifo == cs->hw.hfcsx.last_fifo)
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return; /* still valid */
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save_flags(flags);
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cli();
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byteout(cs->hw.hfcsx.base+1, HFCSX_FIF_SEL);
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byteout(cs->hw.hfcsx.base, fifo);
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while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
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udelay(4);
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byteout(cs->hw.hfcsx.base, fifo);
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while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
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restore_flags(flags);
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}
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/******************************************/
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/* reset the specified fifo to defaults. */
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/* If its a send fifo init needed markers */
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/******************************************/
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static void
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reset_fifo(struct IsdnCardState *cs, u_char fifo)
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{ int flags;
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save_flags(flags);
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cli();
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fifo_select(cs, fifo); /* first select the fifo */
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byteout(cs->hw.hfcsx.base+1, HFCSX_CIRM);
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byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.cirm | 0x80); /* reset cmd */
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udelay(1);
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while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
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restore_flags(flags);
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}
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/*************************************************************/
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/* write_fifo writes the skb contents to the desired fifo */
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/* if no space is available or an error occurs 0 is returned */
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/* the skb is not released in any way. */
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/*************************************************************/
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static int
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write_fifo(struct IsdnCardState *cs, struct sk_buff *skb, u_char fifo, int trans_max)
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{ unsigned short *msp;
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int fifo_size, count, z1, z2;
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u_char f_msk, f1, f2, *src;
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if (skb->len <= 0) return(0);
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if (fifo & 1) return(0); /* no write fifo */
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fifo_select(cs, fifo);
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if (fifo & 4) {
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fifo_size = D_FIFO_SIZE; /* D-channel */
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f_msk = MAX_D_FRAMES;
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if (trans_max) return(0); /* only HDLC */
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}
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else {
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fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */
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f_msk = MAX_B_FRAMES;
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}
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z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
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z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
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/* Check for transparent mode */
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if (trans_max) {
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z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
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z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
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count = z2 - z1;
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if (count <= 0)
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count += fifo_size; /* free bytes */
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if (count < skb->len+1) return(0); /* no room */
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count = fifo_size - count; /* bytes still not send */
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if (count > 2 * trans_max) return(0); /* delay to long */
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count = skb->len;
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src = skb->data;
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while (count--)
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Write_hfc(cs, HFCSX_FIF_DWR, *src++);
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return(1); /* success */
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}
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msp = ((struct hfcsx_extra *)(cs->hw.hfcsx.extra))->marker;
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msp += (((fifo >> 1) & 3) * (MAX_B_FRAMES+1));
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f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk;
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f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk;
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count = f1 - f2; /* frame count actually buffered */
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if (count < 0)
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count += (f_msk + 1); /* if wrap around */
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if (count > f_msk-1) {
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_write_fifo %d more as %d frames",fifo,f_msk-1);
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return(0);
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}
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*(msp + f1) = z1; /* remember marker */
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_write_fifo %d f1(%x) f2(%x) z1(f1)(%x)",
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fifo, f1, f2, z1);
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/* now determine free bytes in FIFO buffer */
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count = *(msp + f2) - z1;
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if (count <= 0)
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count += fifo_size; /* count now contains available bytes */
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_write_fifo %d count(%ld/%d)",
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fifo, skb->len, count);
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if (count < skb->len) {
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_write_fifo %d no fifo mem", fifo);
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return(0);
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}
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count = skb->len; /* get frame len */
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src = skb->data; /* source pointer */
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while (count--)
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Write_hfc(cs, HFCSX_FIF_DWR, *src++);
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Read_hfc(cs, HFCSX_FIF_INCF1); /* increment F1 */
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udelay(1);
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while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
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return(1);
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}
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/***************************************************************/
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/* read_fifo reads data to an skb from the desired fifo */
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/* if no data is available or an error occurs NULL is returned */
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/* the skb is not released in any way. */
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/***************************************************************/
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static struct sk_buff *
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read_fifo(struct IsdnCardState *cs, u_char fifo, int trans_max)
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{ int fifo_size, count, z1, z2;
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u_char f_msk, f1, f2, *dst;
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struct sk_buff *skb;
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if (!(fifo & 1)) return(NULL); /* no read fifo */
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fifo_select(cs, fifo);
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if (fifo & 4) {
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fifo_size = D_FIFO_SIZE; /* D-channel */
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f_msk = MAX_D_FRAMES;
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if (trans_max) return(NULL); /* only hdlc */
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}
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else {
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fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */
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f_msk = MAX_B_FRAMES;
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}
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/* transparent mode */
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if (trans_max) {
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z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
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z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
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z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
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z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
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/* now determine bytes in actual FIFO buffer */
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count = z1 - z2;
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if (count <= 0)
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count += fifo_size; /* count now contains buffered bytes */
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count++;
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if (count > trans_max)
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count = trans_max; /* limit length */
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if ((skb = dev_alloc_skb(count))) {
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SET_SKB_FREE(skb);
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dst = skb_put(skb, count);
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while (count--)
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*dst++ = Read_hfc(cs, HFCSX_FIF_DRD);
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return(skb);
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}
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else return(NULL); /* no memory */
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}
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do {
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f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk;
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f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk;
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if (f1 == f2) return(NULL); /* no frame available */
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z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
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z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
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z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
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z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_read_fifo %d f1(%x) f2(%x) z1(f2)(%x) z2(f2)(%x)",
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fifo, f1, f2, z1, z2);
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/* now determine bytes in actual FIFO buffer */
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count = z1 - z2;
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if (count <= 0)
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count += fifo_size; /* count now contains buffered bytes */
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count++;
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_read_fifo %d count %ld)",
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fifo, count);
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if ((count > fifo_size) || (count < 4)) {
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "hfcsx_read_fifo %d paket inv. len %d ", fifo , count);
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while (count) {
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count--; /* empty fifo */
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Read_hfc(cs, HFCSX_FIF_DRD);
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}
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skb = NULL;
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} else
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if ((skb = dev_alloc_skb(count - 3))) {
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SET_SKB_FREE(skb);
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count -= 3;
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dst = skb_put(skb, count);
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while (count--)
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*dst++ = Read_hfc(cs, HFCSX_FIF_DRD);
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Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 1 */
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Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 2 */
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if (Read_hfc(cs, HFCSX_FIF_DRD)) {
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idev_kfree_skb(skb, FREE_READ);
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if (cs->debug & L1_DEB_ISAC_FIFO)
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debugl1(cs, "hfcsx_read_fifo %d crc error", fifo);
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skb = NULL;
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}
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} else {
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printk(KERN_WARNING "HFC-SX: receive out of memory\n");
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return(NULL);
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}
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Read_hfc(cs, HFCSX_FIF_INCF2); /* increment F2 */
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udelay(1);
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while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
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udelay(1);
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} while (!skb); /* retry in case of crc error */
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return(skb);
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}
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/******************************************/
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/* free hardware resources used by driver */
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/******************************************/
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void
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release_io_hfcsx(struct IsdnCardState *cs)
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{
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int flags;
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save_flags(flags);
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cli();
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cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */
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Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
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restore_flags(flags);
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Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET); /* Reset On */
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sti();
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout((30 * HZ) / 1000); /* Timeout 30ms */
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Write_hfc(cs, HFCSX_CIRM, 0); /* Reset Off */
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del_timer(&cs->hw.hfcsx.timer);
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release_region(cs->hw.hfcsx.base, 2); /* release IO-Block */
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kfree(cs->hw.hfcsx.extra);
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cs->hw.hfcsx.extra = NULL;
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}
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/**********************************************************/
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/* set_fifo_size determines the size of the RAM and FIFOs */
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/* returning 0 -> need to reset the chip again. */
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/**********************************************************/
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static int set_fifo_size(struct IsdnCardState *cs)
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{
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if (cs->hw.hfcsx.b_fifo_size) return(1); /* already determined */
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if ((cs->hw.hfcsx.chip >> 4) == 9) {
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cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_32K;
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return(1);
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}
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cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_8K;
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cs->hw.hfcsx.cirm |= 0x10; /* only 8K of ram */
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return(0);
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}
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/********************************************************************************/
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/* function called to reset the HFC SX chip. A complete software reset of chip */
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/* and fifos is done. */
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/********************************************************************************/
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static void
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reset_hfcsx(struct IsdnCardState *cs)
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{
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long flags;
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save_flags(flags);
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cli();
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cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */
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Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
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printk(KERN_INFO "HFC_SX: resetting card\n");
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while (1) {
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Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET | cs->hw.hfcsx.cirm ); /* Reset */
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sti();
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout((30 * HZ) / 1000); /* Timeout 30ms */
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Write_hfc(cs, HFCSX_CIRM, cs->hw.hfcsx.cirm); /* Reset Off */
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout((20 * HZ) / 1000); /* Timeout 20ms */
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if (Read_hfc(cs, HFCSX_STATUS) & 2)
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printk(KERN_WARNING "HFC-SX init bit busy\n");
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cs->hw.hfcsx.last_fifo = 0xff; /* invalidate */
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if (!set_fifo_size(cs)) continue;
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break;
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}
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cs->hw.hfcsx.trm = 0 + HFCSX_BTRANS_THRESMASK; /* no echo connect , threshold */
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Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
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|
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Write_hfc(cs, HFCSX_CLKDEL, 0x0e); /* ST-Bit delay for TE-Mode */
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cs->hw.hfcsx.sctrl_e = HFCSX_AUTO_AWAKE;
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Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e); /* S/T Auto awake */
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cs->hw.hfcsx.bswapped = 0; /* no exchange */
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cs->hw.hfcsx.nt_mode = 0; /* we are in TE mode */
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cs->hw.hfcsx.ctmt = HFCSX_TIM3_125 | HFCSX_AUTO_TIMER;
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Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
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|
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cs->hw.hfcsx.int_m1 = HFCSX_INTS_DTRANS | HFCSX_INTS_DREC |
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HFCSX_INTS_L1STATE | HFCSX_INTS_TIMER;
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Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
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||
|
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/* Clear already pending ints */
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if (Read_hfc(cs, HFCSX_INT_S1));
|
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|
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Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 2); /* HFC ST 2 */
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udelay(10);
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Write_hfc(cs, HFCSX_STATES, 2); /* HFC ST 2 */
|
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cs->hw.hfcsx.mst_m = HFCSX_MASTER; /* HFC Master Mode */
|
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|
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Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
|
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cs->hw.hfcsx.sctrl = 0x40; /* set tx_lo mode, error in datasheet ! */
|
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Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
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cs->hw.hfcsx.sctrl_r = 0;
|
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Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
|
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|
||
/* Init GCI/IOM2 in master mode */
|
||
/* Slots 0 and 1 are set for B-chan 1 and 2 */
|
||
/* D- and monitor/CI channel are not enabled */
|
||
/* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
|
||
/* STIO2 is used as data input, B1+B2 from IOM->ST */
|
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/* ST B-channel send disabled -> continous 1s */
|
||
/* The IOM slots are always enabled */
|
||
cs->hw.hfcsx.conn = 0x36; /* set data flow directions */
|
||
Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
|
||
Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* B1-Slot 0 STIO1 out enabled */
|
||
Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* B2-Slot 1 STIO1 out enabled */
|
||
Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* B1-Slot 0 STIO2 in enabled */
|
||
Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* B2-Slot 1 STIO2 in enabled */
|
||
|
||
/* Finally enable IRQ output */
|
||
cs->hw.hfcsx.int_m2 = HFCSX_IRQ_ENABLE;
|
||
Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
|
||
if (Read_hfc(cs, HFCSX_INT_S2));
|
||
restore_flags(flags);
|
||
}
|
||
|
||
/***************************************************/
|
||
/* Timer function called when kernel timer expires */
|
||
/***************************************************/
|
||
static void
|
||
hfcsx_Timer(struct IsdnCardState *cs)
|
||
{
|
||
cs->hw.hfcsx.timer.expires = jiffies + 75;
|
||
/* WD RESET */
|
||
/* WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcsx.ctmt | 0x80);
|
||
add_timer(&cs->hw.hfcsx.timer);
|
||
*/
|
||
}
|
||
|
||
|
||
/*********************************/
|
||
/* schedule a new D-channel task */
|
||
/*********************************/
|
||
static void
|
||
sched_event_D_sx(struct IsdnCardState *cs, int event)
|
||
{
|
||
test_and_set_bit(event, &cs->event);
|
||
queue_task(&cs->tqueue, &tq_immediate);
|
||
mark_bh(IMMEDIATE_BH);
|
||
}
|
||
|
||
/*********************************/
|
||
/* schedule a new b_channel task */
|
||
/*********************************/
|
||
static void
|
||
hfcsx_sched_event(struct BCState *bcs, int event)
|
||
{
|
||
bcs->event |= 1 << event;
|
||
queue_task(&bcs->tqueue, &tq_immediate);
|
||
mark_bh(IMMEDIATE_BH);
|
||
}
|
||
|
||
/************************************************/
|
||
/* select a b-channel entry matching and active */
|
||
/************************************************/
|
||
static
|
||
struct BCState *
|
||
Sel_BCS(struct IsdnCardState *cs, int channel)
|
||
{
|
||
if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
|
||
return (&cs->bcs[0]);
|
||
else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
|
||
return (&cs->bcs[1]);
|
||
else
|
||
return (NULL);
|
||
}
|
||
|
||
/*******************************/
|
||
/* D-channel receive procedure */
|
||
/*******************************/
|
||
static
|
||
int
|
||
receive_dmsg(struct IsdnCardState *cs)
|
||
{
|
||
struct sk_buff *skb;
|
||
int count = 5;
|
||
|
||
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
debugl1(cs, "rec_dmsg blocked");
|
||
return (1);
|
||
}
|
||
|
||
do {
|
||
skb = read_fifo(cs, HFCSX_SEL_D_RX, 0);
|
||
if (skb) {
|
||
skb_queue_tail(&cs->rq, skb);
|
||
sched_event_D_sx(cs, D_RCVBUFREADY);
|
||
}
|
||
} while (--count && skb);
|
||
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
return (1);
|
||
}
|
||
|
||
/**********************************/
|
||
/* B-channel main receive routine */
|
||
/**********************************/
|
||
void
|
||
main_rec_hfcsx(struct BCState *bcs)
|
||
{
|
||
long flags;
|
||
struct IsdnCardState *cs = bcs->cs;
|
||
int count = 5;
|
||
struct sk_buff *skb;
|
||
|
||
save_flags(flags);
|
||
|
||
Begin:
|
||
count--;
|
||
cli();
|
||
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
debugl1(cs, "rec_data %d blocked", bcs->channel);
|
||
restore_flags(flags);
|
||
return;
|
||
}
|
||
sti();
|
||
skb = read_fifo(cs, ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ?
|
||
HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX,
|
||
(bcs->mode == L1_MODE_TRANS) ?
|
||
HFCSX_BTRANS_THRESHOLD : 0);
|
||
|
||
if (skb) {
|
||
cli();
|
||
skb_queue_tail(&bcs->rqueue, skb);
|
||
sti();
|
||
hfcsx_sched_event(bcs, B_RCVBUFREADY);
|
||
}
|
||
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
if (count && skb)
|
||
goto Begin;
|
||
restore_flags(flags);
|
||
return;
|
||
}
|
||
|
||
/**************************/
|
||
/* D-channel send routine */
|
||
/**************************/
|
||
static void
|
||
hfcsx_fill_dfifo(struct IsdnCardState *cs)
|
||
{
|
||
if (!cs->tx_skb)
|
||
return;
|
||
if (cs->tx_skb->len <= 0)
|
||
return;
|
||
|
||
if (write_fifo(cs, cs->tx_skb, HFCSX_SEL_D_TX, 0)) {
|
||
idev_kfree_skb(cs->tx_skb, FREE_WRITE);
|
||
cs->tx_skb = NULL;
|
||
}
|
||
return;
|
||
}
|
||
|
||
/**************************/
|
||
/* B-channel send routine */
|
||
/**************************/
|
||
static void
|
||
hfcsx_fill_fifo(struct BCState *bcs)
|
||
{
|
||
struct IsdnCardState *cs = bcs->cs;
|
||
int flags;
|
||
|
||
if (!bcs->tx_skb)
|
||
return;
|
||
if (bcs->tx_skb->len <= 0)
|
||
return;
|
||
|
||
save_flags(flags);
|
||
sti();
|
||
|
||
if (write_fifo(cs, bcs->tx_skb,
|
||
((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ?
|
||
HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX,
|
||
(bcs->mode == L1_MODE_TRANS) ?
|
||
HFCSX_BTRANS_THRESHOLD : 0)) {
|
||
|
||
bcs->tx_cnt -= bcs->tx_skb->len;
|
||
if (bcs->st->lli.l1writewakeup &&
|
||
(PACKET_NOACK != bcs->tx_skb->pkt_type))
|
||
bcs->st->lli.l1writewakeup(bcs->st, bcs->tx_skb->len);
|
||
idev_kfree_skb(bcs->tx_skb, FREE_WRITE);
|
||
bcs->tx_skb = NULL;
|
||
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
|
||
}
|
||
|
||
cli();
|
||
restore_flags(flags);
|
||
return;
|
||
}
|
||
|
||
/**********************************************/
|
||
/* D-channel l1 state call for leased NT-mode */
|
||
/**********************************************/
|
||
static void
|
||
dch_nt_l2l1(struct PStack *st, int pr, void *arg)
|
||
{
|
||
struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
|
||
|
||
switch (pr) {
|
||
case (PH_DATA | REQUEST):
|
||
case (PH_PULL | REQUEST):
|
||
case (PH_PULL | INDICATION):
|
||
st->l1.l1hw(st, pr, arg);
|
||
break;
|
||
case (PH_ACTIVATE | REQUEST):
|
||
st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
|
||
break;
|
||
case (PH_TESTLOOP | REQUEST):
|
||
if (1 & (long) arg)
|
||
debugl1(cs, "PH_TEST_LOOP B1");
|
||
if (2 & (long) arg)
|
||
debugl1(cs, "PH_TEST_LOOP B2");
|
||
if (!(3 & (long) arg))
|
||
debugl1(cs, "PH_TEST_LOOP DISABLED");
|
||
st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
|
||
break;
|
||
default:
|
||
if (cs->debug)
|
||
debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/***********************/
|
||
/* set/reset echo mode */
|
||
/***********************/
|
||
static int
|
||
hfcsx_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
|
||
{
|
||
int flags;
|
||
int i = *(unsigned int *) ic->parm.num;
|
||
|
||
if ((ic->arg == 98) &&
|
||
(!(cs->hw.hfcsx.int_m1 & (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC + HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC)))) {
|
||
save_flags(flags);
|
||
cli();
|
||
Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 0); /* HFC ST G0 */
|
||
udelay(10);
|
||
cs->hw.hfcsx.sctrl |= SCTRL_MODE_NT;
|
||
Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); /* set NT-mode */
|
||
udelay(10);
|
||
Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 1); /* HFC ST G1 */
|
||
udelay(10);
|
||
Write_hfc(cs, HFCSX_STATES, 1 | HFCSX_ACTIVATE | HFCSX_DO_ACTION);
|
||
cs->dc.hfcsx.ph_state = 1;
|
||
cs->hw.hfcsx.nt_mode = 1;
|
||
cs->hw.hfcsx.nt_timer = 0;
|
||
cs->stlist->l2.l2l1 = dch_nt_l2l1;
|
||
restore_flags(flags);
|
||
debugl1(cs, "NT mode activated");
|
||
return (0);
|
||
}
|
||
if ((cs->chanlimit > 1) || (cs->hw.hfcsx.bswapped) ||
|
||
(cs->hw.hfcsx.nt_mode) || (ic->arg != 12))
|
||
return (-EINVAL);
|
||
|
||
save_flags(flags);
|
||
cli();
|
||
if (i) {
|
||
cs->logecho = 1;
|
||
cs->hw.hfcsx.trm |= 0x20; /* enable echo chan */
|
||
cs->hw.hfcsx.int_m1 |= HFCSX_INTS_B2REC;
|
||
/* reset Channel !!!!! */
|
||
} else {
|
||
cs->logecho = 0;
|
||
cs->hw.hfcsx.trm &= ~0x20; /* disable echo chan */
|
||
cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_B2REC;
|
||
}
|
||
cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.conn |= 0x10; /* B2-IOM -> B2-ST */
|
||
cs->hw.hfcsx.ctmt &= ~2;
|
||
Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
|
||
Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
|
||
Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
|
||
Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
|
||
Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
restore_flags(flags);
|
||
return (0);
|
||
} /* hfcsx_auxcmd */
|
||
|
||
/*****************************/
|
||
/* E-channel receive routine */
|
||
/*****************************/
|
||
static void
|
||
receive_emsg(struct IsdnCardState *cs)
|
||
{
|
||
int flags;
|
||
int count = 5;
|
||
u_char *ptr;
|
||
struct sk_buff *skb;
|
||
|
||
|
||
save_flags(flags);
|
||
cli();
|
||
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
debugl1(cs, "echo_rec_data blocked");
|
||
restore_flags(flags);
|
||
return;
|
||
}
|
||
sti();
|
||
|
||
do {
|
||
skb = read_fifo(cs, HFCSX_SEL_B2_RX, 0);
|
||
if (skb) {
|
||
if (cs->debug & DEB_DLOG_HEX) {
|
||
ptr = cs->dlog;
|
||
if ((skb->len) < MAX_DLOG_SPACE / 3 - 10) {
|
||
*ptr++ = 'E';
|
||
*ptr++ = 'C';
|
||
*ptr++ = 'H';
|
||
*ptr++ = 'O';
|
||
*ptr++ = ':';
|
||
ptr += QuickHex(ptr, skb->data, skb->len);
|
||
ptr--;
|
||
*ptr++ = '\n';
|
||
*ptr = 0;
|
||
HiSax_putstatus(cs, NULL, cs->dlog);
|
||
} else
|
||
HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", skb->len);
|
||
}
|
||
idev_kfree_skb(skb, FREE_READ);
|
||
}
|
||
} while (--count && skb);
|
||
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
restore_flags(flags);
|
||
return;
|
||
} /* receive_emsg */
|
||
|
||
|
||
/*********************/
|
||
/* Interrupt handler */
|
||
/*********************/
|
||
static void
|
||
hfcsx_interrupt(int intno, void *dev_id, struct pt_regs *regs)
|
||
{
|
||
struct IsdnCardState *cs = dev_id;
|
||
u_char exval;
|
||
struct BCState *bcs;
|
||
int count = 15;
|
||
long flags;
|
||
u_char val, stat;
|
||
|
||
if (!cs) {
|
||
printk(KERN_WARNING "HFC-SX: Spurious interrupt!\n");
|
||
return;
|
||
}
|
||
if (!(cs->hw.hfcsx.int_m2 & 0x08))
|
||
return; /* not initialised */
|
||
|
||
if (HFCSX_ANYINT & (stat = Read_hfc(cs, HFCSX_STATUS))) {
|
||
val = Read_hfc(cs, HFCSX_INT_S1);
|
||
if (cs->debug & L1_DEB_ISAC)
|
||
debugl1(cs, "HFC-SX: stat(%02x) s1(%02x)", stat, val);
|
||
} else
|
||
return;
|
||
|
||
if (cs->debug & L1_DEB_ISAC)
|
||
debugl1(cs, "HFC-SX irq %x %s", val,
|
||
test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
|
||
"locked" : "unlocked");
|
||
val &= cs->hw.hfcsx.int_m1;
|
||
if (val & 0x40) { /* state machine irq */
|
||
exval = Read_hfc(cs, HFCSX_STATES) & 0xf;
|
||
if (cs->debug & L1_DEB_ISAC)
|
||
debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcsx.ph_state,
|
||
exval);
|
||
cs->dc.hfcsx.ph_state = exval;
|
||
sched_event_D_sx(cs, D_L1STATECHANGE);
|
||
val &= ~0x40;
|
||
}
|
||
if (val & 0x80) { /* timer irq */
|
||
if (cs->hw.hfcsx.nt_mode) {
|
||
if ((--cs->hw.hfcsx.nt_timer) < 0)
|
||
sched_event_D_sx(cs, D_L1STATECHANGE);
|
||
}
|
||
val &= ~0x80;
|
||
Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
|
||
}
|
||
while (val) {
|
||
save_flags(flags);
|
||
cli();
|
||
if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
cs->hw.hfcsx.int_s1 |= val;
|
||
restore_flags(flags);
|
||
return;
|
||
}
|
||
if (cs->hw.hfcsx.int_s1 & 0x18) {
|
||
exval = val;
|
||
val = cs->hw.hfcsx.int_s1;
|
||
cs->hw.hfcsx.int_s1 = exval;
|
||
}
|
||
if (val & 0x08) {
|
||
if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) {
|
||
if (cs->debug)
|
||
debugl1(cs, "hfcsx spurious 0x08 IRQ");
|
||
} else
|
||
main_rec_hfcsx(bcs);
|
||
}
|
||
if (val & 0x10) {
|
||
if (cs->logecho)
|
||
receive_emsg(cs);
|
||
else if (!(bcs = Sel_BCS(cs, 1))) {
|
||
if (cs->debug)
|
||
debugl1(cs, "hfcsx spurious 0x10 IRQ");
|
||
} else
|
||
main_rec_hfcsx(bcs);
|
||
}
|
||
if (val & 0x01) {
|
||
if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) {
|
||
if (cs->debug)
|
||
debugl1(cs, "hfcsx spurious 0x01 IRQ");
|
||
} else {
|
||
if (bcs->tx_skb) {
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_fifo(bcs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "fill_data %d blocked", bcs->channel);
|
||
} else {
|
||
if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_fifo(bcs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "fill_data %d blocked", bcs->channel);
|
||
} else {
|
||
hfcsx_sched_event(bcs, B_XMTBUFREADY);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if (val & 0x02) {
|
||
if (!(bcs = Sel_BCS(cs, 1))) {
|
||
if (cs->debug)
|
||
debugl1(cs, "hfcsx spurious 0x02 IRQ");
|
||
} else {
|
||
if (bcs->tx_skb) {
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_fifo(bcs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "fill_data %d blocked", bcs->channel);
|
||
} else {
|
||
if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_fifo(bcs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "fill_data %d blocked", bcs->channel);
|
||
} else {
|
||
hfcsx_sched_event(bcs, B_XMTBUFREADY);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if (val & 0x20) { /* receive dframe */
|
||
receive_dmsg(cs);
|
||
}
|
||
if (val & 0x04) { /* dframe transmitted */
|
||
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
|
||
del_timer(&cs->dbusytimer);
|
||
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
|
||
sched_event_D_sx(cs, D_CLEARBUSY);
|
||
if (cs->tx_skb) {
|
||
if (cs->tx_skb->len) {
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_dfifo(cs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else {
|
||
debugl1(cs, "hfcsx_fill_dfifo irq blocked");
|
||
}
|
||
goto afterXPR;
|
||
} else {
|
||
idev_kfree_skb(cs->tx_skb, FREE_WRITE);
|
||
cs->tx_cnt = 0;
|
||
cs->tx_skb = NULL;
|
||
}
|
||
}
|
||
if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
|
||
cs->tx_cnt = 0;
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_dfifo(cs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else {
|
||
debugl1(cs, "hfcsx_fill_dfifo irq blocked");
|
||
}
|
||
} else
|
||
sched_event_D_sx(cs, D_XMTBUFREADY);
|
||
}
|
||
afterXPR:
|
||
if (cs->hw.hfcsx.int_s1 && count--) {
|
||
val = cs->hw.hfcsx.int_s1;
|
||
cs->hw.hfcsx.int_s1 = 0;
|
||
if (cs->debug & L1_DEB_ISAC)
|
||
debugl1(cs, "HFC-SX irq %x loop %d", val, 15 - count);
|
||
} else
|
||
val = 0;
|
||
restore_flags(flags);
|
||
}
|
||
}
|
||
|
||
/********************************************************************/
|
||
/* timer callback for D-chan busy resolution. Currently no function */
|
||
/********************************************************************/
|
||
static void
|
||
hfcsx_dbusy_timer(struct IsdnCardState *cs)
|
||
{
|
||
#if 0
|
||
struct PStack *stptr;
|
||
if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
|
||
if (cs->debug)
|
||
debugl1(cs, "D-Channel Busy");
|
||
test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
|
||
stptr = cs->stlist;
|
||
|
||
while (stptr != NULL) {
|
||
stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
|
||
stptr = stptr->next;
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*************************************/
|
||
/* Layer 1 D-channel hardware access */
|
||
/*************************************/
|
||
static void
|
||
HFCSX_l1hw(struct PStack *st, int pr, void *arg)
|
||
{
|
||
struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
|
||
struct sk_buff *skb = arg;
|
||
int flags;
|
||
|
||
switch (pr) {
|
||
case (PH_DATA | REQUEST):
|
||
if (cs->debug & DEB_DLOG_HEX)
|
||
LogFrame(cs, skb->data, skb->len);
|
||
if (cs->debug & DEB_DLOG_VERBOSE)
|
||
dlogframe(cs, skb, 0);
|
||
if (cs->tx_skb) {
|
||
skb_queue_tail(&cs->sq, skb);
|
||
#ifdef L2FRAME_DEBUG /* psa */
|
||
if (cs->debug & L1_DEB_LAPD)
|
||
Logl2Frame(cs, skb, "PH_DATA Queued", 0);
|
||
#endif
|
||
} else {
|
||
cs->tx_skb = skb;
|
||
cs->tx_cnt = 0;
|
||
#ifdef L2FRAME_DEBUG /* psa */
|
||
if (cs->debug & L1_DEB_LAPD)
|
||
Logl2Frame(cs, skb, "PH_DATA", 0);
|
||
#endif
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_dfifo(cs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "hfcsx_fill_dfifo blocked");
|
||
|
||
}
|
||
break;
|
||
case (PH_PULL | INDICATION):
|
||
if (cs->tx_skb) {
|
||
if (cs->debug & L1_DEB_WARN)
|
||
debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
|
||
skb_queue_tail(&cs->sq, skb);
|
||
break;
|
||
}
|
||
if (cs->debug & DEB_DLOG_HEX)
|
||
LogFrame(cs, skb->data, skb->len);
|
||
if (cs->debug & DEB_DLOG_VERBOSE)
|
||
dlogframe(cs, skb, 0);
|
||
cs->tx_skb = skb;
|
||
cs->tx_cnt = 0;
|
||
#ifdef L2FRAME_DEBUG /* psa */
|
||
if (cs->debug & L1_DEB_LAPD)
|
||
Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
|
||
#endif
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_dfifo(cs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "hfcsx_fill_dfifo blocked");
|
||
break;
|
||
case (PH_PULL | REQUEST):
|
||
#ifdef L2FRAME_DEBUG /* psa */
|
||
if (cs->debug & L1_DEB_LAPD)
|
||
debugl1(cs, "-> PH_REQUEST_PULL");
|
||
#endif
|
||
if (!cs->tx_skb) {
|
||
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
|
||
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
|
||
} else
|
||
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
|
||
break;
|
||
case (HW_RESET | REQUEST):
|
||
Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 3); /* HFC ST 3 */
|
||
udelay(6);
|
||
Write_hfc(cs, HFCSX_STATES, 3); /* HFC ST 2 */
|
||
cs->hw.hfcsx.mst_m |= HFCSX_MASTER;
|
||
Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
|
||
Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION);
|
||
l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
|
||
break;
|
||
case (HW_ENABLE | REQUEST):
|
||
Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION);
|
||
break;
|
||
case (HW_DEACTIVATE | REQUEST):
|
||
cs->hw.hfcsx.mst_m &= ~HFCSX_MASTER;
|
||
Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
|
||
break;
|
||
case (HW_INFO3 | REQUEST):
|
||
cs->hw.hfcsx.mst_m |= HFCSX_MASTER;
|
||
Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
|
||
break;
|
||
case (HW_TESTLOOP | REQUEST):
|
||
switch ((int) arg) {
|
||
case (1):
|
||
Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* tx slot */
|
||
Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* rx slot */
|
||
save_flags(flags);
|
||
cli();
|
||
cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~7) | 1;
|
||
Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
|
||
restore_flags(flags);
|
||
break;
|
||
|
||
case (2):
|
||
Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* tx slot */
|
||
Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* rx slot */
|
||
save_flags(flags);
|
||
cli();
|
||
cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~0x38) | 0x08;
|
||
Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
|
||
restore_flags(flags);
|
||
break;
|
||
|
||
default:
|
||
if (cs->debug & L1_DEB_WARN)
|
||
debugl1(cs, "hfcsx_l1hw loop invalid %4x", (int) arg);
|
||
return;
|
||
}
|
||
save_flags(flags);
|
||
cli();
|
||
cs->hw.hfcsx.trm |= 0x80; /* enable IOM-loop */
|
||
Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
|
||
restore_flags(flags);
|
||
break;
|
||
default:
|
||
if (cs->debug & L1_DEB_WARN)
|
||
debugl1(cs, "hfcsx_l1hw unknown pr %4x", pr);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/***********************************************/
|
||
/* called during init setting l1 stack pointer */
|
||
/***********************************************/
|
||
void
|
||
setstack_hfcsx(struct PStack *st, struct IsdnCardState *cs)
|
||
{
|
||
st->l1.l1hw = HFCSX_l1hw;
|
||
}
|
||
|
||
/**************************************/
|
||
/* send B-channel data if not blocked */
|
||
/**************************************/
|
||
static void
|
||
hfcsx_send_data(struct BCState *bcs)
|
||
{
|
||
struct IsdnCardState *cs = bcs->cs;
|
||
|
||
if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
||
hfcsx_fill_fifo(bcs);
|
||
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
||
} else
|
||
debugl1(cs, "send_data %d blocked", bcs->channel);
|
||
}
|
||
|
||
/***************************************************************/
|
||
/* activate/deactivate hardware for selected channels and mode */
|
||
/***************************************************************/
|
||
void
|
||
mode_hfcsx(struct BCState *bcs, int mode, int bc)
|
||
{
|
||
struct IsdnCardState *cs = bcs->cs;
|
||
int flags, fifo2;
|
||
|
||
if (cs->debug & L1_DEB_HSCX)
|
||
debugl1(cs, "HFCSX bchannel mode %d bchan %d/%d",
|
||
mode, bc, bcs->channel);
|
||
bcs->mode = mode;
|
||
bcs->channel = bc;
|
||
fifo2 = bc;
|
||
save_flags(flags);
|
||
cli();
|
||
if (cs->chanlimit > 1) {
|
||
cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */
|
||
cs->hw.hfcsx.sctrl_e &= ~0x80;
|
||
} else {
|
||
if (bc) {
|
||
if (mode != L1_MODE_NULL) {
|
||
cs->hw.hfcsx.bswapped = 1; /* B1 and B2 exchanged */
|
||
cs->hw.hfcsx.sctrl_e |= 0x80;
|
||
} else {
|
||
cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */
|
||
cs->hw.hfcsx.sctrl_e &= ~0x80;
|
||
}
|
||
fifo2 = 0;
|
||
} else {
|
||
cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */
|
||
cs->hw.hfcsx.sctrl_e &= ~0x80;
|
||
}
|
||
}
|
||
switch (mode) {
|
||
case (L1_MODE_NULL):
|
||
if (bc) {
|
||
cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA;
|
||
} else {
|
||
cs->hw.hfcsx.sctrl &= ~SCTRL_B1_ENA;
|
||
cs->hw.hfcsx.sctrl_r &= ~SCTRL_B1_ENA;
|
||
}
|
||
if (fifo2) {
|
||
cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
|
||
} else {
|
||
cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
|
||
}
|
||
break;
|
||
case (L1_MODE_TRANS):
|
||
if (bc) {
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
|
||
} else {
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
|
||
}
|
||
if (fifo2) {
|
||
cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
|
||
cs->hw.hfcsx.ctmt |= 2;
|
||
cs->hw.hfcsx.conn &= ~0x18;
|
||
} else {
|
||
cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
|
||
cs->hw.hfcsx.ctmt |= 1;
|
||
cs->hw.hfcsx.conn &= ~0x03;
|
||
}
|
||
break;
|
||
case (L1_MODE_HDLC):
|
||
if (bc) {
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
|
||
} else {
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
|
||
}
|
||
if (fifo2) {
|
||
cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
|
||
cs->hw.hfcsx.ctmt &= ~2;
|
||
cs->hw.hfcsx.conn &= ~0x18;
|
||
} else {
|
||
cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
|
||
cs->hw.hfcsx.ctmt &= ~1;
|
||
cs->hw.hfcsx.conn &= ~0x03;
|
||
}
|
||
break;
|
||
case (L1_MODE_EXTRN):
|
||
if (bc) {
|
||
cs->hw.hfcsx.conn |= 0x10;
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
|
||
cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
|
||
} else {
|
||
cs->hw.hfcsx.conn |= 0x02;
|
||
cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
|
||
cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
|
||
cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
|
||
}
|
||
break;
|
||
}
|
||
Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e);
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
|
||
Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
|
||
Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
|
||
Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
|
||
if (mode != L1_MODE_EXTRN) {
|
||
reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX);
|
||
reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX);
|
||
}
|
||
restore_flags(flags);
|
||
}
|
||
|
||
/******************************/
|
||
/* Layer2 -> Layer 1 Transfer */
|
||
/******************************/
|
||
static void
|
||
hfcsx_l2l1(struct PStack *st, int pr, void *arg)
|
||
{
|
||
struct sk_buff *skb = arg;
|
||
long flags;
|
||
|
||
switch (pr) {
|
||
case (PH_DATA | REQUEST):
|
||
save_flags(flags);
|
||
cli();
|
||
if (st->l1.bcs->tx_skb) {
|
||
skb_queue_tail(&st->l1.bcs->squeue, skb);
|
||
restore_flags(flags);
|
||
} else {
|
||
st->l1.bcs->tx_skb = skb;
|
||
/* test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
|
||
*/ st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
|
||
restore_flags(flags);
|
||
}
|
||
break;
|
||
case (PH_PULL | INDICATION):
|
||
if (st->l1.bcs->tx_skb) {
|
||
printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
|
||
break;
|
||
}
|
||
save_flags(flags);
|
||
cli();
|
||
/* test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
|
||
*/ st->l1.bcs->tx_skb = skb;
|
||
st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
|
||
restore_flags(flags);
|
||
break;
|
||
case (PH_PULL | REQUEST):
|
||
if (!st->l1.bcs->tx_skb) {
|
||
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
|
||
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
|
||
} else
|
||
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
|
||
break;
|
||
case (PH_ACTIVATE | REQUEST):
|
||
test_and_set_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
|
||
mode_hfcsx(st->l1.bcs, st->l1.mode, st->l1.bc);
|
||
l1_msg_b(st, pr, arg);
|
||
break;
|
||
case (PH_DEACTIVATE | REQUEST):
|
||
l1_msg_b(st, pr, arg);
|
||
break;
|
||
case (PH_DEACTIVATE | CONFIRM):
|
||
test_and_clear_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
|
||
test_and_clear_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
|
||
mode_hfcsx(st->l1.bcs, 0, st->l1.bc);
|
||
st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/******************************************/
|
||
/* deactivate B-channel access and queues */
|
||
/******************************************/
|
||
static void
|
||
close_hfcsx(struct BCState *bcs)
|
||
{
|
||
mode_hfcsx(bcs, 0, bcs->channel);
|
||
if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
|
||
discard_queue(&bcs->rqueue);
|
||
discard_queue(&bcs->squeue);
|
||
if (bcs->tx_skb) {
|
||
idev_kfree_skb(bcs->tx_skb, FREE_WRITE);
|
||
bcs->tx_skb = NULL;
|
||
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*************************************/
|
||
/* init B-channel queues and control */
|
||
/*************************************/
|
||
static int
|
||
open_hfcsxstate(struct IsdnCardState *cs, struct BCState *bcs)
|
||
{
|
||
if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
|
||
skb_queue_head_init(&bcs->rqueue);
|
||
skb_queue_head_init(&bcs->squeue);
|
||
}
|
||
bcs->tx_skb = NULL;
|
||
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
|
||
bcs->event = 0;
|
||
bcs->tx_cnt = 0;
|
||
return (0);
|
||
}
|
||
|
||
/*********************************/
|
||
/* inits the stack for B-channel */
|
||
/*********************************/
|
||
static int
|
||
setstack_2b(struct PStack *st, struct BCState *bcs)
|
||
{
|
||
bcs->channel = st->l1.bc;
|
||
if (open_hfcsxstate(st->l1.hardware, bcs))
|
||
return (-1);
|
||
st->l1.bcs = bcs;
|
||
st->l2.l2l1 = hfcsx_l2l1;
|
||
setstack_manager(st);
|
||
bcs->st = st;
|
||
setstack_l1_B(st);
|
||
return (0);
|
||
}
|
||
|
||
/***************************/
|
||
/* handle L1 state changes */
|
||
/***************************/
|
||
static void
|
||
hfcsx_bh(struct IsdnCardState *cs)
|
||
{
|
||
int flags;
|
||
/* struct PStack *stptr;
|
||
*/
|
||
if (!cs)
|
||
return;
|
||
#if 0
|
||
if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
|
||
if (cs->debug)
|
||
debugl1(cs, "D-Channel Busy cleared");
|
||
stptr = cs->stlist;
|
||
while (stptr != NULL) {
|
||
stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
|
||
stptr = stptr->next;
|
||
}
|
||
}
|
||
#endif
|
||
if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
|
||
if (!cs->hw.hfcsx.nt_mode)
|
||
switch (cs->dc.hfcsx.ph_state) {
|
||
case (0):
|
||
l1_msg(cs, HW_RESET | INDICATION, NULL);
|
||
break;
|
||
case (3):
|
||
l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
|
||
break;
|
||
case (8):
|
||
l1_msg(cs, HW_RSYNC | INDICATION, NULL);
|
||
break;
|
||
case (6):
|
||
l1_msg(cs, HW_INFO2 | INDICATION, NULL);
|
||
break;
|
||
case (7):
|
||
l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
|
||
break;
|
||
default:
|
||
break;
|
||
} else {
|
||
switch (cs->dc.hfcsx.ph_state) {
|
||
case (2):
|
||
save_flags(flags);
|
||
cli();
|
||
if (cs->hw.hfcsx.nt_timer < 0) {
|
||
cs->hw.hfcsx.nt_timer = 0;
|
||
cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
/* Clear already pending ints */
|
||
if (Read_hfc(cs, HFCSX_INT_S1));
|
||
|
||
Write_hfc(cs, HFCSX_STATES, 4 | HFCSX_LOAD_STATE);
|
||
udelay(10);
|
||
Write_hfc(cs, HFCSX_STATES, 4);
|
||
cs->dc.hfcsx.ph_state = 4;
|
||
} else {
|
||
cs->hw.hfcsx.int_m1 |= HFCSX_INTS_TIMER;
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
cs->hw.hfcsx.ctmt &= ~HFCSX_AUTO_TIMER;
|
||
cs->hw.hfcsx.ctmt |= HFCSX_TIM3_125;
|
||
Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
|
||
Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
|
||
cs->hw.hfcsx.nt_timer = NT_T1_COUNT;
|
||
Write_hfc(cs, HFCSX_STATES, 2 | HFCSX_NT_G2_G3); /* allow G2 -> G3 transition */
|
||
}
|
||
restore_flags(flags);
|
||
break;
|
||
case (1):
|
||
case (3):
|
||
case (4):
|
||
save_flags(flags);
|
||
cli();
|
||
cs->hw.hfcsx.nt_timer = 0;
|
||
cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
restore_flags(flags);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
|
||
DChannel_proc_rcv(cs);
|
||
if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
|
||
DChannel_proc_xmt(cs);
|
||
}
|
||
|
||
|
||
/********************************/
|
||
/* called for card init message */
|
||
/********************************/
|
||
__initfunc(void
|
||
inithfcsx(struct IsdnCardState *cs))
|
||
{
|
||
cs->setstack_d = setstack_hfcsx;
|
||
cs->dbusytimer.function = (void *) hfcsx_dbusy_timer;
|
||
cs->dbusytimer.data = (long) cs;
|
||
init_timer(&cs->dbusytimer);
|
||
cs->tqueue.routine = (void *) (void *) hfcsx_bh;
|
||
cs->BC_Send_Data = &hfcsx_send_data;
|
||
cs->bcs[0].BC_SetStack = setstack_2b;
|
||
cs->bcs[1].BC_SetStack = setstack_2b;
|
||
cs->bcs[0].BC_Close = close_hfcsx;
|
||
cs->bcs[1].BC_Close = close_hfcsx;
|
||
mode_hfcsx(cs->bcs, 0, 0);
|
||
mode_hfcsx(cs->bcs + 1, 0, 1);
|
||
}
|
||
|
||
|
||
|
||
/*******************************************/
|
||
/* handle card messages from control layer */
|
||
/*******************************************/
|
||
static int
|
||
hfcsx_card_msg(struct IsdnCardState *cs, int mt, void *arg)
|
||
{
|
||
long flags;
|
||
|
||
if (cs->debug & L1_DEB_ISAC)
|
||
debugl1(cs, "HFCSX: card_msg %x", mt);
|
||
switch (mt) {
|
||
case CARD_RESET:
|
||
reset_hfcsx(cs);
|
||
return (0);
|
||
case CARD_RELEASE:
|
||
release_io_hfcsx(cs);
|
||
return (0);
|
||
case CARD_INIT:
|
||
inithfcsx(cs);
|
||
save_flags(flags);
|
||
sti();
|
||
set_current_state(TASK_INTERRUPTIBLE);
|
||
schedule_timeout((80 * HZ) / 1000); /* Timeout 80ms */
|
||
/* now switch timer interrupt off */
|
||
cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
/* reinit mode reg */
|
||
Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
|
||
restore_flags(flags);
|
||
return (0);
|
||
case CARD_TEST:
|
||
return (0);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
|
||
|
||
__initfunc(int
|
||
setup_hfcsx(struct IsdnCard *card))
|
||
{
|
||
struct IsdnCardState *cs = card->cs;
|
||
char tmp[64];
|
||
int flags;
|
||
|
||
strcpy(tmp, hfcsx_revision);
|
||
printk(KERN_INFO "HiSax: HFC-SX driver Rev. %s\n", HiSax_getrev(tmp));
|
||
cs->hw.hfcsx.base = card->para[1] & 0xfffe;
|
||
cs->irq = card->para[0];
|
||
cs->hw.hfcsx.int_s1 = 0;
|
||
cs->dc.hfcsx.ph_state = 0;
|
||
cs->hw.hfcsx.fifo = 255;
|
||
if (cs->typ == ISDN_CTYPE_HFC_SX) {
|
||
if ((!cs->hw.hfcsx.base) ||
|
||
check_region((cs->hw.hfcsx.base), 2)) {
|
||
printk(KERN_WARNING
|
||
"HiSax: HFC-SX io-base 0x%x already in use\n",
|
||
cs->hw.hfcsx.base);
|
||
return(0);
|
||
} else {
|
||
request_region(cs->hw.hfcsx.base, 2, "HFCSX isdn");
|
||
}
|
||
byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.base & 0xFF);
|
||
byteout(cs->hw.hfcsx.base + 1,
|
||
((cs->hw.hfcsx.base >> 8) & 3) | 0x54);
|
||
udelay(10);
|
||
cs->hw.hfcsx.chip = Read_hfc(cs,HFCSX_CHIP_ID);
|
||
switch (cs->hw.hfcsx.chip >> 4) {
|
||
case 1:
|
||
tmp[0] ='+';
|
||
break;
|
||
case 9:
|
||
tmp[0] ='P';
|
||
break;
|
||
default:
|
||
printk(KERN_WARNING
|
||
"HFC-SX: invalid chip id 0x%x\n",
|
||
cs->hw.hfcsx.chip >> 4);
|
||
release_region(cs->hw.hfcsx.base, 2);
|
||
return(0);
|
||
}
|
||
if (!ccd_sp_irqtab[cs->irq & 0xF]) {
|
||
printk(KERN_WARNING
|
||
"HFC_SX: invalid irq %d specified\n",cs->irq & 0xF);
|
||
release_region(cs->hw.hfcsx.base, 2);
|
||
return(0);
|
||
}
|
||
save_flags(flags);
|
||
cli();
|
||
if (!(cs->hw.hfcsx.extra = (void *)
|
||
kmalloc(sizeof(struct hfcsx_extra), GFP_ATOMIC))) {
|
||
restore_flags(flags);
|
||
release_region(cs->hw.hfcsx.base, 2);
|
||
printk(KERN_WARNING "HFC-SX: unable to allocate memory\n");
|
||
return(0);
|
||
}
|
||
restore_flags(flags);
|
||
|
||
printk(KERN_INFO
|
||
"HFC-S%c chip detected at base 0x%x IRQ %d HZ %d\n",
|
||
tmp[0], (u_int) cs->hw.hfcsx.base,
|
||
cs->irq, HZ);
|
||
cs->hw.hfcsx.int_m2 = 0; /* disable alle interrupts */
|
||
cs->hw.hfcsx.int_m1 = 0;
|
||
Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
|
||
Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
|
||
} else
|
||
return (0); /* no valid card type */
|
||
|
||
cs->readisac = NULL;
|
||
cs->writeisac = NULL;
|
||
cs->readisacfifo = NULL;
|
||
cs->writeisacfifo = NULL;
|
||
cs->BC_Read_Reg = NULL;
|
||
cs->BC_Write_Reg = NULL;
|
||
cs->irq_func = &hfcsx_interrupt;
|
||
|
||
cs->hw.hfcsx.timer.function = (void *) hfcsx_Timer;
|
||
cs->hw.hfcsx.timer.data = (long) cs;
|
||
cs->hw.hfcsx.b_fifo_size = 0; /* fifo size still unknown */
|
||
cs->hw.hfcsx.cirm = ccd_sp_irqtab[cs->irq & 0xF]; /* RAM not evaluated */
|
||
init_timer(&cs->hw.hfcsx.timer);
|
||
|
||
reset_hfcsx(cs);
|
||
cs->cardmsg = &hfcsx_card_msg;
|
||
cs->auxcmd = &hfcsx_auxcmd;
|
||
return (1);
|
||
}
|
||
|
||
|
||
|
||
|