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1da177e4
LT		 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>
a6b7a407 56#include <linux/interrupt.h>
1da177e4 57#include <linux/wait.h>
5a0e3ad6 58#include <linux/slab.h>
1da177e4 59#include <asm/io.h>
60063497 60#include <linux/atomic.h>
1da177e4
LT		 61#include <asm/uaccess.h>
62#include <asm/string.h>
63#include <asm/byteorder.h>
420635f5
JL		 64#include <linux/vmalloc.h>
65#include <linux/jiffies.h>
1da177e4
LT		 66#include "iphase.h"
67#include "suni.h"
b67445fc 68#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
2be63b87 69
1da177e4
LT		 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);
8d06afab 79static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
1da177e4
LT		 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
1da177e4
LT		 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) return -1;
116 entry->data = data;
117 entry->next = NULL;
118 if (que->next == NULL)
119 que->next = que->tail = entry;
120 else {
121 que->tail->next = entry;
122 que->tail = que->tail->next;
123 }
124 return 1;
125}
126
127static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
128 IARTN_Q *tmpdata;
129 if (que->next == NULL)
130 return NULL;
131 tmpdata = que->next;
132 if ( que->next == que->tail)
133 que->next = que->tail = NULL;
134 else
135 que->next = que->next->next;
136 return tmpdata;
137}
138
139static void ia_hack_tcq(IADEV *dev) {
140
141 u_short desc1;
142 u_short tcq_wr;
143 struct ia_vcc *iavcc_r = NULL;
144
145 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
146 while (dev->host_tcq_wr != tcq_wr) {
147 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
148 if (!desc1) ;
149 else if (!dev->desc_tbl[desc1 -1].timestamp) {
150 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
151 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
152 }
153 else if (dev->desc_tbl[desc1 -1].timestamp) {
154 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
155 printk("IA: Fatal err in get_desc\n");
156 continue;
157 }
158 iavcc_r->vc_desc_cnt--;
159 dev->desc_tbl[desc1 -1].timestamp = 0;
849e8caa
DH		 160 IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n",
161 dev->desc_tbl[desc1 -1].txskb, desc1);)
1da177e4
LT		 162 if (iavcc_r->pcr < dev->rate_limit) {
163 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
164 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
165 printk("ia_hack_tcq: No memory available\n");
166 }
167 dev->desc_tbl[desc1 -1].iavcc = NULL;
168 dev->desc_tbl[desc1 -1].txskb = NULL;
169 }
170 dev->host_tcq_wr += 2;
171 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
172 dev->host_tcq_wr = dev->ffL.tcq_st;
173 }
174} /* ia_hack_tcq */
175
176static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
177 u_short desc_num, i;
178 struct sk_buff *skb;
179 struct ia_vcc *iavcc_r = NULL;
180 unsigned long delta;
181 static unsigned long timer = 0;
182 int ltimeout;
183
184 ia_hack_tcq (dev);
420635f5 185 if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
1da177e4
LT		 186 timer = jiffies;
187 i=0;
188 while (i < dev->num_tx_desc) {
189 if (!dev->desc_tbl[i].timestamp) {
190 i++;
191 continue;
192 }
193 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
194 delta = jiffies - dev->desc_tbl[i].timestamp;
195 if (delta >= ltimeout) {
196 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
197 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
198 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
199 else
200 dev->ffL.tcq_rd -= 2;
201 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
202 if (!(skb = dev->desc_tbl[i].txskb) ||
203 !(iavcc_r = dev->desc_tbl[i].iavcc))
204 printk("Fatal err, desc table vcc or skb is NULL\n");
205 else
206 iavcc_r->vc_desc_cnt--;
207 dev->desc_tbl[i].timestamp = 0;
208 dev->desc_tbl[i].iavcc = NULL;
209 dev->desc_tbl[i].txskb = NULL;
210 }
211 i++;
212 } /* while */
213 }
214 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
215 return 0xFFFF;
216
217 /* Get the next available descriptor number from TCQ */
218 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
219
220 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
221 dev->ffL.tcq_rd += 2;
222 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
6f74dbbc 223 dev->ffL.tcq_rd = dev->ffL.tcq_st;
1da177e4
LT		 224 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
225 return 0xFFFF;
226 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
227 }
228
229 /* get system time */
230 dev->desc_tbl[desc_num -1].timestamp = jiffies;
231 return desc_num;
232}
233
234static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
235 u_char foundLockUp;
236 vcstatus_t *vcstatus;
237 u_short *shd_tbl;
238 u_short tempCellSlot, tempFract;
239 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
240 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
241 u_int i;
242
243 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
244 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
245 vcstatus->cnt++;
246 foundLockUp = 0;
247 if( vcstatus->cnt == 0x05 ) {
248 abr_vc += vcc->vci;
249 eabr_vc += vcc->vci;
250 if( eabr_vc->last_desc ) {
251 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
252 /* Wait for 10 Micro sec */
253 udelay(10);
254 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
255 foundLockUp = 1;
256 }
257 else {
258 tempCellSlot = abr_vc->last_cell_slot;
259 tempFract = abr_vc->fraction;
260 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
261 && (tempFract == dev->testTable[vcc->vci]->fract))
262 foundLockUp = 1;
263 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
264 dev->testTable[vcc->vci]->fract = tempFract;
265 }
266 } /* last descriptor */
267 vcstatus->cnt = 0;
268 } /* vcstatus->cnt */
269
270 if (foundLockUp) {
271 IF_ABR(printk("LOCK UP found\n");)
272 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
273 /* Wait for 10 Micro sec */
274 udelay(10);
275 abr_vc->status &= 0xFFF8;
276 abr_vc->status |= 0x0001; /* state is idle */
277 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
278 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
279 if (i < dev->num_vc)
280 shd_tbl[i] = vcc->vci;
281 else
282 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
283 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
284 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
285 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
286 vcstatus->cnt = 0;
287 } /* foundLockUp */
288
289 } /* if an ABR VC */
290
291
292}
293
294/*
295** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
296**
297** +----+----+------------------+-------------------------------+
298** | R | NZ | 5-bit exponent | 9-bit mantissa |
299** +----+----+------------------+-------------------------------+
300**
0779bf2d 301** R = reserved (written as 0)
1da177e4
LT		 302** NZ = 0 if 0 cells/sec; 1 otherwise
303**
304** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
305*/
306static u16
307cellrate_to_float(u32 cr)
308{
309
310#define NZ 0x4000
311#define M_BITS 9 /* Number of bits in mantissa */
312#define E_BITS 5 /* Number of bits in exponent */
313#define M_MASK 0x1ff
314#define E_MASK 0x1f
315 u16 flot;
316 u32 tmp = cr & 0x00ffffff;
317 int i = 0;
318 if (cr == 0)
319 return 0;
320 while (tmp != 1) {
321 tmp >>= 1;
322 i++;
323 }
324 if (i == M_BITS)
325 flot = NZ | (i << M_BITS) | (cr & M_MASK);
326 else if (i < M_BITS)
327 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
328 else
329 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
330 return flot;
331}
332
333#if 0
334/*
335** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
336*/
337static u32
338float_to_cellrate(u16 rate)
339{
340 u32 exp, mantissa, cps;
341 if ((rate & NZ) == 0)
342 return 0;
343 exp = (rate >> M_BITS) & E_MASK;
344 mantissa = rate & M_MASK;
345 if (exp == 0)
346 return 1;
347 cps = (1 << M_BITS) | mantissa;
348 if (exp == M_BITS)
349 cps = cps;
350 else if (exp > M_BITS)
351 cps <<= (exp - M_BITS);
352 else
353 cps >>= (M_BITS - exp);
354 return cps;
355}
356#endif
357
358static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
359 srv_p->class_type = ATM_ABR;
360 srv_p->pcr = dev->LineRate;
361 srv_p->mcr = 0;
362 srv_p->icr = 0x055cb7;
363 srv_p->tbe = 0xffffff;
364 srv_p->frtt = 0x3a;
365 srv_p->rif = 0xf;
366 srv_p->rdf = 0xb;
367 srv_p->nrm = 0x4;
368 srv_p->trm = 0x7;
369 srv_p->cdf = 0x3;
370 srv_p->adtf = 50;
371}
372
373static int
374ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
375 struct atm_vcc *vcc, u8 flag)
376{
377 f_vc_abr_entry *f_abr_vc;
378 r_vc_abr_entry *r_abr_vc;
379 u32 icr;
380 u8 trm, nrm, crm;
381 u16 adtf, air, *ptr16;
382 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
383 f_abr_vc += vcc->vci;
384 switch (flag) {
385 case 1: /* FFRED initialization */
386#if 0 /* sanity check */
387 if (srv_p->pcr == 0)
388 return INVALID_PCR;
389 if (srv_p->pcr > dev->LineRate)
390 srv_p->pcr = dev->LineRate;
391 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
392 return MCR_UNAVAILABLE;
393 if (srv_p->mcr > srv_p->pcr)
394 return INVALID_MCR;
395 if (!(srv_p->icr))
396 srv_p->icr = srv_p->pcr;
397 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
398 return INVALID_ICR;
399 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
400 return INVALID_TBE;
401 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
402 return INVALID_FRTT;
403 if (srv_p->nrm > MAX_NRM)
404 return INVALID_NRM;
405 if (srv_p->trm > MAX_TRM)
406 return INVALID_TRM;
407 if (srv_p->adtf > MAX_ADTF)
408 return INVALID_ADTF;
409 else if (srv_p->adtf == 0)
410 srv_p->adtf = 1;
411 if (srv_p->cdf > MAX_CDF)
412 return INVALID_CDF;
413 if (srv_p->rif > MAX_RIF)
414 return INVALID_RIF;
415 if (srv_p->rdf > MAX_RDF)
416 return INVALID_RDF;
417#endif
418 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
419 f_abr_vc->f_vc_type = ABR;
420 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
421 /* i.e 2**n = 2 << (n-1) */
422 f_abr_vc->f_nrm = nrm << 8 | nrm;
423 trm = 100000/(2 << (16 - srv_p->trm));
424 if ( trm == 0) trm = 1;
425 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
426 crm = srv_p->tbe / nrm;
427 if (crm == 0) crm = 1;
428 f_abr_vc->f_crm = crm & 0xff;
429 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
430 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
431 ((srv_p->tbe/srv_p->frtt)*1000000) :
432 (1000000/(srv_p->frtt/srv_p->tbe)));
433 f_abr_vc->f_icr = cellrate_to_float(icr);
434 adtf = (10000 * srv_p->adtf)/8192;
435 if (adtf == 0) adtf = 1;
436 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
437 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
438 f_abr_vc->f_acr = f_abr_vc->f_icr;
439 f_abr_vc->f_status = 0x0042;
440 break;
441 case 0: /* RFRED initialization */
442 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
443 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
444 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
445 r_abr_vc += vcc->vci;
446 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
447 air = srv_p->pcr << (15 - srv_p->rif);
448 if (air == 0) air = 1;
449 r_abr_vc->r_air = cellrate_to_float(air);
450 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
451 dev->sum_mcr += srv_p->mcr;
452 dev->n_abr++;
453 break;
454 default:
455 break;
456 }
457 return 0;
458}
459static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
460 u32 rateLow=0, rateHigh, rate;
461 int entries;
462 struct ia_vcc *ia_vcc;
463
464 int idealSlot =0, testSlot, toBeAssigned, inc;
465 u32 spacing;
466 u16 *SchedTbl, *TstSchedTbl;
467 u16 cbrVC, vcIndex;
468 u32 fracSlot = 0;
469 u32 sp_mod = 0;
470 u32 sp_mod2 = 0;
471
472 /* IpAdjustTrafficParams */
473 if (vcc->qos.txtp.max_pcr <= 0) {
474 IF_ERR(printk("PCR for CBR not defined\n");)
475 return -1;
476 }
477 rate = vcc->qos.txtp.max_pcr;
478 entries = rate / dev->Granularity;
479 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
480 entries, rate, dev->Granularity);)
481 if (entries < 1)
482 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
483 rateLow = entries * dev->Granularity;
484 rateHigh = (entries + 1) * dev->Granularity;
485 if (3*(rate - rateLow) > (rateHigh - rate))
486 entries++;
487 if (entries > dev->CbrRemEntries) {
488 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
489 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
490 entries, dev->CbrRemEntries);)
491 return -EBUSY;
492 }
493
494 ia_vcc = INPH_IA_VCC(vcc);
495 ia_vcc->NumCbrEntry = entries;
496 dev->sum_mcr += entries * dev->Granularity;
497 /* IaFFrednInsertCbrSched */
498 // Starting at an arbitrary location, place the entries into the table
499 // as smoothly as possible
500 cbrVC = 0;
501 spacing = dev->CbrTotEntries / entries;
502 sp_mod = dev->CbrTotEntries % entries; // get modulo
503 toBeAssigned = entries;
504 fracSlot = 0;
505 vcIndex = vcc->vci;
506 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
507 while (toBeAssigned)
508 {
509 // If this is the first time, start the table loading for this connection
510 // as close to entryPoint as possible.
511 if (toBeAssigned == entries)
512 {
513 idealSlot = dev->CbrEntryPt;
514 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
515 if (dev->CbrEntryPt >= dev->CbrTotEntries)
516 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
517 } else {
518 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
519 // in the table that would be smoothest
520 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
521 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
522 }
523 if (idealSlot >= (int)dev->CbrTotEntries)
524 idealSlot -= dev->CbrTotEntries;
525 // Continuously check around this ideal value until a null
526 // location is encountered.
527 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
528 inc = 0;
529 testSlot = idealSlot;
530 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
849e8caa
DH		 531 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n",
532 testSlot, TstSchedTbl,toBeAssigned);)
1da177e4
LT		 533 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
534 while (cbrVC) // If another VC at this location, we have to keep looking
535 {
536 inc++;
537 testSlot = idealSlot - inc;
538 if (testSlot < 0) { // Wrap if necessary
539 testSlot += dev->CbrTotEntries;
849e8caa
DH		 540 IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n",
541 SchedTbl,testSlot);)
1da177e4
LT		 542 }
543 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
544 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
545 if (!cbrVC)
546 break;
547 testSlot = idealSlot + inc;
548 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
549 testSlot -= dev->CbrTotEntries;
550 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
551 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
552 testSlot, toBeAssigned);)
553 }
554 // set table index and read in value
555 TstSchedTbl = (u16*)(SchedTbl + testSlot);
849e8caa
DH		 556 IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n",
557 TstSchedTbl,cbrVC,inc);)
1da177e4
LT		 558 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
559 } /* while */
560 // Move this VCI number into this location of the CBR Sched table.
710708e8 561 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex, sizeof(*TstSchedTbl));
1da177e4
LT		 562 dev->CbrRemEntries--;
563 toBeAssigned--;
564 } /* while */
565
566 /* IaFFrednCbrEnable */
567 dev->NumEnabledCBR++;
568 if (dev->NumEnabledCBR == 1) {
569 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
570 IF_CBR(printk("CBR is enabled\n");)
571 }
572 return 0;
573}
574static void ia_cbrVc_close (struct atm_vcc *vcc) {
575 IADEV *iadev;
576 u16 *SchedTbl, NullVci = 0;
577 u32 i, NumFound;
578
579 iadev = INPH_IA_DEV(vcc->dev);
580 iadev->NumEnabledCBR--;
581 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
582 if (iadev->NumEnabledCBR == 0) {
583 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
584 IF_CBR (printk("CBR support disabled\n");)
585 }
586 NumFound = 0;
587 for (i=0; i < iadev->CbrTotEntries; i++)
588 {
589 if (*SchedTbl == vcc->vci) {
590 iadev->CbrRemEntries++;
591 *SchedTbl = NullVci;
592 IF_CBR(NumFound++;)
593 }
594 SchedTbl++;
595 }
596 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
597}
598
599static int ia_avail_descs(IADEV *iadev) {
600 int tmp = 0;
601 ia_hack_tcq(iadev);
602 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
603 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
604 else
605 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
606 iadev->ffL.tcq_st) / 2;
607 return tmp;
608}
609
610static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
611
612static int ia_que_tx (IADEV *iadev) {
613 struct sk_buff *skb;
614 int num_desc;
615 struct atm_vcc *vcc;
1da177e4
LT		 616 num_desc = ia_avail_descs(iadev);
617
618 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
619 if (!(vcc = ATM_SKB(skb)->vcc)) {
620 dev_kfree_skb_any(skb);
621 printk("ia_que_tx: Null vcc\n");
622 break;
623 }
624 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
625 dev_kfree_skb_any(skb);
626 printk("Free the SKB on closed vci %d \n", vcc->vci);
627 break;
628 }
1da177e4
LT		 629 if (ia_pkt_tx (vcc, skb)) {
630 skb_queue_head(&iadev->tx_backlog, skb);
631 }
632 num_desc--;
633 }
634 return 0;
635}
636
637static void ia_tx_poll (IADEV *iadev) {
638 struct atm_vcc *vcc = NULL;
639 struct sk_buff *skb = NULL, *skb1 = NULL;
640 struct ia_vcc *iavcc;
641 IARTN_Q * rtne;
642
643 ia_hack_tcq(iadev);
644 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
645 skb = rtne->data.txskb;
646 if (!skb) {
647 printk("ia_tx_poll: skb is null\n");
648 goto out;
649 }
650 vcc = ATM_SKB(skb)->vcc;
651 if (!vcc) {
652 printk("ia_tx_poll: vcc is null\n");
653 dev_kfree_skb_any(skb);
654 goto out;
655 }
656
657 iavcc = INPH_IA_VCC(vcc);
658 if (!iavcc) {
659 printk("ia_tx_poll: iavcc is null\n");
660 dev_kfree_skb_any(skb);
661 goto out;
662 }
663
664 skb1 = skb_dequeue(&iavcc->txing_skb);
665 while (skb1 && (skb1 != skb)) {
666 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
667 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
668 }
669 IF_ERR(printk("Release the SKB not match\n");)
670 if ((vcc->pop) && (skb1->len != 0))
671 {
672 vcc->pop(vcc, skb1);
673 IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
674 (long)skb1);)
675 }
676 else
677 dev_kfree_skb_any(skb1);
678 skb1 = skb_dequeue(&iavcc->txing_skb);
679 }
680 if (!skb1) {
681 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
682 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
683 break;
684 }
685 if ((vcc->pop) && (skb->len != 0))
686 {
687 vcc->pop(vcc, skb);
688 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
689 }
690 else
691 dev_kfree_skb_any(skb);
692 kfree(rtne);
693 }
694 ia_que_tx(iadev);
695out:
696 return;
697}
698#if 0
699static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
700{
701 u32 t;
702 int i;
703 /*
704 * Issue a command to enable writes to the NOVRAM
705 */
706 NVRAM_CMD (EXTEND + EWEN);
707 NVRAM_CLR_CE;
708 /*
709 * issue the write command
710 */
711 NVRAM_CMD(IAWRITE + addr);
712 /*
713 * Send the data, starting with D15, then D14, and so on for 16 bits
714 */
715 for (i=15; i>=0; i--) {
716 NVRAM_CLKOUT (val & 0x8000);
717 val <<= 1;
718 }
719 NVRAM_CLR_CE;
720 CFG_OR(NVCE);
721 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
722 while (!(t & NVDO))
723 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
724
725 NVRAM_CLR_CE;
726 /*
727 * disable writes again
728 */
729 NVRAM_CMD(EXTEND + EWDS)
730 NVRAM_CLR_CE;
731 CFG_AND(~NVDI);
732}
733#endif
734
735static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
736{
737 u_short val;
738 u32 t;
739 int i;
740 /*
741 * Read the first bit that was clocked with the falling edge of the
742 * the last command data clock
743 */
744 NVRAM_CMD(IAREAD + addr);
745 /*
746 * Now read the rest of the bits, the next bit read is D14, then D13,
747 * and so on.
748 */
749 val = 0;
750 for (i=15; i>=0; i--) {
751 NVRAM_CLKIN(t);
752 val |= (t << i);
753 }
754 NVRAM_CLR_CE;
755 CFG_AND(~NVDI);
756 return val;
757}
758
759static void ia_hw_type(IADEV *iadev) {
760 u_short memType = ia_eeprom_get(iadev, 25);
761 iadev->memType = memType;
762 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
763 iadev->num_tx_desc = IA_TX_BUF;
764 iadev->tx_buf_sz = IA_TX_BUF_SZ;
765 iadev->num_rx_desc = IA_RX_BUF;
766 iadev->rx_buf_sz = IA_RX_BUF_SZ;
767 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
768 if (IA_TX_BUF == DFL_TX_BUFFERS)
769 iadev->num_tx_desc = IA_TX_BUF / 2;
770 else
771 iadev->num_tx_desc = IA_TX_BUF;
772 iadev->tx_buf_sz = IA_TX_BUF_SZ;
773 if (IA_RX_BUF == DFL_RX_BUFFERS)
774 iadev->num_rx_desc = IA_RX_BUF / 2;
775 else
776 iadev->num_rx_desc = IA_RX_BUF;
777 iadev->rx_buf_sz = IA_RX_BUF_SZ;
778 }
779 else {
780 if (IA_TX_BUF == DFL_TX_BUFFERS)
781 iadev->num_tx_desc = IA_TX_BUF / 8;
782 else
783 iadev->num_tx_desc = IA_TX_BUF;
784 iadev->tx_buf_sz = IA_TX_BUF_SZ;
785 if (IA_RX_BUF == DFL_RX_BUFFERS)
786 iadev->num_rx_desc = IA_RX_BUF / 8;
787 else
788 iadev->num_rx_desc = IA_RX_BUF;
789 iadev->rx_buf_sz = IA_RX_BUF_SZ;
790 }
791 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
792 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
793 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
794 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
795
796#if 0
797 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
798 iadev->phy_type = PHY_OC3C_S;
799 else if ((memType & FE_MASK) == FE_UTP_OPTION)
800 iadev->phy_type = PHY_UTP155;
801 else
802 iadev->phy_type = PHY_OC3C_M;
803#endif
804
805 iadev->phy_type = memType & FE_MASK;
806 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
807 memType,iadev->phy_type);)
808 if (iadev->phy_type == FE_25MBIT_PHY)
809 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
810 else if (iadev->phy_type == FE_DS3_PHY)
811 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
812 else if (iadev->phy_type == FE_E3_PHY)
813 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
814 else
815 iadev->LineRate = (u32)(ATM_OC3_PCR);
816 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
817
818}
819
26c5c44d 820static u32 ia_phy_read32(struct iadev_priv *ia, unsigned int reg)
821{
822 return readl(ia->phy + (reg >> 2));
823}
824
825static void ia_phy_write32(struct iadev_priv *ia, unsigned int reg, u32 val)
826{
827 writel(val, ia->phy + (reg >> 2));
1da177e4
LT		 828}
829
26c5c44d 830static void ia_frontend_intr(struct iadev_priv *iadev)
831{
832 u32 status;
833
834 if (iadev->phy_type & FE_25MBIT_PHY) {
835 status = ia_phy_read32(iadev, MB25_INTR_STATUS);
836 iadev->carrier_detect = (status & MB25_IS_GSB) ? 1 : 0;
837 } else if (iadev->phy_type & FE_DS3_PHY) {
838 ia_phy_read32(iadev, SUNI_DS3_FRM_INTR_STAT);
839 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
840 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
841 } else if (iadev->phy_type & FE_E3_PHY) {
842 ia_phy_read32(iadev, SUNI_E3_FRM_MAINT_INTR_IND);
843 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
844 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
845 } else {
846 status = ia_phy_read32(iadev, SUNI_RSOP_STATUS);
847 iadev->carrier_detect = (status & SUNI_LOSV) ? 0 : 1;
848 }
849
850 printk(KERN_INFO "IA: SUNI carrier %s\n",
851 iadev->carrier_detect ? "detected" : "lost signal");
852}
853
854static void ia_mb25_init(struct iadev_priv *iadev)
1da177e4 855{
1da177e4
LT		 856#if 0
857 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
858#endif
26c5c44d 859 ia_phy_write32(iadev, MB25_MASTER_CTRL, MB25_MC_DRIC | MB25_MC_DREC);
860 ia_phy_write32(iadev, MB25_DIAG_CONTROL, 0);
861
862 iadev->carrier_detect =
863 (ia_phy_read32(iadev, MB25_INTR_STATUS) & MB25_IS_GSB) ? 1 : 0;
864}
1da177e4 865
26c5c44d 866struct ia_reg {
867 u16 reg;
868 u16 val;
869};
870
871static void ia_phy_write(struct iadev_priv *iadev,
872 const struct ia_reg *regs, int len)
1da177e4 873{
26c5c44d 874 while (len--) {
875 ia_phy_write32(iadev, regs->reg, regs->val);
876 regs++;
877 }
878}
879
880static void ia_suni_pm7345_init_ds3(struct iadev_priv *iadev)
881{
882 static const struct ia_reg suni_ds3_init [] = {
883 { SUNI_DS3_FRM_INTR_ENBL, 0x17 },
884 { SUNI_DS3_FRM_CFG, 0x01 },
885 { SUNI_DS3_TRAN_CFG, 0x01 },
886 { SUNI_CONFIG, 0 },
887 { SUNI_SPLR_CFG, 0 },
888 { SUNI_SPLT_CFG, 0 }
889 };
890 u32 status;
891
892 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
893 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
894
895 ia_phy_write(iadev, suni_ds3_init, ARRAY_SIZE(suni_ds3_init));
896}
897
898static void ia_suni_pm7345_init_e3(struct iadev_priv *iadev)
899{
900 static const struct ia_reg suni_e3_init [] = {
901 { SUNI_E3_FRM_FRAM_OPTIONS, 0x04 },
902 { SUNI_E3_FRM_MAINT_OPTIONS, 0x20 },
903 { SUNI_E3_FRM_FRAM_INTR_ENBL, 0x1d },
904 { SUNI_E3_FRM_MAINT_INTR_ENBL, 0x30 },
905 { SUNI_E3_TRAN_STAT_DIAG_OPTIONS, 0 },
906 { SUNI_E3_TRAN_FRAM_OPTIONS, 0x01 },
907 { SUNI_CONFIG, SUNI_PM7345_E3ENBL },
908 { SUNI_SPLR_CFG, 0x41 },
909 { SUNI_SPLT_CFG, 0x41 }
910 };
911 u32 status;
912
913 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
914 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
915 ia_phy_write(iadev, suni_e3_init, ARRAY_SIZE(suni_e3_init));
916}
917
918static void ia_suni_pm7345_init(struct iadev_priv *iadev)
919{
920 static const struct ia_reg suni_init [] = {
921 /* Enable RSOP loss of signal interrupt. */
922 { SUNI_INTR_ENBL, 0x28 },
923 /* Clear error counters. */
924 { SUNI_ID_RESET, 0 },
925 /* Clear "PMCTST" in master test register. */
926 { SUNI_MASTER_TEST, 0 },
927
928 { SUNI_RXCP_CTRL, 0x2c },
929 { SUNI_RXCP_FCTRL, 0x81 },
930
931 { SUNI_RXCP_IDLE_PAT_H1, 0 },
932 { SUNI_RXCP_IDLE_PAT_H2, 0 },
933 { SUNI_RXCP_IDLE_PAT_H3, 0 },
934 { SUNI_RXCP_IDLE_PAT_H4, 0x01 },
935
936 { SUNI_RXCP_IDLE_MASK_H1, 0xff },
937 { SUNI_RXCP_IDLE_MASK_H2, 0xff },
938 { SUNI_RXCP_IDLE_MASK_H3, 0xff },
939 { SUNI_RXCP_IDLE_MASK_H4, 0xfe },
940
941 { SUNI_RXCP_CELL_PAT_H1, 0 },
942 { SUNI_RXCP_CELL_PAT_H2, 0 },
943 { SUNI_RXCP_CELL_PAT_H3, 0 },
944 { SUNI_RXCP_CELL_PAT_H4, 0x01 },
945
946 { SUNI_RXCP_CELL_MASK_H1, 0xff },
947 { SUNI_RXCP_CELL_MASK_H2, 0xff },
948 { SUNI_RXCP_CELL_MASK_H3, 0xff },
949 { SUNI_RXCP_CELL_MASK_H4, 0xff },
950
951 { SUNI_TXCP_CTRL, 0xa4 },
952 { SUNI_TXCP_INTR_EN_STS, 0x10 },
953 { SUNI_TXCP_IDLE_PAT_H5, 0x55 }
954 };
955
956 if (iadev->phy_type & FE_DS3_PHY)
957 ia_suni_pm7345_init_ds3(iadev);
958 else
959 ia_suni_pm7345_init_e3(iadev);
960
961 ia_phy_write(iadev, suni_init, ARRAY_SIZE(suni_init));
962
963 ia_phy_write32(iadev, SUNI_CONFIG, ia_phy_read32(iadev, SUNI_CONFIG) &
964 ~(SUNI_PM7345_LLB | SUNI_PM7345_CLB |
965 SUNI_PM7345_DLB | SUNI_PM7345_PLB));
1da177e4
LT		 966#ifdef __SNMP__
967 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
968#endif /* __SNMP__ */
969 return;
970}
971
972
973/***************************** IA_LIB END *****************************/
974
a22eb6fa 975#ifdef CONFIG_ATM_IA_DEBUG
1da177e4
LT		 976static int tcnter = 0;
977static void xdump( u_char* cp, int length, char* prefix )
978{
979 int col, count;
980 u_char prntBuf[120];
981 u_char* pBuf = prntBuf;
982 count = 0;
983 while(count < length){
984 pBuf += sprintf( pBuf, "%s", prefix );
985 for(col = 0;count + col < length && col < 16; col++){
986 if (col != 0 && (col % 4) == 0)
987 pBuf += sprintf( pBuf, " " );
988 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
989 }
990 while(col++ < 16){ /* pad end of buffer with blanks */
991 if ((col % 4) == 0)
992 sprintf( pBuf, " " );
993 pBuf += sprintf( pBuf, " " );
994 }
995 pBuf += sprintf( pBuf, " " );
996 for(col = 0;count + col < length && col < 16; col++){
997 if (isprint((int)cp[count + col]))
998 pBuf += sprintf( pBuf, "%c", cp[count + col] );
999 else
1000 pBuf += sprintf( pBuf, "." );
1001 }
32f3dde5 1002 printk("%s\n", prntBuf);
1da177e4
LT		 1003 count += col;
1004 pBuf = prntBuf;
1005 }
1006
1007} /* close xdump(... */
a22eb6fa 1008#endif /* CONFIG_ATM_IA_DEBUG */
1da177e4
LT		 1009
1010
1011static struct atm_dev *ia_boards = NULL;
1012
1013#define ACTUAL_RAM_BASE \
1014 RAM_BASE*((iadev->mem)/(128 * 1024))
1015#define ACTUAL_SEG_RAM_BASE \
1016 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1017#define ACTUAL_REASS_RAM_BASE \
1018 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1019
1020
1021/*-- some utilities and memory allocation stuff will come here -------------*/
1022
1023static void desc_dbg(IADEV *iadev) {
1024
1025 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1026 u32 i;
1027 void __iomem *tmp;
1028 // regval = readl((u32)ia_cmds->maddr);
1029 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1030 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1031 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1032 readw(iadev->seg_ram+tcq_wr_ptr-2));
1033 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1034 iadev->ffL.tcq_rd);
1035 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1036 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1037 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1038 i = 0;
1039 while (tcq_st_ptr != tcq_ed_ptr) {
1040 tmp = iadev->seg_ram+tcq_st_ptr;
1041 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1042 tcq_st_ptr += 2;
1043 }
1044 for(i=0; i <iadev->num_tx_desc; i++)
1045 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1046}
1047
1048
25985edc 1049/*----------------------------- Receiving side stuff --------------------------*/
1da177e4
LT		 1050
1051static void rx_excp_rcvd(struct atm_dev *dev)
1052{
1053#if 0 /* closing the receiving size will cause too many excp int */
1054 IADEV *iadev;
1055 u_short state;
1056 u_short excpq_rd_ptr;
1057 //u_short *ptr;
1058 int vci, error = 1;
1059 iadev = INPH_IA_DEV(dev);
1060 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1061 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1062 { printk("state = %x \n", state);
1063 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1064 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1065 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1066 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1067 // TODO: update exception stat
1068 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1069 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1070 // pwang_test
1071 excpq_rd_ptr += 4;
1072 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1073 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1074 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1075 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1076 }
1077#endif
1078}
1079
1080static void free_desc(struct atm_dev *dev, int desc)
1081{
1082 IADEV *iadev;
1083 iadev = INPH_IA_DEV(dev);
1084 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1085 iadev->rfL.fdq_wr +=2;
1086 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1087 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1088 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1089}
1090
1091
1092static int rx_pkt(struct atm_dev *dev)
1093{
1094 IADEV *iadev;
1095 struct atm_vcc *vcc;
1096 unsigned short status;
1097 struct rx_buf_desc __iomem *buf_desc_ptr;
1098 int desc;
1099 struct dle* wr_ptr;
1100 int len;
1101 struct sk_buff *skb;
1102 u_int buf_addr, dma_addr;
1103
1104 iadev = INPH_IA_DEV(dev);
1105 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1106 {
1107 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1108 return -EINVAL;
1109 }
1110 /* mask 1st 3 bits to get the actual descno. */
1111 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1112 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1113 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1114 printk(" pcq_wr_ptr = 0x%x\n",
1115 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1116 /* update the read pointer - maybe we shud do this in the end*/
1117 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1118 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1119 else
1120 iadev->rfL.pcq_rd += 2;
1121 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1122
1123 /* get the buffer desc entry.
1124 update stuff. - doesn't seem to be any update necessary
1125 */
1126 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1127 /* make the ptr point to the corresponding buffer desc entry */
1128 buf_desc_ptr += desc;
1129 if (!desc || (desc > iadev->num_rx_desc) ||
1130 ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1131 free_desc(dev, desc);
1132 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1133 return -1;
1134 }
1135 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1136 if (!vcc)
1137 {
1138 free_desc(dev, desc);
1139 printk("IA: null vcc, drop PDU\n");
1140 return -1;
1141 }
1142
1143
1144 /* might want to check the status bits for errors */
1145 status = (u_short) (buf_desc_ptr->desc_mode);
1146 if (status & (RX_CER | RX_PTE | RX_OFL))
1147 {
1148 atomic_inc(&vcc->stats->rx_err);
1149 IF_ERR(printk("IA: bad packet, dropping it");)
1150 if (status & RX_CER) {
1151 IF_ERR(printk(" cause: packet CRC error\n");)
1152 }
1153 else if (status & RX_PTE) {
1154 IF_ERR(printk(" cause: packet time out\n");)
1155 }
1156 else {
af901ca1 1157 IF_ERR(printk(" cause: buffer overflow\n");)
1da177e4
LT		 1158 }
1159 goto out_free_desc;
1160 }
1161
1162 /*
1163 build DLE.
1164 */
1165
1166 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1167 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1168 len = dma_addr - buf_addr;
1169 if (len > iadev->rx_buf_sz) {
1170 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1171 atomic_inc(&vcc->stats->rx_err);
1172 goto out_free_desc;
1173 }
1174
1175 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1176 if (vcc->vci < 32)
1177 printk("Drop control packets\n");
1178 goto out_free_desc;
1179 }
1180 skb_put(skb,len);
1181 // pwang_test
1182 ATM_SKB(skb)->vcc = vcc;
1183 ATM_DESC(skb) = desc;
1184 skb_queue_tail(&iadev->rx_dma_q, skb);
1185
1186 /* Build the DLE structure */
1187 wr_ptr = iadev->rx_dle_q.write;
ede58ef2
C		 1188 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
1189 len, DMA_FROM_DEVICE);
1da177e4
LT		 1190 wr_ptr->local_pkt_addr = buf_addr;
1191 wr_ptr->bytes = len; /* We don't know this do we ?? */
1192 wr_ptr->mode = DMA_INT_ENABLE;
1193
1194 /* shud take care of wrap around here too. */
1195 if(++wr_ptr == iadev->rx_dle_q.end)
1196 wr_ptr = iadev->rx_dle_q.start;
1197 iadev->rx_dle_q.write = wr_ptr;
1198 udelay(1);
1199 /* Increment transaction counter */
1200 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1201out: return 0;
1202out_free_desc:
1203 free_desc(dev, desc);
1204 goto out;
1205}
1206
1207static void rx_intr(struct atm_dev *dev)
1208{
1209 IADEV *iadev;
1210 u_short status;
1211 u_short state, i;
1212
1213 iadev = INPH_IA_DEV(dev);
1214 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1215 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1216 if (status & RX_PKT_RCVD)
1217 {
1218 /* do something */
25985edc 1219 /* Basically recvd an interrupt for receiving a packet.
1da177e4
LT		 1220 A descriptor would have been written to the packet complete
1221 queue. Get all the descriptors and set up dma to move the
1222 packets till the packet complete queue is empty..
1223 */
1224 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1225 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1226 while(!(state & PCQ_EMPTY))
1227 {
1228 rx_pkt(dev);
1229 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1230 }
1231 iadev->rxing = 1;
1232 }
1233 if (status & RX_FREEQ_EMPT)
1234 {
1235 if (iadev->rxing) {
1236 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1237 iadev->rx_tmp_jif = jiffies;
1238 iadev->rxing = 0;
1239 }
420635f5 1240 else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
1da177e4
LT		 1241 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1242 for (i = 1; i <= iadev->num_rx_desc; i++)
1243 free_desc(dev, i);
1244printk("Test logic RUN!!!!\n");
1245 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1246 iadev->rxing = 1;
1247 }
1248 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1249 }
1250
1251 if (status & RX_EXCP_RCVD)
1252 {
1253 /* probably need to handle the exception queue also. */
1254 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1255 rx_excp_rcvd(dev);
1256 }
1257
1258
1259 if (status & RX_RAW_RCVD)
1260 {
1261 /* need to handle the raw incoming cells. This deepnds on
1262 whether we have programmed to receive the raw cells or not.
1263 Else ignore. */
1264 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1265 }
1266}
1267
1268
1269static void rx_dle_intr(struct atm_dev *dev)
1270{
1271 IADEV *iadev;
1272 struct atm_vcc *vcc;
1273 struct sk_buff *skb;
1274 int desc;
1275 u_short state;
1276 struct dle *dle, *cur_dle;
1277 u_int dle_lp;
1278 int len;
1279 iadev = INPH_IA_DEV(dev);
1280
1281 /* free all the dles done, that is just update our own dle read pointer
1282 - do we really need to do this. Think not. */
1283 /* DMA is done, just get all the recevie buffers from the rx dma queue
1284 and push them up to the higher layer protocol. Also free the desc
1285 associated with the buffer. */
1286 dle = iadev->rx_dle_q.read;
1287 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1288 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1289 while(dle != cur_dle)
1290 {
1291 /* free the DMAed skb */
1292 skb = skb_dequeue(&iadev->rx_dma_q);
1293 if (!skb)
1294 goto INCR_DLE;
1295 desc = ATM_DESC(skb);
1296 free_desc(dev, desc);
1297
1298 if (!(len = skb->len))
1299 {
1300 printk("rx_dle_intr: skb len 0\n");
1301 dev_kfree_skb_any(skb);
1302 }
1303 else
1304 {
1305 struct cpcs_trailer *trailer;
1306 u_short length;
1307 struct ia_vcc *ia_vcc;
1308
ede58ef2
C		 1309 dma_unmap_single(&iadev->pci->dev, iadev->rx_dle_q.write->sys_pkt_addr,
1310 len, DMA_FROM_DEVICE);
1da177e4
LT		 1311 /* no VCC related housekeeping done as yet. lets see */
1312 vcc = ATM_SKB(skb)->vcc;
1313 if (!vcc) {
1314 printk("IA: null vcc\n");
1315 dev_kfree_skb_any(skb);
1316 goto INCR_DLE;
1317 }
1318 ia_vcc = INPH_IA_VCC(vcc);
1319 if (ia_vcc == NULL)
1320 {
1321 atomic_inc(&vcc->stats->rx_err);
49f5ed42 1322 atm_return(vcc, skb->truesize);
1da177e4 1323 dev_kfree_skb_any(skb);
1da177e4
LT		 1324 goto INCR_DLE;
1325 }
1326 // get real pkt length pwang_test
1327 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1328 skb->len - sizeof(*trailer));
b67445fc 1329 length = swap_byte_order(trailer->length);
1da177e4
LT		 1330 if ((length > iadev->rx_buf_sz) || (length >
1331 (skb->len - sizeof(struct cpcs_trailer))))
1332 {
1333 atomic_inc(&vcc->stats->rx_err);
1334 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1335 length, skb->len);)
49f5ed42 1336 atm_return(vcc, skb->truesize);
1da177e4 1337 dev_kfree_skb_any(skb);
1da177e4
LT		 1338 goto INCR_DLE;
1339 }
1340 skb_trim(skb, length);
1341
1342 /* Display the packet */
1343 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1344 xdump(skb->data, skb->len, "RX: ");
1345 printk("\n");)
1346
1347 IF_RX(printk("rx_dle_intr: skb push");)
1348 vcc->push(vcc,skb);
1349 atomic_inc(&vcc->stats->rx);
1350 iadev->rx_pkt_cnt++;
1351 }
1352INCR_DLE:
1353 if (++dle == iadev->rx_dle_q.end)
1354 dle = iadev->rx_dle_q.start;
1355 }
1356 iadev->rx_dle_q.read = dle;
1357
1358 /* if the interrupts are masked because there were no free desc available,
1359 unmask them now. */
1360 if (!iadev->rxing) {
1361 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1362 if (!(state & FREEQ_EMPTY)) {
1363 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1364 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1365 iadev->reass_reg+REASS_MASK_REG);
1366 iadev->rxing++;
1367 }
1368 }
1369}
1370
1371
1372static int open_rx(struct atm_vcc *vcc)
1373{
1374 IADEV *iadev;
1375 u_short __iomem *vc_table;
1376 u_short __iomem *reass_ptr;
1377 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1378
1379 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1380 iadev = INPH_IA_DEV(vcc->dev);
1381 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1382 if (iadev->phy_type & FE_25MBIT_PHY) {
1383 printk("IA: ABR not support\n");
1384 return -EINVAL;
1385 }
1386 }
1387 /* Make only this VCI in the vc table valid and let all
1388 others be invalid entries */
1389 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1390 vc_table += vcc->vci;
1391 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1392
1393 *vc_table = vcc->vci << 6;
1394 /* Also keep a list of open rx vcs so that we can attach them with
1395 incoming PDUs later. */
1396 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1397 (vcc->qos.txtp.traffic_class == ATM_ABR))
1398 {
1399 srv_cls_param_t srv_p;
1400 init_abr_vc(iadev, &srv_p);
1401 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1402 }
1403 else { /* for UBR later may need to add CBR logic */
1404 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1405 reass_ptr += vcc->vci;
1406 *reass_ptr = NO_AAL5_PKT;
1407 }
1408
1409 if (iadev->rx_open[vcc->vci])
1410 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1411 vcc->dev->number, vcc->vci);
1412 iadev->rx_open[vcc->vci] = vcc;
1413 return 0;
1414}
1415
1416static int rx_init(struct atm_dev *dev)
1417{
1418 IADEV *iadev;
1419 struct rx_buf_desc __iomem *buf_desc_ptr;
1420 unsigned long rx_pkt_start = 0;
1421 void *dle_addr;
1422 struct abr_vc_table *abr_vc_table;
1423 u16 *vc_table;
1424 u16 *reass_table;
1da177e4
LT		 1425 int i,j, vcsize_sel;
1426 u_short freeq_st_adr;
1427 u_short *freeq_start;
1428
1429 iadev = INPH_IA_DEV(dev);
1430 // spin_lock_init(&iadev->rx_lock);
1431
1432 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
ede58ef2
C		 1433 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1434 &iadev->rx_dle_dma, GFP_KERNEL);
1da177e4
LT		 1435 if (!dle_addr) {
1436 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1437 goto err_out;
1438 }
97928f70 1439 iadev->rx_dle_q.start = (struct dle *)dle_addr;
1da177e4
LT		 1440 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1441 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
97928f70 1442 iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1da177e4
LT		 1443 /* the end of the dle q points to the entry after the last
1444 DLE that can be used. */
1445
1446 /* write the upper 20 bits of the start address to rx list address register */
97928f70 1447 /* We know this is 32bit bus addressed so the following is safe */
1da177e4
LT		 1448 writel(iadev->rx_dle_dma & 0xfffff000,
1449 iadev->dma + IPHASE5575_RX_LIST_ADDR);
849e8caa
DH		 1450 IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n",
1451 iadev->dma+IPHASE5575_TX_LIST_ADDR,
26c5c44d 1452 readl(iadev->dma + IPHASE5575_TX_LIST_ADDR));
849e8caa
DH		 1453 printk("Rx Dle list addr: 0x%p value: 0x%0x\n",
1454 iadev->dma+IPHASE5575_RX_LIST_ADDR,
26c5c44d 1455 readl(iadev->dma + IPHASE5575_RX_LIST_ADDR));)
1da177e4
LT		 1456
1457 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1458 writew(0, iadev->reass_reg+MODE_REG);
1459 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1460
1461 /* Receive side control memory map
1462 -------------------------------
1463
1464 Buffer descr 0x0000 (736 - 23K)
1465 VP Table 0x5c00 (256 - 512)
1466 Except q 0x5e00 (128 - 512)
1467 Free buffer q 0x6000 (1K - 2K)
1468 Packet comp q 0x6800 (1K - 2K)
1469 Reass Table 0x7000 (1K - 2K)
1470 VC Table 0x7800 (1K - 2K)
1471 ABR VC Table 0x8000 (1K - 32K)
1472 */
1473
1474 /* Base address for Buffer Descriptor Table */
1475 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1476 /* Set the buffer size register */
1477 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1478
1479 /* Initialize each entry in the Buffer Descriptor Table */
1480 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1481 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1482 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1483 buf_desc_ptr++;
1484 rx_pkt_start = iadev->rx_pkt_ram;
1485 for(i=1; i<=iadev->num_rx_desc; i++)
1486 {
1487 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1488 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1489 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1490 buf_desc_ptr++;
1491 rx_pkt_start += iadev->rx_buf_sz;
1492 }
849e8caa 1493 IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n", buf_desc_ptr);)
1da177e4
LT		 1494 i = FREE_BUF_DESC_Q*iadev->memSize;
1495 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1496 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1497 writew(i+iadev->num_rx_desc*sizeof(u_short),
1498 iadev->reass_reg+FREEQ_ED_ADR);
1499 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1500 writew(i+iadev->num_rx_desc*sizeof(u_short),
1501 iadev->reass_reg+FREEQ_WR_PTR);
1502 /* Fill the FREEQ with all the free descriptors. */
1503 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1504 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1505 for(i=1; i<=iadev->num_rx_desc; i++)
1506 {
1507 *freeq_start = (u_short)i;
1508 freeq_start++;
1509 }
849e8caa 1510 IF_INIT(printk("freeq_start: 0x%p\n", freeq_start);)
1da177e4
LT		 1511 /* Packet Complete Queue */
1512 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1513 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1514 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1515 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1516 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1517
1518 /* Exception Queue */
1519 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1520 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1521 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1522 iadev->reass_reg+EXCP_Q_ED_ADR);
1523 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1524 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1525
1526 /* Load local copy of FREEQ and PCQ ptrs */
1527 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1528 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1529 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1530 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1531 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1532 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1533 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1534 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1535
1536 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1537 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1538 iadev->rfL.pcq_wr);)
1539 /* just for check - no VP TBL */
1540 /* VP Table */
1541 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1542 /* initialize VP Table for invalid VPIs
1543 - I guess we can write all 1s or 0x000f in the entire memory
1544 space or something similar.
1545 */
1546
1547 /* This seems to work and looks right to me too !!! */
1548 i = REASS_TABLE * iadev->memSize;
1549 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1550 /* initialize Reassembly table to I don't know what ???? */
1551 reass_table = (u16 *)(iadev->reass_ram+i);
1552 j = REASS_TABLE_SZ * iadev->memSize;
1553 for(i=0; i < j; i++)
1554 *reass_table++ = NO_AAL5_PKT;
1555 i = 8*1024;
1556 vcsize_sel = 0;
1557 while (i != iadev->num_vc) {
1558 i /= 2;
1559 vcsize_sel++;
1560 }
1561 i = RX_VC_TABLE * iadev->memSize;
1562 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1563 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1564 j = RX_VC_TABLE_SZ * iadev->memSize;
1565 for(i = 0; i < j; i++)
1566 {
1567 /* shift the reassembly pointer by 3 + lower 3 bits of
1568 vc_lkup_base register (=3 for 1K VCs) and the last byte
1569 is those low 3 bits.
1570 Shall program this later.
1571 */
1572 *vc_table = (i << 6) | 15; /* for invalid VCI */
1573 vc_table++;
1574 }
1575 /* ABR VC table */
1576 i = ABR_VC_TABLE * iadev->memSize;
1577 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1578
1579 i = ABR_VC_TABLE * iadev->memSize;
1580 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1581 j = REASS_TABLE_SZ * iadev->memSize;
1582 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1583 for(i = 0; i < j; i++) {
1584 abr_vc_table->rdf = 0x0003;
1585 abr_vc_table->air = 0x5eb1;
1586 abr_vc_table++;
1587 }
1588
1589 /* Initialize other registers */
1590
1591 /* VP Filter Register set for VC Reassembly only */
1592 writew(0xff00, iadev->reass_reg+VP_FILTER);
1593 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1594 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1595
1596 /* Packet Timeout Count related Registers :
1597 Set packet timeout to occur in about 3 seconds
1598 Set Packet Aging Interval count register to overflow in about 4 us
1599 */
1600 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
97928f70
AC		 1601
1602 i = (j >> 6) & 0xFF;
1603 j += 2 * (j - 1);
1604 i |= ((j << 2) & 0xFF00);
1da177e4 1605 writew(i, iadev->reass_reg+TMOUT_RANGE);
97928f70 1606
1da177e4
LT		 1607 /* initiate the desc_tble */
1608 for(i=0; i<iadev->num_tx_desc;i++)
1609 iadev->desc_tbl[i].timestamp = 0;
1610
1611 /* to clear the interrupt status register - read it */
1612 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1613
1614 /* Mask Register - clear it */
1615 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1616
1617 skb_queue_head_init(&iadev->rx_dma_q);
1618 iadev->rx_free_desc_qhead = NULL;
f7141761
MK		 1619
1620 iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL);
1621 if (!iadev->rx_open) {
1da177e4
LT		 1622 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1623 dev->number);
1624 goto err_free_dle;
1625 }
f7141761 1626
1da177e4
LT		 1627 iadev->rxing = 1;
1628 iadev->rx_pkt_cnt = 0;
1629 /* Mode Register */
1630 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1631 return 0;
1632
1633err_free_dle:
ede58ef2
C		 1634 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1635 iadev->rx_dle_dma);
1da177e4
LT		 1636err_out:
1637 return -ENOMEM;
1638}
1639
1640
1641/*
1642 The memory map suggested in appendix A and the coding for it.
1643 Keeping it around just in case we change our mind later.
1644
1645 Buffer descr 0x0000 (128 - 4K)
1646 UBR sched 0x1000 (1K - 4K)
1647 UBR Wait q 0x2000 (1K - 4K)
1648 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1649 (128 - 256) each
1650 extended VC 0x4000 (1K - 8K)
1651 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1652 CBR sched 0x7000 (as needed)
1653 VC table 0x8000 (1K - 32K)
1654*/
1655
1656static void tx_intr(struct atm_dev *dev)
1657{
1658 IADEV *iadev;
1659 unsigned short status;
1660 unsigned long flags;
1661
1662 iadev = INPH_IA_DEV(dev);
1663
1664 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1665 if (status & TRANSMIT_DONE){
1666
1667 IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1668 spin_lock_irqsave(&iadev->tx_lock, flags);
1669 ia_tx_poll(iadev);
1670 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1671 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1672 if (iadev->close_pending)
1673 wake_up(&iadev->close_wait);
1674 }
1675 if (status & TCQ_NOT_EMPTY)
1676 {
1677 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1678 }
1679}
1680
1681static void tx_dle_intr(struct atm_dev *dev)
1682{
1683 IADEV *iadev;
1684 struct dle *dle, *cur_dle;
1685 struct sk_buff *skb;
1686 struct atm_vcc *vcc;
1687 struct ia_vcc *iavcc;
1688 u_int dle_lp;
1689 unsigned long flags;
1690
1691 iadev = INPH_IA_DEV(dev);
1692 spin_lock_irqsave(&iadev->tx_lock, flags);
1693 dle = iadev->tx_dle_q.read;
1694 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1695 (sizeof(struct dle)*DLE_ENTRIES - 1);
1696 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1697 while (dle != cur_dle)
1698 {
1699 /* free the DMAed skb */
1700 skb = skb_dequeue(&iadev->tx_dma_q);
1701 if (!skb) break;
1702
1703 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1704 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
ede58ef2
C		 1705 dma_unmap_single(&iadev->pci->dev, dle->sys_pkt_addr, skb->len,
1706 DMA_TO_DEVICE);
1da177e4
LT		 1707 }
1708 vcc = ATM_SKB(skb)->vcc;
1709 if (!vcc) {
1710 printk("tx_dle_intr: vcc is null\n");
1711 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1712 dev_kfree_skb_any(skb);
1713
1714 return;
1715 }
1716 iavcc = INPH_IA_VCC(vcc);
1717 if (!iavcc) {
1718 printk("tx_dle_intr: iavcc is null\n");
1719 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1720 dev_kfree_skb_any(skb);
1721 return;
1722 }
1723 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1724 if ((vcc->pop) && (skb->len != 0))
1725 {
1726 vcc->pop(vcc, skb);
1727 }
1728 else {
1729 dev_kfree_skb_any(skb);
1730 }
1731 }
1732 else { /* Hold the rate-limited skb for flow control */
1733 IA_SKB_STATE(skb) |= IA_DLED;
1734 skb_queue_tail(&iavcc->txing_skb, skb);
1735 }
849e8caa 1736 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n", skb);)
1da177e4
LT		 1737 if (++dle == iadev->tx_dle_q.end)
1738 dle = iadev->tx_dle_q.start;
1739 }
1740 iadev->tx_dle_q.read = dle;
1741 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1742}
1743
1744static int open_tx(struct atm_vcc *vcc)
1745{
1746 struct ia_vcc *ia_vcc;
1747 IADEV *iadev;
1748 struct main_vc *vc;
1749 struct ext_vc *evc;
1750 int ret;
1751 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1752 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1753 iadev = INPH_IA_DEV(vcc->dev);
1754
1755 if (iadev->phy_type & FE_25MBIT_PHY) {
1756 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1757 printk("IA: ABR not support\n");
1758 return -EINVAL;
1759 }
1760 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1761 printk("IA: CBR not support\n");
1762 return -EINVAL;
1763 }
1764 }
1765 ia_vcc = INPH_IA_VCC(vcc);
1766 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1767 if (vcc->qos.txtp.max_sdu >
1768 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1769 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1770 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1771 vcc->dev_data = NULL;
1772 kfree(ia_vcc);
1773 return -EINVAL;
1774 }
1775 ia_vcc->vc_desc_cnt = 0;
1776 ia_vcc->txing = 1;
1777
1778 /* find pcr */
1779 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1780 vcc->qos.txtp.pcr = iadev->LineRate;
1781 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1782 vcc->qos.txtp.pcr = iadev->LineRate;
1783 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1784 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1785 if (vcc->qos.txtp.pcr > iadev->LineRate)
1786 vcc->qos.txtp.pcr = iadev->LineRate;
1787 ia_vcc->pcr = vcc->qos.txtp.pcr;
1788
1789 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1790 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1791 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1792 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1793 if (ia_vcc->pcr < iadev->rate_limit)
1794 skb_queue_head_init (&ia_vcc->txing_skb);
1795 if (ia_vcc->pcr < iadev->rate_limit) {
1796 struct sock *sk = sk_atm(vcc);
1797
1798 if (vcc->qos.txtp.max_sdu != 0) {
1799 if (ia_vcc->pcr > 60000)
1800 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1801 else if (ia_vcc->pcr > 2000)
1802 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1803 else
1804 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1805 }
1806 else
1807 sk->sk_sndbuf = 24576;
1808 }
1809
1810 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1811 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1812 vc += vcc->vci;
1813 evc += vcc->vci;
1814 memset((caddr_t)vc, 0, sizeof(*vc));
1815 memset((caddr_t)evc, 0, sizeof(*evc));
1816
1817 /* store the most significant 4 bits of vci as the last 4 bits
1818 of first part of atm header.
1819 store the last 12 bits of vci as first 12 bits of the second
1820 part of the atm header.
1821 */
1822 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1823 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1824
1825 /* check the following for different traffic classes */
1826 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1827 {
1828 vc->type = UBR;
1829 vc->status = CRC_APPEND;
1830 vc->acr = cellrate_to_float(iadev->LineRate);
1831 if (vcc->qos.txtp.pcr > 0)
1832 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1833 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1834 vcc->qos.txtp.max_pcr,vc->acr);)
1835 }
1836 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1837 { srv_cls_param_t srv_p;
1838 IF_ABR(printk("Tx ABR VCC\n");)
1839 init_abr_vc(iadev, &srv_p);
1840 if (vcc->qos.txtp.pcr > 0)
1841 srv_p.pcr = vcc->qos.txtp.pcr;
1842 if (vcc->qos.txtp.min_pcr > 0) {
1843 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1844 if (tmpsum > iadev->LineRate)
1845 return -EBUSY;
1846 srv_p.mcr = vcc->qos.txtp.min_pcr;
1847 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1848 }
1849 else srv_p.mcr = 0;
1850 if (vcc->qos.txtp.icr)
1851 srv_p.icr = vcc->qos.txtp.icr;
1852 if (vcc->qos.txtp.tbe)
1853 srv_p.tbe = vcc->qos.txtp.tbe;
1854 if (vcc->qos.txtp.frtt)
1855 srv_p.frtt = vcc->qos.txtp.frtt;
1856 if (vcc->qos.txtp.rif)
1857 srv_p.rif = vcc->qos.txtp.rif;
1858 if (vcc->qos.txtp.rdf)
1859 srv_p.rdf = vcc->qos.txtp.rdf;
1860 if (vcc->qos.txtp.nrm_pres)
1861 srv_p.nrm = vcc->qos.txtp.nrm;
1862 if (vcc->qos.txtp.trm_pres)
1863 srv_p.trm = vcc->qos.txtp.trm;
1864 if (vcc->qos.txtp.adtf_pres)
1865 srv_p.adtf = vcc->qos.txtp.adtf;
1866 if (vcc->qos.txtp.cdf_pres)
1867 srv_p.cdf = vcc->qos.txtp.cdf;
1868 if (srv_p.icr > srv_p.pcr)
1869 srv_p.icr = srv_p.pcr;
1870 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1871 srv_p.pcr, srv_p.mcr);)
1872 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1873 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1874 if (iadev->phy_type & FE_25MBIT_PHY) {
1875 printk("IA: CBR not support\n");
1876 return -EINVAL;
1877 }
1878 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
25985edc 1879 IF_CBR(printk("PCR is not available\n");)
1da177e4
LT		 1880 return -1;
1881 }
1882 vc->type = CBR;
1883 vc->status = CRC_APPEND;
1884 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1885 return ret;
1886 }
1887 }
1888 else
1889 printk("iadev: Non UBR, ABR and CBR traffic not supportedn");
1890
1891 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1892 IF_EVENT(printk("ia open_tx returning \n");)
1893 return 0;
1894}
1895
1896
1897static int tx_init(struct atm_dev *dev)
1898{
1899 IADEV *iadev;
1900 struct tx_buf_desc *buf_desc_ptr;
1901 unsigned int tx_pkt_start;
1902 void *dle_addr;
1903 int i;
1904 u_short tcq_st_adr;
1905 u_short *tcq_start;
1906 u_short prq_st_adr;
1907 u_short *prq_start;
1908 struct main_vc *vc;
1909 struct ext_vc *evc;
1910 u_short tmp16;
1911 u32 vcsize_sel;
1912
1913 iadev = INPH_IA_DEV(dev);
1914 spin_lock_init(&iadev->tx_lock);
1915
1916 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1917 readw(iadev->seg_reg+SEG_MASK_REG));)
1918
1919 /* Allocate 4k (boundary aligned) bytes */
ede58ef2
C		 1920 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1921 &iadev->tx_dle_dma, GFP_KERNEL);
1da177e4
LT		 1922 if (!dle_addr) {
1923 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1924 goto err_out;
1925 }
1926 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1927 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1928 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
97928f70 1929 iadev->tx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1da177e4
LT		 1930
1931 /* write the upper 20 bits of the start address to tx list address register */
1932 writel(iadev->tx_dle_dma & 0xfffff000,
1933 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1934 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1935 writew(0, iadev->seg_reg+MODE_REG_0);
1936 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1937 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1938 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1939 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1940
1941 /*
1942 Transmit side control memory map
1943 --------------------------------
1944 Buffer descr 0x0000 (128 - 4K)
1945 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1946 (512 - 1K) each
1947 TCQ - 4K, PRQ - 5K
1948 CBR Table 0x1800 (as needed) - 6K
1949 UBR Table 0x3000 (1K - 4K) - 12K
1950 UBR Wait queue 0x4000 (1K - 4K) - 16K
1951 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1952 ABR Tbl - 20K, ABR Wq - 22K
1953 extended VC 0x6000 (1K - 8K) - 24K
1954 VC Table 0x8000 (1K - 32K) - 32K
1955
1956 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1957 and Wait q, which can be allotted later.
1958 */
1959
1960 /* Buffer Descriptor Table Base address */
1961 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1962
1963 /* initialize each entry in the buffer descriptor table */
1964 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1965 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1966 buf_desc_ptr++;
1967 tx_pkt_start = TX_PACKET_RAM;
1968 for(i=1; i<=iadev->num_tx_desc; i++)
1969 {
1970 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1971 buf_desc_ptr->desc_mode = AAL5;
1972 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1973 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1974 buf_desc_ptr++;
1975 tx_pkt_start += iadev->tx_buf_sz;
1976 }
1977 iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1978 if (!iadev->tx_buf) {
1979 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1980 goto err_free_dle;
1981 }
1982 for (i= 0; i< iadev->num_tx_desc; i++)
1983 {
1984 struct cpcs_trailer *cpcs;
1985
1986 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1987 if(!cpcs) {
1988 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1989 goto err_free_tx_bufs;
1990 }
1991 iadev->tx_buf[i].cpcs = cpcs;
ede58ef2
C		 1992 iadev->tx_buf[i].dma_addr = dma_map_single(&iadev->pci->dev,
1993 cpcs,
1994 sizeof(*cpcs),
1995 DMA_TO_DEVICE);
1da177e4
LT		 1996 }
1997 iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1998 sizeof(struct desc_tbl_t), GFP_KERNEL);
1999 if (!iadev->desc_tbl) {
2000 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
2001 goto err_free_all_tx_bufs;
2002 }
2003
2004 /* Communication Queues base address */
2005 i = TX_COMP_Q * iadev->memSize;
2006 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
2007
2008 /* Transmit Complete Queue */
2009 writew(i, iadev->seg_reg+TCQ_ST_ADR);
2010 writew(i, iadev->seg_reg+TCQ_RD_PTR);
2011 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
2012 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
2013 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2014 iadev->seg_reg+TCQ_ED_ADR);
2015 /* Fill the TCQ with all the free descriptors. */
2016 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
2017 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
2018 for(i=1; i<=iadev->num_tx_desc; i++)
2019 {
2020 *tcq_start = (u_short)i;
2021 tcq_start++;
2022 }
2023
2024 /* Packet Ready Queue */
2025 i = PKT_RDY_Q * iadev->memSize;
2026 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2027 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2028 iadev->seg_reg+PRQ_ED_ADR);
2029 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2030 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2031
2032 /* Load local copy of PRQ and TCQ ptrs */
2033 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2034 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2035 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2036
2037 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2038 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2039 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2040
2041 /* Just for safety initializing the queue to have desc 1 always */
2042 /* Fill the PRQ with all the free descriptors. */
2043 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2044 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2045 for(i=1; i<=iadev->num_tx_desc; i++)
2046 {
2047 *prq_start = (u_short)0; /* desc 1 in all entries */
2048 prq_start++;
2049 }
2050 /* CBR Table */
2051 IF_INIT(printk("Start CBR Init\n");)
2052#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2053 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2054#else /* Charlie's logic is wrong ? */
2055 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2056 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2057 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2058#endif
2059
2060 IF_INIT(printk("value in register = 0x%x\n",
2061 readw(iadev->seg_reg+CBR_PTR_BASE));)
2062 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2063 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2064 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2065 readw(iadev->seg_reg+CBR_TAB_BEG));)
2066 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2067 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2068 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
849e8caa
DH		 2069 IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n",
2070 iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
1da177e4
LT		 2071 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2072 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2073 readw(iadev->seg_reg+CBR_TAB_END+1));)
2074
2075 /* Initialize the CBR Schedualing Table */
2076 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2077 0, iadev->num_vc*6);
2078 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2079 iadev->CbrEntryPt = 0;
2080 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2081 iadev->NumEnabledCBR = 0;
2082
2083 /* UBR scheduling Table and wait queue */
2084 /* initialize all bytes of UBR scheduler table and wait queue to 0
2085 - SCHEDSZ is 1K (# of entries).
2086 - UBR Table size is 4K
2087 - UBR wait queue is 4K
2088 since the table and wait queues are contiguous, all the bytes
b595076a 2089 can be initialized by one memeset.
1da177e4
LT		 2090 */
2091
2092 vcsize_sel = 0;
2093 i = 8*1024;
2094 while (i != iadev->num_vc) {
2095 i /= 2;
2096 vcsize_sel++;
2097 }
2098
2099 i = MAIN_VC_TABLE * iadev->memSize;
2100 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2101 i = EXT_VC_TABLE * iadev->memSize;
2102 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2103 i = UBR_SCHED_TABLE * iadev->memSize;
2104 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2105 i = UBR_WAIT_Q * iadev->memSize;
2106 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2107 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2108 0, iadev->num_vc*8);
2109 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2110 /* initialize all bytes of ABR scheduler table and wait queue to 0
2111 - SCHEDSZ is 1K (# of entries).
2112 - ABR Table size is 2K
2113 - ABR wait queue is 2K
2114 since the table and wait queues are contiguous, all the bytes
b595076a 2115 can be initialized by one memeset.
1da177e4
LT		 2116 */
2117 i = ABR_SCHED_TABLE * iadev->memSize;
2118 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2119 i = ABR_WAIT_Q * iadev->memSize;
2120 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2121
2122 i = ABR_SCHED_TABLE*iadev->memSize;
2123 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2124 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2125 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2126 iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2127 if (!iadev->testTable) {
2128 printk("Get freepage failed\n");
2129 goto err_free_desc_tbl;
2130 }
2131 for(i=0; i<iadev->num_vc; i++)
2132 {
2133 memset((caddr_t)vc, 0, sizeof(*vc));
2134 memset((caddr_t)evc, 0, sizeof(*evc));
2135 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2136 GFP_KERNEL);
2137 if (!iadev->testTable[i])
2138 goto err_free_test_tables;
2139 iadev->testTable[i]->lastTime = 0;
2140 iadev->testTable[i]->fract = 0;
2141 iadev->testTable[i]->vc_status = VC_UBR;
2142 vc++;
2143 evc++;
2144 }
2145
2146 /* Other Initialization */
2147
2148 /* Max Rate Register */
2149 if (iadev->phy_type & FE_25MBIT_PHY) {
2150 writew(RATE25, iadev->seg_reg+MAXRATE);
2151 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2152 }
2153 else {
2154 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2155 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2156 }
2157 /* Set Idle Header Reigisters to be sure */
2158 writew(0, iadev->seg_reg+IDLEHEADHI);
2159 writew(0, iadev->seg_reg+IDLEHEADLO);
2160
2161 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2162 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2163
2164 iadev->close_pending = 0;
2165 init_waitqueue_head(&iadev->close_wait);
2166 init_waitqueue_head(&iadev->timeout_wait);
2167 skb_queue_head_init(&iadev->tx_dma_q);
2168 ia_init_rtn_q(&iadev->tx_return_q);
2169
2170 /* RM Cell Protocol ID and Message Type */
2171 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2172 skb_queue_head_init (&iadev->tx_backlog);
2173
2174 /* Mode Register 1 */
2175 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2176
2177 /* Mode Register 0 */
2178 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2179
2180 /* Interrupt Status Register - read to clear */
2181 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2182
2183 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2184 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2185 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2186 iadev->tx_pkt_cnt = 0;
2187 iadev->rate_limit = iadev->LineRate / 3;
2188
2189 return 0;
2190
2191err_free_test_tables:
2192 while (--i >= 0)
2193 kfree(iadev->testTable[i]);
2194 kfree(iadev->testTable);
2195err_free_desc_tbl:
2196 kfree(iadev->desc_tbl);
2197err_free_all_tx_bufs:
2198 i = iadev->num_tx_desc;
2199err_free_tx_bufs:
2200 while (--i >= 0) {
2201 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2202
ede58ef2
C		 2203 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2204 sizeof(*desc->cpcs), DMA_TO_DEVICE);
1da177e4
LT		 2205 kfree(desc->cpcs);
2206 }
2207 kfree(iadev->tx_buf);
2208err_free_dle:
ede58ef2
C		 2209 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2210 iadev->tx_dle_dma);
1da177e4
LT		 2211err_out:
2212 return -ENOMEM;
2213}
2214
7d12e780 2215static irqreturn_t ia_int(int irq, void *dev_id)
1da177e4
LT		 2216{
2217 struct atm_dev *dev;
2218 IADEV *iadev;
2219 unsigned int status;
2220 int handled = 0;
2221
2222 dev = dev_id;
2223 iadev = INPH_IA_DEV(dev);
2224 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2225 {
2226 handled = 1;
2227 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2228 if (status & STAT_REASSINT)
2229 {
2230 /* do something */
2231 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2232 rx_intr(dev);
2233 }
2234 if (status & STAT_DLERINT)
2235 {
2236 /* Clear this bit by writing a 1 to it. */
26c5c44d 2237 writel(STAT_DLERINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
1da177e4
LT		 2238 rx_dle_intr(dev);
2239 }
2240 if (status & STAT_SEGINT)
2241 {
2242 /* do something */
2243 IF_EVENT(printk("IA: tx_intr \n");)
2244 tx_intr(dev);
2245 }
2246 if (status & STAT_DLETINT)
2247 {
26c5c44d 2248 writel(STAT_DLETINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
1da177e4
LT		 2249 tx_dle_intr(dev);
2250 }
2251 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2252 {
2253 if (status & STAT_FEINT)
26c5c44d 2254 ia_frontend_intr(iadev);
1da177e4
LT		 2255 }
2256 }
2257 return IRQ_RETVAL(handled);
2258}
2259
2260
2261
2262/*----------------------------- entries --------------------------------*/
2263static int get_esi(struct atm_dev *dev)
2264{
2265 IADEV *iadev;
2266 int i;
2267 u32 mac1;
2268 u16 mac2;
2269
2270 iadev = INPH_IA_DEV(dev);
2271 mac1 = cpu_to_be32(le32_to_cpu(readl(
2272 iadev->reg+IPHASE5575_MAC1)));
2273 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2274 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2275 for (i=0; i<MAC1_LEN; i++)
2276 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2277
2278 for (i=0; i<MAC2_LEN; i++)
2279 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2280 return 0;
2281}
2282
2283static int reset_sar(struct atm_dev *dev)
2284{
2285 IADEV *iadev;
2286 int i, error = 1;
2287 unsigned int pci[64];
2288
2289 iadev = INPH_IA_DEV(dev);
2290 for(i=0; i<64; i++)
2291 if ((error = pci_read_config_dword(iadev->pci,
2292 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2293 return error;
2294 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2295 for(i=0; i<64; i++)
2296 if ((error = pci_write_config_dword(iadev->pci,
2297 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2298 return error;
2299 udelay(5);
2300 return 0;
2301}
2302
2303
6c44512d 2304static int ia_init(struct atm_dev *dev)
1da177e4
LT		 2305{
2306 IADEV *iadev;
2307 unsigned long real_base;
2308 void __iomem *base;
2309 unsigned short command;
1da177e4
LT		 2310 int error, i;
2311
2312 /* The device has been identified and registered. Now we read
2313 necessary configuration info like memory base address,
2314 interrupt number etc */
2315
2316 IF_INIT(printk(">ia_init\n");)
2317 dev->ci_range.vpi_bits = 0;
2318 dev->ci_range.vci_bits = NR_VCI_LD;
2319
2320 iadev = INPH_IA_DEV(dev);
2321 real_base = pci_resource_start (iadev->pci, 0);
2322 iadev->irq = iadev->pci->irq;
2323
44c10138
AK		 2324 error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2325 if (error) {
1da177e4
LT		 2326 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2327 dev->number,error);
2328 return -EINVAL;
2329 }
2330 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
44c10138 2331 dev->number, iadev->pci->revision, real_base, iadev->irq);)
1da177e4
LT		 2332
2333 /* find mapping size of board */
2334
2335 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2336
2337 if (iadev->pci_map_size == 0x100000){
2338 iadev->num_vc = 4096;
2339 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2340 iadev->memSize = 4;
2341 }
2342 else if (iadev->pci_map_size == 0x40000) {
2343 iadev->num_vc = 1024;
2344 iadev->memSize = 1;
2345 }
2346 else {
2347 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2348 return -EINVAL;
2349 }
2350 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2351
2352 /* enable bus mastering */
2353 pci_set_master(iadev->pci);
2354
2355 /*
2356 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2357 */
2358 udelay(10);
2359
2360 /* mapping the physical address to a virtual address in address space */
2361 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2362
2363 if (!base)
2364 {
2365 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2366 dev->number);
f716168b 2367 return -ENOMEM;
1da177e4
LT		 2368 }
2369 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
44c10138 2370 dev->number, iadev->pci->revision, base, iadev->irq);)
1da177e4
LT		 2371
2372 /* filling the iphase dev structure */
2373 iadev->mem = iadev->pci_map_size /2;
2374 iadev->real_base = real_base;
2375 iadev->base = base;
2376
2377 /* Bus Interface Control Registers */
2378 iadev->reg = base + REG_BASE;
2379 /* Segmentation Control Registers */
2380 iadev->seg_reg = base + SEG_BASE;
2381 /* Reassembly Control Registers */
2382 iadev->reass_reg = base + REASS_BASE;
2383 /* Front end/ DMA control registers */
2384 iadev->phy = base + PHY_BASE;
2385 iadev->dma = base + PHY_BASE;
2386 /* RAM - Segmentation RAm and Reassembly RAM */
2387 iadev->ram = base + ACTUAL_RAM_BASE;
2388 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2389 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2390
2391 /* lets print out the above */
2392 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2393 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2394 iadev->phy, iadev->ram, iadev->seg_ram,
2395 iadev->reass_ram);)
2396
2397 /* lets try reading the MAC address */
2398 error = get_esi(dev);
2399 if (error) {
2400 iounmap(iadev->base);
2401 return error;
2402 }
2403 printk("IA: ");
2404 for (i=0; i < ESI_LEN; i++)
2405 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2406 printk("\n");
2407
2408 /* reset SAR */
2409 if (reset_sar(dev)) {
2410 iounmap(iadev->base);
2411 printk("IA: reset SAR fail, please try again\n");
2412 return 1;
2413 }
2414 return 0;
2415}
2416
2417static void ia_update_stats(IADEV *iadev) {
2418 if (!iadev->carrier_detect)
2419 return;
2420 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2421 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2422 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2423 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2424 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2425 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2426 return;
2427}
2428
2429static void ia_led_timer(unsigned long arg) {
2430 unsigned long flags;
2431 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2432 u_char i;
2433 static u32 ctrl_reg;
2434 for (i = 0; i < iadev_count; i++) {
2435 if (ia_dev[i]) {
2436 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2437 if (blinking[i] == 0) {
2438 blinking[i]++;
2439 ctrl_reg &= (~CTRL_LED);
2440 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2441 ia_update_stats(ia_dev[i]);
2442 }
2443 else {
2444 blinking[i] = 0;
2445 ctrl_reg |= CTRL_LED;
2446 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2447 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2448 if (ia_dev[i]->close_pending)
2449 wake_up(&ia_dev[i]->close_wait);
2450 ia_tx_poll(ia_dev[i]);
2451 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2452 }
2453 }
2454 }
2455 mod_timer(&ia_timer, jiffies + HZ / 4);
2456 return;
2457}
2458
2459static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2460 unsigned long addr)
2461{
2462 writel(value, INPH_IA_DEV(dev)->phy+addr);
2463}
2464
2465static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2466{
2467 return readl(INPH_IA_DEV(dev)->phy+addr);
2468}
2469
2470static void ia_free_tx(IADEV *iadev)
2471{
2472 int i;
2473
2474 kfree(iadev->desc_tbl);
2475 for (i = 0; i < iadev->num_vc; i++)
2476 kfree(iadev->testTable[i]);
2477 kfree(iadev->testTable);
2478 for (i = 0; i < iadev->num_tx_desc; i++) {
2479 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2480
ede58ef2
C		 2481 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2482 sizeof(*desc->cpcs), DMA_TO_DEVICE);
1da177e4
LT		 2483 kfree(desc->cpcs);
2484 }
2485 kfree(iadev->tx_buf);
ede58ef2
C		 2486 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2487 iadev->tx_dle_dma);
1da177e4
LT		 2488}
2489
2490static void ia_free_rx(IADEV *iadev)
2491{
2492 kfree(iadev->rx_open);
ede58ef2
C		 2493 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2494 iadev->rx_dle_dma);
1da177e4
LT		 2495}
2496
6c44512d 2497static int ia_start(struct atm_dev *dev)
1da177e4
LT		 2498{
2499 IADEV *iadev;
2500 int error;
2501 unsigned char phy;
2502 u32 ctrl_reg;
2503 IF_EVENT(printk(">ia_start\n");)
2504 iadev = INPH_IA_DEV(dev);
dace1453 2505 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
1da177e4
LT		 2506 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2507 dev->number, iadev->irq);
2508 error = -EAGAIN;
2509 goto err_out;
2510 }
2511 /* @@@ should release IRQ on error */
2512 /* enabling memory + master */
2513 if ((error = pci_write_config_word(iadev->pci,
2514 PCI_COMMAND,
2515 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2516 {
2517 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2518 "master (0x%x)\n",dev->number, error);
2519 error = -EIO;
2520 goto err_free_irq;
2521 }
2522 udelay(10);
2523
2524 /* Maybe we should reset the front end, initialize Bus Interface Control
2525 Registers and see. */
2526
2527 IF_INIT(printk("Bus ctrl reg: %08x\n",
2528 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2529 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2530 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2531 | CTRL_B8
2532 | CTRL_B16
2533 | CTRL_B32
2534 | CTRL_B48
2535 | CTRL_B64
2536 | CTRL_B128
2537 | CTRL_ERRMASK
2538 | CTRL_DLETMASK /* shud be removed l8r */
2539 | CTRL_DLERMASK
2540 | CTRL_SEGMASK
2541 | CTRL_REASSMASK
2542 | CTRL_FEMASK
2543 | CTRL_CSPREEMPT;
2544
2545 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2546
2547 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2548 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2549 printk("Bus status reg after init: %08x\n",
2550 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2551
2552 ia_hw_type(iadev);
2553 error = tx_init(dev);
2554 if (error)
2555 goto err_free_irq;
2556 error = rx_init(dev);
2557 if (error)
2558 goto err_free_tx;
2559
2560 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2561 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2562 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2563 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2564 phy = 0; /* resolve compiler complaint */
2565 IF_INIT (
2566 if ((phy=ia_phy_get(dev,0)) == 0x30)
2567 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2568 else
2569 printk("IA: utopia,rev.%0x\n",phy);)
2570
2571 if (iadev->phy_type & FE_25MBIT_PHY)
2572 ia_mb25_init(iadev);
2573 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2574 ia_suni_pm7345_init(iadev);
2575 else {
2576 error = suni_init(dev);
2577 if (error)
2578 goto err_free_rx;
d6c1d704
JBD		 2579 if (dev->phy->start) {
2580 error = dev->phy->start(dev);
2581 if (error)
2582 goto err_free_rx;
2583 }
1da177e4 2584 /* Get iadev->carrier_detect status */
26c5c44d 2585 ia_frontend_intr(iadev);
1da177e4
LT		 2586 }
2587 return 0;
2588
2589err_free_rx:
2590 ia_free_rx(iadev);
2591err_free_tx:
2592 ia_free_tx(iadev);
2593err_free_irq:
2594 free_irq(iadev->irq, dev);
2595err_out:
2596 return error;
2597}
2598
2599static void ia_close(struct atm_vcc *vcc)
2600{
2601 DEFINE_WAIT(wait);
2602 u16 *vc_table;
2603 IADEV *iadev;
2604 struct ia_vcc *ia_vcc;
2605 struct sk_buff *skb = NULL;
2606 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2607 unsigned long closetime, flags;
2608
2609 iadev = INPH_IA_DEV(vcc->dev);
2610 ia_vcc = INPH_IA_VCC(vcc);
2611 if (!ia_vcc) return;
2612
2613 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2614 ia_vcc->vc_desc_cnt,vcc->vci);)
2615 clear_bit(ATM_VF_READY,&vcc->flags);
2616 skb_queue_head_init (&tmp_tx_backlog);
2617 skb_queue_head_init (&tmp_vcc_backlog);
2618 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2619 iadev->close_pending++;
2620 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
684b4ac1 2621 schedule_timeout(msecs_to_jiffies(500));
1da177e4
LT		 2622 finish_wait(&iadev->timeout_wait, &wait);
2623 spin_lock_irqsave(&iadev->tx_lock, flags);
2624 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2625 if (ATM_SKB(skb)->vcc == vcc){
2626 if (vcc->pop) vcc->pop(vcc, skb);
2627 else dev_kfree_skb_any(skb);
2628 }
2629 else
2630 skb_queue_tail(&tmp_tx_backlog, skb);
2631 }
2632 while((skb = skb_dequeue(&tmp_tx_backlog)))
2633 skb_queue_tail(&iadev->tx_backlog, skb);
2634 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2635 closetime = 300000 / ia_vcc->pcr;
2636 if (closetime == 0)
2637 closetime = 1;
2638 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2639 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2640 spin_lock_irqsave(&iadev->tx_lock, flags);
2641 iadev->close_pending--;
2642 iadev->testTable[vcc->vci]->lastTime = 0;
2643 iadev->testTable[vcc->vci]->fract = 0;
2644 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2645 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2646 if (vcc->qos.txtp.min_pcr > 0)
2647 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2648 }
2649 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2650 ia_vcc = INPH_IA_VCC(vcc);
2651 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2652 ia_cbrVc_close (vcc);
2653 }
2654 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2655 }
2656
2657 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2658 // reset reass table
2659 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2660 vc_table += vcc->vci;
2661 *vc_table = NO_AAL5_PKT;
2662 // reset vc table
2663 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2664 vc_table += vcc->vci;
2665 *vc_table = (vcc->vci << 6) | 15;
2666 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2667 struct abr_vc_table __iomem *abr_vc_table =
2668 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2669 abr_vc_table += vcc->vci;
2670 abr_vc_table->rdf = 0x0003;
2671 abr_vc_table->air = 0x5eb1;
2672 }
2673 // Drain the packets
2674 rx_dle_intr(vcc->dev);
2675 iadev->rx_open[vcc->vci] = NULL;
2676 }
2677 kfree(INPH_IA_VCC(vcc));
2678 ia_vcc = NULL;
2679 vcc->dev_data = NULL;
2680 clear_bit(ATM_VF_ADDR,&vcc->flags);
2681 return;
2682}
2683
2684static int ia_open(struct atm_vcc *vcc)
2685{
1da177e4
LT		 2686 struct ia_vcc *ia_vcc;
2687 int error;
2688 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2689 {
2690 IF_EVENT(printk("ia: not partially allocated resources\n");)
2691 vcc->dev_data = NULL;
2692 }
1da177e4
LT		 2693 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2694 {
2695 IF_EVENT(printk("iphase open: unspec part\n");)
2696 set_bit(ATM_VF_ADDR,&vcc->flags);
2697 }
2698 if (vcc->qos.aal != ATM_AAL5)
2699 return -EINVAL;
2700 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2701 vcc->dev->number, vcc->vpi, vcc->vci);)
2702
2703 /* Device dependent initialization */
2704 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2705 if (!ia_vcc) return -ENOMEM;
2706 vcc->dev_data = ia_vcc;
2707
2708 if ((error = open_rx(vcc)))
2709 {
2710 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2711 ia_close(vcc);
2712 return error;
2713 }
2714
2715 if ((error = open_tx(vcc)))
2716 {
2717 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2718 ia_close(vcc);
2719 return error;
2720 }
2721
2722 set_bit(ATM_VF_READY,&vcc->flags);
2723
2724#if 0
2725 {
2726 static u8 first = 1;
2727 if (first) {
2728 ia_timer.expires = jiffies + 3*HZ;
2729 add_timer(&ia_timer);
2730 first = 0;
2731 }
2732 }
2733#endif
2734 IF_EVENT(printk("ia open returning\n");)
2735 return 0;
2736}
2737
2738static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2739{
2740 IF_EVENT(printk(">ia_change_qos\n");)
2741 return 0;
2742}
2743
2744static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2745{
2746 IA_CMDBUF ia_cmds;
2747 IADEV *iadev;
2748 int i, board;
2749 u16 __user *tmps;
2750 IF_EVENT(printk(">ia_ioctl\n");)
2751 if (cmd != IA_CMD) {
2752 if (!dev->phy->ioctl) return -EINVAL;
2753 return dev->phy->ioctl(dev,cmd,arg);
2754 }
2755 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2756 board = ia_cmds.status;
2757 if ((board < 0) || (board > iadev_count))
2758 board = 0;
2759 iadev = ia_dev[board];
2760 switch (ia_cmds.cmd) {
2761 case MEMDUMP:
2762 {
2763 switch (ia_cmds.sub_cmd) {
2764 case MEMDUMP_DEV:
2765 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2766 if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2767 return -EFAULT;
2768 ia_cmds.status = 0;
2769 break;
2770 case MEMDUMP_SEGREG:
2771 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2772 tmps = (u16 __user *)ia_cmds.buf;
2773 for(i=0; i<0x80; i+=2, tmps++)
2774 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2775 ia_cmds.status = 0;
2776 ia_cmds.len = 0x80;
2777 break;
2778 case MEMDUMP_REASSREG:
2779 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2780 tmps = (u16 __user *)ia_cmds.buf;
2781 for(i=0; i<0x80; i+=2, tmps++)
2782 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2783 ia_cmds.status = 0;
2784 ia_cmds.len = 0x80;
2785 break;
2786 case MEMDUMP_FFL:
2787 {
2788 ia_regs_t *regs_local;
2789 ffredn_t *ffL;
2790 rfredn_t *rfL;
2791
2792 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2793 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2794 if (!regs_local) return -ENOMEM;
2795 ffL = &regs_local->ffredn;
2796 rfL = &regs_local->rfredn;
2797 /* Copy real rfred registers into the local copy */
2798 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2799 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2800 /* Copy real ffred registers into the local copy */
2801 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2802 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2803
2804 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2805 kfree(regs_local);
2806 return -EFAULT;
2807 }
2808 kfree(regs_local);
2809 printk("Board %d registers dumped\n", board);
2810 ia_cmds.status = 0;
2811 }
2812 break;
2813 case READ_REG:
2814 {
2815 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2816 desc_dbg(iadev);
2817 ia_cmds.status = 0;
2818 }
2819 break;
2820 case 0x6:
2821 {
2822 ia_cmds.status = 0;
2823 printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2824 printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2825 }
2826 break;
2827 case 0x8:
2828 {
2829 struct k_sonet_stats *stats;
2830 stats = &PRIV(_ia_dev[board])->sonet_stats;
2831 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2832 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2833 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2834 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2835 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2836 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2837 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2838 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2839 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2840 }
2841 ia_cmds.status = 0;
2842 break;
2843 case 0x9:
2844 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2845 for (i = 1; i <= iadev->num_rx_desc; i++)
2846 free_desc(_ia_dev[board], i);
2847 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2848 iadev->reass_reg+REASS_MASK_REG);
2849 iadev->rxing = 1;
2850
2851 ia_cmds.status = 0;
2852 break;
2853
2854 case 0xb:
2855 if (!capable(CAP_NET_ADMIN)) return -EPERM;
26c5c44d 2856 ia_frontend_intr(iadev);
1da177e4
LT		 2857 break;
2858 case 0xa:
2859 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2860 {
2861 ia_cmds.status = 0;
2862 IADebugFlag = ia_cmds.maddr;
2863 printk("New debug option loaded\n");
2864 }
2865 break;
2866 default:
2867 ia_cmds.status = 0;
2868 break;
2869 }
2870 }
2871 break;
2872 default:
2873 break;
2874
2875 }
2876 return 0;
2877}
2878
2879static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2880 void __user *optval, int optlen)
2881{
2882 IF_EVENT(printk(">ia_getsockopt\n");)
2883 return -EINVAL;
2884}
2885
2886static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
b7058842 2887 void __user *optval, unsigned int optlen)
1da177e4
LT		 2888{
2889 IF_EVENT(printk(">ia_setsockopt\n");)
2890 return -EINVAL;
2891}
2892
2893static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2894 IADEV *iadev;
2895 struct dle *wr_ptr;
2896 struct tx_buf_desc __iomem *buf_desc_ptr;
2897 int desc;
2898 int comp_code;
2899 int total_len;
2900 struct cpcs_trailer *trailer;
2901 struct ia_vcc *iavcc;
2902
2903 iadev = INPH_IA_DEV(vcc->dev);
2904 iavcc = INPH_IA_VCC(vcc);
2905 if (!iavcc->txing) {
2906 printk("discard packet on closed VC\n");
2907 if (vcc->pop)
2908 vcc->pop(vcc, skb);
2909 else
2910 dev_kfree_skb_any(skb);
2911 return 0;
2912 }
2913
2914 if (skb->len > iadev->tx_buf_sz - 8) {
2915 printk("Transmit size over tx buffer size\n");
2916 if (vcc->pop)
2917 vcc->pop(vcc, skb);
2918 else
2919 dev_kfree_skb_any(skb);
2920 return 0;
2921 }
97928f70 2922 if ((unsigned long)skb->data & 3) {
1da177e4
LT		 2923 printk("Misaligned SKB\n");
2924 if (vcc->pop)
2925 vcc->pop(vcc, skb);
2926 else
2927 dev_kfree_skb_any(skb);
2928 return 0;
2929 }
2930 /* Get a descriptor number from our free descriptor queue
2931 We get the descr number from the TCQ now, since I am using
2932 the TCQ as a free buffer queue. Initially TCQ will be
2933 initialized with all the descriptors and is hence, full.
2934 */
2935 desc = get_desc (iadev, iavcc);
2936 if (desc == 0xffff)
2937 return 1;
2938 comp_code = desc >> 13;
2939 desc &= 0x1fff;
2940
2941 if ((desc == 0) || (desc > iadev->num_tx_desc))
2942 {
2943 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2944 atomic_inc(&vcc->stats->tx);
2945 if (vcc->pop)
2946 vcc->pop(vcc, skb);
2947 else
2948 dev_kfree_skb_any(skb);
2949 return 0; /* return SUCCESS */
2950 }
2951
2952 if (comp_code)
2953 {
2954 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2955 desc, comp_code);)
2956 }
2957
2958 /* remember the desc and vcc mapping */
2959 iavcc->vc_desc_cnt++;
2960 iadev->desc_tbl[desc-1].iavcc = iavcc;
2961 iadev->desc_tbl[desc-1].txskb = skb;
2962 IA_SKB_STATE(skb) = 0;
2963
2964 iadev->ffL.tcq_rd += 2;
2965 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2966 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2967 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2968
2969 /* Put the descriptor number in the packet ready queue
2970 and put the updated write pointer in the DLE field
2971 */
2972 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2973
2974 iadev->ffL.prq_wr += 2;
2975 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2976 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2977
2978 /* Figure out the exact length of the packet and padding required to
2979 make it aligned on a 48 byte boundary. */
2980 total_len = skb->len + sizeof(struct cpcs_trailer);
2981 total_len = ((total_len + 47) / 48) * 48;
2982 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2983
2984 /* Put the packet in a tx buffer */
2985 trailer = iadev->tx_buf[desc-1].cpcs;
849e8caa
DH		 2986 IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n",
2987 skb, skb->data, skb->len, desc);)
1da177e4
LT		 2988 trailer->control = 0;
2989 /*big endian*/
2990 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2991 trailer->crc32 = 0; /* not needed - dummy bytes */
2992
2993 /* Display the packet */
2994 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2995 skb->len, tcnter++);
2996 xdump(skb->data, skb->len, "TX: ");
2997 printk("\n");)
2998
2999 /* Build the buffer descriptor */
3000 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
3001 buf_desc_ptr += desc; /* points to the corresponding entry */
3002 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
3003 /* Huh ? p.115 of users guide describes this as a read-only register */
3004 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
3005 buf_desc_ptr->vc_index = vcc->vci;
3006 buf_desc_ptr->bytes = total_len;
3007
3008 if (vcc->qos.txtp.traffic_class == ATM_ABR)
3009 clear_lockup (vcc, iadev);
3010
3011 /* Build the DLE structure */
3012 wr_ptr = iadev->tx_dle_q.write;
3013 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
ede58ef2
C		 3014 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
3015 skb->len, DMA_TO_DEVICE);
1da177e4
LT		 3016 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
3017 buf_desc_ptr->buf_start_lo;
b67445fc 3018 /* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
1da177e4
LT		 3019 wr_ptr->bytes = skb->len;
3020
3021 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3022 if ((wr_ptr->bytes >> 2) == 0xb)
3023 wr_ptr->bytes = 0x30;
3024
3025 wr_ptr->mode = TX_DLE_PSI;
3026 wr_ptr->prq_wr_ptr_data = 0;
3027
3028 /* end is not to be used for the DLE q */
3029 if (++wr_ptr == iadev->tx_dle_q.end)
3030 wr_ptr = iadev->tx_dle_q.start;
3031
3032 /* Build trailer dle */
3033 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3034 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3035 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3036
3037 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3038 wr_ptr->mode = DMA_INT_ENABLE;
3039 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3040
3041 /* end is not to be used for the DLE q */
3042 if (++wr_ptr == iadev->tx_dle_q.end)
3043 wr_ptr = iadev->tx_dle_q.start;
3044
3045 iadev->tx_dle_q.write = wr_ptr;
3046 ATM_DESC(skb) = vcc->vci;
3047 skb_queue_tail(&iadev->tx_dma_q, skb);
3048
3049 atomic_inc(&vcc->stats->tx);
3050 iadev->tx_pkt_cnt++;
3051 /* Increment transaction counter */
3052 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3053
3054#if 0
3055 /* add flow control logic */
3056 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3057 if (iavcc->vc_desc_cnt > 10) {
3058 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3059 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3060 iavcc->flow_inc = -1;
3061 iavcc->saved_tx_quota = vcc->tx_quota;
3062 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3063 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3064 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3065 iavcc->flow_inc = 0;
3066 }
3067 }
3068#endif
3069 IF_TX(printk("ia send done\n");)
3070 return 0;
3071}
3072
3073static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3074{
3075 IADEV *iadev;
1da177e4
LT		 3076 unsigned long flags;
3077
3078 iadev = INPH_IA_DEV(vcc->dev);
1da177e4
LT		 3079 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3080 {
3081 if (!skb)
3082 printk(KERN_CRIT "null skb in ia_send\n");
3083 else dev_kfree_skb_any(skb);
3084 return -EINVAL;
3085 }
3086 spin_lock_irqsave(&iadev->tx_lock, flags);
3087 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3088 dev_kfree_skb_any(skb);
3089 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3090 return -EINVAL;
3091 }
3092 ATM_SKB(skb)->vcc = vcc;
3093
3094 if (skb_peek(&iadev->tx_backlog)) {
3095 skb_queue_tail(&iadev->tx_backlog, skb);
3096 }
3097 else {
3098 if (ia_pkt_tx (vcc, skb)) {
3099 skb_queue_tail(&iadev->tx_backlog, skb);
3100 }
3101 }
3102 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3103 return 0;
3104
3105}
3106
3107static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3108{
3109 int left = *pos, n;
3110 char *tmpPtr;
3111 IADEV *iadev = INPH_IA_DEV(dev);
3112 if(!left--) {
3113 if (iadev->phy_type == FE_25MBIT_PHY) {
3114 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3115 return n;
3116 }
3117 if (iadev->phy_type == FE_DS3_PHY)
3118 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3119 else if (iadev->phy_type == FE_E3_PHY)
3120 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3121 else if (iadev->phy_type == FE_UTP_OPTION)
3122 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3123 else
3124 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3125 tmpPtr = page + n;
3126 if (iadev->pci_map_size == 0x40000)
3127 n += sprintf(tmpPtr, "-1KVC-");
3128 else
3129 n += sprintf(tmpPtr, "-4KVC-");
3130 tmpPtr = page + n;
3131 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3132 n += sprintf(tmpPtr, "1M \n");
3133 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3134 n += sprintf(tmpPtr, "512K\n");
3135 else
3136 n += sprintf(tmpPtr, "128K\n");
3137 return n;
3138 }
3139 if (!left) {
3140 return sprintf(page, " Number of Tx Buffer: %u\n"
3141 " Size of Tx Buffer : %u\n"
3142 " Number of Rx Buffer: %u\n"
3143 " Size of Rx Buffer : %u\n"
3144 " Packets Receiverd : %u\n"
3145 " Packets Transmitted: %u\n"
3146 " Cells Received : %u\n"
3147 " Cells Transmitted : %u\n"
3148 " Board Dropped Cells: %u\n"
3149 " Board Dropped Pkts : %u\n",
3150 iadev->num_tx_desc, iadev->tx_buf_sz,
3151 iadev->num_rx_desc, iadev->rx_buf_sz,
3152 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3153 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3154 iadev->drop_rxcell, iadev->drop_rxpkt);
3155 }
3156 return 0;
3157}
3158
3159static const struct atmdev_ops ops = {
3160 .open = ia_open,
3161 .close = ia_close,
3162 .ioctl = ia_ioctl,
3163 .getsockopt = ia_getsockopt,
3164 .setsockopt = ia_setsockopt,
3165 .send = ia_send,
3166 .phy_put = ia_phy_put,
3167 .phy_get = ia_phy_get,
3168 .change_qos = ia_change_qos,
3169 .proc_read = ia_proc_read,
3170 .owner = THIS_MODULE,
3171};
3172
6c44512d 3173static int ia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1da177e4
LT		 3174{
3175 struct atm_dev *dev;
3176 IADEV *iadev;
1da177e4
LT		 3177 int ret;
3178
f7141761 3179 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
1da177e4
LT		 3180 if (!iadev) {
3181 ret = -ENOMEM;
3182 goto err_out;
3183 }
f7141761 3184
1da177e4
LT		 3185 iadev->pci = pdev;
3186
3187 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3188 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3189 if (pci_enable_device(pdev)) {
3190 ret = -ENODEV;
3191 goto err_out_free_iadev;
3192 }
d9ca676b 3193 dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1, NULL);
1da177e4
LT		 3194 if (!dev) {
3195 ret = -ENOMEM;
3196 goto err_out_disable_dev;
3197 }
3198 dev->dev_data = iadev;
3199 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
849e8caa 3200 IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n", dev,
1da177e4
LT		 3201 iadev->LineRate);)
3202
c0ed0b60
JBD		 3203 pci_set_drvdata(pdev, dev);
3204
1da177e4
LT		 3205 ia_dev[iadev_count] = iadev;
3206 _ia_dev[iadev_count] = dev;
3207 iadev_count++;
1da177e4
LT		 3208 if (ia_init(dev) || ia_start(dev)) {
3209 IF_INIT(printk("IA register failed!\n");)
3210 iadev_count--;
3211 ia_dev[iadev_count] = NULL;
3212 _ia_dev[iadev_count] = NULL;
1da177e4
LT		 3213 ret = -EINVAL;
3214 goto err_out_deregister_dev;
3215 }
1da177e4
LT		 3216 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3217
3218 iadev->next_board = ia_boards;
3219 ia_boards = dev;
3220
1da177e4
LT		 3221 return 0;
3222
3223err_out_deregister_dev:
3224 atm_dev_deregister(dev);
3225err_out_disable_dev:
3226 pci_disable_device(pdev);
3227err_out_free_iadev:
3228 kfree(iadev);
3229err_out:
3230 return ret;
3231}
3232
6c44512d 3233static void ia_remove_one(struct pci_dev *pdev)
1da177e4
LT		 3234{
3235 struct atm_dev *dev = pci_get_drvdata(pdev);
3236 IADEV *iadev = INPH_IA_DEV(dev);
3237
d6c1d704
JBD		 3238 /* Disable phy interrupts */
3239 ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
3240 SUNI_RSOP_CIE);
1da177e4
LT		 3241 udelay(1);
3242
d6c1d704
JBD		 3243 if (dev->phy && dev->phy->stop)
3244 dev->phy->stop(dev);
3245
1da177e4
LT		 3246 /* De-register device */
3247 free_irq(iadev->irq, dev);
3248 iadev_count--;
3249 ia_dev[iadev_count] = NULL;
3250 _ia_dev[iadev_count] = NULL;
3251 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3252 atm_dev_deregister(dev);
3253
3254 iounmap(iadev->base);
3255 pci_disable_device(pdev);
3256
3257 ia_free_rx(iadev);
3258 ia_free_tx(iadev);
3259
3260 kfree(iadev);
3261}
3262
3263static struct pci_device_id ia_pci_tbl[] = {
3264 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3265 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3266 { 0,}
3267};
3268MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3269
3270static struct pci_driver ia_driver = {
3271 .name = DEV_LABEL,
3272 .id_table = ia_pci_tbl,
3273 .probe = ia_init_one,
6c44512d 3274 .remove = ia_remove_one,
1da177e4
LT		 3275};
3276
3277static int __init ia_module_init(void)
3278{
3279 int ret;
3280
3281 ret = pci_register_driver(&ia_driver);
3282 if (ret >= 0) {
3283 ia_timer.expires = jiffies + 3*HZ;
3284 add_timer(&ia_timer);
3285 } else
3286 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3287 return ret;
3288}
3289
3290static void __exit ia_module_exit(void)
3291{
3292 pci_unregister_driver(&ia_driver);
3293
3294 del_timer(&ia_timer);
3295}
3296
3297module_init(ia_module_init);
3298module_exit(ia_module_exit);
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