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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [isdn/] [hisax/] [hscx_irq.c] - Blame information for rev 62

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/* $Id: hscx_irq.c,v 1.18.2.3 2004/02/11 13:21:34 keil Exp $
 *
 * low level b-channel stuff for Siemens HSCX
 *
 * 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.
 *
 * This is an include file for fast inline IRQ stuff
 *
 */
 
 
static inline void
waitforCEC(struct IsdnCardState *cs, int hscx)
{
        int to = 50;
 
        while ((READHSCX(cs, hscx, HSCX_STAR) & 0x04) && to) {
                udelay(1);
                to--;
        }
        if (!to)
                printk(KERN_WARNING "HiSax: waitforCEC timeout\n");
}
 
 
static inline void
waitforXFW(struct IsdnCardState *cs, int hscx)
{
        int to = 50;
 
        while ((!(READHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {
                udelay(1);
                to--;
        }
        if (!to)
                printk(KERN_WARNING "HiSax: waitforXFW timeout\n");
}
 
static inline void
WriteHSCXCMDR(struct IsdnCardState *cs, int hscx, u_char data)
{
        waitforCEC(cs, hscx);
        WRITEHSCX(cs, hscx, HSCX_CMDR, data);
}
 
 
 
static void
hscx_empty_fifo(struct BCState *bcs, int count)
{
        u_char *ptr;
        struct IsdnCardState *cs = bcs->cs;
 
        if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
                debugl1(cs, "hscx_empty_fifo");
 
        if (bcs->hw.hscx.rcvidx + count > HSCX_BUFMAX) {
                if (cs->debug & L1_DEB_WARN)
                        debugl1(cs, "hscx_empty_fifo: incoming packet too large");
                WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);
                bcs->hw.hscx.rcvidx = 0;
                return;
        }
        ptr = bcs->hw.hscx.rcvbuf + bcs->hw.hscx.rcvidx;
        bcs->hw.hscx.rcvidx += count;
        READHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
        WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);
        if (cs->debug & L1_DEB_HSCX_FIFO) {
                char *t = bcs->blog;
 
                t += sprintf(t, "hscx_empty_fifo %c cnt %d",
                             bcs->hw.hscx.hscx ? 'B' : 'A', count);
                QuickHex(t, ptr, count);
                debugl1(cs, bcs->blog);
        }
}
 
static void
hscx_fill_fifo(struct BCState *bcs)
{
        struct IsdnCardState *cs = bcs->cs;
        int more, count;
        int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags)? 64: 32;
        u_char *ptr;
 
        if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
                debugl1(cs, "hscx_fill_fifo");
 
        if (!bcs->tx_skb)
                return;
        if (bcs->tx_skb->len <= 0)
                return;
 
        more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
        if (bcs->tx_skb->len > fifo_size) {
                more = !0;
                count = fifo_size;
        } else
                count = bcs->tx_skb->len;
 
        waitforXFW(cs, bcs->hw.hscx.hscx);
        ptr = bcs->tx_skb->data;
        skb_pull(bcs->tx_skb, count);
        bcs->tx_cnt -= count;
        bcs->hw.hscx.count += count;
        WRITEHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);
        WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, more ? 0x8 : 0xa);
        if (cs->debug & L1_DEB_HSCX_FIFO) {
                char *t = bcs->blog;
 
                t += sprintf(t, "hscx_fill_fifo %c cnt %d",
                             bcs->hw.hscx.hscx ? 'B' : 'A', count);
                QuickHex(t, ptr, count);
                debugl1(cs, bcs->blog);
        }
}
 
static void
hscx_interrupt(struct IsdnCardState *cs, u_char val, u_char hscx)
{
        u_char r;
        struct BCState *bcs = cs->bcs + hscx;
        struct sk_buff *skb;
        int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags)? 64: 32;
        int count;
 
        if (!test_bit(BC_FLG_INIT, &bcs->Flag))
                return;
 
        if (val & 0x80) {       /* RME */
                r = READHSCX(cs, hscx, HSCX_RSTA);
                if ((r & 0xf0) != 0xa0) {
                        if (!(r & 0x80)) {
                                if (cs->debug & L1_DEB_WARN)
                                        debugl1(cs, "HSCX invalid frame");
#ifdef ERROR_STATISTIC
                                bcs->err_inv++;
#endif
                        }
                        if ((r & 0x40) && bcs->mode) {
                                if (cs->debug & L1_DEB_WARN)
                                        debugl1(cs, "HSCX RDO mode=%d",
                                                bcs->mode);
#ifdef ERROR_STATISTIC
                                bcs->err_rdo++;
#endif
                        }
                        if (!(r & 0x20)) {
                                if (cs->debug & L1_DEB_WARN)
                                        debugl1(cs, "HSCX CRC error");
#ifdef ERROR_STATISTIC
                                bcs->err_crc++;
#endif
                        }
                        WriteHSCXCMDR(cs, hscx, 0x80);
                } else {
                        count = READHSCX(cs, hscx, HSCX_RBCL) & (
                                test_bit(HW_IPAC, &cs->HW_Flags)? 0x3f: 0x1f);
                        if (count == 0)
                                count = fifo_size;
                        hscx_empty_fifo(bcs, count);
                        if ((count = bcs->hw.hscx.rcvidx - 1) > 0) {
                                if (cs->debug & L1_DEB_HSCX_FIFO)
                                        debugl1(cs, "HX Frame %d", count);
                                if (!(skb = dev_alloc_skb(count)))
                                        printk(KERN_WARNING "HSCX: receive out of memory\n");
                                else {
                                        memcpy(skb_put(skb, count), bcs->hw.hscx.rcvbuf, count);
                                        skb_queue_tail(&bcs->rqueue, skb);
                                }
                        }
                }
                bcs->hw.hscx.rcvidx = 0;
                schedule_event(bcs, B_RCVBUFREADY);
        }
        if (val & 0x40) {       /* RPF */
                hscx_empty_fifo(bcs, fifo_size);
                if (bcs->mode == L1_MODE_TRANS) {
                        /* receive audio data */
                        if (!(skb = dev_alloc_skb(fifo_size)))
                                printk(KERN_WARNING "HiSax: receive out of memory\n");
                        else {
                                memcpy(skb_put(skb, fifo_size), bcs->hw.hscx.rcvbuf, fifo_size);
                                skb_queue_tail(&bcs->rqueue, skb);
                        }
                        bcs->hw.hscx.rcvidx = 0;
                        schedule_event(bcs, B_RCVBUFREADY);
                }
        }
        if (val & 0x10) {       /* XPR */
                if (bcs->tx_skb) {
                        if (bcs->tx_skb->len) {
                                hscx_fill_fifo(bcs);
                                return;
                        } else {
                                if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
                                        (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
                                        u_long  flags;
                                        spin_lock_irqsave(&bcs->aclock, flags);
                                        bcs->ackcnt += bcs->hw.hscx.count;
                                        spin_unlock_irqrestore(&bcs->aclock, flags);
                                        schedule_event(bcs, B_ACKPENDING);
                                }
                                dev_kfree_skb_irq(bcs->tx_skb);
                                bcs->hw.hscx.count = 0;
                                bcs->tx_skb = NULL;
                        }
                }
                if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
                        bcs->hw.hscx.count = 0;
                        test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
                        hscx_fill_fifo(bcs);
                } else {
                        test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
                        schedule_event(bcs, B_XMTBUFREADY);
                }
        }
}
 
static void
hscx_int_main(struct IsdnCardState *cs, u_char val)
{
 
        u_char exval;
        struct BCState *bcs;
 
        if (val & 0x01) {
                bcs = cs->bcs + 1;
                exval = READHSCX(cs, 1, HSCX_EXIR);
                if (exval & 0x40) {
                        if (bcs->mode == 1)
                                hscx_fill_fifo(bcs);
                        else {
#ifdef ERROR_STATISTIC
                                bcs->err_tx++;
#endif
                                /* Here we lost an TX interrupt, so
                                   * restart transmitting the whole frame.
                                 */
                                if (bcs->tx_skb) {
                                        skb_push(bcs->tx_skb, bcs->hw.hscx.count);
                                        bcs->tx_cnt += bcs->hw.hscx.count;
                                        bcs->hw.hscx.count = 0;
                                }
                                WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);
                                if (cs->debug & L1_DEB_WARN)
                                        debugl1(cs, "HSCX B EXIR %x Lost TX", exval);
                        }
                } else if (cs->debug & L1_DEB_HSCX)
                        debugl1(cs, "HSCX B EXIR %x", exval);
        }
        if (val & 0xf8) {
                if (cs->debug & L1_DEB_HSCX)
                        debugl1(cs, "HSCX B interrupt %x", val);
                hscx_interrupt(cs, val, 1);
        }
        if (val & 0x02) {
                bcs = cs->bcs;
                exval = READHSCX(cs, 0, HSCX_EXIR);
                if (exval & 0x40) {
                        if (bcs->mode == L1_MODE_TRANS)
                                hscx_fill_fifo(bcs);
                        else {
                                /* Here we lost an TX interrupt, so
                                   * restart transmitting the whole frame.
                                 */
#ifdef ERROR_STATISTIC
                                bcs->err_tx++;
#endif
                                if (bcs->tx_skb) {
                                        skb_push(bcs->tx_skb, bcs->hw.hscx.count);
                                        bcs->tx_cnt += bcs->hw.hscx.count;
                                        bcs->hw.hscx.count = 0;
                                }
                                WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);
                                if (cs->debug & L1_DEB_WARN)
                                        debugl1(cs, "HSCX A EXIR %x Lost TX", exval);
                        }
                } else if (cs->debug & L1_DEB_HSCX)
                        debugl1(cs, "HSCX A EXIR %x", exval);
        }
        if (val & 0x04) {
                exval = READHSCX(cs, 0, HSCX_ISTA);
                if (cs->debug & L1_DEB_HSCX)
                        debugl1(cs, "HSCX A interrupt %x", exval);
                hscx_interrupt(cs, exval, 0);
        }
}

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [isdn/] [hisax/] [hscx_irq.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/* $Id: hscx_irq.c,v 1.18.2.3 2004/02/11 13:21:34 keil Exp $`
2			`*`
3			`* low level b-channel stuff for Siemens HSCX`
4			`*`
5			`* Author Karsten Keil`
6			`* Copyright by Karsten Keil <keil@isdn4linux.de>`
7			`*`
8			`* This software may be used and distributed according to the terms`
9			`* of the GNU General Public License, incorporated herein by reference.`
10			`*`
11			`* This is an include file for fast inline IRQ stuff`
12			`*`
13			`*/`
14
15
16			`static inline void`
17			`waitforCEC(struct IsdnCardState *cs, int hscx)`
18			`{`
19			`int to = 50;`
20
21			`while ((READHSCX(cs, hscx, HSCX_STAR) & 0x04) && to) {`
22			`udelay(1);`
23			`to--;`
24			`}`
25			`if (!to)`
26			`printk(KERN_WARNING "HiSax: waitforCEC timeout\n");`
27			`}`
28
29
30			`static inline void`
31			`waitforXFW(struct IsdnCardState *cs, int hscx)`
32			`{`
33			`int to = 50;`
34
35			`while ((!(READHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {`
36			`udelay(1);`
37			`to--;`
38			`}`
39			`if (!to)`
40			`printk(KERN_WARNING "HiSax: waitforXFW timeout\n");`
41			`}`
42
43			`static inline void`
44			`WriteHSCXCMDR(struct IsdnCardState *cs, int hscx, u_char data)`
45			`{`
46			`waitforCEC(cs, hscx);`
47			`WRITEHSCX(cs, hscx, HSCX_CMDR, data);`
48			`}`
49
50
51
52			`static void`
53			`hscx_empty_fifo(struct BCState *bcs, int count)`
54			`{`
55			`u_char *ptr;`
56			`struct IsdnCardState *cs = bcs->cs;`
57
58			`if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))`
59			`debugl1(cs, "hscx_empty_fifo");`
60
61			`if (bcs->hw.hscx.rcvidx + count > HSCX_BUFMAX) {`
62			`if (cs->debug & L1_DEB_WARN)`
63			`debugl1(cs, "hscx_empty_fifo: incoming packet too large");`
64			`WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);`
65			`bcs->hw.hscx.rcvidx = 0;`
66			`return;`
67			`}`
68			`ptr = bcs->hw.hscx.rcvbuf + bcs->hw.hscx.rcvidx;`
69			`bcs->hw.hscx.rcvidx += count;`
70			`READHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);`
71			`WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x80);`
72			`if (cs->debug & L1_DEB_HSCX_FIFO) {`
73			`char *t = bcs->blog;`
74
75			`t += sprintf(t, "hscx_empty_fifo %c cnt %d",`
76			`bcs->hw.hscx.hscx ? 'B' : 'A', count);`
77			`QuickHex(t, ptr, count);`
78			`debugl1(cs, bcs->blog);`
79			`}`
80			`}`
81
82			`static void`
83			`hscx_fill_fifo(struct BCState *bcs)`
84			`{`
85			`struct IsdnCardState *cs = bcs->cs;`
86			`int more, count;`
87			`int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags)? 64: 32;`
88			`u_char *ptr;`
89
90			`if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))`
91			`debugl1(cs, "hscx_fill_fifo");`
92
93			`if (!bcs->tx_skb)`
94			`return;`
95			`if (bcs->tx_skb->len <= 0)`
96			`return;`
97
98			`more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;`
99			`if (bcs->tx_skb->len > fifo_size) {`
100			`more = !0;`
101			`count = fifo_size;`
102			`} else`
103			`count = bcs->tx_skb->len;`
104
105			`waitforXFW(cs, bcs->hw.hscx.hscx);`
106			`ptr = bcs->tx_skb->data;`
107			`skb_pull(bcs->tx_skb, count);`
108			`bcs->tx_cnt -= count;`
109			`bcs->hw.hscx.count += count;`
110			`WRITEHSCXFIFO(cs, bcs->hw.hscx.hscx, ptr, count);`
111			`WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, more ? 0x8 : 0xa);`
112			`if (cs->debug & L1_DEB_HSCX_FIFO) {`
113			`char *t = bcs->blog;`
114
115			`t += sprintf(t, "hscx_fill_fifo %c cnt %d",`
116			`bcs->hw.hscx.hscx ? 'B' : 'A', count);`
117			`QuickHex(t, ptr, count);`
118			`debugl1(cs, bcs->blog);`
119			`}`
120			`}`
121
122			`static void`
123			`hscx_interrupt(struct IsdnCardState *cs, u_char val, u_char hscx)`
124			`{`
125			`u_char r;`
126			`struct BCState *bcs = cs->bcs + hscx;`
127			`struct sk_buff *skb;`
128			`int fifo_size = test_bit(HW_IPAC, &cs->HW_Flags)? 64: 32;`
129			`int count;`
130
131			`if (!test_bit(BC_FLG_INIT, &bcs->Flag))`
132			`return;`
133
134			`if (val & 0x80) { /* RME */`
135			`r = READHSCX(cs, hscx, HSCX_RSTA);`
136			`if ((r & 0xf0) != 0xa0) {`
137			`if (!(r & 0x80)) {`
138			`if (cs->debug & L1_DEB_WARN)`
139			`debugl1(cs, "HSCX invalid frame");`
140			`#ifdef ERROR_STATISTIC`
141			`bcs->err_inv++;`
142			`#endif`
143			`}`
144			`if ((r & 0x40) && bcs->mode) {`
145			`if (cs->debug & L1_DEB_WARN)`
146			`debugl1(cs, "HSCX RDO mode=%d",`
147			`bcs->mode);`
148			`#ifdef ERROR_STATISTIC`
149			`bcs->err_rdo++;`
150			`#endif`
151			`}`
152			`if (!(r & 0x20)) {`
153			`if (cs->debug & L1_DEB_WARN)`
154			`debugl1(cs, "HSCX CRC error");`
155			`#ifdef ERROR_STATISTIC`
156			`bcs->err_crc++;`
157			`#endif`
158			`}`
159			`WriteHSCXCMDR(cs, hscx, 0x80);`
160			`} else {`
161			`count = READHSCX(cs, hscx, HSCX_RBCL) & (`
162			`test_bit(HW_IPAC, &cs->HW_Flags)? 0x3f: 0x1f);`
163			`if (count == 0)`
164			`count = fifo_size;`
165			`hscx_empty_fifo(bcs, count);`
166			`if ((count = bcs->hw.hscx.rcvidx - 1) > 0) {`
167			`if (cs->debug & L1_DEB_HSCX_FIFO)`
168			`debugl1(cs, "HX Frame %d", count);`
169			`if (!(skb = dev_alloc_skb(count)))`
170			`printk(KERN_WARNING "HSCX: receive out of memory\n");`
171			`else {`
172			`memcpy(skb_put(skb, count), bcs->hw.hscx.rcvbuf, count);`
173			`skb_queue_tail(&bcs->rqueue, skb);`
174			`}`
175			`}`
176			`}`
177			`bcs->hw.hscx.rcvidx = 0;`
178			`schedule_event(bcs, B_RCVBUFREADY);`
179			`}`
180			`if (val & 0x40) { /* RPF */`
181			`hscx_empty_fifo(bcs, fifo_size);`
182			`if (bcs->mode == L1_MODE_TRANS) {`
183			`/* receive audio data */`
184			`if (!(skb = dev_alloc_skb(fifo_size)))`
185			`printk(KERN_WARNING "HiSax: receive out of memory\n");`
186			`else {`
187			`memcpy(skb_put(skb, fifo_size), bcs->hw.hscx.rcvbuf, fifo_size);`
188			`skb_queue_tail(&bcs->rqueue, skb);`
189			`}`
190			`bcs->hw.hscx.rcvidx = 0;`
191			`schedule_event(bcs, B_RCVBUFREADY);`
192			`}`
193			`}`
194			`if (val & 0x10) { /* XPR */`
195			`if (bcs->tx_skb) {`
196			`if (bcs->tx_skb->len) {`
197			`hscx_fill_fifo(bcs);`
198			`return;`
199			`} else {`
200			`if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&`
201			`(PACKET_NOACK != bcs->tx_skb->pkt_type)) {`
202			`u_long flags;`
203			`spin_lock_irqsave(&bcs->aclock, flags);`
204			`bcs->ackcnt += bcs->hw.hscx.count;`
205			`spin_unlock_irqrestore(&bcs->aclock, flags);`
206			`schedule_event(bcs, B_ACKPENDING);`
207			`}`
208			`dev_kfree_skb_irq(bcs->tx_skb);`
209			`bcs->hw.hscx.count = 0;`
210			`bcs->tx_skb = NULL;`
211			`}`
212			`}`
213			`if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {`
214			`bcs->hw.hscx.count = 0;`
215			`test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);`
216			`hscx_fill_fifo(bcs);`
217			`} else {`
218			`test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);`
219			`schedule_event(bcs, B_XMTBUFREADY);`
220			`}`
221			`}`
222			`}`
223
224			`static void`
225			`hscx_int_main(struct IsdnCardState *cs, u_char val)`
226			`{`
227
228			`u_char exval;`
229			`struct BCState *bcs;`
230
231			`if (val & 0x01) {`
232			`bcs = cs->bcs + 1;`
233			`exval = READHSCX(cs, 1, HSCX_EXIR);`
234			`if (exval & 0x40) {`
235			`if (bcs->mode == 1)`
236			`hscx_fill_fifo(bcs);`
237			`else {`
238			`#ifdef ERROR_STATISTIC`
239			`bcs->err_tx++;`
240			`#endif`
241			`/* Here we lost an TX interrupt, so`
242			`* restart transmitting the whole frame.`
243			`*/`
244			`if (bcs->tx_skb) {`
245			`skb_push(bcs->tx_skb, bcs->hw.hscx.count);`
246			`bcs->tx_cnt += bcs->hw.hscx.count;`
247			`bcs->hw.hscx.count = 0;`
248			`}`
249			`WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);`
250			`if (cs->debug & L1_DEB_WARN)`
251			`debugl1(cs, "HSCX B EXIR %x Lost TX", exval);`
252			`}`
253			`} else if (cs->debug & L1_DEB_HSCX)`
254			`debugl1(cs, "HSCX B EXIR %x", exval);`
255			`}`
256			`if (val & 0xf8) {`
257			`if (cs->debug & L1_DEB_HSCX)`
258			`debugl1(cs, "HSCX B interrupt %x", val);`
259			`hscx_interrupt(cs, val, 1);`
260			`}`
261			`if (val & 0x02) {`
262			`bcs = cs->bcs;`
263			`exval = READHSCX(cs, 0, HSCX_EXIR);`
264			`if (exval & 0x40) {`
265			`if (bcs->mode == L1_MODE_TRANS)`
266			`hscx_fill_fifo(bcs);`
267			`else {`
268			`/* Here we lost an TX interrupt, so`
269			`* restart transmitting the whole frame.`
270			`*/`
271			`#ifdef ERROR_STATISTIC`
272			`bcs->err_tx++;`
273			`#endif`
274			`if (bcs->tx_skb) {`
275			`skb_push(bcs->tx_skb, bcs->hw.hscx.count);`
276			`bcs->tx_cnt += bcs->hw.hscx.count;`
277			`bcs->hw.hscx.count = 0;`
278			`}`
279			`WriteHSCXCMDR(cs, bcs->hw.hscx.hscx, 0x01);`
280			`if (cs->debug & L1_DEB_WARN)`
281			`debugl1(cs, "HSCX A EXIR %x Lost TX", exval);`
282			`}`
283			`} else if (cs->debug & L1_DEB_HSCX)`
284			`debugl1(cs, "HSCX A EXIR %x", exval);`
285			`}`
286			`if (val & 0x04) {`
287			`exval = READHSCX(cs, 0, HSCX_ISTA);`
288			`if (cs->debug & L1_DEB_HSCX)`
289			`debugl1(cs, "HSCX A interrupt %x", exval);`
290			`hscx_interrupt(cs, exval, 0);`
291			`}`
292			`}`