IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[linux-2.6.git] / drivers / atm / iphase.c
1 /******************************************************************************
2          iphase.c: Device driver for Interphase ATM PCI adapter cards 
3                     Author: Peter Wang  <pwang@iphase.com>            
4                    Some fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5                    Interphase Corporation  <www.iphase.com>           
6                                Version: 1.0                           
7 *******************************************************************************
8       
9       This software may be used and distributed according to the terms
10       of the GNU General Public License (GPL), incorporated herein by reference.
11       Drivers based on this skeleton fall under the GPL and must retain
12       the authorship (implicit copyright) notice.
13
14       This program is distributed in the hope that it will be useful, but
15       WITHOUT ANY WARRANTY; without even the implied warranty of
16       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17       General Public License for more details.
18       
19       Modified from an incomplete driver for Interphase 5575 1KVC 1M card which 
20       was originally written by Monalisa Agrawal at UNH. Now this driver 
21       supports a variety of varients of Interphase ATM PCI (i)Chip adapter 
22       card family (See www.iphase.com/products/ClassSheet.cfm?ClassID=ATM) 
23       in terms of PHY type, the size of control memory and the size of 
24       packet memory. The followings are the change log and history:
25      
26           Bugfix the Mona's UBR driver.
27           Modify the basic memory allocation and dma logic.
28           Port the driver to the latest kernel from 2.0.46.
29           Complete the ABR logic of the driver, and added the ABR work-
30               around for the hardware anormalies.
31           Add the CBR support.
32           Add the flow control logic to the driver to allow rate-limit VC.
33           Add 4K VC support to the board with 512K control memory.
34           Add the support of all the variants of the Interphase ATM PCI 
35           (i)Chip adapter cards including x575 (155M OC3 and UTP155), x525
36           (25M UTP25) and x531 (DS3 and E3).
37           Add SMP support.
38
39       Support and updates available at: ftp://ftp.iphase.com/pub/atm
40
41 *******************************************************************************/
42
43 #include <linux/module.h>  
44 #include <linux/kernel.h>  
45 #include <linux/mm.h>  
46 #include <linux/pci.h>  
47 #include <linux/errno.h>  
48 #include <linux/atm.h>  
49 #include <linux/atmdev.h>  
50 #include <linux/sonet.h>  
51 #include <linux/skbuff.h>  
52 #include <linux/time.h>  
53 #include <linux/delay.h>  
54 #include <linux/uio.h>  
55 #include <linux/init.h>  
56 #include <linux/wait.h>
57 #include <asm/system.h>  
58 #include <asm/io.h>  
59 #include <asm/atomic.h>  
60 #include <asm/uaccess.h>  
61 #include <asm/string.h>  
62 #include <asm/byteorder.h>  
63 #include <linux/vmalloc.h>  
64 #include "iphase.h"               
65 #include "suni.h"                 
66 #define swap(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))  
67 struct suni_priv {
68         struct k_sonet_stats sonet_stats; /* link diagnostics */
69         unsigned char loop_mode;        /* loopback mode */
70         struct atm_dev *dev;            /* device back-pointer */
71         struct suni_priv *next;         /* next SUNI */
72 }; 
73 #define PRIV(dev) ((struct suni_priv *) dev->phy_data)
74
75 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
76 static void desc_dbg(IADEV *iadev);
77
78 static IADEV *ia_dev[8];
79 static struct atm_dev *_ia_dev[8];
80 static int iadev_count;
81 static void ia_led_timer(unsigned long arg);
82 static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
83 static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
84 static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
85 static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
86             |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0; 
87
88 module_param(IA_TX_BUF, int, 0);
89 module_param(IA_TX_BUF_SZ, int, 0);
90 module_param(IA_RX_BUF, int, 0);
91 module_param(IA_RX_BUF_SZ, int, 0);
92 module_param(IADebugFlag, uint, 0644);
93
94 MODULE_LICENSE("GPL");
95
96 #if BITS_PER_LONG != 32
97 #  error FIXME: this driver only works on 32-bit platforms
98 #endif
99
100 /**************************** IA_LIB **********************************/
101
102 static void ia_init_rtn_q (IARTN_Q *que) 
103
104    que->next = NULL; 
105    que->tail = NULL; 
106 }
107
108 static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data) 
109 {
110    data->next = NULL;
111    if (que->next == NULL) 
112       que->next = que->tail = data;
113    else {
114       data->next = que->next;
115       que->next = data;
116    } 
117    return;
118 }
119
120 static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
121    IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
122    if (!entry) return -1;
123    entry->data = data;
124    entry->next = NULL;
125    if (que->next == NULL) 
126       que->next = que->tail = entry;
127    else {
128       que->tail->next = entry;
129       que->tail = que->tail->next;
130    }      
131    return 1;
132 }
133
134 static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
135    IARTN_Q *tmpdata;
136    if (que->next == NULL)
137       return NULL;
138    tmpdata = que->next;
139    if ( que->next == que->tail)  
140       que->next = que->tail = NULL;
141    else 
142       que->next = que->next->next;
143    return tmpdata;
144 }
145
146 static void ia_hack_tcq(IADEV *dev) {
147
148   u_short               desc1;
149   u_short               tcq_wr;
150   struct ia_vcc         *iavcc_r = NULL; 
151
152   tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
153   while (dev->host_tcq_wr != tcq_wr) {
154      desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
155      if (!desc1) ;
156      else if (!dev->desc_tbl[desc1 -1].timestamp) {
157         IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
158         *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
159      }                                 
160      else if (dev->desc_tbl[desc1 -1].timestamp) {
161         if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) { 
162            printk("IA: Fatal err in get_desc\n");
163            continue;
164         }
165         iavcc_r->vc_desc_cnt--;
166         dev->desc_tbl[desc1 -1].timestamp = 0;
167         IF_EVENT(printk("ia_hack: return_q skb = 0x%x desc = %d\n", 
168                                    (u32)dev->desc_tbl[desc1 -1].txskb, desc1);)
169         if (iavcc_r->pcr < dev->rate_limit) {
170            IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
171            if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
172               printk("ia_hack_tcq: No memory available\n");
173         } 
174         dev->desc_tbl[desc1 -1].iavcc = NULL;
175         dev->desc_tbl[desc1 -1].txskb = NULL;
176      }
177      dev->host_tcq_wr += 2;
178      if (dev->host_tcq_wr > dev->ffL.tcq_ed) 
179         dev->host_tcq_wr = dev->ffL.tcq_st;
180   }
181 } /* ia_hack_tcq */
182
183 static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
184   u_short               desc_num, i;
185   struct sk_buff        *skb;
186   struct ia_vcc         *iavcc_r = NULL; 
187   unsigned long delta;
188   static unsigned long timer = 0;
189   int ltimeout;
190
191   ia_hack_tcq (dev);
192   if(((jiffies - timer)>50)||((dev->ffL.tcq_rd==dev->host_tcq_wr))){      
193      timer = jiffies; 
194      i=0;
195      while (i < dev->num_tx_desc) {
196         if (!dev->desc_tbl[i].timestamp) {
197            i++;
198            continue;
199         }
200         ltimeout = dev->desc_tbl[i].iavcc->ltimeout; 
201         delta = jiffies - dev->desc_tbl[i].timestamp;
202         if (delta >= ltimeout) {
203            IF_ABR(printk("RECOVER run!! desc_tbl %d = %d  delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
204            if (dev->ffL.tcq_rd == dev->ffL.tcq_st) 
205               dev->ffL.tcq_rd =  dev->ffL.tcq_ed;
206            else 
207               dev->ffL.tcq_rd -= 2;
208            *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
209            if (!(skb = dev->desc_tbl[i].txskb) || 
210                           !(iavcc_r = dev->desc_tbl[i].iavcc))
211               printk("Fatal err, desc table vcc or skb is NULL\n");
212            else 
213               iavcc_r->vc_desc_cnt--;
214            dev->desc_tbl[i].timestamp = 0;
215            dev->desc_tbl[i].iavcc = NULL;
216            dev->desc_tbl[i].txskb = NULL;
217         }
218         i++;
219      } /* while */
220   }
221   if (dev->ffL.tcq_rd == dev->host_tcq_wr) 
222      return 0xFFFF;
223     
224   /* Get the next available descriptor number from TCQ */
225   desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
226
227   while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
228      dev->ffL.tcq_rd += 2;
229      if (dev->ffL.tcq_rd > dev->ffL.tcq_ed) 
230      dev->ffL.tcq_rd = dev->ffL.tcq_st;
231      if (dev->ffL.tcq_rd == dev->host_tcq_wr) 
232         return 0xFFFF; 
233      desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
234   }
235
236   /* get system time */
237   dev->desc_tbl[desc_num -1].timestamp = jiffies;
238   return desc_num;
239 }
240
241 static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
242   u_char                foundLockUp;
243   vcstatus_t            *vcstatus;
244   u_short               *shd_tbl;
245   u_short               tempCellSlot, tempFract;
246   struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
247   struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
248   u_int  i;
249
250   if (vcc->qos.txtp.traffic_class == ATM_ABR) {
251      vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
252      vcstatus->cnt++;
253      foundLockUp = 0;
254      if( vcstatus->cnt == 0x05 ) {
255         abr_vc += vcc->vci;
256         eabr_vc += vcc->vci;
257         if( eabr_vc->last_desc ) {
258            if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
259               /* Wait for 10 Micro sec */
260               udelay(10);
261               if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
262                  foundLockUp = 1;
263            }
264            else {
265               tempCellSlot = abr_vc->last_cell_slot;
266               tempFract    = abr_vc->fraction;
267               if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
268                          && (tempFract == dev->testTable[vcc->vci]->fract))
269                  foundLockUp = 1;                   
270               dev->testTable[vcc->vci]->lastTime = tempCellSlot;   
271               dev->testTable[vcc->vci]->fract = tempFract; 
272            }        
273         } /* last descriptor */            
274         vcstatus->cnt = 0;      
275      } /* vcstatus->cnt */
276         
277      if (foundLockUp) {
278         IF_ABR(printk("LOCK UP found\n");) 
279         writew(0xFFFD, dev->seg_reg+MODE_REG_0);
280         /* Wait for 10 Micro sec */
281         udelay(10); 
282         abr_vc->status &= 0xFFF8;
283         abr_vc->status |= 0x0001;  /* state is idle */
284         shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;                
285         for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
286         if (i < dev->num_vc)
287            shd_tbl[i] = vcc->vci;
288         else
289            IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
290         writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
291         writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
292         writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);       
293         vcstatus->cnt = 0;
294      } /* foundLockUp */
295
296   } /* if an ABR VC */
297
298
299 }
300  
301 /*
302 ** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
303 **
304 **  +----+----+------------------+-------------------------------+
305 **  |  R | NZ |  5-bit exponent  |        9-bit mantissa         |
306 **  +----+----+------------------+-------------------------------+
307 ** 
308 **    R = reserverd (written as 0)
309 **    NZ = 0 if 0 cells/sec; 1 otherwise
310 **
311 **    if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
312 */
313 static u16
314 cellrate_to_float(u32 cr)
315 {
316
317 #define NZ              0x4000
318 #define M_BITS          9               /* Number of bits in mantissa */
319 #define E_BITS          5               /* Number of bits in exponent */
320 #define M_MASK          0x1ff           
321 #define E_MASK          0x1f
322   u16   flot;
323   u32   tmp = cr & 0x00ffffff;
324   int   i   = 0;
325   if (cr == 0)
326      return 0;
327   while (tmp != 1) {
328      tmp >>= 1;
329      i++;
330   }
331   if (i == M_BITS)
332      flot = NZ | (i << M_BITS) | (cr & M_MASK);
333   else if (i < M_BITS)
334      flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
335   else
336      flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
337   return flot;
338 }
339
340 #if 0
341 /*
342 ** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
343 */
344 static u32
345 float_to_cellrate(u16 rate)
346 {
347   u32   exp, mantissa, cps;
348   if ((rate & NZ) == 0)
349      return 0;
350   exp = (rate >> M_BITS) & E_MASK;
351   mantissa = rate & M_MASK;
352   if (exp == 0)
353      return 1;
354   cps = (1 << M_BITS) | mantissa;
355   if (exp == M_BITS)
356      cps = cps;
357   else if (exp > M_BITS)
358      cps <<= (exp - M_BITS);
359   else
360      cps >>= (M_BITS - exp);
361   return cps;
362 }
363 #endif 
364
365 static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
366   srv_p->class_type = ATM_ABR;
367   srv_p->pcr        = dev->LineRate;
368   srv_p->mcr        = 0;
369   srv_p->icr        = 0x055cb7;
370   srv_p->tbe        = 0xffffff;
371   srv_p->frtt       = 0x3a;
372   srv_p->rif        = 0xf;
373   srv_p->rdf        = 0xb;
374   srv_p->nrm        = 0x4;
375   srv_p->trm        = 0x7;
376   srv_p->cdf        = 0x3;
377   srv_p->adtf       = 50;
378 }
379
380 static int
381 ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p, 
382                                                 struct atm_vcc *vcc, u8 flag)
383 {
384   f_vc_abr_entry  *f_abr_vc;
385   r_vc_abr_entry  *r_abr_vc;
386   u32           icr;
387   u8            trm, nrm, crm;
388   u16           adtf, air, *ptr16;      
389   f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
390   f_abr_vc += vcc->vci;       
391   switch (flag) {
392      case 1: /* FFRED initialization */
393 #if 0  /* sanity check */
394        if (srv_p->pcr == 0)
395           return INVALID_PCR;
396        if (srv_p->pcr > dev->LineRate)
397           srv_p->pcr = dev->LineRate;
398        if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
399           return MCR_UNAVAILABLE;
400        if (srv_p->mcr > srv_p->pcr)
401           return INVALID_MCR;
402        if (!(srv_p->icr))
403           srv_p->icr = srv_p->pcr;
404        if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
405           return INVALID_ICR;
406        if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
407           return INVALID_TBE;
408        if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
409           return INVALID_FRTT;
410        if (srv_p->nrm > MAX_NRM)
411           return INVALID_NRM;
412        if (srv_p->trm > MAX_TRM)
413           return INVALID_TRM;
414        if (srv_p->adtf > MAX_ADTF)
415           return INVALID_ADTF;
416        else if (srv_p->adtf == 0)
417           srv_p->adtf = 1;
418        if (srv_p->cdf > MAX_CDF)
419           return INVALID_CDF;
420        if (srv_p->rif > MAX_RIF)
421           return INVALID_RIF;
422        if (srv_p->rdf > MAX_RDF)
423           return INVALID_RDF;
424 #endif
425        memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
426        f_abr_vc->f_vc_type = ABR;
427        nrm = 2 << srv_p->nrm;     /* (2 ** (srv_p->nrm +1)) */
428                                   /* i.e 2**n = 2 << (n-1) */
429        f_abr_vc->f_nrm = nrm << 8 | nrm;
430        trm = 100000/(2 << (16 - srv_p->trm));
431        if ( trm == 0) trm = 1;
432        f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
433        crm = srv_p->tbe / nrm;
434        if (crm == 0) crm = 1;
435        f_abr_vc->f_crm = crm & 0xff;
436        f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
437        icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
438                                 ((srv_p->tbe/srv_p->frtt)*1000000) :
439                                 (1000000/(srv_p->frtt/srv_p->tbe)));
440        f_abr_vc->f_icr = cellrate_to_float(icr);
441        adtf = (10000 * srv_p->adtf)/8192;
442        if (adtf == 0) adtf = 1; 
443        f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
444        f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
445        f_abr_vc->f_acr = f_abr_vc->f_icr;
446        f_abr_vc->f_status = 0x0042;
447        break;
448     case 0: /* RFRED initialization */  
449        ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize); 
450        *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
451        r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
452        r_abr_vc += vcc->vci;
453        r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
454        air = srv_p->pcr << (15 - srv_p->rif);
455        if (air == 0) air = 1;
456        r_abr_vc->r_air = cellrate_to_float(air);
457        dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
458        dev->sum_mcr        += srv_p->mcr;
459        dev->n_abr++;
460        break;
461     default:
462        break;
463   }
464   return        0;
465 }
466 static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
467    u32 rateLow=0, rateHigh, rate;
468    int entries;
469    struct ia_vcc *ia_vcc;
470
471    int   idealSlot =0, testSlot, toBeAssigned, inc;
472    u32   spacing;
473    u16  *SchedTbl, *TstSchedTbl;
474    u16  cbrVC, vcIndex;
475    u32   fracSlot    = 0;
476    u32   sp_mod      = 0;
477    u32   sp_mod2     = 0;
478
479    /* IpAdjustTrafficParams */
480    if (vcc->qos.txtp.max_pcr <= 0) {
481       IF_ERR(printk("PCR for CBR not defined\n");)
482       return -1;
483    }
484    rate = vcc->qos.txtp.max_pcr;
485    entries = rate / dev->Granularity;
486    IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
487                                 entries, rate, dev->Granularity);)
488    if (entries < 1)
489       IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");) 
490    rateLow  =  entries * dev->Granularity;
491    rateHigh = (entries + 1) * dev->Granularity;
492    if (3*(rate - rateLow) > (rateHigh - rate))
493       entries++;
494    if (entries > dev->CbrRemEntries) {
495       IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
496       IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
497                                        entries, dev->CbrRemEntries);)
498       return -EBUSY;
499    }   
500
501    ia_vcc = INPH_IA_VCC(vcc);
502    ia_vcc->NumCbrEntry = entries; 
503    dev->sum_mcr += entries * dev->Granularity; 
504    /* IaFFrednInsertCbrSched */
505    // Starting at an arbitrary location, place the entries into the table
506    // as smoothly as possible
507    cbrVC   = 0;
508    spacing = dev->CbrTotEntries / entries;
509    sp_mod  = dev->CbrTotEntries % entries; // get modulo
510    toBeAssigned = entries;
511    fracSlot = 0;
512    vcIndex  = vcc->vci;
513    IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
514    while (toBeAssigned)
515    {
516       // If this is the first time, start the table loading for this connection
517       // as close to entryPoint as possible.
518       if (toBeAssigned == entries)
519       {
520          idealSlot = dev->CbrEntryPt;
521          dev->CbrEntryPt += 2;    // Adding 2 helps to prevent clumping
522          if (dev->CbrEntryPt >= dev->CbrTotEntries) 
523             dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
524       } else {
525          idealSlot += (u32)(spacing + fracSlot); // Point to the next location
526          // in the table that would be  smoothest
527          fracSlot = ((sp_mod + sp_mod2) / entries);  // get new integer part
528          sp_mod2  = ((sp_mod + sp_mod2) % entries);  // calc new fractional part
529       }
530       if (idealSlot >= (int)dev->CbrTotEntries) 
531          idealSlot -= dev->CbrTotEntries;  
532       // Continuously check around this ideal value until a null
533       // location is encountered.
534       SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize); 
535       inc = 0;
536       testSlot = idealSlot;
537       TstSchedTbl = (u16*)(SchedTbl+testSlot);  //set index and read in value
538       IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%x, NumToAssign=%d\n",
539                                 testSlot, (u32)TstSchedTbl,toBeAssigned);) 
540       memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
541       while (cbrVC)  // If another VC at this location, we have to keep looking
542       {
543           inc++;
544           testSlot = idealSlot - inc;
545           if (testSlot < 0) { // Wrap if necessary
546              testSlot += dev->CbrTotEntries;
547              IF_CBR(printk("Testslot Wrap. STable Start=0x%x,Testslot=%d\n",
548                                                        (u32)SchedTbl,testSlot);)
549           }
550           TstSchedTbl = (u16 *)(SchedTbl + testSlot);  // set table index
551           memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC)); 
552           if (!cbrVC)
553              break;
554           testSlot = idealSlot + inc;
555           if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
556              testSlot -= dev->CbrTotEntries;
557              IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
558              IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n", 
559                                             testSlot, toBeAssigned);)
560           } 
561           // set table index and read in value
562           TstSchedTbl = (u16*)(SchedTbl + testSlot);
563           IF_CBR(printk("Reading CBR Tbl from 0x%x, CbrVal=0x%x Iteration %d\n",
564                           (u32)TstSchedTbl,cbrVC,inc);) 
565           memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
566        } /* while */
567        // Move this VCI number into this location of the CBR Sched table.
568        memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex,sizeof(TstSchedTbl));
569        dev->CbrRemEntries--;
570        toBeAssigned--;
571    } /* while */ 
572
573    /* IaFFrednCbrEnable */
574    dev->NumEnabledCBR++;
575    if (dev->NumEnabledCBR == 1) {
576        writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
577        IF_CBR(printk("CBR is enabled\n");)
578    }
579    return 0;
580 }
581 static void ia_cbrVc_close (struct atm_vcc *vcc) {
582    IADEV *iadev;
583    u16 *SchedTbl, NullVci = 0;
584    u32 i, NumFound;
585
586    iadev = INPH_IA_DEV(vcc->dev);
587    iadev->NumEnabledCBR--;
588    SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
589    if (iadev->NumEnabledCBR == 0) {
590       writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
591       IF_CBR (printk("CBR support disabled\n");)
592    }
593    NumFound = 0;
594    for (i=0; i < iadev->CbrTotEntries; i++)
595    {
596       if (*SchedTbl == vcc->vci) {
597          iadev->CbrRemEntries++;
598          *SchedTbl = NullVci;
599          IF_CBR(NumFound++;)
600       }
601       SchedTbl++;   
602    } 
603    IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
604 }
605
606 static int ia_avail_descs(IADEV *iadev) {
607    int tmp = 0;
608    ia_hack_tcq(iadev);
609    if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
610       tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
611    else
612       tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
613                    iadev->ffL.tcq_st) / 2;
614    return tmp;
615 }    
616
617 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
618
619 static int ia_que_tx (IADEV *iadev) { 
620    struct sk_buff *skb;
621    int num_desc;
622    struct atm_vcc *vcc;
623    struct ia_vcc *iavcc;
624    num_desc = ia_avail_descs(iadev);
625
626    while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
627       if (!(vcc = ATM_SKB(skb)->vcc)) {
628          dev_kfree_skb_any(skb);
629          printk("ia_que_tx: Null vcc\n");
630          break;
631       }
632       if (!test_bit(ATM_VF_READY,&vcc->flags)) {
633          dev_kfree_skb_any(skb);
634          printk("Free the SKB on closed vci %d \n", vcc->vci);
635          break;
636       }
637       iavcc = INPH_IA_VCC(vcc);
638       if (ia_pkt_tx (vcc, skb)) {
639          skb_queue_head(&iadev->tx_backlog, skb);
640       }
641       num_desc--;
642    }
643    return 0;
644 }
645
646 static void ia_tx_poll (IADEV *iadev) {
647    struct atm_vcc *vcc = NULL;
648    struct sk_buff *skb = NULL, *skb1 = NULL;
649    struct ia_vcc *iavcc;
650    IARTN_Q *  rtne;
651
652    ia_hack_tcq(iadev);
653    while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
654        skb = rtne->data.txskb;
655        if (!skb) {
656            printk("ia_tx_poll: skb is null\n");
657            goto out;
658        }
659        vcc = ATM_SKB(skb)->vcc;
660        if (!vcc) {
661            printk("ia_tx_poll: vcc is null\n");
662            dev_kfree_skb_any(skb);
663            goto out;
664        }
665
666        iavcc = INPH_IA_VCC(vcc);
667        if (!iavcc) {
668            printk("ia_tx_poll: iavcc is null\n");
669            dev_kfree_skb_any(skb);
670            goto out;
671        }
672
673        skb1 = skb_dequeue(&iavcc->txing_skb);
674        while (skb1 && (skb1 != skb)) {
675           if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
676              printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
677           }
678           IF_ERR(printk("Release the SKB not match\n");)
679           if ((vcc->pop) && (skb1->len != 0))
680           {
681              vcc->pop(vcc, skb1);
682              IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
683                                                           (long)skb1);)
684           }
685           else 
686              dev_kfree_skb_any(skb1);
687           skb1 = skb_dequeue(&iavcc->txing_skb);
688        }                                                        
689        if (!skb1) {
690           IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
691           ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
692           break;
693        }
694        if ((vcc->pop) && (skb->len != 0))
695        {
696           vcc->pop(vcc, skb);
697           IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
698        }
699        else 
700           dev_kfree_skb_any(skb);
701        kfree(rtne);
702     }
703     ia_que_tx(iadev);
704 out:
705     return;
706 }
707 #if 0
708 static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
709 {
710         u32     t;
711         int     i;
712         /*
713          * Issue a command to enable writes to the NOVRAM
714          */
715         NVRAM_CMD (EXTEND + EWEN);
716         NVRAM_CLR_CE;
717         /*
718          * issue the write command
719          */
720         NVRAM_CMD(IAWRITE + addr);
721         /* 
722          * Send the data, starting with D15, then D14, and so on for 16 bits
723          */
724         for (i=15; i>=0; i--) {
725                 NVRAM_CLKOUT (val & 0x8000);
726                 val <<= 1;
727         }
728         NVRAM_CLR_CE;
729         CFG_OR(NVCE);
730         t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS); 
731         while (!(t & NVDO))
732                 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS); 
733
734         NVRAM_CLR_CE;
735         /*
736          * disable writes again
737          */
738         NVRAM_CMD(EXTEND + EWDS)
739         NVRAM_CLR_CE;
740         CFG_AND(~NVDI);
741 }
742 #endif
743
744 static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
745 {
746         u_short val;
747         u32     t;
748         int     i;
749         /*
750          * Read the first bit that was clocked with the falling edge of the
751          * the last command data clock
752          */
753         NVRAM_CMD(IAREAD + addr);
754         /*
755          * Now read the rest of the bits, the next bit read is D14, then D13,
756          * and so on.
757          */
758         val = 0;
759         for (i=15; i>=0; i--) {
760                 NVRAM_CLKIN(t);
761                 val |= (t << i);
762         }
763         NVRAM_CLR_CE;
764         CFG_AND(~NVDI);
765         return val;
766 }
767
768 static void ia_hw_type(IADEV *iadev) {
769    u_short memType = ia_eeprom_get(iadev, 25);   
770    iadev->memType = memType;
771    if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
772       iadev->num_tx_desc = IA_TX_BUF;
773       iadev->tx_buf_sz = IA_TX_BUF_SZ;
774       iadev->num_rx_desc = IA_RX_BUF;
775       iadev->rx_buf_sz = IA_RX_BUF_SZ; 
776    } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
777       if (IA_TX_BUF == DFL_TX_BUFFERS)
778         iadev->num_tx_desc = IA_TX_BUF / 2;
779       else 
780         iadev->num_tx_desc = IA_TX_BUF;
781       iadev->tx_buf_sz = IA_TX_BUF_SZ;
782       if (IA_RX_BUF == DFL_RX_BUFFERS)
783         iadev->num_rx_desc = IA_RX_BUF / 2;
784       else
785         iadev->num_rx_desc = IA_RX_BUF;
786       iadev->rx_buf_sz = IA_RX_BUF_SZ;
787    }
788    else {
789       if (IA_TX_BUF == DFL_TX_BUFFERS) 
790         iadev->num_tx_desc = IA_TX_BUF / 8;
791       else
792         iadev->num_tx_desc = IA_TX_BUF;
793       iadev->tx_buf_sz = IA_TX_BUF_SZ;
794       if (IA_RX_BUF == DFL_RX_BUFFERS)
795         iadev->num_rx_desc = IA_RX_BUF / 8;
796       else
797         iadev->num_rx_desc = IA_RX_BUF;
798       iadev->rx_buf_sz = IA_RX_BUF_SZ; 
799    } 
800    iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz); 
801    IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
802          iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
803          iadev->rx_buf_sz, iadev->rx_pkt_ram);)
804
805 #if 0
806    if ((memType & FE_MASK) == FE_SINGLE_MODE) {
807       iadev->phy_type = PHY_OC3C_S;
808    else if ((memType & FE_MASK) == FE_UTP_OPTION)
809       iadev->phy_type = PHY_UTP155;
810    else
811      iadev->phy_type = PHY_OC3C_M;
812 #endif
813    
814    iadev->phy_type = memType & FE_MASK;
815    IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n", 
816                                          memType,iadev->phy_type);)
817    if (iadev->phy_type == FE_25MBIT_PHY) 
818       iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
819    else if (iadev->phy_type == FE_DS3_PHY)
820       iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
821    else if (iadev->phy_type == FE_E3_PHY) 
822       iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
823    else
824        iadev->LineRate = (u32)(ATM_OC3_PCR);
825    IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
826
827 }
828
829 static void IaFrontEndIntr(IADEV *iadev) {
830   volatile IA_SUNI *suni;
831   volatile ia_mb25_t *mb25;
832   volatile suni_pm7345_t *suni_pm7345;
833   u32 intr_status;
834   u_int frmr_intr;
835
836   if(iadev->phy_type & FE_25MBIT_PHY) {
837      mb25 = (ia_mb25_t*)iadev->phy;
838      iadev->carrier_detect =  Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
839   } else if (iadev->phy_type & FE_DS3_PHY) {
840      suni_pm7345 = (suni_pm7345_t *)iadev->phy;
841      /* clear FRMR interrupts */
842      frmr_intr   = suni_pm7345->suni_ds3_frm_intr_stat; 
843      iadev->carrier_detect =  
844            Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
845   } else if (iadev->phy_type & FE_E3_PHY ) {
846      suni_pm7345 = (suni_pm7345_t *)iadev->phy;
847      frmr_intr   = suni_pm7345->suni_e3_frm_maint_intr_ind;
848      iadev->carrier_detect =
849            Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
850   }
851   else { 
852      suni = (IA_SUNI *)iadev->phy;
853      intr_status = suni->suni_rsop_status & 0xff;
854      iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
855   }
856   if (iadev->carrier_detect)
857     printk("IA: SUNI carrier detected\n");
858   else
859     printk("IA: SUNI carrier lost signal\n"); 
860   return;
861 }
862
863 static void ia_mb25_init (IADEV *iadev)
864 {
865    volatile ia_mb25_t  *mb25 = (ia_mb25_t*)iadev->phy;
866 #if 0
867    mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
868 #endif
869    mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
870    mb25->mb25_diag_control = 0;
871    /*
872     * Initialize carrier detect state
873     */
874    iadev->carrier_detect =  Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
875    return;
876 }                   
877
878 static void ia_suni_pm7345_init (IADEV *iadev)
879 {
880    volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
881    if (iadev->phy_type & FE_DS3_PHY)
882    {
883       iadev->carrier_detect = 
884           Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV)); 
885       suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
886       suni_pm7345->suni_ds3_frm_cfg = 1;
887       suni_pm7345->suni_ds3_tran_cfg = 1;
888       suni_pm7345->suni_config = 0;
889       suni_pm7345->suni_splr_cfg = 0;
890       suni_pm7345->suni_splt_cfg = 0;
891    }
892    else 
893    {
894       iadev->carrier_detect = 
895           Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
896       suni_pm7345->suni_e3_frm_fram_options = 0x4;
897       suni_pm7345->suni_e3_frm_maint_options = 0x20;
898       suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
899       suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
900       suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
901       suni_pm7345->suni_e3_tran_fram_options = 0x1;
902       suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
903       suni_pm7345->suni_splr_cfg = 0x41;
904       suni_pm7345->suni_splt_cfg = 0x41;
905    } 
906    /*
907     * Enable RSOP loss of signal interrupt.
908     */
909    suni_pm7345->suni_intr_enbl = 0x28;
910  
911    /*
912     * Clear error counters
913     */
914    suni_pm7345->suni_id_reset = 0;
915
916    /*
917     * Clear "PMCTST" in master test register.
918     */
919    suni_pm7345->suni_master_test = 0;
920
921    suni_pm7345->suni_rxcp_ctrl = 0x2c;
922    suni_pm7345->suni_rxcp_fctrl = 0x81;
923  
924    suni_pm7345->suni_rxcp_idle_pat_h1 =
925         suni_pm7345->suni_rxcp_idle_pat_h2 =
926         suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
927    suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
928  
929    suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
930    suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
931    suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
932    suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
933  
934    suni_pm7345->suni_rxcp_cell_pat_h1 =
935         suni_pm7345->suni_rxcp_cell_pat_h2 =
936         suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
937    suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
938  
939    suni_pm7345->suni_rxcp_cell_mask_h1 =
940         suni_pm7345->suni_rxcp_cell_mask_h2 =
941         suni_pm7345->suni_rxcp_cell_mask_h3 =
942         suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
943  
944    suni_pm7345->suni_txcp_ctrl = 0xa4;
945    suni_pm7345->suni_txcp_intr_en_sts = 0x10;
946    suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
947  
948    suni_pm7345->suni_config &= ~(SUNI_PM7345_LLB |
949                                  SUNI_PM7345_CLB |
950                                  SUNI_PM7345_DLB |
951                                   SUNI_PM7345_PLB);
952 #ifdef __SNMP__
953    suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
954 #endif /* __SNMP__ */
955    return;
956 }
957
958
959 /***************************** IA_LIB END *****************************/
960     
961 static int tcnter = 0;
962 static void xdump( u_char*  cp, int  length, char*  prefix )
963 {
964     int col, count;
965     u_char prntBuf[120];
966     u_char*  pBuf = prntBuf;
967     count = 0;
968     while(count < length){
969         pBuf += sprintf( pBuf, "%s", prefix );
970         for(col = 0;count + col < length && col < 16; col++){
971             if (col != 0 && (col % 4) == 0)
972                 pBuf += sprintf( pBuf, " " );
973             pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
974         }
975         while(col++ < 16){      /* pad end of buffer with blanks */
976             if ((col % 4) == 0)
977                 sprintf( pBuf, " " );
978             pBuf += sprintf( pBuf, "   " );
979         }
980         pBuf += sprintf( pBuf, "  " );
981         for(col = 0;count + col < length && col < 16; col++){
982             if (isprint((int)cp[count + col]))
983                 pBuf += sprintf( pBuf, "%c", cp[count + col] );
984             else
985                 pBuf += sprintf( pBuf, "." );
986                 }
987         sprintf( pBuf, "\n" );
988         // SPrint(prntBuf);
989         printk(prntBuf);
990         count += col;
991         pBuf = prntBuf;
992     }
993
994 }  /* close xdump(... */
995
996   
997 static struct atm_dev *ia_boards = NULL;  
998   
999 #define ACTUAL_RAM_BASE \
1000         RAM_BASE*((iadev->mem)/(128 * 1024))  
1001 #define ACTUAL_SEG_RAM_BASE \
1002         IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))  
1003 #define ACTUAL_REASS_RAM_BASE \
1004         IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))  
1005   
1006   
1007 /*-- some utilities and memory allocation stuff will come here -------------*/  
1008   
1009 static void desc_dbg(IADEV *iadev) {
1010
1011   u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1012   u32 i;
1013   void __iomem *tmp;
1014   // regval = readl((u32)ia_cmds->maddr);
1015   tcq_wr_ptr =  readw(iadev->seg_reg+TCQ_WR_PTR);
1016   printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1017                      tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1018                      readw(iadev->seg_ram+tcq_wr_ptr-2));
1019   printk(" host_tcq_wr = 0x%x  host_tcq_rd = 0x%x \n",  iadev->host_tcq_wr, 
1020                    iadev->ffL.tcq_rd);
1021   tcq_st_ptr =  readw(iadev->seg_reg+TCQ_ST_ADR);
1022   tcq_ed_ptr =  readw(iadev->seg_reg+TCQ_ED_ADR);
1023   printk("tcq_st_ptr = 0x%x    tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1024   i = 0;
1025   while (tcq_st_ptr != tcq_ed_ptr) {
1026       tmp = iadev->seg_ram+tcq_st_ptr;
1027       printk("TCQ slot %d desc = %d  Addr = %p\n", i++, readw(tmp), tmp);
1028       tcq_st_ptr += 2;
1029   }
1030   for(i=0; i <iadev->num_tx_desc; i++)
1031       printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1032
1033   
1034   
1035 /*----------------------------- Recieving side stuff --------------------------*/  
1036  
1037 static void rx_excp_rcvd(struct atm_dev *dev)  
1038 {  
1039 #if 0 /* closing the receiving size will cause too many excp int */  
1040   IADEV *iadev;  
1041   u_short state;  
1042   u_short excpq_rd_ptr;  
1043   //u_short *ptr;  
1044   int vci, error = 1;  
1045   iadev = INPH_IA_DEV(dev);  
1046   state = readl(iadev->reass_reg + STATE_REG) & 0xffff;  
1047   while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)  
1048   { printk("state = %x \n", state); 
1049         excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;  
1050  printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr); 
1051         if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1052             IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1053         // TODO: update exception stat
1054         vci = readw(iadev->reass_ram+excpq_rd_ptr);  
1055         error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;  
1056         // pwang_test
1057         excpq_rd_ptr += 4;  
1058         if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))  
1059             excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1060         writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);  
1061         state = readl(iadev->reass_reg + STATE_REG) & 0xffff;  
1062   }  
1063 #endif
1064 }  
1065   
1066 static void free_desc(struct atm_dev *dev, int desc)  
1067 {  
1068         IADEV *iadev;  
1069         iadev = INPH_IA_DEV(dev);  
1070         writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr); 
1071         iadev->rfL.fdq_wr +=2;
1072         if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1073                 iadev->rfL.fdq_wr =  iadev->rfL.fdq_st;  
1074         writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);  
1075 }  
1076   
1077   
1078 static int rx_pkt(struct atm_dev *dev)  
1079 {  
1080         IADEV *iadev;  
1081         struct atm_vcc *vcc;  
1082         unsigned short status;  
1083         struct rx_buf_desc __iomem *buf_desc_ptr;  
1084         int desc;   
1085         struct dle* wr_ptr;  
1086         int len;  
1087         struct sk_buff *skb;  
1088         u_int buf_addr, dma_addr;  
1089
1090         iadev = INPH_IA_DEV(dev);  
1091         if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff)) 
1092         {  
1093             printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);  
1094             return -EINVAL;  
1095         }  
1096         /* mask 1st 3 bits to get the actual descno. */  
1097         desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;  
1098         IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n", 
1099                                     iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1100               printk(" pcq_wr_ptr = 0x%x\n",
1101                                readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1102         /* update the read pointer  - maybe we shud do this in the end*/  
1103         if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed) 
1104                 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;  
1105         else  
1106                 iadev->rfL.pcq_rd += 2;
1107         writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);  
1108   
1109         /* get the buffer desc entry.  
1110                 update stuff. - doesn't seem to be any update necessary  
1111         */  
1112         buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1113         /* make the ptr point to the corresponding buffer desc entry */  
1114         buf_desc_ptr += desc;     
1115         if (!desc || (desc > iadev->num_rx_desc) || 
1116                       ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) { 
1117             free_desc(dev, desc);
1118             IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1119             return -1;
1120         }
1121         vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];  
1122         if (!vcc)  
1123         {      
1124                 free_desc(dev, desc); 
1125                 printk("IA: null vcc, drop PDU\n");  
1126                 return -1;  
1127         }  
1128           
1129   
1130         /* might want to check the status bits for errors */  
1131         status = (u_short) (buf_desc_ptr->desc_mode);  
1132         if (status & (RX_CER | RX_PTE | RX_OFL))  
1133         {  
1134                 atomic_inc(&vcc->stats->rx_err);
1135                 IF_ERR(printk("IA: bad packet, dropping it");)  
1136                 if (status & RX_CER) { 
1137                     IF_ERR(printk(" cause: packet CRC error\n");)
1138                 }
1139                 else if (status & RX_PTE) {
1140                     IF_ERR(printk(" cause: packet time out\n");)
1141                 }
1142                 else {
1143                     IF_ERR(printk(" cause: buffer over flow\n");)
1144                 }
1145                 goto out_free_desc;
1146         }  
1147   
1148         /*  
1149                 build DLE.        
1150         */  
1151   
1152         buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;  
1153         dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;  
1154         len = dma_addr - buf_addr;  
1155         if (len > iadev->rx_buf_sz) {
1156            printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1157            atomic_inc(&vcc->stats->rx_err);
1158            goto out_free_desc;
1159         }
1160                   
1161         if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1162            if (vcc->vci < 32)
1163               printk("Drop control packets\n");
1164               goto out_free_desc;
1165         }
1166         skb_put(skb,len);  
1167         // pwang_test
1168         ATM_SKB(skb)->vcc = vcc;
1169         ATM_DESC(skb) = desc;        
1170         skb_queue_tail(&iadev->rx_dma_q, skb);  
1171
1172         /* Build the DLE structure */  
1173         wr_ptr = iadev->rx_dle_q.write;  
1174         wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
1175                 len, PCI_DMA_FROMDEVICE);
1176         wr_ptr->local_pkt_addr = buf_addr;  
1177         wr_ptr->bytes = len;    /* We don't know this do we ?? */  
1178         wr_ptr->mode = DMA_INT_ENABLE;  
1179   
1180         /* shud take care of wrap around here too. */  
1181         if(++wr_ptr == iadev->rx_dle_q.end)
1182              wr_ptr = iadev->rx_dle_q.start;
1183         iadev->rx_dle_q.write = wr_ptr;  
1184         udelay(1);  
1185         /* Increment transaction counter */  
1186         writel(1, iadev->dma+IPHASE5575_RX_COUNTER);   
1187 out:    return 0;  
1188 out_free_desc:
1189         free_desc(dev, desc);
1190         goto out;
1191 }  
1192   
1193 static void rx_intr(struct atm_dev *dev)  
1194 {  
1195   IADEV *iadev;  
1196   u_short status;  
1197   u_short state, i;  
1198   
1199   iadev = INPH_IA_DEV(dev);  
1200   status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;  
1201   IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1202   if (status & RX_PKT_RCVD)  
1203   {  
1204         /* do something */  
1205         /* Basically recvd an interrupt for receving a packet.  
1206         A descriptor would have been written to the packet complete   
1207         queue. Get all the descriptors and set up dma to move the   
1208         packets till the packet complete queue is empty..  
1209         */  
1210         state = readl(iadev->reass_reg + STATE_REG) & 0xffff;  
1211         IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);) 
1212         while(!(state & PCQ_EMPTY))  
1213         {  
1214              rx_pkt(dev);  
1215              state = readl(iadev->reass_reg + STATE_REG) & 0xffff;  
1216         }  
1217         iadev->rxing = 1;
1218   }  
1219   if (status & RX_FREEQ_EMPT)  
1220   {   
1221      if (iadev->rxing) {
1222         iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1223         iadev->rx_tmp_jif = jiffies; 
1224         iadev->rxing = 0;
1225      } 
1226      else if (((jiffies - iadev->rx_tmp_jif) > 50) && 
1227                ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1228         for (i = 1; i <= iadev->num_rx_desc; i++)
1229                free_desc(dev, i);
1230 printk("Test logic RUN!!!!\n");
1231         writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1232         iadev->rxing = 1;
1233      }
1234      IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)  
1235   }  
1236
1237   if (status & RX_EXCP_RCVD)  
1238   {  
1239         /* probably need to handle the exception queue also. */  
1240         IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)  
1241         rx_excp_rcvd(dev);  
1242   }  
1243
1244
1245   if (status & RX_RAW_RCVD)  
1246   {  
1247         /* need to handle the raw incoming cells. This deepnds on   
1248         whether we have programmed to receive the raw cells or not.  
1249         Else ignore. */  
1250         IF_EVENT(printk("Rx intr status:  RX_RAW_RCVD %08x\n", status);)  
1251   }  
1252 }  
1253   
1254   
1255 static void rx_dle_intr(struct atm_dev *dev)  
1256 {  
1257   IADEV *iadev;  
1258   struct atm_vcc *vcc;   
1259   struct sk_buff *skb;  
1260   int desc;  
1261   u_short state;   
1262   struct dle *dle, *cur_dle;  
1263   u_int dle_lp;  
1264   int len;
1265   iadev = INPH_IA_DEV(dev);  
1266  
1267   /* free all the dles done, that is just update our own dle read pointer   
1268         - do we really need to do this. Think not. */  
1269   /* DMA is done, just get all the recevie buffers from the rx dma queue  
1270         and push them up to the higher layer protocol. Also free the desc  
1271         associated with the buffer. */  
1272   dle = iadev->rx_dle_q.read;  
1273   dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);  
1274   cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));  
1275   while(dle != cur_dle)  
1276   {  
1277       /* free the DMAed skb */  
1278       skb = skb_dequeue(&iadev->rx_dma_q);  
1279       if (!skb)  
1280          goto INCR_DLE;
1281       desc = ATM_DESC(skb);
1282       free_desc(dev, desc);  
1283                
1284       if (!(len = skb->len))
1285       {  
1286           printk("rx_dle_intr: skb len 0\n");  
1287           dev_kfree_skb_any(skb);  
1288       }  
1289       else  
1290       {  
1291           struct cpcs_trailer *trailer;
1292           u_short length;
1293           struct ia_vcc *ia_vcc;
1294
1295           pci_unmap_single(iadev->pci, iadev->rx_dle_q.write->sys_pkt_addr,
1296                 len, PCI_DMA_FROMDEVICE);
1297           /* no VCC related housekeeping done as yet. lets see */  
1298           vcc = ATM_SKB(skb)->vcc;
1299           if (!vcc) {
1300               printk("IA: null vcc\n");  
1301               dev_kfree_skb_any(skb);
1302               goto INCR_DLE;
1303           }
1304           ia_vcc = INPH_IA_VCC(vcc);
1305           if (ia_vcc == NULL)
1306           {
1307              atomic_inc(&vcc->stats->rx_err);
1308              dev_kfree_skb_any(skb);
1309              atm_return(vcc, atm_guess_pdu2truesize(len));
1310              goto INCR_DLE;
1311            }
1312           // get real pkt length  pwang_test
1313           trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1314                                  skb->len - sizeof(*trailer));
1315           length =  swap(trailer->length);
1316           if ((length > iadev->rx_buf_sz) || (length > 
1317                               (skb->len - sizeof(struct cpcs_trailer))))
1318           {
1319              atomic_inc(&vcc->stats->rx_err);
1320              IF_ERR(printk("rx_dle_intr: Bad  AAL5 trailer %d (skb len %d)", 
1321                                                             length, skb->len);)
1322              dev_kfree_skb_any(skb);
1323              atm_return(vcc, atm_guess_pdu2truesize(len));
1324              goto INCR_DLE;
1325           }
1326           skb_trim(skb, length);
1327           
1328           /* Display the packet */  
1329           IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);  
1330           xdump(skb->data, skb->len, "RX: ");
1331           printk("\n");)
1332
1333           IF_RX(printk("rx_dle_intr: skb push");)  
1334           vcc->push(vcc,skb);  
1335           atomic_inc(&vcc->stats->rx);
1336           iadev->rx_pkt_cnt++;
1337       }  
1338 INCR_DLE:
1339       if (++dle == iadev->rx_dle_q.end)  
1340           dle = iadev->rx_dle_q.start;  
1341   }  
1342   iadev->rx_dle_q.read = dle;  
1343   
1344   /* if the interrupts are masked because there were no free desc available,  
1345                 unmask them now. */ 
1346   if (!iadev->rxing) {
1347      state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1348      if (!(state & FREEQ_EMPTY)) {
1349         state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1350         writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1351                                       iadev->reass_reg+REASS_MASK_REG);
1352         iadev->rxing++; 
1353      }
1354   }
1355 }  
1356   
1357   
1358 static int open_rx(struct atm_vcc *vcc)  
1359 {  
1360         IADEV *iadev;  
1361         u_short __iomem *vc_table;  
1362         u_short __iomem *reass_ptr;  
1363         IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1364
1365         if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;    
1366         iadev = INPH_IA_DEV(vcc->dev);  
1367         if (vcc->qos.rxtp.traffic_class == ATM_ABR) {  
1368            if (iadev->phy_type & FE_25MBIT_PHY) {
1369                printk("IA:  ABR not support\n");
1370                return -EINVAL; 
1371            }
1372         }
1373         /* Make only this VCI in the vc table valid and let all   
1374                 others be invalid entries */  
1375         vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1376         vc_table += vcc->vci;
1377         /* mask the last 6 bits and OR it with 3 for 1K VCs */  
1378
1379         *vc_table = vcc->vci << 6;
1380         /* Also keep a list of open rx vcs so that we can attach them with  
1381                 incoming PDUs later. */  
1382         if ((vcc->qos.rxtp.traffic_class == ATM_ABR) || 
1383                                 (vcc->qos.txtp.traffic_class == ATM_ABR))  
1384         {  
1385                 srv_cls_param_t srv_p;
1386                 init_abr_vc(iadev, &srv_p);
1387                 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1388         } 
1389         else {  /* for UBR  later may need to add CBR logic */
1390                 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1391                 reass_ptr += vcc->vci;
1392                 *reass_ptr = NO_AAL5_PKT;
1393         }
1394         
1395         if (iadev->rx_open[vcc->vci])  
1396                 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",  
1397                         vcc->dev->number, vcc->vci);  
1398         iadev->rx_open[vcc->vci] = vcc;  
1399         return 0;  
1400 }  
1401   
1402 static int rx_init(struct atm_dev *dev)  
1403 {  
1404         IADEV *iadev;  
1405         struct rx_buf_desc __iomem *buf_desc_ptr;  
1406         unsigned long rx_pkt_start = 0;  
1407         void *dle_addr;  
1408         struct abr_vc_table  *abr_vc_table; 
1409         u16 *vc_table;  
1410         u16 *reass_table;  
1411         u16 *ptr16;
1412         int i,j, vcsize_sel;  
1413         u_short freeq_st_adr;  
1414         u_short *freeq_start;  
1415   
1416         iadev = INPH_IA_DEV(dev);  
1417   //    spin_lock_init(&iadev->rx_lock); 
1418   
1419         /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1420         dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1421                                         &iadev->rx_dle_dma);  
1422         if (!dle_addr)  {  
1423                 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1424                 goto err_out;
1425         }
1426         iadev->rx_dle_q.start = (struct dle*)dle_addr;  
1427         iadev->rx_dle_q.read = iadev->rx_dle_q.start;  
1428         iadev->rx_dle_q.write = iadev->rx_dle_q.start;  
1429         iadev->rx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);  
1430         /* the end of the dle q points to the entry after the last  
1431         DLE that can be used. */  
1432   
1433         /* write the upper 20 bits of the start address to rx list address register */  
1434         writel(iadev->rx_dle_dma & 0xfffff000,
1435                iadev->dma + IPHASE5575_RX_LIST_ADDR);  
1436         IF_INIT(printk("Tx Dle list addr: 0x%08x value: 0x%0x\n", 
1437                       (u32)(iadev->dma+IPHASE5575_TX_LIST_ADDR), 
1438                       *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));  
1439         printk("Rx Dle list addr: 0x%08x value: 0x%0x\n", 
1440                       (u32)(iadev->dma+IPHASE5575_RX_LIST_ADDR), 
1441                       *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)  
1442   
1443         writew(0xffff, iadev->reass_reg+REASS_MASK_REG);  
1444         writew(0, iadev->reass_reg+MODE_REG);  
1445         writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);  
1446   
1447         /* Receive side control memory map  
1448            -------------------------------  
1449   
1450                 Buffer descr    0x0000 (736 - 23K)  
1451                 VP Table        0x5c00 (256 - 512)  
1452                 Except q        0x5e00 (128 - 512)  
1453                 Free buffer q   0x6000 (1K - 2K)  
1454                 Packet comp q   0x6800 (1K - 2K)  
1455                 Reass Table     0x7000 (1K - 2K)  
1456                 VC Table        0x7800 (1K - 2K)  
1457                 ABR VC Table    0x8000 (1K - 32K)  
1458         */  
1459           
1460         /* Base address for Buffer Descriptor Table */  
1461         writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);  
1462         /* Set the buffer size register */  
1463         writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);  
1464   
1465         /* Initialize each entry in the Buffer Descriptor Table */  
1466         iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1467         buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1468         memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1469         buf_desc_ptr++;  
1470         rx_pkt_start = iadev->rx_pkt_ram;  
1471         for(i=1; i<=iadev->num_rx_desc; i++)  
1472         {  
1473                 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));  
1474                 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;  
1475                 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;  
1476                 buf_desc_ptr++;           
1477                 rx_pkt_start += iadev->rx_buf_sz;  
1478         }  
1479         IF_INIT(printk("Rx Buffer desc ptr: 0x%0x\n", (u32)(buf_desc_ptr));)  
1480         i = FREE_BUF_DESC_Q*iadev->memSize; 
1481         writew(i >> 16,  iadev->reass_reg+REASS_QUEUE_BASE); 
1482         writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1483         writew(i+iadev->num_rx_desc*sizeof(u_short), 
1484                                          iadev->reass_reg+FREEQ_ED_ADR);
1485         writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1486         writew(i+iadev->num_rx_desc*sizeof(u_short), 
1487                                         iadev->reass_reg+FREEQ_WR_PTR);    
1488         /* Fill the FREEQ with all the free descriptors. */  
1489         freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);  
1490         freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);  
1491         for(i=1; i<=iadev->num_rx_desc; i++)  
1492         {  
1493                 *freeq_start = (u_short)i;  
1494                 freeq_start++;  
1495         }  
1496         IF_INIT(printk("freeq_start: 0x%0x\n", (u32)freeq_start);)  
1497         /* Packet Complete Queue */
1498         i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1499         writew(i, iadev->reass_reg+PCQ_ST_ADR);
1500         writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1501         writew(i, iadev->reass_reg+PCQ_RD_PTR);
1502         writew(i, iadev->reass_reg+PCQ_WR_PTR);
1503
1504         /* Exception Queue */
1505         i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1506         writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1507         writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q), 
1508                                              iadev->reass_reg+EXCP_Q_ED_ADR);
1509         writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1510         writew(i, iadev->reass_reg+EXCP_Q_WR_PTR); 
1511  
1512         /* Load local copy of FREEQ and PCQ ptrs */
1513         iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1514         iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1515         iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1516         iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1517         iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1518         iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1519         iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1520         iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1521         
1522         IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x", 
1523               iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd, 
1524               iadev->rfL.pcq_wr);)                
1525         /* just for check - no VP TBL */  
1526         /* VP Table */  
1527         /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */  
1528         /* initialize VP Table for invalid VPIs  
1529                 - I guess we can write all 1s or 0x000f in the entire memory  
1530                   space or something similar.  
1531         */  
1532   
1533         /* This seems to work and looks right to me too !!! */  
1534         i =  REASS_TABLE * iadev->memSize;
1535         writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);   
1536         /* initialize Reassembly table to I don't know what ???? */  
1537         reass_table = (u16 *)(iadev->reass_ram+i);  
1538         j = REASS_TABLE_SZ * iadev->memSize;
1539         for(i=0; i < j; i++)  
1540                 *reass_table++ = NO_AAL5_PKT;  
1541        i = 8*1024;
1542        vcsize_sel =  0;
1543        while (i != iadev->num_vc) {
1544           i /= 2;
1545           vcsize_sel++;
1546        }
1547        i = RX_VC_TABLE * iadev->memSize;
1548        writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1549        vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);  
1550         j = RX_VC_TABLE_SZ * iadev->memSize;
1551         for(i = 0; i < j; i++)  
1552         {  
1553                 /* shift the reassembly pointer by 3 + lower 3 bits of   
1554                 vc_lkup_base register (=3 for 1K VCs) and the last byte   
1555                 is those low 3 bits.   
1556                 Shall program this later.  
1557                 */  
1558                 *vc_table = (i << 6) | 15;      /* for invalid VCI */  
1559                 vc_table++;  
1560         }  
1561         /* ABR VC table */
1562         i =  ABR_VC_TABLE * iadev->memSize;
1563         writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1564                    
1565         i = ABR_VC_TABLE * iadev->memSize;
1566         abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);  
1567         j = REASS_TABLE_SZ * iadev->memSize;
1568         memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1569         for(i = 0; i < j; i++) {                
1570                 abr_vc_table->rdf = 0x0003;
1571                 abr_vc_table->air = 0x5eb1;
1572                 abr_vc_table++;         
1573         }  
1574
1575         /* Initialize other registers */  
1576   
1577         /* VP Filter Register set for VC Reassembly only */  
1578         writew(0xff00, iadev->reass_reg+VP_FILTER);  
1579         writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1580         writew(0x1,  iadev->reass_reg+PROTOCOL_ID);
1581
1582         /* Packet Timeout Count  related Registers : 
1583            Set packet timeout to occur in about 3 seconds
1584            Set Packet Aging Interval count register to overflow in about 4 us
1585         */  
1586         writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
1587         ptr16 = (u16*)j;
1588         i = ((u32)ptr16 >> 6) & 0xff;
1589         ptr16  += j - 1;
1590         i |=(((u32)ptr16 << 2) & 0xff00);
1591         writew(i, iadev->reass_reg+TMOUT_RANGE);
1592         /* initiate the desc_tble */
1593         for(i=0; i<iadev->num_tx_desc;i++)
1594             iadev->desc_tbl[i].timestamp = 0;
1595
1596         /* to clear the interrupt status register - read it */  
1597         readw(iadev->reass_reg+REASS_INTR_STATUS_REG);   
1598   
1599         /* Mask Register - clear it */  
1600         writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);  
1601   
1602         skb_queue_head_init(&iadev->rx_dma_q);  
1603         iadev->rx_free_desc_qhead = NULL;   
1604         iadev->rx_open = kmalloc(4*iadev->num_vc,GFP_KERNEL);
1605         if (!iadev->rx_open)  
1606         {  
1607                 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1608                 dev->number);  
1609                 goto err_free_dle;
1610         }  
1611         memset(iadev->rx_open, 0, 4*iadev->num_vc);  
1612         iadev->rxing = 1;
1613         iadev->rx_pkt_cnt = 0;
1614         /* Mode Register */  
1615         writew(R_ONLINE, iadev->reass_reg+MODE_REG);  
1616         return 0;  
1617
1618 err_free_dle:
1619         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1620                             iadev->rx_dle_dma);  
1621 err_out:
1622         return -ENOMEM;
1623 }  
1624   
1625
1626 /*  
1627         The memory map suggested in appendix A and the coding for it.   
1628         Keeping it around just in case we change our mind later.  
1629   
1630                 Buffer descr    0x0000 (128 - 4K)  
1631                 UBR sched       0x1000 (1K - 4K)  
1632                 UBR Wait q      0x2000 (1K - 4K)  
1633                 Commn queues    0x3000 Packet Ready, Trasmit comp(0x3100)  
1634                                         (128 - 256) each  
1635                 extended VC     0x4000 (1K - 8K)  
1636                 ABR sched       0x6000  and ABR wait queue (1K - 2K) each  
1637                 CBR sched       0x7000 (as needed)  
1638                 VC table        0x8000 (1K - 32K)  
1639 */  
1640   
1641 static void tx_intr(struct atm_dev *dev)  
1642 {  
1643         IADEV *iadev;  
1644         unsigned short status;  
1645         unsigned long flags;
1646
1647         iadev = INPH_IA_DEV(dev);  
1648   
1649         status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);  
1650         if (status & TRANSMIT_DONE){
1651
1652            IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1653            spin_lock_irqsave(&iadev->tx_lock, flags);
1654            ia_tx_poll(iadev);
1655            spin_unlock_irqrestore(&iadev->tx_lock, flags);
1656            writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1657            if (iadev->close_pending)  
1658                wake_up(&iadev->close_wait);
1659         }         
1660         if (status & TCQ_NOT_EMPTY)  
1661         {  
1662             IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)  
1663         }  
1664 }  
1665   
1666 static void tx_dle_intr(struct atm_dev *dev)
1667 {
1668         IADEV *iadev;
1669         struct dle *dle, *cur_dle; 
1670         struct sk_buff *skb;
1671         struct atm_vcc *vcc;
1672         struct ia_vcc  *iavcc;
1673         u_int dle_lp;
1674         unsigned long flags;
1675
1676         iadev = INPH_IA_DEV(dev);
1677         spin_lock_irqsave(&iadev->tx_lock, flags);   
1678         dle = iadev->tx_dle_q.read;
1679         dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) & 
1680                                         (sizeof(struct dle)*DLE_ENTRIES - 1);
1681         cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1682         while (dle != cur_dle)
1683         {
1684             /* free the DMAed skb */ 
1685             skb = skb_dequeue(&iadev->tx_dma_q); 
1686             if (!skb) break;
1687
1688             /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1689             if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1690                 pci_unmap_single(iadev->pci, dle->sys_pkt_addr, skb->len,
1691                                  PCI_DMA_TODEVICE);
1692             }
1693             vcc = ATM_SKB(skb)->vcc;
1694             if (!vcc) {
1695                   printk("tx_dle_intr: vcc is null\n");
1696                   spin_unlock_irqrestore(&iadev->tx_lock, flags);
1697                   dev_kfree_skb_any(skb);
1698
1699                   return;
1700             }
1701             iavcc = INPH_IA_VCC(vcc);
1702             if (!iavcc) {
1703                   printk("tx_dle_intr: iavcc is null\n");
1704                   spin_unlock_irqrestore(&iadev->tx_lock, flags);
1705                   dev_kfree_skb_any(skb);
1706                   return;
1707             }
1708             if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1709                if ((vcc->pop) && (skb->len != 0))
1710                {     
1711                  vcc->pop(vcc, skb);
1712                } 
1713                else {
1714                  dev_kfree_skb_any(skb);
1715                }
1716             }
1717             else { /* Hold the rate-limited skb for flow control */
1718                IA_SKB_STATE(skb) |= IA_DLED;
1719                skb_queue_tail(&iavcc->txing_skb, skb);
1720             }
1721             IF_EVENT(printk("tx_dle_intr: enque skb = 0x%x \n", (u32)skb);)
1722             if (++dle == iadev->tx_dle_q.end)
1723                  dle = iadev->tx_dle_q.start;
1724         }
1725         iadev->tx_dle_q.read = dle;
1726         spin_unlock_irqrestore(&iadev->tx_lock, flags);
1727 }
1728   
1729 static int open_tx(struct atm_vcc *vcc)  
1730 {  
1731         struct ia_vcc *ia_vcc;  
1732         IADEV *iadev;  
1733         struct main_vc *vc;  
1734         struct ext_vc *evc;  
1735         int ret;
1736         IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)  
1737         if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;  
1738         iadev = INPH_IA_DEV(vcc->dev);  
1739         
1740         if (iadev->phy_type & FE_25MBIT_PHY) {
1741            if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1742                printk("IA:  ABR not support\n");
1743                return -EINVAL; 
1744            }
1745           if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1746                printk("IA:  CBR not support\n");
1747                return -EINVAL; 
1748           }
1749         }
1750         ia_vcc =  INPH_IA_VCC(vcc);
1751         memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1752         if (vcc->qos.txtp.max_sdu > 
1753                          (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1754            printk("IA:  SDU size over (%d) the configured SDU size %d\n",
1755                   vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1756            vcc->dev_data = NULL;
1757            kfree(ia_vcc);
1758            return -EINVAL; 
1759         }
1760         ia_vcc->vc_desc_cnt = 0;
1761         ia_vcc->txing = 1;
1762
1763         /* find pcr */
1764         if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR) 
1765            vcc->qos.txtp.pcr = iadev->LineRate;
1766         else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1767            vcc->qos.txtp.pcr = iadev->LineRate;
1768         else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0)) 
1769            vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1770         if (vcc->qos.txtp.pcr > iadev->LineRate)
1771              vcc->qos.txtp.pcr = iadev->LineRate;
1772         ia_vcc->pcr = vcc->qos.txtp.pcr;
1773
1774         if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1775         else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1776         else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1777         else ia_vcc->ltimeout = 2700 * HZ  / ia_vcc->pcr;
1778         if (ia_vcc->pcr < iadev->rate_limit)
1779            skb_queue_head_init (&ia_vcc->txing_skb);
1780         if (ia_vcc->pcr < iadev->rate_limit) {
1781            struct sock *sk = sk_atm(vcc);
1782
1783            if (vcc->qos.txtp.max_sdu != 0) {
1784                if (ia_vcc->pcr > 60000)
1785                   sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1786                else if (ia_vcc->pcr > 2000)
1787                   sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1788                else
1789                  sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1790            }
1791            else
1792              sk->sk_sndbuf = 24576;
1793         }
1794            
1795         vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;  
1796         evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;  
1797         vc += vcc->vci;  
1798         evc += vcc->vci;  
1799         memset((caddr_t)vc, 0, sizeof(*vc));  
1800         memset((caddr_t)evc, 0, sizeof(*evc));  
1801           
1802         /* store the most significant 4 bits of vci as the last 4 bits   
1803                 of first part of atm header.  
1804            store the last 12 bits of vci as first 12 bits of the second  
1805                 part of the atm header.  
1806         */  
1807         evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;  
1808         evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;  
1809  
1810         /* check the following for different traffic classes */  
1811         if (vcc->qos.txtp.traffic_class == ATM_UBR)  
1812         {  
1813                 vc->type = UBR;  
1814                 vc->status = CRC_APPEND;
1815                 vc->acr = cellrate_to_float(iadev->LineRate);  
1816                 if (vcc->qos.txtp.pcr > 0) 
1817                    vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);  
1818                 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n", 
1819                                              vcc->qos.txtp.max_pcr,vc->acr);)
1820         }  
1821         else if (vcc->qos.txtp.traffic_class == ATM_ABR)  
1822         {       srv_cls_param_t srv_p;
1823                 IF_ABR(printk("Tx ABR VCC\n");)  
1824                 init_abr_vc(iadev, &srv_p);
1825                 if (vcc->qos.txtp.pcr > 0) 
1826                    srv_p.pcr = vcc->qos.txtp.pcr;
1827                 if (vcc->qos.txtp.min_pcr > 0) {
1828                    int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1829                    if (tmpsum > iadev->LineRate)
1830                        return -EBUSY;
1831                    srv_p.mcr = vcc->qos.txtp.min_pcr;
1832                    iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1833                 } 
1834                 else srv_p.mcr = 0;
1835                 if (vcc->qos.txtp.icr)
1836                    srv_p.icr = vcc->qos.txtp.icr;
1837                 if (vcc->qos.txtp.tbe)
1838                    srv_p.tbe = vcc->qos.txtp.tbe;
1839                 if (vcc->qos.txtp.frtt)
1840                    srv_p.frtt = vcc->qos.txtp.frtt;
1841                 if (vcc->qos.txtp.rif)
1842                    srv_p.rif = vcc->qos.txtp.rif;
1843                 if (vcc->qos.txtp.rdf)
1844                    srv_p.rdf = vcc->qos.txtp.rdf;
1845                 if (vcc->qos.txtp.nrm_pres)
1846                    srv_p.nrm = vcc->qos.txtp.nrm;
1847                 if (vcc->qos.txtp.trm_pres)
1848                    srv_p.trm = vcc->qos.txtp.trm;
1849                 if (vcc->qos.txtp.adtf_pres)
1850                    srv_p.adtf = vcc->qos.txtp.adtf;
1851                 if (vcc->qos.txtp.cdf_pres)
1852                    srv_p.cdf = vcc->qos.txtp.cdf;    
1853                 if (srv_p.icr > srv_p.pcr)
1854                    srv_p.icr = srv_p.pcr;    
1855                 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d  mcr = %d\n", 
1856                                                       srv_p.pcr, srv_p.mcr);)
1857                 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1858         } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1859                 if (iadev->phy_type & FE_25MBIT_PHY) {
1860                     printk("IA:  CBR not support\n");
1861                     return -EINVAL; 
1862                 }
1863                 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1864                    IF_CBR(printk("PCR is not availble\n");)
1865                    return -1;
1866                 }
1867                 vc->type = CBR;
1868                 vc->status = CRC_APPEND;
1869                 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {     
1870                     return ret;
1871                 }
1872        } 
1873         else  
1874            printk("iadev:  Non UBR, ABR and CBR traffic not supportedn"); 
1875         
1876         iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1877         IF_EVENT(printk("ia open_tx returning \n");)  
1878         return 0;  
1879 }  
1880   
1881   
1882 static int tx_init(struct atm_dev *dev)  
1883 {  
1884         IADEV *iadev;  
1885         struct tx_buf_desc *buf_desc_ptr;
1886         unsigned int tx_pkt_start;  
1887         void *dle_addr;  
1888         int i;  
1889         u_short tcq_st_adr;  
1890         u_short *tcq_start;  
1891         u_short prq_st_adr;  
1892         u_short *prq_start;  
1893         struct main_vc *vc;  
1894         struct ext_vc *evc;   
1895         u_short tmp16;
1896         u32 vcsize_sel;
1897  
1898         iadev = INPH_IA_DEV(dev);  
1899         spin_lock_init(&iadev->tx_lock);
1900  
1901         IF_INIT(printk("Tx MASK REG: 0x%0x\n", 
1902                                 readw(iadev->seg_reg+SEG_MASK_REG));)  
1903
1904         /* Allocate 4k (boundary aligned) bytes */
1905         dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1906                                         &iadev->tx_dle_dma);  
1907         if (!dle_addr)  {
1908                 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1909                 goto err_out;
1910         }
1911         iadev->tx_dle_q.start = (struct dle*)dle_addr;  
1912         iadev->tx_dle_q.read = iadev->tx_dle_q.start;  
1913         iadev->tx_dle_q.write = iadev->tx_dle_q.start;  
1914         iadev->tx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);  
1915
1916         /* write the upper 20 bits of the start address to tx list address register */  
1917         writel(iadev->tx_dle_dma & 0xfffff000,
1918                iadev->dma + IPHASE5575_TX_LIST_ADDR);  
1919         writew(0xffff, iadev->seg_reg+SEG_MASK_REG);  
1920         writew(0, iadev->seg_reg+MODE_REG_0);  
1921         writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);  
1922         iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1923         iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1924         iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1925   
1926         /*  
1927            Transmit side control memory map  
1928            --------------------------------    
1929          Buffer descr   0x0000 (128 - 4K)  
1930          Commn queues   0x1000  Transmit comp, Packet ready(0x1400)   
1931                                         (512 - 1K) each  
1932                                         TCQ - 4K, PRQ - 5K  
1933          CBR Table      0x1800 (as needed) - 6K  
1934          UBR Table      0x3000 (1K - 4K) - 12K  
1935          UBR Wait queue 0x4000 (1K - 4K) - 16K  
1936          ABR sched      0x5000  and ABR wait queue (1K - 2K) each  
1937                                 ABR Tbl - 20K, ABR Wq - 22K   
1938          extended VC    0x6000 (1K - 8K) - 24K  
1939          VC Table       0x8000 (1K - 32K) - 32K  
1940           
1941         Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl  
1942         and Wait q, which can be allotted later.  
1943         */  
1944      
1945         /* Buffer Descriptor Table Base address */  
1946         writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);  
1947   
1948         /* initialize each entry in the buffer descriptor table */  
1949         buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);  
1950         memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));  
1951         buf_desc_ptr++;  
1952         tx_pkt_start = TX_PACKET_RAM;  
1953         for(i=1; i<=iadev->num_tx_desc; i++)  
1954         {  
1955                 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));  
1956                 buf_desc_ptr->desc_mode = AAL5;  
1957                 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;  
1958                 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;  
1959                 buf_desc_ptr++;           
1960                 tx_pkt_start += iadev->tx_buf_sz;  
1961         }  
1962         iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1963         if (!iadev->tx_buf) {
1964             printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1965             goto err_free_dle;
1966         }
1967         for (i= 0; i< iadev->num_tx_desc; i++)
1968         {
1969             struct cpcs_trailer *cpcs;
1970  
1971             cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1972             if(!cpcs) {                
1973                 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n"); 
1974                 goto err_free_tx_bufs;
1975             }
1976             iadev->tx_buf[i].cpcs = cpcs;
1977             iadev->tx_buf[i].dma_addr = pci_map_single(iadev->pci,
1978                 cpcs, sizeof(*cpcs), PCI_DMA_TODEVICE);
1979         }
1980         iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1981                                    sizeof(struct desc_tbl_t), GFP_KERNEL);
1982         if (!iadev->desc_tbl) {
1983                 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1984                 goto err_free_all_tx_bufs;
1985         }
1986   
1987         /* Communication Queues base address */  
1988         i = TX_COMP_Q * iadev->memSize;
1989         writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);  
1990   
1991         /* Transmit Complete Queue */  
1992         writew(i, iadev->seg_reg+TCQ_ST_ADR);  
1993         writew(i, iadev->seg_reg+TCQ_RD_PTR);  
1994         writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR); 
1995         iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
1996         writew(i+2 * iadev->num_tx_desc * sizeof(u_short), 
1997                                               iadev->seg_reg+TCQ_ED_ADR); 
1998         /* Fill the TCQ with all the free descriptors. */  
1999         tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);  
2000         tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);  
2001         for(i=1; i<=iadev->num_tx_desc; i++)  
2002         {  
2003                 *tcq_start = (u_short)i;  
2004                 tcq_start++;  
2005         }  
2006   
2007         /* Packet Ready Queue */  
2008         i = PKT_RDY_Q * iadev->memSize; 
2009         writew(i, iadev->seg_reg+PRQ_ST_ADR);  
2010         writew(i+2 * iadev->num_tx_desc * sizeof(u_short), 
2011                                               iadev->seg_reg+PRQ_ED_ADR);
2012         writew(i, iadev->seg_reg+PRQ_RD_PTR);  
2013         writew(i, iadev->seg_reg+PRQ_WR_PTR);  
2014          
2015         /* Load local copy of PRQ and TCQ ptrs */
2016         iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2017         iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2018         iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2019
2020         iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2021         iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2022         iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2023
2024         /* Just for safety initializing the queue to have desc 1 always */  
2025         /* Fill the PRQ with all the free descriptors. */  
2026         prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);  
2027         prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);  
2028         for(i=1; i<=iadev->num_tx_desc; i++)  
2029         {  
2030                 *prq_start = (u_short)0;        /* desc 1 in all entries */  
2031                 prq_start++;  
2032         }  
2033         /* CBR Table */  
2034         IF_INIT(printk("Start CBR Init\n");)
2035 #if 1  /* for 1K VC board, CBR_PTR_BASE is 0 */
2036         writew(0,iadev->seg_reg+CBR_PTR_BASE);
2037 #else /* Charlie's logic is wrong ? */
2038         tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2039         IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2040         writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2041 #endif
2042
2043         IF_INIT(printk("value in register = 0x%x\n",
2044                                    readw(iadev->seg_reg+CBR_PTR_BASE));)
2045         tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2046         writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2047         IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2048                                         readw(iadev->seg_reg+CBR_TAB_BEG));)
2049         writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2050         tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2051         writew(tmp16, iadev->seg_reg+CBR_TAB_END);
2052         IF_INIT(printk("iadev->seg_reg = 0x%x CBR_PTR_BASE = 0x%x\n",
2053                (u32)iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
2054         IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2055           readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2056           readw(iadev->seg_reg+CBR_TAB_END+1));)
2057
2058         /* Initialize the CBR Schedualing Table */
2059         memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize, 
2060                                                           0, iadev->num_vc*6); 
2061         iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2062         iadev->CbrEntryPt = 0;
2063         iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2064         iadev->NumEnabledCBR = 0;
2065
2066         /* UBR scheduling Table and wait queue */  
2067         /* initialize all bytes of UBR scheduler table and wait queue to 0   
2068                 - SCHEDSZ is 1K (# of entries).  
2069                 - UBR Table size is 4K  
2070                 - UBR wait queue is 4K  
2071            since the table and wait queues are contiguous, all the bytes   
2072            can be initialized by one memeset.  
2073         */  
2074         
2075         vcsize_sel = 0;
2076         i = 8*1024;
2077         while (i != iadev->num_vc) {
2078           i /= 2;
2079           vcsize_sel++;
2080         }
2081  
2082         i = MAIN_VC_TABLE * iadev->memSize;
2083         writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2084         i =  EXT_VC_TABLE * iadev->memSize;
2085         writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2086         i = UBR_SCHED_TABLE * iadev->memSize;
2087         writew((i & 0xffff) >> 11,  iadev->seg_reg+UBR_SBPTR_BASE);
2088         i = UBR_WAIT_Q * iadev->memSize; 
2089         writew((i >> 7) & 0xffff,  iadev->seg_reg+UBRWQ_BASE);
2090         memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2091                                                        0, iadev->num_vc*8);
2092         /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/  
2093         /* initialize all bytes of ABR scheduler table and wait queue to 0   
2094                 - SCHEDSZ is 1K (# of entries).  
2095                 - ABR Table size is 2K  
2096                 - ABR wait queue is 2K  
2097            since the table and wait queues are contiguous, all the bytes   
2098            can be intialized by one memeset.  
2099         */  
2100         i = ABR_SCHED_TABLE * iadev->memSize;
2101         writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2102         i = ABR_WAIT_Q * iadev->memSize;
2103         writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2104  
2105         i = ABR_SCHED_TABLE*iadev->memSize;
2106         memset((caddr_t)(iadev->seg_ram+i),  0, iadev->num_vc*4);
2107         vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;  
2108         evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;  
2109         iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL); 
2110         if (!iadev->testTable) {
2111            printk("Get freepage  failed\n");
2112            goto err_free_desc_tbl;
2113         }
2114         for(i=0; i<iadev->num_vc; i++)  
2115         {  
2116                 memset((caddr_t)vc, 0, sizeof(*vc));  
2117                 memset((caddr_t)evc, 0, sizeof(*evc));  
2118                 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2119                                                 GFP_KERNEL);
2120                 if (!iadev->testTable[i])
2121                         goto err_free_test_tables;
2122                 iadev->testTable[i]->lastTime = 0;
2123                 iadev->testTable[i]->fract = 0;
2124                 iadev->testTable[i]->vc_status = VC_UBR;
2125                 vc++;  
2126                 evc++;  
2127         }  
2128   
2129         /* Other Initialization */  
2130           
2131         /* Max Rate Register */  
2132         if (iadev->phy_type & FE_25MBIT_PHY) {
2133            writew(RATE25, iadev->seg_reg+MAXRATE);  
2134            writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);  
2135         }
2136         else {
2137            writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2138            writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);  
2139         }
2140         /* Set Idle Header Reigisters to be sure */  
2141         writew(0, iadev->seg_reg+IDLEHEADHI);  
2142         writew(0, iadev->seg_reg+IDLEHEADLO);  
2143   
2144         /* Program ABR UBR Priority Register  as  PRI_ABR_UBR_EQUAL */
2145         writew(0xaa00, iadev->seg_reg+ABRUBR_ARB); 
2146
2147         iadev->close_pending = 0;
2148         init_waitqueue_head(&iadev->close_wait);
2149         init_waitqueue_head(&iadev->timeout_wait);
2150         skb_queue_head_init(&iadev->tx_dma_q);  
2151         ia_init_rtn_q(&iadev->tx_return_q);  
2152
2153         /* RM Cell Protocol ID and Message Type */  
2154         writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);  
2155         skb_queue_head_init (&iadev->tx_backlog);
2156   
2157         /* Mode Register 1 */  
2158         writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);  
2159   
2160         /* Mode Register 0 */  
2161         writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);  
2162   
2163         /* Interrupt Status Register - read to clear */  
2164         readw(iadev->seg_reg+SEG_INTR_STATUS_REG);  
2165   
2166         /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */  
2167         writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2168         writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);  
2169         iadev->tx_pkt_cnt = 0;
2170         iadev->rate_limit = iadev->LineRate / 3;
2171   
2172         return 0;
2173
2174 err_free_test_tables:
2175         while (--i >= 0)
2176                 kfree(iadev->testTable[i]);
2177         kfree(iadev->testTable);
2178 err_free_desc_tbl:
2179         kfree(iadev->desc_tbl);
2180 err_free_all_tx_bufs:
2181         i = iadev->num_tx_desc;
2182 err_free_tx_bufs:
2183         while (--i >= 0) {
2184                 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2185
2186                 pci_unmap_single(iadev->pci, desc->dma_addr,
2187                         sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2188                 kfree(desc->cpcs);
2189         }
2190         kfree(iadev->tx_buf);
2191 err_free_dle:
2192         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2193                             iadev->tx_dle_dma);  
2194 err_out:
2195         return -ENOMEM;
2196 }   
2197    
2198 static irqreturn_t ia_int(int irq, void *dev_id)  
2199 {  
2200    struct atm_dev *dev;  
2201    IADEV *iadev;  
2202    unsigned int status;  
2203    int handled = 0;
2204
2205    dev = dev_id;  
2206    iadev = INPH_IA_DEV(dev);  
2207    while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))  
2208    { 
2209         handled = 1;
2210         IF_EVENT(printk("ia_int: status = 0x%x\n", status);) 
2211         if (status & STAT_REASSINT)  
2212         {  
2213            /* do something */  
2214            IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);) 
2215            rx_intr(dev);  
2216         }  
2217         if (status & STAT_DLERINT)  
2218         {  
2219            /* Clear this bit by writing a 1 to it. */  
2220            *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
2221            rx_dle_intr(dev);  
2222         }  
2223         if (status & STAT_SEGINT)  
2224         {  
2225            /* do something */ 
2226            IF_EVENT(printk("IA: tx_intr \n");) 
2227            tx_intr(dev);  
2228         }  
2229         if (status & STAT_DLETINT)  
2230         {  
2231            *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;  
2232            tx_dle_intr(dev);  
2233         }  
2234         if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))  
2235         {  
2236            if (status & STAT_FEINT) 
2237                IaFrontEndIntr(iadev);
2238         }  
2239    }
2240    return IRQ_RETVAL(handled);
2241 }  
2242           
2243           
2244           
2245 /*----------------------------- entries --------------------------------*/  
2246 static int get_esi(struct atm_dev *dev)  
2247 {  
2248         IADEV *iadev;  
2249         int i;  
2250         u32 mac1;  
2251         u16 mac2;  
2252           
2253         iadev = INPH_IA_DEV(dev);  
2254         mac1 = cpu_to_be32(le32_to_cpu(readl(  
2255                                 iadev->reg+IPHASE5575_MAC1)));  
2256         mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));  
2257         IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)  
2258         for (i=0; i<MAC1_LEN; i++)  
2259                 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));  
2260           
2261         for (i=0; i<MAC2_LEN; i++)  
2262                 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));  
2263         return 0;  
2264 }  
2265           
2266 static int reset_sar(struct atm_dev *dev)  
2267 {  
2268         IADEV *iadev;  
2269         int i, error = 1;  
2270         unsigned int pci[64];  
2271           
2272         iadev = INPH_IA_DEV(dev);  
2273         for(i=0; i<64; i++)  
2274           if ((error = pci_read_config_dword(iadev->pci,  
2275                                 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)  
2276               return error;  
2277         writel(0, iadev->reg+IPHASE5575_EXT_RESET);  
2278         for(i=0; i<64; i++)  
2279           if ((error = pci_write_config_dword(iadev->pci,  
2280                                         i*4, pci[i])) != PCIBIOS_SUCCESSFUL)  
2281             return error;  
2282         udelay(5);  
2283         return 0;  
2284 }  
2285           
2286           
2287 static int __devinit ia_init(struct atm_dev *dev)
2288 {  
2289         IADEV *iadev;  
2290         unsigned long real_base;
2291         void __iomem *base;
2292         unsigned short command;  
2293         unsigned char revision;  
2294         int error, i; 
2295           
2296         /* The device has been identified and registered. Now we read   
2297            necessary configuration info like memory base address,   
2298            interrupt number etc */  
2299           
2300         IF_INIT(printk(">ia_init\n");)  
2301         dev->ci_range.vpi_bits = 0;  
2302         dev->ci_range.vci_bits = NR_VCI_LD;  
2303
2304         iadev = INPH_IA_DEV(dev);  
2305         real_base = pci_resource_start (iadev->pci, 0);
2306         iadev->irq = iadev->pci->irq;
2307                   
2308         if ((error = pci_read_config_word(iadev->pci, PCI_COMMAND,&command))   
2309                     || (error = pci_read_config_byte(iadev->pci,   
2310                                 PCI_REVISION_ID,&revision)))   
2311         {  
2312                 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",  
2313                                 dev->number,error);  
2314                 return -EINVAL;  
2315         }  
2316         IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",  
2317                         dev->number, revision, real_base, iadev->irq);)  
2318           
2319         /* find mapping size of board */  
2320           
2321         iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2322
2323         if (iadev->pci_map_size == 0x100000){
2324           iadev->num_vc = 4096;
2325           dev->ci_range.vci_bits = NR_VCI_4K_LD;  
2326           iadev->memSize = 4;
2327         }
2328         else if (iadev->pci_map_size == 0x40000) {
2329           iadev->num_vc = 1024;
2330           iadev->memSize = 1;
2331         }
2332         else {
2333            printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2334            return -EINVAL;
2335         }
2336         IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)  
2337           
2338         /* enable bus mastering */
2339         pci_set_master(iadev->pci);
2340
2341         /*  
2342          * Delay at least 1us before doing any mem accesses (how 'bout 10?)  
2343          */  
2344         udelay(10);  
2345           
2346         /* mapping the physical address to a virtual address in address space */  
2347         base = ioremap(real_base,iadev->pci_map_size);  /* ioremap is not resolved ??? */  
2348           
2349         if (!base)  
2350         {  
2351                 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",  
2352                             dev->number);  
2353                 return error;  
2354         }  
2355         IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",  
2356                         dev->number, revision, base, iadev->irq);)  
2357           
2358         /* filling the iphase dev structure */  
2359         iadev->mem = iadev->pci_map_size /2;  
2360         iadev->real_base = real_base;  
2361         iadev->base = base;  
2362                   
2363         /* Bus Interface Control Registers */  
2364         iadev->reg = base + REG_BASE;
2365         /* Segmentation Control Registers */  
2366         iadev->seg_reg = base + SEG_BASE;
2367         /* Reassembly Control Registers */  
2368         iadev->reass_reg = base + REASS_BASE;  
2369         /* Front end/ DMA control registers */  
2370         iadev->phy = base + PHY_BASE;  
2371         iadev->dma = base + PHY_BASE;  
2372         /* RAM - Segmentation RAm and Reassembly RAM */  
2373         iadev->ram = base + ACTUAL_RAM_BASE;  
2374         iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;  
2375         iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;  
2376   
2377         /* lets print out the above */  
2378         IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n", 
2379           iadev->reg,iadev->seg_reg,iadev->reass_reg, 
2380           iadev->phy, iadev->ram, iadev->seg_ram, 
2381           iadev->reass_ram);) 
2382           
2383         /* lets try reading the MAC address */  
2384         error = get_esi(dev);  
2385         if (error) {
2386           iounmap(iadev->base);
2387           return error;  
2388         }
2389         printk("IA: ");
2390         for (i=0; i < ESI_LEN; i++)  
2391                 printk("%s%02X",i ? "-" : "",dev->esi[i]);  
2392         printk("\n");  
2393   
2394         /* reset SAR */  
2395         if (reset_sar(dev)) {
2396            iounmap(iadev->base);
2397            printk("IA: reset SAR fail, please try again\n");
2398            return 1;
2399         }
2400         return 0;  
2401 }  
2402
2403 static void ia_update_stats(IADEV *iadev) {
2404     if (!iadev->carrier_detect)
2405         return;
2406     iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2407     iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2408     iadev->drop_rxpkt +=  readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2409     iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2410     iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2411     iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2412     return;
2413 }
2414   
2415 static void ia_led_timer(unsigned long arg) {
2416         unsigned long flags;
2417         static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2418         u_char i;
2419         static u32 ctrl_reg; 
2420         for (i = 0; i < iadev_count; i++) {
2421            if (ia_dev[i]) {
2422               ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2423               if (blinking[i] == 0) {
2424                  blinking[i]++;
2425                  ctrl_reg &= (~CTRL_LED);
2426                  writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2427                  ia_update_stats(ia_dev[i]);
2428               }
2429               else {
2430                  blinking[i] = 0;
2431                  ctrl_reg |= CTRL_LED;
2432                  writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2433                  spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2434                  if (ia_dev[i]->close_pending)  
2435                     wake_up(&ia_dev[i]->close_wait);
2436                  ia_tx_poll(ia_dev[i]);
2437                  spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2438               }
2439            }
2440         }
2441         mod_timer(&ia_timer, jiffies + HZ / 4);
2442         return;
2443 }
2444
2445 static void ia_phy_put(struct atm_dev *dev, unsigned char value,   
2446         unsigned long addr)  
2447 {  
2448         writel(value, INPH_IA_DEV(dev)->phy+addr);  
2449 }  
2450   
2451 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)  
2452 {  
2453         return readl(INPH_IA_DEV(dev)->phy+addr);  
2454 }  
2455
2456 static void ia_free_tx(IADEV *iadev)
2457 {
2458         int i;
2459
2460         kfree(iadev->desc_tbl);
2461         for (i = 0; i < iadev->num_vc; i++)
2462                 kfree(iadev->testTable[i]);
2463         kfree(iadev->testTable);
2464         for (i = 0; i < iadev->num_tx_desc; i++) {
2465                 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2466
2467                 pci_unmap_single(iadev->pci, desc->dma_addr,
2468                         sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2469                 kfree(desc->cpcs);
2470         }
2471         kfree(iadev->tx_buf);
2472         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2473                             iadev->tx_dle_dma);  
2474 }
2475
2476 static void ia_free_rx(IADEV *iadev)
2477 {
2478         kfree(iadev->rx_open);
2479         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2480                           iadev->rx_dle_dma);  
2481 }
2482
2483 static int __devinit ia_start(struct atm_dev *dev)
2484 {  
2485         IADEV *iadev;  
2486         int error;  
2487         unsigned char phy;  
2488         u32 ctrl_reg;  
2489         IF_EVENT(printk(">ia_start\n");)  
2490         iadev = INPH_IA_DEV(dev);  
2491         if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
2492                 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",  
2493                     dev->number, iadev->irq);  
2494                 error = -EAGAIN;
2495                 goto err_out;
2496         }  
2497         /* @@@ should release IRQ on error */  
2498         /* enabling memory + master */  
2499         if ((error = pci_write_config_word(iadev->pci,   
2500                                 PCI_COMMAND,   
2501                                 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))   
2502         {  
2503                 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"  
2504                     "master (0x%x)\n",dev->number, error);  
2505                 error = -EIO;  
2506                 goto err_free_irq;
2507         }  
2508         udelay(10);  
2509   
2510         /* Maybe we should reset the front end, initialize Bus Interface Control   
2511                 Registers and see. */  
2512   
2513         IF_INIT(printk("Bus ctrl reg: %08x\n", 
2514                             readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)  
2515         ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);  
2516         ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))  
2517                         | CTRL_B8  
2518                         | CTRL_B16  
2519                         | CTRL_B32  
2520                         | CTRL_B48  
2521                         | CTRL_B64  
2522                         | CTRL_B128  
2523                         | CTRL_ERRMASK  
2524                         | CTRL_DLETMASK         /* shud be removed l8r */  
2525                         | CTRL_DLERMASK  
2526                         | CTRL_SEGMASK  
2527                         | CTRL_REASSMASK          
2528                         | CTRL_FEMASK  
2529                         | CTRL_CSPREEMPT;  
2530   
2531        writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);   
2532   
2533         IF_INIT(printk("Bus ctrl reg after initializing: %08x\n", 
2534                            readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));  
2535            printk("Bus status reg after init: %08x\n", 
2536                             readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)  
2537     
2538         ia_hw_type(iadev); 
2539         error = tx_init(dev);  
2540         if (error)
2541                 goto err_free_irq;
2542         error = rx_init(dev);  
2543         if (error)
2544                 goto err_free_tx;
2545   
2546         ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);  
2547         writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);   
2548         IF_INIT(printk("Bus ctrl reg after initializing: %08x\n", 
2549                                readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)  
2550         phy = 0; /* resolve compiler complaint */
2551         IF_INIT ( 
2552         if ((phy=ia_phy_get(dev,0)) == 0x30)  
2553                 printk("IA: pm5346,rev.%d\n",phy&0x0f);  
2554         else  
2555                 printk("IA: utopia,rev.%0x\n",phy);) 
2556
2557         if (iadev->phy_type &  FE_25MBIT_PHY)
2558            ia_mb25_init(iadev);
2559         else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2560            ia_suni_pm7345_init(iadev);
2561         else {
2562                 error = suni_init(dev);
2563                 if (error)
2564                         goto err_free_rx;
2565                 /* 
2566                  * Enable interrupt on loss of signal
2567                  * SUNI_RSOP_CIE - 0x10
2568                  * SUNI_RSOP_CIE_LOSE - 0x04
2569                  */
2570                 ia_phy_put(dev, ia_phy_get(dev, 0x10) | 0x04, 0x10);
2571 #ifndef MODULE
2572                 error = dev->phy->start(dev);
2573                 if (error)
2574                         goto err_free_rx;
2575 #endif
2576                 /* Get iadev->carrier_detect status */
2577                 IaFrontEndIntr(iadev);
2578         }
2579         return 0;
2580
2581 err_free_rx:
2582         ia_free_rx(iadev);
2583 err_free_tx:
2584         ia_free_tx(iadev);
2585 err_free_irq:
2586         free_irq(iadev->irq, dev);  
2587 err_out:
2588         return error;
2589 }  
2590   
2591 static void ia_close(struct atm_vcc *vcc)  
2592 {
2593         DEFINE_WAIT(wait);
2594         u16 *vc_table;
2595         IADEV *iadev;
2596         struct ia_vcc *ia_vcc;
2597         struct sk_buff *skb = NULL;
2598         struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2599         unsigned long closetime, flags;
2600
2601         iadev = INPH_IA_DEV(vcc->dev);
2602         ia_vcc = INPH_IA_VCC(vcc);
2603         if (!ia_vcc) return;  
2604
2605         IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d  vci = %d\n", 
2606                                               ia_vcc->vc_desc_cnt,vcc->vci);)
2607         clear_bit(ATM_VF_READY,&vcc->flags);
2608         skb_queue_head_init (&tmp_tx_backlog);
2609         skb_queue_head_init (&tmp_vcc_backlog); 
2610         if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2611            iadev->close_pending++;
2612            prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2613            schedule_timeout(50);
2614            finish_wait(&iadev->timeout_wait, &wait);
2615            spin_lock_irqsave(&iadev->tx_lock, flags); 
2616            while((skb = skb_dequeue(&iadev->tx_backlog))) {
2617               if (ATM_SKB(skb)->vcc == vcc){ 
2618                  if (vcc->pop) vcc->pop(vcc, skb);
2619                  else dev_kfree_skb_any(skb);
2620               }
2621               else 
2622                  skb_queue_tail(&tmp_tx_backlog, skb);
2623            } 
2624            while((skb = skb_dequeue(&tmp_tx_backlog))) 
2625              skb_queue_tail(&iadev->tx_backlog, skb);
2626            IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);) 
2627            closetime = 300000 / ia_vcc->pcr;
2628            if (closetime == 0)
2629               closetime = 1;
2630            spin_unlock_irqrestore(&iadev->tx_lock, flags);
2631            wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2632            spin_lock_irqsave(&iadev->tx_lock, flags);
2633            iadev->close_pending--;
2634            iadev->testTable[vcc->vci]->lastTime = 0;
2635            iadev->testTable[vcc->vci]->fract = 0; 
2636            iadev->testTable[vcc->vci]->vc_status = VC_UBR; 
2637            if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2638               if (vcc->qos.txtp.min_pcr > 0)
2639                  iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2640            }
2641            if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2642               ia_vcc = INPH_IA_VCC(vcc); 
2643               iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2644               ia_cbrVc_close (vcc);
2645            }
2646            spin_unlock_irqrestore(&iadev->tx_lock, flags);
2647         }
2648         
2649         if (vcc->qos.rxtp.traffic_class != ATM_NONE) {   
2650            // reset reass table
2651            vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2652            vc_table += vcc->vci; 
2653            *vc_table = NO_AAL5_PKT;
2654            // reset vc table
2655            vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2656            vc_table += vcc->vci;
2657            *vc_table = (vcc->vci << 6) | 15;
2658            if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2659               struct abr_vc_table __iomem *abr_vc_table = 
2660                                 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2661               abr_vc_table +=  vcc->vci;
2662               abr_vc_table->rdf = 0x0003;
2663               abr_vc_table->air = 0x5eb1;
2664            }                                 
2665            // Drain the packets
2666            rx_dle_intr(vcc->dev); 
2667            iadev->rx_open[vcc->vci] = NULL;
2668         }
2669         kfree(INPH_IA_VCC(vcc));  
2670         ia_vcc = NULL;
2671         vcc->dev_data = NULL;
2672         clear_bit(ATM_VF_ADDR,&vcc->flags);
2673         return;        
2674 }  
2675   
2676 static int ia_open(struct atm_vcc *vcc)
2677 {  
2678         IADEV *iadev;  
2679         struct ia_vcc *ia_vcc;  
2680         int error;  
2681         if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))  
2682         {  
2683                 IF_EVENT(printk("ia: not partially allocated resources\n");)  
2684                 vcc->dev_data = NULL;
2685         }  
2686         iadev = INPH_IA_DEV(vcc->dev);  
2687         if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)  
2688         {  
2689                 IF_EVENT(printk("iphase open: unspec part\n");)  
2690                 set_bit(ATM_VF_ADDR,&vcc->flags);
2691         }  
2692         if (vcc->qos.aal != ATM_AAL5)  
2693                 return -EINVAL;  
2694         IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n", 
2695                                  vcc->dev->number, vcc->vpi, vcc->vci);)  
2696   
2697         /* Device dependent initialization */  
2698         ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);  
2699         if (!ia_vcc) return -ENOMEM;  
2700         vcc->dev_data = ia_vcc;
2701   
2702         if ((error = open_rx(vcc)))  
2703         {  
2704                 IF_EVENT(printk("iadev: error in open_rx, closing\n");)  
2705                 ia_close(vcc);  
2706                 return error;  
2707         }  
2708   
2709         if ((error = open_tx(vcc)))  
2710         {  
2711                 IF_EVENT(printk("iadev: error in open_tx, closing\n");)  
2712                 ia_close(vcc);  
2713                 return error;  
2714         }  
2715   
2716         set_bit(ATM_VF_READY,&vcc->flags);
2717
2718 #if 0
2719         {
2720            static u8 first = 1; 
2721            if (first) {
2722               ia_timer.expires = jiffies + 3*HZ;
2723               add_timer(&ia_timer);
2724               first = 0;
2725            }           
2726         }
2727 #endif
2728         IF_EVENT(printk("ia open returning\n");)  
2729         return 0;  
2730 }  
2731   
2732 static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)  
2733 {  
2734         IF_EVENT(printk(">ia_change_qos\n");)  
2735         return 0;  
2736 }  
2737   
2738 static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)  
2739 {  
2740    IA_CMDBUF ia_cmds;
2741    IADEV *iadev;
2742    int i, board;
2743    u16 __user *tmps;
2744    IF_EVENT(printk(">ia_ioctl\n");)  
2745    if (cmd != IA_CMD) {
2746       if (!dev->phy->ioctl) return -EINVAL;
2747       return dev->phy->ioctl(dev,cmd,arg);
2748    }
2749    if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT; 
2750    board = ia_cmds.status;
2751    if ((board < 0) || (board > iadev_count))
2752          board = 0;    
2753    iadev = ia_dev[board];
2754    switch (ia_cmds.cmd) {
2755    case MEMDUMP:
2756    {
2757         switch (ia_cmds.sub_cmd) {
2758           case MEMDUMP_DEV:     
2759              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2760              if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2761                 return -EFAULT;
2762              ia_cmds.status = 0;
2763              break;
2764           case MEMDUMP_SEGREG:
2765              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2766              tmps = (u16 __user *)ia_cmds.buf;
2767              for(i=0; i<0x80; i+=2, tmps++)
2768                 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2769              ia_cmds.status = 0;
2770              ia_cmds.len = 0x80;
2771              break;
2772           case MEMDUMP_REASSREG:
2773              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2774              tmps = (u16 __user *)ia_cmds.buf;
2775              for(i=0; i<0x80; i+=2, tmps++)
2776                 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2777              ia_cmds.status = 0;
2778              ia_cmds.len = 0x80;
2779              break;
2780           case MEMDUMP_FFL:
2781           {  
2782              ia_regs_t       *regs_local;
2783              ffredn_t        *ffL;
2784              rfredn_t        *rfL;
2785                      
2786              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2787              regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2788              if (!regs_local) return -ENOMEM;
2789              ffL = &regs_local->ffredn;
2790              rfL = &regs_local->rfredn;
2791              /* Copy real rfred registers into the local copy */
2792              for (i=0; i<(sizeof (rfredn_t))/4; i++)
2793                 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2794                 /* Copy real ffred registers into the local copy */
2795              for (i=0; i<(sizeof (ffredn_t))/4; i++)
2796                 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2797
2798              if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2799                 kfree(regs_local);
2800                 return -EFAULT;
2801              }
2802              kfree(regs_local);
2803              printk("Board %d registers dumped\n", board);
2804              ia_cmds.status = 0;                  
2805          }      
2806              break;        
2807          case READ_REG:
2808          {  
2809              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2810              desc_dbg(iadev); 
2811              ia_cmds.status = 0; 
2812          }
2813              break;
2814          case 0x6:
2815          {  
2816              ia_cmds.status = 0; 
2817              printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2818              printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2819          }
2820              break;
2821          case 0x8:
2822          {
2823              struct k_sonet_stats *stats;
2824              stats = &PRIV(_ia_dev[board])->sonet_stats;
2825              printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2826              printk("line_bip   : %d\n", atomic_read(&stats->line_bip));
2827              printk("path_bip   : %d\n", atomic_read(&stats->path_bip));
2828              printk("line_febe  : %d\n", atomic_read(&stats->line_febe));
2829              printk("path_febe  : %d\n", atomic_read(&stats->path_febe));
2830              printk("corr_hcs   : %d\n", atomic_read(&stats->corr_hcs));
2831              printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2832              printk("tx_cells   : %d\n", atomic_read(&stats->tx_cells));
2833              printk("rx_cells   : %d\n", atomic_read(&stats->rx_cells));
2834          }
2835             ia_cmds.status = 0;
2836             break;
2837          case 0x9:
2838             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2839             for (i = 1; i <= iadev->num_rx_desc; i++)
2840                free_desc(_ia_dev[board], i);
2841             writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD), 
2842                                             iadev->reass_reg+REASS_MASK_REG);
2843             iadev->rxing = 1;
2844             
2845             ia_cmds.status = 0;
2846             break;
2847
2848          case 0xb:
2849             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2850             IaFrontEndIntr(iadev);
2851             break;
2852          case 0xa:
2853             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2854          {  
2855              ia_cmds.status = 0; 
2856              IADebugFlag = ia_cmds.maddr;
2857              printk("New debug option loaded\n");
2858          }
2859              break;
2860          default:
2861              ia_cmds.status = 0;
2862              break;
2863       } 
2864    }
2865       break;
2866    default:
2867       break;
2868
2869    }    
2870    return 0;  
2871 }  
2872   
2873 static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,   
2874         void __user *optval, int optlen)  
2875 {  
2876         IF_EVENT(printk(">ia_getsockopt\n");)  
2877         return -EINVAL;  
2878 }  
2879   
2880 static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,   
2881         void __user *optval, int optlen)  
2882 {  
2883         IF_EVENT(printk(">ia_setsockopt\n");)  
2884         return -EINVAL;  
2885 }  
2886   
2887 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2888         IADEV *iadev;
2889         struct dle *wr_ptr;
2890         struct tx_buf_desc __iomem *buf_desc_ptr;
2891         int desc;
2892         int comp_code;
2893         int total_len;
2894         struct cpcs_trailer *trailer;
2895         struct ia_vcc *iavcc;
2896
2897         iadev = INPH_IA_DEV(vcc->dev);  
2898         iavcc = INPH_IA_VCC(vcc);
2899         if (!iavcc->txing) {
2900            printk("discard packet on closed VC\n");
2901            if (vcc->pop)
2902                 vcc->pop(vcc, skb);
2903            else
2904                 dev_kfree_skb_any(skb);
2905            return 0;
2906         }
2907
2908         if (skb->len > iadev->tx_buf_sz - 8) {
2909            printk("Transmit size over tx buffer size\n");
2910            if (vcc->pop)
2911                  vcc->pop(vcc, skb);
2912            else
2913                  dev_kfree_skb_any(skb);
2914           return 0;
2915         }
2916         if ((u32)skb->data & 3) {
2917            printk("Misaligned SKB\n");
2918            if (vcc->pop)
2919                  vcc->pop(vcc, skb);
2920            else
2921                  dev_kfree_skb_any(skb);
2922            return 0;
2923         }       
2924         /* Get a descriptor number from our free descriptor queue  
2925            We get the descr number from the TCQ now, since I am using  
2926            the TCQ as a free buffer queue. Initially TCQ will be   
2927            initialized with all the descriptors and is hence, full.  
2928         */
2929         desc = get_desc (iadev, iavcc);
2930         if (desc == 0xffff) 
2931             return 1;
2932         comp_code = desc >> 13;  
2933         desc &= 0x1fff;  
2934   
2935         if ((desc == 0) || (desc > iadev->num_tx_desc))  
2936         {  
2937                 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) 
2938                 atomic_inc(&vcc->stats->tx);
2939                 if (vcc->pop)   
2940                     vcc->pop(vcc, skb);   
2941                 else  
2942                     dev_kfree_skb_any(skb);
2943                 return 0;   /* return SUCCESS */
2944         }  
2945   
2946         if (comp_code)  
2947         {  
2948             IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n", 
2949                                                             desc, comp_code);)  
2950         }  
2951        
2952         /* remember the desc and vcc mapping */
2953         iavcc->vc_desc_cnt++;
2954         iadev->desc_tbl[desc-1].iavcc = iavcc;
2955         iadev->desc_tbl[desc-1].txskb = skb;
2956         IA_SKB_STATE(skb) = 0;
2957
2958         iadev->ffL.tcq_rd += 2;
2959         if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2960                 iadev->ffL.tcq_rd  = iadev->ffL.tcq_st;
2961         writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2962   
2963         /* Put the descriptor number in the packet ready queue  
2964                 and put the updated write pointer in the DLE field   
2965         */   
2966         *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc; 
2967
2968         iadev->ffL.prq_wr += 2;
2969         if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2970                 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2971           
2972         /* Figure out the exact length of the packet and padding required to 
2973            make it  aligned on a 48 byte boundary.  */
2974         total_len = skb->len + sizeof(struct cpcs_trailer);  
2975         total_len = ((total_len + 47) / 48) * 48;
2976         IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)  
2977  
2978         /* Put the packet in a tx buffer */   
2979         trailer = iadev->tx_buf[desc-1].cpcs;
2980         IF_TX(printk("Sent: skb = 0x%x skb->data: 0x%x len: %d, desc: %d\n",
2981                   (u32)skb, (u32)skb->data, skb->len, desc);)
2982         trailer->control = 0; 
2983         /*big endian*/ 
2984         trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2985         trailer->crc32 = 0;     /* not needed - dummy bytes */  
2986
2987         /* Display the packet */  
2988         IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n", 
2989                                                         skb->len, tcnter++);  
2990         xdump(skb->data, skb->len, "TX: ");
2991         printk("\n");)
2992
2993         /* Build the buffer descriptor */  
2994         buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
2995         buf_desc_ptr += desc;   /* points to the corresponding entry */  
2996         buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;   
2997         /* Huh ? p.115 of users guide describes this as a read-only register */
2998         writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2999         buf_desc_ptr->vc_index = vcc->vci;
3000         buf_desc_ptr->bytes = total_len;  
3001
3002         if (vcc->qos.txtp.traffic_class == ATM_ABR)  
3003            clear_lockup (vcc, iadev);
3004
3005         /* Build the DLE structure */  
3006         wr_ptr = iadev->tx_dle_q.write;  
3007         memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));  
3008         wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
3009                 skb->len, PCI_DMA_TODEVICE);
3010         wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) | 
3011                                                   buf_desc_ptr->buf_start_lo;  
3012         /* wr_ptr->bytes = swap(total_len);     didn't seem to affect ?? */  
3013         wr_ptr->bytes = skb->len;  
3014
3015         /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3016         if ((wr_ptr->bytes >> 2) == 0xb)
3017            wr_ptr->bytes = 0x30;
3018
3019         wr_ptr->mode = TX_DLE_PSI; 
3020         wr_ptr->prq_wr_ptr_data = 0;
3021   
3022         /* end is not to be used for the DLE q */  
3023         if (++wr_ptr == iadev->tx_dle_q.end)  
3024                 wr_ptr = iadev->tx_dle_q.start;  
3025         
3026         /* Build trailer dle */
3027         wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3028         wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) | 
3029           buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3030
3031         wr_ptr->bytes = sizeof(struct cpcs_trailer);
3032         wr_ptr->mode = DMA_INT_ENABLE; 
3033         wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3034         
3035         /* end is not to be used for the DLE q */
3036         if (++wr_ptr == iadev->tx_dle_q.end)  
3037                 wr_ptr = iadev->tx_dle_q.start;
3038
3039         iadev->tx_dle_q.write = wr_ptr;  
3040         ATM_DESC(skb) = vcc->vci;
3041         skb_queue_tail(&iadev->tx_dma_q, skb);
3042
3043         atomic_inc(&vcc->stats->tx);
3044         iadev->tx_pkt_cnt++;
3045         /* Increment transaction counter */  
3046         writel(2, iadev->dma+IPHASE5575_TX_COUNTER);  
3047         
3048 #if 0        
3049         /* add flow control logic */ 
3050         if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3051           if (iavcc->vc_desc_cnt > 10) {
3052              vcc->tx_quota =  vcc->tx_quota * 3 / 4;
3053             printk("Tx1:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3054               iavcc->flow_inc = -1;
3055               iavcc->saved_tx_quota = vcc->tx_quota;
3056            } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3057              // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3058              printk("Tx2:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota ); 
3059               iavcc->flow_inc = 0;
3060            }
3061         }
3062 #endif
3063         IF_TX(printk("ia send done\n");)  
3064         return 0;  
3065 }  
3066
3067 static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3068 {
3069         IADEV *iadev; 
3070         struct ia_vcc *iavcc;
3071         unsigned long flags;
3072
3073         iadev = INPH_IA_DEV(vcc->dev);
3074         iavcc = INPH_IA_VCC(vcc); 
3075         if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3076         {
3077             if (!skb)
3078                 printk(KERN_CRIT "null skb in ia_send\n");
3079             else dev_kfree_skb_any(skb);
3080             return -EINVAL;
3081         }                         
3082         spin_lock_irqsave(&iadev->tx_lock, flags); 
3083         if (!test_bit(ATM_VF_READY,&vcc->flags)){ 
3084             dev_kfree_skb_any(skb);
3085             spin_unlock_irqrestore(&iadev->tx_lock, flags);
3086             return -EINVAL; 
3087         }
3088         ATM_SKB(skb)->vcc = vcc;
3089  
3090         if (skb_peek(&iadev->tx_backlog)) {
3091            skb_queue_tail(&iadev->tx_backlog, skb);
3092         }
3093         else {
3094            if (ia_pkt_tx (vcc, skb)) {
3095               skb_queue_tail(&iadev->tx_backlog, skb);
3096            }
3097         }
3098         spin_unlock_irqrestore(&iadev->tx_lock, flags);
3099         return 0;
3100
3101 }
3102
3103 static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3104
3105   int   left = *pos, n;   
3106   char  *tmpPtr;
3107   IADEV *iadev = INPH_IA_DEV(dev);
3108   if(!left--) {
3109      if (iadev->phy_type == FE_25MBIT_PHY) {
3110        n = sprintf(page, "  Board Type         :  Iphase5525-1KVC-128K\n");
3111        return n;
3112      }
3113      if (iadev->phy_type == FE_DS3_PHY)
3114         n = sprintf(page, "  Board Type         :  Iphase-ATM-DS3");
3115      else if (iadev->phy_type == FE_E3_PHY)
3116         n = sprintf(page, "  Board Type         :  Iphase-ATM-E3");
3117      else if (iadev->phy_type == FE_UTP_OPTION)
3118          n = sprintf(page, "  Board Type         :  Iphase-ATM-UTP155"); 
3119      else
3120         n = sprintf(page, "  Board Type         :  Iphase-ATM-OC3");
3121      tmpPtr = page + n;
3122      if (iadev->pci_map_size == 0x40000)
3123         n += sprintf(tmpPtr, "-1KVC-");
3124      else
3125         n += sprintf(tmpPtr, "-4KVC-");  
3126      tmpPtr = page + n; 
3127      if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3128         n += sprintf(tmpPtr, "1M  \n");
3129      else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3130         n += sprintf(tmpPtr, "512K\n");
3131      else
3132        n += sprintf(tmpPtr, "128K\n");
3133      return n;
3134   }
3135   if (!left) {
3136      return  sprintf(page, "  Number of Tx Buffer:  %u\n"
3137                            "  Size of Tx Buffer  :  %u\n"
3138                            "  Number of Rx Buffer:  %u\n"
3139                            "  Size of Rx Buffer  :  %u\n"
3140                            "  Packets Receiverd  :  %u\n"
3141                            "  Packets Transmitted:  %u\n"
3142                            "  Cells Received     :  %u\n"
3143                            "  Cells Transmitted  :  %u\n"
3144                            "  Board Dropped Cells:  %u\n"
3145                            "  Board Dropped Pkts :  %u\n",
3146                            iadev->num_tx_desc,  iadev->tx_buf_sz,
3147                            iadev->num_rx_desc,  iadev->rx_buf_sz,
3148                            iadev->rx_pkt_cnt,   iadev->tx_pkt_cnt,
3149                            iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3150                            iadev->drop_rxcell, iadev->drop_rxpkt);                        
3151   }
3152   return 0;
3153 }
3154   
3155 static const struct atmdev_ops ops = {  
3156         .open           = ia_open,  
3157         .close          = ia_close,  
3158         .ioctl          = ia_ioctl,  
3159         .getsockopt     = ia_getsockopt,  
3160         .setsockopt     = ia_setsockopt,  
3161         .send           = ia_send,  
3162         .phy_put        = ia_phy_put,  
3163         .phy_get        = ia_phy_get,  
3164         .change_qos     = ia_change_qos,  
3165         .proc_read      = ia_proc_read,
3166         .owner          = THIS_MODULE,
3167 };  
3168           
3169 static int __devinit ia_init_one(struct pci_dev *pdev,
3170                                  const struct pci_device_id *ent)
3171 {  
3172         struct atm_dev *dev;  
3173         IADEV *iadev;  
3174         unsigned long flags;
3175         int ret;
3176
3177         iadev = kmalloc(sizeof(*iadev), GFP_KERNEL); 
3178         if (!iadev) {
3179                 ret = -ENOMEM;
3180                 goto err_out;
3181         }
3182         memset(iadev, 0, sizeof(*iadev));
3183         iadev->pci = pdev;
3184
3185         IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3186                 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3187         if (pci_enable_device(pdev)) {
3188                 ret = -ENODEV;
3189                 goto err_out_free_iadev;
3190         }
3191         dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
3192         if (!dev) {
3193                 ret = -ENOMEM;
3194                 goto err_out_disable_dev;
3195         }
3196         dev->dev_data = iadev;
3197         IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
3198         IF_INIT(printk("dev_id = 0x%x iadev->LineRate = %d \n", (u32)dev,
3199                 iadev->LineRate);)
3200
3201         ia_dev[iadev_count] = iadev;
3202         _ia_dev[iadev_count] = dev;
3203         iadev_count++;
3204         spin_lock_init(&iadev->misc_lock);
3205         /* First fixes first. I don't want to think about this now. */
3206         spin_lock_irqsave(&iadev->misc_lock, flags); 
3207         if (ia_init(dev) || ia_start(dev)) {  
3208                 IF_INIT(printk("IA register failed!\n");)
3209                 iadev_count--;
3210                 ia_dev[iadev_count] = NULL;
3211                 _ia_dev[iadev_count] = NULL;
3212                 spin_unlock_irqrestore(&iadev->misc_lock, flags); 
3213                 ret = -EINVAL;
3214                 goto err_out_deregister_dev;
3215         }
3216         spin_unlock_irqrestore(&iadev->misc_lock, flags); 
3217         IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3218
3219         iadev->next_board = ia_boards;  
3220         ia_boards = dev;  
3221
3222         pci_set_drvdata(pdev, dev);
3223
3224         return 0;
3225
3226 err_out_deregister_dev:
3227         atm_dev_deregister(dev);  
3228 err_out_disable_dev:
3229         pci_disable_device(pdev);
3230 err_out_free_iadev:
3231         kfree(iadev);
3232 err_out:
3233         return ret;
3234 }
3235
3236 static void __devexit ia_remove_one(struct pci_dev *pdev)
3237 {
3238         struct atm_dev *dev = pci_get_drvdata(pdev);
3239         IADEV *iadev = INPH_IA_DEV(dev);
3240
3241         ia_phy_put(dev, ia_phy_get(dev,0x10) & ~(0x4), 0x10); 
3242         udelay(1);
3243
3244         /* De-register device */  
3245         free_irq(iadev->irq, dev);
3246         iadev_count--;
3247         ia_dev[iadev_count] = NULL;
3248         _ia_dev[iadev_count] = NULL;
3249         IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3250         atm_dev_deregister(dev);
3251
3252         iounmap(iadev->base);  
3253         pci_disable_device(pdev);
3254
3255         ia_free_rx(iadev);
3256         ia_free_tx(iadev);
3257
3258         kfree(iadev);
3259 }
3260
3261 static struct pci_device_id ia_pci_tbl[] = {
3262         { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3263         { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3264         { 0,}
3265 };
3266 MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3267
3268 static struct pci_driver ia_driver = {
3269         .name =         DEV_LABEL,
3270         .id_table =     ia_pci_tbl,
3271         .probe =        ia_init_one,
3272         .remove =       __devexit_p(ia_remove_one),
3273 };
3274
3275 static int __init ia_module_init(void)
3276 {
3277         int ret;
3278
3279         ret = pci_register_driver(&ia_driver);
3280         if (ret >= 0) {
3281                 ia_timer.expires = jiffies + 3*HZ;
3282                 add_timer(&ia_timer); 
3283         } else
3284                 printk(KERN_ERR DEV_LABEL ": no adapter found\n");  
3285         return ret;
3286 }
3287
3288 static void __exit ia_module_exit(void)
3289 {
3290         pci_unregister_driver(&ia_driver);
3291
3292         del_timer(&ia_timer);
3293 }
3294
3295 module_init(ia_module_init);
3296 module_exit(ia_module_exit);