1 /* drivers/atm/zatm.c - ZeitNet ZN122x device driver */
3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
6 #include <linux/module.h>
7 #include <linux/kernel.h>
10 #include <linux/errno.h>
11 #include <linux/atm.h>
12 #include <linux/atmdev.h>
13 #include <linux/sonet.h>
14 #include <linux/skbuff.h>
15 #include <linux/netdevice.h>
16 #include <linux/delay.h>
17 #include <linux/uio.h>
18 #include <linux/init.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/atm_zatm.h>
21 #include <linux/capability.h>
22 #include <linux/bitops.h>
23 #include <linux/wait.h>
24 #include <linux/slab.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
52 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
54 #define DPRINTK(format,args...)
57 #ifndef CONFIG_ATM_ZATM_DEBUG
65 static void event_dump(void)
74 * NULL pointer checking
77 #define NULLCHECK(x) \
78 if ((unsigned long) (x) < 0x30) printk(KERN_CRIT #x "==0x%x\n", (int) (x))
81 * Very extensive activity logging. Greatly improves bug detection speed but
82 * costs a few Mbps if enabled.
87 static const char *ev[EV];
88 static unsigned long ev_a[EV],ev_b[EV];
92 static void EVENT(const char *s,unsigned long a,unsigned long b)
101 static void event_dump(void)
105 printk(KERN_NOTICE "----- event dump follows -----\n");
106 for (n = 0; n < EV; n++) {
109 printk(ev[i] ? ev[i] : "(null)",ev_a[i],ev_b[i]);
111 printk(KERN_NOTICE "----- event dump ends here -----\n");
115 #endif /* CONFIG_ATM_ZATM_DEBUG */
118 #define RING_BUSY 1 /* indication from do_tx that PDU has to be
121 static struct atm_dev *zatm_boards = NULL;
122 static unsigned long dummy[2] = {0,0};
125 #define zin_n(r) inl(zatm_dev->base+r*4)
126 #define zin(r) inl(zatm_dev->base+uPD98401_##r*4)
127 #define zout(v,r) outl(v,zatm_dev->base+uPD98401_##r*4)
128 #define zwait while (zin(CMR) & uPD98401_BUSY)
130 /* RX0, RX1, TX0, TX1 */
131 static const int mbx_entries[NR_MBX] = { 1024,1024,1024,1024 };
132 static const int mbx_esize[NR_MBX] = { 16,16,4,4 }; /* entry size in bytes */
134 #define MBX_SIZE(i) (mbx_entries[i]*mbx_esize[i])
137 /*-------------------------------- utilities --------------------------------*/
140 static void zpokel(struct zatm_dev *zatm_dev,u32 value,u32 addr)
144 zout(uPD98401_IND_ACC | uPD98401_IA_BALL |
145 (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
149 static u32 zpeekl(struct zatm_dev *zatm_dev,u32 addr)
152 zout(uPD98401_IND_ACC | uPD98401_IA_BALL | uPD98401_IA_RW |
153 (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
159 /*------------------------------- free lists --------------------------------*/
163 * Free buffer head structure:
164 * [0] pointer to buffer (for SAR)
165 * [1] buffer descr link pointer (for SAR)
166 * [2] back pointer to skb (for poll_rx)
171 struct rx_buffer_head {
172 u32 buffer; /* pointer to buffer (for SAR) */
173 u32 link; /* buffer descriptor link pointer (for SAR) */
174 struct sk_buff *skb; /* back pointer to skb (for poll_rx) */
178 static void refill_pool(struct atm_dev *dev,int pool)
180 struct zatm_dev *zatm_dev;
182 struct rx_buffer_head *first;
184 int align,offset,free,count,size;
186 EVENT("refill_pool\n",0,0);
187 zatm_dev = ZATM_DEV(dev);
188 size = (64 << (pool <= ZATM_AAL5_POOL_BASE ? 0 :
189 pool-ZATM_AAL5_POOL_BASE))+sizeof(struct rx_buffer_head);
190 if (size < PAGE_SIZE) {
191 align = 32; /* for 32 byte alignment */
192 offset = sizeof(struct rx_buffer_head);
196 offset = zatm_dev->pool_info[pool].offset+
197 sizeof(struct rx_buffer_head);
200 spin_lock_irqsave(&zatm_dev->lock, flags);
201 free = zpeekl(zatm_dev,zatm_dev->pool_base+2*pool) &
202 uPD98401_RXFP_REMAIN;
203 spin_unlock_irqrestore(&zatm_dev->lock, flags);
204 if (free >= zatm_dev->pool_info[pool].low_water) return;
205 EVENT("starting ... POOL: 0x%x, 0x%x\n",
206 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
207 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
208 EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
211 while (free < zatm_dev->pool_info[pool].high_water) {
212 struct rx_buffer_head *head;
214 skb = alloc_skb(size,GFP_ATOMIC);
216 printk(KERN_WARNING DEV_LABEL "(Itf %d): got no new "
217 "skb (%d) with %d free\n",dev->number,size,free);
220 skb_reserve(skb,(unsigned char *) ((((unsigned long) skb->data+
221 align+offset-1) & ~(unsigned long) (align-1))-offset)-
223 head = (struct rx_buffer_head *) skb->data;
224 skb_reserve(skb,sizeof(struct rx_buffer_head));
225 if (!first) first = head;
227 head->buffer = virt_to_bus(skb->data);
230 EVENT("enq skb 0x%08lx/0x%08lx\n",(unsigned long) skb,
231 (unsigned long) head);
232 spin_lock_irqsave(&zatm_dev->lock, flags);
233 if (zatm_dev->last_free[pool])
234 ((struct rx_buffer_head *) (zatm_dev->last_free[pool]->
235 data))[-1].link = virt_to_bus(head);
236 zatm_dev->last_free[pool] = skb;
237 skb_queue_tail(&zatm_dev->pool[pool],skb);
238 spin_unlock_irqrestore(&zatm_dev->lock, flags);
242 spin_lock_irqsave(&zatm_dev->lock, flags);
244 zout(virt_to_bus(first),CER);
245 zout(uPD98401_ADD_BAT | (pool << uPD98401_POOL_SHIFT) | count,
247 spin_unlock_irqrestore(&zatm_dev->lock, flags);
248 EVENT ("POOL: 0x%x, 0x%x\n",
249 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
250 zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
251 EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
256 static void drain_free(struct atm_dev *dev,int pool)
258 skb_queue_purge(&ZATM_DEV(dev)->pool[pool]);
262 static int pool_index(int max_pdu)
266 if (max_pdu % ATM_CELL_PAYLOAD)
267 printk(KERN_ERR DEV_LABEL ": driver error in pool_index: "
268 "max_pdu is %d\n",max_pdu);
269 if (max_pdu > 65536) return -1;
270 for (i = 0; (64 << i) < max_pdu; i++);
271 return i+ZATM_AAL5_POOL_BASE;
275 /* use_pool isn't reentrant */
278 static void use_pool(struct atm_dev *dev,int pool)
280 struct zatm_dev *zatm_dev;
284 zatm_dev = ZATM_DEV(dev);
285 if (!(zatm_dev->pool_info[pool].ref_count++)) {
286 skb_queue_head_init(&zatm_dev->pool[pool]);
287 size = pool-ZATM_AAL5_POOL_BASE;
288 if (size < 0) size = 0; /* 64B... */
289 else if (size > 10) size = 10; /* ... 64kB */
290 spin_lock_irqsave(&zatm_dev->lock, flags);
291 zpokel(zatm_dev,((zatm_dev->pool_info[pool].low_water/4) <<
292 uPD98401_RXFP_ALERT_SHIFT) |
293 (1 << uPD98401_RXFP_BTSZ_SHIFT) |
294 (size << uPD98401_RXFP_BFSZ_SHIFT),
295 zatm_dev->pool_base+pool*2);
296 zpokel(zatm_dev,(unsigned long) dummy,zatm_dev->pool_base+
298 spin_unlock_irqrestore(&zatm_dev->lock, flags);
299 zatm_dev->last_free[pool] = NULL;
300 refill_pool(dev,pool);
302 DPRINTK("pool %d: %d\n",pool,zatm_dev->pool_info[pool].ref_count);
306 static void unuse_pool(struct atm_dev *dev,int pool)
308 if (!(--ZATM_DEV(dev)->pool_info[pool].ref_count))
309 drain_free(dev,pool);
312 /*----------------------------------- RX ------------------------------------*/
316 static void exception(struct atm_vcc *vcc)
318 static int count = 0;
319 struct zatm_dev *zatm_dev = ZATM_DEV(vcc->dev);
320 struct zatm_vcc *zatm_vcc = ZATM_VCC(vcc);
324 if (count++ > 2) return;
325 for (i = 0; i < 8; i++)
326 printk("TX%d: 0x%08lx\n",i,
327 zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+i));
328 for (i = 0; i < 5; i++)
329 printk("SH%d: 0x%08lx\n",i,
330 zpeekl(zatm_dev,uPD98401_IM(zatm_vcc->shaper)+16*i));
331 qrp = (unsigned long *) zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
333 printk("qrp=0x%08lx\n",(unsigned long) qrp);
334 for (i = 0; i < 4; i++) printk("QRP[%d]: 0x%08lx",i,qrp[i]);
339 static const char *err_txt[] = {
343 "Maximum len violation",
359 static void poll_rx(struct atm_dev *dev,int mbx)
361 struct zatm_dev *zatm_dev;
366 EVENT("poll_rx\n",0,0);
367 zatm_dev = ZATM_DEV(dev);
368 pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
369 while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
375 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
377 if (((pos += 16) & 0xffff) == zatm_dev->mbx_end[mbx])
378 pos = zatm_dev->mbx_start[mbx];
379 cells = here[0] & uPD98401_AAL5_SIZE;
381 printk("RX IND: 0x%x, 0x%x, 0x%x, 0x%x\n",here[0],here[1],here[2],here[3]);
384 printk("POOL: 0x%08x, 0x%08x\n",zpeekl(zatm_dev,
385 zatm_dev->pool_base),
386 zpeekl(zatm_dev,zatm_dev->pool_base+1));
387 x = (unsigned long *) here[2];
388 printk("[0..3] = 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx\n",
389 x[0],x[1],x[2],x[3]);
393 if (here[3] & uPD98401_AAL5_ERR) {
394 error = (here[3] & uPD98401_AAL5_ES) >>
395 uPD98401_AAL5_ES_SHIFT;
396 if (error == uPD98401_AAL5_ES_DEACT ||
397 error == uPD98401_AAL5_ES_FREE) continue;
399 EVENT("error code 0x%x/0x%x\n",(here[3] & uPD98401_AAL5_ES) >>
400 uPD98401_AAL5_ES_SHIFT,error);
401 skb = ((struct rx_buffer_head *) bus_to_virt(here[2]))->skb;
402 __net_timestamp(skb);
404 printk("[-3..0] 0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",((unsigned *) skb->data)[-3],
405 ((unsigned *) skb->data)[-2],((unsigned *) skb->data)[-1],
406 ((unsigned *) skb->data)[0]);
408 EVENT("skb 0x%lx, here 0x%lx\n",(unsigned long) skb,
409 (unsigned long) here);
411 printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
413 size = error ? 0 : ntohs(((__be16 *) skb->data)[cells*
414 ATM_CELL_PAYLOAD/sizeof(u16)-3]);
415 EVENT("got skb 0x%lx, size %d\n",(unsigned long) skb,size);
416 chan = (here[3] & uPD98401_AAL5_CHAN) >>
417 uPD98401_AAL5_CHAN_SHIFT;
418 if (chan < zatm_dev->chans && zatm_dev->rx_map[chan]) {
420 vcc = zatm_dev->rx_map[chan];
421 pos = ZATM_VCC(vcc)->pool;
422 if (skb == zatm_dev->last_free[pos])
423 zatm_dev->last_free[pos] = NULL;
424 skb_unlink(skb, zatm_dev->pool + pos);
427 printk(KERN_ERR DEV_LABEL "(itf %d): RX indication "
428 "for non-existing channel\n",dev->number);
434 static unsigned long silence = 0;
435 static int last_error = 0;
437 if (error != last_error ||
438 time_after(jiffies, silence) || silence == 0){
439 printk(KERN_WARNING DEV_LABEL "(itf %d): "
440 "chan %d error %s\n",dev->number,chan,
443 silence = (jiffies+2*HZ)|1;
447 if (size && (size > cells*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER ||
448 size <= (cells-1)*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER)) {
449 printk(KERN_ERR DEV_LABEL "(itf %d): size %d with %d "
450 "cells\n",dev->number,size,cells);
454 if (size > ATM_MAX_AAL5_PDU) {
455 printk(KERN_ERR DEV_LABEL "(itf %d): size too big "
456 "(%d)\n",dev->number,size);
461 dev_kfree_skb_irq(skb);
462 if (vcc) atomic_inc(&vcc->stats->rx_err);
465 if (!atm_charge(vcc,skb->truesize)) {
466 dev_kfree_skb_irq(skb);
470 ATM_SKB(skb)->vcc = vcc;
472 atomic_inc(&vcc->stats->rx);
474 zout(pos & 0xffff,MTA(mbx));
475 #if 0 /* probably a stupid idea */
476 refill_pool(dev,zatm_vcc->pool);
477 /* maybe this saves us a few interrupts */
482 static int open_rx_first(struct atm_vcc *vcc)
484 struct zatm_dev *zatm_dev;
485 struct zatm_vcc *zatm_vcc;
490 DPRINTK("open_rx_first (0x%x)\n",inb_p(0xc053));
491 zatm_dev = ZATM_DEV(vcc->dev);
492 zatm_vcc = ZATM_VCC(vcc);
493 zatm_vcc->rx_chan = 0;
494 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
495 if (vcc->qos.aal == ATM_AAL5) {
496 if (vcc->qos.rxtp.max_sdu > 65464)
497 vcc->qos.rxtp.max_sdu = 65464;
498 /* fix this - we may want to receive 64kB SDUs
500 cells = DIV_ROUND_UP(vcc->qos.rxtp.max_sdu + ATM_AAL5_TRAILER,
502 zatm_vcc->pool = pool_index(cells*ATM_CELL_PAYLOAD);
506 zatm_vcc->pool = ZATM_AAL0_POOL;
508 if (zatm_vcc->pool < 0) return -EMSGSIZE;
509 spin_lock_irqsave(&zatm_dev->lock, flags);
511 zout(uPD98401_OPEN_CHAN,CMR);
513 DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
514 chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
515 spin_unlock_irqrestore(&zatm_dev->lock, flags);
516 DPRINTK("chan is %d\n",chan);
517 if (!chan) return -EAGAIN;
518 use_pool(vcc->dev,zatm_vcc->pool);
519 DPRINTK("pool %d\n",zatm_vcc->pool);
520 /* set up VC descriptor */
521 spin_lock_irqsave(&zatm_dev->lock, flags);
522 zpokel(zatm_dev,zatm_vcc->pool << uPD98401_RXVC_POOL_SHIFT,
524 zpokel(zatm_dev,uPD98401_RXVC_OD | (vcc->qos.aal == ATM_AAL5 ?
525 uPD98401_RXVC_AR : 0) | cells,chan*VC_SIZE/4+1);
526 zpokel(zatm_dev,0,chan*VC_SIZE/4+2);
527 zatm_vcc->rx_chan = chan;
528 zatm_dev->rx_map[chan] = vcc;
529 spin_unlock_irqrestore(&zatm_dev->lock, flags);
534 static int open_rx_second(struct atm_vcc *vcc)
536 struct zatm_dev *zatm_dev;
537 struct zatm_vcc *zatm_vcc;
541 DPRINTK("open_rx_second (0x%x)\n",inb_p(0xc053));
542 zatm_dev = ZATM_DEV(vcc->dev);
543 zatm_vcc = ZATM_VCC(vcc);
544 if (!zatm_vcc->rx_chan) return 0;
545 spin_lock_irqsave(&zatm_dev->lock, flags);
546 /* should also handle VPI @@@ */
548 shift = (1-(vcc->vci & 1)) << 4;
549 zpokel(zatm_dev,(zpeekl(zatm_dev,pos) & ~(0xffff << shift)) |
550 ((zatm_vcc->rx_chan | uPD98401_RXLT_ENBL) << shift),pos);
551 spin_unlock_irqrestore(&zatm_dev->lock, flags);
556 static void close_rx(struct atm_vcc *vcc)
558 struct zatm_dev *zatm_dev;
559 struct zatm_vcc *zatm_vcc;
563 zatm_vcc = ZATM_VCC(vcc);
564 zatm_dev = ZATM_DEV(vcc->dev);
565 if (!zatm_vcc->rx_chan) return;
566 DPRINTK("close_rx\n");
567 /* disable receiver */
568 if (vcc->vpi != ATM_VPI_UNSPEC && vcc->vci != ATM_VCI_UNSPEC) {
569 spin_lock_irqsave(&zatm_dev->lock, flags);
571 shift = (1-(vcc->vci & 1)) << 4;
572 zpokel(zatm_dev,zpeekl(zatm_dev,pos) & ~(0xffff << shift),pos);
574 zout(uPD98401_NOP,CMR);
576 zout(uPD98401_NOP,CMR);
577 spin_unlock_irqrestore(&zatm_dev->lock, flags);
579 spin_lock_irqsave(&zatm_dev->lock, flags);
581 zout(uPD98401_DEACT_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
582 uPD98401_CHAN_ADDR_SHIFT),CMR);
584 udelay(10); /* why oh why ... ? */
585 zout(uPD98401_CLOSE_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
586 uPD98401_CHAN_ADDR_SHIFT),CMR);
588 if (!(zin(CMR) & uPD98401_CHAN_ADDR))
589 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close RX channel "
590 "%d\n",vcc->dev->number,zatm_vcc->rx_chan);
591 spin_unlock_irqrestore(&zatm_dev->lock, flags);
592 zatm_dev->rx_map[zatm_vcc->rx_chan] = NULL;
593 zatm_vcc->rx_chan = 0;
594 unuse_pool(vcc->dev,zatm_vcc->pool);
598 static int start_rx(struct atm_dev *dev)
600 struct zatm_dev *zatm_dev;
603 DPRINTK("start_rx\n");
604 zatm_dev = ZATM_DEV(dev);
605 size = sizeof(struct atm_vcc *)*zatm_dev->chans;
606 zatm_dev->rx_map = kzalloc(size,GFP_KERNEL);
607 if (!zatm_dev->rx_map) return -ENOMEM;
608 /* set VPI/VCI split (use all VCIs and give what's left to VPIs) */
609 zpokel(zatm_dev,(1 << dev->ci_range.vci_bits)-1,uPD98401_VRR);
610 /* prepare free buffer pools */
611 for (i = 0; i <= ZATM_LAST_POOL; i++) {
612 zatm_dev->pool_info[i].ref_count = 0;
613 zatm_dev->pool_info[i].rqa_count = 0;
614 zatm_dev->pool_info[i].rqu_count = 0;
615 zatm_dev->pool_info[i].low_water = LOW_MARK;
616 zatm_dev->pool_info[i].high_water = HIGH_MARK;
617 zatm_dev->pool_info[i].offset = 0;
618 zatm_dev->pool_info[i].next_off = 0;
619 zatm_dev->pool_info[i].next_cnt = 0;
620 zatm_dev->pool_info[i].next_thres = OFF_CNG_THRES;
626 /*----------------------------------- TX ------------------------------------*/
629 static int do_tx(struct sk_buff *skb)
632 struct zatm_dev *zatm_dev;
633 struct zatm_vcc *zatm_vcc;
637 EVENT("do_tx\n",0,0);
638 DPRINTK("sending skb %p\n",skb);
639 vcc = ATM_SKB(skb)->vcc;
640 zatm_dev = ZATM_DEV(vcc->dev);
641 zatm_vcc = ZATM_VCC(vcc);
642 EVENT("iovcnt=%d\n",skb_shinfo(skb)->nr_frags,0);
643 spin_lock_irqsave(&zatm_dev->lock, flags);
644 if (!skb_shinfo(skb)->nr_frags) {
645 if (zatm_vcc->txing == RING_ENTRIES-1) {
646 spin_unlock_irqrestore(&zatm_dev->lock, flags);
650 dsc = zatm_vcc->ring+zatm_vcc->ring_curr;
651 zatm_vcc->ring_curr = (zatm_vcc->ring_curr+RING_WORDS) &
652 (RING_ENTRIES*RING_WORDS-1);
655 dsc[3] = virt_to_bus(skb->data);
657 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP | uPD98401_TXPD_SM
658 | (vcc->qos.aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
659 (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
660 uPD98401_CLPM_1 : uPD98401_CLPM_0));
661 EVENT("dsc (0x%lx)\n",(unsigned long) dsc,0);
664 printk("NONONONOO!!!!\n");
670 dsc = kmalloc(uPD98401_TXPD_SIZE * 2 +
671 uPD98401_TXBD_SIZE * ATM_SKB(skb)->iovcnt, GFP_ATOMIC);
676 dev_kfree_skb_irq(skb);
679 /* @@@ should check alignment */
681 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP |
682 (vcc->aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
683 (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
684 uPD98401_CLPM_1 : uPD98401_CLPM_0));
686 dsc[2] = ATM_SKB(skb)->iovcnt * uPD98401_TXBD_SIZE;
687 dsc[3] = virt_to_bus(put);
688 for (i = 0; i < ATM_SKB(skb)->iovcnt; i++) {
689 *put++ = ((struct iovec *) skb->data)[i].iov_len;
690 *put++ = virt_to_bus(((struct iovec *)
691 skb->data)[i].iov_base);
693 put[-2] |= uPD98401_TXBD_LAST;
696 ZATM_PRV_DSC(skb) = dsc;
697 skb_queue_tail(&zatm_vcc->tx_queue,skb);
698 DPRINTK("QRP=0x%08lx\n",zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
701 zout(uPD98401_TX_READY | (zatm_vcc->tx_chan <<
702 uPD98401_CHAN_ADDR_SHIFT),CMR);
703 spin_unlock_irqrestore(&zatm_dev->lock, flags);
709 static inline void dequeue_tx(struct atm_vcc *vcc)
711 struct zatm_vcc *zatm_vcc;
714 EVENT("dequeue_tx\n",0,0);
715 zatm_vcc = ZATM_VCC(vcc);
716 skb = skb_dequeue(&zatm_vcc->tx_queue);
718 printk(KERN_CRIT DEV_LABEL "(itf %d): dequeue_tx but not "
719 "txing\n",vcc->dev->number);
722 #if 0 /* @@@ would fail on CLP */
723 if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
724 uPD98401_TXPD_SM | uPD98401_TXPD_AAL5)) printk("@#*$!!!! (%08x)\n",
727 *ZATM_PRV_DSC(skb) = 0; /* mark as invalid */
729 if (vcc->pop) vcc->pop(vcc,skb);
730 else dev_kfree_skb_irq(skb);
731 while ((skb = skb_dequeue(&zatm_vcc->backlog)))
732 if (do_tx(skb) == RING_BUSY) {
733 skb_queue_head(&zatm_vcc->backlog,skb);
736 atomic_inc(&vcc->stats->tx);
737 wake_up(&zatm_vcc->tx_wait);
741 static void poll_tx(struct atm_dev *dev,int mbx)
743 struct zatm_dev *zatm_dev;
747 EVENT("poll_tx\n",0,0);
748 zatm_dev = ZATM_DEV(dev);
749 pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
750 while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
756 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
759 chan = (data & uPD98401_TXI_CONN) >> uPD98401_TXI_CONN_SHIFT;
760 EVENT("addr = 0x%lx, data = 0x%08x,",(unsigned long) addr,
762 EVENT("chan = %d\n",chan,0);
765 chan = (zatm_dev->mbx_start[mbx][pos >> 2] & uPD98401_TXI_CONN)
766 >> uPD98401_TXI_CONN_SHIFT;
768 if (chan < zatm_dev->chans && zatm_dev->tx_map[chan])
769 dequeue_tx(zatm_dev->tx_map[chan]);
771 printk(KERN_CRIT DEV_LABEL "(itf %d): TX indication "
772 "for non-existing channel %d\n",dev->number,chan);
775 if (((pos += 4) & 0xffff) == zatm_dev->mbx_end[mbx])
776 pos = zatm_dev->mbx_start[mbx];
778 zout(pos & 0xffff,MTA(mbx));
783 * BUG BUG BUG: Doesn't handle "new-style" rate specification yet.
786 static int alloc_shaper(struct atm_dev *dev,int *pcr,int min,int max,int ubr)
788 struct zatm_dev *zatm_dev;
793 DPRINTK("alloc_shaper (min = %d, max = %d)\n",min,max);
794 zatm_dev = ZATM_DEV(dev);
795 if (!zatm_dev->free_shapers) return -EAGAIN;
796 for (shaper = 0; !((zatm_dev->free_shapers >> shaper) & 1); shaper++);
797 zatm_dev->free_shapers &= ~1 << shaper;
801 zatm_dev->ubr_ref_cnt++;
802 zatm_dev->ubr = shaper;
813 m = ATM_OC3_PCR*255/min;
817 if (max > zatm_dev->tx_bw) max = zatm_dev->tx_bw;
824 m = DIV_ROUND_UP(ATM_OC3_PCR*255, max);
828 printk(KERN_CRIT DEV_LABEL "shaper algorithm botched "
829 "[%d,%d] -> i=%ld,m=%ld\n",min,max,i,m);
832 *pcr = i*ATM_OC3_PCR/m;
833 c = 20; /* @@@ should use max_cdv ! */
834 if ((min && *pcr < min) || (max && *pcr > max)) return -EINVAL;
835 if (zatm_dev->tx_bw < *pcr) return -EAGAIN;
836 zatm_dev->tx_bw -= *pcr;
838 spin_lock_irqsave(&zatm_dev->lock, flags);
839 DPRINTK("i = %d, m = %d, PCR = %d\n",i,m,*pcr);
840 zpokel(zatm_dev,(i << uPD98401_IM_I_SHIFT) | m,uPD98401_IM(shaper));
841 zpokel(zatm_dev,c << uPD98401_PC_C_SHIFT,uPD98401_PC(shaper));
842 zpokel(zatm_dev,0,uPD98401_X(shaper));
843 zpokel(zatm_dev,0,uPD98401_Y(shaper));
844 zpokel(zatm_dev,uPD98401_PS_E,uPD98401_PS(shaper));
845 spin_unlock_irqrestore(&zatm_dev->lock, flags);
850 static void dealloc_shaper(struct atm_dev *dev,int shaper)
852 struct zatm_dev *zatm_dev;
855 zatm_dev = ZATM_DEV(dev);
856 if (shaper == zatm_dev->ubr) {
857 if (--zatm_dev->ubr_ref_cnt) return;
860 spin_lock_irqsave(&zatm_dev->lock, flags);
861 zpokel(zatm_dev,zpeekl(zatm_dev,uPD98401_PS(shaper)) & ~uPD98401_PS_E,
862 uPD98401_PS(shaper));
863 spin_unlock_irqrestore(&zatm_dev->lock, flags);
864 zatm_dev->free_shapers |= 1 << shaper;
868 static void close_tx(struct atm_vcc *vcc)
870 struct zatm_dev *zatm_dev;
871 struct zatm_vcc *zatm_vcc;
875 zatm_vcc = ZATM_VCC(vcc);
876 zatm_dev = ZATM_DEV(vcc->dev);
877 chan = zatm_vcc->tx_chan;
879 DPRINTK("close_tx\n");
880 if (skb_peek(&zatm_vcc->backlog)) {
881 printk("waiting for backlog to drain ...\n");
883 wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->backlog));
885 if (skb_peek(&zatm_vcc->tx_queue)) {
886 printk("waiting for TX queue to drain ...\n");
888 wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->tx_queue));
890 spin_lock_irqsave(&zatm_dev->lock, flags);
893 zout(uPD98401_DEACT_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
896 zout(uPD98401_CLOSE_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
898 if (!(zin(CMR) & uPD98401_CHAN_ADDR))
899 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close TX channel "
900 "%d\n",vcc->dev->number,chan);
901 spin_unlock_irqrestore(&zatm_dev->lock, flags);
902 zatm_vcc->tx_chan = 0;
903 zatm_dev->tx_map[chan] = NULL;
904 if (zatm_vcc->shaper != zatm_dev->ubr) {
905 zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
906 dealloc_shaper(vcc->dev,zatm_vcc->shaper);
908 kfree(zatm_vcc->ring);
912 static int open_tx_first(struct atm_vcc *vcc)
914 struct zatm_dev *zatm_dev;
915 struct zatm_vcc *zatm_vcc;
921 DPRINTK("open_tx_first\n");
922 zatm_dev = ZATM_DEV(vcc->dev);
923 zatm_vcc = ZATM_VCC(vcc);
924 zatm_vcc->tx_chan = 0;
925 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
926 spin_lock_irqsave(&zatm_dev->lock, flags);
928 zout(uPD98401_OPEN_CHAN,CMR);
930 DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
931 chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
932 spin_unlock_irqrestore(&zatm_dev->lock, flags);
933 DPRINTK("chan is %d\n",chan);
934 if (!chan) return -EAGAIN;
935 unlimited = vcc->qos.txtp.traffic_class == ATM_UBR &&
936 (!vcc->qos.txtp.max_pcr || vcc->qos.txtp.max_pcr == ATM_MAX_PCR ||
937 vcc->qos.txtp.max_pcr >= ATM_OC3_PCR);
938 if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr;
940 int uninitialized_var(pcr);
942 if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU;
943 if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr,
944 vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,unlimited))
947 return zatm_vcc->shaper;
949 if (pcr > ATM_OC3_PCR) pcr = ATM_OC3_PCR;
950 vcc->qos.txtp.min_pcr = vcc->qos.txtp.max_pcr = pcr;
952 zatm_vcc->tx_chan = chan;
953 skb_queue_head_init(&zatm_vcc->tx_queue);
954 init_waitqueue_head(&zatm_vcc->tx_wait);
955 /* initialize ring */
956 zatm_vcc->ring = kzalloc(RING_SIZE,GFP_KERNEL);
957 if (!zatm_vcc->ring) return -ENOMEM;
958 loop = zatm_vcc->ring+RING_ENTRIES*RING_WORDS;
959 loop[0] = uPD98401_TXPD_V;
960 loop[1] = loop[2] = 0;
961 loop[3] = virt_to_bus(zatm_vcc->ring);
962 zatm_vcc->ring_curr = 0;
964 skb_queue_head_init(&zatm_vcc->backlog);
965 zpokel(zatm_dev,virt_to_bus(zatm_vcc->ring),
966 chan*VC_SIZE/4+uPD98401_TXVC_QRP);
971 static int open_tx_second(struct atm_vcc *vcc)
973 struct zatm_dev *zatm_dev;
974 struct zatm_vcc *zatm_vcc;
977 DPRINTK("open_tx_second\n");
978 zatm_dev = ZATM_DEV(vcc->dev);
979 zatm_vcc = ZATM_VCC(vcc);
980 if (!zatm_vcc->tx_chan) return 0;
981 /* set up VC descriptor */
982 spin_lock_irqsave(&zatm_dev->lock, flags);
983 zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4);
984 zpokel(zatm_dev,uPD98401_TXVC_L | (zatm_vcc->shaper <<
985 uPD98401_TXVC_SHP_SHIFT) | (vcc->vpi << uPD98401_TXVC_VPI_SHIFT) |
986 vcc->vci,zatm_vcc->tx_chan*VC_SIZE/4+1);
987 zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4+2);
988 spin_unlock_irqrestore(&zatm_dev->lock, flags);
989 zatm_dev->tx_map[zatm_vcc->tx_chan] = vcc;
994 static int start_tx(struct atm_dev *dev)
996 struct zatm_dev *zatm_dev;
999 DPRINTK("start_tx\n");
1000 zatm_dev = ZATM_DEV(dev);
1001 zatm_dev->tx_map = kmalloc(sizeof(struct atm_vcc *)*
1002 zatm_dev->chans,GFP_KERNEL);
1003 if (!zatm_dev->tx_map) return -ENOMEM;
1004 zatm_dev->tx_bw = ATM_OC3_PCR;
1005 zatm_dev->free_shapers = (1 << NR_SHAPERS)-1;
1007 zatm_dev->ubr_ref_cnt = 0;
1008 /* initialize shapers */
1009 for (i = 0; i < NR_SHAPERS; i++) zpokel(zatm_dev,0,uPD98401_PS(i));
1014 /*------------------------------- interrupts --------------------------------*/
1017 static irqreturn_t zatm_int(int irq,void *dev_id)
1019 struct atm_dev *dev;
1020 struct zatm_dev *zatm_dev;
1025 zatm_dev = ZATM_DEV(dev);
1026 while ((reason = zin(GSR))) {
1028 EVENT("reason 0x%x\n",reason,0);
1029 if (reason & uPD98401_INT_PI) {
1030 EVENT("PHY int\n",0,0);
1031 dev->phy->interrupt(dev);
1033 if (reason & uPD98401_INT_RQA) {
1034 unsigned long pools;
1038 EVENT("RQA (0x%08x)\n",pools,0);
1039 for (i = 0; pools; i++) {
1042 zatm_dev->pool_info[i].rqa_count++;
1047 if (reason & uPD98401_INT_RQU) {
1048 unsigned long pools;
1051 printk(KERN_WARNING DEV_LABEL "(itf %d): RQU 0x%08lx\n",
1054 for (i = 0; pools; i++) {
1057 zatm_dev->pool_info[i].rqu_count++;
1062 /* don't handle RD */
1063 if (reason & uPD98401_INT_SPE)
1064 printk(KERN_ALERT DEV_LABEL "(itf %d): system parity "
1065 "error at 0x%08x\n",dev->number,zin(ADDR));
1066 if (reason & uPD98401_INT_CPE)
1067 printk(KERN_ALERT DEV_LABEL "(itf %d): control memory "
1068 "parity error at 0x%08x\n",dev->number,zin(ADDR));
1069 if (reason & uPD98401_INT_SBE) {
1070 printk(KERN_ALERT DEV_LABEL "(itf %d): system bus "
1071 "error at 0x%08x\n",dev->number,zin(ADDR));
1074 /* don't handle IND */
1075 if (reason & uPD98401_INT_MF) {
1076 printk(KERN_CRIT DEV_LABEL "(itf %d): mailbox full "
1077 "(0x%x)\n",dev->number,(reason & uPD98401_INT_MF)
1078 >> uPD98401_INT_MF_SHIFT);
1080 /* @@@ should try to recover */
1082 if (reason & uPD98401_INT_MM) {
1083 if (reason & 1) poll_rx(dev,0);
1084 if (reason & 2) poll_rx(dev,1);
1085 if (reason & 4) poll_tx(dev,2);
1086 if (reason & 8) poll_tx(dev,3);
1088 /* @@@ handle RCRn */
1090 return IRQ_RETVAL(handled);
1094 /*----------------------------- (E)EPROM access -----------------------------*/
1097 static void __devinit eprom_set(struct zatm_dev *zatm_dev,unsigned long value,
1102 if ((error = pci_write_config_dword(zatm_dev->pci_dev,cmd,value)))
1103 printk(KERN_ERR DEV_LABEL ": PCI write failed (0x%02x)\n",
1108 static unsigned long __devinit eprom_get(struct zatm_dev *zatm_dev,
1114 if ((error = pci_read_config_dword(zatm_dev->pci_dev,cmd,&value)))
1115 printk(KERN_ERR DEV_LABEL ": PCI read failed (0x%02x)\n",
1121 static void __devinit eprom_put_bits(struct zatm_dev *zatm_dev,
1122 unsigned long data,int bits,unsigned short cmd)
1124 unsigned long value;
1127 for (i = bits-1; i >= 0; i--) {
1128 value = ZEPROM_CS | (((data >> i) & 1) ? ZEPROM_DI : 0);
1129 eprom_set(zatm_dev,value,cmd);
1130 eprom_set(zatm_dev,value | ZEPROM_SK,cmd);
1131 eprom_set(zatm_dev,value,cmd);
1136 static void __devinit eprom_get_byte(struct zatm_dev *zatm_dev,
1137 unsigned char *byte,unsigned short cmd)
1142 for (i = 8; i; i--) {
1143 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1144 eprom_set(zatm_dev,ZEPROM_CS | ZEPROM_SK,cmd);
1146 if (eprom_get(zatm_dev,cmd) & ZEPROM_DO) *byte |= 1;
1147 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1152 static unsigned char __devinit eprom_try_esi(struct atm_dev *dev,
1153 unsigned short cmd,int offset,int swap)
1155 unsigned char buf[ZEPROM_SIZE];
1156 struct zatm_dev *zatm_dev;
1159 zatm_dev = ZATM_DEV(dev);
1160 for (i = 0; i < ZEPROM_SIZE; i += 2) {
1161 eprom_set(zatm_dev,ZEPROM_CS,cmd); /* select EPROM */
1162 eprom_put_bits(zatm_dev,ZEPROM_CMD_READ,ZEPROM_CMD_LEN,cmd);
1163 eprom_put_bits(zatm_dev,i >> 1,ZEPROM_ADDR_LEN,cmd);
1164 eprom_get_byte(zatm_dev,buf+i+swap,cmd);
1165 eprom_get_byte(zatm_dev,buf+i+1-swap,cmd);
1166 eprom_set(zatm_dev,0,cmd); /* deselect EPROM */
1168 memcpy(dev->esi,buf+offset,ESI_LEN);
1169 return memcmp(dev->esi,"\0\0\0\0\0",ESI_LEN); /* assumes ESI_LEN == 6 */
1173 static void __devinit eprom_get_esi(struct atm_dev *dev)
1175 if (eprom_try_esi(dev,ZEPROM_V1_REG,ZEPROM_V1_ESI_OFF,1)) return;
1176 (void) eprom_try_esi(dev,ZEPROM_V2_REG,ZEPROM_V2_ESI_OFF,0);
1180 /*--------------------------------- entries ---------------------------------*/
1183 static int __devinit zatm_init(struct atm_dev *dev)
1185 struct zatm_dev *zatm_dev;
1186 struct pci_dev *pci_dev;
1187 unsigned short command;
1189 unsigned long t0,t1,t2;
1191 DPRINTK(">zatm_init\n");
1192 zatm_dev = ZATM_DEV(dev);
1193 spin_lock_init(&zatm_dev->lock);
1194 pci_dev = zatm_dev->pci_dev;
1195 zatm_dev->base = pci_resource_start(pci_dev, 0);
1196 zatm_dev->irq = pci_dev->irq;
1197 if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command))) {
1198 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
1202 if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
1203 command | PCI_COMMAND_IO | PCI_COMMAND_MASTER))) {
1204 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable IO (0x%02x)"
1205 "\n",dev->number,error);
1209 printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
1210 dev->number,pci_dev->revision,zatm_dev->base,zatm_dev->irq);
1211 /* reset uPD98401 */
1213 while (!(zin(GSR) & uPD98401_INT_IND));
1214 zout(uPD98401_GMR_ONE /*uPD98401_BURST4*/,GMR);
1215 last = MAX_CRAM_SIZE;
1216 for (i = last-RAM_INCREMENT; i >= 0; i -= RAM_INCREMENT) {
1217 zpokel(zatm_dev,0x55555555,i);
1218 if (zpeekl(zatm_dev,i) != 0x55555555) last = i;
1220 zpokel(zatm_dev,0xAAAAAAAA,i);
1221 if (zpeekl(zatm_dev,i) != 0xAAAAAAAA) last = i;
1222 else zpokel(zatm_dev,i,i);
1225 for (i = 0; i < last; i += RAM_INCREMENT)
1226 if (zpeekl(zatm_dev,i) != i) break;
1227 zatm_dev->mem = i << 2;
1228 while (i) zpokel(zatm_dev,0,--i);
1229 /* reset again to rebuild memory pointers */
1231 while (!(zin(GSR) & uPD98401_INT_IND));
1232 zout(uPD98401_GMR_ONE | uPD98401_BURST8 | uPD98401_BURST4 |
1233 uPD98401_BURST2 | uPD98401_GMR_PM | uPD98401_GMR_DR,GMR);
1234 /* TODO: should shrink allocation now */
1235 printk("mem=%dkB,%s (",zatm_dev->mem >> 10,zatm_dev->copper ? "UTP" :
1237 for (i = 0; i < ESI_LEN; i++)
1238 printk("%02X%s",dev->esi[i],i == ESI_LEN-1 ? ")\n" : "-");
1240 unsigned long flags;
1242 spin_lock_irqsave(&zatm_dev->lock, flags);
1243 t0 = zpeekl(zatm_dev,uPD98401_TSR);
1245 t1 = zpeekl(zatm_dev,uPD98401_TSR);
1247 t2 = zpeekl(zatm_dev,uPD98401_TSR);
1248 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1250 while (t0 > t1 || t1 > t2); /* loop if wrapping ... */
1251 zatm_dev->khz = t2-2*t1+t0;
1252 printk(KERN_NOTICE DEV_LABEL "(itf %d): uPD98401 %d.%d at %d.%03d "
1253 "MHz\n",dev->number,
1254 (zin(VER) & uPD98401_MAJOR) >> uPD98401_MAJOR_SHIFT,
1255 zin(VER) & uPD98401_MINOR,zatm_dev->khz/1000,zatm_dev->khz % 1000);
1256 return uPD98402_init(dev);
1260 static int __devinit zatm_start(struct atm_dev *dev)
1262 struct zatm_dev *zatm_dev = ZATM_DEV(dev);
1263 struct pci_dev *pdev = zatm_dev->pci_dev;
1268 DPRINTK("zatm_start\n");
1269 zatm_dev->rx_map = zatm_dev->tx_map = NULL;
1270 for (i = 0; i < NR_MBX; i++)
1271 zatm_dev->mbx_start[i] = 0;
1272 error = request_irq(zatm_dev->irq, zatm_int, IRQF_SHARED, DEV_LABEL, dev);
1274 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
1275 dev->number,zatm_dev->irq);
1278 /* define memory regions */
1280 if (NR_SHAPERS*SHAPER_SIZE > pools*POOL_SIZE)
1281 pools = NR_SHAPERS*SHAPER_SIZE/POOL_SIZE;
1282 vccs = (zatm_dev->mem-NR_SHAPERS*SHAPER_SIZE-pools*POOL_SIZE)/
1283 (2*VC_SIZE+RX_SIZE);
1285 for (rx = 1; rx < vccs; rx <<= 1) ld++;
1286 dev->ci_range.vpi_bits = 0; /* @@@ no VPI for now */
1287 dev->ci_range.vci_bits = ld;
1288 dev->link_rate = ATM_OC3_PCR;
1289 zatm_dev->chans = vccs; /* ??? */
1290 curr = rx*RX_SIZE/4;
1291 DPRINTK("RX pool 0x%08lx\n",curr);
1292 zpokel(zatm_dev,curr,uPD98401_PMA); /* receive pool */
1293 zatm_dev->pool_base = curr;
1294 curr += pools*POOL_SIZE/4;
1295 DPRINTK("Shapers 0x%08lx\n",curr);
1296 zpokel(zatm_dev,curr,uPD98401_SMA); /* shapers */
1297 curr += NR_SHAPERS*SHAPER_SIZE/4;
1298 DPRINTK("Free 0x%08lx\n",curr);
1299 zpokel(zatm_dev,curr,uPD98401_TOS); /* free pool */
1300 printk(KERN_INFO DEV_LABEL "(itf %d): %d shapers, %d pools, %d RX, "
1301 "%ld VCs\n",dev->number,NR_SHAPERS,pools,rx,
1302 (zatm_dev->mem-curr*4)/VC_SIZE);
1303 /* create mailboxes */
1304 for (i = 0; i < NR_MBX; i++) {
1308 if (!mbx_entries[i])
1310 mbx = pci_alloc_consistent(pdev, 2*MBX_SIZE(i), &mbx_dma);
1316 * Alignment provided by pci_alloc_consistent() isn't enough
1319 if (((unsigned long)mbx ^ mbx_dma) & 0xffff) {
1320 printk(KERN_ERR DEV_LABEL "(itf %d): system "
1321 "bus incompatible with driver\n", dev->number);
1322 pci_free_consistent(pdev, 2*MBX_SIZE(i), mbx, mbx_dma);
1326 DPRINTK("mbx@0x%08lx-0x%08lx\n", mbx, mbx + MBX_SIZE(i));
1327 zatm_dev->mbx_start[i] = (unsigned long)mbx;
1328 zatm_dev->mbx_dma[i] = mbx_dma;
1329 zatm_dev->mbx_end[i] = (zatm_dev->mbx_start[i] + MBX_SIZE(i)) &
1331 zout(mbx_dma >> 16, MSH(i));
1332 zout(mbx_dma, MSL(i));
1333 zout(zatm_dev->mbx_end[i], MBA(i));
1334 zout((unsigned long)mbx & 0xffff, MTA(i));
1335 zout((unsigned long)mbx & 0xffff, MWA(i));
1337 error = start_tx(dev);
1340 error = start_rx(dev);
1343 error = dev->phy->start(dev);
1346 zout(0xffffffff,IMR); /* enable interrupts */
1347 /* enable TX & RX */
1348 zout(zin(GMR) | uPD98401_GMR_SE | uPD98401_GMR_RE,GMR);
1353 kfree(zatm_dev->rx_map);
1355 kfree(zatm_dev->tx_map);
1358 pci_free_consistent(pdev, 2*MBX_SIZE(i),
1359 (void *)zatm_dev->mbx_start[i],
1360 zatm_dev->mbx_dma[i]);
1362 free_irq(zatm_dev->irq, dev);
1367 static void zatm_close(struct atm_vcc *vcc)
1369 DPRINTK(">zatm_close\n");
1370 if (!ZATM_VCC(vcc)) return;
1371 clear_bit(ATM_VF_READY,&vcc->flags);
1373 EVENT("close_tx\n",0,0);
1375 DPRINTK("zatm_close: done waiting\n");
1376 /* deallocate memory */
1377 kfree(ZATM_VCC(vcc));
1378 vcc->dev_data = NULL;
1379 clear_bit(ATM_VF_ADDR,&vcc->flags);
1383 static int zatm_open(struct atm_vcc *vcc)
1385 struct zatm_dev *zatm_dev;
1386 struct zatm_vcc *zatm_vcc;
1387 short vpi = vcc->vpi;
1391 DPRINTK(">zatm_open\n");
1392 zatm_dev = ZATM_DEV(vcc->dev);
1393 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
1394 vcc->dev_data = NULL;
1395 if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
1396 set_bit(ATM_VF_ADDR,&vcc->flags);
1397 if (vcc->qos.aal != ATM_AAL5) return -EINVAL; /* @@@ AAL0 */
1398 DPRINTK(DEV_LABEL "(itf %d): open %d.%d\n",vcc->dev->number,vcc->vpi,
1400 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
1401 zatm_vcc = kmalloc(sizeof(struct zatm_vcc),GFP_KERNEL);
1403 clear_bit(ATM_VF_ADDR,&vcc->flags);
1406 vcc->dev_data = zatm_vcc;
1407 ZATM_VCC(vcc)->tx_chan = 0; /* for zatm_close after open_rx */
1408 if ((error = open_rx_first(vcc))) {
1412 if ((error = open_tx_first(vcc))) {
1417 if (vci == ATM_VPI_UNSPEC || vpi == ATM_VCI_UNSPEC) return 0;
1418 if ((error = open_rx_second(vcc))) {
1422 if ((error = open_tx_second(vcc))) {
1426 set_bit(ATM_VF_READY,&vcc->flags);
1431 static int zatm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
1433 printk("Not yet implemented\n");
1439 static int zatm_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
1441 struct zatm_dev *zatm_dev;
1442 unsigned long flags;
1444 zatm_dev = ZATM_DEV(dev);
1447 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1451 struct zatm_pool_info info;
1455 &((struct zatm_pool_req __user *) arg)->pool_num))
1457 if (pool < 0 || pool > ZATM_LAST_POOL)
1459 spin_lock_irqsave(&zatm_dev->lock, flags);
1460 info = zatm_dev->pool_info[pool];
1461 if (cmd == ZATM_GETPOOLZ) {
1462 zatm_dev->pool_info[pool].rqa_count = 0;
1463 zatm_dev->pool_info[pool].rqu_count = 0;
1465 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1466 return copy_to_user(
1467 &((struct zatm_pool_req __user *) arg)->info,
1468 &info,sizeof(info)) ? -EFAULT : 0;
1472 struct zatm_pool_info info;
1475 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1477 &((struct zatm_pool_req __user *) arg)->pool_num))
1479 if (pool < 0 || pool > ZATM_LAST_POOL)
1481 if (copy_from_user(&info,
1482 &((struct zatm_pool_req __user *) arg)->info,
1483 sizeof(info))) return -EFAULT;
1484 if (!info.low_water)
1485 info.low_water = zatm_dev->
1486 pool_info[pool].low_water;
1487 if (!info.high_water)
1488 info.high_water = zatm_dev->
1489 pool_info[pool].high_water;
1490 if (!info.next_thres)
1491 info.next_thres = zatm_dev->
1492 pool_info[pool].next_thres;
1493 if (info.low_water >= info.high_water ||
1496 spin_lock_irqsave(&zatm_dev->lock, flags);
1497 zatm_dev->pool_info[pool].low_water =
1499 zatm_dev->pool_info[pool].high_water =
1501 zatm_dev->pool_info[pool].next_thres =
1503 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1507 if (!dev->phy->ioctl) return -ENOIOCTLCMD;
1508 return dev->phy->ioctl(dev,cmd,arg);
1513 static int zatm_getsockopt(struct atm_vcc *vcc,int level,int optname,
1514 void __user *optval,int optlen)
1520 static int zatm_setsockopt(struct atm_vcc *vcc,int level,int optname,
1521 void __user *optval,unsigned int optlen)
1526 static int zatm_send(struct atm_vcc *vcc,struct sk_buff *skb)
1530 EVENT(">zatm_send 0x%lx\n",(unsigned long) skb,0);
1531 if (!ZATM_VCC(vcc)->tx_chan || !test_bit(ATM_VF_READY,&vcc->flags)) {
1532 if (vcc->pop) vcc->pop(vcc,skb);
1533 else dev_kfree_skb(skb);
1537 printk(KERN_CRIT "!skb in zatm_send ?\n");
1538 if (vcc->pop) vcc->pop(vcc,skb);
1541 ATM_SKB(skb)->vcc = vcc;
1543 if (error != RING_BUSY) return error;
1544 skb_queue_tail(&ZATM_VCC(vcc)->backlog,skb);
1549 static void zatm_phy_put(struct atm_dev *dev,unsigned char value,
1552 struct zatm_dev *zatm_dev;
1554 zatm_dev = ZATM_DEV(dev);
1557 zout(uPD98401_IND_ACC | uPD98401_IA_B0 |
1558 (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1562 static unsigned char zatm_phy_get(struct atm_dev *dev,unsigned long addr)
1564 struct zatm_dev *zatm_dev;
1566 zatm_dev = ZATM_DEV(dev);
1568 zout(uPD98401_IND_ACC | uPD98401_IA_B0 | uPD98401_IA_RW |
1569 (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1571 return zin(CER) & 0xff;
1575 static const struct atmdev_ops ops = {
1577 .close = zatm_close,
1578 .ioctl = zatm_ioctl,
1579 .getsockopt = zatm_getsockopt,
1580 .setsockopt = zatm_setsockopt,
1582 .phy_put = zatm_phy_put,
1583 .phy_get = zatm_phy_get,
1584 .change_qos = zatm_change_qos,
1587 static int __devinit zatm_init_one(struct pci_dev *pci_dev,
1588 const struct pci_device_id *ent)
1590 struct atm_dev *dev;
1591 struct zatm_dev *zatm_dev;
1594 zatm_dev = kmalloc(sizeof(*zatm_dev), GFP_KERNEL);
1596 printk(KERN_EMERG "%s: memory shortage\n", DEV_LABEL);
1600 dev = atm_dev_register(DEV_LABEL, &pci_dev->dev, &ops, -1, NULL);
1604 ret = pci_enable_device(pci_dev);
1606 goto out_deregister;
1608 ret = pci_request_regions(pci_dev, DEV_LABEL);
1612 zatm_dev->pci_dev = pci_dev;
1613 dev->dev_data = zatm_dev;
1614 zatm_dev->copper = (int)ent->driver_data;
1615 if ((ret = zatm_init(dev)) || (ret = zatm_start(dev)))
1618 pci_set_drvdata(pci_dev, dev);
1619 zatm_dev->more = zatm_boards;
1626 pci_release_regions(pci_dev);
1628 pci_disable_device(pci_dev);
1630 atm_dev_deregister(dev);
1637 MODULE_LICENSE("GPL");
1639 static struct pci_device_id zatm_pci_tbl[] __devinitdata = {
1640 { PCI_VDEVICE(ZEITNET, PCI_DEVICE_ID_ZEITNET_1221), ZATM_COPPER },
1641 { PCI_VDEVICE(ZEITNET, PCI_DEVICE_ID_ZEITNET_1225), 0 },
1644 MODULE_DEVICE_TABLE(pci, zatm_pci_tbl);
1646 static struct pci_driver zatm_driver = {
1648 .id_table = zatm_pci_tbl,
1649 .probe = zatm_init_one,
1652 static int __init zatm_init_module(void)
1654 return pci_register_driver(&zatm_driver);
1657 module_init(zatm_init_module);
1658 /* module_exit not defined so not unloadable */