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inotify: fix race
[linux-2.6.22.y-op.git] / drivers / atm / fore200e.c
blob405ee5e092211ee8078ff80adbc4fbaa5cd928b7
1 /*
2 A FORE Systems 200E-series driver for ATM on Linux.
3 Christophe Lizzi (lizzi@cnam.fr), October 1999-March 2003.
4
5 Based on the PCA-200E driver from Uwe Dannowski (Uwe.Dannowski@inf.tu-dresden.de).
6
7 This driver simultaneously supports PCA-200E and SBA-200E adapters
8 on i386, alpha (untested), powerpc, sparc and sparc64 architectures.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/init.h>
29 #include <linux/capability.h>
30 #include <linux/interrupt.h>
31 #include <linux/bitops.h>
32 #include <linux/pci.h>
33 #include <linux/module.h>
34 #include <linux/atmdev.h>
35 #include <linux/sonet.h>
36 #include <linux/atm_suni.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/delay.h>
39 #include <asm/io.h>
40 #include <asm/string.h>
41 #include <asm/page.h>
42 #include <asm/irq.h>
43 #include <asm/dma.h>
44 #include <asm/byteorder.h>
45 #include <asm/uaccess.h>
46 #include <asm/atomic.h>
47
48 #ifdef CONFIG_ATM_FORE200E_SBA
49 #include <asm/idprom.h>
50 #include <asm/sbus.h>
51 #include <asm/openprom.h>
52 #include <asm/oplib.h>
53 #include <asm/pgtable.h>
54 #endif
55
56 #if defined(CONFIG_ATM_FORE200E_USE_TASKLET) /* defer interrupt work to a tasklet */
57 #define FORE200E_USE_TASKLET
58 #endif
59
60 #if 0 /* enable the debugging code of the buffer supply queues */
61 #define FORE200E_BSQ_DEBUG
62 #endif
63
64 #if 1 /* ensure correct handling of 52-byte AAL0 SDUs expected by atmdump-like apps */
65 #define FORE200E_52BYTE_AAL0_SDU
66 #endif
67
68 #include "fore200e.h"
69 #include "suni.h"
70
71 #define FORE200E_VERSION "0.3e"
72
73 #define FORE200E "fore200e: "
74
75 #if 0 /* override .config */
76 #define CONFIG_ATM_FORE200E_DEBUG 1
77 #endif
78 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
79 #define DPRINTK(level, format, args...) do { if (CONFIG_ATM_FORE200E_DEBUG >= (level)) \
80 printk(FORE200E format, ##args); } while (0)
81 #else
82 #define DPRINTK(level, format, args...) do {} while (0)
83 #endif
84
85
86 #define FORE200E_ALIGN(addr, alignment) \
87 ((((unsigned long)(addr) + (alignment - 1)) & ~(alignment - 1)) - (unsigned long)(addr))
88
89 #define FORE200E_DMA_INDEX(dma_addr, type, index) ((dma_addr) + (index) * sizeof(type))
90
91 #define FORE200E_INDEX(virt_addr, type, index) (&((type *)(virt_addr))[ index ])
92
93 #define FORE200E_NEXT_ENTRY(index, modulo) (index = ++(index) % (modulo))
94
95 #if 1
96 #define ASSERT(expr) if (!(expr)) { \
97 printk(FORE200E "assertion failed! %s[%d]: %s\n", \
98 __FUNCTION__, __LINE__, #expr); \
99 panic(FORE200E "%s", __FUNCTION__); \
100 }
101 #else
102 #define ASSERT(expr) do {} while (0)
103 #endif
104
105
106 static const struct atmdev_ops fore200e_ops;
107 static const struct fore200e_bus fore200e_bus[];
108
109 static LIST_HEAD(fore200e_boards);
110
111
112 MODULE_AUTHOR("Christophe Lizzi - credits to Uwe Dannowski and Heikki Vatiainen");
113 MODULE_DESCRIPTION("FORE Systems 200E-series ATM driver - version " FORE200E_VERSION);
114 MODULE_SUPPORTED_DEVICE("PCA-200E, SBA-200E");
115
116
117 static const int fore200e_rx_buf_nbr[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
118 { BUFFER_S1_NBR, BUFFER_L1_NBR },
119 { BUFFER_S2_NBR, BUFFER_L2_NBR }
120 };
121
122 static const int fore200e_rx_buf_size[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
123 { BUFFER_S1_SIZE, BUFFER_L1_SIZE },
124 { BUFFER_S2_SIZE, BUFFER_L2_SIZE }
125 };
126
127
128 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
129 static const char* fore200e_traffic_class[] = { "NONE", "UBR", "CBR", "VBR", "ABR", "ANY" };
130 #endif
131
132
133 #if 0 /* currently unused */
134 static int
135 fore200e_fore2atm_aal(enum fore200e_aal aal)
136 {
137 switch(aal) {
138 case FORE200E_AAL0: return ATM_AAL0;
139 case FORE200E_AAL34: return ATM_AAL34;
140 case FORE200E_AAL5: return ATM_AAL5;
141 }
142
143 return -EINVAL;
144 }
145 #endif
146
147
148 static enum fore200e_aal
149 fore200e_atm2fore_aal(int aal)
150 {
151 switch(aal) {
152 case ATM_AAL0: return FORE200E_AAL0;
153 case ATM_AAL34: return FORE200E_AAL34;
154 case ATM_AAL1:
155 case ATM_AAL2:
156 case ATM_AAL5: return FORE200E_AAL5;
157 }
158
159 return -EINVAL;
160 }
161
162
163 static char*
164 fore200e_irq_itoa(int irq)
165 {
166 static char str[8];
167 sprintf(str, "%d", irq);
168 return str;
169 }
170
171
172 /* allocate and align a chunk of memory intended to hold the data behing exchanged
173 between the driver and the adapter (using streaming DVMA) */
174
175 static int
176 fore200e_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, int size, int alignment, int direction)
177 {
178 unsigned long offset = 0;
179
180 if (alignment <= sizeof(int))
181 alignment = 0;
182
183 chunk->alloc_size = size + alignment;
184 chunk->align_size = size;
185 chunk->direction = direction;
186
187 chunk->alloc_addr = kzalloc(chunk->alloc_size, GFP_KERNEL | GFP_DMA);
188 if (chunk->alloc_addr == NULL)
189 return -ENOMEM;
190
191 if (alignment > 0)
192 offset = FORE200E_ALIGN(chunk->alloc_addr, alignment);
193
194 chunk->align_addr = chunk->alloc_addr + offset;
195
196 chunk->dma_addr = fore200e->bus->dma_map(fore200e, chunk->align_addr, chunk->align_size, direction);
197
198 return 0;
199 }
200
201
202 /* free a chunk of memory */
203
204 static void
205 fore200e_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
206 {
207 fore200e->bus->dma_unmap(fore200e, chunk->dma_addr, chunk->dma_size, chunk->direction);
208
209 kfree(chunk->alloc_addr);
210 }
211
212
213 static void
214 fore200e_spin(int msecs)
215 {
216 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
217 while (time_before(jiffies, timeout));
218 }
219
220
221 static int
222 fore200e_poll(struct fore200e* fore200e, volatile u32* addr, u32 val, int msecs)
223 {
224 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
225 int ok;
226
227 mb();
228 do {
229 if ((ok = (*addr == val)) || (*addr & STATUS_ERROR))
230 break;
231
232 } while (time_before(jiffies, timeout));
233
234 #if 1
235 if (!ok) {
236 printk(FORE200E "cmd polling failed, got status 0x%08x, expected 0x%08x\n",
237 *addr, val);
238 }
239 #endif
240
241 return ok;
242 }
243
244
245 static int
246 fore200e_io_poll(struct fore200e* fore200e, volatile u32 __iomem *addr, u32 val, int msecs)
247 {
248 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
249 int ok;
250
251 do {
252 if ((ok = (fore200e->bus->read(addr) == val)))
253 break;
254
255 } while (time_before(jiffies, timeout));
256
257 #if 1
258 if (!ok) {
259 printk(FORE200E "I/O polling failed, got status 0x%08x, expected 0x%08x\n",
260 fore200e->bus->read(addr), val);
261 }
262 #endif
263
264 return ok;
265 }
266
267
268 static void
269 fore200e_free_rx_buf(struct fore200e* fore200e)
270 {
271 int scheme, magn, nbr;
272 struct buffer* buffer;
273
274 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
275 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
276
277 if ((buffer = fore200e->host_bsq[ scheme ][ magn ].buffer) != NULL) {
278
279 for (nbr = 0; nbr < fore200e_rx_buf_nbr[ scheme ][ magn ]; nbr++) {
280
281 struct chunk* data = &buffer[ nbr ].data;
282
283 if (data->alloc_addr != NULL)
284 fore200e_chunk_free(fore200e, data);
285 }
286 }
287 }
288 }
289 }
290
291
292 static void
293 fore200e_uninit_bs_queue(struct fore200e* fore200e)
294 {
295 int scheme, magn;
296
297 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
298 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
299
300 struct chunk* status = &fore200e->host_bsq[ scheme ][ magn ].status;
301 struct chunk* rbd_block = &fore200e->host_bsq[ scheme ][ magn ].rbd_block;
302
303 if (status->alloc_addr)
304 fore200e->bus->dma_chunk_free(fore200e, status);
305
306 if (rbd_block->alloc_addr)
307 fore200e->bus->dma_chunk_free(fore200e, rbd_block);
308 }
309 }
310 }
311
312
313 static int
314 fore200e_reset(struct fore200e* fore200e, int diag)
315 {
316 int ok;
317
318 fore200e->cp_monitor = fore200e->virt_base + FORE200E_CP_MONITOR_OFFSET;
319
320 fore200e->bus->write(BSTAT_COLD_START, &fore200e->cp_monitor->bstat);
321
322 fore200e->bus->reset(fore200e);
323
324 if (diag) {
325 ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_SELFTEST_OK, 1000);
326 if (ok == 0) {
327
328 printk(FORE200E "device %s self-test failed\n", fore200e->name);
329 return -ENODEV;
330 }
331
332 printk(FORE200E "device %s self-test passed\n", fore200e->name);
333
334 fore200e->state = FORE200E_STATE_RESET;
335 }
336
337 return 0;
338 }
339
340
341 static void
342 fore200e_shutdown(struct fore200e* fore200e)
343 {
344 printk(FORE200E "removing device %s at 0x%lx, IRQ %s\n",
345 fore200e->name, fore200e->phys_base,
346 fore200e_irq_itoa(fore200e->irq));
347
348 if (fore200e->state > FORE200E_STATE_RESET) {
349 /* first, reset the board to prevent further interrupts or data transfers */
350 fore200e_reset(fore200e, 0);
351 }
352
353 /* then, release all allocated resources */
354 switch(fore200e->state) {
355
356 case FORE200E_STATE_COMPLETE:
357 kfree(fore200e->stats);
358
359 case FORE200E_STATE_IRQ:
360 free_irq(fore200e->irq, fore200e->atm_dev);
361
362 case FORE200E_STATE_ALLOC_BUF:
363 fore200e_free_rx_buf(fore200e);
364
365 case FORE200E_STATE_INIT_BSQ:
366 fore200e_uninit_bs_queue(fore200e);
367
368 case FORE200E_STATE_INIT_RXQ:
369 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.status);
370 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.rpd);
371
372 case FORE200E_STATE_INIT_TXQ:
373 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.status);
374 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.tpd);
375
376 case FORE200E_STATE_INIT_CMDQ:
377 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_cmdq.status);
378
379 case FORE200E_STATE_INITIALIZE:
380 /* nothing to do for that state */
381
382 case FORE200E_STATE_START_FW:
383 /* nothing to do for that state */
384
385 case FORE200E_STATE_LOAD_FW:
386 /* nothing to do for that state */
387
388 case FORE200E_STATE_RESET:
389 /* nothing to do for that state */
390
391 case FORE200E_STATE_MAP:
392 fore200e->bus->unmap(fore200e);
393
394 case FORE200E_STATE_CONFIGURE:
395 /* nothing to do for that state */
396
397 case FORE200E_STATE_REGISTER:
398 /* XXX shouldn't we *start* by deregistering the device? */
399 atm_dev_deregister(fore200e->atm_dev);
400
401 case FORE200E_STATE_BLANK:
402 /* nothing to do for that state */
403 break;
404 }
405 }
406
407
408 #ifdef CONFIG_ATM_FORE200E_PCA
409
410 static u32 fore200e_pca_read(volatile u32 __iomem *addr)
411 {
412 /* on big-endian hosts, the board is configured to convert
413 the endianess of slave RAM accesses */
414 return le32_to_cpu(readl(addr));
415 }
416
417
418 static void fore200e_pca_write(u32 val, volatile u32 __iomem *addr)
419 {
420 /* on big-endian hosts, the board is configured to convert
421 the endianess of slave RAM accesses */
422 writel(cpu_to_le32(val), addr);
423 }
424
425
426 static u32
427 fore200e_pca_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
428 {
429 u32 dma_addr = pci_map_single((struct pci_dev*)fore200e->bus_dev, virt_addr, size, direction);
430
431 DPRINTK(3, "PCI DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d, --> dma_addr = 0x%08x\n",
432 virt_addr, size, direction, dma_addr);
433
434 return dma_addr;
435 }
436
437
438 static void
439 fore200e_pca_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
440 {
441 DPRINTK(3, "PCI DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d\n",
442 dma_addr, size, direction);
443
444 pci_unmap_single((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
445 }
446
447
448 static void
449 fore200e_pca_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
450 {
451 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
452
453 pci_dma_sync_single_for_cpu((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
454 }
455
456 static void
457 fore200e_pca_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
458 {
459 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
460
461 pci_dma_sync_single_for_device((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
462 }
463
464
465 /* allocate a DMA consistent chunk of memory intended to act as a communication mechanism
466 (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
467
468 static int
469 fore200e_pca_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
470 int size, int nbr, int alignment)
471 {
472 /* returned chunks are page-aligned */
473 chunk->alloc_size = size * nbr;
474 chunk->alloc_addr = pci_alloc_consistent((struct pci_dev*)fore200e->bus_dev,
475 chunk->alloc_size,
476 &chunk->dma_addr);
477
478 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
479 return -ENOMEM;
480
481 chunk->align_addr = chunk->alloc_addr;
482
483 return 0;
484 }
485
486
487 /* free a DMA consistent chunk of memory */
488
489 static void
490 fore200e_pca_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
491 {
492 pci_free_consistent((struct pci_dev*)fore200e->bus_dev,
493 chunk->alloc_size,
494 chunk->alloc_addr,
495 chunk->dma_addr);
496 }
497
498
499 static int
500 fore200e_pca_irq_check(struct fore200e* fore200e)
501 {
502 /* this is a 1 bit register */
503 int irq_posted = readl(fore200e->regs.pca.psr);
504
505 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG == 2)
506 if (irq_posted && (readl(fore200e->regs.pca.hcr) & PCA200E_HCR_OUTFULL)) {
507 DPRINTK(2,"FIFO OUT full, device %d\n", fore200e->atm_dev->number);
508 }
509 #endif
510
511 return irq_posted;
512 }
513
514
515 static void
516 fore200e_pca_irq_ack(struct fore200e* fore200e)
517 {
518 writel(PCA200E_HCR_CLRINTR, fore200e->regs.pca.hcr);
519 }
520
521
522 static void
523 fore200e_pca_reset(struct fore200e* fore200e)
524 {
525 writel(PCA200E_HCR_RESET, fore200e->regs.pca.hcr);
526 fore200e_spin(10);
527 writel(0, fore200e->regs.pca.hcr);
528 }
529
530
531 static int __devinit
532 fore200e_pca_map(struct fore200e* fore200e)
533 {
534 DPRINTK(2, "device %s being mapped in memory\n", fore200e->name);
535
536 fore200e->virt_base = ioremap(fore200e->phys_base, PCA200E_IOSPACE_LENGTH);
537
538 if (fore200e->virt_base == NULL) {
539 printk(FORE200E "can't map device %s\n", fore200e->name);
540 return -EFAULT;
541 }
542
543 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
544
545 /* gain access to the PCA specific registers */
546 fore200e->regs.pca.hcr = fore200e->virt_base + PCA200E_HCR_OFFSET;
547 fore200e->regs.pca.imr = fore200e->virt_base + PCA200E_IMR_OFFSET;
548 fore200e->regs.pca.psr = fore200e->virt_base + PCA200E_PSR_OFFSET;
549
550 fore200e->state = FORE200E_STATE_MAP;
551 return 0;
552 }
553
554
555 static void
556 fore200e_pca_unmap(struct fore200e* fore200e)
557 {
558 DPRINTK(2, "device %s being unmapped from memory\n", fore200e->name);
559
560 if (fore200e->virt_base != NULL)
561 iounmap(fore200e->virt_base);
562 }
563
564
565 static int __devinit
566 fore200e_pca_configure(struct fore200e* fore200e)
567 {
568 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
569 u8 master_ctrl, latency;
570
571 DPRINTK(2, "device %s being configured\n", fore200e->name);
572
573 if ((pci_dev->irq == 0) || (pci_dev->irq == 0xFF)) {
574 printk(FORE200E "incorrect IRQ setting - misconfigured PCI-PCI bridge?\n");
575 return -EIO;
576 }
577
578 pci_read_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, &master_ctrl);
579
580 master_ctrl = master_ctrl
581 #if defined(__BIG_ENDIAN)
582 /* request the PCA board to convert the endianess of slave RAM accesses */
583 | PCA200E_CTRL_CONVERT_ENDIAN
584 #endif
585 #if 0
586 | PCA200E_CTRL_DIS_CACHE_RD
587 | PCA200E_CTRL_DIS_WRT_INVAL
588 | PCA200E_CTRL_ENA_CONT_REQ_MODE
589 | PCA200E_CTRL_2_CACHE_WRT_INVAL
590 #endif
591 | PCA200E_CTRL_LARGE_PCI_BURSTS;
592
593 pci_write_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, master_ctrl);
594
595 /* raise latency from 32 (default) to 192, as this seems to prevent NIC
596 lockups (under heavy rx loads) due to continuous 'FIFO OUT full' condition.
597 this may impact the performances of other PCI devices on the same bus, though */
598 latency = 192;
599 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
600
601 fore200e->state = FORE200E_STATE_CONFIGURE;
602 return 0;
603 }
604
605
606 static int __init
607 fore200e_pca_prom_read(struct fore200e* fore200e, struct prom_data* prom)
608 {
609 struct host_cmdq* cmdq = &fore200e->host_cmdq;
610 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
611 struct prom_opcode opcode;
612 int ok;
613 u32 prom_dma;
614
615 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
616
617 opcode.opcode = OPCODE_GET_PROM;
618 opcode.pad = 0;
619
620 prom_dma = fore200e->bus->dma_map(fore200e, prom, sizeof(struct prom_data), DMA_FROM_DEVICE);
621
622 fore200e->bus->write(prom_dma, &entry->cp_entry->cmd.prom_block.prom_haddr);
623
624 *entry->status = STATUS_PENDING;
625
626 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.prom_block.opcode);
627
628 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
629
630 *entry->status = STATUS_FREE;
631
632 fore200e->bus->dma_unmap(fore200e, prom_dma, sizeof(struct prom_data), DMA_FROM_DEVICE);
633
634 if (ok == 0) {
635 printk(FORE200E "unable to get PROM data from device %s\n", fore200e->name);
636 return -EIO;
637 }
638
639 #if defined(__BIG_ENDIAN)
640
641 #define swap_here(addr) (*((u32*)(addr)) = swab32( *((u32*)(addr)) ))
642
643 /* MAC address is stored as little-endian */
644 swap_here(&prom->mac_addr[0]);
645 swap_here(&prom->mac_addr[4]);
646 #endif
647
648 return 0;
649 }
650
651
652 static int
653 fore200e_pca_proc_read(struct fore200e* fore200e, char *page)
654 {
655 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
656
657 return sprintf(page, " PCI bus/slot/function:\t%d/%d/%d\n",
658 pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
659 }
660
661 #endif /* CONFIG_ATM_FORE200E_PCA */
662
663
664 #ifdef CONFIG_ATM_FORE200E_SBA
665
666 static u32
667 fore200e_sba_read(volatile u32 __iomem *addr)
668 {
669 return sbus_readl(addr);
670 }
671
672
673 static void
674 fore200e_sba_write(u32 val, volatile u32 __iomem *addr)
675 {
676 sbus_writel(val, addr);
677 }
678
679
680 static u32
681 fore200e_sba_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
682 {
683 u32 dma_addr = sbus_map_single((struct sbus_dev*)fore200e->bus_dev, virt_addr, size, direction);
684
685 DPRINTK(3, "SBUS DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d --> dma_addr = 0x%08x\n",
686 virt_addr, size, direction, dma_addr);
687
688 return dma_addr;
689 }
690
691
692 static void
693 fore200e_sba_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
694 {
695 DPRINTK(3, "SBUS DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d,\n",
696 dma_addr, size, direction);
697
698 sbus_unmap_single((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
699 }
700
701
702 static void
703 fore200e_sba_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
704 {
705 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
706
707 sbus_dma_sync_single_for_cpu((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
708 }
709
710 static void
711 fore200e_sba_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
712 {
713 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
714
715 sbus_dma_sync_single_for_device((struct sbus_dev*)fore200e->bus_dev, dma_addr, size, direction);
716 }
717
718
719 /* allocate a DVMA consistent chunk of memory intended to act as a communication mechanism
720 (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
721
722 static int
723 fore200e_sba_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
724 int size, int nbr, int alignment)
725 {
726 chunk->alloc_size = chunk->align_size = size * nbr;
727
728 /* returned chunks are page-aligned */
729 chunk->alloc_addr = sbus_alloc_consistent((struct sbus_dev*)fore200e->bus_dev,
730 chunk->alloc_size,
731 &chunk->dma_addr);
732
733 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
734 return -ENOMEM;
735
736 chunk->align_addr = chunk->alloc_addr;
737
738 return 0;
739 }
740
741
742 /* free a DVMA consistent chunk of memory */
743
744 static void
745 fore200e_sba_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
746 {
747 sbus_free_consistent((struct sbus_dev*)fore200e->bus_dev,
748 chunk->alloc_size,
749 chunk->alloc_addr,
750 chunk->dma_addr);
751 }
752
753
754 static void
755 fore200e_sba_irq_enable(struct fore200e* fore200e)
756 {
757 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
758 fore200e->bus->write(hcr | SBA200E_HCR_INTR_ENA, fore200e->regs.sba.hcr);
759 }
760
761
762 static int
763 fore200e_sba_irq_check(struct fore200e* fore200e)
764 {
765 return fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_INTR_REQ;
766 }
767
768
769 static void
770 fore200e_sba_irq_ack(struct fore200e* fore200e)
771 {
772 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
773 fore200e->bus->write(hcr | SBA200E_HCR_INTR_CLR, fore200e->regs.sba.hcr);
774 }
775
776
777 static void
778 fore200e_sba_reset(struct fore200e* fore200e)
779 {
780 fore200e->bus->write(SBA200E_HCR_RESET, fore200e->regs.sba.hcr);
781 fore200e_spin(10);
782 fore200e->bus->write(0, fore200e->regs.sba.hcr);
783 }
784
785
786 static int __init
787 fore200e_sba_map(struct fore200e* fore200e)
788 {
789 struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
790 unsigned int bursts;
791
792 /* gain access to the SBA specific registers */
793 fore200e->regs.sba.hcr = sbus_ioremap(&sbus_dev->resource[0], 0, SBA200E_HCR_LENGTH, "SBA HCR");
794 fore200e->regs.sba.bsr = sbus_ioremap(&sbus_dev->resource[1], 0, SBA200E_BSR_LENGTH, "SBA BSR");
795 fore200e->regs.sba.isr = sbus_ioremap(&sbus_dev->resource[2], 0, SBA200E_ISR_LENGTH, "SBA ISR");
796 fore200e->virt_base = sbus_ioremap(&sbus_dev->resource[3], 0, SBA200E_RAM_LENGTH, "SBA RAM");
797
798 if (fore200e->virt_base == NULL) {
799 printk(FORE200E "unable to map RAM of device %s\n", fore200e->name);
800 return -EFAULT;
801 }
802
803 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
804
805 fore200e->bus->write(0x02, fore200e->regs.sba.isr); /* XXX hardwired interrupt level */
806
807 /* get the supported DVMA burst sizes */
808 bursts = prom_getintdefault(sbus_dev->bus->prom_node, "burst-sizes", 0x00);
809
810 if (sbus_can_dma_64bit(sbus_dev))
811 sbus_set_sbus64(sbus_dev, bursts);
812
813 fore200e->state = FORE200E_STATE_MAP;
814 return 0;
815 }
816
817
818 static void
819 fore200e_sba_unmap(struct fore200e* fore200e)
820 {
821 sbus_iounmap(fore200e->regs.sba.hcr, SBA200E_HCR_LENGTH);
822 sbus_iounmap(fore200e->regs.sba.bsr, SBA200E_BSR_LENGTH);
823 sbus_iounmap(fore200e->regs.sba.isr, SBA200E_ISR_LENGTH);
824 sbus_iounmap(fore200e->virt_base, SBA200E_RAM_LENGTH);
825 }
826
827
828 static int __init
829 fore200e_sba_configure(struct fore200e* fore200e)
830 {
831 fore200e->state = FORE200E_STATE_CONFIGURE;
832 return 0;
833 }
834
835
836 static struct fore200e* __init
837 fore200e_sba_detect(const struct fore200e_bus* bus, int index)
838 {
839 struct fore200e* fore200e;
840 struct sbus_bus* sbus_bus;
841 struct sbus_dev* sbus_dev = NULL;
842
843 unsigned int count = 0;
844
845 for_each_sbus (sbus_bus) {
846 for_each_sbusdev (sbus_dev, sbus_bus) {
847 if (strcmp(sbus_dev->prom_name, SBA200E_PROM_NAME) == 0) {
848 if (count >= index)
849 goto found;
850 count++;
851 }
852 }
853 }
854 return NULL;
855
856 found:
857 if (sbus_dev->num_registers != 4) {
858 printk(FORE200E "this %s device has %d instead of 4 registers\n",
859 bus->model_name, sbus_dev->num_registers);
860 return NULL;
861 }
862
863 fore200e = kzalloc(sizeof(struct fore200e), GFP_KERNEL);
864 if (fore200e == NULL)
865 return NULL;
866
867 fore200e->bus = bus;
868 fore200e->bus_dev = sbus_dev;
869 fore200e->irq = sbus_dev->irqs[ 0 ];
870
871 fore200e->phys_base = (unsigned long)sbus_dev;
872
873 sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
874
875 return fore200e;
876 }
877
878
879 static int __init
880 fore200e_sba_prom_read(struct fore200e* fore200e, struct prom_data* prom)
881 {
882 struct sbus_dev* sbus_dev = (struct sbus_dev*) fore200e->bus_dev;
883 int len;
884
885 len = prom_getproperty(sbus_dev->prom_node, "macaddrlo2", &prom->mac_addr[ 4 ], 4);
886 if (len < 0)
887 return -EBUSY;
888
889 len = prom_getproperty(sbus_dev->prom_node, "macaddrhi4", &prom->mac_addr[ 2 ], 4);
890 if (len < 0)
891 return -EBUSY;
892
893 prom_getproperty(sbus_dev->prom_node, "serialnumber",
894 (char*)&prom->serial_number, sizeof(prom->serial_number));
895
896 prom_getproperty(sbus_dev->prom_node, "promversion",
897 (char*)&prom->hw_revision, sizeof(prom->hw_revision));
898
899 return 0;
900 }
901
902
903 static int
904 fore200e_sba_proc_read(struct fore200e* fore200e, char *page)
905 {
906 struct sbus_dev* sbus_dev = (struct sbus_dev*)fore200e->bus_dev;
907
908 return sprintf(page, " SBUS slot/device:\t\t%d/'%s'\n", sbus_dev->slot, sbus_dev->prom_name);
909 }
910 #endif /* CONFIG_ATM_FORE200E_SBA */
911
912
913 static void
914 fore200e_tx_irq(struct fore200e* fore200e)
915 {
916 struct host_txq* txq = &fore200e->host_txq;
917 struct host_txq_entry* entry;
918 struct atm_vcc* vcc;
919 struct fore200e_vc_map* vc_map;
920
921 if (fore200e->host_txq.txing == 0)
922 return;
923
924 for (;;) {
925
926 entry = &txq->host_entry[ txq->tail ];
927
928 if ((*entry->status & STATUS_COMPLETE) == 0) {
929 break;
930 }
931
932 DPRINTK(3, "TX COMPLETED: entry = %p [tail = %d], vc_map = %p, skb = %p\n",
933 entry, txq->tail, entry->vc_map, entry->skb);
934
935 /* free copy of misaligned data */
936 kfree(entry->data);
937
938 /* remove DMA mapping */
939 fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,
940 DMA_TO_DEVICE);
941
942 vc_map = entry->vc_map;
943
944 /* vcc closed since the time the entry was submitted for tx? */
945 if ((vc_map->vcc == NULL) ||
946 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
947
948 DPRINTK(1, "no ready vcc found for PDU sent on device %d\n",
949 fore200e->atm_dev->number);
950
951 dev_kfree_skb_any(entry->skb);
952 }
953 else {
954 ASSERT(vc_map->vcc);
955
956 /* vcc closed then immediately re-opened? */
957 if (vc_map->incarn != entry->incarn) {
958
959 /* when a vcc is closed, some PDUs may be still pending in the tx queue.
960 if the same vcc is immediately re-opened, those pending PDUs must
961 not be popped after the completion of their emission, as they refer
962 to the prior incarnation of that vcc. otherwise, sk_atm(vcc)->sk_wmem_alloc
963 would be decremented by the size of the (unrelated) skb, possibly
964 leading to a negative sk->sk_wmem_alloc count, ultimately freezing the vcc.
965 we thus bind the tx entry to the current incarnation of the vcc
966 when the entry is submitted for tx. When the tx later completes,
967 if the incarnation number of the tx entry does not match the one
968 of the vcc, then this implies that the vcc has been closed then re-opened.
969 we thus just drop the skb here. */
970
971 DPRINTK(1, "vcc closed-then-re-opened; dropping PDU sent on device %d\n",
972 fore200e->atm_dev->number);
973
974 dev_kfree_skb_any(entry->skb);
975 }
976 else {
977 vcc = vc_map->vcc;
978 ASSERT(vcc);
979
980 /* notify tx completion */
981 if (vcc->pop) {
982 vcc->pop(vcc, entry->skb);
983 }
984 else {
985 dev_kfree_skb_any(entry->skb);
986 }
987 #if 1
988 /* race fixed by the above incarnation mechanism, but... */
989 if (atomic_read(&sk_atm(vcc)->sk_wmem_alloc) < 0) {
990 atomic_set(&sk_atm(vcc)->sk_wmem_alloc, 0);
991 }
992 #endif
993 /* check error condition */
994 if (*entry->status & STATUS_ERROR)
995 atomic_inc(&vcc->stats->tx_err);
996 else
997 atomic_inc(&vcc->stats->tx);
998 }
999 }
1000
1001 *entry->status = STATUS_FREE;
1002
1003 fore200e->host_txq.txing--;
1004
1005 FORE200E_NEXT_ENTRY(txq->tail, QUEUE_SIZE_TX);
1006 }
1007 }
1008
1009
1010 #ifdef FORE200E_BSQ_DEBUG
1011 int bsq_audit(int where, struct host_bsq* bsq, int scheme, int magn)
1012 {
1013 struct buffer* buffer;
1014 int count = 0;
1015
1016 buffer = bsq->freebuf;
1017 while (buffer) {
1018
1019 if (buffer->supplied) {
1020 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld supplied but in free list!\n",
1021 where, scheme, magn, buffer->index);
1022 }
1023
1024 if (buffer->magn != magn) {
1025 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected magn = %d\n",
1026 where, scheme, magn, buffer->index, buffer->magn);
1027 }
1028
1029 if (buffer->scheme != scheme) {
1030 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected scheme = %d\n",
1031 where, scheme, magn, buffer->index, buffer->scheme);
1032 }
1033
1034 if ((buffer->index < 0) || (buffer->index >= fore200e_rx_buf_nbr[ scheme ][ magn ])) {
1035 printk(FORE200E "bsq_audit(%d): queue %d.%d, out of range buffer index = %ld !\n",
1036 where, scheme, magn, buffer->index);
1037 }
1038
1039 count++;
1040 buffer = buffer->next;
1041 }
1042
1043 if (count != bsq->freebuf_count) {
1044 printk(FORE200E "bsq_audit(%d): queue %d.%d, %d bufs in free list, but freebuf_count = %d\n",
1045 where, scheme, magn, count, bsq->freebuf_count);
1046 }
1047 return 0;
1048 }
1049 #endif
1050
1051
1052 static void
1053 fore200e_supply(struct fore200e* fore200e)
1054 {
1055 int scheme, magn, i;
1056
1057 struct host_bsq* bsq;
1058 struct host_bsq_entry* entry;
1059 struct buffer* buffer;
1060
1061 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
1062 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
1063
1064 bsq = &fore200e->host_bsq[ scheme ][ magn ];
1065
1066 #ifdef FORE200E_BSQ_DEBUG
1067 bsq_audit(1, bsq, scheme, magn);
1068 #endif
1069 while (bsq->freebuf_count >= RBD_BLK_SIZE) {
1070
1071 DPRINTK(2, "supplying %d rx buffers to queue %d / %d, freebuf_count = %d\n",
1072 RBD_BLK_SIZE, scheme, magn, bsq->freebuf_count);
1073
1074 entry = &bsq->host_entry[ bsq->head ];
1075
1076 for (i = 0; i < RBD_BLK_SIZE; i++) {
1077
1078 /* take the first buffer in the free buffer list */
1079 buffer = bsq->freebuf;
1080 if (!buffer) {
1081 printk(FORE200E "no more free bufs in queue %d.%d, but freebuf_count = %d\n",
1082 scheme, magn, bsq->freebuf_count);
1083 return;
1084 }
1085 bsq->freebuf = buffer->next;
1086
1087 #ifdef FORE200E_BSQ_DEBUG
1088 if (buffer->supplied)
1089 printk(FORE200E "queue %d.%d, buffer %lu already supplied\n",
1090 scheme, magn, buffer->index);
1091 buffer->supplied = 1;
1092 #endif
1093 entry->rbd_block->rbd[ i ].buffer_haddr = buffer->data.dma_addr;
1094 entry->rbd_block->rbd[ i ].handle = FORE200E_BUF2HDL(buffer);
1095 }
1096
1097 FORE200E_NEXT_ENTRY(bsq->head, QUEUE_SIZE_BS);
1098
1099 /* decrease accordingly the number of free rx buffers */
1100 bsq->freebuf_count -= RBD_BLK_SIZE;
1101
1102 *entry->status = STATUS_PENDING;
1103 fore200e->bus->write(entry->rbd_block_dma, &entry->cp_entry->rbd_block_haddr);
1104 }
1105 }
1106 }
1107 }
1108
1109
1110 static int
1111 fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rpd)
1112 {
1113 struct sk_buff* skb;
1114 struct buffer* buffer;
1115 struct fore200e_vcc* fore200e_vcc;
1116 int i, pdu_len = 0;
1117 #ifdef FORE200E_52BYTE_AAL0_SDU
1118 u32 cell_header = 0;
1119 #endif
1120
1121 ASSERT(vcc);
1122
1123 fore200e_vcc = FORE200E_VCC(vcc);
1124 ASSERT(fore200e_vcc);
1125
1126 #ifdef FORE200E_52BYTE_AAL0_SDU
1127 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.rxtp.max_sdu == ATM_AAL0_SDU)) {
1128
1129 cell_header = (rpd->atm_header.gfc << ATM_HDR_GFC_SHIFT) |
1130 (rpd->atm_header.vpi << ATM_HDR_VPI_SHIFT) |
1131 (rpd->atm_header.vci << ATM_HDR_VCI_SHIFT) |
1132 (rpd->atm_header.plt << ATM_HDR_PTI_SHIFT) |
1133 rpd->atm_header.clp;
1134 pdu_len = 4;
1135 }
1136 #endif
1137
1138 /* compute total PDU length */
1139 for (i = 0; i < rpd->nseg; i++)
1140 pdu_len += rpd->rsd[ i ].length;
1141
1142 skb = alloc_skb(pdu_len, GFP_ATOMIC);
1143 if (skb == NULL) {
1144 DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
1145
1146 atomic_inc(&vcc->stats->rx_drop);
1147 return -ENOMEM;
1148 }
1149
1150 __net_timestamp(skb);
1151
1152 #ifdef FORE200E_52BYTE_AAL0_SDU
1153 if (cell_header) {
1154 *((u32*)skb_put(skb, 4)) = cell_header;
1155 }
1156 #endif
1157
1158 /* reassemble segments */
1159 for (i = 0; i < rpd->nseg; i++) {
1160
1161 /* rebuild rx buffer address from rsd handle */
1162 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1163
1164 /* Make device DMA transfer visible to CPU. */
1165 fore200e->bus->dma_sync_for_cpu(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1166
1167 memcpy(skb_put(skb, rpd->rsd[ i ].length), buffer->data.align_addr, rpd->rsd[ i ].length);
1168
1169 /* Now let the device get at it again. */
1170 fore200e->bus->dma_sync_for_device(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1171 }
1172
1173 DPRINTK(3, "rx skb: len = %d, truesize = %d\n", skb->len, skb->truesize);
1174
1175 if (pdu_len < fore200e_vcc->rx_min_pdu)
1176 fore200e_vcc->rx_min_pdu = pdu_len;
1177 if (pdu_len > fore200e_vcc->rx_max_pdu)
1178 fore200e_vcc->rx_max_pdu = pdu_len;
1179 fore200e_vcc->rx_pdu++;
1180
1181 /* push PDU */
1182 if (atm_charge(vcc, skb->truesize) == 0) {
1183
1184 DPRINTK(2, "receive buffers saturated for %d.%d.%d - PDU dropped\n",
1185 vcc->itf, vcc->vpi, vcc->vci);
1186
1187 dev_kfree_skb_any(skb);
1188
1189 atomic_inc(&vcc->stats->rx_drop);
1190 return -ENOMEM;
1191 }
1192
1193 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1194
1195 vcc->push(vcc, skb);
1196 atomic_inc(&vcc->stats->rx);
1197
1198 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1199
1200 return 0;
1201 }
1202
1203
1204 static void
1205 fore200e_collect_rpd(struct fore200e* fore200e, struct rpd* rpd)
1206 {
1207 struct host_bsq* bsq;
1208 struct buffer* buffer;
1209 int i;
1210
1211 for (i = 0; i < rpd->nseg; i++) {
1212
1213 /* rebuild rx buffer address from rsd handle */
1214 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1215
1216 bsq = &fore200e->host_bsq[ buffer->scheme ][ buffer->magn ];
1217
1218 #ifdef FORE200E_BSQ_DEBUG
1219 bsq_audit(2, bsq, buffer->scheme, buffer->magn);
1220
1221 if (buffer->supplied == 0)
1222 printk(FORE200E "queue %d.%d, buffer %ld was not supplied\n",
1223 buffer->scheme, buffer->magn, buffer->index);
1224 buffer->supplied = 0;
1225 #endif
1226
1227 /* re-insert the buffer into the free buffer list */
1228 buffer->next = bsq->freebuf;
1229 bsq->freebuf = buffer;
1230
1231 /* then increment the number of free rx buffers */
1232 bsq->freebuf_count++;
1233 }
1234 }
1235
1236
1237 static void
1238 fore200e_rx_irq(struct fore200e* fore200e)
1239 {
1240 struct host_rxq* rxq = &fore200e->host_rxq;
1241 struct host_rxq_entry* entry;
1242 struct atm_vcc* vcc;
1243 struct fore200e_vc_map* vc_map;
1244
1245 for (;;) {
1246
1247 entry = &rxq->host_entry[ rxq->head ];
1248
1249 /* no more received PDUs */
1250 if ((*entry->status & STATUS_COMPLETE) == 0)
1251 break;
1252
1253 vc_map = FORE200E_VC_MAP(fore200e, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1254
1255 if ((vc_map->vcc == NULL) ||
1256 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
1257
1258 DPRINTK(1, "no ready VC found for PDU received on %d.%d.%d\n",
1259 fore200e->atm_dev->number,
1260 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1261 }
1262 else {
1263 vcc = vc_map->vcc;
1264 ASSERT(vcc);
1265
1266 if ((*entry->status & STATUS_ERROR) == 0) {
1267
1268 fore200e_push_rpd(fore200e, vcc, entry->rpd);
1269 }
1270 else {
1271 DPRINTK(2, "damaged PDU on %d.%d.%d\n",
1272 fore200e->atm_dev->number,
1273 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1274 atomic_inc(&vcc->stats->rx_err);
1275 }
1276 }
1277
1278 FORE200E_NEXT_ENTRY(rxq->head, QUEUE_SIZE_RX);
1279
1280 fore200e_collect_rpd(fore200e, entry->rpd);
1281
1282 /* rewrite the rpd address to ack the received PDU */
1283 fore200e->bus->write(entry->rpd_dma, &entry->cp_entry->rpd_haddr);
1284 *entry->status = STATUS_FREE;
1285
1286 fore200e_supply(fore200e);
1287 }
1288 }
1289
1290
1291 #ifndef FORE200E_USE_TASKLET
1292 static void
1293 fore200e_irq(struct fore200e* fore200e)
1294 {
1295 unsigned long flags;
1296
1297 spin_lock_irqsave(&fore200e->q_lock, flags);
1298 fore200e_rx_irq(fore200e);
1299 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1300
1301 spin_lock_irqsave(&fore200e->q_lock, flags);
1302 fore200e_tx_irq(fore200e);
1303 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1304 }
1305 #endif
1306
1307
1308 static irqreturn_t
1309 fore200e_interrupt(int irq, void* dev)
1310 {
1311 struct fore200e* fore200e = FORE200E_DEV((struct atm_dev*)dev);
1312
1313 if (fore200e->bus->irq_check(fore200e) == 0) {
1314
1315 DPRINTK(3, "interrupt NOT triggered by device %d\n", fore200e->atm_dev->number);
1316 return IRQ_NONE;
1317 }
1318 DPRINTK(3, "interrupt triggered by device %d\n", fore200e->atm_dev->number);
1319
1320 #ifdef FORE200E_USE_TASKLET
1321 tasklet_schedule(&fore200e->tx_tasklet);
1322 tasklet_schedule(&fore200e->rx_tasklet);
1323 #else
1324 fore200e_irq(fore200e);
1325 #endif
1326
1327 fore200e->bus->irq_ack(fore200e);
1328 return IRQ_HANDLED;
1329 }
1330
1331
1332 #ifdef FORE200E_USE_TASKLET
1333 static void
1334 fore200e_tx_tasklet(unsigned long data)
1335 {
1336 struct fore200e* fore200e = (struct fore200e*) data;
1337 unsigned long flags;
1338
1339 DPRINTK(3, "tx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1340
1341 spin_lock_irqsave(&fore200e->q_lock, flags);
1342 fore200e_tx_irq(fore200e);
1343 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1344 }
1345
1346
1347 static void
1348 fore200e_rx_tasklet(unsigned long data)
1349 {
1350 struct fore200e* fore200e = (struct fore200e*) data;
1351 unsigned long flags;
1352
1353 DPRINTK(3, "rx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1354
1355 spin_lock_irqsave(&fore200e->q_lock, flags);
1356 fore200e_rx_irq((struct fore200e*) data);
1357 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1358 }
1359 #endif
1360
1361
1362 static int
1363 fore200e_select_scheme(struct atm_vcc* vcc)
1364 {
1365 /* fairly balance the VCs over (identical) buffer schemes */
1366 int scheme = vcc->vci % 2 ? BUFFER_SCHEME_ONE : BUFFER_SCHEME_TWO;
1367
1368 DPRINTK(1, "VC %d.%d.%d uses buffer scheme %d\n",
1369 vcc->itf, vcc->vpi, vcc->vci, scheme);
1370
1371 return scheme;
1372 }
1373
1374
1375 static int
1376 fore200e_activate_vcin(struct fore200e* fore200e, int activate, struct atm_vcc* vcc, int mtu)
1377 {
1378 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1379 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1380 struct activate_opcode activ_opcode;
1381 struct deactivate_opcode deactiv_opcode;
1382 struct vpvc vpvc;
1383 int ok;
1384 enum fore200e_aal aal = fore200e_atm2fore_aal(vcc->qos.aal);
1385
1386 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1387
1388 if (activate) {
1389 FORE200E_VCC(vcc)->scheme = fore200e_select_scheme(vcc);
1390
1391 activ_opcode.opcode = OPCODE_ACTIVATE_VCIN;
1392 activ_opcode.aal = aal;
1393 activ_opcode.scheme = FORE200E_VCC(vcc)->scheme;
1394 activ_opcode.pad = 0;
1395 }
1396 else {
1397 deactiv_opcode.opcode = OPCODE_DEACTIVATE_VCIN;
1398 deactiv_opcode.pad = 0;
1399 }
1400
1401 vpvc.vci = vcc->vci;
1402 vpvc.vpi = vcc->vpi;
1403
1404 *entry->status = STATUS_PENDING;
1405
1406 if (activate) {
1407
1408 #ifdef FORE200E_52BYTE_AAL0_SDU
1409 mtu = 48;
1410 #endif
1411 /* the MTU is not used by the cp, except in the case of AAL0 */
1412 fore200e->bus->write(mtu, &entry->cp_entry->cmd.activate_block.mtu);
1413 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.vpvc);
1414 fore200e->bus->write(*(u32*)&activ_opcode, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.opcode);
1415 }
1416 else {
1417 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.vpvc);
1418 fore200e->bus->write(*(u32*)&deactiv_opcode, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.opcode);
1419 }
1420
1421 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1422
1423 *entry->status = STATUS_FREE;
1424
1425 if (ok == 0) {
1426 printk(FORE200E "unable to %s VC %d.%d.%d\n",
1427 activate ? "open" : "close", vcc->itf, vcc->vpi, vcc->vci);
1428 return -EIO;
1429 }
1430
1431 DPRINTK(1, "VC %d.%d.%d %sed\n", vcc->itf, vcc->vpi, vcc->vci,
1432 activate ? "open" : "clos");
1433
1434 return 0;
1435 }
1436
1437
1438 #define FORE200E_MAX_BACK2BACK_CELLS 255 /* XXX depends on CDVT */
1439
1440 static void
1441 fore200e_rate_ctrl(struct atm_qos* qos, struct tpd_rate* rate)
1442 {
1443 if (qos->txtp.max_pcr < ATM_OC3_PCR) {
1444
1445 /* compute the data cells to idle cells ratio from the tx PCR */
1446 rate->data_cells = qos->txtp.max_pcr * FORE200E_MAX_BACK2BACK_CELLS / ATM_OC3_PCR;
1447 rate->idle_cells = FORE200E_MAX_BACK2BACK_CELLS - rate->data_cells;
1448 }
1449 else {
1450 /* disable rate control */
1451 rate->data_cells = rate->idle_cells = 0;
1452 }
1453 }
1454
1455
1456 static int
1457 fore200e_open(struct atm_vcc *vcc)
1458 {
1459 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1460 struct fore200e_vcc* fore200e_vcc;
1461 struct fore200e_vc_map* vc_map;
1462 unsigned long flags;
1463 int vci = vcc->vci;
1464 short vpi = vcc->vpi;
1465
1466 ASSERT((vpi >= 0) && (vpi < 1<<FORE200E_VPI_BITS));
1467 ASSERT((vci >= 0) && (vci < 1<<FORE200E_VCI_BITS));
1468
1469 spin_lock_irqsave(&fore200e->q_lock, flags);
1470
1471 vc_map = FORE200E_VC_MAP(fore200e, vpi, vci);
1472 if (vc_map->vcc) {
1473
1474 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1475
1476 printk(FORE200E "VC %d.%d.%d already in use\n",
1477 fore200e->atm_dev->number, vpi, vci);
1478
1479 return -EINVAL;
1480 }
1481
1482 vc_map->vcc = vcc;
1483
1484 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1485
1486 fore200e_vcc = kzalloc(sizeof(struct fore200e_vcc), GFP_ATOMIC);
1487 if (fore200e_vcc == NULL) {
1488 vc_map->vcc = NULL;
1489 return -ENOMEM;
1490 }
1491
1492 DPRINTK(2, "opening %d.%d.%d:%d QoS = (tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
1493 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d)\n",
1494 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1495 fore200e_traffic_class[ vcc->qos.txtp.traffic_class ],
1496 vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_cdv, vcc->qos.txtp.max_sdu,
1497 fore200e_traffic_class[ vcc->qos.rxtp.traffic_class ],
1498 vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_cdv, vcc->qos.rxtp.max_sdu);
1499
1500 /* pseudo-CBR bandwidth requested? */
1501 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1502
1503 mutex_lock(&fore200e->rate_mtx);
1504 if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) {
1505 mutex_unlock(&fore200e->rate_mtx);
1506
1507 kfree(fore200e_vcc);
1508 vc_map->vcc = NULL;
1509 return -EAGAIN;
1510 }
1511
1512 /* reserve bandwidth */
1513 fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr;
1514 mutex_unlock(&fore200e->rate_mtx);
1515 }
1516
1517 vcc->itf = vcc->dev->number;
1518
1519 set_bit(ATM_VF_PARTIAL,&vcc->flags);
1520 set_bit(ATM_VF_ADDR, &vcc->flags);
1521
1522 vcc->dev_data = fore200e_vcc;
1523
1524 if (fore200e_activate_vcin(fore200e, 1, vcc, vcc->qos.rxtp.max_sdu) < 0) {
1525
1526 vc_map->vcc = NULL;
1527
1528 clear_bit(ATM_VF_ADDR, &vcc->flags);
1529 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1530
1531 vcc->dev_data = NULL;
1532
1533 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1534
1535 kfree(fore200e_vcc);
1536 return -EINVAL;
1537 }
1538
1539 /* compute rate control parameters */
1540 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1541
1542 fore200e_rate_ctrl(&vcc->qos, &fore200e_vcc->rate);
1543 set_bit(ATM_VF_HASQOS, &vcc->flags);
1544
1545 DPRINTK(3, "tx on %d.%d.%d:%d, tx PCR = %d, rx PCR = %d, data_cells = %u, idle_cells = %u\n",
1546 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1547 vcc->qos.txtp.max_pcr, vcc->qos.rxtp.max_pcr,
1548 fore200e_vcc->rate.data_cells, fore200e_vcc->rate.idle_cells);
1549 }
1550
1551 fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1;
1552 fore200e_vcc->tx_max_pdu = fore200e_vcc->rx_max_pdu = 0;
1553 fore200e_vcc->tx_pdu = fore200e_vcc->rx_pdu = 0;
1554
1555 /* new incarnation of the vcc */
1556 vc_map->incarn = ++fore200e->incarn_count;
1557
1558 /* VC unusable before this flag is set */
1559 set_bit(ATM_VF_READY, &vcc->flags);
1560
1561 return 0;
1562 }
1563
1564
1565 static void
1566 fore200e_close(struct atm_vcc* vcc)
1567 {
1568 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1569 struct fore200e_vcc* fore200e_vcc;
1570 struct fore200e_vc_map* vc_map;
1571 unsigned long flags;
1572
1573 ASSERT(vcc);
1574 ASSERT((vcc->vpi >= 0) && (vcc->vpi < 1<<FORE200E_VPI_BITS));
1575 ASSERT((vcc->vci >= 0) && (vcc->vci < 1<<FORE200E_VCI_BITS));
1576
1577 DPRINTK(2, "closing %d.%d.%d:%d\n", vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal));
1578
1579 clear_bit(ATM_VF_READY, &vcc->flags);
1580
1581 fore200e_activate_vcin(fore200e, 0, vcc, 0);
1582
1583 spin_lock_irqsave(&fore200e->q_lock, flags);
1584
1585 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1586
1587 /* the vc is no longer considered as "in use" by fore200e_open() */
1588 vc_map->vcc = NULL;
1589
1590 vcc->itf = vcc->vci = vcc->vpi = 0;
1591
1592 fore200e_vcc = FORE200E_VCC(vcc);
1593 vcc->dev_data = NULL;
1594
1595 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1596
1597 /* release reserved bandwidth, if any */
1598 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1599
1600 mutex_lock(&fore200e->rate_mtx);
1601 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1602 mutex_unlock(&fore200e->rate_mtx);
1603
1604 clear_bit(ATM_VF_HASQOS, &vcc->flags);
1605 }
1606
1607 clear_bit(ATM_VF_ADDR, &vcc->flags);
1608 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1609
1610 ASSERT(fore200e_vcc);
1611 kfree(fore200e_vcc);
1612 }
1613
1614
1615 static int
1616 fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
1617 {
1618 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1619 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
1620 struct fore200e_vc_map* vc_map;
1621 struct host_txq* txq = &fore200e->host_txq;
1622 struct host_txq_entry* entry;
1623 struct tpd* tpd;
1624 struct tpd_haddr tpd_haddr;
1625 int retry = CONFIG_ATM_FORE200E_TX_RETRY;
1626 int tx_copy = 0;
1627 int tx_len = skb->len;
1628 u32* cell_header = NULL;
1629 unsigned char* skb_data;
1630 int skb_len;
1631 unsigned char* data;
1632 unsigned long flags;
1633
1634 ASSERT(vcc);
1635 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1636 ASSERT(fore200e);
1637 ASSERT(fore200e_vcc);
1638
1639 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
1640 DPRINTK(1, "VC %d.%d.%d not ready for tx\n", vcc->itf, vcc->vpi, vcc->vpi);
1641 dev_kfree_skb_any(skb);
1642 return -EINVAL;
1643 }
1644
1645 #ifdef FORE200E_52BYTE_AAL0_SDU
1646 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.txtp.max_sdu == ATM_AAL0_SDU)) {
1647 cell_header = (u32*) skb->data;
1648 skb_data = skb->data + 4; /* skip 4-byte cell header */
1649 skb_len = tx_len = skb->len - 4;
1650
1651 DPRINTK(3, "user-supplied cell header = 0x%08x\n", *cell_header);
1652 }
1653 else
1654 #endif
1655 {
1656 skb_data = skb->data;
1657 skb_len = skb->len;
1658 }
1659
1660 if (((unsigned long)skb_data) & 0x3) {
1661
1662 DPRINTK(2, "misaligned tx PDU on device %s\n", fore200e->name);
1663 tx_copy = 1;
1664 tx_len = skb_len;
1665 }
1666
1667 if ((vcc->qos.aal == ATM_AAL0) && (skb_len % ATM_CELL_PAYLOAD)) {
1668
1669 /* this simply NUKES the PCA board */
1670 DPRINTK(2, "incomplete tx AAL0 PDU on device %s\n", fore200e->name);
1671 tx_copy = 1;
1672 tx_len = ((skb_len / ATM_CELL_PAYLOAD) + 1) * ATM_CELL_PAYLOAD;
1673 }
1674
1675 if (tx_copy) {
1676 data = kmalloc(tx_len, GFP_ATOMIC | GFP_DMA);
1677 if (data == NULL) {
1678 if (vcc->pop) {
1679 vcc->pop(vcc, skb);
1680 }
1681 else {
1682 dev_kfree_skb_any(skb);
1683 }
1684 return -ENOMEM;
1685 }
1686
1687 memcpy(data, skb_data, skb_len);
1688 if (skb_len < tx_len)
1689 memset(data + skb_len, 0x00, tx_len - skb_len);
1690 }
1691 else {
1692 data = skb_data;
1693 }
1694
1695 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1696 ASSERT(vc_map->vcc == vcc);
1697
1698 retry_here:
1699
1700 spin_lock_irqsave(&fore200e->q_lock, flags);
1701
1702 entry = &txq->host_entry[ txq->head ];
1703
1704 if ((*entry->status != STATUS_FREE) || (txq->txing >= QUEUE_SIZE_TX - 2)) {
1705
1706 /* try to free completed tx queue entries */
1707 fore200e_tx_irq(fore200e);
1708
1709 if (*entry->status != STATUS_FREE) {
1710
1711 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1712
1713 /* retry once again? */
1714 if (--retry > 0) {
1715 udelay(50);
1716 goto retry_here;
1717 }
1718
1719 atomic_inc(&vcc->stats->tx_err);
1720
1721 fore200e->tx_sat++;
1722 DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
1723 fore200e->name, fore200e->cp_queues->heartbeat);
1724 if (vcc->pop) {
1725 vcc->pop(vcc, skb);
1726 }
1727 else {
1728 dev_kfree_skb_any(skb);
1729 }
1730
1731 if (tx_copy)
1732 kfree(data);
1733
1734 return -ENOBUFS;
1735 }
1736 }
1737
1738 entry->incarn = vc_map->incarn;
1739 entry->vc_map = vc_map;
1740 entry->skb = skb;
1741 entry->data = tx_copy ? data : NULL;
1742
1743 tpd = entry->tpd;
1744 tpd->tsd[ 0 ].buffer = fore200e->bus->dma_map(fore200e, data, tx_len, DMA_TO_DEVICE);
1745 tpd->tsd[ 0 ].length = tx_len;
1746
1747 FORE200E_NEXT_ENTRY(txq->head, QUEUE_SIZE_TX);
1748 txq->txing++;
1749
1750 /* The dma_map call above implies a dma_sync so the device can use it,
1751 * thus no explicit dma_sync call is necessary here.
1752 */
1753
1754 DPRINTK(3, "tx on %d.%d.%d:%d, len = %u (%u)\n",
1755 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1756 tpd->tsd[0].length, skb_len);
1757
1758 if (skb_len < fore200e_vcc->tx_min_pdu)
1759 fore200e_vcc->tx_min_pdu = skb_len;
1760 if (skb_len > fore200e_vcc->tx_max_pdu)
1761 fore200e_vcc->tx_max_pdu = skb_len;
1762 fore200e_vcc->tx_pdu++;
1763
1764 /* set tx rate control information */
1765 tpd->rate.data_cells = fore200e_vcc->rate.data_cells;
1766 tpd->rate.idle_cells = fore200e_vcc->rate.idle_cells;
1767
1768 if (cell_header) {
1769 tpd->atm_header.clp = (*cell_header & ATM_HDR_CLP);
1770 tpd->atm_header.plt = (*cell_header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
1771 tpd->atm_header.vci = (*cell_header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT;
1772 tpd->atm_header.vpi = (*cell_header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT;
1773 tpd->atm_header.gfc = (*cell_header & ATM_HDR_GFC_MASK) >> ATM_HDR_GFC_SHIFT;
1774 }
1775 else {
1776 /* set the ATM header, common to all cells conveying the PDU */
1777 tpd->atm_header.clp = 0;
1778 tpd->atm_header.plt = 0;
1779 tpd->atm_header.vci = vcc->vci;
1780 tpd->atm_header.vpi = vcc->vpi;
1781 tpd->atm_header.gfc = 0;
1782 }
1783
1784 tpd->spec.length = tx_len;
1785 tpd->spec.nseg = 1;
1786 tpd->spec.aal = fore200e_atm2fore_aal(vcc->qos.aal);
1787 tpd->spec.intr = 1;
1788
1789 tpd_haddr.size = sizeof(struct tpd) / (1<<TPD_HADDR_SHIFT); /* size is expressed in 32 byte blocks */
1790 tpd_haddr.pad = 0;
1791 tpd_haddr.haddr = entry->tpd_dma >> TPD_HADDR_SHIFT; /* shift the address, as we are in a bitfield */
1792
1793 *entry->status = STATUS_PENDING;
1794 fore200e->bus->write(*(u32*)&tpd_haddr, (u32 __iomem *)&entry->cp_entry->tpd_haddr);
1795
1796 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1797
1798 return 0;
1799 }
1800
1801
1802 static int
1803 fore200e_getstats(struct fore200e* fore200e)
1804 {
1805 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1806 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1807 struct stats_opcode opcode;
1808 int ok;
1809 u32 stats_dma_addr;
1810
1811 if (fore200e->stats == NULL) {
1812 fore200e->stats = kzalloc(sizeof(struct stats), GFP_KERNEL | GFP_DMA);
1813 if (fore200e->stats == NULL)
1814 return -ENOMEM;
1815 }
1816
1817 stats_dma_addr = fore200e->bus->dma_map(fore200e, fore200e->stats,
1818 sizeof(struct stats), DMA_FROM_DEVICE);
1819
1820 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1821
1822 opcode.opcode = OPCODE_GET_STATS;
1823 opcode.pad = 0;
1824
1825 fore200e->bus->write(stats_dma_addr, &entry->cp_entry->cmd.stats_block.stats_haddr);
1826
1827 *entry->status = STATUS_PENDING;
1828
1829 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.stats_block.opcode);
1830
1831 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1832
1833 *entry->status = STATUS_FREE;
1834
1835 fore200e->bus->dma_unmap(fore200e, stats_dma_addr, sizeof(struct stats), DMA_FROM_DEVICE);
1836
1837 if (ok == 0) {
1838 printk(FORE200E "unable to get statistics from device %s\n", fore200e->name);
1839 return -EIO;
1840 }
1841
1842 return 0;
1843 }
1844
1845
1846 static int
1847 fore200e_getsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1848 {
1849 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1850
1851 DPRINTK(2, "getsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1852 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1853
1854 return -EINVAL;
1855 }
1856
1857
1858 static int
1859 fore200e_setsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1860 {
1861 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1862
1863 DPRINTK(2, "setsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1864 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1865
1866 return -EINVAL;
1867 }
1868
1869
1870 #if 0 /* currently unused */
1871 static int
1872 fore200e_get_oc3(struct fore200e* fore200e, struct oc3_regs* regs)
1873 {
1874 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1875 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1876 struct oc3_opcode opcode;
1877 int ok;
1878 u32 oc3_regs_dma_addr;
1879
1880 oc3_regs_dma_addr = fore200e->bus->dma_map(fore200e, regs, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1881
1882 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1883
1884 opcode.opcode = OPCODE_GET_OC3;
1885 opcode.reg = 0;
1886 opcode.value = 0;
1887 opcode.mask = 0;
1888
1889 fore200e->bus->write(oc3_regs_dma_addr, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1890
1891 *entry->status = STATUS_PENDING;
1892
1893 fore200e->bus->write(*(u32*)&opcode, (u32*)&entry->cp_entry->cmd.oc3_block.opcode);
1894
1895 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1896
1897 *entry->status = STATUS_FREE;
1898
1899 fore200e->bus->dma_unmap(fore200e, oc3_regs_dma_addr, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1900
1901 if (ok == 0) {
1902 printk(FORE200E "unable to get OC-3 regs of device %s\n", fore200e->name);
1903 return -EIO;
1904 }
1905
1906 return 0;
1907 }
1908 #endif
1909
1910
1911 static int
1912 fore200e_set_oc3(struct fore200e* fore200e, u32 reg, u32 value, u32 mask)
1913 {
1914 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1915 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1916 struct oc3_opcode opcode;
1917 int ok;
1918
1919 DPRINTK(2, "set OC-3 reg = 0x%02x, value = 0x%02x, mask = 0x%02x\n", reg, value, mask);
1920
1921 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1922
1923 opcode.opcode = OPCODE_SET_OC3;
1924 opcode.reg = reg;
1925 opcode.value = value;
1926 opcode.mask = mask;
1927
1928 fore200e->bus->write(0, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1929
1930 *entry->status = STATUS_PENDING;
1931
1932 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.oc3_block.opcode);
1933
1934 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1935
1936 *entry->status = STATUS_FREE;
1937
1938 if (ok == 0) {
1939 printk(FORE200E "unable to set OC-3 reg 0x%02x of device %s\n", reg, fore200e->name);
1940 return -EIO;
1941 }
1942
1943 return 0;
1944 }
1945
1946
1947 static int
1948 fore200e_setloop(struct fore200e* fore200e, int loop_mode)
1949 {
1950 u32 mct_value, mct_mask;
1951 int error;
1952
1953 if (!capable(CAP_NET_ADMIN))
1954 return -EPERM;
1955
1956 switch (loop_mode) {
1957
1958 case ATM_LM_NONE:
1959 mct_value = 0;
1960 mct_mask = SUNI_MCT_DLE | SUNI_MCT_LLE;
1961 break;
1962
1963 case ATM_LM_LOC_PHY:
1964 mct_value = mct_mask = SUNI_MCT_DLE;
1965 break;
1966
1967 case ATM_LM_RMT_PHY:
1968 mct_value = mct_mask = SUNI_MCT_LLE;
1969 break;
1970
1971 default:
1972 return -EINVAL;
1973 }
1974
1975 error = fore200e_set_oc3(fore200e, SUNI_MCT, mct_value, mct_mask);
1976 if (error == 0)
1977 fore200e->loop_mode = loop_mode;
1978
1979 return error;
1980 }
1981
1982
1983 static int
1984 fore200e_fetch_stats(struct fore200e* fore200e, struct sonet_stats __user *arg)
1985 {
1986 struct sonet_stats tmp;
1987
1988 if (fore200e_getstats(fore200e) < 0)
1989 return -EIO;
1990
1991 tmp.section_bip = cpu_to_be32(fore200e->stats->oc3.section_bip8_errors);
1992 tmp.line_bip = cpu_to_be32(fore200e->stats->oc3.line_bip24_errors);
1993 tmp.path_bip = cpu_to_be32(fore200e->stats->oc3.path_bip8_errors);
1994 tmp.line_febe = cpu_to_be32(fore200e->stats->oc3.line_febe_errors);
1995 tmp.path_febe = cpu_to_be32(fore200e->stats->oc3.path_febe_errors);
1996 tmp.corr_hcs = cpu_to_be32(fore200e->stats->oc3.corr_hcs_errors);
1997 tmp.uncorr_hcs = cpu_to_be32(fore200e->stats->oc3.ucorr_hcs_errors);
1998 tmp.tx_cells = cpu_to_be32(fore200e->stats->aal0.cells_transmitted) +
1999 cpu_to_be32(fore200e->stats->aal34.cells_transmitted) +
2000 cpu_to_be32(fore200e->stats->aal5.cells_transmitted);
2001 tmp.rx_cells = cpu_to_be32(fore200e->stats->aal0.cells_received) +
2002 cpu_to_be32(fore200e->stats->aal34.cells_received) +
2003 cpu_to_be32(fore200e->stats->aal5.cells_received);
2004
2005 if (arg)
2006 return copy_to_user(arg, &tmp, sizeof(struct sonet_stats)) ? -EFAULT : 0;
2007
2008 return 0;
2009 }
2010
2011
2012 static int
2013 fore200e_ioctl(struct atm_dev* dev, unsigned int cmd, void __user * arg)
2014 {
2015 struct fore200e* fore200e = FORE200E_DEV(dev);
2016
2017 DPRINTK(2, "ioctl cmd = 0x%x (%u), arg = 0x%p (%lu)\n", cmd, cmd, arg, (unsigned long)arg);
2018
2019 switch (cmd) {
2020
2021 case SONET_GETSTAT:
2022 return fore200e_fetch_stats(fore200e, (struct sonet_stats __user *)arg);
2023
2024 case SONET_GETDIAG:
2025 return put_user(0, (int __user *)arg) ? -EFAULT : 0;
2026
2027 case ATM_SETLOOP:
2028 return fore200e_setloop(fore200e, (int)(unsigned long)arg);
2029
2030 case ATM_GETLOOP:
2031 return put_user(fore200e->loop_mode, (int __user *)arg) ? -EFAULT : 0;
2032
2033 case ATM_QUERYLOOP:
2034 return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY, (int __user *)arg) ? -EFAULT : 0;
2035 }
2036
2037 return -ENOSYS; /* not implemented */
2038 }
2039
2040
2041 static int
2042 fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags)
2043 {
2044 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
2045 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
2046
2047 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
2048 DPRINTK(1, "VC %d.%d.%d not ready for QoS change\n", vcc->itf, vcc->vpi, vcc->vpi);
2049 return -EINVAL;
2050 }
2051
2052 DPRINTK(2, "change_qos %d.%d.%d, "
2053 "(tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
2054 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d), flags = 0x%x\n"
2055 "available_cell_rate = %u",
2056 vcc->itf, vcc->vpi, vcc->vci,
2057 fore200e_traffic_class[ qos->txtp.traffic_class ],
2058 qos->txtp.min_pcr, qos->txtp.max_pcr, qos->txtp.max_cdv, qos->txtp.max_sdu,
2059 fore200e_traffic_class[ qos->rxtp.traffic_class ],
2060 qos->rxtp.min_pcr, qos->rxtp.max_pcr, qos->rxtp.max_cdv, qos->rxtp.max_sdu,
2061 flags, fore200e->available_cell_rate);
2062
2063 if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) {
2064
2065 mutex_lock(&fore200e->rate_mtx);
2066 if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) {
2067 mutex_unlock(&fore200e->rate_mtx);
2068 return -EAGAIN;
2069 }
2070
2071 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
2072 fore200e->available_cell_rate -= qos->txtp.max_pcr;
2073
2074 mutex_unlock(&fore200e->rate_mtx);
2075
2076 memcpy(&vcc->qos, qos, sizeof(struct atm_qos));
2077
2078 /* update rate control parameters */
2079 fore200e_rate_ctrl(qos, &fore200e_vcc->rate);
2080
2081 set_bit(ATM_VF_HASQOS, &vcc->flags);
2082
2083 return 0;
2084 }
2085
2086 return -EINVAL;
2087 }
2088
2089
2090 static int __devinit
2091 fore200e_irq_request(struct fore200e* fore200e)
2092 {
2093 if (request_irq(fore200e->irq, fore200e_interrupt, IRQF_SHARED, fore200e->name, fore200e->atm_dev) < 0) {
2094
2095 printk(FORE200E "unable to reserve IRQ %s for device %s\n",
2096 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2097 return -EBUSY;
2098 }
2099
2100 printk(FORE200E "IRQ %s reserved for device %s\n",
2101 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2102
2103 #ifdef FORE200E_USE_TASKLET
2104 tasklet_init(&fore200e->tx_tasklet, fore200e_tx_tasklet, (unsigned long)fore200e);
2105 tasklet_init(&fore200e->rx_tasklet, fore200e_rx_tasklet, (unsigned long)fore200e);
2106 #endif
2107
2108 fore200e->state = FORE200E_STATE_IRQ;
2109 return 0;
2110 }
2111
2112
2113 static int __devinit
2114 fore200e_get_esi(struct fore200e* fore200e)
2115 {
2116 struct prom_data* prom = kzalloc(sizeof(struct prom_data), GFP_KERNEL | GFP_DMA);
2117 int ok, i;
2118
2119 if (!prom)
2120 return -ENOMEM;
2121
2122 ok = fore200e->bus->prom_read(fore200e, prom);
2123 if (ok < 0) {
2124 kfree(prom);
2125 return -EBUSY;
2126 }
2127
2128 printk(FORE200E "device %s, rev. %c, S/N: %d, ESI: %02x:%02x:%02x:%02x:%02x:%02x\n",
2129 fore200e->name,
2130 (prom->hw_revision & 0xFF) + '@', /* probably meaningless with SBA boards */
2131 prom->serial_number & 0xFFFF,
2132 prom->mac_addr[ 2 ], prom->mac_addr[ 3 ], prom->mac_addr[ 4 ],
2133 prom->mac_addr[ 5 ], prom->mac_addr[ 6 ], prom->mac_addr[ 7 ]);
2134
2135 for (i = 0; i < ESI_LEN; i++) {
2136 fore200e->esi[ i ] = fore200e->atm_dev->esi[ i ] = prom->mac_addr[ i + 2 ];
2137 }
2138
2139 kfree(prom);
2140
2141 return 0;
2142 }
2143
2144
2145 static int __devinit
2146 fore200e_alloc_rx_buf(struct fore200e* fore200e)
2147 {
2148 int scheme, magn, nbr, size, i;
2149
2150 struct host_bsq* bsq;
2151 struct buffer* buffer;
2152
2153 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2154 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2155
2156 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2157
2158 nbr = fore200e_rx_buf_nbr[ scheme ][ magn ];
2159 size = fore200e_rx_buf_size[ scheme ][ magn ];
2160
2161 DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn);
2162
2163 /* allocate the array of receive buffers */
2164 buffer = bsq->buffer = kzalloc(nbr * sizeof(struct buffer), GFP_KERNEL);
2165
2166 if (buffer == NULL)
2167 return -ENOMEM;
2168
2169 bsq->freebuf = NULL;
2170
2171 for (i = 0; i < nbr; i++) {
2172
2173 buffer[ i ].scheme = scheme;
2174 buffer[ i ].magn = magn;
2175 #ifdef FORE200E_BSQ_DEBUG
2176 buffer[ i ].index = i;
2177 buffer[ i ].supplied = 0;
2178 #endif
2179
2180 /* allocate the receive buffer body */
2181 if (fore200e_chunk_alloc(fore200e,
2182 &buffer[ i ].data, size, fore200e->bus->buffer_alignment,
2183 DMA_FROM_DEVICE) < 0) {
2184
2185 while (i > 0)
2186 fore200e_chunk_free(fore200e, &buffer[ --i ].data);
2187 kfree(buffer);
2188
2189 return -ENOMEM;
2190 }
2191
2192 /* insert the buffer into the free buffer list */
2193 buffer[ i ].next = bsq->freebuf;
2194 bsq->freebuf = &buffer[ i ];
2195 }
2196 /* all the buffers are free, initially */
2197 bsq->freebuf_count = nbr;
2198
2199 #ifdef FORE200E_BSQ_DEBUG
2200 bsq_audit(3, bsq, scheme, magn);
2201 #endif
2202 }
2203 }
2204
2205 fore200e->state = FORE200E_STATE_ALLOC_BUF;
2206 return 0;
2207 }
2208
2209
2210 static int __devinit
2211 fore200e_init_bs_queue(struct fore200e* fore200e)
2212 {
2213 int scheme, magn, i;
2214
2215 struct host_bsq* bsq;
2216 struct cp_bsq_entry __iomem * cp_entry;
2217
2218 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2219 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2220
2221 DPRINTK(2, "buffer supply queue %d / %d is being initialized\n", scheme, magn);
2222
2223 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2224
2225 /* allocate and align the array of status words */
2226 if (fore200e->bus->dma_chunk_alloc(fore200e,
2227 &bsq->status,
2228 sizeof(enum status),
2229 QUEUE_SIZE_BS,
2230 fore200e->bus->status_alignment) < 0) {
2231 return -ENOMEM;
2232 }
2233
2234 /* allocate and align the array of receive buffer descriptors */
2235 if (fore200e->bus->dma_chunk_alloc(fore200e,
2236 &bsq->rbd_block,
2237 sizeof(struct rbd_block),
2238 QUEUE_SIZE_BS,
2239 fore200e->bus->descr_alignment) < 0) {
2240
2241 fore200e->bus->dma_chunk_free(fore200e, &bsq->status);
2242 return -ENOMEM;
2243 }
2244
2245 /* get the base address of the cp resident buffer supply queue entries */
2246 cp_entry = fore200e->virt_base +
2247 fore200e->bus->read(&fore200e->cp_queues->cp_bsq[ scheme ][ magn ]);
2248
2249 /* fill the host resident and cp resident buffer supply queue entries */
2250 for (i = 0; i < QUEUE_SIZE_BS; i++) {
2251
2252 bsq->host_entry[ i ].status =
2253 FORE200E_INDEX(bsq->status.align_addr, enum status, i);
2254 bsq->host_entry[ i ].rbd_block =
2255 FORE200E_INDEX(bsq->rbd_block.align_addr, struct rbd_block, i);
2256 bsq->host_entry[ i ].rbd_block_dma =
2257 FORE200E_DMA_INDEX(bsq->rbd_block.dma_addr, struct rbd_block, i);
2258 bsq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2259
2260 *bsq->host_entry[ i ].status = STATUS_FREE;
2261
2262 fore200e->bus->write(FORE200E_DMA_INDEX(bsq->status.dma_addr, enum status, i),
2263 &cp_entry[ i ].status_haddr);
2264 }
2265 }
2266 }
2267
2268 fore200e->state = FORE200E_STATE_INIT_BSQ;
2269 return 0;
2270 }
2271
2272
2273 static int __devinit
2274 fore200e_init_rx_queue(struct fore200e* fore200e)
2275 {
2276 struct host_rxq* rxq = &fore200e->host_rxq;
2277 struct cp_rxq_entry __iomem * cp_entry;
2278 int i;
2279
2280 DPRINTK(2, "receive queue is being initialized\n");
2281
2282 /* allocate and align the array of status words */
2283 if (fore200e->bus->dma_chunk_alloc(fore200e,
2284 &rxq->status,
2285 sizeof(enum status),
2286 QUEUE_SIZE_RX,
2287 fore200e->bus->status_alignment) < 0) {
2288 return -ENOMEM;
2289 }
2290
2291 /* allocate and align the array of receive PDU descriptors */
2292 if (fore200e->bus->dma_chunk_alloc(fore200e,
2293 &rxq->rpd,
2294 sizeof(struct rpd),
2295 QUEUE_SIZE_RX,
2296 fore200e->bus->descr_alignment) < 0) {
2297
2298 fore200e->bus->dma_chunk_free(fore200e, &rxq->status);
2299 return -ENOMEM;
2300 }
2301
2302 /* get the base address of the cp resident rx queue entries */
2303 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_rxq);
2304
2305 /* fill the host resident and cp resident rx entries */
2306 for (i=0; i < QUEUE_SIZE_RX; i++) {
2307
2308 rxq->host_entry[ i ].status =
2309 FORE200E_INDEX(rxq->status.align_addr, enum status, i);
2310 rxq->host_entry[ i ].rpd =
2311 FORE200E_INDEX(rxq->rpd.align_addr, struct rpd, i);
2312 rxq->host_entry[ i ].rpd_dma =
2313 FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i);
2314 rxq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2315
2316 *rxq->host_entry[ i ].status = STATUS_FREE;
2317
2318 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->status.dma_addr, enum status, i),
2319 &cp_entry[ i ].status_haddr);
2320
2321 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i),
2322 &cp_entry[ i ].rpd_haddr);
2323 }
2324
2325 /* set the head entry of the queue */
2326 rxq->head = 0;
2327
2328 fore200e->state = FORE200E_STATE_INIT_RXQ;
2329 return 0;
2330 }
2331
2332
2333 static int __devinit
2334 fore200e_init_tx_queue(struct fore200e* fore200e)
2335 {
2336 struct host_txq* txq = &fore200e->host_txq;
2337 struct cp_txq_entry __iomem * cp_entry;
2338 int i;
2339
2340 DPRINTK(2, "transmit queue is being initialized\n");
2341
2342 /* allocate and align the array of status words */
2343 if (fore200e->bus->dma_chunk_alloc(fore200e,
2344 &txq->status,
2345 sizeof(enum status),
2346 QUEUE_SIZE_TX,
2347 fore200e->bus->status_alignment) < 0) {
2348 return -ENOMEM;
2349 }
2350
2351 /* allocate and align the array of transmit PDU descriptors */
2352 if (fore200e->bus->dma_chunk_alloc(fore200e,
2353 &txq->tpd,
2354 sizeof(struct tpd),
2355 QUEUE_SIZE_TX,
2356 fore200e->bus->descr_alignment) < 0) {
2357
2358 fore200e->bus->dma_chunk_free(fore200e, &txq->status);
2359 return -ENOMEM;
2360 }
2361
2362 /* get the base address of the cp resident tx queue entries */
2363 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_txq);
2364
2365 /* fill the host resident and cp resident tx entries */
2366 for (i=0; i < QUEUE_SIZE_TX; i++) {
2367
2368 txq->host_entry[ i ].status =
2369 FORE200E_INDEX(txq->status.align_addr, enum status, i);
2370 txq->host_entry[ i ].tpd =
2371 FORE200E_INDEX(txq->tpd.align_addr, struct tpd, i);
2372 txq->host_entry[ i ].tpd_dma =
2373 FORE200E_DMA_INDEX(txq->tpd.dma_addr, struct tpd, i);
2374 txq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2375
2376 *txq->host_entry[ i ].status = STATUS_FREE;
2377
2378 fore200e->bus->write(FORE200E_DMA_INDEX(txq->status.dma_addr, enum status, i),
2379 &cp_entry[ i ].status_haddr);
2380
2381 /* although there is a one-to-one mapping of tx queue entries and tpds,
2382 we do not write here the DMA (physical) base address of each tpd into
2383 the related cp resident entry, because the cp relies on this write
2384 operation to detect that a new pdu has been submitted for tx */
2385 }
2386
2387 /* set the head and tail entries of the queue */
2388 txq->head = 0;
2389 txq->tail = 0;
2390
2391 fore200e->state = FORE200E_STATE_INIT_TXQ;
2392 return 0;
2393 }
2394
2395
2396 static int __devinit
2397 fore200e_init_cmd_queue(struct fore200e* fore200e)
2398 {
2399 struct host_cmdq* cmdq = &fore200e->host_cmdq;
2400 struct cp_cmdq_entry __iomem * cp_entry;
2401 int i;
2402
2403 DPRINTK(2, "command queue is being initialized\n");
2404
2405 /* allocate and align the array of status words */
2406 if (fore200e->bus->dma_chunk_alloc(fore200e,
2407 &cmdq->status,
2408 sizeof(enum status),
2409 QUEUE_SIZE_CMD,
2410 fore200e->bus->status_alignment) < 0) {
2411 return -ENOMEM;
2412 }
2413
2414 /* get the base address of the cp resident cmd queue entries */
2415 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_cmdq);
2416
2417 /* fill the host resident and cp resident cmd entries */
2418 for (i=0; i < QUEUE_SIZE_CMD; i++) {
2419
2420 cmdq->host_entry[ i ].status =
2421 FORE200E_INDEX(cmdq->status.align_addr, enum status, i);
2422 cmdq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2423
2424 *cmdq->host_entry[ i ].status = STATUS_FREE;
2425
2426 fore200e->bus->write(FORE200E_DMA_INDEX(cmdq->status.dma_addr, enum status, i),
2427 &cp_entry[ i ].status_haddr);
2428 }
2429
2430 /* set the head entry of the queue */
2431 cmdq->head = 0;
2432
2433 fore200e->state = FORE200E_STATE_INIT_CMDQ;
2434 return 0;
2435 }
2436
2437
2438 static void __init
2439 fore200e_param_bs_queue(struct fore200e* fore200e,
2440 enum buffer_scheme scheme, enum buffer_magn magn,
2441 int queue_length, int pool_size, int supply_blksize)
2442 {
2443 struct bs_spec __iomem * bs_spec = &fore200e->cp_queues->init.bs_spec[ scheme ][ magn ];
2444
2445 fore200e->bus->write(queue_length, &bs_spec->queue_length);
2446 fore200e->bus->write(fore200e_rx_buf_size[ scheme ][ magn ], &bs_spec->buffer_size);
2447 fore200e->bus->write(pool_size, &bs_spec->pool_size);
2448 fore200e->bus->write(supply_blksize, &bs_spec->supply_blksize);
2449 }
2450
2451
2452 static int __devinit
2453 fore200e_initialize(struct fore200e* fore200e)
2454 {
2455 struct cp_queues __iomem * cpq;
2456 int ok, scheme, magn;
2457
2458 DPRINTK(2, "device %s being initialized\n", fore200e->name);
2459
2460 mutex_init(&fore200e->rate_mtx);
2461 spin_lock_init(&fore200e->q_lock);
2462
2463 cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET;
2464
2465 /* enable cp to host interrupts */
2466 fore200e->bus->write(1, &cpq->imask);
2467
2468 if (fore200e->bus->irq_enable)
2469 fore200e->bus->irq_enable(fore200e);
2470
2471 fore200e->bus->write(NBR_CONNECT, &cpq->init.num_connect);
2472
2473 fore200e->bus->write(QUEUE_SIZE_CMD, &cpq->init.cmd_queue_len);
2474 fore200e->bus->write(QUEUE_SIZE_RX, &cpq->init.rx_queue_len);
2475 fore200e->bus->write(QUEUE_SIZE_TX, &cpq->init.tx_queue_len);
2476
2477 fore200e->bus->write(RSD_EXTENSION, &cpq->init.rsd_extension);
2478 fore200e->bus->write(TSD_EXTENSION, &cpq->init.tsd_extension);
2479
2480 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++)
2481 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++)
2482 fore200e_param_bs_queue(fore200e, scheme, magn,
2483 QUEUE_SIZE_BS,
2484 fore200e_rx_buf_nbr[ scheme ][ magn ],
2485 RBD_BLK_SIZE);
2486
2487 /* issue the initialize command */
2488 fore200e->bus->write(STATUS_PENDING, &cpq->init.status);
2489 fore200e->bus->write(OPCODE_INITIALIZE, &cpq->init.opcode);
2490
2491 ok = fore200e_io_poll(fore200e, &cpq->init.status, STATUS_COMPLETE, 3000);
2492 if (ok == 0) {
2493 printk(FORE200E "device %s initialization failed\n", fore200e->name);
2494 return -ENODEV;
2495 }
2496
2497 printk(FORE200E "device %s initialized\n", fore200e->name);
2498
2499 fore200e->state = FORE200E_STATE_INITIALIZE;
2500 return 0;
2501 }
2502
2503
2504 static void __devinit
2505 fore200e_monitor_putc(struct fore200e* fore200e, char c)
2506 {
2507 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2508
2509 #if 0
2510 printk("%c", c);
2511 #endif
2512 fore200e->bus->write(((u32) c) | FORE200E_CP_MONITOR_UART_AVAIL, &monitor->soft_uart.send);
2513 }
2514
2515
2516 static int __devinit
2517 fore200e_monitor_getc(struct fore200e* fore200e)
2518 {
2519 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2520 unsigned long timeout = jiffies + msecs_to_jiffies(50);
2521 int c;
2522
2523 while (time_before(jiffies, timeout)) {
2524
2525 c = (int) fore200e->bus->read(&monitor->soft_uart.recv);
2526
2527 if (c & FORE200E_CP_MONITOR_UART_AVAIL) {
2528
2529 fore200e->bus->write(FORE200E_CP_MONITOR_UART_FREE, &monitor->soft_uart.recv);
2530 #if 0
2531 printk("%c", c & 0xFF);
2532 #endif
2533 return c & 0xFF;
2534 }
2535 }
2536
2537 return -1;
2538 }
2539
2540
2541 static void __devinit
2542 fore200e_monitor_puts(struct fore200e* fore200e, char* str)
2543 {
2544 while (*str) {
2545
2546 /* the i960 monitor doesn't accept any new character if it has something to say */
2547 while (fore200e_monitor_getc(fore200e) >= 0);
2548
2549 fore200e_monitor_putc(fore200e, *str++);
2550 }
2551
2552 while (fore200e_monitor_getc(fore200e) >= 0);
2553 }
2554
2555
2556 static int __devinit
2557 fore200e_start_fw(struct fore200e* fore200e)
2558 {
2559 int ok;
2560 char cmd[ 48 ];
2561 struct fw_header* fw_header = (struct fw_header*) fore200e->bus->fw_data;
2562
2563 DPRINTK(2, "device %s firmware being started\n", fore200e->name);
2564
2565 #if defined(__sparc_v9__)
2566 /* reported to be required by SBA cards on some sparc64 hosts */
2567 fore200e_spin(100);
2568 #endif
2569
2570 sprintf(cmd, "\rgo %x\r", le32_to_cpu(fw_header->start_offset));
2571
2572 fore200e_monitor_puts(fore200e, cmd);
2573
2574 ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_CP_RUNNING, 1000);
2575 if (ok == 0) {
2576 printk(FORE200E "device %s firmware didn't start\n", fore200e->name);
2577 return -ENODEV;
2578 }
2579
2580 printk(FORE200E "device %s firmware started\n", fore200e->name);
2581
2582 fore200e->state = FORE200E_STATE_START_FW;
2583 return 0;
2584 }
2585
2586
2587 static int __devinit
2588 fore200e_load_fw(struct fore200e* fore200e)
2589 {
2590 u32* fw_data = (u32*) fore200e->bus->fw_data;
2591 u32 fw_size = (u32) *fore200e->bus->fw_size / sizeof(u32);
2592
2593 struct fw_header* fw_header = (struct fw_header*) fw_data;
2594
2595 u32 __iomem *load_addr = fore200e->virt_base + le32_to_cpu(fw_header->load_offset);
2596
2597 DPRINTK(2, "device %s firmware being loaded at 0x%p (%d words)\n",
2598 fore200e->name, load_addr, fw_size);
2599
2600 if (le32_to_cpu(fw_header->magic) != FW_HEADER_MAGIC) {
2601 printk(FORE200E "corrupted %s firmware image\n", fore200e->bus->model_name);
2602 return -ENODEV;
2603 }
2604
2605 for (; fw_size--; fw_data++, load_addr++)
2606 fore200e->bus->write(le32_to_cpu(*fw_data), load_addr);
2607
2608 fore200e->state = FORE200E_STATE_LOAD_FW;
2609 return 0;
2610 }
2611
2612
2613 static int __devinit
2614 fore200e_register(struct fore200e* fore200e)
2615 {
2616 struct atm_dev* atm_dev;
2617
2618 DPRINTK(2, "device %s being registered\n", fore200e->name);
2619
2620 atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1,
2621 NULL);
2622 if (atm_dev == NULL) {
2623 printk(FORE200E "unable to register device %s\n", fore200e->name);
2624 return -ENODEV;
2625 }
2626
2627 atm_dev->dev_data = fore200e;
2628 fore200e->atm_dev = atm_dev;
2629
2630 atm_dev->ci_range.vpi_bits = FORE200E_VPI_BITS;
2631 atm_dev->ci_range.vci_bits = FORE200E_VCI_BITS;
2632
2633 fore200e->available_cell_rate = ATM_OC3_PCR;
2634
2635 fore200e->state = FORE200E_STATE_REGISTER;
2636 return 0;
2637 }
2638
2639
2640 static int __devinit
2641 fore200e_init(struct fore200e* fore200e)
2642 {
2643 if (fore200e_register(fore200e) < 0)
2644 return -ENODEV;
2645
2646 if (fore200e->bus->configure(fore200e) < 0)
2647 return -ENODEV;
2648
2649 if (fore200e->bus->map(fore200e) < 0)
2650 return -ENODEV;
2651
2652 if (fore200e_reset(fore200e, 1) < 0)
2653 return -ENODEV;
2654
2655 if (fore200e_load_fw(fore200e) < 0)
2656 return -ENODEV;
2657
2658 if (fore200e_start_fw(fore200e) < 0)
2659 return -ENODEV;
2660
2661 if (fore200e_initialize(fore200e) < 0)
2662 return -ENODEV;
2663
2664 if (fore200e_init_cmd_queue(fore200e) < 0)
2665 return -ENOMEM;
2666
2667 if (fore200e_init_tx_queue(fore200e) < 0)
2668 return -ENOMEM;
2669
2670 if (fore200e_init_rx_queue(fore200e) < 0)
2671 return -ENOMEM;
2672
2673 if (fore200e_init_bs_queue(fore200e) < 0)
2674 return -ENOMEM;
2675
2676 if (fore200e_alloc_rx_buf(fore200e) < 0)
2677 return -ENOMEM;
2678
2679 if (fore200e_get_esi(fore200e) < 0)
2680 return -EIO;
2681
2682 if (fore200e_irq_request(fore200e) < 0)
2683 return -EBUSY;
2684
2685 fore200e_supply(fore200e);
2686
2687 /* all done, board initialization is now complete */
2688 fore200e->state = FORE200E_STATE_COMPLETE;
2689 return 0;
2690 }
2691
2692
2693 static int __devinit
2694 fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
2695 {
2696 const struct fore200e_bus* bus = (struct fore200e_bus*) pci_ent->driver_data;
2697 struct fore200e* fore200e;
2698 int err = 0;
2699 static int index = 0;
2700
2701 if (pci_enable_device(pci_dev)) {
2702 err = -EINVAL;
2703 goto out;
2704 }
2705
2706 fore200e = kzalloc(sizeof(struct fore200e), GFP_KERNEL);
2707 if (fore200e == NULL) {
2708 err = -ENOMEM;
2709 goto out_disable;
2710 }
2711
2712 fore200e->bus = bus;
2713 fore200e->bus_dev = pci_dev;
2714 fore200e->irq = pci_dev->irq;
2715 fore200e->phys_base = pci_resource_start(pci_dev, 0);
2716
2717 sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
2718
2719 pci_set_master(pci_dev);
2720
2721 printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2722 fore200e->bus->model_name,
2723 fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2724
2725 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2726
2727 err = fore200e_init(fore200e);
2728 if (err < 0) {
2729 fore200e_shutdown(fore200e);
2730 goto out_free;
2731 }
2732
2733 ++index;
2734 pci_set_drvdata(pci_dev, fore200e);
2735
2736 out:
2737 return err;
2738
2739 out_free:
2740 kfree(fore200e);
2741 out_disable:
2742 pci_disable_device(pci_dev);
2743 goto out;
2744 }
2745
2746
2747 static void __devexit fore200e_pca_remove_one(struct pci_dev *pci_dev)
2748 {
2749 struct fore200e *fore200e;
2750
2751 fore200e = pci_get_drvdata(pci_dev);
2752
2753 fore200e_shutdown(fore200e);
2754 kfree(fore200e);
2755 pci_disable_device(pci_dev);
2756 }
2757
2758
2759 #ifdef CONFIG_ATM_FORE200E_PCA
2760 static struct pci_device_id fore200e_pca_tbl[] = {
2761 { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_PCA200E, PCI_ANY_ID, PCI_ANY_ID,
2762 0, 0, (unsigned long) &fore200e_bus[0] },
2763 { 0, }
2764 };
2765
2766 MODULE_DEVICE_TABLE(pci, fore200e_pca_tbl);
2767
2768 static struct pci_driver fore200e_pca_driver = {
2769 .name = "fore_200e",
2770 .probe = fore200e_pca_detect,
2771 .remove = __devexit_p(fore200e_pca_remove_one),
2772 .id_table = fore200e_pca_tbl,
2773 };
2774 #endif
2775
2776
2777 static int __init
2778 fore200e_module_init(void)
2779 {
2780 const struct fore200e_bus* bus;
2781 struct fore200e* fore200e;
2782 int index;
2783
2784 printk(FORE200E "FORE Systems 200E-series ATM driver - version " FORE200E_VERSION "\n");
2785
2786 /* for each configured bus interface */
2787 for (bus = fore200e_bus; bus->model_name; bus++) {
2788
2789 /* detect all boards present on that bus */
2790 for (index = 0; bus->detect && (fore200e = bus->detect(bus, index)); index++) {
2791
2792 printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2793 fore200e->bus->model_name,
2794 fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2795
2796 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2797
2798 if (fore200e_init(fore200e) < 0) {
2799
2800 fore200e_shutdown(fore200e);
2801 break;
2802 }
2803
2804 list_add(&fore200e->entry, &fore200e_boards);
2805 }
2806 }
2807
2808 #ifdef CONFIG_ATM_FORE200E_PCA
2809 if (!pci_register_driver(&fore200e_pca_driver))
2810 return 0;
2811 #endif
2812
2813 if (!list_empty(&fore200e_boards))
2814 return 0;
2815
2816 return -ENODEV;
2817 }
2818
2819
2820 static void __exit
2821 fore200e_module_cleanup(void)
2822 {
2823 struct fore200e *fore200e, *next;
2824
2825 #ifdef CONFIG_ATM_FORE200E_PCA
2826 pci_unregister_driver(&fore200e_pca_driver);
2827 #endif
2828
2829 list_for_each_entry_safe(fore200e, next, &fore200e_boards, entry) {
2830 fore200e_shutdown(fore200e);
2831 kfree(fore200e);
2832 }
2833 DPRINTK(1, "module being removed\n");
2834 }
2835
2836
2837 static int
2838 fore200e_proc_read(struct atm_dev *dev, loff_t* pos, char* page)
2839 {
2840 struct fore200e* fore200e = FORE200E_DEV(dev);
2841 struct fore200e_vcc* fore200e_vcc;
2842 struct atm_vcc* vcc;
2843 int i, len, left = *pos;
2844 unsigned long flags;
2845
2846 if (!left--) {
2847
2848 if (fore200e_getstats(fore200e) < 0)
2849 return -EIO;
2850
2851 len = sprintf(page,"\n"
2852 " device:\n"
2853 " internal name:\t\t%s\n", fore200e->name);
2854
2855 /* print bus-specific information */
2856 if (fore200e->bus->proc_read)
2857 len += fore200e->bus->proc_read(fore200e, page + len);
2858
2859 len += sprintf(page + len,
2860 " interrupt line:\t\t%s\n"
2861 " physical base address:\t0x%p\n"
2862 " virtual base address:\t0x%p\n"
2863 " factory address (ESI):\t%02x:%02x:%02x:%02x:%02x:%02x\n"
2864 " board serial number:\t\t%d\n\n",
2865 fore200e_irq_itoa(fore200e->irq),
2866 (void*)fore200e->phys_base,
2867 fore200e->virt_base,
2868 fore200e->esi[0], fore200e->esi[1], fore200e->esi[2],
2869 fore200e->esi[3], fore200e->esi[4], fore200e->esi[5],
2870 fore200e->esi[4] * 256 + fore200e->esi[5]);
2871
2872 return len;
2873 }
2874
2875 if (!left--)
2876 return sprintf(page,
2877 " free small bufs, scheme 1:\t%d\n"
2878 " free large bufs, scheme 1:\t%d\n"
2879 " free small bufs, scheme 2:\t%d\n"
2880 " free large bufs, scheme 2:\t%d\n",
2881 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_SMALL ].freebuf_count,
2882 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_LARGE ].freebuf_count,
2883 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_SMALL ].freebuf_count,
2884 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_LARGE ].freebuf_count);
2885
2886 if (!left--) {
2887 u32 hb = fore200e->bus->read(&fore200e->cp_queues->heartbeat);
2888
2889 len = sprintf(page,"\n\n"
2890 " cell processor:\n"
2891 " heartbeat state:\t\t");
2892
2893 if (hb >> 16 != 0xDEAD)
2894 len += sprintf(page + len, "0x%08x\n", hb);
2895 else
2896 len += sprintf(page + len, "*** FATAL ERROR %04x ***\n", hb & 0xFFFF);
2897
2898 return len;
2899 }
2900
2901 if (!left--) {
2902 static const char* media_name[] = {
2903 "unshielded twisted pair",
2904 "multimode optical fiber ST",
2905 "multimode optical fiber SC",
2906 "single-mode optical fiber ST",
2907 "single-mode optical fiber SC",
2908 "unknown"
2909 };
2910
2911 static const char* oc3_mode[] = {
2912 "normal operation",
2913 "diagnostic loopback",
2914 "line loopback",
2915 "unknown"
2916 };
2917
2918 u32 fw_release = fore200e->bus->read(&fore200e->cp_queues->fw_release);
2919 u32 mon960_release = fore200e->bus->read(&fore200e->cp_queues->mon960_release);
2920 u32 oc3_revision = fore200e->bus->read(&fore200e->cp_queues->oc3_revision);
2921 u32 media_index = FORE200E_MEDIA_INDEX(fore200e->bus->read(&fore200e->cp_queues->media_type));
2922 u32 oc3_index;
2923
2924 if ((media_index < 0) || (media_index > 4))
2925 media_index = 5;
2926
2927 switch (fore200e->loop_mode) {
2928 case ATM_LM_NONE: oc3_index = 0;
2929 break;
2930 case ATM_LM_LOC_PHY: oc3_index = 1;
2931 break;
2932 case ATM_LM_RMT_PHY: oc3_index = 2;
2933 break;
2934 default: oc3_index = 3;
2935 }
2936
2937 return sprintf(page,
2938 " firmware release:\t\t%d.%d.%d\n"
2939 " monitor release:\t\t%d.%d\n"
2940 " media type:\t\t\t%s\n"
2941 " OC-3 revision:\t\t0x%x\n"
2942 " OC-3 mode:\t\t\t%s",
2943 fw_release >> 16, fw_release << 16 >> 24, fw_release << 24 >> 24,
2944 mon960_release >> 16, mon960_release << 16 >> 16,
2945 media_name[ media_index ],
2946 oc3_revision,
2947 oc3_mode[ oc3_index ]);
2948 }
2949
2950 if (!left--) {
2951 struct cp_monitor __iomem * cp_monitor = fore200e->cp_monitor;
2952
2953 return sprintf(page,
2954 "\n\n"
2955 " monitor:\n"
2956 " version number:\t\t%d\n"
2957 " boot status word:\t\t0x%08x\n",
2958 fore200e->bus->read(&cp_monitor->mon_version),
2959 fore200e->bus->read(&cp_monitor->bstat));
2960 }
2961
2962 if (!left--)
2963 return sprintf(page,
2964 "\n"
2965 " device statistics:\n"
2966 " 4b5b:\n"
2967 " crc_header_errors:\t\t%10u\n"
2968 " framing_errors:\t\t%10u\n",
2969 cpu_to_be32(fore200e->stats->phy.crc_header_errors),
2970 cpu_to_be32(fore200e->stats->phy.framing_errors));
2971
2972 if (!left--)
2973 return sprintf(page, "\n"
2974 " OC-3:\n"
2975 " section_bip8_errors:\t%10u\n"
2976 " path_bip8_errors:\t\t%10u\n"
2977 " line_bip24_errors:\t\t%10u\n"
2978 " line_febe_errors:\t\t%10u\n"
2979 " path_febe_errors:\t\t%10u\n"
2980 " corr_hcs_errors:\t\t%10u\n"
2981 " ucorr_hcs_errors:\t\t%10u\n",
2982 cpu_to_be32(fore200e->stats->oc3.section_bip8_errors),
2983 cpu_to_be32(fore200e->stats->oc3.path_bip8_errors),
2984 cpu_to_be32(fore200e->stats->oc3.line_bip24_errors),
2985 cpu_to_be32(fore200e->stats->oc3.line_febe_errors),
2986 cpu_to_be32(fore200e->stats->oc3.path_febe_errors),
2987 cpu_to_be32(fore200e->stats->oc3.corr_hcs_errors),
2988 cpu_to_be32(fore200e->stats->oc3.ucorr_hcs_errors));
2989
2990 if (!left--)
2991 return sprintf(page,"\n"
2992 " ATM:\t\t\t\t cells\n"
2993 " TX:\t\t\t%10u\n"
2994 " RX:\t\t\t%10u\n"
2995 " vpi out of range:\t\t%10u\n"
2996 " vpi no conn:\t\t%10u\n"
2997 " vci out of range:\t\t%10u\n"
2998 " vci no conn:\t\t%10u\n",
2999 cpu_to_be32(fore200e->stats->atm.cells_transmitted),
3000 cpu_to_be32(fore200e->stats->atm.cells_received),
3001 cpu_to_be32(fore200e->stats->atm.vpi_bad_range),
3002 cpu_to_be32(fore200e->stats->atm.vpi_no_conn),
3003 cpu_to_be32(fore200e->stats->atm.vci_bad_range),
3004 cpu_to_be32(fore200e->stats->atm.vci_no_conn));
3005
3006 if (!left--)
3007 return sprintf(page,"\n"
3008 " AAL0:\t\t\t cells\n"
3009 " TX:\t\t\t%10u\n"
3010 " RX:\t\t\t%10u\n"
3011 " dropped:\t\t\t%10u\n",
3012 cpu_to_be32(fore200e->stats->aal0.cells_transmitted),
3013 cpu_to_be32(fore200e->stats->aal0.cells_received),
3014 cpu_to_be32(fore200e->stats->aal0.cells_dropped));
3015
3016 if (!left--)
3017 return sprintf(page,"\n"
3018 " AAL3/4:\n"
3019 " SAR sublayer:\t\t cells\n"
3020 " TX:\t\t\t%10u\n"
3021 " RX:\t\t\t%10u\n"
3022 " dropped:\t\t\t%10u\n"
3023 " CRC errors:\t\t%10u\n"
3024 " protocol errors:\t\t%10u\n\n"
3025 " CS sublayer:\t\t PDUs\n"
3026 " TX:\t\t\t%10u\n"
3027 " RX:\t\t\t%10u\n"
3028 " dropped:\t\t\t%10u\n"
3029 " protocol errors:\t\t%10u\n",
3030 cpu_to_be32(fore200e->stats->aal34.cells_transmitted),
3031 cpu_to_be32(fore200e->stats->aal34.cells_received),
3032 cpu_to_be32(fore200e->stats->aal34.cells_dropped),
3033 cpu_to_be32(fore200e->stats->aal34.cells_crc_errors),
3034 cpu_to_be32(fore200e->stats->aal34.cells_protocol_errors),
3035 cpu_to_be32(fore200e->stats->aal34.cspdus_transmitted),
3036 cpu_to_be32(fore200e->stats->aal34.cspdus_received),
3037 cpu_to_be32(fore200e->stats->aal34.cspdus_dropped),
3038 cpu_to_be32(fore200e->stats->aal34.cspdus_protocol_errors));
3039
3040 if (!left--)
3041 return sprintf(page,"\n"
3042 " AAL5:\n"
3043 " SAR sublayer:\t\t cells\n"
3044 " TX:\t\t\t%10u\n"
3045 " RX:\t\t\t%10u\n"
3046 " dropped:\t\t\t%10u\n"
3047 " congestions:\t\t%10u\n\n"
3048 " CS sublayer:\t\t PDUs\n"
3049 " TX:\t\t\t%10u\n"
3050 " RX:\t\t\t%10u\n"
3051 " dropped:\t\t\t%10u\n"
3052 " CRC errors:\t\t%10u\n"
3053 " protocol errors:\t\t%10u\n",
3054 cpu_to_be32(fore200e->stats->aal5.cells_transmitted),
3055 cpu_to_be32(fore200e->stats->aal5.cells_received),
3056 cpu_to_be32(fore200e->stats->aal5.cells_dropped),
3057 cpu_to_be32(fore200e->stats->aal5.congestion_experienced),
3058 cpu_to_be32(fore200e->stats->aal5.cspdus_transmitted),
3059 cpu_to_be32(fore200e->stats->aal5.cspdus_received),
3060 cpu_to_be32(fore200e->stats->aal5.cspdus_dropped),
3061 cpu_to_be32(fore200e->stats->aal5.cspdus_crc_errors),
3062 cpu_to_be32(fore200e->stats->aal5.cspdus_protocol_errors));
3063
3064 if (!left--)
3065 return sprintf(page,"\n"
3066 " AUX:\t\t allocation failures\n"
3067 " small b1:\t\t\t%10u\n"
3068 " large b1:\t\t\t%10u\n"
3069 " small b2:\t\t\t%10u\n"
3070 " large b2:\t\t\t%10u\n"
3071 " RX PDUs:\t\t\t%10u\n"
3072 " TX PDUs:\t\t\t%10lu\n",
3073 cpu_to_be32(fore200e->stats->aux.small_b1_failed),
3074 cpu_to_be32(fore200e->stats->aux.large_b1_failed),
3075 cpu_to_be32(fore200e->stats->aux.small_b2_failed),
3076 cpu_to_be32(fore200e->stats->aux.large_b2_failed),
3077 cpu_to_be32(fore200e->stats->aux.rpd_alloc_failed),
3078 fore200e->tx_sat);
3079
3080 if (!left--)
3081 return sprintf(page,"\n"
3082 " receive carrier:\t\t\t%s\n",
3083 fore200e->stats->aux.receive_carrier ? "ON" : "OFF!");
3084
3085 if (!left--) {
3086 return sprintf(page,"\n"
3087 " VCCs:\n address VPI VCI AAL "
3088 "TX PDUs TX min/max size RX PDUs RX min/max size\n");
3089 }
3090
3091 for (i = 0; i < NBR_CONNECT; i++) {
3092
3093 vcc = fore200e->vc_map[i].vcc;
3094
3095 if (vcc == NULL)
3096 continue;
3097
3098 spin_lock_irqsave(&fore200e->q_lock, flags);
3099
3100 if (vcc && test_bit(ATM_VF_READY, &vcc->flags) && !left--) {
3101
3102 fore200e_vcc = FORE200E_VCC(vcc);
3103 ASSERT(fore200e_vcc);
3104
3105 len = sprintf(page,
3106 " %08x %03d %05d %1d %09lu %05d/%05d %09lu %05d/%05d\n",
3107 (u32)(unsigned long)vcc,
3108 vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
3109 fore200e_vcc->tx_pdu,
3110 fore200e_vcc->tx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->tx_min_pdu,
3111 fore200e_vcc->tx_max_pdu,
3112 fore200e_vcc->rx_pdu,
3113 fore200e_vcc->rx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->rx_min_pdu,
3114 fore200e_vcc->rx_max_pdu);
3115
3116 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3117 return len;
3118 }
3119
3120 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3121 }
3122
3123 return 0;
3124 }
3125
3126 module_init(fore200e_module_init);
3127 module_exit(fore200e_module_cleanup);
3128
3129
3130 static const struct atmdev_ops fore200e_ops =
3131 {
3132 .open = fore200e_open,
3133 .close = fore200e_close,
3134 .ioctl = fore200e_ioctl,
3135 .getsockopt = fore200e_getsockopt,
3136 .setsockopt = fore200e_setsockopt,
3137 .send = fore200e_send,
3138 .change_qos = fore200e_change_qos,
3139 .proc_read = fore200e_proc_read,
3140 .owner = THIS_MODULE
3141 };
3142
3143
3144 #ifdef CONFIG_ATM_FORE200E_PCA
3145 extern const unsigned char _fore200e_pca_fw_data[];
3146 extern const unsigned int _fore200e_pca_fw_size;
3147 #endif
3148 #ifdef CONFIG_ATM_FORE200E_SBA
3149 extern const unsigned char _fore200e_sba_fw_data[];
3150 extern const unsigned int _fore200e_sba_fw_size;
3151 #endif
3152
3153 static const struct fore200e_bus fore200e_bus[] = {
3154 #ifdef CONFIG_ATM_FORE200E_PCA
3155 { "PCA-200E", "pca200e", 32, 4, 32,
3156 _fore200e_pca_fw_data, &_fore200e_pca_fw_size,
3157 fore200e_pca_read,
3158 fore200e_pca_write,
3159 fore200e_pca_dma_map,
3160 fore200e_pca_dma_unmap,
3161 fore200e_pca_dma_sync_for_cpu,
3162 fore200e_pca_dma_sync_for_device,
3163 fore200e_pca_dma_chunk_alloc,
3164 fore200e_pca_dma_chunk_free,
3165 NULL,
3166 fore200e_pca_configure,
3167 fore200e_pca_map,
3168 fore200e_pca_reset,
3169 fore200e_pca_prom_read,
3170 fore200e_pca_unmap,
3171 NULL,
3172 fore200e_pca_irq_check,
3173 fore200e_pca_irq_ack,
3174 fore200e_pca_proc_read,
3175 },
3176 #endif
3177 #ifdef CONFIG_ATM_FORE200E_SBA
3178 { "SBA-200E", "sba200e", 32, 64, 32,
3179 _fore200e_sba_fw_data, &_fore200e_sba_fw_size,
3180 fore200e_sba_read,
3181 fore200e_sba_write,
3182 fore200e_sba_dma_map,
3183 fore200e_sba_dma_unmap,
3184 fore200e_sba_dma_sync_for_cpu,
3185 fore200e_sba_dma_sync_for_device,
3186 fore200e_sba_dma_chunk_alloc,
3187 fore200e_sba_dma_chunk_free,
3188 fore200e_sba_detect,
3189 fore200e_sba_configure,
3190 fore200e_sba_map,
3191 fore200e_sba_reset,
3192 fore200e_sba_prom_read,
3193 fore200e_sba_unmap,
3194 fore200e_sba_irq_enable,
3195 fore200e_sba_irq_check,
3196 fore200e_sba_irq_ack,
3197 fore200e_sba_proc_read,
3198 },
3199 #endif
3200 {}
3201 };
3202
3203 #ifdef MODULE_LICENSE
3204 MODULE_LICENSE("GPL");
3205 #endif
linux v2.6.22.y-op