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[TCP]: BIC max increment too large
[linux/fpc-iii.git] / drivers / atm / fore200e.c
blob14f6a6201da3c0f29e8203401e49e0fc2858dd28
1 /*
2 $Id: fore200e.c,v 1.5 2000/04/14 10:10:34 davem Exp $
3
4 A FORE Systems 200E-series driver for ATM on Linux.
5 Christophe Lizzi (lizzi@cnam.fr), October 1999-March 2003.
6
7 Based on the PCA-200E driver from Uwe Dannowski (Uwe.Dannowski@inf.tu-dresden.de).
8
9 This driver simultaneously supports PCA-200E and SBA-200E adapters
10 on i386, alpha (untested), powerpc, sparc and sparc64 architectures.
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27
28 #include <linux/config.h>
29 #include <linux/kernel.h>
30 #include <linux/slab.h>
31 #include <linux/init.h>
32 #include <linux/capability.h>
33 #include <linux/sched.h>
34 #include <linux/interrupt.h>
35 #include <linux/bitops.h>
36 #include <linux/pci.h>
37 #include <linux/module.h>
38 #include <linux/atmdev.h>
39 #include <linux/sonet.h>
40 #include <linux/atm_suni.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/delay.h>
43 #include <asm/io.h>
44 #include <asm/string.h>
45 #include <asm/page.h>
46 #include <asm/irq.h>
47 #include <asm/dma.h>
48 #include <asm/byteorder.h>
49 #include <asm/uaccess.h>
50 #include <asm/atomic.h>
51
52 #ifdef CONFIG_ATM_FORE200E_SBA
53 #include <asm/idprom.h>
54 #include <asm/sbus.h>
55 #include <asm/openprom.h>
56 #include <asm/oplib.h>
57 #include <asm/pgtable.h>
58 #endif
59
60 #if defined(CONFIG_ATM_FORE200E_USE_TASKLET) /* defer interrupt work to a tasklet */
61 #define FORE200E_USE_TASKLET
62 #endif
63
64 #if 0 /* enable the debugging code of the buffer supply queues */
65 #define FORE200E_BSQ_DEBUG
66 #endif
67
68 #if 1 /* ensure correct handling of 52-byte AAL0 SDUs expected by atmdump-like apps */
69 #define FORE200E_52BYTE_AAL0_SDU
70 #endif
71
72 #include "fore200e.h"
73 #include "suni.h"
74
75 #define FORE200E_VERSION "0.3e"
76
77 #define FORE200E "fore200e: "
78
79 #if 0 /* override .config */
80 #define CONFIG_ATM_FORE200E_DEBUG 1
81 #endif
82 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
83 #define DPRINTK(level, format, args...) do { if (CONFIG_ATM_FORE200E_DEBUG >= (level)) \
84 printk(FORE200E format, ##args); } while (0)
85 #else
86 #define DPRINTK(level, format, args...) do {} while (0)
87 #endif
88
89
90 #define FORE200E_ALIGN(addr, alignment) \
91 ((((unsigned long)(addr) + (alignment - 1)) & ~(alignment - 1)) - (unsigned long)(addr))
92
93 #define FORE200E_DMA_INDEX(dma_addr, type, index) ((dma_addr) + (index) * sizeof(type))
94
95 #define FORE200E_INDEX(virt_addr, type, index) (&((type *)(virt_addr))[ index ])
96
97 #define FORE200E_NEXT_ENTRY(index, modulo) (index = ++(index) % (modulo))
98
99 #if 1
100 #define ASSERT(expr) if (!(expr)) { \
101 printk(FORE200E "assertion failed! %s[%d]: %s\n", \
102 __FUNCTION__, __LINE__, #expr); \
103 panic(FORE200E "%s", __FUNCTION__); \
104 }
105 #else
106 #define ASSERT(expr) do {} while (0)
107 #endif
108
109
110 static const struct atmdev_ops fore200e_ops;
111 static const struct fore200e_bus fore200e_bus[];
112
113 static LIST_HEAD(fore200e_boards);
114
115
116 MODULE_AUTHOR("Christophe Lizzi - credits to Uwe Dannowski and Heikki Vatiainen");
117 MODULE_DESCRIPTION("FORE Systems 200E-series ATM driver - version " FORE200E_VERSION);
118 MODULE_SUPPORTED_DEVICE("PCA-200E, SBA-200E");
119
120
121 static const int fore200e_rx_buf_nbr[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
122 { BUFFER_S1_NBR, BUFFER_L1_NBR },
123 { BUFFER_S2_NBR, BUFFER_L2_NBR }
124 };
125
126 static const int fore200e_rx_buf_size[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
127 { BUFFER_S1_SIZE, BUFFER_L1_SIZE },
128 { BUFFER_S2_SIZE, BUFFER_L2_SIZE }
129 };
130
131
132 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
133 static const char* fore200e_traffic_class[] = { "NONE", "UBR", "CBR", "VBR", "ABR", "ANY" };
134 #endif
135
136
137 #if 0 /* currently unused */
138 static int
139 fore200e_fore2atm_aal(enum fore200e_aal aal)
140 {
141 switch(aal) {
142 case FORE200E_AAL0: return ATM_AAL0;
143 case FORE200E_AAL34: return ATM_AAL34;
144 case FORE200E_AAL5: return ATM_AAL5;
145 }
146
147 return -EINVAL;
148 }
149 #endif
150
151
152 static enum fore200e_aal
153 fore200e_atm2fore_aal(int aal)
154 {
155 switch(aal) {
156 case ATM_AAL0: return FORE200E_AAL0;
157 case ATM_AAL34: return FORE200E_AAL34;
158 case ATM_AAL1:
159 case ATM_AAL2:
160 case ATM_AAL5: return FORE200E_AAL5;
161 }
162
163 return -EINVAL;
164 }
165
166
167 static char*
168 fore200e_irq_itoa(int irq)
169 {
170 #if defined(__sparc_v9__)
171 return __irq_itoa(irq);
172 #else
173 static char str[8];
174 sprintf(str, "%d", irq);
175 return str;
176 #endif
177 }
178
179
180 static void*
181 fore200e_kmalloc(int size, gfp_t flags)
182 {
183 void *chunk = kzalloc(size, flags);
184
185 if (!chunk)
186 printk(FORE200E "kmalloc() failed, requested size = %d, flags = 0x%x\n", size, flags);
187
188 return chunk;
189 }
190
191
192 static void
193 fore200e_kfree(void* chunk)
194 {
195 kfree(chunk);
196 }
197
198
199 /* allocate and align a chunk of memory intended to hold the data behing exchanged
200 between the driver and the adapter (using streaming DVMA) */
201
202 static int
203 fore200e_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, int size, int alignment, int direction)
204 {
205 unsigned long offset = 0;
206
207 if (alignment <= sizeof(int))
208 alignment = 0;
209
210 chunk->alloc_size = size + alignment;
211 chunk->align_size = size;
212 chunk->direction = direction;
213
214 chunk->alloc_addr = fore200e_kmalloc(chunk->alloc_size, GFP_KERNEL | GFP_DMA);
215 if (chunk->alloc_addr == NULL)
216 return -ENOMEM;
217
218 if (alignment > 0)
219 offset = FORE200E_ALIGN(chunk->alloc_addr, alignment);
220
221 chunk->align_addr = chunk->alloc_addr + offset;
222
223 chunk->dma_addr = fore200e->bus->dma_map(fore200e, chunk->align_addr, chunk->align_size, direction);
224
225 return 0;
226 }
227
228
229 /* free a chunk of memory */
230
231 static void
232 fore200e_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
233 {
234 fore200e->bus->dma_unmap(fore200e, chunk->dma_addr, chunk->dma_size, chunk->direction);
235
236 fore200e_kfree(chunk->alloc_addr);
237 }
238
239
240 static void
241 fore200e_spin(int msecs)
242 {
243 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
244 while (time_before(jiffies, timeout));
245 }
246
247
248 static int
249 fore200e_poll(struct fore200e* fore200e, volatile u32* addr, u32 val, int msecs)
250 {
251 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
252 int ok;
253
254 mb();
255 do {
256 if ((ok = (*addr == val)) || (*addr & STATUS_ERROR))
257 break;
258
259 } while (time_before(jiffies, timeout));
260
261 #if 1
262 if (!ok) {
263 printk(FORE200E "cmd polling failed, got status 0x%08x, expected 0x%08x\n",
264 *addr, val);
265 }
266 #endif
267
268 return ok;
269 }
270
271
272 static int
273 fore200e_io_poll(struct fore200e* fore200e, volatile u32 __iomem *addr, u32 val, int msecs)
274 {
275 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
276 int ok;
277
278 do {
279 if ((ok = (fore200e->bus->read(addr) == val)))
280 break;
281
282 } while (time_before(jiffies, timeout));
283
284 #if 1
285 if (!ok) {
286 printk(FORE200E "I/O polling failed, got status 0x%08x, expected 0x%08x\n",
287 fore200e->bus->read(addr), val);
288 }
289 #endif
290
291 return ok;
292 }
293
294
295 static void
296 fore200e_free_rx_buf(struct fore200e* fore200e)
297 {
298 int scheme, magn, nbr;
299 struct buffer* buffer;
300
301 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
302 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
303
304 if ((buffer = fore200e->host_bsq[ scheme ][ magn ].buffer) != NULL) {
305
306 for (nbr = 0; nbr < fore200e_rx_buf_nbr[ scheme ][ magn ]; nbr++) {
307
308 struct chunk* data = &buffer[ nbr ].data;
309
310 if (data->alloc_addr != NULL)
311 fore200e_chunk_free(fore200e, data);
312 }
313 }
314 }
315 }
316 }
317
318
319 static void
320 fore200e_uninit_bs_queue(struct fore200e* fore200e)
321 {
322 int scheme, magn;
323
324 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
325 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
326
327 struct chunk* status = &fore200e->host_bsq[ scheme ][ magn ].status;
328 struct chunk* rbd_block = &fore200e->host_bsq[ scheme ][ magn ].rbd_block;
329
330 if (status->alloc_addr)
331 fore200e->bus->dma_chunk_free(fore200e, status);
332
333 if (rbd_block->alloc_addr)
334 fore200e->bus->dma_chunk_free(fore200e, rbd_block);
335 }
336 }
337 }
338
339
340 static int
341 fore200e_reset(struct fore200e* fore200e, int diag)
342 {
343 int ok;
344
345 fore200e->cp_monitor = fore200e->virt_base + FORE200E_CP_MONITOR_OFFSET;
346
347 fore200e->bus->write(BSTAT_COLD_START, &fore200e->cp_monitor->bstat);
348
349 fore200e->bus->reset(fore200e);
350
351 if (diag) {
352 ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_SELFTEST_OK, 1000);
353 if (ok == 0) {
354
355 printk(FORE200E "device %s self-test failed\n", fore200e->name);
356 return -ENODEV;
357 }
358
359 printk(FORE200E "device %s self-test passed\n", fore200e->name);
360
361 fore200e->state = FORE200E_STATE_RESET;
362 }
363
364 return 0;
365 }
366
367
368 static void
369 fore200e_shutdown(struct fore200e* fore200e)
370 {
371 printk(FORE200E "removing device %s at 0x%lx, IRQ %s\n",
372 fore200e->name, fore200e->phys_base,
373 fore200e_irq_itoa(fore200e->irq));
374
375 if (fore200e->state > FORE200E_STATE_RESET) {
376 /* first, reset the board to prevent further interrupts or data transfers */
377 fore200e_reset(fore200e, 0);
378 }
379
380 /* then, release all allocated resources */
381 switch(fore200e->state) {
382
383 case FORE200E_STATE_COMPLETE:
384 kfree(fore200e->stats);
385
386 case FORE200E_STATE_IRQ:
387 free_irq(fore200e->irq, fore200e->atm_dev);
388
389 case FORE200E_STATE_ALLOC_BUF:
390 fore200e_free_rx_buf(fore200e);
391
392 case FORE200E_STATE_INIT_BSQ:
393 fore200e_uninit_bs_queue(fore200e);
394
395 case FORE200E_STATE_INIT_RXQ:
396 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.status);
397 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.rpd);
398
399 case FORE200E_STATE_INIT_TXQ:
400 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.status);
401 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.tpd);
402
403 case FORE200E_STATE_INIT_CMDQ:
404 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_cmdq.status);
405
406 case FORE200E_STATE_INITIALIZE:
407 /* nothing to do for that state */
408
409 case FORE200E_STATE_START_FW:
410 /* nothing to do for that state */
411
412 case FORE200E_STATE_LOAD_FW:
413 /* nothing to do for that state */
414
415 case FORE200E_STATE_RESET:
416 /* nothing to do for that state */
417
418 case FORE200E_STATE_MAP:
419 fore200e->bus->unmap(fore200e);
420
421 case FORE200E_STATE_CONFIGURE:
422 /* nothing to do for that state */
423
424 case FORE200E_STATE_REGISTER:
425 /* XXX shouldn't we *start* by deregistering the device? */
426 atm_dev_deregister(fore200e->atm_dev);
427
428 case FORE200E_STATE_BLANK:
429 /* nothing to do for that state */
430 break;
431 }
432 }
433
434
435 #ifdef CONFIG_ATM_FORE200E_PCA
436
437 static u32 fore200e_pca_read(volatile u32 __iomem *addr)
438 {
439 /* on big-endian hosts, the board is configured to convert
440 the endianess of slave RAM accesses */
441 return le32_to_cpu(readl(addr));
442 }
443
444
445 static void fore200e_pca_write(u32 val, volatile u32 __iomem *addr)
446 {
447 /* on big-endian hosts, the board is configured to convert
448 the endianess of slave RAM accesses */
449 writel(cpu_to_le32(val), addr);
450 }
451
452
453 static u32
454 fore200e_pca_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
455 {
456 u32 dma_addr = pci_map_single((struct pci_dev*)fore200e->bus_dev, virt_addr, size, direction);
457
458 DPRINTK(3, "PCI DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d, --> dma_addr = 0x%08x\n",
459 virt_addr, size, direction, dma_addr);
460
461 return dma_addr;
462 }
463
464
465 static void
466 fore200e_pca_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
467 {
468 DPRINTK(3, "PCI DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d\n",
469 dma_addr, size, direction);
470
471 pci_unmap_single((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
472 }
473
474
475 static void
476 fore200e_pca_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
477 {
478 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
479
480 pci_dma_sync_single_for_cpu((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
481 }
482
483 static void
484 fore200e_pca_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
485 {
486 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
487
488 pci_dma_sync_single_for_device((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
489 }
490
491
492 /* allocate a DMA consistent chunk of memory intended to act as a communication mechanism
493 (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
494
495 static int
496 fore200e_pca_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
497 int size, int nbr, int alignment)
498 {
499 /* returned chunks are page-aligned */
500 chunk->alloc_size = size * nbr;
501 chunk->alloc_addr = pci_alloc_consistent((struct pci_dev*)fore200e->bus_dev,
502 chunk->alloc_size,
503 &chunk->dma_addr);
504
505 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
506 return -ENOMEM;
507
508 chunk->align_addr = chunk->alloc_addr;
509
510 return 0;
511 }
512
513
514 /* free a DMA consistent chunk of memory */
515
516 static void
517 fore200e_pca_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
518 {
519 pci_free_consistent((struct pci_dev*)fore200e->bus_dev,
520 chunk->alloc_size,
521 chunk->alloc_addr,
522 chunk->dma_addr);
523 }
524
525
526 static int
527 fore200e_pca_irq_check(struct fore200e* fore200e)
528 {
529 /* this is a 1 bit register */
530 int irq_posted = readl(fore200e->regs.pca.psr);
531
532 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG == 2)
533 if (irq_posted && (readl(fore200e->regs.pca.hcr) & PCA200E_HCR_OUTFULL)) {
534 DPRINTK(2,"FIFO OUT full, device %d\n", fore200e->atm_dev->number);
535 }
536 #endif
537
538 return irq_posted;
539 }
540
541
542 static void
543 fore200e_pca_irq_ack(struct fore200e* fore200e)
544 {
545 writel(PCA200E_HCR_CLRINTR, fore200e->regs.pca.hcr);
546 }
547
548
549 static void
550 fore200e_pca_reset(struct fore200e* fore200e)
551 {
552 writel(PCA200E_HCR_RESET, fore200e->regs.pca.hcr);
553 fore200e_spin(10);
554 writel(0, fore200e->regs.pca.hcr);
555 }
556
557
558 static int __init
559 fore200e_pca_map(struct fore200e* fore200e)
560 {
561 DPRINTK(2, "device %s being mapped in memory\n", fore200e->name);
562
563 fore200e->virt_base = ioremap(fore200e->phys_base, PCA200E_IOSPACE_LENGTH);
564
565 if (fore200e->virt_base == NULL) {
566 printk(FORE200E "can't map device %s\n", fore200e->name);
567 return -EFAULT;
568 }
569
570 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
571
572 /* gain access to the PCA specific registers */
573 fore200e->regs.pca.hcr = fore200e->virt_base + PCA200E_HCR_OFFSET;
574 fore200e->regs.pca.imr = fore200e->virt_base + PCA200E_IMR_OFFSET;
575 fore200e->regs.pca.psr = fore200e->virt_base + PCA200E_PSR_OFFSET;
576
577 fore200e->state = FORE200E_STATE_MAP;
578 return 0;
579 }
580
581
582 static void
583 fore200e_pca_unmap(struct fore200e* fore200e)
584 {
585 DPRINTK(2, "device %s being unmapped from memory\n", fore200e->name);
586
587 if (fore200e->virt_base != NULL)
588 iounmap(fore200e->virt_base);
589 }
590
591
592 static int __init
593 fore200e_pca_configure(struct fore200e* fore200e)
594 {
595 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
596 u8 master_ctrl, latency;
597
598 DPRINTK(2, "device %s being configured\n", fore200e->name);
599
600 if ((pci_dev->irq == 0) || (pci_dev->irq == 0xFF)) {
601 printk(FORE200E "incorrect IRQ setting - misconfigured PCI-PCI bridge?\n");
602 return -EIO;
603 }
604
605 pci_read_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, &master_ctrl);
606
607 master_ctrl = master_ctrl
608 #if defined(__BIG_ENDIAN)
609 /* request the PCA board to convert the endianess of slave RAM accesses */
610 | PCA200E_CTRL_CONVERT_ENDIAN
611 #endif
612 #if 0
613 | PCA200E_CTRL_DIS_CACHE_RD
614 | PCA200E_CTRL_DIS_WRT_INVAL
615 | PCA200E_CTRL_ENA_CONT_REQ_MODE
616 | PCA200E_CTRL_2_CACHE_WRT_INVAL
617 #endif
618 | PCA200E_CTRL_LARGE_PCI_BURSTS;
619
620 pci_write_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, master_ctrl);
621
622 /* raise latency from 32 (default) to 192, as this seems to prevent NIC
623 lockups (under heavy rx loads) due to continuous 'FIFO OUT full' condition.
624 this may impact the performances of other PCI devices on the same bus, though */
625 latency = 192;
626 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
627
628 fore200e->state = FORE200E_STATE_CONFIGURE;
629 return 0;
630 }
631
632
633 static int __init
634 fore200e_pca_prom_read(struct fore200e* fore200e, struct prom_data* prom)
635 {
636 struct host_cmdq* cmdq = &fore200e->host_cmdq;
637 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
638 struct prom_opcode opcode;
639 int ok;
640 u32 prom_dma;
641
642 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
643
644 opcode.opcode = OPCODE_GET_PROM;
645 opcode.pad = 0;
646
647 prom_dma = fore200e->bus->dma_map(fore200e, prom, sizeof(struct prom_data), DMA_FROM_DEVICE);
648
649 fore200e->bus->write(prom_dma, &entry->cp_entry->cmd.prom_block.prom_haddr);
650
651 *entry->status = STATUS_PENDING;
652
653 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.prom_block.opcode);
654
655 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
656
657 *entry->status = STATUS_FREE;
658
659 fore200e->bus->dma_unmap(fore200e, prom_dma, sizeof(struct prom_data), DMA_FROM_DEVICE);
660
661 if (ok == 0) {
662 printk(FORE200E "unable to get PROM data from device %s\n", fore200e->name);
663 return -EIO;
664 }
665
666 #if defined(__BIG_ENDIAN)
667
668 #define swap_here(addr) (*((u32*)(addr)) = swab32( *((u32*)(addr)) ))
669
670 /* MAC address is stored as little-endian */
671 swap_here(&prom->mac_addr[0]);
672 swap_here(&prom->mac_addr[4]);
673 #endif
674
675 return 0;
676 }
677
678
679 static int
680 fore200e_pca_proc_read(struct fore200e* fore200e, char *page)
681 {
682 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
683
684 return sprintf(page, " PCI bus/slot/function:\t%d/%d/%d\n",
685 pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
686 }
687
688 #endif /* CONFIG_ATM_FORE200E_PCA */
689
690
691 #ifdef CONFIG_ATM_FORE200E_SBA
692
693 static u32
694 fore200e_sba_read(volatile u32 __iomem *addr)
695 {
696 return sbus_readl(addr);
697 }
698
699
700 static void
701 fore200e_sba_write(u32 val, volatile u32 __iomem *addr)
702 {
703 sbus_writel(val, addr);
704 }
705
706
707 static u32
708 fore200e_sba_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
709 {
710 u32 dma_addr = sbus_map_single((struct sbus_dev*)fore200e->bus_dev, virt_addr, size, direction);
711
712 DPRINTK(3, "SBUS DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d --> dma_addr = 0x%08x\n",
713 virt_addr, size, direction, dma_addr);
714
715 return dma_addr;
716 }
717
718
719 static void
720 fore200e_sba_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
721 {
722 DPRINTK(3, "SBUS DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d,\n",
723 dma_addr, size, direction);
724
725 sbus_unmap_single((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
726 }
727
728
729 static void
730 fore200e_sba_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
731 {
732 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
733
734 sbus_dma_sync_single_for_cpu((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
735 }
736
737 static void
738 fore200e_sba_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
739 {
740 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
741
742 sbus_dma_sync_single_for_device((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
743 }
744
745
746 /* allocate a DVMA consistent chunk of memory intended to act as a communication mechanism
747 (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
748
749 static int
750 fore200e_sba_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
751 int size, int nbr, int alignment)
752 {
753 chunk->alloc_size = chunk->align_size = size * nbr;
754
755 /* returned chunks are page-aligned */
756 chunk->alloc_addr = sbus_alloc_consistent((struct sbus_dev*)fore200e->bus_dev,
757 chunk->alloc_size,
758 &chunk->dma_addr);
759
760 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
761 return -ENOMEM;
762
763 chunk->align_addr = chunk->alloc_addr;
764
765 return 0;
766 }
767
768
769 /* free a DVMA consistent chunk of memory */
770
771 static void
772 fore200e_sba_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
773 {
774 sbus_free_consistent((struct sbus_dev*)fore200e->bus_dev,
775 chunk->alloc_size,
776 chunk->alloc_addr,
777 chunk->dma_addr);
778 }
779
780
781 static void
782 fore200e_sba_irq_enable(struct fore200e* fore200e)
783 {
784 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
785 fore200e->bus->write(hcr | SBA200E_HCR_INTR_ENA, fore200e->regs.sba.hcr);
786 }
787
788
789 static int
790 fore200e_sba_irq_check(struct fore200e* fore200e)
791 {
792 return fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_INTR_REQ;
793 }
794
795
796 static void
797 fore200e_sba_irq_ack(struct fore200e* fore200e)
798 {
799 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
800 fore200e->bus->write(hcr | SBA200E_HCR_INTR_CLR, fore200e->regs.sba.hcr);
801 }
802
803
804 static void
805 fore200e_sba_reset(struct fore200e* fore200e)
806 {
807 fore200e->bus->write(SBA200E_HCR_RESET, fore200e->regs.sba.hcr);
808 fore200e_spin(10);
809 fore200e->bus->write(0, fore200e->regs.sba.hcr);
810 }
811
812
813 static int __init
814 fore200e_sba_map(struct fore200e* fore200e)
815 {
816 struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
817 unsigned int bursts;
818
819 /* gain access to the SBA specific registers */
820 fore200e->regs.sba.hcr = sbus_ioremap(&sbus_dev->resource[0], 0, SBA200E_HCR_LENGTH, "SBA HCR");
821 fore200e->regs.sba.bsr = sbus_ioremap(&sbus_dev->resource[1], 0, SBA200E_BSR_LENGTH, "SBA BSR");
822 fore200e->regs.sba.isr = sbus_ioremap(&sbus_dev->resource[2], 0, SBA200E_ISR_LENGTH, "SBA ISR");
823 fore200e->virt_base = sbus_ioremap(&sbus_dev->resource[3], 0, SBA200E_RAM_LENGTH, "SBA RAM");
824
825 if (fore200e->virt_base == NULL) {
826 printk(FORE200E "unable to map RAM of device %s\n", fore200e->name);
827 return -EFAULT;
828 }
829
830 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
831
832 fore200e->bus->write(0x02, fore200e->regs.sba.isr); /* XXX hardwired interrupt level */
833
834 /* get the supported DVMA burst sizes */
835 bursts = prom_getintdefault(sbus_dev->bus->prom_node, "burst-sizes", 0x00);
836
837 if (sbus_can_dma_64bit(sbus_dev))
838 sbus_set_sbus64(sbus_dev, bursts);
839
840 fore200e->state = FORE200E_STATE_MAP;
841 return 0;
842 }
843
844
845 static void
846 fore200e_sba_unmap(struct fore200e* fore200e)
847 {
848 sbus_iounmap(fore200e->regs.sba.hcr, SBA200E_HCR_LENGTH);
849 sbus_iounmap(fore200e->regs.sba.bsr, SBA200E_BSR_LENGTH);
850 sbus_iounmap(fore200e->regs.sba.isr, SBA200E_ISR_LENGTH);
851 sbus_iounmap(fore200e->virt_base, SBA200E_RAM_LENGTH);
852 }
853
854
855 static int __init
856 fore200e_sba_configure(struct fore200e* fore200e)
857 {
858 fore200e->state = FORE200E_STATE_CONFIGURE;
859 return 0;
860 }
861
862
863 static struct fore200e* __init
864 fore200e_sba_detect(const struct fore200e_bus* bus, int index)
865 {
866 struct fore200e* fore200e;
867 struct sbus_bus* sbus_bus;
868 struct sbus_dev* sbus_dev = NULL;
869
870 unsigned int count = 0;
871
872 for_each_sbus (sbus_bus) {
873 for_each_sbusdev (sbus_dev, sbus_bus) {
874 if (strcmp(sbus_dev->prom_name, SBA200E_PROM_NAME) == 0) {
875 if (count >= index)
876 goto found;
877 count++;
878 }
879 }
880 }
881 return NULL;
882
883 found:
884 if (sbus_dev->num_registers != 4) {
885 printk(FORE200E "this %s device has %d instead of 4 registers\n",
886 bus->model_name, sbus_dev->num_registers);
887 return NULL;
888 }
889
890 fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL);
891 if (fore200e == NULL)
892 return NULL;
893
894 fore200e->bus = bus;
895 fore200e->bus_dev = sbus_dev;
896 fore200e->irq = sbus_dev->irqs[ 0 ];
897
898 fore200e->phys_base = (unsigned long)sbus_dev;
899
900 sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
901
902 return fore200e;
903 }
904
905
906 static int __init
907 fore200e_sba_prom_read(struct fore200e* fore200e, struct prom_data* prom)
908 {
909 struct sbus_dev* sbus_dev = (struct sbus_dev*) fore200e->bus_dev;
910 int len;
911
912 len = prom_getproperty(sbus_dev->prom_node, "macaddrlo2", &prom->mac_addr[ 4 ], 4);
913 if (len < 0)
914 return -EBUSY;
915
916 len = prom_getproperty(sbus_dev->prom_node, "macaddrhi4", &prom->mac_addr[ 2 ], 4);
917 if (len < 0)
918 return -EBUSY;
919
920 prom_getproperty(sbus_dev->prom_node, "serialnumber",
921 (char*)&prom->serial_number, sizeof(prom->serial_number));
922
923 prom_getproperty(sbus_dev->prom_node, "promversion",
924 (char*)&prom->hw_revision, sizeof(prom->hw_revision));
925
926 return 0;
927 }
928
929
930 static int
931 fore200e_sba_proc_read(struct fore200e* fore200e, char *page)
932 {
933 struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
934
935 return sprintf(page, " SBUS slot/device:\t\t%d/'%s'\n", sbus_dev->slot, sbus_dev->prom_name);
936 }
937 #endif /* CONFIG_ATM_FORE200E_SBA */
938
939
940 static void
941 fore200e_tx_irq(struct fore200e* fore200e)
942 {
943 struct host_txq* txq = &fore200e->host_txq;
944 struct host_txq_entry* entry;
945 struct atm_vcc* vcc;
946 struct fore200e_vc_map* vc_map;
947
948 if (fore200e->host_txq.txing == 0)
949 return;
950
951 for (;;) {
952
953 entry = &txq->host_entry[ txq->tail ];
954
955 if ((*entry->status & STATUS_COMPLETE) == 0) {
956 break;
957 }
958
959 DPRINTK(3, "TX COMPLETED: entry = %p [tail = %d], vc_map = %p, skb = %p\n",
960 entry, txq->tail, entry->vc_map, entry->skb);
961
962 /* free copy of misaligned data */
963 kfree(entry->data);
964
965 /* remove DMA mapping */
966 fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,
967 DMA_TO_DEVICE);
968
969 vc_map = entry->vc_map;
970
971 /* vcc closed since the time the entry was submitted for tx? */
972 if ((vc_map->vcc == NULL) ||
973 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
974
975 DPRINTK(1, "no ready vcc found for PDU sent on device %d\n",
976 fore200e->atm_dev->number);
977
978 dev_kfree_skb_any(entry->skb);
979 }
980 else {
981 ASSERT(vc_map->vcc);
982
983 /* vcc closed then immediately re-opened? */
984 if (vc_map->incarn != entry->incarn) {
985
986 /* when a vcc is closed, some PDUs may be still pending in the tx queue.
987 if the same vcc is immediately re-opened, those pending PDUs must
988 not be popped after the completion of their emission, as they refer
989 to the prior incarnation of that vcc. otherwise, sk_atm(vcc)->sk_wmem_alloc
990 would be decremented by the size of the (unrelated) skb, possibly
991 leading to a negative sk->sk_wmem_alloc count, ultimately freezing the vcc.
992 we thus bind the tx entry to the current incarnation of the vcc
993 when the entry is submitted for tx. When the tx later completes,
994 if the incarnation number of the tx entry does not match the one
995 of the vcc, then this implies that the vcc has been closed then re-opened.
996 we thus just drop the skb here. */
997
998 DPRINTK(1, "vcc closed-then-re-opened; dropping PDU sent on device %d\n",
999 fore200e->atm_dev->number);
1000
1001 dev_kfree_skb_any(entry->skb);
1002 }
1003 else {
1004 vcc = vc_map->vcc;
1005 ASSERT(vcc);
1006
1007 /* notify tx completion */
1008 if (vcc->pop) {
1009 vcc->pop(vcc, entry->skb);
1010 }
1011 else {
1012 dev_kfree_skb_any(entry->skb);
1013 }
1014 #if 1
1015 /* race fixed by the above incarnation mechanism, but... */
1016 if (atomic_read(&sk_atm(vcc)->sk_wmem_alloc) < 0) {
1017 atomic_set(&sk_atm(vcc)->sk_wmem_alloc, 0);
1018 }
1019 #endif
1020 /* check error condition */
1021 if (*entry->status & STATUS_ERROR)
1022 atomic_inc(&vcc->stats->tx_err);
1023 else
1024 atomic_inc(&vcc->stats->tx);
1025 }
1026 }
1027
1028 *entry->status = STATUS_FREE;
1029
1030 fore200e->host_txq.txing--;
1031
1032 FORE200E_NEXT_ENTRY(txq->tail, QUEUE_SIZE_TX);
1033 }
1034 }
1035
1036
1037 #ifdef FORE200E_BSQ_DEBUG
1038 int bsq_audit(int where, struct host_bsq* bsq, int scheme, int magn)
1039 {
1040 struct buffer* buffer;
1041 int count = 0;
1042
1043 buffer = bsq->freebuf;
1044 while (buffer) {
1045
1046 if (buffer->supplied) {
1047 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld supplied but in free list!\n",
1048 where, scheme, magn, buffer->index);
1049 }
1050
1051 if (buffer->magn != magn) {
1052 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected magn = %d\n",
1053 where, scheme, magn, buffer->index, buffer->magn);
1054 }
1055
1056 if (buffer->scheme != scheme) {
1057 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected scheme = %d\n",
1058 where, scheme, magn, buffer->index, buffer->scheme);
1059 }
1060
1061 if ((buffer->index < 0) || (buffer->index >= fore200e_rx_buf_nbr[ scheme ][ magn ])) {
1062 printk(FORE200E "bsq_audit(%d): queue %d.%d, out of range buffer index = %ld !\n",
1063 where, scheme, magn, buffer->index);
1064 }
1065
1066 count++;
1067 buffer = buffer->next;
1068 }
1069
1070 if (count != bsq->freebuf_count) {
1071 printk(FORE200E "bsq_audit(%d): queue %d.%d, %d bufs in free list, but freebuf_count = %d\n",
1072 where, scheme, magn, count, bsq->freebuf_count);
1073 }
1074 return 0;
1075 }
1076 #endif
1077
1078
1079 static void
1080 fore200e_supply(struct fore200e* fore200e)
1081 {
1082 int scheme, magn, i;
1083
1084 struct host_bsq* bsq;
1085 struct host_bsq_entry* entry;
1086 struct buffer* buffer;
1087
1088 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
1089 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
1090
1091 bsq = &fore200e->host_bsq[ scheme ][ magn ];
1092
1093 #ifdef FORE200E_BSQ_DEBUG
1094 bsq_audit(1, bsq, scheme, magn);
1095 #endif
1096 while (bsq->freebuf_count >= RBD_BLK_SIZE) {
1097
1098 DPRINTK(2, "supplying %d rx buffers to queue %d / %d, freebuf_count = %d\n",
1099 RBD_BLK_SIZE, scheme, magn, bsq->freebuf_count);
1100
1101 entry = &bsq->host_entry[ bsq->head ];
1102
1103 for (i = 0; i < RBD_BLK_SIZE; i++) {
1104
1105 /* take the first buffer in the free buffer list */
1106 buffer = bsq->freebuf;
1107 if (!buffer) {
1108 printk(FORE200E "no more free bufs in queue %d.%d, but freebuf_count = %d\n",
1109 scheme, magn, bsq->freebuf_count);
1110 return;
1111 }
1112 bsq->freebuf = buffer->next;
1113
1114 #ifdef FORE200E_BSQ_DEBUG
1115 if (buffer->supplied)
1116 printk(FORE200E "queue %d.%d, buffer %lu already supplied\n",
1117 scheme, magn, buffer->index);
1118 buffer->supplied = 1;
1119 #endif
1120 entry->rbd_block->rbd[ i ].buffer_haddr = buffer->data.dma_addr;
1121 entry->rbd_block->rbd[ i ].handle = FORE200E_BUF2HDL(buffer);
1122 }
1123
1124 FORE200E_NEXT_ENTRY(bsq->head, QUEUE_SIZE_BS);
1125
1126 /* decrease accordingly the number of free rx buffers */
1127 bsq->freebuf_count -= RBD_BLK_SIZE;
1128
1129 *entry->status = STATUS_PENDING;
1130 fore200e->bus->write(entry->rbd_block_dma, &entry->cp_entry->rbd_block_haddr);
1131 }
1132 }
1133 }
1134 }
1135
1136
1137 static int
1138 fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rpd)
1139 {
1140 struct sk_buff* skb;
1141 struct buffer* buffer;
1142 struct fore200e_vcc* fore200e_vcc;
1143 int i, pdu_len = 0;
1144 #ifdef FORE200E_52BYTE_AAL0_SDU
1145 u32 cell_header = 0;
1146 #endif
1147
1148 ASSERT(vcc);
1149
1150 fore200e_vcc = FORE200E_VCC(vcc);
1151 ASSERT(fore200e_vcc);
1152
1153 #ifdef FORE200E_52BYTE_AAL0_SDU
1154 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.rxtp.max_sdu == ATM_AAL0_SDU)) {
1155
1156 cell_header = (rpd->atm_header.gfc << ATM_HDR_GFC_SHIFT) |
1157 (rpd->atm_header.vpi << ATM_HDR_VPI_SHIFT) |
1158 (rpd->atm_header.vci << ATM_HDR_VCI_SHIFT) |
1159 (rpd->atm_header.plt << ATM_HDR_PTI_SHIFT) |
1160 rpd->atm_header.clp;
1161 pdu_len = 4;
1162 }
1163 #endif
1164
1165 /* compute total PDU length */
1166 for (i = 0; i < rpd->nseg; i++)
1167 pdu_len += rpd->rsd[ i ].length;
1168
1169 skb = alloc_skb(pdu_len, GFP_ATOMIC);
1170 if (skb == NULL) {
1171 DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
1172
1173 atomic_inc(&vcc->stats->rx_drop);
1174 return -ENOMEM;
1175 }
1176
1177 __net_timestamp(skb);
1178
1179 #ifdef FORE200E_52BYTE_AAL0_SDU
1180 if (cell_header) {
1181 *((u32*)skb_put(skb, 4)) = cell_header;
1182 }
1183 #endif
1184
1185 /* reassemble segments */
1186 for (i = 0; i < rpd->nseg; i++) {
1187
1188 /* rebuild rx buffer address from rsd handle */
1189 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1190
1191 /* Make device DMA transfer visible to CPU. */
1192 fore200e->bus->dma_sync_for_cpu(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1193
1194 memcpy(skb_put(skb, rpd->rsd[ i ].length), buffer->data.align_addr, rpd->rsd[ i ].length);
1195
1196 /* Now let the device get at it again. */
1197 fore200e->bus->dma_sync_for_device(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1198 }
1199
1200 DPRINTK(3, "rx skb: len = %d, truesize = %d\n", skb->len, skb->truesize);
1201
1202 if (pdu_len < fore200e_vcc->rx_min_pdu)
1203 fore200e_vcc->rx_min_pdu = pdu_len;
1204 if (pdu_len > fore200e_vcc->rx_max_pdu)
1205 fore200e_vcc->rx_max_pdu = pdu_len;
1206 fore200e_vcc->rx_pdu++;
1207
1208 /* push PDU */
1209 if (atm_charge(vcc, skb->truesize) == 0) {
1210
1211 DPRINTK(2, "receive buffers saturated for %d.%d.%d - PDU dropped\n",
1212 vcc->itf, vcc->vpi, vcc->vci);
1213
1214 dev_kfree_skb_any(skb);
1215
1216 atomic_inc(&vcc->stats->rx_drop);
1217 return -ENOMEM;
1218 }
1219
1220 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1221
1222 vcc->push(vcc, skb);
1223 atomic_inc(&vcc->stats->rx);
1224
1225 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1226
1227 return 0;
1228 }
1229
1230
1231 static void
1232 fore200e_collect_rpd(struct fore200e* fore200e, struct rpd* rpd)
1233 {
1234 struct host_bsq* bsq;
1235 struct buffer* buffer;
1236 int i;
1237
1238 for (i = 0; i < rpd->nseg; i++) {
1239
1240 /* rebuild rx buffer address from rsd handle */
1241 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1242
1243 bsq = &fore200e->host_bsq[ buffer->scheme ][ buffer->magn ];
1244
1245 #ifdef FORE200E_BSQ_DEBUG
1246 bsq_audit(2, bsq, buffer->scheme, buffer->magn);
1247
1248 if (buffer->supplied == 0)
1249 printk(FORE200E "queue %d.%d, buffer %ld was not supplied\n",
1250 buffer->scheme, buffer->magn, buffer->index);
1251 buffer->supplied = 0;
1252 #endif
1253
1254 /* re-insert the buffer into the free buffer list */
1255 buffer->next = bsq->freebuf;
1256 bsq->freebuf = buffer;
1257
1258 /* then increment the number of free rx buffers */
1259 bsq->freebuf_count++;
1260 }
1261 }
1262
1263
1264 static void
1265 fore200e_rx_irq(struct fore200e* fore200e)
1266 {
1267 struct host_rxq* rxq = &fore200e->host_rxq;
1268 struct host_rxq_entry* entry;
1269 struct atm_vcc* vcc;
1270 struct fore200e_vc_map* vc_map;
1271
1272 for (;;) {
1273
1274 entry = &rxq->host_entry[ rxq->head ];
1275
1276 /* no more received PDUs */
1277 if ((*entry->status & STATUS_COMPLETE) == 0)
1278 break;
1279
1280 vc_map = FORE200E_VC_MAP(fore200e, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1281
1282 if ((vc_map->vcc == NULL) ||
1283 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
1284
1285 DPRINTK(1, "no ready VC found for PDU received on %d.%d.%d\n",
1286 fore200e->atm_dev->number,
1287 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1288 }
1289 else {
1290 vcc = vc_map->vcc;
1291 ASSERT(vcc);
1292
1293 if ((*entry->status & STATUS_ERROR) == 0) {
1294
1295 fore200e_push_rpd(fore200e, vcc, entry->rpd);
1296 }
1297 else {
1298 DPRINTK(2, "damaged PDU on %d.%d.%d\n",
1299 fore200e->atm_dev->number,
1300 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1301 atomic_inc(&vcc->stats->rx_err);
1302 }
1303 }
1304
1305 FORE200E_NEXT_ENTRY(rxq->head, QUEUE_SIZE_RX);
1306
1307 fore200e_collect_rpd(fore200e, entry->rpd);
1308
1309 /* rewrite the rpd address to ack the received PDU */
1310 fore200e->bus->write(entry->rpd_dma, &entry->cp_entry->rpd_haddr);
1311 *entry->status = STATUS_FREE;
1312
1313 fore200e_supply(fore200e);
1314 }
1315 }
1316
1317
1318 #ifndef FORE200E_USE_TASKLET
1319 static void
1320 fore200e_irq(struct fore200e* fore200e)
1321 {
1322 unsigned long flags;
1323
1324 spin_lock_irqsave(&fore200e->q_lock, flags);
1325 fore200e_rx_irq(fore200e);
1326 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1327
1328 spin_lock_irqsave(&fore200e->q_lock, flags);
1329 fore200e_tx_irq(fore200e);
1330 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1331 }
1332 #endif
1333
1334
1335 static irqreturn_t
1336 fore200e_interrupt(int irq, void* dev, struct pt_regs* regs)
1337 {
1338 struct fore200e* fore200e = FORE200E_DEV((struct atm_dev*)dev);
1339
1340 if (fore200e->bus->irq_check(fore200e) == 0) {
1341
1342 DPRINTK(3, "interrupt NOT triggered by device %d\n", fore200e->atm_dev->number);
1343 return IRQ_NONE;
1344 }
1345 DPRINTK(3, "interrupt triggered by device %d\n", fore200e->atm_dev->number);
1346
1347 #ifdef FORE200E_USE_TASKLET
1348 tasklet_schedule(&fore200e->tx_tasklet);
1349 tasklet_schedule(&fore200e->rx_tasklet);
1350 #else
1351 fore200e_irq(fore200e);
1352 #endif
1353
1354 fore200e->bus->irq_ack(fore200e);
1355 return IRQ_HANDLED;
1356 }
1357
1358
1359 #ifdef FORE200E_USE_TASKLET
1360 static void
1361 fore200e_tx_tasklet(unsigned long data)
1362 {
1363 struct fore200e* fore200e = (struct fore200e*) data;
1364 unsigned long flags;
1365
1366 DPRINTK(3, "tx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1367
1368 spin_lock_irqsave(&fore200e->q_lock, flags);
1369 fore200e_tx_irq(fore200e);
1370 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1371 }
1372
1373
1374 static void
1375 fore200e_rx_tasklet(unsigned long data)
1376 {
1377 struct fore200e* fore200e = (struct fore200e*) data;
1378 unsigned long flags;
1379
1380 DPRINTK(3, "rx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1381
1382 spin_lock_irqsave(&fore200e->q_lock, flags);
1383 fore200e_rx_irq((struct fore200e*) data);
1384 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1385 }
1386 #endif
1387
1388
1389 static int
1390 fore200e_select_scheme(struct atm_vcc* vcc)
1391 {
1392 /* fairly balance the VCs over (identical) buffer schemes */
1393 int scheme = vcc->vci % 2 ? BUFFER_SCHEME_ONE : BUFFER_SCHEME_TWO;
1394
1395 DPRINTK(1, "VC %d.%d.%d uses buffer scheme %d\n",
1396 vcc->itf, vcc->vpi, vcc->vci, scheme);
1397
1398 return scheme;
1399 }
1400
1401
1402 static int
1403 fore200e_activate_vcin(struct fore200e* fore200e, int activate, struct atm_vcc* vcc, int mtu)
1404 {
1405 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1406 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1407 struct activate_opcode activ_opcode;
1408 struct deactivate_opcode deactiv_opcode;
1409 struct vpvc vpvc;
1410 int ok;
1411 enum fore200e_aal aal = fore200e_atm2fore_aal(vcc->qos.aal);
1412
1413 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1414
1415 if (activate) {
1416 FORE200E_VCC(vcc)->scheme = fore200e_select_scheme(vcc);
1417
1418 activ_opcode.opcode = OPCODE_ACTIVATE_VCIN;
1419 activ_opcode.aal = aal;
1420 activ_opcode.scheme = FORE200E_VCC(vcc)->scheme;
1421 activ_opcode.pad = 0;
1422 }
1423 else {
1424 deactiv_opcode.opcode = OPCODE_DEACTIVATE_VCIN;
1425 deactiv_opcode.pad = 0;
1426 }
1427
1428 vpvc.vci = vcc->vci;
1429 vpvc.vpi = vcc->vpi;
1430
1431 *entry->status = STATUS_PENDING;
1432
1433 if (activate) {
1434
1435 #ifdef FORE200E_52BYTE_AAL0_SDU
1436 mtu = 48;
1437 #endif
1438 /* the MTU is not used by the cp, except in the case of AAL0 */
1439 fore200e->bus->write(mtu, &entry->cp_entry->cmd.activate_block.mtu);
1440 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.vpvc);
1441 fore200e->bus->write(*(u32*)&activ_opcode, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.opcode);
1442 }
1443 else {
1444 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.vpvc);
1445 fore200e->bus->write(*(u32*)&deactiv_opcode, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.opcode);
1446 }
1447
1448 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1449
1450 *entry->status = STATUS_FREE;
1451
1452 if (ok == 0) {
1453 printk(FORE200E "unable to %s VC %d.%d.%d\n",
1454 activate ? "open" : "close", vcc->itf, vcc->vpi, vcc->vci);
1455 return -EIO;
1456 }
1457
1458 DPRINTK(1, "VC %d.%d.%d %sed\n", vcc->itf, vcc->vpi, vcc->vci,
1459 activate ? "open" : "clos");
1460
1461 return 0;
1462 }
1463
1464
1465 #define FORE200E_MAX_BACK2BACK_CELLS 255 /* XXX depends on CDVT */
1466
1467 static void
1468 fore200e_rate_ctrl(struct atm_qos* qos, struct tpd_rate* rate)
1469 {
1470 if (qos->txtp.max_pcr < ATM_OC3_PCR) {
1471
1472 /* compute the data cells to idle cells ratio from the tx PCR */
1473 rate->data_cells = qos->txtp.max_pcr * FORE200E_MAX_BACK2BACK_CELLS / ATM_OC3_PCR;
1474 rate->idle_cells = FORE200E_MAX_BACK2BACK_CELLS - rate->data_cells;
1475 }
1476 else {
1477 /* disable rate control */
1478 rate->data_cells = rate->idle_cells = 0;
1479 }
1480 }
1481
1482
1483 static int
1484 fore200e_open(struct atm_vcc *vcc)
1485 {
1486 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1487 struct fore200e_vcc* fore200e_vcc;
1488 struct fore200e_vc_map* vc_map;
1489 unsigned long flags;
1490 int vci = vcc->vci;
1491 short vpi = vcc->vpi;
1492
1493 ASSERT((vpi >= 0) && (vpi < 1<<FORE200E_VPI_BITS));
1494 ASSERT((vci >= 0) && (vci < 1<<FORE200E_VCI_BITS));
1495
1496 spin_lock_irqsave(&fore200e->q_lock, flags);
1497
1498 vc_map = FORE200E_VC_MAP(fore200e, vpi, vci);
1499 if (vc_map->vcc) {
1500
1501 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1502
1503 printk(FORE200E "VC %d.%d.%d already in use\n",
1504 fore200e->atm_dev->number, vpi, vci);
1505
1506 return -EINVAL;
1507 }
1508
1509 vc_map->vcc = vcc;
1510
1511 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1512
1513 fore200e_vcc = fore200e_kmalloc(sizeof(struct fore200e_vcc), GFP_ATOMIC);
1514 if (fore200e_vcc == NULL) {
1515 vc_map->vcc = NULL;
1516 return -ENOMEM;
1517 }
1518
1519 DPRINTK(2, "opening %d.%d.%d:%d QoS = (tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
1520 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d)\n",
1521 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1522 fore200e_traffic_class[ vcc->qos.txtp.traffic_class ],
1523 vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_cdv, vcc->qos.txtp.max_sdu,
1524 fore200e_traffic_class[ vcc->qos.rxtp.traffic_class ],
1525 vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_cdv, vcc->qos.rxtp.max_sdu);
1526
1527 /* pseudo-CBR bandwidth requested? */
1528 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1529
1530 down(&fore200e->rate_sf);
1531 if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) {
1532 up(&fore200e->rate_sf);
1533
1534 fore200e_kfree(fore200e_vcc);
1535 vc_map->vcc = NULL;
1536 return -EAGAIN;
1537 }
1538
1539 /* reserve bandwidth */
1540 fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr;
1541 up(&fore200e->rate_sf);
1542 }
1543
1544 vcc->itf = vcc->dev->number;
1545
1546 set_bit(ATM_VF_PARTIAL,&vcc->flags);
1547 set_bit(ATM_VF_ADDR, &vcc->flags);
1548
1549 vcc->dev_data = fore200e_vcc;
1550
1551 if (fore200e_activate_vcin(fore200e, 1, vcc, vcc->qos.rxtp.max_sdu) < 0) {
1552
1553 vc_map->vcc = NULL;
1554
1555 clear_bit(ATM_VF_ADDR, &vcc->flags);
1556 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1557
1558 vcc->dev_data = NULL;
1559
1560 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1561
1562 fore200e_kfree(fore200e_vcc);
1563 return -EINVAL;
1564 }
1565
1566 /* compute rate control parameters */
1567 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1568
1569 fore200e_rate_ctrl(&vcc->qos, &fore200e_vcc->rate);
1570 set_bit(ATM_VF_HASQOS, &vcc->flags);
1571
1572 DPRINTK(3, "tx on %d.%d.%d:%d, tx PCR = %d, rx PCR = %d, data_cells = %u, idle_cells = %u\n",
1573 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1574 vcc->qos.txtp.max_pcr, vcc->qos.rxtp.max_pcr,
1575 fore200e_vcc->rate.data_cells, fore200e_vcc->rate.idle_cells);
1576 }
1577
1578 fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1;
1579 fore200e_vcc->tx_max_pdu = fore200e_vcc->rx_max_pdu = 0;
1580 fore200e_vcc->tx_pdu = fore200e_vcc->rx_pdu = 0;
1581
1582 /* new incarnation of the vcc */
1583 vc_map->incarn = ++fore200e->incarn_count;
1584
1585 /* VC unusable before this flag is set */
1586 set_bit(ATM_VF_READY, &vcc->flags);
1587
1588 return 0;
1589 }
1590
1591
1592 static void
1593 fore200e_close(struct atm_vcc* vcc)
1594 {
1595 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1596 struct fore200e_vcc* fore200e_vcc;
1597 struct fore200e_vc_map* vc_map;
1598 unsigned long flags;
1599
1600 ASSERT(vcc);
1601 ASSERT((vcc->vpi >= 0) && (vcc->vpi < 1<<FORE200E_VPI_BITS));
1602 ASSERT((vcc->vci >= 0) && (vcc->vci < 1<<FORE200E_VCI_BITS));
1603
1604 DPRINTK(2, "closing %d.%d.%d:%d\n", vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal));
1605
1606 clear_bit(ATM_VF_READY, &vcc->flags);
1607
1608 fore200e_activate_vcin(fore200e, 0, vcc, 0);
1609
1610 spin_lock_irqsave(&fore200e->q_lock, flags);
1611
1612 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1613
1614 /* the vc is no longer considered as "in use" by fore200e_open() */
1615 vc_map->vcc = NULL;
1616
1617 vcc->itf = vcc->vci = vcc->vpi = 0;
1618
1619 fore200e_vcc = FORE200E_VCC(vcc);
1620 vcc->dev_data = NULL;
1621
1622 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1623
1624 /* release reserved bandwidth, if any */
1625 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1626
1627 down(&fore200e->rate_sf);
1628 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1629 up(&fore200e->rate_sf);
1630
1631 clear_bit(ATM_VF_HASQOS, &vcc->flags);
1632 }
1633
1634 clear_bit(ATM_VF_ADDR, &vcc->flags);
1635 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1636
1637 ASSERT(fore200e_vcc);
1638 fore200e_kfree(fore200e_vcc);
1639 }
1640
1641
1642 static int
1643 fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
1644 {
1645 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1646 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
1647 struct fore200e_vc_map* vc_map;
1648 struct host_txq* txq = &fore200e->host_txq;
1649 struct host_txq_entry* entry;
1650 struct tpd* tpd;
1651 struct tpd_haddr tpd_haddr;
1652 int retry = CONFIG_ATM_FORE200E_TX_RETRY;
1653 int tx_copy = 0;
1654 int tx_len = skb->len;
1655 u32* cell_header = NULL;
1656 unsigned char* skb_data;
1657 int skb_len;
1658 unsigned char* data;
1659 unsigned long flags;
1660
1661 ASSERT(vcc);
1662 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1663 ASSERT(fore200e);
1664 ASSERT(fore200e_vcc);
1665
1666 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
1667 DPRINTK(1, "VC %d.%d.%d not ready for tx\n", vcc->itf, vcc->vpi, vcc->vpi);
1668 dev_kfree_skb_any(skb);
1669 return -EINVAL;
1670 }
1671
1672 #ifdef FORE200E_52BYTE_AAL0_SDU
1673 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.txtp.max_sdu == ATM_AAL0_SDU)) {
1674 cell_header = (u32*) skb->data;
1675 skb_data = skb->data + 4; /* skip 4-byte cell header */
1676 skb_len = tx_len = skb->len - 4;
1677
1678 DPRINTK(3, "user-supplied cell header = 0x%08x\n", *cell_header);
1679 }
1680 else
1681 #endif
1682 {
1683 skb_data = skb->data;
1684 skb_len = skb->len;
1685 }
1686
1687 if (((unsigned long)skb_data) & 0x3) {
1688
1689 DPRINTK(2, "misaligned tx PDU on device %s\n", fore200e->name);
1690 tx_copy = 1;
1691 tx_len = skb_len;
1692 }
1693
1694 if ((vcc->qos.aal == ATM_AAL0) && (skb_len % ATM_CELL_PAYLOAD)) {
1695
1696 /* this simply NUKES the PCA board */
1697 DPRINTK(2, "incomplete tx AAL0 PDU on device %s\n", fore200e->name);
1698 tx_copy = 1;
1699 tx_len = ((skb_len / ATM_CELL_PAYLOAD) + 1) * ATM_CELL_PAYLOAD;
1700 }
1701
1702 if (tx_copy) {
1703 data = kmalloc(tx_len, GFP_ATOMIC | GFP_DMA);
1704 if (data == NULL) {
1705 if (vcc->pop) {
1706 vcc->pop(vcc, skb);
1707 }
1708 else {
1709 dev_kfree_skb_any(skb);
1710 }
1711 return -ENOMEM;
1712 }
1713
1714 memcpy(data, skb_data, skb_len);
1715 if (skb_len < tx_len)
1716 memset(data + skb_len, 0x00, tx_len - skb_len);
1717 }
1718 else {
1719 data = skb_data;
1720 }
1721
1722 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1723 ASSERT(vc_map->vcc == vcc);
1724
1725 retry_here:
1726
1727 spin_lock_irqsave(&fore200e->q_lock, flags);
1728
1729 entry = &txq->host_entry[ txq->head ];
1730
1731 if ((*entry->status != STATUS_FREE) || (txq->txing >= QUEUE_SIZE_TX - 2)) {
1732
1733 /* try to free completed tx queue entries */
1734 fore200e_tx_irq(fore200e);
1735
1736 if (*entry->status != STATUS_FREE) {
1737
1738 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1739
1740 /* retry once again? */
1741 if (--retry > 0) {
1742 udelay(50);
1743 goto retry_here;
1744 }
1745
1746 atomic_inc(&vcc->stats->tx_err);
1747
1748 fore200e->tx_sat++;
1749 DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
1750 fore200e->name, fore200e->cp_queues->heartbeat);
1751 if (vcc->pop) {
1752 vcc->pop(vcc, skb);
1753 }
1754 else {
1755 dev_kfree_skb_any(skb);
1756 }
1757
1758 if (tx_copy)
1759 kfree(data);
1760
1761 return -ENOBUFS;
1762 }
1763 }
1764
1765 entry->incarn = vc_map->incarn;
1766 entry->vc_map = vc_map;
1767 entry->skb = skb;
1768 entry->data = tx_copy ? data : NULL;
1769
1770 tpd = entry->tpd;
1771 tpd->tsd[ 0 ].buffer = fore200e->bus->dma_map(fore200e, data, tx_len, DMA_TO_DEVICE);
1772 tpd->tsd[ 0 ].length = tx_len;
1773
1774 FORE200E_NEXT_ENTRY(txq->head, QUEUE_SIZE_TX);
1775 txq->txing++;
1776
1777 /* The dma_map call above implies a dma_sync so the device can use it,
1778 * thus no explicit dma_sync call is necessary here.
1779 */
1780
1781 DPRINTK(3, "tx on %d.%d.%d:%d, len = %u (%u)\n",
1782 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1783 tpd->tsd[0].length, skb_len);
1784
1785 if (skb_len < fore200e_vcc->tx_min_pdu)
1786 fore200e_vcc->tx_min_pdu = skb_len;
1787 if (skb_len > fore200e_vcc->tx_max_pdu)
1788 fore200e_vcc->tx_max_pdu = skb_len;
1789 fore200e_vcc->tx_pdu++;
1790
1791 /* set tx rate control information */
1792 tpd->rate.data_cells = fore200e_vcc->rate.data_cells;
1793 tpd->rate.idle_cells = fore200e_vcc->rate.idle_cells;
1794
1795 if (cell_header) {
1796 tpd->atm_header.clp = (*cell_header & ATM_HDR_CLP);
1797 tpd->atm_header.plt = (*cell_header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
1798 tpd->atm_header.vci = (*cell_header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT;
1799 tpd->atm_header.vpi = (*cell_header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT;
1800 tpd->atm_header.gfc = (*cell_header & ATM_HDR_GFC_MASK) >> ATM_HDR_GFC_SHIFT;
1801 }
1802 else {
1803 /* set the ATM header, common to all cells conveying the PDU */
1804 tpd->atm_header.clp = 0;
1805 tpd->atm_header.plt = 0;
1806 tpd->atm_header.vci = vcc->vci;
1807 tpd->atm_header.vpi = vcc->vpi;
1808 tpd->atm_header.gfc = 0;
1809 }
1810
1811 tpd->spec.length = tx_len;
1812 tpd->spec.nseg = 1;
1813 tpd->spec.aal = fore200e_atm2fore_aal(vcc->qos.aal);
1814 tpd->spec.intr = 1;
1815
1816 tpd_haddr.size = sizeof(struct tpd) / (1<<TPD_HADDR_SHIFT); /* size is expressed in 32 byte blocks */
1817 tpd_haddr.pad = 0;
1818 tpd_haddr.haddr = entry->tpd_dma >> TPD_HADDR_SHIFT; /* shift the address, as we are in a bitfield */
1819
1820 *entry->status = STATUS_PENDING;
1821 fore200e->bus->write(*(u32*)&tpd_haddr, (u32 __iomem *)&entry->cp_entry->tpd_haddr);
1822
1823 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1824
1825 return 0;
1826 }
1827
1828
1829 static int
1830 fore200e_getstats(struct fore200e* fore200e)
1831 {
1832 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1833 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1834 struct stats_opcode opcode;
1835 int ok;
1836 u32 stats_dma_addr;
1837
1838 if (fore200e->stats == NULL) {
1839 fore200e->stats = fore200e_kmalloc(sizeof(struct stats), GFP_KERNEL | GFP_DMA);
1840 if (fore200e->stats == NULL)
1841 return -ENOMEM;
1842 }
1843
1844 stats_dma_addr = fore200e->bus->dma_map(fore200e, fore200e->stats,
1845 sizeof(struct stats), DMA_FROM_DEVICE);
1846
1847 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1848
1849 opcode.opcode = OPCODE_GET_STATS;
1850 opcode.pad = 0;
1851
1852 fore200e->bus->write(stats_dma_addr, &entry->cp_entry->cmd.stats_block.stats_haddr);
1853
1854 *entry->status = STATUS_PENDING;
1855
1856 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.stats_block.opcode);
1857
1858 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1859
1860 *entry->status = STATUS_FREE;
1861
1862 fore200e->bus->dma_unmap(fore200e, stats_dma_addr, sizeof(struct stats), DMA_FROM_DEVICE);
1863
1864 if (ok == 0) {
1865 printk(FORE200E "unable to get statistics from device %s\n", fore200e->name);
1866 return -EIO;
1867 }
1868
1869 return 0;
1870 }
1871
1872
1873 static int
1874 fore200e_getsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1875 {
1876 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1877
1878 DPRINTK(2, "getsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1879 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1880
1881 return -EINVAL;
1882 }
1883
1884
1885 static int
1886 fore200e_setsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1887 {
1888 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1889
1890 DPRINTK(2, "setsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1891 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1892
1893 return -EINVAL;
1894 }
1895
1896
1897 #if 0 /* currently unused */
1898 static int
1899 fore200e_get_oc3(struct fore200e* fore200e, struct oc3_regs* regs)
1900 {
1901 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1902 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1903 struct oc3_opcode opcode;
1904 int ok;
1905 u32 oc3_regs_dma_addr;
1906
1907 oc3_regs_dma_addr = fore200e->bus->dma_map(fore200e, regs, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1908
1909 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1910
1911 opcode.opcode = OPCODE_GET_OC3;
1912 opcode.reg = 0;
1913 opcode.value = 0;
1914 opcode.mask = 0;
1915
1916 fore200e->bus->write(oc3_regs_dma_addr, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1917
1918 *entry->status = STATUS_PENDING;
1919
1920 fore200e->bus->write(*(u32*)&opcode, (u32*)&entry->cp_entry->cmd.oc3_block.opcode);
1921
1922 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1923
1924 *entry->status = STATUS_FREE;
1925
1926 fore200e->bus->dma_unmap(fore200e, oc3_regs_dma_addr, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1927
1928 if (ok == 0) {
1929 printk(FORE200E "unable to get OC-3 regs of device %s\n", fore200e->name);
1930 return -EIO;
1931 }
1932
1933 return 0;
1934 }
1935 #endif
1936
1937
1938 static int
1939 fore200e_set_oc3(struct fore200e* fore200e, u32 reg, u32 value, u32 mask)
1940 {
1941 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1942 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1943 struct oc3_opcode opcode;
1944 int ok;
1945
1946 DPRINTK(2, "set OC-3 reg = 0x%02x, value = 0x%02x, mask = 0x%02x\n", reg, value, mask);
1947
1948 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1949
1950 opcode.opcode = OPCODE_SET_OC3;
1951 opcode.reg = reg;
1952 opcode.value = value;
1953 opcode.mask = mask;
1954
1955 fore200e->bus->write(0, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1956
1957 *entry->status = STATUS_PENDING;
1958
1959 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.oc3_block.opcode);
1960
1961 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1962
1963 *entry->status = STATUS_FREE;
1964
1965 if (ok == 0) {
1966 printk(FORE200E "unable to set OC-3 reg 0x%02x of device %s\n", reg, fore200e->name);
1967 return -EIO;
1968 }
1969
1970 return 0;
1971 }
1972
1973
1974 static int
1975 fore200e_setloop(struct fore200e* fore200e, int loop_mode)
1976 {
1977 u32 mct_value, mct_mask;
1978 int error;
1979
1980 if (!capable(CAP_NET_ADMIN))
1981 return -EPERM;
1982
1983 switch (loop_mode) {
1984
1985 case ATM_LM_NONE:
1986 mct_value = 0;
1987 mct_mask = SUNI_MCT_DLE | SUNI_MCT_LLE;
1988 break;
1989
1990 case ATM_LM_LOC_PHY:
1991 mct_value = mct_mask = SUNI_MCT_DLE;
1992 break;
1993
1994 case ATM_LM_RMT_PHY:
1995 mct_value = mct_mask = SUNI_MCT_LLE;
1996 break;
1997
1998 default:
1999 return -EINVAL;
2000 }
2001
2002 error = fore200e_set_oc3(fore200e, SUNI_MCT, mct_value, mct_mask);
2003 if (error == 0)
2004 fore200e->loop_mode = loop_mode;
2005
2006 return error;
2007 }
2008
2009
2010 static inline unsigned int
2011 fore200e_swap(unsigned int in)
2012 {
2013 #if defined(__LITTLE_ENDIAN)
2014 return swab32(in);
2015 #else
2016 return in;
2017 #endif
2018 }
2019
2020
2021 static int
2022 fore200e_fetch_stats(struct fore200e* fore200e, struct sonet_stats __user *arg)
2023 {
2024 struct sonet_stats tmp;
2025
2026 if (fore200e_getstats(fore200e) < 0)
2027 return -EIO;
2028
2029 tmp.section_bip = fore200e_swap(fore200e->stats->oc3.section_bip8_errors);
2030 tmp.line_bip = fore200e_swap(fore200e->stats->oc3.line_bip24_errors);
2031 tmp.path_bip = fore200e_swap(fore200e->stats->oc3.path_bip8_errors);
2032 tmp.line_febe = fore200e_swap(fore200e->stats->oc3.line_febe_errors);
2033 tmp.path_febe = fore200e_swap(fore200e->stats->oc3.path_febe_errors);
2034 tmp.corr_hcs = fore200e_swap(fore200e->stats->oc3.corr_hcs_errors);
2035 tmp.uncorr_hcs = fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors);
2036 tmp.tx_cells = fore200e_swap(fore200e->stats->aal0.cells_transmitted) +
2037 fore200e_swap(fore200e->stats->aal34.cells_transmitted) +
2038 fore200e_swap(fore200e->stats->aal5.cells_transmitted);
2039 tmp.rx_cells = fore200e_swap(fore200e->stats->aal0.cells_received) +
2040 fore200e_swap(fore200e->stats->aal34.cells_received) +
2041 fore200e_swap(fore200e->stats->aal5.cells_received);
2042
2043 if (arg)
2044 return copy_to_user(arg, &tmp, sizeof(struct sonet_stats)) ? -EFAULT : 0;
2045
2046 return 0;
2047 }
2048
2049
2050 static int
2051 fore200e_ioctl(struct atm_dev* dev, unsigned int cmd, void __user * arg)
2052 {
2053 struct fore200e* fore200e = FORE200E_DEV(dev);
2054
2055 DPRINTK(2, "ioctl cmd = 0x%x (%u), arg = 0x%p (%lu)\n", cmd, cmd, arg, (unsigned long)arg);
2056
2057 switch (cmd) {
2058
2059 case SONET_GETSTAT:
2060 return fore200e_fetch_stats(fore200e, (struct sonet_stats __user *)arg);
2061
2062 case SONET_GETDIAG:
2063 return put_user(0, (int __user *)arg) ? -EFAULT : 0;
2064
2065 case ATM_SETLOOP:
2066 return fore200e_setloop(fore200e, (int)(unsigned long)arg);
2067
2068 case ATM_GETLOOP:
2069 return put_user(fore200e->loop_mode, (int __user *)arg) ? -EFAULT : 0;
2070
2071 case ATM_QUERYLOOP:
2072 return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY, (int __user *)arg) ? -EFAULT : 0;
2073 }
2074
2075 return -ENOSYS; /* not implemented */
2076 }
2077
2078
2079 static int
2080 fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags)
2081 {
2082 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
2083 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
2084
2085 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
2086 DPRINTK(1, "VC %d.%d.%d not ready for QoS change\n", vcc->itf, vcc->vpi, vcc->vpi);
2087 return -EINVAL;
2088 }
2089
2090 DPRINTK(2, "change_qos %d.%d.%d, "
2091 "(tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
2092 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d), flags = 0x%x\n"
2093 "available_cell_rate = %u",
2094 vcc->itf, vcc->vpi, vcc->vci,
2095 fore200e_traffic_class[ qos->txtp.traffic_class ],
2096 qos->txtp.min_pcr, qos->txtp.max_pcr, qos->txtp.max_cdv, qos->txtp.max_sdu,
2097 fore200e_traffic_class[ qos->rxtp.traffic_class ],
2098 qos->rxtp.min_pcr, qos->rxtp.max_pcr, qos->rxtp.max_cdv, qos->rxtp.max_sdu,
2099 flags, fore200e->available_cell_rate);
2100
2101 if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) {
2102
2103 down(&fore200e->rate_sf);
2104 if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) {
2105 up(&fore200e->rate_sf);
2106 return -EAGAIN;
2107 }
2108
2109 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
2110 fore200e->available_cell_rate -= qos->txtp.max_pcr;
2111
2112 up(&fore200e->rate_sf);
2113
2114 memcpy(&vcc->qos, qos, sizeof(struct atm_qos));
2115
2116 /* update rate control parameters */
2117 fore200e_rate_ctrl(qos, &fore200e_vcc->rate);
2118
2119 set_bit(ATM_VF_HASQOS, &vcc->flags);
2120
2121 return 0;
2122 }
2123
2124 return -EINVAL;
2125 }
2126
2127
2128 static int __init
2129 fore200e_irq_request(struct fore200e* fore200e)
2130 {
2131 if (request_irq(fore200e->irq, fore200e_interrupt, SA_SHIRQ, fore200e->name, fore200e->atm_dev) < 0) {
2132
2133 printk(FORE200E "unable to reserve IRQ %s for device %s\n",
2134 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2135 return -EBUSY;
2136 }
2137
2138 printk(FORE200E "IRQ %s reserved for device %s\n",
2139 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2140
2141 #ifdef FORE200E_USE_TASKLET
2142 tasklet_init(&fore200e->tx_tasklet, fore200e_tx_tasklet, (unsigned long)fore200e);
2143 tasklet_init(&fore200e->rx_tasklet, fore200e_rx_tasklet, (unsigned long)fore200e);
2144 #endif
2145
2146 fore200e->state = FORE200E_STATE_IRQ;
2147 return 0;
2148 }
2149
2150
2151 static int __init
2152 fore200e_get_esi(struct fore200e* fore200e)
2153 {
2154 struct prom_data* prom = fore200e_kmalloc(sizeof(struct prom_data), GFP_KERNEL | GFP_DMA);
2155 int ok, i;
2156
2157 if (!prom)
2158 return -ENOMEM;
2159
2160 ok = fore200e->bus->prom_read(fore200e, prom);
2161 if (ok < 0) {
2162 fore200e_kfree(prom);
2163 return -EBUSY;
2164 }
2165
2166 printk(FORE200E "device %s, rev. %c, S/N: %d, ESI: %02x:%02x:%02x:%02x:%02x:%02x\n",
2167 fore200e->name,
2168 (prom->hw_revision & 0xFF) + '@', /* probably meaningless with SBA boards */
2169 prom->serial_number & 0xFFFF,
2170 prom->mac_addr[ 2 ], prom->mac_addr[ 3 ], prom->mac_addr[ 4 ],
2171 prom->mac_addr[ 5 ], prom->mac_addr[ 6 ], prom->mac_addr[ 7 ]);
2172
2173 for (i = 0; i < ESI_LEN; i++) {
2174 fore200e->esi[ i ] = fore200e->atm_dev->esi[ i ] = prom->mac_addr[ i + 2 ];
2175 }
2176
2177 fore200e_kfree(prom);
2178
2179 return 0;
2180 }
2181
2182
2183 static int __init
2184 fore200e_alloc_rx_buf(struct fore200e* fore200e)
2185 {
2186 int scheme, magn, nbr, size, i;
2187
2188 struct host_bsq* bsq;
2189 struct buffer* buffer;
2190
2191 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2192 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2193
2194 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2195
2196 nbr = fore200e_rx_buf_nbr[ scheme ][ magn ];
2197 size = fore200e_rx_buf_size[ scheme ][ magn ];
2198
2199 DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn);
2200
2201 /* allocate the array of receive buffers */
2202 buffer = bsq->buffer = fore200e_kmalloc(nbr * sizeof(struct buffer), GFP_KERNEL);
2203
2204 if (buffer == NULL)
2205 return -ENOMEM;
2206
2207 bsq->freebuf = NULL;
2208
2209 for (i = 0; i < nbr; i++) {
2210
2211 buffer[ i ].scheme = scheme;
2212 buffer[ i ].magn = magn;
2213 #ifdef FORE200E_BSQ_DEBUG
2214 buffer[ i ].index = i;
2215 buffer[ i ].supplied = 0;
2216 #endif
2217
2218 /* allocate the receive buffer body */
2219 if (fore200e_chunk_alloc(fore200e,
2220 &buffer[ i ].data, size, fore200e->bus->buffer_alignment,
2221 DMA_FROM_DEVICE) < 0) {
2222
2223 while (i > 0)
2224 fore200e_chunk_free(fore200e, &buffer[ --i ].data);
2225 fore200e_kfree(buffer);
2226
2227 return -ENOMEM;
2228 }
2229
2230 /* insert the buffer into the free buffer list */
2231 buffer[ i ].next = bsq->freebuf;
2232 bsq->freebuf = &buffer[ i ];
2233 }
2234 /* all the buffers are free, initially */
2235 bsq->freebuf_count = nbr;
2236
2237 #ifdef FORE200E_BSQ_DEBUG
2238 bsq_audit(3, bsq, scheme, magn);
2239 #endif
2240 }
2241 }
2242
2243 fore200e->state = FORE200E_STATE_ALLOC_BUF;
2244 return 0;
2245 }
2246
2247
2248 static int __init
2249 fore200e_init_bs_queue(struct fore200e* fore200e)
2250 {
2251 int scheme, magn, i;
2252
2253 struct host_bsq* bsq;
2254 struct cp_bsq_entry __iomem * cp_entry;
2255
2256 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2257 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2258
2259 DPRINTK(2, "buffer supply queue %d / %d is being initialized\n", scheme, magn);
2260
2261 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2262
2263 /* allocate and align the array of status words */
2264 if (fore200e->bus->dma_chunk_alloc(fore200e,
2265 &bsq->status,
2266 sizeof(enum status),
2267 QUEUE_SIZE_BS,
2268 fore200e->bus->status_alignment) < 0) {
2269 return -ENOMEM;
2270 }
2271
2272 /* allocate and align the array of receive buffer descriptors */
2273 if (fore200e->bus->dma_chunk_alloc(fore200e,
2274 &bsq->rbd_block,
2275 sizeof(struct rbd_block),
2276 QUEUE_SIZE_BS,
2277 fore200e->bus->descr_alignment) < 0) {
2278
2279 fore200e->bus->dma_chunk_free(fore200e, &bsq->status);
2280 return -ENOMEM;
2281 }
2282
2283 /* get the base address of the cp resident buffer supply queue entries */
2284 cp_entry = fore200e->virt_base +
2285 fore200e->bus->read(&fore200e->cp_queues->cp_bsq[ scheme ][ magn ]);
2286
2287 /* fill the host resident and cp resident buffer supply queue entries */
2288 for (i = 0; i < QUEUE_SIZE_BS; i++) {
2289
2290 bsq->host_entry[ i ].status =
2291 FORE200E_INDEX(bsq->status.align_addr, enum status, i);
2292 bsq->host_entry[ i ].rbd_block =
2293 FORE200E_INDEX(bsq->rbd_block.align_addr, struct rbd_block, i);
2294 bsq->host_entry[ i ].rbd_block_dma =
2295 FORE200E_DMA_INDEX(bsq->rbd_block.dma_addr, struct rbd_block, i);
2296 bsq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2297
2298 *bsq->host_entry[ i ].status = STATUS_FREE;
2299
2300 fore200e->bus->write(FORE200E_DMA_INDEX(bsq->status.dma_addr, enum status, i),
2301 &cp_entry[ i ].status_haddr);
2302 }
2303 }
2304 }
2305
2306 fore200e->state = FORE200E_STATE_INIT_BSQ;
2307 return 0;
2308 }
2309
2310
2311 static int __init
2312 fore200e_init_rx_queue(struct fore200e* fore200e)
2313 {
2314 struct host_rxq* rxq = &fore200e->host_rxq;
2315 struct cp_rxq_entry __iomem * cp_entry;
2316 int i;
2317
2318 DPRINTK(2, "receive queue is being initialized\n");
2319
2320 /* allocate and align the array of status words */
2321 if (fore200e->bus->dma_chunk_alloc(fore200e,
2322 &rxq->status,
2323 sizeof(enum status),
2324 QUEUE_SIZE_RX,
2325 fore200e->bus->status_alignment) < 0) {
2326 return -ENOMEM;
2327 }
2328
2329 /* allocate and align the array of receive PDU descriptors */
2330 if (fore200e->bus->dma_chunk_alloc(fore200e,
2331 &rxq->rpd,
2332 sizeof(struct rpd),
2333 QUEUE_SIZE_RX,
2334 fore200e->bus->descr_alignment) < 0) {
2335
2336 fore200e->bus->dma_chunk_free(fore200e, &rxq->status);
2337 return -ENOMEM;
2338 }
2339
2340 /* get the base address of the cp resident rx queue entries */
2341 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_rxq);
2342
2343 /* fill the host resident and cp resident rx entries */
2344 for (i=0; i < QUEUE_SIZE_RX; i++) {
2345
2346 rxq->host_entry[ i ].status =
2347 FORE200E_INDEX(rxq->status.align_addr, enum status, i);
2348 rxq->host_entry[ i ].rpd =
2349 FORE200E_INDEX(rxq->rpd.align_addr, struct rpd, i);
2350 rxq->host_entry[ i ].rpd_dma =
2351 FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i);
2352 rxq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2353
2354 *rxq->host_entry[ i ].status = STATUS_FREE;
2355
2356 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->status.dma_addr, enum status, i),
2357 &cp_entry[ i ].status_haddr);
2358
2359 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i),
2360 &cp_entry[ i ].rpd_haddr);
2361 }
2362
2363 /* set the head entry of the queue */
2364 rxq->head = 0;
2365
2366 fore200e->state = FORE200E_STATE_INIT_RXQ;
2367 return 0;
2368 }
2369
2370
2371 static int __init
2372 fore200e_init_tx_queue(struct fore200e* fore200e)
2373 {
2374 struct host_txq* txq = &fore200e->host_txq;
2375 struct cp_txq_entry __iomem * cp_entry;
2376 int i;
2377
2378 DPRINTK(2, "transmit queue is being initialized\n");
2379
2380 /* allocate and align the array of status words */
2381 if (fore200e->bus->dma_chunk_alloc(fore200e,
2382 &txq->status,
2383 sizeof(enum status),
2384 QUEUE_SIZE_TX,
2385 fore200e->bus->status_alignment) < 0) {
2386 return -ENOMEM;
2387 }
2388
2389 /* allocate and align the array of transmit PDU descriptors */
2390 if (fore200e->bus->dma_chunk_alloc(fore200e,
2391 &txq->tpd,
2392 sizeof(struct tpd),
2393 QUEUE_SIZE_TX,
2394 fore200e->bus->descr_alignment) < 0) {
2395
2396 fore200e->bus->dma_chunk_free(fore200e, &txq->status);
2397 return -ENOMEM;
2398 }
2399
2400 /* get the base address of the cp resident tx queue entries */
2401 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_txq);
2402
2403 /* fill the host resident and cp resident tx entries */
2404 for (i=0; i < QUEUE_SIZE_TX; i++) {
2405
2406 txq->host_entry[ i ].status =
2407 FORE200E_INDEX(txq->status.align_addr, enum status, i);
2408 txq->host_entry[ i ].tpd =
2409 FORE200E_INDEX(txq->tpd.align_addr, struct tpd, i);
2410 txq->host_entry[ i ].tpd_dma =
2411 FORE200E_DMA_INDEX(txq->tpd.dma_addr, struct tpd, i);
2412 txq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2413
2414 *txq->host_entry[ i ].status = STATUS_FREE;
2415
2416 fore200e->bus->write(FORE200E_DMA_INDEX(txq->status.dma_addr, enum status, i),
2417 &cp_entry[ i ].status_haddr);
2418
2419 /* although there is a one-to-one mapping of tx queue entries and tpds,
2420 we do not write here the DMA (physical) base address of each tpd into
2421 the related cp resident entry, because the cp relies on this write
2422 operation to detect that a new pdu has been submitted for tx */
2423 }
2424
2425 /* set the head and tail entries of the queue */
2426 txq->head = 0;
2427 txq->tail = 0;
2428
2429 fore200e->state = FORE200E_STATE_INIT_TXQ;
2430 return 0;
2431 }
2432
2433
2434 static int __init
2435 fore200e_init_cmd_queue(struct fore200e* fore200e)
2436 {
2437 struct host_cmdq* cmdq = &fore200e->host_cmdq;
2438 struct cp_cmdq_entry __iomem * cp_entry;
2439 int i;
2440
2441 DPRINTK(2, "command queue is being initialized\n");
2442
2443 /* allocate and align the array of status words */
2444 if (fore200e->bus->dma_chunk_alloc(fore200e,
2445 &cmdq->status,
2446 sizeof(enum status),
2447 QUEUE_SIZE_CMD,
2448 fore200e->bus->status_alignment) < 0) {
2449 return -ENOMEM;
2450 }
2451
2452 /* get the base address of the cp resident cmd queue entries */
2453 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_cmdq);
2454
2455 /* fill the host resident and cp resident cmd entries */
2456 for (i=0; i < QUEUE_SIZE_CMD; i++) {
2457
2458 cmdq->host_entry[ i ].status =
2459 FORE200E_INDEX(cmdq->status.align_addr, enum status, i);
2460 cmdq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2461
2462 *cmdq->host_entry[ i ].status = STATUS_FREE;
2463
2464 fore200e->bus->write(FORE200E_DMA_INDEX(cmdq->status.dma_addr, enum status, i),
2465 &cp_entry[ i ].status_haddr);
2466 }
2467
2468 /* set the head entry of the queue */
2469 cmdq->head = 0;
2470
2471 fore200e->state = FORE200E_STATE_INIT_CMDQ;
2472 return 0;
2473 }
2474
2475
2476 static void __init
2477 fore200e_param_bs_queue(struct fore200e* fore200e,
2478 enum buffer_scheme scheme, enum buffer_magn magn,
2479 int queue_length, int pool_size, int supply_blksize)
2480 {
2481 struct bs_spec __iomem * bs_spec = &fore200e->cp_queues->init.bs_spec[ scheme ][ magn ];
2482
2483 fore200e->bus->write(queue_length, &bs_spec->queue_length);
2484 fore200e->bus->write(fore200e_rx_buf_size[ scheme ][ magn ], &bs_spec->buffer_size);
2485 fore200e->bus->write(pool_size, &bs_spec->pool_size);
2486 fore200e->bus->write(supply_blksize, &bs_spec->supply_blksize);
2487 }
2488
2489
2490 static int __init
2491 fore200e_initialize(struct fore200e* fore200e)
2492 {
2493 struct cp_queues __iomem * cpq;
2494 int ok, scheme, magn;
2495
2496 DPRINTK(2, "device %s being initialized\n", fore200e->name);
2497
2498 init_MUTEX(&fore200e->rate_sf);
2499 spin_lock_init(&fore200e->q_lock);
2500
2501 cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET;
2502
2503 /* enable cp to host interrupts */
2504 fore200e->bus->write(1, &cpq->imask);
2505
2506 if (fore200e->bus->irq_enable)
2507 fore200e->bus->irq_enable(fore200e);
2508
2509 fore200e->bus->write(NBR_CONNECT, &cpq->init.num_connect);
2510
2511 fore200e->bus->write(QUEUE_SIZE_CMD, &cpq->init.cmd_queue_len);
2512 fore200e->bus->write(QUEUE_SIZE_RX, &cpq->init.rx_queue_len);
2513 fore200e->bus->write(QUEUE_SIZE_TX, &cpq->init.tx_queue_len);
2514
2515 fore200e->bus->write(RSD_EXTENSION, &cpq->init.rsd_extension);
2516 fore200e->bus->write(TSD_EXTENSION, &cpq->init.tsd_extension);
2517
2518 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++)
2519 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++)
2520 fore200e_param_bs_queue(fore200e, scheme, magn,
2521 QUEUE_SIZE_BS,
2522 fore200e_rx_buf_nbr[ scheme ][ magn ],
2523 RBD_BLK_SIZE);
2524
2525 /* issue the initialize command */
2526 fore200e->bus->write(STATUS_PENDING, &cpq->init.status);
2527 fore200e->bus->write(OPCODE_INITIALIZE, &cpq->init.opcode);
2528
2529 ok = fore200e_io_poll(fore200e, &cpq->init.status, STATUS_COMPLETE, 3000);
2530 if (ok == 0) {
2531 printk(FORE200E "device %s initialization failed\n", fore200e->name);
2532 return -ENODEV;
2533 }
2534
2535 printk(FORE200E "device %s initialized\n", fore200e->name);
2536
2537 fore200e->state = FORE200E_STATE_INITIALIZE;
2538 return 0;
2539 }
2540
2541
2542 static void __init
2543 fore200e_monitor_putc(struct fore200e* fore200e, char c)
2544 {
2545 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2546
2547 #if 0
2548 printk("%c", c);
2549 #endif
2550 fore200e->bus->write(((u32) c) | FORE200E_CP_MONITOR_UART_AVAIL, &monitor->soft_uart.send);
2551 }
2552
2553
2554 static int __init
2555 fore200e_monitor_getc(struct fore200e* fore200e)
2556 {
2557 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2558 unsigned long timeout = jiffies + msecs_to_jiffies(50);
2559 int c;
2560
2561 while (time_before(jiffies, timeout)) {
2562
2563 c = (int) fore200e->bus->read(&monitor->soft_uart.recv);
2564
2565 if (c & FORE200E_CP_MONITOR_UART_AVAIL) {
2566
2567 fore200e->bus->write(FORE200E_CP_MONITOR_UART_FREE, &monitor->soft_uart.recv);
2568 #if 0
2569 printk("%c", c & 0xFF);
2570 #endif
2571 return c & 0xFF;
2572 }
2573 }
2574
2575 return -1;
2576 }
2577
2578
2579 static void __init
2580 fore200e_monitor_puts(struct fore200e* fore200e, char* str)
2581 {
2582 while (*str) {
2583
2584 /* the i960 monitor doesn't accept any new character if it has something to say */
2585 while (fore200e_monitor_getc(fore200e) >= 0);
2586
2587 fore200e_monitor_putc(fore200e, *str++);
2588 }
2589
2590 while (fore200e_monitor_getc(fore200e) >= 0);
2591 }
2592
2593
2594 static int __init
2595 fore200e_start_fw(struct fore200e* fore200e)
2596 {
2597 int ok;
2598 char cmd[ 48 ];
2599 struct fw_header* fw_header = (struct fw_header*) fore200e->bus->fw_data;
2600
2601 DPRINTK(2, "device %s firmware being started\n", fore200e->name);
2602
2603 #if defined(__sparc_v9__)
2604 /* reported to be required by SBA cards on some sparc64 hosts */
2605 fore200e_spin(100);
2606 #endif
2607
2608 sprintf(cmd, "\rgo %x\r", le32_to_cpu(fw_header->start_offset));
2609
2610 fore200e_monitor_puts(fore200e, cmd);
2611
2612 ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_CP_RUNNING, 1000);
2613 if (ok == 0) {
2614 printk(FORE200E "device %s firmware didn't start\n", fore200e->name);
2615 return -ENODEV;
2616 }
2617
2618 printk(FORE200E "device %s firmware started\n", fore200e->name);
2619
2620 fore200e->state = FORE200E_STATE_START_FW;
2621 return 0;
2622 }
2623
2624
2625 static int __init
2626 fore200e_load_fw(struct fore200e* fore200e)
2627 {
2628 u32* fw_data = (u32*) fore200e->bus->fw_data;
2629 u32 fw_size = (u32) *fore200e->bus->fw_size / sizeof(u32);
2630
2631 struct fw_header* fw_header = (struct fw_header*) fw_data;
2632
2633 u32 __iomem *load_addr = fore200e->virt_base + le32_to_cpu(fw_header->load_offset);
2634
2635 DPRINTK(2, "device %s firmware being loaded at 0x%p (%d words)\n",
2636 fore200e->name, load_addr, fw_size);
2637
2638 if (le32_to_cpu(fw_header->magic) != FW_HEADER_MAGIC) {
2639 printk(FORE200E "corrupted %s firmware image\n", fore200e->bus->model_name);
2640 return -ENODEV;
2641 }
2642
2643 for (; fw_size--; fw_data++, load_addr++)
2644 fore200e->bus->write(le32_to_cpu(*fw_data), load_addr);
2645
2646 fore200e->state = FORE200E_STATE_LOAD_FW;
2647 return 0;
2648 }
2649
2650
2651 static int __init
2652 fore200e_register(struct fore200e* fore200e)
2653 {
2654 struct atm_dev* atm_dev;
2655
2656 DPRINTK(2, "device %s being registered\n", fore200e->name);
2657
2658 atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1,
2659 NULL);
2660 if (atm_dev == NULL) {
2661 printk(FORE200E "unable to register device %s\n", fore200e->name);
2662 return -ENODEV;
2663 }
2664
2665 atm_dev->dev_data = fore200e;
2666 fore200e->atm_dev = atm_dev;
2667
2668 atm_dev->ci_range.vpi_bits = FORE200E_VPI_BITS;
2669 atm_dev->ci_range.vci_bits = FORE200E_VCI_BITS;
2670
2671 fore200e->available_cell_rate = ATM_OC3_PCR;
2672
2673 fore200e->state = FORE200E_STATE_REGISTER;
2674 return 0;
2675 }
2676
2677
2678 static int __init
2679 fore200e_init(struct fore200e* fore200e)
2680 {
2681 if (fore200e_register(fore200e) < 0)
2682 return -ENODEV;
2683
2684 if (fore200e->bus->configure(fore200e) < 0)
2685 return -ENODEV;
2686
2687 if (fore200e->bus->map(fore200e) < 0)
2688 return -ENODEV;
2689
2690 if (fore200e_reset(fore200e, 1) < 0)
2691 return -ENODEV;
2692
2693 if (fore200e_load_fw(fore200e) < 0)
2694 return -ENODEV;
2695
2696 if (fore200e_start_fw(fore200e) < 0)
2697 return -ENODEV;
2698
2699 if (fore200e_initialize(fore200e) < 0)
2700 return -ENODEV;
2701
2702 if (fore200e_init_cmd_queue(fore200e) < 0)
2703 return -ENOMEM;
2704
2705 if (fore200e_init_tx_queue(fore200e) < 0)
2706 return -ENOMEM;
2707
2708 if (fore200e_init_rx_queue(fore200e) < 0)
2709 return -ENOMEM;
2710
2711 if (fore200e_init_bs_queue(fore200e) < 0)
2712 return -ENOMEM;
2713
2714 if (fore200e_alloc_rx_buf(fore200e) < 0)
2715 return -ENOMEM;
2716
2717 if (fore200e_get_esi(fore200e) < 0)
2718 return -EIO;
2719
2720 if (fore200e_irq_request(fore200e) < 0)
2721 return -EBUSY;
2722
2723 fore200e_supply(fore200e);
2724
2725 /* all done, board initialization is now complete */
2726 fore200e->state = FORE200E_STATE_COMPLETE;
2727 return 0;
2728 }
2729
2730
2731 static int __devinit
2732 fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
2733 {
2734 const struct fore200e_bus* bus = (struct fore200e_bus*) pci_ent->driver_data;
2735 struct fore200e* fore200e;
2736 int err = 0;
2737 static int index = 0;
2738
2739 if (pci_enable_device(pci_dev)) {
2740 err = -EINVAL;
2741 goto out;
2742 }
2743
2744 fore200e = fore200e_kmalloc(sizeof(struct fore200e), GFP_KERNEL);
2745 if (fore200e == NULL) {
2746 err = -ENOMEM;
2747 goto out_disable;
2748 }
2749
2750 fore200e->bus = bus;
2751 fore200e->bus_dev = pci_dev;
2752 fore200e->irq = pci_dev->irq;
2753 fore200e->phys_base = pci_resource_start(pci_dev, 0);
2754
2755 sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
2756
2757 pci_set_master(pci_dev);
2758
2759 printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2760 fore200e->bus->model_name,
2761 fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2762
2763 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2764
2765 err = fore200e_init(fore200e);
2766 if (err < 0) {
2767 fore200e_shutdown(fore200e);
2768 goto out_free;
2769 }
2770
2771 ++index;
2772 pci_set_drvdata(pci_dev, fore200e);
2773
2774 out:
2775 return err;
2776
2777 out_free:
2778 kfree(fore200e);
2779 out_disable:
2780 pci_disable_device(pci_dev);
2781 goto out;
2782 }
2783
2784
2785 static void __devexit fore200e_pca_remove_one(struct pci_dev *pci_dev)
2786 {
2787 struct fore200e *fore200e;
2788
2789 fore200e = pci_get_drvdata(pci_dev);
2790
2791 fore200e_shutdown(fore200e);
2792 kfree(fore200e);
2793 pci_disable_device(pci_dev);
2794 }
2795
2796
2797 #ifdef CONFIG_ATM_FORE200E_PCA
2798 static struct pci_device_id fore200e_pca_tbl[] = {
2799 { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_PCA200E, PCI_ANY_ID, PCI_ANY_ID,
2800 0, 0, (unsigned long) &fore200e_bus[0] },
2801 { 0, }
2802 };
2803
2804 MODULE_DEVICE_TABLE(pci, fore200e_pca_tbl);
2805
2806 static struct pci_driver fore200e_pca_driver = {
2807 .name = "fore_200e",
2808 .probe = fore200e_pca_detect,
2809 .remove = __devexit_p(fore200e_pca_remove_one),
2810 .id_table = fore200e_pca_tbl,
2811 };
2812 #endif
2813
2814
2815 static int __init
2816 fore200e_module_init(void)
2817 {
2818 const struct fore200e_bus* bus;
2819 struct fore200e* fore200e;
2820 int index;
2821
2822 printk(FORE200E "FORE Systems 200E-series ATM driver - version " FORE200E_VERSION "\n");
2823
2824 /* for each configured bus interface */
2825 for (bus = fore200e_bus; bus->model_name; bus++) {
2826
2827 /* detect all boards present on that bus */
2828 for (index = 0; bus->detect && (fore200e = bus->detect(bus, index)); index++) {
2829
2830 printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2831 fore200e->bus->model_name,
2832 fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2833
2834 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2835
2836 if (fore200e_init(fore200e) < 0) {
2837
2838 fore200e_shutdown(fore200e);
2839 break;
2840 }
2841
2842 list_add(&fore200e->entry, &fore200e_boards);
2843 }
2844 }
2845
2846 #ifdef CONFIG_ATM_FORE200E_PCA
2847 if (!pci_register_driver(&fore200e_pca_driver))
2848 return 0;
2849 #endif
2850
2851 if (!list_empty(&fore200e_boards))
2852 return 0;
2853
2854 return -ENODEV;
2855 }
2856
2857
2858 static void __exit
2859 fore200e_module_cleanup(void)
2860 {
2861 struct fore200e *fore200e, *next;
2862
2863 #ifdef CONFIG_ATM_FORE200E_PCA
2864 pci_unregister_driver(&fore200e_pca_driver);
2865 #endif
2866
2867 list_for_each_entry_safe(fore200e, next, &fore200e_boards, entry) {
2868 fore200e_shutdown(fore200e);
2869 kfree(fore200e);
2870 }
2871 DPRINTK(1, "module being removed\n");
2872 }
2873
2874
2875 static int
2876 fore200e_proc_read(struct atm_dev *dev, loff_t* pos, char* page)
2877 {
2878 struct fore200e* fore200e = FORE200E_DEV(dev);
2879 struct fore200e_vcc* fore200e_vcc;
2880 struct atm_vcc* vcc;
2881 int i, len, left = *pos;
2882 unsigned long flags;
2883
2884 if (!left--) {
2885
2886 if (fore200e_getstats(fore200e) < 0)
2887 return -EIO;
2888
2889 len = sprintf(page,"\n"
2890 " device:\n"
2891 " internal name:\t\t%s\n", fore200e->name);
2892
2893 /* print bus-specific information */
2894 if (fore200e->bus->proc_read)
2895 len += fore200e->bus->proc_read(fore200e, page + len);
2896
2897 len += sprintf(page + len,
2898 " interrupt line:\t\t%s\n"
2899 " physical base address:\t0x%p\n"
2900 " virtual base address:\t0x%p\n"
2901 " factory address (ESI):\t%02x:%02x:%02x:%02x:%02x:%02x\n"
2902 " board serial number:\t\t%d\n\n",
2903 fore200e_irq_itoa(fore200e->irq),
2904 (void*)fore200e->phys_base,
2905 fore200e->virt_base,
2906 fore200e->esi[0], fore200e->esi[1], fore200e->esi[2],
2907 fore200e->esi[3], fore200e->esi[4], fore200e->esi[5],
2908 fore200e->esi[4] * 256 + fore200e->esi[5]);
2909
2910 return len;
2911 }
2912
2913 if (!left--)
2914 return sprintf(page,
2915 " free small bufs, scheme 1:\t%d\n"
2916 " free large bufs, scheme 1:\t%d\n"
2917 " free small bufs, scheme 2:\t%d\n"
2918 " free large bufs, scheme 2:\t%d\n",
2919 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_SMALL ].freebuf_count,
2920 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_LARGE ].freebuf_count,
2921 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_SMALL ].freebuf_count,
2922 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_LARGE ].freebuf_count);
2923
2924 if (!left--) {
2925 u32 hb = fore200e->bus->read(&fore200e->cp_queues->heartbeat);
2926
2927 len = sprintf(page,"\n\n"
2928 " cell processor:\n"
2929 " heartbeat state:\t\t");
2930
2931 if (hb >> 16 != 0xDEAD)
2932 len += sprintf(page + len, "0x%08x\n", hb);
2933 else
2934 len += sprintf(page + len, "*** FATAL ERROR %04x ***\n", hb & 0xFFFF);
2935
2936 return len;
2937 }
2938
2939 if (!left--) {
2940 static const char* media_name[] = {
2941 "unshielded twisted pair",
2942 "multimode optical fiber ST",
2943 "multimode optical fiber SC",
2944 "single-mode optical fiber ST",
2945 "single-mode optical fiber SC",
2946 "unknown"
2947 };
2948
2949 static const char* oc3_mode[] = {
2950 "normal operation",
2951 "diagnostic loopback",
2952 "line loopback",
2953 "unknown"
2954 };
2955
2956 u32 fw_release = fore200e->bus->read(&fore200e->cp_queues->fw_release);
2957 u32 mon960_release = fore200e->bus->read(&fore200e->cp_queues->mon960_release);
2958 u32 oc3_revision = fore200e->bus->read(&fore200e->cp_queues->oc3_revision);
2959 u32 media_index = FORE200E_MEDIA_INDEX(fore200e->bus->read(&fore200e->cp_queues->media_type));
2960 u32 oc3_index;
2961
2962 if ((media_index < 0) || (media_index > 4))
2963 media_index = 5;
2964
2965 switch (fore200e->loop_mode) {
2966 case ATM_LM_NONE: oc3_index = 0;
2967 break;
2968 case ATM_LM_LOC_PHY: oc3_index = 1;
2969 break;
2970 case ATM_LM_RMT_PHY: oc3_index = 2;
2971 break;
2972 default: oc3_index = 3;
2973 }
2974
2975 return sprintf(page,
2976 " firmware release:\t\t%d.%d.%d\n"
2977 " monitor release:\t\t%d.%d\n"
2978 " media type:\t\t\t%s\n"
2979 " OC-3 revision:\t\t0x%x\n"
2980 " OC-3 mode:\t\t\t%s",
2981 fw_release >> 16, fw_release << 16 >> 24, fw_release << 24 >> 24,
2982 mon960_release >> 16, mon960_release << 16 >> 16,
2983 media_name[ media_index ],
2984 oc3_revision,
2985 oc3_mode[ oc3_index ]);
2986 }
2987
2988 if (!left--) {
2989 struct cp_monitor __iomem * cp_monitor = fore200e->cp_monitor;
2990
2991 return sprintf(page,
2992 "\n\n"
2993 " monitor:\n"
2994 " version number:\t\t%d\n"
2995 " boot status word:\t\t0x%08x\n",
2996 fore200e->bus->read(&cp_monitor->mon_version),
2997 fore200e->bus->read(&cp_monitor->bstat));
2998 }
2999
3000 if (!left--)
3001 return sprintf(page,
3002 "\n"
3003 " device statistics:\n"
3004 " 4b5b:\n"
3005 " crc_header_errors:\t\t%10u\n"
3006 " framing_errors:\t\t%10u\n",
3007 fore200e_swap(fore200e->stats->phy.crc_header_errors),
3008 fore200e_swap(fore200e->stats->phy.framing_errors));
3009
3010 if (!left--)
3011 return sprintf(page, "\n"
3012 " OC-3:\n"
3013 " section_bip8_errors:\t%10u\n"
3014 " path_bip8_errors:\t\t%10u\n"
3015 " line_bip24_errors:\t\t%10u\n"
3016 " line_febe_errors:\t\t%10u\n"
3017 " path_febe_errors:\t\t%10u\n"
3018 " corr_hcs_errors:\t\t%10u\n"
3019 " ucorr_hcs_errors:\t\t%10u\n",
3020 fore200e_swap(fore200e->stats->oc3.section_bip8_errors),
3021 fore200e_swap(fore200e->stats->oc3.path_bip8_errors),
3022 fore200e_swap(fore200e->stats->oc3.line_bip24_errors),
3023 fore200e_swap(fore200e->stats->oc3.line_febe_errors),
3024 fore200e_swap(fore200e->stats->oc3.path_febe_errors),
3025 fore200e_swap(fore200e->stats->oc3.corr_hcs_errors),
3026 fore200e_swap(fore200e->stats->oc3.ucorr_hcs_errors));
3027
3028 if (!left--)
3029 return sprintf(page,"\n"
3030 " ATM:\t\t\t\t cells\n"
3031 " TX:\t\t\t%10u\n"
3032 " RX:\t\t\t%10u\n"
3033 " vpi out of range:\t\t%10u\n"
3034 " vpi no conn:\t\t%10u\n"
3035 " vci out of range:\t\t%10u\n"
3036 " vci no conn:\t\t%10u\n",
3037 fore200e_swap(fore200e->stats->atm.cells_transmitted),
3038 fore200e_swap(fore200e->stats->atm.cells_received),
3039 fore200e_swap(fore200e->stats->atm.vpi_bad_range),
3040 fore200e_swap(fore200e->stats->atm.vpi_no_conn),
3041 fore200e_swap(fore200e->stats->atm.vci_bad_range),
3042 fore200e_swap(fore200e->stats->atm.vci_no_conn));
3043
3044 if (!left--)
3045 return sprintf(page,"\n"
3046 " AAL0:\t\t\t cells\n"
3047 " TX:\t\t\t%10u\n"
3048 " RX:\t\t\t%10u\n"
3049 " dropped:\t\t\t%10u\n",
3050 fore200e_swap(fore200e->stats->aal0.cells_transmitted),
3051 fore200e_swap(fore200e->stats->aal0.cells_received),
3052 fore200e_swap(fore200e->stats->aal0.cells_dropped));
3053
3054 if (!left--)
3055 return sprintf(page,"\n"
3056 " AAL3/4:\n"
3057 " SAR sublayer:\t\t cells\n"
3058 " TX:\t\t\t%10u\n"
3059 " RX:\t\t\t%10u\n"
3060 " dropped:\t\t\t%10u\n"
3061 " CRC errors:\t\t%10u\n"
3062 " protocol errors:\t\t%10u\n\n"
3063 " CS sublayer:\t\t PDUs\n"
3064 " TX:\t\t\t%10u\n"
3065 " RX:\t\t\t%10u\n"
3066 " dropped:\t\t\t%10u\n"
3067 " protocol errors:\t\t%10u\n",
3068 fore200e_swap(fore200e->stats->aal34.cells_transmitted),
3069 fore200e_swap(fore200e->stats->aal34.cells_received),
3070 fore200e_swap(fore200e->stats->aal34.cells_dropped),
3071 fore200e_swap(fore200e->stats->aal34.cells_crc_errors),
3072 fore200e_swap(fore200e->stats->aal34.cells_protocol_errors),
3073 fore200e_swap(fore200e->stats->aal34.cspdus_transmitted),
3074 fore200e_swap(fore200e->stats->aal34.cspdus_received),
3075 fore200e_swap(fore200e->stats->aal34.cspdus_dropped),
3076 fore200e_swap(fore200e->stats->aal34.cspdus_protocol_errors));
3077
3078 if (!left--)
3079 return sprintf(page,"\n"
3080 " AAL5:\n"
3081 " SAR sublayer:\t\t cells\n"
3082 " TX:\t\t\t%10u\n"
3083 " RX:\t\t\t%10u\n"
3084 " dropped:\t\t\t%10u\n"
3085 " congestions:\t\t%10u\n\n"
3086 " CS sublayer:\t\t PDUs\n"
3087 " TX:\t\t\t%10u\n"
3088 " RX:\t\t\t%10u\n"
3089 " dropped:\t\t\t%10u\n"
3090 " CRC errors:\t\t%10u\n"
3091 " protocol errors:\t\t%10u\n",
3092 fore200e_swap(fore200e->stats->aal5.cells_transmitted),
3093 fore200e_swap(fore200e->stats->aal5.cells_received),
3094 fore200e_swap(fore200e->stats->aal5.cells_dropped),
3095 fore200e_swap(fore200e->stats->aal5.congestion_experienced),
3096 fore200e_swap(fore200e->stats->aal5.cspdus_transmitted),
3097 fore200e_swap(fore200e->stats->aal5.cspdus_received),
3098 fore200e_swap(fore200e->stats->aal5.cspdus_dropped),
3099 fore200e_swap(fore200e->stats->aal5.cspdus_crc_errors),
3100 fore200e_swap(fore200e->stats->aal5.cspdus_protocol_errors));
3101
3102 if (!left--)
3103 return sprintf(page,"\n"
3104 " AUX:\t\t allocation failures\n"
3105 " small b1:\t\t\t%10u\n"
3106 " large b1:\t\t\t%10u\n"
3107 " small b2:\t\t\t%10u\n"
3108 " large b2:\t\t\t%10u\n"
3109 " RX PDUs:\t\t\t%10u\n"
3110 " TX PDUs:\t\t\t%10lu\n",
3111 fore200e_swap(fore200e->stats->aux.small_b1_failed),
3112 fore200e_swap(fore200e->stats->aux.large_b1_failed),
3113 fore200e_swap(fore200e->stats->aux.small_b2_failed),
3114 fore200e_swap(fore200e->stats->aux.large_b2_failed),
3115 fore200e_swap(fore200e->stats->aux.rpd_alloc_failed),
3116 fore200e->tx_sat);
3117
3118 if (!left--)
3119 return sprintf(page,"\n"
3120 " receive carrier:\t\t\t%s\n",
3121 fore200e->stats->aux.receive_carrier ? "ON" : "OFF!");
3122
3123 if (!left--) {
3124 return sprintf(page,"\n"
3125 " VCCs:\n address VPI VCI AAL "
3126 "TX PDUs TX min/max size RX PDUs RX min/max size\n");
3127 }
3128
3129 for (i = 0; i < NBR_CONNECT; i++) {
3130
3131 vcc = fore200e->vc_map[i].vcc;
3132
3133 if (vcc == NULL)
3134 continue;
3135
3136 spin_lock_irqsave(&fore200e->q_lock, flags);
3137
3138 if (vcc && test_bit(ATM_VF_READY, &vcc->flags) && !left--) {
3139
3140 fore200e_vcc = FORE200E_VCC(vcc);
3141 ASSERT(fore200e_vcc);
3142
3143 len = sprintf(page,
3144 " %08x %03d %05d %1d %09lu %05d/%05d %09lu %05d/%05d\n",
3145 (u32)(unsigned long)vcc,
3146 vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
3147 fore200e_vcc->tx_pdu,
3148 fore200e_vcc->tx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->tx_min_pdu,
3149 fore200e_vcc->tx_max_pdu,
3150 fore200e_vcc->rx_pdu,
3151 fore200e_vcc->rx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->rx_min_pdu,
3152 fore200e_vcc->rx_max_pdu);
3153
3154 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3155 return len;
3156 }
3157
3158 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3159 }
3160
3161 return 0;
3162 }
3163
3164 module_init(fore200e_module_init);
3165 module_exit(fore200e_module_cleanup);
3166
3167
3168 static const struct atmdev_ops fore200e_ops =
3169 {
3170 .open = fore200e_open,
3171 .close = fore200e_close,
3172 .ioctl = fore200e_ioctl,
3173 .getsockopt = fore200e_getsockopt,
3174 .setsockopt = fore200e_setsockopt,
3175 .send = fore200e_send,
3176 .change_qos = fore200e_change_qos,
3177 .proc_read = fore200e_proc_read,
3178 .owner = THIS_MODULE
3179 };
3180
3181
3182 #ifdef CONFIG_ATM_FORE200E_PCA
3183 extern const unsigned char _fore200e_pca_fw_data[];
3184 extern const unsigned int _fore200e_pca_fw_size;
3185 #endif
3186 #ifdef CONFIG_ATM_FORE200E_SBA
3187 extern const unsigned char _fore200e_sba_fw_data[];
3188 extern const unsigned int _fore200e_sba_fw_size;
3189 #endif
3190
3191 static const struct fore200e_bus fore200e_bus[] = {
3192 #ifdef CONFIG_ATM_FORE200E_PCA
3193 { "PCA-200E", "pca200e", 32, 4, 32,
3194 _fore200e_pca_fw_data, &_fore200e_pca_fw_size,
3195 fore200e_pca_read,
3196 fore200e_pca_write,
3197 fore200e_pca_dma_map,
3198 fore200e_pca_dma_unmap,
3199 fore200e_pca_dma_sync_for_cpu,
3200 fore200e_pca_dma_sync_for_device,
3201 fore200e_pca_dma_chunk_alloc,
3202 fore200e_pca_dma_chunk_free,
3203 NULL,
3204 fore200e_pca_configure,
3205 fore200e_pca_map,
3206 fore200e_pca_reset,
3207 fore200e_pca_prom_read,
3208 fore200e_pca_unmap,
3209 NULL,
3210 fore200e_pca_irq_check,
3211 fore200e_pca_irq_ack,
3212 fore200e_pca_proc_read,
3213 },
3214 #endif
3215 #ifdef CONFIG_ATM_FORE200E_SBA
3216 { "SBA-200E", "sba200e", 32, 64, 32,
3217 _fore200e_sba_fw_data, &_fore200e_sba_fw_size,
3218 fore200e_sba_read,
3219 fore200e_sba_write,
3220 fore200e_sba_dma_map,
3221 fore200e_sba_dma_unmap,
3222 fore200e_sba_dma_sync_for_cpu,
3223 fore200e_sba_dma_sync_for_device,
3224 fore200e_sba_dma_chunk_alloc,
3225 fore200e_sba_dma_chunk_free,
3226 fore200e_sba_detect,
3227 fore200e_sba_configure,
3228 fore200e_sba_map,
3229 fore200e_sba_reset,
3230 fore200e_sba_prom_read,
3231 fore200e_sba_unmap,
3232 fore200e_sba_irq_enable,
3233 fore200e_sba_irq_check,
3234 fore200e_sba_irq_ack,
3235 fore200e_sba_proc_read,
3236 },
3237 #endif
3238 {}
3239 };
3240
3241 #ifdef MODULE_LICENSE
3242 MODULE_LICENSE("GPL");
3243 #endif
Linux with added FPC-III support