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staging: vme: style: convert '&(foo)' to '&foo'
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / vme / bridges / vme_tsi148.c
blob1cba1fa160790411027a753ab80255c759b5f58c
1 /*
2 * Support for the Tundra TSI148 VME-PCI Bridge Chip
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 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/mm.h>
19 #include <linux/types.h>
20 #include <linux/errno.h>
21 #include <linux/proc_fs.h>
22 #include <linux/pci.h>
23 #include <linux/poll.h>
24 #include <linux/dma-mapping.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
33 #include "../vme.h"
34 #include "../vme_bridge.h"
35 #include "vme_tsi148.h"
36
37 static int __init tsi148_init(void);
38 static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
39 static void tsi148_remove(struct pci_dev *);
40 static void __exit tsi148_exit(void);
41
42
43 /* Module parameter */
44 static int err_chk;
45 static int geoid;
46
47 static char driver_name[] = "vme_tsi148";
48
49 static const struct pci_device_id tsi148_ids[] = {
50 { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
51 { },
52 };
53
54 static struct pci_driver tsi148_driver = {
55 .name = driver_name,
56 .id_table = tsi148_ids,
57 .probe = tsi148_probe,
58 .remove = tsi148_remove,
59 };
60
61 static void reg_join(unsigned int high, unsigned int low,
62 unsigned long long *variable)
63 {
64 *variable = (unsigned long long)high << 32;
65 *variable |= (unsigned long long)low;
66 }
67
68 static void reg_split(unsigned long long variable, unsigned int *high,
69 unsigned int *low)
70 {
71 *low = (unsigned int)variable & 0xFFFFFFFF;
72 *high = (unsigned int)(variable >> 32);
73 }
74
75 /*
76 * Wakes up DMA queue.
77 */
78 static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
79 int channel_mask)
80 {
81 u32 serviced = 0;
82
83 if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
84 wake_up(&bridge->dma_queue[0]);
85 serviced |= TSI148_LCSR_INTC_DMA0C;
86 }
87 if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
88 wake_up(&bridge->dma_queue[1]);
89 serviced |= TSI148_LCSR_INTC_DMA1C;
90 }
91
92 return serviced;
93 }
94
95 /*
96 * Wake up location monitor queue
97 */
98 static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
99 {
100 int i;
101 u32 serviced = 0;
102
103 for (i = 0; i < 4; i++) {
104 if (stat & TSI148_LCSR_INTS_LMS[i]) {
105 /* We only enable interrupts if the callback is set */
106 bridge->lm_callback[i](i);
107 serviced |= TSI148_LCSR_INTC_LMC[i];
108 }
109 }
110
111 return serviced;
112 }
113
114 /*
115 * Wake up mail box queue.
116 *
117 * XXX This functionality is not exposed up though API.
118 */
119 static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
120 {
121 int i;
122 u32 val;
123 u32 serviced = 0;
124 struct tsi148_driver *bridge;
125
126 bridge = tsi148_bridge->driver_priv;
127
128 for (i = 0; i < 4; i++) {
129 if (stat & TSI148_LCSR_INTS_MBS[i]) {
130 val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
131 dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
132 ": 0x%x\n", i, val);
133 serviced |= TSI148_LCSR_INTC_MBC[i];
134 }
135 }
136
137 return serviced;
138 }
139
140 /*
141 * Display error & status message when PERR (PCI) exception interrupt occurs.
142 */
143 static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
144 {
145 struct tsi148_driver *bridge;
146
147 bridge = tsi148_bridge->driver_priv;
148
149 dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
150 "attributes: %08x\n",
151 ioread32be(bridge->base + TSI148_LCSR_EDPAU),
152 ioread32be(bridge->base + TSI148_LCSR_EDPAL),
153 ioread32be(bridge->base + TSI148_LCSR_EDPAT));
154
155 dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
156 "completion reg: %08x\n",
157 ioread32be(bridge->base + TSI148_LCSR_EDPXA),
158 ioread32be(bridge->base + TSI148_LCSR_EDPXS));
159
160 iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
161
162 return TSI148_LCSR_INTC_PERRC;
163 }
164
165 /*
166 * Save address and status when VME error interrupt occurs.
167 */
168 static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
169 {
170 unsigned int error_addr_high, error_addr_low;
171 unsigned long long error_addr;
172 u32 error_attrib;
173 struct vme_bus_error *error;
174 struct tsi148_driver *bridge;
175
176 bridge = tsi148_bridge->driver_priv;
177
178 error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
179 error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
180 error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
181
182 reg_join(error_addr_high, error_addr_low, &error_addr);
183
184 /* Check for exception register overflow (we have lost error data) */
185 if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
186 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
187 "Occurred\n");
188 }
189
190 error = kmalloc(sizeof(struct vme_bus_error), GFP_ATOMIC);
191 if (error) {
192 error->address = error_addr;
193 error->attributes = error_attrib;
194 list_add_tail(&error->list, &tsi148_bridge->vme_errors);
195 } else {
196 dev_err(tsi148_bridge->parent, "Unable to alloc memory for "
197 "VMEbus Error reporting\n");
198 dev_err(tsi148_bridge->parent, "VME Bus Error at address: "
199 "0x%llx, attributes: %08x\n", error_addr, error_attrib);
200 }
201
202 /* Clear Status */
203 iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
204
205 return TSI148_LCSR_INTC_VERRC;
206 }
207
208 /*
209 * Wake up IACK queue.
210 */
211 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
212 {
213 wake_up(&bridge->iack_queue);
214
215 return TSI148_LCSR_INTC_IACKC;
216 }
217
218 /*
219 * Calling VME bus interrupt callback if provided.
220 */
221 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
222 u32 stat)
223 {
224 int vec, i, serviced = 0;
225 struct tsi148_driver *bridge;
226
227 bridge = tsi148_bridge->driver_priv;
228
229 for (i = 7; i > 0; i--) {
230 if (stat & (1 << i)) {
231 /*
232 * Note: Even though the registers are defined as
233 * 32-bits in the spec, we only want to issue 8-bit
234 * IACK cycles on the bus, read from offset 3.
235 */
236 vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
237
238 vme_irq_handler(tsi148_bridge, i, vec);
239
240 serviced |= (1 << i);
241 }
242 }
243
244 return serviced;
245 }
246
247 /*
248 * Top level interrupt handler. Clears appropriate interrupt status bits and
249 * then calls appropriate sub handler(s).
250 */
251 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
252 {
253 u32 stat, enable, serviced = 0;
254 struct vme_bridge *tsi148_bridge;
255 struct tsi148_driver *bridge;
256
257 tsi148_bridge = ptr;
258
259 bridge = tsi148_bridge->driver_priv;
260
261 /* Determine which interrupts are unmasked and set */
262 enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
263 stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
264
265 /* Only look at unmasked interrupts */
266 stat &= enable;
267
268 if (unlikely(!stat))
269 return IRQ_NONE;
270
271 /* Call subhandlers as appropriate */
272 /* DMA irqs */
273 if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
274 serviced |= tsi148_DMA_irqhandler(bridge, stat);
275
276 /* Location monitor irqs */
277 if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
278 TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
279 serviced |= tsi148_LM_irqhandler(bridge, stat);
280
281 /* Mail box irqs */
282 if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
283 TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
284 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
285
286 /* PCI bus error */
287 if (stat & TSI148_LCSR_INTS_PERRS)
288 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
289
290 /* VME bus error */
291 if (stat & TSI148_LCSR_INTS_VERRS)
292 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
293
294 /* IACK irq */
295 if (stat & TSI148_LCSR_INTS_IACKS)
296 serviced |= tsi148_IACK_irqhandler(bridge);
297
298 /* VME bus irqs */
299 if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
300 TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
301 TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
302 TSI148_LCSR_INTS_IRQ1S))
303 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
304
305 /* Clear serviced interrupts */
306 iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
307
308 return IRQ_HANDLED;
309 }
310
311 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
312 {
313 int result;
314 unsigned int tmp;
315 struct pci_dev *pdev;
316 struct tsi148_driver *bridge;
317
318 pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
319
320 bridge = tsi148_bridge->driver_priv;
321
322 /* Initialise list for VME bus errors */
323 INIT_LIST_HEAD(&tsi148_bridge->vme_errors);
324
325 mutex_init(&tsi148_bridge->irq_mtx);
326
327 result = request_irq(pdev->irq,
328 tsi148_irqhandler,
329 IRQF_SHARED,
330 driver_name, tsi148_bridge);
331 if (result) {
332 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
333 "vector %02X\n", pdev->irq);
334 return result;
335 }
336
337 /* Enable and unmask interrupts */
338 tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
339 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
340 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
341 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
342 TSI148_LCSR_INTEO_IACKEO;
343
344 /* This leaves the following interrupts masked.
345 * TSI148_LCSR_INTEO_VIEEO
346 * TSI148_LCSR_INTEO_SYSFLEO
347 * TSI148_LCSR_INTEO_ACFLEO
348 */
349
350 /* Don't enable Location Monitor interrupts here - they will be
351 * enabled when the location monitors are properly configured and
352 * a callback has been attached.
353 * TSI148_LCSR_INTEO_LM0EO
354 * TSI148_LCSR_INTEO_LM1EO
355 * TSI148_LCSR_INTEO_LM2EO
356 * TSI148_LCSR_INTEO_LM3EO
357 */
358
359 /* Don't enable VME interrupts until we add a handler, else the board
360 * will respond to it and we don't want that unless it knows how to
361 * properly deal with it.
362 * TSI148_LCSR_INTEO_IRQ7EO
363 * TSI148_LCSR_INTEO_IRQ6EO
364 * TSI148_LCSR_INTEO_IRQ5EO
365 * TSI148_LCSR_INTEO_IRQ4EO
366 * TSI148_LCSR_INTEO_IRQ3EO
367 * TSI148_LCSR_INTEO_IRQ2EO
368 * TSI148_LCSR_INTEO_IRQ1EO
369 */
370
371 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
372 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
373
374 return 0;
375 }
376
377 static void tsi148_irq_exit(struct tsi148_driver *bridge, struct pci_dev *pdev)
378 {
379 /* Turn off interrupts */
380 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
381 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
382
383 /* Clear all interrupts */
384 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
385
386 /* Detach interrupt handler */
387 free_irq(pdev->irq, pdev);
388 }
389
390 /*
391 * Check to see if an IACk has been received, return true (1) or false (0).
392 */
393 int tsi148_iack_received(struct tsi148_driver *bridge)
394 {
395 u32 tmp;
396
397 tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
398
399 if (tmp & TSI148_LCSR_VICR_IRQS)
400 return 0;
401 else
402 return 1;
403 }
404
405 /*
406 * Configure VME interrupt
407 */
408 void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
409 int state, int sync)
410 {
411 struct pci_dev *pdev;
412 u32 tmp;
413 struct tsi148_driver *bridge;
414
415 bridge = tsi148_bridge->driver_priv;
416
417 /* We need to do the ordering differently for enabling and disabling */
418 if (state == 0) {
419 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
420 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
421 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
422
423 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
424 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
425 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
426
427 if (sync != 0) {
428 pdev = container_of(tsi148_bridge->parent,
429 struct pci_dev, dev);
430
431 synchronize_irq(pdev->irq);
432 }
433 } else {
434 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
435 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
436 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
437
438 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
439 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
440 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
441 }
442 }
443
444 /*
445 * Generate a VME bus interrupt at the requested level & vector. Wait for
446 * interrupt to be acked.
447 */
448 int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level, int statid)
449 {
450 u32 tmp;
451 struct tsi148_driver *bridge;
452
453 bridge = tsi148_bridge->driver_priv;
454
455 mutex_lock(&bridge->vme_int);
456
457 /* Read VICR register */
458 tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
459
460 /* Set Status/ID */
461 tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
462 (statid & TSI148_LCSR_VICR_STID_M);
463 iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
464
465 /* Assert VMEbus IRQ */
466 tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
467 iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
468
469 /* XXX Consider implementing a timeout? */
470 wait_event_interruptible(bridge->iack_queue,
471 tsi148_iack_received(bridge));
472
473 mutex_unlock(&bridge->vme_int);
474
475 return 0;
476 }
477
478 /*
479 * Find the first error in this address range
480 */
481 static struct vme_bus_error *tsi148_find_error(struct vme_bridge *tsi148_bridge,
482 vme_address_t aspace, unsigned long long address, size_t count)
483 {
484 struct list_head *err_pos;
485 struct vme_bus_error *vme_err, *valid = NULL;
486 unsigned long long bound;
487
488 bound = address + count;
489
490 /*
491 * XXX We are currently not looking at the address space when parsing
492 * for errors. This is because parsing the Address Modifier Codes
493 * is going to be quite resource intensive to do properly. We
494 * should be OK just looking at the addresses and this is certainly
495 * much better than what we had before.
496 */
497 err_pos = NULL;
498 /* Iterate through errors */
499 list_for_each(err_pos, &tsi148_bridge->vme_errors) {
500 vme_err = list_entry(err_pos, struct vme_bus_error, list);
501 if ((vme_err->address >= address) &&
502 (vme_err->address < bound)) {
503
504 valid = vme_err;
505 break;
506 }
507 }
508
509 return valid;
510 }
511
512 /*
513 * Clear errors in the provided address range.
514 */
515 static void tsi148_clear_errors(struct vme_bridge *tsi148_bridge,
516 vme_address_t aspace, unsigned long long address, size_t count)
517 {
518 struct list_head *err_pos, *temp;
519 struct vme_bus_error *vme_err;
520 unsigned long long bound;
521
522 bound = address + count;
523
524 /*
525 * XXX We are currently not looking at the address space when parsing
526 * for errors. This is because parsing the Address Modifier Codes
527 * is going to be quite resource intensive to do properly. We
528 * should be OK just looking at the addresses and this is certainly
529 * much better than what we had before.
530 */
531 err_pos = NULL;
532 /* Iterate through errors */
533 list_for_each_safe(err_pos, temp, &tsi148_bridge->vme_errors) {
534 vme_err = list_entry(err_pos, struct vme_bus_error, list);
535
536 if ((vme_err->address >= address) &&
537 (vme_err->address < bound)) {
538
539 list_del(err_pos);
540 kfree(vme_err);
541 }
542 }
543 }
544
545 /*
546 * Initialize a slave window with the requested attributes.
547 */
548 int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
549 unsigned long long vme_base, unsigned long long size,
550 dma_addr_t pci_base, vme_address_t aspace, vme_cycle_t cycle)
551 {
552 unsigned int i, addr = 0, granularity = 0;
553 unsigned int temp_ctl = 0;
554 unsigned int vme_base_low, vme_base_high;
555 unsigned int vme_bound_low, vme_bound_high;
556 unsigned int pci_offset_low, pci_offset_high;
557 unsigned long long vme_bound, pci_offset;
558 struct vme_bridge *tsi148_bridge;
559 struct tsi148_driver *bridge;
560
561 tsi148_bridge = image->parent;
562 bridge = tsi148_bridge->driver_priv;
563
564 i = image->number;
565
566 switch (aspace) {
567 case VME_A16:
568 granularity = 0x10;
569 addr |= TSI148_LCSR_ITAT_AS_A16;
570 break;
571 case VME_A24:
572 granularity = 0x1000;
573 addr |= TSI148_LCSR_ITAT_AS_A24;
574 break;
575 case VME_A32:
576 granularity = 0x10000;
577 addr |= TSI148_LCSR_ITAT_AS_A32;
578 break;
579 case VME_A64:
580 granularity = 0x10000;
581 addr |= TSI148_LCSR_ITAT_AS_A64;
582 break;
583 case VME_CRCSR:
584 case VME_USER1:
585 case VME_USER2:
586 case VME_USER3:
587 case VME_USER4:
588 default:
589 dev_err(tsi148_bridge->parent, "Invalid address space\n");
590 return -EINVAL;
591 break;
592 }
593
594 /* Convert 64-bit variables to 2x 32-bit variables */
595 reg_split(vme_base, &vme_base_high, &vme_base_low);
596
597 /*
598 * Bound address is a valid address for the window, adjust
599 * accordingly
600 */
601 vme_bound = vme_base + size - granularity;
602 reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
603 pci_offset = (unsigned long long)pci_base - vme_base;
604 reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
605
606 if (vme_base_low & (granularity - 1)) {
607 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
608 return -EINVAL;
609 }
610 if (vme_bound_low & (granularity - 1)) {
611 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
612 return -EINVAL;
613 }
614 if (pci_offset_low & (granularity - 1)) {
615 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
616 "alignment\n");
617 return -EINVAL;
618 }
619
620 /* Disable while we are mucking around */
621 temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
622 TSI148_LCSR_OFFSET_ITAT);
623 temp_ctl &= ~TSI148_LCSR_ITAT_EN;
624 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
625 TSI148_LCSR_OFFSET_ITAT);
626
627 /* Setup mapping */
628 iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
629 TSI148_LCSR_OFFSET_ITSAU);
630 iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
631 TSI148_LCSR_OFFSET_ITSAL);
632 iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
633 TSI148_LCSR_OFFSET_ITEAU);
634 iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
635 TSI148_LCSR_OFFSET_ITEAL);
636 iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
637 TSI148_LCSR_OFFSET_ITOFU);
638 iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
639 TSI148_LCSR_OFFSET_ITOFL);
640
641 /* Setup 2eSST speeds */
642 temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
643 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
644 case VME_2eSST160:
645 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
646 break;
647 case VME_2eSST267:
648 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
649 break;
650 case VME_2eSST320:
651 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
652 break;
653 }
654
655 /* Setup cycle types */
656 temp_ctl &= ~(0x1F << 7);
657 if (cycle & VME_BLT)
658 temp_ctl |= TSI148_LCSR_ITAT_BLT;
659 if (cycle & VME_MBLT)
660 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
661 if (cycle & VME_2eVME)
662 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
663 if (cycle & VME_2eSST)
664 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
665 if (cycle & VME_2eSSTB)
666 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
667
668 /* Setup address space */
669 temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
670 temp_ctl |= addr;
671
672 temp_ctl &= ~0xF;
673 if (cycle & VME_SUPER)
674 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
675 if (cycle & VME_USER)
676 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
677 if (cycle & VME_PROG)
678 temp_ctl |= TSI148_LCSR_ITAT_PGM;
679 if (cycle & VME_DATA)
680 temp_ctl |= TSI148_LCSR_ITAT_DATA;
681
682 /* Write ctl reg without enable */
683 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
684 TSI148_LCSR_OFFSET_ITAT);
685
686 if (enabled)
687 temp_ctl |= TSI148_LCSR_ITAT_EN;
688
689 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
690 TSI148_LCSR_OFFSET_ITAT);
691
692 return 0;
693 }
694
695 /*
696 * Get slave window configuration.
697 */
698 int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
699 unsigned long long *vme_base, unsigned long long *size,
700 dma_addr_t *pci_base, vme_address_t *aspace, vme_cycle_t *cycle)
701 {
702 unsigned int i, granularity = 0, ctl = 0;
703 unsigned int vme_base_low, vme_base_high;
704 unsigned int vme_bound_low, vme_bound_high;
705 unsigned int pci_offset_low, pci_offset_high;
706 unsigned long long vme_bound, pci_offset;
707 struct tsi148_driver *bridge;
708
709 bridge = image->parent->driver_priv;
710
711 i = image->number;
712
713 /* Read registers */
714 ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
715 TSI148_LCSR_OFFSET_ITAT);
716
717 vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
718 TSI148_LCSR_OFFSET_ITSAU);
719 vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
720 TSI148_LCSR_OFFSET_ITSAL);
721 vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
722 TSI148_LCSR_OFFSET_ITEAU);
723 vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
724 TSI148_LCSR_OFFSET_ITEAL);
725 pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
726 TSI148_LCSR_OFFSET_ITOFU);
727 pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
728 TSI148_LCSR_OFFSET_ITOFL);
729
730 /* Convert 64-bit variables to 2x 32-bit variables */
731 reg_join(vme_base_high, vme_base_low, vme_base);
732 reg_join(vme_bound_high, vme_bound_low, &vme_bound);
733 reg_join(pci_offset_high, pci_offset_low, &pci_offset);
734
735 *pci_base = (dma_addr_t)vme_base + pci_offset;
736
737 *enabled = 0;
738 *aspace = 0;
739 *cycle = 0;
740
741 if (ctl & TSI148_LCSR_ITAT_EN)
742 *enabled = 1;
743
744 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
745 granularity = 0x10;
746 *aspace |= VME_A16;
747 }
748 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
749 granularity = 0x1000;
750 *aspace |= VME_A24;
751 }
752 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
753 granularity = 0x10000;
754 *aspace |= VME_A32;
755 }
756 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
757 granularity = 0x10000;
758 *aspace |= VME_A64;
759 }
760
761 /* Need granularity before we set the size */
762 *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
763
764
765 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
766 *cycle |= VME_2eSST160;
767 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
768 *cycle |= VME_2eSST267;
769 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
770 *cycle |= VME_2eSST320;
771
772 if (ctl & TSI148_LCSR_ITAT_BLT)
773 *cycle |= VME_BLT;
774 if (ctl & TSI148_LCSR_ITAT_MBLT)
775 *cycle |= VME_MBLT;
776 if (ctl & TSI148_LCSR_ITAT_2eVME)
777 *cycle |= VME_2eVME;
778 if (ctl & TSI148_LCSR_ITAT_2eSST)
779 *cycle |= VME_2eSST;
780 if (ctl & TSI148_LCSR_ITAT_2eSSTB)
781 *cycle |= VME_2eSSTB;
782
783 if (ctl & TSI148_LCSR_ITAT_SUPR)
784 *cycle |= VME_SUPER;
785 if (ctl & TSI148_LCSR_ITAT_NPRIV)
786 *cycle |= VME_USER;
787 if (ctl & TSI148_LCSR_ITAT_PGM)
788 *cycle |= VME_PROG;
789 if (ctl & TSI148_LCSR_ITAT_DATA)
790 *cycle |= VME_DATA;
791
792 return 0;
793 }
794
795 /*
796 * Allocate and map PCI Resource
797 */
798 static int tsi148_alloc_resource(struct vme_master_resource *image,
799 unsigned long long size)
800 {
801 unsigned long long existing_size;
802 int retval = 0;
803 struct pci_dev *pdev;
804 struct vme_bridge *tsi148_bridge;
805
806 tsi148_bridge = image->parent;
807
808 pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
809
810 existing_size = (unsigned long long)(image->bus_resource.end -
811 image->bus_resource.start);
812
813 /* If the existing size is OK, return */
814 if ((size != 0) && (existing_size == (size - 1)))
815 return 0;
816
817 if (existing_size != 0) {
818 iounmap(image->kern_base);
819 image->kern_base = NULL;
820 if (image->bus_resource.name != NULL)
821 kfree(image->bus_resource.name);
822 release_resource(&image->bus_resource);
823 memset(&image->bus_resource, 0, sizeof(struct resource));
824 }
825
826 /* Exit here if size is zero */
827 if (size == 0)
828 return 0;
829
830 if (image->bus_resource.name == NULL) {
831 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
832 if (image->bus_resource.name == NULL) {
833 dev_err(tsi148_bridge->parent, "Unable to allocate "
834 "memory for resource name\n");
835 retval = -ENOMEM;
836 goto err_name;
837 }
838 }
839
840 sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
841 image->number);
842
843 image->bus_resource.start = 0;
844 image->bus_resource.end = (unsigned long)size;
845 image->bus_resource.flags = IORESOURCE_MEM;
846
847 retval = pci_bus_alloc_resource(pdev->bus,
848 &image->bus_resource, size, size, PCIBIOS_MIN_MEM,
849 0, NULL, NULL);
850 if (retval) {
851 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
852 "resource for window %d size 0x%lx start 0x%lx\n",
853 image->number, (unsigned long)size,
854 (unsigned long)image->bus_resource.start);
855 goto err_resource;
856 }
857
858 image->kern_base = ioremap_nocache(
859 image->bus_resource.start, size);
860 if (image->kern_base == NULL) {
861 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
862 retval = -ENOMEM;
863 goto err_remap;
864 }
865
866 return 0;
867
868 iounmap(image->kern_base);
869 image->kern_base = NULL;
870 err_remap:
871 release_resource(&image->bus_resource);
872 err_resource:
873 kfree(image->bus_resource.name);
874 memset(&image->bus_resource, 0, sizeof(struct resource));
875 err_name:
876 return retval;
877 }
878
879 /*
880 * Free and unmap PCI Resource
881 */
882 static void tsi148_free_resource(struct vme_master_resource *image)
883 {
884 iounmap(image->kern_base);
885 image->kern_base = NULL;
886 release_resource(&image->bus_resource);
887 kfree(image->bus_resource.name);
888 memset(&image->bus_resource, 0, sizeof(struct resource));
889 }
890
891 /*
892 * Set the attributes of an outbound window.
893 */
894 int tsi148_master_set(struct vme_master_resource *image, int enabled,
895 unsigned long long vme_base, unsigned long long size,
896 vme_address_t aspace, vme_cycle_t cycle, vme_width_t dwidth)
897 {
898 int retval = 0;
899 unsigned int i;
900 unsigned int temp_ctl = 0;
901 unsigned int pci_base_low, pci_base_high;
902 unsigned int pci_bound_low, pci_bound_high;
903 unsigned int vme_offset_low, vme_offset_high;
904 unsigned long long pci_bound, vme_offset, pci_base;
905 struct vme_bridge *tsi148_bridge;
906 struct tsi148_driver *bridge;
907
908 tsi148_bridge = image->parent;
909
910 bridge = tsi148_bridge->driver_priv;
911
912 /* Verify input data */
913 if (vme_base & 0xFFFF) {
914 dev_err(tsi148_bridge->parent, "Invalid VME Window "
915 "alignment\n");
916 retval = -EINVAL;
917 goto err_window;
918 }
919
920 if ((size == 0) && (enabled != 0)) {
921 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
922 "enabled windows\n");
923 retval = -EINVAL;
924 goto err_window;
925 }
926
927 spin_lock(&image->lock);
928
929 /* Let's allocate the resource here rather than further up the stack as
930 * it avoids pushing loads of bus dependant stuff up the stack. If size
931 * is zero, any existing resource will be freed.
932 */
933 retval = tsi148_alloc_resource(image, size);
934 if (retval) {
935 spin_unlock(&image->lock);
936 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
937 "resource\n");
938 goto err_res;
939 }
940
941 if (size == 0) {
942 pci_base = 0;
943 pci_bound = 0;
944 vme_offset = 0;
945 } else {
946 pci_base = (unsigned long long)image->bus_resource.start;
947
948 /*
949 * Bound address is a valid address for the window, adjust
950 * according to window granularity.
951 */
952 pci_bound = pci_base + (size - 0x10000);
953 vme_offset = vme_base - pci_base;
954 }
955
956 /* Convert 64-bit variables to 2x 32-bit variables */
957 reg_split(pci_base, &pci_base_high, &pci_base_low);
958 reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
959 reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
960
961 if (pci_base_low & 0xFFFF) {
962 spin_unlock(&image->lock);
963 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
964 retval = -EINVAL;
965 goto err_gran;
966 }
967 if (pci_bound_low & 0xFFFF) {
968 spin_unlock(&image->lock);
969 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
970 retval = -EINVAL;
971 goto err_gran;
972 }
973 if (vme_offset_low & 0xFFFF) {
974 spin_unlock(&image->lock);
975 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
976 "alignment\n");
977 retval = -EINVAL;
978 goto err_gran;
979 }
980
981 i = image->number;
982
983 /* Disable while we are mucking around */
984 temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
985 TSI148_LCSR_OFFSET_OTAT);
986 temp_ctl &= ~TSI148_LCSR_OTAT_EN;
987 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
988 TSI148_LCSR_OFFSET_OTAT);
989
990 /* Setup 2eSST speeds */
991 temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
992 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
993 case VME_2eSST160:
994 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
995 break;
996 case VME_2eSST267:
997 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
998 break;
999 case VME_2eSST320:
1000 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
1001 break;
1002 }
1003
1004 /* Setup cycle types */
1005 if (cycle & VME_BLT) {
1006 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1007 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
1008 }
1009 if (cycle & VME_MBLT) {
1010 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1011 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
1012 }
1013 if (cycle & VME_2eVME) {
1014 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1015 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
1016 }
1017 if (cycle & VME_2eSST) {
1018 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1019 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
1020 }
1021 if (cycle & VME_2eSSTB) {
1022 dev_warn(tsi148_bridge->parent, "Currently not setting "
1023 "Broadcast Select Registers\n");
1024 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1025 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
1026 }
1027
1028 /* Setup data width */
1029 temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
1030 switch (dwidth) {
1031 case VME_D16:
1032 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
1033 break;
1034 case VME_D32:
1035 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
1036 break;
1037 default:
1038 spin_unlock(&image->lock);
1039 dev_err(tsi148_bridge->parent, "Invalid data width\n");
1040 retval = -EINVAL;
1041 goto err_dwidth;
1042 }
1043
1044 /* Setup address space */
1045 temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
1046 switch (aspace) {
1047 case VME_A16:
1048 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
1049 break;
1050 case VME_A24:
1051 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
1052 break;
1053 case VME_A32:
1054 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
1055 break;
1056 case VME_A64:
1057 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
1058 break;
1059 case VME_CRCSR:
1060 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
1061 break;
1062 case VME_USER1:
1063 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
1064 break;
1065 case VME_USER2:
1066 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
1067 break;
1068 case VME_USER3:
1069 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
1070 break;
1071 case VME_USER4:
1072 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
1073 break;
1074 default:
1075 spin_unlock(&image->lock);
1076 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1077 retval = -EINVAL;
1078 goto err_aspace;
1079 break;
1080 }
1081
1082 temp_ctl &= ~(3<<4);
1083 if (cycle & VME_SUPER)
1084 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1085 if (cycle & VME_PROG)
1086 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1087
1088 /* Setup mapping */
1089 iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1090 TSI148_LCSR_OFFSET_OTSAU);
1091 iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1092 TSI148_LCSR_OFFSET_OTSAL);
1093 iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1094 TSI148_LCSR_OFFSET_OTEAU);
1095 iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1096 TSI148_LCSR_OFFSET_OTEAL);
1097 iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1098 TSI148_LCSR_OFFSET_OTOFU);
1099 iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1100 TSI148_LCSR_OFFSET_OTOFL);
1101
1102 /* Write ctl reg without enable */
1103 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1104 TSI148_LCSR_OFFSET_OTAT);
1105
1106 if (enabled)
1107 temp_ctl |= TSI148_LCSR_OTAT_EN;
1108
1109 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1110 TSI148_LCSR_OFFSET_OTAT);
1111
1112 spin_unlock(&image->lock);
1113 return 0;
1114
1115 err_aspace:
1116 err_dwidth:
1117 err_gran:
1118 tsi148_free_resource(image);
1119 err_res:
1120 err_window:
1121 return retval;
1122
1123 }
1124
1125 /*
1126 * Set the attributes of an outbound window.
1127 *
1128 * XXX Not parsing prefetch information.
1129 */
1130 int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1131 unsigned long long *vme_base, unsigned long long *size,
1132 vme_address_t *aspace, vme_cycle_t *cycle, vme_width_t *dwidth)
1133 {
1134 unsigned int i, ctl;
1135 unsigned int pci_base_low, pci_base_high;
1136 unsigned int pci_bound_low, pci_bound_high;
1137 unsigned int vme_offset_low, vme_offset_high;
1138
1139 unsigned long long pci_base, pci_bound, vme_offset;
1140 struct tsi148_driver *bridge;
1141
1142 bridge = image->parent->driver_priv;
1143
1144 i = image->number;
1145
1146 ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1147 TSI148_LCSR_OFFSET_OTAT);
1148
1149 pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1150 TSI148_LCSR_OFFSET_OTSAU);
1151 pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1152 TSI148_LCSR_OFFSET_OTSAL);
1153 pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1154 TSI148_LCSR_OFFSET_OTEAU);
1155 pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1156 TSI148_LCSR_OFFSET_OTEAL);
1157 vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1158 TSI148_LCSR_OFFSET_OTOFU);
1159 vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1160 TSI148_LCSR_OFFSET_OTOFL);
1161
1162 /* Convert 64-bit variables to 2x 32-bit variables */
1163 reg_join(pci_base_high, pci_base_low, &pci_base);
1164 reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1165 reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1166
1167 *vme_base = pci_base + vme_offset;
1168 *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1169
1170 *enabled = 0;
1171 *aspace = 0;
1172 *cycle = 0;
1173 *dwidth = 0;
1174
1175 if (ctl & TSI148_LCSR_OTAT_EN)
1176 *enabled = 1;
1177
1178 /* Setup address space */
1179 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1180 *aspace |= VME_A16;
1181 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1182 *aspace |= VME_A24;
1183 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1184 *aspace |= VME_A32;
1185 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1186 *aspace |= VME_A64;
1187 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1188 *aspace |= VME_CRCSR;
1189 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1190 *aspace |= VME_USER1;
1191 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1192 *aspace |= VME_USER2;
1193 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1194 *aspace |= VME_USER3;
1195 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1196 *aspace |= VME_USER4;
1197
1198 /* Setup 2eSST speeds */
1199 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1200 *cycle |= VME_2eSST160;
1201 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1202 *cycle |= VME_2eSST267;
1203 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1204 *cycle |= VME_2eSST320;
1205
1206 /* Setup cycle types */
1207 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1208 *cycle |= VME_SCT;
1209 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1210 *cycle |= VME_BLT;
1211 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1212 *cycle |= VME_MBLT;
1213 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1214 *cycle |= VME_2eVME;
1215 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1216 *cycle |= VME_2eSST;
1217 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1218 *cycle |= VME_2eSSTB;
1219
1220 if (ctl & TSI148_LCSR_OTAT_SUP)
1221 *cycle |= VME_SUPER;
1222 else
1223 *cycle |= VME_USER;
1224
1225 if (ctl & TSI148_LCSR_OTAT_PGM)
1226 *cycle |= VME_PROG;
1227 else
1228 *cycle |= VME_DATA;
1229
1230 /* Setup data width */
1231 if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1232 *dwidth = VME_D16;
1233 if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1234 *dwidth = VME_D32;
1235
1236 return 0;
1237 }
1238
1239
1240 int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1241 unsigned long long *vme_base, unsigned long long *size,
1242 vme_address_t *aspace, vme_cycle_t *cycle, vme_width_t *dwidth)
1243 {
1244 int retval;
1245
1246 spin_lock(&image->lock);
1247
1248 retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1249 cycle, dwidth);
1250
1251 spin_unlock(&image->lock);
1252
1253 return retval;
1254 }
1255
1256 ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1257 size_t count, loff_t offset)
1258 {
1259 int retval, enabled;
1260 unsigned long long vme_base, size;
1261 vme_address_t aspace;
1262 vme_cycle_t cycle;
1263 vme_width_t dwidth;
1264 struct vme_bus_error *vme_err = NULL;
1265 struct vme_bridge *tsi148_bridge;
1266
1267 tsi148_bridge = image->parent;
1268
1269 spin_lock(&image->lock);
1270
1271 memcpy_fromio(buf, image->kern_base + offset, (unsigned int)count);
1272 retval = count;
1273
1274 if (!err_chk)
1275 goto skip_chk;
1276
1277 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1278 &dwidth);
1279
1280 vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1281 count);
1282 if (vme_err != NULL) {
1283 dev_err(image->parent->parent, "First VME read error detected "
1284 "an at address 0x%llx\n", vme_err->address);
1285 retval = vme_err->address - (vme_base + offset);
1286 /* Clear down save errors in this address range */
1287 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1288 count);
1289 }
1290
1291 skip_chk:
1292 spin_unlock(&image->lock);
1293
1294 return retval;
1295 }
1296
1297
1298 ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1299 size_t count, loff_t offset)
1300 {
1301 int retval = 0, enabled;
1302 unsigned long long vme_base, size;
1303 vme_address_t aspace;
1304 vme_cycle_t cycle;
1305 vme_width_t dwidth;
1306
1307 struct vme_bus_error *vme_err = NULL;
1308 struct vme_bridge *tsi148_bridge;
1309 struct tsi148_driver *bridge;
1310
1311 tsi148_bridge = image->parent;
1312
1313 bridge = tsi148_bridge->driver_priv;
1314
1315 spin_lock(&image->lock);
1316
1317 memcpy_toio(image->kern_base + offset, buf, (unsigned int)count);
1318 retval = count;
1319
1320 /*
1321 * Writes are posted. We need to do a read on the VME bus to flush out
1322 * all of the writes before we check for errors. We can't guarentee
1323 * that reading the data we have just written is safe. It is believed
1324 * that there isn't any read, write re-ordering, so we can read any
1325 * location in VME space, so lets read the Device ID from the tsi148's
1326 * own registers as mapped into CR/CSR space.
1327 *
1328 * We check for saved errors in the written address range/space.
1329 */
1330
1331 if (!err_chk)
1332 goto skip_chk;
1333
1334 /*
1335 * Get window info first, to maximise the time that the buffers may
1336 * fluch on their own
1337 */
1338 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1339 &dwidth);
1340
1341 ioread16(bridge->flush_image->kern_base + 0x7F000);
1342
1343 vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1344 count);
1345 if (vme_err != NULL) {
1346 dev_warn(tsi148_bridge->parent, "First VME write error detected"
1347 " an at address 0x%llx\n", vme_err->address);
1348 retval = vme_err->address - (vme_base + offset);
1349 /* Clear down save errors in this address range */
1350 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1351 count);
1352 }
1353
1354 skip_chk:
1355 spin_unlock(&image->lock);
1356
1357 return retval;
1358 }
1359
1360 /*
1361 * Perform an RMW cycle on the VME bus.
1362 *
1363 * Requires a previously configured master window, returns final value.
1364 */
1365 unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1366 unsigned int mask, unsigned int compare, unsigned int swap,
1367 loff_t offset)
1368 {
1369 unsigned long long pci_addr;
1370 unsigned int pci_addr_high, pci_addr_low;
1371 u32 tmp, result;
1372 int i;
1373 struct tsi148_driver *bridge;
1374
1375 bridge = image->parent->driver_priv;
1376
1377 /* Find the PCI address that maps to the desired VME address */
1378 i = image->number;
1379
1380 /* Locking as we can only do one of these at a time */
1381 mutex_lock(&bridge->vme_rmw);
1382
1383 /* Lock image */
1384 spin_lock(&image->lock);
1385
1386 pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1387 TSI148_LCSR_OFFSET_OTSAU);
1388 pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1389 TSI148_LCSR_OFFSET_OTSAL);
1390
1391 reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1392 reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1393
1394 /* Configure registers */
1395 iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1396 iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1397 iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1398 iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1399 iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1400
1401 /* Enable RMW */
1402 tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1403 tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1404 iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1405
1406 /* Kick process off with a read to the required address. */
1407 result = ioread32be(image->kern_base + offset);
1408
1409 /* Disable RMW */
1410 tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1411 tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1412 iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1413
1414 spin_unlock(&image->lock);
1415
1416 mutex_unlock(&bridge->vme_rmw);
1417
1418 return result;
1419 }
1420
1421 static int tsi148_dma_set_vme_src_attributes(struct device *dev, u32 *attr,
1422 vme_address_t aspace, vme_cycle_t cycle, vme_width_t dwidth)
1423 {
1424 /* Setup 2eSST speeds */
1425 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1426 case VME_2eSST160:
1427 *attr |= TSI148_LCSR_DSAT_2eSSTM_160;
1428 break;
1429 case VME_2eSST267:
1430 *attr |= TSI148_LCSR_DSAT_2eSSTM_267;
1431 break;
1432 case VME_2eSST320:
1433 *attr |= TSI148_LCSR_DSAT_2eSSTM_320;
1434 break;
1435 }
1436
1437 /* Setup cycle types */
1438 if (cycle & VME_SCT)
1439 *attr |= TSI148_LCSR_DSAT_TM_SCT;
1440
1441 if (cycle & VME_BLT)
1442 *attr |= TSI148_LCSR_DSAT_TM_BLT;
1443
1444 if (cycle & VME_MBLT)
1445 *attr |= TSI148_LCSR_DSAT_TM_MBLT;
1446
1447 if (cycle & VME_2eVME)
1448 *attr |= TSI148_LCSR_DSAT_TM_2eVME;
1449
1450 if (cycle & VME_2eSST)
1451 *attr |= TSI148_LCSR_DSAT_TM_2eSST;
1452
1453 if (cycle & VME_2eSSTB) {
1454 dev_err(dev, "Currently not setting Broadcast Select "
1455 "Registers\n");
1456 *attr |= TSI148_LCSR_DSAT_TM_2eSSTB;
1457 }
1458
1459 /* Setup data width */
1460 switch (dwidth) {
1461 case VME_D16:
1462 *attr |= TSI148_LCSR_DSAT_DBW_16;
1463 break;
1464 case VME_D32:
1465 *attr |= TSI148_LCSR_DSAT_DBW_32;
1466 break;
1467 default:
1468 dev_err(dev, "Invalid data width\n");
1469 return -EINVAL;
1470 }
1471
1472 /* Setup address space */
1473 switch (aspace) {
1474 case VME_A16:
1475 *attr |= TSI148_LCSR_DSAT_AMODE_A16;
1476 break;
1477 case VME_A24:
1478 *attr |= TSI148_LCSR_DSAT_AMODE_A24;
1479 break;
1480 case VME_A32:
1481 *attr |= TSI148_LCSR_DSAT_AMODE_A32;
1482 break;
1483 case VME_A64:
1484 *attr |= TSI148_LCSR_DSAT_AMODE_A64;
1485 break;
1486 case VME_CRCSR:
1487 *attr |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1488 break;
1489 case VME_USER1:
1490 *attr |= TSI148_LCSR_DSAT_AMODE_USER1;
1491 break;
1492 case VME_USER2:
1493 *attr |= TSI148_LCSR_DSAT_AMODE_USER2;
1494 break;
1495 case VME_USER3:
1496 *attr |= TSI148_LCSR_DSAT_AMODE_USER3;
1497 break;
1498 case VME_USER4:
1499 *attr |= TSI148_LCSR_DSAT_AMODE_USER4;
1500 break;
1501 default:
1502 dev_err(dev, "Invalid address space\n");
1503 return -EINVAL;
1504 break;
1505 }
1506
1507 if (cycle & VME_SUPER)
1508 *attr |= TSI148_LCSR_DSAT_SUP;
1509 if (cycle & VME_PROG)
1510 *attr |= TSI148_LCSR_DSAT_PGM;
1511
1512 return 0;
1513 }
1514
1515 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, u32 *attr,
1516 vme_address_t aspace, vme_cycle_t cycle, vme_width_t dwidth)
1517 {
1518 /* Setup 2eSST speeds */
1519 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1520 case VME_2eSST160:
1521 *attr |= TSI148_LCSR_DDAT_2eSSTM_160;
1522 break;
1523 case VME_2eSST267:
1524 *attr |= TSI148_LCSR_DDAT_2eSSTM_267;
1525 break;
1526 case VME_2eSST320:
1527 *attr |= TSI148_LCSR_DDAT_2eSSTM_320;
1528 break;
1529 }
1530
1531 /* Setup cycle types */
1532 if (cycle & VME_SCT)
1533 *attr |= TSI148_LCSR_DDAT_TM_SCT;
1534
1535 if (cycle & VME_BLT)
1536 *attr |= TSI148_LCSR_DDAT_TM_BLT;
1537
1538 if (cycle & VME_MBLT)
1539 *attr |= TSI148_LCSR_DDAT_TM_MBLT;
1540
1541 if (cycle & VME_2eVME)
1542 *attr |= TSI148_LCSR_DDAT_TM_2eVME;
1543
1544 if (cycle & VME_2eSST)
1545 *attr |= TSI148_LCSR_DDAT_TM_2eSST;
1546
1547 if (cycle & VME_2eSSTB) {
1548 dev_err(dev, "Currently not setting Broadcast Select "
1549 "Registers\n");
1550 *attr |= TSI148_LCSR_DDAT_TM_2eSSTB;
1551 }
1552
1553 /* Setup data width */
1554 switch (dwidth) {
1555 case VME_D16:
1556 *attr |= TSI148_LCSR_DDAT_DBW_16;
1557 break;
1558 case VME_D32:
1559 *attr |= TSI148_LCSR_DDAT_DBW_32;
1560 break;
1561 default:
1562 dev_err(dev, "Invalid data width\n");
1563 return -EINVAL;
1564 }
1565
1566 /* Setup address space */
1567 switch (aspace) {
1568 case VME_A16:
1569 *attr |= TSI148_LCSR_DDAT_AMODE_A16;
1570 break;
1571 case VME_A24:
1572 *attr |= TSI148_LCSR_DDAT_AMODE_A24;
1573 break;
1574 case VME_A32:
1575 *attr |= TSI148_LCSR_DDAT_AMODE_A32;
1576 break;
1577 case VME_A64:
1578 *attr |= TSI148_LCSR_DDAT_AMODE_A64;
1579 break;
1580 case VME_CRCSR:
1581 *attr |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1582 break;
1583 case VME_USER1:
1584 *attr |= TSI148_LCSR_DDAT_AMODE_USER1;
1585 break;
1586 case VME_USER2:
1587 *attr |= TSI148_LCSR_DDAT_AMODE_USER2;
1588 break;
1589 case VME_USER3:
1590 *attr |= TSI148_LCSR_DDAT_AMODE_USER3;
1591 break;
1592 case VME_USER4:
1593 *attr |= TSI148_LCSR_DDAT_AMODE_USER4;
1594 break;
1595 default:
1596 dev_err(dev, "Invalid address space\n");
1597 return -EINVAL;
1598 break;
1599 }
1600
1601 if (cycle & VME_SUPER)
1602 *attr |= TSI148_LCSR_DDAT_SUP;
1603 if (cycle & VME_PROG)
1604 *attr |= TSI148_LCSR_DDAT_PGM;
1605
1606 return 0;
1607 }
1608
1609 /*
1610 * Add a link list descriptor to the list
1611 */
1612 int tsi148_dma_list_add(struct vme_dma_list *list, struct vme_dma_attr *src,
1613 struct vme_dma_attr *dest, size_t count)
1614 {
1615 struct tsi148_dma_entry *entry, *prev;
1616 u32 address_high, address_low;
1617 struct vme_dma_pattern *pattern_attr;
1618 struct vme_dma_pci *pci_attr;
1619 struct vme_dma_vme *vme_attr;
1620 dma_addr_t desc_ptr;
1621 int retval = 0;
1622 struct vme_bridge *tsi148_bridge;
1623
1624 tsi148_bridge = list->parent->parent;
1625
1626 /* Descriptor must be aligned on 64-bit boundaries */
1627 entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
1628 if (entry == NULL) {
1629 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
1630 "dma resource structure\n");
1631 retval = -ENOMEM;
1632 goto err_mem;
1633 }
1634
1635 /* Test descriptor alignment */
1636 if ((unsigned long)&entry->descriptor & 0x7) {
1637 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1638 "byte boundary as required: %p\n",
1639 &entry->descriptor);
1640 retval = -EINVAL;
1641 goto err_align;
1642 }
1643
1644 /* Given we are going to fill out the structure, we probably don't
1645 * need to zero it, but better safe than sorry for now.
1646 */
1647 memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
1648
1649 /* Fill out source part */
1650 switch (src->type) {
1651 case VME_DMA_PATTERN:
1652 pattern_attr = src->private;
1653
1654 entry->descriptor.dsal = pattern_attr->pattern;
1655 entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_PAT;
1656 /* Default behaviour is 32 bit pattern */
1657 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1658 entry->descriptor.dsat |= TSI148_LCSR_DSAT_PSZ;
1659
1660 /* It seems that the default behaviour is to increment */
1661 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1662 entry->descriptor.dsat |= TSI148_LCSR_DSAT_NIN;
1663
1664 break;
1665 case VME_DMA_PCI:
1666 pci_attr = src->private;
1667
1668 reg_split((unsigned long long)pci_attr->address, &address_high,
1669 &address_low);
1670 entry->descriptor.dsau = address_high;
1671 entry->descriptor.dsal = address_low;
1672 entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_PCI;
1673 break;
1674 case VME_DMA_VME:
1675 vme_attr = src->private;
1676
1677 reg_split((unsigned long long)vme_attr->address, &address_high,
1678 &address_low);
1679 entry->descriptor.dsau = address_high;
1680 entry->descriptor.dsal = address_low;
1681 entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_VME;
1682
1683 retval = tsi148_dma_set_vme_src_attributes(
1684 tsi148_bridge->parent, &entry->descriptor.dsat,
1685 vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1686 if (retval < 0)
1687 goto err_source;
1688 break;
1689 default:
1690 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1691 retval = -EINVAL;
1692 goto err_source;
1693 break;
1694 }
1695
1696 /* Assume last link - this will be over-written by adding another */
1697 entry->descriptor.dnlau = 0;
1698 entry->descriptor.dnlal = TSI148_LCSR_DNLAL_LLA;
1699
1700
1701 /* Fill out destination part */
1702 switch (dest->type) {
1703 case VME_DMA_PCI:
1704 pci_attr = dest->private;
1705
1706 reg_split((unsigned long long)pci_attr->address, &address_high,
1707 &address_low);
1708 entry->descriptor.ddau = address_high;
1709 entry->descriptor.ddal = address_low;
1710 entry->descriptor.ddat = TSI148_LCSR_DDAT_TYP_PCI;
1711 break;
1712 case VME_DMA_VME:
1713 vme_attr = dest->private;
1714
1715 reg_split((unsigned long long)vme_attr->address, &address_high,
1716 &address_low);
1717 entry->descriptor.ddau = address_high;
1718 entry->descriptor.ddal = address_low;
1719 entry->descriptor.ddat = TSI148_LCSR_DDAT_TYP_VME;
1720
1721 retval = tsi148_dma_set_vme_dest_attributes(
1722 tsi148_bridge->parent, &entry->descriptor.ddat,
1723 vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1724 if (retval < 0)
1725 goto err_dest;
1726 break;
1727 default:
1728 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1729 retval = -EINVAL;
1730 goto err_dest;
1731 break;
1732 }
1733
1734 /* Fill out count */
1735 entry->descriptor.dcnt = (u32)count;
1736
1737 /* Add to list */
1738 list_add_tail(&entry->list, &list->entries);
1739
1740 /* Fill out previous descriptors "Next Address" */
1741 if (entry->list.prev != &list->entries) {
1742 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1743 list);
1744 /* We need the bus address for the pointer */
1745 desc_ptr = virt_to_bus(&entry->descriptor);
1746 reg_split(desc_ptr, &prev->descriptor.dnlau,
1747 &prev->descriptor.dnlal);
1748 }
1749
1750 return 0;
1751
1752 err_dest:
1753 err_source:
1754 err_align:
1755 kfree(entry);
1756 err_mem:
1757 return retval;
1758 }
1759
1760 /*
1761 * Check to see if the provided DMA channel is busy.
1762 */
1763 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1764 {
1765 u32 tmp;
1766 struct tsi148_driver *bridge;
1767
1768 bridge = tsi148_bridge->driver_priv;
1769
1770 tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1771 TSI148_LCSR_OFFSET_DSTA);
1772
1773 if (tmp & TSI148_LCSR_DSTA_BSY)
1774 return 0;
1775 else
1776 return 1;
1777
1778 }
1779
1780 /*
1781 * Execute a previously generated link list
1782 *
1783 * XXX Need to provide control register configuration.
1784 */
1785 int tsi148_dma_list_exec(struct vme_dma_list *list)
1786 {
1787 struct vme_dma_resource *ctrlr;
1788 int channel, retval = 0;
1789 struct tsi148_dma_entry *entry;
1790 dma_addr_t bus_addr;
1791 u32 bus_addr_high, bus_addr_low;
1792 u32 val, dctlreg = 0;
1793 struct vme_bridge *tsi148_bridge;
1794 struct tsi148_driver *bridge;
1795
1796 ctrlr = list->parent;
1797
1798 tsi148_bridge = ctrlr->parent;
1799
1800 bridge = tsi148_bridge->driver_priv;
1801
1802 mutex_lock(&ctrlr->mtx);
1803
1804 channel = ctrlr->number;
1805
1806 if (!list_empty(&ctrlr->running)) {
1807 /*
1808 * XXX We have an active DMA transfer and currently haven't
1809 * sorted out the mechanism for "pending" DMA transfers.
1810 * Return busy.
1811 */
1812 /* Need to add to pending here */
1813 mutex_unlock(&ctrlr->mtx);
1814 return -EBUSY;
1815 } else {
1816 list_add(&list->list, &ctrlr->running);
1817 }
1818
1819 /* Get first bus address and write into registers */
1820 entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1821 list);
1822
1823 bus_addr = virt_to_bus(&entry->descriptor);
1824
1825 mutex_unlock(&ctrlr->mtx);
1826
1827 reg_split(bus_addr, &bus_addr_high, &bus_addr_low);
1828
1829 iowrite32be(bus_addr_high, bridge->base +
1830 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1831 iowrite32be(bus_addr_low, bridge->base +
1832 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1833
1834 /* Start the operation */
1835 iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1836 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1837
1838 wait_event_interruptible(bridge->dma_queue[channel],
1839 tsi148_dma_busy(ctrlr->parent, channel));
1840 /*
1841 * Read status register, this register is valid until we kick off a
1842 * new transfer.
1843 */
1844 val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1845 TSI148_LCSR_OFFSET_DSTA);
1846
1847 if (val & TSI148_LCSR_DSTA_VBE) {
1848 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1849 retval = -EIO;
1850 }
1851
1852 /* Remove list from running list */
1853 mutex_lock(&ctrlr->mtx);
1854 list_del(&list->list);
1855 mutex_unlock(&ctrlr->mtx);
1856
1857 return retval;
1858 }
1859
1860 /*
1861 * Clean up a previously generated link list
1862 *
1863 * We have a separate function, don't assume that the chain can't be reused.
1864 */
1865 int tsi148_dma_list_empty(struct vme_dma_list *list)
1866 {
1867 struct list_head *pos, *temp;
1868 struct tsi148_dma_entry *entry;
1869
1870 /* detach and free each entry */
1871 list_for_each_safe(pos, temp, &list->entries) {
1872 list_del(pos);
1873 entry = list_entry(pos, struct tsi148_dma_entry, list);
1874 kfree(entry);
1875 }
1876
1877 return 0;
1878 }
1879
1880 /*
1881 * All 4 location monitors reside at the same base - this is therefore a
1882 * system wide configuration.
1883 *
1884 * This does not enable the LM monitor - that should be done when the first
1885 * callback is attached and disabled when the last callback is removed.
1886 */
1887 int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
1888 vme_address_t aspace, vme_cycle_t cycle)
1889 {
1890 u32 lm_base_high, lm_base_low, lm_ctl = 0;
1891 int i;
1892 struct vme_bridge *tsi148_bridge;
1893 struct tsi148_driver *bridge;
1894
1895 tsi148_bridge = lm->parent;
1896
1897 bridge = tsi148_bridge->driver_priv;
1898
1899 mutex_lock(&lm->mtx);
1900
1901 /* If we already have a callback attached, we can't move it! */
1902 for (i = 0; i < lm->monitors; i++) {
1903 if (bridge->lm_callback[i] != NULL) {
1904 mutex_unlock(&lm->mtx);
1905 dev_err(tsi148_bridge->parent, "Location monitor "
1906 "callback attached, can't reset\n");
1907 return -EBUSY;
1908 }
1909 }
1910
1911 switch (aspace) {
1912 case VME_A16:
1913 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
1914 break;
1915 case VME_A24:
1916 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
1917 break;
1918 case VME_A32:
1919 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
1920 break;
1921 case VME_A64:
1922 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
1923 break;
1924 default:
1925 mutex_unlock(&lm->mtx);
1926 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1927 return -EINVAL;
1928 break;
1929 }
1930
1931 if (cycle & VME_SUPER)
1932 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
1933 if (cycle & VME_USER)
1934 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
1935 if (cycle & VME_PROG)
1936 lm_ctl |= TSI148_LCSR_LMAT_PGM;
1937 if (cycle & VME_DATA)
1938 lm_ctl |= TSI148_LCSR_LMAT_DATA;
1939
1940 reg_split(lm_base, &lm_base_high, &lm_base_low);
1941
1942 iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
1943 iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
1944 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
1945
1946 mutex_unlock(&lm->mtx);
1947
1948 return 0;
1949 }
1950
1951 /* Get configuration of the callback monitor and return whether it is enabled
1952 * or disabled.
1953 */
1954 int tsi148_lm_get(struct vme_lm_resource *lm, unsigned long long *lm_base,
1955 vme_address_t *aspace, vme_cycle_t *cycle)
1956 {
1957 u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
1958 struct tsi148_driver *bridge;
1959
1960 bridge = lm->parent->driver_priv;
1961
1962 mutex_lock(&lm->mtx);
1963
1964 lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
1965 lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
1966 lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
1967
1968 reg_join(lm_base_high, lm_base_low, lm_base);
1969
1970 if (lm_ctl & TSI148_LCSR_LMAT_EN)
1971 enabled = 1;
1972
1973 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
1974 *aspace |= VME_A16;
1975
1976 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
1977 *aspace |= VME_A24;
1978
1979 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
1980 *aspace |= VME_A32;
1981
1982 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
1983 *aspace |= VME_A64;
1984
1985
1986 if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
1987 *cycle |= VME_SUPER;
1988 if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
1989 *cycle |= VME_USER;
1990 if (lm_ctl & TSI148_LCSR_LMAT_PGM)
1991 *cycle |= VME_PROG;
1992 if (lm_ctl & TSI148_LCSR_LMAT_DATA)
1993 *cycle |= VME_DATA;
1994
1995 mutex_unlock(&lm->mtx);
1996
1997 return enabled;
1998 }
1999
2000 /*
2001 * Attach a callback to a specific location monitor.
2002 *
2003 * Callback will be passed the monitor triggered.
2004 */
2005 int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2006 void (*callback)(int))
2007 {
2008 u32 lm_ctl, tmp;
2009 struct vme_bridge *tsi148_bridge;
2010 struct tsi148_driver *bridge;
2011
2012 tsi148_bridge = lm->parent;
2013
2014 bridge = tsi148_bridge->driver_priv;
2015
2016 mutex_lock(&lm->mtx);
2017
2018 /* Ensure that the location monitor is configured - need PGM or DATA */
2019 lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2020 if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2021 mutex_unlock(&lm->mtx);
2022 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2023 "configured\n");
2024 return -EINVAL;
2025 }
2026
2027 /* Check that a callback isn't already attached */
2028 if (bridge->lm_callback[monitor] != NULL) {
2029 mutex_unlock(&lm->mtx);
2030 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2031 return -EBUSY;
2032 }
2033
2034 /* Attach callback */
2035 bridge->lm_callback[monitor] = callback;
2036
2037 /* Enable Location Monitor interrupt */
2038 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2039 tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2040 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2041
2042 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2043 tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2044 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2045
2046 /* Ensure that global Location Monitor Enable set */
2047 if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2048 lm_ctl |= TSI148_LCSR_LMAT_EN;
2049 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2050 }
2051
2052 mutex_unlock(&lm->mtx);
2053
2054 return 0;
2055 }
2056
2057 /*
2058 * Detach a callback function forn a specific location monitor.
2059 */
2060 int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2061 {
2062 u32 lm_en, tmp;
2063 struct tsi148_driver *bridge;
2064
2065 bridge = lm->parent->driver_priv;
2066
2067 mutex_lock(&lm->mtx);
2068
2069 /* Disable Location Monitor and ensure previous interrupts are clear */
2070 lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2071 lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2072 iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2073
2074 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2075 tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2076 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2077
2078 iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2079 bridge->base + TSI148_LCSR_INTC);
2080
2081 /* Detach callback */
2082 bridge->lm_callback[monitor] = NULL;
2083
2084 /* If all location monitors disabled, disable global Location Monitor */
2085 if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2086 TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2087 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2088 tmp &= ~TSI148_LCSR_LMAT_EN;
2089 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2090 }
2091
2092 mutex_unlock(&lm->mtx);
2093
2094 return 0;
2095 }
2096
2097 /*
2098 * Determine Geographical Addressing
2099 */
2100 int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2101 {
2102 u32 slot = 0;
2103 struct tsi148_driver *bridge;
2104
2105 bridge = tsi148_bridge->driver_priv;
2106
2107 if (!geoid) {
2108 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2109 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2110 } else
2111 slot = geoid;
2112
2113 return (int)slot;
2114 }
2115
2116 static int __init tsi148_init(void)
2117 {
2118 return pci_register_driver(&tsi148_driver);
2119 }
2120
2121 /*
2122 * Configure CR/CSR space
2123 *
2124 * Access to the CR/CSR can be configured at power-up. The location of the
2125 * CR/CSR registers in the CR/CSR address space is determined by the boards
2126 * Auto-ID or Geographic address. This function ensures that the window is
2127 * enabled at an offset consistent with the boards geopgraphic address.
2128 *
2129 * Each board has a 512kB window, with the highest 4kB being used for the
2130 * boards registers, this means there is a fix length 508kB window which must
2131 * be mapped onto PCI memory.
2132 */
2133 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2134 struct pci_dev *pdev)
2135 {
2136 u32 cbar, crat, vstat;
2137 u32 crcsr_bus_high, crcsr_bus_low;
2138 int retval;
2139 struct tsi148_driver *bridge;
2140
2141 bridge = tsi148_bridge->driver_priv;
2142
2143 /* Allocate mem for CR/CSR image */
2144 bridge->crcsr_kernel = pci_alloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2145 &bridge->crcsr_bus);
2146 if (bridge->crcsr_kernel == NULL) {
2147 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2148 "CR/CSR image\n");
2149 return -ENOMEM;
2150 }
2151
2152 memset(bridge->crcsr_kernel, 0, VME_CRCSR_BUF_SIZE);
2153
2154 reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2155
2156 iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2157 iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2158
2159 /* Ensure that the CR/CSR is configured at the correct offset */
2160 cbar = ioread32be(bridge->base + TSI148_CBAR);
2161 cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2162
2163 vstat = tsi148_slot_get(tsi148_bridge);
2164
2165 if (cbar != vstat) {
2166 cbar = vstat;
2167 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2168 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2169 }
2170 dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2171
2172 crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2173 if (crat & TSI148_LCSR_CRAT_EN) {
2174 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2175 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2176 bridge->base + TSI148_LCSR_CRAT);
2177 } else
2178 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2179
2180 /* If we want flushed, error-checked writes, set up a window
2181 * over the CR/CSR registers. We read from here to safely flush
2182 * through VME writes.
2183 */
2184 if (err_chk) {
2185 retval = tsi148_master_set(bridge->flush_image, 1,
2186 (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2187 VME_D16);
2188 if (retval)
2189 dev_err(tsi148_bridge->parent, "Configuring flush image"
2190 " failed\n");
2191 }
2192
2193 return 0;
2194
2195 }
2196
2197 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2198 struct pci_dev *pdev)
2199 {
2200 u32 crat;
2201 struct tsi148_driver *bridge;
2202
2203 bridge = tsi148_bridge->driver_priv;
2204
2205 /* Turn off CR/CSR space */
2206 crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2207 iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2208 bridge->base + TSI148_LCSR_CRAT);
2209
2210 /* Free image */
2211 iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2212 iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2213
2214 pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2215 bridge->crcsr_bus);
2216 }
2217
2218 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2219 {
2220 int retval, i, master_num;
2221 u32 data;
2222 struct list_head *pos = NULL;
2223 struct vme_bridge *tsi148_bridge;
2224 struct tsi148_driver *tsi148_device;
2225 struct vme_master_resource *master_image;
2226 struct vme_slave_resource *slave_image;
2227 struct vme_dma_resource *dma_ctrlr;
2228 struct vme_lm_resource *lm;
2229
2230 /* If we want to support more than one of each bridge, we need to
2231 * dynamically generate this so we get one per device
2232 */
2233 tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
2234 if (tsi148_bridge == NULL) {
2235 dev_err(&pdev->dev, "Failed to allocate memory for device "
2236 "structure\n");
2237 retval = -ENOMEM;
2238 goto err_struct;
2239 }
2240
2241 tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
2242 if (tsi148_device == NULL) {
2243 dev_err(&pdev->dev, "Failed to allocate memory for device "
2244 "structure\n");
2245 retval = -ENOMEM;
2246 goto err_driver;
2247 }
2248
2249 tsi148_bridge->driver_priv = tsi148_device;
2250
2251 /* Enable the device */
2252 retval = pci_enable_device(pdev);
2253 if (retval) {
2254 dev_err(&pdev->dev, "Unable to enable device\n");
2255 goto err_enable;
2256 }
2257
2258 /* Map Registers */
2259 retval = pci_request_regions(pdev, driver_name);
2260 if (retval) {
2261 dev_err(&pdev->dev, "Unable to reserve resources\n");
2262 goto err_resource;
2263 }
2264
2265 /* map registers in BAR 0 */
2266 tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2267 4096);
2268 if (!tsi148_device->base) {
2269 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2270 retval = -EIO;
2271 goto err_remap;
2272 }
2273
2274 /* Check to see if the mapping worked out */
2275 data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2276 if (data != PCI_VENDOR_ID_TUNDRA) {
2277 dev_err(&pdev->dev, "CRG region check failed\n");
2278 retval = -EIO;
2279 goto err_test;
2280 }
2281
2282 /* Initialize wait queues & mutual exclusion flags */
2283 init_waitqueue_head(&tsi148_device->dma_queue[0]);
2284 init_waitqueue_head(&tsi148_device->dma_queue[1]);
2285 init_waitqueue_head(&tsi148_device->iack_queue);
2286 mutex_init(&tsi148_device->vme_int);
2287 mutex_init(&tsi148_device->vme_rmw);
2288
2289 tsi148_bridge->parent = &pdev->dev;
2290 strcpy(tsi148_bridge->name, driver_name);
2291
2292 /* Setup IRQ */
2293 retval = tsi148_irq_init(tsi148_bridge);
2294 if (retval != 0) {
2295 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2296 goto err_irq;
2297 }
2298
2299 /* If we are going to flush writes, we need to read from the VME bus.
2300 * We need to do this safely, thus we read the devices own CR/CSR
2301 * register. To do this we must set up a window in CR/CSR space and
2302 * hence have one less master window resource available.
2303 */
2304 master_num = TSI148_MAX_MASTER;
2305 if (err_chk) {
2306 master_num--;
2307
2308 tsi148_device->flush_image =
2309 kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
2310 if (tsi148_device->flush_image == NULL) {
2311 dev_err(&pdev->dev, "Failed to allocate memory for "
2312 "flush resource structure\n");
2313 retval = -ENOMEM;
2314 goto err_master;
2315 }
2316 tsi148_device->flush_image->parent = tsi148_bridge;
2317 spin_lock_init(&tsi148_device->flush_image->lock);
2318 tsi148_device->flush_image->locked = 1;
2319 tsi148_device->flush_image->number = master_num;
2320 tsi148_device->flush_image->address_attr = VME_A16 | VME_A24 |
2321 VME_A32 | VME_A64;
2322 tsi148_device->flush_image->cycle_attr = VME_SCT | VME_BLT |
2323 VME_MBLT | VME_2eVME | VME_2eSST | VME_2eSSTB |
2324 VME_2eSST160 | VME_2eSST267 | VME_2eSST320 | VME_SUPER |
2325 VME_USER | VME_PROG | VME_DATA;
2326 tsi148_device->flush_image->width_attr = VME_D16 | VME_D32;
2327 memset(&tsi148_device->flush_image->bus_resource, 0,
2328 sizeof(struct resource));
2329 tsi148_device->flush_image->kern_base = NULL;
2330 }
2331
2332 /* Add master windows to list */
2333 INIT_LIST_HEAD(&tsi148_bridge->master_resources);
2334 for (i = 0; i < master_num; i++) {
2335 master_image = kmalloc(sizeof(struct vme_master_resource),
2336 GFP_KERNEL);
2337 if (master_image == NULL) {
2338 dev_err(&pdev->dev, "Failed to allocate memory for "
2339 "master resource structure\n");
2340 retval = -ENOMEM;
2341 goto err_master;
2342 }
2343 master_image->parent = tsi148_bridge;
2344 spin_lock_init(&master_image->lock);
2345 master_image->locked = 0;
2346 master_image->number = i;
2347 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2348 VME_A64;
2349 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2350 VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2351 VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2352 VME_PROG | VME_DATA;
2353 master_image->width_attr = VME_D16 | VME_D32;
2354 memset(&master_image->bus_resource, 0,
2355 sizeof(struct resource));
2356 master_image->kern_base = NULL;
2357 list_add_tail(&master_image->list,
2358 &tsi148_bridge->master_resources);
2359 }
2360
2361 /* Add slave windows to list */
2362 INIT_LIST_HEAD(&tsi148_bridge->slave_resources);
2363 for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2364 slave_image = kmalloc(sizeof(struct vme_slave_resource),
2365 GFP_KERNEL);
2366 if (slave_image == NULL) {
2367 dev_err(&pdev->dev, "Failed to allocate memory for "
2368 "slave resource structure\n");
2369 retval = -ENOMEM;
2370 goto err_slave;
2371 }
2372 slave_image->parent = tsi148_bridge;
2373 mutex_init(&slave_image->mtx);
2374 slave_image->locked = 0;
2375 slave_image->number = i;
2376 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2377 VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2378 VME_USER3 | VME_USER4;
2379 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2380 VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2381 VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2382 VME_PROG | VME_DATA;
2383 list_add_tail(&slave_image->list,
2384 &tsi148_bridge->slave_resources);
2385 }
2386
2387 /* Add dma engines to list */
2388 INIT_LIST_HEAD(&tsi148_bridge->dma_resources);
2389 for (i = 0; i < TSI148_MAX_DMA; i++) {
2390 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
2391 GFP_KERNEL);
2392 if (dma_ctrlr == NULL) {
2393 dev_err(&pdev->dev, "Failed to allocate memory for "
2394 "dma resource structure\n");
2395 retval = -ENOMEM;
2396 goto err_dma;
2397 }
2398 dma_ctrlr->parent = tsi148_bridge;
2399 mutex_init(&dma_ctrlr->mtx);
2400 dma_ctrlr->locked = 0;
2401 dma_ctrlr->number = i;
2402 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2403 VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2404 VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2405 VME_DMA_PATTERN_TO_MEM;
2406 INIT_LIST_HEAD(&dma_ctrlr->pending);
2407 INIT_LIST_HEAD(&dma_ctrlr->running);
2408 list_add_tail(&dma_ctrlr->list,
2409 &tsi148_bridge->dma_resources);
2410 }
2411
2412 /* Add location monitor to list */
2413 INIT_LIST_HEAD(&tsi148_bridge->lm_resources);
2414 lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
2415 if (lm == NULL) {
2416 dev_err(&pdev->dev, "Failed to allocate memory for "
2417 "location monitor resource structure\n");
2418 retval = -ENOMEM;
2419 goto err_lm;
2420 }
2421 lm->parent = tsi148_bridge;
2422 mutex_init(&lm->mtx);
2423 lm->locked = 0;
2424 lm->number = 1;
2425 lm->monitors = 4;
2426 list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2427
2428 tsi148_bridge->slave_get = tsi148_slave_get;
2429 tsi148_bridge->slave_set = tsi148_slave_set;
2430 tsi148_bridge->master_get = tsi148_master_get;
2431 tsi148_bridge->master_set = tsi148_master_set;
2432 tsi148_bridge->master_read = tsi148_master_read;
2433 tsi148_bridge->master_write = tsi148_master_write;
2434 tsi148_bridge->master_rmw = tsi148_master_rmw;
2435 tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2436 tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2437 tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2438 tsi148_bridge->irq_set = tsi148_irq_set;
2439 tsi148_bridge->irq_generate = tsi148_irq_generate;
2440 tsi148_bridge->lm_set = tsi148_lm_set;
2441 tsi148_bridge->lm_get = tsi148_lm_get;
2442 tsi148_bridge->lm_attach = tsi148_lm_attach;
2443 tsi148_bridge->lm_detach = tsi148_lm_detach;
2444 tsi148_bridge->slot_get = tsi148_slot_get;
2445
2446 data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2447 dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2448 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2449 if (!geoid)
2450 dev_info(&pdev->dev, "VME geographical address is %d\n",
2451 data & TSI148_LCSR_VSTAT_GA_M);
2452 else
2453 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2454 geoid);
2455
2456 dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2457 err_chk ? "enabled" : "disabled");
2458
2459 if (tsi148_crcsr_init(tsi148_bridge, pdev)) {
2460 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2461 goto err_crcsr;
2462 }
2463
2464 retval = vme_register_bridge(tsi148_bridge);
2465 if (retval != 0) {
2466 dev_err(&pdev->dev, "Chip Registration failed.\n");
2467 goto err_reg;
2468 }
2469
2470 pci_set_drvdata(pdev, tsi148_bridge);
2471
2472 /* Clear VME bus "board fail", and "power-up reset" lines */
2473 data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2474 data &= ~TSI148_LCSR_VSTAT_BRDFL;
2475 data |= TSI148_LCSR_VSTAT_CPURST;
2476 iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2477
2478 return 0;
2479
2480 vme_unregister_bridge(tsi148_bridge);
2481 err_reg:
2482 tsi148_crcsr_exit(tsi148_bridge, pdev);
2483 err_crcsr:
2484 err_lm:
2485 /* resources are stored in link list */
2486 list_for_each(pos, &tsi148_bridge->lm_resources) {
2487 lm = list_entry(pos, struct vme_lm_resource, list);
2488 list_del(pos);
2489 kfree(lm);
2490 }
2491 err_dma:
2492 /* resources are stored in link list */
2493 list_for_each(pos, &tsi148_bridge->dma_resources) {
2494 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2495 list_del(pos);
2496 kfree(dma_ctrlr);
2497 }
2498 err_slave:
2499 /* resources are stored in link list */
2500 list_for_each(pos, &tsi148_bridge->slave_resources) {
2501 slave_image = list_entry(pos, struct vme_slave_resource, list);
2502 list_del(pos);
2503 kfree(slave_image);
2504 }
2505 err_master:
2506 /* resources are stored in link list */
2507 list_for_each(pos, &tsi148_bridge->master_resources) {
2508 master_image = list_entry(pos, struct vme_master_resource,
2509 list);
2510 list_del(pos);
2511 kfree(master_image);
2512 }
2513
2514 tsi148_irq_exit(tsi148_device, pdev);
2515 err_irq:
2516 err_test:
2517 iounmap(tsi148_device->base);
2518 err_remap:
2519 pci_release_regions(pdev);
2520 err_resource:
2521 pci_disable_device(pdev);
2522 err_enable:
2523 kfree(tsi148_device);
2524 err_driver:
2525 kfree(tsi148_bridge);
2526 err_struct:
2527 return retval;
2528
2529 }
2530
2531 static void tsi148_remove(struct pci_dev *pdev)
2532 {
2533 struct list_head *pos = NULL;
2534 struct vme_master_resource *master_image;
2535 struct vme_slave_resource *slave_image;
2536 struct vme_dma_resource *dma_ctrlr;
2537 int i;
2538 struct tsi148_driver *bridge;
2539 struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2540
2541 bridge = tsi148_bridge->driver_priv;
2542
2543
2544 dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2545
2546 /*
2547 * Shutdown all inbound and outbound windows.
2548 */
2549 for (i = 0; i < 8; i++) {
2550 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2551 TSI148_LCSR_OFFSET_ITAT);
2552 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2553 TSI148_LCSR_OFFSET_OTAT);
2554 }
2555
2556 /*
2557 * Shutdown Location monitor.
2558 */
2559 iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2560
2561 /*
2562 * Shutdown CRG map.
2563 */
2564 iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2565
2566 /*
2567 * Clear error status.
2568 */
2569 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2570 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2571 iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2572
2573 /*
2574 * Remove VIRQ interrupt (if any)
2575 */
2576 if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2577 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2578
2579 /*
2580 * Map all Interrupts to PCI INTA
2581 */
2582 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2583 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2584
2585 tsi148_irq_exit(bridge, pdev);
2586
2587 vme_unregister_bridge(tsi148_bridge);
2588
2589 tsi148_crcsr_exit(tsi148_bridge, pdev);
2590
2591 /* resources are stored in link list */
2592 list_for_each(pos, &tsi148_bridge->dma_resources) {
2593 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2594 list_del(pos);
2595 kfree(dma_ctrlr);
2596 }
2597
2598 /* resources are stored in link list */
2599 list_for_each(pos, &tsi148_bridge->slave_resources) {
2600 slave_image = list_entry(pos, struct vme_slave_resource, list);
2601 list_del(pos);
2602 kfree(slave_image);
2603 }
2604
2605 /* resources are stored in link list */
2606 list_for_each(pos, &tsi148_bridge->master_resources) {
2607 master_image = list_entry(pos, struct vme_master_resource,
2608 list);
2609 list_del(pos);
2610 kfree(master_image);
2611 }
2612
2613 tsi148_irq_exit(bridge, pdev);
2614
2615 iounmap(bridge->base);
2616
2617 pci_release_regions(pdev);
2618
2619 pci_disable_device(pdev);
2620
2621 kfree(tsi148_bridge->driver_priv);
2622
2623 kfree(tsi148_bridge);
2624 }
2625
2626 static void __exit tsi148_exit(void)
2627 {
2628 pci_unregister_driver(&tsi148_driver);
2629 }
2630
2631 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2632 module_param(err_chk, bool, 0);
2633
2634 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2635 module_param(geoid, int, 0);
2636
2637 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2638 MODULE_LICENSE("GPL");
2639
2640 module_init(tsi148_init);
2641 module_exit(tsi148_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree