2005-04-16 22:20:36 +00:00
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/* $Id: isac.c,v 1.31.2.3 2004/01/13 14:31:25 keil Exp $
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*
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* ISAC specific routines
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*
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* Author Karsten Keil
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* Copyright by Karsten Keil <keil@isdn4linux.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* For changes and modifications please read
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* Documentation/isdn/HiSax.cert
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*
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*/
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#include "hisax.h"
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#include "isac.h"
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#include "arcofi.h"
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#include "isdnl1.h"
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#define DBUSY_TIMER_VALUE 80
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#define ARCOFI_USE 1
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static char *ISACVer[] __devinitdata =
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{"2086/2186 V1.1", "2085 B1", "2085 B2",
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"2085 V2.3"};
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void
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ISACVersion(struct IsdnCardState *cs, char *s)
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{
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int val;
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val = cs->readisac(cs, ISAC_RBCH);
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printk(KERN_INFO "%s ISAC version (%x): %s\n", s, val, ISACVer[(val >> 5) & 3]);
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}
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static void
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ph_command(struct IsdnCardState *cs, unsigned int command)
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{
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ph_command %x", command);
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cs->writeisac(cs, ISAC_CIX0, (command << 2) | 3);
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}
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static void
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isac_new_ph(struct IsdnCardState *cs)
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{
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switch (cs->dc.isac.ph_state) {
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case (ISAC_IND_RS):
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case (ISAC_IND_EI):
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ph_command(cs, ISAC_CMD_DUI);
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l1_msg(cs, HW_RESET | INDICATION, NULL);
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break;
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case (ISAC_IND_DID):
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l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
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break;
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case (ISAC_IND_DR):
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l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
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break;
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case (ISAC_IND_PU):
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l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
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break;
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case (ISAC_IND_RSY):
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l1_msg(cs, HW_RSYNC | INDICATION, NULL);
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break;
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case (ISAC_IND_ARD):
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l1_msg(cs, HW_INFO2 | INDICATION, NULL);
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break;
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case (ISAC_IND_AI8):
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l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
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break;
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case (ISAC_IND_AI10):
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l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
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break;
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default:
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break;
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}
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}
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static void
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2006-11-22 14:57:56 +00:00
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isac_bh(struct work_struct *work)
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2005-04-16 22:20:36 +00:00
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{
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2006-11-22 14:57:56 +00:00
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struct IsdnCardState *cs =
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container_of(work, struct IsdnCardState, tqueue);
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2005-04-16 22:20:36 +00:00
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struct PStack *stptr;
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if (!cs)
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return;
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if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
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if (cs->debug)
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debugl1(cs, "D-Channel Busy cleared");
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stptr = cs->stlist;
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while (stptr != NULL) {
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stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
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stptr = stptr->next;
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}
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}
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if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
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isac_new_ph(cs);
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if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
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DChannel_proc_rcv(cs);
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if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
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DChannel_proc_xmt(cs);
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#if ARCOFI_USE
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if (!test_bit(HW_ARCOFI, &cs->HW_Flags))
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return;
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if (test_and_clear_bit(D_RX_MON1, &cs->event))
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arcofi_fsm(cs, ARCOFI_RX_END, NULL);
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if (test_and_clear_bit(D_TX_MON1, &cs->event))
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arcofi_fsm(cs, ARCOFI_TX_END, NULL);
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#endif
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}
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2005-06-25 21:59:18 +00:00
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static void
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2005-04-16 22:20:36 +00:00
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isac_empty_fifo(struct IsdnCardState *cs, int count)
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{
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u_char *ptr;
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if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
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debugl1(cs, "isac_empty_fifo");
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if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "isac_empty_fifo overrun %d",
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cs->rcvidx + count);
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cs->writeisac(cs, ISAC_CMDR, 0x80);
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cs->rcvidx = 0;
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return;
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}
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ptr = cs->rcvbuf + cs->rcvidx;
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cs->rcvidx += count;
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cs->readisacfifo(cs, ptr, count);
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cs->writeisac(cs, ISAC_CMDR, 0x80);
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if (cs->debug & L1_DEB_ISAC_FIFO) {
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char *t = cs->dlog;
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t += sprintf(t, "isac_empty_fifo cnt %d", count);
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QuickHex(t, ptr, count);
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debugl1(cs, cs->dlog);
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}
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}
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static void
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isac_fill_fifo(struct IsdnCardState *cs)
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{
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int count, more;
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u_char *ptr;
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if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
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debugl1(cs, "isac_fill_fifo");
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if (!cs->tx_skb)
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return;
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count = cs->tx_skb->len;
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if (count <= 0)
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return;
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more = 0;
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if (count > 32) {
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more = !0;
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count = 32;
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}
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ptr = cs->tx_skb->data;
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skb_pull(cs->tx_skb, count);
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cs->tx_cnt += count;
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cs->writeisacfifo(cs, ptr, count);
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cs->writeisac(cs, ISAC_CMDR, more ? 0x8 : 0xa);
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if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
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debugl1(cs, "isac_fill_fifo dbusytimer running");
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del_timer(&cs->dbusytimer);
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}
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init_timer(&cs->dbusytimer);
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cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000);
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add_timer(&cs->dbusytimer);
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if (cs->debug & L1_DEB_ISAC_FIFO) {
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char *t = cs->dlog;
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t += sprintf(t, "isac_fill_fifo cnt %d", count);
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QuickHex(t, ptr, count);
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debugl1(cs, cs->dlog);
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}
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}
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void
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isac_interrupt(struct IsdnCardState *cs, u_char val)
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{
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u_char exval, v1;
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struct sk_buff *skb;
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unsigned int count;
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC interrupt %x", val);
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if (val & 0x80) { /* RME */
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exval = cs->readisac(cs, ISAC_RSTA);
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if ((exval & 0x70) != 0x20) {
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if (exval & 0x40) {
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC RDO");
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#ifdef ERROR_STATISTIC
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cs->err_rx++;
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#endif
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}
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if (!(exval & 0x20)) {
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC CRC error");
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#ifdef ERROR_STATISTIC
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cs->err_crc++;
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#endif
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}
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cs->writeisac(cs, ISAC_CMDR, 0x80);
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} else {
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count = cs->readisac(cs, ISAC_RBCL) & 0x1f;
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if (count == 0)
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count = 32;
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isac_empty_fifo(cs, count);
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if ((count = cs->rcvidx) > 0) {
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cs->rcvidx = 0;
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if (!(skb = alloc_skb(count, GFP_ATOMIC)))
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printk(KERN_WARNING "HiSax: D receive out of memory\n");
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else {
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memcpy(skb_put(skb, count), cs->rcvbuf, count);
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skb_queue_tail(&cs->rq, skb);
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}
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}
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}
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cs->rcvidx = 0;
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schedule_event(cs, D_RCVBUFREADY);
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}
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if (val & 0x40) { /* RPF */
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isac_empty_fifo(cs, 32);
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}
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if (val & 0x20) { /* RSC */
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/* never */
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC RSC interrupt");
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}
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if (val & 0x10) { /* XPR */
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if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
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del_timer(&cs->dbusytimer);
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if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
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schedule_event(cs, D_CLEARBUSY);
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if (cs->tx_skb) {
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if (cs->tx_skb->len) {
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isac_fill_fifo(cs);
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goto afterXPR;
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} else {
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dev_kfree_skb_irq(cs->tx_skb);
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cs->tx_cnt = 0;
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cs->tx_skb = NULL;
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}
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}
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if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
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cs->tx_cnt = 0;
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isac_fill_fifo(cs);
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} else
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schedule_event(cs, D_XMTBUFREADY);
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}
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afterXPR:
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if (val & 0x04) { /* CISQ */
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exval = cs->readisac(cs, ISAC_CIR0);
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC CIR0 %02X", exval );
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if (exval & 2) {
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cs->dc.isac.ph_state = (exval >> 2) & 0xf;
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ph_state change %x", cs->dc.isac.ph_state);
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schedule_event(cs, D_L1STATECHANGE);
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}
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if (exval & 1) {
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exval = cs->readisac(cs, ISAC_CIR1);
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC CIR1 %02X", exval );
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}
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}
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if (val & 0x02) { /* SIN */
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/* never */
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC SIN interrupt");
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}
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if (val & 0x01) { /* EXI */
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exval = cs->readisac(cs, ISAC_EXIR);
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC EXIR %02x", exval);
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if (exval & 0x80) { /* XMR */
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debugl1(cs, "ISAC XMR");
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printk(KERN_WARNING "HiSax: ISAC XMR\n");
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}
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if (exval & 0x40) { /* XDU */
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debugl1(cs, "ISAC XDU");
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printk(KERN_WARNING "HiSax: ISAC XDU\n");
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#ifdef ERROR_STATISTIC
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cs->err_tx++;
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#endif
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if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
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del_timer(&cs->dbusytimer);
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if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
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schedule_event(cs, D_CLEARBUSY);
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if (cs->tx_skb) { /* Restart frame */
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skb_push(cs->tx_skb, cs->tx_cnt);
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cs->tx_cnt = 0;
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isac_fill_fifo(cs);
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} else {
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printk(KERN_WARNING "HiSax: ISAC XDU no skb\n");
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debugl1(cs, "ISAC XDU no skb");
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}
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}
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if (exval & 0x04) { /* MOS */
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v1 = cs->readisac(cs, ISAC_MOSR);
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if (cs->debug & L1_DEB_MONITOR)
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debugl1(cs, "ISAC MOSR %02x", v1);
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#if ARCOFI_USE
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if (v1 & 0x08) {
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if (!cs->dc.isac.mon_rx) {
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if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) {
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC MON RX out of memory!");
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cs->dc.isac.mocr &= 0xf0;
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cs->dc.isac.mocr |= 0x0a;
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cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
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goto afterMONR0;
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} else
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cs->dc.isac.mon_rxp = 0;
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}
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if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) {
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cs->dc.isac.mocr &= 0xf0;
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cs->dc.isac.mocr |= 0x0a;
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cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
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cs->dc.isac.mon_rxp = 0;
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if (cs->debug & L1_DEB_WARN)
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debugl1(cs, "ISAC MON RX overflow!");
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goto afterMONR0;
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}
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cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR0);
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if (cs->debug & L1_DEB_MONITOR)
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|
|
debugl1(cs, "ISAC MOR0 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]);
|
|
|
|
if (cs->dc.isac.mon_rxp == 1) {
|
|
|
|
cs->dc.isac.mocr |= 0x04;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
afterMONR0:
|
|
|
|
if (v1 & 0x80) {
|
|
|
|
if (!cs->dc.isac.mon_rx) {
|
|
|
|
if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) {
|
|
|
|
if (cs->debug & L1_DEB_WARN)
|
|
|
|
debugl1(cs, "ISAC MON RX out of memory!");
|
|
|
|
cs->dc.isac.mocr &= 0x0f;
|
|
|
|
cs->dc.isac.mocr |= 0xa0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
goto afterMONR1;
|
|
|
|
} else
|
|
|
|
cs->dc.isac.mon_rxp = 0;
|
|
|
|
}
|
|
|
|
if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) {
|
|
|
|
cs->dc.isac.mocr &= 0x0f;
|
|
|
|
cs->dc.isac.mocr |= 0xa0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
cs->dc.isac.mon_rxp = 0;
|
|
|
|
if (cs->debug & L1_DEB_WARN)
|
|
|
|
debugl1(cs, "ISAC MON RX overflow!");
|
|
|
|
goto afterMONR1;
|
|
|
|
}
|
|
|
|
cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR1);
|
|
|
|
if (cs->debug & L1_DEB_MONITOR)
|
|
|
|
debugl1(cs, "ISAC MOR1 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]);
|
|
|
|
cs->dc.isac.mocr |= 0x40;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
}
|
|
|
|
afterMONR1:
|
|
|
|
if (v1 & 0x04) {
|
|
|
|
cs->dc.isac.mocr &= 0xf0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
cs->dc.isac.mocr |= 0x0a;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
schedule_event(cs, D_RX_MON0);
|
|
|
|
}
|
|
|
|
if (v1 & 0x40) {
|
|
|
|
cs->dc.isac.mocr &= 0x0f;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
cs->dc.isac.mocr |= 0xa0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
schedule_event(cs, D_RX_MON1);
|
|
|
|
}
|
|
|
|
if (v1 & 0x02) {
|
|
|
|
if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc &&
|
|
|
|
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) &&
|
|
|
|
!(v1 & 0x08))) {
|
|
|
|
cs->dc.isac.mocr &= 0xf0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
cs->dc.isac.mocr |= 0x0a;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
if (cs->dc.isac.mon_txc &&
|
|
|
|
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc))
|
|
|
|
schedule_event(cs, D_TX_MON0);
|
|
|
|
goto AfterMOX0;
|
|
|
|
}
|
|
|
|
if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) {
|
|
|
|
schedule_event(cs, D_TX_MON0);
|
|
|
|
goto AfterMOX0;
|
|
|
|
}
|
|
|
|
cs->writeisac(cs, ISAC_MOX0,
|
|
|
|
cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
|
|
|
|
if (cs->debug & L1_DEB_MONITOR)
|
|
|
|
debugl1(cs, "ISAC %02x -> MOX0", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]);
|
|
|
|
}
|
|
|
|
AfterMOX0:
|
|
|
|
if (v1 & 0x20) {
|
|
|
|
if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc &&
|
|
|
|
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) &&
|
|
|
|
!(v1 & 0x80))) {
|
|
|
|
cs->dc.isac.mocr &= 0x0f;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
cs->dc.isac.mocr |= 0xa0;
|
|
|
|
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
|
|
|
|
if (cs->dc.isac.mon_txc &&
|
|
|
|
(cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc))
|
|
|
|
schedule_event(cs, D_TX_MON1);
|
|
|
|
goto AfterMOX1;
|
|
|
|
}
|
|
|
|
if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) {
|
|
|
|
schedule_event(cs, D_TX_MON1);
|
|
|
|
goto AfterMOX1;
|
|
|
|
}
|
|
|
|
cs->writeisac(cs, ISAC_MOX1,
|
|
|
|
cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
|
|
|
|
if (cs->debug & L1_DEB_MONITOR)
|
|
|
|
debugl1(cs, "ISAC %02x -> MOX1", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]);
|
|
|
|
}
|
|
|
|
AfterMOX1:;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ISAC_l1hw(struct PStack *st, int pr, void *arg)
|
|
|
|
{
|
|
|
|
struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
|
|
|
|
struct sk_buff *skb = arg;
|
|
|
|
u_long flags;
|
|
|
|
int val;
|
|
|
|
|
|
|
|
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);
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
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
|
|
|
|
isac_fill_fifo(cs);
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
break;
|
|
|
|
case (PH_PULL |INDICATION):
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
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);
|
|
|
|
} else {
|
|
|
|
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
|
|
|
|
isac_fill_fifo(cs);
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
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):
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
if ((cs->dc.isac.ph_state == ISAC_IND_EI) ||
|
|
|
|
(cs->dc.isac.ph_state == ISAC_IND_DR) ||
|
|
|
|
(cs->dc.isac.ph_state == ISAC_IND_RS))
|
|
|
|
ph_command(cs, ISAC_CMD_TIM);
|
|
|
|
else
|
|
|
|
ph_command(cs, ISAC_CMD_RS);
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
break;
|
|
|
|
case (HW_ENABLE | REQUEST):
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
ph_command(cs, ISAC_CMD_TIM);
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
break;
|
|
|
|
case (HW_INFO3 | REQUEST):
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
ph_command(cs, ISAC_CMD_AR8);
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
break;
|
|
|
|
case (HW_TESTLOOP | REQUEST):
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
|
|
val = 0;
|
|
|
|
if (1 & (long) arg)
|
|
|
|
val |= 0x0c;
|
|
|
|
if (2 & (long) arg)
|
|
|
|
val |= 0x3;
|
|
|
|
if (test_bit(HW_IOM1, &cs->HW_Flags)) {
|
|
|
|
/* IOM 1 Mode */
|
|
|
|
if (!val) {
|
|
|
|
cs->writeisac(cs, ISAC_SPCR, 0xa);
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0x2);
|
|
|
|
} else {
|
|
|
|
cs->writeisac(cs, ISAC_SPCR, val);
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0xa);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* IOM 2 Mode */
|
|
|
|
cs->writeisac(cs, ISAC_SPCR, val);
|
|
|
|
if (val)
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0x8);
|
|
|
|
else
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0x0);
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
|
|
break;
|
|
|
|
case (HW_DEACTIVATE | RESPONSE):
|
|
|
|
skb_queue_purge(&cs->rq);
|
|
|
|
skb_queue_purge(&cs->sq);
|
|
|
|
if (cs->tx_skb) {
|
|
|
|
dev_kfree_skb_any(cs->tx_skb);
|
|
|
|
cs->tx_skb = NULL;
|
|
|
|
}
|
|
|
|
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))
|
|
|
|
schedule_event(cs, D_CLEARBUSY);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (cs->debug & L1_DEB_WARN)
|
|
|
|
debugl1(cs, "isac_l1hw unknown %04x", pr);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-06-25 21:59:18 +00:00
|
|
|
static void
|
2005-04-16 22:20:36 +00:00
|
|
|
setstack_isac(struct PStack *st, struct IsdnCardState *cs)
|
|
|
|
{
|
|
|
|
st->l1.l1hw = ISAC_l1hw;
|
|
|
|
}
|
|
|
|
|
2005-06-25 21:59:18 +00:00
|
|
|
static void
|
2005-11-07 09:01:29 +00:00
|
|
|
DC_Close_isac(struct IsdnCardState *cs)
|
|
|
|
{
|
|
|
|
kfree(cs->dc.isac.mon_rx);
|
|
|
|
cs->dc.isac.mon_rx = NULL;
|
|
|
|
kfree(cs->dc.isac.mon_tx);
|
|
|
|
cs->dc.isac.mon_tx = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dbusy_timer_handler(struct IsdnCardState *cs)
|
|
|
|
{
|
|
|
|
struct PStack *stptr;
|
|
|
|
int rbch, star;
|
|
|
|
|
|
|
|
if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
|
|
|
|
rbch = cs->readisac(cs, ISAC_RBCH);
|
|
|
|
star = cs->readisac(cs, ISAC_STAR);
|
|
|
|
if (cs->debug)
|
|
|
|
debugl1(cs, "D-Channel Busy RBCH %02x STAR %02x",
|
|
|
|
rbch, star);
|
|
|
|
if (rbch & ISAC_RBCH_XAC) { /* 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;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* discard frame; reset transceiver */
|
|
|
|
test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
|
|
|
|
if (cs->tx_skb) {
|
|
|
|
dev_kfree_skb_any(cs->tx_skb);
|
|
|
|
cs->tx_cnt = 0;
|
|
|
|
cs->tx_skb = NULL;
|
|
|
|
} else {
|
|
|
|
printk(KERN_WARNING "HiSax: ISAC D-Channel Busy no skb\n");
|
|
|
|
debugl1(cs, "D-Channel Busy no skb");
|
|
|
|
}
|
|
|
|
cs->writeisac(cs, ISAC_CMDR, 0x01); /* Transmitter reset */
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 13:55:46 +00:00
|
|
|
cs->irq_func(cs->irq, cs);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void __devinit
|
|
|
|
initisac(struct IsdnCardState *cs)
|
|
|
|
{
|
|
|
|
cs->setstack_d = setstack_isac;
|
|
|
|
cs->DC_Close = DC_Close_isac;
|
|
|
|
cs->dc.isac.mon_tx = NULL;
|
|
|
|
cs->dc.isac.mon_rx = NULL;
|
|
|
|
cs->writeisac(cs, ISAC_MASK, 0xff);
|
|
|
|
cs->dc.isac.mocr = 0xaa;
|
|
|
|
if (test_bit(HW_IOM1, &cs->HW_Flags)) {
|
|
|
|
/* IOM 1 Mode */
|
|
|
|
cs->writeisac(cs, ISAC_ADF2, 0x0);
|
|
|
|
cs->writeisac(cs, ISAC_SPCR, 0xa);
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0x2);
|
|
|
|
cs->writeisac(cs, ISAC_STCR, 0x70);
|
|
|
|
cs->writeisac(cs, ISAC_MODE, 0xc9);
|
|
|
|
} else {
|
|
|
|
/* IOM 2 Mode */
|
|
|
|
if (!cs->dc.isac.adf2)
|
|
|
|
cs->dc.isac.adf2 = 0x80;
|
|
|
|
cs->writeisac(cs, ISAC_ADF2, cs->dc.isac.adf2);
|
|
|
|
cs->writeisac(cs, ISAC_SQXR, 0x2f);
|
|
|
|
cs->writeisac(cs, ISAC_SPCR, 0x00);
|
|
|
|
cs->writeisac(cs, ISAC_STCR, 0x70);
|
|
|
|
cs->writeisac(cs, ISAC_MODE, 0xc9);
|
|
|
|
cs->writeisac(cs, ISAC_TIMR, 0x00);
|
|
|
|
cs->writeisac(cs, ISAC_ADF1, 0x00);
|
|
|
|
}
|
|
|
|
ph_command(cs, ISAC_CMD_RS);
|
|
|
|
cs->writeisac(cs, ISAC_MASK, 0x0);
|
|
|
|
}
|
|
|
|
|
|
|
|
void __devinit
|
|
|
|
clear_pending_isac_ints(struct IsdnCardState *cs)
|
|
|
|
{
|
|
|
|
int val, eval;
|
|
|
|
|
|
|
|
val = cs->readisac(cs, ISAC_STAR);
|
|
|
|
debugl1(cs, "ISAC STAR %x", val);
|
|
|
|
val = cs->readisac(cs, ISAC_MODE);
|
|
|
|
debugl1(cs, "ISAC MODE %x", val);
|
|
|
|
val = cs->readisac(cs, ISAC_ADF2);
|
|
|
|
debugl1(cs, "ISAC ADF2 %x", val);
|
|
|
|
val = cs->readisac(cs, ISAC_ISTA);
|
|
|
|
debugl1(cs, "ISAC ISTA %x", val);
|
|
|
|
if (val & 0x01) {
|
|
|
|
eval = cs->readisac(cs, ISAC_EXIR);
|
|
|
|
debugl1(cs, "ISAC EXIR %x", eval);
|
|
|
|
}
|
|
|
|
val = cs->readisac(cs, ISAC_CIR0);
|
|
|
|
debugl1(cs, "ISAC CIR0 %x", val);
|
|
|
|
cs->dc.isac.ph_state = (val >> 2) & 0xf;
|
|
|
|
schedule_event(cs, D_L1STATECHANGE);
|
|
|
|
/* Disable all IRQ */
|
|
|
|
cs->writeisac(cs, ISAC_MASK, 0xFF);
|
|
|
|
}
|
|
|
|
|
|
|
|
void __devinit
|
|
|
|
setup_isac(struct IsdnCardState *cs)
|
|
|
|
{
|
2006-11-22 14:57:56 +00:00
|
|
|
INIT_WORK(&cs->tqueue, isac_bh);
|
2005-04-16 22:20:36 +00:00
|
|
|
cs->dbusytimer.function = (void *) dbusy_timer_handler;
|
|
|
|
cs->dbusytimer.data = (long) cs;
|
|
|
|
init_timer(&cs->dbusytimer);
|
|
|
|
}
|