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gerrit-public.fairphone.software / kernel / msm / 8007ea35ef88d0d621c6d192ce48ce7289109f39 / . / drivers / atm / iphase.c
blob: b2c1b37ab2e4dbb2ea5370a8637c9975af9e3146 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/******************************************************************************
2 iphase.c: Device driver for Interphase ATM PCI adapter cards
3 Author: Peter Wang <pwang@iphase.com>
4 Some fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5 Interphase Corporation <www.iphase.com>
6 Version: 1.0
7*******************************************************************************
8
9 This software may be used and distributed according to the terms
10 of the GNU General Public License (GPL), incorporated herein by reference.
11 Drivers based on this skeleton fall under the GPL and must retain
12 the authorship (implicit copyright) notice.
13
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
18
19 Modified from an incomplete driver for Interphase 5575 1KVC 1M card which
20 was originally written by Monalisa Agrawal at UNH. Now this driver
21 supports a variety of varients of Interphase ATM PCI (i)Chip adapter
22 card family (See www.iphase.com/products/ClassSheet.cfm?ClassID=ATM)
23 in terms of PHY type, the size of control memory and the size of
24 packet memory. The followings are the change log and history:
25
26 Bugfix the Mona's UBR driver.
27 Modify the basic memory allocation and dma logic.
28 Port the driver to the latest kernel from 2.0.46.
29 Complete the ABR logic of the driver, and added the ABR work-
30 around for the hardware anormalies.
31 Add the CBR support.
32 Add the flow control logic to the driver to allow rate-limit VC.
33 Add 4K VC support to the board with 512K control memory.
34 Add the support of all the variants of the Interphase ATM PCI
35 (i)Chip adapter cards including x575 (155M OC3 and UTP155), x525
36 (25M UTP25) and x531 (DS3 and E3).
37 Add SMP support.
38
39 Support and updates available at: ftp://ftp.iphase.com/pub/atm
40
41*******************************************************************************/
42
43#include <linux/module.h>
44#include <linux/kernel.h>
45#include <linux/mm.h>
46#include <linux/pci.h>
47#include <linux/errno.h>
48#include <linux/atm.h>
49#include <linux/atmdev.h>
50#include <linux/sonet.h>
51#include <linux/skbuff.h>
52#include <linux/time.h>
53#include <linux/delay.h>
54#include <linux/uio.h>
55#include <linux/init.h>
56#include <linux/wait.h>
57#include <asm/system.h>
58#include <asm/io.h>
59#include <asm/atomic.h>
60#include <asm/uaccess.h>
61#include <asm/string.h>
62#include <asm/byteorder.h>
Julia Lawall420635f2008-04-19 18:14:50 -0700[diff] [blame]63#include <linux/vmalloc.h>
64#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]65#include "iphase.h"
66#include "suni.h"
Wu Fengguangb67445f2009-01-07 18:09:10 -0800[diff] [blame]67#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
Jorge Boncompte [DTI2]2be63b82008-06-17 16:18:49 -0700[diff] [blame]68
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]69#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
70
71static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
72static void desc_dbg(IADEV *iadev);
73
74static IADEV *ia_dev[8];
75static struct atm_dev *_ia_dev[8];
76static int iadev_count;
77static void ia_led_timer(unsigned long arg);
Ingo Molnar8d06afa2005-09-09 13:10:40 -0700[diff] [blame]78static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]79static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
80static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
81static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
82 |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
83
84module_param(IA_TX_BUF, int, 0);
85module_param(IA_TX_BUF_SZ, int, 0);
86module_param(IA_RX_BUF, int, 0);
87module_param(IA_RX_BUF_SZ, int, 0);
88module_param(IADebugFlag, uint, 0644);
89
90MODULE_LICENSE("GPL");
91
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]92/**************************** IA_LIB **********************************/
93
94static void ia_init_rtn_q (IARTN_Q *que)
95{
96 que->next = NULL;
97 que->tail = NULL;
98}
99
100static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
101{
102 data->next = NULL;
103 if (que->next == NULL)
104 que->next = que->tail = data;
105 else {
106 data->next = que->next;
107 que->next = data;
108 }
109 return;
110}
111
112static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
113 IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
114 if (!entry) return -1;
115 entry->data = data;
116 entry->next = NULL;
117 if (que->next == NULL)
118 que->next = que->tail = entry;
119 else {
120 que->tail->next = entry;
121 que->tail = que->tail->next;
122 }
123 return 1;
124}
125
126static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
127 IARTN_Q *tmpdata;
128 if (que->next == NULL)
129 return NULL;
130 tmpdata = que->next;
131 if ( que->next == que->tail)
132 que->next = que->tail = NULL;
133 else
134 que->next = que->next->next;
135 return tmpdata;
136}
137
138static void ia_hack_tcq(IADEV *dev) {
139
140 u_short desc1;
141 u_short tcq_wr;
142 struct ia_vcc *iavcc_r = NULL;
143
144 tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
145 while (dev->host_tcq_wr != tcq_wr) {
146 desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
147 if (!desc1) ;
148 else if (!dev->desc_tbl[desc1 -1].timestamp) {
149 IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
150 *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
151 }
152 else if (dev->desc_tbl[desc1 -1].timestamp) {
153 if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
154 printk("IA: Fatal err in get_desc\n");
155 continue;
156 }
157 iavcc_r->vc_desc_cnt--;
158 dev->desc_tbl[desc1 -1].timestamp = 0;
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]159 IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n",
160 dev->desc_tbl[desc1 -1].txskb, desc1);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]161 if (iavcc_r->pcr < dev->rate_limit) {
162 IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
163 if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
164 printk("ia_hack_tcq: No memory available\n");
165 }
166 dev->desc_tbl[desc1 -1].iavcc = NULL;
167 dev->desc_tbl[desc1 -1].txskb = NULL;
168 }
169 dev->host_tcq_wr += 2;
170 if (dev->host_tcq_wr > dev->ffL.tcq_ed)
171 dev->host_tcq_wr = dev->ffL.tcq_st;
172 }
173} /* ia_hack_tcq */
174
175static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
176 u_short desc_num, i;
177 struct sk_buff *skb;
178 struct ia_vcc *iavcc_r = NULL;
179 unsigned long delta;
180 static unsigned long timer = 0;
181 int ltimeout;
182
183 ia_hack_tcq (dev);
Julia Lawall420635f2008-04-19 18:14:50 -0700[diff] [blame]184 if((time_after(jiffies,timer+50)) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]185 timer = jiffies;
186 i=0;
187 while (i < dev->num_tx_desc) {
188 if (!dev->desc_tbl[i].timestamp) {
189 i++;
190 continue;
191 }
192 ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
193 delta = jiffies - dev->desc_tbl[i].timestamp;
194 if (delta >= ltimeout) {
195 IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
196 if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
197 dev->ffL.tcq_rd = dev->ffL.tcq_ed;
198 else
199 dev->ffL.tcq_rd -= 2;
200 *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
201 if (!(skb = dev->desc_tbl[i].txskb) ||
202 !(iavcc_r = dev->desc_tbl[i].iavcc))
203 printk("Fatal err, desc table vcc or skb is NULL\n");
204 else
205 iavcc_r->vc_desc_cnt--;
206 dev->desc_tbl[i].timestamp = 0;
207 dev->desc_tbl[i].iavcc = NULL;
208 dev->desc_tbl[i].txskb = NULL;
209 }
210 i++;
211 } /* while */
212 }
213 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
214 return 0xFFFF;
215
216 /* Get the next available descriptor number from TCQ */
217 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
218
219 while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
220 dev->ffL.tcq_rd += 2;
221 if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
222 dev->ffL.tcq_rd = dev->ffL.tcq_st;
223 if (dev->ffL.tcq_rd == dev->host_tcq_wr)
224 return 0xFFFF;
225 desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
226 }
227
228 /* get system time */
229 dev->desc_tbl[desc_num -1].timestamp = jiffies;
230 return desc_num;
231}
232
233static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
234 u_char foundLockUp;
235 vcstatus_t *vcstatus;
236 u_short *shd_tbl;
237 u_short tempCellSlot, tempFract;
238 struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
239 struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
240 u_int i;
241
242 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
243 vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
244 vcstatus->cnt++;
245 foundLockUp = 0;
246 if( vcstatus->cnt == 0x05 ) {
247 abr_vc += vcc->vci;
248 eabr_vc += vcc->vci;
249 if( eabr_vc->last_desc ) {
250 if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
251 /* Wait for 10 Micro sec */
252 udelay(10);
253 if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
254 foundLockUp = 1;
255 }
256 else {
257 tempCellSlot = abr_vc->last_cell_slot;
258 tempFract = abr_vc->fraction;
259 if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
260 && (tempFract == dev->testTable[vcc->vci]->fract))
261 foundLockUp = 1;
262 dev->testTable[vcc->vci]->lastTime = tempCellSlot;
263 dev->testTable[vcc->vci]->fract = tempFract;
264 }
265 } /* last descriptor */
266 vcstatus->cnt = 0;
267 } /* vcstatus->cnt */
268
269 if (foundLockUp) {
270 IF_ABR(printk("LOCK UP found\n");)
271 writew(0xFFFD, dev->seg_reg+MODE_REG_0);
272 /* Wait for 10 Micro sec */
273 udelay(10);
274 abr_vc->status &= 0xFFF8;
275 abr_vc->status |= 0x0001; /* state is idle */
276 shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
277 for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
278 if (i < dev->num_vc)
279 shd_tbl[i] = vcc->vci;
280 else
281 IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
282 writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
283 writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
284 writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
285 vcstatus->cnt = 0;
286 } /* foundLockUp */
287
288 } /* if an ABR VC */
289
290
291}
292
293/*
294** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
295**
296** +----+----+------------------+-------------------------------+
297** | R | NZ | 5-bit exponent | 9-bit mantissa |
298** +----+----+------------------+-------------------------------+
299**
Matt LaPlante0779bf22006-11-30 05:24:39 +0100[diff] [blame]300** R = reserved (written as 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]301** NZ = 0 if 0 cells/sec; 1 otherwise
302**
303** if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
304*/
305static u16
306cellrate_to_float(u32 cr)
307{
308
309#define NZ 0x4000
310#define M_BITS 9 /* Number of bits in mantissa */
311#define E_BITS 5 /* Number of bits in exponent */
312#define M_MASK 0x1ff
313#define E_MASK 0x1f
314 u16 flot;
315 u32 tmp = cr & 0x00ffffff;
316 int i = 0;
317 if (cr == 0)
318 return 0;
319 while (tmp != 1) {
320 tmp >>= 1;
321 i++;
322 }
323 if (i == M_BITS)
324 flot = NZ | (i << M_BITS) | (cr & M_MASK);
325 else if (i < M_BITS)
326 flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
327 else
328 flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
329 return flot;
330}
331
332#if 0
333/*
334** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
335*/
336static u32
337float_to_cellrate(u16 rate)
338{
339 u32 exp, mantissa, cps;
340 if ((rate & NZ) == 0)
341 return 0;
342 exp = (rate >> M_BITS) & E_MASK;
343 mantissa = rate & M_MASK;
344 if (exp == 0)
345 return 1;
346 cps = (1 << M_BITS) | mantissa;
347 if (exp == M_BITS)
348 cps = cps;
349 else if (exp > M_BITS)
350 cps <<= (exp - M_BITS);
351 else
352 cps >>= (M_BITS - exp);
353 return cps;
354}
355#endif
356
357static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
358 srv_p->class_type = ATM_ABR;
359 srv_p->pcr = dev->LineRate;
360 srv_p->mcr = 0;
361 srv_p->icr = 0x055cb7;
362 srv_p->tbe = 0xffffff;
363 srv_p->frtt = 0x3a;
364 srv_p->rif = 0xf;
365 srv_p->rdf = 0xb;
366 srv_p->nrm = 0x4;
367 srv_p->trm = 0x7;
368 srv_p->cdf = 0x3;
369 srv_p->adtf = 50;
370}
371
372static int
373ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
374 struct atm_vcc *vcc, u8 flag)
375{
376 f_vc_abr_entry *f_abr_vc;
377 r_vc_abr_entry *r_abr_vc;
378 u32 icr;
379 u8 trm, nrm, crm;
380 u16 adtf, air, *ptr16;
381 f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
382 f_abr_vc += vcc->vci;
383 switch (flag) {
384 case 1: /* FFRED initialization */
385#if 0 /* sanity check */
386 if (srv_p->pcr == 0)
387 return INVALID_PCR;
388 if (srv_p->pcr > dev->LineRate)
389 srv_p->pcr = dev->LineRate;
390 if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
391 return MCR_UNAVAILABLE;
392 if (srv_p->mcr > srv_p->pcr)
393 return INVALID_MCR;
394 if (!(srv_p->icr))
395 srv_p->icr = srv_p->pcr;
396 if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
397 return INVALID_ICR;
398 if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
399 return INVALID_TBE;
400 if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
401 return INVALID_FRTT;
402 if (srv_p->nrm > MAX_NRM)
403 return INVALID_NRM;
404 if (srv_p->trm > MAX_TRM)
405 return INVALID_TRM;
406 if (srv_p->adtf > MAX_ADTF)
407 return INVALID_ADTF;
408 else if (srv_p->adtf == 0)
409 srv_p->adtf = 1;
410 if (srv_p->cdf > MAX_CDF)
411 return INVALID_CDF;
412 if (srv_p->rif > MAX_RIF)
413 return INVALID_RIF;
414 if (srv_p->rdf > MAX_RDF)
415 return INVALID_RDF;
416#endif
417 memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
418 f_abr_vc->f_vc_type = ABR;
419 nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
420 /* i.e 2**n = 2 << (n-1) */
421 f_abr_vc->f_nrm = nrm << 8 | nrm;
422 trm = 100000/(2 << (16 - srv_p->trm));
423 if ( trm == 0) trm = 1;
424 f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
425 crm = srv_p->tbe / nrm;
426 if (crm == 0) crm = 1;
427 f_abr_vc->f_crm = crm & 0xff;
428 f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
429 icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
430 ((srv_p->tbe/srv_p->frtt)*1000000) :
431 (1000000/(srv_p->frtt/srv_p->tbe)));
432 f_abr_vc->f_icr = cellrate_to_float(icr);
433 adtf = (10000 * srv_p->adtf)/8192;
434 if (adtf == 0) adtf = 1;
435 f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
436 f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
437 f_abr_vc->f_acr = f_abr_vc->f_icr;
438 f_abr_vc->f_status = 0x0042;
439 break;
440 case 0: /* RFRED initialization */
441 ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
442 *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
443 r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
444 r_abr_vc += vcc->vci;
445 r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
446 air = srv_p->pcr << (15 - srv_p->rif);
447 if (air == 0) air = 1;
448 r_abr_vc->r_air = cellrate_to_float(air);
449 dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
450 dev->sum_mcr += srv_p->mcr;
451 dev->n_abr++;
452 break;
453 default:
454 break;
455 }
456 return 0;
457}
458static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
459 u32 rateLow=0, rateHigh, rate;
460 int entries;
461 struct ia_vcc *ia_vcc;
462
463 int idealSlot =0, testSlot, toBeAssigned, inc;
464 u32 spacing;
465 u16 *SchedTbl, *TstSchedTbl;
466 u16 cbrVC, vcIndex;
467 u32 fracSlot = 0;
468 u32 sp_mod = 0;
469 u32 sp_mod2 = 0;
470
471 /* IpAdjustTrafficParams */
472 if (vcc->qos.txtp.max_pcr <= 0) {
473 IF_ERR(printk("PCR for CBR not defined\n");)
474 return -1;
475 }
476 rate = vcc->qos.txtp.max_pcr;
477 entries = rate / dev->Granularity;
478 IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
479 entries, rate, dev->Granularity);)
480 if (entries < 1)
481 IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
482 rateLow = entries * dev->Granularity;
483 rateHigh = (entries + 1) * dev->Granularity;
484 if (3*(rate - rateLow) > (rateHigh - rate))
485 entries++;
486 if (entries > dev->CbrRemEntries) {
487 IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
488 IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
489 entries, dev->CbrRemEntries);)
490 return -EBUSY;
491 }
492
493 ia_vcc = INPH_IA_VCC(vcc);
494 ia_vcc->NumCbrEntry = entries;
495 dev->sum_mcr += entries * dev->Granularity;
496 /* IaFFrednInsertCbrSched */
497 // Starting at an arbitrary location, place the entries into the table
498 // as smoothly as possible
499 cbrVC = 0;
500 spacing = dev->CbrTotEntries / entries;
501 sp_mod = dev->CbrTotEntries % entries; // get modulo
502 toBeAssigned = entries;
503 fracSlot = 0;
504 vcIndex = vcc->vci;
505 IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
506 while (toBeAssigned)
507 {
508 // If this is the first time, start the table loading for this connection
509 // as close to entryPoint as possible.
510 if (toBeAssigned == entries)
511 {
512 idealSlot = dev->CbrEntryPt;
513 dev->CbrEntryPt += 2; // Adding 2 helps to prevent clumping
514 if (dev->CbrEntryPt >= dev->CbrTotEntries)
515 dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
516 } else {
517 idealSlot += (u32)(spacing + fracSlot); // Point to the next location
518 // in the table that would be smoothest
519 fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
520 sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
521 }
522 if (idealSlot >= (int)dev->CbrTotEntries)
523 idealSlot -= dev->CbrTotEntries;
524 // Continuously check around this ideal value until a null
525 // location is encountered.
526 SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
527 inc = 0;
528 testSlot = idealSlot;
529 TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]530 IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n",
531 testSlot, TstSchedTbl,toBeAssigned);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]532 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
533 while (cbrVC) // If another VC at this location, we have to keep looking
534 {
535 inc++;
536 testSlot = idealSlot - inc;
537 if (testSlot < 0) { // Wrap if necessary
538 testSlot += dev->CbrTotEntries;
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]539 IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n",
540 SchedTbl,testSlot);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]541 }
542 TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
543 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
544 if (!cbrVC)
545 break;
546 testSlot = idealSlot + inc;
547 if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
548 testSlot -= dev->CbrTotEntries;
549 IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
550 IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
551 testSlot, toBeAssigned);)
552 }
553 // set table index and read in value
554 TstSchedTbl = (u16*)(SchedTbl + testSlot);
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]555 IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n",
556 TstSchedTbl,cbrVC,inc);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]557 memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
558 } /* while */
559 // Move this VCI number into this location of the CBR Sched table.
560 memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex,sizeof(TstSchedTbl));
561 dev->CbrRemEntries--;
562 toBeAssigned--;
563 } /* while */
564
565 /* IaFFrednCbrEnable */
566 dev->NumEnabledCBR++;
567 if (dev->NumEnabledCBR == 1) {
568 writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
569 IF_CBR(printk("CBR is enabled\n");)
570 }
571 return 0;
572}
573static void ia_cbrVc_close (struct atm_vcc *vcc) {
574 IADEV *iadev;
575 u16 *SchedTbl, NullVci = 0;
576 u32 i, NumFound;
577
578 iadev = INPH_IA_DEV(vcc->dev);
579 iadev->NumEnabledCBR--;
580 SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
581 if (iadev->NumEnabledCBR == 0) {
582 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
583 IF_CBR (printk("CBR support disabled\n");)
584 }
585 NumFound = 0;
586 for (i=0; i < iadev->CbrTotEntries; i++)
587 {
588 if (*SchedTbl == vcc->vci) {
589 iadev->CbrRemEntries++;
590 *SchedTbl = NullVci;
591 IF_CBR(NumFound++;)
592 }
593 SchedTbl++;
594 }
595 IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
596}
597
598static int ia_avail_descs(IADEV *iadev) {
599 int tmp = 0;
600 ia_hack_tcq(iadev);
601 if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
602 tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
603 else
604 tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
605 iadev->ffL.tcq_st) / 2;
606 return tmp;
607}
608
609static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
610
611static int ia_que_tx (IADEV *iadev) {
612 struct sk_buff *skb;
613 int num_desc;
614 struct atm_vcc *vcc;
615 struct ia_vcc *iavcc;
616 num_desc = ia_avail_descs(iadev);
617
618 while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
619 if (!(vcc = ATM_SKB(skb)->vcc)) {
620 dev_kfree_skb_any(skb);
621 printk("ia_que_tx: Null vcc\n");
622 break;
623 }
624 if (!test_bit(ATM_VF_READY,&vcc->flags)) {
625 dev_kfree_skb_any(skb);
626 printk("Free the SKB on closed vci %d \n", vcc->vci);
627 break;
628 }
629 iavcc = INPH_IA_VCC(vcc);
630 if (ia_pkt_tx (vcc, skb)) {
631 skb_queue_head(&iadev->tx_backlog, skb);
632 }
633 num_desc--;
634 }
635 return 0;
636}
637
638static void ia_tx_poll (IADEV *iadev) {
639 struct atm_vcc *vcc = NULL;
640 struct sk_buff *skb = NULL, *skb1 = NULL;
641 struct ia_vcc *iavcc;
642 IARTN_Q * rtne;
643
644 ia_hack_tcq(iadev);
645 while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
646 skb = rtne->data.txskb;
647 if (!skb) {
648 printk("ia_tx_poll: skb is null\n");
649 goto out;
650 }
651 vcc = ATM_SKB(skb)->vcc;
652 if (!vcc) {
653 printk("ia_tx_poll: vcc is null\n");
654 dev_kfree_skb_any(skb);
655 goto out;
656 }
657
658 iavcc = INPH_IA_VCC(vcc);
659 if (!iavcc) {
660 printk("ia_tx_poll: iavcc is null\n");
661 dev_kfree_skb_any(skb);
662 goto out;
663 }
664
665 skb1 = skb_dequeue(&iavcc->txing_skb);
666 while (skb1 && (skb1 != skb)) {
667 if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
668 printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
669 }
670 IF_ERR(printk("Release the SKB not match\n");)
671 if ((vcc->pop) && (skb1->len != 0))
672 {
673 vcc->pop(vcc, skb1);
674 IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
675 (long)skb1);)
676 }
677 else
678 dev_kfree_skb_any(skb1);
679 skb1 = skb_dequeue(&iavcc->txing_skb);
680 }
681 if (!skb1) {
682 IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
683 ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
684 break;
685 }
686 if ((vcc->pop) && (skb->len != 0))
687 {
688 vcc->pop(vcc, skb);
689 IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
690 }
691 else
692 dev_kfree_skb_any(skb);
693 kfree(rtne);
694 }
695 ia_que_tx(iadev);
696out:
697 return;
698}
699#if 0
700static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
701{
702 u32 t;
703 int i;
704 /*
705 * Issue a command to enable writes to the NOVRAM
706 */
707 NVRAM_CMD (EXTEND + EWEN);
708 NVRAM_CLR_CE;
709 /*
710 * issue the write command
711 */
712 NVRAM_CMD(IAWRITE + addr);
713 /*
714 * Send the data, starting with D15, then D14, and so on for 16 bits
715 */
716 for (i=15; i>=0; i--) {
717 NVRAM_CLKOUT (val & 0x8000);
718 val <<= 1;
719 }
720 NVRAM_CLR_CE;
721 CFG_OR(NVCE);
722 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
723 while (!(t & NVDO))
724 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
725
726 NVRAM_CLR_CE;
727 /*
728 * disable writes again
729 */
730 NVRAM_CMD(EXTEND + EWDS)
731 NVRAM_CLR_CE;
732 CFG_AND(~NVDI);
733}
734#endif
735
736static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
737{
738 u_short val;
739 u32 t;
740 int i;
741 /*
742 * Read the first bit that was clocked with the falling edge of the
743 * the last command data clock
744 */
745 NVRAM_CMD(IAREAD + addr);
746 /*
747 * Now read the rest of the bits, the next bit read is D14, then D13,
748 * and so on.
749 */
750 val = 0;
751 for (i=15; i>=0; i--) {
752 NVRAM_CLKIN(t);
753 val |= (t << i);
754 }
755 NVRAM_CLR_CE;
756 CFG_AND(~NVDI);
757 return val;
758}
759
760static void ia_hw_type(IADEV *iadev) {
761 u_short memType = ia_eeprom_get(iadev, 25);
762 iadev->memType = memType;
763 if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
764 iadev->num_tx_desc = IA_TX_BUF;
765 iadev->tx_buf_sz = IA_TX_BUF_SZ;
766 iadev->num_rx_desc = IA_RX_BUF;
767 iadev->rx_buf_sz = IA_RX_BUF_SZ;
768 } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
769 if (IA_TX_BUF == DFL_TX_BUFFERS)
770 iadev->num_tx_desc = IA_TX_BUF / 2;
771 else
772 iadev->num_tx_desc = IA_TX_BUF;
773 iadev->tx_buf_sz = IA_TX_BUF_SZ;
774 if (IA_RX_BUF == DFL_RX_BUFFERS)
775 iadev->num_rx_desc = IA_RX_BUF / 2;
776 else
777 iadev->num_rx_desc = IA_RX_BUF;
778 iadev->rx_buf_sz = IA_RX_BUF_SZ;
779 }
780 else {
781 if (IA_TX_BUF == DFL_TX_BUFFERS)
782 iadev->num_tx_desc = IA_TX_BUF / 8;
783 else
784 iadev->num_tx_desc = IA_TX_BUF;
785 iadev->tx_buf_sz = IA_TX_BUF_SZ;
786 if (IA_RX_BUF == DFL_RX_BUFFERS)
787 iadev->num_rx_desc = IA_RX_BUF / 8;
788 else
789 iadev->num_rx_desc = IA_RX_BUF;
790 iadev->rx_buf_sz = IA_RX_BUF_SZ;
791 }
792 iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
793 IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
794 iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
795 iadev->rx_buf_sz, iadev->rx_pkt_ram);)
796
797#if 0
798 if ((memType & FE_MASK) == FE_SINGLE_MODE) {
799 iadev->phy_type = PHY_OC3C_S;
800 else if ((memType & FE_MASK) == FE_UTP_OPTION)
801 iadev->phy_type = PHY_UTP155;
802 else
803 iadev->phy_type = PHY_OC3C_M;
804#endif
805
806 iadev->phy_type = memType & FE_MASK;
807 IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
808 memType,iadev->phy_type);)
809 if (iadev->phy_type == FE_25MBIT_PHY)
810 iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
811 else if (iadev->phy_type == FE_DS3_PHY)
812 iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
813 else if (iadev->phy_type == FE_E3_PHY)
814 iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
815 else
816 iadev->LineRate = (u32)(ATM_OC3_PCR);
817 IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
818
819}
820
821static void IaFrontEndIntr(IADEV *iadev) {
822 volatile IA_SUNI *suni;
823 volatile ia_mb25_t *mb25;
824 volatile suni_pm7345_t *suni_pm7345;
825 u32 intr_status;
826 u_int frmr_intr;
827
828 if(iadev->phy_type & FE_25MBIT_PHY) {
829 mb25 = (ia_mb25_t*)iadev->phy;
830 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
831 } else if (iadev->phy_type & FE_DS3_PHY) {
832 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
833 /* clear FRMR interrupts */
834 frmr_intr = suni_pm7345->suni_ds3_frm_intr_stat;
835 iadev->carrier_detect =
836 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
837 } else if (iadev->phy_type & FE_E3_PHY ) {
838 suni_pm7345 = (suni_pm7345_t *)iadev->phy;
839 frmr_intr = suni_pm7345->suni_e3_frm_maint_intr_ind;
840 iadev->carrier_detect =
841 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
842 }
843 else {
844 suni = (IA_SUNI *)iadev->phy;
845 intr_status = suni->suni_rsop_status & 0xff;
846 iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
847 }
848 if (iadev->carrier_detect)
849 printk("IA: SUNI carrier detected\n");
850 else
851 printk("IA: SUNI carrier lost signal\n");
852 return;
853}
854
855static void ia_mb25_init (IADEV *iadev)
856{
857 volatile ia_mb25_t *mb25 = (ia_mb25_t*)iadev->phy;
858#if 0
859 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
860#endif
861 mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
862 mb25->mb25_diag_control = 0;
863 /*
864 * Initialize carrier detect state
865 */
866 iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
867 return;
868}
869
870static void ia_suni_pm7345_init (IADEV *iadev)
871{
872 volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
873 if (iadev->phy_type & FE_DS3_PHY)
874 {
875 iadev->carrier_detect =
876 Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
877 suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
878 suni_pm7345->suni_ds3_frm_cfg = 1;
879 suni_pm7345->suni_ds3_tran_cfg = 1;
880 suni_pm7345->suni_config = 0;
881 suni_pm7345->suni_splr_cfg = 0;
882 suni_pm7345->suni_splt_cfg = 0;
883 }
884 else
885 {
886 iadev->carrier_detect =
887 Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
888 suni_pm7345->suni_e3_frm_fram_options = 0x4;
889 suni_pm7345->suni_e3_frm_maint_options = 0x20;
890 suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
891 suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
892 suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
893 suni_pm7345->suni_e3_tran_fram_options = 0x1;
894 suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
895 suni_pm7345->suni_splr_cfg = 0x41;
896 suni_pm7345->suni_splt_cfg = 0x41;
897 }
898 /*
899 * Enable RSOP loss of signal interrupt.
900 */
901 suni_pm7345->suni_intr_enbl = 0x28;
902
903 /*
904 * Clear error counters
905 */
906 suni_pm7345->suni_id_reset = 0;
907
908 /*
909 * Clear "PMCTST" in master test register.
910 */
911 suni_pm7345->suni_master_test = 0;
912
913 suni_pm7345->suni_rxcp_ctrl = 0x2c;
914 suni_pm7345->suni_rxcp_fctrl = 0x81;
915
916 suni_pm7345->suni_rxcp_idle_pat_h1 =
917 suni_pm7345->suni_rxcp_idle_pat_h2 =
918 suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
919 suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
920
921 suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
922 suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
923 suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
924 suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
925
926 suni_pm7345->suni_rxcp_cell_pat_h1 =
927 suni_pm7345->suni_rxcp_cell_pat_h2 =
928 suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
929 suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
930
931 suni_pm7345->suni_rxcp_cell_mask_h1 =
932 suni_pm7345->suni_rxcp_cell_mask_h2 =
933 suni_pm7345->suni_rxcp_cell_mask_h3 =
934 suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
935
936 suni_pm7345->suni_txcp_ctrl = 0xa4;
937 suni_pm7345->suni_txcp_intr_en_sts = 0x10;
938 suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
939
940 suni_pm7345->suni_config &= ~(SUNI_PM7345_LLB |
941 SUNI_PM7345_CLB |
942 SUNI_PM7345_DLB |
943 SUNI_PM7345_PLB);
944#ifdef __SNMP__
945 suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
946#endif /* __SNMP__ */
947 return;
948}
949
950
951/***************************** IA_LIB END *****************************/
952
Leonardo Potenzaa22eb6f2008-04-02 00:03:00 -0700[diff] [blame]953#ifdef CONFIG_ATM_IA_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]954static int tcnter = 0;
955static void xdump( u_char* cp, int length, char* prefix )
956{
957 int col, count;
958 u_char prntBuf[120];
959 u_char* pBuf = prntBuf;
960 count = 0;
961 while(count < length){
962 pBuf += sprintf( pBuf, "%s", prefix );
963 for(col = 0;count + col < length && col < 16; col++){
964 if (col != 0 && (col % 4) == 0)
965 pBuf += sprintf( pBuf, " " );
966 pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
967 }
968 while(col++ < 16){ /* pad end of buffer with blanks */
969 if ((col % 4) == 0)
970 sprintf( pBuf, " " );
971 pBuf += sprintf( pBuf, " " );
972 }
973 pBuf += sprintf( pBuf, " " );
974 for(col = 0;count + col < length && col < 16; col++){
975 if (isprint((int)cp[count + col]))
976 pBuf += sprintf( pBuf, "%c", cp[count + col] );
977 else
978 pBuf += sprintf( pBuf, "." );
979 }
Stephen Hemminger32f3dde2009-03-20 06:44:02 +0000[diff] [blame]980 printk("%s\n", prntBuf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]981 count += col;
982 pBuf = prntBuf;
983 }
984
985} /* close xdump(... */
Leonardo Potenzaa22eb6f2008-04-02 00:03:00 -0700[diff] [blame]986#endif /* CONFIG_ATM_IA_DEBUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]987
988
989static struct atm_dev *ia_boards = NULL;
990
991#define ACTUAL_RAM_BASE \
992 RAM_BASE*((iadev->mem)/(128 * 1024))
993#define ACTUAL_SEG_RAM_BASE \
994 IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
995#define ACTUAL_REASS_RAM_BASE \
996 IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
997
998
999/*-- some utilities and memory allocation stuff will come here -------------*/
1000
1001static void desc_dbg(IADEV *iadev) {
1002
1003 u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1004 u32 i;
1005 void __iomem *tmp;
1006 // regval = readl((u32)ia_cmds->maddr);
1007 tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
1008 printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1009 tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1010 readw(iadev->seg_ram+tcq_wr_ptr-2));
1011 printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n", iadev->host_tcq_wr,
1012 iadev->ffL.tcq_rd);
1013 tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
1014 tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
1015 printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1016 i = 0;
1017 while (tcq_st_ptr != tcq_ed_ptr) {
1018 tmp = iadev->seg_ram+tcq_st_ptr;
1019 printk("TCQ slot %d desc = %d Addr = %p\n", i++, readw(tmp), tmp);
1020 tcq_st_ptr += 2;
1021 }
1022 for(i=0; i <iadev->num_tx_desc; i++)
1023 printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1024}
1025
1026
1027/*----------------------------- Recieving side stuff --------------------------*/
1028
1029static void rx_excp_rcvd(struct atm_dev *dev)
1030{
1031#if 0 /* closing the receiving size will cause too many excp int */
1032 IADEV *iadev;
1033 u_short state;
1034 u_short excpq_rd_ptr;
1035 //u_short *ptr;
1036 int vci, error = 1;
1037 iadev = INPH_IA_DEV(dev);
1038 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1039 while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1040 { printk("state = %x \n", state);
1041 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1042 printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1043 if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1044 IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1045 // TODO: update exception stat
1046 vci = readw(iadev->reass_ram+excpq_rd_ptr);
1047 error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1048 // pwang_test
1049 excpq_rd_ptr += 4;
1050 if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1051 excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1052 writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1053 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1054 }
1055#endif
1056}
1057
1058static void free_desc(struct atm_dev *dev, int desc)
1059{
1060 IADEV *iadev;
1061 iadev = INPH_IA_DEV(dev);
1062 writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1063 iadev->rfL.fdq_wr +=2;
1064 if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1065 iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
1066 writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1067}
1068
1069
1070static int rx_pkt(struct atm_dev *dev)
1071{
1072 IADEV *iadev;
1073 struct atm_vcc *vcc;
1074 unsigned short status;
1075 struct rx_buf_desc __iomem *buf_desc_ptr;
1076 int desc;
1077 struct dle* wr_ptr;
1078 int len;
1079 struct sk_buff *skb;
1080 u_int buf_addr, dma_addr;
1081
1082 iadev = INPH_IA_DEV(dev);
1083 if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1084 {
1085 printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1086 return -EINVAL;
1087 }
1088 /* mask 1st 3 bits to get the actual descno. */
1089 desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1090 IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1091 iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1092 printk(" pcq_wr_ptr = 0x%x\n",
1093 readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1094 /* update the read pointer - maybe we shud do this in the end*/
1095 if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1096 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1097 else
1098 iadev->rfL.pcq_rd += 2;
1099 writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1100
1101 /* get the buffer desc entry.
1102 update stuff. - doesn't seem to be any update necessary
1103 */
1104 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1105 /* make the ptr point to the corresponding buffer desc entry */
1106 buf_desc_ptr += desc;
1107 if (!desc || (desc > iadev->num_rx_desc) ||
1108 ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1109 free_desc(dev, desc);
1110 IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1111 return -1;
1112 }
1113 vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1114 if (!vcc)
1115 {
1116 free_desc(dev, desc);
1117 printk("IA: null vcc, drop PDU\n");
1118 return -1;
1119 }
1120
1121
1122 /* might want to check the status bits for errors */
1123 status = (u_short) (buf_desc_ptr->desc_mode);
1124 if (status & (RX_CER | RX_PTE | RX_OFL))
1125 {
1126 atomic_inc(&vcc->stats->rx_err);
1127 IF_ERR(printk("IA: bad packet, dropping it");)
1128 if (status & RX_CER) {
1129 IF_ERR(printk(" cause: packet CRC error\n");)
1130 }
1131 else if (status & RX_PTE) {
1132 IF_ERR(printk(" cause: packet time out\n");)
1133 }
1134 else {
1135 IF_ERR(printk(" cause: buffer over flow\n");)
1136 }
1137 goto out_free_desc;
1138 }
1139
1140 /*
1141 build DLE.
1142 */
1143
1144 buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1145 dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1146 len = dma_addr - buf_addr;
1147 if (len > iadev->rx_buf_sz) {
1148 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1149 atomic_inc(&vcc->stats->rx_err);
1150 goto out_free_desc;
1151 }
1152
1153 if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1154 if (vcc->vci < 32)
1155 printk("Drop control packets\n");
1156 goto out_free_desc;
1157 }
1158 skb_put(skb,len);
1159 // pwang_test
1160 ATM_SKB(skb)->vcc = vcc;
1161 ATM_DESC(skb) = desc;
1162 skb_queue_tail(&iadev->rx_dma_q, skb);
1163
1164 /* Build the DLE structure */
1165 wr_ptr = iadev->rx_dle_q.write;
1166 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
1167 len, PCI_DMA_FROMDEVICE);
1168 wr_ptr->local_pkt_addr = buf_addr;
1169 wr_ptr->bytes = len; /* We don't know this do we ?? */
1170 wr_ptr->mode = DMA_INT_ENABLE;
1171
1172 /* shud take care of wrap around here too. */
1173 if(++wr_ptr == iadev->rx_dle_q.end)
1174 wr_ptr = iadev->rx_dle_q.start;
1175 iadev->rx_dle_q.write = wr_ptr;
1176 udelay(1);
1177 /* Increment transaction counter */
1178 writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1179out: return 0;
1180out_free_desc:
1181 free_desc(dev, desc);
1182 goto out;
1183}
1184
1185static void rx_intr(struct atm_dev *dev)
1186{
1187 IADEV *iadev;
1188 u_short status;
1189 u_short state, i;
1190
1191 iadev = INPH_IA_DEV(dev);
1192 status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1193 IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1194 if (status & RX_PKT_RCVD)
1195 {
1196 /* do something */
1197 /* Basically recvd an interrupt for receving a packet.
1198 A descriptor would have been written to the packet complete
1199 queue. Get all the descriptors and set up dma to move the
1200 packets till the packet complete queue is empty..
1201 */
1202 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1203 IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1204 while(!(state & PCQ_EMPTY))
1205 {
1206 rx_pkt(dev);
1207 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1208 }
1209 iadev->rxing = 1;
1210 }
1211 if (status & RX_FREEQ_EMPT)
1212 {
1213 if (iadev->rxing) {
1214 iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1215 iadev->rx_tmp_jif = jiffies;
1216 iadev->rxing = 0;
1217 }
Julia Lawall420635f2008-04-19 18:14:50 -0700[diff] [blame]1218 else if ((time_after(jiffies, iadev->rx_tmp_jif + 50)) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1219 ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1220 for (i = 1; i <= iadev->num_rx_desc; i++)
1221 free_desc(dev, i);
1222printk("Test logic RUN!!!!\n");
1223 writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1224 iadev->rxing = 1;
1225 }
1226 IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1227 }
1228
1229 if (status & RX_EXCP_RCVD)
1230 {
1231 /* probably need to handle the exception queue also. */
1232 IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1233 rx_excp_rcvd(dev);
1234 }
1235
1236
1237 if (status & RX_RAW_RCVD)
1238 {
1239 /* need to handle the raw incoming cells. This deepnds on
1240 whether we have programmed to receive the raw cells or not.
1241 Else ignore. */
1242 IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n", status);)
1243 }
1244}
1245
1246
1247static void rx_dle_intr(struct atm_dev *dev)
1248{
1249 IADEV *iadev;
1250 struct atm_vcc *vcc;
1251 struct sk_buff *skb;
1252 int desc;
1253 u_short state;
1254 struct dle *dle, *cur_dle;
1255 u_int dle_lp;
1256 int len;
1257 iadev = INPH_IA_DEV(dev);
1258
1259 /* free all the dles done, that is just update our own dle read pointer
1260 - do we really need to do this. Think not. */
1261 /* DMA is done, just get all the recevie buffers from the rx dma queue
1262 and push them up to the higher layer protocol. Also free the desc
1263 associated with the buffer. */
1264 dle = iadev->rx_dle_q.read;
1265 dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1266 cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1267 while(dle != cur_dle)
1268 {
1269 /* free the DMAed skb */
1270 skb = skb_dequeue(&iadev->rx_dma_q);
1271 if (!skb)
1272 goto INCR_DLE;
1273 desc = ATM_DESC(skb);
1274 free_desc(dev, desc);
1275
1276 if (!(len = skb->len))
1277 {
1278 printk("rx_dle_intr: skb len 0\n");
1279 dev_kfree_skb_any(skb);
1280 }
1281 else
1282 {
1283 struct cpcs_trailer *trailer;
1284 u_short length;
1285 struct ia_vcc *ia_vcc;
1286
1287 pci_unmap_single(iadev->pci, iadev->rx_dle_q.write->sys_pkt_addr,
1288 len, PCI_DMA_FROMDEVICE);
1289 /* no VCC related housekeeping done as yet. lets see */
1290 vcc = ATM_SKB(skb)->vcc;
1291 if (!vcc) {
1292 printk("IA: null vcc\n");
1293 dev_kfree_skb_any(skb);
1294 goto INCR_DLE;
1295 }
1296 ia_vcc = INPH_IA_VCC(vcc);
1297 if (ia_vcc == NULL)
1298 {
1299 atomic_inc(&vcc->stats->rx_err);
1300 dev_kfree_skb_any(skb);
1301 atm_return(vcc, atm_guess_pdu2truesize(len));
1302 goto INCR_DLE;
1303 }
1304 // get real pkt length pwang_test
1305 trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1306 skb->len - sizeof(*trailer));
Wu Fengguangb67445f2009-01-07 18:09:10 -0800[diff] [blame]1307 length = swap_byte_order(trailer->length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1308 if ((length > iadev->rx_buf_sz) || (length >
1309 (skb->len - sizeof(struct cpcs_trailer))))
1310 {
1311 atomic_inc(&vcc->stats->rx_err);
1312 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
1313 length, skb->len);)
1314 dev_kfree_skb_any(skb);
1315 atm_return(vcc, atm_guess_pdu2truesize(len));
1316 goto INCR_DLE;
1317 }
1318 skb_trim(skb, length);
1319
1320 /* Display the packet */
1321 IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1322 xdump(skb->data, skb->len, "RX: ");
1323 printk("\n");)
1324
1325 IF_RX(printk("rx_dle_intr: skb push");)
1326 vcc->push(vcc,skb);
1327 atomic_inc(&vcc->stats->rx);
1328 iadev->rx_pkt_cnt++;
1329 }
1330INCR_DLE:
1331 if (++dle == iadev->rx_dle_q.end)
1332 dle = iadev->rx_dle_q.start;
1333 }
1334 iadev->rx_dle_q.read = dle;
1335
1336 /* if the interrupts are masked because there were no free desc available,
1337 unmask them now. */
1338 if (!iadev->rxing) {
1339 state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1340 if (!(state & FREEQ_EMPTY)) {
1341 state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1342 writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1343 iadev->reass_reg+REASS_MASK_REG);
1344 iadev->rxing++;
1345 }
1346 }
1347}
1348
1349
1350static int open_rx(struct atm_vcc *vcc)
1351{
1352 IADEV *iadev;
1353 u_short __iomem *vc_table;
1354 u_short __iomem *reass_ptr;
1355 IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1356
1357 if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1358 iadev = INPH_IA_DEV(vcc->dev);
1359 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1360 if (iadev->phy_type & FE_25MBIT_PHY) {
1361 printk("IA: ABR not support\n");
1362 return -EINVAL;
1363 }
1364 }
1365 /* Make only this VCI in the vc table valid and let all
1366 others be invalid entries */
1367 vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1368 vc_table += vcc->vci;
1369 /* mask the last 6 bits and OR it with 3 for 1K VCs */
1370
1371 *vc_table = vcc->vci << 6;
1372 /* Also keep a list of open rx vcs so that we can attach them with
1373 incoming PDUs later. */
1374 if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1375 (vcc->qos.txtp.traffic_class == ATM_ABR))
1376 {
1377 srv_cls_param_t srv_p;
1378 init_abr_vc(iadev, &srv_p);
1379 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1380 }
1381 else { /* for UBR later may need to add CBR logic */
1382 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1383 reass_ptr += vcc->vci;
1384 *reass_ptr = NO_AAL5_PKT;
1385 }
1386
1387 if (iadev->rx_open[vcc->vci])
1388 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1389 vcc->dev->number, vcc->vci);
1390 iadev->rx_open[vcc->vci] = vcc;
1391 return 0;
1392}
1393
1394static int rx_init(struct atm_dev *dev)
1395{
1396 IADEV *iadev;
1397 struct rx_buf_desc __iomem *buf_desc_ptr;
1398 unsigned long rx_pkt_start = 0;
1399 void *dle_addr;
1400 struct abr_vc_table *abr_vc_table;
1401 u16 *vc_table;
1402 u16 *reass_table;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1403 int i,j, vcsize_sel;
1404 u_short freeq_st_adr;
1405 u_short *freeq_start;
1406
1407 iadev = INPH_IA_DEV(dev);
1408 // spin_lock_init(&iadev->rx_lock);
1409
1410 /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1411 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1412 &iadev->rx_dle_dma);
1413 if (!dle_addr) {
1414 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1415 goto err_out;
1416 }
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1417 iadev->rx_dle_q.start = (struct dle *)dle_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1418 iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1419 iadev->rx_dle_q.write = iadev->rx_dle_q.start;
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1420 iadev->rx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1421 /* the end of the dle q points to the entry after the last
1422 DLE that can be used. */
1423
1424 /* write the upper 20 bits of the start address to rx list address register */
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1425 /* We know this is 32bit bus addressed so the following is safe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1426 writel(iadev->rx_dle_dma & 0xfffff000,
1427 iadev->dma + IPHASE5575_RX_LIST_ADDR);
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]1428 IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n",
1429 iadev->dma+IPHASE5575_TX_LIST_ADDR,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1430 *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]1431 printk("Rx Dle list addr: 0x%p value: 0x%0x\n",
1432 iadev->dma+IPHASE5575_RX_LIST_ADDR,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1433 *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)
1434
1435 writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1436 writew(0, iadev->reass_reg+MODE_REG);
1437 writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1438
1439 /* Receive side control memory map
1440 -------------------------------
1441
1442 Buffer descr 0x0000 (736 - 23K)
1443 VP Table 0x5c00 (256 - 512)
1444 Except q 0x5e00 (128 - 512)
1445 Free buffer q 0x6000 (1K - 2K)
1446 Packet comp q 0x6800 (1K - 2K)
1447 Reass Table 0x7000 (1K - 2K)
1448 VC Table 0x7800 (1K - 2K)
1449 ABR VC Table 0x8000 (1K - 32K)
1450 */
1451
1452 /* Base address for Buffer Descriptor Table */
1453 writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1454 /* Set the buffer size register */
1455 writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1456
1457 /* Initialize each entry in the Buffer Descriptor Table */
1458 iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1459 buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1460 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1461 buf_desc_ptr++;
1462 rx_pkt_start = iadev->rx_pkt_ram;
1463 for(i=1; i<=iadev->num_rx_desc; i++)
1464 {
1465 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1466 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1467 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1468 buf_desc_ptr++;
1469 rx_pkt_start += iadev->rx_buf_sz;
1470 }
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]1471 IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n", buf_desc_ptr);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1472 i = FREE_BUF_DESC_Q*iadev->memSize;
1473 writew(i >> 16, iadev->reass_reg+REASS_QUEUE_BASE);
1474 writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1475 writew(i+iadev->num_rx_desc*sizeof(u_short),
1476 iadev->reass_reg+FREEQ_ED_ADR);
1477 writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1478 writew(i+iadev->num_rx_desc*sizeof(u_short),
1479 iadev->reass_reg+FREEQ_WR_PTR);
1480 /* Fill the FREEQ with all the free descriptors. */
1481 freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1482 freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1483 for(i=1; i<=iadev->num_rx_desc; i++)
1484 {
1485 *freeq_start = (u_short)i;
1486 freeq_start++;
1487 }
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]1488 IF_INIT(printk("freeq_start: 0x%p\n", freeq_start);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1489 /* Packet Complete Queue */
1490 i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1491 writew(i, iadev->reass_reg+PCQ_ST_ADR);
1492 writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1493 writew(i, iadev->reass_reg+PCQ_RD_PTR);
1494 writew(i, iadev->reass_reg+PCQ_WR_PTR);
1495
1496 /* Exception Queue */
1497 i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1498 writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1499 writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1500 iadev->reass_reg+EXCP_Q_ED_ADR);
1501 writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1502 writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1503
1504 /* Load local copy of FREEQ and PCQ ptrs */
1505 iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1506 iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1507 iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1508 iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1509 iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1510 iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1511 iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1512 iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1513
1514 IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1515 iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1516 iadev->rfL.pcq_wr);)
1517 /* just for check - no VP TBL */
1518 /* VP Table */
1519 /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1520 /* initialize VP Table for invalid VPIs
1521 - I guess we can write all 1s or 0x000f in the entire memory
1522 space or something similar.
1523 */
1524
1525 /* This seems to work and looks right to me too !!! */
1526 i = REASS_TABLE * iadev->memSize;
1527 writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1528 /* initialize Reassembly table to I don't know what ???? */
1529 reass_table = (u16 *)(iadev->reass_ram+i);
1530 j = REASS_TABLE_SZ * iadev->memSize;
1531 for(i=0; i < j; i++)
1532 *reass_table++ = NO_AAL5_PKT;
1533 i = 8*1024;
1534 vcsize_sel = 0;
1535 while (i != iadev->num_vc) {
1536 i /= 2;
1537 vcsize_sel++;
1538 }
1539 i = RX_VC_TABLE * iadev->memSize;
1540 writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1541 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1542 j = RX_VC_TABLE_SZ * iadev->memSize;
1543 for(i = 0; i < j; i++)
1544 {
1545 /* shift the reassembly pointer by 3 + lower 3 bits of
1546 vc_lkup_base register (=3 for 1K VCs) and the last byte
1547 is those low 3 bits.
1548 Shall program this later.
1549 */
1550 *vc_table = (i << 6) | 15; /* for invalid VCI */
1551 vc_table++;
1552 }
1553 /* ABR VC table */
1554 i = ABR_VC_TABLE * iadev->memSize;
1555 writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1556
1557 i = ABR_VC_TABLE * iadev->memSize;
1558 abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1559 j = REASS_TABLE_SZ * iadev->memSize;
1560 memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1561 for(i = 0; i < j; i++) {
1562 abr_vc_table->rdf = 0x0003;
1563 abr_vc_table->air = 0x5eb1;
1564 abr_vc_table++;
1565 }
1566
1567 /* Initialize other registers */
1568
1569 /* VP Filter Register set for VC Reassembly only */
1570 writew(0xff00, iadev->reass_reg+VP_FILTER);
1571 writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1572 writew(0x1, iadev->reass_reg+PROTOCOL_ID);
1573
1574 /* Packet Timeout Count related Registers :
1575 Set packet timeout to occur in about 3 seconds
1576 Set Packet Aging Interval count register to overflow in about 4 us
1577 */
1578 writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1579
1580 i = (j >> 6) & 0xFF;
1581 j += 2 * (j - 1);
1582 i |= ((j << 2) & 0xFF00);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1583 writew(i, iadev->reass_reg+TMOUT_RANGE);
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1584
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1585 /* initiate the desc_tble */
1586 for(i=0; i<iadev->num_tx_desc;i++)
1587 iadev->desc_tbl[i].timestamp = 0;
1588
1589 /* to clear the interrupt status register - read it */
1590 readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1591
1592 /* Mask Register - clear it */
1593 writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1594
1595 skb_queue_head_init(&iadev->rx_dma_q);
1596 iadev->rx_free_desc_qhead = NULL;
Mariusz Kozlowskif7141762007-08-10 15:26:18 -0700[diff] [blame]1597
1598 iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL);
1599 if (!iadev->rx_open) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1600 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1601 dev->number);
1602 goto err_free_dle;
1603 }
Mariusz Kozlowskif7141762007-08-10 15:26:18 -0700[diff] [blame]1604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1605 iadev->rxing = 1;
1606 iadev->rx_pkt_cnt = 0;
1607 /* Mode Register */
1608 writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1609 return 0;
1610
1611err_free_dle:
1612 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1613 iadev->rx_dle_dma);
1614err_out:
1615 return -ENOMEM;
1616}
1617
1618
1619/*
1620 The memory map suggested in appendix A and the coding for it.
1621 Keeping it around just in case we change our mind later.
1622
1623 Buffer descr 0x0000 (128 - 4K)
1624 UBR sched 0x1000 (1K - 4K)
1625 UBR Wait q 0x2000 (1K - 4K)
1626 Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
1627 (128 - 256) each
1628 extended VC 0x4000 (1K - 8K)
1629 ABR sched 0x6000 and ABR wait queue (1K - 2K) each
1630 CBR sched 0x7000 (as needed)
1631 VC table 0x8000 (1K - 32K)
1632*/
1633
1634static void tx_intr(struct atm_dev *dev)
1635{
1636 IADEV *iadev;
1637 unsigned short status;
1638 unsigned long flags;
1639
1640 iadev = INPH_IA_DEV(dev);
1641
1642 status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1643 if (status & TRANSMIT_DONE){
1644
1645 IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1646 spin_lock_irqsave(&iadev->tx_lock, flags);
1647 ia_tx_poll(iadev);
1648 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1649 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1650 if (iadev->close_pending)
1651 wake_up(&iadev->close_wait);
1652 }
1653 if (status & TCQ_NOT_EMPTY)
1654 {
1655 IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1656 }
1657}
1658
1659static void tx_dle_intr(struct atm_dev *dev)
1660{
1661 IADEV *iadev;
1662 struct dle *dle, *cur_dle;
1663 struct sk_buff *skb;
1664 struct atm_vcc *vcc;
1665 struct ia_vcc *iavcc;
1666 u_int dle_lp;
1667 unsigned long flags;
1668
1669 iadev = INPH_IA_DEV(dev);
1670 spin_lock_irqsave(&iadev->tx_lock, flags);
1671 dle = iadev->tx_dle_q.read;
1672 dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1673 (sizeof(struct dle)*DLE_ENTRIES - 1);
1674 cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1675 while (dle != cur_dle)
1676 {
1677 /* free the DMAed skb */
1678 skb = skb_dequeue(&iadev->tx_dma_q);
1679 if (!skb) break;
1680
1681 /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1682 if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1683 pci_unmap_single(iadev->pci, dle->sys_pkt_addr, skb->len,
1684 PCI_DMA_TODEVICE);
1685 }
1686 vcc = ATM_SKB(skb)->vcc;
1687 if (!vcc) {
1688 printk("tx_dle_intr: vcc is null\n");
1689 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1690 dev_kfree_skb_any(skb);
1691
1692 return;
1693 }
1694 iavcc = INPH_IA_VCC(vcc);
1695 if (!iavcc) {
1696 printk("tx_dle_intr: iavcc is null\n");
1697 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1698 dev_kfree_skb_any(skb);
1699 return;
1700 }
1701 if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1702 if ((vcc->pop) && (skb->len != 0))
1703 {
1704 vcc->pop(vcc, skb);
1705 }
1706 else {
1707 dev_kfree_skb_any(skb);
1708 }
1709 }
1710 else { /* Hold the rate-limited skb for flow control */
1711 IA_SKB_STATE(skb) |= IA_DLED;
1712 skb_queue_tail(&iavcc->txing_skb, skb);
1713 }
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]1714 IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n", skb);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1715 if (++dle == iadev->tx_dle_q.end)
1716 dle = iadev->tx_dle_q.start;
1717 }
1718 iadev->tx_dle_q.read = dle;
1719 spin_unlock_irqrestore(&iadev->tx_lock, flags);
1720}
1721
1722static int open_tx(struct atm_vcc *vcc)
1723{
1724 struct ia_vcc *ia_vcc;
1725 IADEV *iadev;
1726 struct main_vc *vc;
1727 struct ext_vc *evc;
1728 int ret;
1729 IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1730 if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1731 iadev = INPH_IA_DEV(vcc->dev);
1732
1733 if (iadev->phy_type & FE_25MBIT_PHY) {
1734 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1735 printk("IA: ABR not support\n");
1736 return -EINVAL;
1737 }
1738 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1739 printk("IA: CBR not support\n");
1740 return -EINVAL;
1741 }
1742 }
1743 ia_vcc = INPH_IA_VCC(vcc);
1744 memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1745 if (vcc->qos.txtp.max_sdu >
1746 (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1747 printk("IA: SDU size over (%d) the configured SDU size %d\n",
1748 vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1749 vcc->dev_data = NULL;
1750 kfree(ia_vcc);
1751 return -EINVAL;
1752 }
1753 ia_vcc->vc_desc_cnt = 0;
1754 ia_vcc->txing = 1;
1755
1756 /* find pcr */
1757 if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1758 vcc->qos.txtp.pcr = iadev->LineRate;
1759 else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1760 vcc->qos.txtp.pcr = iadev->LineRate;
1761 else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1762 vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1763 if (vcc->qos.txtp.pcr > iadev->LineRate)
1764 vcc->qos.txtp.pcr = iadev->LineRate;
1765 ia_vcc->pcr = vcc->qos.txtp.pcr;
1766
1767 if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1768 else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1769 else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1770 else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
1771 if (ia_vcc->pcr < iadev->rate_limit)
1772 skb_queue_head_init (&ia_vcc->txing_skb);
1773 if (ia_vcc->pcr < iadev->rate_limit) {
1774 struct sock *sk = sk_atm(vcc);
1775
1776 if (vcc->qos.txtp.max_sdu != 0) {
1777 if (ia_vcc->pcr > 60000)
1778 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1779 else if (ia_vcc->pcr > 2000)
1780 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1781 else
1782 sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1783 }
1784 else
1785 sk->sk_sndbuf = 24576;
1786 }
1787
1788 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1789 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1790 vc += vcc->vci;
1791 evc += vcc->vci;
1792 memset((caddr_t)vc, 0, sizeof(*vc));
1793 memset((caddr_t)evc, 0, sizeof(*evc));
1794
1795 /* store the most significant 4 bits of vci as the last 4 bits
1796 of first part of atm header.
1797 store the last 12 bits of vci as first 12 bits of the second
1798 part of the atm header.
1799 */
1800 evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1801 evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1802
1803 /* check the following for different traffic classes */
1804 if (vcc->qos.txtp.traffic_class == ATM_UBR)
1805 {
1806 vc->type = UBR;
1807 vc->status = CRC_APPEND;
1808 vc->acr = cellrate_to_float(iadev->LineRate);
1809 if (vcc->qos.txtp.pcr > 0)
1810 vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1811 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1812 vcc->qos.txtp.max_pcr,vc->acr);)
1813 }
1814 else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1815 { srv_cls_param_t srv_p;
1816 IF_ABR(printk("Tx ABR VCC\n");)
1817 init_abr_vc(iadev, &srv_p);
1818 if (vcc->qos.txtp.pcr > 0)
1819 srv_p.pcr = vcc->qos.txtp.pcr;
1820 if (vcc->qos.txtp.min_pcr > 0) {
1821 int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1822 if (tmpsum > iadev->LineRate)
1823 return -EBUSY;
1824 srv_p.mcr = vcc->qos.txtp.min_pcr;
1825 iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1826 }
1827 else srv_p.mcr = 0;
1828 if (vcc->qos.txtp.icr)
1829 srv_p.icr = vcc->qos.txtp.icr;
1830 if (vcc->qos.txtp.tbe)
1831 srv_p.tbe = vcc->qos.txtp.tbe;
1832 if (vcc->qos.txtp.frtt)
1833 srv_p.frtt = vcc->qos.txtp.frtt;
1834 if (vcc->qos.txtp.rif)
1835 srv_p.rif = vcc->qos.txtp.rif;
1836 if (vcc->qos.txtp.rdf)
1837 srv_p.rdf = vcc->qos.txtp.rdf;
1838 if (vcc->qos.txtp.nrm_pres)
1839 srv_p.nrm = vcc->qos.txtp.nrm;
1840 if (vcc->qos.txtp.trm_pres)
1841 srv_p.trm = vcc->qos.txtp.trm;
1842 if (vcc->qos.txtp.adtf_pres)
1843 srv_p.adtf = vcc->qos.txtp.adtf;
1844 if (vcc->qos.txtp.cdf_pres)
1845 srv_p.cdf = vcc->qos.txtp.cdf;
1846 if (srv_p.icr > srv_p.pcr)
1847 srv_p.icr = srv_p.pcr;
1848 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n",
1849 srv_p.pcr, srv_p.mcr);)
1850 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1851 } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1852 if (iadev->phy_type & FE_25MBIT_PHY) {
1853 printk("IA: CBR not support\n");
1854 return -EINVAL;
1855 }
1856 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1857 IF_CBR(printk("PCR is not availble\n");)
1858 return -1;
1859 }
1860 vc->type = CBR;
1861 vc->status = CRC_APPEND;
1862 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1863 return ret;
1864 }
1865 }
1866 else
1867 printk("iadev: Non UBR, ABR and CBR traffic not supportedn");
1868
1869 iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1870 IF_EVENT(printk("ia open_tx returning \n");)
1871 return 0;
1872}
1873
1874
1875static int tx_init(struct atm_dev *dev)
1876{
1877 IADEV *iadev;
1878 struct tx_buf_desc *buf_desc_ptr;
1879 unsigned int tx_pkt_start;
1880 void *dle_addr;
1881 int i;
1882 u_short tcq_st_adr;
1883 u_short *tcq_start;
1884 u_short prq_st_adr;
1885 u_short *prq_start;
1886 struct main_vc *vc;
1887 struct ext_vc *evc;
1888 u_short tmp16;
1889 u32 vcsize_sel;
1890
1891 iadev = INPH_IA_DEV(dev);
1892 spin_lock_init(&iadev->tx_lock);
1893
1894 IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1895 readw(iadev->seg_reg+SEG_MASK_REG));)
1896
1897 /* Allocate 4k (boundary aligned) bytes */
1898 dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1899 &iadev->tx_dle_dma);
1900 if (!dle_addr) {
1901 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1902 goto err_out;
1903 }
1904 iadev->tx_dle_q.start = (struct dle*)dle_addr;
1905 iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1906 iadev->tx_dle_q.write = iadev->tx_dle_q.start;
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]1907 iadev->tx_dle_q.end = (struct dle*)((unsigned long)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1908
1909 /* write the upper 20 bits of the start address to tx list address register */
1910 writel(iadev->tx_dle_dma & 0xfffff000,
1911 iadev->dma + IPHASE5575_TX_LIST_ADDR);
1912 writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1913 writew(0, iadev->seg_reg+MODE_REG_0);
1914 writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1915 iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1916 iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1917 iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1918
1919 /*
1920 Transmit side control memory map
1921 --------------------------------
1922 Buffer descr 0x0000 (128 - 4K)
1923 Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
1924 (512 - 1K) each
1925 TCQ - 4K, PRQ - 5K
1926 CBR Table 0x1800 (as needed) - 6K
1927 UBR Table 0x3000 (1K - 4K) - 12K
1928 UBR Wait queue 0x4000 (1K - 4K) - 16K
1929 ABR sched 0x5000 and ABR wait queue (1K - 2K) each
1930 ABR Tbl - 20K, ABR Wq - 22K
1931 extended VC 0x6000 (1K - 8K) - 24K
1932 VC Table 0x8000 (1K - 32K) - 32K
1933
1934 Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1935 and Wait q, which can be allotted later.
1936 */
1937
1938 /* Buffer Descriptor Table Base address */
1939 writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1940
1941 /* initialize each entry in the buffer descriptor table */
1942 buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1943 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1944 buf_desc_ptr++;
1945 tx_pkt_start = TX_PACKET_RAM;
1946 for(i=1; i<=iadev->num_tx_desc; i++)
1947 {
1948 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1949 buf_desc_ptr->desc_mode = AAL5;
1950 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1951 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1952 buf_desc_ptr++;
1953 tx_pkt_start += iadev->tx_buf_sz;
1954 }
1955 iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1956 if (!iadev->tx_buf) {
1957 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1958 goto err_free_dle;
1959 }
1960 for (i= 0; i< iadev->num_tx_desc; i++)
1961 {
1962 struct cpcs_trailer *cpcs;
1963
1964 cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1965 if(!cpcs) {
1966 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1967 goto err_free_tx_bufs;
1968 }
1969 iadev->tx_buf[i].cpcs = cpcs;
1970 iadev->tx_buf[i].dma_addr = pci_map_single(iadev->pci,
1971 cpcs, sizeof(*cpcs), PCI_DMA_TODEVICE);
1972 }
1973 iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1974 sizeof(struct desc_tbl_t), GFP_KERNEL);
1975 if (!iadev->desc_tbl) {
1976 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1977 goto err_free_all_tx_bufs;
1978 }
1979
1980 /* Communication Queues base address */
1981 i = TX_COMP_Q * iadev->memSize;
1982 writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
1983
1984 /* Transmit Complete Queue */
1985 writew(i, iadev->seg_reg+TCQ_ST_ADR);
1986 writew(i, iadev->seg_reg+TCQ_RD_PTR);
1987 writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
1988 iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
1989 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
1990 iadev->seg_reg+TCQ_ED_ADR);
1991 /* Fill the TCQ with all the free descriptors. */
1992 tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
1993 tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
1994 for(i=1; i<=iadev->num_tx_desc; i++)
1995 {
1996 *tcq_start = (u_short)i;
1997 tcq_start++;
1998 }
1999
2000 /* Packet Ready Queue */
2001 i = PKT_RDY_Q * iadev->memSize;
2002 writew(i, iadev->seg_reg+PRQ_ST_ADR);
2003 writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2004 iadev->seg_reg+PRQ_ED_ADR);
2005 writew(i, iadev->seg_reg+PRQ_RD_PTR);
2006 writew(i, iadev->seg_reg+PRQ_WR_PTR);
2007
2008 /* Load local copy of PRQ and TCQ ptrs */
2009 iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2010 iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2011 iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2012
2013 iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2014 iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2015 iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2016
2017 /* Just for safety initializing the queue to have desc 1 always */
2018 /* Fill the PRQ with all the free descriptors. */
2019 prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2020 prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2021 for(i=1; i<=iadev->num_tx_desc; i++)
2022 {
2023 *prq_start = (u_short)0; /* desc 1 in all entries */
2024 prq_start++;
2025 }
2026 /* CBR Table */
2027 IF_INIT(printk("Start CBR Init\n");)
2028#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
2029 writew(0,iadev->seg_reg+CBR_PTR_BASE);
2030#else /* Charlie's logic is wrong ? */
2031 tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2032 IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2033 writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2034#endif
2035
2036 IF_INIT(printk("value in register = 0x%x\n",
2037 readw(iadev->seg_reg+CBR_PTR_BASE));)
2038 tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2039 writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2040 IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2041 readw(iadev->seg_reg+CBR_TAB_BEG));)
2042 writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2043 tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2044 writew(tmp16, iadev->seg_reg+CBR_TAB_END);
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]2045 IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n",
2046 iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2047 IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2048 readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2049 readw(iadev->seg_reg+CBR_TAB_END+1));)
2050
2051 /* Initialize the CBR Schedualing Table */
2052 memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2053 0, iadev->num_vc*6);
2054 iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2055 iadev->CbrEntryPt = 0;
2056 iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2057 iadev->NumEnabledCBR = 0;
2058
2059 /* UBR scheduling Table and wait queue */
2060 /* initialize all bytes of UBR scheduler table and wait queue to 0
2061 - SCHEDSZ is 1K (# of entries).
2062 - UBR Table size is 4K
2063 - UBR wait queue is 4K
2064 since the table and wait queues are contiguous, all the bytes
2065 can be initialized by one memeset.
2066 */
2067
2068 vcsize_sel = 0;
2069 i = 8*1024;
2070 while (i != iadev->num_vc) {
2071 i /= 2;
2072 vcsize_sel++;
2073 }
2074
2075 i = MAIN_VC_TABLE * iadev->memSize;
2076 writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2077 i = EXT_VC_TABLE * iadev->memSize;
2078 writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2079 i = UBR_SCHED_TABLE * iadev->memSize;
2080 writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
2081 i = UBR_WAIT_Q * iadev->memSize;
2082 writew((i >> 7) & 0xffff, iadev->seg_reg+UBRWQ_BASE);
2083 memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2084 0, iadev->num_vc*8);
2085 /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2086 /* initialize all bytes of ABR scheduler table and wait queue to 0
2087 - SCHEDSZ is 1K (# of entries).
2088 - ABR Table size is 2K
2089 - ABR wait queue is 2K
2090 since the table and wait queues are contiguous, all the bytes
2091 can be intialized by one memeset.
2092 */
2093 i = ABR_SCHED_TABLE * iadev->memSize;
2094 writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2095 i = ABR_WAIT_Q * iadev->memSize;
2096 writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2097
2098 i = ABR_SCHED_TABLE*iadev->memSize;
2099 memset((caddr_t)(iadev->seg_ram+i), 0, iadev->num_vc*4);
2100 vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2101 evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2102 iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2103 if (!iadev->testTable) {
2104 printk("Get freepage failed\n");
2105 goto err_free_desc_tbl;
2106 }
2107 for(i=0; i<iadev->num_vc; i++)
2108 {
2109 memset((caddr_t)vc, 0, sizeof(*vc));
2110 memset((caddr_t)evc, 0, sizeof(*evc));
2111 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2112 GFP_KERNEL);
2113 if (!iadev->testTable[i])
2114 goto err_free_test_tables;
2115 iadev->testTable[i]->lastTime = 0;
2116 iadev->testTable[i]->fract = 0;
2117 iadev->testTable[i]->vc_status = VC_UBR;
2118 vc++;
2119 evc++;
2120 }
2121
2122 /* Other Initialization */
2123
2124 /* Max Rate Register */
2125 if (iadev->phy_type & FE_25MBIT_PHY) {
2126 writew(RATE25, iadev->seg_reg+MAXRATE);
2127 writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2128 }
2129 else {
2130 writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2131 writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2132 }
2133 /* Set Idle Header Reigisters to be sure */
2134 writew(0, iadev->seg_reg+IDLEHEADHI);
2135 writew(0, iadev->seg_reg+IDLEHEADLO);
2136
2137 /* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
2138 writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2139
2140 iadev->close_pending = 0;
2141 init_waitqueue_head(&iadev->close_wait);
2142 init_waitqueue_head(&iadev->timeout_wait);
2143 skb_queue_head_init(&iadev->tx_dma_q);
2144 ia_init_rtn_q(&iadev->tx_return_q);
2145
2146 /* RM Cell Protocol ID and Message Type */
2147 writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2148 skb_queue_head_init (&iadev->tx_backlog);
2149
2150 /* Mode Register 1 */
2151 writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2152
2153 /* Mode Register 0 */
2154 writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2155
2156 /* Interrupt Status Register - read to clear */
2157 readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2158
2159 /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2160 writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2161 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2162 iadev->tx_pkt_cnt = 0;
2163 iadev->rate_limit = iadev->LineRate / 3;
2164
2165 return 0;
2166
2167err_free_test_tables:
2168 while (--i >= 0)
2169 kfree(iadev->testTable[i]);
2170 kfree(iadev->testTable);
2171err_free_desc_tbl:
2172 kfree(iadev->desc_tbl);
2173err_free_all_tx_bufs:
2174 i = iadev->num_tx_desc;
2175err_free_tx_bufs:
2176 while (--i >= 0) {
2177 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2178
2179 pci_unmap_single(iadev->pci, desc->dma_addr,
2180 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2181 kfree(desc->cpcs);
2182 }
2183 kfree(iadev->tx_buf);
2184err_free_dle:
2185 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2186 iadev->tx_dle_dma);
2187err_out:
2188 return -ENOMEM;
2189}
2190
David Howells7d12e782006-10-05 14:55:46 +0100[diff] [blame]2191static irqreturn_t ia_int(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2192{
2193 struct atm_dev *dev;
2194 IADEV *iadev;
2195 unsigned int status;
2196 int handled = 0;
2197
2198 dev = dev_id;
2199 iadev = INPH_IA_DEV(dev);
2200 while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2201 {
2202 handled = 1;
2203 IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2204 if (status & STAT_REASSINT)
2205 {
2206 /* do something */
2207 IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2208 rx_intr(dev);
2209 }
2210 if (status & STAT_DLERINT)
2211 {
2212 /* Clear this bit by writing a 1 to it. */
2213 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
2214 rx_dle_intr(dev);
2215 }
2216 if (status & STAT_SEGINT)
2217 {
2218 /* do something */
2219 IF_EVENT(printk("IA: tx_intr \n");)
2220 tx_intr(dev);
2221 }
2222 if (status & STAT_DLETINT)
2223 {
2224 *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;
2225 tx_dle_intr(dev);
2226 }
2227 if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2228 {
2229 if (status & STAT_FEINT)
2230 IaFrontEndIntr(iadev);
2231 }
2232 }
2233 return IRQ_RETVAL(handled);
2234}
2235
2236
2237
2238/*----------------------------- entries --------------------------------*/
2239static int get_esi(struct atm_dev *dev)
2240{
2241 IADEV *iadev;
2242 int i;
2243 u32 mac1;
2244 u16 mac2;
2245
2246 iadev = INPH_IA_DEV(dev);
2247 mac1 = cpu_to_be32(le32_to_cpu(readl(
2248 iadev->reg+IPHASE5575_MAC1)));
2249 mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2250 IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2251 for (i=0; i<MAC1_LEN; i++)
2252 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2253
2254 for (i=0; i<MAC2_LEN; i++)
2255 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2256 return 0;
2257}
2258
2259static int reset_sar(struct atm_dev *dev)
2260{
2261 IADEV *iadev;
2262 int i, error = 1;
2263 unsigned int pci[64];
2264
2265 iadev = INPH_IA_DEV(dev);
2266 for(i=0; i<64; i++)
2267 if ((error = pci_read_config_dword(iadev->pci,
2268 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2269 return error;
2270 writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2271 for(i=0; i<64; i++)
2272 if ((error = pci_write_config_dword(iadev->pci,
2273 i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2274 return error;
2275 udelay(5);
2276 return 0;
2277}
2278
2279
Chas Williams249c14b2006-06-29 12:35:32 -0700[diff] [blame]2280static int __devinit ia_init(struct atm_dev *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2281{
2282 IADEV *iadev;
2283 unsigned long real_base;
2284 void __iomem *base;
2285 unsigned short command;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2286 int error, i;
2287
2288 /* The device has been identified and registered. Now we read
2289 necessary configuration info like memory base address,
2290 interrupt number etc */
2291
2292 IF_INIT(printk(">ia_init\n");)
2293 dev->ci_range.vpi_bits = 0;
2294 dev->ci_range.vci_bits = NR_VCI_LD;
2295
2296 iadev = INPH_IA_DEV(dev);
2297 real_base = pci_resource_start (iadev->pci, 0);
2298 iadev->irq = iadev->pci->irq;
2299
Auke Kok44c10132007-06-08 15:46:36 -0700[diff] [blame]2300 error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2301 if (error) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2302 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2303 dev->number,error);
2304 return -EINVAL;
2305 }
2306 IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
Auke Kok44c10132007-06-08 15:46:36 -0700[diff] [blame]2307 dev->number, iadev->pci->revision, real_base, iadev->irq);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2308
2309 /* find mapping size of board */
2310
2311 iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2312
2313 if (iadev->pci_map_size == 0x100000){
2314 iadev->num_vc = 4096;
2315 dev->ci_range.vci_bits = NR_VCI_4K_LD;
2316 iadev->memSize = 4;
2317 }
2318 else if (iadev->pci_map_size == 0x40000) {
2319 iadev->num_vc = 1024;
2320 iadev->memSize = 1;
2321 }
2322 else {
2323 printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2324 return -EINVAL;
2325 }
2326 IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2327
2328 /* enable bus mastering */
2329 pci_set_master(iadev->pci);
2330
2331 /*
2332 * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2333 */
2334 udelay(10);
2335
2336 /* mapping the physical address to a virtual address in address space */
2337 base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
2338
2339 if (!base)
2340 {
2341 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2342 dev->number);
2343 return error;
2344 }
2345 IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
Auke Kok44c10132007-06-08 15:46:36 -0700[diff] [blame]2346 dev->number, iadev->pci->revision, base, iadev->irq);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2347
2348 /* filling the iphase dev structure */
2349 iadev->mem = iadev->pci_map_size /2;
2350 iadev->real_base = real_base;
2351 iadev->base = base;
2352
2353 /* Bus Interface Control Registers */
2354 iadev->reg = base + REG_BASE;
2355 /* Segmentation Control Registers */
2356 iadev->seg_reg = base + SEG_BASE;
2357 /* Reassembly Control Registers */
2358 iadev->reass_reg = base + REASS_BASE;
2359 /* Front end/ DMA control registers */
2360 iadev->phy = base + PHY_BASE;
2361 iadev->dma = base + PHY_BASE;
2362 /* RAM - Segmentation RAm and Reassembly RAM */
2363 iadev->ram = base + ACTUAL_RAM_BASE;
2364 iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2365 iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2366
2367 /* lets print out the above */
2368 IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2369 iadev->reg,iadev->seg_reg,iadev->reass_reg,
2370 iadev->phy, iadev->ram, iadev->seg_ram,
2371 iadev->reass_ram);)
2372
2373 /* lets try reading the MAC address */
2374 error = get_esi(dev);
2375 if (error) {
2376 iounmap(iadev->base);
2377 return error;
2378 }
2379 printk("IA: ");
2380 for (i=0; i < ESI_LEN; i++)
2381 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2382 printk("\n");
2383
2384 /* reset SAR */
2385 if (reset_sar(dev)) {
2386 iounmap(iadev->base);
2387 printk("IA: reset SAR fail, please try again\n");
2388 return 1;
2389 }
2390 return 0;
2391}
2392
2393static void ia_update_stats(IADEV *iadev) {
2394 if (!iadev->carrier_detect)
2395 return;
2396 iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2397 iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2398 iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2399 iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2400 iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2401 iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2402 return;
2403}
2404
2405static void ia_led_timer(unsigned long arg) {
2406 unsigned long flags;
2407 static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2408 u_char i;
2409 static u32 ctrl_reg;
2410 for (i = 0; i < iadev_count; i++) {
2411 if (ia_dev[i]) {
2412 ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2413 if (blinking[i] == 0) {
2414 blinking[i]++;
2415 ctrl_reg &= (~CTRL_LED);
2416 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2417 ia_update_stats(ia_dev[i]);
2418 }
2419 else {
2420 blinking[i] = 0;
2421 ctrl_reg |= CTRL_LED;
2422 writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2423 spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2424 if (ia_dev[i]->close_pending)
2425 wake_up(&ia_dev[i]->close_wait);
2426 ia_tx_poll(ia_dev[i]);
2427 spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2428 }
2429 }
2430 }
2431 mod_timer(&ia_timer, jiffies + HZ / 4);
2432 return;
2433}
2434
2435static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2436 unsigned long addr)
2437{
2438 writel(value, INPH_IA_DEV(dev)->phy+addr);
2439}
2440
2441static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2442{
2443 return readl(INPH_IA_DEV(dev)->phy+addr);
2444}
2445
2446static void ia_free_tx(IADEV *iadev)
2447{
2448 int i;
2449
2450 kfree(iadev->desc_tbl);
2451 for (i = 0; i < iadev->num_vc; i++)
2452 kfree(iadev->testTable[i]);
2453 kfree(iadev->testTable);
2454 for (i = 0; i < iadev->num_tx_desc; i++) {
2455 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2456
2457 pci_unmap_single(iadev->pci, desc->dma_addr,
2458 sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2459 kfree(desc->cpcs);
2460 }
2461 kfree(iadev->tx_buf);
2462 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2463 iadev->tx_dle_dma);
2464}
2465
2466static void ia_free_rx(IADEV *iadev)
2467{
2468 kfree(iadev->rx_open);
2469 pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2470 iadev->rx_dle_dma);
2471}
2472
Chas Williams249c14b2006-06-29 12:35:32 -0700[diff] [blame]2473static int __devinit ia_start(struct atm_dev *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2474{
2475 IADEV *iadev;
2476 int error;
2477 unsigned char phy;
2478 u32 ctrl_reg;
2479 IF_EVENT(printk(">ia_start\n");)
2480 iadev = INPH_IA_DEV(dev);
Thomas Gleixnerdace1452006-07-01 19:29:38 -0700[diff] [blame]2481 if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2482 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2483 dev->number, iadev->irq);
2484 error = -EAGAIN;
2485 goto err_out;
2486 }
2487 /* @@@ should release IRQ on error */
2488 /* enabling memory + master */
2489 if ((error = pci_write_config_word(iadev->pci,
2490 PCI_COMMAND,
2491 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2492 {
2493 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2494 "master (0x%x)\n",dev->number, error);
2495 error = -EIO;
2496 goto err_free_irq;
2497 }
2498 udelay(10);
2499
2500 /* Maybe we should reset the front end, initialize Bus Interface Control
2501 Registers and see. */
2502
2503 IF_INIT(printk("Bus ctrl reg: %08x\n",
2504 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2505 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2506 ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2507 | CTRL_B8
2508 | CTRL_B16
2509 | CTRL_B32
2510 | CTRL_B48
2511 | CTRL_B64
2512 | CTRL_B128
2513 | CTRL_ERRMASK
2514 | CTRL_DLETMASK /* shud be removed l8r */
2515 | CTRL_DLERMASK
2516 | CTRL_SEGMASK
2517 | CTRL_REASSMASK
2518 | CTRL_FEMASK
2519 | CTRL_CSPREEMPT;
2520
2521 writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2522
2523 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2524 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2525 printk("Bus status reg after init: %08x\n",
2526 readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2527
2528 ia_hw_type(iadev);
2529 error = tx_init(dev);
2530 if (error)
2531 goto err_free_irq;
2532 error = rx_init(dev);
2533 if (error)
2534 goto err_free_tx;
2535
2536 ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2537 writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2538 IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2539 readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2540 phy = 0; /* resolve compiler complaint */
2541 IF_INIT (
2542 if ((phy=ia_phy_get(dev,0)) == 0x30)
2543 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2544 else
2545 printk("IA: utopia,rev.%0x\n",phy);)
2546
2547 if (iadev->phy_type & FE_25MBIT_PHY)
2548 ia_mb25_init(iadev);
2549 else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2550 ia_suni_pm7345_init(iadev);
2551 else {
2552 error = suni_init(dev);
2553 if (error)
2554 goto err_free_rx;
Jorge Boncompte [DTI2]d6c1d702008-06-16 17:16:35 -0700[diff] [blame]2555 if (dev->phy->start) {
2556 error = dev->phy->start(dev);
2557 if (error)
2558 goto err_free_rx;
2559 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2560 /* Get iadev->carrier_detect status */
2561 IaFrontEndIntr(iadev);
2562 }
2563 return 0;
2564
2565err_free_rx:
2566 ia_free_rx(iadev);
2567err_free_tx:
2568 ia_free_tx(iadev);
2569err_free_irq:
2570 free_irq(iadev->irq, dev);
2571err_out:
2572 return error;
2573}
2574
2575static void ia_close(struct atm_vcc *vcc)
2576{
2577 DEFINE_WAIT(wait);
2578 u16 *vc_table;
2579 IADEV *iadev;
2580 struct ia_vcc *ia_vcc;
2581 struct sk_buff *skb = NULL;
2582 struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2583 unsigned long closetime, flags;
2584
2585 iadev = INPH_IA_DEV(vcc->dev);
2586 ia_vcc = INPH_IA_VCC(vcc);
2587 if (!ia_vcc) return;
2588
2589 IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n",
2590 ia_vcc->vc_desc_cnt,vcc->vci);)
2591 clear_bit(ATM_VF_READY,&vcc->flags);
2592 skb_queue_head_init (&tmp_tx_backlog);
2593 skb_queue_head_init (&tmp_vcc_backlog);
2594 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2595 iadev->close_pending++;
2596 prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2597 schedule_timeout(50);
2598 finish_wait(&iadev->timeout_wait, &wait);
2599 spin_lock_irqsave(&iadev->tx_lock, flags);
2600 while((skb = skb_dequeue(&iadev->tx_backlog))) {
2601 if (ATM_SKB(skb)->vcc == vcc){
2602 if (vcc->pop) vcc->pop(vcc, skb);
2603 else dev_kfree_skb_any(skb);
2604 }
2605 else
2606 skb_queue_tail(&tmp_tx_backlog, skb);
2607 }
2608 while((skb = skb_dequeue(&tmp_tx_backlog)))
2609 skb_queue_tail(&iadev->tx_backlog, skb);
2610 IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2611 closetime = 300000 / ia_vcc->pcr;
2612 if (closetime == 0)
2613 closetime = 1;
2614 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2615 wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2616 spin_lock_irqsave(&iadev->tx_lock, flags);
2617 iadev->close_pending--;
2618 iadev->testTable[vcc->vci]->lastTime = 0;
2619 iadev->testTable[vcc->vci]->fract = 0;
2620 iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2621 if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2622 if (vcc->qos.txtp.min_pcr > 0)
2623 iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2624 }
2625 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2626 ia_vcc = INPH_IA_VCC(vcc);
2627 iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2628 ia_cbrVc_close (vcc);
2629 }
2630 spin_unlock_irqrestore(&iadev->tx_lock, flags);
2631 }
2632
2633 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2634 // reset reass table
2635 vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2636 vc_table += vcc->vci;
2637 *vc_table = NO_AAL5_PKT;
2638 // reset vc table
2639 vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2640 vc_table += vcc->vci;
2641 *vc_table = (vcc->vci << 6) | 15;
2642 if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2643 struct abr_vc_table __iomem *abr_vc_table =
2644 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2645 abr_vc_table += vcc->vci;
2646 abr_vc_table->rdf = 0x0003;
2647 abr_vc_table->air = 0x5eb1;
2648 }
2649 // Drain the packets
2650 rx_dle_intr(vcc->dev);
2651 iadev->rx_open[vcc->vci] = NULL;
2652 }
2653 kfree(INPH_IA_VCC(vcc));
2654 ia_vcc = NULL;
2655 vcc->dev_data = NULL;
2656 clear_bit(ATM_VF_ADDR,&vcc->flags);
2657 return;
2658}
2659
2660static int ia_open(struct atm_vcc *vcc)
2661{
2662 IADEV *iadev;
2663 struct ia_vcc *ia_vcc;
2664 int error;
2665 if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2666 {
2667 IF_EVENT(printk("ia: not partially allocated resources\n");)
2668 vcc->dev_data = NULL;
2669 }
2670 iadev = INPH_IA_DEV(vcc->dev);
2671 if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2672 {
2673 IF_EVENT(printk("iphase open: unspec part\n");)
2674 set_bit(ATM_VF_ADDR,&vcc->flags);
2675 }
2676 if (vcc->qos.aal != ATM_AAL5)
2677 return -EINVAL;
2678 IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2679 vcc->dev->number, vcc->vpi, vcc->vci);)
2680
2681 /* Device dependent initialization */
2682 ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2683 if (!ia_vcc) return -ENOMEM;
2684 vcc->dev_data = ia_vcc;
2685
2686 if ((error = open_rx(vcc)))
2687 {
2688 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2689 ia_close(vcc);
2690 return error;
2691 }
2692
2693 if ((error = open_tx(vcc)))
2694 {
2695 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2696 ia_close(vcc);
2697 return error;
2698 }
2699
2700 set_bit(ATM_VF_READY,&vcc->flags);
2701
2702#if 0
2703 {
2704 static u8 first = 1;
2705 if (first) {
2706 ia_timer.expires = jiffies + 3*HZ;
2707 add_timer(&ia_timer);
2708 first = 0;
2709 }
2710 }
2711#endif
2712 IF_EVENT(printk("ia open returning\n");)
2713 return 0;
2714}
2715
2716static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2717{
2718 IF_EVENT(printk(">ia_change_qos\n");)
2719 return 0;
2720}
2721
2722static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2723{
2724 IA_CMDBUF ia_cmds;
2725 IADEV *iadev;
2726 int i, board;
2727 u16 __user *tmps;
2728 IF_EVENT(printk(">ia_ioctl\n");)
2729 if (cmd != IA_CMD) {
2730 if (!dev->phy->ioctl) return -EINVAL;
2731 return dev->phy->ioctl(dev,cmd,arg);
2732 }
2733 if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2734 board = ia_cmds.status;
2735 if ((board < 0) || (board > iadev_count))
2736 board = 0;
2737 iadev = ia_dev[board];
2738 switch (ia_cmds.cmd) {
2739 case MEMDUMP:
2740 {
2741 switch (ia_cmds.sub_cmd) {
2742 case MEMDUMP_DEV:
2743 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2744 if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2745 return -EFAULT;
2746 ia_cmds.status = 0;
2747 break;
2748 case MEMDUMP_SEGREG:
2749 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2750 tmps = (u16 __user *)ia_cmds.buf;
2751 for(i=0; i<0x80; i+=2, tmps++)
2752 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2753 ia_cmds.status = 0;
2754 ia_cmds.len = 0x80;
2755 break;
2756 case MEMDUMP_REASSREG:
2757 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2758 tmps = (u16 __user *)ia_cmds.buf;
2759 for(i=0; i<0x80; i+=2, tmps++)
2760 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2761 ia_cmds.status = 0;
2762 ia_cmds.len = 0x80;
2763 break;
2764 case MEMDUMP_FFL:
2765 {
2766 ia_regs_t *regs_local;
2767 ffredn_t *ffL;
2768 rfredn_t *rfL;
2769
2770 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2771 regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2772 if (!regs_local) return -ENOMEM;
2773 ffL = &regs_local->ffredn;
2774 rfL = &regs_local->rfredn;
2775 /* Copy real rfred registers into the local copy */
2776 for (i=0; i<(sizeof (rfredn_t))/4; i++)
2777 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2778 /* Copy real ffred registers into the local copy */
2779 for (i=0; i<(sizeof (ffredn_t))/4; i++)
2780 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2781
2782 if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2783 kfree(regs_local);
2784 return -EFAULT;
2785 }
2786 kfree(regs_local);
2787 printk("Board %d registers dumped\n", board);
2788 ia_cmds.status = 0;
2789 }
2790 break;
2791 case READ_REG:
2792 {
2793 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2794 desc_dbg(iadev);
2795 ia_cmds.status = 0;
2796 }
2797 break;
2798 case 0x6:
2799 {
2800 ia_cmds.status = 0;
2801 printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2802 printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2803 }
2804 break;
2805 case 0x8:
2806 {
2807 struct k_sonet_stats *stats;
2808 stats = &PRIV(_ia_dev[board])->sonet_stats;
2809 printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2810 printk("line_bip : %d\n", atomic_read(&stats->line_bip));
2811 printk("path_bip : %d\n", atomic_read(&stats->path_bip));
2812 printk("line_febe : %d\n", atomic_read(&stats->line_febe));
2813 printk("path_febe : %d\n", atomic_read(&stats->path_febe));
2814 printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
2815 printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2816 printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
2817 printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
2818 }
2819 ia_cmds.status = 0;
2820 break;
2821 case 0x9:
2822 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2823 for (i = 1; i <= iadev->num_rx_desc; i++)
2824 free_desc(_ia_dev[board], i);
2825 writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2826 iadev->reass_reg+REASS_MASK_REG);
2827 iadev->rxing = 1;
2828
2829 ia_cmds.status = 0;
2830 break;
2831
2832 case 0xb:
2833 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2834 IaFrontEndIntr(iadev);
2835 break;
2836 case 0xa:
2837 if (!capable(CAP_NET_ADMIN)) return -EPERM;
2838 {
2839 ia_cmds.status = 0;
2840 IADebugFlag = ia_cmds.maddr;
2841 printk("New debug option loaded\n");
2842 }
2843 break;
2844 default:
2845 ia_cmds.status = 0;
2846 break;
2847 }
2848 }
2849 break;
2850 default:
2851 break;
2852
2853 }
2854 return 0;
2855}
2856
2857static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2858 void __user *optval, int optlen)
2859{
2860 IF_EVENT(printk(">ia_getsockopt\n");)
2861 return -EINVAL;
2862}
2863
2864static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700[diff] [blame]2865 void __user *optval, unsigned int optlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2866{
2867 IF_EVENT(printk(">ia_setsockopt\n");)
2868 return -EINVAL;
2869}
2870
2871static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2872 IADEV *iadev;
2873 struct dle *wr_ptr;
2874 struct tx_buf_desc __iomem *buf_desc_ptr;
2875 int desc;
2876 int comp_code;
2877 int total_len;
2878 struct cpcs_trailer *trailer;
2879 struct ia_vcc *iavcc;
2880
2881 iadev = INPH_IA_DEV(vcc->dev);
2882 iavcc = INPH_IA_VCC(vcc);
2883 if (!iavcc->txing) {
2884 printk("discard packet on closed VC\n");
2885 if (vcc->pop)
2886 vcc->pop(vcc, skb);
2887 else
2888 dev_kfree_skb_any(skb);
2889 return 0;
2890 }
2891
2892 if (skb->len > iadev->tx_buf_sz - 8) {
2893 printk("Transmit size over tx buffer size\n");
2894 if (vcc->pop)
2895 vcc->pop(vcc, skb);
2896 else
2897 dev_kfree_skb_any(skb);
2898 return 0;
2899 }
Alan Cox97928f72008-06-17 16:21:18 -0700[diff] [blame]2900 if ((unsigned long)skb->data & 3) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2901 printk("Misaligned SKB\n");
2902 if (vcc->pop)
2903 vcc->pop(vcc, skb);
2904 else
2905 dev_kfree_skb_any(skb);
2906 return 0;
2907 }
2908 /* Get a descriptor number from our free descriptor queue
2909 We get the descr number from the TCQ now, since I am using
2910 the TCQ as a free buffer queue. Initially TCQ will be
2911 initialized with all the descriptors and is hence, full.
2912 */
2913 desc = get_desc (iadev, iavcc);
2914 if (desc == 0xffff)
2915 return 1;
2916 comp_code = desc >> 13;
2917 desc &= 0x1fff;
2918
2919 if ((desc == 0) || (desc > iadev->num_tx_desc))
2920 {
2921 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2922 atomic_inc(&vcc->stats->tx);
2923 if (vcc->pop)
2924 vcc->pop(vcc, skb);
2925 else
2926 dev_kfree_skb_any(skb);
2927 return 0; /* return SUCCESS */
2928 }
2929
2930 if (comp_code)
2931 {
2932 IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2933 desc, comp_code);)
2934 }
2935
2936 /* remember the desc and vcc mapping */
2937 iavcc->vc_desc_cnt++;
2938 iadev->desc_tbl[desc-1].iavcc = iavcc;
2939 iadev->desc_tbl[desc-1].txskb = skb;
2940 IA_SKB_STATE(skb) = 0;
2941
2942 iadev->ffL.tcq_rd += 2;
2943 if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2944 iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
2945 writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2946
2947 /* Put the descriptor number in the packet ready queue
2948 and put the updated write pointer in the DLE field
2949 */
2950 *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2951
2952 iadev->ffL.prq_wr += 2;
2953 if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2954 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2955
2956 /* Figure out the exact length of the packet and padding required to
2957 make it aligned on a 48 byte boundary. */
2958 total_len = skb->len + sizeof(struct cpcs_trailer);
2959 total_len = ((total_len + 47) / 48) * 48;
2960 IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2961
2962 /* Put the packet in a tx buffer */
2963 trailer = iadev->tx_buf[desc-1].cpcs;
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]2964 IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n",
2965 skb, skb->data, skb->len, desc);)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2966 trailer->control = 0;
2967 /*big endian*/
2968 trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2969 trailer->crc32 = 0; /* not needed - dummy bytes */
2970
2971 /* Display the packet */
2972 IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2973 skb->len, tcnter++);
2974 xdump(skb->data, skb->len, "TX: ");
2975 printk("\n");)
2976
2977 /* Build the buffer descriptor */
2978 buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
2979 buf_desc_ptr += desc; /* points to the corresponding entry */
2980 buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
2981 /* Huh ? p.115 of users guide describes this as a read-only register */
2982 writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2983 buf_desc_ptr->vc_index = vcc->vci;
2984 buf_desc_ptr->bytes = total_len;
2985
2986 if (vcc->qos.txtp.traffic_class == ATM_ABR)
2987 clear_lockup (vcc, iadev);
2988
2989 /* Build the DLE structure */
2990 wr_ptr = iadev->tx_dle_q.write;
2991 memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
2992 wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
2993 skb->len, PCI_DMA_TODEVICE);
2994 wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
2995 buf_desc_ptr->buf_start_lo;
Wu Fengguangb67445f2009-01-07 18:09:10 -0800[diff] [blame]2996 /* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2997 wr_ptr->bytes = skb->len;
2998
2999 /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3000 if ((wr_ptr->bytes >> 2) == 0xb)
3001 wr_ptr->bytes = 0x30;
3002
3003 wr_ptr->mode = TX_DLE_PSI;
3004 wr_ptr->prq_wr_ptr_data = 0;
3005
3006 /* end is not to be used for the DLE q */
3007 if (++wr_ptr == iadev->tx_dle_q.end)
3008 wr_ptr = iadev->tx_dle_q.start;
3009
3010 /* Build trailer dle */
3011 wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3012 wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3013 buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3014
3015 wr_ptr->bytes = sizeof(struct cpcs_trailer);
3016 wr_ptr->mode = DMA_INT_ENABLE;
3017 wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3018
3019 /* end is not to be used for the DLE q */
3020 if (++wr_ptr == iadev->tx_dle_q.end)
3021 wr_ptr = iadev->tx_dle_q.start;
3022
3023 iadev->tx_dle_q.write = wr_ptr;
3024 ATM_DESC(skb) = vcc->vci;
3025 skb_queue_tail(&iadev->tx_dma_q, skb);
3026
3027 atomic_inc(&vcc->stats->tx);
3028 iadev->tx_pkt_cnt++;
3029 /* Increment transaction counter */
3030 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3031
3032#if 0
3033 /* add flow control logic */
3034 if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3035 if (iavcc->vc_desc_cnt > 10) {
3036 vcc->tx_quota = vcc->tx_quota * 3 / 4;
3037 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3038 iavcc->flow_inc = -1;
3039 iavcc->saved_tx_quota = vcc->tx_quota;
3040 } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3041 // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3042 printk("Tx2: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3043 iavcc->flow_inc = 0;
3044 }
3045 }
3046#endif
3047 IF_TX(printk("ia send done\n");)
3048 return 0;
3049}
3050
3051static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3052{
3053 IADEV *iadev;
3054 struct ia_vcc *iavcc;
3055 unsigned long flags;
3056
3057 iadev = INPH_IA_DEV(vcc->dev);
3058 iavcc = INPH_IA_VCC(vcc);
3059 if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3060 {
3061 if (!skb)
3062 printk(KERN_CRIT "null skb in ia_send\n");
3063 else dev_kfree_skb_any(skb);
3064 return -EINVAL;
3065 }
3066 spin_lock_irqsave(&iadev->tx_lock, flags);
3067 if (!test_bit(ATM_VF_READY,&vcc->flags)){
3068 dev_kfree_skb_any(skb);
3069 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3070 return -EINVAL;
3071 }
3072 ATM_SKB(skb)->vcc = vcc;
3073
3074 if (skb_peek(&iadev->tx_backlog)) {
3075 skb_queue_tail(&iadev->tx_backlog, skb);
3076 }
3077 else {
3078 if (ia_pkt_tx (vcc, skb)) {
3079 skb_queue_tail(&iadev->tx_backlog, skb);
3080 }
3081 }
3082 spin_unlock_irqrestore(&iadev->tx_lock, flags);
3083 return 0;
3084
3085}
3086
3087static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3088{
3089 int left = *pos, n;
3090 char *tmpPtr;
3091 IADEV *iadev = INPH_IA_DEV(dev);
3092 if(!left--) {
3093 if (iadev->phy_type == FE_25MBIT_PHY) {
3094 n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n");
3095 return n;
3096 }
3097 if (iadev->phy_type == FE_DS3_PHY)
3098 n = sprintf(page, " Board Type : Iphase-ATM-DS3");
3099 else if (iadev->phy_type == FE_E3_PHY)
3100 n = sprintf(page, " Board Type : Iphase-ATM-E3");
3101 else if (iadev->phy_type == FE_UTP_OPTION)
3102 n = sprintf(page, " Board Type : Iphase-ATM-UTP155");
3103 else
3104 n = sprintf(page, " Board Type : Iphase-ATM-OC3");
3105 tmpPtr = page + n;
3106 if (iadev->pci_map_size == 0x40000)
3107 n += sprintf(tmpPtr, "-1KVC-");
3108 else
3109 n += sprintf(tmpPtr, "-4KVC-");
3110 tmpPtr = page + n;
3111 if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3112 n += sprintf(tmpPtr, "1M \n");
3113 else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3114 n += sprintf(tmpPtr, "512K\n");
3115 else
3116 n += sprintf(tmpPtr, "128K\n");
3117 return n;
3118 }
3119 if (!left) {
3120 return sprintf(page, " Number of Tx Buffer: %u\n"
3121 " Size of Tx Buffer : %u\n"
3122 " Number of Rx Buffer: %u\n"
3123 " Size of Rx Buffer : %u\n"
3124 " Packets Receiverd : %u\n"
3125 " Packets Transmitted: %u\n"
3126 " Cells Received : %u\n"
3127 " Cells Transmitted : %u\n"
3128 " Board Dropped Cells: %u\n"
3129 " Board Dropped Pkts : %u\n",
3130 iadev->num_tx_desc, iadev->tx_buf_sz,
3131 iadev->num_rx_desc, iadev->rx_buf_sz,
3132 iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
3133 iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3134 iadev->drop_rxcell, iadev->drop_rxpkt);
3135 }
3136 return 0;
3137}
3138
3139static const struct atmdev_ops ops = {
3140 .open = ia_open,
3141 .close = ia_close,
3142 .ioctl = ia_ioctl,
3143 .getsockopt = ia_getsockopt,
3144 .setsockopt = ia_setsockopt,
3145 .send = ia_send,
3146 .phy_put = ia_phy_put,
3147 .phy_get = ia_phy_get,
3148 .change_qos = ia_change_qos,
3149 .proc_read = ia_proc_read,
3150 .owner = THIS_MODULE,
3151};
3152
3153static int __devinit ia_init_one(struct pci_dev *pdev,
3154 const struct pci_device_id *ent)
3155{
3156 struct atm_dev *dev;
3157 IADEV *iadev;
3158 unsigned long flags;
3159 int ret;
3160
Mariusz Kozlowskif7141762007-08-10 15:26:18 -0700[diff] [blame]3161 iadev = kzalloc(sizeof(*iadev), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3162 if (!iadev) {
3163 ret = -ENOMEM;
3164 goto err_out;
3165 }
Mariusz Kozlowskif7141762007-08-10 15:26:18 -0700[diff] [blame]3166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3167 iadev->pci = pdev;
3168
3169 IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3170 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3171 if (pci_enable_device(pdev)) {
3172 ret = -ENODEV;
3173 goto err_out_free_iadev;
3174 }
3175 dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
3176 if (!dev) {
3177 ret = -ENOMEM;
3178 goto err_out_disable_dev;
3179 }
3180 dev->dev_data = iadev;
3181 IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
David Howells849e8ca2008-07-30 16:33:05 -0700[diff] [blame]3182 IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n", dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3183 iadev->LineRate);)
3184
Jorge Boncompte [DTI2]c0ed0b62008-06-16 17:16:04 -0700[diff] [blame]3185 pci_set_drvdata(pdev, dev);
3186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3187 ia_dev[iadev_count] = iadev;
3188 _ia_dev[iadev_count] = dev;
3189 iadev_count++;
3190 spin_lock_init(&iadev->misc_lock);
3191 /* First fixes first. I don't want to think about this now. */
3192 spin_lock_irqsave(&iadev->misc_lock, flags);
3193 if (ia_init(dev) || ia_start(dev)) {
3194 IF_INIT(printk("IA register failed!\n");)
3195 iadev_count--;
3196 ia_dev[iadev_count] = NULL;
3197 _ia_dev[iadev_count] = NULL;
3198 spin_unlock_irqrestore(&iadev->misc_lock, flags);
3199 ret = -EINVAL;
3200 goto err_out_deregister_dev;
3201 }
3202 spin_unlock_irqrestore(&iadev->misc_lock, flags);
3203 IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3204
3205 iadev->next_board = ia_boards;
3206 ia_boards = dev;
3207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3208 return 0;
3209
3210err_out_deregister_dev:
3211 atm_dev_deregister(dev);
3212err_out_disable_dev:
3213 pci_disable_device(pdev);
3214err_out_free_iadev:
3215 kfree(iadev);
3216err_out:
3217 return ret;
3218}
3219
3220static void __devexit ia_remove_one(struct pci_dev *pdev)
3221{
3222 struct atm_dev *dev = pci_get_drvdata(pdev);
3223 IADEV *iadev = INPH_IA_DEV(dev);
3224
Jorge Boncompte [DTI2]d6c1d702008-06-16 17:16:35 -0700[diff] [blame]3225 /* Disable phy interrupts */
3226 ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
3227 SUNI_RSOP_CIE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3228 udelay(1);
3229
Jorge Boncompte [DTI2]d6c1d702008-06-16 17:16:35 -0700[diff] [blame]3230 if (dev->phy && dev->phy->stop)
3231 dev->phy->stop(dev);
3232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3233 /* De-register device */
3234 free_irq(iadev->irq, dev);
3235 iadev_count--;
3236 ia_dev[iadev_count] = NULL;
3237 _ia_dev[iadev_count] = NULL;
3238 IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3239 atm_dev_deregister(dev);
3240
3241 iounmap(iadev->base);
3242 pci_disable_device(pdev);
3243
3244 ia_free_rx(iadev);
3245 ia_free_tx(iadev);
3246
3247 kfree(iadev);
3248}
3249
3250static struct pci_device_id ia_pci_tbl[] = {
3251 { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3252 { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3253 { 0,}
3254};
3255MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3256
3257static struct pci_driver ia_driver = {
3258 .name = DEV_LABEL,
3259 .id_table = ia_pci_tbl,
3260 .probe = ia_init_one,
3261 .remove = __devexit_p(ia_remove_one),
3262};
3263
3264static int __init ia_module_init(void)
3265{
3266 int ret;
3267
3268 ret = pci_register_driver(&ia_driver);
3269 if (ret >= 0) {
3270 ia_timer.expires = jiffies + 3*HZ;
3271 add_timer(&ia_timer);
3272 } else
3273 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3274 return ret;
3275}
3276
3277static void __exit ia_module_exit(void)
3278{
3279 pci_unregister_driver(&ia_driver);
3280
3281 del_timer(&ia_timer);
3282}
3283
3284module_init(ia_module_init);
3285module_exit(ia_module_exit);