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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / atm / fore200e.c
blob10f000dbe448e149e599caf2eeda9f7ec1b2a6bf
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 <linux/firmware.h>
40 #include <asm/io.h>
41 #include <asm/string.h>
42 #include <asm/page.h>
43 #include <asm/irq.h>
44 #include <asm/dma.h>
45 #include <asm/byteorder.h>
46 #include <asm/uaccess.h>
47 #include <asm/atomic.h>
48
49 #ifdef CONFIG_SBUS
50 #include <linux/of.h>
51 #include <linux/of_device.h>
52 #include <asm/idprom.h>
53 #include <asm/openprom.h>
54 #include <asm/oplib.h>
55 #include <asm/pgtable.h>
56 #endif
57
58 #if defined(CONFIG_ATM_FORE200E_USE_TASKLET) /* defer interrupt work to a tasklet */
59 #define FORE200E_USE_TASKLET
60 #endif
61
62 #if 0 /* enable the debugging code of the buffer supply queues */
63 #define FORE200E_BSQ_DEBUG
64 #endif
65
66 #if 1 /* ensure correct handling of 52-byte AAL0 SDUs expected by atmdump-like apps */
67 #define FORE200E_52BYTE_AAL0_SDU
68 #endif
69
70 #include "fore200e.h"
71 #include "suni.h"
72
73 #define FORE200E_VERSION "0.3e"
74
75 #define FORE200E "fore200e: "
76
77 #if 0 /* override .config */
78 #define CONFIG_ATM_FORE200E_DEBUG 1
79 #endif
80 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
81 #define DPRINTK(level, format, args...) do { if (CONFIG_ATM_FORE200E_DEBUG >= (level)) \
82 printk(FORE200E format, ##args); } while (0)
83 #else
84 #define DPRINTK(level, format, args...) do {} while (0)
85 #endif
86
87
88 #define FORE200E_ALIGN(addr, alignment) \
89 ((((unsigned long)(addr) + (alignment - 1)) & ~(alignment - 1)) - (unsigned long)(addr))
90
91 #define FORE200E_DMA_INDEX(dma_addr, type, index) ((dma_addr) + (index) * sizeof(type))
92
93 #define FORE200E_INDEX(virt_addr, type, index) (&((type *)(virt_addr))[ index ])
94
95 #define FORE200E_NEXT_ENTRY(index, modulo) (index = ++(index) % (modulo))
96
97 #if 1
98 #define ASSERT(expr) if (!(expr)) { \
99 printk(FORE200E "assertion failed! %s[%d]: %s\n", \
100 __func__, __LINE__, #expr); \
101 panic(FORE200E "%s", __func__); \
102 }
103 #else
104 #define ASSERT(expr) do {} while (0)
105 #endif
106
107
108 static const struct atmdev_ops fore200e_ops;
109 static const struct fore200e_bus fore200e_bus[];
110
111 static LIST_HEAD(fore200e_boards);
112
113
114 MODULE_AUTHOR("Christophe Lizzi - credits to Uwe Dannowski and Heikki Vatiainen");
115 MODULE_DESCRIPTION("FORE Systems 200E-series ATM driver - version " FORE200E_VERSION);
116 MODULE_SUPPORTED_DEVICE("PCA-200E, SBA-200E");
117
118
119 static const int fore200e_rx_buf_nbr[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
120 { BUFFER_S1_NBR, BUFFER_L1_NBR },
121 { BUFFER_S2_NBR, BUFFER_L2_NBR }
122 };
123
124 static const int fore200e_rx_buf_size[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ] = {
125 { BUFFER_S1_SIZE, BUFFER_L1_SIZE },
126 { BUFFER_S2_SIZE, BUFFER_L2_SIZE }
127 };
128
129
130 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG > 0)
131 static const char* fore200e_traffic_class[] = { "NONE", "UBR", "CBR", "VBR", "ABR", "ANY" };
132 #endif
133
134
135 #if 0 /* currently unused */
136 static int
137 fore200e_fore2atm_aal(enum fore200e_aal aal)
138 {
139 switch(aal) {
140 case FORE200E_AAL0: return ATM_AAL0;
141 case FORE200E_AAL34: return ATM_AAL34;
142 case FORE200E_AAL5: return ATM_AAL5;
143 }
144
145 return -EINVAL;
146 }
147 #endif
148
149
150 static enum fore200e_aal
151 fore200e_atm2fore_aal(int aal)
152 {
153 switch(aal) {
154 case ATM_AAL0: return FORE200E_AAL0;
155 case ATM_AAL34: return FORE200E_AAL34;
156 case ATM_AAL1:
157 case ATM_AAL2:
158 case ATM_AAL5: return FORE200E_AAL5;
159 }
160
161 return -EINVAL;
162 }
163
164
165 static char*
166 fore200e_irq_itoa(int irq)
167 {
168 static char str[8];
169 sprintf(str, "%d", irq);
170 return str;
171 }
172
173
174 /* allocate and align a chunk of memory intended to hold the data behing exchanged
175 between the driver and the adapter (using streaming DVMA) */
176
177 static int
178 fore200e_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk, int size, int alignment, int direction)
179 {
180 unsigned long offset = 0;
181
182 if (alignment <= sizeof(int))
183 alignment = 0;
184
185 chunk->alloc_size = size + alignment;
186 chunk->align_size = size;
187 chunk->direction = direction;
188
189 chunk->alloc_addr = kzalloc(chunk->alloc_size, GFP_KERNEL | GFP_DMA);
190 if (chunk->alloc_addr == NULL)
191 return -ENOMEM;
192
193 if (alignment > 0)
194 offset = FORE200E_ALIGN(chunk->alloc_addr, alignment);
195
196 chunk->align_addr = chunk->alloc_addr + offset;
197
198 chunk->dma_addr = fore200e->bus->dma_map(fore200e, chunk->align_addr, chunk->align_size, direction);
199
200 return 0;
201 }
202
203
204 /* free a chunk of memory */
205
206 static void
207 fore200e_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
208 {
209 fore200e->bus->dma_unmap(fore200e, chunk->dma_addr, chunk->dma_size, chunk->direction);
210
211 kfree(chunk->alloc_addr);
212 }
213
214
215 static void
216 fore200e_spin(int msecs)
217 {
218 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
219 while (time_before(jiffies, timeout));
220 }
221
222
223 static int
224 fore200e_poll(struct fore200e* fore200e, volatile u32* addr, u32 val, int msecs)
225 {
226 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
227 int ok;
228
229 mb();
230 do {
231 if ((ok = (*addr == val)) || (*addr & STATUS_ERROR))
232 break;
233
234 } while (time_before(jiffies, timeout));
235
236 #if 1
237 if (!ok) {
238 printk(FORE200E "cmd polling failed, got status 0x%08x, expected 0x%08x\n",
239 *addr, val);
240 }
241 #endif
242
243 return ok;
244 }
245
246
247 static int
248 fore200e_io_poll(struct fore200e* fore200e, volatile u32 __iomem *addr, u32 val, int msecs)
249 {
250 unsigned long timeout = jiffies + msecs_to_jiffies(msecs);
251 int ok;
252
253 do {
254 if ((ok = (fore200e->bus->read(addr) == val)))
255 break;
256
257 } while (time_before(jiffies, timeout));
258
259 #if 1
260 if (!ok) {
261 printk(FORE200E "I/O polling failed, got status 0x%08x, expected 0x%08x\n",
262 fore200e->bus->read(addr), val);
263 }
264 #endif
265
266 return ok;
267 }
268
269
270 static void
271 fore200e_free_rx_buf(struct fore200e* fore200e)
272 {
273 int scheme, magn, nbr;
274 struct buffer* buffer;
275
276 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
277 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
278
279 if ((buffer = fore200e->host_bsq[ scheme ][ magn ].buffer) != NULL) {
280
281 for (nbr = 0; nbr < fore200e_rx_buf_nbr[ scheme ][ magn ]; nbr++) {
282
283 struct chunk* data = &buffer[ nbr ].data;
284
285 if (data->alloc_addr != NULL)
286 fore200e_chunk_free(fore200e, data);
287 }
288 }
289 }
290 }
291 }
292
293
294 static void
295 fore200e_uninit_bs_queue(struct fore200e* fore200e)
296 {
297 int scheme, magn;
298
299 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
300 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
301
302 struct chunk* status = &fore200e->host_bsq[ scheme ][ magn ].status;
303 struct chunk* rbd_block = &fore200e->host_bsq[ scheme ][ magn ].rbd_block;
304
305 if (status->alloc_addr)
306 fore200e->bus->dma_chunk_free(fore200e, status);
307
308 if (rbd_block->alloc_addr)
309 fore200e->bus->dma_chunk_free(fore200e, rbd_block);
310 }
311 }
312 }
313
314
315 static int
316 fore200e_reset(struct fore200e* fore200e, int diag)
317 {
318 int ok;
319
320 fore200e->cp_monitor = fore200e->virt_base + FORE200E_CP_MONITOR_OFFSET;
321
322 fore200e->bus->write(BSTAT_COLD_START, &fore200e->cp_monitor->bstat);
323
324 fore200e->bus->reset(fore200e);
325
326 if (diag) {
327 ok = fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_SELFTEST_OK, 1000);
328 if (ok == 0) {
329
330 printk(FORE200E "device %s self-test failed\n", fore200e->name);
331 return -ENODEV;
332 }
333
334 printk(FORE200E "device %s self-test passed\n", fore200e->name);
335
336 fore200e->state = FORE200E_STATE_RESET;
337 }
338
339 return 0;
340 }
341
342
343 static void
344 fore200e_shutdown(struct fore200e* fore200e)
345 {
346 printk(FORE200E "removing device %s at 0x%lx, IRQ %s\n",
347 fore200e->name, fore200e->phys_base,
348 fore200e_irq_itoa(fore200e->irq));
349
350 if (fore200e->state > FORE200E_STATE_RESET) {
351 /* first, reset the board to prevent further interrupts or data transfers */
352 fore200e_reset(fore200e, 0);
353 }
354
355 /* then, release all allocated resources */
356 switch(fore200e->state) {
357
358 case FORE200E_STATE_COMPLETE:
359 kfree(fore200e->stats);
360
361 case FORE200E_STATE_IRQ:
362 free_irq(fore200e->irq, fore200e->atm_dev);
363
364 case FORE200E_STATE_ALLOC_BUF:
365 fore200e_free_rx_buf(fore200e);
366
367 case FORE200E_STATE_INIT_BSQ:
368 fore200e_uninit_bs_queue(fore200e);
369
370 case FORE200E_STATE_INIT_RXQ:
371 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.status);
372 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_rxq.rpd);
373
374 case FORE200E_STATE_INIT_TXQ:
375 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.status);
376 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_txq.tpd);
377
378 case FORE200E_STATE_INIT_CMDQ:
379 fore200e->bus->dma_chunk_free(fore200e, &fore200e->host_cmdq.status);
380
381 case FORE200E_STATE_INITIALIZE:
382 /* nothing to do for that state */
383
384 case FORE200E_STATE_START_FW:
385 /* nothing to do for that state */
386
387 case FORE200E_STATE_RESET:
388 /* nothing to do for that state */
389
390 case FORE200E_STATE_MAP:
391 fore200e->bus->unmap(fore200e);
392
393 case FORE200E_STATE_CONFIGURE:
394 /* nothing to do for that state */
395
396 case FORE200E_STATE_REGISTER:
397 /* XXX shouldn't we *start* by deregistering the device? */
398 atm_dev_deregister(fore200e->atm_dev);
399
400 case FORE200E_STATE_BLANK:
401 /* nothing to do for that state */
402 break;
403 }
404 }
405
406
407 #ifdef CONFIG_PCI
408
409 static u32 fore200e_pca_read(volatile u32 __iomem *addr)
410 {
411 /* on big-endian hosts, the board is configured to convert
412 the endianess of slave RAM accesses */
413 return le32_to_cpu(readl(addr));
414 }
415
416
417 static void fore200e_pca_write(u32 val, volatile u32 __iomem *addr)
418 {
419 /* on big-endian hosts, the board is configured to convert
420 the endianess of slave RAM accesses */
421 writel(cpu_to_le32(val), addr);
422 }
423
424
425 static u32
426 fore200e_pca_dma_map(struct fore200e* fore200e, void* virt_addr, int size, int direction)
427 {
428 u32 dma_addr = pci_map_single((struct pci_dev*)fore200e->bus_dev, virt_addr, size, direction);
429
430 DPRINTK(3, "PCI DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d, --> dma_addr = 0x%08x\n",
431 virt_addr, size, direction, dma_addr);
432
433 return dma_addr;
434 }
435
436
437 static void
438 fore200e_pca_dma_unmap(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
439 {
440 DPRINTK(3, "PCI DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d\n",
441 dma_addr, size, direction);
442
443 pci_unmap_single((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
444 }
445
446
447 static void
448 fore200e_pca_dma_sync_for_cpu(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
449 {
450 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
451
452 pci_dma_sync_single_for_cpu((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
453 }
454
455 static void
456 fore200e_pca_dma_sync_for_device(struct fore200e* fore200e, u32 dma_addr, int size, int direction)
457 {
458 DPRINTK(3, "PCI DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
459
460 pci_dma_sync_single_for_device((struct pci_dev*)fore200e->bus_dev, dma_addr, size, direction);
461 }
462
463
464 /* allocate a DMA consistent chunk of memory intended to act as a communication mechanism
465 (to hold descriptors, status, queues, etc.) shared by the driver and the adapter */
466
467 static int
468 fore200e_pca_dma_chunk_alloc(struct fore200e* fore200e, struct chunk* chunk,
469 int size, int nbr, int alignment)
470 {
471 /* returned chunks are page-aligned */
472 chunk->alloc_size = size * nbr;
473 chunk->alloc_addr = pci_alloc_consistent((struct pci_dev*)fore200e->bus_dev,
474 chunk->alloc_size,
475 &chunk->dma_addr);
476
477 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
478 return -ENOMEM;
479
480 chunk->align_addr = chunk->alloc_addr;
481
482 return 0;
483 }
484
485
486 /* free a DMA consistent chunk of memory */
487
488 static void
489 fore200e_pca_dma_chunk_free(struct fore200e* fore200e, struct chunk* chunk)
490 {
491 pci_free_consistent((struct pci_dev*)fore200e->bus_dev,
492 chunk->alloc_size,
493 chunk->alloc_addr,
494 chunk->dma_addr);
495 }
496
497
498 static int
499 fore200e_pca_irq_check(struct fore200e* fore200e)
500 {
501 /* this is a 1 bit register */
502 int irq_posted = readl(fore200e->regs.pca.psr);
503
504 #if defined(CONFIG_ATM_FORE200E_DEBUG) && (CONFIG_ATM_FORE200E_DEBUG == 2)
505 if (irq_posted && (readl(fore200e->regs.pca.hcr) & PCA200E_HCR_OUTFULL)) {
506 DPRINTK(2,"FIFO OUT full, device %d\n", fore200e->atm_dev->number);
507 }
508 #endif
509
510 return irq_posted;
511 }
512
513
514 static void
515 fore200e_pca_irq_ack(struct fore200e* fore200e)
516 {
517 writel(PCA200E_HCR_CLRINTR, fore200e->regs.pca.hcr);
518 }
519
520
521 static void
522 fore200e_pca_reset(struct fore200e* fore200e)
523 {
524 writel(PCA200E_HCR_RESET, fore200e->regs.pca.hcr);
525 fore200e_spin(10);
526 writel(0, fore200e->regs.pca.hcr);
527 }
528
529
530 static int __devinit
531 fore200e_pca_map(struct fore200e* fore200e)
532 {
533 DPRINTK(2, "device %s being mapped in memory\n", fore200e->name);
534
535 fore200e->virt_base = ioremap(fore200e->phys_base, PCA200E_IOSPACE_LENGTH);
536
537 if (fore200e->virt_base == NULL) {
538 printk(FORE200E "can't map device %s\n", fore200e->name);
539 return -EFAULT;
540 }
541
542 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
543
544 /* gain access to the PCA specific registers */
545 fore200e->regs.pca.hcr = fore200e->virt_base + PCA200E_HCR_OFFSET;
546 fore200e->regs.pca.imr = fore200e->virt_base + PCA200E_IMR_OFFSET;
547 fore200e->regs.pca.psr = fore200e->virt_base + PCA200E_PSR_OFFSET;
548
549 fore200e->state = FORE200E_STATE_MAP;
550 return 0;
551 }
552
553
554 static void
555 fore200e_pca_unmap(struct fore200e* fore200e)
556 {
557 DPRINTK(2, "device %s being unmapped from memory\n", fore200e->name);
558
559 if (fore200e->virt_base != NULL)
560 iounmap(fore200e->virt_base);
561 }
562
563
564 static int __devinit
565 fore200e_pca_configure(struct fore200e* fore200e)
566 {
567 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
568 u8 master_ctrl, latency;
569
570 DPRINTK(2, "device %s being configured\n", fore200e->name);
571
572 if ((pci_dev->irq == 0) || (pci_dev->irq == 0xFF)) {
573 printk(FORE200E "incorrect IRQ setting - misconfigured PCI-PCI bridge?\n");
574 return -EIO;
575 }
576
577 pci_read_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, &master_ctrl);
578
579 master_ctrl = master_ctrl
580 #if defined(__BIG_ENDIAN)
581 /* request the PCA board to convert the endianess of slave RAM accesses */
582 | PCA200E_CTRL_CONVERT_ENDIAN
583 #endif
584 #if 0
585 | PCA200E_CTRL_DIS_CACHE_RD
586 | PCA200E_CTRL_DIS_WRT_INVAL
587 | PCA200E_CTRL_ENA_CONT_REQ_MODE
588 | PCA200E_CTRL_2_CACHE_WRT_INVAL
589 #endif
590 | PCA200E_CTRL_LARGE_PCI_BURSTS;
591
592 pci_write_config_byte(pci_dev, PCA200E_PCI_MASTER_CTRL, master_ctrl);
593
594 /* raise latency from 32 (default) to 192, as this seems to prevent NIC
595 lockups (under heavy rx loads) due to continuous 'FIFO OUT full' condition.
596 this may impact the performances of other PCI devices on the same bus, though */
597 latency = 192;
598 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
599
600 fore200e->state = FORE200E_STATE_CONFIGURE;
601 return 0;
602 }
603
604
605 static int __init
606 fore200e_pca_prom_read(struct fore200e* fore200e, struct prom_data* prom)
607 {
608 struct host_cmdq* cmdq = &fore200e->host_cmdq;
609 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
610 struct prom_opcode opcode;
611 int ok;
612 u32 prom_dma;
613
614 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
615
616 opcode.opcode = OPCODE_GET_PROM;
617 opcode.pad = 0;
618
619 prom_dma = fore200e->bus->dma_map(fore200e, prom, sizeof(struct prom_data), DMA_FROM_DEVICE);
620
621 fore200e->bus->write(prom_dma, &entry->cp_entry->cmd.prom_block.prom_haddr);
622
623 *entry->status = STATUS_PENDING;
624
625 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.prom_block.opcode);
626
627 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
628
629 *entry->status = STATUS_FREE;
630
631 fore200e->bus->dma_unmap(fore200e, prom_dma, sizeof(struct prom_data), DMA_FROM_DEVICE);
632
633 if (ok == 0) {
634 printk(FORE200E "unable to get PROM data from device %s\n", fore200e->name);
635 return -EIO;
636 }
637
638 #if defined(__BIG_ENDIAN)
639
640 #define swap_here(addr) (*((u32*)(addr)) = swab32( *((u32*)(addr)) ))
641
642 /* MAC address is stored as little-endian */
643 swap_here(&prom->mac_addr[0]);
644 swap_here(&prom->mac_addr[4]);
645 #endif
646
647 return 0;
648 }
649
650
651 static int
652 fore200e_pca_proc_read(struct fore200e* fore200e, char *page)
653 {
654 struct pci_dev* pci_dev = (struct pci_dev*)fore200e->bus_dev;
655
656 return sprintf(page, " PCI bus/slot/function:\t%d/%d/%d\n",
657 pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
658 }
659
660 #endif /* CONFIG_PCI */
661
662
663 #ifdef CONFIG_SBUS
664
665 static u32 fore200e_sba_read(volatile u32 __iomem *addr)
666 {
667 return sbus_readl(addr);
668 }
669
670 static void fore200e_sba_write(u32 val, volatile u32 __iomem *addr)
671 {
672 sbus_writel(val, addr);
673 }
674
675 static u32 fore200e_sba_dma_map(struct fore200e *fore200e, void* virt_addr, int size, int direction)
676 {
677 struct of_device *op = fore200e->bus_dev;
678 u32 dma_addr;
679
680 dma_addr = dma_map_single(&op->dev, virt_addr, size, direction);
681
682 DPRINTK(3, "SBUS DVMA mapping: virt_addr = 0x%p, size = %d, direction = %d --> dma_addr = 0x%08x\n",
683 virt_addr, size, direction, dma_addr);
684
685 return dma_addr;
686 }
687
688 static void fore200e_sba_dma_unmap(struct fore200e *fore200e, u32 dma_addr, int size, int direction)
689 {
690 struct of_device *op = fore200e->bus_dev;
691
692 DPRINTK(3, "SBUS DVMA unmapping: dma_addr = 0x%08x, size = %d, direction = %d,\n",
693 dma_addr, size, direction);
694
695 dma_unmap_single(&op->dev, dma_addr, size, direction);
696 }
697
698 static void fore200e_sba_dma_sync_for_cpu(struct fore200e *fore200e, u32 dma_addr, int size, int direction)
699 {
700 struct of_device *op = fore200e->bus_dev;
701
702 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
703
704 dma_sync_single_for_cpu(&op->dev, dma_addr, size, direction);
705 }
706
707 static void fore200e_sba_dma_sync_for_device(struct fore200e *fore200e, u32 dma_addr, int size, int direction)
708 {
709 struct of_device *op = fore200e->bus_dev;
710
711 DPRINTK(3, "SBUS DVMA sync: dma_addr = 0x%08x, size = %d, direction = %d\n", dma_addr, size, direction);
712
713 dma_sync_single_for_device(&op->dev, dma_addr, size, direction);
714 }
715
716 /* Allocate a DVMA consistent chunk of memory intended to act as a communication mechanism
717 * (to hold descriptors, status, queues, etc.) shared by the driver and the adapter.
718 */
719 static int fore200e_sba_dma_chunk_alloc(struct fore200e *fore200e, struct chunk *chunk,
720 int size, int nbr, int alignment)
721 {
722 struct of_device *op = fore200e->bus_dev;
723
724 chunk->alloc_size = chunk->align_size = size * nbr;
725
726 /* returned chunks are page-aligned */
727 chunk->alloc_addr = dma_alloc_coherent(&op->dev, chunk->alloc_size,
728 &chunk->dma_addr, GFP_ATOMIC);
729
730 if ((chunk->alloc_addr == NULL) || (chunk->dma_addr == 0))
731 return -ENOMEM;
732
733 chunk->align_addr = chunk->alloc_addr;
734
735 return 0;
736 }
737
738 /* free a DVMA consistent chunk of memory */
739 static void fore200e_sba_dma_chunk_free(struct fore200e *fore200e, struct chunk *chunk)
740 {
741 struct of_device *op = fore200e->bus_dev;
742
743 dma_free_coherent(&op->dev, chunk->alloc_size,
744 chunk->alloc_addr, chunk->dma_addr);
745 }
746
747 static void fore200e_sba_irq_enable(struct fore200e *fore200e)
748 {
749 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
750 fore200e->bus->write(hcr | SBA200E_HCR_INTR_ENA, fore200e->regs.sba.hcr);
751 }
752
753 static int fore200e_sba_irq_check(struct fore200e *fore200e)
754 {
755 return fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_INTR_REQ;
756 }
757
758 static void fore200e_sba_irq_ack(struct fore200e *fore200e)
759 {
760 u32 hcr = fore200e->bus->read(fore200e->regs.sba.hcr) & SBA200E_HCR_STICKY;
761 fore200e->bus->write(hcr | SBA200E_HCR_INTR_CLR, fore200e->regs.sba.hcr);
762 }
763
764 static void fore200e_sba_reset(struct fore200e *fore200e)
765 {
766 fore200e->bus->write(SBA200E_HCR_RESET, fore200e->regs.sba.hcr);
767 fore200e_spin(10);
768 fore200e->bus->write(0, fore200e->regs.sba.hcr);
769 }
770
771 static int __init fore200e_sba_map(struct fore200e *fore200e)
772 {
773 struct of_device *op = fore200e->bus_dev;
774 unsigned int bursts;
775
776 /* gain access to the SBA specific registers */
777 fore200e->regs.sba.hcr = of_ioremap(&op->resource[0], 0, SBA200E_HCR_LENGTH, "SBA HCR");
778 fore200e->regs.sba.bsr = of_ioremap(&op->resource[1], 0, SBA200E_BSR_LENGTH, "SBA BSR");
779 fore200e->regs.sba.isr = of_ioremap(&op->resource[2], 0, SBA200E_ISR_LENGTH, "SBA ISR");
780 fore200e->virt_base = of_ioremap(&op->resource[3], 0, SBA200E_RAM_LENGTH, "SBA RAM");
781
782 if (!fore200e->virt_base) {
783 printk(FORE200E "unable to map RAM of device %s\n", fore200e->name);
784 return -EFAULT;
785 }
786
787 DPRINTK(1, "device %s mapped to 0x%p\n", fore200e->name, fore200e->virt_base);
788
789 fore200e->bus->write(0x02, fore200e->regs.sba.isr); /* XXX hardwired interrupt level */
790
791 /* get the supported DVMA burst sizes */
792 bursts = of_getintprop_default(op->node->parent, "burst-sizes", 0x00);
793
794 if (sbus_can_dma_64bit())
795 sbus_set_sbus64(&op->dev, bursts);
796
797 fore200e->state = FORE200E_STATE_MAP;
798 return 0;
799 }
800
801 static void fore200e_sba_unmap(struct fore200e *fore200e)
802 {
803 struct of_device *op = fore200e->bus_dev;
804
805 of_iounmap(&op->resource[0], fore200e->regs.sba.hcr, SBA200E_HCR_LENGTH);
806 of_iounmap(&op->resource[1], fore200e->regs.sba.bsr, SBA200E_BSR_LENGTH);
807 of_iounmap(&op->resource[2], fore200e->regs.sba.isr, SBA200E_ISR_LENGTH);
808 of_iounmap(&op->resource[3], fore200e->virt_base, SBA200E_RAM_LENGTH);
809 }
810
811 static int __init fore200e_sba_configure(struct fore200e *fore200e)
812 {
813 fore200e->state = FORE200E_STATE_CONFIGURE;
814 return 0;
815 }
816
817 static int __init fore200e_sba_prom_read(struct fore200e *fore200e, struct prom_data *prom)
818 {
819 struct of_device *op = fore200e->bus_dev;
820 const u8 *prop;
821 int len;
822
823 prop = of_get_property(op->node, "madaddrlo2", &len);
824 if (!prop)
825 return -ENODEV;
826 memcpy(&prom->mac_addr[4], prop, 4);
827
828 prop = of_get_property(op->node, "madaddrhi4", &len);
829 if (!prop)
830 return -ENODEV;
831 memcpy(&prom->mac_addr[2], prop, 4);
832
833 prom->serial_number = of_getintprop_default(op->node, "serialnumber", 0);
834 prom->hw_revision = of_getintprop_default(op->node, "promversion", 0);
835
836 return 0;
837 }
838
839 static int fore200e_sba_proc_read(struct fore200e *fore200e, char *page)
840 {
841 struct of_device *op = fore200e->bus_dev;
842 const struct linux_prom_registers *regs;
843
844 regs = of_get_property(op->node, "reg", NULL);
845
846 return sprintf(page, " SBUS slot/device:\t\t%d/'%s'\n",
847 (regs ? regs->which_io : 0), op->node->name);
848 }
849 #endif /* CONFIG_SBUS */
850
851
852 static void
853 fore200e_tx_irq(struct fore200e* fore200e)
854 {
855 struct host_txq* txq = &fore200e->host_txq;
856 struct host_txq_entry* entry;
857 struct atm_vcc* vcc;
858 struct fore200e_vc_map* vc_map;
859
860 if (fore200e->host_txq.txing == 0)
861 return;
862
863 for (;;) {
864
865 entry = &txq->host_entry[ txq->tail ];
866
867 if ((*entry->status & STATUS_COMPLETE) == 0) {
868 break;
869 }
870
871 DPRINTK(3, "TX COMPLETED: entry = %p [tail = %d], vc_map = %p, skb = %p\n",
872 entry, txq->tail, entry->vc_map, entry->skb);
873
874 /* free copy of misaligned data */
875 kfree(entry->data);
876
877 /* remove DMA mapping */
878 fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,
879 DMA_TO_DEVICE);
880
881 vc_map = entry->vc_map;
882
883 /* vcc closed since the time the entry was submitted for tx? */
884 if ((vc_map->vcc == NULL) ||
885 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
886
887 DPRINTK(1, "no ready vcc found for PDU sent on device %d\n",
888 fore200e->atm_dev->number);
889
890 dev_kfree_skb_any(entry->skb);
891 }
892 else {
893 ASSERT(vc_map->vcc);
894
895 /* vcc closed then immediately re-opened? */
896 if (vc_map->incarn != entry->incarn) {
897
898 /* when a vcc is closed, some PDUs may be still pending in the tx queue.
899 if the same vcc is immediately re-opened, those pending PDUs must
900 not be popped after the completion of their emission, as they refer
901 to the prior incarnation of that vcc. otherwise, sk_atm(vcc)->sk_wmem_alloc
902 would be decremented by the size of the (unrelated) skb, possibly
903 leading to a negative sk->sk_wmem_alloc count, ultimately freezing the vcc.
904 we thus bind the tx entry to the current incarnation of the vcc
905 when the entry is submitted for tx. When the tx later completes,
906 if the incarnation number of the tx entry does not match the one
907 of the vcc, then this implies that the vcc has been closed then re-opened.
908 we thus just drop the skb here. */
909
910 DPRINTK(1, "vcc closed-then-re-opened; dropping PDU sent on device %d\n",
911 fore200e->atm_dev->number);
912
913 dev_kfree_skb_any(entry->skb);
914 }
915 else {
916 vcc = vc_map->vcc;
917 ASSERT(vcc);
918
919 /* notify tx completion */
920 if (vcc->pop) {
921 vcc->pop(vcc, entry->skb);
922 }
923 else {
924 dev_kfree_skb_any(entry->skb);
925 }
926 #if 1
927 /* race fixed by the above incarnation mechanism, but... */
928 if (atomic_read(&sk_atm(vcc)->sk_wmem_alloc) < 0) {
929 atomic_set(&sk_atm(vcc)->sk_wmem_alloc, 0);
930 }
931 #endif
932 /* check error condition */
933 if (*entry->status & STATUS_ERROR)
934 atomic_inc(&vcc->stats->tx_err);
935 else
936 atomic_inc(&vcc->stats->tx);
937 }
938 }
939
940 *entry->status = STATUS_FREE;
941
942 fore200e->host_txq.txing--;
943
944 FORE200E_NEXT_ENTRY(txq->tail, QUEUE_SIZE_TX);
945 }
946 }
947
948
949 #ifdef FORE200E_BSQ_DEBUG
950 int bsq_audit(int where, struct host_bsq* bsq, int scheme, int magn)
951 {
952 struct buffer* buffer;
953 int count = 0;
954
955 buffer = bsq->freebuf;
956 while (buffer) {
957
958 if (buffer->supplied) {
959 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld supplied but in free list!\n",
960 where, scheme, magn, buffer->index);
961 }
962
963 if (buffer->magn != magn) {
964 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected magn = %d\n",
965 where, scheme, magn, buffer->index, buffer->magn);
966 }
967
968 if (buffer->scheme != scheme) {
969 printk(FORE200E "bsq_audit(%d): queue %d.%d, buffer %ld, unexpected scheme = %d\n",
970 where, scheme, magn, buffer->index, buffer->scheme);
971 }
972
973 if ((buffer->index < 0) || (buffer->index >= fore200e_rx_buf_nbr[ scheme ][ magn ])) {
974 printk(FORE200E "bsq_audit(%d): queue %d.%d, out of range buffer index = %ld !\n",
975 where, scheme, magn, buffer->index);
976 }
977
978 count++;
979 buffer = buffer->next;
980 }
981
982 if (count != bsq->freebuf_count) {
983 printk(FORE200E "bsq_audit(%d): queue %d.%d, %d bufs in free list, but freebuf_count = %d\n",
984 where, scheme, magn, count, bsq->freebuf_count);
985 }
986 return 0;
987 }
988 #endif
989
990
991 static void
992 fore200e_supply(struct fore200e* fore200e)
993 {
994 int scheme, magn, i;
995
996 struct host_bsq* bsq;
997 struct host_bsq_entry* entry;
998 struct buffer* buffer;
999
1000 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
1001 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
1002
1003 bsq = &fore200e->host_bsq[ scheme ][ magn ];
1004
1005 #ifdef FORE200E_BSQ_DEBUG
1006 bsq_audit(1, bsq, scheme, magn);
1007 #endif
1008 while (bsq->freebuf_count >= RBD_BLK_SIZE) {
1009
1010 DPRINTK(2, "supplying %d rx buffers to queue %d / %d, freebuf_count = %d\n",
1011 RBD_BLK_SIZE, scheme, magn, bsq->freebuf_count);
1012
1013 entry = &bsq->host_entry[ bsq->head ];
1014
1015 for (i = 0; i < RBD_BLK_SIZE; i++) {
1016
1017 /* take the first buffer in the free buffer list */
1018 buffer = bsq->freebuf;
1019 if (!buffer) {
1020 printk(FORE200E "no more free bufs in queue %d.%d, but freebuf_count = %d\n",
1021 scheme, magn, bsq->freebuf_count);
1022 return;
1023 }
1024 bsq->freebuf = buffer->next;
1025
1026 #ifdef FORE200E_BSQ_DEBUG
1027 if (buffer->supplied)
1028 printk(FORE200E "queue %d.%d, buffer %lu already supplied\n",
1029 scheme, magn, buffer->index);
1030 buffer->supplied = 1;
1031 #endif
1032 entry->rbd_block->rbd[ i ].buffer_haddr = buffer->data.dma_addr;
1033 entry->rbd_block->rbd[ i ].handle = FORE200E_BUF2HDL(buffer);
1034 }
1035
1036 FORE200E_NEXT_ENTRY(bsq->head, QUEUE_SIZE_BS);
1037
1038 /* decrease accordingly the number of free rx buffers */
1039 bsq->freebuf_count -= RBD_BLK_SIZE;
1040
1041 *entry->status = STATUS_PENDING;
1042 fore200e->bus->write(entry->rbd_block_dma, &entry->cp_entry->rbd_block_haddr);
1043 }
1044 }
1045 }
1046 }
1047
1048
1049 static int
1050 fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rpd)
1051 {
1052 struct sk_buff* skb;
1053 struct buffer* buffer;
1054 struct fore200e_vcc* fore200e_vcc;
1055 int i, pdu_len = 0;
1056 #ifdef FORE200E_52BYTE_AAL0_SDU
1057 u32 cell_header = 0;
1058 #endif
1059
1060 ASSERT(vcc);
1061
1062 fore200e_vcc = FORE200E_VCC(vcc);
1063 ASSERT(fore200e_vcc);
1064
1065 #ifdef FORE200E_52BYTE_AAL0_SDU
1066 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.rxtp.max_sdu == ATM_AAL0_SDU)) {
1067
1068 cell_header = (rpd->atm_header.gfc << ATM_HDR_GFC_SHIFT) |
1069 (rpd->atm_header.vpi << ATM_HDR_VPI_SHIFT) |
1070 (rpd->atm_header.vci << ATM_HDR_VCI_SHIFT) |
1071 (rpd->atm_header.plt << ATM_HDR_PTI_SHIFT) |
1072 rpd->atm_header.clp;
1073 pdu_len = 4;
1074 }
1075 #endif
1076
1077 /* compute total PDU length */
1078 for (i = 0; i < rpd->nseg; i++)
1079 pdu_len += rpd->rsd[ i ].length;
1080
1081 skb = alloc_skb(pdu_len, GFP_ATOMIC);
1082 if (skb == NULL) {
1083 DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
1084
1085 atomic_inc(&vcc->stats->rx_drop);
1086 return -ENOMEM;
1087 }
1088
1089 __net_timestamp(skb);
1090
1091 #ifdef FORE200E_52BYTE_AAL0_SDU
1092 if (cell_header) {
1093 *((u32*)skb_put(skb, 4)) = cell_header;
1094 }
1095 #endif
1096
1097 /* reassemble segments */
1098 for (i = 0; i < rpd->nseg; i++) {
1099
1100 /* rebuild rx buffer address from rsd handle */
1101 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1102
1103 /* Make device DMA transfer visible to CPU. */
1104 fore200e->bus->dma_sync_for_cpu(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1105
1106 memcpy(skb_put(skb, rpd->rsd[ i ].length), buffer->data.align_addr, rpd->rsd[ i ].length);
1107
1108 /* Now let the device get at it again. */
1109 fore200e->bus->dma_sync_for_device(fore200e, buffer->data.dma_addr, rpd->rsd[ i ].length, DMA_FROM_DEVICE);
1110 }
1111
1112 DPRINTK(3, "rx skb: len = %d, truesize = %d\n", skb->len, skb->truesize);
1113
1114 if (pdu_len < fore200e_vcc->rx_min_pdu)
1115 fore200e_vcc->rx_min_pdu = pdu_len;
1116 if (pdu_len > fore200e_vcc->rx_max_pdu)
1117 fore200e_vcc->rx_max_pdu = pdu_len;
1118 fore200e_vcc->rx_pdu++;
1119
1120 /* push PDU */
1121 if (atm_charge(vcc, skb->truesize) == 0) {
1122
1123 DPRINTK(2, "receive buffers saturated for %d.%d.%d - PDU dropped\n",
1124 vcc->itf, vcc->vpi, vcc->vci);
1125
1126 dev_kfree_skb_any(skb);
1127
1128 atomic_inc(&vcc->stats->rx_drop);
1129 return -ENOMEM;
1130 }
1131
1132 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1133
1134 vcc->push(vcc, skb);
1135 atomic_inc(&vcc->stats->rx);
1136
1137 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1138
1139 return 0;
1140 }
1141
1142
1143 static void
1144 fore200e_collect_rpd(struct fore200e* fore200e, struct rpd* rpd)
1145 {
1146 struct host_bsq* bsq;
1147 struct buffer* buffer;
1148 int i;
1149
1150 for (i = 0; i < rpd->nseg; i++) {
1151
1152 /* rebuild rx buffer address from rsd handle */
1153 buffer = FORE200E_HDL2BUF(rpd->rsd[ i ].handle);
1154
1155 bsq = &fore200e->host_bsq[ buffer->scheme ][ buffer->magn ];
1156
1157 #ifdef FORE200E_BSQ_DEBUG
1158 bsq_audit(2, bsq, buffer->scheme, buffer->magn);
1159
1160 if (buffer->supplied == 0)
1161 printk(FORE200E "queue %d.%d, buffer %ld was not supplied\n",
1162 buffer->scheme, buffer->magn, buffer->index);
1163 buffer->supplied = 0;
1164 #endif
1165
1166 /* re-insert the buffer into the free buffer list */
1167 buffer->next = bsq->freebuf;
1168 bsq->freebuf = buffer;
1169
1170 /* then increment the number of free rx buffers */
1171 bsq->freebuf_count++;
1172 }
1173 }
1174
1175
1176 static void
1177 fore200e_rx_irq(struct fore200e* fore200e)
1178 {
1179 struct host_rxq* rxq = &fore200e->host_rxq;
1180 struct host_rxq_entry* entry;
1181 struct atm_vcc* vcc;
1182 struct fore200e_vc_map* vc_map;
1183
1184 for (;;) {
1185
1186 entry = &rxq->host_entry[ rxq->head ];
1187
1188 /* no more received PDUs */
1189 if ((*entry->status & STATUS_COMPLETE) == 0)
1190 break;
1191
1192 vc_map = FORE200E_VC_MAP(fore200e, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1193
1194 if ((vc_map->vcc == NULL) ||
1195 (test_bit(ATM_VF_READY, &vc_map->vcc->flags) == 0)) {
1196
1197 DPRINTK(1, "no ready VC found for PDU received on %d.%d.%d\n",
1198 fore200e->atm_dev->number,
1199 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1200 }
1201 else {
1202 vcc = vc_map->vcc;
1203 ASSERT(vcc);
1204
1205 if ((*entry->status & STATUS_ERROR) == 0) {
1206
1207 fore200e_push_rpd(fore200e, vcc, entry->rpd);
1208 }
1209 else {
1210 DPRINTK(2, "damaged PDU on %d.%d.%d\n",
1211 fore200e->atm_dev->number,
1212 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
1213 atomic_inc(&vcc->stats->rx_err);
1214 }
1215 }
1216
1217 FORE200E_NEXT_ENTRY(rxq->head, QUEUE_SIZE_RX);
1218
1219 fore200e_collect_rpd(fore200e, entry->rpd);
1220
1221 /* rewrite the rpd address to ack the received PDU */
1222 fore200e->bus->write(entry->rpd_dma, &entry->cp_entry->rpd_haddr);
1223 *entry->status = STATUS_FREE;
1224
1225 fore200e_supply(fore200e);
1226 }
1227 }
1228
1229
1230 #ifndef FORE200E_USE_TASKLET
1231 static void
1232 fore200e_irq(struct fore200e* fore200e)
1233 {
1234 unsigned long flags;
1235
1236 spin_lock_irqsave(&fore200e->q_lock, flags);
1237 fore200e_rx_irq(fore200e);
1238 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1239
1240 spin_lock_irqsave(&fore200e->q_lock, flags);
1241 fore200e_tx_irq(fore200e);
1242 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1243 }
1244 #endif
1245
1246
1247 static irqreturn_t
1248 fore200e_interrupt(int irq, void* dev)
1249 {
1250 struct fore200e* fore200e = FORE200E_DEV((struct atm_dev*)dev);
1251
1252 if (fore200e->bus->irq_check(fore200e) == 0) {
1253
1254 DPRINTK(3, "interrupt NOT triggered by device %d\n", fore200e->atm_dev->number);
1255 return IRQ_NONE;
1256 }
1257 DPRINTK(3, "interrupt triggered by device %d\n", fore200e->atm_dev->number);
1258
1259 #ifdef FORE200E_USE_TASKLET
1260 tasklet_schedule(&fore200e->tx_tasklet);
1261 tasklet_schedule(&fore200e->rx_tasklet);
1262 #else
1263 fore200e_irq(fore200e);
1264 #endif
1265
1266 fore200e->bus->irq_ack(fore200e);
1267 return IRQ_HANDLED;
1268 }
1269
1270
1271 #ifdef FORE200E_USE_TASKLET
1272 static void
1273 fore200e_tx_tasklet(unsigned long data)
1274 {
1275 struct fore200e* fore200e = (struct fore200e*) data;
1276 unsigned long flags;
1277
1278 DPRINTK(3, "tx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1279
1280 spin_lock_irqsave(&fore200e->q_lock, flags);
1281 fore200e_tx_irq(fore200e);
1282 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1283 }
1284
1285
1286 static void
1287 fore200e_rx_tasklet(unsigned long data)
1288 {
1289 struct fore200e* fore200e = (struct fore200e*) data;
1290 unsigned long flags;
1291
1292 DPRINTK(3, "rx tasklet scheduled for device %d\n", fore200e->atm_dev->number);
1293
1294 spin_lock_irqsave(&fore200e->q_lock, flags);
1295 fore200e_rx_irq((struct fore200e*) data);
1296 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1297 }
1298 #endif
1299
1300
1301 static int
1302 fore200e_select_scheme(struct atm_vcc* vcc)
1303 {
1304 /* fairly balance the VCs over (identical) buffer schemes */
1305 int scheme = vcc->vci % 2 ? BUFFER_SCHEME_ONE : BUFFER_SCHEME_TWO;
1306
1307 DPRINTK(1, "VC %d.%d.%d uses buffer scheme %d\n",
1308 vcc->itf, vcc->vpi, vcc->vci, scheme);
1309
1310 return scheme;
1311 }
1312
1313
1314 static int
1315 fore200e_activate_vcin(struct fore200e* fore200e, int activate, struct atm_vcc* vcc, int mtu)
1316 {
1317 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1318 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1319 struct activate_opcode activ_opcode;
1320 struct deactivate_opcode deactiv_opcode;
1321 struct vpvc vpvc;
1322 int ok;
1323 enum fore200e_aal aal = fore200e_atm2fore_aal(vcc->qos.aal);
1324
1325 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1326
1327 if (activate) {
1328 FORE200E_VCC(vcc)->scheme = fore200e_select_scheme(vcc);
1329
1330 activ_opcode.opcode = OPCODE_ACTIVATE_VCIN;
1331 activ_opcode.aal = aal;
1332 activ_opcode.scheme = FORE200E_VCC(vcc)->scheme;
1333 activ_opcode.pad = 0;
1334 }
1335 else {
1336 deactiv_opcode.opcode = OPCODE_DEACTIVATE_VCIN;
1337 deactiv_opcode.pad = 0;
1338 }
1339
1340 vpvc.vci = vcc->vci;
1341 vpvc.vpi = vcc->vpi;
1342
1343 *entry->status = STATUS_PENDING;
1344
1345 if (activate) {
1346
1347 #ifdef FORE200E_52BYTE_AAL0_SDU
1348 mtu = 48;
1349 #endif
1350 /* the MTU is not used by the cp, except in the case of AAL0 */
1351 fore200e->bus->write(mtu, &entry->cp_entry->cmd.activate_block.mtu);
1352 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.vpvc);
1353 fore200e->bus->write(*(u32*)&activ_opcode, (u32 __iomem *)&entry->cp_entry->cmd.activate_block.opcode);
1354 }
1355 else {
1356 fore200e->bus->write(*(u32*)&vpvc, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.vpvc);
1357 fore200e->bus->write(*(u32*)&deactiv_opcode, (u32 __iomem *)&entry->cp_entry->cmd.deactivate_block.opcode);
1358 }
1359
1360 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1361
1362 *entry->status = STATUS_FREE;
1363
1364 if (ok == 0) {
1365 printk(FORE200E "unable to %s VC %d.%d.%d\n",
1366 activate ? "open" : "close", vcc->itf, vcc->vpi, vcc->vci);
1367 return -EIO;
1368 }
1369
1370 DPRINTK(1, "VC %d.%d.%d %sed\n", vcc->itf, vcc->vpi, vcc->vci,
1371 activate ? "open" : "clos");
1372
1373 return 0;
1374 }
1375
1376
1377 #define FORE200E_MAX_BACK2BACK_CELLS 255 /* XXX depends on CDVT */
1378
1379 static void
1380 fore200e_rate_ctrl(struct atm_qos* qos, struct tpd_rate* rate)
1381 {
1382 if (qos->txtp.max_pcr < ATM_OC3_PCR) {
1383
1384 /* compute the data cells to idle cells ratio from the tx PCR */
1385 rate->data_cells = qos->txtp.max_pcr * FORE200E_MAX_BACK2BACK_CELLS / ATM_OC3_PCR;
1386 rate->idle_cells = FORE200E_MAX_BACK2BACK_CELLS - rate->data_cells;
1387 }
1388 else {
1389 /* disable rate control */
1390 rate->data_cells = rate->idle_cells = 0;
1391 }
1392 }
1393
1394
1395 static int
1396 fore200e_open(struct atm_vcc *vcc)
1397 {
1398 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1399 struct fore200e_vcc* fore200e_vcc;
1400 struct fore200e_vc_map* vc_map;
1401 unsigned long flags;
1402 int vci = vcc->vci;
1403 short vpi = vcc->vpi;
1404
1405 ASSERT((vpi >= 0) && (vpi < 1<<FORE200E_VPI_BITS));
1406 ASSERT((vci >= 0) && (vci < 1<<FORE200E_VCI_BITS));
1407
1408 spin_lock_irqsave(&fore200e->q_lock, flags);
1409
1410 vc_map = FORE200E_VC_MAP(fore200e, vpi, vci);
1411 if (vc_map->vcc) {
1412
1413 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1414
1415 printk(FORE200E "VC %d.%d.%d already in use\n",
1416 fore200e->atm_dev->number, vpi, vci);
1417
1418 return -EINVAL;
1419 }
1420
1421 vc_map->vcc = vcc;
1422
1423 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1424
1425 fore200e_vcc = kzalloc(sizeof(struct fore200e_vcc), GFP_ATOMIC);
1426 if (fore200e_vcc == NULL) {
1427 vc_map->vcc = NULL;
1428 return -ENOMEM;
1429 }
1430
1431 DPRINTK(2, "opening %d.%d.%d:%d QoS = (tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
1432 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d)\n",
1433 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1434 fore200e_traffic_class[ vcc->qos.txtp.traffic_class ],
1435 vcc->qos.txtp.min_pcr, vcc->qos.txtp.max_pcr, vcc->qos.txtp.max_cdv, vcc->qos.txtp.max_sdu,
1436 fore200e_traffic_class[ vcc->qos.rxtp.traffic_class ],
1437 vcc->qos.rxtp.min_pcr, vcc->qos.rxtp.max_pcr, vcc->qos.rxtp.max_cdv, vcc->qos.rxtp.max_sdu);
1438
1439 /* pseudo-CBR bandwidth requested? */
1440 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1441
1442 mutex_lock(&fore200e->rate_mtx);
1443 if (fore200e->available_cell_rate < vcc->qos.txtp.max_pcr) {
1444 mutex_unlock(&fore200e->rate_mtx);
1445
1446 kfree(fore200e_vcc);
1447 vc_map->vcc = NULL;
1448 return -EAGAIN;
1449 }
1450
1451 /* reserve bandwidth */
1452 fore200e->available_cell_rate -= vcc->qos.txtp.max_pcr;
1453 mutex_unlock(&fore200e->rate_mtx);
1454 }
1455
1456 vcc->itf = vcc->dev->number;
1457
1458 set_bit(ATM_VF_PARTIAL,&vcc->flags);
1459 set_bit(ATM_VF_ADDR, &vcc->flags);
1460
1461 vcc->dev_data = fore200e_vcc;
1462
1463 if (fore200e_activate_vcin(fore200e, 1, vcc, vcc->qos.rxtp.max_sdu) < 0) {
1464
1465 vc_map->vcc = NULL;
1466
1467 clear_bit(ATM_VF_ADDR, &vcc->flags);
1468 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1469
1470 vcc->dev_data = NULL;
1471
1472 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1473
1474 kfree(fore200e_vcc);
1475 return -EINVAL;
1476 }
1477
1478 /* compute rate control parameters */
1479 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1480
1481 fore200e_rate_ctrl(&vcc->qos, &fore200e_vcc->rate);
1482 set_bit(ATM_VF_HASQOS, &vcc->flags);
1483
1484 DPRINTK(3, "tx on %d.%d.%d:%d, tx PCR = %d, rx PCR = %d, data_cells = %u, idle_cells = %u\n",
1485 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1486 vcc->qos.txtp.max_pcr, vcc->qos.rxtp.max_pcr,
1487 fore200e_vcc->rate.data_cells, fore200e_vcc->rate.idle_cells);
1488 }
1489
1490 fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1;
1491 fore200e_vcc->tx_max_pdu = fore200e_vcc->rx_max_pdu = 0;
1492 fore200e_vcc->tx_pdu = fore200e_vcc->rx_pdu = 0;
1493
1494 /* new incarnation of the vcc */
1495 vc_map->incarn = ++fore200e->incarn_count;
1496
1497 /* VC unusable before this flag is set */
1498 set_bit(ATM_VF_READY, &vcc->flags);
1499
1500 return 0;
1501 }
1502
1503
1504 static void
1505 fore200e_close(struct atm_vcc* vcc)
1506 {
1507 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1508 struct fore200e_vcc* fore200e_vcc;
1509 struct fore200e_vc_map* vc_map;
1510 unsigned long flags;
1511
1512 ASSERT(vcc);
1513 ASSERT((vcc->vpi >= 0) && (vcc->vpi < 1<<FORE200E_VPI_BITS));
1514 ASSERT((vcc->vci >= 0) && (vcc->vci < 1<<FORE200E_VCI_BITS));
1515
1516 DPRINTK(2, "closing %d.%d.%d:%d\n", vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal));
1517
1518 clear_bit(ATM_VF_READY, &vcc->flags);
1519
1520 fore200e_activate_vcin(fore200e, 0, vcc, 0);
1521
1522 spin_lock_irqsave(&fore200e->q_lock, flags);
1523
1524 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1525
1526 /* the vc is no longer considered as "in use" by fore200e_open() */
1527 vc_map->vcc = NULL;
1528
1529 vcc->itf = vcc->vci = vcc->vpi = 0;
1530
1531 fore200e_vcc = FORE200E_VCC(vcc);
1532 vcc->dev_data = NULL;
1533
1534 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1535
1536 /* release reserved bandwidth, if any */
1537 if ((vcc->qos.txtp.traffic_class == ATM_CBR) && (vcc->qos.txtp.max_pcr > 0)) {
1538
1539 mutex_lock(&fore200e->rate_mtx);
1540 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
1541 mutex_unlock(&fore200e->rate_mtx);
1542
1543 clear_bit(ATM_VF_HASQOS, &vcc->flags);
1544 }
1545
1546 clear_bit(ATM_VF_ADDR, &vcc->flags);
1547 clear_bit(ATM_VF_PARTIAL,&vcc->flags);
1548
1549 ASSERT(fore200e_vcc);
1550 kfree(fore200e_vcc);
1551 }
1552
1553
1554 static int
1555 fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
1556 {
1557 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1558 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
1559 struct fore200e_vc_map* vc_map;
1560 struct host_txq* txq = &fore200e->host_txq;
1561 struct host_txq_entry* entry;
1562 struct tpd* tpd;
1563 struct tpd_haddr tpd_haddr;
1564 int retry = CONFIG_ATM_FORE200E_TX_RETRY;
1565 int tx_copy = 0;
1566 int tx_len = skb->len;
1567 u32* cell_header = NULL;
1568 unsigned char* skb_data;
1569 int skb_len;
1570 unsigned char* data;
1571 unsigned long flags;
1572
1573 ASSERT(vcc);
1574 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
1575 ASSERT(fore200e);
1576 ASSERT(fore200e_vcc);
1577
1578 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
1579 DPRINTK(1, "VC %d.%d.%d not ready for tx\n", vcc->itf, vcc->vpi, vcc->vpi);
1580 dev_kfree_skb_any(skb);
1581 return -EINVAL;
1582 }
1583
1584 #ifdef FORE200E_52BYTE_AAL0_SDU
1585 if ((vcc->qos.aal == ATM_AAL0) && (vcc->qos.txtp.max_sdu == ATM_AAL0_SDU)) {
1586 cell_header = (u32*) skb->data;
1587 skb_data = skb->data + 4; /* skip 4-byte cell header */
1588 skb_len = tx_len = skb->len - 4;
1589
1590 DPRINTK(3, "user-supplied cell header = 0x%08x\n", *cell_header);
1591 }
1592 else
1593 #endif
1594 {
1595 skb_data = skb->data;
1596 skb_len = skb->len;
1597 }
1598
1599 if (((unsigned long)skb_data) & 0x3) {
1600
1601 DPRINTK(2, "misaligned tx PDU on device %s\n", fore200e->name);
1602 tx_copy = 1;
1603 tx_len = skb_len;
1604 }
1605
1606 if ((vcc->qos.aal == ATM_AAL0) && (skb_len % ATM_CELL_PAYLOAD)) {
1607
1608 /* this simply NUKES the PCA board */
1609 DPRINTK(2, "incomplete tx AAL0 PDU on device %s\n", fore200e->name);
1610 tx_copy = 1;
1611 tx_len = ((skb_len / ATM_CELL_PAYLOAD) + 1) * ATM_CELL_PAYLOAD;
1612 }
1613
1614 if (tx_copy) {
1615 data = kmalloc(tx_len, GFP_ATOMIC | GFP_DMA);
1616 if (data == NULL) {
1617 if (vcc->pop) {
1618 vcc->pop(vcc, skb);
1619 }
1620 else {
1621 dev_kfree_skb_any(skb);
1622 }
1623 return -ENOMEM;
1624 }
1625
1626 memcpy(data, skb_data, skb_len);
1627 if (skb_len < tx_len)
1628 memset(data + skb_len, 0x00, tx_len - skb_len);
1629 }
1630 else {
1631 data = skb_data;
1632 }
1633
1634 vc_map = FORE200E_VC_MAP(fore200e, vcc->vpi, vcc->vci);
1635 ASSERT(vc_map->vcc == vcc);
1636
1637 retry_here:
1638
1639 spin_lock_irqsave(&fore200e->q_lock, flags);
1640
1641 entry = &txq->host_entry[ txq->head ];
1642
1643 if ((*entry->status != STATUS_FREE) || (txq->txing >= QUEUE_SIZE_TX - 2)) {
1644
1645 /* try to free completed tx queue entries */
1646 fore200e_tx_irq(fore200e);
1647
1648 if (*entry->status != STATUS_FREE) {
1649
1650 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1651
1652 /* retry once again? */
1653 if (--retry > 0) {
1654 udelay(50);
1655 goto retry_here;
1656 }
1657
1658 atomic_inc(&vcc->stats->tx_err);
1659
1660 fore200e->tx_sat++;
1661 DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
1662 fore200e->name, fore200e->cp_queues->heartbeat);
1663 if (vcc->pop) {
1664 vcc->pop(vcc, skb);
1665 }
1666 else {
1667 dev_kfree_skb_any(skb);
1668 }
1669
1670 if (tx_copy)
1671 kfree(data);
1672
1673 return -ENOBUFS;
1674 }
1675 }
1676
1677 entry->incarn = vc_map->incarn;
1678 entry->vc_map = vc_map;
1679 entry->skb = skb;
1680 entry->data = tx_copy ? data : NULL;
1681
1682 tpd = entry->tpd;
1683 tpd->tsd[ 0 ].buffer = fore200e->bus->dma_map(fore200e, data, tx_len, DMA_TO_DEVICE);
1684 tpd->tsd[ 0 ].length = tx_len;
1685
1686 FORE200E_NEXT_ENTRY(txq->head, QUEUE_SIZE_TX);
1687 txq->txing++;
1688
1689 /* The dma_map call above implies a dma_sync so the device can use it,
1690 * thus no explicit dma_sync call is necessary here.
1691 */
1692
1693 DPRINTK(3, "tx on %d.%d.%d:%d, len = %u (%u)\n",
1694 vcc->itf, vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
1695 tpd->tsd[0].length, skb_len);
1696
1697 if (skb_len < fore200e_vcc->tx_min_pdu)
1698 fore200e_vcc->tx_min_pdu = skb_len;
1699 if (skb_len > fore200e_vcc->tx_max_pdu)
1700 fore200e_vcc->tx_max_pdu = skb_len;
1701 fore200e_vcc->tx_pdu++;
1702
1703 /* set tx rate control information */
1704 tpd->rate.data_cells = fore200e_vcc->rate.data_cells;
1705 tpd->rate.idle_cells = fore200e_vcc->rate.idle_cells;
1706
1707 if (cell_header) {
1708 tpd->atm_header.clp = (*cell_header & ATM_HDR_CLP);
1709 tpd->atm_header.plt = (*cell_header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
1710 tpd->atm_header.vci = (*cell_header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT;
1711 tpd->atm_header.vpi = (*cell_header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT;
1712 tpd->atm_header.gfc = (*cell_header & ATM_HDR_GFC_MASK) >> ATM_HDR_GFC_SHIFT;
1713 }
1714 else {
1715 /* set the ATM header, common to all cells conveying the PDU */
1716 tpd->atm_header.clp = 0;
1717 tpd->atm_header.plt = 0;
1718 tpd->atm_header.vci = vcc->vci;
1719 tpd->atm_header.vpi = vcc->vpi;
1720 tpd->atm_header.gfc = 0;
1721 }
1722
1723 tpd->spec.length = tx_len;
1724 tpd->spec.nseg = 1;
1725 tpd->spec.aal = fore200e_atm2fore_aal(vcc->qos.aal);
1726 tpd->spec.intr = 1;
1727
1728 tpd_haddr.size = sizeof(struct tpd) / (1<<TPD_HADDR_SHIFT); /* size is expressed in 32 byte blocks */
1729 tpd_haddr.pad = 0;
1730 tpd_haddr.haddr = entry->tpd_dma >> TPD_HADDR_SHIFT; /* shift the address, as we are in a bitfield */
1731
1732 *entry->status = STATUS_PENDING;
1733 fore200e->bus->write(*(u32*)&tpd_haddr, (u32 __iomem *)&entry->cp_entry->tpd_haddr);
1734
1735 spin_unlock_irqrestore(&fore200e->q_lock, flags);
1736
1737 return 0;
1738 }
1739
1740
1741 static int
1742 fore200e_getstats(struct fore200e* fore200e)
1743 {
1744 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1745 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1746 struct stats_opcode opcode;
1747 int ok;
1748 u32 stats_dma_addr;
1749
1750 if (fore200e->stats == NULL) {
1751 fore200e->stats = kzalloc(sizeof(struct stats), GFP_KERNEL | GFP_DMA);
1752 if (fore200e->stats == NULL)
1753 return -ENOMEM;
1754 }
1755
1756 stats_dma_addr = fore200e->bus->dma_map(fore200e, fore200e->stats,
1757 sizeof(struct stats), DMA_FROM_DEVICE);
1758
1759 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1760
1761 opcode.opcode = OPCODE_GET_STATS;
1762 opcode.pad = 0;
1763
1764 fore200e->bus->write(stats_dma_addr, &entry->cp_entry->cmd.stats_block.stats_haddr);
1765
1766 *entry->status = STATUS_PENDING;
1767
1768 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.stats_block.opcode);
1769
1770 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1771
1772 *entry->status = STATUS_FREE;
1773
1774 fore200e->bus->dma_unmap(fore200e, stats_dma_addr, sizeof(struct stats), DMA_FROM_DEVICE);
1775
1776 if (ok == 0) {
1777 printk(FORE200E "unable to get statistics from device %s\n", fore200e->name);
1778 return -EIO;
1779 }
1780
1781 return 0;
1782 }
1783
1784
1785 static int
1786 fore200e_getsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1787 {
1788 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1789
1790 DPRINTK(2, "getsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1791 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1792
1793 return -EINVAL;
1794 }
1795
1796
1797 static int
1798 fore200e_setsockopt(struct atm_vcc* vcc, int level, int optname, void __user *optval, int optlen)
1799 {
1800 /* struct fore200e* fore200e = FORE200E_DEV(vcc->dev); */
1801
1802 DPRINTK(2, "setsockopt %d.%d.%d, level = %d, optname = 0x%x, optval = 0x%p, optlen = %d\n",
1803 vcc->itf, vcc->vpi, vcc->vci, level, optname, optval, optlen);
1804
1805 return -EINVAL;
1806 }
1807
1808
1809 #if 0 /* currently unused */
1810 static int
1811 fore200e_get_oc3(struct fore200e* fore200e, struct oc3_regs* regs)
1812 {
1813 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1814 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1815 struct oc3_opcode opcode;
1816 int ok;
1817 u32 oc3_regs_dma_addr;
1818
1819 oc3_regs_dma_addr = fore200e->bus->dma_map(fore200e, regs, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1820
1821 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1822
1823 opcode.opcode = OPCODE_GET_OC3;
1824 opcode.reg = 0;
1825 opcode.value = 0;
1826 opcode.mask = 0;
1827
1828 fore200e->bus->write(oc3_regs_dma_addr, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1829
1830 *entry->status = STATUS_PENDING;
1831
1832 fore200e->bus->write(*(u32*)&opcode, (u32*)&entry->cp_entry->cmd.oc3_block.opcode);
1833
1834 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1835
1836 *entry->status = STATUS_FREE;
1837
1838 fore200e->bus->dma_unmap(fore200e, oc3_regs_dma_addr, sizeof(struct oc3_regs), DMA_FROM_DEVICE);
1839
1840 if (ok == 0) {
1841 printk(FORE200E "unable to get OC-3 regs of device %s\n", fore200e->name);
1842 return -EIO;
1843 }
1844
1845 return 0;
1846 }
1847 #endif
1848
1849
1850 static int
1851 fore200e_set_oc3(struct fore200e* fore200e, u32 reg, u32 value, u32 mask)
1852 {
1853 struct host_cmdq* cmdq = &fore200e->host_cmdq;
1854 struct host_cmdq_entry* entry = &cmdq->host_entry[ cmdq->head ];
1855 struct oc3_opcode opcode;
1856 int ok;
1857
1858 DPRINTK(2, "set OC-3 reg = 0x%02x, value = 0x%02x, mask = 0x%02x\n", reg, value, mask);
1859
1860 FORE200E_NEXT_ENTRY(cmdq->head, QUEUE_SIZE_CMD);
1861
1862 opcode.opcode = OPCODE_SET_OC3;
1863 opcode.reg = reg;
1864 opcode.value = value;
1865 opcode.mask = mask;
1866
1867 fore200e->bus->write(0, &entry->cp_entry->cmd.oc3_block.regs_haddr);
1868
1869 *entry->status = STATUS_PENDING;
1870
1871 fore200e->bus->write(*(u32*)&opcode, (u32 __iomem *)&entry->cp_entry->cmd.oc3_block.opcode);
1872
1873 ok = fore200e_poll(fore200e, entry->status, STATUS_COMPLETE, 400);
1874
1875 *entry->status = STATUS_FREE;
1876
1877 if (ok == 0) {
1878 printk(FORE200E "unable to set OC-3 reg 0x%02x of device %s\n", reg, fore200e->name);
1879 return -EIO;
1880 }
1881
1882 return 0;
1883 }
1884
1885
1886 static int
1887 fore200e_setloop(struct fore200e* fore200e, int loop_mode)
1888 {
1889 u32 mct_value, mct_mask;
1890 int error;
1891
1892 if (!capable(CAP_NET_ADMIN))
1893 return -EPERM;
1894
1895 switch (loop_mode) {
1896
1897 case ATM_LM_NONE:
1898 mct_value = 0;
1899 mct_mask = SUNI_MCT_DLE | SUNI_MCT_LLE;
1900 break;
1901
1902 case ATM_LM_LOC_PHY:
1903 mct_value = mct_mask = SUNI_MCT_DLE;
1904 break;
1905
1906 case ATM_LM_RMT_PHY:
1907 mct_value = mct_mask = SUNI_MCT_LLE;
1908 break;
1909
1910 default:
1911 return -EINVAL;
1912 }
1913
1914 error = fore200e_set_oc3(fore200e, SUNI_MCT, mct_value, mct_mask);
1915 if (error == 0)
1916 fore200e->loop_mode = loop_mode;
1917
1918 return error;
1919 }
1920
1921
1922 static int
1923 fore200e_fetch_stats(struct fore200e* fore200e, struct sonet_stats __user *arg)
1924 {
1925 struct sonet_stats tmp;
1926
1927 if (fore200e_getstats(fore200e) < 0)
1928 return -EIO;
1929
1930 tmp.section_bip = be32_to_cpu(fore200e->stats->oc3.section_bip8_errors);
1931 tmp.line_bip = be32_to_cpu(fore200e->stats->oc3.line_bip24_errors);
1932 tmp.path_bip = be32_to_cpu(fore200e->stats->oc3.path_bip8_errors);
1933 tmp.line_febe = be32_to_cpu(fore200e->stats->oc3.line_febe_errors);
1934 tmp.path_febe = be32_to_cpu(fore200e->stats->oc3.path_febe_errors);
1935 tmp.corr_hcs = be32_to_cpu(fore200e->stats->oc3.corr_hcs_errors);
1936 tmp.uncorr_hcs = be32_to_cpu(fore200e->stats->oc3.ucorr_hcs_errors);
1937 tmp.tx_cells = be32_to_cpu(fore200e->stats->aal0.cells_transmitted) +
1938 be32_to_cpu(fore200e->stats->aal34.cells_transmitted) +
1939 be32_to_cpu(fore200e->stats->aal5.cells_transmitted);
1940 tmp.rx_cells = be32_to_cpu(fore200e->stats->aal0.cells_received) +
1941 be32_to_cpu(fore200e->stats->aal34.cells_received) +
1942 be32_to_cpu(fore200e->stats->aal5.cells_received);
1943
1944 if (arg)
1945 return copy_to_user(arg, &tmp, sizeof(struct sonet_stats)) ? -EFAULT : 0;
1946
1947 return 0;
1948 }
1949
1950
1951 static int
1952 fore200e_ioctl(struct atm_dev* dev, unsigned int cmd, void __user * arg)
1953 {
1954 struct fore200e* fore200e = FORE200E_DEV(dev);
1955
1956 DPRINTK(2, "ioctl cmd = 0x%x (%u), arg = 0x%p (%lu)\n", cmd, cmd, arg, (unsigned long)arg);
1957
1958 switch (cmd) {
1959
1960 case SONET_GETSTAT:
1961 return fore200e_fetch_stats(fore200e, (struct sonet_stats __user *)arg);
1962
1963 case SONET_GETDIAG:
1964 return put_user(0, (int __user *)arg) ? -EFAULT : 0;
1965
1966 case ATM_SETLOOP:
1967 return fore200e_setloop(fore200e, (int)(unsigned long)arg);
1968
1969 case ATM_GETLOOP:
1970 return put_user(fore200e->loop_mode, (int __user *)arg) ? -EFAULT : 0;
1971
1972 case ATM_QUERYLOOP:
1973 return put_user(ATM_LM_LOC_PHY | ATM_LM_RMT_PHY, (int __user *)arg) ? -EFAULT : 0;
1974 }
1975
1976 return -ENOSYS; /* not implemented */
1977 }
1978
1979
1980 static int
1981 fore200e_change_qos(struct atm_vcc* vcc,struct atm_qos* qos, int flags)
1982 {
1983 struct fore200e_vcc* fore200e_vcc = FORE200E_VCC(vcc);
1984 struct fore200e* fore200e = FORE200E_DEV(vcc->dev);
1985
1986 if (!test_bit(ATM_VF_READY, &vcc->flags)) {
1987 DPRINTK(1, "VC %d.%d.%d not ready for QoS change\n", vcc->itf, vcc->vpi, vcc->vpi);
1988 return -EINVAL;
1989 }
1990
1991 DPRINTK(2, "change_qos %d.%d.%d, "
1992 "(tx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d; "
1993 "rx: cl=%s, pcr=%d-%d, cdv=%d, max_sdu=%d), flags = 0x%x\n"
1994 "available_cell_rate = %u",
1995 vcc->itf, vcc->vpi, vcc->vci,
1996 fore200e_traffic_class[ qos->txtp.traffic_class ],
1997 qos->txtp.min_pcr, qos->txtp.max_pcr, qos->txtp.max_cdv, qos->txtp.max_sdu,
1998 fore200e_traffic_class[ qos->rxtp.traffic_class ],
1999 qos->rxtp.min_pcr, qos->rxtp.max_pcr, qos->rxtp.max_cdv, qos->rxtp.max_sdu,
2000 flags, fore200e->available_cell_rate);
2001
2002 if ((qos->txtp.traffic_class == ATM_CBR) && (qos->txtp.max_pcr > 0)) {
2003
2004 mutex_lock(&fore200e->rate_mtx);
2005 if (fore200e->available_cell_rate + vcc->qos.txtp.max_pcr < qos->txtp.max_pcr) {
2006 mutex_unlock(&fore200e->rate_mtx);
2007 return -EAGAIN;
2008 }
2009
2010 fore200e->available_cell_rate += vcc->qos.txtp.max_pcr;
2011 fore200e->available_cell_rate -= qos->txtp.max_pcr;
2012
2013 mutex_unlock(&fore200e->rate_mtx);
2014
2015 memcpy(&vcc->qos, qos, sizeof(struct atm_qos));
2016
2017 /* update rate control parameters */
2018 fore200e_rate_ctrl(qos, &fore200e_vcc->rate);
2019
2020 set_bit(ATM_VF_HASQOS, &vcc->flags);
2021
2022 return 0;
2023 }
2024
2025 return -EINVAL;
2026 }
2027
2028
2029 static int __devinit
2030 fore200e_irq_request(struct fore200e* fore200e)
2031 {
2032 if (request_irq(fore200e->irq, fore200e_interrupt, IRQF_SHARED, fore200e->name, fore200e->atm_dev) < 0) {
2033
2034 printk(FORE200E "unable to reserve IRQ %s for device %s\n",
2035 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2036 return -EBUSY;
2037 }
2038
2039 printk(FORE200E "IRQ %s reserved for device %s\n",
2040 fore200e_irq_itoa(fore200e->irq), fore200e->name);
2041
2042 #ifdef FORE200E_USE_TASKLET
2043 tasklet_init(&fore200e->tx_tasklet, fore200e_tx_tasklet, (unsigned long)fore200e);
2044 tasklet_init(&fore200e->rx_tasklet, fore200e_rx_tasklet, (unsigned long)fore200e);
2045 #endif
2046
2047 fore200e->state = FORE200E_STATE_IRQ;
2048 return 0;
2049 }
2050
2051
2052 static int __devinit
2053 fore200e_get_esi(struct fore200e* fore200e)
2054 {
2055 struct prom_data* prom = kzalloc(sizeof(struct prom_data), GFP_KERNEL | GFP_DMA);
2056 int ok, i;
2057
2058 if (!prom)
2059 return -ENOMEM;
2060
2061 ok = fore200e->bus->prom_read(fore200e, prom);
2062 if (ok < 0) {
2063 kfree(prom);
2064 return -EBUSY;
2065 }
2066
2067 printk(FORE200E "device %s, rev. %c, S/N: %d, ESI: %02x:%02x:%02x:%02x:%02x:%02x\n",
2068 fore200e->name,
2069 (prom->hw_revision & 0xFF) + '@', /* probably meaningless with SBA boards */
2070 prom->serial_number & 0xFFFF,
2071 prom->mac_addr[ 2 ], prom->mac_addr[ 3 ], prom->mac_addr[ 4 ],
2072 prom->mac_addr[ 5 ], prom->mac_addr[ 6 ], prom->mac_addr[ 7 ]);
2073
2074 for (i = 0; i < ESI_LEN; i++) {
2075 fore200e->esi[ i ] = fore200e->atm_dev->esi[ i ] = prom->mac_addr[ i + 2 ];
2076 }
2077
2078 kfree(prom);
2079
2080 return 0;
2081 }
2082
2083
2084 static int __devinit
2085 fore200e_alloc_rx_buf(struct fore200e* fore200e)
2086 {
2087 int scheme, magn, nbr, size, i;
2088
2089 struct host_bsq* bsq;
2090 struct buffer* buffer;
2091
2092 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2093 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2094
2095 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2096
2097 nbr = fore200e_rx_buf_nbr[ scheme ][ magn ];
2098 size = fore200e_rx_buf_size[ scheme ][ magn ];
2099
2100 DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn);
2101
2102 /* allocate the array of receive buffers */
2103 buffer = bsq->buffer = kzalloc(nbr * sizeof(struct buffer), GFP_KERNEL);
2104
2105 if (buffer == NULL)
2106 return -ENOMEM;
2107
2108 bsq->freebuf = NULL;
2109
2110 for (i = 0; i < nbr; i++) {
2111
2112 buffer[ i ].scheme = scheme;
2113 buffer[ i ].magn = magn;
2114 #ifdef FORE200E_BSQ_DEBUG
2115 buffer[ i ].index = i;
2116 buffer[ i ].supplied = 0;
2117 #endif
2118
2119 /* allocate the receive buffer body */
2120 if (fore200e_chunk_alloc(fore200e,
2121 &buffer[ i ].data, size, fore200e->bus->buffer_alignment,
2122 DMA_FROM_DEVICE) < 0) {
2123
2124 while (i > 0)
2125 fore200e_chunk_free(fore200e, &buffer[ --i ].data);
2126 kfree(buffer);
2127
2128 return -ENOMEM;
2129 }
2130
2131 /* insert the buffer into the free buffer list */
2132 buffer[ i ].next = bsq->freebuf;
2133 bsq->freebuf = &buffer[ i ];
2134 }
2135 /* all the buffers are free, initially */
2136 bsq->freebuf_count = nbr;
2137
2138 #ifdef FORE200E_BSQ_DEBUG
2139 bsq_audit(3, bsq, scheme, magn);
2140 #endif
2141 }
2142 }
2143
2144 fore200e->state = FORE200E_STATE_ALLOC_BUF;
2145 return 0;
2146 }
2147
2148
2149 static int __devinit
2150 fore200e_init_bs_queue(struct fore200e* fore200e)
2151 {
2152 int scheme, magn, i;
2153
2154 struct host_bsq* bsq;
2155 struct cp_bsq_entry __iomem * cp_entry;
2156
2157 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++) {
2158 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++) {
2159
2160 DPRINTK(2, "buffer supply queue %d / %d is being initialized\n", scheme, magn);
2161
2162 bsq = &fore200e->host_bsq[ scheme ][ magn ];
2163
2164 /* allocate and align the array of status words */
2165 if (fore200e->bus->dma_chunk_alloc(fore200e,
2166 &bsq->status,
2167 sizeof(enum status),
2168 QUEUE_SIZE_BS,
2169 fore200e->bus->status_alignment) < 0) {
2170 return -ENOMEM;
2171 }
2172
2173 /* allocate and align the array of receive buffer descriptors */
2174 if (fore200e->bus->dma_chunk_alloc(fore200e,
2175 &bsq->rbd_block,
2176 sizeof(struct rbd_block),
2177 QUEUE_SIZE_BS,
2178 fore200e->bus->descr_alignment) < 0) {
2179
2180 fore200e->bus->dma_chunk_free(fore200e, &bsq->status);
2181 return -ENOMEM;
2182 }
2183
2184 /* get the base address of the cp resident buffer supply queue entries */
2185 cp_entry = fore200e->virt_base +
2186 fore200e->bus->read(&fore200e->cp_queues->cp_bsq[ scheme ][ magn ]);
2187
2188 /* fill the host resident and cp resident buffer supply queue entries */
2189 for (i = 0; i < QUEUE_SIZE_BS; i++) {
2190
2191 bsq->host_entry[ i ].status =
2192 FORE200E_INDEX(bsq->status.align_addr, enum status, i);
2193 bsq->host_entry[ i ].rbd_block =
2194 FORE200E_INDEX(bsq->rbd_block.align_addr, struct rbd_block, i);
2195 bsq->host_entry[ i ].rbd_block_dma =
2196 FORE200E_DMA_INDEX(bsq->rbd_block.dma_addr, struct rbd_block, i);
2197 bsq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2198
2199 *bsq->host_entry[ i ].status = STATUS_FREE;
2200
2201 fore200e->bus->write(FORE200E_DMA_INDEX(bsq->status.dma_addr, enum status, i),
2202 &cp_entry[ i ].status_haddr);
2203 }
2204 }
2205 }
2206
2207 fore200e->state = FORE200E_STATE_INIT_BSQ;
2208 return 0;
2209 }
2210
2211
2212 static int __devinit
2213 fore200e_init_rx_queue(struct fore200e* fore200e)
2214 {
2215 struct host_rxq* rxq = &fore200e->host_rxq;
2216 struct cp_rxq_entry __iomem * cp_entry;
2217 int i;
2218
2219 DPRINTK(2, "receive queue is being initialized\n");
2220
2221 /* allocate and align the array of status words */
2222 if (fore200e->bus->dma_chunk_alloc(fore200e,
2223 &rxq->status,
2224 sizeof(enum status),
2225 QUEUE_SIZE_RX,
2226 fore200e->bus->status_alignment) < 0) {
2227 return -ENOMEM;
2228 }
2229
2230 /* allocate and align the array of receive PDU descriptors */
2231 if (fore200e->bus->dma_chunk_alloc(fore200e,
2232 &rxq->rpd,
2233 sizeof(struct rpd),
2234 QUEUE_SIZE_RX,
2235 fore200e->bus->descr_alignment) < 0) {
2236
2237 fore200e->bus->dma_chunk_free(fore200e, &rxq->status);
2238 return -ENOMEM;
2239 }
2240
2241 /* get the base address of the cp resident rx queue entries */
2242 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_rxq);
2243
2244 /* fill the host resident and cp resident rx entries */
2245 for (i=0; i < QUEUE_SIZE_RX; i++) {
2246
2247 rxq->host_entry[ i ].status =
2248 FORE200E_INDEX(rxq->status.align_addr, enum status, i);
2249 rxq->host_entry[ i ].rpd =
2250 FORE200E_INDEX(rxq->rpd.align_addr, struct rpd, i);
2251 rxq->host_entry[ i ].rpd_dma =
2252 FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i);
2253 rxq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2254
2255 *rxq->host_entry[ i ].status = STATUS_FREE;
2256
2257 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->status.dma_addr, enum status, i),
2258 &cp_entry[ i ].status_haddr);
2259
2260 fore200e->bus->write(FORE200E_DMA_INDEX(rxq->rpd.dma_addr, struct rpd, i),
2261 &cp_entry[ i ].rpd_haddr);
2262 }
2263
2264 /* set the head entry of the queue */
2265 rxq->head = 0;
2266
2267 fore200e->state = FORE200E_STATE_INIT_RXQ;
2268 return 0;
2269 }
2270
2271
2272 static int __devinit
2273 fore200e_init_tx_queue(struct fore200e* fore200e)
2274 {
2275 struct host_txq* txq = &fore200e->host_txq;
2276 struct cp_txq_entry __iomem * cp_entry;
2277 int i;
2278
2279 DPRINTK(2, "transmit queue is being initialized\n");
2280
2281 /* allocate and align the array of status words */
2282 if (fore200e->bus->dma_chunk_alloc(fore200e,
2283 &txq->status,
2284 sizeof(enum status),
2285 QUEUE_SIZE_TX,
2286 fore200e->bus->status_alignment) < 0) {
2287 return -ENOMEM;
2288 }
2289
2290 /* allocate and align the array of transmit PDU descriptors */
2291 if (fore200e->bus->dma_chunk_alloc(fore200e,
2292 &txq->tpd,
2293 sizeof(struct tpd),
2294 QUEUE_SIZE_TX,
2295 fore200e->bus->descr_alignment) < 0) {
2296
2297 fore200e->bus->dma_chunk_free(fore200e, &txq->status);
2298 return -ENOMEM;
2299 }
2300
2301 /* get the base address of the cp resident tx queue entries */
2302 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_txq);
2303
2304 /* fill the host resident and cp resident tx entries */
2305 for (i=0; i < QUEUE_SIZE_TX; i++) {
2306
2307 txq->host_entry[ i ].status =
2308 FORE200E_INDEX(txq->status.align_addr, enum status, i);
2309 txq->host_entry[ i ].tpd =
2310 FORE200E_INDEX(txq->tpd.align_addr, struct tpd, i);
2311 txq->host_entry[ i ].tpd_dma =
2312 FORE200E_DMA_INDEX(txq->tpd.dma_addr, struct tpd, i);
2313 txq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2314
2315 *txq->host_entry[ i ].status = STATUS_FREE;
2316
2317 fore200e->bus->write(FORE200E_DMA_INDEX(txq->status.dma_addr, enum status, i),
2318 &cp_entry[ i ].status_haddr);
2319
2320 /* although there is a one-to-one mapping of tx queue entries and tpds,
2321 we do not write here the DMA (physical) base address of each tpd into
2322 the related cp resident entry, because the cp relies on this write
2323 operation to detect that a new pdu has been submitted for tx */
2324 }
2325
2326 /* set the head and tail entries of the queue */
2327 txq->head = 0;
2328 txq->tail = 0;
2329
2330 fore200e->state = FORE200E_STATE_INIT_TXQ;
2331 return 0;
2332 }
2333
2334
2335 static int __devinit
2336 fore200e_init_cmd_queue(struct fore200e* fore200e)
2337 {
2338 struct host_cmdq* cmdq = &fore200e->host_cmdq;
2339 struct cp_cmdq_entry __iomem * cp_entry;
2340 int i;
2341
2342 DPRINTK(2, "command queue is being initialized\n");
2343
2344 /* allocate and align the array of status words */
2345 if (fore200e->bus->dma_chunk_alloc(fore200e,
2346 &cmdq->status,
2347 sizeof(enum status),
2348 QUEUE_SIZE_CMD,
2349 fore200e->bus->status_alignment) < 0) {
2350 return -ENOMEM;
2351 }
2352
2353 /* get the base address of the cp resident cmd queue entries */
2354 cp_entry = fore200e->virt_base + fore200e->bus->read(&fore200e->cp_queues->cp_cmdq);
2355
2356 /* fill the host resident and cp resident cmd entries */
2357 for (i=0; i < QUEUE_SIZE_CMD; i++) {
2358
2359 cmdq->host_entry[ i ].status =
2360 FORE200E_INDEX(cmdq->status.align_addr, enum status, i);
2361 cmdq->host_entry[ i ].cp_entry = &cp_entry[ i ];
2362
2363 *cmdq->host_entry[ i ].status = STATUS_FREE;
2364
2365 fore200e->bus->write(FORE200E_DMA_INDEX(cmdq->status.dma_addr, enum status, i),
2366 &cp_entry[ i ].status_haddr);
2367 }
2368
2369 /* set the head entry of the queue */
2370 cmdq->head = 0;
2371
2372 fore200e->state = FORE200E_STATE_INIT_CMDQ;
2373 return 0;
2374 }
2375
2376
2377 static void __devinit
2378 fore200e_param_bs_queue(struct fore200e* fore200e,
2379 enum buffer_scheme scheme, enum buffer_magn magn,
2380 int queue_length, int pool_size, int supply_blksize)
2381 {
2382 struct bs_spec __iomem * bs_spec = &fore200e->cp_queues->init.bs_spec[ scheme ][ magn ];
2383
2384 fore200e->bus->write(queue_length, &bs_spec->queue_length);
2385 fore200e->bus->write(fore200e_rx_buf_size[ scheme ][ magn ], &bs_spec->buffer_size);
2386 fore200e->bus->write(pool_size, &bs_spec->pool_size);
2387 fore200e->bus->write(supply_blksize, &bs_spec->supply_blksize);
2388 }
2389
2390
2391 static int __devinit
2392 fore200e_initialize(struct fore200e* fore200e)
2393 {
2394 struct cp_queues __iomem * cpq;
2395 int ok, scheme, magn;
2396
2397 DPRINTK(2, "device %s being initialized\n", fore200e->name);
2398
2399 mutex_init(&fore200e->rate_mtx);
2400 spin_lock_init(&fore200e->q_lock);
2401
2402 cpq = fore200e->cp_queues = fore200e->virt_base + FORE200E_CP_QUEUES_OFFSET;
2403
2404 /* enable cp to host interrupts */
2405 fore200e->bus->write(1, &cpq->imask);
2406
2407 if (fore200e->bus->irq_enable)
2408 fore200e->bus->irq_enable(fore200e);
2409
2410 fore200e->bus->write(NBR_CONNECT, &cpq->init.num_connect);
2411
2412 fore200e->bus->write(QUEUE_SIZE_CMD, &cpq->init.cmd_queue_len);
2413 fore200e->bus->write(QUEUE_SIZE_RX, &cpq->init.rx_queue_len);
2414 fore200e->bus->write(QUEUE_SIZE_TX, &cpq->init.tx_queue_len);
2415
2416 fore200e->bus->write(RSD_EXTENSION, &cpq->init.rsd_extension);
2417 fore200e->bus->write(TSD_EXTENSION, &cpq->init.tsd_extension);
2418
2419 for (scheme = 0; scheme < BUFFER_SCHEME_NBR; scheme++)
2420 for (magn = 0; magn < BUFFER_MAGN_NBR; magn++)
2421 fore200e_param_bs_queue(fore200e, scheme, magn,
2422 QUEUE_SIZE_BS,
2423 fore200e_rx_buf_nbr[ scheme ][ magn ],
2424 RBD_BLK_SIZE);
2425
2426 /* issue the initialize command */
2427 fore200e->bus->write(STATUS_PENDING, &cpq->init.status);
2428 fore200e->bus->write(OPCODE_INITIALIZE, &cpq->init.opcode);
2429
2430 ok = fore200e_io_poll(fore200e, &cpq->init.status, STATUS_COMPLETE, 3000);
2431 if (ok == 0) {
2432 printk(FORE200E "device %s initialization failed\n", fore200e->name);
2433 return -ENODEV;
2434 }
2435
2436 printk(FORE200E "device %s initialized\n", fore200e->name);
2437
2438 fore200e->state = FORE200E_STATE_INITIALIZE;
2439 return 0;
2440 }
2441
2442
2443 static void __devinit
2444 fore200e_monitor_putc(struct fore200e* fore200e, char c)
2445 {
2446 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2447
2448 #if 0
2449 printk("%c", c);
2450 #endif
2451 fore200e->bus->write(((u32) c) | FORE200E_CP_MONITOR_UART_AVAIL, &monitor->soft_uart.send);
2452 }
2453
2454
2455 static int __devinit
2456 fore200e_monitor_getc(struct fore200e* fore200e)
2457 {
2458 struct cp_monitor __iomem * monitor = fore200e->cp_monitor;
2459 unsigned long timeout = jiffies + msecs_to_jiffies(50);
2460 int c;
2461
2462 while (time_before(jiffies, timeout)) {
2463
2464 c = (int) fore200e->bus->read(&monitor->soft_uart.recv);
2465
2466 if (c & FORE200E_CP_MONITOR_UART_AVAIL) {
2467
2468 fore200e->bus->write(FORE200E_CP_MONITOR_UART_FREE, &monitor->soft_uart.recv);
2469 #if 0
2470 printk("%c", c & 0xFF);
2471 #endif
2472 return c & 0xFF;
2473 }
2474 }
2475
2476 return -1;
2477 }
2478
2479
2480 static void __devinit
2481 fore200e_monitor_puts(struct fore200e* fore200e, char* str)
2482 {
2483 while (*str) {
2484
2485 /* the i960 monitor doesn't accept any new character if it has something to say */
2486 while (fore200e_monitor_getc(fore200e) >= 0);
2487
2488 fore200e_monitor_putc(fore200e, *str++);
2489 }
2490
2491 while (fore200e_monitor_getc(fore200e) >= 0);
2492 }
2493
2494 #ifdef __LITTLE_ENDIAN
2495 #define FW_EXT ".bin"
2496 #else
2497 #define FW_EXT "_ecd.bin2"
2498 #endif
2499
2500 static int __devinit
2501 fore200e_load_and_start_fw(struct fore200e* fore200e)
2502 {
2503 const struct firmware *firmware;
2504 struct device *device;
2505 struct fw_header *fw_header;
2506 const __le32 *fw_data;
2507 u32 fw_size;
2508 u32 __iomem *load_addr;
2509 char buf[48];
2510 int err = -ENODEV;
2511
2512 if (strcmp(fore200e->bus->model_name, "PCA-200E") == 0)
2513 device = &((struct pci_dev *) fore200e->bus_dev)->dev;
2514 #ifdef CONFIG_SBUS
2515 else if (strcmp(fore200e->bus->model_name, "SBA-200E") == 0)
2516 device = &((struct of_device *) fore200e->bus_dev)->dev;
2517 #endif
2518 else
2519 return err;
2520
2521 sprintf(buf, "%s%s", fore200e->bus->proc_name, FW_EXT);
2522 if ((err = request_firmware(&firmware, buf, device)) < 0) {
2523 printk(FORE200E "problem loading firmware image %s\n", fore200e->bus->model_name);
2524 return err;
2525 }
2526
2527 fw_data = (__le32 *) firmware->data;
2528 fw_size = firmware->size / sizeof(u32);
2529 fw_header = (struct fw_header *) firmware->data;
2530 load_addr = fore200e->virt_base + le32_to_cpu(fw_header->load_offset);
2531
2532 DPRINTK(2, "device %s firmware being loaded at 0x%p (%d words)\n",
2533 fore200e->name, load_addr, fw_size);
2534
2535 if (le32_to_cpu(fw_header->magic) != FW_HEADER_MAGIC) {
2536 printk(FORE200E "corrupted %s firmware image\n", fore200e->bus->model_name);
2537 goto release;
2538 }
2539
2540 for (; fw_size--; fw_data++, load_addr++)
2541 fore200e->bus->write(le32_to_cpu(*fw_data), load_addr);
2542
2543 DPRINTK(2, "device %s firmware being started\n", fore200e->name);
2544
2545 #if defined(__sparc_v9__)
2546 /* reported to be required by SBA cards on some sparc64 hosts */
2547 fore200e_spin(100);
2548 #endif
2549
2550 sprintf(buf, "\rgo %x\r", le32_to_cpu(fw_header->start_offset));
2551 fore200e_monitor_puts(fore200e, buf);
2552
2553 if (fore200e_io_poll(fore200e, &fore200e->cp_monitor->bstat, BSTAT_CP_RUNNING, 1000) == 0) {
2554 printk(FORE200E "device %s firmware didn't start\n", fore200e->name);
2555 goto release;
2556 }
2557
2558 printk(FORE200E "device %s firmware started\n", fore200e->name);
2559
2560 fore200e->state = FORE200E_STATE_START_FW;
2561 err = 0;
2562
2563 release:
2564 release_firmware(firmware);
2565 return err;
2566 }
2567
2568
2569 static int __devinit
2570 fore200e_register(struct fore200e* fore200e)
2571 {
2572 struct atm_dev* atm_dev;
2573
2574 DPRINTK(2, "device %s being registered\n", fore200e->name);
2575
2576 atm_dev = atm_dev_register(fore200e->bus->proc_name, &fore200e_ops, -1,
2577 NULL);
2578 if (atm_dev == NULL) {
2579 printk(FORE200E "unable to register device %s\n", fore200e->name);
2580 return -ENODEV;
2581 }
2582
2583 atm_dev->dev_data = fore200e;
2584 fore200e->atm_dev = atm_dev;
2585
2586 atm_dev->ci_range.vpi_bits = FORE200E_VPI_BITS;
2587 atm_dev->ci_range.vci_bits = FORE200E_VCI_BITS;
2588
2589 fore200e->available_cell_rate = ATM_OC3_PCR;
2590
2591 fore200e->state = FORE200E_STATE_REGISTER;
2592 return 0;
2593 }
2594
2595
2596 static int __devinit
2597 fore200e_init(struct fore200e* fore200e)
2598 {
2599 if (fore200e_register(fore200e) < 0)
2600 return -ENODEV;
2601
2602 if (fore200e->bus->configure(fore200e) < 0)
2603 return -ENODEV;
2604
2605 if (fore200e->bus->map(fore200e) < 0)
2606 return -ENODEV;
2607
2608 if (fore200e_reset(fore200e, 1) < 0)
2609 return -ENODEV;
2610
2611 if (fore200e_load_and_start_fw(fore200e) < 0)
2612 return -ENODEV;
2613
2614 if (fore200e_initialize(fore200e) < 0)
2615 return -ENODEV;
2616
2617 if (fore200e_init_cmd_queue(fore200e) < 0)
2618 return -ENOMEM;
2619
2620 if (fore200e_init_tx_queue(fore200e) < 0)
2621 return -ENOMEM;
2622
2623 if (fore200e_init_rx_queue(fore200e) < 0)
2624 return -ENOMEM;
2625
2626 if (fore200e_init_bs_queue(fore200e) < 0)
2627 return -ENOMEM;
2628
2629 if (fore200e_alloc_rx_buf(fore200e) < 0)
2630 return -ENOMEM;
2631
2632 if (fore200e_get_esi(fore200e) < 0)
2633 return -EIO;
2634
2635 if (fore200e_irq_request(fore200e) < 0)
2636 return -EBUSY;
2637
2638 fore200e_supply(fore200e);
2639
2640 /* all done, board initialization is now complete */
2641 fore200e->state = FORE200E_STATE_COMPLETE;
2642 return 0;
2643 }
2644
2645 #ifdef CONFIG_SBUS
2646 static int __devinit fore200e_sba_probe(struct of_device *op,
2647 const struct of_device_id *match)
2648 {
2649 const struct fore200e_bus *bus = match->data;
2650 struct fore200e *fore200e;
2651 static int index = 0;
2652 int err;
2653
2654 fore200e = kzalloc(sizeof(struct fore200e), GFP_KERNEL);
2655 if (!fore200e)
2656 return -ENOMEM;
2657
2658 fore200e->bus = bus;
2659 fore200e->bus_dev = op;
2660 fore200e->irq = op->irqs[0];
2661 fore200e->phys_base = op->resource[0].start;
2662
2663 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2664
2665 err = fore200e_init(fore200e);
2666 if (err < 0) {
2667 fore200e_shutdown(fore200e);
2668 kfree(fore200e);
2669 return err;
2670 }
2671
2672 index++;
2673 dev_set_drvdata(&op->dev, fore200e);
2674
2675 return 0;
2676 }
2677
2678 static int __devexit fore200e_sba_remove(struct of_device *op)
2679 {
2680 struct fore200e *fore200e = dev_get_drvdata(&op->dev);
2681
2682 fore200e_shutdown(fore200e);
2683 kfree(fore200e);
2684
2685 return 0;
2686 }
2687
2688 static const struct of_device_id fore200e_sba_match[] = {
2689 {
2690 .name = SBA200E_PROM_NAME,
2691 .data = (void *) &fore200e_bus[1],
2692 },
2693 {},
2694 };
2695 MODULE_DEVICE_TABLE(of, fore200e_sba_match);
2696
2697 static struct of_platform_driver fore200e_sba_driver = {
2698 .name = "fore_200e",
2699 .match_table = fore200e_sba_match,
2700 .probe = fore200e_sba_probe,
2701 .remove = __devexit_p(fore200e_sba_remove),
2702 };
2703 #endif
2704
2705 #ifdef CONFIG_PCI
2706 static int __devinit
2707 fore200e_pca_detect(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
2708 {
2709 const struct fore200e_bus* bus = (struct fore200e_bus*) pci_ent->driver_data;
2710 struct fore200e* fore200e;
2711 int err = 0;
2712 static int index = 0;
2713
2714 if (pci_enable_device(pci_dev)) {
2715 err = -EINVAL;
2716 goto out;
2717 }
2718
2719 fore200e = kzalloc(sizeof(struct fore200e), GFP_KERNEL);
2720 if (fore200e == NULL) {
2721 err = -ENOMEM;
2722 goto out_disable;
2723 }
2724
2725 fore200e->bus = bus;
2726 fore200e->bus_dev = pci_dev;
2727 fore200e->irq = pci_dev->irq;
2728 fore200e->phys_base = pci_resource_start(pci_dev, 0);
2729
2730 sprintf(fore200e->name, "%s-%d", bus->model_name, index - 1);
2731
2732 pci_set_master(pci_dev);
2733
2734 printk(FORE200E "device %s found at 0x%lx, IRQ %s\n",
2735 fore200e->bus->model_name,
2736 fore200e->phys_base, fore200e_irq_itoa(fore200e->irq));
2737
2738 sprintf(fore200e->name, "%s-%d", bus->model_name, index);
2739
2740 err = fore200e_init(fore200e);
2741 if (err < 0) {
2742 fore200e_shutdown(fore200e);
2743 goto out_free;
2744 }
2745
2746 ++index;
2747 pci_set_drvdata(pci_dev, fore200e);
2748
2749 out:
2750 return err;
2751
2752 out_free:
2753 kfree(fore200e);
2754 out_disable:
2755 pci_disable_device(pci_dev);
2756 goto out;
2757 }
2758
2759
2760 static void __devexit fore200e_pca_remove_one(struct pci_dev *pci_dev)
2761 {
2762 struct fore200e *fore200e;
2763
2764 fore200e = pci_get_drvdata(pci_dev);
2765
2766 fore200e_shutdown(fore200e);
2767 kfree(fore200e);
2768 pci_disable_device(pci_dev);
2769 }
2770
2771
2772 static struct pci_device_id fore200e_pca_tbl[] = {
2773 { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_PCA200E, PCI_ANY_ID, PCI_ANY_ID,
2774 0, 0, (unsigned long) &fore200e_bus[0] },
2775 { 0, }
2776 };
2777
2778 MODULE_DEVICE_TABLE(pci, fore200e_pca_tbl);
2779
2780 static struct pci_driver fore200e_pca_driver = {
2781 .name = "fore_200e",
2782 .probe = fore200e_pca_detect,
2783 .remove = __devexit_p(fore200e_pca_remove_one),
2784 .id_table = fore200e_pca_tbl,
2785 };
2786 #endif
2787
2788 static int __init fore200e_module_init(void)
2789 {
2790 int err;
2791
2792 printk(FORE200E "FORE Systems 200E-series ATM driver - version " FORE200E_VERSION "\n");
2793
2794 #ifdef CONFIG_SBUS
2795 err = of_register_driver(&fore200e_sba_driver, &of_bus_type);
2796 if (err)
2797 return err;
2798 #endif
2799
2800 #ifdef CONFIG_PCI
2801 err = pci_register_driver(&fore200e_pca_driver);
2802 #endif
2803
2804 #ifdef CONFIG_SBUS
2805 if (err)
2806 of_unregister_driver(&fore200e_sba_driver);
2807 #endif
2808
2809 return err;
2810 }
2811
2812 static void __exit fore200e_module_cleanup(void)
2813 {
2814 #ifdef CONFIG_PCI
2815 pci_unregister_driver(&fore200e_pca_driver);
2816 #endif
2817 #ifdef CONFIG_SBUS
2818 of_unregister_driver(&fore200e_sba_driver);
2819 #endif
2820 }
2821
2822 static int
2823 fore200e_proc_read(struct atm_dev *dev, loff_t* pos, char* page)
2824 {
2825 struct fore200e* fore200e = FORE200E_DEV(dev);
2826 struct fore200e_vcc* fore200e_vcc;
2827 struct atm_vcc* vcc;
2828 int i, len, left = *pos;
2829 unsigned long flags;
2830
2831 if (!left--) {
2832
2833 if (fore200e_getstats(fore200e) < 0)
2834 return -EIO;
2835
2836 len = sprintf(page,"\n"
2837 " device:\n"
2838 " internal name:\t\t%s\n", fore200e->name);
2839
2840 /* print bus-specific information */
2841 if (fore200e->bus->proc_read)
2842 len += fore200e->bus->proc_read(fore200e, page + len);
2843
2844 len += sprintf(page + len,
2845 " interrupt line:\t\t%s\n"
2846 " physical base address:\t0x%p\n"
2847 " virtual base address:\t0x%p\n"
2848 " factory address (ESI):\t%02x:%02x:%02x:%02x:%02x:%02x\n"
2849 " board serial number:\t\t%d\n\n",
2850 fore200e_irq_itoa(fore200e->irq),
2851 (void*)fore200e->phys_base,
2852 fore200e->virt_base,
2853 fore200e->esi[0], fore200e->esi[1], fore200e->esi[2],
2854 fore200e->esi[3], fore200e->esi[4], fore200e->esi[5],
2855 fore200e->esi[4] * 256 + fore200e->esi[5]);
2856
2857 return len;
2858 }
2859
2860 if (!left--)
2861 return sprintf(page,
2862 " free small bufs, scheme 1:\t%d\n"
2863 " free large bufs, scheme 1:\t%d\n"
2864 " free small bufs, scheme 2:\t%d\n"
2865 " free large bufs, scheme 2:\t%d\n",
2866 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_SMALL ].freebuf_count,
2867 fore200e->host_bsq[ BUFFER_SCHEME_ONE ][ BUFFER_MAGN_LARGE ].freebuf_count,
2868 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_SMALL ].freebuf_count,
2869 fore200e->host_bsq[ BUFFER_SCHEME_TWO ][ BUFFER_MAGN_LARGE ].freebuf_count);
2870
2871 if (!left--) {
2872 u32 hb = fore200e->bus->read(&fore200e->cp_queues->heartbeat);
2873
2874 len = sprintf(page,"\n\n"
2875 " cell processor:\n"
2876 " heartbeat state:\t\t");
2877
2878 if (hb >> 16 != 0xDEAD)
2879 len += sprintf(page + len, "0x%08x\n", hb);
2880 else
2881 len += sprintf(page + len, "*** FATAL ERROR %04x ***\n", hb & 0xFFFF);
2882
2883 return len;
2884 }
2885
2886 if (!left--) {
2887 static const char* media_name[] = {
2888 "unshielded twisted pair",
2889 "multimode optical fiber ST",
2890 "multimode optical fiber SC",
2891 "single-mode optical fiber ST",
2892 "single-mode optical fiber SC",
2893 "unknown"
2894 };
2895
2896 static const char* oc3_mode[] = {
2897 "normal operation",
2898 "diagnostic loopback",
2899 "line loopback",
2900 "unknown"
2901 };
2902
2903 u32 fw_release = fore200e->bus->read(&fore200e->cp_queues->fw_release);
2904 u32 mon960_release = fore200e->bus->read(&fore200e->cp_queues->mon960_release);
2905 u32 oc3_revision = fore200e->bus->read(&fore200e->cp_queues->oc3_revision);
2906 u32 media_index = FORE200E_MEDIA_INDEX(fore200e->bus->read(&fore200e->cp_queues->media_type));
2907 u32 oc3_index;
2908
2909 if ((media_index < 0) || (media_index > 4))
2910 media_index = 5;
2911
2912 switch (fore200e->loop_mode) {
2913 case ATM_LM_NONE: oc3_index = 0;
2914 break;
2915 case ATM_LM_LOC_PHY: oc3_index = 1;
2916 break;
2917 case ATM_LM_RMT_PHY: oc3_index = 2;
2918 break;
2919 default: oc3_index = 3;
2920 }
2921
2922 return sprintf(page,
2923 " firmware release:\t\t%d.%d.%d\n"
2924 " monitor release:\t\t%d.%d\n"
2925 " media type:\t\t\t%s\n"
2926 " OC-3 revision:\t\t0x%x\n"
2927 " OC-3 mode:\t\t\t%s",
2928 fw_release >> 16, fw_release << 16 >> 24, fw_release << 24 >> 24,
2929 mon960_release >> 16, mon960_release << 16 >> 16,
2930 media_name[ media_index ],
2931 oc3_revision,
2932 oc3_mode[ oc3_index ]);
2933 }
2934
2935 if (!left--) {
2936 struct cp_monitor __iomem * cp_monitor = fore200e->cp_monitor;
2937
2938 return sprintf(page,
2939 "\n\n"
2940 " monitor:\n"
2941 " version number:\t\t%d\n"
2942 " boot status word:\t\t0x%08x\n",
2943 fore200e->bus->read(&cp_monitor->mon_version),
2944 fore200e->bus->read(&cp_monitor->bstat));
2945 }
2946
2947 if (!left--)
2948 return sprintf(page,
2949 "\n"
2950 " device statistics:\n"
2951 " 4b5b:\n"
2952 " crc_header_errors:\t\t%10u\n"
2953 " framing_errors:\t\t%10u\n",
2954 be32_to_cpu(fore200e->stats->phy.crc_header_errors),
2955 be32_to_cpu(fore200e->stats->phy.framing_errors));
2956
2957 if (!left--)
2958 return sprintf(page, "\n"
2959 " OC-3:\n"
2960 " section_bip8_errors:\t%10u\n"
2961 " path_bip8_errors:\t\t%10u\n"
2962 " line_bip24_errors:\t\t%10u\n"
2963 " line_febe_errors:\t\t%10u\n"
2964 " path_febe_errors:\t\t%10u\n"
2965 " corr_hcs_errors:\t\t%10u\n"
2966 " ucorr_hcs_errors:\t\t%10u\n",
2967 be32_to_cpu(fore200e->stats->oc3.section_bip8_errors),
2968 be32_to_cpu(fore200e->stats->oc3.path_bip8_errors),
2969 be32_to_cpu(fore200e->stats->oc3.line_bip24_errors),
2970 be32_to_cpu(fore200e->stats->oc3.line_febe_errors),
2971 be32_to_cpu(fore200e->stats->oc3.path_febe_errors),
2972 be32_to_cpu(fore200e->stats->oc3.corr_hcs_errors),
2973 be32_to_cpu(fore200e->stats->oc3.ucorr_hcs_errors));
2974
2975 if (!left--)
2976 return sprintf(page,"\n"
2977 " ATM:\t\t\t\t cells\n"
2978 " TX:\t\t\t%10u\n"
2979 " RX:\t\t\t%10u\n"
2980 " vpi out of range:\t\t%10u\n"
2981 " vpi no conn:\t\t%10u\n"
2982 " vci out of range:\t\t%10u\n"
2983 " vci no conn:\t\t%10u\n",
2984 be32_to_cpu(fore200e->stats->atm.cells_transmitted),
2985 be32_to_cpu(fore200e->stats->atm.cells_received),
2986 be32_to_cpu(fore200e->stats->atm.vpi_bad_range),
2987 be32_to_cpu(fore200e->stats->atm.vpi_no_conn),
2988 be32_to_cpu(fore200e->stats->atm.vci_bad_range),
2989 be32_to_cpu(fore200e->stats->atm.vci_no_conn));
2990
2991 if (!left--)
2992 return sprintf(page,"\n"
2993 " AAL0:\t\t\t cells\n"
2994 " TX:\t\t\t%10u\n"
2995 " RX:\t\t\t%10u\n"
2996 " dropped:\t\t\t%10u\n",
2997 be32_to_cpu(fore200e->stats->aal0.cells_transmitted),
2998 be32_to_cpu(fore200e->stats->aal0.cells_received),
2999 be32_to_cpu(fore200e->stats->aal0.cells_dropped));
3000
3001 if (!left--)
3002 return sprintf(page,"\n"
3003 " AAL3/4:\n"
3004 " SAR sublayer:\t\t cells\n"
3005 " TX:\t\t\t%10u\n"
3006 " RX:\t\t\t%10u\n"
3007 " dropped:\t\t\t%10u\n"
3008 " CRC errors:\t\t%10u\n"
3009 " protocol errors:\t\t%10u\n\n"
3010 " CS sublayer:\t\t PDUs\n"
3011 " TX:\t\t\t%10u\n"
3012 " RX:\t\t\t%10u\n"
3013 " dropped:\t\t\t%10u\n"
3014 " protocol errors:\t\t%10u\n",
3015 be32_to_cpu(fore200e->stats->aal34.cells_transmitted),
3016 be32_to_cpu(fore200e->stats->aal34.cells_received),
3017 be32_to_cpu(fore200e->stats->aal34.cells_dropped),
3018 be32_to_cpu(fore200e->stats->aal34.cells_crc_errors),
3019 be32_to_cpu(fore200e->stats->aal34.cells_protocol_errors),
3020 be32_to_cpu(fore200e->stats->aal34.cspdus_transmitted),
3021 be32_to_cpu(fore200e->stats->aal34.cspdus_received),
3022 be32_to_cpu(fore200e->stats->aal34.cspdus_dropped),
3023 be32_to_cpu(fore200e->stats->aal34.cspdus_protocol_errors));
3024
3025 if (!left--)
3026 return sprintf(page,"\n"
3027 " AAL5:\n"
3028 " SAR sublayer:\t\t cells\n"
3029 " TX:\t\t\t%10u\n"
3030 " RX:\t\t\t%10u\n"
3031 " dropped:\t\t\t%10u\n"
3032 " congestions:\t\t%10u\n\n"
3033 " CS sublayer:\t\t PDUs\n"
3034 " TX:\t\t\t%10u\n"
3035 " RX:\t\t\t%10u\n"
3036 " dropped:\t\t\t%10u\n"
3037 " CRC errors:\t\t%10u\n"
3038 " protocol errors:\t\t%10u\n",
3039 be32_to_cpu(fore200e->stats->aal5.cells_transmitted),
3040 be32_to_cpu(fore200e->stats->aal5.cells_received),
3041 be32_to_cpu(fore200e->stats->aal5.cells_dropped),
3042 be32_to_cpu(fore200e->stats->aal5.congestion_experienced),
3043 be32_to_cpu(fore200e->stats->aal5.cspdus_transmitted),
3044 be32_to_cpu(fore200e->stats->aal5.cspdus_received),
3045 be32_to_cpu(fore200e->stats->aal5.cspdus_dropped),
3046 be32_to_cpu(fore200e->stats->aal5.cspdus_crc_errors),
3047 be32_to_cpu(fore200e->stats->aal5.cspdus_protocol_errors));
3048
3049 if (!left--)
3050 return sprintf(page,"\n"
3051 " AUX:\t\t allocation failures\n"
3052 " small b1:\t\t\t%10u\n"
3053 " large b1:\t\t\t%10u\n"
3054 " small b2:\t\t\t%10u\n"
3055 " large b2:\t\t\t%10u\n"
3056 " RX PDUs:\t\t\t%10u\n"
3057 " TX PDUs:\t\t\t%10lu\n",
3058 be32_to_cpu(fore200e->stats->aux.small_b1_failed),
3059 be32_to_cpu(fore200e->stats->aux.large_b1_failed),
3060 be32_to_cpu(fore200e->stats->aux.small_b2_failed),
3061 be32_to_cpu(fore200e->stats->aux.large_b2_failed),
3062 be32_to_cpu(fore200e->stats->aux.rpd_alloc_failed),
3063 fore200e->tx_sat);
3064
3065 if (!left--)
3066 return sprintf(page,"\n"
3067 " receive carrier:\t\t\t%s\n",
3068 fore200e->stats->aux.receive_carrier ? "ON" : "OFF!");
3069
3070 if (!left--) {
3071 return sprintf(page,"\n"
3072 " VCCs:\n address VPI VCI AAL "
3073 "TX PDUs TX min/max size RX PDUs RX min/max size\n");
3074 }
3075
3076 for (i = 0; i < NBR_CONNECT; i++) {
3077
3078 vcc = fore200e->vc_map[i].vcc;
3079
3080 if (vcc == NULL)
3081 continue;
3082
3083 spin_lock_irqsave(&fore200e->q_lock, flags);
3084
3085 if (vcc && test_bit(ATM_VF_READY, &vcc->flags) && !left--) {
3086
3087 fore200e_vcc = FORE200E_VCC(vcc);
3088 ASSERT(fore200e_vcc);
3089
3090 len = sprintf(page,
3091 " %08x %03d %05d %1d %09lu %05d/%05d %09lu %05d/%05d\n",
3092 (u32)(unsigned long)vcc,
3093 vcc->vpi, vcc->vci, fore200e_atm2fore_aal(vcc->qos.aal),
3094 fore200e_vcc->tx_pdu,
3095 fore200e_vcc->tx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->tx_min_pdu,
3096 fore200e_vcc->tx_max_pdu,
3097 fore200e_vcc->rx_pdu,
3098 fore200e_vcc->rx_min_pdu > 0xFFFF ? 0 : fore200e_vcc->rx_min_pdu,
3099 fore200e_vcc->rx_max_pdu);
3100
3101 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3102 return len;
3103 }
3104
3105 spin_unlock_irqrestore(&fore200e->q_lock, flags);
3106 }
3107
3108 return 0;
3109 }
3110
3111 module_init(fore200e_module_init);
3112 module_exit(fore200e_module_cleanup);
3113
3114
3115 static const struct atmdev_ops fore200e_ops =
3116 {
3117 .open = fore200e_open,
3118 .close = fore200e_close,
3119 .ioctl = fore200e_ioctl,
3120 .getsockopt = fore200e_getsockopt,
3121 .setsockopt = fore200e_setsockopt,
3122 .send = fore200e_send,
3123 .change_qos = fore200e_change_qos,
3124 .proc_read = fore200e_proc_read,
3125 .owner = THIS_MODULE
3126 };
3127
3128
3129 static const struct fore200e_bus fore200e_bus[] = {
3130 #ifdef CONFIG_PCI
3131 { "PCA-200E", "pca200e", 32, 4, 32,
3132 fore200e_pca_read,
3133 fore200e_pca_write,
3134 fore200e_pca_dma_map,
3135 fore200e_pca_dma_unmap,
3136 fore200e_pca_dma_sync_for_cpu,
3137 fore200e_pca_dma_sync_for_device,
3138 fore200e_pca_dma_chunk_alloc,
3139 fore200e_pca_dma_chunk_free,
3140 fore200e_pca_configure,
3141 fore200e_pca_map,
3142 fore200e_pca_reset,
3143 fore200e_pca_prom_read,
3144 fore200e_pca_unmap,
3145 NULL,
3146 fore200e_pca_irq_check,
3147 fore200e_pca_irq_ack,
3148 fore200e_pca_proc_read,
3149 },
3150 #endif
3151 #ifdef CONFIG_SBUS
3152 { "SBA-200E", "sba200e", 32, 64, 32,
3153 fore200e_sba_read,
3154 fore200e_sba_write,
3155 fore200e_sba_dma_map,
3156 fore200e_sba_dma_unmap,
3157 fore200e_sba_dma_sync_for_cpu,
3158 fore200e_sba_dma_sync_for_device,
3159 fore200e_sba_dma_chunk_alloc,
3160 fore200e_sba_dma_chunk_free,
3161 fore200e_sba_configure,
3162 fore200e_sba_map,
3163 fore200e_sba_reset,
3164 fore200e_sba_prom_read,
3165 fore200e_sba_unmap,
3166 fore200e_sba_irq_enable,
3167 fore200e_sba_irq_check,
3168 fore200e_sba_irq_ack,
3169 fore200e_sba_proc_read,
3170 },
3171 #endif
3172 {}
3173 };
3174
3175 MODULE_LICENSE("GPL");
3176 #ifdef CONFIG_PCI
3177 #ifdef __LITTLE_ENDIAN__
3178 MODULE_FIRMWARE("pca200e.bin");
3179 #else
3180 MODULE_FIRMWARE("pca200e_ecd.bin2");
3181 #endif
3182 #endif /* CONFIG_PCI */
3183 #ifdef CONFIG_SBUS
3184 MODULE_FIRMWARE("sba200e_ecd.bin2");
3185 #endif
Nao low-level kernelspace/userspace library that runs on our robots, Nao-Team HTWK