ia64/linux-2.6.18-xen.hg

view drivers/atm/iphase.c @ 897:329ea0ccb344

balloon: try harder to balloon up under memory pressure.

Currently if the balloon driver is unable to increase the guest's
reservation it assumes the failure was due to reaching its full
allocation, gives up on the ballooning operation and records the limit
it reached as the "hard limit". The driver will not try again until
the target is set again (even to the same value).

However it is possible that ballooning has in fact failed due to
memory pressure in the host and therefore it is desirable to keep
attempting to reach the target in case memory becomes available. The
most likely scenario is that some guests are ballooning down while
others are ballooning up and therefore there is temporary memory
pressure while things stabilise. You would not expect a well behaved
toolstack to ask a domain to balloon to more than its allocation nor
would you expect it to deliberately over-commit memory by setting
balloon targets which exceed the total host memory.

This patch drops the concept of a hard limit and causes the balloon
driver to retry increasing the reservation on a timer in the same
manner as when decreasing the reservation.

Also if we partially succeed in increasing the reservation
(i.e. receive less pages than we asked for) then we may as well keep
those pages rather than returning them to Xen.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Fri Jun 05 14:01:20 2009 +0100 (2009-06-05)
parents 831230e53067
children
line source
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 *******************************************************************************
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.
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.
19 Modified from an incomplete driver for Interphase 5575 1KVC 1M card which
20 was originally written by Monalisa Agrawal at UNH. Now this driver
21 supports a variety of varients of Interphase ATM PCI (i)Chip adapter
22 card family (See www.iphase.com/products/ClassSheet.cfm?ClassID=ATM)
23 in terms of PHY type, the size of control memory and the size of
24 packet memory. The followings are the change log and history:
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.
39 Support and updates available at: ftp://ftp.iphase.com/pub/atm
41 *******************************************************************************/
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/mm.h>
46 #include <linux/pci.h>
47 #include <linux/errno.h>
48 #include <linux/atm.h>
49 #include <linux/atmdev.h>
50 #include <linux/sonet.h>
51 #include <linux/skbuff.h>
52 #include <linux/time.h>
53 #include <linux/delay.h>
54 #include <linux/uio.h>
55 #include <linux/init.h>
56 #include <linux/wait.h>
57 #include <asm/system.h>
58 #include <asm/io.h>
59 #include <asm/atomic.h>
60 #include <asm/uaccess.h>
61 #include <asm/string.h>
62 #include <asm/byteorder.h>
63 #include <linux/vmalloc.h>
64 #include "iphase.h"
65 #include "suni.h"
66 #define swap(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
67 struct suni_priv {
68 struct k_sonet_stats sonet_stats; /* link diagnostics */
69 unsigned char loop_mode; /* loopback mode */
70 struct atm_dev *dev; /* device back-pointer */
71 struct suni_priv *next; /* next SUNI */
72 };
73 #define PRIV(dev) ((struct suni_priv *) dev->phy_data)
75 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
76 static void desc_dbg(IADEV *iadev);
78 static IADEV *ia_dev[8];
79 static struct atm_dev *_ia_dev[8];
80 static int iadev_count;
81 static void ia_led_timer(unsigned long arg);
82 static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
83 static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
84 static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
85 static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
86 |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
88 module_param(IA_TX_BUF, int, 0);
89 module_param(IA_TX_BUF_SZ, int, 0);
90 module_param(IA_RX_BUF, int, 0);
91 module_param(IA_RX_BUF_SZ, int, 0);
92 module_param(IADebugFlag, uint, 0644);
94 MODULE_LICENSE("GPL");
96 #if BITS_PER_LONG != 32
97 # error FIXME: this driver only works on 32-bit platforms
98 #endif
100 /**************************** IA_LIB **********************************/
102 static void ia_init_rtn_q (IARTN_Q *que)
103 {
104 que->next = NULL;
105 que->tail = NULL;
106 }
108 static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
109 {
110 data->next = NULL;
111 if (que->next == NULL)
112 que->next = que->tail = data;
113 else {
114 data->next = que->next;
115 que->next = data;
116 }
117 return;
118 }
120 static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
121 IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
122 if (!entry) return -1;
123 entry->data = data;
124 entry->next = NULL;
125 if (que->next == NULL)
126 que->next = que->tail = entry;
127 else {
128 que->tail->next = entry;
129 que->tail = que->tail->next;
130 }
131 return 1;
132 }
134 static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
135 IARTN_Q *tmpdata;
136 if (que->next == NULL)
137 return NULL;
138 tmpdata = que->next;
139 if ( que->next == que->tail)
140 que->next = que->tail = NULL;
141 else
142 que->next = que->next->next;
143 return tmpdata;
144 }
146 static void ia_hack_tcq(IADEV *dev) {
148 u_short desc1;
149 u_short tcq_wr;
150 struct ia_vcc *iavcc_r = NULL;
152 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
153 while (dev->host_tcq_wr != tcq_wr) {
154 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
155 if (!desc1) ;
156 else if (!dev->desc_tbl[desc1 -1].timestamp) {
157 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
158 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
159 }
160 else if (dev->desc_tbl[desc1 -1].timestamp) {
161 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
162 printk("IA: Fatal err in get_desc\n");
163 continue;
164 }
165 iavcc_r->vc_desc_cnt--;
166 dev->desc_tbl[desc1 -1].timestamp = 0;
167 IF_EVENT(printk("ia_hack: return_q skb = 0x%x desc = %d\n",
168 (u32)dev->desc_tbl[desc1 -1].txskb, desc1);)
169 if (iavcc_r->pcr < dev->rate_limit) {
170 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
171 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
172 printk("ia_hack_tcq: No memory available\n");
173 }
174 dev->desc_tbl[desc1 -1].iavcc = NULL;
175 dev->desc_tbl[desc1 -1].txskb = NULL;
176 }
177 dev->host_tcq_wr += 2;
178 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
179 dev->host_tcq_wr = dev->ffL.tcq_st;
180 }
181 } /* ia_hack_tcq */
183 static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
184 u_short desc_num, i;
185 struct sk_buff *skb;
186 struct ia_vcc *iavcc_r = NULL;
187 unsigned long delta;
188 static unsigned long timer = 0;
189 int ltimeout;
191 ia_hack_tcq (dev);
192 if(((jiffies - timer)>50)||((dev->ffL.tcq_rd==dev->host_tcq_wr))){
193 timer = jiffies;
194 i=0;
195 while (i < dev->num_tx_desc) {
196 if (!dev->desc_tbl[i].timestamp) {
197 i++;
198 continue;
199 }
200 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
201 delta = jiffies - dev->desc_tbl[i].timestamp;
202 if (delta >= ltimeout) {
203 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
204 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
205 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
206 else
207 dev->ffL.tcq_rd -= 2;
208 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
209 if (!(skb = dev->desc_tbl[i].txskb) ||
210 !(iavcc_r = dev->desc_tbl[i].iavcc))
211 printk("Fatal err, desc table vcc or skb is NULL\n");
212 else
213 iavcc_r->vc_desc_cnt--;
214 dev->desc_tbl[i].timestamp = 0;
215 dev->desc_tbl[i].iavcc = NULL;
216 dev->desc_tbl[i].txskb = NULL;
217 }
218 i++;
219 } /* while */
220 }
221 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
222 return 0xFFFF;
224 /* Get the next available descriptor number from TCQ */
225 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
227 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
228 dev->ffL.tcq_rd += 2;
229 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
230 dev->ffL.tcq_rd = dev->ffL.tcq_st;
231 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
232 return 0xFFFF;
233 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
234 }
236 /* get system time */
237 dev->desc_tbl[desc_num -1].timestamp = jiffies;
238 return desc_num;
239 }
241 static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
242 u_char foundLockUp;
243 vcstatus_t *vcstatus;
244 u_short *shd_tbl;
245 u_short tempCellSlot, tempFract;
246 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
247 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
248 u_int i;
250 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
251 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
252 vcstatus->cnt++;
253 foundLockUp = 0;
254 if( vcstatus->cnt == 0x05 ) {
255 abr_vc += vcc->vci;
256 eabr_vc += vcc->vci;
257 if( eabr_vc->last_desc ) {
258 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
259 /* Wait for 10 Micro sec */
260 udelay(10);
261 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
262 foundLockUp = 1;
263 }
264 else {
265 tempCellSlot = abr_vc->last_cell_slot;
266 tempFract = abr_vc->fraction;
267 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
268 && (tempFract == dev->testTable[vcc->vci]->fract))
269 foundLockUp = 1;
270 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
271 dev->testTable[vcc->vci]->fract = tempFract;
272 }
273 } /* last descriptor */
274 vcstatus->cnt = 0;
275 } /* vcstatus->cnt */
277 if (foundLockUp) {
278 IF_ABR(printk("LOCK UP found\n");)
279 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
280 /* Wait for 10 Micro sec */
281 udelay(10);
282 abr_vc->status &= 0xFFF8;
283 abr_vc->status |= 0x0001; /* state is idle */
284 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
285 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
286 if (i < dev->num_vc)
287 shd_tbl[i] = vcc->vci;
288 else
289 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
290 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
291 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
292 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
293 vcstatus->cnt = 0;
294 } /* foundLockUp */
296 } /* if an ABR VC */
299 }
301 /*
302 ** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
303 **
304 ** +----+----+------------------+-------------------------------+
305 ** | R | NZ | 5-bit exponent | 9-bit mantissa |
306 ** +----+----+------------------+-------------------------------+
307 **
308 ** R = reserverd (written as 0)
309 ** NZ = 0 if 0 cells/sec; 1 otherwise
310 **
311 ** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
312 */
313 static u16
314 cellrate_to_float(u32 cr)
315 {
317 #define NZ 0x4000
318 #define M_BITS 9 /* Number of bits in mantissa */
319 #define E_BITS 5 /* Number of bits in exponent */
320 #define M_MASK 0x1ff
321 #define E_MASK 0x1f
322 u16 flot;
323 u32 tmp = cr & 0x00ffffff;
324 int i = 0;
325 if (cr == 0)
326 return 0;
327 while (tmp != 1) {
328 tmp >>= 1;
329 i++;
330 }
331 if (i == M_BITS)
332 flot = NZ | (i << M_BITS) | (cr & M_MASK);
333 else if (i < M_BITS)
334 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
335 else
336 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
337 return flot;
338 }
340 #if 0
341 /*
342 ** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
343 */
344 static u32
345 float_to_cellrate(u16 rate)
346 {
347 u32 exp, mantissa, cps;
348 if ((rate & NZ) == 0)
349 return 0;
350 exp = (rate >> M_BITS) & E_MASK;
351 mantissa = rate & M_MASK;
352 if (exp == 0)
353 return 1;
354 cps = (1 << M_BITS) | mantissa;
355 if (exp == M_BITS)
356 cps = cps;
357 else if (exp > M_BITS)
358 cps <<= (exp - M_BITS);
359 else
360 cps >>= (M_BITS - exp);
361 return cps;
362 }
363 #endif
365 static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
366 srv_p->class_type = ATM_ABR;
367 srv_p->pcr = dev->LineRate;
368 srv_p->mcr = 0;
369 srv_p->icr = 0x055cb7;
370 srv_p->tbe = 0xffffff;
371 srv_p->frtt = 0x3a;
372 srv_p->rif = 0xf;
373 srv_p->rdf = 0xb;
374 srv_p->nrm = 0x4;
375 srv_p->trm = 0x7;
376 srv_p->cdf = 0x3;
377 srv_p->adtf = 50;
378 }
380 static int
381 ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
382 struct atm_vcc *vcc, u8 flag)
383 {
384 f_vc_abr_entry *f_abr_vc;
385 r_vc_abr_entry *r_abr_vc;
386 u32 icr;
387 u8 trm, nrm, crm;
388 u16 adtf, air, *ptr16;
389 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
390 f_abr_vc += vcc->vci;
391 switch (flag) {
392 case 1: /* FFRED initialization */
393 #if 0 /* sanity check */
394 if (srv_p->pcr == 0)
395 return INVALID_PCR;
396 if (srv_p->pcr > dev->LineRate)
397 srv_p->pcr = dev->LineRate;
398 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
399 return MCR_UNAVAILABLE;
400 if (srv_p->mcr > srv_p->pcr)
401 return INVALID_MCR;
402 if (!(srv_p->icr))
403 srv_p->icr = srv_p->pcr;
404 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
405 return INVALID_ICR;
406 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
407 return INVALID_TBE;
408 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
409 return INVALID_FRTT;
410 if (srv_p->nrm > MAX_NRM)
411 return INVALID_NRM;
412 if (srv_p->trm > MAX_TRM)
413 return INVALID_TRM;
414 if (srv_p->adtf > MAX_ADTF)
415 return INVALID_ADTF;
416 else if (srv_p->adtf == 0)
417 srv_p->adtf = 1;
418 if (srv_p->cdf > MAX_CDF)
419 return INVALID_CDF;
420 if (srv_p->rif > MAX_RIF)
421 return INVALID_RIF;
422 if (srv_p->rdf > MAX_RDF)
423 return INVALID_RDF;
424 #endif
425 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
426 f_abr_vc->f_vc_type = ABR;
427 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
428 /* i.e 2**n = 2 << (n-1) */
429 f_abr_vc->f_nrm = nrm << 8 | nrm;
430 trm = 100000/(2 << (16 - srv_p->trm));
431 if ( trm == 0) trm = 1;
432 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
433 crm = srv_p->tbe / nrm;
434 if (crm == 0) crm = 1;
435 f_abr_vc->f_crm = crm & 0xff;
436 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
437 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
438 ((srv_p->tbe/srv_p->frtt)*1000000) :
439 (1000000/(srv_p->frtt/srv_p->tbe)));
440 f_abr_vc->f_icr = cellrate_to_float(icr);
441 adtf = (10000 * srv_p->adtf)/8192;
442 if (adtf == 0) adtf = 1;
443 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
444 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
445 f_abr_vc->f_acr = f_abr_vc->f_icr;
446 f_abr_vc->f_status = 0x0042;
447 break;
448 case 0: /* RFRED initialization */
449 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
450 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
451 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
452 r_abr_vc += vcc->vci;
453 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
454 air = srv_p->pcr << (15 - srv_p->rif);
455 if (air == 0) air = 1;
456 r_abr_vc->r_air = cellrate_to_float(air);
457 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
458 dev->sum_mcr += srv_p->mcr;
459 dev->n_abr++;
460 break;
461 default:
462 break;
463 }
464 return 0;
465 }
466 static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
467 u32 rateLow=0, rateHigh, rate;
468 int entries;
469 struct ia_vcc *ia_vcc;
471 int idealSlot =0, testSlot, toBeAssigned, inc;
472 u32 spacing;
473 u16 *SchedTbl, *TstSchedTbl;
474 u16 cbrVC, vcIndex;
475 u32 fracSlot = 0;
476 u32 sp_mod = 0;
477 u32 sp_mod2 = 0;
479 /* IpAdjustTrafficParams */
480 if (vcc->qos.txtp.max_pcr <= 0) {
481 IF_ERR(printk("PCR for CBR not defined\n");)
482 return -1;
483 }
484 rate = vcc->qos.txtp.max_pcr;
485 entries = rate / dev->Granularity;
486 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
487 entries, rate, dev->Granularity);)
488 if (entries < 1)
489 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
490 rateLow = entries * dev->Granularity;
491 rateHigh = (entries + 1) * dev->Granularity;
492 if (3*(rate - rateLow) > (rateHigh - rate))
493 entries++;
494 if (entries > dev->CbrRemEntries) {
495 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
496 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
497 entries, dev->CbrRemEntries);)
498 return -EBUSY;
499 }
501 ia_vcc = INPH_IA_VCC(vcc);
502 ia_vcc->NumCbrEntry = entries;
503 dev->sum_mcr += entries * dev->Granularity;
504 /* IaFFrednInsertCbrSched */
505 // Starting at an arbitrary location, place the entries into the table
506 // as smoothly as possible
507 cbrVC = 0;
508 spacing = dev->CbrTotEntries / entries;
509 sp_mod = dev->CbrTotEntries % entries; // get modulo
510 toBeAssigned = entries;
511 fracSlot = 0;
512 vcIndex = vcc->vci;
513 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
514 while (toBeAssigned)
515 {
516 // If this is the first time, start the table loading for this connection
517 // as close to entryPoint as possible.
518 if (toBeAssigned == entries)
519 {
520 idealSlot = dev->CbrEntryPt;
521 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
522 if (dev->CbrEntryPt >= dev->CbrTotEntries)
523 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
524 } else {
525 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
526 // in the table that would be smoothest
527 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
528 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
529 }
530 if (idealSlot >= (int)dev->CbrTotEntries)
531 idealSlot -= dev->CbrTotEntries;
532 // Continuously check around this ideal value until a null
533 // location is encountered.
534 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
535 inc = 0;
536 testSlot = idealSlot;
537 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
538 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%x, NumToAssign=%d\n",
539 testSlot, (u32)TstSchedTbl,toBeAssigned);)
540 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
541 while (cbrVC) // If another VC at this location, we have to keep looking
542 {
543 inc++;
544 testSlot = idealSlot - inc;
545 if (testSlot < 0) { // Wrap if necessary
546 testSlot += dev->CbrTotEntries;
547 IF_CBR(printk("Testslot Wrap. STable Start=0x%x,Testslot=%d\n",
548 (u32)SchedTbl,testSlot);)
549 }
550 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
551 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
552 if (!cbrVC)
553 break;
554 testSlot = idealSlot + inc;
555 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
556 testSlot -= dev->CbrTotEntries;
557 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
558 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
559 testSlot, toBeAssigned);)
560 }
561 // set table index and read in value
562 TstSchedTbl = (u16*)(SchedTbl + testSlot);
563 IF_CBR(printk("Reading CBR Tbl from 0x%x, CbrVal=0x%x Iteration %d\n",
564 (u32)TstSchedTbl,cbrVC,inc);)
565 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
566 } /* while */
567 // Move this VCI number into this location of the CBR Sched table.
568 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex,sizeof(TstSchedTbl));
569 dev->CbrRemEntries--;
570 toBeAssigned--;
571 } /* while */
573 /* IaFFrednCbrEnable */
574 dev->NumEnabledCBR++;
575 if (dev->NumEnabledCBR == 1) {
576 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
577 IF_CBR(printk("CBR is enabled\n");)
578 }
579 return 0;
580 }
581 static void ia_cbrVc_close (struct atm_vcc *vcc) {
582 IADEV *iadev;
583 u16 *SchedTbl, NullVci = 0;
584 u32 i, NumFound;
586 iadev = INPH_IA_DEV(vcc->dev);
587 iadev->NumEnabledCBR--;
588 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
589 if (iadev->NumEnabledCBR == 0) {
590 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
591 IF_CBR (printk("CBR support disabled\n");)
592 }
593 NumFound = 0;
594 for (i=0; i < iadev->CbrTotEntries; i++)
595 {
596 if (*SchedTbl == vcc->vci) {
597 iadev->CbrRemEntries++;
598 *SchedTbl = NullVci;
599 IF_CBR(NumFound++;)
600 }
601 SchedTbl++;
602 }
603 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
604 }
606 static int ia_avail_descs(IADEV *iadev) {
607 int tmp = 0;
608 ia_hack_tcq(iadev);
609 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
610 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
611 else
612 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
613 iadev->ffL.tcq_st) / 2;
614 return tmp;
615 }
617 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
619 static int ia_que_tx (IADEV *iadev) {
620 struct sk_buff *skb;
621 int num_desc;
622 struct atm_vcc *vcc;
623 struct ia_vcc *iavcc;
624 num_desc = ia_avail_descs(iadev);
626 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
627 if (!(vcc = ATM_SKB(skb)->vcc)) {
628 dev_kfree_skb_any(skb);
629 printk("ia_que_tx: Null vcc\n");
630 break;
631 }
632 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
633 dev_kfree_skb_any(skb);
634 printk("Free the SKB on closed vci %d \n", vcc->vci);
635 break;
636 }
637 iavcc = INPH_IA_VCC(vcc);
638 if (ia_pkt_tx (vcc, skb)) {
639 skb_queue_head(&iadev->tx_backlog, skb);
640 }
641 num_desc--;
642 }
643 return 0;
644 }
646 static void ia_tx_poll (IADEV *iadev) {
647 struct atm_vcc *vcc = NULL;
648 struct sk_buff *skb = NULL, *skb1 = NULL;
649 struct ia_vcc *iavcc;
650 IARTN_Q * rtne;
652 ia_hack_tcq(iadev);
653 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
654 skb = rtne->data.txskb;
655 if (!skb) {
656 printk("ia_tx_poll: skb is null\n");
657 goto out;
658 }
659 vcc = ATM_SKB(skb)->vcc;
660 if (!vcc) {
661 printk("ia_tx_poll: vcc is null\n");
662 dev_kfree_skb_any(skb);
663 goto out;
664 }
666 iavcc = INPH_IA_VCC(vcc);
667 if (!iavcc) {
668 printk("ia_tx_poll: iavcc is null\n");
669 dev_kfree_skb_any(skb);
670 goto out;
671 }
673 skb1 = skb_dequeue(&iavcc->txing_skb);
674 while (skb1 && (skb1 != skb)) {
675 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
676 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
677 }
678 IF_ERR(printk("Release the SKB not match\n");)
679 if ((vcc->pop) && (skb1->len != 0))
680 {
681 vcc->pop(vcc, skb1);
682 IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
683 (long)skb1);)
684 }
685 else
686 dev_kfree_skb_any(skb1);
687 skb1 = skb_dequeue(&iavcc->txing_skb);
688 }
689 if (!skb1) {
690 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
691 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
692 break;
693 }
694 if ((vcc->pop) && (skb->len != 0))
695 {
696 vcc->pop(vcc, skb);
697 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
698 }
699 else
700 dev_kfree_skb_any(skb);
701 kfree(rtne);
702 }
703 ia_que_tx(iadev);
704 out:
705 return;
706 }
707 #if 0
708 static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
709 {
710 u32 t;
711 int i;
712 /*
713 * Issue a command to enable writes to the NOVRAM
714 */
715 NVRAM_CMD (EXTEND + EWEN);
716 NVRAM_CLR_CE;
717 /*
718 * issue the write command
719 */
720 NVRAM_CMD(IAWRITE + addr);
721 /*
722 * Send the data, starting with D15, then D14, and so on for 16 bits
723 */
724 for (i=15; i>=0; i--) {
725 NVRAM_CLKOUT (val & 0x8000);
726 val <<= 1;
727 }
728 NVRAM_CLR_CE;
729 CFG_OR(NVCE);
730 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
731 while (!(t & NVDO))
732 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
734 NVRAM_CLR_CE;
735 /*
736 * disable writes again
737 */
738 NVRAM_CMD(EXTEND + EWDS)
739 NVRAM_CLR_CE;
740 CFG_AND(~NVDI);
741 }
742 #endif
744 static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
745 {
746 u_short val;
747 u32 t;
748 int i;
749 /*
750 * Read the first bit that was clocked with the falling edge of the
751 * the last command data clock
752 */
753 NVRAM_CMD(IAREAD + addr);
754 /*
755 * Now read the rest of the bits, the next bit read is D14, then D13,
756 * and so on.
757 */
758 val = 0;
759 for (i=15; i>=0; i--) {
760 NVRAM_CLKIN(t);
761 val |= (t << i);
762 }
763 NVRAM_CLR_CE;
764 CFG_AND(~NVDI);
765 return val;
766 }
768 static void ia_hw_type(IADEV *iadev) {
769 u_short memType = ia_eeprom_get(iadev, 25);
770 iadev->memType = memType;
771 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
772 iadev->num_tx_desc = IA_TX_BUF;
773 iadev->tx_buf_sz = IA_TX_BUF_SZ;
774 iadev->num_rx_desc = IA_RX_BUF;
775 iadev->rx_buf_sz = IA_RX_BUF_SZ;
776 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
777 if (IA_TX_BUF == DFL_TX_BUFFERS)
778 iadev->num_tx_desc = IA_TX_BUF / 2;
779 else
780 iadev->num_tx_desc = IA_TX_BUF;
781 iadev->tx_buf_sz = IA_TX_BUF_SZ;
782 if (IA_RX_BUF == DFL_RX_BUFFERS)
783 iadev->num_rx_desc = IA_RX_BUF / 2;
784 else
785 iadev->num_rx_desc = IA_RX_BUF;
786 iadev->rx_buf_sz = IA_RX_BUF_SZ;
787 }
788 else {
789 if (IA_TX_BUF == DFL_TX_BUFFERS)
790 iadev->num_tx_desc = IA_TX_BUF / 8;
791 else
792 iadev->num_tx_desc = IA_TX_BUF;
793 iadev->tx_buf_sz = IA_TX_BUF_SZ;
794 if (IA_RX_BUF == DFL_RX_BUFFERS)
795 iadev->num_rx_desc = IA_RX_BUF / 8;
796 else
797 iadev->num_rx_desc = IA_RX_BUF;
798 iadev->rx_buf_sz = IA_RX_BUF_SZ;
799 }
800 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
801 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
802 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
803 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
805 #if 0
806 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
807 iadev->phy_type = PHY_OC3C_S;
808 else if ((memType & FE_MASK) == FE_UTP_OPTION)
809 iadev->phy_type = PHY_UTP155;
810 else
811 iadev->phy_type = PHY_OC3C_M;
812 #endif
814 iadev->phy_type = memType & FE_MASK;
815 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
816 memType,iadev->phy_type);)
817 if (iadev->phy_type == FE_25MBIT_PHY)
818 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
819 else if (iadev->phy_type == FE_DS3_PHY)
820 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
821 else if (iadev->phy_type == FE_E3_PHY)
822 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
823 else
824 iadev->LineRate = (u32)(ATM_OC3_PCR);
825 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
827 }
829 static void IaFrontEndIntr(IADEV *iadev) {
830 volatile IA_SUNI *suni;
831 volatile ia_mb25_t *mb25;
832 volatile suni_pm7345_t *suni_pm7345;
833 u32 intr_status;
834 u_int frmr_intr;
836 if(iadev->phy_type & FE_25MBIT_PHY) {
837 mb25 = (ia_mb25_t*)iadev->phy;
838 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
839 } else if (iadev->phy_type & FE_DS3_PHY) {
840 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
841 /* clear FRMR interrupts */
842 frmr_intr = suni_pm7345->suni_ds3_frm_intr_stat;
843 iadev->carrier_detect =
844 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
845 } else if (iadev->phy_type & FE_E3_PHY ) {
846 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
847 frmr_intr = suni_pm7345->suni_e3_frm_maint_intr_ind;
848 iadev->carrier_detect =
849 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
850 }
851 else {
852 suni = (IA_SUNI *)iadev->phy;
853 intr_status = suni->suni_rsop_status & 0xff;
854 iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
855 }
856 if (iadev->carrier_detect)
857 printk("IA: SUNI carrier detected\n");
858 else
859 printk("IA: SUNI carrier lost signal\n");
860 return;
861 }
863 static void ia_mb25_init (IADEV *iadev)
864 {
865 volatile ia_mb25_t *mb25 = (ia_mb25_t*)iadev->phy;
866 #if 0
867 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
868 #endif
869 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
870 mb25->mb25_diag_control = 0;
871 /*
872 * Initialize carrier detect state
873 */
874 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
875 return;
876 }
878 static void ia_suni_pm7345_init (IADEV *iadev)
879 {
880 volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
881 if (iadev->phy_type & FE_DS3_PHY)
882 {
883 iadev->carrier_detect =
884 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
885 suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
886 suni_pm7345->suni_ds3_frm_cfg = 1;
887 suni_pm7345->suni_ds3_tran_cfg = 1;
888 suni_pm7345->suni_config = 0;
889 suni_pm7345->suni_splr_cfg = 0;
890 suni_pm7345->suni_splt_cfg = 0;
891 }
892 else
893 {
894 iadev->carrier_detect =
895 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
896 suni_pm7345->suni_e3_frm_fram_options = 0x4;
897 suni_pm7345->suni_e3_frm_maint_options = 0x20;
898 suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
899 suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
900 suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
901 suni_pm7345->suni_e3_tran_fram_options = 0x1;
902 suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
903 suni_pm7345->suni_splr_cfg = 0x41;
904 suni_pm7345->suni_splt_cfg = 0x41;
905 }
906 /*
907 * Enable RSOP loss of signal interrupt.
908 */
909 suni_pm7345->suni_intr_enbl = 0x28;
911 /*
912 * Clear error counters
913 */
914 suni_pm7345->suni_id_reset = 0;
916 /*
917 * Clear "PMCTST" in master test register.
918 */
919 suni_pm7345->suni_master_test = 0;
921 suni_pm7345->suni_rxcp_ctrl = 0x2c;
922 suni_pm7345->suni_rxcp_fctrl = 0x81;
924 suni_pm7345->suni_rxcp_idle_pat_h1 =
925 suni_pm7345->suni_rxcp_idle_pat_h2 =
926 suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
927 suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
929 suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
930 suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
931 suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
932 suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
934 suni_pm7345->suni_rxcp_cell_pat_h1 =
935 suni_pm7345->suni_rxcp_cell_pat_h2 =
936 suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
937 suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
939 suni_pm7345->suni_rxcp_cell_mask_h1 =
940 suni_pm7345->suni_rxcp_cell_mask_h2 =
941 suni_pm7345->suni_rxcp_cell_mask_h3 =
942 suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
944 suni_pm7345->suni_txcp_ctrl = 0xa4;
945 suni_pm7345->suni_txcp_intr_en_sts = 0x10;
946 suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
948 suni_pm7345->suni_config &= ~(SUNI_PM7345_LLB |
949 SUNI_PM7345_CLB |
950 SUNI_PM7345_DLB |
951 SUNI_PM7345_PLB);
952 #ifdef __SNMP__
953 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
954 #endif /* __SNMP__ */
955 return;
956 }
959 /***************************** IA_LIB END *****************************/
961 static int tcnter = 0;
962 static void xdump( u_char* cp, int length, char* prefix )
963 {
964 int col, count;
965 u_char prntBuf[120];
966 u_char* pBuf = prntBuf;
967 count = 0;
968 while(count < length){
969 pBuf += sprintf( pBuf, "%s", prefix );
970 for(col = 0;count + col < length && col < 16; col++){
971 if (col != 0 && (col % 4) == 0)
972 pBuf += sprintf( pBuf, " " );
973 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
974 }
975 while(col++ < 16){ /* pad end of buffer with blanks */
976 if ((col % 4) == 0)
977 sprintf( pBuf, " " );
978 pBuf += sprintf( pBuf, " " );
979 }
980 pBuf += sprintf( pBuf, " " );
981 for(col = 0;count + col < length && col < 16; col++){
982 if (isprint((int)cp[count + col]))
983 pBuf += sprintf( pBuf, "%c", cp[count + col] );
984 else
985 pBuf += sprintf( pBuf, "." );
986 }
987 sprintf( pBuf, "\n" );
988 // SPrint(prntBuf);
989 printk(prntBuf);
990 count += col;
991 pBuf = prntBuf;
992 }
994 } /* close xdump(... */
997 static struct atm_dev *ia_boards = NULL;
999 #define ACTUAL_RAM_BASE \
1000 RAM_BASE*((iadev->mem)/(128 * 1024))
1001 #define ACTUAL_SEG_RAM_BASE \
1002 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1003 #define ACTUAL_REASS_RAM_BASE \
1004 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1007 /*-- some utilities and memory allocation stuff will come here -------------*/
1009 static void desc_dbg(IADEV *iadev) {
1011 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1012 u32 i;
1013 void __iomem *tmp;
1014 // regval = readl((u32)ia_cmds->maddr);
1015 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1016 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1017 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1018 readw(iadev->seg_ram+tcq_wr_ptr-2));
1019 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1020 iadev->ffL.tcq_rd);
1021 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1022 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1023 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1024 i = 0;
1025 while (tcq_st_ptr != tcq_ed_ptr) {
1026 tmp = iadev->seg_ram+tcq_st_ptr;
1027 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1028 tcq_st_ptr += 2;
1030 for(i=0; i <iadev->num_tx_desc; i++)
1031 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1035 /*----------------------------- Recieving side stuff --------------------------*/
1037 static void rx_excp_rcvd(struct atm_dev *dev)
1039 #if 0 /* closing the receiving size will cause too many excp int */
1040 IADEV *iadev;
1041 u_short state;
1042 u_short excpq_rd_ptr;
1043 //u_short *ptr;
1044 int vci, error = 1;
1045 iadev = INPH_IA_DEV(dev);
1046 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1047 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1048 { printk("state = %x \n", state);
1049 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1050 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1051 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1052 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1053 // TODO: update exception stat
1054 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1055 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1056 // pwang_test
1057 excpq_rd_ptr += 4;
1058 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1059 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1060 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1061 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1063 #endif
1066 static void free_desc(struct atm_dev *dev, int desc)
1068 IADEV *iadev;
1069 iadev = INPH_IA_DEV(dev);
1070 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1071 iadev->rfL.fdq_wr +=2;
1072 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1073 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1074 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1078 static int rx_pkt(struct atm_dev *dev)
1080 IADEV *iadev;
1081 struct atm_vcc *vcc;
1082 unsigned short status;
1083 struct rx_buf_desc __iomem *buf_desc_ptr;
1084 int desc;
1085 struct dle* wr_ptr;
1086 int len;
1087 struct sk_buff *skb;
1088 u_int buf_addr, dma_addr;
1090 iadev = INPH_IA_DEV(dev);
1091 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1093 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1094 return -EINVAL;
1096 /* mask 1st 3 bits to get the actual descno. */
1097 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1098 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1099 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1100 printk(" pcq_wr_ptr = 0x%x\n",
1101 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1102 /* update the read pointer - maybe we shud do this in the end*/
1103 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1104 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1105 else
1106 iadev->rfL.pcq_rd += 2;
1107 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1109 /* get the buffer desc entry.
1110 update stuff. - doesn't seem to be any update necessary
1111 */
1112 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1113 /* make the ptr point to the corresponding buffer desc entry */
1114 buf_desc_ptr += desc;
1115 if (!desc || (desc > iadev->num_rx_desc) ||
1116 ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1117 free_desc(dev, desc);
1118 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1119 return -1;
1121 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1122 if (!vcc)
1124 free_desc(dev, desc);
1125 printk("IA: null vcc, drop PDU\n");
1126 return -1;
1130 /* might want to check the status bits for errors */
1131 status = (u_short) (buf_desc_ptr->desc_mode);
1132 if (status & (RX_CER | RX_PTE | RX_OFL))
1134 atomic_inc(&vcc->stats->rx_err);
1135 IF_ERR(printk("IA: bad packet, dropping it");)
1136 if (status & RX_CER) {
1137 IF_ERR(printk(" cause: packet CRC error\n");)
1139 else if (status & RX_PTE) {
1140 IF_ERR(printk(" cause: packet time out\n");)
1142 else {
1143 IF_ERR(printk(" cause: buffer over flow\n");)
1145 goto out_free_desc;
1148 /*
1149 build DLE.
1150 */
1152 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1153 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1154 len = dma_addr - buf_addr;
1155 if (len > iadev->rx_buf_sz) {
1156 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1157 atomic_inc(&vcc->stats->rx_err);
1158 goto out_free_desc;
1161 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1162 if (vcc->vci < 32)
1163 printk("Drop control packets\n");
1164 goto out_free_desc;
1166 skb_put(skb,len);
1167 // pwang_test
1168 ATM_SKB(skb)->vcc = vcc;
1169 ATM_DESC(skb) = desc;
1170 skb_queue_tail(&iadev->rx_dma_q, skb);
1172 /* Build the DLE structure */
1173 wr_ptr = iadev->rx_dle_q.write;
1174 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
1175 len, PCI_DMA_FROMDEVICE);
1176 wr_ptr->local_pkt_addr = buf_addr;
1177 wr_ptr->bytes = len; /* We don't know this do we ?? */
1178 wr_ptr->mode = DMA_INT_ENABLE;
1180 /* shud take care of wrap around here too. */
1181 if(++wr_ptr == iadev->rx_dle_q.end)
1182 wr_ptr = iadev->rx_dle_q.start;
1183 iadev->rx_dle_q.write = wr_ptr;
1184 udelay(1);
1185 /* Increment transaction counter */
1186 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1187 out: return 0;
1188 out_free_desc:
1189 free_desc(dev, desc);
1190 goto out;
1193 static void rx_intr(struct atm_dev *dev)
1195 IADEV *iadev;
1196 u_short status;
1197 u_short state, i;
1199 iadev = INPH_IA_DEV(dev);
1200 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1201 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1202 if (status & RX_PKT_RCVD)
1204 /* do something */
1205 /* Basically recvd an interrupt for receving a packet.
1206 A descriptor would have been written to the packet complete
1207 queue. Get all the descriptors and set up dma to move the
1208 packets till the packet complete queue is empty..
1209 */
1210 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1211 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1212 while(!(state & PCQ_EMPTY))
1214 rx_pkt(dev);
1215 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1217 iadev->rxing = 1;
1219 if (status & RX_FREEQ_EMPT)
1221 if (iadev->rxing) {
1222 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1223 iadev->rx_tmp_jif = jiffies;
1224 iadev->rxing = 0;
1226 else if (((jiffies - iadev->rx_tmp_jif) > 50) &&
1227 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1228 for (i = 1; i <= iadev->num_rx_desc; i++)
1229 free_desc(dev, i);
1230 printk("Test logic RUN!!!!\n");
1231 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1232 iadev->rxing = 1;
1234 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1237 if (status & RX_EXCP_RCVD)
1239 /* probably need to handle the exception queue also. */
1240 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1241 rx_excp_rcvd(dev);
1245 if (status & RX_RAW_RCVD)
1247 /* need to handle the raw incoming cells. This deepnds on
1248 whether we have programmed to receive the raw cells or not.
1249 Else ignore. */
1250 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1255 static void rx_dle_intr(struct atm_dev *dev)
1257 IADEV *iadev;
1258 struct atm_vcc *vcc;
1259 struct sk_buff *skb;
1260 int desc;
1261 u_short state;
1262 struct dle *dle, *cur_dle;
1263 u_int dle_lp;
1264 int len;
1265 iadev = INPH_IA_DEV(dev);
1267 /* free all the dles done, that is just update our own dle read pointer
1268 - do we really need to do this. Think not. */
1269 /* DMA is done, just get all the recevie buffers from the rx dma queue
1270 and push them up to the higher layer protocol. Also free the desc
1271 associated with the buffer. */
1272 dle = iadev->rx_dle_q.read;
1273 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1274 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1275 while(dle != cur_dle)
1277 /* free the DMAed skb */
1278 skb = skb_dequeue(&iadev->rx_dma_q);
1279 if (!skb)
1280 goto INCR_DLE;
1281 desc = ATM_DESC(skb);
1282 free_desc(dev, desc);
1284 if (!(len = skb->len))
1286 printk("rx_dle_intr: skb len 0\n");
1287 dev_kfree_skb_any(skb);
1289 else
1291 struct cpcs_trailer *trailer;
1292 u_short length;
1293 struct ia_vcc *ia_vcc;
1295 pci_unmap_single(iadev->pci, iadev->rx_dle_q.write->sys_pkt_addr,
1296 len, PCI_DMA_FROMDEVICE);
1297 /* no VCC related housekeeping done as yet. lets see */
1298 vcc = ATM_SKB(skb)->vcc;
1299 if (!vcc) {
1300 printk("IA: null vcc\n");
1301 dev_kfree_skb_any(skb);
1302 goto INCR_DLE;
1304 ia_vcc = INPH_IA_VCC(vcc);
1305 if (ia_vcc == NULL)
1307 atomic_inc(&vcc->stats->rx_err);
1308 dev_kfree_skb_any(skb);
1309 atm_return(vcc, atm_guess_pdu2truesize(len));
1310 goto INCR_DLE;
1312 // get real pkt length pwang_test
1313 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1314 skb->len - sizeof(*trailer));
1315 length = swap(trailer->length);
1316 if ((length > iadev->rx_buf_sz) || (length >
1317 (skb->len - sizeof(struct cpcs_trailer))))
1319 atomic_inc(&vcc->stats->rx_err);
1320 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1321 length, skb->len);)
1322 dev_kfree_skb_any(skb);
1323 atm_return(vcc, atm_guess_pdu2truesize(len));
1324 goto INCR_DLE;
1326 skb_trim(skb, length);
1328 /* Display the packet */
1329 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1330 xdump(skb->data, skb->len, "RX: ");
1331 printk("\n");)
1333 IF_RX(printk("rx_dle_intr: skb push");)
1334 vcc->push(vcc,skb);
1335 atomic_inc(&vcc->stats->rx);
1336 iadev->rx_pkt_cnt++;
1338 INCR_DLE:
1339 if (++dle == iadev->rx_dle_q.end)
1340 dle = iadev->rx_dle_q.start;
1342 iadev->rx_dle_q.read = dle;
1344 /* if the interrupts are masked because there were no free desc available,
1345 unmask them now. */
1346 if (!iadev->rxing) {
1347 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1348 if (!(state & FREEQ_EMPTY)) {
1349 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1350 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1351 iadev->reass_reg+REASS_MASK_REG);
1352 iadev->rxing++;
1358 static int open_rx(struct atm_vcc *vcc)
1360 IADEV *iadev;
1361 u_short __iomem *vc_table;
1362 u_short __iomem *reass_ptr;
1363 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1365 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1366 iadev = INPH_IA_DEV(vcc->dev);
1367 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1368 if (iadev->phy_type & FE_25MBIT_PHY) {
1369 printk("IA: ABR not support\n");
1370 return -EINVAL;
1373 /* Make only this VCI in the vc table valid and let all
1374 others be invalid entries */
1375 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1376 vc_table += vcc->vci;
1377 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1379 *vc_table = vcc->vci << 6;
1380 /* Also keep a list of open rx vcs so that we can attach them with
1381 incoming PDUs later. */
1382 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1383 (vcc->qos.txtp.traffic_class == ATM_ABR))
1385 srv_cls_param_t srv_p;
1386 init_abr_vc(iadev, &srv_p);
1387 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1389 else { /* for UBR later may need to add CBR logic */
1390 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1391 reass_ptr += vcc->vci;
1392 *reass_ptr = NO_AAL5_PKT;
1395 if (iadev->rx_open[vcc->vci])
1396 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1397 vcc->dev->number, vcc->vci);
1398 iadev->rx_open[vcc->vci] = vcc;
1399 return 0;
1402 static int rx_init(struct atm_dev *dev)
1404 IADEV *iadev;
1405 struct rx_buf_desc __iomem *buf_desc_ptr;
1406 unsigned long rx_pkt_start = 0;
1407 void *dle_addr;
1408 struct abr_vc_table *abr_vc_table;
1409 u16 *vc_table;
1410 u16 *reass_table;
1411 u16 *ptr16;
1412 int i,j, vcsize_sel;
1413 u_short freeq_st_adr;
1414 u_short *freeq_start;
1416 iadev = INPH_IA_DEV(dev);
1417 // spin_lock_init(&iadev->rx_lock);
1419 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1420 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1421 &iadev->rx_dle_dma);
1422 if (!dle_addr) {
1423 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1424 goto err_out;
1426 iadev->rx_dle_q.start = (struct dle*)dle_addr;
1427 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1428 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
1429 iadev->rx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1430 /* the end of the dle q points to the entry after the last
1431 DLE that can be used. */
1433 /* write the upper 20 bits of the start address to rx list address register */
1434 writel(iadev->rx_dle_dma & 0xfffff000,
1435 iadev->dma + IPHASE5575_RX_LIST_ADDR);
1436 IF_INIT(printk("Tx Dle list addr: 0x%08x value: 0x%0x\n",
1437 (u32)(iadev->dma+IPHASE5575_TX_LIST_ADDR),
1438 *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));
1439 printk("Rx Dle list addr: 0x%08x value: 0x%0x\n",
1440 (u32)(iadev->dma+IPHASE5575_RX_LIST_ADDR),
1441 *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)
1443 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1444 writew(0, iadev->reass_reg+MODE_REG);
1445 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1447 /* Receive side control memory map
1448 -------------------------------
1450 Buffer descr 0x0000 (736 - 23K)
1451 VP Table 0x5c00 (256 - 512)
1452 Except q 0x5e00 (128 - 512)
1453 Free buffer q 0x6000 (1K - 2K)
1454 Packet comp q 0x6800 (1K - 2K)
1455 Reass Table 0x7000 (1K - 2K)
1456 VC Table 0x7800 (1K - 2K)
1457 ABR VC Table 0x8000 (1K - 32K)
1458 */
1460 /* Base address for Buffer Descriptor Table */
1461 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1462 /* Set the buffer size register */
1463 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1465 /* Initialize each entry in the Buffer Descriptor Table */
1466 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1467 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1468 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1469 buf_desc_ptr++;
1470 rx_pkt_start = iadev->rx_pkt_ram;
1471 for(i=1; i<=iadev->num_rx_desc; i++)
1473 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1474 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1475 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1476 buf_desc_ptr++;
1477 rx_pkt_start += iadev->rx_buf_sz;
1479 IF_INIT(printk("Rx Buffer desc ptr: 0x%0x\n", (u32)(buf_desc_ptr));)
1480 i = FREE_BUF_DESC_Q*iadev->memSize;
1481 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1482 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1483 writew(i+iadev->num_rx_desc*sizeof(u_short),
1484 iadev->reass_reg+FREEQ_ED_ADR);
1485 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1486 writew(i+iadev->num_rx_desc*sizeof(u_short),
1487 iadev->reass_reg+FREEQ_WR_PTR);
1488 /* Fill the FREEQ with all the free descriptors. */
1489 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1490 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1491 for(i=1; i<=iadev->num_rx_desc; i++)
1493 *freeq_start = (u_short)i;
1494 freeq_start++;
1496 IF_INIT(printk("freeq_start: 0x%0x\n", (u32)freeq_start);)
1497 /* Packet Complete Queue */
1498 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1499 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1500 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1501 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1502 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1504 /* Exception Queue */
1505 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1506 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1507 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1508 iadev->reass_reg+EXCP_Q_ED_ADR);
1509 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1510 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1512 /* Load local copy of FREEQ and PCQ ptrs */
1513 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1514 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1515 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1516 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1517 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1518 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1519 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1520 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1522 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1523 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1524 iadev->rfL.pcq_wr);)
1525 /* just for check - no VP TBL */
1526 /* VP Table */
1527 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1528 /* initialize VP Table for invalid VPIs
1529 - I guess we can write all 1s or 0x000f in the entire memory
1530 space or something similar.
1531 */
1533 /* This seems to work and looks right to me too !!! */
1534 i = REASS_TABLE * iadev->memSize;
1535 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1536 /* initialize Reassembly table to I don't know what ???? */
1537 reass_table = (u16 *)(iadev->reass_ram+i);
1538 j = REASS_TABLE_SZ * iadev->memSize;
1539 for(i=0; i < j; i++)
1540 *reass_table++ = NO_AAL5_PKT;
1541 i = 8*1024;
1542 vcsize_sel = 0;
1543 while (i != iadev->num_vc) {
1544 i /= 2;
1545 vcsize_sel++;
1547 i = RX_VC_TABLE * iadev->memSize;
1548 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1549 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1550 j = RX_VC_TABLE_SZ * iadev->memSize;
1551 for(i = 0; i < j; i++)
1553 /* shift the reassembly pointer by 3 + lower 3 bits of
1554 vc_lkup_base register (=3 for 1K VCs) and the last byte
1555 is those low 3 bits.
1556 Shall program this later.
1557 */
1558 *vc_table = (i << 6) | 15; /* for invalid VCI */
1559 vc_table++;
1561 /* ABR VC table */
1562 i = ABR_VC_TABLE * iadev->memSize;
1563 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1565 i = ABR_VC_TABLE * iadev->memSize;
1566 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1567 j = REASS_TABLE_SZ * iadev->memSize;
1568 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1569 for(i = 0; i < j; i++) {
1570 abr_vc_table->rdf = 0x0003;
1571 abr_vc_table->air = 0x5eb1;
1572 abr_vc_table++;
1575 /* Initialize other registers */
1577 /* VP Filter Register set for VC Reassembly only */
1578 writew(0xff00, iadev->reass_reg+VP_FILTER);
1579 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1580 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1582 /* Packet Timeout Count related Registers :
1583 Set packet timeout to occur in about 3 seconds
1584 Set Packet Aging Interval count register to overflow in about 4 us
1585 */
1586 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
1587 ptr16 = (u16*)j;
1588 i = ((u32)ptr16 >> 6) & 0xff;
1589 ptr16 += j - 1;
1590 i |=(((u32)ptr16 << 2) & 0xff00);
1591 writew(i, iadev->reass_reg+TMOUT_RANGE);
1592 /* initiate the desc_tble */
1593 for(i=0; i<iadev->num_tx_desc;i++)
1594 iadev->desc_tbl[i].timestamp = 0;
1596 /* to clear the interrupt status register - read it */
1597 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1599 /* Mask Register - clear it */
1600 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1602 skb_queue_head_init(&iadev->rx_dma_q);
1603 iadev->rx_free_desc_qhead = NULL;
1604 iadev->rx_open = kmalloc(4*iadev->num_vc,GFP_KERNEL);
1605 if (!iadev->rx_open)
1607 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1608 dev->number);
1609 goto err_free_dle;
1611 memset(iadev->rx_open, 0, 4*iadev->num_vc);
1612 iadev->rxing = 1;
1613 iadev->rx_pkt_cnt = 0;
1614 /* Mode Register */
1615 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1616 return 0;
1618 err_free_dle:
1619 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1620 iadev->rx_dle_dma);
1621 err_out:
1622 return -ENOMEM;
1626 /*
1627 The memory map suggested in appendix A and the coding for it.
1628 Keeping it around just in case we change our mind later.
1630 Buffer descr 0x0000 (128 - 4K)
1631 UBR sched 0x1000 (1K - 4K)
1632 UBR Wait q 0x2000 (1K - 4K)
1633 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1634 (128 - 256) each
1635 extended VC 0x4000 (1K - 8K)
1636 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1637 CBR sched 0x7000 (as needed)
1638 VC table 0x8000 (1K - 32K)
1639 */
1641 static void tx_intr(struct atm_dev *dev)
1643 IADEV *iadev;
1644 unsigned short status;
1645 unsigned long flags;
1647 iadev = INPH_IA_DEV(dev);
1649 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1650 if (status & TRANSMIT_DONE){
1652 IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1653 spin_lock_irqsave(&iadev->tx_lock, flags);
1654 ia_tx_poll(iadev);
1655 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1656 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1657 if (iadev->close_pending)
1658 wake_up(&iadev->close_wait);
1660 if (status & TCQ_NOT_EMPTY)
1662 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1666 static void tx_dle_intr(struct atm_dev *dev)
1668 IADEV *iadev;
1669 struct dle *dle, *cur_dle;
1670 struct sk_buff *skb;
1671 struct atm_vcc *vcc;
1672 struct ia_vcc *iavcc;
1673 u_int dle_lp;
1674 unsigned long flags;
1676 iadev = INPH_IA_DEV(dev);
1677 spin_lock_irqsave(&iadev->tx_lock, flags);
1678 dle = iadev->tx_dle_q.read;
1679 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1680 (sizeof(struct dle)*DLE_ENTRIES - 1);
1681 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1682 while (dle != cur_dle)
1684 /* free the DMAed skb */
1685 skb = skb_dequeue(&iadev->tx_dma_q);
1686 if (!skb) break;
1688 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1689 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1690 pci_unmap_single(iadev->pci, dle->sys_pkt_addr, skb->len,
1691 PCI_DMA_TODEVICE);
1693 vcc = ATM_SKB(skb)->vcc;
1694 if (!vcc) {
1695 printk("tx_dle_intr: vcc is null\n");
1696 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1697 dev_kfree_skb_any(skb);
1699 return;
1701 iavcc = INPH_IA_VCC(vcc);
1702 if (!iavcc) {
1703 printk("tx_dle_intr: iavcc is null\n");
1704 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1705 dev_kfree_skb_any(skb);
1706 return;
1708 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1709 if ((vcc->pop) && (skb->len != 0))
1711 vcc->pop(vcc, skb);
1713 else {
1714 dev_kfree_skb_any(skb);
1717 else { /* Hold the rate-limited skb for flow control */
1718 IA_SKB_STATE(skb) |= IA_DLED;
1719 skb_queue_tail(&iavcc->txing_skb, skb);
1721 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%x \n", (u32)skb);)
1722 if (++dle == iadev->tx_dle_q.end)
1723 dle = iadev->tx_dle_q.start;
1725 iadev->tx_dle_q.read = dle;
1726 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1729 static int open_tx(struct atm_vcc *vcc)
1731 struct ia_vcc *ia_vcc;
1732 IADEV *iadev;
1733 struct main_vc *vc;
1734 struct ext_vc *evc;
1735 int ret;
1736 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1737 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1738 iadev = INPH_IA_DEV(vcc->dev);
1740 if (iadev->phy_type & FE_25MBIT_PHY) {
1741 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1742 printk("IA: ABR not support\n");
1743 return -EINVAL;
1745 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1746 printk("IA: CBR not support\n");
1747 return -EINVAL;
1750 ia_vcc = INPH_IA_VCC(vcc);
1751 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1752 if (vcc->qos.txtp.max_sdu >
1753 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1754 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1755 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1756 vcc->dev_data = NULL;
1757 kfree(ia_vcc);
1758 return -EINVAL;
1760 ia_vcc->vc_desc_cnt = 0;
1761 ia_vcc->txing = 1;
1763 /* find pcr */
1764 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1765 vcc->qos.txtp.pcr = iadev->LineRate;
1766 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1767 vcc->qos.txtp.pcr = iadev->LineRate;
1768 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1769 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1770 if (vcc->qos.txtp.pcr > iadev->LineRate)
1771 vcc->qos.txtp.pcr = iadev->LineRate;
1772 ia_vcc->pcr = vcc->qos.txtp.pcr;
1774 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1775 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1776 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1777 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1778 if (ia_vcc->pcr < iadev->rate_limit)
1779 skb_queue_head_init (&ia_vcc->txing_skb);
1780 if (ia_vcc->pcr < iadev->rate_limit) {
1781 struct sock *sk = sk_atm(vcc);
1783 if (vcc->qos.txtp.max_sdu != 0) {
1784 if (ia_vcc->pcr > 60000)
1785 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1786 else if (ia_vcc->pcr > 2000)
1787 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1788 else
1789 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1791 else
1792 sk->sk_sndbuf = 24576;
1795 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1796 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1797 vc += vcc->vci;
1798 evc += vcc->vci;
1799 memset((caddr_t)vc, 0, sizeof(*vc));
1800 memset((caddr_t)evc, 0, sizeof(*evc));
1802 /* store the most significant 4 bits of vci as the last 4 bits
1803 of first part of atm header.
1804 store the last 12 bits of vci as first 12 bits of the second
1805 part of the atm header.
1806 */
1807 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1808 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1810 /* check the following for different traffic classes */
1811 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1813 vc->type = UBR;
1814 vc->status = CRC_APPEND;
1815 vc->acr = cellrate_to_float(iadev->LineRate);
1816 if (vcc->qos.txtp.pcr > 0)
1817 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1818 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1819 vcc->qos.txtp.max_pcr,vc->acr);)
1821 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1822 { srv_cls_param_t srv_p;
1823 IF_ABR(printk("Tx ABR VCC\n");)
1824 init_abr_vc(iadev, &srv_p);
1825 if (vcc->qos.txtp.pcr > 0)
1826 srv_p.pcr = vcc->qos.txtp.pcr;
1827 if (vcc->qos.txtp.min_pcr > 0) {
1828 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1829 if (tmpsum > iadev->LineRate)
1830 return -EBUSY;
1831 srv_p.mcr = vcc->qos.txtp.min_pcr;
1832 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1834 else srv_p.mcr = 0;
1835 if (vcc->qos.txtp.icr)
1836 srv_p.icr = vcc->qos.txtp.icr;
1837 if (vcc->qos.txtp.tbe)
1838 srv_p.tbe = vcc->qos.txtp.tbe;
1839 if (vcc->qos.txtp.frtt)
1840 srv_p.frtt = vcc->qos.txtp.frtt;
1841 if (vcc->qos.txtp.rif)
1842 srv_p.rif = vcc->qos.txtp.rif;
1843 if (vcc->qos.txtp.rdf)
1844 srv_p.rdf = vcc->qos.txtp.rdf;
1845 if (vcc->qos.txtp.nrm_pres)
1846 srv_p.nrm = vcc->qos.txtp.nrm;
1847 if (vcc->qos.txtp.trm_pres)
1848 srv_p.trm = vcc->qos.txtp.trm;
1849 if (vcc->qos.txtp.adtf_pres)
1850 srv_p.adtf = vcc->qos.txtp.adtf;
1851 if (vcc->qos.txtp.cdf_pres)
1852 srv_p.cdf = vcc->qos.txtp.cdf;
1853 if (srv_p.icr > srv_p.pcr)
1854 srv_p.icr = srv_p.pcr;
1855 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1856 srv_p.pcr, srv_p.mcr);)
1857 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1858 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1859 if (iadev->phy_type & FE_25MBIT_PHY) {
1860 printk("IA: CBR not support\n");
1861 return -EINVAL;
1863 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1864 IF_CBR(printk("PCR is not availble\n");)
1865 return -1;
1867 vc->type = CBR;
1868 vc->status = CRC_APPEND;
1869 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1870 return ret;
1873 else
1874 printk("iadev: Non UBR, ABR and CBR traffic not supportedn");
1876 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1877 IF_EVENT(printk("ia open_tx returning \n");)
1878 return 0;
1882 static int tx_init(struct atm_dev *dev)
1884 IADEV *iadev;
1885 struct tx_buf_desc *buf_desc_ptr;
1886 unsigned int tx_pkt_start;
1887 void *dle_addr;
1888 int i;
1889 u_short tcq_st_adr;
1890 u_short *tcq_start;
1891 u_short prq_st_adr;
1892 u_short *prq_start;
1893 struct main_vc *vc;
1894 struct ext_vc *evc;
1895 u_short tmp16;
1896 u32 vcsize_sel;
1898 iadev = INPH_IA_DEV(dev);
1899 spin_lock_init(&iadev->tx_lock);
1901 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1902 readw(iadev->seg_reg+SEG_MASK_REG));)
1904 /* Allocate 4k (boundary aligned) bytes */
1905 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1906 &iadev->tx_dle_dma);
1907 if (!dle_addr) {
1908 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1909 goto err_out;
1911 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1912 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1913 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
1914 iadev->tx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1916 /* write the upper 20 bits of the start address to tx list address register */
1917 writel(iadev->tx_dle_dma & 0xfffff000,
1918 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1919 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1920 writew(0, iadev->seg_reg+MODE_REG_0);
1921 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1922 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1923 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1924 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1926 /*
1927 Transmit side control memory map
1928 --------------------------------
1929 Buffer descr 0x0000 (128 - 4K)
1930 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1931 (512 - 1K) each
1932 TCQ - 4K, PRQ - 5K
1933 CBR Table 0x1800 (as needed) - 6K
1934 UBR Table 0x3000 (1K - 4K) - 12K
1935 UBR Wait queue 0x4000 (1K - 4K) - 16K
1936 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1937 ABR Tbl - 20K, ABR Wq - 22K
1938 extended VC 0x6000 (1K - 8K) - 24K
1939 VC Table 0x8000 (1K - 32K) - 32K
1941 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1942 and Wait q, which can be allotted later.
1943 */
1945 /* Buffer Descriptor Table Base address */
1946 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1948 /* initialize each entry in the buffer descriptor table */
1949 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1950 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1951 buf_desc_ptr++;
1952 tx_pkt_start = TX_PACKET_RAM;
1953 for(i=1; i<=iadev->num_tx_desc; i++)
1955 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1956 buf_desc_ptr->desc_mode = AAL5;
1957 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1958 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1959 buf_desc_ptr++;
1960 tx_pkt_start += iadev->tx_buf_sz;
1962 iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1963 if (!iadev->tx_buf) {
1964 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1965 goto err_free_dle;
1967 for (i= 0; i< iadev->num_tx_desc; i++)
1969 struct cpcs_trailer *cpcs;
1971 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1972 if(!cpcs) {
1973 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1974 goto err_free_tx_bufs;
1976 iadev->tx_buf[i].cpcs = cpcs;
1977 iadev->tx_buf[i].dma_addr = pci_map_single(iadev->pci,
1978 cpcs, sizeof(*cpcs), PCI_DMA_TODEVICE);
1980 iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1981 sizeof(struct desc_tbl_t), GFP_KERNEL);
1982 if (!iadev->desc_tbl) {
1983 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1984 goto err_free_all_tx_bufs;
1987 /* Communication Queues base address */
1988 i = TX_COMP_Q * iadev->memSize;
1989 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
1991 /* Transmit Complete Queue */
1992 writew(i, iadev->seg_reg+TCQ_ST_ADR);
1993 writew(i, iadev->seg_reg+TCQ_RD_PTR);
1994 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
1995 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
1996 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
1997 iadev->seg_reg+TCQ_ED_ADR);
1998 /* Fill the TCQ with all the free descriptors. */
1999 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
2000 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
2001 for(i=1; i<=iadev->num_tx_desc; i++)
2003 *tcq_start = (u_short)i;
2004 tcq_start++;
2007 /* Packet Ready Queue */
2008 i = PKT_RDY_Q * iadev->memSize;
2009 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2010 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2011 iadev->seg_reg+PRQ_ED_ADR);
2012 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2013 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2015 /* Load local copy of PRQ and TCQ ptrs */
2016 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2017 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2018 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2020 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2021 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2022 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2024 /* Just for safety initializing the queue to have desc 1 always */
2025 /* Fill the PRQ with all the free descriptors. */
2026 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2027 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2028 for(i=1; i<=iadev->num_tx_desc; i++)
2030 *prq_start = (u_short)0; /* desc 1 in all entries */
2031 prq_start++;
2033 /* CBR Table */
2034 IF_INIT(printk("Start CBR Init\n");)
2035 #if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2036 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2037 #else /* Charlie's logic is wrong ? */
2038 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2039 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2040 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2041 #endif
2043 IF_INIT(printk("value in register = 0x%x\n",
2044 readw(iadev->seg_reg+CBR_PTR_BASE));)
2045 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2046 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2047 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2048 readw(iadev->seg_reg+CBR_TAB_BEG));)
2049 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2050 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2051 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
2052 IF_INIT(printk("iadev->seg_reg = 0x%x CBR_PTR_BASE = 0x%x\n",
2053 (u32)iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
2054 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2055 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2056 readw(iadev->seg_reg+CBR_TAB_END+1));)
2058 /* Initialize the CBR Schedualing Table */
2059 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2060 0, iadev->num_vc*6);
2061 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2062 iadev->CbrEntryPt = 0;
2063 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2064 iadev->NumEnabledCBR = 0;
2066 /* UBR scheduling Table and wait queue */
2067 /* initialize all bytes of UBR scheduler table and wait queue to 0
2068 - SCHEDSZ is 1K (# of entries).
2069 - UBR Table size is 4K
2070 - UBR wait queue is 4K
2071 since the table and wait queues are contiguous, all the bytes
2072 can be initialized by one memeset.
2073 */
2075 vcsize_sel = 0;
2076 i = 8*1024;
2077 while (i != iadev->num_vc) {
2078 i /= 2;
2079 vcsize_sel++;
2082 i = MAIN_VC_TABLE * iadev->memSize;
2083 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2084 i = EXT_VC_TABLE * iadev->memSize;
2085 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2086 i = UBR_SCHED_TABLE * iadev->memSize;
2087 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2088 i = UBR_WAIT_Q * iadev->memSize;
2089 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2090 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2091 0, iadev->num_vc*8);
2092 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2093 /* initialize all bytes of ABR scheduler table and wait queue to 0
2094 - SCHEDSZ is 1K (# of entries).
2095 - ABR Table size is 2K
2096 - ABR wait queue is 2K
2097 since the table and wait queues are contiguous, all the bytes
2098 can be intialized by one memeset.
2099 */
2100 i = ABR_SCHED_TABLE * iadev->memSize;
2101 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2102 i = ABR_WAIT_Q * iadev->memSize;
2103 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2105 i = ABR_SCHED_TABLE*iadev->memSize;
2106 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2107 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2108 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2109 iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2110 if (!iadev->testTable) {
2111 printk("Get freepage failed\n");
2112 goto err_free_desc_tbl;
2114 for(i=0; i<iadev->num_vc; i++)
2116 memset((caddr_t)vc, 0, sizeof(*vc));
2117 memset((caddr_t)evc, 0, sizeof(*evc));
2118 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2119 GFP_KERNEL);
2120 if (!iadev->testTable[i])
2121 goto err_free_test_tables;
2122 iadev->testTable[i]->lastTime = 0;
2123 iadev->testTable[i]->fract = 0;
2124 iadev->testTable[i]->vc_status = VC_UBR;
2125 vc++;
2126 evc++;
2129 /* Other Initialization */
2131 /* Max Rate Register */
2132 if (iadev->phy_type & FE_25MBIT_PHY) {
2133 writew(RATE25, iadev->seg_reg+MAXRATE);
2134 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2136 else {
2137 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2138 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2140 /* Set Idle Header Reigisters to be sure */
2141 writew(0, iadev->seg_reg+IDLEHEADHI);
2142 writew(0, iadev->seg_reg+IDLEHEADLO);
2144 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2145 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2147 iadev->close_pending = 0;
2148 init_waitqueue_head(&iadev->close_wait);
2149 init_waitqueue_head(&iadev->timeout_wait);
2150 skb_queue_head_init(&iadev->tx_dma_q);
2151 ia_init_rtn_q(&iadev->tx_return_q);
2153 /* RM Cell Protocol ID and Message Type */
2154 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2155 skb_queue_head_init (&iadev->tx_backlog);
2157 /* Mode Register 1 */
2158 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2160 /* Mode Register 0 */
2161 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2163 /* Interrupt Status Register - read to clear */
2164 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2166 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2167 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2168 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2169 iadev->tx_pkt_cnt = 0;
2170 iadev->rate_limit = iadev->LineRate / 3;
2172 return 0;
2174 err_free_test_tables:
2175 while (--i >= 0)
2176 kfree(iadev->testTable[i]);
2177 kfree(iadev->testTable);
2178 err_free_desc_tbl:
2179 kfree(iadev->desc_tbl);
2180 err_free_all_tx_bufs:
2181 i = iadev->num_tx_desc;
2182 err_free_tx_bufs:
2183 while (--i >= 0) {
2184 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2186 pci_unmap_single(iadev->pci, desc->dma_addr,
2187 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2188 kfree(desc->cpcs);
2190 kfree(iadev->tx_buf);
2191 err_free_dle:
2192 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2193 iadev->tx_dle_dma);
2194 err_out:
2195 return -ENOMEM;
2198 static irqreturn_t ia_int(int irq, void *dev_id, struct pt_regs *regs)
2200 struct atm_dev *dev;
2201 IADEV *iadev;
2202 unsigned int status;
2203 int handled = 0;
2205 dev = dev_id;
2206 iadev = INPH_IA_DEV(dev);
2207 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2209 handled = 1;
2210 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2211 if (status & STAT_REASSINT)
2213 /* do something */
2214 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2215 rx_intr(dev);
2217 if (status & STAT_DLERINT)
2219 /* Clear this bit by writing a 1 to it. */
2220 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
2221 rx_dle_intr(dev);
2223 if (status & STAT_SEGINT)
2225 /* do something */
2226 IF_EVENT(printk("IA: tx_intr \n");)
2227 tx_intr(dev);
2229 if (status & STAT_DLETINT)
2231 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;
2232 tx_dle_intr(dev);
2234 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2236 if (status & STAT_FEINT)
2237 IaFrontEndIntr(iadev);
2240 return IRQ_RETVAL(handled);
2245 /*----------------------------- entries --------------------------------*/
2246 static int get_esi(struct atm_dev *dev)
2248 IADEV *iadev;
2249 int i;
2250 u32 mac1;
2251 u16 mac2;
2253 iadev = INPH_IA_DEV(dev);
2254 mac1 = cpu_to_be32(le32_to_cpu(readl(
2255 iadev->reg+IPHASE5575_MAC1)));
2256 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2257 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2258 for (i=0; i<MAC1_LEN; i++)
2259 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2261 for (i=0; i<MAC2_LEN; i++)
2262 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2263 return 0;
2266 static int reset_sar(struct atm_dev *dev)
2268 IADEV *iadev;
2269 int i, error = 1;
2270 unsigned int pci[64];
2272 iadev = INPH_IA_DEV(dev);
2273 for(i=0; i<64; i++)
2274 if ((error = pci_read_config_dword(iadev->pci,
2275 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2276 return error;
2277 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2278 for(i=0; i<64; i++)
2279 if ((error = pci_write_config_dword(iadev->pci,
2280 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2281 return error;
2282 udelay(5);
2283 return 0;
2287 static int __devinit ia_init(struct atm_dev *dev)
2289 IADEV *iadev;
2290 unsigned long real_base;
2291 void __iomem *base;
2292 unsigned short command;
2293 unsigned char revision;
2294 int error, i;
2296 /* The device has been identified and registered. Now we read
2297 necessary configuration info like memory base address,
2298 interrupt number etc */
2300 IF_INIT(printk(">ia_init\n");)
2301 dev->ci_range.vpi_bits = 0;
2302 dev->ci_range.vci_bits = NR_VCI_LD;
2304 iadev = INPH_IA_DEV(dev);
2305 real_base = pci_resource_start (iadev->pci, 0);
2306 iadev->irq = iadev->pci->irq;
2308 if ((error = pci_read_config_word(iadev->pci, PCI_COMMAND,&command))
2309 || (error = pci_read_config_byte(iadev->pci,
2310 PCI_REVISION_ID,&revision)))
2312 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2313 dev->number,error);
2314 return -EINVAL;
2316 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
2317 dev->number, revision, real_base, iadev->irq);)
2319 /* find mapping size of board */
2321 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2323 if (iadev->pci_map_size == 0x100000){
2324 iadev->num_vc = 4096;
2325 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2326 iadev->memSize = 4;
2328 else if (iadev->pci_map_size == 0x40000) {
2329 iadev->num_vc = 1024;
2330 iadev->memSize = 1;
2332 else {
2333 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2334 return -EINVAL;
2336 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2338 /* enable bus mastering */
2339 pci_set_master(iadev->pci);
2341 /*
2342 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2343 */
2344 udelay(10);
2346 /* mapping the physical address to a virtual address in address space */
2347 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2349 if (!base)
2351 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2352 dev->number);
2353 return error;
2355 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
2356 dev->number, revision, base, iadev->irq);)
2358 /* filling the iphase dev structure */
2359 iadev->mem = iadev->pci_map_size /2;
2360 iadev->real_base = real_base;
2361 iadev->base = base;
2363 /* Bus Interface Control Registers */
2364 iadev->reg = base + REG_BASE;
2365 /* Segmentation Control Registers */
2366 iadev->seg_reg = base + SEG_BASE;
2367 /* Reassembly Control Registers */
2368 iadev->reass_reg = base + REASS_BASE;
2369 /* Front end/ DMA control registers */
2370 iadev->phy = base + PHY_BASE;
2371 iadev->dma = base + PHY_BASE;
2372 /* RAM - Segmentation RAm and Reassembly RAM */
2373 iadev->ram = base + ACTUAL_RAM_BASE;
2374 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2375 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2377 /* lets print out the above */
2378 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2379 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2380 iadev->phy, iadev->ram, iadev->seg_ram,
2381 iadev->reass_ram);)
2383 /* lets try reading the MAC address */
2384 error = get_esi(dev);
2385 if (error) {
2386 iounmap(iadev->base);
2387 return error;
2389 printk("IA: ");
2390 for (i=0; i < ESI_LEN; i++)
2391 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2392 printk("\n");
2394 /* reset SAR */
2395 if (reset_sar(dev)) {
2396 iounmap(iadev->base);
2397 printk("IA: reset SAR fail, please try again\n");
2398 return 1;
2400 return 0;
2403 static void ia_update_stats(IADEV *iadev) {
2404 if (!iadev->carrier_detect)
2405 return;
2406 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2407 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2408 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2409 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2410 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2411 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2412 return;
2415 static void ia_led_timer(unsigned long arg) {
2416 unsigned long flags;
2417 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2418 u_char i;
2419 static u32 ctrl_reg;
2420 for (i = 0; i < iadev_count; i++) {
2421 if (ia_dev[i]) {
2422 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2423 if (blinking[i] == 0) {
2424 blinking[i]++;
2425 ctrl_reg &= (~CTRL_LED);
2426 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2427 ia_update_stats(ia_dev[i]);
2429 else {
2430 blinking[i] = 0;
2431 ctrl_reg |= CTRL_LED;
2432 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2433 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2434 if (ia_dev[i]->close_pending)
2435 wake_up(&ia_dev[i]->close_wait);
2436 ia_tx_poll(ia_dev[i]);
2437 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2441 mod_timer(&ia_timer, jiffies + HZ / 4);
2442 return;
2445 static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2446 unsigned long addr)
2448 writel(value, INPH_IA_DEV(dev)->phy+addr);
2451 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2453 return readl(INPH_IA_DEV(dev)->phy+addr);
2456 static void ia_free_tx(IADEV *iadev)
2458 int i;
2460 kfree(iadev->desc_tbl);
2461 for (i = 0; i < iadev->num_vc; i++)
2462 kfree(iadev->testTable[i]);
2463 kfree(iadev->testTable);
2464 for (i = 0; i < iadev->num_tx_desc; i++) {
2465 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2467 pci_unmap_single(iadev->pci, desc->dma_addr,
2468 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2469 kfree(desc->cpcs);
2471 kfree(iadev->tx_buf);
2472 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2473 iadev->tx_dle_dma);
2476 static void ia_free_rx(IADEV *iadev)
2478 kfree(iadev->rx_open);
2479 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2480 iadev->rx_dle_dma);
2483 static int __devinit ia_start(struct atm_dev *dev)
2485 IADEV *iadev;
2486 int error;
2487 unsigned char phy;
2488 u32 ctrl_reg;
2489 IF_EVENT(printk(">ia_start\n");)
2490 iadev = INPH_IA_DEV(dev);
2491 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
2492 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2493 dev->number, iadev->irq);
2494 error = -EAGAIN;
2495 goto err_out;
2497 /* @@@ should release IRQ on error */
2498 /* enabling memory + master */
2499 if ((error = pci_write_config_word(iadev->pci,
2500 PCI_COMMAND,
2501 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2503 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2504 "master (0x%x)\n",dev->number, error);
2505 error = -EIO;
2506 goto err_free_irq;
2508 udelay(10);
2510 /* Maybe we should reset the front end, initialize Bus Interface Control
2511 Registers and see. */
2513 IF_INIT(printk("Bus ctrl reg: %08x\n",
2514 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2515 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2516 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2517 | CTRL_B8
2518 | CTRL_B16
2519 | CTRL_B32
2520 | CTRL_B48
2521 | CTRL_B64
2522 | CTRL_B128
2523 | CTRL_ERRMASK
2524 | CTRL_DLETMASK /* shud be removed l8r */
2525 | CTRL_DLERMASK
2526 | CTRL_SEGMASK
2527 | CTRL_REASSMASK
2528 | CTRL_FEMASK
2529 | CTRL_CSPREEMPT;
2531 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2533 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2534 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2535 printk("Bus status reg after init: %08x\n",
2536 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2538 ia_hw_type(iadev);
2539 error = tx_init(dev);
2540 if (error)
2541 goto err_free_irq;
2542 error = rx_init(dev);
2543 if (error)
2544 goto err_free_tx;
2546 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2547 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2548 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2549 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2550 phy = 0; /* resolve compiler complaint */
2551 IF_INIT (
2552 if ((phy=ia_phy_get(dev,0)) == 0x30)
2553 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2554 else
2555 printk("IA: utopia,rev.%0x\n",phy);)
2557 if (iadev->phy_type & FE_25MBIT_PHY)
2558 ia_mb25_init(iadev);
2559 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2560 ia_suni_pm7345_init(iadev);
2561 else {
2562 error = suni_init(dev);
2563 if (error)
2564 goto err_free_rx;
2565 /*
2566 * Enable interrupt on loss of signal
2567 * SUNI_RSOP_CIE - 0x10
2568 * SUNI_RSOP_CIE_LOSE - 0x04
2569 */
2570 ia_phy_put(dev, ia_phy_get(dev, 0x10) | 0x04, 0x10);
2571 #ifndef MODULE
2572 error = dev->phy->start(dev);
2573 if (error)
2574 goto err_free_rx;
2575 #endif
2576 /* Get iadev->carrier_detect status */
2577 IaFrontEndIntr(iadev);
2579 return 0;
2581 err_free_rx:
2582 ia_free_rx(iadev);
2583 err_free_tx:
2584 ia_free_tx(iadev);
2585 err_free_irq:
2586 free_irq(iadev->irq, dev);
2587 err_out:
2588 return error;
2591 static void ia_close(struct atm_vcc *vcc)
2593 DEFINE_WAIT(wait);
2594 u16 *vc_table;
2595 IADEV *iadev;
2596 struct ia_vcc *ia_vcc;
2597 struct sk_buff *skb = NULL;
2598 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2599 unsigned long closetime, flags;
2601 iadev = INPH_IA_DEV(vcc->dev);
2602 ia_vcc = INPH_IA_VCC(vcc);
2603 if (!ia_vcc) return;
2605 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2606 ia_vcc->vc_desc_cnt,vcc->vci);)
2607 clear_bit(ATM_VF_READY,&vcc->flags);
2608 skb_queue_head_init (&tmp_tx_backlog);
2609 skb_queue_head_init (&tmp_vcc_backlog);
2610 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2611 iadev->close_pending++;
2612 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2613 schedule_timeout(50);
2614 finish_wait(&iadev->timeout_wait, &wait);
2615 spin_lock_irqsave(&iadev->tx_lock, flags);
2616 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2617 if (ATM_SKB(skb)->vcc == vcc){
2618 if (vcc->pop) vcc->pop(vcc, skb);
2619 else dev_kfree_skb_any(skb);
2621 else
2622 skb_queue_tail(&tmp_tx_backlog, skb);
2624 while((skb = skb_dequeue(&tmp_tx_backlog)))
2625 skb_queue_tail(&iadev->tx_backlog, skb);
2626 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2627 closetime = 300000 / ia_vcc->pcr;
2628 if (closetime == 0)
2629 closetime = 1;
2630 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2631 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2632 spin_lock_irqsave(&iadev->tx_lock, flags);
2633 iadev->close_pending--;
2634 iadev->testTable[vcc->vci]->lastTime = 0;
2635 iadev->testTable[vcc->vci]->fract = 0;
2636 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2637 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2638 if (vcc->qos.txtp.min_pcr > 0)
2639 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2641 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2642 ia_vcc = INPH_IA_VCC(vcc);
2643 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2644 ia_cbrVc_close (vcc);
2646 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2649 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2650 // reset reass table
2651 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2652 vc_table += vcc->vci;
2653 *vc_table = NO_AAL5_PKT;
2654 // reset vc table
2655 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2656 vc_table += vcc->vci;
2657 *vc_table = (vcc->vci << 6) | 15;
2658 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2659 struct abr_vc_table __iomem *abr_vc_table =
2660 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2661 abr_vc_table += vcc->vci;
2662 abr_vc_table->rdf = 0x0003;
2663 abr_vc_table->air = 0x5eb1;
2665 // Drain the packets
2666 rx_dle_intr(vcc->dev);
2667 iadev->rx_open[vcc->vci] = NULL;
2669 kfree(INPH_IA_VCC(vcc));
2670 ia_vcc = NULL;
2671 vcc->dev_data = NULL;
2672 clear_bit(ATM_VF_ADDR,&vcc->flags);
2673 return;
2676 static int ia_open(struct atm_vcc *vcc)
2678 IADEV *iadev;
2679 struct ia_vcc *ia_vcc;
2680 int error;
2681 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2683 IF_EVENT(printk("ia: not partially allocated resources\n");)
2684 vcc->dev_data = NULL;
2686 iadev = INPH_IA_DEV(vcc->dev);
2687 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2689 IF_EVENT(printk("iphase open: unspec part\n");)
2690 set_bit(ATM_VF_ADDR,&vcc->flags);
2692 if (vcc->qos.aal != ATM_AAL5)
2693 return -EINVAL;
2694 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2695 vcc->dev->number, vcc->vpi, vcc->vci);)
2697 /* Device dependent initialization */
2698 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2699 if (!ia_vcc) return -ENOMEM;
2700 vcc->dev_data = ia_vcc;
2702 if ((error = open_rx(vcc)))
2704 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2705 ia_close(vcc);
2706 return error;
2709 if ((error = open_tx(vcc)))
2711 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2712 ia_close(vcc);
2713 return error;
2716 set_bit(ATM_VF_READY,&vcc->flags);
2718 #if 0
2720 static u8 first = 1;
2721 if (first) {
2722 ia_timer.expires = jiffies + 3*HZ;
2723 add_timer(&ia_timer);
2724 first = 0;
2727 #endif
2728 IF_EVENT(printk("ia open returning\n");)
2729 return 0;
2732 static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2734 IF_EVENT(printk(">ia_change_qos\n");)
2735 return 0;
2738 static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2740 IA_CMDBUF ia_cmds;
2741 IADEV *iadev;
2742 int i, board;
2743 u16 __user *tmps;
2744 IF_EVENT(printk(">ia_ioctl\n");)
2745 if (cmd != IA_CMD) {
2746 if (!dev->phy->ioctl) return -EINVAL;
2747 return dev->phy->ioctl(dev,cmd,arg);
2749 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2750 board = ia_cmds.status;
2751 if ((board < 0) || (board > iadev_count))
2752 board = 0;
2753 iadev = ia_dev[board];
2754 switch (ia_cmds.cmd) {
2755 case MEMDUMP:
2757 switch (ia_cmds.sub_cmd) {
2758 case MEMDUMP_DEV:
2759 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2760 if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2761 return -EFAULT;
2762 ia_cmds.status = 0;
2763 break;
2764 case MEMDUMP_SEGREG:
2765 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2766 tmps = (u16 __user *)ia_cmds.buf;
2767 for(i=0; i<0x80; i+=2, tmps++)
2768 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2769 ia_cmds.status = 0;
2770 ia_cmds.len = 0x80;
2771 break;
2772 case MEMDUMP_REASSREG:
2773 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2774 tmps = (u16 __user *)ia_cmds.buf;
2775 for(i=0; i<0x80; i+=2, tmps++)
2776 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2777 ia_cmds.status = 0;
2778 ia_cmds.len = 0x80;
2779 break;
2780 case MEMDUMP_FFL:
2782 ia_regs_t *regs_local;
2783 ffredn_t *ffL;
2784 rfredn_t *rfL;
2786 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2787 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2788 if (!regs_local) return -ENOMEM;
2789 ffL = &regs_local->ffredn;
2790 rfL = &regs_local->rfredn;
2791 /* Copy real rfred registers into the local copy */
2792 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2793 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2794 /* Copy real ffred registers into the local copy */
2795 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2796 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2798 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2799 kfree(regs_local);
2800 return -EFAULT;
2802 kfree(regs_local);
2803 printk("Board %d registers dumped\n", board);
2804 ia_cmds.status = 0;
2806 break;
2807 case READ_REG:
2809 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2810 desc_dbg(iadev);
2811 ia_cmds.status = 0;
2813 break;
2814 case 0x6:
2816 ia_cmds.status = 0;
2817 printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2818 printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2820 break;
2821 case 0x8:
2823 struct k_sonet_stats *stats;
2824 stats = &PRIV(_ia_dev[board])->sonet_stats;
2825 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2826 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2827 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2828 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2829 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2830 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2831 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2832 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2833 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2835 ia_cmds.status = 0;
2836 break;
2837 case 0x9:
2838 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2839 for (i = 1; i <= iadev->num_rx_desc; i++)
2840 free_desc(_ia_dev[board], i);
2841 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2842 iadev->reass_reg+REASS_MASK_REG);
2843 iadev->rxing = 1;
2845 ia_cmds.status = 0;
2846 break;
2848 case 0xb:
2849 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2850 IaFrontEndIntr(iadev);
2851 break;
2852 case 0xa:
2853 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2855 ia_cmds.status = 0;
2856 IADebugFlag = ia_cmds.maddr;
2857 printk("New debug option loaded\n");
2859 break;
2860 default:
2861 ia_cmds.status = 0;
2862 break;
2865 break;
2866 default:
2867 break;
2870 return 0;
2873 static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2874 void __user *optval, int optlen)
2876 IF_EVENT(printk(">ia_getsockopt\n");)
2877 return -EINVAL;
2880 static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
2881 void __user *optval, int optlen)
2883 IF_EVENT(printk(">ia_setsockopt\n");)
2884 return -EINVAL;
2887 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2888 IADEV *iadev;
2889 struct dle *wr_ptr;
2890 struct tx_buf_desc __iomem *buf_desc_ptr;
2891 int desc;
2892 int comp_code;
2893 int total_len;
2894 struct cpcs_trailer *trailer;
2895 struct ia_vcc *iavcc;
2897 iadev = INPH_IA_DEV(vcc->dev);
2898 iavcc = INPH_IA_VCC(vcc);
2899 if (!iavcc->txing) {
2900 printk("discard packet on closed VC\n");
2901 if (vcc->pop)
2902 vcc->pop(vcc, skb);
2903 else
2904 dev_kfree_skb_any(skb);
2905 return 0;
2908 if (skb->len > iadev->tx_buf_sz - 8) {
2909 printk("Transmit size over tx buffer size\n");
2910 if (vcc->pop)
2911 vcc->pop(vcc, skb);
2912 else
2913 dev_kfree_skb_any(skb);
2914 return 0;
2916 if ((u32)skb->data & 3) {
2917 printk("Misaligned SKB\n");
2918 if (vcc->pop)
2919 vcc->pop(vcc, skb);
2920 else
2921 dev_kfree_skb_any(skb);
2922 return 0;
2924 /* Get a descriptor number from our free descriptor queue
2925 We get the descr number from the TCQ now, since I am using
2926 the TCQ as a free buffer queue. Initially TCQ will be
2927 initialized with all the descriptors and is hence, full.
2928 */
2929 desc = get_desc (iadev, iavcc);
2930 if (desc == 0xffff)
2931 return 1;
2932 comp_code = desc >> 13;
2933 desc &= 0x1fff;
2935 if ((desc == 0) || (desc > iadev->num_tx_desc))
2937 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2938 atomic_inc(&vcc->stats->tx);
2939 if (vcc->pop)
2940 vcc->pop(vcc, skb);
2941 else
2942 dev_kfree_skb_any(skb);
2943 return 0; /* return SUCCESS */
2946 if (comp_code)
2948 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2949 desc, comp_code);)
2952 /* remember the desc and vcc mapping */
2953 iavcc->vc_desc_cnt++;
2954 iadev->desc_tbl[desc-1].iavcc = iavcc;
2955 iadev->desc_tbl[desc-1].txskb = skb;
2956 IA_SKB_STATE(skb) = 0;
2958 iadev->ffL.tcq_rd += 2;
2959 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2960 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2961 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2963 /* Put the descriptor number in the packet ready queue
2964 and put the updated write pointer in the DLE field
2965 */
2966 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2968 iadev->ffL.prq_wr += 2;
2969 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2970 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2972 /* Figure out the exact length of the packet and padding required to
2973 make it aligned on a 48 byte boundary. */
2974 total_len = skb->len + sizeof(struct cpcs_trailer);
2975 total_len = ((total_len + 47) / 48) * 48;
2976 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2978 /* Put the packet in a tx buffer */
2979 trailer = iadev->tx_buf[desc-1].cpcs;
2980 IF_TX(printk("Sent: skb = 0x%x skb->data: 0x%x len: %d, desc: %d\n",
2981 (u32)skb, (u32)skb->data, skb->len, desc);)
2982 trailer->control = 0;
2983 /*big endian*/
2984 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2985 trailer->crc32 = 0; /* not needed - dummy bytes */
2987 /* Display the packet */
2988 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2989 skb->len, tcnter++);
2990 xdump(skb->data, skb->len, "TX: ");
2991 printk("\n");)
2993 /* Build the buffer descriptor */
2994 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
2995 buf_desc_ptr += desc; /* points to the corresponding entry */
2996 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
2997 /* Huh ? p.115 of users guide describes this as a read-only register */
2998 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2999 buf_desc_ptr->vc_index = vcc->vci;
3000 buf_desc_ptr->bytes = total_len;
3002 if (vcc->qos.txtp.traffic_class == ATM_ABR)
3003 clear_lockup (vcc, iadev);
3005 /* Build the DLE structure */
3006 wr_ptr = iadev->tx_dle_q.write;
3007 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
3008 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
3009 skb->len, PCI_DMA_TODEVICE);
3010 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
3011 buf_desc_ptr->buf_start_lo;
3012 /* wr_ptr->bytes = swap(total_len); didn't seem to affect ?? */
3013 wr_ptr->bytes = skb->len;
3015 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3016 if ((wr_ptr->bytes >> 2) == 0xb)
3017 wr_ptr->bytes = 0x30;
3019 wr_ptr->mode = TX_DLE_PSI;
3020 wr_ptr->prq_wr_ptr_data = 0;
3022 /* end is not to be used for the DLE q */
3023 if (++wr_ptr == iadev->tx_dle_q.end)
3024 wr_ptr = iadev->tx_dle_q.start;
3026 /* Build trailer dle */
3027 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3028 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3029 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3031 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3032 wr_ptr->mode = DMA_INT_ENABLE;
3033 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3035 /* end is not to be used for the DLE q */
3036 if (++wr_ptr == iadev->tx_dle_q.end)
3037 wr_ptr = iadev->tx_dle_q.start;
3039 iadev->tx_dle_q.write = wr_ptr;
3040 ATM_DESC(skb) = vcc->vci;
3041 skb_queue_tail(&iadev->tx_dma_q, skb);
3043 atomic_inc(&vcc->stats->tx);
3044 iadev->tx_pkt_cnt++;
3045 /* Increment transaction counter */
3046 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3048 #if 0
3049 /* add flow control logic */
3050 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3051 if (iavcc->vc_desc_cnt > 10) {
3052 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3053 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3054 iavcc->flow_inc = -1;
3055 iavcc->saved_tx_quota = vcc->tx_quota;
3056 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3057 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3058 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3059 iavcc->flow_inc = 0;
3062 #endif
3063 IF_TX(printk("ia send done\n");)
3064 return 0;
3067 static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3069 IADEV *iadev;
3070 struct ia_vcc *iavcc;
3071 unsigned long flags;
3073 iadev = INPH_IA_DEV(vcc->dev);
3074 iavcc = INPH_IA_VCC(vcc);
3075 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3077 if (!skb)
3078 printk(KERN_CRIT "null skb in ia_send\n");
3079 else dev_kfree_skb_any(skb);
3080 return -EINVAL;
3082 spin_lock_irqsave(&iadev->tx_lock, flags);
3083 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3084 dev_kfree_skb_any(skb);
3085 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3086 return -EINVAL;
3088 ATM_SKB(skb)->vcc = vcc;
3090 if (skb_peek(&iadev->tx_backlog)) {
3091 skb_queue_tail(&iadev->tx_backlog, skb);
3093 else {
3094 if (ia_pkt_tx (vcc, skb)) {
3095 skb_queue_tail(&iadev->tx_backlog, skb);
3098 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3099 return 0;
3103 static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3105 int left = *pos, n;
3106 char *tmpPtr;
3107 IADEV *iadev = INPH_IA_DEV(dev);
3108 if(!left--) {
3109 if (iadev->phy_type == FE_25MBIT_PHY) {
3110 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3111 return n;
3113 if (iadev->phy_type == FE_DS3_PHY)
3114 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3115 else if (iadev->phy_type == FE_E3_PHY)
3116 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3117 else if (iadev->phy_type == FE_UTP_OPTION)
3118 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3119 else
3120 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3121 tmpPtr = page + n;
3122 if (iadev->pci_map_size == 0x40000)
3123 n += sprintf(tmpPtr, "-1KVC-");
3124 else
3125 n += sprintf(tmpPtr, "-4KVC-");
3126 tmpPtr = page + n;
3127 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3128 n += sprintf(tmpPtr, "1M \n");
3129 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3130 n += sprintf(tmpPtr, "512K\n");
3131 else
3132 n += sprintf(tmpPtr, "128K\n");
3133 return n;
3135 if (!left) {
3136 return sprintf(page, " Number of Tx Buffer: %u\n"
3137 " Size of Tx Buffer : %u\n"
3138 " Number of Rx Buffer: %u\n"
3139 " Size of Rx Buffer : %u\n"
3140 " Packets Receiverd : %u\n"
3141 " Packets Transmitted: %u\n"
3142 " Cells Received : %u\n"
3143 " Cells Transmitted : %u\n"
3144 " Board Dropped Cells: %u\n"
3145 " Board Dropped Pkts : %u\n",
3146 iadev->num_tx_desc, iadev->tx_buf_sz,
3147 iadev->num_rx_desc, iadev->rx_buf_sz,
3148 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3149 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3150 iadev->drop_rxcell, iadev->drop_rxpkt);
3152 return 0;
3155 static const struct atmdev_ops ops = {
3156 .open = ia_open,
3157 .close = ia_close,
3158 .ioctl = ia_ioctl,
3159 .getsockopt = ia_getsockopt,
3160 .setsockopt = ia_setsockopt,
3161 .send = ia_send,
3162 .phy_put = ia_phy_put,
3163 .phy_get = ia_phy_get,
3164 .change_qos = ia_change_qos,
3165 .proc_read = ia_proc_read,
3166 .owner = THIS_MODULE,
3167 };
3169 static int __devinit ia_init_one(struct pci_dev *pdev,
3170 const struct pci_device_id *ent)
3172 struct atm_dev *dev;
3173 IADEV *iadev;
3174 unsigned long flags;
3175 int ret;
3177 iadev = kmalloc(sizeof(*iadev), GFP_KERNEL);
3178 if (!iadev) {
3179 ret = -ENOMEM;
3180 goto err_out;
3182 memset(iadev, 0, sizeof(*iadev));
3183 iadev->pci = pdev;
3185 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3186 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3187 if (pci_enable_device(pdev)) {
3188 ret = -ENODEV;
3189 goto err_out_free_iadev;
3191 dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
3192 if (!dev) {
3193 ret = -ENOMEM;
3194 goto err_out_disable_dev;
3196 dev->dev_data = iadev;
3197 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
3198 IF_INIT(printk("dev_id = 0x%x iadev->LineRate = %d \n", (u32)dev,
3199 iadev->LineRate);)
3201 ia_dev[iadev_count] = iadev;
3202 _ia_dev[iadev_count] = dev;
3203 iadev_count++;
3204 spin_lock_init(&iadev->misc_lock);
3205 /* First fixes first. I don't want to think about this now. */
3206 spin_lock_irqsave(&iadev->misc_lock, flags);
3207 if (ia_init(dev) || ia_start(dev)) {
3208 IF_INIT(printk("IA register failed!\n");)
3209 iadev_count--;
3210 ia_dev[iadev_count] = NULL;
3211 _ia_dev[iadev_count] = NULL;
3212 spin_unlock_irqrestore(&iadev->misc_lock, flags);
3213 ret = -EINVAL;
3214 goto err_out_deregister_dev;
3216 spin_unlock_irqrestore(&iadev->misc_lock, flags);
3217 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3219 iadev->next_board = ia_boards;
3220 ia_boards = dev;
3222 pci_set_drvdata(pdev, dev);
3224 return 0;
3226 err_out_deregister_dev:
3227 atm_dev_deregister(dev);
3228 err_out_disable_dev:
3229 pci_disable_device(pdev);
3230 err_out_free_iadev:
3231 kfree(iadev);
3232 err_out:
3233 return ret;
3236 static void __devexit ia_remove_one(struct pci_dev *pdev)
3238 struct atm_dev *dev = pci_get_drvdata(pdev);
3239 IADEV *iadev = INPH_IA_DEV(dev);
3241 ia_phy_put(dev, ia_phy_get(dev,0x10) & ~(0x4), 0x10);
3242 udelay(1);
3244 /* De-register device */
3245 free_irq(iadev->irq, dev);
3246 iadev_count--;
3247 ia_dev[iadev_count] = NULL;
3248 _ia_dev[iadev_count] = NULL;
3249 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3250 atm_dev_deregister(dev);
3252 iounmap(iadev->base);
3253 pci_disable_device(pdev);
3255 ia_free_rx(iadev);
3256 ia_free_tx(iadev);
3258 kfree(iadev);
3261 static struct pci_device_id ia_pci_tbl[] = {
3262 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3263 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3264 { 0,}
3265 };
3266 MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3268 static struct pci_driver ia_driver = {
3269 .name = DEV_LABEL,
3270 .id_table = ia_pci_tbl,
3271 .probe = ia_init_one,
3272 .remove = __devexit_p(ia_remove_one),
3273 };
3275 static int __init ia_module_init(void)
3277 int ret;
3279 ret = pci_register_driver(&ia_driver);
3280 if (ret >= 0) {
3281 ia_timer.expires = jiffies + 3*HZ;
3282 add_timer(&ia_timer);
3283 } else
3284 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3285 return ret;
3288 static void __exit ia_module_exit(void)
3290 pci_unregister_driver(&ia_driver);
3292 del_timer(&ia_timer);
3295 module_init(ia_module_init);
3296 module_exit(ia_module_exit);