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[linux-2.6-block.git] / drivers / atm / iphase.c
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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
4091fb95 24 packet memory. The following are the change log and history:
1da177e4
LT		 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>
7c0f6ba6 61#include <linux/uaccess.h>
1da177e4
LT		 62#include <asm/string.h>
63#include <asm/byteorder.h>
420635f5
JL		 64#include <linux/vmalloc.h>
65#include <linux/jiffies.h>
ea443e5e 66#include <linux/nospec.h>
1da177e4
LT		 67#include "iphase.h"
68#include "suni.h"
b67445fc 69#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
2be63b87 70
1da177e4
LT		 71#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
72
73static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
74static void desc_dbg(IADEV *iadev);
75
76static IADEV *ia_dev[8];
77static struct atm_dev *_ia_dev[8];
78static int iadev_count;
24ed960a 79static void ia_led_timer(struct timer_list *unused);
1d27e3e2 80static DEFINE_TIMER(ia_timer, ia_led_timer);
1da177e4
LT		 81static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
82static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
83static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
84 |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
85
86module_param(IA_TX_BUF, int, 0);
87module_param(IA_TX_BUF_SZ, int, 0);
88module_param(IA_RX_BUF, int, 0);
89module_param(IA_RX_BUF_SZ, int, 0);
90module_param(IADebugFlag, uint, 0644);
91
92MODULE_LICENSE("GPL");
93
1da177e4
LT		 94/**************************** IA_LIB **********************************/
95
96static void ia_init_rtn_q (IARTN_Q *que)
97{
98 que->next = NULL;
99 que->tail = NULL;
100}
101
102static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
103{
104 data->next = NULL;
105 if (que->next == NULL)
106 que->next = que->tail = data;
107 else {
108 data->next = que->next;
109 que->next = data;
110 }
111 return;
112}
113
114static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
115 IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
21e26ff9
TH		 116 if (!entry)
117 return -ENOMEM;
1da177e4
LT		 118 entry->data = data;
119 entry->next = NULL;
120 if (que->next == NULL)
121 que->next = que->tail = entry;
122 else {
123 que->tail->next = entry;
124 que->tail = que->tail->next;
125 }
126 return 1;
127}
128
129static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
130 IARTN_Q *tmpdata;
131 if (que->next == NULL)
132 return NULL;
133 tmpdata = que->next;
134 if ( que->next == que->tail)
135 que->next = que->tail = NULL;
136 else
137 que->next = que->next->next;
138 return tmpdata;
139}
140
141static void ia_hack_tcq(IADEV *dev) {
142
143 u_short desc1;
144 u_short tcq_wr;
145 struct ia_vcc *iavcc_r = NULL;
146
147 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
148 while (dev->host_tcq_wr != tcq_wr) {
149 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
150 if (!desc1) ;
151 else if (!dev->desc_tbl[desc1 -1].timestamp) {
152 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
153 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
154 }
155 else if (dev->desc_tbl[desc1 -1].timestamp) {
156 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
157 printk("IA: Fatal err in get_desc\n");
158 continue;
159 }
160 iavcc_r->vc_desc_cnt--;
161 dev->desc_tbl[desc1 -1].timestamp = 0;
849e8caa
DH		 162 IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n",
163 dev->desc_tbl[desc1 -1].txskb, desc1);)
1da177e4
LT		 164 if (iavcc_r->pcr < dev->rate_limit) {
165 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
166 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
167 printk("ia_hack_tcq: No memory available\n");
168 }
169 dev->desc_tbl[desc1 -1].iavcc = NULL;
170 dev->desc_tbl[desc1 -1].txskb = NULL;
171 }
172 dev->host_tcq_wr += 2;
173 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
174 dev->host_tcq_wr = dev->ffL.tcq_st;
175 }
176} /* ia_hack_tcq */
177
178static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
179 u_short desc_num, i;
180 struct sk_buff *skb;
181 struct ia_vcc *iavcc_r = NULL;
182 unsigned long delta;
183 static unsigned long timer = 0;
184 int ltimeout;
185
186 ia_hack_tcq (dev);
420635f5 187 if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
1da177e4
LT		 188 timer = jiffies;
189 i=0;
190 while (i < dev->num_tx_desc) {
191 if (!dev->desc_tbl[i].timestamp) {
192 i++;
193 continue;
194 }
195 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
196 delta = jiffies - dev->desc_tbl[i].timestamp;
197 if (delta >= ltimeout) {
198 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
199 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
200 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
201 else
202 dev->ffL.tcq_rd -= 2;
203 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
204 if (!(skb = dev->desc_tbl[i].txskb) ||
205 !(iavcc_r = dev->desc_tbl[i].iavcc))
206 printk("Fatal err, desc table vcc or skb is NULL\n");
207 else
208 iavcc_r->vc_desc_cnt--;
209 dev->desc_tbl[i].timestamp = 0;
210 dev->desc_tbl[i].iavcc = NULL;
211 dev->desc_tbl[i].txskb = NULL;
212 }
213 i++;
214 } /* while */
215 }
216 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
217 return 0xFFFF;
218
219 /* Get the next available descriptor number from TCQ */
220 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
221
222 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
223 dev->ffL.tcq_rd += 2;
224 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
6f74dbbc 225 dev->ffL.tcq_rd = dev->ffL.tcq_st;
1da177e4
LT		 226 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
227 return 0xFFFF;
228 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
229 }
230
231 /* get system time */
232 dev->desc_tbl[desc_num -1].timestamp = jiffies;
233 return desc_num;
234}
235
236static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
237 u_char foundLockUp;
238 vcstatus_t *vcstatus;
239 u_short *shd_tbl;
240 u_short tempCellSlot, tempFract;
241 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
242 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
243 u_int i;
244
245 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
246 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
247 vcstatus->cnt++;
248 foundLockUp = 0;
249 if( vcstatus->cnt == 0x05 ) {
250 abr_vc += vcc->vci;
251 eabr_vc += vcc->vci;
252 if( eabr_vc->last_desc ) {
253 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
254 /* Wait for 10 Micro sec */
255 udelay(10);
256 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
257 foundLockUp = 1;
258 }
259 else {
260 tempCellSlot = abr_vc->last_cell_slot;
261 tempFract = abr_vc->fraction;
262 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
263 && (tempFract == dev->testTable[vcc->vci]->fract))
264 foundLockUp = 1;
265 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
266 dev->testTable[vcc->vci]->fract = tempFract;
267 }
268 } /* last descriptor */
269 vcstatus->cnt = 0;
270 } /* vcstatus->cnt */
271
272 if (foundLockUp) {
273 IF_ABR(printk("LOCK UP found\n");)
274 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
275 /* Wait for 10 Micro sec */
276 udelay(10);
277 abr_vc->status &= 0xFFF8;
278 abr_vc->status |= 0x0001; /* state is idle */
279 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
280 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
281 if (i < dev->num_vc)
282 shd_tbl[i] = vcc->vci;
283 else
284 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
285 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
286 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
287 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
288 vcstatus->cnt = 0;
289 } /* foundLockUp */
290
291 } /* if an ABR VC */
292
293
294}
295
296/*
297** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
298**
299** +----+----+------------------+-------------------------------+
300** | R | NZ | 5-bit exponent | 9-bit mantissa |
301** +----+----+------------------+-------------------------------+
302**
0779bf2d 303** R = reserved (written as 0)
1da177e4
LT		 304** NZ = 0 if 0 cells/sec; 1 otherwise
305**
306** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
307*/
308static u16
309cellrate_to_float(u32 cr)
310{
311
312#define NZ 0x4000
313#define M_BITS 9 /* Number of bits in mantissa */
314#define E_BITS 5 /* Number of bits in exponent */
315#define M_MASK 0x1ff
316#define E_MASK 0x1f
317 u16 flot;
318 u32 tmp = cr & 0x00ffffff;
319 int i = 0;
320 if (cr == 0)
321 return 0;
322 while (tmp != 1) {
323 tmp >>= 1;
324 i++;
325 }
326 if (i == M_BITS)
327 flot = NZ | (i << M_BITS) | (cr & M_MASK);
328 else if (i < M_BITS)
329 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
330 else
331 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
332 return flot;
333}
334
335#if 0
336/*
337** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
338*/
339static u32
340float_to_cellrate(u16 rate)
341{
342 u32 exp, mantissa, cps;
343 if ((rate & NZ) == 0)
344 return 0;
345 exp = (rate >> M_BITS) & E_MASK;
346 mantissa = rate & M_MASK;
347 if (exp == 0)
348 return 1;
349 cps = (1 << M_BITS) | mantissa;
350 if (exp == M_BITS)
351 cps = cps;
352 else if (exp > M_BITS)
353 cps <<= (exp - M_BITS);
354 else
355 cps >>= (M_BITS - exp);
356 return cps;
357}
358#endif
359
360static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
361 srv_p->class_type = ATM_ABR;
362 srv_p->pcr = dev->LineRate;
363 srv_p->mcr = 0;
364 srv_p->icr = 0x055cb7;
365 srv_p->tbe = 0xffffff;
366 srv_p->frtt = 0x3a;
367 srv_p->rif = 0xf;
368 srv_p->rdf = 0xb;
369 srv_p->nrm = 0x4;
370 srv_p->trm = 0x7;
371 srv_p->cdf = 0x3;
372 srv_p->adtf = 50;
373}
374
375static int
376ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
377 struct atm_vcc *vcc, u8 flag)
378{
379 f_vc_abr_entry *f_abr_vc;
380 r_vc_abr_entry *r_abr_vc;
381 u32 icr;
382 u8 trm, nrm, crm;
383 u16 adtf, air, *ptr16;
384 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
385 f_abr_vc += vcc->vci;
386 switch (flag) {
387 case 1: /* FFRED initialization */
388#if 0 /* sanity check */
389 if (srv_p->pcr == 0)
390 return INVALID_PCR;
391 if (srv_p->pcr > dev->LineRate)
392 srv_p->pcr = dev->LineRate;
393 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
394 return MCR_UNAVAILABLE;
395 if (srv_p->mcr > srv_p->pcr)
396 return INVALID_MCR;
397 if (!(srv_p->icr))
398 srv_p->icr = srv_p->pcr;
399 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
400 return INVALID_ICR;
401 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
402 return INVALID_TBE;
403 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
404 return INVALID_FRTT;
405 if (srv_p->nrm > MAX_NRM)
406 return INVALID_NRM;
407 if (srv_p->trm > MAX_TRM)
408 return INVALID_TRM;
409 if (srv_p->adtf > MAX_ADTF)
410 return INVALID_ADTF;
411 else if (srv_p->adtf == 0)
412 srv_p->adtf = 1;
413 if (srv_p->cdf > MAX_CDF)
414 return INVALID_CDF;
415 if (srv_p->rif > MAX_RIF)
416 return INVALID_RIF;
417 if (srv_p->rdf > MAX_RDF)
418 return INVALID_RDF;
419#endif
420 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
421 f_abr_vc->f_vc_type = ABR;
422 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
423 /* i.e 2**n = 2 << (n-1) */
424 f_abr_vc->f_nrm = nrm << 8 | nrm;
425 trm = 100000/(2 << (16 - srv_p->trm));
426 if ( trm == 0) trm = 1;
427 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
428 crm = srv_p->tbe / nrm;
429 if (crm == 0) crm = 1;
430 f_abr_vc->f_crm = crm & 0xff;
431 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
432 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
433 ((srv_p->tbe/srv_p->frtt)*1000000) :
434 (1000000/(srv_p->frtt/srv_p->tbe)));
435 f_abr_vc->f_icr = cellrate_to_float(icr);
436 adtf = (10000 * srv_p->adtf)/8192;
437 if (adtf == 0) adtf = 1;
438 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
439 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
440 f_abr_vc->f_acr = f_abr_vc->f_icr;
441 f_abr_vc->f_status = 0x0042;
442 break;
443 case 0: /* RFRED initialization */
444 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
445 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
446 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
447 r_abr_vc += vcc->vci;
448 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
449 air = srv_p->pcr << (15 - srv_p->rif);
450 if (air == 0) air = 1;
451 r_abr_vc->r_air = cellrate_to_float(air);
452 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
453 dev->sum_mcr += srv_p->mcr;
454 dev->n_abr++;
455 break;
456 default:
457 break;
458 }
459 return 0;
460}
461static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
462 u32 rateLow=0, rateHigh, rate;
463 int entries;
464 struct ia_vcc *ia_vcc;
465
466 int idealSlot =0, testSlot, toBeAssigned, inc;
467 u32 spacing;
468 u16 *SchedTbl, *TstSchedTbl;
469 u16 cbrVC, vcIndex;
470 u32 fracSlot = 0;
471 u32 sp_mod = 0;
472 u32 sp_mod2 = 0;
473
474 /* IpAdjustTrafficParams */
475 if (vcc->qos.txtp.max_pcr <= 0) {
476 IF_ERR(printk("PCR for CBR not defined\n");)
477 return -1;
478 }
479 rate = vcc->qos.txtp.max_pcr;
480 entries = rate / dev->Granularity;
481 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
482 entries, rate, dev->Granularity);)
483 if (entries < 1)
484 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
485 rateLow = entries * dev->Granularity;
486 rateHigh = (entries + 1) * dev->Granularity;
487 if (3*(rate - rateLow) > (rateHigh - rate))
488 entries++;
489 if (entries > dev->CbrRemEntries) {
490 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
491 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
492 entries, dev->CbrRemEntries);)
493 return -EBUSY;
494 }
495
496 ia_vcc = INPH_IA_VCC(vcc);
497 ia_vcc->NumCbrEntry = entries;
498 dev->sum_mcr += entries * dev->Granularity;
499 /* IaFFrednInsertCbrSched */
500 // Starting at an arbitrary location, place the entries into the table
501 // as smoothly as possible
502 cbrVC = 0;
503 spacing = dev->CbrTotEntries / entries;
504 sp_mod = dev->CbrTotEntries % entries; // get modulo
505 toBeAssigned = entries;
506 fracSlot = 0;
507 vcIndex = vcc->vci;
508 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
509 while (toBeAssigned)
510 {
511 // If this is the first time, start the table loading for this connection
512 // as close to entryPoint as possible.
513 if (toBeAssigned == entries)
514 {
515 idealSlot = dev->CbrEntryPt;
516 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
517 if (dev->CbrEntryPt >= dev->CbrTotEntries)
518 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
519 } else {
520 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
521 // in the table that would be smoothest
522 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
523 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
524 }
525 if (idealSlot >= (int)dev->CbrTotEntries)
526 idealSlot -= dev->CbrTotEntries;
527 // Continuously check around this ideal value until a null
528 // location is encountered.
529 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
530 inc = 0;
531 testSlot = idealSlot;
532 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
849e8caa
DH		 533 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n",
534 testSlot, TstSchedTbl,toBeAssigned);)
1da177e4
LT		 535 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
536 while (cbrVC) // If another VC at this location, we have to keep looking
537 {
538 inc++;
539 testSlot = idealSlot - inc;
540 if (testSlot < 0) { // Wrap if necessary
541 testSlot += dev->CbrTotEntries;
849e8caa
DH		 542 IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n",
543 SchedTbl,testSlot);)
1da177e4
LT		 544 }
545 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
546 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
547 if (!cbrVC)
548 break;
549 testSlot = idealSlot + inc;
550 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
551 testSlot -= dev->CbrTotEntries;
552 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
553 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
554 testSlot, toBeAssigned);)
555 }
556 // set table index and read in value
557 TstSchedTbl = (u16*)(SchedTbl + testSlot);
849e8caa
DH		 558 IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n",
559 TstSchedTbl,cbrVC,inc);)
1da177e4
LT		 560 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
561 } /* while */
562 // Move this VCI number into this location of the CBR Sched table.
710708e8 563 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex, sizeof(*TstSchedTbl));
1da177e4
LT		 564 dev->CbrRemEntries--;
565 toBeAssigned--;
566 } /* while */
567
568 /* IaFFrednCbrEnable */
569 dev->NumEnabledCBR++;
570 if (dev->NumEnabledCBR == 1) {
571 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
572 IF_CBR(printk("CBR is enabled\n");)
573 }
574 return 0;
575}
576static void ia_cbrVc_close (struct atm_vcc *vcc) {
577 IADEV *iadev;
578 u16 *SchedTbl, NullVci = 0;
579 u32 i, NumFound;
580
581 iadev = INPH_IA_DEV(vcc->dev);
582 iadev->NumEnabledCBR--;
583 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
584 if (iadev->NumEnabledCBR == 0) {
585 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
586 IF_CBR (printk("CBR support disabled\n");)
587 }
588 NumFound = 0;
589 for (i=0; i < iadev->CbrTotEntries; i++)
590 {
591 if (*SchedTbl == vcc->vci) {
592 iadev->CbrRemEntries++;
593 *SchedTbl = NullVci;
594 IF_CBR(NumFound++;)
595 }
596 SchedTbl++;
597 }
598 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
599}
600
601static int ia_avail_descs(IADEV *iadev) {
602 int tmp = 0;
603 ia_hack_tcq(iadev);
604 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
605 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
606 else
607 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
608 iadev->ffL.tcq_st) / 2;
609 return tmp;
610}
611
612static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
613
614static int ia_que_tx (IADEV *iadev) {
615 struct sk_buff *skb;
616 int num_desc;
617 struct atm_vcc *vcc;
1da177e4
LT		 618 num_desc = ia_avail_descs(iadev);
619
620 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
621 if (!(vcc = ATM_SKB(skb)->vcc)) {
622 dev_kfree_skb_any(skb);
623 printk("ia_que_tx: Null vcc\n");
624 break;
625 }
626 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
627 dev_kfree_skb_any(skb);
628 printk("Free the SKB on closed vci %d \n", vcc->vci);
629 break;
630 }
1da177e4
LT		 631 if (ia_pkt_tx (vcc, skb)) {
632 skb_queue_head(&iadev->tx_backlog, skb);
633 }
634 num_desc--;
635 }
636 return 0;
637}
638
639static void ia_tx_poll (IADEV *iadev) {
640 struct atm_vcc *vcc = NULL;
641 struct sk_buff *skb = NULL, *skb1 = NULL;
642 struct ia_vcc *iavcc;
643 IARTN_Q * rtne;
644
645 ia_hack_tcq(iadev);
646 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
647 skb = rtne->data.txskb;
648 if (!skb) {
649 printk("ia_tx_poll: skb is null\n");
650 goto out;
651 }
652 vcc = ATM_SKB(skb)->vcc;
653 if (!vcc) {
654 printk("ia_tx_poll: vcc is null\n");
655 dev_kfree_skb_any(skb);
656 goto out;
657 }
658
659 iavcc = INPH_IA_VCC(vcc);
660 if (!iavcc) {
661 printk("ia_tx_poll: iavcc is null\n");
662 dev_kfree_skb_any(skb);
663 goto out;
664 }
665
666 skb1 = skb_dequeue(&iavcc->txing_skb);
667 while (skb1 && (skb1 != skb)) {
668 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
669 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
670 }
671 IF_ERR(printk("Release the SKB not match\n");)
672 if ((vcc->pop) && (skb1->len != 0))
673 {
674 vcc->pop(vcc, skb1);
f3335545 675 IF_EVENT(printk("Transmit Done - skb 0x%lx return\n",
1da177e4
LT		 676 (long)skb1);)
677 }
678 else
679 dev_kfree_skb_any(skb1);
680 skb1 = skb_dequeue(&iavcc->txing_skb);
681 }
682 if (!skb1) {
683 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
684 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
685 break;
686 }
687 if ((vcc->pop) && (skb->len != 0))
688 {
689 vcc->pop(vcc, skb);
690 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
691 }
692 else
693 dev_kfree_skb_any(skb);
694 kfree(rtne);
695 }
696 ia_que_tx(iadev);
697out:
698 return;
699}
700#if 0
701static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
702{
703 u32 t;
704 int i;
705 /*
706 * Issue a command to enable writes to the NOVRAM
707 */
708 NVRAM_CMD (EXTEND + EWEN);
709 NVRAM_CLR_CE;
710 /*
711 * issue the write command
712 */
713 NVRAM_CMD(IAWRITE + addr);
714 /*
715 * Send the data, starting with D15, then D14, and so on for 16 bits
716 */
717 for (i=15; i>=0; i--) {
718 NVRAM_CLKOUT (val & 0x8000);
719 val <<= 1;
720 }
721 NVRAM_CLR_CE;
722 CFG_OR(NVCE);
723 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
724 while (!(t & NVDO))
725 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
726
727 NVRAM_CLR_CE;
728 /*
729 * disable writes again
730 */
731 NVRAM_CMD(EXTEND + EWDS)
732 NVRAM_CLR_CE;
733 CFG_AND(~NVDI);
734}
735#endif
736
737static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
738{
739 u_short val;
740 u32 t;
741 int i;
742 /*
743 * Read the first bit that was clocked with the falling edge of the
744 * the last command data clock
745 */
746 NVRAM_CMD(IAREAD + addr);
747 /*
748 * Now read the rest of the bits, the next bit read is D14, then D13,
749 * and so on.
750 */
751 val = 0;
752 for (i=15; i>=0; i--) {
753 NVRAM_CLKIN(t);
754 val |= (t << i);
755 }
756 NVRAM_CLR_CE;
757 CFG_AND(~NVDI);
758 return val;
759}
760
761static void ia_hw_type(IADEV *iadev) {
762 u_short memType = ia_eeprom_get(iadev, 25);
763 iadev->memType = memType;
764 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
765 iadev->num_tx_desc = IA_TX_BUF;
766 iadev->tx_buf_sz = IA_TX_BUF_SZ;
767 iadev->num_rx_desc = IA_RX_BUF;
768 iadev->rx_buf_sz = IA_RX_BUF_SZ;
769 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
770 if (IA_TX_BUF == DFL_TX_BUFFERS)
771 iadev->num_tx_desc = IA_TX_BUF / 2;
772 else
773 iadev->num_tx_desc = IA_TX_BUF;
774 iadev->tx_buf_sz = IA_TX_BUF_SZ;
775 if (IA_RX_BUF == DFL_RX_BUFFERS)
776 iadev->num_rx_desc = IA_RX_BUF / 2;
777 else
778 iadev->num_rx_desc = IA_RX_BUF;
779 iadev->rx_buf_sz = IA_RX_BUF_SZ;
780 }
781 else {
782 if (IA_TX_BUF == DFL_TX_BUFFERS)
783 iadev->num_tx_desc = IA_TX_BUF / 8;
784 else
785 iadev->num_tx_desc = IA_TX_BUF;
786 iadev->tx_buf_sz = IA_TX_BUF_SZ;
787 if (IA_RX_BUF == DFL_RX_BUFFERS)
788 iadev->num_rx_desc = IA_RX_BUF / 8;
789 else
790 iadev->num_rx_desc = IA_RX_BUF;
791 iadev->rx_buf_sz = IA_RX_BUF_SZ;
792 }
793 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
794 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
795 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
796 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
797
798#if 0
799 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
800 iadev->phy_type = PHY_OC3C_S;
801 else if ((memType & FE_MASK) == FE_UTP_OPTION)
802 iadev->phy_type = PHY_UTP155;
803 else
804 iadev->phy_type = PHY_OC3C_M;
805#endif
806
807 iadev->phy_type = memType & FE_MASK;
808 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
809 memType,iadev->phy_type);)
810 if (iadev->phy_type == FE_25MBIT_PHY)
811 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
812 else if (iadev->phy_type == FE_DS3_PHY)
813 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
814 else if (iadev->phy_type == FE_E3_PHY)
815 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
816 else
817 iadev->LineRate = (u32)(ATM_OC3_PCR);
818 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
819
820}
821
26c5c44d 822static u32 ia_phy_read32(struct iadev_priv *ia, unsigned int reg)
823{
824 return readl(ia->phy + (reg >> 2));
825}
826
827static void ia_phy_write32(struct iadev_priv *ia, unsigned int reg, u32 val)
828{
829 writel(val, ia->phy + (reg >> 2));
1da177e4
LT		 830}
831
26c5c44d 832static void ia_frontend_intr(struct iadev_priv *iadev)
833{
834 u32 status;
835
836 if (iadev->phy_type & FE_25MBIT_PHY) {
837 status = ia_phy_read32(iadev, MB25_INTR_STATUS);
838 iadev->carrier_detect = (status & MB25_IS_GSB) ? 1 : 0;
839 } else if (iadev->phy_type & FE_DS3_PHY) {
840 ia_phy_read32(iadev, SUNI_DS3_FRM_INTR_STAT);
841 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
842 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
843 } else if (iadev->phy_type & FE_E3_PHY) {
844 ia_phy_read32(iadev, SUNI_E3_FRM_MAINT_INTR_IND);
845 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
846 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
847 } else {
848 status = ia_phy_read32(iadev, SUNI_RSOP_STATUS);
849 iadev->carrier_detect = (status & SUNI_LOSV) ? 0 : 1;
850 }
851
852 printk(KERN_INFO "IA: SUNI carrier %s\n",
853 iadev->carrier_detect ? "detected" : "lost signal");
854}
855
856static void ia_mb25_init(struct iadev_priv *iadev)
1da177e4 857{
1da177e4
LT		 858#if 0
859 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
860#endif
26c5c44d 861 ia_phy_write32(iadev, MB25_MASTER_CTRL, MB25_MC_DRIC | MB25_MC_DREC);
862 ia_phy_write32(iadev, MB25_DIAG_CONTROL, 0);
863
864 iadev->carrier_detect =
865 (ia_phy_read32(iadev, MB25_INTR_STATUS) & MB25_IS_GSB) ? 1 : 0;
866}
1da177e4 867
26c5c44d 868struct ia_reg {
869 u16 reg;
870 u16 val;
871};
872
873static void ia_phy_write(struct iadev_priv *iadev,
874 const struct ia_reg *regs, int len)
1da177e4 875{
26c5c44d 876 while (len--) {
877 ia_phy_write32(iadev, regs->reg, regs->val);
878 regs++;
879 }
880}
881
882static void ia_suni_pm7345_init_ds3(struct iadev_priv *iadev)
883{
8caae31a 884 static const struct ia_reg suni_ds3_init[] = {
26c5c44d 885 { SUNI_DS3_FRM_INTR_ENBL, 0x17 },
886 { SUNI_DS3_FRM_CFG, 0x01 },
887 { SUNI_DS3_TRAN_CFG, 0x01 },
888 { SUNI_CONFIG, 0 },
889 { SUNI_SPLR_CFG, 0 },
890 { SUNI_SPLT_CFG, 0 }
891 };
892 u32 status;
893
894 status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
895 iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1;
896
897 ia_phy_write(iadev, suni_ds3_init, ARRAY_SIZE(suni_ds3_init));
898}
899
900static void ia_suni_pm7345_init_e3(struct iadev_priv *iadev)
901{
8caae31a 902 static const struct ia_reg suni_e3_init[] = {
26c5c44d 903 { SUNI_E3_FRM_FRAM_OPTIONS, 0x04 },
904 { SUNI_E3_FRM_MAINT_OPTIONS, 0x20 },
905 { SUNI_E3_FRM_FRAM_INTR_ENBL, 0x1d },
906 { SUNI_E3_FRM_MAINT_INTR_ENBL, 0x30 },
907 { SUNI_E3_TRAN_STAT_DIAG_OPTIONS, 0 },
908 { SUNI_E3_TRAN_FRAM_OPTIONS, 0x01 },
909 { SUNI_CONFIG, SUNI_PM7345_E3ENBL },
910 { SUNI_SPLR_CFG, 0x41 },
911 { SUNI_SPLT_CFG, 0x41 }
912 };
913 u32 status;
914
915 status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
916 iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1;
917 ia_phy_write(iadev, suni_e3_init, ARRAY_SIZE(suni_e3_init));
918}
919
920static void ia_suni_pm7345_init(struct iadev_priv *iadev)
921{
8caae31a 922 static const struct ia_reg suni_init[] = {
26c5c44d 923 /* Enable RSOP loss of signal interrupt. */
924 { SUNI_INTR_ENBL, 0x28 },
925 /* Clear error counters. */
926 { SUNI_ID_RESET, 0 },
927 /* Clear "PMCTST" in master test register. */
928 { SUNI_MASTER_TEST, 0 },
929
930 { SUNI_RXCP_CTRL, 0x2c },
931 { SUNI_RXCP_FCTRL, 0x81 },
932
933 { SUNI_RXCP_IDLE_PAT_H1, 0 },
934 { SUNI_RXCP_IDLE_PAT_H2, 0 },
935 { SUNI_RXCP_IDLE_PAT_H3, 0 },
936 { SUNI_RXCP_IDLE_PAT_H4, 0x01 },
937
938 { SUNI_RXCP_IDLE_MASK_H1, 0xff },
939 { SUNI_RXCP_IDLE_MASK_H2, 0xff },
940 { SUNI_RXCP_IDLE_MASK_H3, 0xff },
941 { SUNI_RXCP_IDLE_MASK_H4, 0xfe },
942
943 { SUNI_RXCP_CELL_PAT_H1, 0 },
944 { SUNI_RXCP_CELL_PAT_H2, 0 },
945 { SUNI_RXCP_CELL_PAT_H3, 0 },
946 { SUNI_RXCP_CELL_PAT_H4, 0x01 },
947
948 { SUNI_RXCP_CELL_MASK_H1, 0xff },
949 { SUNI_RXCP_CELL_MASK_H2, 0xff },
950 { SUNI_RXCP_CELL_MASK_H3, 0xff },
951 { SUNI_RXCP_CELL_MASK_H4, 0xff },
952
953 { SUNI_TXCP_CTRL, 0xa4 },
954 { SUNI_TXCP_INTR_EN_STS, 0x10 },
955 { SUNI_TXCP_IDLE_PAT_H5, 0x55 }
956 };
957
958 if (iadev->phy_type & FE_DS3_PHY)
959 ia_suni_pm7345_init_ds3(iadev);
960 else
961 ia_suni_pm7345_init_e3(iadev);
962
963 ia_phy_write(iadev, suni_init, ARRAY_SIZE(suni_init));
964
965 ia_phy_write32(iadev, SUNI_CONFIG, ia_phy_read32(iadev, SUNI_CONFIG) &
966 ~(SUNI_PM7345_LLB | SUNI_PM7345_CLB |
967 SUNI_PM7345_DLB | SUNI_PM7345_PLB));
1da177e4
LT		 968#ifdef __SNMP__
969 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
970#endif /* __SNMP__ */
971 return;
972}
973
974
975/***************************** IA_LIB END *****************************/
976
a22eb6fa 977#ifdef CONFIG_ATM_IA_DEBUG
1da177e4
LT		 978static int tcnter = 0;
979static void xdump( u_char* cp, int length, char* prefix )
980{
981 int col, count;
982 u_char prntBuf[120];
983 u_char* pBuf = prntBuf;
984 count = 0;
985 while(count < length){
986 pBuf += sprintf( pBuf, "%s", prefix );
987 for(col = 0;count + col < length && col < 16; col++){
988 if (col != 0 && (col % 4) == 0)
989 pBuf += sprintf( pBuf, " " );
990 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
991 }
992 while(col++ < 16){ /* pad end of buffer with blanks */
993 if ((col % 4) == 0)
994 sprintf( pBuf, " " );
995 pBuf += sprintf( pBuf, " " );
996 }
997 pBuf += sprintf( pBuf, " " );
998 for(col = 0;count + col < length && col < 16; col++){
999 if (isprint((int)cp[count + col]))
1000 pBuf += sprintf( pBuf, "%c", cp[count + col] );
1001 else
1002 pBuf += sprintf( pBuf, "." );
1003 }
32f3dde5 1004 printk("%s\n", prntBuf);
1da177e4
LT		 1005 count += col;
1006 pBuf = prntBuf;
1007 }
1008
1009} /* close xdump(... */
a22eb6fa 1010#endif /* CONFIG_ATM_IA_DEBUG */
1da177e4
LT		 1011
1012
1013static struct atm_dev *ia_boards = NULL;
1014
1015#define ACTUAL_RAM_BASE \
1016 RAM_BASE*((iadev->mem)/(128 * 1024))
1017#define ACTUAL_SEG_RAM_BASE \
1018 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1019#define ACTUAL_REASS_RAM_BASE \
1020 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1021
1022
1023/*-- some utilities and memory allocation stuff will come here -------------*/
1024
1025static void desc_dbg(IADEV *iadev) {
1026
1027 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1028 u32 i;
1029 void __iomem *tmp;
1030 // regval = readl((u32)ia_cmds->maddr);
1031 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1032 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1033 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1034 readw(iadev->seg_ram+tcq_wr_ptr-2));
1035 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1036 iadev->ffL.tcq_rd);
1037 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1038 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1039 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1040 i = 0;
1041 while (tcq_st_ptr != tcq_ed_ptr) {
1042 tmp = iadev->seg_ram+tcq_st_ptr;
1043 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1044 tcq_st_ptr += 2;
1045 }
1046 for(i=0; i <iadev->num_tx_desc; i++)
1047 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1048}
1049
1050
25985edc 1051/*----------------------------- Receiving side stuff --------------------------*/
1da177e4
LT		 1052
1053static void rx_excp_rcvd(struct atm_dev *dev)
1054{
1055#if 0 /* closing the receiving size will cause too many excp int */
1056 IADEV *iadev;
1057 u_short state;
1058 u_short excpq_rd_ptr;
1059 //u_short *ptr;
1060 int vci, error = 1;
1061 iadev = INPH_IA_DEV(dev);
1062 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1063 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1064 { printk("state = %x \n", state);
1065 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1066 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1067 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1068 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1069 // TODO: update exception stat
1070 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1071 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1072 // pwang_test
1073 excpq_rd_ptr += 4;
1074 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1075 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1076 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1077 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1078 }
1079#endif
1080}
1081
1082static void free_desc(struct atm_dev *dev, int desc)
1083{
1084 IADEV *iadev;
1085 iadev = INPH_IA_DEV(dev);
1086 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1087 iadev->rfL.fdq_wr +=2;
1088 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1089 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1090 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1091}
1092
1093
1094static int rx_pkt(struct atm_dev *dev)
1095{
1096 IADEV *iadev;
1097 struct atm_vcc *vcc;
1098 unsigned short status;
1099 struct rx_buf_desc __iomem *buf_desc_ptr;
1100 int desc;
1101 struct dle* wr_ptr;
1102 int len;
1103 struct sk_buff *skb;
1104 u_int buf_addr, dma_addr;
1105
1106 iadev = INPH_IA_DEV(dev);
1107 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1108 {
1109 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1110 return -EINVAL;
1111 }
1112 /* mask 1st 3 bits to get the actual descno. */
1113 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1114 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1115 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1116 printk(" pcq_wr_ptr = 0x%x\n",
1117 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1118 /* update the read pointer - maybe we shud do this in the end*/
1119 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1120 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1121 else
1122 iadev->rfL.pcq_rd += 2;
1123 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1124
1125 /* get the buffer desc entry.
1126 update stuff. - doesn't seem to be any update necessary
1127 */
1128 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1129 /* make the ptr point to the corresponding buffer desc entry */
1130 buf_desc_ptr += desc;
1131 if (!desc || (desc > iadev->num_rx_desc) ||
f2633d2e 1132 ((buf_desc_ptr->vc_index & 0xffff) >= iadev->num_vc)) {
1da177e4
LT		 1133 free_desc(dev, desc);
1134 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1135 return -1;
1136 }
1137 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1138 if (!vcc)
1139 {
1140 free_desc(dev, desc);
1141 printk("IA: null vcc, drop PDU\n");
1142 return -1;
1143 }
1144
1145
1146 /* might want to check the status bits for errors */
1147 status = (u_short) (buf_desc_ptr->desc_mode);
1148 if (status & (RX_CER | RX_PTE | RX_OFL))
1149 {
1150 atomic_inc(&vcc->stats->rx_err);
1151 IF_ERR(printk("IA: bad packet, dropping it");)
1152 if (status & RX_CER) {
1153 IF_ERR(printk(" cause: packet CRC error\n");)
1154 }
1155 else if (status & RX_PTE) {
1156 IF_ERR(printk(" cause: packet time out\n");)
1157 }
1158 else {
af901ca1 1159 IF_ERR(printk(" cause: buffer overflow\n");)
1da177e4
LT		 1160 }
1161 goto out_free_desc;
1162 }
1163
1164 /*
1165 build DLE.
1166 */
1167
1168 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1169 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1170 len = dma_addr - buf_addr;
1171 if (len > iadev->rx_buf_sz) {
1172 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1173 atomic_inc(&vcc->stats->rx_err);
1174 goto out_free_desc;
1175 }
1176
1177 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1178 if (vcc->vci < 32)
1179 printk("Drop control packets\n");
cbb41b91 1180 goto out_free_desc;
1da177e4
LT		 1181 }
1182 skb_put(skb,len);
1183 // pwang_test
1184 ATM_SKB(skb)->vcc = vcc;
1185 ATM_DESC(skb) = desc;
1186 skb_queue_tail(&iadev->rx_dma_q, skb);
1187
1188 /* Build the DLE structure */
1189 wr_ptr = iadev->rx_dle_q.write;
ede58ef2
C		 1190 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
1191 len, DMA_FROM_DEVICE);
1da177e4
LT		 1192 wr_ptr->local_pkt_addr = buf_addr;
1193 wr_ptr->bytes = len; /* We don't know this do we ?? */
1194 wr_ptr->mode = DMA_INT_ENABLE;
1195
1196 /* shud take care of wrap around here too. */
1197 if(++wr_ptr == iadev->rx_dle_q.end)
1198 wr_ptr = iadev->rx_dle_q.start;
1199 iadev->rx_dle_q.write = wr_ptr;
1200 udelay(1);
1201 /* Increment transaction counter */
1202 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1203out: return 0;
1204out_free_desc:
1205 free_desc(dev, desc);
1206 goto out;
1207}
1208
1209static void rx_intr(struct atm_dev *dev)
1210{
1211 IADEV *iadev;
1212 u_short status;
1213 u_short state, i;
1214
1215 iadev = INPH_IA_DEV(dev);
1216 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1217 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1218 if (status & RX_PKT_RCVD)
1219 {
1220 /* do something */
25985edc 1221 /* Basically recvd an interrupt for receiving a packet.
1da177e4
LT		 1222 A descriptor would have been written to the packet complete
1223 queue. Get all the descriptors and set up dma to move the
1224 packets till the packet complete queue is empty..
1225 */
1226 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1227 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1228 while(!(state & PCQ_EMPTY))
1229 {
1230 rx_pkt(dev);
1231 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1232 }
1233 iadev->rxing = 1;
1234 }
1235 if (status & RX_FREEQ_EMPT)
1236 {
1237 if (iadev->rxing) {
1238 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1239 iadev->rx_tmp_jif = jiffies;
1240 iadev->rxing = 0;
1241 }
420635f5 1242 else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
1da177e4
LT		 1243 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1244 for (i = 1; i <= iadev->num_rx_desc; i++)
1245 free_desc(dev, i);
1246printk("Test logic RUN!!!!\n");
1247 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1248 iadev->rxing = 1;
1249 }
1250 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1251 }
1252
1253 if (status & RX_EXCP_RCVD)
1254 {
1255 /* probably need to handle the exception queue also. */
1256 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1257 rx_excp_rcvd(dev);
1258 }
1259
1260
1261 if (status & RX_RAW_RCVD)
1262 {
1263 /* need to handle the raw incoming cells. This deepnds on
1264 whether we have programmed to receive the raw cells or not.
1265 Else ignore. */
1266 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1267 }
1268}
1269
1270
1271static void rx_dle_intr(struct atm_dev *dev)
1272{
1273 IADEV *iadev;
1274 struct atm_vcc *vcc;
1275 struct sk_buff *skb;
1276 int desc;
1277 u_short state;
1278 struct dle *dle, *cur_dle;
1279 u_int dle_lp;
1280 int len;
1281 iadev = INPH_IA_DEV(dev);
1282
1283 /* free all the dles done, that is just update our own dle read pointer
1284 - do we really need to do this. Think not. */
1285 /* DMA is done, just get all the recevie buffers from the rx dma queue
1286 and push them up to the higher layer protocol. Also free the desc
1287 associated with the buffer. */
1288 dle = iadev->rx_dle_q.read;
1289 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1290 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1291 while(dle != cur_dle)
1292 {
1293 /* free the DMAed skb */
1294 skb = skb_dequeue(&iadev->rx_dma_q);
1295 if (!skb)
1296 goto INCR_DLE;
1297 desc = ATM_DESC(skb);
1298 free_desc(dev, desc);
1299
1300 if (!(len = skb->len))
1301 {
1302 printk("rx_dle_intr: skb len 0\n");
1303 dev_kfree_skb_any(skb);
1304 }
1305 else
1306 {
1307 struct cpcs_trailer *trailer;
1308 u_short length;
1309 struct ia_vcc *ia_vcc;
1310
ede58ef2
C		 1311 dma_unmap_single(&iadev->pci->dev, iadev->rx_dle_q.write->sys_pkt_addr,
1312 len, DMA_FROM_DEVICE);
1da177e4
LT		 1313 /* no VCC related housekeeping done as yet. lets see */
1314 vcc = ATM_SKB(skb)->vcc;
1315 if (!vcc) {
1316 printk("IA: null vcc\n");
1317 dev_kfree_skb_any(skb);
1318 goto INCR_DLE;
1319 }
1320 ia_vcc = INPH_IA_VCC(vcc);
1321 if (ia_vcc == NULL)
1322 {
1323 atomic_inc(&vcc->stats->rx_err);
49f5ed42 1324 atm_return(vcc, skb->truesize);
1da177e4 1325 dev_kfree_skb_any(skb);
1da177e4
LT		 1326 goto INCR_DLE;
1327 }
1328 // get real pkt length pwang_test
1329 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1330 skb->len - sizeof(*trailer));
b67445fc 1331 length = swap_byte_order(trailer->length);
1da177e4
LT		 1332 if ((length > iadev->rx_buf_sz) || (length >
1333 (skb->len - sizeof(struct cpcs_trailer))))
1334 {
1335 atomic_inc(&vcc->stats->rx_err);
1336 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1337 length, skb->len);)
49f5ed42 1338 atm_return(vcc, skb->truesize);
1da177e4 1339 dev_kfree_skb_any(skb);
1da177e4
LT		 1340 goto INCR_DLE;
1341 }
1342 skb_trim(skb, length);
1343
1344 /* Display the packet */
1345 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1346 xdump(skb->data, skb->len, "RX: ");
1347 printk("\n");)
1348
1349 IF_RX(printk("rx_dle_intr: skb push");)
1350 vcc->push(vcc,skb);
1351 atomic_inc(&vcc->stats->rx);
1352 iadev->rx_pkt_cnt++;
1353 }
1354INCR_DLE:
1355 if (++dle == iadev->rx_dle_q.end)
1356 dle = iadev->rx_dle_q.start;
1357 }
1358 iadev->rx_dle_q.read = dle;
1359
1360 /* if the interrupts are masked because there were no free desc available,
1361 unmask them now. */
1362 if (!iadev->rxing) {
1363 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1364 if (!(state & FREEQ_EMPTY)) {
1365 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1366 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1367 iadev->reass_reg+REASS_MASK_REG);
1368 iadev->rxing++;
1369 }
1370 }
1371}
1372
1373
1374static int open_rx(struct atm_vcc *vcc)
1375{
1376 IADEV *iadev;
1377 u_short __iomem *vc_table;
1378 u_short __iomem *reass_ptr;
1379 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1380
1381 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1382 iadev = INPH_IA_DEV(vcc->dev);
1383 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1384 if (iadev->phy_type & FE_25MBIT_PHY) {
1385 printk("IA: ABR not support\n");
1386 return -EINVAL;
1387 }
1388 }
1389 /* Make only this VCI in the vc table valid and let all
1390 others be invalid entries */
1391 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1392 vc_table += vcc->vci;
1393 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1394
1395 *vc_table = vcc->vci << 6;
1396 /* Also keep a list of open rx vcs so that we can attach them with
1397 incoming PDUs later. */
1398 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1399 (vcc->qos.txtp.traffic_class == ATM_ABR))
1400 {
1401 srv_cls_param_t srv_p;
1402 init_abr_vc(iadev, &srv_p);
1403 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1404 }
1405 else { /* for UBR later may need to add CBR logic */
1406 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1407 reass_ptr += vcc->vci;
1408 *reass_ptr = NO_AAL5_PKT;
1409 }
1410
1411 if (iadev->rx_open[vcc->vci])
1412 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1413 vcc->dev->number, vcc->vci);
1414 iadev->rx_open[vcc->vci] = vcc;
1415 return 0;
1416}
1417
1418static int rx_init(struct atm_dev *dev)
1419{
1420 IADEV *iadev;
1421 struct rx_buf_desc __iomem *buf_desc_ptr;
1422 unsigned long rx_pkt_start = 0;
1423 void *dle_addr;
1424 struct abr_vc_table *abr_vc_table;
1425 u16 *vc_table;
1426 u16 *reass_table;
1da177e4
LT		 1427 int i,j, vcsize_sel;
1428 u_short freeq_st_adr;
1429 u_short *freeq_start;
1430
1431 iadev = INPH_IA_DEV(dev);
1432 // spin_lock_init(&iadev->rx_lock);
1433
1434 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
ede58ef2
C		 1435 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1436 &iadev->rx_dle_dma, GFP_KERNEL);
1da177e4
LT		 1437 if (!dle_addr) {
1438 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1439 goto err_out;
1440 }
97928f70 1441 iadev->rx_dle_q.start = (struct dle *)dle_addr;
1da177e4
LT		 1442 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1443 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
97928f70 1444 iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1da177e4
LT		 1445 /* the end of the dle q points to the entry after the last
1446 DLE that can be used. */
1447
1448 /* write the upper 20 bits of the start address to rx list address register */
97928f70 1449 /* We know this is 32bit bus addressed so the following is safe */
1da177e4
LT		 1450 writel(iadev->rx_dle_dma & 0xfffff000,
1451 iadev->dma + IPHASE5575_RX_LIST_ADDR);
849e8caa
DH		 1452 IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n",
1453 iadev->dma+IPHASE5575_TX_LIST_ADDR,
26c5c44d 1454 readl(iadev->dma + IPHASE5575_TX_LIST_ADDR));
849e8caa
DH		 1455 printk("Rx Dle list addr: 0x%p value: 0x%0x\n",
1456 iadev->dma+IPHASE5575_RX_LIST_ADDR,
26c5c44d 1457 readl(iadev->dma + IPHASE5575_RX_LIST_ADDR));)
1da177e4
LT		 1458
1459 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1460 writew(0, iadev->reass_reg+MODE_REG);
1461 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1462
1463 /* Receive side control memory map
1464 -------------------------------
1465
1466 Buffer descr 0x0000 (736 - 23K)
1467 VP Table 0x5c00 (256 - 512)
1468 Except q 0x5e00 (128 - 512)
1469 Free buffer q 0x6000 (1K - 2K)
1470 Packet comp q 0x6800 (1K - 2K)
1471 Reass Table 0x7000 (1K - 2K)
1472 VC Table 0x7800 (1K - 2K)
1473 ABR VC Table 0x8000 (1K - 32K)
1474 */
1475
1476 /* Base address for Buffer Descriptor Table */
1477 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1478 /* Set the buffer size register */
1479 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1480
1481 /* Initialize each entry in the Buffer Descriptor Table */
1482 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1483 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1484 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1485 buf_desc_ptr++;
1486 rx_pkt_start = iadev->rx_pkt_ram;
1487 for(i=1; i<=iadev->num_rx_desc; i++)
1488 {
1489 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1490 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1491 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1492 buf_desc_ptr++;
1493 rx_pkt_start += iadev->rx_buf_sz;
1494 }
849e8caa 1495 IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n", buf_desc_ptr);)
1da177e4
LT		 1496 i = FREE_BUF_DESC_Q*iadev->memSize;
1497 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1498 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1499 writew(i+iadev->num_rx_desc*sizeof(u_short),
1500 iadev->reass_reg+FREEQ_ED_ADR);
1501 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1502 writew(i+iadev->num_rx_desc*sizeof(u_short),
1503 iadev->reass_reg+FREEQ_WR_PTR);
1504 /* Fill the FREEQ with all the free descriptors. */
1505 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1506 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1507 for(i=1; i<=iadev->num_rx_desc; i++)
1508 {
1509 *freeq_start = (u_short)i;
1510 freeq_start++;
1511 }
849e8caa 1512 IF_INIT(printk("freeq_start: 0x%p\n", freeq_start);)
1da177e4
LT		 1513 /* Packet Complete Queue */
1514 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1515 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1516 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1517 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1518 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1519
1520 /* Exception Queue */
1521 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1522 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1523 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1524 iadev->reass_reg+EXCP_Q_ED_ADR);
1525 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1526 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1527
1528 /* Load local copy of FREEQ and PCQ ptrs */
1529 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1530 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1531 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1532 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1533 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1534 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1535 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1536 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1537
1538 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1539 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1540 iadev->rfL.pcq_wr);)
1541 /* just for check - no VP TBL */
1542 /* VP Table */
1543 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1544 /* initialize VP Table for invalid VPIs
1545 - I guess we can write all 1s or 0x000f in the entire memory
1546 space or something similar.
1547 */
1548
1549 /* This seems to work and looks right to me too !!! */
1550 i = REASS_TABLE * iadev->memSize;
1551 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1552 /* initialize Reassembly table to I don't know what ???? */
1553 reass_table = (u16 *)(iadev->reass_ram+i);
1554 j = REASS_TABLE_SZ * iadev->memSize;
1555 for(i=0; i < j; i++)
1556 *reass_table++ = NO_AAL5_PKT;
1557 i = 8*1024;
1558 vcsize_sel = 0;
1559 while (i != iadev->num_vc) {
1560 i /= 2;
1561 vcsize_sel++;
1562 }
1563 i = RX_VC_TABLE * iadev->memSize;
1564 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1565 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1566 j = RX_VC_TABLE_SZ * iadev->memSize;
1567 for(i = 0; i < j; i++)
1568 {
1569 /* shift the reassembly pointer by 3 + lower 3 bits of
1570 vc_lkup_base register (=3 for 1K VCs) and the last byte
1571 is those low 3 bits.
1572 Shall program this later.
1573 */
1574 *vc_table = (i << 6) | 15; /* for invalid VCI */
1575 vc_table++;
1576 }
1577 /* ABR VC table */
1578 i = ABR_VC_TABLE * iadev->memSize;
1579 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1580
1581 i = ABR_VC_TABLE * iadev->memSize;
1582 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1583 j = REASS_TABLE_SZ * iadev->memSize;
1584 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1585 for(i = 0; i < j; i++) {
1586 abr_vc_table->rdf = 0x0003;
1587 abr_vc_table->air = 0x5eb1;
1588 abr_vc_table++;
1589 }
1590
1591 /* Initialize other registers */
1592
1593 /* VP Filter Register set for VC Reassembly only */
1594 writew(0xff00, iadev->reass_reg+VP_FILTER);
1595 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1596 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1597
1598 /* Packet Timeout Count related Registers :
1599 Set packet timeout to occur in about 3 seconds
1600 Set Packet Aging Interval count register to overflow in about 4 us
1601 */
1602 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
97928f70
AC		 1603
1604 i = (j >> 6) & 0xFF;
1605 j += 2 * (j - 1);
1606 i |= ((j << 2) & 0xFF00);
1da177e4 1607 writew(i, iadev->reass_reg+TMOUT_RANGE);
97928f70 1608
1da177e4
LT		 1609 /* initiate the desc_tble */
1610 for(i=0; i<iadev->num_tx_desc;i++)
1611 iadev->desc_tbl[i].timestamp = 0;
1612
1613 /* to clear the interrupt status register - read it */
1614 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1615
1616 /* Mask Register - clear it */
1617 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1618
1619 skb_queue_head_init(&iadev->rx_dma_q);
1620 iadev->rx_free_desc_qhead = NULL;
f7141761 1621
92291c95 1622 iadev->rx_open = kcalloc(iadev->num_vc, sizeof(void *), GFP_KERNEL);
f7141761 1623 if (!iadev->rx_open) {
1da177e4
LT		 1624 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1625 dev->number);
1626 goto err_free_dle;
1627 }
f7141761 1628
1da177e4
LT		 1629 iadev->rxing = 1;
1630 iadev->rx_pkt_cnt = 0;
1631 /* Mode Register */
1632 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1633 return 0;
1634
1635err_free_dle:
ede58ef2
C		 1636 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1637 iadev->rx_dle_dma);
1da177e4
LT		 1638err_out:
1639 return -ENOMEM;
1640}
1641
1642
1643/*
1644 The memory map suggested in appendix A and the coding for it.
1645 Keeping it around just in case we change our mind later.
1646
1647 Buffer descr 0x0000 (128 - 4K)
1648 UBR sched 0x1000 (1K - 4K)
1649 UBR Wait q 0x2000 (1K - 4K)
1650 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1651 (128 - 256) each
1652 extended VC 0x4000 (1K - 8K)
1653 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1654 CBR sched 0x7000 (as needed)
1655 VC table 0x8000 (1K - 32K)
1656*/
1657
1658static void tx_intr(struct atm_dev *dev)
1659{
1660 IADEV *iadev;
1661 unsigned short status;
1662 unsigned long flags;
1663
1664 iadev = INPH_IA_DEV(dev);
1665
1666 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1667 if (status & TRANSMIT_DONE){
1668
f3335545 1669 IF_EVENT(printk("Transmit Done Intr logic run\n");)
1da177e4
LT		 1670 spin_lock_irqsave(&iadev->tx_lock, flags);
1671 ia_tx_poll(iadev);
1672 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1673 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1674 if (iadev->close_pending)
1675 wake_up(&iadev->close_wait);
1676 }
1677 if (status & TCQ_NOT_EMPTY)
1678 {
1679 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1680 }
1681}
1682
1683static void tx_dle_intr(struct atm_dev *dev)
1684{
1685 IADEV *iadev;
1686 struct dle *dle, *cur_dle;
1687 struct sk_buff *skb;
1688 struct atm_vcc *vcc;
1689 struct ia_vcc *iavcc;
1690 u_int dle_lp;
1691 unsigned long flags;
1692
1693 iadev = INPH_IA_DEV(dev);
1694 spin_lock_irqsave(&iadev->tx_lock, flags);
1695 dle = iadev->tx_dle_q.read;
1696 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1697 (sizeof(struct dle)*DLE_ENTRIES - 1);
1698 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1699 while (dle != cur_dle)
1700 {
1701 /* free the DMAed skb */
1702 skb = skb_dequeue(&iadev->tx_dma_q);
1703 if (!skb) break;
1704
1705 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1706 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
ede58ef2
C		 1707 dma_unmap_single(&iadev->pci->dev, dle->sys_pkt_addr, skb->len,
1708 DMA_TO_DEVICE);
1da177e4
LT		 1709 }
1710 vcc = ATM_SKB(skb)->vcc;
1711 if (!vcc) {
1712 printk("tx_dle_intr: vcc is null\n");
1713 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1714 dev_kfree_skb_any(skb);
1715
1716 return;
1717 }
1718 iavcc = INPH_IA_VCC(vcc);
1719 if (!iavcc) {
1720 printk("tx_dle_intr: iavcc is null\n");
1721 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1722 dev_kfree_skb_any(skb);
1723 return;
1724 }
1725 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1726 if ((vcc->pop) && (skb->len != 0))
1727 {
1728 vcc->pop(vcc, skb);
1729 }
1730 else {
1731 dev_kfree_skb_any(skb);
1732 }
1733 }
1734 else { /* Hold the rate-limited skb for flow control */
1735 IA_SKB_STATE(skb) |= IA_DLED;
1736 skb_queue_tail(&iavcc->txing_skb, skb);
1737 }
849e8caa 1738 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n", skb);)
1da177e4
LT		 1739 if (++dle == iadev->tx_dle_q.end)
1740 dle = iadev->tx_dle_q.start;
1741 }
1742 iadev->tx_dle_q.read = dle;
1743 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1744}
1745
1746static int open_tx(struct atm_vcc *vcc)
1747{
1748 struct ia_vcc *ia_vcc;
1749 IADEV *iadev;
1750 struct main_vc *vc;
1751 struct ext_vc *evc;
1752 int ret;
1753 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1754 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1755 iadev = INPH_IA_DEV(vcc->dev);
1756
1757 if (iadev->phy_type & FE_25MBIT_PHY) {
1758 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1759 printk("IA: ABR not support\n");
1760 return -EINVAL;
1761 }
1762 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1763 printk("IA: CBR not support\n");
1764 return -EINVAL;
1765 }
1766 }
1767 ia_vcc = INPH_IA_VCC(vcc);
1768 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1769 if (vcc->qos.txtp.max_sdu >
1770 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1771 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1772 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1773 vcc->dev_data = NULL;
1774 kfree(ia_vcc);
1775 return -EINVAL;
1776 }
1777 ia_vcc->vc_desc_cnt = 0;
1778 ia_vcc->txing = 1;
1779
1780 /* find pcr */
1781 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1782 vcc->qos.txtp.pcr = iadev->LineRate;
1783 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1784 vcc->qos.txtp.pcr = iadev->LineRate;
1785 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1786 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1787 if (vcc->qos.txtp.pcr > iadev->LineRate)
1788 vcc->qos.txtp.pcr = iadev->LineRate;
1789 ia_vcc->pcr = vcc->qos.txtp.pcr;
1790
1791 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1792 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1793 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1794 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1795 if (ia_vcc->pcr < iadev->rate_limit)
1796 skb_queue_head_init (&ia_vcc->txing_skb);
1797 if (ia_vcc->pcr < iadev->rate_limit) {
1798 struct sock *sk = sk_atm(vcc);
1799
1800 if (vcc->qos.txtp.max_sdu != 0) {
1801 if (ia_vcc->pcr > 60000)
1802 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1803 else if (ia_vcc->pcr > 2000)
1804 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1805 else
1806 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1807 }
1808 else
1809 sk->sk_sndbuf = 24576;
1810 }
1811
1812 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1813 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1814 vc += vcc->vci;
1815 evc += vcc->vci;
1816 memset((caddr_t)vc, 0, sizeof(*vc));
1817 memset((caddr_t)evc, 0, sizeof(*evc));
1818
1819 /* store the most significant 4 bits of vci as the last 4 bits
1820 of first part of atm header.
1821 store the last 12 bits of vci as first 12 bits of the second
1822 part of the atm header.
1823 */
1824 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1825 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1826
1827 /* check the following for different traffic classes */
1828 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1829 {
1830 vc->type = UBR;
1831 vc->status = CRC_APPEND;
1832 vc->acr = cellrate_to_float(iadev->LineRate);
1833 if (vcc->qos.txtp.pcr > 0)
1834 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1835 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1836 vcc->qos.txtp.max_pcr,vc->acr);)
1837 }
1838 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1839 { srv_cls_param_t srv_p;
1840 IF_ABR(printk("Tx ABR VCC\n");)
1841 init_abr_vc(iadev, &srv_p);
1842 if (vcc->qos.txtp.pcr > 0)
1843 srv_p.pcr = vcc->qos.txtp.pcr;
1844 if (vcc->qos.txtp.min_pcr > 0) {
1845 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1846 if (tmpsum > iadev->LineRate)
1847 return -EBUSY;
1848 srv_p.mcr = vcc->qos.txtp.min_pcr;
1849 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1850 }
1851 else srv_p.mcr = 0;
1852 if (vcc->qos.txtp.icr)
1853 srv_p.icr = vcc->qos.txtp.icr;
1854 if (vcc->qos.txtp.tbe)
1855 srv_p.tbe = vcc->qos.txtp.tbe;
1856 if (vcc->qos.txtp.frtt)
1857 srv_p.frtt = vcc->qos.txtp.frtt;
1858 if (vcc->qos.txtp.rif)
1859 srv_p.rif = vcc->qos.txtp.rif;
1860 if (vcc->qos.txtp.rdf)
1861 srv_p.rdf = vcc->qos.txtp.rdf;
1862 if (vcc->qos.txtp.nrm_pres)
1863 srv_p.nrm = vcc->qos.txtp.nrm;
1864 if (vcc->qos.txtp.trm_pres)
1865 srv_p.trm = vcc->qos.txtp.trm;
1866 if (vcc->qos.txtp.adtf_pres)
1867 srv_p.adtf = vcc->qos.txtp.adtf;
1868 if (vcc->qos.txtp.cdf_pres)
1869 srv_p.cdf = vcc->qos.txtp.cdf;
1870 if (srv_p.icr > srv_p.pcr)
1871 srv_p.icr = srv_p.pcr;
1872 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1873 srv_p.pcr, srv_p.mcr);)
1874 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1875 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1876 if (iadev->phy_type & FE_25MBIT_PHY) {
1877 printk("IA: CBR not support\n");
1878 return -EINVAL;
1879 }
1880 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
25985edc 1881 IF_CBR(printk("PCR is not available\n");)
1da177e4
LT		 1882 return -1;
1883 }
1884 vc->type = CBR;
1885 vc->status = CRC_APPEND;
1886 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1887 return ret;
1888 }
d560846e
CIK		 1889 } else {
1890 printk("iadev: Non UBR, ABR and CBR traffic not supported\n");
1891 }
1da177e4
LT		 1892
1893 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1894 IF_EVENT(printk("ia open_tx returning \n");)
1895 return 0;
1896}
1897
1898
1899static int tx_init(struct atm_dev *dev)
1900{
1901 IADEV *iadev;
1902 struct tx_buf_desc *buf_desc_ptr;
1903 unsigned int tx_pkt_start;
1904 void *dle_addr;
1905 int i;
1906 u_short tcq_st_adr;
1907 u_short *tcq_start;
1908 u_short prq_st_adr;
1909 u_short *prq_start;
1910 struct main_vc *vc;
1911 struct ext_vc *evc;
1912 u_short tmp16;
1913 u32 vcsize_sel;
1914
1915 iadev = INPH_IA_DEV(dev);
1916 spin_lock_init(&iadev->tx_lock);
1917
1918 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1919 readw(iadev->seg_reg+SEG_MASK_REG));)
1920
1921 /* Allocate 4k (boundary aligned) bytes */
ede58ef2
C		 1922 dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
1923 &iadev->tx_dle_dma, GFP_KERNEL);
1da177e4
LT		 1924 if (!dle_addr) {
1925 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1926 goto err_out;
1927 }
1928 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1929 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1930 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
97928f70 1931 iadev->tx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1da177e4
LT		 1932
1933 /* write the upper 20 bits of the start address to tx list address register */
1934 writel(iadev->tx_dle_dma & 0xfffff000,
1935 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1936 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1937 writew(0, iadev->seg_reg+MODE_REG_0);
1938 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1939 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1940 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1941 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1942
1943 /*
1944 Transmit side control memory map
1945 --------------------------------
1946 Buffer descr 0x0000 (128 - 4K)
1947 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1948 (512 - 1K) each
1949 TCQ - 4K, PRQ - 5K
1950 CBR Table 0x1800 (as needed) - 6K
1951 UBR Table 0x3000 (1K - 4K) - 12K
1952 UBR Wait queue 0x4000 (1K - 4K) - 16K
1953 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1954 ABR Tbl - 20K, ABR Wq - 22K
1955 extended VC 0x6000 (1K - 8K) - 24K
1956 VC Table 0x8000 (1K - 32K) - 32K
1957
1958 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1959 and Wait q, which can be allotted later.
1960 */
1961
1962 /* Buffer Descriptor Table Base address */
1963 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1964
1965 /* initialize each entry in the buffer descriptor table */
1966 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1967 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1968 buf_desc_ptr++;
1969 tx_pkt_start = TX_PACKET_RAM;
1970 for(i=1; i<=iadev->num_tx_desc; i++)
1971 {
1972 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1973 buf_desc_ptr->desc_mode = AAL5;
1974 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1975 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1976 buf_desc_ptr++;
1977 tx_pkt_start += iadev->tx_buf_sz;
1978 }
e808bb6e
ME		 1979 iadev->tx_buf = kmalloc_array(iadev->num_tx_desc,
1980 sizeof(*iadev->tx_buf),
1981 GFP_KERNEL);
1da177e4
LT		 1982 if (!iadev->tx_buf) {
1983 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1984 goto err_free_dle;
1985 }
1986 for (i= 0; i< iadev->num_tx_desc; i++)
1987 {
1988 struct cpcs_trailer *cpcs;
1989
1990 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1991 if(!cpcs) {
1992 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1993 goto err_free_tx_bufs;
1994 }
1995 iadev->tx_buf[i].cpcs = cpcs;
ede58ef2
C		 1996 iadev->tx_buf[i].dma_addr = dma_map_single(&iadev->pci->dev,
1997 cpcs,
1998 sizeof(*cpcs),
1999 DMA_TO_DEVICE);
1da177e4 2000 }
e808bb6e
ME		 2001 iadev->desc_tbl = kmalloc_array(iadev->num_tx_desc,
2002 sizeof(*iadev->desc_tbl),
2003 GFP_KERNEL);
1da177e4
LT		 2004 if (!iadev->desc_tbl) {
2005 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
2006 goto err_free_all_tx_bufs;
2007 }
2008
2009 /* Communication Queues base address */
2010 i = TX_COMP_Q * iadev->memSize;
2011 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
2012
2013 /* Transmit Complete Queue */
2014 writew(i, iadev->seg_reg+TCQ_ST_ADR);
2015 writew(i, iadev->seg_reg+TCQ_RD_PTR);
2016 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
2017 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
2018 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2019 iadev->seg_reg+TCQ_ED_ADR);
2020 /* Fill the TCQ with all the free descriptors. */
2021 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
2022 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
2023 for(i=1; i<=iadev->num_tx_desc; i++)
2024 {
2025 *tcq_start = (u_short)i;
2026 tcq_start++;
2027 }
2028
2029 /* Packet Ready Queue */
2030 i = PKT_RDY_Q * iadev->memSize;
2031 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2032 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2033 iadev->seg_reg+PRQ_ED_ADR);
2034 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2035 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2036
2037 /* Load local copy of PRQ and TCQ ptrs */
2038 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2039 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2040 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2041
2042 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2043 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2044 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2045
2046 /* Just for safety initializing the queue to have desc 1 always */
2047 /* Fill the PRQ with all the free descriptors. */
2048 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2049 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2050 for(i=1; i<=iadev->num_tx_desc; i++)
2051 {
2052 *prq_start = (u_short)0; /* desc 1 in all entries */
2053 prq_start++;
2054 }
2055 /* CBR Table */
2056 IF_INIT(printk("Start CBR Init\n");)
2057#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2058 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2059#else /* Charlie's logic is wrong ? */
2060 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2061 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2062 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2063#endif
2064
2065 IF_INIT(printk("value in register = 0x%x\n",
2066 readw(iadev->seg_reg+CBR_PTR_BASE));)
2067 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2068 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2069 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2070 readw(iadev->seg_reg+CBR_TAB_BEG));)
2071 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2072 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2073 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
849e8caa
DH		 2074 IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n",
2075 iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
1da177e4
LT		 2076 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2077 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2078 readw(iadev->seg_reg+CBR_TAB_END+1));)
2079
2080 /* Initialize the CBR Schedualing Table */
2081 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2082 0, iadev->num_vc*6);
2083 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2084 iadev->CbrEntryPt = 0;
2085 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2086 iadev->NumEnabledCBR = 0;
2087
2088 /* UBR scheduling Table and wait queue */
2089 /* initialize all bytes of UBR scheduler table and wait queue to 0
2090 - SCHEDSZ is 1K (# of entries).
2091 - UBR Table size is 4K
2092 - UBR wait queue is 4K
2093 since the table and wait queues are contiguous, all the bytes
b595076a 2094 can be initialized by one memeset.
1da177e4
LT		 2095 */
2096
2097 vcsize_sel = 0;
2098 i = 8*1024;
2099 while (i != iadev->num_vc) {
2100 i /= 2;
2101 vcsize_sel++;
2102 }
2103
2104 i = MAIN_VC_TABLE * iadev->memSize;
2105 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2106 i = EXT_VC_TABLE * iadev->memSize;
2107 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2108 i = UBR_SCHED_TABLE * iadev->memSize;
2109 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2110 i = UBR_WAIT_Q * iadev->memSize;
2111 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2112 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2113 0, iadev->num_vc*8);
2114 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2115 /* initialize all bytes of ABR scheduler table and wait queue to 0
2116 - SCHEDSZ is 1K (# of entries).
2117 - ABR Table size is 2K
2118 - ABR wait queue is 2K
2119 since the table and wait queues are contiguous, all the bytes
b595076a 2120 can be initialized by one memeset.
1da177e4
LT		 2121 */
2122 i = ABR_SCHED_TABLE * iadev->memSize;
2123 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2124 i = ABR_WAIT_Q * iadev->memSize;
2125 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2126
2127 i = ABR_SCHED_TABLE*iadev->memSize;
2128 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2129 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2130 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
e808bb6e
ME		 2131 iadev->testTable = kmalloc_array(iadev->num_vc,
2132 sizeof(*iadev->testTable),
2133 GFP_KERNEL);
1da177e4
LT		 2134 if (!iadev->testTable) {
2135 printk("Get freepage failed\n");
2136 goto err_free_desc_tbl;
2137 }
2138 for(i=0; i<iadev->num_vc; i++)
2139 {
2140 memset((caddr_t)vc, 0, sizeof(*vc));
2141 memset((caddr_t)evc, 0, sizeof(*evc));
2142 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2143 GFP_KERNEL);
2144 if (!iadev->testTable[i])
2145 goto err_free_test_tables;
2146 iadev->testTable[i]->lastTime = 0;
2147 iadev->testTable[i]->fract = 0;
2148 iadev->testTable[i]->vc_status = VC_UBR;
2149 vc++;
2150 evc++;
2151 }
2152
2153 /* Other Initialization */
2154
2155 /* Max Rate Register */
2156 if (iadev->phy_type & FE_25MBIT_PHY) {
2157 writew(RATE25, iadev->seg_reg+MAXRATE);
2158 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2159 }
2160 else {
2161 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2162 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2163 }
2164 /* Set Idle Header Reigisters to be sure */
2165 writew(0, iadev->seg_reg+IDLEHEADHI);
2166 writew(0, iadev->seg_reg+IDLEHEADLO);
2167
2168 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2169 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2170
2171 iadev->close_pending = 0;
2172 init_waitqueue_head(&iadev->close_wait);
2173 init_waitqueue_head(&iadev->timeout_wait);
2174 skb_queue_head_init(&iadev->tx_dma_q);
2175 ia_init_rtn_q(&iadev->tx_return_q);
2176
2177 /* RM Cell Protocol ID and Message Type */
2178 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2179 skb_queue_head_init (&iadev->tx_backlog);
2180
2181 /* Mode Register 1 */
2182 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2183
2184 /* Mode Register 0 */
2185 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2186
2187 /* Interrupt Status Register - read to clear */
2188 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2189
2190 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2191 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2192 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2193 iadev->tx_pkt_cnt = 0;
2194 iadev->rate_limit = iadev->LineRate / 3;
2195
2196 return 0;
2197
2198err_free_test_tables:
2199 while (--i >= 0)
2200 kfree(iadev->testTable[i]);
2201 kfree(iadev->testTable);
2202err_free_desc_tbl:
2203 kfree(iadev->desc_tbl);
2204err_free_all_tx_bufs:
2205 i = iadev->num_tx_desc;
2206err_free_tx_bufs:
2207 while (--i >= 0) {
2208 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2209
ede58ef2
C		 2210 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2211 sizeof(*desc->cpcs), DMA_TO_DEVICE);
1da177e4
LT		 2212 kfree(desc->cpcs);
2213 }
2214 kfree(iadev->tx_buf);
2215err_free_dle:
ede58ef2
C		 2216 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2217 iadev->tx_dle_dma);
1da177e4
LT		 2218err_out:
2219 return -ENOMEM;
2220}
2221
7d12e780 2222static irqreturn_t ia_int(int irq, void *dev_id)
1da177e4
LT		 2223{
2224 struct atm_dev *dev;
2225 IADEV *iadev;
2226 unsigned int status;
2227 int handled = 0;
2228
2229 dev = dev_id;
2230 iadev = INPH_IA_DEV(dev);
2231 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2232 {
2233 handled = 1;
2234 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2235 if (status & STAT_REASSINT)
2236 {
2237 /* do something */
2238 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2239 rx_intr(dev);
2240 }
2241 if (status & STAT_DLERINT)
2242 {
2243 /* Clear this bit by writing a 1 to it. */
26c5c44d 2244 writel(STAT_DLERINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
1da177e4
LT		 2245 rx_dle_intr(dev);
2246 }
2247 if (status & STAT_SEGINT)
2248 {
2249 /* do something */
2250 IF_EVENT(printk("IA: tx_intr \n");)
2251 tx_intr(dev);
2252 }
2253 if (status & STAT_DLETINT)
2254 {
26c5c44d 2255 writel(STAT_DLETINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
1da177e4
LT		 2256 tx_dle_intr(dev);
2257 }
2258 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2259 {
2260 if (status & STAT_FEINT)
26c5c44d 2261 ia_frontend_intr(iadev);
1da177e4
LT		 2262 }
2263 }
2264 return IRQ_RETVAL(handled);
2265}
2266
2267
2268
2269/*----------------------------- entries --------------------------------*/
2270static int get_esi(struct atm_dev *dev)
2271{
2272 IADEV *iadev;
2273 int i;
2274 u32 mac1;
2275 u16 mac2;
2276
2277 iadev = INPH_IA_DEV(dev);
2278 mac1 = cpu_to_be32(le32_to_cpu(readl(
2279 iadev->reg+IPHASE5575_MAC1)));
2280 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2281 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2282 for (i=0; i<MAC1_LEN; i++)
2283 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2284
2285 for (i=0; i<MAC2_LEN; i++)
2286 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2287 return 0;
2288}
2289
2290static int reset_sar(struct atm_dev *dev)
2291{
2292 IADEV *iadev;
2293 int i, error = 1;
2294 unsigned int pci[64];
2295
2296 iadev = INPH_IA_DEV(dev);
2297 for(i=0; i<64; i++)
2298 if ((error = pci_read_config_dword(iadev->pci,
2299 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2300 return error;
2301 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2302 for(i=0; i<64; i++)
2303 if ((error = pci_write_config_dword(iadev->pci,
2304 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2305 return error;
2306 udelay(5);
2307 return 0;
2308}
2309
2310
6c44512d 2311static int ia_init(struct atm_dev *dev)
1da177e4
LT		 2312{
2313 IADEV *iadev;
2314 unsigned long real_base;
2315 void __iomem *base;
2316 unsigned short command;
1da177e4
LT		 2317 int error, i;
2318
2319 /* The device has been identified and registered. Now we read
2320 necessary configuration info like memory base address,
2321 interrupt number etc */
2322
2323 IF_INIT(printk(">ia_init\n");)
2324 dev->ci_range.vpi_bits = 0;
2325 dev->ci_range.vci_bits = NR_VCI_LD;
2326
2327 iadev = INPH_IA_DEV(dev);
2328 real_base = pci_resource_start (iadev->pci, 0);
2329 iadev->irq = iadev->pci->irq;
2330
44c10138
AK		 2331 error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2332 if (error) {
1da177e4
LT		 2333 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2334 dev->number,error);
2335 return -EINVAL;
2336 }
2337 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
44c10138 2338 dev->number, iadev->pci->revision, real_base, iadev->irq);)
1da177e4
LT		 2339
2340 /* find mapping size of board */
2341
2342 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2343
2344 if (iadev->pci_map_size == 0x100000){
2345 iadev->num_vc = 4096;
2346 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2347 iadev->memSize = 4;
2348 }
2349 else if (iadev->pci_map_size == 0x40000) {
2350 iadev->num_vc = 1024;
2351 iadev->memSize = 1;
2352 }
2353 else {
2354 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2355 return -EINVAL;
2356 }
2357 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2358
2359 /* enable bus mastering */
2360 pci_set_master(iadev->pci);
2361
2362 /*
2363 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2364 */
2365 udelay(10);
2366
2367 /* mapping the physical address to a virtual address in address space */
2368 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2369
2370 if (!base)
2371 {
2372 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2373 dev->number);
f716168b 2374 return -ENOMEM;
1da177e4
LT		 2375 }
2376 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
44c10138 2377 dev->number, iadev->pci->revision, base, iadev->irq);)
1da177e4
LT		 2378
2379 /* filling the iphase dev structure */
2380 iadev->mem = iadev->pci_map_size /2;
2381 iadev->real_base = real_base;
2382 iadev->base = base;
2383
2384 /* Bus Interface Control Registers */
2385 iadev->reg = base + REG_BASE;
2386 /* Segmentation Control Registers */
2387 iadev->seg_reg = base + SEG_BASE;
2388 /* Reassembly Control Registers */
2389 iadev->reass_reg = base + REASS_BASE;
2390 /* Front end/ DMA control registers */
2391 iadev->phy = base + PHY_BASE;
2392 iadev->dma = base + PHY_BASE;
2393 /* RAM - Segmentation RAm and Reassembly RAM */
2394 iadev->ram = base + ACTUAL_RAM_BASE;
2395 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2396 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2397
2398 /* lets print out the above */
2399 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2400 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2401 iadev->phy, iadev->ram, iadev->seg_ram,
2402 iadev->reass_ram);)
2403
2404 /* lets try reading the MAC address */
2405 error = get_esi(dev);
2406 if (error) {
2407 iounmap(iadev->base);
2408 return error;
2409 }
2410 printk("IA: ");
2411 for (i=0; i < ESI_LEN; i++)
2412 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2413 printk("\n");
2414
2415 /* reset SAR */
2416 if (reset_sar(dev)) {
2417 iounmap(iadev->base);
2418 printk("IA: reset SAR fail, please try again\n");
2419 return 1;
2420 }
2421 return 0;
2422}
2423
2424static void ia_update_stats(IADEV *iadev) {
2425 if (!iadev->carrier_detect)
2426 return;
2427 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2428 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2429 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2430 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2431 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2432 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2433 return;
2434}
2435
24ed960a 2436static void ia_led_timer(struct timer_list *unused) {
1da177e4
LT		 2437 unsigned long flags;
2438 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2439 u_char i;
2440 static u32 ctrl_reg;
2441 for (i = 0; i < iadev_count; i++) {
2442 if (ia_dev[i]) {
2443 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2444 if (blinking[i] == 0) {
2445 blinking[i]++;
2446 ctrl_reg &= (~CTRL_LED);
2447 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2448 ia_update_stats(ia_dev[i]);
2449 }
2450 else {
2451 blinking[i] = 0;
2452 ctrl_reg |= CTRL_LED;
2453 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2454 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2455 if (ia_dev[i]->close_pending)
2456 wake_up(&ia_dev[i]->close_wait);
2457 ia_tx_poll(ia_dev[i]);
2458 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2459 }
2460 }
2461 }
2462 mod_timer(&ia_timer, jiffies + HZ / 4);
2463 return;
2464}
2465
2466static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2467 unsigned long addr)
2468{
2469 writel(value, INPH_IA_DEV(dev)->phy+addr);
2470}
2471
2472static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2473{
2474 return readl(INPH_IA_DEV(dev)->phy+addr);
2475}
2476
2477static void ia_free_tx(IADEV *iadev)
2478{
2479 int i;
2480
2481 kfree(iadev->desc_tbl);
2482 for (i = 0; i < iadev->num_vc; i++)
2483 kfree(iadev->testTable[i]);
2484 kfree(iadev->testTable);
2485 for (i = 0; i < iadev->num_tx_desc; i++) {
2486 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2487
ede58ef2
C		 2488 dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
2489 sizeof(*desc->cpcs), DMA_TO_DEVICE);
1da177e4
LT		 2490 kfree(desc->cpcs);
2491 }
2492 kfree(iadev->tx_buf);
ede58ef2
C		 2493 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2494 iadev->tx_dle_dma);
1da177e4
LT		 2495}
2496
2497static void ia_free_rx(IADEV *iadev)
2498{
2499 kfree(iadev->rx_open);
ede58ef2
C		 2500 dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2501 iadev->rx_dle_dma);
1da177e4
LT		 2502}
2503
6c44512d 2504static int ia_start(struct atm_dev *dev)
1da177e4
LT		 2505{
2506 IADEV *iadev;
2507 int error;
2508 unsigned char phy;
2509 u32 ctrl_reg;
2510 IF_EVENT(printk(">ia_start\n");)
2511 iadev = INPH_IA_DEV(dev);
dace1453 2512 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
1da177e4
LT		 2513 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2514 dev->number, iadev->irq);
2515 error = -EAGAIN;
2516 goto err_out;
2517 }
2518 /* @@@ should release IRQ on error */
2519 /* enabling memory + master */
2520 if ((error = pci_write_config_word(iadev->pci,
2521 PCI_COMMAND,
2522 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2523 {
2524 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2525 "master (0x%x)\n",dev->number, error);
2526 error = -EIO;
2527 goto err_free_irq;
2528 }
2529 udelay(10);
2530
2531 /* Maybe we should reset the front end, initialize Bus Interface Control
2532 Registers and see. */
2533
2534 IF_INIT(printk("Bus ctrl reg: %08x\n",
2535 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2536 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2537 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2538 | CTRL_B8
2539 | CTRL_B16
2540 | CTRL_B32
2541 | CTRL_B48
2542 | CTRL_B64
2543 | CTRL_B128
2544 | CTRL_ERRMASK
2545 | CTRL_DLETMASK /* shud be removed l8r */
2546 | CTRL_DLERMASK
2547 | CTRL_SEGMASK
2548 | CTRL_REASSMASK
2549 | CTRL_FEMASK
2550 | CTRL_CSPREEMPT;
2551
2552 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2553
2554 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2555 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2556 printk("Bus status reg after init: %08x\n",
2557 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2558
2559 ia_hw_type(iadev);
2560 error = tx_init(dev);
2561 if (error)
2562 goto err_free_irq;
2563 error = rx_init(dev);
2564 if (error)
2565 goto err_free_tx;
2566
2567 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2568 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2569 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2570 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2571 phy = 0; /* resolve compiler complaint */
2572 IF_INIT (
2573 if ((phy=ia_phy_get(dev,0)) == 0x30)
2574 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2575 else
2576 printk("IA: utopia,rev.%0x\n",phy);)
2577
2578 if (iadev->phy_type & FE_25MBIT_PHY)
2579 ia_mb25_init(iadev);
2580 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2581 ia_suni_pm7345_init(iadev);
2582 else {
2583 error = suni_init(dev);
2584 if (error)
2585 goto err_free_rx;
d6c1d704
JBD		 2586 if (dev->phy->start) {
2587 error = dev->phy->start(dev);
2588 if (error)
2589 goto err_free_rx;
2590 }
1da177e4 2591 /* Get iadev->carrier_detect status */
26c5c44d 2592 ia_frontend_intr(iadev);
1da177e4
LT		 2593 }
2594 return 0;
2595
2596err_free_rx:
2597 ia_free_rx(iadev);
2598err_free_tx:
2599 ia_free_tx(iadev);
2600err_free_irq:
2601 free_irq(iadev->irq, dev);
2602err_out:
2603 return error;
2604}
2605
2606static void ia_close(struct atm_vcc *vcc)
2607{
2608 DEFINE_WAIT(wait);
2609 u16 *vc_table;
2610 IADEV *iadev;
2611 struct ia_vcc *ia_vcc;
2612 struct sk_buff *skb = NULL;
2613 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2614 unsigned long closetime, flags;
2615
2616 iadev = INPH_IA_DEV(vcc->dev);
2617 ia_vcc = INPH_IA_VCC(vcc);
2618 if (!ia_vcc) return;
2619
2620 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2621 ia_vcc->vc_desc_cnt,vcc->vci);)
2622 clear_bit(ATM_VF_READY,&vcc->flags);
2623 skb_queue_head_init (&tmp_tx_backlog);
2624 skb_queue_head_init (&tmp_vcc_backlog);
2625 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2626 iadev->close_pending++;
2627 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
684b4ac1 2628 schedule_timeout(msecs_to_jiffies(500));
1da177e4
LT		 2629 finish_wait(&iadev->timeout_wait, &wait);
2630 spin_lock_irqsave(&iadev->tx_lock, flags);
2631 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2632 if (ATM_SKB(skb)->vcc == vcc){
2633 if (vcc->pop) vcc->pop(vcc, skb);
2634 else dev_kfree_skb_any(skb);
2635 }
2636 else
2637 skb_queue_tail(&tmp_tx_backlog, skb);
2638 }
2639 while((skb = skb_dequeue(&tmp_tx_backlog)))
2640 skb_queue_tail(&iadev->tx_backlog, skb);
2641 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2642 closetime = 300000 / ia_vcc->pcr;
2643 if (closetime == 0)
2644 closetime = 1;
2645 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2646 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2647 spin_lock_irqsave(&iadev->tx_lock, flags);
2648 iadev->close_pending--;
2649 iadev->testTable[vcc->vci]->lastTime = 0;
2650 iadev->testTable[vcc->vci]->fract = 0;
2651 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2652 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2653 if (vcc->qos.txtp.min_pcr > 0)
2654 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2655 }
2656 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2657 ia_vcc = INPH_IA_VCC(vcc);
2658 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2659 ia_cbrVc_close (vcc);
2660 }
2661 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2662 }
2663
2664 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2665 // reset reass table
2666 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2667 vc_table += vcc->vci;
2668 *vc_table = NO_AAL5_PKT;
2669 // reset vc table
2670 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2671 vc_table += vcc->vci;
2672 *vc_table = (vcc->vci << 6) | 15;
2673 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2674 struct abr_vc_table __iomem *abr_vc_table =
2675 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2676 abr_vc_table += vcc->vci;
2677 abr_vc_table->rdf = 0x0003;
2678 abr_vc_table->air = 0x5eb1;
2679 }
2680 // Drain the packets
2681 rx_dle_intr(vcc->dev);
2682 iadev->rx_open[vcc->vci] = NULL;
2683 }
2684 kfree(INPH_IA_VCC(vcc));
2685 ia_vcc = NULL;
2686 vcc->dev_data = NULL;
2687 clear_bit(ATM_VF_ADDR,&vcc->flags);
2688 return;
2689}
2690
2691static int ia_open(struct atm_vcc *vcc)
2692{
1da177e4
LT		 2693 struct ia_vcc *ia_vcc;
2694 int error;
2695 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2696 {
2697 IF_EVENT(printk("ia: not partially allocated resources\n");)
2698 vcc->dev_data = NULL;
2699 }
1da177e4
LT		 2700 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2701 {
2702 IF_EVENT(printk("iphase open: unspec part\n");)
2703 set_bit(ATM_VF_ADDR,&vcc->flags);
2704 }
2705 if (vcc->qos.aal != ATM_AAL5)
2706 return -EINVAL;
2707 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2708 vcc->dev->number, vcc->vpi, vcc->vci);)
2709
2710 /* Device dependent initialization */
2711 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2712 if (!ia_vcc) return -ENOMEM;
2713 vcc->dev_data = ia_vcc;
2714
2715 if ((error = open_rx(vcc)))
2716 {
2717 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2718 ia_close(vcc);
2719 return error;
2720 }
2721
2722 if ((error = open_tx(vcc)))
2723 {
2724 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2725 ia_close(vcc);
2726 return error;
2727 }
2728
2729 set_bit(ATM_VF_READY,&vcc->flags);
2730
2731#if 0
2732 {
2733 static u8 first = 1;
2734 if (first) {
2735 ia_timer.expires = jiffies + 3*HZ;
2736 add_timer(&ia_timer);
2737 first = 0;
2738 }
2739 }
2740#endif
2741 IF_EVENT(printk("ia open returning\n");)
2742 return 0;
2743}
2744
2745static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2746{
2747 IF_EVENT(printk(">ia_change_qos\n");)
2748 return 0;
2749}
2750
2751static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2752{
2753 IA_CMDBUF ia_cmds;
2754 IADEV *iadev;
2755 int i, board;
2756 u16 __user *tmps;
2757 IF_EVENT(printk(">ia_ioctl\n");)
2758 if (cmd != IA_CMD) {
2759 if (!dev->phy->ioctl) return -EINVAL;
2760 return dev->phy->ioctl(dev,cmd,arg);
2761 }
2762 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2763 board = ia_cmds.status;
ea443e5e
GS		 2764
2765 if ((board < 0) || (board > iadev_count))
2766 board = 0;
2767 board = array_index_nospec(board, iadev_count + 1);
2768
1da177e4
LT		 2769 iadev = ia_dev[board];
2770 switch (ia_cmds.cmd) {
2771 case MEMDUMP:
2772 {
2773 switch (ia_cmds.sub_cmd) {
1da177e4
LT		 2774 case MEMDUMP_SEGREG:
2775 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2776 tmps = (u16 __user *)ia_cmds.buf;
2777 for(i=0; i<0x80; i+=2, tmps++)
2778 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2779 ia_cmds.status = 0;
2780 ia_cmds.len = 0x80;
2781 break;
2782 case MEMDUMP_REASSREG:
2783 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2784 tmps = (u16 __user *)ia_cmds.buf;
2785 for(i=0; i<0x80; i+=2, tmps++)
2786 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2787 ia_cmds.status = 0;
2788 ia_cmds.len = 0x80;
2789 break;
2790 case MEMDUMP_FFL:
2791 {
2792 ia_regs_t *regs_local;
2793 ffredn_t *ffL;
2794 rfredn_t *rfL;
2795
2796 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2797 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2798 if (!regs_local) return -ENOMEM;
2799 ffL = &regs_local->ffredn;
2800 rfL = &regs_local->rfredn;
2801 /* Copy real rfred registers into the local copy */
2802 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2803 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2804 /* Copy real ffred registers into the local copy */
2805 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2806 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2807
2808 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2809 kfree(regs_local);
2810 return -EFAULT;
2811 }
2812 kfree(regs_local);
2813 printk("Board %d registers dumped\n", board);
2814 ia_cmds.status = 0;
2815 }
2816 break;
2817 case READ_REG:
2818 {
2819 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2820 desc_dbg(iadev);
2821 ia_cmds.status = 0;
2822 }
2823 break;
2824 case 0x6:
2825 {
2826 ia_cmds.status = 0;
05453ead
FH		 2827 printk("skb = 0x%p\n", skb_peek(&iadev->tx_backlog));
2828 printk("rtn_q: 0x%p\n",ia_deque_rtn_q(&iadev->tx_return_q));
1da177e4
LT		 2829 }
2830 break;
2831 case 0x8:
2832 {
2833 struct k_sonet_stats *stats;
2834 stats = &PRIV(_ia_dev[board])->sonet_stats;
2835 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2836 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2837 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2838 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2839 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2840 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2841 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2842 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2843 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2844 }
2845 ia_cmds.status = 0;
2846 break;
2847 case 0x9:
2848 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2849 for (i = 1; i <= iadev->num_rx_desc; i++)
2850 free_desc(_ia_dev[board], i);
2851 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2852 iadev->reass_reg+REASS_MASK_REG);
2853 iadev->rxing = 1;
2854
2855 ia_cmds.status = 0;
2856 break;
2857
2858 case 0xb:
2859 if (!capable(CAP_NET_ADMIN)) return -EPERM;
26c5c44d 2860 ia_frontend_intr(iadev);
1da177e4
LT		 2861 break;
2862 case 0xa:
2863 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2864 {
2865 ia_cmds.status = 0;
2866 IADebugFlag = ia_cmds.maddr;
2867 printk("New debug option loaded\n");
2868 }
2869 break;
2870 default:
2871 ia_cmds.status = 0;
2872 break;
2873 }
2874 }
2875 break;
2876 default:
2877 break;
2878
2879 }
2880 return 0;
2881}
2882
2883static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2884 void __user *optval, int optlen)
2885{
2886 IF_EVENT(printk(">ia_getsockopt\n");)
2887 return -EINVAL;
2888}
2889
2890static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
b7058842 2891 void __user *optval, unsigned int optlen)
1da177e4
LT		 2892{
2893 IF_EVENT(printk(">ia_setsockopt\n");)
2894 return -EINVAL;
2895}
2896
2897static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2898 IADEV *iadev;
2899 struct dle *wr_ptr;
2900 struct tx_buf_desc __iomem *buf_desc_ptr;
2901 int desc;
2902 int comp_code;
2903 int total_len;
2904 struct cpcs_trailer *trailer;
2905 struct ia_vcc *iavcc;
2906
2907 iadev = INPH_IA_DEV(vcc->dev);
2908 iavcc = INPH_IA_VCC(vcc);
2909 if (!iavcc->txing) {
2910 printk("discard packet on closed VC\n");
2911 if (vcc->pop)
2912 vcc->pop(vcc, skb);
2913 else
2914 dev_kfree_skb_any(skb);
2915 return 0;
2916 }
2917
2918 if (skb->len > iadev->tx_buf_sz - 8) {
2919 printk("Transmit size over tx buffer size\n");
2920 if (vcc->pop)
2921 vcc->pop(vcc, skb);
2922 else
2923 dev_kfree_skb_any(skb);
2924 return 0;
2925 }
97928f70 2926 if ((unsigned long)skb->data & 3) {
1da177e4
LT		 2927 printk("Misaligned SKB\n");
2928 if (vcc->pop)
2929 vcc->pop(vcc, skb);
2930 else
2931 dev_kfree_skb_any(skb);
2932 return 0;
2933 }
2934 /* Get a descriptor number from our free descriptor queue
2935 We get the descr number from the TCQ now, since I am using
2936 the TCQ as a free buffer queue. Initially TCQ will be
2937 initialized with all the descriptors and is hence, full.
2938 */
2939 desc = get_desc (iadev, iavcc);
2940 if (desc == 0xffff)
2941 return 1;
2942 comp_code = desc >> 13;
2943 desc &= 0x1fff;
2944
2945 if ((desc == 0) || (desc > iadev->num_tx_desc))
2946 {
2947 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2948 atomic_inc(&vcc->stats->tx);
2949 if (vcc->pop)
2950 vcc->pop(vcc, skb);
2951 else
2952 dev_kfree_skb_any(skb);
2953 return 0; /* return SUCCESS */
2954 }
2955
2956 if (comp_code)
2957 {
2958 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2959 desc, comp_code);)
2960 }
2961
2962 /* remember the desc and vcc mapping */
2963 iavcc->vc_desc_cnt++;
2964 iadev->desc_tbl[desc-1].iavcc = iavcc;
2965 iadev->desc_tbl[desc-1].txskb = skb;
2966 IA_SKB_STATE(skb) = 0;
2967
2968 iadev->ffL.tcq_rd += 2;
2969 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2970 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2971 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2972
2973 /* Put the descriptor number in the packet ready queue
2974 and put the updated write pointer in the DLE field
2975 */
2976 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2977
2978 iadev->ffL.prq_wr += 2;
2979 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2980 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2981
2982 /* Figure out the exact length of the packet and padding required to
2983 make it aligned on a 48 byte boundary. */
2984 total_len = skb->len + sizeof(struct cpcs_trailer);
2985 total_len = ((total_len + 47) / 48) * 48;
2986 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2987
2988 /* Put the packet in a tx buffer */
2989 trailer = iadev->tx_buf[desc-1].cpcs;
849e8caa
DH		 2990 IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n",
2991 skb, skb->data, skb->len, desc);)
1da177e4
LT		 2992 trailer->control = 0;
2993 /*big endian*/
2994 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2995 trailer->crc32 = 0; /* not needed - dummy bytes */
2996
2997 /* Display the packet */
2998 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2999 skb->len, tcnter++);
3000 xdump(skb->data, skb->len, "TX: ");
3001 printk("\n");)
3002
3003 /* Build the buffer descriptor */
3004 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
3005 buf_desc_ptr += desc; /* points to the corresponding entry */
3006 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
3007 /* Huh ? p.115 of users guide describes this as a read-only register */
3008 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
3009 buf_desc_ptr->vc_index = vcc->vci;
3010 buf_desc_ptr->bytes = total_len;
3011
3012 if (vcc->qos.txtp.traffic_class == ATM_ABR)
3013 clear_lockup (vcc, iadev);
3014
3015 /* Build the DLE structure */
3016 wr_ptr = iadev->tx_dle_q.write;
3017 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
ede58ef2
C		 3018 wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
3019 skb->len, DMA_TO_DEVICE);
1da177e4
LT		 3020 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
3021 buf_desc_ptr->buf_start_lo;
b67445fc 3022 /* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
1da177e4
LT		 3023 wr_ptr->bytes = skb->len;
3024
3025 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3026 if ((wr_ptr->bytes >> 2) == 0xb)
3027 wr_ptr->bytes = 0x30;
3028
3029 wr_ptr->mode = TX_DLE_PSI;
3030 wr_ptr->prq_wr_ptr_data = 0;
3031
3032 /* end is not to be used for the DLE q */
3033 if (++wr_ptr == iadev->tx_dle_q.end)
3034 wr_ptr = iadev->tx_dle_q.start;
3035
3036 /* Build trailer dle */
3037 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3038 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3039 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3040
3041 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3042 wr_ptr->mode = DMA_INT_ENABLE;
3043 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3044
3045 /* end is not to be used for the DLE q */
3046 if (++wr_ptr == iadev->tx_dle_q.end)
3047 wr_ptr = iadev->tx_dle_q.start;
3048
3049 iadev->tx_dle_q.write = wr_ptr;
3050 ATM_DESC(skb) = vcc->vci;
3051 skb_queue_tail(&iadev->tx_dma_q, skb);
3052
3053 atomic_inc(&vcc->stats->tx);
3054 iadev->tx_pkt_cnt++;
3055 /* Increment transaction counter */
3056 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3057
3058#if 0
3059 /* add flow control logic */
3060 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3061 if (iavcc->vc_desc_cnt > 10) {
3062 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3063 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3064 iavcc->flow_inc = -1;
3065 iavcc->saved_tx_quota = vcc->tx_quota;
3066 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3067 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3068 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3069 iavcc->flow_inc = 0;
3070 }
3071 }
3072#endif
3073 IF_TX(printk("ia send done\n");)
3074 return 0;
3075}
3076
3077static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3078{
3079 IADEV *iadev;
1da177e4
LT		 3080 unsigned long flags;
3081
3082 iadev = INPH_IA_DEV(vcc->dev);
1da177e4
LT		 3083 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3084 {
3085 if (!skb)
3086 printk(KERN_CRIT "null skb in ia_send\n");
3087 else dev_kfree_skb_any(skb);
3088 return -EINVAL;
3089 }
3090 spin_lock_irqsave(&iadev->tx_lock, flags);
3091 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3092 dev_kfree_skb_any(skb);
3093 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3094 return -EINVAL;
3095 }
3096 ATM_SKB(skb)->vcc = vcc;
3097
3098 if (skb_peek(&iadev->tx_backlog)) {
3099 skb_queue_tail(&iadev->tx_backlog, skb);
3100 }
3101 else {
3102 if (ia_pkt_tx (vcc, skb)) {
3103 skb_queue_tail(&iadev->tx_backlog, skb);
3104 }
3105 }
3106 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3107 return 0;
3108
3109}
3110
3111static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3112{
3113 int left = *pos, n;
3114 char *tmpPtr;
3115 IADEV *iadev = INPH_IA_DEV(dev);
3116 if(!left--) {
3117 if (iadev->phy_type == FE_25MBIT_PHY) {
3118 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3119 return n;
3120 }
3121 if (iadev->phy_type == FE_DS3_PHY)
3122 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3123 else if (iadev->phy_type == FE_E3_PHY)
3124 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3125 else if (iadev->phy_type == FE_UTP_OPTION)
3126 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3127 else
3128 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3129 tmpPtr = page + n;
3130 if (iadev->pci_map_size == 0x40000)
3131 n += sprintf(tmpPtr, "-1KVC-");
3132 else
3133 n += sprintf(tmpPtr, "-4KVC-");
3134 tmpPtr = page + n;
3135 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3136 n += sprintf(tmpPtr, "1M \n");
3137 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3138 n += sprintf(tmpPtr, "512K\n");
3139 else
3140 n += sprintf(tmpPtr, "128K\n");
3141 return n;
3142 }
3143 if (!left) {
3144 return sprintf(page, " Number of Tx Buffer: %u\n"
3145 " Size of Tx Buffer : %u\n"
3146 " Number of Rx Buffer: %u\n"
3147 " Size of Rx Buffer : %u\n"
a9645b27 3148 " Packets Received : %u\n"
1da177e4
LT		 3149 " Packets Transmitted: %u\n"
3150 " Cells Received : %u\n"
3151 " Cells Transmitted : %u\n"
3152 " Board Dropped Cells: %u\n"
3153 " Board Dropped Pkts : %u\n",
3154 iadev->num_tx_desc, iadev->tx_buf_sz,
3155 iadev->num_rx_desc, iadev->rx_buf_sz,
3156 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3157 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3158 iadev->drop_rxcell, iadev->drop_rxpkt);
3159 }
3160 return 0;
3161}
3162
3163static const struct atmdev_ops ops = {
3164 .open = ia_open,
3165 .close = ia_close,
3166 .ioctl = ia_ioctl,
3167 .getsockopt = ia_getsockopt,
3168 .setsockopt = ia_setsockopt,
3169 .send = ia_send,
3170 .phy_put = ia_phy_put,
3171 .phy_get = ia_phy_get,
3172 .change_qos = ia_change_qos,
3173 .proc_read = ia_proc_read,
3174 .owner = THIS_MODULE,
3175};
3176
6c44512d 3177static int ia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1da177e4
LT		 3178{
3179 struct atm_dev *dev;
3180 IADEV *iadev;
1da177e4
LT		 3181 int ret;
3182
f7141761 3183 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
1da177e4
LT		 3184 if (!iadev) {
3185 ret = -ENOMEM;
3186 goto err_out;
3187 }
f7141761 3188
1da177e4
LT		 3189 iadev->pci = pdev;
3190
3191 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3192 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3193 if (pci_enable_device(pdev)) {
3194 ret = -ENODEV;
3195 goto err_out_free_iadev;
3196 }
d9ca676b 3197 dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1, NULL);
1da177e4
LT		 3198 if (!dev) {
3199 ret = -ENOMEM;
3200 goto err_out_disable_dev;
3201 }
3202 dev->dev_data = iadev;
3203 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
849e8caa 3204 IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n", dev,
1da177e4
LT		 3205 iadev->LineRate);)
3206
c0ed0b60
JBD		 3207 pci_set_drvdata(pdev, dev);
3208
1da177e4
LT		 3209 ia_dev[iadev_count] = iadev;
3210 _ia_dev[iadev_count] = dev;
3211 iadev_count++;
1da177e4
LT		 3212 if (ia_init(dev) || ia_start(dev)) {
3213 IF_INIT(printk("IA register failed!\n");)
3214 iadev_count--;
3215 ia_dev[iadev_count] = NULL;
3216 _ia_dev[iadev_count] = NULL;
1da177e4
LT		 3217 ret = -EINVAL;
3218 goto err_out_deregister_dev;
3219 }
1da177e4
LT		 3220 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3221
3222 iadev->next_board = ia_boards;
3223 ia_boards = dev;
3224
1da177e4
LT		 3225 return 0;
3226
3227err_out_deregister_dev:
3228 atm_dev_deregister(dev);
3229err_out_disable_dev:
3230 pci_disable_device(pdev);
3231err_out_free_iadev:
3232 kfree(iadev);
3233err_out:
3234 return ret;
3235}
3236
6c44512d 3237static void ia_remove_one(struct pci_dev *pdev)
1da177e4
LT		 3238{
3239 struct atm_dev *dev = pci_get_drvdata(pdev);
3240 IADEV *iadev = INPH_IA_DEV(dev);
3241
d6c1d704
JBD		 3242 /* Disable phy interrupts */
3243 ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
3244 SUNI_RSOP_CIE);
1da177e4
LT		 3245 udelay(1);
3246
d6c1d704
JBD		 3247 if (dev->phy && dev->phy->stop)
3248 dev->phy->stop(dev);
3249
1da177e4
LT		 3250 /* De-register device */
3251 free_irq(iadev->irq, dev);
3252 iadev_count--;
3253 ia_dev[iadev_count] = NULL;
3254 _ia_dev[iadev_count] = NULL;
3255 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3256 atm_dev_deregister(dev);
3257
3258 iounmap(iadev->base);
3259 pci_disable_device(pdev);
3260
3261 ia_free_rx(iadev);
3262 ia_free_tx(iadev);
3263
3264 kfree(iadev);
3265}
3266
10244bc2 3267static const struct pci_device_id ia_pci_tbl[] = {
1da177e4
LT		 3268 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3269 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3270 { 0,}
3271};
3272MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3273
3274static struct pci_driver ia_driver = {
3275 .name = DEV_LABEL,
3276 .id_table = ia_pci_tbl,
3277 .probe = ia_init_one,
6c44512d 3278 .remove = ia_remove_one,
1da177e4
LT		 3279};
3280
3281static int __init ia_module_init(void)
3282{
3283 int ret;
3284
3285 ret = pci_register_driver(&ia_driver);
3286 if (ret >= 0) {
3287 ia_timer.expires = jiffies + 3*HZ;
3288 add_timer(&ia_timer);
3289 } else
3290 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3291 return ret;
3292}
3293
3294static void __exit ia_module_exit(void)
3295{
3296 pci_unregister_driver(&ia_driver);
3297
3298 del_timer(&ia_timer);
3299}
3300
3301module_init(ia_module_init);
3302module_exit(ia_module_exit);
Linux 6.x block layer and io_uring tree(s)