1 /* drivers/atm/zatm.c - ZeitNet ZN122x device driver */
3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
6 #include <linux/config.h>
7 #include <linux/module.h>
8 #include <linux/sched.h>
9 #include <linux/kernel.h>
11 #include <linux/pci.h>
12 #include <linux/errno.h>
13 #include <linux/atm.h>
14 #include <linux/atmdev.h>
15 #include <linux/sonet.h>
16 #include <linux/skbuff.h>
17 #include <linux/netdevice.h>
18 #include <linux/delay.h>
19 #include <linux/ioport.h> /* for request_region */
20 #include <linux/uio.h>
21 #include <linux/init.h>
22 #include <linux/atm_zatm.h>
23 #include <linux/capability.h>
24 #include <linux/bitops.h>
25 #include <asm/byteorder.h>
26 #include <asm/system.h>
27 #include <asm/string.h>
29 #include <asm/atomic.h>
30 #include <asm/uaccess.h>
42 * - support 64 kB SDUs (will have to use multibuffer batches then :-( )
43 * - proper use of CDV, credit = max(1,CDVT*PCR)
45 * - better receive timestamps
50 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
52 #define DPRINTK(format,args...)
55 #ifndef CONFIG_ATM_ZATM_DEBUG
63 static void event_dump(void)
72 * NULL pointer checking
75 #define NULLCHECK(x) \
76 if ((unsigned long) (x) < 0x30) printk(KERN_CRIT #x "==0x%x\n", (int) (x))
79 * Very extensive activity logging. Greatly improves bug detection speed but
80 * costs a few Mbps if enabled.
85 static const char *ev[EV];
86 static unsigned long ev_a[EV],ev_b[EV];
90 static void EVENT(const char *s,unsigned long a,unsigned long b)
99 static void event_dump(void)
103 printk(KERN_NOTICE "----- event dump follows -----\n");
104 for (n = 0; n < EV; n++) {
107 printk(ev[i] ? ev[i] : "(null)",ev_a[i],ev_b[i]);
109 printk(KERN_NOTICE "----- event dump ends here -----\n");
113 #endif /* CONFIG_ATM_ZATM_DEBUG */
116 #define RING_BUSY 1 /* indication from do_tx that PDU has to be
119 static struct atm_dev *zatm_boards = NULL;
120 static unsigned long dummy[2] = {0,0};
123 #define zin_n(r) inl(zatm_dev->base+r*4)
124 #define zin(r) inl(zatm_dev->base+uPD98401_##r*4)
125 #define zout(v,r) outl(v,zatm_dev->base+uPD98401_##r*4)
126 #define zwait while (zin(CMR) & uPD98401_BUSY)
128 /* RX0, RX1, TX0, TX1 */
129 static const int mbx_entries[NR_MBX] = { 1024,1024,1024,1024 };
130 static const int mbx_esize[NR_MBX] = { 16,16,4,4 }; /* entry size in bytes */
132 #define MBX_SIZE(i) (mbx_entries[i]*mbx_esize[i])
135 /*-------------------------------- utilities --------------------------------*/
138 static void zpokel(struct zatm_dev *zatm_dev,u32 value,u32 addr)
142 zout(uPD98401_IND_ACC | uPD98401_IA_BALL |
143 (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
147 static u32 zpeekl(struct zatm_dev *zatm_dev,u32 addr)
150 zout(uPD98401_IND_ACC | uPD98401_IA_BALL | uPD98401_IA_RW |
151 (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
157 /*------------------------------- free lists --------------------------------*/
161 * Free buffer head structure:
162 * [0] pointer to buffer (for SAR)
163 * [1] buffer descr link pointer (for SAR)
164 * [2] back pointer to skb (for poll_rx)
169 struct rx_buffer_head {
170 u32 buffer; /* pointer to buffer (for SAR) */
171 u32 link; /* buffer descriptor link pointer (for SAR) */
172 struct sk_buff *skb; /* back pointer to skb (for poll_rx) */
176 static void refill_pool(struct atm_dev *dev,int pool)
178 struct zatm_dev *zatm_dev;
180 struct rx_buffer_head *first;
182 int align,offset,free,count,size;
184 EVENT("refill_pool\n",0,0);
185 zatm_dev = ZATM_DEV(dev);
186 size = (64 << (pool <= ZATM_AAL5_POOL_BASE ? 0 :
187 pool-ZATM_AAL5_POOL_BASE))+sizeof(struct rx_buffer_head);
188 if (size < PAGE_SIZE) {
189 align = 32; /* for 32 byte alignment */
190 offset = sizeof(struct rx_buffer_head);
194 offset = zatm_dev->pool_info[pool].offset+
195 sizeof(struct rx_buffer_head);
198 spin_lock_irqsave(&zatm_dev->lock, flags);
199 free = zpeekl(zatm_dev,zatm_dev->pool_base+2*pool) &
200 uPD98401_RXFP_REMAIN;
201 spin_unlock_irqrestore(&zatm_dev->lock, flags);
202 if (free >= zatm_dev->pool_info[pool].low_water) return;
203 EVENT("starting ... POOL: 0x%x, 0x%x\n",
204 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
205 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
206 EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
209 while (free < zatm_dev->pool_info[pool].high_water) {
210 struct rx_buffer_head *head;
212 skb = alloc_skb(size,GFP_ATOMIC);
214 printk(KERN_WARNING DEV_LABEL "(Itf %d): got no new "
215 "skb (%d) with %d free\n",dev->number,size,free);
218 skb_reserve(skb,(unsigned char *) ((((unsigned long) skb->data+
219 align+offset-1) & ~(unsigned long) (align-1))-offset)-
221 head = (struct rx_buffer_head *) skb->data;
222 skb_reserve(skb,sizeof(struct rx_buffer_head));
223 if (!first) first = head;
225 head->buffer = virt_to_bus(skb->data);
228 EVENT("enq skb 0x%08lx/0x%08lx\n",(unsigned long) skb,
229 (unsigned long) head);
230 spin_lock_irqsave(&zatm_dev->lock, flags);
231 if (zatm_dev->last_free[pool])
232 ((struct rx_buffer_head *) (zatm_dev->last_free[pool]->
233 data))[-1].link = virt_to_bus(head);
234 zatm_dev->last_free[pool] = skb;
235 skb_queue_tail(&zatm_dev->pool[pool],skb);
236 spin_unlock_irqrestore(&zatm_dev->lock, flags);
240 spin_lock_irqsave(&zatm_dev->lock, flags);
242 zout(virt_to_bus(first),CER);
243 zout(uPD98401_ADD_BAT | (pool << uPD98401_POOL_SHIFT) | count,
245 spin_unlock_irqrestore(&zatm_dev->lock, flags);
246 EVENT ("POOL: 0x%x, 0x%x\n",
247 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
248 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
249 EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
254 static void drain_free(struct atm_dev *dev,int pool)
256 skb_queue_purge(&ZATM_DEV(dev)->pool[pool]);
260 static int pool_index(int max_pdu)
264 if (max_pdu % ATM_CELL_PAYLOAD)
265 printk(KERN_ERR DEV_LABEL ": driver error in pool_index: "
266 "max_pdu is %d\n",max_pdu);
267 if (max_pdu > 65536) return -1;
268 for (i = 0; (64 << i) < max_pdu; i++);
269 return i+ZATM_AAL5_POOL_BASE;
273 /* use_pool isn't reentrant */
276 static void use_pool(struct atm_dev *dev,int pool)
278 struct zatm_dev *zatm_dev;
282 zatm_dev = ZATM_DEV(dev);
283 if (!(zatm_dev->pool_info[pool].ref_count++)) {
284 skb_queue_head_init(&zatm_dev->pool[pool]);
285 size = pool-ZATM_AAL5_POOL_BASE;
286 if (size < 0) size = 0; /* 64B... */
287 else if (size > 10) size = 10; /* ... 64kB */
288 spin_lock_irqsave(&zatm_dev->lock, flags);
289 zpokel(zatm_dev,((zatm_dev->pool_info[pool].low_water/4) <<
290 uPD98401_RXFP_ALERT_SHIFT) |
291 (1 << uPD98401_RXFP_BTSZ_SHIFT) |
292 (size << uPD98401_RXFP_BFSZ_SHIFT),
293 zatm_dev->pool_base+pool*2);
294 zpokel(zatm_dev,(unsigned long) dummy,zatm_dev->pool_base+
296 spin_unlock_irqrestore(&zatm_dev->lock, flags);
297 zatm_dev->last_free[pool] = NULL;
298 refill_pool(dev,pool);
300 DPRINTK("pool %d: %d\n",pool,zatm_dev->pool_info[pool].ref_count);
304 static void unuse_pool(struct atm_dev *dev,int pool)
306 if (!(--ZATM_DEV(dev)->pool_info[pool].ref_count))
307 drain_free(dev,pool);
310 /*----------------------------------- RX ------------------------------------*/
314 static void exception(struct atm_vcc *vcc)
316 static int count = 0;
317 struct zatm_dev *zatm_dev = ZATM_DEV(vcc->dev);
318 struct zatm_vcc *zatm_vcc = ZATM_VCC(vcc);
322 if (count++ > 2) return;
323 for (i = 0; i < 8; i++)
324 printk("TX%d: 0x%08lx\n",i,
325 zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+i));
326 for (i = 0; i < 5; i++)
327 printk("SH%d: 0x%08lx\n",i,
328 zpeekl(zatm_dev,uPD98401_IM(zatm_vcc->shaper)+16*i));
329 qrp = (unsigned long *) zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
331 printk("qrp=0x%08lx\n",(unsigned long) qrp);
332 for (i = 0; i < 4; i++) printk("QRP[%d]: 0x%08lx",i,qrp[i]);
337 static const char *err_txt[] = {
341 "Maximum len violation",
357 static void poll_rx(struct atm_dev *dev,int mbx)
359 struct zatm_dev *zatm_dev;
364 EVENT("poll_rx\n",0,0);
365 zatm_dev = ZATM_DEV(dev);
366 pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
367 while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
373 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
375 if (((pos += 16) & 0xffff) == zatm_dev->mbx_end[mbx])
376 pos = zatm_dev->mbx_start[mbx];
377 cells = here[0] & uPD98401_AAL5_SIZE;
379 printk("RX IND: 0x%x, 0x%x, 0x%x, 0x%x\n",here[0],here[1],here[2],here[3]);
382 printk("POOL: 0x%08x, 0x%08x\n",zpeekl(zatm_dev,
383 zatm_dev->pool_base),
384 zpeekl(zatm_dev,zatm_dev->pool_base+1));
385 x = (unsigned long *) here[2];
386 printk("[0..3] = 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx\n",
387 x[0],x[1],x[2],x[3]);
391 if (here[3] & uPD98401_AAL5_ERR) {
392 error = (here[3] & uPD98401_AAL5_ES) >>
393 uPD98401_AAL5_ES_SHIFT;
394 if (error == uPD98401_AAL5_ES_DEACT ||
395 error == uPD98401_AAL5_ES_FREE) continue;
397 EVENT("error code 0x%x/0x%x\n",(here[3] & uPD98401_AAL5_ES) >>
398 uPD98401_AAL5_ES_SHIFT,error);
399 skb = ((struct rx_buffer_head *) bus_to_virt(here[2]))->skb;
400 do_gettimeofday(&skb->stamp);
402 printk("[-3..0] 0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",((unsigned *) skb->data)[-3],
403 ((unsigned *) skb->data)[-2],((unsigned *) skb->data)[-1],
404 ((unsigned *) skb->data)[0]);
406 EVENT("skb 0x%lx, here 0x%lx\n",(unsigned long) skb,
407 (unsigned long) here);
409 printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
411 size = error ? 0 : ntohs(((u16 *) skb->data)[cells*
412 ATM_CELL_PAYLOAD/sizeof(u16)-3]);
413 EVENT("got skb 0x%lx, size %d\n",(unsigned long) skb,size);
414 chan = (here[3] & uPD98401_AAL5_CHAN) >>
415 uPD98401_AAL5_CHAN_SHIFT;
416 if (chan < zatm_dev->chans && zatm_dev->rx_map[chan]) {
417 vcc = zatm_dev->rx_map[chan];
418 if (skb == zatm_dev->last_free[ZATM_VCC(vcc)->pool])
419 zatm_dev->last_free[ZATM_VCC(vcc)->pool] = NULL;
423 printk(KERN_ERR DEV_LABEL "(itf %d): RX indication "
424 "for non-existing channel\n",dev->number);
430 static unsigned long silence = 0;
431 static int last_error = 0;
433 if (error != last_error ||
434 time_after(jiffies, silence) || silence == 0){
435 printk(KERN_WARNING DEV_LABEL "(itf %d): "
436 "chan %d error %s\n",dev->number,chan,
439 silence = (jiffies+2*HZ)|1;
443 if (size && (size > cells*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER ||
444 size <= (cells-1)*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER)) {
445 printk(KERN_ERR DEV_LABEL "(itf %d): size %d with %d "
446 "cells\n",dev->number,size,cells);
450 if (size > ATM_MAX_AAL5_PDU) {
451 printk(KERN_ERR DEV_LABEL "(itf %d): size too big "
452 "(%d)\n",dev->number,size);
457 dev_kfree_skb_irq(skb);
458 if (vcc) atomic_inc(&vcc->stats->rx_err);
461 if (!atm_charge(vcc,skb->truesize)) {
462 dev_kfree_skb_irq(skb);
466 ATM_SKB(skb)->vcc = vcc;
468 atomic_inc(&vcc->stats->rx);
470 zout(pos & 0xffff,MTA(mbx));
471 #if 0 /* probably a stupid idea */
472 refill_pool(dev,zatm_vcc->pool);
473 /* maybe this saves us a few interrupts */
478 static int open_rx_first(struct atm_vcc *vcc)
480 struct zatm_dev *zatm_dev;
481 struct zatm_vcc *zatm_vcc;
486 DPRINTK("open_rx_first (0x%x)\n",inb_p(0xc053));
487 zatm_dev = ZATM_DEV(vcc->dev);
488 zatm_vcc = ZATM_VCC(vcc);
489 zatm_vcc->rx_chan = 0;
490 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
491 if (vcc->qos.aal == ATM_AAL5) {
492 if (vcc->qos.rxtp.max_sdu > 65464)
493 vcc->qos.rxtp.max_sdu = 65464;
494 /* fix this - we may want to receive 64kB SDUs
496 cells = (vcc->qos.rxtp.max_sdu+ATM_AAL5_TRAILER+
497 ATM_CELL_PAYLOAD-1)/ATM_CELL_PAYLOAD;
498 zatm_vcc->pool = pool_index(cells*ATM_CELL_PAYLOAD);
502 zatm_vcc->pool = ZATM_AAL0_POOL;
504 if (zatm_vcc->pool < 0) return -EMSGSIZE;
505 spin_lock_irqsave(&zatm_dev->lock, flags);
507 zout(uPD98401_OPEN_CHAN,CMR);
509 DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
510 chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
511 spin_unlock_irqrestore(&zatm_dev->lock, flags);
512 DPRINTK("chan is %d\n",chan);
513 if (!chan) return -EAGAIN;
514 use_pool(vcc->dev,zatm_vcc->pool);
515 DPRINTK("pool %d\n",zatm_vcc->pool);
516 /* set up VC descriptor */
517 spin_lock_irqsave(&zatm_dev->lock, flags);
518 zpokel(zatm_dev,zatm_vcc->pool << uPD98401_RXVC_POOL_SHIFT,
520 zpokel(zatm_dev,uPD98401_RXVC_OD | (vcc->qos.aal == ATM_AAL5 ?
521 uPD98401_RXVC_AR : 0) | cells,chan*VC_SIZE/4+1);
522 zpokel(zatm_dev,0,chan*VC_SIZE/4+2);
523 zatm_vcc->rx_chan = chan;
524 zatm_dev->rx_map[chan] = vcc;
525 spin_unlock_irqrestore(&zatm_dev->lock, flags);
530 static int open_rx_second(struct atm_vcc *vcc)
532 struct zatm_dev *zatm_dev;
533 struct zatm_vcc *zatm_vcc;
537 DPRINTK("open_rx_second (0x%x)\n",inb_p(0xc053));
538 zatm_dev = ZATM_DEV(vcc->dev);
539 zatm_vcc = ZATM_VCC(vcc);
540 if (!zatm_vcc->rx_chan) return 0;
541 spin_lock_irqsave(&zatm_dev->lock, flags);
542 /* should also handle VPI @@@ */
544 shift = (1-(vcc->vci & 1)) << 4;
545 zpokel(zatm_dev,(zpeekl(zatm_dev,pos) & ~(0xffff << shift)) |
546 ((zatm_vcc->rx_chan | uPD98401_RXLT_ENBL) << shift),pos);
547 spin_unlock_irqrestore(&zatm_dev->lock, flags);
552 static void close_rx(struct atm_vcc *vcc)
554 struct zatm_dev *zatm_dev;
555 struct zatm_vcc *zatm_vcc;
559 zatm_vcc = ZATM_VCC(vcc);
560 zatm_dev = ZATM_DEV(vcc->dev);
561 if (!zatm_vcc->rx_chan) return;
562 DPRINTK("close_rx\n");
563 /* disable receiver */
564 if (vcc->vpi != ATM_VPI_UNSPEC && vcc->vci != ATM_VCI_UNSPEC) {
565 spin_lock_irqsave(&zatm_dev->lock, flags);
567 shift = (1-(vcc->vci & 1)) << 4;
568 zpokel(zatm_dev,zpeekl(zatm_dev,pos) & ~(0xffff << shift),pos);
570 zout(uPD98401_NOP,CMR);
572 zout(uPD98401_NOP,CMR);
573 spin_unlock_irqrestore(&zatm_dev->lock, flags);
575 spin_lock_irqsave(&zatm_dev->lock, flags);
577 zout(uPD98401_DEACT_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
578 uPD98401_CHAN_ADDR_SHIFT),CMR);
580 udelay(10); /* why oh why ... ? */
581 zout(uPD98401_CLOSE_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
582 uPD98401_CHAN_ADDR_SHIFT),CMR);
584 if (!(zin(CMR) & uPD98401_CHAN_ADDR))
585 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close RX channel "
586 "%d\n",vcc->dev->number,zatm_vcc->rx_chan);
587 spin_unlock_irqrestore(&zatm_dev->lock, flags);
588 zatm_dev->rx_map[zatm_vcc->rx_chan] = NULL;
589 zatm_vcc->rx_chan = 0;
590 unuse_pool(vcc->dev,zatm_vcc->pool);
594 static int start_rx(struct atm_dev *dev)
596 struct zatm_dev *zatm_dev;
599 DPRINTK("start_rx\n");
600 zatm_dev = ZATM_DEV(dev);
601 size = sizeof(struct atm_vcc *)*zatm_dev->chans;
602 zatm_dev->rx_map = (struct atm_vcc **) kmalloc(size,GFP_KERNEL);
603 if (!zatm_dev->rx_map) return -ENOMEM;
604 memset(zatm_dev->rx_map,0,size);
605 /* set VPI/VCI split (use all VCIs and give what's left to VPIs) */
606 zpokel(zatm_dev,(1 << dev->ci_range.vci_bits)-1,uPD98401_VRR);
607 /* prepare free buffer pools */
608 for (i = 0; i <= ZATM_LAST_POOL; i++) {
609 zatm_dev->pool_info[i].ref_count = 0;
610 zatm_dev->pool_info[i].rqa_count = 0;
611 zatm_dev->pool_info[i].rqu_count = 0;
612 zatm_dev->pool_info[i].low_water = LOW_MARK;
613 zatm_dev->pool_info[i].high_water = HIGH_MARK;
614 zatm_dev->pool_info[i].offset = 0;
615 zatm_dev->pool_info[i].next_off = 0;
616 zatm_dev->pool_info[i].next_cnt = 0;
617 zatm_dev->pool_info[i].next_thres = OFF_CNG_THRES;
623 /*----------------------------------- TX ------------------------------------*/
626 static int do_tx(struct sk_buff *skb)
629 struct zatm_dev *zatm_dev;
630 struct zatm_vcc *zatm_vcc;
634 EVENT("do_tx\n",0,0);
635 DPRINTK("sending skb %p\n",skb);
636 vcc = ATM_SKB(skb)->vcc;
637 zatm_dev = ZATM_DEV(vcc->dev);
638 zatm_vcc = ZATM_VCC(vcc);
639 EVENT("iovcnt=%d\n",skb_shinfo(skb)->nr_frags,0);
640 spin_lock_irqsave(&zatm_dev->lock, flags);
641 if (!skb_shinfo(skb)->nr_frags) {
642 if (zatm_vcc->txing == RING_ENTRIES-1) {
643 spin_unlock_irqrestore(&zatm_dev->lock, flags);
647 dsc = zatm_vcc->ring+zatm_vcc->ring_curr;
648 zatm_vcc->ring_curr = (zatm_vcc->ring_curr+RING_WORDS) &
649 (RING_ENTRIES*RING_WORDS-1);
652 dsc[3] = virt_to_bus(skb->data);
654 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP | uPD98401_TXPD_SM
655 | (vcc->qos.aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
656 (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
657 uPD98401_CLPM_1 : uPD98401_CLPM_0));
658 EVENT("dsc (0x%lx)\n",(unsigned long) dsc,0);
661 printk("NONONONOO!!!!\n");
667 dsc = (u32 *) kmalloc(uPD98401_TXPD_SIZE*2+
668 uPD98401_TXBD_SIZE*ATM_SKB(skb)->iovcnt,GFP_ATOMIC);
670 if (vcc->pop) vcc->pop(vcc,skb);
671 else dev_kfree_skb_irq(skb);
674 /* @@@ should check alignment */
676 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP |
677 (vcc->aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
678 (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
679 uPD98401_CLPM_1 : uPD98401_CLPM_0));
681 dsc[2] = ATM_SKB(skb)->iovcnt*uPD98401_TXBD_SIZE;
682 dsc[3] = virt_to_bus(put);
683 for (i = 0; i < ATM_SKB(skb)->iovcnt; i++) {
684 *put++ = ((struct iovec *) skb->data)[i].iov_len;
685 *put++ = virt_to_bus(((struct iovec *)
686 skb->data)[i].iov_base);
688 put[-2] |= uPD98401_TXBD_LAST;
691 ZATM_PRV_DSC(skb) = dsc;
692 skb_queue_tail(&zatm_vcc->tx_queue,skb);
693 DPRINTK("QRP=0x%08lx\n",zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
696 zout(uPD98401_TX_READY | (zatm_vcc->tx_chan <<
697 uPD98401_CHAN_ADDR_SHIFT),CMR);
698 spin_unlock_irqrestore(&zatm_dev->lock, flags);
704 static inline void dequeue_tx(struct atm_vcc *vcc)
706 struct zatm_vcc *zatm_vcc;
709 EVENT("dequeue_tx\n",0,0);
710 zatm_vcc = ZATM_VCC(vcc);
711 skb = skb_dequeue(&zatm_vcc->tx_queue);
713 printk(KERN_CRIT DEV_LABEL "(itf %d): dequeue_tx but not "
714 "txing\n",vcc->dev->number);
717 #if 0 /* @@@ would fail on CLP */
718 if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
719 uPD98401_TXPD_SM | uPD98401_TXPD_AAL5)) printk("@#*$!!!! (%08x)\n",
722 *ZATM_PRV_DSC(skb) = 0; /* mark as invalid */
724 if (vcc->pop) vcc->pop(vcc,skb);
725 else dev_kfree_skb_irq(skb);
726 while ((skb = skb_dequeue(&zatm_vcc->backlog)))
727 if (do_tx(skb) == RING_BUSY) {
728 skb_queue_head(&zatm_vcc->backlog,skb);
731 atomic_inc(&vcc->stats->tx);
732 wake_up(&zatm_vcc->tx_wait);
736 static void poll_tx(struct atm_dev *dev,int mbx)
738 struct zatm_dev *zatm_dev;
742 EVENT("poll_tx\n",0,0);
743 zatm_dev = ZATM_DEV(dev);
744 pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
745 while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
751 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
754 chan = (data & uPD98401_TXI_CONN) >> uPD98401_TXI_CONN_SHIFT;
755 EVENT("addr = 0x%lx, data = 0x%08x,",(unsigned long) addr,
757 EVENT("chan = %d\n",chan,0);
760 chan = (zatm_dev->mbx_start[mbx][pos >> 2] & uPD98401_TXI_CONN)
761 >> uPD98401_TXI_CONN_SHIFT;
763 if (chan < zatm_dev->chans && zatm_dev->tx_map[chan])
764 dequeue_tx(zatm_dev->tx_map[chan]);
766 printk(KERN_CRIT DEV_LABEL "(itf %d): TX indication "
767 "for non-existing channel %d\n",dev->number,chan);
770 if (((pos += 4) & 0xffff) == zatm_dev->mbx_end[mbx])
771 pos = zatm_dev->mbx_start[mbx];
773 zout(pos & 0xffff,MTA(mbx));
778 * BUG BUG BUG: Doesn't handle "new-style" rate specification yet.
781 static int alloc_shaper(struct atm_dev *dev,int *pcr,int min,int max,int ubr)
783 struct zatm_dev *zatm_dev;
788 DPRINTK("alloc_shaper (min = %d, max = %d)\n",min,max);
789 zatm_dev = ZATM_DEV(dev);
790 if (!zatm_dev->free_shapers) return -EAGAIN;
791 for (shaper = 0; !((zatm_dev->free_shapers >> shaper) & 1); shaper++);
792 zatm_dev->free_shapers &= ~1 << shaper;
796 zatm_dev->ubr_ref_cnt++;
797 zatm_dev->ubr = shaper;
807 m = ATM_OC3_PCR*255/min;
811 if (max > zatm_dev->tx_bw) max = zatm_dev->tx_bw;
818 m = (ATM_OC3_PCR*255+max-1)/max;
822 printk(KERN_CRIT DEV_LABEL "shaper algorithm botched "
823 "[%d,%d] -> i=%ld,m=%ld\n",min,max,i,m);
826 *pcr = i*ATM_OC3_PCR/m;
827 c = 20; /* @@@ should use max_cdv ! */
828 if ((min && *pcr < min) || (max && *pcr > max)) return -EINVAL;
829 if (zatm_dev->tx_bw < *pcr) return -EAGAIN;
830 zatm_dev->tx_bw -= *pcr;
832 spin_lock_irqsave(&zatm_dev->lock, flags);
833 DPRINTK("i = %d, m = %d, PCR = %d\n",i,m,*pcr);
834 zpokel(zatm_dev,(i << uPD98401_IM_I_SHIFT) | m,uPD98401_IM(shaper));
835 zpokel(zatm_dev,c << uPD98401_PC_C_SHIFT,uPD98401_PC(shaper));
836 zpokel(zatm_dev,0,uPD98401_X(shaper));
837 zpokel(zatm_dev,0,uPD98401_Y(shaper));
838 zpokel(zatm_dev,uPD98401_PS_E,uPD98401_PS(shaper));
839 spin_unlock_irqrestore(&zatm_dev->lock, flags);
844 static void dealloc_shaper(struct atm_dev *dev,int shaper)
846 struct zatm_dev *zatm_dev;
849 zatm_dev = ZATM_DEV(dev);
850 if (shaper == zatm_dev->ubr) {
851 if (--zatm_dev->ubr_ref_cnt) return;
854 spin_lock_irqsave(&zatm_dev->lock, flags);
855 zpokel(zatm_dev,zpeekl(zatm_dev,uPD98401_PS(shaper)) & ~uPD98401_PS_E,
856 uPD98401_PS(shaper));
857 spin_unlock_irqrestore(&zatm_dev->lock, flags);
858 zatm_dev->free_shapers |= 1 << shaper;
862 static void close_tx(struct atm_vcc *vcc)
864 struct zatm_dev *zatm_dev;
865 struct zatm_vcc *zatm_vcc;
871 zatm_vcc = ZATM_VCC(vcc);
872 zatm_dev = ZATM_DEV(vcc->dev);
873 chan = zatm_vcc->tx_chan;
875 DPRINTK("close_tx\n");
876 while (skb_peek(&zatm_vcc->backlog)) {
878 printk("waiting for backlog to drain ...\n");
882 sleep_on(&zatm_vcc->tx_wait);
885 while ((skb = skb_peek(&zatm_vcc->tx_queue))) {
887 printk("waiting for TX queue to drain ... %p\n",skb);
891 DPRINTK("waiting for TX queue to drain ... %p\n",skb);
892 sleep_on(&zatm_vcc->tx_wait);
894 spin_lock_irqsave(&zatm_dev->lock, flags);
897 zout(uPD98401_DEACT_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
900 zout(uPD98401_CLOSE_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
902 if (!(zin(CMR) & uPD98401_CHAN_ADDR))
903 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close TX channel "
904 "%d\n",vcc->dev->number,chan);
905 spin_unlock_irqrestore(&zatm_dev->lock, flags);
906 zatm_vcc->tx_chan = 0;
907 zatm_dev->tx_map[chan] = NULL;
908 if (zatm_vcc->shaper != zatm_dev->ubr) {
909 zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
910 dealloc_shaper(vcc->dev,zatm_vcc->shaper);
912 if (zatm_vcc->ring) kfree(zatm_vcc->ring);
916 static int open_tx_first(struct atm_vcc *vcc)
918 struct zatm_dev *zatm_dev;
919 struct zatm_vcc *zatm_vcc;
925 DPRINTK("open_tx_first\n");
926 zatm_dev = ZATM_DEV(vcc->dev);
927 zatm_vcc = ZATM_VCC(vcc);
928 zatm_vcc->tx_chan = 0;
929 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
930 spin_lock_irqsave(&zatm_dev->lock, flags);
932 zout(uPD98401_OPEN_CHAN,CMR);
934 DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
935 chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
936 spin_unlock_irqrestore(&zatm_dev->lock, flags);
937 DPRINTK("chan is %d\n",chan);
938 if (!chan) return -EAGAIN;
939 unlimited = vcc->qos.txtp.traffic_class == ATM_UBR &&
940 (!vcc->qos.txtp.max_pcr || vcc->qos.txtp.max_pcr == ATM_MAX_PCR ||
941 vcc->qos.txtp.max_pcr >= ATM_OC3_PCR);
942 if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr;
944 if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU;
945 if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr,
946 vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,unlimited))
949 return zatm_vcc->shaper;
951 if (pcr > ATM_OC3_PCR) pcr = ATM_OC3_PCR;
952 vcc->qos.txtp.min_pcr = vcc->qos.txtp.max_pcr = pcr;
954 zatm_vcc->tx_chan = chan;
955 skb_queue_head_init(&zatm_vcc->tx_queue);
956 init_waitqueue_head(&zatm_vcc->tx_wait);
957 /* initialize ring */
958 zatm_vcc->ring = kmalloc(RING_SIZE,GFP_KERNEL);
959 if (!zatm_vcc->ring) return -ENOMEM;
960 memset(zatm_vcc->ring,0,RING_SIZE);
961 loop = zatm_vcc->ring+RING_ENTRIES*RING_WORDS;
962 loop[0] = uPD98401_TXPD_V;
963 loop[1] = loop[2] = 0;
964 loop[3] = virt_to_bus(zatm_vcc->ring);
965 zatm_vcc->ring_curr = 0;
967 skb_queue_head_init(&zatm_vcc->backlog);
968 zpokel(zatm_dev,virt_to_bus(zatm_vcc->ring),
969 chan*VC_SIZE/4+uPD98401_TXVC_QRP);
974 static int open_tx_second(struct atm_vcc *vcc)
976 struct zatm_dev *zatm_dev;
977 struct zatm_vcc *zatm_vcc;
980 DPRINTK("open_tx_second\n");
981 zatm_dev = ZATM_DEV(vcc->dev);
982 zatm_vcc = ZATM_VCC(vcc);
983 if (!zatm_vcc->tx_chan) return 0;
984 /* set up VC descriptor */
985 spin_lock_irqsave(&zatm_dev->lock, flags);
986 zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4);
987 zpokel(zatm_dev,uPD98401_TXVC_L | (zatm_vcc->shaper <<
988 uPD98401_TXVC_SHP_SHIFT) | (vcc->vpi << uPD98401_TXVC_VPI_SHIFT) |
989 vcc->vci,zatm_vcc->tx_chan*VC_SIZE/4+1);
990 zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4+2);
991 spin_unlock_irqrestore(&zatm_dev->lock, flags);
992 zatm_dev->tx_map[zatm_vcc->tx_chan] = vcc;
997 static int start_tx(struct atm_dev *dev)
999 struct zatm_dev *zatm_dev;
1002 DPRINTK("start_tx\n");
1003 zatm_dev = ZATM_DEV(dev);
1004 zatm_dev->tx_map = (struct atm_vcc **) kmalloc(sizeof(struct atm_vcc *)*
1005 zatm_dev->chans,GFP_KERNEL);
1006 if (!zatm_dev->tx_map) return -ENOMEM;
1007 zatm_dev->tx_bw = ATM_OC3_PCR;
1008 zatm_dev->free_shapers = (1 << NR_SHAPERS)-1;
1010 zatm_dev->ubr_ref_cnt = 0;
1011 /* initialize shapers */
1012 for (i = 0; i < NR_SHAPERS; i++) zpokel(zatm_dev,0,uPD98401_PS(i));
1017 /*------------------------------- interrupts --------------------------------*/
1020 static irqreturn_t zatm_int(int irq,void *dev_id,struct pt_regs *regs)
1022 struct atm_dev *dev;
1023 struct zatm_dev *zatm_dev;
1028 zatm_dev = ZATM_DEV(dev);
1029 while ((reason = zin(GSR))) {
1031 EVENT("reason 0x%x\n",reason,0);
1032 if (reason & uPD98401_INT_PI) {
1033 EVENT("PHY int\n",0,0);
1034 dev->phy->interrupt(dev);
1036 if (reason & uPD98401_INT_RQA) {
1037 unsigned long pools;
1041 EVENT("RQA (0x%08x)\n",pools,0);
1042 for (i = 0; pools; i++) {
1045 zatm_dev->pool_info[i].rqa_count++;
1050 if (reason & uPD98401_INT_RQU) {
1051 unsigned long pools;
1054 printk(KERN_WARNING DEV_LABEL "(itf %d): RQU 0x%08lx\n",
1057 for (i = 0; pools; i++) {
1060 zatm_dev->pool_info[i].rqu_count++;
1065 /* don't handle RD */
1066 if (reason & uPD98401_INT_SPE)
1067 printk(KERN_ALERT DEV_LABEL "(itf %d): system parity "
1068 "error at 0x%08x\n",dev->number,zin(ADDR));
1069 if (reason & uPD98401_INT_CPE)
1070 printk(KERN_ALERT DEV_LABEL "(itf %d): control memory "
1071 "parity error at 0x%08x\n",dev->number,zin(ADDR));
1072 if (reason & uPD98401_INT_SBE) {
1073 printk(KERN_ALERT DEV_LABEL "(itf %d): system bus "
1074 "error at 0x%08x\n",dev->number,zin(ADDR));
1077 /* don't handle IND */
1078 if (reason & uPD98401_INT_MF) {
1079 printk(KERN_CRIT DEV_LABEL "(itf %d): mailbox full "
1080 "(0x%x)\n",dev->number,(reason & uPD98401_INT_MF)
1081 >> uPD98401_INT_MF_SHIFT);
1083 /* @@@ should try to recover */
1085 if (reason & uPD98401_INT_MM) {
1086 if (reason & 1) poll_rx(dev,0);
1087 if (reason & 2) poll_rx(dev,1);
1088 if (reason & 4) poll_tx(dev,2);
1089 if (reason & 8) poll_tx(dev,3);
1091 /* @@@ handle RCRn */
1093 return IRQ_RETVAL(handled);
1097 /*----------------------------- (E)EPROM access -----------------------------*/
1100 static void __init eprom_set(struct zatm_dev *zatm_dev,unsigned long value,
1105 if ((error = pci_write_config_dword(zatm_dev->pci_dev,cmd,value)))
1106 printk(KERN_ERR DEV_LABEL ": PCI write failed (0x%02x)\n",
1111 static unsigned long __init eprom_get(struct zatm_dev *zatm_dev,
1117 if ((error = pci_read_config_dword(zatm_dev->pci_dev,cmd,&value)))
1118 printk(KERN_ERR DEV_LABEL ": PCI read failed (0x%02x)\n",
1124 static void __init eprom_put_bits(struct zatm_dev *zatm_dev,
1125 unsigned long data,int bits,unsigned short cmd)
1127 unsigned long value;
1130 for (i = bits-1; i >= 0; i--) {
1131 value = ZEPROM_CS | (((data >> i) & 1) ? ZEPROM_DI : 0);
1132 eprom_set(zatm_dev,value,cmd);
1133 eprom_set(zatm_dev,value | ZEPROM_SK,cmd);
1134 eprom_set(zatm_dev,value,cmd);
1139 static void __init eprom_get_byte(struct zatm_dev *zatm_dev,
1140 unsigned char *byte,unsigned short cmd)
1145 for (i = 8; i; i--) {
1146 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1147 eprom_set(zatm_dev,ZEPROM_CS | ZEPROM_SK,cmd);
1149 if (eprom_get(zatm_dev,cmd) & ZEPROM_DO) *byte |= 1;
1150 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1155 static unsigned char __init eprom_try_esi(struct atm_dev *dev,
1156 unsigned short cmd,int offset,int swap)
1158 unsigned char buf[ZEPROM_SIZE];
1159 struct zatm_dev *zatm_dev;
1162 zatm_dev = ZATM_DEV(dev);
1163 for (i = 0; i < ZEPROM_SIZE; i += 2) {
1164 eprom_set(zatm_dev,ZEPROM_CS,cmd); /* select EPROM */
1165 eprom_put_bits(zatm_dev,ZEPROM_CMD_READ,ZEPROM_CMD_LEN,cmd);
1166 eprom_put_bits(zatm_dev,i >> 1,ZEPROM_ADDR_LEN,cmd);
1167 eprom_get_byte(zatm_dev,buf+i+swap,cmd);
1168 eprom_get_byte(zatm_dev,buf+i+1-swap,cmd);
1169 eprom_set(zatm_dev,0,cmd); /* deselect EPROM */
1171 memcpy(dev->esi,buf+offset,ESI_LEN);
1172 return memcmp(dev->esi,"\0\0\0\0\0",ESI_LEN); /* assumes ESI_LEN == 6 */
1176 static void __init eprom_get_esi(struct atm_dev *dev)
1178 if (eprom_try_esi(dev,ZEPROM_V1_REG,ZEPROM_V1_ESI_OFF,1)) return;
1179 (void) eprom_try_esi(dev,ZEPROM_V2_REG,ZEPROM_V2_ESI_OFF,0);
1183 /*--------------------------------- entries ---------------------------------*/
1186 static int __init zatm_init(struct atm_dev *dev)
1188 struct zatm_dev *zatm_dev;
1189 struct pci_dev *pci_dev;
1190 unsigned short command;
1191 unsigned char revision;
1193 unsigned long t0,t1,t2;
1195 DPRINTK(">zatm_init\n");
1196 zatm_dev = ZATM_DEV(dev);
1197 spin_lock_init(&zatm_dev->lock);
1198 pci_dev = zatm_dev->pci_dev;
1199 zatm_dev->base = pci_resource_start(pci_dev, 0);
1200 zatm_dev->irq = pci_dev->irq;
1201 if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command)) ||
1202 (error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision))) {
1203 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
1207 if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
1208 command | PCI_COMMAND_IO | PCI_COMMAND_MASTER))) {
1209 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable IO (0x%02x)"
1210 "\n",dev->number,error);
1214 printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
1215 dev->number,revision,zatm_dev->base,zatm_dev->irq);
1216 /* reset uPD98401 */
1218 while (!(zin(GSR) & uPD98401_INT_IND));
1219 zout(uPD98401_GMR_ONE /*uPD98401_BURST4*/,GMR);
1220 last = MAX_CRAM_SIZE;
1221 for (i = last-RAM_INCREMENT; i >= 0; i -= RAM_INCREMENT) {
1222 zpokel(zatm_dev,0x55555555,i);
1223 if (zpeekl(zatm_dev,i) != 0x55555555) last = i;
1225 zpokel(zatm_dev,0xAAAAAAAA,i);
1226 if (zpeekl(zatm_dev,i) != 0xAAAAAAAA) last = i;
1227 else zpokel(zatm_dev,i,i);
1230 for (i = 0; i < last; i += RAM_INCREMENT)
1231 if (zpeekl(zatm_dev,i) != i) break;
1232 zatm_dev->mem = i << 2;
1233 while (i) zpokel(zatm_dev,0,--i);
1234 /* reset again to rebuild memory pointers */
1236 while (!(zin(GSR) & uPD98401_INT_IND));
1237 zout(uPD98401_GMR_ONE | uPD98401_BURST8 | uPD98401_BURST4 |
1238 uPD98401_BURST2 | uPD98401_GMR_PM | uPD98401_GMR_DR,GMR);
1239 /* TODO: should shrink allocation now */
1240 printk("mem=%dkB,%s (",zatm_dev->mem >> 10,zatm_dev->copper ? "UTP" :
1242 for (i = 0; i < ESI_LEN; i++)
1243 printk("%02X%s",dev->esi[i],i == ESI_LEN-1 ? ")\n" : "-");
1245 unsigned long flags;
1247 spin_lock_irqsave(&zatm_dev->lock, flags);
1248 t0 = zpeekl(zatm_dev,uPD98401_TSR);
1250 t1 = zpeekl(zatm_dev,uPD98401_TSR);
1252 t2 = zpeekl(zatm_dev,uPD98401_TSR);
1253 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1255 while (t0 > t1 || t1 > t2); /* loop if wrapping ... */
1256 zatm_dev->khz = t2-2*t1+t0;
1257 printk(KERN_NOTICE DEV_LABEL "(itf %d): uPD98401 %d.%d at %d.%03d "
1258 "MHz\n",dev->number,
1259 (zin(VER) & uPD98401_MAJOR) >> uPD98401_MAJOR_SHIFT,
1260 zin(VER) & uPD98401_MINOR,zatm_dev->khz/1000,zatm_dev->khz % 1000);
1261 return uPD98402_init(dev);
1265 static int __init zatm_start(struct atm_dev *dev)
1267 struct zatm_dev *zatm_dev;
1272 DPRINTK("zatm_start\n");
1273 zatm_dev = ZATM_DEV(dev);
1274 zatm_dev->rx_map = zatm_dev->tx_map = NULL;
1275 for (i = 0; i < NR_MBX; i++)
1276 zatm_dev->mbx_start[i] = 0;
1277 if (request_irq(zatm_dev->irq,&zatm_int,SA_SHIRQ,DEV_LABEL,dev)) {
1278 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
1279 dev->number,zatm_dev->irq);
1282 request_region(zatm_dev->base,uPD98401_PORTS,DEV_LABEL);
1283 /* define memory regions */
1285 if (NR_SHAPERS*SHAPER_SIZE > pools*POOL_SIZE)
1286 pools = NR_SHAPERS*SHAPER_SIZE/POOL_SIZE;
1287 vccs = (zatm_dev->mem-NR_SHAPERS*SHAPER_SIZE-pools*POOL_SIZE)/
1288 (2*VC_SIZE+RX_SIZE);
1290 for (rx = 1; rx < vccs; rx <<= 1) ld++;
1291 dev->ci_range.vpi_bits = 0; /* @@@ no VPI for now */
1292 dev->ci_range.vci_bits = ld;
1293 dev->link_rate = ATM_OC3_PCR;
1294 zatm_dev->chans = vccs; /* ??? */
1295 curr = rx*RX_SIZE/4;
1296 DPRINTK("RX pool 0x%08lx\n",curr);
1297 zpokel(zatm_dev,curr,uPD98401_PMA); /* receive pool */
1298 zatm_dev->pool_base = curr;
1299 curr += pools*POOL_SIZE/4;
1300 DPRINTK("Shapers 0x%08lx\n",curr);
1301 zpokel(zatm_dev,curr,uPD98401_SMA); /* shapers */
1302 curr += NR_SHAPERS*SHAPER_SIZE/4;
1303 DPRINTK("Free 0x%08lx\n",curr);
1304 zpokel(zatm_dev,curr,uPD98401_TOS); /* free pool */
1305 printk(KERN_INFO DEV_LABEL "(itf %d): %d shapers, %d pools, %d RX, "
1306 "%ld VCs\n",dev->number,NR_SHAPERS,pools,rx,
1307 (zatm_dev->mem-curr*4)/VC_SIZE);
1308 /* create mailboxes */
1309 for (i = 0; i < NR_MBX; i++)
1310 if (mbx_entries[i]) {
1313 here = (unsigned long) kmalloc(2*MBX_SIZE(i),
1319 if ((here^(here+MBX_SIZE(i))) & ~0xffffUL)/* paranoia */
1320 here = (here & ~0xffffUL)+0x10000;
1321 zatm_dev->mbx_start[i] = here;
1322 if ((here^virt_to_bus((void *) here)) & 0xffff) {
1323 printk(KERN_ERR DEV_LABEL "(itf %d): system "
1324 "bus incompatible with driver\n",
1329 DPRINTK("mbx@0x%08lx-0x%08lx\n",here,here+MBX_SIZE(i));
1330 zatm_dev->mbx_end[i] = (here+MBX_SIZE(i)) & 0xffff;
1331 zout(virt_to_bus((void *) here) >> 16,MSH(i));
1332 zout(virt_to_bus((void *) here),MSL(i));
1333 zout((here+MBX_SIZE(i)) & 0xffff,MBA(i));
1334 zout(here & 0xffff,MTA(i));
1335 zout(here & 0xffff,MWA(i));
1337 error = start_tx(dev);
1338 if (error) goto out;
1339 error = start_rx(dev);
1340 if (error) goto out;
1341 error = dev->phy->start(dev);
1342 if (error) goto out;
1343 zout(0xffffffff,IMR); /* enable interrupts */
1344 /* enable TX & RX */
1345 zout(zin(GMR) | uPD98401_GMR_SE | uPD98401_GMR_RE,GMR);
1348 for (i = 0; i < NR_MBX; i++)
1349 if (zatm_dev->mbx_start[i] != 0)
1350 kfree((void *) zatm_dev->mbx_start[i]);
1351 if (zatm_dev->rx_map != NULL)
1352 kfree(zatm_dev->rx_map);
1353 if (zatm_dev->tx_map != NULL)
1354 kfree(zatm_dev->tx_map);
1355 free_irq(zatm_dev->irq, dev);
1360 static void zatm_close(struct atm_vcc *vcc)
1362 DPRINTK(">zatm_close\n");
1363 if (!ZATM_VCC(vcc)) return;
1364 clear_bit(ATM_VF_READY,&vcc->flags);
1366 EVENT("close_tx\n",0,0);
1368 DPRINTK("zatm_close: done waiting\n");
1369 /* deallocate memory */
1370 kfree(ZATM_VCC(vcc));
1371 vcc->dev_data = NULL;
1372 clear_bit(ATM_VF_ADDR,&vcc->flags);
1376 static int zatm_open(struct atm_vcc *vcc)
1378 struct zatm_dev *zatm_dev;
1379 struct zatm_vcc *zatm_vcc;
1380 short vpi = vcc->vpi;
1384 DPRINTK(">zatm_open\n");
1385 zatm_dev = ZATM_DEV(vcc->dev);
1386 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
1387 vcc->dev_data = NULL;
1388 if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
1389 set_bit(ATM_VF_ADDR,&vcc->flags);
1390 if (vcc->qos.aal != ATM_AAL5) return -EINVAL; /* @@@ AAL0 */
1391 DPRINTK(DEV_LABEL "(itf %d): open %d.%d\n",vcc->dev->number,vcc->vpi,
1393 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
1394 zatm_vcc = kmalloc(sizeof(struct zatm_vcc),GFP_KERNEL);
1396 clear_bit(ATM_VF_ADDR,&vcc->flags);
1399 vcc->dev_data = zatm_vcc;
1400 ZATM_VCC(vcc)->tx_chan = 0; /* for zatm_close after open_rx */
1401 if ((error = open_rx_first(vcc))) {
1405 if ((error = open_tx_first(vcc))) {
1410 if (vci == ATM_VPI_UNSPEC || vpi == ATM_VCI_UNSPEC) return 0;
1411 if ((error = open_rx_second(vcc))) {
1415 if ((error = open_tx_second(vcc))) {
1419 set_bit(ATM_VF_READY,&vcc->flags);
1424 static int zatm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
1426 printk("Not yet implemented\n");
1432 static int zatm_ioctl(struct atm_dev *dev,unsigned int cmd,void *arg)
1434 struct zatm_dev *zatm_dev;
1435 unsigned long flags;
1437 zatm_dev = ZATM_DEV(dev);
1440 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1444 struct zatm_pool_info info;
1448 &((struct zatm_pool_req *) arg)->pool_num))
1450 if (pool < 0 || pool > ZATM_LAST_POOL)
1452 spin_lock_irqsave(&zatm_dev->lock, flags);
1453 info = zatm_dev->pool_info[pool];
1454 if (cmd == ZATM_GETPOOLZ) {
1455 zatm_dev->pool_info[pool].rqa_count = 0;
1456 zatm_dev->pool_info[pool].rqu_count = 0;
1458 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1459 return copy_to_user(
1460 &((struct zatm_pool_req *) arg)->info,
1461 &info,sizeof(info)) ? -EFAULT : 0;
1465 struct zatm_pool_info info;
1468 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1470 &((struct zatm_pool_req *) arg)->pool_num))
1472 if (pool < 0 || pool > ZATM_LAST_POOL)
1474 if (copy_from_user(&info,
1475 &((struct zatm_pool_req *) arg)->info,
1476 sizeof(info))) return -EFAULT;
1477 if (!info.low_water)
1478 info.low_water = zatm_dev->
1479 pool_info[pool].low_water;
1480 if (!info.high_water)
1481 info.high_water = zatm_dev->
1482 pool_info[pool].high_water;
1483 if (!info.next_thres)
1484 info.next_thres = zatm_dev->
1485 pool_info[pool].next_thres;
1486 if (info.low_water >= info.high_water ||
1489 spin_lock_irqsave(&zatm_dev->lock, flags);
1490 zatm_dev->pool_info[pool].low_water =
1492 zatm_dev->pool_info[pool].high_water =
1494 zatm_dev->pool_info[pool].next_thres =
1496 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1500 if (!dev->phy->ioctl) return -ENOIOCTLCMD;
1501 return dev->phy->ioctl(dev,cmd,arg);
1506 static int zatm_getsockopt(struct atm_vcc *vcc,int level,int optname,
1507 void *optval,int optlen)
1513 static int zatm_setsockopt(struct atm_vcc *vcc,int level,int optname,
1514 void *optval,int optlen)
1519 static int zatm_send(struct atm_vcc *vcc,struct sk_buff *skb)
1523 EVENT(">zatm_send 0x%lx\n",(unsigned long) skb,0);
1524 if (!ZATM_VCC(vcc)->tx_chan || !test_bit(ATM_VF_READY,&vcc->flags)) {
1525 if (vcc->pop) vcc->pop(vcc,skb);
1526 else dev_kfree_skb(skb);
1530 printk(KERN_CRIT "!skb in zatm_send ?\n");
1531 if (vcc->pop) vcc->pop(vcc,skb);
1534 ATM_SKB(skb)->vcc = vcc;
1536 if (error != RING_BUSY) return error;
1537 skb_queue_tail(&ZATM_VCC(vcc)->backlog,skb);
1542 static void zatm_phy_put(struct atm_dev *dev,unsigned char value,
1545 struct zatm_dev *zatm_dev;
1547 zatm_dev = ZATM_DEV(dev);
1550 zout(uPD98401_IND_ACC | uPD98401_IA_B0 |
1551 (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1555 static unsigned char zatm_phy_get(struct atm_dev *dev,unsigned long addr)
1557 struct zatm_dev *zatm_dev;
1559 zatm_dev = ZATM_DEV(dev);
1561 zout(uPD98401_IND_ACC | uPD98401_IA_B0 | uPD98401_IA_RW |
1562 (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1564 return zin(CER) & 0xff;
1568 static const struct atmdev_ops ops = {
1570 .close = zatm_close,
1571 .ioctl = zatm_ioctl,
1572 .getsockopt = zatm_getsockopt,
1573 .setsockopt = zatm_setsockopt,
1575 .phy_put = zatm_phy_put,
1576 .phy_get = zatm_phy_get,
1577 .change_qos = zatm_change_qos,
1580 static int __init zatm_module_init(void)
1582 struct atm_dev *dev;
1583 struct zatm_dev *zatm_dev;
1586 zatm_dev = (struct zatm_dev *) kmalloc(sizeof(struct zatm_dev),
1588 if (!zatm_dev) return -ENOMEM;
1590 for (type = 0; type < 2; type++) {
1591 struct pci_dev *pci_dev;
1594 while ((pci_dev = pci_find_device(PCI_VENDOR_ID_ZEITNET,type ?
1595 PCI_DEVICE_ID_ZEITNET_1225 : PCI_DEVICE_ID_ZEITNET_1221,
1597 if (pci_enable_device(pci_dev)) break;
1598 dev = atm_dev_register(DEV_LABEL,&ops,-1,NULL);
1600 zatm_dev->pci_dev = pci_dev;
1601 dev->dev_data = zatm_dev;
1602 zatm_dev->copper = type;
1603 if (zatm_init(dev) || zatm_start(dev)) {
1604 atm_dev_deregister(dev);
1607 zatm_dev->more = zatm_boards;
1610 zatm_dev = (struct zatm_dev *) kmalloc(sizeof(struct
1611 zatm_dev),GFP_KERNEL);
1613 printk(KERN_EMERG "zatm.c: memory shortage\n");
1624 MODULE_LICENSE("GPL");
1626 module_init(zatm_module_init);
1627 /* module_exit not defined so not unloadable */