projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
[deliverable/linux.git] / drivers / vme / bridges / vme_ca91cx42.c
1 /*
2 * Support for the Tundra Universe I/II VME-PCI Bridge Chips
3 *
4 * Author: Martyn Welch <martyn.welch@ge.com>
5 * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
6 *
7 * Based on work by Tom Armistead and Ajit Prem
8 * Copyright 2004 Motorola Inc.
9 *
10 * Derived from ca91c042.c by Michael Wyrick
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18 #include <linux/module.h>
19 #include <linux/mm.h>
20 #include <linux/types.h>
21 #include <linux/errno.h>
22 #include <linux/pci.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/poll.h>
25 #include <linux/interrupt.h>
26 #include <linux/spinlock.h>
27 #include <linux/sched.h>
28 #include <linux/slab.h>
29 #include <linux/time.h>
30 #include <linux/io.h>
31 #include <linux/uaccess.h>
32 #include <linux/vme.h>
33
34 #include "../vme_bridge.h"
35 #include "vme_ca91cx42.h"
36
37 static int ca91cx42_probe(struct pci_dev *, const struct pci_device_id *);
38 static void ca91cx42_remove(struct pci_dev *);
39
40 /* Module parameters */
41 static int geoid;
42
43 static const char driver_name[] = "vme_ca91cx42";
44
45 static const struct pci_device_id ca91cx42_ids[] = {
46 { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_CA91C142) },
47 { },
48 };
49
50 static struct pci_driver ca91cx42_driver = {
51 .name = driver_name,
52 .id_table = ca91cx42_ids,
53 .probe = ca91cx42_probe,
54 .remove = ca91cx42_remove,
55 };
56
57 static u32 ca91cx42_DMA_irqhandler(struct ca91cx42_driver *bridge)
58 {
59 wake_up(&bridge->dma_queue);
60
61 return CA91CX42_LINT_DMA;
62 }
63
64 static u32 ca91cx42_LM_irqhandler(struct ca91cx42_driver *bridge, u32 stat)
65 {
66 int i;
67 u32 serviced = 0;
68
69 for (i = 0; i < 4; i++) {
70 if (stat & CA91CX42_LINT_LM[i]) {
71 /* We only enable interrupts if the callback is set */
72 bridge->lm_callback[i](i);
73 serviced |= CA91CX42_LINT_LM[i];
74 }
75 }
76
77 return serviced;
78 }
79
80 /* XXX This needs to be split into 4 queues */
81 static u32 ca91cx42_MB_irqhandler(struct ca91cx42_driver *bridge, int mbox_mask)
82 {
83 wake_up(&bridge->mbox_queue);
84
85 return CA91CX42_LINT_MBOX;
86 }
87
88 static u32 ca91cx42_IACK_irqhandler(struct ca91cx42_driver *bridge)
89 {
90 wake_up(&bridge->iack_queue);
91
92 return CA91CX42_LINT_SW_IACK;
93 }
94
95 static u32 ca91cx42_VERR_irqhandler(struct vme_bridge *ca91cx42_bridge)
96 {
97 int val;
98 struct ca91cx42_driver *bridge;
99
100 bridge = ca91cx42_bridge->driver_priv;
101
102 val = ioread32(bridge->base + DGCS);
103
104 if (!(val & 0x00000800)) {
105 dev_err(ca91cx42_bridge->parent, "ca91cx42_VERR_irqhandler DMA "
106 "Read Error DGCS=%08X\n", val);
107 }
108
109 return CA91CX42_LINT_VERR;
110 }
111
112 static u32 ca91cx42_LERR_irqhandler(struct vme_bridge *ca91cx42_bridge)
113 {
114 int val;
115 struct ca91cx42_driver *bridge;
116
117 bridge = ca91cx42_bridge->driver_priv;
118
119 val = ioread32(bridge->base + DGCS);
120
121 if (!(val & 0x00000800))
122 dev_err(ca91cx42_bridge->parent, "ca91cx42_LERR_irqhandler DMA "
123 "Read Error DGCS=%08X\n", val);
124
125 return CA91CX42_LINT_LERR;
126 }
127
128
129 static u32 ca91cx42_VIRQ_irqhandler(struct vme_bridge *ca91cx42_bridge,
130 int stat)
131 {
132 int vec, i, serviced = 0;
133 struct ca91cx42_driver *bridge;
134
135 bridge = ca91cx42_bridge->driver_priv;
136
137
138 for (i = 7; i > 0; i--) {
139 if (stat & (1 << i)) {
140 vec = ioread32(bridge->base +
141 CA91CX42_V_STATID[i]) & 0xff;
142
143 vme_irq_handler(ca91cx42_bridge, i, vec);
144
145 serviced |= (1 << i);
146 }
147 }
148
149 return serviced;
150 }
151
152 static irqreturn_t ca91cx42_irqhandler(int irq, void *ptr)
153 {
154 u32 stat, enable, serviced = 0;
155 struct vme_bridge *ca91cx42_bridge;
156 struct ca91cx42_driver *bridge;
157
158 ca91cx42_bridge = ptr;
159
160 bridge = ca91cx42_bridge->driver_priv;
161
162 enable = ioread32(bridge->base + LINT_EN);
163 stat = ioread32(bridge->base + LINT_STAT);
164
165 /* Only look at unmasked interrupts */
166 stat &= enable;
167
168 if (unlikely(!stat))
169 return IRQ_NONE;
170
171 if (stat & CA91CX42_LINT_DMA)
172 serviced |= ca91cx42_DMA_irqhandler(bridge);
173 if (stat & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 |
174 CA91CX42_LINT_LM3))
175 serviced |= ca91cx42_LM_irqhandler(bridge, stat);
176 if (stat & CA91CX42_LINT_MBOX)
177 serviced |= ca91cx42_MB_irqhandler(bridge, stat);
178 if (stat & CA91CX42_LINT_SW_IACK)
179 serviced |= ca91cx42_IACK_irqhandler(bridge);
180 if (stat & CA91CX42_LINT_VERR)
181 serviced |= ca91cx42_VERR_irqhandler(ca91cx42_bridge);
182 if (stat & CA91CX42_LINT_LERR)
183 serviced |= ca91cx42_LERR_irqhandler(ca91cx42_bridge);
184 if (stat & (CA91CX42_LINT_VIRQ1 | CA91CX42_LINT_VIRQ2 |
185 CA91CX42_LINT_VIRQ3 | CA91CX42_LINT_VIRQ4 |
186 CA91CX42_LINT_VIRQ5 | CA91CX42_LINT_VIRQ6 |
187 CA91CX42_LINT_VIRQ7))
188 serviced |= ca91cx42_VIRQ_irqhandler(ca91cx42_bridge, stat);
189
190 /* Clear serviced interrupts */
191 iowrite32(serviced, bridge->base + LINT_STAT);
192
193 return IRQ_HANDLED;
194 }
195
196 static int ca91cx42_irq_init(struct vme_bridge *ca91cx42_bridge)
197 {
198 int result, tmp;
199 struct pci_dev *pdev;
200 struct ca91cx42_driver *bridge;
201
202 bridge = ca91cx42_bridge->driver_priv;
203
204 /* Need pdev */
205 pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev);
206
207 INIT_LIST_HEAD(&ca91cx42_bridge->vme_error_handlers);
208
209 mutex_init(&ca91cx42_bridge->irq_mtx);
210
211 /* Disable interrupts from PCI to VME */
212 iowrite32(0, bridge->base + VINT_EN);
213
214 /* Disable PCI interrupts */
215 iowrite32(0, bridge->base + LINT_EN);
216 /* Clear Any Pending PCI Interrupts */
217 iowrite32(0x00FFFFFF, bridge->base + LINT_STAT);
218
219 result = request_irq(pdev->irq, ca91cx42_irqhandler, IRQF_SHARED,
220 driver_name, ca91cx42_bridge);
221 if (result) {
222 dev_err(&pdev->dev, "Can't get assigned pci irq vector %02X\n",
223 pdev->irq);
224 return result;
225 }
226
227 /* Ensure all interrupts are mapped to PCI Interrupt 0 */
228 iowrite32(0, bridge->base + LINT_MAP0);
229 iowrite32(0, bridge->base + LINT_MAP1);
230 iowrite32(0, bridge->base + LINT_MAP2);
231
232 /* Enable DMA, mailbox & LM Interrupts */
233 tmp = CA91CX42_LINT_MBOX3 | CA91CX42_LINT_MBOX2 | CA91CX42_LINT_MBOX1 |
234 CA91CX42_LINT_MBOX0 | CA91CX42_LINT_SW_IACK |
235 CA91CX42_LINT_VERR | CA91CX42_LINT_LERR | CA91CX42_LINT_DMA;
236
237 iowrite32(tmp, bridge->base + LINT_EN);
238
239 return 0;
240 }
241
242 static void ca91cx42_irq_exit(struct ca91cx42_driver *bridge,
243 struct pci_dev *pdev)
244 {
245 struct vme_bridge *ca91cx42_bridge;
246
247 /* Disable interrupts from PCI to VME */
248 iowrite32(0, bridge->base + VINT_EN);
249
250 /* Disable PCI interrupts */
251 iowrite32(0, bridge->base + LINT_EN);
252 /* Clear Any Pending PCI Interrupts */
253 iowrite32(0x00FFFFFF, bridge->base + LINT_STAT);
254
255 ca91cx42_bridge = container_of((void *)bridge, struct vme_bridge,
256 driver_priv);
257 free_irq(pdev->irq, ca91cx42_bridge);
258 }
259
260 static int ca91cx42_iack_received(struct ca91cx42_driver *bridge, int level)
261 {
262 u32 tmp;
263
264 tmp = ioread32(bridge->base + LINT_STAT);
265
266 if (tmp & (1 << level))
267 return 0;
268 else
269 return 1;
270 }
271
272 /*
273 * Set up an VME interrupt
274 */
275 static void ca91cx42_irq_set(struct vme_bridge *ca91cx42_bridge, int level,
276 int state, int sync)
277
278 {
279 struct pci_dev *pdev;
280 u32 tmp;
281 struct ca91cx42_driver *bridge;
282
283 bridge = ca91cx42_bridge->driver_priv;
284
285 /* Enable IRQ level */
286 tmp = ioread32(bridge->base + LINT_EN);
287
288 if (state == 0)
289 tmp &= ~CA91CX42_LINT_VIRQ[level];
290 else
291 tmp |= CA91CX42_LINT_VIRQ[level];
292
293 iowrite32(tmp, bridge->base + LINT_EN);
294
295 if ((state == 0) && (sync != 0)) {
296 pdev = container_of(ca91cx42_bridge->parent, struct pci_dev,
297 dev);
298
299 synchronize_irq(pdev->irq);
300 }
301 }
302
303 static int ca91cx42_irq_generate(struct vme_bridge *ca91cx42_bridge, int level,
304 int statid)
305 {
306 u32 tmp;
307 struct ca91cx42_driver *bridge;
308
309 bridge = ca91cx42_bridge->driver_priv;
310
311 /* Universe can only generate even vectors */
312 if (statid & 1)
313 return -EINVAL;
314
315 mutex_lock(&bridge->vme_int);
316
317 tmp = ioread32(bridge->base + VINT_EN);
318
319 /* Set Status/ID */
320 iowrite32(statid << 24, bridge->base + STATID);
321
322 /* Assert VMEbus IRQ */
323 tmp = tmp | (1 << (level + 24));
324 iowrite32(tmp, bridge->base + VINT_EN);
325
326 /* Wait for IACK */
327 wait_event_interruptible(bridge->iack_queue,
328 ca91cx42_iack_received(bridge, level));
329
330 /* Return interrupt to low state */
331 tmp = ioread32(bridge->base + VINT_EN);
332 tmp = tmp & ~(1 << (level + 24));
333 iowrite32(tmp, bridge->base + VINT_EN);
334
335 mutex_unlock(&bridge->vme_int);
336
337 return 0;
338 }
339
340 static int ca91cx42_slave_set(struct vme_slave_resource *image, int enabled,
341 unsigned long long vme_base, unsigned long long size,
342 dma_addr_t pci_base, u32 aspace, u32 cycle)
343 {
344 unsigned int i, addr = 0, granularity;
345 unsigned int temp_ctl = 0;
346 unsigned int vme_bound, pci_offset;
347 struct vme_bridge *ca91cx42_bridge;
348 struct ca91cx42_driver *bridge;
349
350 ca91cx42_bridge = image->parent;
351
352 bridge = ca91cx42_bridge->driver_priv;
353
354 i = image->number;
355
356 switch (aspace) {
357 case VME_A16:
358 addr |= CA91CX42_VSI_CTL_VAS_A16;
359 break;
360 case VME_A24:
361 addr |= CA91CX42_VSI_CTL_VAS_A24;
362 break;
363 case VME_A32:
364 addr |= CA91CX42_VSI_CTL_VAS_A32;
365 break;
366 case VME_USER1:
367 addr |= CA91CX42_VSI_CTL_VAS_USER1;
368 break;
369 case VME_USER2:
370 addr |= CA91CX42_VSI_CTL_VAS_USER2;
371 break;
372 case VME_A64:
373 case VME_CRCSR:
374 case VME_USER3:
375 case VME_USER4:
376 default:
377 dev_err(ca91cx42_bridge->parent, "Invalid address space\n");
378 return -EINVAL;
379 break;
380 }
381
382 /*
383 * Bound address is a valid address for the window, adjust
384 * accordingly
385 */
386 vme_bound = vme_base + size;
387 pci_offset = pci_base - vme_base;
388
389 if ((i == 0) || (i == 4))
390 granularity = 0x1000;
391 else
392 granularity = 0x10000;
393
394 if (vme_base & (granularity - 1)) {
395 dev_err(ca91cx42_bridge->parent, "Invalid VME base "
396 "alignment\n");
397 return -EINVAL;
398 }
399 if (vme_bound & (granularity - 1)) {
400 dev_err(ca91cx42_bridge->parent, "Invalid VME bound "
401 "alignment\n");
402 return -EINVAL;
403 }
404 if (pci_offset & (granularity - 1)) {
405 dev_err(ca91cx42_bridge->parent, "Invalid PCI Offset "
406 "alignment\n");
407 return -EINVAL;
408 }
409
410 /* Disable while we are mucking around */
411 temp_ctl = ioread32(bridge->base + CA91CX42_VSI_CTL[i]);
412 temp_ctl &= ~CA91CX42_VSI_CTL_EN;
413 iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]);
414
415 /* Setup mapping */
416 iowrite32(vme_base, bridge->base + CA91CX42_VSI_BS[i]);
417 iowrite32(vme_bound, bridge->base + CA91CX42_VSI_BD[i]);
418 iowrite32(pci_offset, bridge->base + CA91CX42_VSI_TO[i]);
419
420 /* Setup address space */
421 temp_ctl &= ~CA91CX42_VSI_CTL_VAS_M;
422 temp_ctl |= addr;
423
424 /* Setup cycle types */
425 temp_ctl &= ~(CA91CX42_VSI_CTL_PGM_M | CA91CX42_VSI_CTL_SUPER_M);
426 if (cycle & VME_SUPER)
427 temp_ctl |= CA91CX42_VSI_CTL_SUPER_SUPR;
428 if (cycle & VME_USER)
429 temp_ctl |= CA91CX42_VSI_CTL_SUPER_NPRIV;
430 if (cycle & VME_PROG)
431 temp_ctl |= CA91CX42_VSI_CTL_PGM_PGM;
432 if (cycle & VME_DATA)
433 temp_ctl |= CA91CX42_VSI_CTL_PGM_DATA;
434
435 /* Write ctl reg without enable */
436 iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]);
437
438 if (enabled)
439 temp_ctl |= CA91CX42_VSI_CTL_EN;
440
441 iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]);
442
443 return 0;
444 }
445
446 static int ca91cx42_slave_get(struct vme_slave_resource *image, int *enabled,
447 unsigned long long *vme_base, unsigned long long *size,
448 dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
449 {
450 unsigned int i, granularity = 0, ctl = 0;
451 unsigned long long vme_bound, pci_offset;
452 struct ca91cx42_driver *bridge;
453
454 bridge = image->parent->driver_priv;
455
456 i = image->number;
457
458 if ((i == 0) || (i == 4))
459 granularity = 0x1000;
460 else
461 granularity = 0x10000;
462
463 /* Read Registers */
464 ctl = ioread32(bridge->base + CA91CX42_VSI_CTL[i]);
465
466 *vme_base = ioread32(bridge->base + CA91CX42_VSI_BS[i]);
467 vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[i]);
468 pci_offset = ioread32(bridge->base + CA91CX42_VSI_TO[i]);
469
470 *pci_base = (dma_addr_t)vme_base + pci_offset;
471 *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
472
473 *enabled = 0;
474 *aspace = 0;
475 *cycle = 0;
476
477 if (ctl & CA91CX42_VSI_CTL_EN)
478 *enabled = 1;
479
480 if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A16)
481 *aspace = VME_A16;
482 if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A24)
483 *aspace = VME_A24;
484 if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A32)
485 *aspace = VME_A32;
486 if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_USER1)
487 *aspace = VME_USER1;
488 if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_USER2)
489 *aspace = VME_USER2;
490
491 if (ctl & CA91CX42_VSI_CTL_SUPER_SUPR)
492 *cycle |= VME_SUPER;
493 if (ctl & CA91CX42_VSI_CTL_SUPER_NPRIV)
494 *cycle |= VME_USER;
495 if (ctl & CA91CX42_VSI_CTL_PGM_PGM)
496 *cycle |= VME_PROG;
497 if (ctl & CA91CX42_VSI_CTL_PGM_DATA)
498 *cycle |= VME_DATA;
499
500 return 0;
501 }
502
503 /*
504 * Allocate and map PCI Resource
505 */
506 static int ca91cx42_alloc_resource(struct vme_master_resource *image,
507 unsigned long long size)
508 {
509 unsigned long long existing_size;
510 int retval = 0;
511 struct pci_dev *pdev;
512 struct vme_bridge *ca91cx42_bridge;
513
514 ca91cx42_bridge = image->parent;
515
516 /* Find pci_dev container of dev */
517 if (ca91cx42_bridge->parent == NULL) {
518 dev_err(ca91cx42_bridge->parent, "Dev entry NULL\n");
519 return -EINVAL;
520 }
521 pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev);
522
523 existing_size = (unsigned long long)(image->bus_resource.end -
524 image->bus_resource.start);
525
526 /* If the existing size is OK, return */
527 if (existing_size == (size - 1))
528 return 0;
529
530 if (existing_size != 0) {
531 iounmap(image->kern_base);
532 image->kern_base = NULL;
533 kfree(image->bus_resource.name);
534 release_resource(&image->bus_resource);
535 memset(&image->bus_resource, 0, sizeof(struct resource));
536 }
537
538 if (image->bus_resource.name == NULL) {
539 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
540 if (image->bus_resource.name == NULL) {
541 dev_err(ca91cx42_bridge->parent, "Unable to allocate "
542 "memory for resource name\n");
543 retval = -ENOMEM;
544 goto err_name;
545 }
546 }
547
548 sprintf((char *)image->bus_resource.name, "%s.%d",
549 ca91cx42_bridge->name, image->number);
550
551 image->bus_resource.start = 0;
552 image->bus_resource.end = (unsigned long)size;
553 image->bus_resource.flags = IORESOURCE_MEM;
554
555 retval = pci_bus_alloc_resource(pdev->bus,
556 &image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM,
557 0, NULL, NULL);
558 if (retval) {
559 dev_err(ca91cx42_bridge->parent, "Failed to allocate mem "
560 "resource for window %d size 0x%lx start 0x%lx\n",
561 image->number, (unsigned long)size,
562 (unsigned long)image->bus_resource.start);
563 goto err_resource;
564 }
565
566 image->kern_base = ioremap_nocache(
567 image->bus_resource.start, size);
568 if (image->kern_base == NULL) {
569 dev_err(ca91cx42_bridge->parent, "Failed to remap resource\n");
570 retval = -ENOMEM;
571 goto err_remap;
572 }
573
574 return 0;
575
576 err_remap:
577 release_resource(&image->bus_resource);
578 err_resource:
579 kfree(image->bus_resource.name);
580 memset(&image->bus_resource, 0, sizeof(struct resource));
581 err_name:
582 return retval;
583 }
584
585 /*
586 * Free and unmap PCI Resource
587 */
588 static void ca91cx42_free_resource(struct vme_master_resource *image)
589 {
590 iounmap(image->kern_base);
591 image->kern_base = NULL;
592 release_resource(&image->bus_resource);
593 kfree(image->bus_resource.name);
594 memset(&image->bus_resource, 0, sizeof(struct resource));
595 }
596
597
598 static int ca91cx42_master_set(struct vme_master_resource *image, int enabled,
599 unsigned long long vme_base, unsigned long long size, u32 aspace,
600 u32 cycle, u32 dwidth)
601 {
602 int retval = 0;
603 unsigned int i, granularity = 0;
604 unsigned int temp_ctl = 0;
605 unsigned long long pci_bound, vme_offset, pci_base;
606 struct vme_bridge *ca91cx42_bridge;
607 struct ca91cx42_driver *bridge;
608
609 ca91cx42_bridge = image->parent;
610
611 bridge = ca91cx42_bridge->driver_priv;
612
613 i = image->number;
614
615 if ((i == 0) || (i == 4))
616 granularity = 0x1000;
617 else
618 granularity = 0x10000;
619
620 /* Verify input data */
621 if (vme_base & (granularity - 1)) {
622 dev_err(ca91cx42_bridge->parent, "Invalid VME Window "
623 "alignment\n");
624 retval = -EINVAL;
625 goto err_window;
626 }
627 if (size & (granularity - 1)) {
628 dev_err(ca91cx42_bridge->parent, "Invalid VME Window "
629 "alignment\n");
630 retval = -EINVAL;
631 goto err_window;
632 }
633
634 spin_lock(&image->lock);
635
636 /*
637 * Let's allocate the resource here rather than further up the stack as
638 * it avoids pushing loads of bus dependent stuff up the stack
639 */
640 retval = ca91cx42_alloc_resource(image, size);
641 if (retval) {
642 spin_unlock(&image->lock);
643 dev_err(ca91cx42_bridge->parent, "Unable to allocate memory "
644 "for resource name\n");
645 retval = -ENOMEM;
646 goto err_res;
647 }
648
649 pci_base = (unsigned long long)image->bus_resource.start;
650
651 /*
652 * Bound address is a valid address for the window, adjust
653 * according to window granularity.
654 */
655 pci_bound = pci_base + size;
656 vme_offset = vme_base - pci_base;
657
658 /* Disable while we are mucking around */
659 temp_ctl = ioread32(bridge->base + CA91CX42_LSI_CTL[i]);
660 temp_ctl &= ~CA91CX42_LSI_CTL_EN;
661 iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]);
662
663 /* Setup cycle types */
664 temp_ctl &= ~CA91CX42_LSI_CTL_VCT_M;
665 if (cycle & VME_BLT)
666 temp_ctl |= CA91CX42_LSI_CTL_VCT_BLT;
667 if (cycle & VME_MBLT)
668 temp_ctl |= CA91CX42_LSI_CTL_VCT_MBLT;
669
670 /* Setup data width */
671 temp_ctl &= ~CA91CX42_LSI_CTL_VDW_M;
672 switch (dwidth) {
673 case VME_D8:
674 temp_ctl |= CA91CX42_LSI_CTL_VDW_D8;
675 break;
676 case VME_D16:
677 temp_ctl |= CA91CX42_LSI_CTL_VDW_D16;
678 break;
679 case VME_D32:
680 temp_ctl |= CA91CX42_LSI_CTL_VDW_D32;
681 break;
682 case VME_D64:
683 temp_ctl |= CA91CX42_LSI_CTL_VDW_D64;
684 break;
685 default:
686 spin_unlock(&image->lock);
687 dev_err(ca91cx42_bridge->parent, "Invalid data width\n");
688 retval = -EINVAL;
689 goto err_dwidth;
690 break;
691 }
692
693 /* Setup address space */
694 temp_ctl &= ~CA91CX42_LSI_CTL_VAS_M;
695 switch (aspace) {
696 case VME_A16:
697 temp_ctl |= CA91CX42_LSI_CTL_VAS_A16;
698 break;
699 case VME_A24:
700 temp_ctl |= CA91CX42_LSI_CTL_VAS_A24;
701 break;
702 case VME_A32:
703 temp_ctl |= CA91CX42_LSI_CTL_VAS_A32;
704 break;
705 case VME_CRCSR:
706 temp_ctl |= CA91CX42_LSI_CTL_VAS_CRCSR;
707 break;
708 case VME_USER1:
709 temp_ctl |= CA91CX42_LSI_CTL_VAS_USER1;
710 break;
711 case VME_USER2:
712 temp_ctl |= CA91CX42_LSI_CTL_VAS_USER2;
713 break;
714 case VME_A64:
715 case VME_USER3:
716 case VME_USER4:
717 default:
718 spin_unlock(&image->lock);
719 dev_err(ca91cx42_bridge->parent, "Invalid address space\n");
720 retval = -EINVAL;
721 goto err_aspace;
722 break;
723 }
724
725 temp_ctl &= ~(CA91CX42_LSI_CTL_PGM_M | CA91CX42_LSI_CTL_SUPER_M);
726 if (cycle & VME_SUPER)
727 temp_ctl |= CA91CX42_LSI_CTL_SUPER_SUPR;
728 if (cycle & VME_PROG)
729 temp_ctl |= CA91CX42_LSI_CTL_PGM_PGM;
730
731 /* Setup mapping */
732 iowrite32(pci_base, bridge->base + CA91CX42_LSI_BS[i]);
733 iowrite32(pci_bound, bridge->base + CA91CX42_LSI_BD[i]);
734 iowrite32(vme_offset, bridge->base + CA91CX42_LSI_TO[i]);
735
736 /* Write ctl reg without enable */
737 iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]);
738
739 if (enabled)
740 temp_ctl |= CA91CX42_LSI_CTL_EN;
741
742 iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]);
743
744 spin_unlock(&image->lock);
745 return 0;
746
747 err_aspace:
748 err_dwidth:
749 ca91cx42_free_resource(image);
750 err_res:
751 err_window:
752 return retval;
753 }
754
755 static int __ca91cx42_master_get(struct vme_master_resource *image,
756 int *enabled, unsigned long long *vme_base, unsigned long long *size,
757 u32 *aspace, u32 *cycle, u32 *dwidth)
758 {
759 unsigned int i, ctl;
760 unsigned long long pci_base, pci_bound, vme_offset;
761 struct ca91cx42_driver *bridge;
762
763 bridge = image->parent->driver_priv;
764
765 i = image->number;
766
767 ctl = ioread32(bridge->base + CA91CX42_LSI_CTL[i]);
768
769 pci_base = ioread32(bridge->base + CA91CX42_LSI_BS[i]);
770 vme_offset = ioread32(bridge->base + CA91CX42_LSI_TO[i]);
771 pci_bound = ioread32(bridge->base + CA91CX42_LSI_BD[i]);
772
773 *vme_base = pci_base + vme_offset;
774 *size = (unsigned long long)(pci_bound - pci_base);
775
776 *enabled = 0;
777 *aspace = 0;
778 *cycle = 0;
779 *dwidth = 0;
780
781 if (ctl & CA91CX42_LSI_CTL_EN)
782 *enabled = 1;
783
784 /* Setup address space */
785 switch (ctl & CA91CX42_LSI_CTL_VAS_M) {
786 case CA91CX42_LSI_CTL_VAS_A16:
787 *aspace = VME_A16;
788 break;
789 case CA91CX42_LSI_CTL_VAS_A24:
790 *aspace = VME_A24;
791 break;
792 case CA91CX42_LSI_CTL_VAS_A32:
793 *aspace = VME_A32;
794 break;
795 case CA91CX42_LSI_CTL_VAS_CRCSR:
796 *aspace = VME_CRCSR;
797 break;
798 case CA91CX42_LSI_CTL_VAS_USER1:
799 *aspace = VME_USER1;
800 break;
801 case CA91CX42_LSI_CTL_VAS_USER2:
802 *aspace = VME_USER2;
803 break;
804 }
805
806 /* XXX Not sure howto check for MBLT */
807 /* Setup cycle types */
808 if (ctl & CA91CX42_LSI_CTL_VCT_BLT)
809 *cycle |= VME_BLT;
810 else
811 *cycle |= VME_SCT;
812
813 if (ctl & CA91CX42_LSI_CTL_SUPER_SUPR)
814 *cycle |= VME_SUPER;
815 else
816 *cycle |= VME_USER;
817
818 if (ctl & CA91CX42_LSI_CTL_PGM_PGM)
819 *cycle = VME_PROG;
820 else
821 *cycle = VME_DATA;
822
823 /* Setup data width */
824 switch (ctl & CA91CX42_LSI_CTL_VDW_M) {
825 case CA91CX42_LSI_CTL_VDW_D8:
826 *dwidth = VME_D8;
827 break;
828 case CA91CX42_LSI_CTL_VDW_D16:
829 *dwidth = VME_D16;
830 break;
831 case CA91CX42_LSI_CTL_VDW_D32:
832 *dwidth = VME_D32;
833 break;
834 case CA91CX42_LSI_CTL_VDW_D64:
835 *dwidth = VME_D64;
836 break;
837 }
838
839 return 0;
840 }
841
842 static int ca91cx42_master_get(struct vme_master_resource *image, int *enabled,
843 unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
844 u32 *cycle, u32 *dwidth)
845 {
846 int retval;
847
848 spin_lock(&image->lock);
849
850 retval = __ca91cx42_master_get(image, enabled, vme_base, size, aspace,
851 cycle, dwidth);
852
853 spin_unlock(&image->lock);
854
855 return retval;
856 }
857
858 static ssize_t ca91cx42_master_read(struct vme_master_resource *image,
859 void *buf, size_t count, loff_t offset)
860 {
861 ssize_t retval;
862 void __iomem *addr = image->kern_base + offset;
863 unsigned int done = 0;
864 unsigned int count32;
865
866 if (count == 0)
867 return 0;
868
869 spin_lock(&image->lock);
870
871 /* The following code handles VME address alignment. We cannot use
872 * memcpy_xxx here because it may cut data transfers in to 8-bit
873 * cycles when D16 or D32 cycles are required on the VME bus.
874 * On the other hand, the bridge itself assures that the maximum data
875 * cycle configured for the transfer is used and splits it
876 * automatically for non-aligned addresses, so we don't want the
877 * overhead of needlessly forcing small transfers for the entire cycle.
878 */
879 if ((uintptr_t)addr & 0x1) {
880 *(u8 *)buf = ioread8(addr);
881 done += 1;
882 if (done == count)
883 goto out;
884 }
885 if ((uintptr_t)(addr + done) & 0x2) {
886 if ((count - done) < 2) {
887 *(u8 *)(buf + done) = ioread8(addr + done);
888 done += 1;
889 goto out;
890 } else {
891 *(u16 *)(buf + done) = ioread16(addr + done);
892 done += 2;
893 }
894 }
895
896 count32 = (count - done) & ~0x3;
897 while (done < count32) {
898 *(u32 *)(buf + done) = ioread32(addr + done);
899 done += 4;
900 }
901
902 if ((count - done) & 0x2) {
903 *(u16 *)(buf + done) = ioread16(addr + done);
904 done += 2;
905 }
906 if ((count - done) & 0x1) {
907 *(u8 *)(buf + done) = ioread8(addr + done);
908 done += 1;
909 }
910 out:
911 retval = count;
912 spin_unlock(&image->lock);
913
914 return retval;
915 }
916
917 static ssize_t ca91cx42_master_write(struct vme_master_resource *image,
918 void *buf, size_t count, loff_t offset)
919 {
920 ssize_t retval;
921 void __iomem *addr = image->kern_base + offset;
922 unsigned int done = 0;
923 unsigned int count32;
924
925 if (count == 0)
926 return 0;
927
928 spin_lock(&image->lock);
929
930 /* Here we apply for the same strategy we do in master_read
931 * function in order to assure the correct cycles.
932 */
933 if ((uintptr_t)addr & 0x1) {
934 iowrite8(*(u8 *)buf, addr);
935 done += 1;
936 if (done == count)
937 goto out;
938 }
939 if ((uintptr_t)(addr + done) & 0x2) {
940 if ((count - done) < 2) {
941 iowrite8(*(u8 *)(buf + done), addr + done);
942 done += 1;
943 goto out;
944 } else {
945 iowrite16(*(u16 *)(buf + done), addr + done);
946 done += 2;
947 }
948 }
949
950 count32 = (count - done) & ~0x3;
951 while (done < count32) {
952 iowrite32(*(u32 *)(buf + done), addr + done);
953 done += 4;
954 }
955
956 if ((count - done) & 0x2) {
957 iowrite16(*(u16 *)(buf + done), addr + done);
958 done += 2;
959 }
960 if ((count - done) & 0x1) {
961 iowrite8(*(u8 *)(buf + done), addr + done);
962 done += 1;
963 }
964 out:
965 retval = count;
966
967 spin_unlock(&image->lock);
968
969 return retval;
970 }
971
972 static unsigned int ca91cx42_master_rmw(struct vme_master_resource *image,
973 unsigned int mask, unsigned int compare, unsigned int swap,
974 loff_t offset)
975 {
976 u32 result;
977 uintptr_t pci_addr;
978 int i;
979 struct ca91cx42_driver *bridge;
980 struct device *dev;
981
982 bridge = image->parent->driver_priv;
983 dev = image->parent->parent;
984
985 /* Find the PCI address that maps to the desired VME address */
986 i = image->number;
987
988 /* Locking as we can only do one of these at a time */
989 mutex_lock(&bridge->vme_rmw);
990
991 /* Lock image */
992 spin_lock(&image->lock);
993
994 pci_addr = (uintptr_t)image->kern_base + offset;
995
996 /* Address must be 4-byte aligned */
997 if (pci_addr & 0x3) {
998 dev_err(dev, "RMW Address not 4-byte aligned\n");
999 result = -EINVAL;
1000 goto out;
1001 }
1002
1003 /* Ensure RMW Disabled whilst configuring */
1004 iowrite32(0, bridge->base + SCYC_CTL);
1005
1006 /* Configure registers */
1007 iowrite32(mask, bridge->base + SCYC_EN);
1008 iowrite32(compare, bridge->base + SCYC_CMP);
1009 iowrite32(swap, bridge->base + SCYC_SWP);
1010 iowrite32(pci_addr, bridge->base + SCYC_ADDR);
1011
1012 /* Enable RMW */
1013 iowrite32(CA91CX42_SCYC_CTL_CYC_RMW, bridge->base + SCYC_CTL);
1014
1015 /* Kick process off with a read to the required address. */
1016 result = ioread32(image->kern_base + offset);
1017
1018 /* Disable RMW */
1019 iowrite32(0, bridge->base + SCYC_CTL);
1020
1021 out:
1022 spin_unlock(&image->lock);
1023
1024 mutex_unlock(&bridge->vme_rmw);
1025
1026 return result;
1027 }
1028
1029 static int ca91cx42_dma_list_add(struct vme_dma_list *list,
1030 struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1031 {
1032 struct ca91cx42_dma_entry *entry, *prev;
1033 struct vme_dma_pci *pci_attr;
1034 struct vme_dma_vme *vme_attr;
1035 dma_addr_t desc_ptr;
1036 int retval = 0;
1037 struct device *dev;
1038
1039 dev = list->parent->parent->parent;
1040
1041 /* XXX descriptor must be aligned on 64-bit boundaries */
1042 entry = kmalloc(sizeof(struct ca91cx42_dma_entry), GFP_KERNEL);
1043 if (entry == NULL) {
1044 dev_err(dev, "Failed to allocate memory for dma resource "
1045 "structure\n");
1046 retval = -ENOMEM;
1047 goto err_mem;
1048 }
1049
1050 /* Test descriptor alignment */
1051 if ((unsigned long)&entry->descriptor & CA91CX42_DCPP_M) {
1052 dev_err(dev, "Descriptor not aligned to 16 byte boundary as "
1053 "required: %p\n", &entry->descriptor);
1054 retval = -EINVAL;
1055 goto err_align;
1056 }
1057
1058 memset(&entry->descriptor, 0, sizeof(struct ca91cx42_dma_descriptor));
1059
1060 if (dest->type == VME_DMA_VME) {
1061 entry->descriptor.dctl |= CA91CX42_DCTL_L2V;
1062 vme_attr = dest->private;
1063 pci_attr = src->private;
1064 } else {
1065 vme_attr = src->private;
1066 pci_attr = dest->private;
1067 }
1068
1069 /* Check we can do fulfill required attributes */
1070 if ((vme_attr->aspace & ~(VME_A16 | VME_A24 | VME_A32 | VME_USER1 |
1071 VME_USER2)) != 0) {
1072
1073 dev_err(dev, "Unsupported cycle type\n");
1074 retval = -EINVAL;
1075 goto err_aspace;
1076 }
1077
1078 if ((vme_attr->cycle & ~(VME_SCT | VME_BLT | VME_SUPER | VME_USER |
1079 VME_PROG | VME_DATA)) != 0) {
1080
1081 dev_err(dev, "Unsupported cycle type\n");
1082 retval = -EINVAL;
1083 goto err_cycle;
1084 }
1085
1086 /* Check to see if we can fulfill source and destination */
1087 if (!(((src->type == VME_DMA_PCI) && (dest->type == VME_DMA_VME)) ||
1088 ((src->type == VME_DMA_VME) && (dest->type == VME_DMA_PCI)))) {
1089
1090 dev_err(dev, "Cannot perform transfer with this "
1091 "source-destination combination\n");
1092 retval = -EINVAL;
1093 goto err_direct;
1094 }
1095
1096 /* Setup cycle types */
1097 if (vme_attr->cycle & VME_BLT)
1098 entry->descriptor.dctl |= CA91CX42_DCTL_VCT_BLT;
1099
1100 /* Setup data width */
1101 switch (vme_attr->dwidth) {
1102 case VME_D8:
1103 entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D8;
1104 break;
1105 case VME_D16:
1106 entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D16;
1107 break;
1108 case VME_D32:
1109 entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D32;
1110 break;
1111 case VME_D64:
1112 entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D64;
1113 break;
1114 default:
1115 dev_err(dev, "Invalid data width\n");
1116 return -EINVAL;
1117 }
1118
1119 /* Setup address space */
1120 switch (vme_attr->aspace) {
1121 case VME_A16:
1122 entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A16;
1123 break;
1124 case VME_A24:
1125 entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A24;
1126 break;
1127 case VME_A32:
1128 entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A32;
1129 break;
1130 case VME_USER1:
1131 entry->descriptor.dctl |= CA91CX42_DCTL_VAS_USER1;
1132 break;
1133 case VME_USER2:
1134 entry->descriptor.dctl |= CA91CX42_DCTL_VAS_USER2;
1135 break;
1136 default:
1137 dev_err(dev, "Invalid address space\n");
1138 return -EINVAL;
1139 break;
1140 }
1141
1142 if (vme_attr->cycle & VME_SUPER)
1143 entry->descriptor.dctl |= CA91CX42_DCTL_SUPER_SUPR;
1144 if (vme_attr->cycle & VME_PROG)
1145 entry->descriptor.dctl |= CA91CX42_DCTL_PGM_PGM;
1146
1147 entry->descriptor.dtbc = count;
1148 entry->descriptor.dla = pci_attr->address;
1149 entry->descriptor.dva = vme_attr->address;
1150 entry->descriptor.dcpp = CA91CX42_DCPP_NULL;
1151
1152 /* Add to list */
1153 list_add_tail(&entry->list, &list->entries);
1154
1155 /* Fill out previous descriptors "Next Address" */
1156 if (entry->list.prev != &list->entries) {
1157 prev = list_entry(entry->list.prev, struct ca91cx42_dma_entry,
1158 list);
1159 /* We need the bus address for the pointer */
1160 desc_ptr = virt_to_bus(&entry->descriptor);
1161 prev->descriptor.dcpp = desc_ptr & ~CA91CX42_DCPP_M;
1162 }
1163
1164 return 0;
1165
1166 err_cycle:
1167 err_aspace:
1168 err_direct:
1169 err_align:
1170 kfree(entry);
1171 err_mem:
1172 return retval;
1173 }
1174
1175 static int ca91cx42_dma_busy(struct vme_bridge *ca91cx42_bridge)
1176 {
1177 u32 tmp;
1178 struct ca91cx42_driver *bridge;
1179
1180 bridge = ca91cx42_bridge->driver_priv;
1181
1182 tmp = ioread32(bridge->base + DGCS);
1183
1184 if (tmp & CA91CX42_DGCS_ACT)
1185 return 0;
1186 else
1187 return 1;
1188 }
1189
1190 static int ca91cx42_dma_list_exec(struct vme_dma_list *list)
1191 {
1192 struct vme_dma_resource *ctrlr;
1193 struct ca91cx42_dma_entry *entry;
1194 int retval;
1195 dma_addr_t bus_addr;
1196 u32 val;
1197 struct device *dev;
1198 struct ca91cx42_driver *bridge;
1199
1200 ctrlr = list->parent;
1201
1202 bridge = ctrlr->parent->driver_priv;
1203 dev = ctrlr->parent->parent;
1204
1205 mutex_lock(&ctrlr->mtx);
1206
1207 if (!(list_empty(&ctrlr->running))) {
1208 /*
1209 * XXX We have an active DMA transfer and currently haven't
1210 * sorted out the mechanism for "pending" DMA transfers.
1211 * Return busy.
1212 */
1213 /* Need to add to pending here */
1214 mutex_unlock(&ctrlr->mtx);
1215 return -EBUSY;
1216 } else {
1217 list_add(&list->list, &ctrlr->running);
1218 }
1219
1220 /* Get first bus address and write into registers */
1221 entry = list_first_entry(&list->entries, struct ca91cx42_dma_entry,
1222 list);
1223
1224 bus_addr = virt_to_bus(&entry->descriptor);
1225
1226 mutex_unlock(&ctrlr->mtx);
1227
1228 iowrite32(0, bridge->base + DTBC);
1229 iowrite32(bus_addr & ~CA91CX42_DCPP_M, bridge->base + DCPP);
1230
1231 /* Start the operation */
1232 val = ioread32(bridge->base + DGCS);
1233
1234 /* XXX Could set VMEbus On and Off Counters here */
1235 val &= (CA91CX42_DGCS_VON_M | CA91CX42_DGCS_VOFF_M);
1236
1237 val |= (CA91CX42_DGCS_CHAIN | CA91CX42_DGCS_STOP | CA91CX42_DGCS_HALT |
1238 CA91CX42_DGCS_DONE | CA91CX42_DGCS_LERR | CA91CX42_DGCS_VERR |
1239 CA91CX42_DGCS_PERR);
1240
1241 iowrite32(val, bridge->base + DGCS);
1242
1243 val |= CA91CX42_DGCS_GO;
1244
1245 iowrite32(val, bridge->base + DGCS);
1246
1247 retval = wait_event_interruptible(bridge->dma_queue,
1248 ca91cx42_dma_busy(ctrlr->parent));
1249
1250 if (retval) {
1251 val = ioread32(bridge->base + DGCS);
1252 iowrite32(val | CA91CX42_DGCS_STOP_REQ, bridge->base + DGCS);
1253 /* Wait for the operation to abort */
1254 wait_event(bridge->dma_queue,
1255 ca91cx42_dma_busy(ctrlr->parent));
1256 retval = -EINTR;
1257 goto exit;
1258 }
1259
1260 /*
1261 * Read status register, this register is valid until we kick off a
1262 * new transfer.
1263 */
1264 val = ioread32(bridge->base + DGCS);
1265
1266 if (val & (CA91CX42_DGCS_LERR | CA91CX42_DGCS_VERR |
1267 CA91CX42_DGCS_PERR)) {
1268
1269 dev_err(dev, "ca91c042: DMA Error. DGCS=%08X\n", val);
1270 val = ioread32(bridge->base + DCTL);
1271 retval = -EIO;
1272 }
1273
1274 exit:
1275 /* Remove list from running list */
1276 mutex_lock(&ctrlr->mtx);
1277 list_del(&list->list);
1278 mutex_unlock(&ctrlr->mtx);
1279
1280 return retval;
1281
1282 }
1283
1284 static int ca91cx42_dma_list_empty(struct vme_dma_list *list)
1285 {
1286 struct list_head *pos, *temp;
1287 struct ca91cx42_dma_entry *entry;
1288
1289 /* detach and free each entry */
1290 list_for_each_safe(pos, temp, &list->entries) {
1291 list_del(pos);
1292 entry = list_entry(pos, struct ca91cx42_dma_entry, list);
1293 kfree(entry);
1294 }
1295
1296 return 0;
1297 }
1298
1299 /*
1300 * All 4 location monitors reside at the same base - this is therefore a
1301 * system wide configuration.
1302 *
1303 * This does not enable the LM monitor - that should be done when the first
1304 * callback is attached and disabled when the last callback is removed.
1305 */
1306 static int ca91cx42_lm_set(struct vme_lm_resource *lm,
1307 unsigned long long lm_base, u32 aspace, u32 cycle)
1308 {
1309 u32 temp_base, lm_ctl = 0;
1310 int i;
1311 struct ca91cx42_driver *bridge;
1312 struct device *dev;
1313
1314 bridge = lm->parent->driver_priv;
1315 dev = lm->parent->parent;
1316
1317 /* Check the alignment of the location monitor */
1318 temp_base = (u32)lm_base;
1319 if (temp_base & 0xffff) {
1320 dev_err(dev, "Location monitor must be aligned to 64KB "
1321 "boundary");
1322 return -EINVAL;
1323 }
1324
1325 mutex_lock(&lm->mtx);
1326
1327 /* If we already have a callback attached, we can't move it! */
1328 for (i = 0; i < lm->monitors; i++) {
1329 if (bridge->lm_callback[i] != NULL) {
1330 mutex_unlock(&lm->mtx);
1331 dev_err(dev, "Location monitor callback attached, "
1332 "can't reset\n");
1333 return -EBUSY;
1334 }
1335 }
1336
1337 switch (aspace) {
1338 case VME_A16:
1339 lm_ctl |= CA91CX42_LM_CTL_AS_A16;
1340 break;
1341 case VME_A24:
1342 lm_ctl |= CA91CX42_LM_CTL_AS_A24;
1343 break;
1344 case VME_A32:
1345 lm_ctl |= CA91CX42_LM_CTL_AS_A32;
1346 break;
1347 default:
1348 mutex_unlock(&lm->mtx);
1349 dev_err(dev, "Invalid address space\n");
1350 return -EINVAL;
1351 break;
1352 }
1353
1354 if (cycle & VME_SUPER)
1355 lm_ctl |= CA91CX42_LM_CTL_SUPR;
1356 if (cycle & VME_USER)
1357 lm_ctl |= CA91CX42_LM_CTL_NPRIV;
1358 if (cycle & VME_PROG)
1359 lm_ctl |= CA91CX42_LM_CTL_PGM;
1360 if (cycle & VME_DATA)
1361 lm_ctl |= CA91CX42_LM_CTL_DATA;
1362
1363 iowrite32(lm_base, bridge->base + LM_BS);
1364 iowrite32(lm_ctl, bridge->base + LM_CTL);
1365
1366 mutex_unlock(&lm->mtx);
1367
1368 return 0;
1369 }
1370
1371 /* Get configuration of the callback monitor and return whether it is enabled
1372 * or disabled.
1373 */
1374 static int ca91cx42_lm_get(struct vme_lm_resource *lm,
1375 unsigned long long *lm_base, u32 *aspace, u32 *cycle)
1376 {
1377 u32 lm_ctl, enabled = 0;
1378 struct ca91cx42_driver *bridge;
1379
1380 bridge = lm->parent->driver_priv;
1381
1382 mutex_lock(&lm->mtx);
1383
1384 *lm_base = (unsigned long long)ioread32(bridge->base + LM_BS);
1385 lm_ctl = ioread32(bridge->base + LM_CTL);
1386
1387 if (lm_ctl & CA91CX42_LM_CTL_EN)
1388 enabled = 1;
1389
1390 if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A16)
1391 *aspace = VME_A16;
1392 if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A24)
1393 *aspace = VME_A24;
1394 if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A32)
1395 *aspace = VME_A32;
1396
1397 *cycle = 0;
1398 if (lm_ctl & CA91CX42_LM_CTL_SUPR)
1399 *cycle |= VME_SUPER;
1400 if (lm_ctl & CA91CX42_LM_CTL_NPRIV)
1401 *cycle |= VME_USER;
1402 if (lm_ctl & CA91CX42_LM_CTL_PGM)
1403 *cycle |= VME_PROG;
1404 if (lm_ctl & CA91CX42_LM_CTL_DATA)
1405 *cycle |= VME_DATA;
1406
1407 mutex_unlock(&lm->mtx);
1408
1409 return enabled;
1410 }
1411
1412 /*
1413 * Attach a callback to a specific location monitor.
1414 *
1415 * Callback will be passed the monitor triggered.
1416 */
1417 static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor,
1418 void (*callback)(int))
1419 {
1420 u32 lm_ctl, tmp;
1421 struct ca91cx42_driver *bridge;
1422 struct device *dev;
1423
1424 bridge = lm->parent->driver_priv;
1425 dev = lm->parent->parent;
1426
1427 mutex_lock(&lm->mtx);
1428
1429 /* Ensure that the location monitor is configured - need PGM or DATA */
1430 lm_ctl = ioread32(bridge->base + LM_CTL);
1431 if ((lm_ctl & (CA91CX42_LM_CTL_PGM | CA91CX42_LM_CTL_DATA)) == 0) {
1432 mutex_unlock(&lm->mtx);
1433 dev_err(dev, "Location monitor not properly configured\n");
1434 return -EINVAL;
1435 }
1436
1437 /* Check that a callback isn't already attached */
1438 if (bridge->lm_callback[monitor] != NULL) {
1439 mutex_unlock(&lm->mtx);
1440 dev_err(dev, "Existing callback attached\n");
1441 return -EBUSY;
1442 }
1443
1444 /* Attach callback */
1445 bridge->lm_callback[monitor] = callback;
1446
1447 /* Enable Location Monitor interrupt */
1448 tmp = ioread32(bridge->base + LINT_EN);
1449 tmp |= CA91CX42_LINT_LM[monitor];
1450 iowrite32(tmp, bridge->base + LINT_EN);
1451
1452 /* Ensure that global Location Monitor Enable set */
1453 if ((lm_ctl & CA91CX42_LM_CTL_EN) == 0) {
1454 lm_ctl |= CA91CX42_LM_CTL_EN;
1455 iowrite32(lm_ctl, bridge->base + LM_CTL);
1456 }
1457
1458 mutex_unlock(&lm->mtx);
1459
1460 return 0;
1461 }
1462
1463 /*
1464 * Detach a callback function forn a specific location monitor.
1465 */
1466 static int ca91cx42_lm_detach(struct vme_lm_resource *lm, int monitor)
1467 {
1468 u32 tmp;
1469 struct ca91cx42_driver *bridge;
1470
1471 bridge = lm->parent->driver_priv;
1472
1473 mutex_lock(&lm->mtx);
1474
1475 /* Disable Location Monitor and ensure previous interrupts are clear */
1476 tmp = ioread32(bridge->base + LINT_EN);
1477 tmp &= ~CA91CX42_LINT_LM[monitor];
1478 iowrite32(tmp, bridge->base + LINT_EN);
1479
1480 iowrite32(CA91CX42_LINT_LM[monitor],
1481 bridge->base + LINT_STAT);
1482
1483 /* Detach callback */
1484 bridge->lm_callback[monitor] = NULL;
1485
1486 /* If all location monitors disabled, disable global Location Monitor */
1487 if ((tmp & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 |
1488 CA91CX42_LINT_LM3)) == 0) {
1489 tmp = ioread32(bridge->base + LM_CTL);
1490 tmp &= ~CA91CX42_LM_CTL_EN;
1491 iowrite32(tmp, bridge->base + LM_CTL);
1492 }
1493
1494 mutex_unlock(&lm->mtx);
1495
1496 return 0;
1497 }
1498
1499 static int ca91cx42_slot_get(struct vme_bridge *ca91cx42_bridge)
1500 {
1501 u32 slot = 0;
1502 struct ca91cx42_driver *bridge;
1503
1504 bridge = ca91cx42_bridge->driver_priv;
1505
1506 if (!geoid) {
1507 slot = ioread32(bridge->base + VCSR_BS);
1508 slot = ((slot & CA91CX42_VCSR_BS_SLOT_M) >> 27);
1509 } else
1510 slot = geoid;
1511
1512 return (int)slot;
1513
1514 }
1515
1516 static void *ca91cx42_alloc_consistent(struct device *parent, size_t size,
1517 dma_addr_t *dma)
1518 {
1519 struct pci_dev *pdev;
1520
1521 /* Find pci_dev container of dev */
1522 pdev = container_of(parent, struct pci_dev, dev);
1523
1524 return pci_alloc_consistent(pdev, size, dma);
1525 }
1526
1527 static void ca91cx42_free_consistent(struct device *parent, size_t size,
1528 void *vaddr, dma_addr_t dma)
1529 {
1530 struct pci_dev *pdev;
1531
1532 /* Find pci_dev container of dev */
1533 pdev = container_of(parent, struct pci_dev, dev);
1534
1535 pci_free_consistent(pdev, size, vaddr, dma);
1536 }
1537
1538 /*
1539 * Configure CR/CSR space
1540 *
1541 * Access to the CR/CSR can be configured at power-up. The location of the
1542 * CR/CSR registers in the CR/CSR address space is determined by the boards
1543 * Auto-ID or Geographic address. This function ensures that the window is
1544 * enabled at an offset consistent with the boards geopgraphic address.
1545 */
1546 static int ca91cx42_crcsr_init(struct vme_bridge *ca91cx42_bridge,
1547 struct pci_dev *pdev)
1548 {
1549 unsigned int crcsr_addr;
1550 int tmp, slot;
1551 struct ca91cx42_driver *bridge;
1552
1553 bridge = ca91cx42_bridge->driver_priv;
1554
1555 slot = ca91cx42_slot_get(ca91cx42_bridge);
1556
1557 /* Write CSR Base Address if slot ID is supplied as a module param */
1558 if (geoid)
1559 iowrite32(geoid << 27, bridge->base + VCSR_BS);
1560
1561 dev_info(&pdev->dev, "CR/CSR Offset: %d\n", slot);
1562 if (slot == 0) {
1563 dev_err(&pdev->dev, "Slot number is unset, not configuring "
1564 "CR/CSR space\n");
1565 return -EINVAL;
1566 }
1567
1568 /* Allocate mem for CR/CSR image */
1569 bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
1570 &bridge->crcsr_bus);
1571 if (bridge->crcsr_kernel == NULL) {
1572 dev_err(&pdev->dev, "Failed to allocate memory for CR/CSR "
1573 "image\n");
1574 return -ENOMEM;
1575 }
1576
1577 crcsr_addr = slot * (512 * 1024);
1578 iowrite32(bridge->crcsr_bus - crcsr_addr, bridge->base + VCSR_TO);
1579
1580 tmp = ioread32(bridge->base + VCSR_CTL);
1581 tmp |= CA91CX42_VCSR_CTL_EN;
1582 iowrite32(tmp, bridge->base + VCSR_CTL);
1583
1584 return 0;
1585 }
1586
1587 static void ca91cx42_crcsr_exit(struct vme_bridge *ca91cx42_bridge,
1588 struct pci_dev *pdev)
1589 {
1590 u32 tmp;
1591 struct ca91cx42_driver *bridge;
1592
1593 bridge = ca91cx42_bridge->driver_priv;
1594
1595 /* Turn off CR/CSR space */
1596 tmp = ioread32(bridge->base + VCSR_CTL);
1597 tmp &= ~CA91CX42_VCSR_CTL_EN;
1598 iowrite32(tmp, bridge->base + VCSR_CTL);
1599
1600 /* Free image */
1601 iowrite32(0, bridge->base + VCSR_TO);
1602
1603 pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
1604 bridge->crcsr_bus);
1605 }
1606
1607 static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1608 {
1609 int retval, i;
1610 u32 data;
1611 struct list_head *pos = NULL, *n;
1612 struct vme_bridge *ca91cx42_bridge;
1613 struct ca91cx42_driver *ca91cx42_device;
1614 struct vme_master_resource *master_image;
1615 struct vme_slave_resource *slave_image;
1616 struct vme_dma_resource *dma_ctrlr;
1617 struct vme_lm_resource *lm;
1618
1619 /* We want to support more than one of each bridge so we need to
1620 * dynamically allocate the bridge structure
1621 */
1622 ca91cx42_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
1623
1624 if (ca91cx42_bridge == NULL) {
1625 dev_err(&pdev->dev, "Failed to allocate memory for device "
1626 "structure\n");
1627 retval = -ENOMEM;
1628 goto err_struct;
1629 }
1630
1631 ca91cx42_device = kzalloc(sizeof(struct ca91cx42_driver), GFP_KERNEL);
1632
1633 if (ca91cx42_device == NULL) {
1634 dev_err(&pdev->dev, "Failed to allocate memory for device "
1635 "structure\n");
1636 retval = -ENOMEM;
1637 goto err_driver;
1638 }
1639
1640 ca91cx42_bridge->driver_priv = ca91cx42_device;
1641
1642 /* Enable the device */
1643 retval = pci_enable_device(pdev);
1644 if (retval) {
1645 dev_err(&pdev->dev, "Unable to enable device\n");
1646 goto err_enable;
1647 }
1648
1649 /* Map Registers */
1650 retval = pci_request_regions(pdev, driver_name);
1651 if (retval) {
1652 dev_err(&pdev->dev, "Unable to reserve resources\n");
1653 goto err_resource;
1654 }
1655
1656 /* map registers in BAR 0 */
1657 ca91cx42_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
1658 4096);
1659 if (!ca91cx42_device->base) {
1660 dev_err(&pdev->dev, "Unable to remap CRG region\n");
1661 retval = -EIO;
1662 goto err_remap;
1663 }
1664
1665 /* Check to see if the mapping worked out */
1666 data = ioread32(ca91cx42_device->base + CA91CX42_PCI_ID) & 0x0000FFFF;
1667 if (data != PCI_VENDOR_ID_TUNDRA) {
1668 dev_err(&pdev->dev, "PCI_ID check failed\n");
1669 retval = -EIO;
1670 goto err_test;
1671 }
1672
1673 /* Initialize wait queues & mutual exclusion flags */
1674 init_waitqueue_head(&ca91cx42_device->dma_queue);
1675 init_waitqueue_head(&ca91cx42_device->iack_queue);
1676 mutex_init(&ca91cx42_device->vme_int);
1677 mutex_init(&ca91cx42_device->vme_rmw);
1678
1679 ca91cx42_bridge->parent = &pdev->dev;
1680 strcpy(ca91cx42_bridge->name, driver_name);
1681
1682 /* Setup IRQ */
1683 retval = ca91cx42_irq_init(ca91cx42_bridge);
1684 if (retval != 0) {
1685 dev_err(&pdev->dev, "Chip Initialization failed.\n");
1686 goto err_irq;
1687 }
1688
1689 /* Add master windows to list */
1690 INIT_LIST_HEAD(&ca91cx42_bridge->master_resources);
1691 for (i = 0; i < CA91C142_MAX_MASTER; i++) {
1692 master_image = kmalloc(sizeof(struct vme_master_resource),
1693 GFP_KERNEL);
1694 if (master_image == NULL) {
1695 dev_err(&pdev->dev, "Failed to allocate memory for "
1696 "master resource structure\n");
1697 retval = -ENOMEM;
1698 goto err_master;
1699 }
1700 master_image->parent = ca91cx42_bridge;
1701 spin_lock_init(&master_image->lock);
1702 master_image->locked = 0;
1703 master_image->number = i;
1704 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
1705 VME_CRCSR | VME_USER1 | VME_USER2;
1706 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
1707 VME_SUPER | VME_USER | VME_PROG | VME_DATA;
1708 master_image->width_attr = VME_D8 | VME_D16 | VME_D32 | VME_D64;
1709 memset(&master_image->bus_resource, 0,
1710 sizeof(struct resource));
1711 master_image->kern_base = NULL;
1712 list_add_tail(&master_image->list,
1713 &ca91cx42_bridge->master_resources);
1714 }
1715
1716 /* Add slave windows to list */
1717 INIT_LIST_HEAD(&ca91cx42_bridge->slave_resources);
1718 for (i = 0; i < CA91C142_MAX_SLAVE; i++) {
1719 slave_image = kmalloc(sizeof(struct vme_slave_resource),
1720 GFP_KERNEL);
1721 if (slave_image == NULL) {
1722 dev_err(&pdev->dev, "Failed to allocate memory for "
1723 "slave resource structure\n");
1724 retval = -ENOMEM;
1725 goto err_slave;
1726 }
1727 slave_image->parent = ca91cx42_bridge;
1728 mutex_init(&slave_image->mtx);
1729 slave_image->locked = 0;
1730 slave_image->number = i;
1731 slave_image->address_attr = VME_A24 | VME_A32 | VME_USER1 |
1732 VME_USER2;
1733
1734 /* Only windows 0 and 4 support A16 */
1735 if (i == 0 || i == 4)
1736 slave_image->address_attr |= VME_A16;
1737
1738 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
1739 VME_SUPER | VME_USER | VME_PROG | VME_DATA;
1740 list_add_tail(&slave_image->list,
1741 &ca91cx42_bridge->slave_resources);
1742 }
1743
1744 /* Add dma engines to list */
1745 INIT_LIST_HEAD(&ca91cx42_bridge->dma_resources);
1746 for (i = 0; i < CA91C142_MAX_DMA; i++) {
1747 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
1748 GFP_KERNEL);
1749 if (dma_ctrlr == NULL) {
1750 dev_err(&pdev->dev, "Failed to allocate memory for "
1751 "dma resource structure\n");
1752 retval = -ENOMEM;
1753 goto err_dma;
1754 }
1755 dma_ctrlr->parent = ca91cx42_bridge;
1756 mutex_init(&dma_ctrlr->mtx);
1757 dma_ctrlr->locked = 0;
1758 dma_ctrlr->number = i;
1759 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
1760 VME_DMA_MEM_TO_VME;
1761 INIT_LIST_HEAD(&dma_ctrlr->pending);
1762 INIT_LIST_HEAD(&dma_ctrlr->running);
1763 list_add_tail(&dma_ctrlr->list,
1764 &ca91cx42_bridge->dma_resources);
1765 }
1766
1767 /* Add location monitor to list */
1768 INIT_LIST_HEAD(&ca91cx42_bridge->lm_resources);
1769 lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
1770 if (lm == NULL) {
1771 dev_err(&pdev->dev, "Failed to allocate memory for "
1772 "location monitor resource structure\n");
1773 retval = -ENOMEM;
1774 goto err_lm;
1775 }
1776 lm->parent = ca91cx42_bridge;
1777 mutex_init(&lm->mtx);
1778 lm->locked = 0;
1779 lm->number = 1;
1780 lm->monitors = 4;
1781 list_add_tail(&lm->list, &ca91cx42_bridge->lm_resources);
1782
1783 ca91cx42_bridge->slave_get = ca91cx42_slave_get;
1784 ca91cx42_bridge->slave_set = ca91cx42_slave_set;
1785 ca91cx42_bridge->master_get = ca91cx42_master_get;
1786 ca91cx42_bridge->master_set = ca91cx42_master_set;
1787 ca91cx42_bridge->master_read = ca91cx42_master_read;
1788 ca91cx42_bridge->master_write = ca91cx42_master_write;
1789 ca91cx42_bridge->master_rmw = ca91cx42_master_rmw;
1790 ca91cx42_bridge->dma_list_add = ca91cx42_dma_list_add;
1791 ca91cx42_bridge->dma_list_exec = ca91cx42_dma_list_exec;
1792 ca91cx42_bridge->dma_list_empty = ca91cx42_dma_list_empty;
1793 ca91cx42_bridge->irq_set = ca91cx42_irq_set;
1794 ca91cx42_bridge->irq_generate = ca91cx42_irq_generate;
1795 ca91cx42_bridge->lm_set = ca91cx42_lm_set;
1796 ca91cx42_bridge->lm_get = ca91cx42_lm_get;
1797 ca91cx42_bridge->lm_attach = ca91cx42_lm_attach;
1798 ca91cx42_bridge->lm_detach = ca91cx42_lm_detach;
1799 ca91cx42_bridge->slot_get = ca91cx42_slot_get;
1800 ca91cx42_bridge->alloc_consistent = ca91cx42_alloc_consistent;
1801 ca91cx42_bridge->free_consistent = ca91cx42_free_consistent;
1802
1803 data = ioread32(ca91cx42_device->base + MISC_CTL);
1804 dev_info(&pdev->dev, "Board is%s the VME system controller\n",
1805 (data & CA91CX42_MISC_CTL_SYSCON) ? "" : " not");
1806 dev_info(&pdev->dev, "Slot ID is %d\n",
1807 ca91cx42_slot_get(ca91cx42_bridge));
1808
1809 if (ca91cx42_crcsr_init(ca91cx42_bridge, pdev))
1810 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
1811
1812 /* Need to save ca91cx42_bridge pointer locally in link list for use in
1813 * ca91cx42_remove()
1814 */
1815 retval = vme_register_bridge(ca91cx42_bridge);
1816 if (retval != 0) {
1817 dev_err(&pdev->dev, "Chip Registration failed.\n");
1818 goto err_reg;
1819 }
1820
1821 pci_set_drvdata(pdev, ca91cx42_bridge);
1822
1823 return 0;
1824
1825 err_reg:
1826 ca91cx42_crcsr_exit(ca91cx42_bridge, pdev);
1827 err_lm:
1828 /* resources are stored in link list */
1829 list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) {
1830 lm = list_entry(pos, struct vme_lm_resource, list);
1831 list_del(pos);
1832 kfree(lm);
1833 }
1834 err_dma:
1835 /* resources are stored in link list */
1836 list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) {
1837 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
1838 list_del(pos);
1839 kfree(dma_ctrlr);
1840 }
1841 err_slave:
1842 /* resources are stored in link list */
1843 list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) {
1844 slave_image = list_entry(pos, struct vme_slave_resource, list);
1845 list_del(pos);
1846 kfree(slave_image);
1847 }
1848 err_master:
1849 /* resources are stored in link list */
1850 list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) {
1851 master_image = list_entry(pos, struct vme_master_resource,
1852 list);
1853 list_del(pos);
1854 kfree(master_image);
1855 }
1856
1857 ca91cx42_irq_exit(ca91cx42_device, pdev);
1858 err_irq:
1859 err_test:
1860 iounmap(ca91cx42_device->base);
1861 err_remap:
1862 pci_release_regions(pdev);
1863 err_resource:
1864 pci_disable_device(pdev);
1865 err_enable:
1866 kfree(ca91cx42_device);
1867 err_driver:
1868 kfree(ca91cx42_bridge);
1869 err_struct:
1870 return retval;
1871
1872 }
1873
1874 static void ca91cx42_remove(struct pci_dev *pdev)
1875 {
1876 struct list_head *pos = NULL, *n;
1877 struct vme_master_resource *master_image;
1878 struct vme_slave_resource *slave_image;
1879 struct vme_dma_resource *dma_ctrlr;
1880 struct vme_lm_resource *lm;
1881 struct ca91cx42_driver *bridge;
1882 struct vme_bridge *ca91cx42_bridge = pci_get_drvdata(pdev);
1883
1884 bridge = ca91cx42_bridge->driver_priv;
1885
1886
1887 /* Turn off Ints */
1888 iowrite32(0, bridge->base + LINT_EN);
1889
1890 /* Turn off the windows */
1891 iowrite32(0x00800000, bridge->base + LSI0_CTL);
1892 iowrite32(0x00800000, bridge->base + LSI1_CTL);
1893 iowrite32(0x00800000, bridge->base + LSI2_CTL);
1894 iowrite32(0x00800000, bridge->base + LSI3_CTL);
1895 iowrite32(0x00800000, bridge->base + LSI4_CTL);
1896 iowrite32(0x00800000, bridge->base + LSI5_CTL);
1897 iowrite32(0x00800000, bridge->base + LSI6_CTL);
1898 iowrite32(0x00800000, bridge->base + LSI7_CTL);
1899 iowrite32(0x00F00000, bridge->base + VSI0_CTL);
1900 iowrite32(0x00F00000, bridge->base + VSI1_CTL);
1901 iowrite32(0x00F00000, bridge->base + VSI2_CTL);
1902 iowrite32(0x00F00000, bridge->base + VSI3_CTL);
1903 iowrite32(0x00F00000, bridge->base + VSI4_CTL);
1904 iowrite32(0x00F00000, bridge->base + VSI5_CTL);
1905 iowrite32(0x00F00000, bridge->base + VSI6_CTL);
1906 iowrite32(0x00F00000, bridge->base + VSI7_CTL);
1907
1908 vme_unregister_bridge(ca91cx42_bridge);
1909
1910 ca91cx42_crcsr_exit(ca91cx42_bridge, pdev);
1911
1912 /* resources are stored in link list */
1913 list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) {
1914 lm = list_entry(pos, struct vme_lm_resource, list);
1915 list_del(pos);
1916 kfree(lm);
1917 }
1918
1919 /* resources are stored in link list */
1920 list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) {
1921 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
1922 list_del(pos);
1923 kfree(dma_ctrlr);
1924 }
1925
1926 /* resources are stored in link list */
1927 list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) {
1928 slave_image = list_entry(pos, struct vme_slave_resource, list);
1929 list_del(pos);
1930 kfree(slave_image);
1931 }
1932
1933 /* resources are stored in link list */
1934 list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) {
1935 master_image = list_entry(pos, struct vme_master_resource,
1936 list);
1937 list_del(pos);
1938 kfree(master_image);
1939 }
1940
1941 ca91cx42_irq_exit(bridge, pdev);
1942
1943 iounmap(bridge->base);
1944
1945 pci_release_regions(pdev);
1946
1947 pci_disable_device(pdev);
1948
1949 kfree(ca91cx42_bridge);
1950 }
1951
1952 module_pci_driver(ca91cx42_driver);
1953
1954 MODULE_PARM_DESC(geoid, "Override geographical addressing");
1955 module_param(geoid, int, 0);
1956
1957 MODULE_DESCRIPTION("VME driver for the Tundra Universe II VME bridge");
1958 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.125507 seconds and 5 git commands to generate.