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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/interrupt.h>
57#include <linux/wait.h>
58#include <linux/slab.h>
59#include <asm/system.h>
60#include <asm/io.h>
61#include <linux/atomic.h>
62#include <asm/uaccess.h>
63#include <asm/string.h>
64#include <asm/byteorder.h>
65#include <linux/vmalloc.h>
66#include <linux/jiffies.h>
67#include "iphase.h"
68#include "suni.h"
69#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
70
71#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
72
73static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
74static void desc_dbg(IADEV *iadev);
75
76static IADEV *ia_dev[8];
77static struct atm_dev *_ia_dev[8];
78static int iadev_count;
79static void ia_led_timer(unsigned long arg);
80static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
81static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
82static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
83static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
84 |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
85
86module_param(IA_TX_BUF, int, 0);
87module_param(IA_TX_BUF_SZ, int, 0);
88module_param(IA_RX_BUF, int, 0);
89module_param(IA_RX_BUF_SZ, int, 0);
90module_param(IADebugFlag, uint, 0644);
91
92MODULE_LICENSE("GPL");
93
94/**************************** IA_LIB **********************************/
95
96static void ia_init_rtn_q (IARTN_Q *que)
97{
98 que->next = NULL;
99 que->tail = NULL;
100}
101
102static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
103{
104 data->next = NULL;
105 if (que->next == NULL)
106 que->next = que->tail = data;
107 else {
108 data->next = que->next;
109 que->next = data;
110 }
111 return;
112}
113
114static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
115 IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
116 if (!entry) return -1;
117 entry->data = data;
118 entry->next = NULL;
119 if (que->next == NULL)
120 que->next = que->tail = entry;
121 else {
122 que->tail->next = entry;
123 que->tail = que->tail->next;
124 }
125 return 1;
126}
127
128static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
129 IARTN_Q *tmpdata;
130 if (que->next == NULL)
131 return NULL;
132 tmpdata = que->next;
133 if ( que->next == que->tail)
134 que->next = que->tail = NULL;
135 else
136 que->next = que->next->next;
137 return tmpdata;
138}
139
140static void ia_hack_tcq(IADEV *dev) {
141
142 u_short desc1;
143 u_short tcq_wr;
144 struct ia_vcc *iavcc_r = NULL;
145
146 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
147 while (dev->host_tcq_wr != tcq_wr) {
148 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
149 if (!desc1) ;
150 else if (!dev->desc_tbl[desc1 -1].timestamp) {
151 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
152 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
153 }
154 else if (dev->desc_tbl[desc1 -1].timestamp) {
155 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
156 printk("IA: Fatal err in get_desc\n");
157 continue;
158 }
159 iavcc_r->vc_desc_cnt--;
160 dev->desc_tbl[desc1 -1].timestamp = 0;
161 IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n",
162 dev->desc_tbl[desc1 -1].txskb, desc1);)
163 if (iavcc_r->pcr < dev->rate_limit) {
164 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
165 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
166 printk("ia_hack_tcq: No memory available\n");
167 }
168 dev->desc_tbl[desc1 -1].iavcc = NULL;
169 dev->desc_tbl[desc1 -1].txskb = NULL;
170 }
171 dev->host_tcq_wr += 2;
172 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
173 dev->host_tcq_wr = dev->ffL.tcq_st;
174 }
175} /* ia_hack_tcq */
176
177static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
178 u_short desc_num, i;
179 struct sk_buff *skb;
180 struct ia_vcc *iavcc_r = NULL;
181 unsigned long delta;
182 static unsigned long timer = 0;
183 int ltimeout;
184
185 ia_hack_tcq (dev);
186 if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
187 timer = jiffies;
188 i=0;
189 while (i < dev->num_tx_desc) {
190 if (!dev->desc_tbl[i].timestamp) {
191 i++;
192 continue;
193 }
194 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
195 delta = jiffies - dev->desc_tbl[i].timestamp;
196 if (delta >= ltimeout) {
197 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
198 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
199 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
200 else
201 dev->ffL.tcq_rd -= 2;
202 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
203 if (!(skb = dev->desc_tbl[i].txskb) ||
204 !(iavcc_r = dev->desc_tbl[i].iavcc))
205 printk("Fatal err, desc table vcc or skb is NULL\n");
206 else
207 iavcc_r->vc_desc_cnt--;
208 dev->desc_tbl[i].timestamp = 0;
209 dev->desc_tbl[i].iavcc = NULL;
210 dev->desc_tbl[i].txskb = NULL;
211 }
212 i++;
213 } /* while */
214 }
215 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
216 return 0xFFFF;
217
218 /* Get the next available descriptor number from TCQ */
219 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
220
221 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
222 dev->ffL.tcq_rd += 2;
223 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
224 dev->ffL.tcq_rd = dev->ffL.tcq_st;
225 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
226 return 0xFFFF;
227 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
228 }
229
230 /* get system time */
231 dev->desc_tbl[desc_num -1].timestamp = jiffies;
232 return desc_num;
233}
234
235static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
236 u_char foundLockUp;
237 vcstatus_t *vcstatus;
238 u_short *shd_tbl;
239 u_short tempCellSlot, tempFract;
240 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
241 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
242 u_int i;
243
244 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
245 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
246 vcstatus->cnt++;
247 foundLockUp = 0;
248 if( vcstatus->cnt == 0x05 ) {
249 abr_vc += vcc->vci;
250 eabr_vc += vcc->vci;
251 if( eabr_vc->last_desc ) {
252 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
253 /* Wait for 10 Micro sec */
254 udelay(10);
255 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
256 foundLockUp = 1;
257 }
258 else {
259 tempCellSlot = abr_vc->last_cell_slot;
260 tempFract = abr_vc->fraction;
261 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
262 && (tempFract == dev->testTable[vcc->vci]->fract))
263 foundLockUp = 1;
264 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
265 dev->testTable[vcc->vci]->fract = tempFract;
266 }
267 } /* last descriptor */
268 vcstatus->cnt = 0;
269 } /* vcstatus->cnt */
270
271 if (foundLockUp) {
272 IF_ABR(printk("LOCK UP found\n");)
273 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
274 /* Wait for 10 Micro sec */
275 udelay(10);
276 abr_vc->status &= 0xFFF8;
277 abr_vc->status |= 0x0001; /* state is idle */
278 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
279 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
280 if (i < dev->num_vc)
281 shd_tbl[i] = vcc->vci;
282 else
283 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
284 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
285 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
286 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
287 vcstatus->cnt = 0;
288 } /* foundLockUp */
289
290 } /* if an ABR VC */
291
292
293}
294
295/*
296** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
297**
298** +----+----+------------------+-------------------------------+
299** | R | NZ | 5-bit exponent | 9-bit mantissa |
300** +----+----+------------------+-------------------------------+
301**
302** R = reserved (written as 0)
303** NZ = 0 if 0 cells/sec; 1 otherwise
304**
305** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
306*/
307static u16
308cellrate_to_float(u32 cr)
309{
310
311#define NZ 0x4000
312#define M_BITS 9 /* Number of bits in mantissa */
313#define E_BITS 5 /* Number of bits in exponent */
314#define M_MASK 0x1ff
315#define E_MASK 0x1f
316 u16 flot;
317 u32 tmp = cr & 0x00ffffff;
318 int i = 0;
319 if (cr == 0)
320 return 0;
321 while (tmp != 1) {
322 tmp >>= 1;
323 i++;
324 }
325 if (i == M_BITS)
326 flot = NZ | (i << M_BITS) | (cr & M_MASK);
327 else if (i < M_BITS)
328 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
329 else
330 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
331 return flot;
332}
333
334#if 0
335/*
336** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
337*/
338static u32
339float_to_cellrate(u16 rate)
340{
341 u32 exp, mantissa, cps;
342 if ((rate & NZ) == 0)
343 return 0;
344 exp = (rate >> M_BITS) & E_MASK;
345 mantissa = rate & M_MASK;
346 if (exp == 0)
347 return 1;
348 cps = (1 << M_BITS) | mantissa;
349 if (exp == M_BITS)
350 cps = cps;
351 else if (exp > M_BITS)
352 cps <<= (exp - M_BITS);
353 else
354 cps >>= (M_BITS - exp);
355 return cps;
356}
357#endif
358
359static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
360 srv_p->class_type = ATM_ABR;
361 srv_p->pcr = dev->LineRate;
362 srv_p->mcr = 0;
363 srv_p->icr = 0x055cb7;
364 srv_p->tbe = 0xffffff;
365 srv_p->frtt = 0x3a;
366 srv_p->rif = 0xf;
367 srv_p->rdf = 0xb;
368 srv_p->nrm = 0x4;
369 srv_p->trm = 0x7;
370 srv_p->cdf = 0x3;
371 srv_p->adtf = 50;
372}
373
374static int
375ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
376 struct atm_vcc *vcc, u8 flag)
377{
378 f_vc_abr_entry *f_abr_vc;
379 r_vc_abr_entry *r_abr_vc;
380 u32 icr;
381 u8 trm, nrm, crm;
382 u16 adtf, air, *ptr16;
383 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
384 f_abr_vc += vcc->vci;
385 switch (flag) {
386 case 1: /* FFRED initialization */
387#if 0 /* sanity check */
388 if (srv_p->pcr == 0)
389 return INVALID_PCR;
390 if (srv_p->pcr > dev->LineRate)
391 srv_p->pcr = dev->LineRate;
392 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
393 return MCR_UNAVAILABLE;
394 if (srv_p->mcr > srv_p->pcr)
395 return INVALID_MCR;
396 if (!(srv_p->icr))
397 srv_p->icr = srv_p->pcr;
398 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
399 return INVALID_ICR;
400 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
401 return INVALID_TBE;
402 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
403 return INVALID_FRTT;
404 if (srv_p->nrm > MAX_NRM)
405 return INVALID_NRM;
406 if (srv_p->trm > MAX_TRM)
407 return INVALID_TRM;
408 if (srv_p->adtf > MAX_ADTF)
409 return INVALID_ADTF;
410 else if (srv_p->adtf == 0)
411 srv_p->adtf = 1;
412 if (srv_p->cdf > MAX_CDF)
413 return INVALID_CDF;
414 if (srv_p->rif > MAX_RIF)
415 return INVALID_RIF;
416 if (srv_p->rdf > MAX_RDF)
417 return INVALID_RDF;
418#endif
419 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
420 f_abr_vc->f_vc_type = ABR;
421 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
422 /* i.e 2**n = 2 << (n-1) */
423 f_abr_vc->f_nrm = nrm << 8 | nrm;
424 trm = 100000/(2 << (16 - srv_p->trm));
425 if ( trm == 0) trm = 1;
426 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
427 crm = srv_p->tbe / nrm;
428 if (crm == 0) crm = 1;
429 f_abr_vc->f_crm = crm & 0xff;
430 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
431 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
432 ((srv_p->tbe/srv_p->frtt)*1000000) :
433 (1000000/(srv_p->frtt/srv_p->tbe)));
434 f_abr_vc->f_icr = cellrate_to_float(icr);
435 adtf = (10000 * srv_p->adtf)/8192;
436 if (adtf == 0) adtf = 1;
437 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
438 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
439 f_abr_vc->f_acr = f_abr_vc->f_icr;
440 f_abr_vc->f_status = 0x0042;
441 break;
442 case 0: /* RFRED initialization */
443 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
444 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
445 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
446 r_abr_vc += vcc->vci;
447 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
448 air = srv_p->pcr << (15 - srv_p->rif);
449 if (air == 0) air = 1;
450 r_abr_vc->r_air = cellrate_to_float(air);
451 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
452 dev->sum_mcr += srv_p->mcr;
453 dev->n_abr++;
454 break;
455 default:
456 break;
457 }
458 return 0;
459}
460static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
461 u32 rateLow=0, rateHigh, rate;
462 int entries;
463 struct ia_vcc *ia_vcc;
464
465 int idealSlot =0, testSlot, toBeAssigned, inc;
466 u32 spacing;
467 u16 *SchedTbl, *TstSchedTbl;
468 u16 cbrVC, vcIndex;
469 u32 fracSlot = 0;
470 u32 sp_mod = 0;
471 u32 sp_mod2 = 0;
472
473 /* IpAdjustTrafficParams */
474 if (vcc->qos.txtp.max_pcr <= 0) {
475 IF_ERR(printk("PCR for CBR not defined\n");)
476 return -1;
477 }
478 rate = vcc->qos.txtp.max_pcr;
479 entries = rate / dev->Granularity;
480 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
481 entries, rate, dev->Granularity);)
482 if (entries < 1)
483 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
484 rateLow = entries * dev->Granularity;
485 rateHigh = (entries + 1) * dev->Granularity;
486 if (3*(rate - rateLow) > (rateHigh - rate))
487 entries++;
488 if (entries > dev->CbrRemEntries) {
489 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
490 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
491 entries, dev->CbrRemEntries);)
492 return -EBUSY;
493 }
494
495 ia_vcc = INPH_IA_VCC(vcc);
496 ia_vcc->NumCbrEntry = entries;
497 dev->sum_mcr += entries * dev->Granularity;
498 /* IaFFrednInsertCbrSched */
499 // Starting at an arbitrary location, place the entries into the table
500 // as smoothly as possible
501 cbrVC = 0;
502 spacing = dev->CbrTotEntries / entries;
503 sp_mod = dev->CbrTotEntries % entries; // get modulo
504 toBeAssigned = entries;
505 fracSlot = 0;
506 vcIndex = vcc->vci;
507 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
508 while (toBeAssigned)
509 {
510 // If this is the first time, start the table loading for this connection
511 // as close to entryPoint as possible.
512 if (toBeAssigned == entries)
513 {
514 idealSlot = dev->CbrEntryPt;
515 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
516 if (dev->CbrEntryPt >= dev->CbrTotEntries)
517 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
518 } else {
519 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
520 // in the table that would be smoothest
521 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
522 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
523 }
524 if (idealSlot >= (int)dev->CbrTotEntries)
525 idealSlot -= dev->CbrTotEntries;
526 // Continuously check around this ideal value until a null
527 // location is encountered.
528 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
529 inc = 0;
530 testSlot = idealSlot;
531 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
532 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n",
533 testSlot, TstSchedTbl,toBeAssigned);)
534 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
535 while (cbrVC) // If another VC at this location, we have to keep looking
536 {
537 inc++;
538 testSlot = idealSlot - inc;
539 if (testSlot < 0) { // Wrap if necessary
540 testSlot += dev->CbrTotEntries;
541 IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n",
542 SchedTbl,testSlot);)
543 }
544 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
545 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
546 if (!cbrVC)
547 break;
548 testSlot = idealSlot + inc;
549 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
550 testSlot -= dev->CbrTotEntries;
551 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
552 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
553 testSlot, toBeAssigned);)
554 }
555 // set table index and read in value
556 TstSchedTbl = (u16*)(SchedTbl + testSlot);
557 IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n",
558 TstSchedTbl,cbrVC,inc);)
559 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
560 } /* while */
561 // Move this VCI number into this location of the CBR Sched table.
562 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex, sizeof(*TstSchedTbl));
563 dev->CbrRemEntries--;
564 toBeAssigned--;
565 } /* while */
566
567 /* IaFFrednCbrEnable */
568 dev->NumEnabledCBR++;
569 if (dev->NumEnabledCBR == 1) {
570 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
571 IF_CBR(printk("CBR is enabled\n");)
572 }
573 return 0;
574}
575static void ia_cbrVc_close (struct atm_vcc *vcc) {
576 IADEV *iadev;
577 u16 *SchedTbl, NullVci = 0;
578 u32 i, NumFound;
579
580 iadev = INPH_IA_DEV(vcc->dev);
581 iadev->NumEnabledCBR--;
582 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
583 if (iadev->NumEnabledCBR == 0) {
584 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
585 IF_CBR (printk("CBR support disabled\n");)
586 }
587 NumFound = 0;
588 for (i=0; i < iadev->CbrTotEntries; i++)
589 {
590 if (*SchedTbl == vcc->vci) {
591 iadev->CbrRemEntries++;
592 *SchedTbl = NullVci;
593 IF_CBR(NumFound++;)
594 }
595 SchedTbl++;
596 }
597 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
598}
599
600static int ia_avail_descs(IADEV *iadev) {
601 int tmp = 0;
602 ia_hack_tcq(iadev);
603 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
604 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
605 else
606 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
607 iadev->ffL.tcq_st) / 2;
608 return tmp;
609}
610
611static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
612
613static int ia_que_tx (IADEV *iadev) {
614 struct sk_buff *skb;
615 int num_desc;
616 struct atm_vcc *vcc;
617 num_desc = ia_avail_descs(iadev);
618
619 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
620 if (!(vcc = ATM_SKB(skb)->vcc)) {
621 dev_kfree_skb_any(skb);
622 printk("ia_que_tx: Null vcc\n");
623 break;
624 }
625 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
626 dev_kfree_skb_any(skb);
627 printk("Free the SKB on closed vci %d \n", vcc->vci);
628 break;
629 }
630 if (ia_pkt_tx (vcc, skb)) {
631 skb_queue_head(&iadev->tx_backlog, skb);
632 }
633 num_desc--;
634 }
635 return 0;
636}
637
638static void ia_tx_poll (IADEV *iadev) {
639 struct atm_vcc *vcc = NULL;
640 struct sk_buff *skb = NULL, *skb1 = NULL;
641 struct ia_vcc *iavcc;
642 IARTN_Q * rtne;
643
644 ia_hack_tcq(iadev);
645 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
646 skb = rtne->data.txskb;
647 if (!skb) {
648 printk("ia_tx_poll: skb is null\n");
649 goto out;
650 }
651 vcc = ATM_SKB(skb)->vcc;
652 if (!vcc) {
653 printk("ia_tx_poll: vcc is null\n");
654 dev_kfree_skb_any(skb);
655 goto out;
656 }
657
658 iavcc = INPH_IA_VCC(vcc);
659 if (!iavcc) {
660 printk("ia_tx_poll: iavcc is null\n");
661 dev_kfree_skb_any(skb);
662 goto out;
663 }
664
665 skb1 = skb_dequeue(&iavcc->txing_skb);
666 while (skb1 && (skb1 != skb)) {
667 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
668 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
669 }
670 IF_ERR(printk("Release the SKB not match\n");)
671 if ((vcc->pop) && (skb1->len != 0))
672 {
673 vcc->pop(vcc, skb1);
674 IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
675 (long)skb1);)
676 }
677 else
678 dev_kfree_skb_any(skb1);
679 skb1 = skb_dequeue(&iavcc->txing_skb);
680 }
681 if (!skb1) {
682 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
683 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
684 break;
685 }
686 if ((vcc->pop) && (skb->len != 0))
687 {
688 vcc->pop(vcc, skb);
689 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
690 }
691 else
692 dev_kfree_skb_any(skb);
693 kfree(rtne);
694 }
695 ia_que_tx(iadev);
696out:
697 return;
698}
699#if 0
700static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
701{
702 u32 t;
703 int i;
704 /*
705 * Issue a command to enable writes to the NOVRAM
706 */
707 NVRAM_CMD (EXTEND + EWEN);
708 NVRAM_CLR_CE;
709 /*
710 * issue the write command
711 */
712 NVRAM_CMD(IAWRITE + addr);
713 /*
714 * Send the data, starting with D15, then D14, and so on for 16 bits
715 */
716 for (i=15; i>=0; i--) {
717 NVRAM_CLKOUT (val & 0x8000);
718 val <<= 1;
719 }
720 NVRAM_CLR_CE;
721 CFG_OR(NVCE);
722 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
723 while (!(t & NVDO))
724 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
725
726 NVRAM_CLR_CE;
727 /*
728 * disable writes again
729 */
730 NVRAM_CMD(EXTEND + EWDS)
731 NVRAM_CLR_CE;
732 CFG_AND(~NVDI);
733}
734#endif
735
736static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
737{
738 u_short val;
739 u32 t;
740 int i;
741 /*
742 * Read the first bit that was clocked with the falling edge of the
743 * the last command data clock
744 */
745 NVRAM_CMD(IAREAD + addr);
746 /*
747 * Now read the rest of the bits, the next bit read is D14, then D13,
748 * and so on.
749 */
750 val = 0;
751 for (i=15; i>=0; i--) {
752 NVRAM_CLKIN(t);
753 val |= (t << i);
754 }
755 NVRAM_CLR_CE;
756 CFG_AND(~NVDI);
757 return val;
758}
759
760static void ia_hw_type(IADEV *iadev) {
761 u_short memType = ia_eeprom_get(iadev, 25);
762 iadev->memType = memType;
763 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
764 iadev->num_tx_desc = IA_TX_BUF;
765 iadev->tx_buf_sz = IA_TX_BUF_SZ;
766 iadev->num_rx_desc = IA_RX_BUF;
767 iadev->rx_buf_sz = IA_RX_BUF_SZ;
768 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
769 if (IA_TX_BUF == DFL_TX_BUFFERS)
770 iadev->num_tx_desc = IA_TX_BUF / 2;
771 else
772 iadev->num_tx_desc = IA_TX_BUF;
773 iadev->tx_buf_sz = IA_TX_BUF_SZ;
774 if (IA_RX_BUF == DFL_RX_BUFFERS)
775 iadev->num_rx_desc = IA_RX_BUF / 2;
776 else
777 iadev->num_rx_desc = IA_RX_BUF;
778 iadev->rx_buf_sz = IA_RX_BUF_SZ;
779 }
780 else {
781 if (IA_TX_BUF == DFL_TX_BUFFERS)
782 iadev->num_tx_desc = IA_TX_BUF / 8;
783 else
784 iadev->num_tx_desc = IA_TX_BUF;
785 iadev->tx_buf_sz = IA_TX_BUF_SZ;
786 if (IA_RX_BUF == DFL_RX_BUFFERS)
787 iadev->num_rx_desc = IA_RX_BUF / 8;
788 else
789 iadev->num_rx_desc = IA_RX_BUF;
790 iadev->rx_buf_sz = IA_RX_BUF_SZ;
791 }
792 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
793 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
794 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
795 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
796
797#if 0
798 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
799 iadev->phy_type = PHY_OC3C_S;
800 else if ((memType & FE_MASK) == FE_UTP_OPTION)
801 iadev->phy_type = PHY_UTP155;
802 else
803 iadev->phy_type = PHY_OC3C_M;
804#endif
805
806 iadev->phy_type = memType & FE_MASK;
807 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
808 memType,iadev->phy_type);)
809 if (iadev->phy_type == FE_25MBIT_PHY)
810 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
811 else if (iadev->phy_type == FE_DS3_PHY)
812 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
813 else if (iadev->phy_type == FE_E3_PHY)
814 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
815 else
816 iadev->LineRate = (u32)(ATM_OC3_PCR);
817 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
818
819}
820
821static void IaFrontEndIntr(IADEV *iadev) {
822 volatile IA_SUNI *suni;
823 volatile ia_mb25_t *mb25;
824 volatile suni_pm7345_t *suni_pm7345;
825
826 if(iadev->phy_type & FE_25MBIT_PHY) {
827 mb25 = (ia_mb25_t*)iadev->phy;
828 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
829 } else if (iadev->phy_type & FE_DS3_PHY) {
830 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
831 /* clear FRMR interrupts */
832 (void) suni_pm7345->suni_ds3_frm_intr_stat;
833 iadev->carrier_detect =
834 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
835 } else if (iadev->phy_type & FE_E3_PHY ) {
836 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
837 (void) suni_pm7345->suni_e3_frm_maint_intr_ind;
838 iadev->carrier_detect =
839 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
840 }
841 else {
842 suni = (IA_SUNI *)iadev->phy;
843 (void) suni->suni_rsop_status;
844 iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
845 }
846 if (iadev->carrier_detect)
847 printk("IA: SUNI carrier detected\n");
848 else
849 printk("IA: SUNI carrier lost signal\n");
850 return;
851}
852
853static void ia_mb25_init (IADEV *iadev)
854{
855 volatile ia_mb25_t *mb25 = (ia_mb25_t*)iadev->phy;
856#if 0
857 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
858#endif
859 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
860 mb25->mb25_diag_control = 0;
861 /*
862 * Initialize carrier detect state
863 */
864 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
865 return;
866}
867
868static void ia_suni_pm7345_init (IADEV *iadev)
869{
870 volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
871 if (iadev->phy_type & FE_DS3_PHY)
872 {
873 iadev->carrier_detect =
874 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
875 suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
876 suni_pm7345->suni_ds3_frm_cfg = 1;
877 suni_pm7345->suni_ds3_tran_cfg = 1;
878 suni_pm7345->suni_config = 0;
879 suni_pm7345->suni_splr_cfg = 0;
880 suni_pm7345->suni_splt_cfg = 0;
881 }
882 else
883 {
884 iadev->carrier_detect =
885 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
886 suni_pm7345->suni_e3_frm_fram_options = 0x4;
887 suni_pm7345->suni_e3_frm_maint_options = 0x20;
888 suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
889 suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
890 suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
891 suni_pm7345->suni_e3_tran_fram_options = 0x1;
892 suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
893 suni_pm7345->suni_splr_cfg = 0x41;
894 suni_pm7345->suni_splt_cfg = 0x41;
895 }
896 /*
897 * Enable RSOP loss of signal interrupt.
898 */
899 suni_pm7345->suni_intr_enbl = 0x28;
900
901 /*
902 * Clear error counters
903 */
904 suni_pm7345->suni_id_reset = 0;
905
906 /*
907 * Clear "PMCTST" in master test register.
908 */
909 suni_pm7345->suni_master_test = 0;
910
911 suni_pm7345->suni_rxcp_ctrl = 0x2c;
912 suni_pm7345->suni_rxcp_fctrl = 0x81;
913
914 suni_pm7345->suni_rxcp_idle_pat_h1 =
915 suni_pm7345->suni_rxcp_idle_pat_h2 =
916 suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
917 suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
918
919 suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
920 suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
921 suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
922 suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
923
924 suni_pm7345->suni_rxcp_cell_pat_h1 =
925 suni_pm7345->suni_rxcp_cell_pat_h2 =
926 suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
927 suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
928
929 suni_pm7345->suni_rxcp_cell_mask_h1 =
930 suni_pm7345->suni_rxcp_cell_mask_h2 =
931 suni_pm7345->suni_rxcp_cell_mask_h3 =
932 suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
933
934 suni_pm7345->suni_txcp_ctrl = 0xa4;
935 suni_pm7345->suni_txcp_intr_en_sts = 0x10;
936 suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
937
938 suni_pm7345->suni_config &= ~(SUNI_PM7345_LLB |
939 SUNI_PM7345_CLB |
940 SUNI_PM7345_DLB |
941 SUNI_PM7345_PLB);
942#ifdef __SNMP__
943 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
944#endif /* __SNMP__ */
945 return;
946}
947
948
949/***************************** IA_LIB END *****************************/
950
951#ifdef CONFIG_ATM_IA_DEBUG
952static int tcnter = 0;
953static void xdump( u_char* cp, int length, char* prefix )
954{
955 int col, count;
956 u_char prntBuf[120];
957 u_char* pBuf = prntBuf;
958 count = 0;
959 while(count < length){
960 pBuf += sprintf( pBuf, "%s", prefix );
961 for(col = 0;count + col < length && col < 16; col++){
962 if (col != 0 && (col % 4) == 0)
963 pBuf += sprintf( pBuf, " " );
964 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
965 }
966 while(col++ < 16){ /* pad end of buffer with blanks */
967 if ((col % 4) == 0)
968 sprintf( pBuf, " " );
969 pBuf += sprintf( pBuf, " " );
970 }
971 pBuf += sprintf( pBuf, " " );
972 for(col = 0;count + col < length && col < 16; col++){
973 if (isprint((int)cp[count + col]))
974 pBuf += sprintf( pBuf, "%c", cp[count + col] );
975 else
976 pBuf += sprintf( pBuf, "." );
977 }
978 printk("%s\n", prntBuf);
979 count += col;
980 pBuf = prntBuf;
981 }
982
983} /* close xdump(... */
984#endif /* CONFIG_ATM_IA_DEBUG */
985
986
987static struct atm_dev *ia_boards = NULL;
988
989#define ACTUAL_RAM_BASE \
990 RAM_BASE*((iadev->mem)/(128 * 1024))
991#define ACTUAL_SEG_RAM_BASE \
992 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
993#define ACTUAL_REASS_RAM_BASE \
994 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
995
996
997/*-- some utilities and memory allocation stuff will come here -------------*/
998
999static void desc_dbg(IADEV *iadev) {
1000
1001 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1002 u32 i;
1003 void __iomem *tmp;
1004 // regval = readl((u32)ia_cmds->maddr);
1005 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1006 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1007 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1008 readw(iadev->seg_ram+tcq_wr_ptr-2));
1009 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1010 iadev->ffL.tcq_rd);
1011 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1012 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1013 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1014 i = 0;
1015 while (tcq_st_ptr != tcq_ed_ptr) {
1016 tmp = iadev->seg_ram+tcq_st_ptr;
1017 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1018 tcq_st_ptr += 2;
1019 }
1020 for(i=0; i <iadev->num_tx_desc; i++)
1021 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1022}
1023
1024
1025/*----------------------------- Receiving side stuff --------------------------*/
1026
1027static void rx_excp_rcvd(struct atm_dev *dev)
1028{
1029#if 0 /* closing the receiving size will cause too many excp int */
1030 IADEV *iadev;
1031 u_short state;
1032 u_short excpq_rd_ptr;
1033 //u_short *ptr;
1034 int vci, error = 1;
1035 iadev = INPH_IA_DEV(dev);
1036 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1037 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1038 { printk("state = %x \n", state);
1039 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1040 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1041 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1042 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1043 // TODO: update exception stat
1044 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1045 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1046 // pwang_test
1047 excpq_rd_ptr += 4;
1048 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1049 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1050 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1051 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1052 }
1053#endif
1054}
1055
1056static void free_desc(struct atm_dev *dev, int desc)
1057{
1058 IADEV *iadev;
1059 iadev = INPH_IA_DEV(dev);
1060 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1061 iadev->rfL.fdq_wr +=2;
1062 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1063 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1064 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1065}
1066
1067
1068static int rx_pkt(struct atm_dev *dev)
1069{
1070 IADEV *iadev;
1071 struct atm_vcc *vcc;
1072 unsigned short status;
1073 struct rx_buf_desc __iomem *buf_desc_ptr;
1074 int desc;
1075 struct dle* wr_ptr;
1076 int len;
1077 struct sk_buff *skb;
1078 u_int buf_addr, dma_addr;
1079
1080 iadev = INPH_IA_DEV(dev);
1081 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1082 {
1083 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1084 return -EINVAL;
1085 }
1086 /* mask 1st 3 bits to get the actual descno. */
1087 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1088 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1089 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1090 printk(" pcq_wr_ptr = 0x%x\n",
1091 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1092 /* update the read pointer - maybe we shud do this in the end*/
1093 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1094 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1095 else
1096 iadev->rfL.pcq_rd += 2;
1097 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1098
1099 /* get the buffer desc entry.
1100 update stuff. - doesn't seem to be any update necessary
1101 */
1102 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1103 /* make the ptr point to the corresponding buffer desc entry */
1104 buf_desc_ptr += desc;
1105 if (!desc || (desc > iadev->num_rx_desc) ||
1106 ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1107 free_desc(dev, desc);
1108 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1109 return -1;
1110 }
1111 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1112 if (!vcc)
1113 {
1114 free_desc(dev, desc);
1115 printk("IA: null vcc, drop PDU\n");
1116 return -1;
1117 }
1118
1119
1120 /* might want to check the status bits for errors */
1121 status = (u_short) (buf_desc_ptr->desc_mode);
1122 if (status & (RX_CER | RX_PTE | RX_OFL))
1123 {
1124 atomic_inc(&vcc->stats->rx_err);
1125 IF_ERR(printk("IA: bad packet, dropping it");)
1126 if (status & RX_CER) {
1127 IF_ERR(printk(" cause: packet CRC error\n");)
1128 }
1129 else if (status & RX_PTE) {
1130 IF_ERR(printk(" cause: packet time out\n");)
1131 }
1132 else {
1133 IF_ERR(printk(" cause: buffer overflow\n");)
1134 }
1135 goto out_free_desc;
1136 }
1137
1138 /*
1139 build DLE.
1140 */
1141
1142 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1143 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1144 len = dma_addr - buf_addr;
1145 if (len > iadev->rx_buf_sz) {
1146 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1147 atomic_inc(&vcc->stats->rx_err);
1148 goto out_free_desc;
1149 }
1150
1151 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1152 if (vcc->vci < 32)
1153 printk("Drop control packets\n");
1154 goto out_free_desc;
1155 }
1156 skb_put(skb,len);
1157 // pwang_test
1158 ATM_SKB(skb)->vcc = vcc;
1159 ATM_DESC(skb) = desc;
1160 skb_queue_tail(&iadev->rx_dma_q, skb);
1161
1162 /* Build the DLE structure */
1163 wr_ptr = iadev->rx_dle_q.write;
1164 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
1165 len, PCI_DMA_FROMDEVICE);
1166 wr_ptr->local_pkt_addr = buf_addr;
1167 wr_ptr->bytes = len; /* We don't know this do we ?? */
1168 wr_ptr->mode = DMA_INT_ENABLE;
1169
1170 /* shud take care of wrap around here too. */
1171 if(++wr_ptr == iadev->rx_dle_q.end)
1172 wr_ptr = iadev->rx_dle_q.start;
1173 iadev->rx_dle_q.write = wr_ptr;
1174 udelay(1);
1175 /* Increment transaction counter */
1176 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1177out: return 0;
1178out_free_desc:
1179 free_desc(dev, desc);
1180 goto out;
1181}
1182
1183static void rx_intr(struct atm_dev *dev)
1184{
1185 IADEV *iadev;
1186 u_short status;
1187 u_short state, i;
1188
1189 iadev = INPH_IA_DEV(dev);
1190 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1191 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1192 if (status & RX_PKT_RCVD)
1193 {
1194 /* do something */
1195 /* Basically recvd an interrupt for receiving a packet.
1196 A descriptor would have been written to the packet complete
1197 queue. Get all the descriptors and set up dma to move the
1198 packets till the packet complete queue is empty..
1199 */
1200 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1201 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1202 while(!(state & PCQ_EMPTY))
1203 {
1204 rx_pkt(dev);
1205 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1206 }
1207 iadev->rxing = 1;
1208 }
1209 if (status & RX_FREEQ_EMPT)
1210 {
1211 if (iadev->rxing) {
1212 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1213 iadev->rx_tmp_jif = jiffies;
1214 iadev->rxing = 0;
1215 }
1216 else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
1217 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1218 for (i = 1; i <= iadev->num_rx_desc; i++)
1219 free_desc(dev, i);
1220printk("Test logic RUN!!!!\n");
1221 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1222 iadev->rxing = 1;
1223 }
1224 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1225 }
1226
1227 if (status & RX_EXCP_RCVD)
1228 {
1229 /* probably need to handle the exception queue also. */
1230 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1231 rx_excp_rcvd(dev);
1232 }
1233
1234
1235 if (status & RX_RAW_RCVD)
1236 {
1237 /* need to handle the raw incoming cells. This deepnds on
1238 whether we have programmed to receive the raw cells or not.
1239 Else ignore. */
1240 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1241 }
1242}
1243
1244
1245static void rx_dle_intr(struct atm_dev *dev)
1246{
1247 IADEV *iadev;
1248 struct atm_vcc *vcc;
1249 struct sk_buff *skb;
1250 int desc;
1251 u_short state;
1252 struct dle *dle, *cur_dle;
1253 u_int dle_lp;
1254 int len;
1255 iadev = INPH_IA_DEV(dev);
1256
1257 /* free all the dles done, that is just update our own dle read pointer
1258 - do we really need to do this. Think not. */
1259 /* DMA is done, just get all the recevie buffers from the rx dma queue
1260 and push them up to the higher layer protocol. Also free the desc
1261 associated with the buffer. */
1262 dle = iadev->rx_dle_q.read;
1263 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1264 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1265 while(dle != cur_dle)
1266 {
1267 /* free the DMAed skb */
1268 skb = skb_dequeue(&iadev->rx_dma_q);
1269 if (!skb)
1270 goto INCR_DLE;
1271 desc = ATM_DESC(skb);
1272 free_desc(dev, desc);
1273
1274 if (!(len = skb->len))
1275 {
1276 printk("rx_dle_intr: skb len 0\n");
1277 dev_kfree_skb_any(skb);
1278 }
1279 else
1280 {
1281 struct cpcs_trailer *trailer;
1282 u_short length;
1283 struct ia_vcc *ia_vcc;
1284
1285 pci_unmap_single(iadev->pci, iadev->rx_dle_q.write->sys_pkt_addr,
1286 len, PCI_DMA_FROMDEVICE);
1287 /* no VCC related housekeeping done as yet. lets see */
1288 vcc = ATM_SKB(skb)->vcc;
1289 if (!vcc) {
1290 printk("IA: null vcc\n");
1291 dev_kfree_skb_any(skb);
1292 goto INCR_DLE;
1293 }
1294 ia_vcc = INPH_IA_VCC(vcc);
1295 if (ia_vcc == NULL)
1296 {
1297 atomic_inc(&vcc->stats->rx_err);
1298 dev_kfree_skb_any(skb);
1299 atm_return(vcc, atm_guess_pdu2truesize(len));
1300 goto INCR_DLE;
1301 }
1302 // get real pkt length pwang_test
1303 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1304 skb->len - sizeof(*trailer));
1305 length = swap_byte_order(trailer->length);
1306 if ((length > iadev->rx_buf_sz) || (length >
1307 (skb->len - sizeof(struct cpcs_trailer))))
1308 {
1309 atomic_inc(&vcc->stats->rx_err);
1310 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1311 length, skb->len);)
1312 dev_kfree_skb_any(skb);
1313 atm_return(vcc, atm_guess_pdu2truesize(len));
1314 goto INCR_DLE;
1315 }
1316 skb_trim(skb, length);
1317
1318 /* Display the packet */
1319 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1320 xdump(skb->data, skb->len, "RX: ");
1321 printk("\n");)
1322
1323 IF_RX(printk("rx_dle_intr: skb push");)
1324 vcc->push(vcc,skb);
1325 atomic_inc(&vcc->stats->rx);
1326 iadev->rx_pkt_cnt++;
1327 }
1328INCR_DLE:
1329 if (++dle == iadev->rx_dle_q.end)
1330 dle = iadev->rx_dle_q.start;
1331 }
1332 iadev->rx_dle_q.read = dle;
1333
1334 /* if the interrupts are masked because there were no free desc available,
1335 unmask them now. */
1336 if (!iadev->rxing) {
1337 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1338 if (!(state & FREEQ_EMPTY)) {
1339 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1340 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1341 iadev->reass_reg+REASS_MASK_REG);
1342 iadev->rxing++;
1343 }
1344 }
1345}
1346
1347
1348static int open_rx(struct atm_vcc *vcc)
1349{
1350 IADEV *iadev;
1351 u_short __iomem *vc_table;
1352 u_short __iomem *reass_ptr;
1353 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1354
1355 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1356 iadev = INPH_IA_DEV(vcc->dev);
1357 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1358 if (iadev->phy_type & FE_25MBIT_PHY) {
1359 printk("IA: ABR not support\n");
1360 return -EINVAL;
1361 }
1362 }
1363 /* Make only this VCI in the vc table valid and let all
1364 others be invalid entries */
1365 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1366 vc_table += vcc->vci;
1367 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1368
1369 *vc_table = vcc->vci << 6;
1370 /* Also keep a list of open rx vcs so that we can attach them with
1371 incoming PDUs later. */
1372 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1373 (vcc->qos.txtp.traffic_class == ATM_ABR))
1374 {
1375 srv_cls_param_t srv_p;
1376 init_abr_vc(iadev, &srv_p);
1377 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1378 }
1379 else { /* for UBR later may need to add CBR logic */
1380 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1381 reass_ptr += vcc->vci;
1382 *reass_ptr = NO_AAL5_PKT;
1383 }
1384
1385 if (iadev->rx_open[vcc->vci])
1386 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1387 vcc->dev->number, vcc->vci);
1388 iadev->rx_open[vcc->vci] = vcc;
1389 return 0;
1390}
1391
1392static int rx_init(struct atm_dev *dev)
1393{
1394 IADEV *iadev;
1395 struct rx_buf_desc __iomem *buf_desc_ptr;
1396 unsigned long rx_pkt_start = 0;
1397 void *dle_addr;
1398 struct abr_vc_table *abr_vc_table;
1399 u16 *vc_table;
1400 u16 *reass_table;
1401 int i,j, vcsize_sel;
1402 u_short freeq_st_adr;
1403 u_short *freeq_start;
1404
1405 iadev = INPH_IA_DEV(dev);
1406 // spin_lock_init(&iadev->rx_lock);
1407
1408 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1409 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1410 &iadev->rx_dle_dma);
1411 if (!dle_addr) {
1412 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1413 goto err_out;
1414 }
1415 iadev->rx_dle_q.start = (struct dle *)dle_addr;
1416 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1417 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
1418 iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1419 /* the end of the dle q points to the entry after the last
1420 DLE that can be used. */
1421
1422 /* write the upper 20 bits of the start address to rx list address register */
1423 /* We know this is 32bit bus addressed so the following is safe */
1424 writel(iadev->rx_dle_dma & 0xfffff000,
1425 iadev->dma + IPHASE5575_RX_LIST_ADDR);
1426 IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n",
1427 iadev->dma+IPHASE5575_TX_LIST_ADDR,
1428 *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));
1429 printk("Rx Dle list addr: 0x%p value: 0x%0x\n",
1430 iadev->dma+IPHASE5575_RX_LIST_ADDR,
1431 *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)
1432
1433 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1434 writew(0, iadev->reass_reg+MODE_REG);
1435 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1436
1437 /* Receive side control memory map
1438 -------------------------------
1439
1440 Buffer descr 0x0000 (736 - 23K)
1441 VP Table 0x5c00 (256 - 512)
1442 Except q 0x5e00 (128 - 512)
1443 Free buffer q 0x6000 (1K - 2K)
1444 Packet comp q 0x6800 (1K - 2K)
1445 Reass Table 0x7000 (1K - 2K)
1446 VC Table 0x7800 (1K - 2K)
1447 ABR VC Table 0x8000 (1K - 32K)
1448 */
1449
1450 /* Base address for Buffer Descriptor Table */
1451 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1452 /* Set the buffer size register */
1453 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1454
1455 /* Initialize each entry in the Buffer Descriptor Table */
1456 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1457 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1458 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1459 buf_desc_ptr++;
1460 rx_pkt_start = iadev->rx_pkt_ram;
1461 for(i=1; i<=iadev->num_rx_desc; i++)
1462 {
1463 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1464 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1465 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1466 buf_desc_ptr++;
1467 rx_pkt_start += iadev->rx_buf_sz;
1468 }
1469 IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n", buf_desc_ptr);)
1470 i = FREE_BUF_DESC_Q*iadev->memSize;
1471 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1472 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1473 writew(i+iadev->num_rx_desc*sizeof(u_short),
1474 iadev->reass_reg+FREEQ_ED_ADR);
1475 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1476 writew(i+iadev->num_rx_desc*sizeof(u_short),
1477 iadev->reass_reg+FREEQ_WR_PTR);
1478 /* Fill the FREEQ with all the free descriptors. */
1479 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1480 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1481 for(i=1; i<=iadev->num_rx_desc; i++)
1482 {
1483 *freeq_start = (u_short)i;
1484 freeq_start++;
1485 }
1486 IF_INIT(printk("freeq_start: 0x%p\n", freeq_start);)
1487 /* Packet Complete Queue */
1488 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1489 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1490 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1491 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1492 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1493
1494 /* Exception Queue */
1495 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1496 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1497 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1498 iadev->reass_reg+EXCP_Q_ED_ADR);
1499 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1500 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1501
1502 /* Load local copy of FREEQ and PCQ ptrs */
1503 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1504 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1505 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1506 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1507 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1508 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1509 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1510 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1511
1512 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1513 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1514 iadev->rfL.pcq_wr);)
1515 /* just for check - no VP TBL */
1516 /* VP Table */
1517 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1518 /* initialize VP Table for invalid VPIs
1519 - I guess we can write all 1s or 0x000f in the entire memory
1520 space or something similar.
1521 */
1522
1523 /* This seems to work and looks right to me too !!! */
1524 i = REASS_TABLE * iadev->memSize;
1525 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1526 /* initialize Reassembly table to I don't know what ???? */
1527 reass_table = (u16 *)(iadev->reass_ram+i);
1528 j = REASS_TABLE_SZ * iadev->memSize;
1529 for(i=0; i < j; i++)
1530 *reass_table++ = NO_AAL5_PKT;
1531 i = 8*1024;
1532 vcsize_sel = 0;
1533 while (i != iadev->num_vc) {
1534 i /= 2;
1535 vcsize_sel++;
1536 }
1537 i = RX_VC_TABLE * iadev->memSize;
1538 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1539 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1540 j = RX_VC_TABLE_SZ * iadev->memSize;
1541 for(i = 0; i < j; i++)
1542 {
1543 /* shift the reassembly pointer by 3 + lower 3 bits of
1544 vc_lkup_base register (=3 for 1K VCs) and the last byte
1545 is those low 3 bits.
1546 Shall program this later.
1547 */
1548 *vc_table = (i << 6) | 15; /* for invalid VCI */
1549 vc_table++;
1550 }
1551 /* ABR VC table */
1552 i = ABR_VC_TABLE * iadev->memSize;
1553 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1554
1555 i = ABR_VC_TABLE * iadev->memSize;
1556 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1557 j = REASS_TABLE_SZ * iadev->memSize;
1558 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1559 for(i = 0; i < j; i++) {
1560 abr_vc_table->rdf = 0x0003;
1561 abr_vc_table->air = 0x5eb1;
1562 abr_vc_table++;
1563 }
1564
1565 /* Initialize other registers */
1566
1567 /* VP Filter Register set for VC Reassembly only */
1568 writew(0xff00, iadev->reass_reg+VP_FILTER);
1569 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1570 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1571
1572 /* Packet Timeout Count related Registers :
1573 Set packet timeout to occur in about 3 seconds
1574 Set Packet Aging Interval count register to overflow in about 4 us
1575 */
1576 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
1577
1578 i = (j >> 6) & 0xFF;
1579 j += 2 * (j - 1);
1580 i |= ((j << 2) & 0xFF00);
1581 writew(i, iadev->reass_reg+TMOUT_RANGE);
1582
1583 /* initiate the desc_tble */
1584 for(i=0; i<iadev->num_tx_desc;i++)
1585 iadev->desc_tbl[i].timestamp = 0;
1586
1587 /* to clear the interrupt status register - read it */
1588 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1589
1590 /* Mask Register - clear it */
1591 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1592
1593 skb_queue_head_init(&iadev->rx_dma_q);
1594 iadev->rx_free_desc_qhead = NULL;
1595
1596 iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL);
1597 if (!iadev->rx_open) {
1598 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1599 dev->number);
1600 goto err_free_dle;
1601 }
1602
1603 iadev->rxing = 1;
1604 iadev->rx_pkt_cnt = 0;
1605 /* Mode Register */
1606 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1607 return 0;
1608
1609err_free_dle:
1610 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1611 iadev->rx_dle_dma);
1612err_out:
1613 return -ENOMEM;
1614}
1615
1616
1617/*
1618 The memory map suggested in appendix A and the coding for it.
1619 Keeping it around just in case we change our mind later.
1620
1621 Buffer descr 0x0000 (128 - 4K)
1622 UBR sched 0x1000 (1K - 4K)
1623 UBR Wait q 0x2000 (1K - 4K)
1624 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1625 (128 - 256) each
1626 extended VC 0x4000 (1K - 8K)
1627 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1628 CBR sched 0x7000 (as needed)
1629 VC table 0x8000 (1K - 32K)
1630*/
1631
1632static void tx_intr(struct atm_dev *dev)
1633{
1634 IADEV *iadev;
1635 unsigned short status;
1636 unsigned long flags;
1637
1638 iadev = INPH_IA_DEV(dev);
1639
1640 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1641 if (status & TRANSMIT_DONE){
1642
1643 IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1644 spin_lock_irqsave(&iadev->tx_lock, flags);
1645 ia_tx_poll(iadev);
1646 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1647 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1648 if (iadev->close_pending)
1649 wake_up(&iadev->close_wait);
1650 }
1651 if (status & TCQ_NOT_EMPTY)
1652 {
1653 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1654 }
1655}
1656
1657static void tx_dle_intr(struct atm_dev *dev)
1658{
1659 IADEV *iadev;
1660 struct dle *dle, *cur_dle;
1661 struct sk_buff *skb;
1662 struct atm_vcc *vcc;
1663 struct ia_vcc *iavcc;
1664 u_int dle_lp;
1665 unsigned long flags;
1666
1667 iadev = INPH_IA_DEV(dev);
1668 spin_lock_irqsave(&iadev->tx_lock, flags);
1669 dle = iadev->tx_dle_q.read;
1670 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1671 (sizeof(struct dle)*DLE_ENTRIES - 1);
1672 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1673 while (dle != cur_dle)
1674 {
1675 /* free the DMAed skb */
1676 skb = skb_dequeue(&iadev->tx_dma_q);
1677 if (!skb) break;
1678
1679 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1680 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1681 pci_unmap_single(iadev->pci, dle->sys_pkt_addr, skb->len,
1682 PCI_DMA_TODEVICE);
1683 }
1684 vcc = ATM_SKB(skb)->vcc;
1685 if (!vcc) {
1686 printk("tx_dle_intr: vcc is null\n");
1687 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1688 dev_kfree_skb_any(skb);
1689
1690 return;
1691 }
1692 iavcc = INPH_IA_VCC(vcc);
1693 if (!iavcc) {
1694 printk("tx_dle_intr: iavcc is null\n");
1695 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1696 dev_kfree_skb_any(skb);
1697 return;
1698 }
1699 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1700 if ((vcc->pop) && (skb->len != 0))
1701 {
1702 vcc->pop(vcc, skb);
1703 }
1704 else {
1705 dev_kfree_skb_any(skb);
1706 }
1707 }
1708 else { /* Hold the rate-limited skb for flow control */
1709 IA_SKB_STATE(skb) |= IA_DLED;
1710 skb_queue_tail(&iavcc->txing_skb, skb);
1711 }
1712 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n", skb);)
1713 if (++dle == iadev->tx_dle_q.end)
1714 dle = iadev->tx_dle_q.start;
1715 }
1716 iadev->tx_dle_q.read = dle;
1717 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1718}
1719
1720static int open_tx(struct atm_vcc *vcc)
1721{
1722 struct ia_vcc *ia_vcc;
1723 IADEV *iadev;
1724 struct main_vc *vc;
1725 struct ext_vc *evc;
1726 int ret;
1727 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1728 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1729 iadev = INPH_IA_DEV(vcc->dev);
1730
1731 if (iadev->phy_type & FE_25MBIT_PHY) {
1732 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1733 printk("IA: ABR not support\n");
1734 return -EINVAL;
1735 }
1736 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1737 printk("IA: CBR not support\n");
1738 return -EINVAL;
1739 }
1740 }
1741 ia_vcc = INPH_IA_VCC(vcc);
1742 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1743 if (vcc->qos.txtp.max_sdu >
1744 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1745 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1746 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1747 vcc->dev_data = NULL;
1748 kfree(ia_vcc);
1749 return -EINVAL;
1750 }
1751 ia_vcc->vc_desc_cnt = 0;
1752 ia_vcc->txing = 1;
1753
1754 /* find pcr */
1755 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1756 vcc->qos.txtp.pcr = iadev->LineRate;
1757 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1758 vcc->qos.txtp.pcr = iadev->LineRate;
1759 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1760 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1761 if (vcc->qos.txtp.pcr > iadev->LineRate)
1762 vcc->qos.txtp.pcr = iadev->LineRate;
1763 ia_vcc->pcr = vcc->qos.txtp.pcr;
1764
1765 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1766 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1767 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1768 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1769 if (ia_vcc->pcr < iadev->rate_limit)
1770 skb_queue_head_init (&ia_vcc->txing_skb);
1771 if (ia_vcc->pcr < iadev->rate_limit) {
1772 struct sock *sk = sk_atm(vcc);
1773
1774 if (vcc->qos.txtp.max_sdu != 0) {
1775 if (ia_vcc->pcr > 60000)
1776 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1777 else if (ia_vcc->pcr > 2000)
1778 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1779 else
1780 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1781 }
1782 else
1783 sk->sk_sndbuf = 24576;
1784 }
1785
1786 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1787 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1788 vc += vcc->vci;
1789 evc += vcc->vci;
1790 memset((caddr_t)vc, 0, sizeof(*vc));
1791 memset((caddr_t)evc, 0, sizeof(*evc));
1792
1793 /* store the most significant 4 bits of vci as the last 4 bits
1794 of first part of atm header.
1795 store the last 12 bits of vci as first 12 bits of the second
1796 part of the atm header.
1797 */
1798 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1799 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1800
1801 /* check the following for different traffic classes */
1802 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1803 {
1804 vc->type = UBR;
1805 vc->status = CRC_APPEND;
1806 vc->acr = cellrate_to_float(iadev->LineRate);
1807 if (vcc->qos.txtp.pcr > 0)
1808 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1809 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1810 vcc->qos.txtp.max_pcr,vc->acr);)
1811 }
1812 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1813 { srv_cls_param_t srv_p;
1814 IF_ABR(printk("Tx ABR VCC\n");)
1815 init_abr_vc(iadev, &srv_p);
1816 if (vcc->qos.txtp.pcr > 0)
1817 srv_p.pcr = vcc->qos.txtp.pcr;
1818 if (vcc->qos.txtp.min_pcr > 0) {
1819 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1820 if (tmpsum > iadev->LineRate)
1821 return -EBUSY;
1822 srv_p.mcr = vcc->qos.txtp.min_pcr;
1823 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1824 }
1825 else srv_p.mcr = 0;
1826 if (vcc->qos.txtp.icr)
1827 srv_p.icr = vcc->qos.txtp.icr;
1828 if (vcc->qos.txtp.tbe)
1829 srv_p.tbe = vcc->qos.txtp.tbe;
1830 if (vcc->qos.txtp.frtt)
1831 srv_p.frtt = vcc->qos.txtp.frtt;
1832 if (vcc->qos.txtp.rif)
1833 srv_p.rif = vcc->qos.txtp.rif;
1834 if (vcc->qos.txtp.rdf)
1835 srv_p.rdf = vcc->qos.txtp.rdf;
1836 if (vcc->qos.txtp.nrm_pres)
1837 srv_p.nrm = vcc->qos.txtp.nrm;
1838 if (vcc->qos.txtp.trm_pres)
1839 srv_p.trm = vcc->qos.txtp.trm;
1840 if (vcc->qos.txtp.adtf_pres)
1841 srv_p.adtf = vcc->qos.txtp.adtf;
1842 if (vcc->qos.txtp.cdf_pres)
1843 srv_p.cdf = vcc->qos.txtp.cdf;
1844 if (srv_p.icr > srv_p.pcr)
1845 srv_p.icr = srv_p.pcr;
1846 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1847 srv_p.pcr, srv_p.mcr);)
1848 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1849 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1850 if (iadev->phy_type & FE_25MBIT_PHY) {
1851 printk("IA: CBR not support\n");
1852 return -EINVAL;
1853 }
1854 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1855 IF_CBR(printk("PCR is not available\n");)
1856 return -1;
1857 }
1858 vc->type = CBR;
1859 vc->status = CRC_APPEND;
1860 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1861 return ret;
1862 }
1863 }
1864 else
1865 printk("iadev: Non UBR, ABR and CBR traffic not supportedn");
1866
1867 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1868 IF_EVENT(printk("ia open_tx returning \n");)
1869 return 0;
1870}
1871
1872
1873static int tx_init(struct atm_dev *dev)
1874{
1875 IADEV *iadev;
1876 struct tx_buf_desc *buf_desc_ptr;
1877 unsigned int tx_pkt_start;
1878 void *dle_addr;
1879 int i;
1880 u_short tcq_st_adr;
1881 u_short *tcq_start;
1882 u_short prq_st_adr;
1883 u_short *prq_start;
1884 struct main_vc *vc;
1885 struct ext_vc *evc;
1886 u_short tmp16;
1887 u32 vcsize_sel;
1888
1889 iadev = INPH_IA_DEV(dev);
1890 spin_lock_init(&iadev->tx_lock);
1891
1892 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1893 readw(iadev->seg_reg+SEG_MASK_REG));)
1894
1895 /* Allocate 4k (boundary aligned) bytes */
1896 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1897 &iadev->tx_dle_dma);
1898 if (!dle_addr) {
1899 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1900 goto err_out;
1901 }
1902 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1903 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1904 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
1905 iadev->tx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1906
1907 /* write the upper 20 bits of the start address to tx list address register */
1908 writel(iadev->tx_dle_dma & 0xfffff000,
1909 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1910 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1911 writew(0, iadev->seg_reg+MODE_REG_0);
1912 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1913 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1914 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1915 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1916
1917 /*
1918 Transmit side control memory map
1919 --------------------------------
1920 Buffer descr 0x0000 (128 - 4K)
1921 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1922 (512 - 1K) each
1923 TCQ - 4K, PRQ - 5K
1924 CBR Table 0x1800 (as needed) - 6K
1925 UBR Table 0x3000 (1K - 4K) - 12K
1926 UBR Wait queue 0x4000 (1K - 4K) - 16K
1927 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1928 ABR Tbl - 20K, ABR Wq - 22K
1929 extended VC 0x6000 (1K - 8K) - 24K
1930 VC Table 0x8000 (1K - 32K) - 32K
1931
1932 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1933 and Wait q, which can be allotted later.
1934 */
1935
1936 /* Buffer Descriptor Table Base address */
1937 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1938
1939 /* initialize each entry in the buffer descriptor table */
1940 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1941 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1942 buf_desc_ptr++;
1943 tx_pkt_start = TX_PACKET_RAM;
1944 for(i=1; i<=iadev->num_tx_desc; i++)
1945 {
1946 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1947 buf_desc_ptr->desc_mode = AAL5;
1948 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1949 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1950 buf_desc_ptr++;
1951 tx_pkt_start += iadev->tx_buf_sz;
1952 }
1953 iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1954 if (!iadev->tx_buf) {
1955 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1956 goto err_free_dle;
1957 }
1958 for (i= 0; i< iadev->num_tx_desc; i++)
1959 {
1960 struct cpcs_trailer *cpcs;
1961
1962 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1963 if(!cpcs) {
1964 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1965 goto err_free_tx_bufs;
1966 }
1967 iadev->tx_buf[i].cpcs = cpcs;
1968 iadev->tx_buf[i].dma_addr = pci_map_single(iadev->pci,
1969 cpcs, sizeof(*cpcs), PCI_DMA_TODEVICE);
1970 }
1971 iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1972 sizeof(struct desc_tbl_t), GFP_KERNEL);
1973 if (!iadev->desc_tbl) {
1974 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1975 goto err_free_all_tx_bufs;
1976 }
1977
1978 /* Communication Queues base address */
1979 i = TX_COMP_Q * iadev->memSize;
1980 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
1981
1982 /* Transmit Complete Queue */
1983 writew(i, iadev->seg_reg+TCQ_ST_ADR);
1984 writew(i, iadev->seg_reg+TCQ_RD_PTR);
1985 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
1986 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
1987 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
1988 iadev->seg_reg+TCQ_ED_ADR);
1989 /* Fill the TCQ with all the free descriptors. */
1990 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
1991 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
1992 for(i=1; i<=iadev->num_tx_desc; i++)
1993 {
1994 *tcq_start = (u_short)i;
1995 tcq_start++;
1996 }
1997
1998 /* Packet Ready Queue */
1999 i = PKT_RDY_Q * iadev->memSize;
2000 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2001 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2002 iadev->seg_reg+PRQ_ED_ADR);
2003 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2004 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2005
2006 /* Load local copy of PRQ and TCQ ptrs */
2007 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2008 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2009 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2010
2011 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2012 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2013 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2014
2015 /* Just for safety initializing the queue to have desc 1 always */
2016 /* Fill the PRQ with all the free descriptors. */
2017 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2018 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2019 for(i=1; i<=iadev->num_tx_desc; i++)
2020 {
2021 *prq_start = (u_short)0; /* desc 1 in all entries */
2022 prq_start++;
2023 }
2024 /* CBR Table */
2025 IF_INIT(printk("Start CBR Init\n");)
2026#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2027 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2028#else /* Charlie's logic is wrong ? */
2029 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2030 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2031 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2032#endif
2033
2034 IF_INIT(printk("value in register = 0x%x\n",
2035 readw(iadev->seg_reg+CBR_PTR_BASE));)
2036 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2037 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2038 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2039 readw(iadev->seg_reg+CBR_TAB_BEG));)
2040 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2041 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2042 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
2043 IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n",
2044 iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
2045 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2046 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2047 readw(iadev->seg_reg+CBR_TAB_END+1));)
2048
2049 /* Initialize the CBR Schedualing Table */
2050 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2051 0, iadev->num_vc*6);
2052 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2053 iadev->CbrEntryPt = 0;
2054 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2055 iadev->NumEnabledCBR = 0;
2056
2057 /* UBR scheduling Table and wait queue */
2058 /* initialize all bytes of UBR scheduler table and wait queue to 0
2059 - SCHEDSZ is 1K (# of entries).
2060 - UBR Table size is 4K
2061 - UBR wait queue is 4K
2062 since the table and wait queues are contiguous, all the bytes
2063 can be initialized by one memeset.
2064 */
2065
2066 vcsize_sel = 0;
2067 i = 8*1024;
2068 while (i != iadev->num_vc) {
2069 i /= 2;
2070 vcsize_sel++;
2071 }
2072
2073 i = MAIN_VC_TABLE * iadev->memSize;
2074 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2075 i = EXT_VC_TABLE * iadev->memSize;
2076 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2077 i = UBR_SCHED_TABLE * iadev->memSize;
2078 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2079 i = UBR_WAIT_Q * iadev->memSize;
2080 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2081 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2082 0, iadev->num_vc*8);
2083 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2084 /* initialize all bytes of ABR scheduler table and wait queue to 0
2085 - SCHEDSZ is 1K (# of entries).
2086 - ABR Table size is 2K
2087 - ABR wait queue is 2K
2088 since the table and wait queues are contiguous, all the bytes
2089 can be initialized by one memeset.
2090 */
2091 i = ABR_SCHED_TABLE * iadev->memSize;
2092 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2093 i = ABR_WAIT_Q * iadev->memSize;
2094 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2095
2096 i = ABR_SCHED_TABLE*iadev->memSize;
2097 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2098 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2099 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2100 iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2101 if (!iadev->testTable) {
2102 printk("Get freepage failed\n");
2103 goto err_free_desc_tbl;
2104 }
2105 for(i=0; i<iadev->num_vc; i++)
2106 {
2107 memset((caddr_t)vc, 0, sizeof(*vc));
2108 memset((caddr_t)evc, 0, sizeof(*evc));
2109 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2110 GFP_KERNEL);
2111 if (!iadev->testTable[i])
2112 goto err_free_test_tables;
2113 iadev->testTable[i]->lastTime = 0;
2114 iadev->testTable[i]->fract = 0;
2115 iadev->testTable[i]->vc_status = VC_UBR;
2116 vc++;
2117 evc++;
2118 }
2119
2120 /* Other Initialization */
2121
2122 /* Max Rate Register */
2123 if (iadev->phy_type & FE_25MBIT_PHY) {
2124 writew(RATE25, iadev->seg_reg+MAXRATE);
2125 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2126 }
2127 else {
2128 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2129 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2130 }
2131 /* Set Idle Header Reigisters to be sure */
2132 writew(0, iadev->seg_reg+IDLEHEADHI);
2133 writew(0, iadev->seg_reg+IDLEHEADLO);
2134
2135 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2136 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2137
2138 iadev->close_pending = 0;
2139 init_waitqueue_head(&iadev->close_wait);
2140 init_waitqueue_head(&iadev->timeout_wait);
2141 skb_queue_head_init(&iadev->tx_dma_q);
2142 ia_init_rtn_q(&iadev->tx_return_q);
2143
2144 /* RM Cell Protocol ID and Message Type */
2145 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2146 skb_queue_head_init (&iadev->tx_backlog);
2147
2148 /* Mode Register 1 */
2149 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2150
2151 /* Mode Register 0 */
2152 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2153
2154 /* Interrupt Status Register - read to clear */
2155 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2156
2157 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2158 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2159 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2160 iadev->tx_pkt_cnt = 0;
2161 iadev->rate_limit = iadev->LineRate / 3;
2162
2163 return 0;
2164
2165err_free_test_tables:
2166 while (--i >= 0)
2167 kfree(iadev->testTable[i]);
2168 kfree(iadev->testTable);
2169err_free_desc_tbl:
2170 kfree(iadev->desc_tbl);
2171err_free_all_tx_bufs:
2172 i = iadev->num_tx_desc;
2173err_free_tx_bufs:
2174 while (--i >= 0) {
2175 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2176
2177 pci_unmap_single(iadev->pci, desc->dma_addr,
2178 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2179 kfree(desc->cpcs);
2180 }
2181 kfree(iadev->tx_buf);
2182err_free_dle:
2183 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2184 iadev->tx_dle_dma);
2185err_out:
2186 return -ENOMEM;
2187}
2188
2189static irqreturn_t ia_int(int irq, void *dev_id)
2190{
2191 struct atm_dev *dev;
2192 IADEV *iadev;
2193 unsigned int status;
2194 int handled = 0;
2195
2196 dev = dev_id;
2197 iadev = INPH_IA_DEV(dev);
2198 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2199 {
2200 handled = 1;
2201 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2202 if (status & STAT_REASSINT)
2203 {
2204 /* do something */
2205 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2206 rx_intr(dev);
2207 }
2208 if (status & STAT_DLERINT)
2209 {
2210 /* Clear this bit by writing a 1 to it. */
2211 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
2212 rx_dle_intr(dev);
2213 }
2214 if (status & STAT_SEGINT)
2215 {
2216 /* do something */
2217 IF_EVENT(printk("IA: tx_intr \n");)
2218 tx_intr(dev);
2219 }
2220 if (status & STAT_DLETINT)
2221 {
2222 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;
2223 tx_dle_intr(dev);
2224 }
2225 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2226 {
2227 if (status & STAT_FEINT)
2228 IaFrontEndIntr(iadev);
2229 }
2230 }
2231 return IRQ_RETVAL(handled);
2232}
2233
2234
2235
2236/*----------------------------- entries --------------------------------*/
2237static int get_esi(struct atm_dev *dev)
2238{
2239 IADEV *iadev;
2240 int i;
2241 u32 mac1;
2242 u16 mac2;
2243
2244 iadev = INPH_IA_DEV(dev);
2245 mac1 = cpu_to_be32(le32_to_cpu(readl(
2246 iadev->reg+IPHASE5575_MAC1)));
2247 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2248 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2249 for (i=0; i<MAC1_LEN; i++)
2250 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2251
2252 for (i=0; i<MAC2_LEN; i++)
2253 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2254 return 0;
2255}
2256
2257static int reset_sar(struct atm_dev *dev)
2258{
2259 IADEV *iadev;
2260 int i, error = 1;
2261 unsigned int pci[64];
2262
2263 iadev = INPH_IA_DEV(dev);
2264 for(i=0; i<64; i++)
2265 if ((error = pci_read_config_dword(iadev->pci,
2266 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2267 return error;
2268 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2269 for(i=0; i<64; i++)
2270 if ((error = pci_write_config_dword(iadev->pci,
2271 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2272 return error;
2273 udelay(5);
2274 return 0;
2275}
2276
2277
2278static int __devinit ia_init(struct atm_dev *dev)
2279{
2280 IADEV *iadev;
2281 unsigned long real_base;
2282 void __iomem *base;
2283 unsigned short command;
2284 int error, i;
2285
2286 /* The device has been identified and registered. Now we read
2287 necessary configuration info like memory base address,
2288 interrupt number etc */
2289
2290 IF_INIT(printk(">ia_init\n");)
2291 dev->ci_range.vpi_bits = 0;
2292 dev->ci_range.vci_bits = NR_VCI_LD;
2293
2294 iadev = INPH_IA_DEV(dev);
2295 real_base = pci_resource_start (iadev->pci, 0);
2296 iadev->irq = iadev->pci->irq;
2297
2298 error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2299 if (error) {
2300 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2301 dev->number,error);
2302 return -EINVAL;
2303 }
2304 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
2305 dev->number, iadev->pci->revision, real_base, iadev->irq);)
2306
2307 /* find mapping size of board */
2308
2309 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2310
2311 if (iadev->pci_map_size == 0x100000){
2312 iadev->num_vc = 4096;
2313 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2314 iadev->memSize = 4;
2315 }
2316 else if (iadev->pci_map_size == 0x40000) {
2317 iadev->num_vc = 1024;
2318 iadev->memSize = 1;
2319 }
2320 else {
2321 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2322 return -EINVAL;
2323 }
2324 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2325
2326 /* enable bus mastering */
2327 pci_set_master(iadev->pci);
2328
2329 /*
2330 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2331 */
2332 udelay(10);
2333
2334 /* mapping the physical address to a virtual address in address space */
2335 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2336
2337 if (!base)
2338 {
2339 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2340 dev->number);
2341 return error;
2342 }
2343 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
2344 dev->number, iadev->pci->revision, base, iadev->irq);)
2345
2346 /* filling the iphase dev structure */
2347 iadev->mem = iadev->pci_map_size /2;
2348 iadev->real_base = real_base;
2349 iadev->base = base;
2350
2351 /* Bus Interface Control Registers */
2352 iadev->reg = base + REG_BASE;
2353 /* Segmentation Control Registers */
2354 iadev->seg_reg = base + SEG_BASE;
2355 /* Reassembly Control Registers */
2356 iadev->reass_reg = base + REASS_BASE;
2357 /* Front end/ DMA control registers */
2358 iadev->phy = base + PHY_BASE;
2359 iadev->dma = base + PHY_BASE;
2360 /* RAM - Segmentation RAm and Reassembly RAM */
2361 iadev->ram = base + ACTUAL_RAM_BASE;
2362 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2363 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2364
2365 /* lets print out the above */
2366 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2367 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2368 iadev->phy, iadev->ram, iadev->seg_ram,
2369 iadev->reass_ram);)
2370
2371 /* lets try reading the MAC address */
2372 error = get_esi(dev);
2373 if (error) {
2374 iounmap(iadev->base);
2375 return error;
2376 }
2377 printk("IA: ");
2378 for (i=0; i < ESI_LEN; i++)
2379 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2380 printk("\n");
2381
2382 /* reset SAR */
2383 if (reset_sar(dev)) {
2384 iounmap(iadev->base);
2385 printk("IA: reset SAR fail, please try again\n");
2386 return 1;
2387 }
2388 return 0;
2389}
2390
2391static void ia_update_stats(IADEV *iadev) {
2392 if (!iadev->carrier_detect)
2393 return;
2394 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2395 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2396 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2397 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2398 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2399 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2400 return;
2401}
2402
2403static void ia_led_timer(unsigned long arg) {
2404 unsigned long flags;
2405 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2406 u_char i;
2407 static u32 ctrl_reg;
2408 for (i = 0; i < iadev_count; i++) {
2409 if (ia_dev[i]) {
2410 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2411 if (blinking[i] == 0) {
2412 blinking[i]++;
2413 ctrl_reg &= (~CTRL_LED);
2414 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2415 ia_update_stats(ia_dev[i]);
2416 }
2417 else {
2418 blinking[i] = 0;
2419 ctrl_reg |= CTRL_LED;
2420 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2421 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2422 if (ia_dev[i]->close_pending)
2423 wake_up(&ia_dev[i]->close_wait);
2424 ia_tx_poll(ia_dev[i]);
2425 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2426 }
2427 }
2428 }
2429 mod_timer(&ia_timer, jiffies + HZ / 4);
2430 return;
2431}
2432
2433static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2434 unsigned long addr)
2435{
2436 writel(value, INPH_IA_DEV(dev)->phy+addr);
2437}
2438
2439static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2440{
2441 return readl(INPH_IA_DEV(dev)->phy+addr);
2442}
2443
2444static void ia_free_tx(IADEV *iadev)
2445{
2446 int i;
2447
2448 kfree(iadev->desc_tbl);
2449 for (i = 0; i < iadev->num_vc; i++)
2450 kfree(iadev->testTable[i]);
2451 kfree(iadev->testTable);
2452 for (i = 0; i < iadev->num_tx_desc; i++) {
2453 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2454
2455 pci_unmap_single(iadev->pci, desc->dma_addr,
2456 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2457 kfree(desc->cpcs);
2458 }
2459 kfree(iadev->tx_buf);
2460 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2461 iadev->tx_dle_dma);
2462}
2463
2464static void ia_free_rx(IADEV *iadev)
2465{
2466 kfree(iadev->rx_open);
2467 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2468 iadev->rx_dle_dma);
2469}
2470
2471static int __devinit ia_start(struct atm_dev *dev)
2472{
2473 IADEV *iadev;
2474 int error;
2475 unsigned char phy;
2476 u32 ctrl_reg;
2477 IF_EVENT(printk(">ia_start\n");)
2478 iadev = INPH_IA_DEV(dev);
2479 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
2480 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2481 dev->number, iadev->irq);
2482 error = -EAGAIN;
2483 goto err_out;
2484 }
2485 /* @@@ should release IRQ on error */
2486 /* enabling memory + master */
2487 if ((error = pci_write_config_word(iadev->pci,
2488 PCI_COMMAND,
2489 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2490 {
2491 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2492 "master (0x%x)\n",dev->number, error);
2493 error = -EIO;
2494 goto err_free_irq;
2495 }
2496 udelay(10);
2497
2498 /* Maybe we should reset the front end, initialize Bus Interface Control
2499 Registers and see. */
2500
2501 IF_INIT(printk("Bus ctrl reg: %08x\n",
2502 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2503 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2504 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2505 | CTRL_B8
2506 | CTRL_B16
2507 | CTRL_B32
2508 | CTRL_B48
2509 | CTRL_B64
2510 | CTRL_B128
2511 | CTRL_ERRMASK
2512 | CTRL_DLETMASK /* shud be removed l8r */
2513 | CTRL_DLERMASK
2514 | CTRL_SEGMASK
2515 | CTRL_REASSMASK
2516 | CTRL_FEMASK
2517 | CTRL_CSPREEMPT;
2518
2519 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2520
2521 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2522 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2523 printk("Bus status reg after init: %08x\n",
2524 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2525
2526 ia_hw_type(iadev);
2527 error = tx_init(dev);
2528 if (error)
2529 goto err_free_irq;
2530 error = rx_init(dev);
2531 if (error)
2532 goto err_free_tx;
2533
2534 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2535 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2536 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2537 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2538 phy = 0; /* resolve compiler complaint */
2539 IF_INIT (
2540 if ((phy=ia_phy_get(dev,0)) == 0x30)
2541 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2542 else
2543 printk("IA: utopia,rev.%0x\n",phy);)
2544
2545 if (iadev->phy_type & FE_25MBIT_PHY)
2546 ia_mb25_init(iadev);
2547 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2548 ia_suni_pm7345_init(iadev);
2549 else {
2550 error = suni_init(dev);
2551 if (error)
2552 goto err_free_rx;
2553 if (dev->phy->start) {
2554 error = dev->phy->start(dev);
2555 if (error)
2556 goto err_free_rx;
2557 }
2558 /* Get iadev->carrier_detect status */
2559 IaFrontEndIntr(iadev);
2560 }
2561 return 0;
2562
2563err_free_rx:
2564 ia_free_rx(iadev);
2565err_free_tx:
2566 ia_free_tx(iadev);
2567err_free_irq:
2568 free_irq(iadev->irq, dev);
2569err_out:
2570 return error;
2571}
2572
2573static void ia_close(struct atm_vcc *vcc)
2574{
2575 DEFINE_WAIT(wait);
2576 u16 *vc_table;
2577 IADEV *iadev;
2578 struct ia_vcc *ia_vcc;
2579 struct sk_buff *skb = NULL;
2580 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2581 unsigned long closetime, flags;
2582
2583 iadev = INPH_IA_DEV(vcc->dev);
2584 ia_vcc = INPH_IA_VCC(vcc);
2585 if (!ia_vcc) return;
2586
2587 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2588 ia_vcc->vc_desc_cnt,vcc->vci);)
2589 clear_bit(ATM_VF_READY,&vcc->flags);
2590 skb_queue_head_init (&tmp_tx_backlog);
2591 skb_queue_head_init (&tmp_vcc_backlog);
2592 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2593 iadev->close_pending++;
2594 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2595 schedule_timeout(50);
2596 finish_wait(&iadev->timeout_wait, &wait);
2597 spin_lock_irqsave(&iadev->tx_lock, flags);
2598 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2599 if (ATM_SKB(skb)->vcc == vcc){
2600 if (vcc->pop) vcc->pop(vcc, skb);
2601 else dev_kfree_skb_any(skb);
2602 }
2603 else
2604 skb_queue_tail(&tmp_tx_backlog, skb);
2605 }
2606 while((skb = skb_dequeue(&tmp_tx_backlog)))
2607 skb_queue_tail(&iadev->tx_backlog, skb);
2608 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2609 closetime = 300000 / ia_vcc->pcr;
2610 if (closetime == 0)
2611 closetime = 1;
2612 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2613 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2614 spin_lock_irqsave(&iadev->tx_lock, flags);
2615 iadev->close_pending--;
2616 iadev->testTable[vcc->vci]->lastTime = 0;
2617 iadev->testTable[vcc->vci]->fract = 0;
2618 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2619 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2620 if (vcc->qos.txtp.min_pcr > 0)
2621 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2622 }
2623 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2624 ia_vcc = INPH_IA_VCC(vcc);
2625 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2626 ia_cbrVc_close (vcc);
2627 }
2628 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2629 }
2630
2631 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2632 // reset reass table
2633 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2634 vc_table += vcc->vci;
2635 *vc_table = NO_AAL5_PKT;
2636 // reset vc table
2637 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2638 vc_table += vcc->vci;
2639 *vc_table = (vcc->vci << 6) | 15;
2640 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2641 struct abr_vc_table __iomem *abr_vc_table =
2642 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2643 abr_vc_table += vcc->vci;
2644 abr_vc_table->rdf = 0x0003;
2645 abr_vc_table->air = 0x5eb1;
2646 }
2647 // Drain the packets
2648 rx_dle_intr(vcc->dev);
2649 iadev->rx_open[vcc->vci] = NULL;
2650 }
2651 kfree(INPH_IA_VCC(vcc));
2652 ia_vcc = NULL;
2653 vcc->dev_data = NULL;
2654 clear_bit(ATM_VF_ADDR,&vcc->flags);
2655 return;
2656}
2657
2658static int ia_open(struct atm_vcc *vcc)
2659{
2660 struct ia_vcc *ia_vcc;
2661 int error;
2662 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2663 {
2664 IF_EVENT(printk("ia: not partially allocated resources\n");)
2665 vcc->dev_data = NULL;
2666 }
2667 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2668 {
2669 IF_EVENT(printk("iphase open: unspec part\n");)
2670 set_bit(ATM_VF_ADDR,&vcc->flags);
2671 }
2672 if (vcc->qos.aal != ATM_AAL5)
2673 return -EINVAL;
2674 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2675 vcc->dev->number, vcc->vpi, vcc->vci);)
2676
2677 /* Device dependent initialization */
2678 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2679 if (!ia_vcc) return -ENOMEM;
2680 vcc->dev_data = ia_vcc;
2681
2682 if ((error = open_rx(vcc)))
2683 {
2684 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2685 ia_close(vcc);
2686 return error;
2687 }
2688
2689 if ((error = open_tx(vcc)))
2690 {
2691 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2692 ia_close(vcc);
2693 return error;
2694 }
2695
2696 set_bit(ATM_VF_READY,&vcc->flags);
2697
2698#if 0
2699 {
2700 static u8 first = 1;
2701 if (first) {
2702 ia_timer.expires = jiffies + 3*HZ;
2703 add_timer(&ia_timer);
2704 first = 0;
2705 }
2706 }
2707#endif
2708 IF_EVENT(printk("ia open returning\n");)
2709 return 0;
2710}
2711
2712static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2713{
2714 IF_EVENT(printk(">ia_change_qos\n");)
2715 return 0;
2716}
2717
2718static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2719{
2720 IA_CMDBUF ia_cmds;
2721 IADEV *iadev;
2722 int i, board;
2723 u16 __user *tmps;
2724 IF_EVENT(printk(">ia_ioctl\n");)
2725 if (cmd != IA_CMD) {
2726 if (!dev->phy->ioctl) return -EINVAL;
2727 return dev->phy->ioctl(dev,cmd,arg);
2728 }
2729 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2730 board = ia_cmds.status;
2731 if ((board < 0) || (board > iadev_count))
2732 board = 0;
2733 iadev = ia_dev[board];
2734 switch (ia_cmds.cmd) {
2735 case MEMDUMP:
2736 {
2737 switch (ia_cmds.sub_cmd) {
2738 case MEMDUMP_DEV:
2739 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2740 if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2741 return -EFAULT;
2742 ia_cmds.status = 0;
2743 break;
2744 case MEMDUMP_SEGREG:
2745 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2746 tmps = (u16 __user *)ia_cmds.buf;
2747 for(i=0; i<0x80; i+=2, tmps++)
2748 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2749 ia_cmds.status = 0;
2750 ia_cmds.len = 0x80;
2751 break;
2752 case MEMDUMP_REASSREG:
2753 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2754 tmps = (u16 __user *)ia_cmds.buf;
2755 for(i=0; i<0x80; i+=2, tmps++)
2756 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2757 ia_cmds.status = 0;
2758 ia_cmds.len = 0x80;
2759 break;
2760 case MEMDUMP_FFL:
2761 {
2762 ia_regs_t *regs_local;
2763 ffredn_t *ffL;
2764 rfredn_t *rfL;
2765
2766 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2767 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2768 if (!regs_local) return -ENOMEM;
2769 ffL = ®s_local->ffredn;
2770 rfL = ®s_local->rfredn;
2771 /* Copy real rfred registers into the local copy */
2772 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2773 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2774 /* Copy real ffred registers into the local copy */
2775 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2776 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2777
2778 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2779 kfree(regs_local);
2780 return -EFAULT;
2781 }
2782 kfree(regs_local);
2783 printk("Board %d registers dumped\n", board);
2784 ia_cmds.status = 0;
2785 }
2786 break;
2787 case READ_REG:
2788 {
2789 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2790 desc_dbg(iadev);
2791 ia_cmds.status = 0;
2792 }
2793 break;
2794 case 0x6:
2795 {
2796 ia_cmds.status = 0;
2797 printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2798 printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2799 }
2800 break;
2801 case 0x8:
2802 {
2803 struct k_sonet_stats *stats;
2804 stats = &PRIV(_ia_dev[board])->sonet_stats;
2805 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2806 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2807 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2808 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2809 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2810 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2811 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2812 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2813 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2814 }
2815 ia_cmds.status = 0;
2816 break;
2817 case 0x9:
2818 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2819 for (i = 1; i <= iadev->num_rx_desc; i++)
2820 free_desc(_ia_dev[board], i);
2821 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2822 iadev->reass_reg+REASS_MASK_REG);
2823 iadev->rxing = 1;
2824
2825 ia_cmds.status = 0;
2826 break;
2827
2828 case 0xb:
2829 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2830 IaFrontEndIntr(iadev);
2831 break;
2832 case 0xa:
2833 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2834 {
2835 ia_cmds.status = 0;
2836 IADebugFlag = ia_cmds.maddr;
2837 printk("New debug option loaded\n");
2838 }
2839 break;
2840 default:
2841 ia_cmds.status = 0;
2842 break;
2843 }
2844 }
2845 break;
2846 default:
2847 break;
2848
2849 }
2850 return 0;
2851}
2852
2853static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2854 void __user *optval, int optlen)
2855{
2856 IF_EVENT(printk(">ia_getsockopt\n");)
2857 return -EINVAL;
2858}
2859
2860static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
2861 void __user *optval, unsigned int optlen)
2862{
2863 IF_EVENT(printk(">ia_setsockopt\n");)
2864 return -EINVAL;
2865}
2866
2867static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2868 IADEV *iadev;
2869 struct dle *wr_ptr;
2870 struct tx_buf_desc __iomem *buf_desc_ptr;
2871 int desc;
2872 int comp_code;
2873 int total_len;
2874 struct cpcs_trailer *trailer;
2875 struct ia_vcc *iavcc;
2876
2877 iadev = INPH_IA_DEV(vcc->dev);
2878 iavcc = INPH_IA_VCC(vcc);
2879 if (!iavcc->txing) {
2880 printk("discard packet on closed VC\n");
2881 if (vcc->pop)
2882 vcc->pop(vcc, skb);
2883 else
2884 dev_kfree_skb_any(skb);
2885 return 0;
2886 }
2887
2888 if (skb->len > iadev->tx_buf_sz - 8) {
2889 printk("Transmit size over tx buffer size\n");
2890 if (vcc->pop)
2891 vcc->pop(vcc, skb);
2892 else
2893 dev_kfree_skb_any(skb);
2894 return 0;
2895 }
2896 if ((unsigned long)skb->data & 3) {
2897 printk("Misaligned SKB\n");
2898 if (vcc->pop)
2899 vcc->pop(vcc, skb);
2900 else
2901 dev_kfree_skb_any(skb);
2902 return 0;
2903 }
2904 /* Get a descriptor number from our free descriptor queue
2905 We get the descr number from the TCQ now, since I am using
2906 the TCQ as a free buffer queue. Initially TCQ will be
2907 initialized with all the descriptors and is hence, full.
2908 */
2909 desc = get_desc (iadev, iavcc);
2910 if (desc == 0xffff)
2911 return 1;
2912 comp_code = desc >> 13;
2913 desc &= 0x1fff;
2914
2915 if ((desc == 0) || (desc > iadev->num_tx_desc))
2916 {
2917 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2918 atomic_inc(&vcc->stats->tx);
2919 if (vcc->pop)
2920 vcc->pop(vcc, skb);
2921 else
2922 dev_kfree_skb_any(skb);
2923 return 0; /* return SUCCESS */
2924 }
2925
2926 if (comp_code)
2927 {
2928 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2929 desc, comp_code);)
2930 }
2931
2932 /* remember the desc and vcc mapping */
2933 iavcc->vc_desc_cnt++;
2934 iadev->desc_tbl[desc-1].iavcc = iavcc;
2935 iadev->desc_tbl[desc-1].txskb = skb;
2936 IA_SKB_STATE(skb) = 0;
2937
2938 iadev->ffL.tcq_rd += 2;
2939 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2940 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2941 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2942
2943 /* Put the descriptor number in the packet ready queue
2944 and put the updated write pointer in the DLE field
2945 */
2946 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2947
2948 iadev->ffL.prq_wr += 2;
2949 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2950 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2951
2952 /* Figure out the exact length of the packet and padding required to
2953 make it aligned on a 48 byte boundary. */
2954 total_len = skb->len + sizeof(struct cpcs_trailer);
2955 total_len = ((total_len + 47) / 48) * 48;
2956 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2957
2958 /* Put the packet in a tx buffer */
2959 trailer = iadev->tx_buf[desc-1].cpcs;
2960 IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n",
2961 skb, skb->data, skb->len, desc);)
2962 trailer->control = 0;
2963 /*big endian*/
2964 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2965 trailer->crc32 = 0; /* not needed - dummy bytes */
2966
2967 /* Display the packet */
2968 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2969 skb->len, tcnter++);
2970 xdump(skb->data, skb->len, "TX: ");
2971 printk("\n");)
2972
2973 /* Build the buffer descriptor */
2974 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
2975 buf_desc_ptr += desc; /* points to the corresponding entry */
2976 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
2977 /* Huh ? p.115 of users guide describes this as a read-only register */
2978 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2979 buf_desc_ptr->vc_index = vcc->vci;
2980 buf_desc_ptr->bytes = total_len;
2981
2982 if (vcc->qos.txtp.traffic_class == ATM_ABR)
2983 clear_lockup (vcc, iadev);
2984
2985 /* Build the DLE structure */
2986 wr_ptr = iadev->tx_dle_q.write;
2987 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
2988 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
2989 skb->len, PCI_DMA_TODEVICE);
2990 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
2991 buf_desc_ptr->buf_start_lo;
2992 /* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
2993 wr_ptr->bytes = skb->len;
2994
2995 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
2996 if ((wr_ptr->bytes >> 2) == 0xb)
2997 wr_ptr->bytes = 0x30;
2998
2999 wr_ptr->mode = TX_DLE_PSI;
3000 wr_ptr->prq_wr_ptr_data = 0;
3001
3002 /* end is not to be used for the DLE q */
3003 if (++wr_ptr == iadev->tx_dle_q.end)
3004 wr_ptr = iadev->tx_dle_q.start;
3005
3006 /* Build trailer dle */
3007 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3008 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3009 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3010
3011 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3012 wr_ptr->mode = DMA_INT_ENABLE;
3013 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3014
3015 /* end is not to be used for the DLE q */
3016 if (++wr_ptr == iadev->tx_dle_q.end)
3017 wr_ptr = iadev->tx_dle_q.start;
3018
3019 iadev->tx_dle_q.write = wr_ptr;
3020 ATM_DESC(skb) = vcc->vci;
3021 skb_queue_tail(&iadev->tx_dma_q, skb);
3022
3023 atomic_inc(&vcc->stats->tx);
3024 iadev->tx_pkt_cnt++;
3025 /* Increment transaction counter */
3026 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3027
3028#if 0
3029 /* add flow control logic */
3030 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3031 if (iavcc->vc_desc_cnt > 10) {
3032 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3033 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3034 iavcc->flow_inc = -1;
3035 iavcc->saved_tx_quota = vcc->tx_quota;
3036 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3037 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3038 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3039 iavcc->flow_inc = 0;
3040 }
3041 }
3042#endif
3043 IF_TX(printk("ia send done\n");)
3044 return 0;
3045}
3046
3047static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3048{
3049 IADEV *iadev;
3050 unsigned long flags;
3051
3052 iadev = INPH_IA_DEV(vcc->dev);
3053 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3054 {
3055 if (!skb)
3056 printk(KERN_CRIT "null skb in ia_send\n");
3057 else dev_kfree_skb_any(skb);
3058 return -EINVAL;
3059 }
3060 spin_lock_irqsave(&iadev->tx_lock, flags);
3061 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3062 dev_kfree_skb_any(skb);
3063 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3064 return -EINVAL;
3065 }
3066 ATM_SKB(skb)->vcc = vcc;
3067
3068 if (skb_peek(&iadev->tx_backlog)) {
3069 skb_queue_tail(&iadev->tx_backlog, skb);
3070 }
3071 else {
3072 if (ia_pkt_tx (vcc, skb)) {
3073 skb_queue_tail(&iadev->tx_backlog, skb);
3074 }
3075 }
3076 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3077 return 0;
3078
3079}
3080
3081static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3082{
3083 int left = *pos, n;
3084 char *tmpPtr;
3085 IADEV *iadev = INPH_IA_DEV(dev);
3086 if(!left--) {
3087 if (iadev->phy_type == FE_25MBIT_PHY) {
3088 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3089 return n;
3090 }
3091 if (iadev->phy_type == FE_DS3_PHY)
3092 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3093 else if (iadev->phy_type == FE_E3_PHY)
3094 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3095 else if (iadev->phy_type == FE_UTP_OPTION)
3096 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3097 else
3098 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3099 tmpPtr = page + n;
3100 if (iadev->pci_map_size == 0x40000)
3101 n += sprintf(tmpPtr, "-1KVC-");
3102 else
3103 n += sprintf(tmpPtr, "-4KVC-");
3104 tmpPtr = page + n;
3105 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3106 n += sprintf(tmpPtr, "1M \n");
3107 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3108 n += sprintf(tmpPtr, "512K\n");
3109 else
3110 n += sprintf(tmpPtr, "128K\n");
3111 return n;
3112 }
3113 if (!left) {
3114 return sprintf(page, " Number of Tx Buffer: %u\n"
3115 " Size of Tx Buffer : %u\n"
3116 " Number of Rx Buffer: %u\n"
3117 " Size of Rx Buffer : %u\n"
3118 " Packets Receiverd : %u\n"
3119 " Packets Transmitted: %u\n"
3120 " Cells Received : %u\n"
3121 " Cells Transmitted : %u\n"
3122 " Board Dropped Cells: %u\n"
3123 " Board Dropped Pkts : %u\n",
3124 iadev->num_tx_desc, iadev->tx_buf_sz,
3125 iadev->num_rx_desc, iadev->rx_buf_sz,
3126 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3127 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3128 iadev->drop_rxcell, iadev->drop_rxpkt);
3129 }
3130 return 0;
3131}
3132
3133static const struct atmdev_ops ops = {
3134 .open = ia_open,
3135 .close = ia_close,
3136 .ioctl = ia_ioctl,
3137 .getsockopt = ia_getsockopt,
3138 .setsockopt = ia_setsockopt,
3139 .send = ia_send,
3140 .phy_put = ia_phy_put,
3141 .phy_get = ia_phy_get,
3142 .change_qos = ia_change_qos,
3143 .proc_read = ia_proc_read,
3144 .owner = THIS_MODULE,
3145};
3146
3147static int __devinit ia_init_one(struct pci_dev *pdev,
3148 const struct pci_device_id *ent)
3149{
3150 struct atm_dev *dev;
3151 IADEV *iadev;
3152 int ret;
3153
3154 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
3155 if (!iadev) {
3156 ret = -ENOMEM;
3157 goto err_out;
3158 }
3159
3160 iadev->pci = pdev;
3161
3162 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3163 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3164 if (pci_enable_device(pdev)) {
3165 ret = -ENODEV;
3166 goto err_out_free_iadev;
3167 }
3168 dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1, NULL);
3169 if (!dev) {
3170 ret = -ENOMEM;
3171 goto err_out_disable_dev;
3172 }
3173 dev->dev_data = iadev;
3174 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
3175 IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n", dev,
3176 iadev->LineRate);)
3177
3178 pci_set_drvdata(pdev, dev);
3179
3180 ia_dev[iadev_count] = iadev;
3181 _ia_dev[iadev_count] = dev;
3182 iadev_count++;
3183 if (ia_init(dev) || ia_start(dev)) {
3184 IF_INIT(printk("IA register failed!\n");)
3185 iadev_count--;
3186 ia_dev[iadev_count] = NULL;
3187 _ia_dev[iadev_count] = NULL;
3188 ret = -EINVAL;
3189 goto err_out_deregister_dev;
3190 }
3191 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3192
3193 iadev->next_board = ia_boards;
3194 ia_boards = dev;
3195
3196 return 0;
3197
3198err_out_deregister_dev:
3199 atm_dev_deregister(dev);
3200err_out_disable_dev:
3201 pci_disable_device(pdev);
3202err_out_free_iadev:
3203 kfree(iadev);
3204err_out:
3205 return ret;
3206}
3207
3208static void __devexit ia_remove_one(struct pci_dev *pdev)
3209{
3210 struct atm_dev *dev = pci_get_drvdata(pdev);
3211 IADEV *iadev = INPH_IA_DEV(dev);
3212
3213 /* Disable phy interrupts */
3214 ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
3215 SUNI_RSOP_CIE);
3216 udelay(1);
3217
3218 if (dev->phy && dev->phy->stop)
3219 dev->phy->stop(dev);
3220
3221 /* De-register device */
3222 free_irq(iadev->irq, dev);
3223 iadev_count--;
3224 ia_dev[iadev_count] = NULL;
3225 _ia_dev[iadev_count] = NULL;
3226 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3227 atm_dev_deregister(dev);
3228
3229 iounmap(iadev->base);
3230 pci_disable_device(pdev);
3231
3232 ia_free_rx(iadev);
3233 ia_free_tx(iadev);
3234
3235 kfree(iadev);
3236}
3237
3238static struct pci_device_id ia_pci_tbl[] = {
3239 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3240 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3241 { 0,}
3242};
3243MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3244
3245static struct pci_driver ia_driver = {
3246 .name = DEV_LABEL,
3247 .id_table = ia_pci_tbl,
3248 .probe = ia_init_one,
3249 .remove = __devexit_p(ia_remove_one),
3250};
3251
3252static int __init ia_module_init(void)
3253{
3254 int ret;
3255
3256 ret = pci_register_driver(&ia_driver);
3257 if (ret >= 0) {
3258 ia_timer.expires = jiffies + 3*HZ;
3259 add_timer(&ia_timer);
3260 } else
3261 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3262 return ret;
3263}
3264
3265static void __exit ia_module_exit(void)
3266{
3267 pci_unregister_driver(&ia_driver);
3268
3269 del_timer(&ia_timer);
3270}
3271
3272module_init(ia_module_init);
3273module_exit(ia_module_exit);
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/interrupt.h>
57#include <linux/wait.h>
58#include <linux/slab.h>
59#include <asm/io.h>
60#include <linux/atomic.h>
61#include <asm/uaccess.h>
62#include <asm/string.h>
63#include <asm/byteorder.h>
64#include <linux/vmalloc.h>
65#include <linux/jiffies.h>
66#include "iphase.h"
67#include "suni.h"
68#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
69
70#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
71
72static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
73static void desc_dbg(IADEV *iadev);
74
75static IADEV *ia_dev[8];
76static struct atm_dev *_ia_dev[8];
77static int iadev_count;
78static void ia_led_timer(unsigned long arg);
79static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
80static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
81static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
82static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
83 |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
84
85module_param(IA_TX_BUF, int, 0);
86module_param(IA_TX_BUF_SZ, int, 0);
87module_param(IA_RX_BUF, int, 0);
88module_param(IA_RX_BUF_SZ, int, 0);
89module_param(IADebugFlag, uint, 0644);
90
91MODULE_LICENSE("GPL");
92
93/**************************** IA_LIB **********************************/
94
95static void ia_init_rtn_q (IARTN_Q *que)
96{
97 que->next = NULL;
98 que->tail = NULL;
99}
100
101static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
102{
103 data->next = NULL;
104 if (que->next == NULL)
105 que->next = que->tail = data;
106 else {
107 data->next = que->next;
108 que->next = data;
109 }
110 return;
111}
112
113static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
114 IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
115 if (!entry)
116 return -ENOMEM;
117 entry->data = data;
118 entry->next = NULL;
119 if (que->next == NULL)
120 que->next = que->tail = entry;
121 else {
122 que->tail->next = entry;
123 que->tail = que->tail->next;
124 }
125 return 1;
126}
127
128static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
129 IARTN_Q *tmpdata;
130 if (que->next == NULL)
131 return NULL;
132 tmpdata = que->next;
133 if ( que->next == que->tail)
134 que->next = que->tail = NULL;
135 else
136 que->next = que->next->next;
137 return tmpdata;
138}
139
140static void ia_hack_tcq(IADEV *dev) {
141
142 u_short desc1;
143 u_short tcq_wr;
144 struct ia_vcc *iavcc_r = NULL;
145
146 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
147 while (dev->host_tcq_wr != tcq_wr) {
148 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
149 if (!desc1) ;
150 else if (!dev->desc_tbl[desc1 -1].timestamp) {
151 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
152 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
153 }
154 else if (dev->desc_tbl[desc1 -1].timestamp) {
155 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
156 printk("IA: Fatal err in get_desc\n");
157 continue;
158 }
159 iavcc_r->vc_desc_cnt--;
160 dev->desc_tbl[desc1 -1].timestamp = 0;
161 IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n",
162 dev->desc_tbl[desc1 -1].txskb, desc1);)
163 if (iavcc_r->pcr < dev->rate_limit) {
164 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
165 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
166 printk("ia_hack_tcq: No memory available\n");
167 }
168 dev->desc_tbl[desc1 -1].iavcc = NULL;
169 dev->desc_tbl[desc1 -1].txskb = NULL;
170 }
171 dev->host_tcq_wr += 2;
172 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
173 dev->host_tcq_wr = dev->ffL.tcq_st;
174 }
175} /* ia_hack_tcq */
176
177static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
178 u_short desc_num, i;
179 struct sk_buff *skb;
180 struct ia_vcc *iavcc_r = NULL;
181 unsigned long delta;
182 static unsigned long timer = 0;
183 int ltimeout;
184
185 ia_hack_tcq (dev);
186 if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
187 timer = jiffies;
188 i=0;
189 while (i < dev->num_tx_desc) {
190 if (!dev->desc_tbl[i].timestamp) {
191 i++;
192 continue;
193 }
194 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
195 delta = jiffies - dev->desc_tbl[i].timestamp;
196 if (delta >= ltimeout) {
197 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
198 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
199 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
200 else
201 dev->ffL.tcq_rd -= 2;
202 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
203 if (!(skb = dev->desc_tbl[i].txskb) ||
204 !(iavcc_r = dev->desc_tbl[i].iavcc))
205 printk("Fatal err, desc table vcc or skb is NULL\n");
206 else
207 iavcc_r->vc_desc_cnt--;
208 dev->desc_tbl[i].timestamp = 0;
209 dev->desc_tbl[i].iavcc = NULL;
210 dev->desc_tbl[i].txskb = NULL;
211 }
212 i++;
213 } /* while */
214 }
215 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
216 return 0xFFFF;
217
218 /* Get the next available descriptor number from TCQ */
219 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
220
221 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
222 dev->ffL.tcq_rd += 2;
223 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
224 dev->ffL.tcq_rd = dev->ffL.tcq_st;
225 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
226 return 0xFFFF;
227 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
228 }
229
230 /* get system time */
231 dev->desc_tbl[desc_num -1].timestamp = jiffies;
232 return desc_num;
233}
234
235static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
236 u_char foundLockUp;
237 vcstatus_t *vcstatus;
238 u_short *shd_tbl;
239 u_short tempCellSlot, tempFract;
240 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
241 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
242 u_int i;
243
244 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
245 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
246 vcstatus->cnt++;
247 foundLockUp = 0;
248 if( vcstatus->cnt == 0x05 ) {
249 abr_vc += vcc->vci;
250 eabr_vc += vcc->vci;
251 if( eabr_vc->last_desc ) {
252 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
253 /* Wait for 10 Micro sec */
254 udelay(10);
255 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
256 foundLockUp = 1;
257 }
258 else {
259 tempCellSlot = abr_vc->last_cell_slot;
260 tempFract = abr_vc->fraction;
261 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
262 && (tempFract == dev->testTable[vcc->vci]->fract))
263 foundLockUp = 1;
264 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
265 dev->testTable[vcc->vci]->fract = tempFract;
266 }
267 } /* last descriptor */
268 vcstatus->cnt = 0;
269 } /* vcstatus->cnt */
270
271 if (foundLockUp) {
272 IF_ABR(printk("LOCK UP found\n");)
273 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
274 /* Wait for 10 Micro sec */
275 udelay(10);
276 abr_vc->status &= 0xFFF8;
277 abr_vc->status |= 0x0001; /* state is idle */
278 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
279 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
280 if (i < dev->num_vc)
281 shd_tbl[i] = vcc->vci;
282 else
283 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
284 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
285 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
286 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
287 vcstatus->cnt = 0;
288 } /* foundLockUp */
289
290 } /* if an ABR VC */
291
292
293}
294
295/*
296** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
297**
298** +----+----+------------------+-------------------------------+
299** | R | NZ | 5-bit exponent | 9-bit mantissa |
300** +----+----+------------------+-------------------------------+
301**
302** R = reserved (written as 0)
303** NZ = 0 if 0 cells/sec; 1 otherwise
304**
305** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
306*/
307static u16
308cellrate_to_float(u32 cr)
309{
310
311#define NZ 0x4000
312#define M_BITS 9 /* Number of bits in mantissa */
313#define E_BITS 5 /* Number of bits in exponent */
314#define M_MASK 0x1ff
315#define E_MASK 0x1f
316 u16 flot;
317 u32 tmp = cr & 0x00ffffff;
318 int i = 0;
319 if (cr == 0)
320 return 0;
321 while (tmp != 1) {
322 tmp >>= 1;
323 i++;
324 }
325 if (i == M_BITS)
326 flot = NZ | (i << M_BITS) | (cr & M_MASK);
327 else if (i < M_BITS)
328 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
329 else
330 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
331 return flot;
332}
333
334#if 0
335/*
336** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
337*/
338static u32
339float_to_cellrate(u16 rate)
340{
341 u32 exp, mantissa, cps;
342 if ((rate & NZ) == 0)
343 return 0;
344 exp = (rate >> M_BITS) & E_MASK;
345 mantissa = rate & M_MASK;
346 if (exp == 0)
347 return 1;
348 cps = (1 << M_BITS) | mantissa;
349 if (exp == M_BITS)
350 cps = cps;
351 else if (exp > M_BITS)
352 cps <<= (exp - M_BITS);
353 else
354 cps >>= (M_BITS - exp);
355 return cps;
356}
357#endif
358
359static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
360 srv_p->class_type = ATM_ABR;
361 srv_p->pcr = dev->LineRate;
362 srv_p->mcr = 0;
363 srv_p->icr = 0x055cb7;
364 srv_p->tbe = 0xffffff;
365 srv_p->frtt = 0x3a;
366 srv_p->rif = 0xf;
367 srv_p->rdf = 0xb;
368 srv_p->nrm = 0x4;
369 srv_p->trm = 0x7;
370 srv_p->cdf = 0x3;
371 srv_p->adtf = 50;
372}
373
374static int
375ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
376 struct atm_vcc *vcc, u8 flag)
377{
378 f_vc_abr_entry *f_abr_vc;
379 r_vc_abr_entry *r_abr_vc;
380 u32 icr;
381 u8 trm, nrm, crm;
382 u16 adtf, air, *ptr16;
383 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
384 f_abr_vc += vcc->vci;
385 switch (flag) {
386 case 1: /* FFRED initialization */
387#if 0 /* sanity check */
388 if (srv_p->pcr == 0)
389 return INVALID_PCR;
390 if (srv_p->pcr > dev->LineRate)
391 srv_p->pcr = dev->LineRate;
392 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
393 return MCR_UNAVAILABLE;
394 if (srv_p->mcr > srv_p->pcr)
395 return INVALID_MCR;
396 if (!(srv_p->icr))
397 srv_p->icr = srv_p->pcr;
398 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
399 return INVALID_ICR;
400 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
401 return INVALID_TBE;
402 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
403 return INVALID_FRTT;
404 if (srv_p->nrm > MAX_NRM)
405 return INVALID_NRM;
406 if (srv_p->trm > MAX_TRM)
407 return INVALID_TRM;
408 if (srv_p->adtf > MAX_ADTF)
409 return INVALID_ADTF;
410 else if (srv_p->adtf == 0)
411 srv_p->adtf = 1;
412 if (srv_p->cdf > MAX_CDF)
413 return INVALID_CDF;
414 if (srv_p->rif > MAX_RIF)
415 return INVALID_RIF;
416 if (srv_p->rdf > MAX_RDF)
417 return INVALID_RDF;
418#endif
419 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
420 f_abr_vc->f_vc_type = ABR;
421 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
422 /* i.e 2**n = 2 << (n-1) */
423 f_abr_vc->f_nrm = nrm << 8 | nrm;
424 trm = 100000/(2 << (16 - srv_p->trm));
425 if ( trm == 0) trm = 1;
426 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
427 crm = srv_p->tbe / nrm;
428 if (crm == 0) crm = 1;
429 f_abr_vc->f_crm = crm & 0xff;
430 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
431 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
432 ((srv_p->tbe/srv_p->frtt)*1000000) :
433 (1000000/(srv_p->frtt/srv_p->tbe)));
434 f_abr_vc->f_icr = cellrate_to_float(icr);
435 adtf = (10000 * srv_p->adtf)/8192;
436 if (adtf == 0) adtf = 1;
437 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
438 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
439 f_abr_vc->f_acr = f_abr_vc->f_icr;
440 f_abr_vc->f_status = 0x0042;
441 break;
442 case 0: /* RFRED initialization */
443 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
444 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
445 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
446 r_abr_vc += vcc->vci;
447 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
448 air = srv_p->pcr << (15 - srv_p->rif);
449 if (air == 0) air = 1;
450 r_abr_vc->r_air = cellrate_to_float(air);
451 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
452 dev->sum_mcr += srv_p->mcr;
453 dev->n_abr++;
454 break;
455 default:
456 break;
457 }
458 return 0;
459}
460static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
461 u32 rateLow=0, rateHigh, rate;
462 int entries;
463 struct ia_vcc *ia_vcc;
464
465 int idealSlot =0, testSlot, toBeAssigned, inc;
466 u32 spacing;
467 u16 *SchedTbl, *TstSchedTbl;
468 u16 cbrVC, vcIndex;
469 u32 fracSlot = 0;
470 u32 sp_mod = 0;
471 u32 sp_mod2 = 0;
472
473 /* IpAdjustTrafficParams */
474 if (vcc->qos.txtp.max_pcr <= 0) {
475 IF_ERR(printk("PCR for CBR not defined\n");)
476 return -1;
477 }
478 rate = vcc->qos.txtp.max_pcr;
479 entries = rate / dev->Granularity;
480 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
481 entries, rate, dev->Granularity);)
482 if (entries < 1)
483 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
484 rateLow = entries * dev->Granularity;
485 rateHigh = (entries + 1) * dev->Granularity;
486 if (3*(rate - rateLow) > (rateHigh - rate))
487 entries++;
488 if (entries > dev->CbrRemEntries) {
489 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
490 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
491 entries, dev->CbrRemEntries);)
492 return -EBUSY;
493 }
494
495 ia_vcc = INPH_IA_VCC(vcc);
496 ia_vcc->NumCbrEntry = entries;
497 dev->sum_mcr += entries * dev->Granularity;
498 /* IaFFrednInsertCbrSched */
499 // Starting at an arbitrary location, place the entries into the table
500 // as smoothly as possible
501 cbrVC = 0;
502 spacing = dev->CbrTotEntries / entries;
503 sp_mod = dev->CbrTotEntries % entries; // get modulo
504 toBeAssigned = entries;
505 fracSlot = 0;
506 vcIndex = vcc->vci;
507 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
508 while (toBeAssigned)
509 {
510 // If this is the first time, start the table loading for this connection
511 // as close to entryPoint as possible.
512 if (toBeAssigned == entries)
513 {
514 idealSlot = dev->CbrEntryPt;
515 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
516 if (dev->CbrEntryPt >= dev->CbrTotEntries)
517 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
518 } else {
519 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
520 // in the table that would be smoothest
521 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
522 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
523 }
524 if (idealSlot >= (int)dev->CbrTotEntries)
525 idealSlot -= dev->CbrTotEntries;
526 // Continuously check around this ideal value until a null
527 // location is encountered.
528 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
529 inc = 0;
530 testSlot = idealSlot;
531 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
532 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n",
533 testSlot, TstSchedTbl,toBeAssigned);)
534 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
535 while (cbrVC) // If another VC at this location, we have to keep looking
536 {
537 inc++;
538 testSlot = idealSlot - inc;
539 if (testSlot < 0) { // Wrap if necessary
540 testSlot += dev->CbrTotEntries;
541 IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n",
542 SchedTbl,testSlot);)
543 }
544 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
545 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
546 if (!cbrVC)
547 break;
548 testSlot = idealSlot + inc;
549 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
550 testSlot -= dev->CbrTotEntries;
551 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
552 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
553 testSlot, toBeAssigned);)
554 }
555 // set table index and read in value
556 TstSchedTbl = (u16*)(SchedTbl + testSlot);
557 IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n",
558 TstSchedTbl,cbrVC,inc);)
559 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
560 } /* while */
561 // Move this VCI number into this location of the CBR Sched table.
562 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex, sizeof(*TstSchedTbl));
563 dev->CbrRemEntries--;
564 toBeAssigned--;
565 } /* while */
566
567 /* IaFFrednCbrEnable */
568 dev->NumEnabledCBR++;
569 if (dev->NumEnabledCBR == 1) {
570 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
571 IF_CBR(printk("CBR is enabled\n");)
572 }
573 return 0;
574}
575static void ia_cbrVc_close (struct atm_vcc *vcc) {
576 IADEV *iadev;
577 u16 *SchedTbl, NullVci = 0;
578 u32 i, NumFound;
579
580 iadev = INPH_IA_DEV(vcc->dev);
581 iadev->NumEnabledCBR--;
582 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
583 if (iadev->NumEnabledCBR == 0) {
584 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
585 IF_CBR (printk("CBR support disabled\n");)
586 }
587 NumFound = 0;
588 for (i=0; i < iadev->CbrTotEntries; i++)
589 {
590 if (*SchedTbl == vcc->vci) {
591 iadev->CbrRemEntries++;
592 *SchedTbl = NullVci;
593 IF_CBR(NumFound++;)
594 }
595 SchedTbl++;
596 }
597 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
598}
599
600static int ia_avail_descs(IADEV *iadev) {
601 int tmp = 0;
602 ia_hack_tcq(iadev);
603 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
604 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
605 else
606 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
607 iadev->ffL.tcq_st) / 2;
608 return tmp;
609}
610
611static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
612
613static int ia_que_tx (IADEV *iadev) {
614 struct sk_buff *skb;
615 int num_desc;
616 struct atm_vcc *vcc;
617 num_desc = ia_avail_descs(iadev);
618
619 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
620 if (!(vcc = ATM_SKB(skb)->vcc)) {
621 dev_kfree_skb_any(skb);
622 printk("ia_que_tx: Null vcc\n");
623 break;
624 }
625 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
626 dev_kfree_skb_any(skb);
627 printk("Free the SKB on closed vci %d \n", vcc->vci);
628 break;
629 }
630 if (ia_pkt_tx (vcc, skb)) {
631 skb_queue_head(&iadev->tx_backlog, skb);
632 }
633 num_desc--;
634 }
635 return 0;
636}
637
638static void ia_tx_poll (IADEV *iadev) {
639 struct atm_vcc *vcc = NULL;
640 struct sk_buff *skb = NULL, *skb1 = NULL;
641 struct ia_vcc *iavcc;
642 IARTN_Q * rtne;
643
644 ia_hack_tcq(iadev);
645 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
646 skb = rtne->data.txskb;
647 if (!skb) {
648 printk("ia_tx_poll: skb is null\n");
649 goto out;
650 }
651 vcc = ATM_SKB(skb)->vcc;
652 if (!vcc) {
653 printk("ia_tx_poll: vcc is null\n");
654 dev_kfree_skb_any(skb);
655 goto out;
656 }
657
658 iavcc = INPH_IA_VCC(vcc);
659 if (!iavcc) {
660 printk("ia_tx_poll: iavcc is null\n");
661 dev_kfree_skb_any(skb);
662 goto out;
663 }
664
665 skb1 = skb_dequeue(&iavcc->txing_skb);
666 while (skb1 && (skb1 != skb)) {
667 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
668 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
669 }
670 IF_ERR(printk("Release the SKB not match\n");)
671 if ((vcc->pop) && (skb1->len != 0))
672 {
673 vcc->pop(vcc, skb1);
674 IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
675 (long)skb1);)
676 }
677 else
678 dev_kfree_skb_any(skb1);
679 skb1 = skb_dequeue(&iavcc->txing_skb);
680 }
681 if (!skb1) {
682 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
683 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
684 break;
685 }
686 if ((vcc->pop) && (skb->len != 0))
687 {
688 vcc->pop(vcc, skb);
689 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
690 }
691 else
692 dev_kfree_skb_any(skb);
693 kfree(rtne);
694 }
695 ia_que_tx(iadev);
696out:
697 return;
698}
699#if 0
700static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
701{
702 u32 t;
703 int i;
704 /*
705 * Issue a command to enable writes to the NOVRAM
706 */
707 NVRAM_CMD (EXTEND + EWEN);
708 NVRAM_CLR_CE;
709 /*
710 * issue the write command
711 */
712 NVRAM_CMD(IAWRITE + addr);
713 /*
714 * Send the data, starting with D15, then D14, and so on for 16 bits
715 */
716 for (i=15; i>=0; i--) {
717 NVRAM_CLKOUT (val & 0x8000);
718 val <<= 1;
719 }
720 NVRAM_CLR_CE;
721 CFG_OR(NVCE);
722 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
723 while (!(t & NVDO))
724 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
725
726 NVRAM_CLR_CE;
727 /*
728 * disable writes again
729 */
730 NVRAM_CMD(EXTEND + EWDS)
731 NVRAM_CLR_CE;
732 CFG_AND(~NVDI);
733}
734#endif
735
736static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
737{
738 u_short val;
739 u32 t;
740 int i;
741 /*
742 * Read the first bit that was clocked with the falling edge of the
743 * the last command data clock
744 */
745 NVRAM_CMD(IAREAD + addr);
746 /*
747 * Now read the rest of the bits, the next bit read is D14, then D13,
748 * and so on.
749 */
750 val = 0;
751 for (i=15; i>=0; i--) {
752 NVRAM_CLKIN(t);
753 val |= (t << i);
754 }
755 NVRAM_CLR_CE;
756 CFG_AND(~NVDI);
757 return val;
758}
759
760static void ia_hw_type(IADEV *iadev) {
761 u_short memType = ia_eeprom_get(iadev, 25);
762 iadev->memType = memType;
763 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
764 iadev->num_tx_desc = IA_TX_BUF;
765 iadev->tx_buf_sz = IA_TX_BUF_SZ;
766 iadev->num_rx_desc = IA_RX_BUF;
767 iadev->rx_buf_sz = IA_RX_BUF_SZ;
768 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
769 if (IA_TX_BUF == DFL_TX_BUFFERS)
770 iadev->num_tx_desc = IA_TX_BUF / 2;
771 else
772 iadev->num_tx_desc = IA_TX_BUF;
773 iadev->tx_buf_sz = IA_TX_BUF_SZ;
774 if (IA_RX_BUF == DFL_RX_BUFFERS)
775 iadev->num_rx_desc = IA_RX_BUF / 2;
776 else
777 iadev->num_rx_desc = IA_RX_BUF;
778 iadev->rx_buf_sz = IA_RX_BUF_SZ;
779 }
780 else {
781 if (IA_TX_BUF == DFL_TX_BUFFERS)
782 iadev->num_tx_desc = IA_TX_BUF / 8;
783 else
784 iadev->num_tx_desc = IA_TX_BUF;
785 iadev->tx_buf_sz = IA_TX_BUF_SZ;
786 if (IA_RX_BUF == DFL_RX_BUFFERS)
787 iadev->num_rx_desc = IA_RX_BUF / 8;
788 else
789 iadev->num_rx_desc = IA_RX_BUF;
790 iadev->rx_buf_sz = IA_RX_BUF_SZ;
791 }
792 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
793 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
794 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
795 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
796
797#if 0
798 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
799 iadev->phy_type = PHY_OC3C_S;
800 else if ((memType & FE_MASK) == FE_UTP_OPTION)
801 iadev->phy_type = PHY_UTP155;
802 else
803 iadev->phy_type = PHY_OC3C_M;
804#endif
805
806 iadev->phy_type = memType & FE_MASK;
807 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
808 memType,iadev->phy_type);)
809 if (iadev->phy_type == FE_25MBIT_PHY)
810 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
811 else if (iadev->phy_type == FE_DS3_PHY)
812 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
813 else if (iadev->phy_type == FE_E3_PHY)
814 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
815 else
816 iadev->LineRate = (u32)(ATM_OC3_PCR);
817 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
818
819}
820
821static u32 ia_phy_read32(struct iadev_priv *ia, unsigned int reg)
822{
823 return readl(ia->phy + (reg >> 2));
824}
825
826static void ia_phy_write32(struct iadev_priv *ia, unsigned int reg, u32 val)
827{
828 writel(val, ia->phy + (reg >> 2));
829}
830
831static void ia_frontend_intr(struct iadev_priv *iadev)
832{
833 u32 status;
834
835 if (iadev->phy_type & FE_25MBIT_PHY) {
836 status = ia_phy_read32(iadev, MB25_INTR_STATUS);
837 iadev->carrier_detect = (status & MB25_IS_GSB) ? 1 : 0;
838 } else if (iadev->phy_type & FE_DS3_PHY) {
839 ia_phy_read32(iadev, SUNI_DS3_FRM_INTR_STAT);
840 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
841 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
842 } else if (iadev->phy_type & FE_E3_PHY) {
843 ia_phy_read32(iadev, SUNI_E3_FRM_MAINT_INTR_IND);
844 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
845 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
846 } else {
847 status = ia_phy_read32(iadev, SUNI_RSOP_STATUS);
848 iadev->carrier_detect = (status & SUNI_LOSV) ? 0 : 1;
849 }
850
851 printk(KERN_INFO "IA: SUNI carrier %s\n",
852 iadev->carrier_detect ? "detected" : "lost signal");
853}
854
855static void ia_mb25_init(struct iadev_priv *iadev)
856{
857#if 0
858 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
859#endif
860 ia_phy_write32(iadev, MB25_MASTER_CTRL, MB25_MC_DRIC | MB25_MC_DREC);
861 ia_phy_write32(iadev, MB25_DIAG_CONTROL, 0);
862
863 iadev->carrier_detect =
864 (ia_phy_read32(iadev, MB25_INTR_STATUS) & MB25_IS_GSB) ? 1 : 0;
865}
866
867struct ia_reg {
868 u16 reg;
869 u16 val;
870};
871
872static void ia_phy_write(struct iadev_priv *iadev,
873 const struct ia_reg *regs, int len)
874{
875 while (len--) {
876 ia_phy_write32(iadev, regs->reg, regs->val);
877 regs++;
878 }
879}
880
881static void ia_suni_pm7345_init_ds3(struct iadev_priv *iadev)
882{
883 static const struct ia_reg suni_ds3_init [] = {
884 { SUNI_DS3_FRM_INTR_ENBL, 0x17 },
885 { SUNI_DS3_FRM_CFG, 0x01 },
886 { SUNI_DS3_TRAN_CFG, 0x01 },
887 { SUNI_CONFIG, 0 },
888 { SUNI_SPLR_CFG, 0 },
889 { SUNI_SPLT_CFG, 0 }
890 };
891 u32 status;
892
893 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
894 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
895
896 ia_phy_write(iadev, suni_ds3_init, ARRAY_SIZE(suni_ds3_init));
897}
898
899static void ia_suni_pm7345_init_e3(struct iadev_priv *iadev)
900{
901 static const struct ia_reg suni_e3_init [] = {
902 { SUNI_E3_FRM_FRAM_OPTIONS, 0x04 },
903 { SUNI_E3_FRM_MAINT_OPTIONS, 0x20 },
904 { SUNI_E3_FRM_FRAM_INTR_ENBL, 0x1d },
905 { SUNI_E3_FRM_MAINT_INTR_ENBL, 0x30 },
906 { SUNI_E3_TRAN_STAT_DIAG_OPTIONS, 0 },
907 { SUNI_E3_TRAN_FRAM_OPTIONS, 0x01 },
908 { SUNI_CONFIG, SUNI_PM7345_E3ENBL },
909 { SUNI_SPLR_CFG, 0x41 },
910 { SUNI_SPLT_CFG, 0x41 }
911 };
912 u32 status;
913
914 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
915 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
916 ia_phy_write(iadev, suni_e3_init, ARRAY_SIZE(suni_e3_init));
917}
918
919static void ia_suni_pm7345_init(struct iadev_priv *iadev)
920{
921 static const struct ia_reg suni_init [] = {
922 /* Enable RSOP loss of signal interrupt. */
923 { SUNI_INTR_ENBL, 0x28 },
924 /* Clear error counters. */
925 { SUNI_ID_RESET, 0 },
926 /* Clear "PMCTST" in master test register. */
927 { SUNI_MASTER_TEST, 0 },
928
929 { SUNI_RXCP_CTRL, 0x2c },
930 { SUNI_RXCP_FCTRL, 0x81 },
931
932 { SUNI_RXCP_IDLE_PAT_H1, 0 },
933 { SUNI_RXCP_IDLE_PAT_H2, 0 },
934 { SUNI_RXCP_IDLE_PAT_H3, 0 },
935 { SUNI_RXCP_IDLE_PAT_H4, 0x01 },
936
937 { SUNI_RXCP_IDLE_MASK_H1, 0xff },
938 { SUNI_RXCP_IDLE_MASK_H2, 0xff },
939 { SUNI_RXCP_IDLE_MASK_H3, 0xff },
940 { SUNI_RXCP_IDLE_MASK_H4, 0xfe },
941
942 { SUNI_RXCP_CELL_PAT_H1, 0 },
943 { SUNI_RXCP_CELL_PAT_H2, 0 },
944 { SUNI_RXCP_CELL_PAT_H3, 0 },
945 { SUNI_RXCP_CELL_PAT_H4, 0x01 },
946
947 { SUNI_RXCP_CELL_MASK_H1, 0xff },
948 { SUNI_RXCP_CELL_MASK_H2, 0xff },
949 { SUNI_RXCP_CELL_MASK_H3, 0xff },
950 { SUNI_RXCP_CELL_MASK_H4, 0xff },
951
952 { SUNI_TXCP_CTRL, 0xa4 },
953 { SUNI_TXCP_INTR_EN_STS, 0x10 },
954 { SUNI_TXCP_IDLE_PAT_H5, 0x55 }
955 };
956
957 if (iadev->phy_type & FE_DS3_PHY)
958 ia_suni_pm7345_init_ds3(iadev);
959 else
960 ia_suni_pm7345_init_e3(iadev);
961
962 ia_phy_write(iadev, suni_init, ARRAY_SIZE(suni_init));
963
964 ia_phy_write32(iadev, SUNI_CONFIG, ia_phy_read32(iadev, SUNI_CONFIG) &
965 ~(SUNI_PM7345_LLB | SUNI_PM7345_CLB |
966 SUNI_PM7345_DLB | SUNI_PM7345_PLB));
967#ifdef __SNMP__
968 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
969#endif /* __SNMP__ */
970 return;
971}
972
973
974/***************************** IA_LIB END *****************************/
975
976#ifdef CONFIG_ATM_IA_DEBUG
977static int tcnter = 0;
978static void xdump( u_char* cp, int length, char* prefix )
979{
980 int col, count;
981 u_char prntBuf[120];
982 u_char* pBuf = prntBuf;
983 count = 0;
984 while(count < length){
985 pBuf += sprintf( pBuf, "%s", prefix );
986 for(col = 0;count + col < length && col < 16; col++){
987 if (col != 0 && (col % 4) == 0)
988 pBuf += sprintf( pBuf, " " );
989 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
990 }
991 while(col++ < 16){ /* pad end of buffer with blanks */
992 if ((col % 4) == 0)
993 sprintf( pBuf, " " );
994 pBuf += sprintf( pBuf, " " );
995 }
996 pBuf += sprintf( pBuf, " " );
997 for(col = 0;count + col < length && col < 16; col++){
998 if (isprint((int)cp[count + col]))
999 pBuf += sprintf( pBuf, "%c", cp[count + col] );
1000 else
1001 pBuf += sprintf( pBuf, "." );
1002 }
1003 printk("%s\n", prntBuf);
1004 count += col;
1005 pBuf = prntBuf;
1006 }
1007
1008} /* close xdump(... */
1009#endif /* CONFIG_ATM_IA_DEBUG */
1010
1011
1012static struct atm_dev *ia_boards = NULL;
1013
1014#define ACTUAL_RAM_BASE \
1015 RAM_BASE*((iadev->mem)/(128 * 1024))
1016#define ACTUAL_SEG_RAM_BASE \
1017 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1018#define ACTUAL_REASS_RAM_BASE \
1019 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1020
1021
1022/*-- some utilities and memory allocation stuff will come here -------------*/
1023
1024static void desc_dbg(IADEV *iadev) {
1025
1026 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1027 u32 i;
1028 void __iomem *tmp;
1029 // regval = readl((u32)ia_cmds->maddr);
1030 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1031 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1032 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1033 readw(iadev->seg_ram+tcq_wr_ptr-2));
1034 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1035 iadev->ffL.tcq_rd);
1036 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1037 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1038 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1039 i = 0;
1040 while (tcq_st_ptr != tcq_ed_ptr) {
1041 tmp = iadev->seg_ram+tcq_st_ptr;
1042 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1043 tcq_st_ptr += 2;
1044 }
1045 for(i=0; i <iadev->num_tx_desc; i++)
1046 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1047}
1048
1049
1050/*----------------------------- Receiving side stuff --------------------------*/
1051
1052static void rx_excp_rcvd(struct atm_dev *dev)
1053{
1054#if 0 /* closing the receiving size will cause too many excp int */
1055 IADEV *iadev;
1056 u_short state;
1057 u_short excpq_rd_ptr;
1058 //u_short *ptr;
1059 int vci, error = 1;
1060 iadev = INPH_IA_DEV(dev);
1061 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1062 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1063 { printk("state = %x \n", state);
1064 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1065 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1066 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1067 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1068 // TODO: update exception stat
1069 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1070 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1071 // pwang_test
1072 excpq_rd_ptr += 4;
1073 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1074 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1075 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1076 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1077 }
1078#endif
1079}
1080
1081static void free_desc(struct atm_dev *dev, int desc)
1082{
1083 IADEV *iadev;
1084 iadev = INPH_IA_DEV(dev);
1085 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1086 iadev->rfL.fdq_wr +=2;
1087 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1088 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1089 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1090}
1091
1092
1093static int rx_pkt(struct atm_dev *dev)
1094{
1095 IADEV *iadev;
1096 struct atm_vcc *vcc;
1097 unsigned short status;
1098 struct rx_buf_desc __iomem *buf_desc_ptr;
1099 int desc;
1100 struct dle* wr_ptr;
1101 int len;
1102 struct sk_buff *skb;
1103 u_int buf_addr, dma_addr;
1104
1105 iadev = INPH_IA_DEV(dev);
1106 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1107 {
1108 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1109 return -EINVAL;
1110 }
1111 /* mask 1st 3 bits to get the actual descno. */
1112 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1113 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1114 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1115 printk(" pcq_wr_ptr = 0x%x\n",
1116 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1117 /* update the read pointer - maybe we shud do this in the end*/
1118 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1119 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1120 else
1121 iadev->rfL.pcq_rd += 2;
1122 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1123
1124 /* get the buffer desc entry.
1125 update stuff. - doesn't seem to be any update necessary
1126 */
1127 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1128 /* make the ptr point to the corresponding buffer desc entry */
1129 buf_desc_ptr += desc;
1130 if (!desc || (desc > iadev->num_rx_desc) ||
1131 ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1132 free_desc(dev, desc);
1133 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1134 return -1;
1135 }
1136 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1137 if (!vcc)
1138 {
1139 free_desc(dev, desc);
1140 printk("IA: null vcc, drop PDU\n");
1141 return -1;
1142 }
1143
1144
1145 /* might want to check the status bits for errors */
1146 status = (u_short) (buf_desc_ptr->desc_mode);
1147 if (status & (RX_CER | RX_PTE | RX_OFL))
1148 {
1149 atomic_inc(&vcc->stats->rx_err);
1150 IF_ERR(printk("IA: bad packet, dropping it");)
1151 if (status & RX_CER) {
1152 IF_ERR(printk(" cause: packet CRC error\n");)
1153 }
1154 else if (status & RX_PTE) {
1155 IF_ERR(printk(" cause: packet time out\n");)
1156 }
1157 else {
1158 IF_ERR(printk(" cause: buffer overflow\n");)
1159 }
1160 goto out_free_desc;
1161 }
1162
1163 /*
1164 build DLE.
1165 */
1166
1167 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1168 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1169 len = dma_addr - buf_addr;
1170 if (len > iadev->rx_buf_sz) {
1171 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1172 atomic_inc(&vcc->stats->rx_err);
1173 goto out_free_desc;
1174 }
1175
1176 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1177 if (vcc->vci < 32)
1178 printk("Drop control packets\n");
1179 goto out_free_desc;
1180 }
1181 skb_put(skb,len);
1182 // pwang_test
1183 ATM_SKB(skb)->vcc = vcc;
1184 ATM_DESC(skb) = desc;
1185 skb_queue_tail(&iadev->rx_dma_q, skb);
1186
1187 /* Build the DLE structure */
1188 wr_ptr = iadev->rx_dle_q.write;
1189 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
1190 len, DMA_FROM_DEVICE);
1191 wr_ptr->local_pkt_addr = buf_addr;
1192 wr_ptr->bytes = len; /* We don't know this do we ?? */
1193 wr_ptr->mode = DMA_INT_ENABLE;
1194
1195 /* shud take care of wrap around here too. */
1196 if(++wr_ptr == iadev->rx_dle_q.end)
1197 wr_ptr = iadev->rx_dle_q.start;
1198 iadev->rx_dle_q.write = wr_ptr;
1199 udelay(1);
1200 /* Increment transaction counter */
1201 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1202out: return 0;
1203out_free_desc:
1204 free_desc(dev, desc);
1205 goto out;
1206}
1207
1208static void rx_intr(struct atm_dev *dev)
1209{
1210 IADEV *iadev;
1211 u_short status;
1212 u_short state, i;
1213
1214 iadev = INPH_IA_DEV(dev);
1215 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1216 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1217 if (status & RX_PKT_RCVD)
1218 {
1219 /* do something */
1220 /* Basically recvd an interrupt for receiving a packet.
1221 A descriptor would have been written to the packet complete
1222 queue. Get all the descriptors and set up dma to move the
1223 packets till the packet complete queue is empty..
1224 */
1225 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1226 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1227 while(!(state & PCQ_EMPTY))
1228 {
1229 rx_pkt(dev);
1230 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1231 }
1232 iadev->rxing = 1;
1233 }
1234 if (status & RX_FREEQ_EMPT)
1235 {
1236 if (iadev->rxing) {
1237 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1238 iadev->rx_tmp_jif = jiffies;
1239 iadev->rxing = 0;
1240 }
1241 else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
1242 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1243 for (i = 1; i <= iadev->num_rx_desc; i++)
1244 free_desc(dev, i);
1245printk("Test logic RUN!!!!\n");
1246 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1247 iadev->rxing = 1;
1248 }
1249 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1250 }
1251
1252 if (status & RX_EXCP_RCVD)
1253 {
1254 /* probably need to handle the exception queue also. */
1255 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1256 rx_excp_rcvd(dev);
1257 }
1258
1259
1260 if (status & RX_RAW_RCVD)
1261 {
1262 /* need to handle the raw incoming cells. This deepnds on
1263 whether we have programmed to receive the raw cells or not.
1264 Else ignore. */
1265 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1266 }
1267}
1268
1269
1270static void rx_dle_intr(struct atm_dev *dev)
1271{
1272 IADEV *iadev;
1273 struct atm_vcc *vcc;
1274 struct sk_buff *skb;
1275 int desc;
1276 u_short state;
1277 struct dle *dle, *cur_dle;
1278 u_int dle_lp;
1279 int len;
1280 iadev = INPH_IA_DEV(dev);
1281
1282 /* free all the dles done, that is just update our own dle read pointer
1283 - do we really need to do this. Think not. */
1284 /* DMA is done, just get all the recevie buffers from the rx dma queue
1285 and push them up to the higher layer protocol. Also free the desc
1286 associated with the buffer. */
1287 dle = iadev->rx_dle_q.read;
1288 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1289 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1290 while(dle != cur_dle)
1291 {
1292 /* free the DMAed skb */
1293 skb = skb_dequeue(&iadev->rx_dma_q);
1294 if (!skb)
1295 goto INCR_DLE;
1296 desc = ATM_DESC(skb);
1297 free_desc(dev, desc);
1298
1299 if (!(len = skb->len))
1300 {
1301 printk("rx_dle_intr: skb len 0\n");
1302 dev_kfree_skb_any(skb);
1303 }
1304 else
1305 {
1306 struct cpcs_trailer *trailer;
1307 u_short length;
1308 struct ia_vcc *ia_vcc;
1309
1310 dma_unmap_single(&iadev->pci->dev, iadev->rx_dle_q.write->sys_pkt_addr,
1311 len, DMA_FROM_DEVICE);
1312 /* no VCC related housekeeping done as yet. lets see */
1313 vcc = ATM_SKB(skb)->vcc;
1314 if (!vcc) {
1315 printk("IA: null vcc\n");
1316 dev_kfree_skb_any(skb);
1317 goto INCR_DLE;
1318 }
1319 ia_vcc = INPH_IA_VCC(vcc);
1320 if (ia_vcc == NULL)
1321 {
1322 atomic_inc(&vcc->stats->rx_err);
1323 atm_return(vcc, skb->truesize);
1324 dev_kfree_skb_any(skb);
1325 goto INCR_DLE;
1326 }
1327 // get real pkt length pwang_test
1328 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1329 skb->len - sizeof(*trailer));
1330 length = swap_byte_order(trailer->length);
1331 if ((length > iadev->rx_buf_sz) || (length >
1332 (skb->len - sizeof(struct cpcs_trailer))))
1333 {
1334 atomic_inc(&vcc->stats->rx_err);
1335 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1336 length, skb->len);)
1337 atm_return(vcc, skb->truesize);
1338 dev_kfree_skb_any(skb);
1339 goto INCR_DLE;
1340 }
1341 skb_trim(skb, length);
1342
1343 /* Display the packet */
1344 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1345 xdump(skb->data, skb->len, "RX: ");
1346 printk("\n");)
1347
1348 IF_RX(printk("rx_dle_intr: skb push");)
1349 vcc->push(vcc,skb);
1350 atomic_inc(&vcc->stats->rx);
1351 iadev->rx_pkt_cnt++;
1352 }
1353INCR_DLE:
1354 if (++dle == iadev->rx_dle_q.end)
1355 dle = iadev->rx_dle_q.start;
1356 }
1357 iadev->rx_dle_q.read = dle;
1358
1359 /* if the interrupts are masked because there were no free desc available,
1360 unmask them now. */
1361 if (!iadev->rxing) {
1362 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1363 if (!(state & FREEQ_EMPTY)) {
1364 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1365 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1366 iadev->reass_reg+REASS_MASK_REG);
1367 iadev->rxing++;
1368 }
1369 }
1370}
1371
1372
1373static int open_rx(struct atm_vcc *vcc)
1374{
1375 IADEV *iadev;
1376 u_short __iomem *vc_table;
1377 u_short __iomem *reass_ptr;
1378 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1379
1380 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1381 iadev = INPH_IA_DEV(vcc->dev);
1382 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1383 if (iadev->phy_type & FE_25MBIT_PHY) {
1384 printk("IA: ABR not support\n");
1385 return -EINVAL;
1386 }
1387 }
1388 /* Make only this VCI in the vc table valid and let all
1389 others be invalid entries */
1390 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1391 vc_table += vcc->vci;
1392 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1393
1394 *vc_table = vcc->vci << 6;
1395 /* Also keep a list of open rx vcs so that we can attach them with
1396 incoming PDUs later. */
1397 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1398 (vcc->qos.txtp.traffic_class == ATM_ABR))
1399 {
1400 srv_cls_param_t srv_p;
1401 init_abr_vc(iadev, &srv_p);
1402 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1403 }
1404 else { /* for UBR later may need to add CBR logic */
1405 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1406 reass_ptr += vcc->vci;
1407 *reass_ptr = NO_AAL5_PKT;
1408 }
1409
1410 if (iadev->rx_open[vcc->vci])
1411 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1412 vcc->dev->number, vcc->vci);
1413 iadev->rx_open[vcc->vci] = vcc;
1414 return 0;
1415}
1416
1417static int rx_init(struct atm_dev *dev)
1418{
1419 IADEV *iadev;
1420 struct rx_buf_desc __iomem *buf_desc_ptr;
1421 unsigned long rx_pkt_start = 0;
1422 void *dle_addr;
1423 struct abr_vc_table *abr_vc_table;
1424 u16 *vc_table;
1425 u16 *reass_table;
1426 int i,j, vcsize_sel;
1427 u_short freeq_st_adr;
1428 u_short *freeq_start;
1429
1430 iadev = INPH_IA_DEV(dev);
1431 // spin_lock_init(&iadev->rx_lock);
1432
1433 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1434 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1435 &iadev->rx_dle_dma, GFP_KERNEL);
1436 if (!dle_addr) {
1437 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1438 goto err_out;
1439 }
1440 iadev->rx_dle_q.start = (struct dle *)dle_addr;
1441 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1442 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
1443 iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1444 /* the end of the dle q points to the entry after the last
1445 DLE that can be used. */
1446
1447 /* write the upper 20 bits of the start address to rx list address register */
1448 /* We know this is 32bit bus addressed so the following is safe */
1449 writel(iadev->rx_dle_dma & 0xfffff000,
1450 iadev->dma + IPHASE5575_RX_LIST_ADDR);
1451 IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n",
1452 iadev->dma+IPHASE5575_TX_LIST_ADDR,
1453 readl(iadev->dma + IPHASE5575_TX_LIST_ADDR));
1454 printk("Rx Dle list addr: 0x%p value: 0x%0x\n",
1455 iadev->dma+IPHASE5575_RX_LIST_ADDR,
1456 readl(iadev->dma + IPHASE5575_RX_LIST_ADDR));)
1457
1458 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1459 writew(0, iadev->reass_reg+MODE_REG);
1460 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1461
1462 /* Receive side control memory map
1463 -------------------------------
1464
1465 Buffer descr 0x0000 (736 - 23K)
1466 VP Table 0x5c00 (256 - 512)
1467 Except q 0x5e00 (128 - 512)
1468 Free buffer q 0x6000 (1K - 2K)
1469 Packet comp q 0x6800 (1K - 2K)
1470 Reass Table 0x7000 (1K - 2K)
1471 VC Table 0x7800 (1K - 2K)
1472 ABR VC Table 0x8000 (1K - 32K)
1473 */
1474
1475 /* Base address for Buffer Descriptor Table */
1476 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1477 /* Set the buffer size register */
1478 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1479
1480 /* Initialize each entry in the Buffer Descriptor Table */
1481 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1482 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1483 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1484 buf_desc_ptr++;
1485 rx_pkt_start = iadev->rx_pkt_ram;
1486 for(i=1; i<=iadev->num_rx_desc; i++)
1487 {
1488 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1489 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1490 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1491 buf_desc_ptr++;
1492 rx_pkt_start += iadev->rx_buf_sz;
1493 }
1494 IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n", buf_desc_ptr);)
1495 i = FREE_BUF_DESC_Q*iadev->memSize;
1496 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1497 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1498 writew(i+iadev->num_rx_desc*sizeof(u_short),
1499 iadev->reass_reg+FREEQ_ED_ADR);
1500 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1501 writew(i+iadev->num_rx_desc*sizeof(u_short),
1502 iadev->reass_reg+FREEQ_WR_PTR);
1503 /* Fill the FREEQ with all the free descriptors. */
1504 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1505 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1506 for(i=1; i<=iadev->num_rx_desc; i++)
1507 {
1508 *freeq_start = (u_short)i;
1509 freeq_start++;
1510 }
1511 IF_INIT(printk("freeq_start: 0x%p\n", freeq_start);)
1512 /* Packet Complete Queue */
1513 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1514 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1515 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1516 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1517 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1518
1519 /* Exception Queue */
1520 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1521 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1522 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1523 iadev->reass_reg+EXCP_Q_ED_ADR);
1524 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1525 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1526
1527 /* Load local copy of FREEQ and PCQ ptrs */
1528 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1529 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1530 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1531 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1532 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1533 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1534 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1535 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1536
1537 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1538 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1539 iadev->rfL.pcq_wr);)
1540 /* just for check - no VP TBL */
1541 /* VP Table */
1542 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1543 /* initialize VP Table for invalid VPIs
1544 - I guess we can write all 1s or 0x000f in the entire memory
1545 space or something similar.
1546 */
1547
1548 /* This seems to work and looks right to me too !!! */
1549 i = REASS_TABLE * iadev->memSize;
1550 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1551 /* initialize Reassembly table to I don't know what ???? */
1552 reass_table = (u16 *)(iadev->reass_ram+i);
1553 j = REASS_TABLE_SZ * iadev->memSize;
1554 for(i=0; i < j; i++)
1555 *reass_table++ = NO_AAL5_PKT;
1556 i = 8*1024;
1557 vcsize_sel = 0;
1558 while (i != iadev->num_vc) {
1559 i /= 2;
1560 vcsize_sel++;
1561 }
1562 i = RX_VC_TABLE * iadev->memSize;
1563 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1564 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1565 j = RX_VC_TABLE_SZ * iadev->memSize;
1566 for(i = 0; i < j; i++)
1567 {
1568 /* shift the reassembly pointer by 3 + lower 3 bits of
1569 vc_lkup_base register (=3 for 1K VCs) and the last byte
1570 is those low 3 bits.
1571 Shall program this later.
1572 */
1573 *vc_table = (i << 6) | 15; /* for invalid VCI */
1574 vc_table++;
1575 }
1576 /* ABR VC table */
1577 i = ABR_VC_TABLE * iadev->memSize;
1578 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1579
1580 i = ABR_VC_TABLE * iadev->memSize;
1581 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1582 j = REASS_TABLE_SZ * iadev->memSize;
1583 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1584 for(i = 0; i < j; i++) {
1585 abr_vc_table->rdf = 0x0003;
1586 abr_vc_table->air = 0x5eb1;
1587 abr_vc_table++;
1588 }
1589
1590 /* Initialize other registers */
1591
1592 /* VP Filter Register set for VC Reassembly only */
1593 writew(0xff00, iadev->reass_reg+VP_FILTER);
1594 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1595 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1596
1597 /* Packet Timeout Count related Registers :
1598 Set packet timeout to occur in about 3 seconds
1599 Set Packet Aging Interval count register to overflow in about 4 us
1600 */
1601 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
1602
1603 i = (j >> 6) & 0xFF;
1604 j += 2 * (j - 1);
1605 i |= ((j << 2) & 0xFF00);
1606 writew(i, iadev->reass_reg+TMOUT_RANGE);
1607
1608 /* initiate the desc_tble */
1609 for(i=0; i<iadev->num_tx_desc;i++)
1610 iadev->desc_tbl[i].timestamp = 0;
1611
1612 /* to clear the interrupt status register - read it */
1613 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1614
1615 /* Mask Register - clear it */
1616 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1617
1618 skb_queue_head_init(&iadev->rx_dma_q);
1619 iadev->rx_free_desc_qhead = NULL;
1620
1621 iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL);
1622 if (!iadev->rx_open) {
1623 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1624 dev->number);
1625 goto err_free_dle;
1626 }
1627
1628 iadev->rxing = 1;
1629 iadev->rx_pkt_cnt = 0;
1630 /* Mode Register */
1631 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1632 return 0;
1633
1634err_free_dle:
1635 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1636 iadev->rx_dle_dma);
1637err_out:
1638 return -ENOMEM;
1639}
1640
1641
1642/*
1643 The memory map suggested in appendix A and the coding for it.
1644 Keeping it around just in case we change our mind later.
1645
1646 Buffer descr 0x0000 (128 - 4K)
1647 UBR sched 0x1000 (1K - 4K)
1648 UBR Wait q 0x2000 (1K - 4K)
1649 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1650 (128 - 256) each
1651 extended VC 0x4000 (1K - 8K)
1652 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1653 CBR sched 0x7000 (as needed)
1654 VC table 0x8000 (1K - 32K)
1655*/
1656
1657static void tx_intr(struct atm_dev *dev)
1658{
1659 IADEV *iadev;
1660 unsigned short status;
1661 unsigned long flags;
1662
1663 iadev = INPH_IA_DEV(dev);
1664
1665 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1666 if (status & TRANSMIT_DONE){
1667
1668 IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1669 spin_lock_irqsave(&iadev->tx_lock, flags);
1670 ia_tx_poll(iadev);
1671 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1672 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1673 if (iadev->close_pending)
1674 wake_up(&iadev->close_wait);
1675 }
1676 if (status & TCQ_NOT_EMPTY)
1677 {
1678 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1679 }
1680}
1681
1682static void tx_dle_intr(struct atm_dev *dev)
1683{
1684 IADEV *iadev;
1685 struct dle *dle, *cur_dle;
1686 struct sk_buff *skb;
1687 struct atm_vcc *vcc;
1688 struct ia_vcc *iavcc;
1689 u_int dle_lp;
1690 unsigned long flags;
1691
1692 iadev = INPH_IA_DEV(dev);
1693 spin_lock_irqsave(&iadev->tx_lock, flags);
1694 dle = iadev->tx_dle_q.read;
1695 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1696 (sizeof(struct dle)*DLE_ENTRIES - 1);
1697 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1698 while (dle != cur_dle)
1699 {
1700 /* free the DMAed skb */
1701 skb = skb_dequeue(&iadev->tx_dma_q);
1702 if (!skb) break;
1703
1704 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1705 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1706 dma_unmap_single(&iadev->pci->dev, dle->sys_pkt_addr, skb->len,
1707 DMA_TO_DEVICE);
1708 }
1709 vcc = ATM_SKB(skb)->vcc;
1710 if (!vcc) {
1711 printk("tx_dle_intr: vcc is null\n");
1712 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1713 dev_kfree_skb_any(skb);
1714
1715 return;
1716 }
1717 iavcc = INPH_IA_VCC(vcc);
1718 if (!iavcc) {
1719 printk("tx_dle_intr: iavcc is null\n");
1720 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1721 dev_kfree_skb_any(skb);
1722 return;
1723 }
1724 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1725 if ((vcc->pop) && (skb->len != 0))
1726 {
1727 vcc->pop(vcc, skb);
1728 }
1729 else {
1730 dev_kfree_skb_any(skb);
1731 }
1732 }
1733 else { /* Hold the rate-limited skb for flow control */
1734 IA_SKB_STATE(skb) |= IA_DLED;
1735 skb_queue_tail(&iavcc->txing_skb, skb);
1736 }
1737 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n", skb);)
1738 if (++dle == iadev->tx_dle_q.end)
1739 dle = iadev->tx_dle_q.start;
1740 }
1741 iadev->tx_dle_q.read = dle;
1742 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1743}
1744
1745static int open_tx(struct atm_vcc *vcc)
1746{
1747 struct ia_vcc *ia_vcc;
1748 IADEV *iadev;
1749 struct main_vc *vc;
1750 struct ext_vc *evc;
1751 int ret;
1752 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1753 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1754 iadev = INPH_IA_DEV(vcc->dev);
1755
1756 if (iadev->phy_type & FE_25MBIT_PHY) {
1757 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1758 printk("IA: ABR not support\n");
1759 return -EINVAL;
1760 }
1761 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1762 printk("IA: CBR not support\n");
1763 return -EINVAL;
1764 }
1765 }
1766 ia_vcc = INPH_IA_VCC(vcc);
1767 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1768 if (vcc->qos.txtp.max_sdu >
1769 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1770 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1771 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1772 vcc->dev_data = NULL;
1773 kfree(ia_vcc);
1774 return -EINVAL;
1775 }
1776 ia_vcc->vc_desc_cnt = 0;
1777 ia_vcc->txing = 1;
1778
1779 /* find pcr */
1780 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1781 vcc->qos.txtp.pcr = iadev->LineRate;
1782 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1783 vcc->qos.txtp.pcr = iadev->LineRate;
1784 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1785 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1786 if (vcc->qos.txtp.pcr > iadev->LineRate)
1787 vcc->qos.txtp.pcr = iadev->LineRate;
1788 ia_vcc->pcr = vcc->qos.txtp.pcr;
1789
1790 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1791 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1792 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1793 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1794 if (ia_vcc->pcr < iadev->rate_limit)
1795 skb_queue_head_init (&ia_vcc->txing_skb);
1796 if (ia_vcc->pcr < iadev->rate_limit) {
1797 struct sock *sk = sk_atm(vcc);
1798
1799 if (vcc->qos.txtp.max_sdu != 0) {
1800 if (ia_vcc->pcr > 60000)
1801 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1802 else if (ia_vcc->pcr > 2000)
1803 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1804 else
1805 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1806 }
1807 else
1808 sk->sk_sndbuf = 24576;
1809 }
1810
1811 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1812 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1813 vc += vcc->vci;
1814 evc += vcc->vci;
1815 memset((caddr_t)vc, 0, sizeof(*vc));
1816 memset((caddr_t)evc, 0, sizeof(*evc));
1817
1818 /* store the most significant 4 bits of vci as the last 4 bits
1819 of first part of atm header.
1820 store the last 12 bits of vci as first 12 bits of the second
1821 part of the atm header.
1822 */
1823 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1824 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1825
1826 /* check the following for different traffic classes */
1827 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1828 {
1829 vc->type = UBR;
1830 vc->status = CRC_APPEND;
1831 vc->acr = cellrate_to_float(iadev->LineRate);
1832 if (vcc->qos.txtp.pcr > 0)
1833 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1834 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1835 vcc->qos.txtp.max_pcr,vc->acr);)
1836 }
1837 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1838 { srv_cls_param_t srv_p;
1839 IF_ABR(printk("Tx ABR VCC\n");)
1840 init_abr_vc(iadev, &srv_p);
1841 if (vcc->qos.txtp.pcr > 0)
1842 srv_p.pcr = vcc->qos.txtp.pcr;
1843 if (vcc->qos.txtp.min_pcr > 0) {
1844 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1845 if (tmpsum > iadev->LineRate)
1846 return -EBUSY;
1847 srv_p.mcr = vcc->qos.txtp.min_pcr;
1848 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1849 }
1850 else srv_p.mcr = 0;
1851 if (vcc->qos.txtp.icr)
1852 srv_p.icr = vcc->qos.txtp.icr;
1853 if (vcc->qos.txtp.tbe)
1854 srv_p.tbe = vcc->qos.txtp.tbe;
1855 if (vcc->qos.txtp.frtt)
1856 srv_p.frtt = vcc->qos.txtp.frtt;
1857 if (vcc->qos.txtp.rif)
1858 srv_p.rif = vcc->qos.txtp.rif;
1859 if (vcc->qos.txtp.rdf)
1860 srv_p.rdf = vcc->qos.txtp.rdf;
1861 if (vcc->qos.txtp.nrm_pres)
1862 srv_p.nrm = vcc->qos.txtp.nrm;
1863 if (vcc->qos.txtp.trm_pres)
1864 srv_p.trm = vcc->qos.txtp.trm;
1865 if (vcc->qos.txtp.adtf_pres)
1866 srv_p.adtf = vcc->qos.txtp.adtf;
1867 if (vcc->qos.txtp.cdf_pres)
1868 srv_p.cdf = vcc->qos.txtp.cdf;
1869 if (srv_p.icr > srv_p.pcr)
1870 srv_p.icr = srv_p.pcr;
1871 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1872 srv_p.pcr, srv_p.mcr);)
1873 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1874 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1875 if (iadev->phy_type & FE_25MBIT_PHY) {
1876 printk("IA: CBR not support\n");
1877 return -EINVAL;
1878 }
1879 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1880 IF_CBR(printk("PCR is not available\n");)
1881 return -1;
1882 }
1883 vc->type = CBR;
1884 vc->status = CRC_APPEND;
1885 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1886 return ret;
1887 }
1888 }
1889 else
1890 printk("iadev: Non UBR, ABR and CBR traffic not supportedn");
1891
1892 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1893 IF_EVENT(printk("ia open_tx returning \n");)
1894 return 0;
1895}
1896
1897
1898static int tx_init(struct atm_dev *dev)
1899{
1900 IADEV *iadev;
1901 struct tx_buf_desc *buf_desc_ptr;
1902 unsigned int tx_pkt_start;
1903 void *dle_addr;
1904 int i;
1905 u_short tcq_st_adr;
1906 u_short *tcq_start;
1907 u_short prq_st_adr;
1908 u_short *prq_start;
1909 struct main_vc *vc;
1910 struct ext_vc *evc;
1911 u_short tmp16;
1912 u32 vcsize_sel;
1913
1914 iadev = INPH_IA_DEV(dev);
1915 spin_lock_init(&iadev->tx_lock);
1916
1917 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1918 readw(iadev->seg_reg+SEG_MASK_REG));)
1919
1920 /* Allocate 4k (boundary aligned) bytes */
1921 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1922 &iadev->tx_dle_dma, GFP_KERNEL);
1923 if (!dle_addr) {
1924 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1925 goto err_out;
1926 }
1927 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1928 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1929 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
1930 iadev->tx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1931
1932 /* write the upper 20 bits of the start address to tx list address register */
1933 writel(iadev->tx_dle_dma & 0xfffff000,
1934 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1935 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1936 writew(0, iadev->seg_reg+MODE_REG_0);
1937 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1938 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1939 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1940 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1941
1942 /*
1943 Transmit side control memory map
1944 --------------------------------
1945 Buffer descr 0x0000 (128 - 4K)
1946 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1947 (512 - 1K) each
1948 TCQ - 4K, PRQ - 5K
1949 CBR Table 0x1800 (as needed) - 6K
1950 UBR Table 0x3000 (1K - 4K) - 12K
1951 UBR Wait queue 0x4000 (1K - 4K) - 16K
1952 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1953 ABR Tbl - 20K, ABR Wq - 22K
1954 extended VC 0x6000 (1K - 8K) - 24K
1955 VC Table 0x8000 (1K - 32K) - 32K
1956
1957 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1958 and Wait q, which can be allotted later.
1959 */
1960
1961 /* Buffer Descriptor Table Base address */
1962 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1963
1964 /* initialize each entry in the buffer descriptor table */
1965 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1966 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1967 buf_desc_ptr++;
1968 tx_pkt_start = TX_PACKET_RAM;
1969 for(i=1; i<=iadev->num_tx_desc; i++)
1970 {
1971 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1972 buf_desc_ptr->desc_mode = AAL5;
1973 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1974 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1975 buf_desc_ptr++;
1976 tx_pkt_start += iadev->tx_buf_sz;
1977 }
1978 iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1979 if (!iadev->tx_buf) {
1980 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1981 goto err_free_dle;
1982 }
1983 for (i= 0; i< iadev->num_tx_desc; i++)
1984 {
1985 struct cpcs_trailer *cpcs;
1986
1987 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1988 if(!cpcs) {
1989 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1990 goto err_free_tx_bufs;
1991 }
1992 iadev->tx_buf[i].cpcs = cpcs;
1993 iadev->tx_buf[i].dma_addr = dma_map_single(&iadev->pci->dev,
1994 cpcs,
1995 sizeof(*cpcs),
1996 DMA_TO_DEVICE);
1997 }
1998 iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1999 sizeof(struct desc_tbl_t), GFP_KERNEL);
2000 if (!iadev->desc_tbl) {
2001 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
2002 goto err_free_all_tx_bufs;
2003 }
2004
2005 /* Communication Queues base address */
2006 i = TX_COMP_Q * iadev->memSize;
2007 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
2008
2009 /* Transmit Complete Queue */
2010 writew(i, iadev->seg_reg+TCQ_ST_ADR);
2011 writew(i, iadev->seg_reg+TCQ_RD_PTR);
2012 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
2013 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
2014 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2015 iadev->seg_reg+TCQ_ED_ADR);
2016 /* Fill the TCQ with all the free descriptors. */
2017 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
2018 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
2019 for(i=1; i<=iadev->num_tx_desc; i++)
2020 {
2021 *tcq_start = (u_short)i;
2022 tcq_start++;
2023 }
2024
2025 /* Packet Ready Queue */
2026 i = PKT_RDY_Q * iadev->memSize;
2027 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2028 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2029 iadev->seg_reg+PRQ_ED_ADR);
2030 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2031 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2032
2033 /* Load local copy of PRQ and TCQ ptrs */
2034 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2035 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2036 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2037
2038 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2039 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2040 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2041
2042 /* Just for safety initializing the queue to have desc 1 always */
2043 /* Fill the PRQ with all the free descriptors. */
2044 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2045 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2046 for(i=1; i<=iadev->num_tx_desc; i++)
2047 {
2048 *prq_start = (u_short)0; /* desc 1 in all entries */
2049 prq_start++;
2050 }
2051 /* CBR Table */
2052 IF_INIT(printk("Start CBR Init\n");)
2053#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2054 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2055#else /* Charlie's logic is wrong ? */
2056 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2057 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2058 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2059#endif
2060
2061 IF_INIT(printk("value in register = 0x%x\n",
2062 readw(iadev->seg_reg+CBR_PTR_BASE));)
2063 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2064 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2065 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2066 readw(iadev->seg_reg+CBR_TAB_BEG));)
2067 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2068 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2069 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
2070 IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n",
2071 iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
2072 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2073 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2074 readw(iadev->seg_reg+CBR_TAB_END+1));)
2075
2076 /* Initialize the CBR Schedualing Table */
2077 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2078 0, iadev->num_vc*6);
2079 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2080 iadev->CbrEntryPt = 0;
2081 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2082 iadev->NumEnabledCBR = 0;
2083
2084 /* UBR scheduling Table and wait queue */
2085 /* initialize all bytes of UBR scheduler table and wait queue to 0
2086 - SCHEDSZ is 1K (# of entries).
2087 - UBR Table size is 4K
2088 - UBR wait queue is 4K
2089 since the table and wait queues are contiguous, all the bytes
2090 can be initialized by one memeset.
2091 */
2092
2093 vcsize_sel = 0;
2094 i = 8*1024;
2095 while (i != iadev->num_vc) {
2096 i /= 2;
2097 vcsize_sel++;
2098 }
2099
2100 i = MAIN_VC_TABLE * iadev->memSize;
2101 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2102 i = EXT_VC_TABLE * iadev->memSize;
2103 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2104 i = UBR_SCHED_TABLE * iadev->memSize;
2105 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2106 i = UBR_WAIT_Q * iadev->memSize;
2107 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2108 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2109 0, iadev->num_vc*8);
2110 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2111 /* initialize all bytes of ABR scheduler table and wait queue to 0
2112 - SCHEDSZ is 1K (# of entries).
2113 - ABR Table size is 2K
2114 - ABR wait queue is 2K
2115 since the table and wait queues are contiguous, all the bytes
2116 can be initialized by one memeset.
2117 */
2118 i = ABR_SCHED_TABLE * iadev->memSize;
2119 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2120 i = ABR_WAIT_Q * iadev->memSize;
2121 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2122
2123 i = ABR_SCHED_TABLE*iadev->memSize;
2124 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2125 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2126 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2127 iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2128 if (!iadev->testTable) {
2129 printk("Get freepage failed\n");
2130 goto err_free_desc_tbl;
2131 }
2132 for(i=0; i<iadev->num_vc; i++)
2133 {
2134 memset((caddr_t)vc, 0, sizeof(*vc));
2135 memset((caddr_t)evc, 0, sizeof(*evc));
2136 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2137 GFP_KERNEL);
2138 if (!iadev->testTable[i])
2139 goto err_free_test_tables;
2140 iadev->testTable[i]->lastTime = 0;
2141 iadev->testTable[i]->fract = 0;
2142 iadev->testTable[i]->vc_status = VC_UBR;
2143 vc++;
2144 evc++;
2145 }
2146
2147 /* Other Initialization */
2148
2149 /* Max Rate Register */
2150 if (iadev->phy_type & FE_25MBIT_PHY) {
2151 writew(RATE25, iadev->seg_reg+MAXRATE);
2152 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2153 }
2154 else {
2155 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2156 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2157 }
2158 /* Set Idle Header Reigisters to be sure */
2159 writew(0, iadev->seg_reg+IDLEHEADHI);
2160 writew(0, iadev->seg_reg+IDLEHEADLO);
2161
2162 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2163 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2164
2165 iadev->close_pending = 0;
2166 init_waitqueue_head(&iadev->close_wait);
2167 init_waitqueue_head(&iadev->timeout_wait);
2168 skb_queue_head_init(&iadev->tx_dma_q);
2169 ia_init_rtn_q(&iadev->tx_return_q);
2170
2171 /* RM Cell Protocol ID and Message Type */
2172 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2173 skb_queue_head_init (&iadev->tx_backlog);
2174
2175 /* Mode Register 1 */
2176 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2177
2178 /* Mode Register 0 */
2179 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2180
2181 /* Interrupt Status Register - read to clear */
2182 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2183
2184 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2185 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2186 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2187 iadev->tx_pkt_cnt = 0;
2188 iadev->rate_limit = iadev->LineRate / 3;
2189
2190 return 0;
2191
2192err_free_test_tables:
2193 while (--i >= 0)
2194 kfree(iadev->testTable[i]);
2195 kfree(iadev->testTable);
2196err_free_desc_tbl:
2197 kfree(iadev->desc_tbl);
2198err_free_all_tx_bufs:
2199 i = iadev->num_tx_desc;
2200err_free_tx_bufs:
2201 while (--i >= 0) {
2202 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2203
2204 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2205 sizeof(*desc->cpcs), DMA_TO_DEVICE);
2206 kfree(desc->cpcs);
2207 }
2208 kfree(iadev->tx_buf);
2209err_free_dle:
2210 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2211 iadev->tx_dle_dma);
2212err_out:
2213 return -ENOMEM;
2214}
2215
2216static irqreturn_t ia_int(int irq, void *dev_id)
2217{
2218 struct atm_dev *dev;
2219 IADEV *iadev;
2220 unsigned int status;
2221 int handled = 0;
2222
2223 dev = dev_id;
2224 iadev = INPH_IA_DEV(dev);
2225 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2226 {
2227 handled = 1;
2228 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2229 if (status & STAT_REASSINT)
2230 {
2231 /* do something */
2232 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2233 rx_intr(dev);
2234 }
2235 if (status & STAT_DLERINT)
2236 {
2237 /* Clear this bit by writing a 1 to it. */
2238 writel(STAT_DLERINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
2239 rx_dle_intr(dev);
2240 }
2241 if (status & STAT_SEGINT)
2242 {
2243 /* do something */
2244 IF_EVENT(printk("IA: tx_intr \n");)
2245 tx_intr(dev);
2246 }
2247 if (status & STAT_DLETINT)
2248 {
2249 writel(STAT_DLETINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
2250 tx_dle_intr(dev);
2251 }
2252 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2253 {
2254 if (status & STAT_FEINT)
2255 ia_frontend_intr(iadev);
2256 }
2257 }
2258 return IRQ_RETVAL(handled);
2259}
2260
2261
2262
2263/*----------------------------- entries --------------------------------*/
2264static int get_esi(struct atm_dev *dev)
2265{
2266 IADEV *iadev;
2267 int i;
2268 u32 mac1;
2269 u16 mac2;
2270
2271 iadev = INPH_IA_DEV(dev);
2272 mac1 = cpu_to_be32(le32_to_cpu(readl(
2273 iadev->reg+IPHASE5575_MAC1)));
2274 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2275 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2276 for (i=0; i<MAC1_LEN; i++)
2277 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2278
2279 for (i=0; i<MAC2_LEN; i++)
2280 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2281 return 0;
2282}
2283
2284static int reset_sar(struct atm_dev *dev)
2285{
2286 IADEV *iadev;
2287 int i, error = 1;
2288 unsigned int pci[64];
2289
2290 iadev = INPH_IA_DEV(dev);
2291 for(i=0; i<64; i++)
2292 if ((error = pci_read_config_dword(iadev->pci,
2293 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2294 return error;
2295 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2296 for(i=0; i<64; i++)
2297 if ((error = pci_write_config_dword(iadev->pci,
2298 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2299 return error;
2300 udelay(5);
2301 return 0;
2302}
2303
2304
2305static int ia_init(struct atm_dev *dev)
2306{
2307 IADEV *iadev;
2308 unsigned long real_base;
2309 void __iomem *base;
2310 unsigned short command;
2311 int error, i;
2312
2313 /* The device has been identified and registered. Now we read
2314 necessary configuration info like memory base address,
2315 interrupt number etc */
2316
2317 IF_INIT(printk(">ia_init\n");)
2318 dev->ci_range.vpi_bits = 0;
2319 dev->ci_range.vci_bits = NR_VCI_LD;
2320
2321 iadev = INPH_IA_DEV(dev);
2322 real_base = pci_resource_start (iadev->pci, 0);
2323 iadev->irq = iadev->pci->irq;
2324
2325 error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2326 if (error) {
2327 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2328 dev->number,error);
2329 return -EINVAL;
2330 }
2331 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
2332 dev->number, iadev->pci->revision, real_base, iadev->irq);)
2333
2334 /* find mapping size of board */
2335
2336 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2337
2338 if (iadev->pci_map_size == 0x100000){
2339 iadev->num_vc = 4096;
2340 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2341 iadev->memSize = 4;
2342 }
2343 else if (iadev->pci_map_size == 0x40000) {
2344 iadev->num_vc = 1024;
2345 iadev->memSize = 1;
2346 }
2347 else {
2348 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2349 return -EINVAL;
2350 }
2351 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2352
2353 /* enable bus mastering */
2354 pci_set_master(iadev->pci);
2355
2356 /*
2357 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2358 */
2359 udelay(10);
2360
2361 /* mapping the physical address to a virtual address in address space */
2362 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2363
2364 if (!base)
2365 {
2366 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2367 dev->number);
2368 return -ENOMEM;
2369 }
2370 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
2371 dev->number, iadev->pci->revision, base, iadev->irq);)
2372
2373 /* filling the iphase dev structure */
2374 iadev->mem = iadev->pci_map_size /2;
2375 iadev->real_base = real_base;
2376 iadev->base = base;
2377
2378 /* Bus Interface Control Registers */
2379 iadev->reg = base + REG_BASE;
2380 /* Segmentation Control Registers */
2381 iadev->seg_reg = base + SEG_BASE;
2382 /* Reassembly Control Registers */
2383 iadev->reass_reg = base + REASS_BASE;
2384 /* Front end/ DMA control registers */
2385 iadev->phy = base + PHY_BASE;
2386 iadev->dma = base + PHY_BASE;
2387 /* RAM - Segmentation RAm and Reassembly RAM */
2388 iadev->ram = base + ACTUAL_RAM_BASE;
2389 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2390 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2391
2392 /* lets print out the above */
2393 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2394 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2395 iadev->phy, iadev->ram, iadev->seg_ram,
2396 iadev->reass_ram);)
2397
2398 /* lets try reading the MAC address */
2399 error = get_esi(dev);
2400 if (error) {
2401 iounmap(iadev->base);
2402 return error;
2403 }
2404 printk("IA: ");
2405 for (i=0; i < ESI_LEN; i++)
2406 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2407 printk("\n");
2408
2409 /* reset SAR */
2410 if (reset_sar(dev)) {
2411 iounmap(iadev->base);
2412 printk("IA: reset SAR fail, please try again\n");
2413 return 1;
2414 }
2415 return 0;
2416}
2417
2418static void ia_update_stats(IADEV *iadev) {
2419 if (!iadev->carrier_detect)
2420 return;
2421 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2422 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2423 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2424 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2425 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2426 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2427 return;
2428}
2429
2430static void ia_led_timer(unsigned long arg) {
2431 unsigned long flags;
2432 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2433 u_char i;
2434 static u32 ctrl_reg;
2435 for (i = 0; i < iadev_count; i++) {
2436 if (ia_dev[i]) {
2437 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2438 if (blinking[i] == 0) {
2439 blinking[i]++;
2440 ctrl_reg &= (~CTRL_LED);
2441 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2442 ia_update_stats(ia_dev[i]);
2443 }
2444 else {
2445 blinking[i] = 0;
2446 ctrl_reg |= CTRL_LED;
2447 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2448 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2449 if (ia_dev[i]->close_pending)
2450 wake_up(&ia_dev[i]->close_wait);
2451 ia_tx_poll(ia_dev[i]);
2452 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2453 }
2454 }
2455 }
2456 mod_timer(&ia_timer, jiffies + HZ / 4);
2457 return;
2458}
2459
2460static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2461 unsigned long addr)
2462{
2463 writel(value, INPH_IA_DEV(dev)->phy+addr);
2464}
2465
2466static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2467{
2468 return readl(INPH_IA_DEV(dev)->phy+addr);
2469}
2470
2471static void ia_free_tx(IADEV *iadev)
2472{
2473 int i;
2474
2475 kfree(iadev->desc_tbl);
2476 for (i = 0; i < iadev->num_vc; i++)
2477 kfree(iadev->testTable[i]);
2478 kfree(iadev->testTable);
2479 for (i = 0; i < iadev->num_tx_desc; i++) {
2480 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2481
2482 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2483 sizeof(*desc->cpcs), DMA_TO_DEVICE);
2484 kfree(desc->cpcs);
2485 }
2486 kfree(iadev->tx_buf);
2487 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2488 iadev->tx_dle_dma);
2489}
2490
2491static void ia_free_rx(IADEV *iadev)
2492{
2493 kfree(iadev->rx_open);
2494 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2495 iadev->rx_dle_dma);
2496}
2497
2498static int ia_start(struct atm_dev *dev)
2499{
2500 IADEV *iadev;
2501 int error;
2502 unsigned char phy;
2503 u32 ctrl_reg;
2504 IF_EVENT(printk(">ia_start\n");)
2505 iadev = INPH_IA_DEV(dev);
2506 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
2507 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2508 dev->number, iadev->irq);
2509 error = -EAGAIN;
2510 goto err_out;
2511 }
2512 /* @@@ should release IRQ on error */
2513 /* enabling memory + master */
2514 if ((error = pci_write_config_word(iadev->pci,
2515 PCI_COMMAND,
2516 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2517 {
2518 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2519 "master (0x%x)\n",dev->number, error);
2520 error = -EIO;
2521 goto err_free_irq;
2522 }
2523 udelay(10);
2524
2525 /* Maybe we should reset the front end, initialize Bus Interface Control
2526 Registers and see. */
2527
2528 IF_INIT(printk("Bus ctrl reg: %08x\n",
2529 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2530 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2531 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2532 | CTRL_B8
2533 | CTRL_B16
2534 | CTRL_B32
2535 | CTRL_B48
2536 | CTRL_B64
2537 | CTRL_B128
2538 | CTRL_ERRMASK
2539 | CTRL_DLETMASK /* shud be removed l8r */
2540 | CTRL_DLERMASK
2541 | CTRL_SEGMASK
2542 | CTRL_REASSMASK
2543 | CTRL_FEMASK
2544 | CTRL_CSPREEMPT;
2545
2546 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2547
2548 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2549 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2550 printk("Bus status reg after init: %08x\n",
2551 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2552
2553 ia_hw_type(iadev);
2554 error = tx_init(dev);
2555 if (error)
2556 goto err_free_irq;
2557 error = rx_init(dev);
2558 if (error)
2559 goto err_free_tx;
2560
2561 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2562 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2563 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2564 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2565 phy = 0; /* resolve compiler complaint */
2566 IF_INIT (
2567 if ((phy=ia_phy_get(dev,0)) == 0x30)
2568 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2569 else
2570 printk("IA: utopia,rev.%0x\n",phy);)
2571
2572 if (iadev->phy_type & FE_25MBIT_PHY)
2573 ia_mb25_init(iadev);
2574 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2575 ia_suni_pm7345_init(iadev);
2576 else {
2577 error = suni_init(dev);
2578 if (error)
2579 goto err_free_rx;
2580 if (dev->phy->start) {
2581 error = dev->phy->start(dev);
2582 if (error)
2583 goto err_free_rx;
2584 }
2585 /* Get iadev->carrier_detect status */
2586 ia_frontend_intr(iadev);
2587 }
2588 return 0;
2589
2590err_free_rx:
2591 ia_free_rx(iadev);
2592err_free_tx:
2593 ia_free_tx(iadev);
2594err_free_irq:
2595 free_irq(iadev->irq, dev);
2596err_out:
2597 return error;
2598}
2599
2600static void ia_close(struct atm_vcc *vcc)
2601{
2602 DEFINE_WAIT(wait);
2603 u16 *vc_table;
2604 IADEV *iadev;
2605 struct ia_vcc *ia_vcc;
2606 struct sk_buff *skb = NULL;
2607 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2608 unsigned long closetime, flags;
2609
2610 iadev = INPH_IA_DEV(vcc->dev);
2611 ia_vcc = INPH_IA_VCC(vcc);
2612 if (!ia_vcc) return;
2613
2614 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2615 ia_vcc->vc_desc_cnt,vcc->vci);)
2616 clear_bit(ATM_VF_READY,&vcc->flags);
2617 skb_queue_head_init (&tmp_tx_backlog);
2618 skb_queue_head_init (&tmp_vcc_backlog);
2619 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2620 iadev->close_pending++;
2621 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2622 schedule_timeout(msecs_to_jiffies(500));
2623 finish_wait(&iadev->timeout_wait, &wait);
2624 spin_lock_irqsave(&iadev->tx_lock, flags);
2625 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2626 if (ATM_SKB(skb)->vcc == vcc){
2627 if (vcc->pop) vcc->pop(vcc, skb);
2628 else dev_kfree_skb_any(skb);
2629 }
2630 else
2631 skb_queue_tail(&tmp_tx_backlog, skb);
2632 }
2633 while((skb = skb_dequeue(&tmp_tx_backlog)))
2634 skb_queue_tail(&iadev->tx_backlog, skb);
2635 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2636 closetime = 300000 / ia_vcc->pcr;
2637 if (closetime == 0)
2638 closetime = 1;
2639 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2640 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2641 spin_lock_irqsave(&iadev->tx_lock, flags);
2642 iadev->close_pending--;
2643 iadev->testTable[vcc->vci]->lastTime = 0;
2644 iadev->testTable[vcc->vci]->fract = 0;
2645 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2646 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2647 if (vcc->qos.txtp.min_pcr > 0)
2648 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2649 }
2650 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2651 ia_vcc = INPH_IA_VCC(vcc);
2652 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2653 ia_cbrVc_close (vcc);
2654 }
2655 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2656 }
2657
2658 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2659 // reset reass table
2660 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2661 vc_table += vcc->vci;
2662 *vc_table = NO_AAL5_PKT;
2663 // reset vc table
2664 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2665 vc_table += vcc->vci;
2666 *vc_table = (vcc->vci << 6) | 15;
2667 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2668 struct abr_vc_table __iomem *abr_vc_table =
2669 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2670 abr_vc_table += vcc->vci;
2671 abr_vc_table->rdf = 0x0003;
2672 abr_vc_table->air = 0x5eb1;
2673 }
2674 // Drain the packets
2675 rx_dle_intr(vcc->dev);
2676 iadev->rx_open[vcc->vci] = NULL;
2677 }
2678 kfree(INPH_IA_VCC(vcc));
2679 ia_vcc = NULL;
2680 vcc->dev_data = NULL;
2681 clear_bit(ATM_VF_ADDR,&vcc->flags);
2682 return;
2683}
2684
2685static int ia_open(struct atm_vcc *vcc)
2686{
2687 struct ia_vcc *ia_vcc;
2688 int error;
2689 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2690 {
2691 IF_EVENT(printk("ia: not partially allocated resources\n");)
2692 vcc->dev_data = NULL;
2693 }
2694 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2695 {
2696 IF_EVENT(printk("iphase open: unspec part\n");)
2697 set_bit(ATM_VF_ADDR,&vcc->flags);
2698 }
2699 if (vcc->qos.aal != ATM_AAL5)
2700 return -EINVAL;
2701 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2702 vcc->dev->number, vcc->vpi, vcc->vci);)
2703
2704 /* Device dependent initialization */
2705 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2706 if (!ia_vcc) return -ENOMEM;
2707 vcc->dev_data = ia_vcc;
2708
2709 if ((error = open_rx(vcc)))
2710 {
2711 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2712 ia_close(vcc);
2713 return error;
2714 }
2715
2716 if ((error = open_tx(vcc)))
2717 {
2718 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2719 ia_close(vcc);
2720 return error;
2721 }
2722
2723 set_bit(ATM_VF_READY,&vcc->flags);
2724
2725#if 0
2726 {
2727 static u8 first = 1;
2728 if (first) {
2729 ia_timer.expires = jiffies + 3*HZ;
2730 add_timer(&ia_timer);
2731 first = 0;
2732 }
2733 }
2734#endif
2735 IF_EVENT(printk("ia open returning\n");)
2736 return 0;
2737}
2738
2739static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2740{
2741 IF_EVENT(printk(">ia_change_qos\n");)
2742 return 0;
2743}
2744
2745static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2746{
2747 IA_CMDBUF ia_cmds;
2748 IADEV *iadev;
2749 int i, board;
2750 u16 __user *tmps;
2751 IF_EVENT(printk(">ia_ioctl\n");)
2752 if (cmd != IA_CMD) {
2753 if (!dev->phy->ioctl) return -EINVAL;
2754 return dev->phy->ioctl(dev,cmd,arg);
2755 }
2756 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2757 board = ia_cmds.status;
2758 if ((board < 0) || (board > iadev_count))
2759 board = 0;
2760 iadev = ia_dev[board];
2761 switch (ia_cmds.cmd) {
2762 case MEMDUMP:
2763 {
2764 switch (ia_cmds.sub_cmd) {
2765 case MEMDUMP_DEV:
2766 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2767 if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2768 return -EFAULT;
2769 ia_cmds.status = 0;
2770 break;
2771 case MEMDUMP_SEGREG:
2772 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2773 tmps = (u16 __user *)ia_cmds.buf;
2774 for(i=0; i<0x80; i+=2, tmps++)
2775 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2776 ia_cmds.status = 0;
2777 ia_cmds.len = 0x80;
2778 break;
2779 case MEMDUMP_REASSREG:
2780 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2781 tmps = (u16 __user *)ia_cmds.buf;
2782 for(i=0; i<0x80; i+=2, tmps++)
2783 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2784 ia_cmds.status = 0;
2785 ia_cmds.len = 0x80;
2786 break;
2787 case MEMDUMP_FFL:
2788 {
2789 ia_regs_t *regs_local;
2790 ffredn_t *ffL;
2791 rfredn_t *rfL;
2792
2793 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2794 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2795 if (!regs_local) return -ENOMEM;
2796 ffL = ®s_local->ffredn;
2797 rfL = ®s_local->rfredn;
2798 /* Copy real rfred registers into the local copy */
2799 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2800 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2801 /* Copy real ffred registers into the local copy */
2802 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2803 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2804
2805 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2806 kfree(regs_local);
2807 return -EFAULT;
2808 }
2809 kfree(regs_local);
2810 printk("Board %d registers dumped\n", board);
2811 ia_cmds.status = 0;
2812 }
2813 break;
2814 case READ_REG:
2815 {
2816 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2817 desc_dbg(iadev);
2818 ia_cmds.status = 0;
2819 }
2820 break;
2821 case 0x6:
2822 {
2823 ia_cmds.status = 0;
2824 printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2825 printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2826 }
2827 break;
2828 case 0x8:
2829 {
2830 struct k_sonet_stats *stats;
2831 stats = &PRIV(_ia_dev[board])->sonet_stats;
2832 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2833 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2834 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2835 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2836 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2837 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2838 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2839 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2840 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2841 }
2842 ia_cmds.status = 0;
2843 break;
2844 case 0x9:
2845 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2846 for (i = 1; i <= iadev->num_rx_desc; i++)
2847 free_desc(_ia_dev[board], i);
2848 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2849 iadev->reass_reg+REASS_MASK_REG);
2850 iadev->rxing = 1;
2851
2852 ia_cmds.status = 0;
2853 break;
2854
2855 case 0xb:
2856 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2857 ia_frontend_intr(iadev);
2858 break;
2859 case 0xa:
2860 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2861 {
2862 ia_cmds.status = 0;
2863 IADebugFlag = ia_cmds.maddr;
2864 printk("New debug option loaded\n");
2865 }
2866 break;
2867 default:
2868 ia_cmds.status = 0;
2869 break;
2870 }
2871 }
2872 break;
2873 default:
2874 break;
2875
2876 }
2877 return 0;
2878}
2879
2880static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2881 void __user *optval, int optlen)
2882{
2883 IF_EVENT(printk(">ia_getsockopt\n");)
2884 return -EINVAL;
2885}
2886
2887static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
2888 void __user *optval, unsigned int optlen)
2889{
2890 IF_EVENT(printk(">ia_setsockopt\n");)
2891 return -EINVAL;
2892}
2893
2894static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2895 IADEV *iadev;
2896 struct dle *wr_ptr;
2897 struct tx_buf_desc __iomem *buf_desc_ptr;
2898 int desc;
2899 int comp_code;
2900 int total_len;
2901 struct cpcs_trailer *trailer;
2902 struct ia_vcc *iavcc;
2903
2904 iadev = INPH_IA_DEV(vcc->dev);
2905 iavcc = INPH_IA_VCC(vcc);
2906 if (!iavcc->txing) {
2907 printk("discard packet on closed VC\n");
2908 if (vcc->pop)
2909 vcc->pop(vcc, skb);
2910 else
2911 dev_kfree_skb_any(skb);
2912 return 0;
2913 }
2914
2915 if (skb->len > iadev->tx_buf_sz - 8) {
2916 printk("Transmit size over tx buffer size\n");
2917 if (vcc->pop)
2918 vcc->pop(vcc, skb);
2919 else
2920 dev_kfree_skb_any(skb);
2921 return 0;
2922 }
2923 if ((unsigned long)skb->data & 3) {
2924 printk("Misaligned SKB\n");
2925 if (vcc->pop)
2926 vcc->pop(vcc, skb);
2927 else
2928 dev_kfree_skb_any(skb);
2929 return 0;
2930 }
2931 /* Get a descriptor number from our free descriptor queue
2932 We get the descr number from the TCQ now, since I am using
2933 the TCQ as a free buffer queue. Initially TCQ will be
2934 initialized with all the descriptors and is hence, full.
2935 */
2936 desc = get_desc (iadev, iavcc);
2937 if (desc == 0xffff)
2938 return 1;
2939 comp_code = desc >> 13;
2940 desc &= 0x1fff;
2941
2942 if ((desc == 0) || (desc > iadev->num_tx_desc))
2943 {
2944 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2945 atomic_inc(&vcc->stats->tx);
2946 if (vcc->pop)
2947 vcc->pop(vcc, skb);
2948 else
2949 dev_kfree_skb_any(skb);
2950 return 0; /* return SUCCESS */
2951 }
2952
2953 if (comp_code)
2954 {
2955 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2956 desc, comp_code);)
2957 }
2958
2959 /* remember the desc and vcc mapping */
2960 iavcc->vc_desc_cnt++;
2961 iadev->desc_tbl[desc-1].iavcc = iavcc;
2962 iadev->desc_tbl[desc-1].txskb = skb;
2963 IA_SKB_STATE(skb) = 0;
2964
2965 iadev->ffL.tcq_rd += 2;
2966 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2967 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2968 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2969
2970 /* Put the descriptor number in the packet ready queue
2971 and put the updated write pointer in the DLE field
2972 */
2973 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2974
2975 iadev->ffL.prq_wr += 2;
2976 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2977 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2978
2979 /* Figure out the exact length of the packet and padding required to
2980 make it aligned on a 48 byte boundary. */
2981 total_len = skb->len + sizeof(struct cpcs_trailer);
2982 total_len = ((total_len + 47) / 48) * 48;
2983 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2984
2985 /* Put the packet in a tx buffer */
2986 trailer = iadev->tx_buf[desc-1].cpcs;
2987 IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n",
2988 skb, skb->data, skb->len, desc);)
2989 trailer->control = 0;
2990 /*big endian*/
2991 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2992 trailer->crc32 = 0; /* not needed - dummy bytes */
2993
2994 /* Display the packet */
2995 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2996 skb->len, tcnter++);
2997 xdump(skb->data, skb->len, "TX: ");
2998 printk("\n");)
2999
3000 /* Build the buffer descriptor */
3001 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
3002 buf_desc_ptr += desc; /* points to the corresponding entry */
3003 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
3004 /* Huh ? p.115 of users guide describes this as a read-only register */
3005 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
3006 buf_desc_ptr->vc_index = vcc->vci;
3007 buf_desc_ptr->bytes = total_len;
3008
3009 if (vcc->qos.txtp.traffic_class == ATM_ABR)
3010 clear_lockup (vcc, iadev);
3011
3012 /* Build the DLE structure */
3013 wr_ptr = iadev->tx_dle_q.write;
3014 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
3015 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
3016 skb->len, DMA_TO_DEVICE);
3017 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
3018 buf_desc_ptr->buf_start_lo;
3019 /* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
3020 wr_ptr->bytes = skb->len;
3021
3022 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3023 if ((wr_ptr->bytes >> 2) == 0xb)
3024 wr_ptr->bytes = 0x30;
3025
3026 wr_ptr->mode = TX_DLE_PSI;
3027 wr_ptr->prq_wr_ptr_data = 0;
3028
3029 /* end is not to be used for the DLE q */
3030 if (++wr_ptr == iadev->tx_dle_q.end)
3031 wr_ptr = iadev->tx_dle_q.start;
3032
3033 /* Build trailer dle */
3034 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3035 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3036 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3037
3038 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3039 wr_ptr->mode = DMA_INT_ENABLE;
3040 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3041
3042 /* end is not to be used for the DLE q */
3043 if (++wr_ptr == iadev->tx_dle_q.end)
3044 wr_ptr = iadev->tx_dle_q.start;
3045
3046 iadev->tx_dle_q.write = wr_ptr;
3047 ATM_DESC(skb) = vcc->vci;
3048 skb_queue_tail(&iadev->tx_dma_q, skb);
3049
3050 atomic_inc(&vcc->stats->tx);
3051 iadev->tx_pkt_cnt++;
3052 /* Increment transaction counter */
3053 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3054
3055#if 0
3056 /* add flow control logic */
3057 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3058 if (iavcc->vc_desc_cnt > 10) {
3059 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3060 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3061 iavcc->flow_inc = -1;
3062 iavcc->saved_tx_quota = vcc->tx_quota;
3063 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3064 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3065 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3066 iavcc->flow_inc = 0;
3067 }
3068 }
3069#endif
3070 IF_TX(printk("ia send done\n");)
3071 return 0;
3072}
3073
3074static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3075{
3076 IADEV *iadev;
3077 unsigned long flags;
3078
3079 iadev = INPH_IA_DEV(vcc->dev);
3080 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3081 {
3082 if (!skb)
3083 printk(KERN_CRIT "null skb in ia_send\n");
3084 else dev_kfree_skb_any(skb);
3085 return -EINVAL;
3086 }
3087 spin_lock_irqsave(&iadev->tx_lock, flags);
3088 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3089 dev_kfree_skb_any(skb);
3090 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3091 return -EINVAL;
3092 }
3093 ATM_SKB(skb)->vcc = vcc;
3094
3095 if (skb_peek(&iadev->tx_backlog)) {
3096 skb_queue_tail(&iadev->tx_backlog, skb);
3097 }
3098 else {
3099 if (ia_pkt_tx (vcc, skb)) {
3100 skb_queue_tail(&iadev->tx_backlog, skb);
3101 }
3102 }
3103 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3104 return 0;
3105
3106}
3107
3108static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3109{
3110 int left = *pos, n;
3111 char *tmpPtr;
3112 IADEV *iadev = INPH_IA_DEV(dev);
3113 if(!left--) {
3114 if (iadev->phy_type == FE_25MBIT_PHY) {
3115 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3116 return n;
3117 }
3118 if (iadev->phy_type == FE_DS3_PHY)
3119 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3120 else if (iadev->phy_type == FE_E3_PHY)
3121 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3122 else if (iadev->phy_type == FE_UTP_OPTION)
3123 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3124 else
3125 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3126 tmpPtr = page + n;
3127 if (iadev->pci_map_size == 0x40000)
3128 n += sprintf(tmpPtr, "-1KVC-");
3129 else
3130 n += sprintf(tmpPtr, "-4KVC-");
3131 tmpPtr = page + n;
3132 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3133 n += sprintf(tmpPtr, "1M \n");
3134 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3135 n += sprintf(tmpPtr, "512K\n");
3136 else
3137 n += sprintf(tmpPtr, "128K\n");
3138 return n;
3139 }
3140 if (!left) {
3141 return sprintf(page, " Number of Tx Buffer: %u\n"
3142 " Size of Tx Buffer : %u\n"
3143 " Number of Rx Buffer: %u\n"
3144 " Size of Rx Buffer : %u\n"
3145 " Packets Receiverd : %u\n"
3146 " Packets Transmitted: %u\n"
3147 " Cells Received : %u\n"
3148 " Cells Transmitted : %u\n"
3149 " Board Dropped Cells: %u\n"
3150 " Board Dropped Pkts : %u\n",
3151 iadev->num_tx_desc, iadev->tx_buf_sz,
3152 iadev->num_rx_desc, iadev->rx_buf_sz,
3153 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3154 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3155 iadev->drop_rxcell, iadev->drop_rxpkt);
3156 }
3157 return 0;
3158}
3159
3160static const struct atmdev_ops ops = {
3161 .open = ia_open,
3162 .close = ia_close,
3163 .ioctl = ia_ioctl,
3164 .getsockopt = ia_getsockopt,
3165 .setsockopt = ia_setsockopt,
3166 .send = ia_send,
3167 .phy_put = ia_phy_put,
3168 .phy_get = ia_phy_get,
3169 .change_qos = ia_change_qos,
3170 .proc_read = ia_proc_read,
3171 .owner = THIS_MODULE,
3172};
3173
3174static int ia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
3175{
3176 struct atm_dev *dev;
3177 IADEV *iadev;
3178 int ret;
3179
3180 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
3181 if (!iadev) {
3182 ret = -ENOMEM;
3183 goto err_out;
3184 }
3185
3186 iadev->pci = pdev;
3187
3188 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3189 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3190 if (pci_enable_device(pdev)) {
3191 ret = -ENODEV;
3192 goto err_out_free_iadev;
3193 }
3194 dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1, NULL);
3195 if (!dev) {
3196 ret = -ENOMEM;
3197 goto err_out_disable_dev;
3198 }
3199 dev->dev_data = iadev;
3200 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
3201 IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n", dev,
3202 iadev->LineRate);)
3203
3204 pci_set_drvdata(pdev, dev);
3205
3206 ia_dev[iadev_count] = iadev;
3207 _ia_dev[iadev_count] = dev;
3208 iadev_count++;
3209 if (ia_init(dev) || ia_start(dev)) {
3210 IF_INIT(printk("IA register failed!\n");)
3211 iadev_count--;
3212 ia_dev[iadev_count] = NULL;
3213 _ia_dev[iadev_count] = NULL;
3214 ret = -EINVAL;
3215 goto err_out_deregister_dev;
3216 }
3217 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3218
3219 iadev->next_board = ia_boards;
3220 ia_boards = dev;
3221
3222 return 0;
3223
3224err_out_deregister_dev:
3225 atm_dev_deregister(dev);
3226err_out_disable_dev:
3227 pci_disable_device(pdev);
3228err_out_free_iadev:
3229 kfree(iadev);
3230err_out:
3231 return ret;
3232}
3233
3234static void ia_remove_one(struct pci_dev *pdev)
3235{
3236 struct atm_dev *dev = pci_get_drvdata(pdev);
3237 IADEV *iadev = INPH_IA_DEV(dev);
3238
3239 /* Disable phy interrupts */
3240 ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
3241 SUNI_RSOP_CIE);
3242 udelay(1);
3243
3244 if (dev->phy && dev->phy->stop)
3245 dev->phy->stop(dev);
3246
3247 /* De-register device */
3248 free_irq(iadev->irq, dev);
3249 iadev_count--;
3250 ia_dev[iadev_count] = NULL;
3251 _ia_dev[iadev_count] = NULL;
3252 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3253 atm_dev_deregister(dev);
3254
3255 iounmap(iadev->base);
3256 pci_disable_device(pdev);
3257
3258 ia_free_rx(iadev);
3259 ia_free_tx(iadev);
3260
3261 kfree(iadev);
3262}
3263
3264static struct pci_device_id ia_pci_tbl[] = {
3265 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3266 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3267 { 0,}
3268};
3269MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3270
3271static struct pci_driver ia_driver = {
3272 .name = DEV_LABEL,
3273 .id_table = ia_pci_tbl,
3274 .probe = ia_init_one,
3275 .remove = ia_remove_one,
3276};
3277
3278static int __init ia_module_init(void)
3279{
3280 int ret;
3281
3282 ret = pci_register_driver(&ia_driver);
3283 if (ret >= 0) {
3284 ia_timer.expires = jiffies + 3*HZ;
3285 add_timer(&ia_timer);
3286 } else
3287 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3288 return ret;
3289}
3290
3291static void __exit ia_module_exit(void)
3292{
3293 pci_unregister_driver(&ia_driver);
3294
3295 del_timer(&ia_timer);
3296}
3297
3298module_init(ia_module_init);
3299module_exit(ia_module_exit);