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path: root/drivers/isdn/hisax/arcofi.c
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Diffstat (limited to 'drivers/isdn/hisax/arcofi.c')
-rw-r--r--drivers/isdn/hisax/arcofi.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/arcofi.c b/drivers/isdn/hisax/arcofi.c
new file mode 100644
index 000000000..29ec2dfbd
--- /dev/null
+++ b/drivers/isdn/hisax/arcofi.c
@@ -0,0 +1,133 @@
+/* $Id: arcofi.c,v 1.14.2.3 2004/01/13 14:31:24 keil Exp $
+ *
+ * Ansteuerung ARCOFI 2165
+ *
+ * Author Karsten Keil
+ * Copyright by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/sched.h>
+#include "hisax.h"
+#include "isdnl1.h"
+#include "isac.h"
+#include "arcofi.h"
+
+#define ARCOFI_TIMER_VALUE 20
+
+static void
+add_arcofi_timer(struct IsdnCardState *cs) {
+ if (test_and_set_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
+ del_timer(&cs->dc.isac.arcofitimer);
+ }
+ init_timer(&cs->dc.isac.arcofitimer);
+ cs->dc.isac.arcofitimer.expires = jiffies + ((ARCOFI_TIMER_VALUE * HZ) / 1000);
+ add_timer(&cs->dc.isac.arcofitimer);
+}
+
+static void
+send_arcofi(struct IsdnCardState *cs) {
+ add_arcofi_timer(cs);
+ cs->dc.isac.mon_txp = 0;
+ cs->dc.isac.mon_txc = cs->dc.isac.arcofi_list->len;
+ memcpy(cs->dc.isac.mon_tx, cs->dc.isac.arcofi_list->msg, cs->dc.isac.mon_txc);
+ switch (cs->dc.isac.arcofi_bc) {
+ case 0: break;
+ case 1: cs->dc.isac.mon_tx[1] |= 0x40;
+ break;
+ default: break;
+ }
+ cs->dc.isac.mocr &= 0x0f;
+ cs->dc.isac.mocr |= 0xa0;
+ cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
+ (void) cs->readisac(cs, ISAC_MOSR);
+ cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
+ cs->dc.isac.mocr |= 0x10;
+ cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
+}
+
+int
+arcofi_fsm(struct IsdnCardState *cs, int event, void *data) {
+ if (cs->debug & L1_DEB_MONITOR) {
+ debugl1(cs, "arcofi state %d event %d", cs->dc.isac.arcofi_state, event);
+ }
+ if (event == ARCOFI_TIMEOUT) {
+ cs->dc.isac.arcofi_state = ARCOFI_NOP;
+ test_and_set_bit(FLG_ARCOFI_ERROR, &cs->HW_Flags);
+ wake_up(&cs->dc.isac.arcofi_wait);
+ return (1);
+ }
+ switch (cs->dc.isac.arcofi_state) {
+ case ARCOFI_NOP:
+ if (event == ARCOFI_START) {
+ cs->dc.isac.arcofi_list = data;
+ cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
+ send_arcofi(cs);
+ }
+ break;
+ case ARCOFI_TRANSMIT:
+ if (event == ARCOFI_TX_END) {
+ if (cs->dc.isac.arcofi_list->receive) {
+ add_arcofi_timer(cs);
+ cs->dc.isac.arcofi_state = ARCOFI_RECEIVE;
+ } else {
+ if (cs->dc.isac.arcofi_list->next) {
+ cs->dc.isac.arcofi_list =
+ cs->dc.isac.arcofi_list->next;
+ send_arcofi(cs);
+ } else {
+ if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
+ del_timer(&cs->dc.isac.arcofitimer);
+ }
+ cs->dc.isac.arcofi_state = ARCOFI_NOP;
+ wake_up(&cs->dc.isac.arcofi_wait);
+ }
+ }
+ }
+ break;
+ case ARCOFI_RECEIVE:
+ if (event == ARCOFI_RX_END) {
+ if (cs->dc.isac.arcofi_list->next) {
+ cs->dc.isac.arcofi_list =
+ cs->dc.isac.arcofi_list->next;
+ cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
+ send_arcofi(cs);
+ } else {
+ if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
+ del_timer(&cs->dc.isac.arcofitimer);
+ }
+ cs->dc.isac.arcofi_state = ARCOFI_NOP;
+ wake_up(&cs->dc.isac.arcofi_wait);
+ }
+ }
+ break;
+ default:
+ debugl1(cs, "Arcofi unknown state %x", cs->dc.isac.arcofi_state);
+ return (2);
+ }
+ return (0);
+}
+
+static void
+arcofi_timer(struct IsdnCardState *cs) {
+ arcofi_fsm(cs, ARCOFI_TIMEOUT, NULL);
+}
+
+void
+clear_arcofi(struct IsdnCardState *cs) {
+ if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
+ del_timer(&cs->dc.isac.arcofitimer);
+ }
+}
+
+void
+init_arcofi(struct IsdnCardState *cs) {
+ cs->dc.isac.arcofitimer.function = (void *) arcofi_timer;
+ cs->dc.isac.arcofitimer.data = (long) cs;
+ init_timer(&cs->dc.isac.arcofitimer);
+ init_waitqueue_head(&cs->dc.isac.arcofi_wait);
+ test_and_set_bit(HW_ARCOFI, &cs->HW_Flags);
+}