Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Linux/drivers/vme/bridges/vme_tsi148.c

  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 #include <linux/byteorder/generic.h>
 33 #include <linux/vme.h>
 34 
 35 #include "../vme_bridge.h"
 36 #include "vme_tsi148.h"
 37 
 38 static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
 39 static void tsi148_remove(struct pci_dev *);
 40 
 41 
 42 /* Module parameter */
 43 static bool err_chk;
 44 static int geoid;
 45 
 46 static const char driver_name[] = "vme_tsi148";
 47 
 48 static const struct pci_device_id tsi148_ids[] = {
 49         { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
 50         { },
 51 };
 52 
 53 static struct pci_driver tsi148_driver = {
 54         .name = driver_name,
 55         .id_table = tsi148_ids,
 56         .probe = tsi148_probe,
 57         .remove = tsi148_remove,
 58 };
 59 
 60 static void reg_join(unsigned int high, unsigned int low,
 61         unsigned long long *variable)
 62 {
 63         *variable = (unsigned long long)high << 32;
 64         *variable |= (unsigned long long)low;
 65 }
 66 
 67 static void reg_split(unsigned long long variable, unsigned int *high,
 68         unsigned int *low)
 69 {
 70         *low = (unsigned int)variable & 0xFFFFFFFF;
 71         *high = (unsigned int)(variable >> 32);
 72 }
 73 
 74 /*
 75  * Wakes up DMA queue.
 76  */
 77 static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
 78         int channel_mask)
 79 {
 80         u32 serviced = 0;
 81 
 82         if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
 83                 wake_up(&bridge->dma_queue[0]);
 84                 serviced |= TSI148_LCSR_INTC_DMA0C;
 85         }
 86         if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
 87                 wake_up(&bridge->dma_queue[1]);
 88                 serviced |= TSI148_LCSR_INTC_DMA1C;
 89         }
 90 
 91         return serviced;
 92 }
 93 
 94 /*
 95  * Wake up location monitor queue
 96  */
 97 static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
 98 {
 99         int i;
100         u32 serviced = 0;
101 
102         for (i = 0; i < 4; i++) {
103                 if (stat & TSI148_LCSR_INTS_LMS[i]) {
104                         /* We only enable interrupts if the callback is set */
105                         bridge->lm_callback[i](i);
106                         serviced |= TSI148_LCSR_INTC_LMC[i];
107                 }
108         }
109 
110         return serviced;
111 }
112 
113 /*
114  * Wake up mail box queue.
115  *
116  * XXX This functionality is not exposed up though API.
117  */
118 static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
119 {
120         int i;
121         u32 val;
122         u32 serviced = 0;
123         struct tsi148_driver *bridge;
124 
125         bridge = tsi148_bridge->driver_priv;
126 
127         for (i = 0; i < 4; i++) {
128                 if (stat & TSI148_LCSR_INTS_MBS[i]) {
129                         val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
130                         dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
131                                 ": 0x%x\n", i, val);
132                         serviced |= TSI148_LCSR_INTC_MBC[i];
133                 }
134         }
135 
136         return serviced;
137 }
138 
139 /*
140  * Display error & status message when PERR (PCI) exception interrupt occurs.
141  */
142 static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
143 {
144         struct tsi148_driver *bridge;
145 
146         bridge = tsi148_bridge->driver_priv;
147 
148         dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
149                 "attributes: %08x\n",
150                 ioread32be(bridge->base + TSI148_LCSR_EDPAU),
151                 ioread32be(bridge->base + TSI148_LCSR_EDPAL),
152                 ioread32be(bridge->base + TSI148_LCSR_EDPAT));
153 
154         dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
155                 "completion reg: %08x\n",
156                 ioread32be(bridge->base + TSI148_LCSR_EDPXA),
157                 ioread32be(bridge->base + TSI148_LCSR_EDPXS));
158 
159         iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
160 
161         return TSI148_LCSR_INTC_PERRC;
162 }
163 
164 /*
165  * Save address and status when VME error interrupt occurs.
166  */
167 static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
168 {
169         unsigned int error_addr_high, error_addr_low;
170         unsigned long long error_addr;
171         u32 error_attrib;
172         struct vme_bus_error *error = NULL;
173         struct tsi148_driver *bridge;
174 
175         bridge = tsi148_bridge->driver_priv;
176 
177         error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
178         error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
179         error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
180 
181         reg_join(error_addr_high, error_addr_low, &error_addr);
182 
183         /* Check for exception register overflow (we have lost error data) */
184         if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
185                 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
186                         "Occurred\n");
187         }
188 
189         if (err_chk) {
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,
197                                 "Unable to alloc memory for VMEbus Error reporting\n");
198                 }
199         }
200 
201         if (!error) {
202                 dev_err(tsi148_bridge->parent,
203                         "VME Bus Error at address: 0x%llx, attributes: %08x\n",
204                         error_addr, error_attrib);
205         }
206 
207         /* Clear Status */
208         iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
209 
210         return TSI148_LCSR_INTC_VERRC;
211 }
212 
213 /*
214  * Wake up IACK queue.
215  */
216 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
217 {
218         wake_up(&bridge->iack_queue);
219 
220         return TSI148_LCSR_INTC_IACKC;
221 }
222 
223 /*
224  * Calling VME bus interrupt callback if provided.
225  */
226 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
227         u32 stat)
228 {
229         int vec, i, serviced = 0;
230         struct tsi148_driver *bridge;
231 
232         bridge = tsi148_bridge->driver_priv;
233 
234         for (i = 7; i > 0; i--) {
235                 if (stat & (1 << i)) {
236                         /*
237                          * Note: Even though the registers are defined as
238                          * 32-bits in the spec, we only want to issue 8-bit
239                          * IACK cycles on the bus, read from offset 3.
240                          */
241                         vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
242 
243                         vme_irq_handler(tsi148_bridge, i, vec);
244 
245                         serviced |= (1 << i);
246                 }
247         }
248 
249         return serviced;
250 }
251 
252 /*
253  * Top level interrupt handler.  Clears appropriate interrupt status bits and
254  * then calls appropriate sub handler(s).
255  */
256 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
257 {
258         u32 stat, enable, serviced = 0;
259         struct vme_bridge *tsi148_bridge;
260         struct tsi148_driver *bridge;
261 
262         tsi148_bridge = ptr;
263 
264         bridge = tsi148_bridge->driver_priv;
265 
266         /* Determine which interrupts are unmasked and set */
267         enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
268         stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
269 
270         /* Only look at unmasked interrupts */
271         stat &= enable;
272 
273         if (unlikely(!stat))
274                 return IRQ_NONE;
275 
276         /* Call subhandlers as appropriate */
277         /* DMA irqs */
278         if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
279                 serviced |= tsi148_DMA_irqhandler(bridge, stat);
280 
281         /* Location monitor irqs */
282         if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
283                         TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
284                 serviced |= tsi148_LM_irqhandler(bridge, stat);
285 
286         /* Mail box irqs */
287         if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
288                         TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
289                 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
290 
291         /* PCI bus error */
292         if (stat & TSI148_LCSR_INTS_PERRS)
293                 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
294 
295         /* VME bus error */
296         if (stat & TSI148_LCSR_INTS_VERRS)
297                 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
298 
299         /* IACK irq */
300         if (stat & TSI148_LCSR_INTS_IACKS)
301                 serviced |= tsi148_IACK_irqhandler(bridge);
302 
303         /* VME bus irqs */
304         if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
305                         TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
306                         TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
307                         TSI148_LCSR_INTS_IRQ1S))
308                 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
309 
310         /* Clear serviced interrupts */
311         iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
312 
313         return IRQ_HANDLED;
314 }
315 
316 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
317 {
318         int result;
319         unsigned int tmp;
320         struct pci_dev *pdev;
321         struct tsi148_driver *bridge;
322 
323         pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
324 
325         bridge = tsi148_bridge->driver_priv;
326 
327         /* Initialise list for VME bus errors */
328         INIT_LIST_HEAD(&tsi148_bridge->vme_errors);
329 
330         mutex_init(&tsi148_bridge->irq_mtx);
331 
332         result = request_irq(pdev->irq,
333                              tsi148_irqhandler,
334                              IRQF_SHARED,
335                              driver_name, tsi148_bridge);
336         if (result) {
337                 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
338                         "vector %02X\n", pdev->irq);
339                 return result;
340         }
341 
342         /* Enable and unmask interrupts */
343         tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
344                 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
345                 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
346                 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
347                 TSI148_LCSR_INTEO_IACKEO;
348 
349         /* This leaves the following interrupts masked.
350          * TSI148_LCSR_INTEO_VIEEO
351          * TSI148_LCSR_INTEO_SYSFLEO
352          * TSI148_LCSR_INTEO_ACFLEO
353          */
354 
355         /* Don't enable Location Monitor interrupts here - they will be
356          * enabled when the location monitors are properly configured and
357          * a callback has been attached.
358          * TSI148_LCSR_INTEO_LM0EO
359          * TSI148_LCSR_INTEO_LM1EO
360          * TSI148_LCSR_INTEO_LM2EO
361          * TSI148_LCSR_INTEO_LM3EO
362          */
363 
364         /* Don't enable VME interrupts until we add a handler, else the board
365          * will respond to it and we don't want that unless it knows how to
366          * properly deal with it.
367          * TSI148_LCSR_INTEO_IRQ7EO
368          * TSI148_LCSR_INTEO_IRQ6EO
369          * TSI148_LCSR_INTEO_IRQ5EO
370          * TSI148_LCSR_INTEO_IRQ4EO
371          * TSI148_LCSR_INTEO_IRQ3EO
372          * TSI148_LCSR_INTEO_IRQ2EO
373          * TSI148_LCSR_INTEO_IRQ1EO
374          */
375 
376         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
377         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
378 
379         return 0;
380 }
381 
382 static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
383         struct pci_dev *pdev)
384 {
385         struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
386 
387         /* Turn off interrupts */
388         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
389         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
390 
391         /* Clear all interrupts */
392         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
393 
394         /* Detach interrupt handler */
395         free_irq(pdev->irq, tsi148_bridge);
396 }
397 
398 /*
399  * Check to see if an IACk has been received, return true (1) or false (0).
400  */
401 static int tsi148_iack_received(struct tsi148_driver *bridge)
402 {
403         u32 tmp;
404 
405         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
406 
407         if (tmp & TSI148_LCSR_VICR_IRQS)
408                 return 0;
409         else
410                 return 1;
411 }
412 
413 /*
414  * Configure VME interrupt
415  */
416 static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
417         int state, int sync)
418 {
419         struct pci_dev *pdev;
420         u32 tmp;
421         struct tsi148_driver *bridge;
422 
423         bridge = tsi148_bridge->driver_priv;
424 
425         /* We need to do the ordering differently for enabling and disabling */
426         if (state == 0) {
427                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
428                 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
429                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
430 
431                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
432                 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
433                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
434 
435                 if (sync != 0) {
436                         pdev = container_of(tsi148_bridge->parent,
437                                 struct pci_dev, dev);
438 
439                         synchronize_irq(pdev->irq);
440                 }
441         } else {
442                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
443                 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
444                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
445 
446                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
447                 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
448                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
449         }
450 }
451 
452 /*
453  * Generate a VME bus interrupt at the requested level & vector. Wait for
454  * interrupt to be acked.
455  */
456 static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
457         int statid)
458 {
459         u32 tmp;
460         struct tsi148_driver *bridge;
461 
462         bridge = tsi148_bridge->driver_priv;
463 
464         mutex_lock(&bridge->vme_int);
465 
466         /* Read VICR register */
467         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
468 
469         /* Set Status/ID */
470         tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
471                 (statid & TSI148_LCSR_VICR_STID_M);
472         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
473 
474         /* Assert VMEbus IRQ */
475         tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
476         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
477 
478         /* XXX Consider implementing a timeout? */
479         wait_event_interruptible(bridge->iack_queue,
480                 tsi148_iack_received(bridge));
481 
482         mutex_unlock(&bridge->vme_int);
483 
484         return 0;
485 }
486 
487 /*
488  * Find the first error in this address range
489  */
490 static struct vme_bus_error *tsi148_find_error(struct vme_bridge *tsi148_bridge,
491         u32 aspace, unsigned long long address, size_t count)
492 {
493         struct list_head *err_pos;
494         struct vme_bus_error *vme_err, *valid = NULL;
495         unsigned long long bound;
496 
497         bound = address + count;
498 
499         /*
500          * XXX We are currently not looking at the address space when parsing
501          *     for errors. This is because parsing the Address Modifier Codes
502          *     is going to be quite resource intensive to do properly. We
503          *     should be OK just looking at the addresses and this is certainly
504          *     much better than what we had before.
505          */
506         err_pos = NULL;
507         /* Iterate through errors */
508         list_for_each(err_pos, &tsi148_bridge->vme_errors) {
509                 vme_err = list_entry(err_pos, struct vme_bus_error, list);
510                 if ((vme_err->address >= address) &&
511                         (vme_err->address < bound)) {
512 
513                         valid = vme_err;
514                         break;
515                 }
516         }
517 
518         return valid;
519 }
520 
521 /*
522  * Clear errors in the provided address range.
523  */
524 static void tsi148_clear_errors(struct vme_bridge *tsi148_bridge,
525         u32 aspace, unsigned long long address, size_t count)
526 {
527         struct list_head *err_pos, *temp;
528         struct vme_bus_error *vme_err;
529         unsigned long long bound;
530 
531         bound = address + count;
532 
533         /*
534          * XXX We are currently not looking at the address space when parsing
535          *     for errors. This is because parsing the Address Modifier Codes
536          *     is going to be quite resource intensive to do properly. We
537          *     should be OK just looking at the addresses and this is certainly
538          *     much better than what we had before.
539          */
540         err_pos = NULL;
541         /* Iterate through errors */
542         list_for_each_safe(err_pos, temp, &tsi148_bridge->vme_errors) {
543                 vme_err = list_entry(err_pos, struct vme_bus_error, list);
544 
545                 if ((vme_err->address >= address) &&
546                         (vme_err->address < bound)) {
547 
548                         list_del(err_pos);
549                         kfree(vme_err);
550                 }
551         }
552 }
553 
554 /*
555  * Initialize a slave window with the requested attributes.
556  */
557 static int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
558         unsigned long long vme_base, unsigned long long size,
559         dma_addr_t pci_base, u32 aspace, u32 cycle)
560 {
561         unsigned int i, addr = 0, granularity = 0;
562         unsigned int temp_ctl = 0;
563         unsigned int vme_base_low, vme_base_high;
564         unsigned int vme_bound_low, vme_bound_high;
565         unsigned int pci_offset_low, pci_offset_high;
566         unsigned long long vme_bound, pci_offset;
567         struct vme_bridge *tsi148_bridge;
568         struct tsi148_driver *bridge;
569 
570         tsi148_bridge = image->parent;
571         bridge = tsi148_bridge->driver_priv;
572 
573         i = image->number;
574 
575         switch (aspace) {
576         case VME_A16:
577                 granularity = 0x10;
578                 addr |= TSI148_LCSR_ITAT_AS_A16;
579                 break;
580         case VME_A24:
581                 granularity = 0x1000;
582                 addr |= TSI148_LCSR_ITAT_AS_A24;
583                 break;
584         case VME_A32:
585                 granularity = 0x10000;
586                 addr |= TSI148_LCSR_ITAT_AS_A32;
587                 break;
588         case VME_A64:
589                 granularity = 0x10000;
590                 addr |= TSI148_LCSR_ITAT_AS_A64;
591                 break;
592         case VME_CRCSR:
593         case VME_USER1:
594         case VME_USER2:
595         case VME_USER3:
596         case VME_USER4:
597         default:
598                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
599                 return -EINVAL;
600                 break;
601         }
602 
603         /* Convert 64-bit variables to 2x 32-bit variables */
604         reg_split(vme_base, &vme_base_high, &vme_base_low);
605 
606         /*
607          * Bound address is a valid address for the window, adjust
608          * accordingly
609          */
610         vme_bound = vme_base + size - granularity;
611         reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
612         pci_offset = (unsigned long long)pci_base - vme_base;
613         reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
614 
615         if (vme_base_low & (granularity - 1)) {
616                 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
617                 return -EINVAL;
618         }
619         if (vme_bound_low & (granularity - 1)) {
620                 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
621                 return -EINVAL;
622         }
623         if (pci_offset_low & (granularity - 1)) {
624                 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
625                         "alignment\n");
626                 return -EINVAL;
627         }
628 
629         /*  Disable while we are mucking around */
630         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
631                 TSI148_LCSR_OFFSET_ITAT);
632         temp_ctl &= ~TSI148_LCSR_ITAT_EN;
633         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
634                 TSI148_LCSR_OFFSET_ITAT);
635 
636         /* Setup mapping */
637         iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
638                 TSI148_LCSR_OFFSET_ITSAU);
639         iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
640                 TSI148_LCSR_OFFSET_ITSAL);
641         iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
642                 TSI148_LCSR_OFFSET_ITEAU);
643         iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
644                 TSI148_LCSR_OFFSET_ITEAL);
645         iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
646                 TSI148_LCSR_OFFSET_ITOFU);
647         iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
648                 TSI148_LCSR_OFFSET_ITOFL);
649 
650         /* Setup 2eSST speeds */
651         temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
652         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
653         case VME_2eSST160:
654                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
655                 break;
656         case VME_2eSST267:
657                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
658                 break;
659         case VME_2eSST320:
660                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
661                 break;
662         }
663 
664         /* Setup cycle types */
665         temp_ctl &= ~(0x1F << 7);
666         if (cycle & VME_BLT)
667                 temp_ctl |= TSI148_LCSR_ITAT_BLT;
668         if (cycle & VME_MBLT)
669                 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
670         if (cycle & VME_2eVME)
671                 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
672         if (cycle & VME_2eSST)
673                 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
674         if (cycle & VME_2eSSTB)
675                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
676 
677         /* Setup address space */
678         temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
679         temp_ctl |= addr;
680 
681         temp_ctl &= ~0xF;
682         if (cycle & VME_SUPER)
683                 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
684         if (cycle & VME_USER)
685                 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
686         if (cycle & VME_PROG)
687                 temp_ctl |= TSI148_LCSR_ITAT_PGM;
688         if (cycle & VME_DATA)
689                 temp_ctl |= TSI148_LCSR_ITAT_DATA;
690 
691         /* Write ctl reg without enable */
692         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
693                 TSI148_LCSR_OFFSET_ITAT);
694 
695         if (enabled)
696                 temp_ctl |= TSI148_LCSR_ITAT_EN;
697 
698         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
699                 TSI148_LCSR_OFFSET_ITAT);
700 
701         return 0;
702 }
703 
704 /*
705  * Get slave window configuration.
706  */
707 static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
708         unsigned long long *vme_base, unsigned long long *size,
709         dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
710 {
711         unsigned int i, granularity = 0, ctl = 0;
712         unsigned int vme_base_low, vme_base_high;
713         unsigned int vme_bound_low, vme_bound_high;
714         unsigned int pci_offset_low, pci_offset_high;
715         unsigned long long vme_bound, pci_offset;
716         struct tsi148_driver *bridge;
717 
718         bridge = image->parent->driver_priv;
719 
720         i = image->number;
721 
722         /* Read registers */
723         ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
724                 TSI148_LCSR_OFFSET_ITAT);
725 
726         vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
727                 TSI148_LCSR_OFFSET_ITSAU);
728         vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
729                 TSI148_LCSR_OFFSET_ITSAL);
730         vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
731                 TSI148_LCSR_OFFSET_ITEAU);
732         vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
733                 TSI148_LCSR_OFFSET_ITEAL);
734         pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
735                 TSI148_LCSR_OFFSET_ITOFU);
736         pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
737                 TSI148_LCSR_OFFSET_ITOFL);
738 
739         /* Convert 64-bit variables to 2x 32-bit variables */
740         reg_join(vme_base_high, vme_base_low, vme_base);
741         reg_join(vme_bound_high, vme_bound_low, &vme_bound);
742         reg_join(pci_offset_high, pci_offset_low, &pci_offset);
743 
744         *pci_base = (dma_addr_t)vme_base + pci_offset;
745 
746         *enabled = 0;
747         *aspace = 0;
748         *cycle = 0;
749 
750         if (ctl & TSI148_LCSR_ITAT_EN)
751                 *enabled = 1;
752 
753         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
754                 granularity = 0x10;
755                 *aspace |= VME_A16;
756         }
757         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
758                 granularity = 0x1000;
759                 *aspace |= VME_A24;
760         }
761         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
762                 granularity = 0x10000;
763                 *aspace |= VME_A32;
764         }
765         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
766                 granularity = 0x10000;
767                 *aspace |= VME_A64;
768         }
769 
770         /* Need granularity before we set the size */
771         *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
772 
773 
774         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
775                 *cycle |= VME_2eSST160;
776         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
777                 *cycle |= VME_2eSST267;
778         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
779                 *cycle |= VME_2eSST320;
780 
781         if (ctl & TSI148_LCSR_ITAT_BLT)
782                 *cycle |= VME_BLT;
783         if (ctl & TSI148_LCSR_ITAT_MBLT)
784                 *cycle |= VME_MBLT;
785         if (ctl & TSI148_LCSR_ITAT_2eVME)
786                 *cycle |= VME_2eVME;
787         if (ctl & TSI148_LCSR_ITAT_2eSST)
788                 *cycle |= VME_2eSST;
789         if (ctl & TSI148_LCSR_ITAT_2eSSTB)
790                 *cycle |= VME_2eSSTB;
791 
792         if (ctl & TSI148_LCSR_ITAT_SUPR)
793                 *cycle |= VME_SUPER;
794         if (ctl & TSI148_LCSR_ITAT_NPRIV)
795                 *cycle |= VME_USER;
796         if (ctl & TSI148_LCSR_ITAT_PGM)
797                 *cycle |= VME_PROG;
798         if (ctl & TSI148_LCSR_ITAT_DATA)
799                 *cycle |= VME_DATA;
800 
801         return 0;
802 }
803 
804 /*
805  * Allocate and map PCI Resource
806  */
807 static int tsi148_alloc_resource(struct vme_master_resource *image,
808         unsigned long long size)
809 {
810         unsigned long long existing_size;
811         int retval = 0;
812         struct pci_dev *pdev;
813         struct vme_bridge *tsi148_bridge;
814 
815         tsi148_bridge = image->parent;
816 
817         pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
818 
819         existing_size = (unsigned long long)(image->bus_resource.end -
820                 image->bus_resource.start);
821 
822         /* If the existing size is OK, return */
823         if ((size != 0) && (existing_size == (size - 1)))
824                 return 0;
825 
826         if (existing_size != 0) {
827                 iounmap(image->kern_base);
828                 image->kern_base = NULL;
829                 kfree(image->bus_resource.name);
830                 release_resource(&image->bus_resource);
831                 memset(&image->bus_resource, 0, sizeof(struct resource));
832         }
833 
834         /* Exit here if size is zero */
835         if (size == 0)
836                 return 0;
837 
838         if (image->bus_resource.name == NULL) {
839                 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
840                 if (image->bus_resource.name == NULL) {
841                         dev_err(tsi148_bridge->parent, "Unable to allocate "
842                                 "memory for resource name\n");
843                         retval = -ENOMEM;
844                         goto err_name;
845                 }
846         }
847 
848         sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
849                 image->number);
850 
851         image->bus_resource.start = 0;
852         image->bus_resource.end = (unsigned long)size;
853         image->bus_resource.flags = IORESOURCE_MEM;
854 
855         retval = pci_bus_alloc_resource(pdev->bus,
856                 &image->bus_resource, size, size, PCIBIOS_MIN_MEM,
857                 0, NULL, NULL);
858         if (retval) {
859                 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
860                         "resource for window %d size 0x%lx start 0x%lx\n",
861                         image->number, (unsigned long)size,
862                         (unsigned long)image->bus_resource.start);
863                 goto err_resource;
864         }
865 
866         image->kern_base = ioremap_nocache(
867                 image->bus_resource.start, size);
868         if (image->kern_base == NULL) {
869                 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
870                 retval = -ENOMEM;
871                 goto err_remap;
872         }
873 
874         return 0;
875 
876 err_remap:
877         release_resource(&image->bus_resource);
878 err_resource:
879         kfree(image->bus_resource.name);
880         memset(&image->bus_resource, 0, sizeof(struct resource));
881 err_name:
882         return retval;
883 }
884 
885 /*
886  * Free and unmap PCI Resource
887  */
888 static void tsi148_free_resource(struct vme_master_resource *image)
889 {
890         iounmap(image->kern_base);
891         image->kern_base = NULL;
892         release_resource(&image->bus_resource);
893         kfree(image->bus_resource.name);
894         memset(&image->bus_resource, 0, sizeof(struct resource));
895 }
896 
897 /*
898  * Set the attributes of an outbound window.
899  */
900 static int tsi148_master_set(struct vme_master_resource *image, int enabled,
901         unsigned long long vme_base, unsigned long long size, u32 aspace,
902         u32 cycle, u32 dwidth)
903 {
904         int retval = 0;
905         unsigned int i;
906         unsigned int temp_ctl = 0;
907         unsigned int pci_base_low, pci_base_high;
908         unsigned int pci_bound_low, pci_bound_high;
909         unsigned int vme_offset_low, vme_offset_high;
910         unsigned long long pci_bound, vme_offset, pci_base;
911         struct vme_bridge *tsi148_bridge;
912         struct tsi148_driver *bridge;
913 
914         tsi148_bridge = image->parent;
915 
916         bridge = tsi148_bridge->driver_priv;
917 
918         /* Verify input data */
919         if (vme_base & 0xFFFF) {
920                 dev_err(tsi148_bridge->parent, "Invalid VME Window "
921                         "alignment\n");
922                 retval = -EINVAL;
923                 goto err_window;
924         }
925 
926         if ((size == 0) && (enabled != 0)) {
927                 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
928                         "enabled windows\n");
929                 retval = -EINVAL;
930                 goto err_window;
931         }
932 
933         spin_lock(&image->lock);
934 
935         /* Let's allocate the resource here rather than further up the stack as
936          * it avoids pushing loads of bus dependent stuff up the stack. If size
937          * is zero, any existing resource will be freed.
938          */
939         retval = tsi148_alloc_resource(image, size);
940         if (retval) {
941                 spin_unlock(&image->lock);
942                 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
943                         "resource\n");
944                 goto err_res;
945         }
946 
947         if (size == 0) {
948                 pci_base = 0;
949                 pci_bound = 0;
950                 vme_offset = 0;
951         } else {
952                 pci_base = (unsigned long long)image->bus_resource.start;
953 
954                 /*
955                  * Bound address is a valid address for the window, adjust
956                  * according to window granularity.
957                  */
958                 pci_bound = pci_base + (size - 0x10000);
959                 vme_offset = vme_base - pci_base;
960         }
961 
962         /* Convert 64-bit variables to 2x 32-bit variables */
963         reg_split(pci_base, &pci_base_high, &pci_base_low);
964         reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
965         reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
966 
967         if (pci_base_low & 0xFFFF) {
968                 spin_unlock(&image->lock);
969                 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
970                 retval = -EINVAL;
971                 goto err_gran;
972         }
973         if (pci_bound_low & 0xFFFF) {
974                 spin_unlock(&image->lock);
975                 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
976                 retval = -EINVAL;
977                 goto err_gran;
978         }
979         if (vme_offset_low & 0xFFFF) {
980                 spin_unlock(&image->lock);
981                 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
982                         "alignment\n");
983                 retval = -EINVAL;
984                 goto err_gran;
985         }
986 
987         i = image->number;
988 
989         /* Disable while we are mucking around */
990         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
991                 TSI148_LCSR_OFFSET_OTAT);
992         temp_ctl &= ~TSI148_LCSR_OTAT_EN;
993         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
994                 TSI148_LCSR_OFFSET_OTAT);
995 
996         /* Setup 2eSST speeds */
997         temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
998         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
999         case VME_2eSST160:
1000                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
1001                 break;
1002         case VME_2eSST267:
1003                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
1004                 break;
1005         case VME_2eSST320:
1006                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
1007                 break;
1008         }
1009 
1010         /* Setup cycle types */
1011         if (cycle & VME_BLT) {
1012                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1013                 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
1014         }
1015         if (cycle & VME_MBLT) {
1016                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1017                 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
1018         }
1019         if (cycle & VME_2eVME) {
1020                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1021                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
1022         }
1023         if (cycle & VME_2eSST) {
1024                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1025                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
1026         }
1027         if (cycle & VME_2eSSTB) {
1028                 dev_warn(tsi148_bridge->parent, "Currently not setting "
1029                         "Broadcast Select Registers\n");
1030                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1031                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
1032         }
1033 
1034         /* Setup data width */
1035         temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
1036         switch (dwidth) {
1037         case VME_D16:
1038                 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
1039                 break;
1040         case VME_D32:
1041                 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
1042                 break;
1043         default:
1044                 spin_unlock(&image->lock);
1045                 dev_err(tsi148_bridge->parent, "Invalid data width\n");
1046                 retval = -EINVAL;
1047                 goto err_dwidth;
1048         }
1049 
1050         /* Setup address space */
1051         temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
1052         switch (aspace) {
1053         case VME_A16:
1054                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
1055                 break;
1056         case VME_A24:
1057                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
1058                 break;
1059         case VME_A32:
1060                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
1061                 break;
1062         case VME_A64:
1063                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
1064                 break;
1065         case VME_CRCSR:
1066                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
1067                 break;
1068         case VME_USER1:
1069                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
1070                 break;
1071         case VME_USER2:
1072                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
1073                 break;
1074         case VME_USER3:
1075                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
1076                 break;
1077         case VME_USER4:
1078                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
1079                 break;
1080         default:
1081                 spin_unlock(&image->lock);
1082                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1083                 retval = -EINVAL;
1084                 goto err_aspace;
1085                 break;
1086         }
1087 
1088         temp_ctl &= ~(3<<4);
1089         if (cycle & VME_SUPER)
1090                 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1091         if (cycle & VME_PROG)
1092                 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1093 
1094         /* Setup mapping */
1095         iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1096                 TSI148_LCSR_OFFSET_OTSAU);
1097         iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1098                 TSI148_LCSR_OFFSET_OTSAL);
1099         iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1100                 TSI148_LCSR_OFFSET_OTEAU);
1101         iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1102                 TSI148_LCSR_OFFSET_OTEAL);
1103         iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1104                 TSI148_LCSR_OFFSET_OTOFU);
1105         iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1106                 TSI148_LCSR_OFFSET_OTOFL);
1107 
1108         /* Write ctl reg without enable */
1109         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1110                 TSI148_LCSR_OFFSET_OTAT);
1111 
1112         if (enabled)
1113                 temp_ctl |= TSI148_LCSR_OTAT_EN;
1114 
1115         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1116                 TSI148_LCSR_OFFSET_OTAT);
1117 
1118         spin_unlock(&image->lock);
1119         return 0;
1120 
1121 err_aspace:
1122 err_dwidth:
1123 err_gran:
1124         tsi148_free_resource(image);
1125 err_res:
1126 err_window:
1127         return retval;
1128 
1129 }
1130 
1131 /*
1132  * Set the attributes of an outbound window.
1133  *
1134  * XXX Not parsing prefetch information.
1135  */
1136 static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1137         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1138         u32 *cycle, u32 *dwidth)
1139 {
1140         unsigned int i, ctl;
1141         unsigned int pci_base_low, pci_base_high;
1142         unsigned int pci_bound_low, pci_bound_high;
1143         unsigned int vme_offset_low, vme_offset_high;
1144 
1145         unsigned long long pci_base, pci_bound, vme_offset;
1146         struct tsi148_driver *bridge;
1147 
1148         bridge = image->parent->driver_priv;
1149 
1150         i = image->number;
1151 
1152         ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1153                 TSI148_LCSR_OFFSET_OTAT);
1154 
1155         pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1156                 TSI148_LCSR_OFFSET_OTSAU);
1157         pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1158                 TSI148_LCSR_OFFSET_OTSAL);
1159         pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1160                 TSI148_LCSR_OFFSET_OTEAU);
1161         pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1162                 TSI148_LCSR_OFFSET_OTEAL);
1163         vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1164                 TSI148_LCSR_OFFSET_OTOFU);
1165         vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1166                 TSI148_LCSR_OFFSET_OTOFL);
1167 
1168         /* Convert 64-bit variables to 2x 32-bit variables */
1169         reg_join(pci_base_high, pci_base_low, &pci_base);
1170         reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1171         reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1172 
1173         *vme_base = pci_base + vme_offset;
1174         *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1175 
1176         *enabled = 0;
1177         *aspace = 0;
1178         *cycle = 0;
1179         *dwidth = 0;
1180 
1181         if (ctl & TSI148_LCSR_OTAT_EN)
1182                 *enabled = 1;
1183 
1184         /* Setup address space */
1185         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1186                 *aspace |= VME_A16;
1187         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1188                 *aspace |= VME_A24;
1189         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1190                 *aspace |= VME_A32;
1191         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1192                 *aspace |= VME_A64;
1193         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1194                 *aspace |= VME_CRCSR;
1195         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1196                 *aspace |= VME_USER1;
1197         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1198                 *aspace |= VME_USER2;
1199         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1200                 *aspace |= VME_USER3;
1201         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1202                 *aspace |= VME_USER4;
1203 
1204         /* Setup 2eSST speeds */
1205         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1206                 *cycle |= VME_2eSST160;
1207         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1208                 *cycle |= VME_2eSST267;
1209         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1210                 *cycle |= VME_2eSST320;
1211 
1212         /* Setup cycle types */
1213         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1214                 *cycle |= VME_SCT;
1215         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1216                 *cycle |= VME_BLT;
1217         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1218                 *cycle |= VME_MBLT;
1219         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1220                 *cycle |= VME_2eVME;
1221         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1222                 *cycle |= VME_2eSST;
1223         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1224                 *cycle |= VME_2eSSTB;
1225 
1226         if (ctl & TSI148_LCSR_OTAT_SUP)
1227                 *cycle |= VME_SUPER;
1228         else
1229                 *cycle |= VME_USER;
1230 
1231         if (ctl & TSI148_LCSR_OTAT_PGM)
1232                 *cycle |= VME_PROG;
1233         else
1234                 *cycle |= VME_DATA;
1235 
1236         /* Setup data width */
1237         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1238                 *dwidth = VME_D16;
1239         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1240                 *dwidth = VME_D32;
1241 
1242         return 0;
1243 }
1244 
1245 
1246 static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1247         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1248         u32 *cycle, u32 *dwidth)
1249 {
1250         int retval;
1251 
1252         spin_lock(&image->lock);
1253 
1254         retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1255                 cycle, dwidth);
1256 
1257         spin_unlock(&image->lock);
1258 
1259         return retval;
1260 }
1261 
1262 static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1263         size_t count, loff_t offset)
1264 {
1265         int retval, enabled;
1266         unsigned long long vme_base, size;
1267         u32 aspace, cycle, dwidth;
1268         struct vme_bus_error *vme_err = NULL;
1269         struct vme_bridge *tsi148_bridge;
1270         void __iomem *addr = image->kern_base + offset;
1271         unsigned int done = 0;
1272         unsigned int count32;
1273 
1274         tsi148_bridge = image->parent;
1275 
1276         spin_lock(&image->lock);
1277 
1278         /* The following code handles VME address alignment. We cannot use
1279          * memcpy_xxx directly here because it may cut small data transfers in
1280          * to 8-bit cycles, thus making D16 cycle impossible.
1281          * On the other hand, the bridge itself assures that the maximum data
1282          * cycle configured for the transfer is used and splits it
1283          * automatically for non-aligned addresses, so we don't want the
1284          * overhead of needlessly forcing small transfers for the entire cycle.
1285          */
1286         if ((uintptr_t)addr & 0x1) {
1287                 *(u8 *)buf = ioread8(addr);
1288                 done += 1;
1289                 if (done == count)
1290                         goto out;
1291         }
1292         if ((uintptr_t)(addr + done) & 0x2) {
1293                 if ((count - done) < 2) {
1294                         *(u8 *)(buf + done) = ioread8(addr + done);
1295                         done += 1;
1296                         goto out;
1297                 } else {
1298                         *(u16 *)(buf + done) = ioread16(addr + done);
1299                         done += 2;
1300                 }
1301         }
1302 
1303         count32 = (count - done) & ~0x3;
1304         if (count32 > 0) {
1305                 memcpy_fromio(buf + done, addr + done, count32);
1306                 done += count32;
1307         }
1308 
1309         if ((count - done) & 0x2) {
1310                 *(u16 *)(buf + done) = ioread16(addr + done);
1311                 done += 2;
1312         }
1313         if ((count - done) & 0x1) {
1314                 *(u8 *)(buf + done) = ioread8(addr + done);
1315                 done += 1;
1316         }
1317 
1318 out:
1319         retval = count;
1320 
1321         if (!err_chk)
1322                 goto skip_chk;
1323 
1324         __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1325                 &dwidth);
1326 
1327         vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1328                 count);
1329         if (vme_err != NULL) {
1330                 dev_err(image->parent->parent, "First VME read error detected "
1331                         "an at address 0x%llx\n", vme_err->address);
1332                 retval = vme_err->address - (vme_base + offset);
1333                 /* Clear down save errors in this address range */
1334                 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1335                         count);
1336         }
1337 
1338 skip_chk:
1339         spin_unlock(&image->lock);
1340 
1341         return retval;
1342 }
1343 
1344 
1345 static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1346         size_t count, loff_t offset)
1347 {
1348         int retval = 0, enabled;
1349         unsigned long long vme_base, size;
1350         u32 aspace, cycle, dwidth;
1351         void __iomem *addr = image->kern_base + offset;
1352         unsigned int done = 0;
1353         unsigned int count32;
1354 
1355         struct vme_bus_error *vme_err = NULL;
1356         struct vme_bridge *tsi148_bridge;
1357         struct tsi148_driver *bridge;
1358 
1359         tsi148_bridge = image->parent;
1360 
1361         bridge = tsi148_bridge->driver_priv;
1362 
1363         spin_lock(&image->lock);
1364 
1365         /* Here we apply for the same strategy we do in master_read
1366          * function in order to assure D16 cycle when required.
1367          */
1368         if ((uintptr_t)addr & 0x1) {
1369                 iowrite8(*(u8 *)buf, addr);
1370                 done += 1;
1371                 if (done == count)
1372                         goto out;
1373         }
1374         if ((uintptr_t)(addr + done) & 0x2) {
1375                 if ((count - done) < 2) {
1376                         iowrite8(*(u8 *)(buf + done), addr + done);
1377                         done += 1;
1378                         goto out;
1379                 } else {
1380                         iowrite16(*(u16 *)(buf + done), addr + done);
1381                         done += 2;
1382                 }
1383         }
1384 
1385         count32 = (count - done) & ~0x3;
1386         if (count32 > 0) {
1387                 memcpy_toio(addr + done, buf + done, count32);
1388                 done += count32;
1389         }
1390 
1391         if ((count - done) & 0x2) {
1392                 iowrite16(*(u16 *)(buf + done), addr + done);
1393                 done += 2;
1394         }
1395         if ((count - done) & 0x1) {
1396                 iowrite8(*(u8 *)(buf + done), addr + done);
1397                 done += 1;
1398         }
1399 
1400 out:
1401         retval = count;
1402 
1403         /*
1404          * Writes are posted. We need to do a read on the VME bus to flush out
1405          * all of the writes before we check for errors. We can't guarantee
1406          * that reading the data we have just written is safe. It is believed
1407          * that there isn't any read, write re-ordering, so we can read any
1408          * location in VME space, so lets read the Device ID from the tsi148's
1409          * own registers as mapped into CR/CSR space.
1410          *
1411          * We check for saved errors in the written address range/space.
1412          */
1413 
1414         if (!err_chk)
1415                 goto skip_chk;
1416 
1417         /*
1418          * Get window info first, to maximise the time that the buffers may
1419          * fluch on their own
1420          */
1421         __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1422                 &dwidth);
1423 
1424         ioread16(bridge->flush_image->kern_base + 0x7F000);
1425 
1426         vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1427                 count);
1428         if (vme_err != NULL) {
1429                 dev_warn(tsi148_bridge->parent, "First VME write error detected"
1430                         " an at address 0x%llx\n", vme_err->address);
1431                 retval = vme_err->address - (vme_base + offset);
1432                 /* Clear down save errors in this address range */
1433                 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1434                         count);
1435         }
1436 
1437 skip_chk:
1438         spin_unlock(&image->lock);
1439 
1440         return retval;
1441 }
1442 
1443 /*
1444  * Perform an RMW cycle on the VME bus.
1445  *
1446  * Requires a previously configured master window, returns final value.
1447  */
1448 static unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1449         unsigned int mask, unsigned int compare, unsigned int swap,
1450         loff_t offset)
1451 {
1452         unsigned long long pci_addr;
1453         unsigned int pci_addr_high, pci_addr_low;
1454         u32 tmp, result;
1455         int i;
1456         struct tsi148_driver *bridge;
1457 
1458         bridge = image->parent->driver_priv;
1459 
1460         /* Find the PCI address that maps to the desired VME address */
1461         i = image->number;
1462 
1463         /* Locking as we can only do one of these at a time */
1464         mutex_lock(&bridge->vme_rmw);
1465 
1466         /* Lock image */
1467         spin_lock(&image->lock);
1468 
1469         pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1470                 TSI148_LCSR_OFFSET_OTSAU);
1471         pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1472                 TSI148_LCSR_OFFSET_OTSAL);
1473 
1474         reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1475         reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1476 
1477         /* Configure registers */
1478         iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1479         iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1480         iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1481         iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1482         iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1483 
1484         /* Enable RMW */
1485         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1486         tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1487         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1488 
1489         /* Kick process off with a read to the required address. */
1490         result = ioread32be(image->kern_base + offset);
1491 
1492         /* Disable RMW */
1493         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1494         tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1495         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1496 
1497         spin_unlock(&image->lock);
1498 
1499         mutex_unlock(&bridge->vme_rmw);
1500 
1501         return result;
1502 }
1503 
1504 static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
1505         u32 aspace, u32 cycle, u32 dwidth)
1506 {
1507         u32 val;
1508 
1509         val = be32_to_cpu(*attr);
1510 
1511         /* Setup 2eSST speeds */
1512         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1513         case VME_2eSST160:
1514                 val |= TSI148_LCSR_DSAT_2eSSTM_160;
1515                 break;
1516         case VME_2eSST267:
1517                 val |= TSI148_LCSR_DSAT_2eSSTM_267;
1518                 break;
1519         case VME_2eSST320:
1520                 val |= TSI148_LCSR_DSAT_2eSSTM_320;
1521                 break;
1522         }
1523 
1524         /* Setup cycle types */
1525         if (cycle & VME_SCT)
1526                 val |= TSI148_LCSR_DSAT_TM_SCT;
1527 
1528         if (cycle & VME_BLT)
1529                 val |= TSI148_LCSR_DSAT_TM_BLT;
1530 
1531         if (cycle & VME_MBLT)
1532                 val |= TSI148_LCSR_DSAT_TM_MBLT;
1533 
1534         if (cycle & VME_2eVME)
1535                 val |= TSI148_LCSR_DSAT_TM_2eVME;
1536 
1537         if (cycle & VME_2eSST)
1538                 val |= TSI148_LCSR_DSAT_TM_2eSST;
1539 
1540         if (cycle & VME_2eSSTB) {
1541                 dev_err(dev, "Currently not setting Broadcast Select "
1542                         "Registers\n");
1543                 val |= TSI148_LCSR_DSAT_TM_2eSSTB;
1544         }
1545 
1546         /* Setup data width */
1547         switch (dwidth) {
1548         case VME_D16:
1549                 val |= TSI148_LCSR_DSAT_DBW_16;
1550                 break;
1551         case VME_D32:
1552                 val |= TSI148_LCSR_DSAT_DBW_32;
1553                 break;
1554         default:
1555                 dev_err(dev, "Invalid data width\n");
1556                 return -EINVAL;
1557         }
1558 
1559         /* Setup address space */
1560         switch (aspace) {
1561         case VME_A16:
1562                 val |= TSI148_LCSR_DSAT_AMODE_A16;
1563                 break;
1564         case VME_A24:
1565                 val |= TSI148_LCSR_DSAT_AMODE_A24;
1566                 break;
1567         case VME_A32:
1568                 val |= TSI148_LCSR_DSAT_AMODE_A32;
1569                 break;
1570         case VME_A64:
1571                 val |= TSI148_LCSR_DSAT_AMODE_A64;
1572                 break;
1573         case VME_CRCSR:
1574                 val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1575                 break;
1576         case VME_USER1:
1577                 val |= TSI148_LCSR_DSAT_AMODE_USER1;
1578                 break;
1579         case VME_USER2:
1580                 val |= TSI148_LCSR_DSAT_AMODE_USER2;
1581                 break;
1582         case VME_USER3:
1583                 val |= TSI148_LCSR_DSAT_AMODE_USER3;
1584                 break;
1585         case VME_USER4:
1586                 val |= TSI148_LCSR_DSAT_AMODE_USER4;
1587                 break;
1588         default:
1589                 dev_err(dev, "Invalid address space\n");
1590                 return -EINVAL;
1591                 break;
1592         }
1593 
1594         if (cycle & VME_SUPER)
1595                 val |= TSI148_LCSR_DSAT_SUP;
1596         if (cycle & VME_PROG)
1597                 val |= TSI148_LCSR_DSAT_PGM;
1598 
1599         *attr = cpu_to_be32(val);
1600 
1601         return 0;
1602 }
1603 
1604 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
1605         u32 aspace, u32 cycle, u32 dwidth)
1606 {
1607         u32 val;
1608 
1609         val = be32_to_cpu(*attr);
1610 
1611         /* Setup 2eSST speeds */
1612         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1613         case VME_2eSST160:
1614                 val |= TSI148_LCSR_DDAT_2eSSTM_160;
1615                 break;
1616         case VME_2eSST267:
1617                 val |= TSI148_LCSR_DDAT_2eSSTM_267;
1618                 break;
1619         case VME_2eSST320:
1620                 val |= TSI148_LCSR_DDAT_2eSSTM_320;
1621                 break;
1622         }
1623 
1624         /* Setup cycle types */
1625         if (cycle & VME_SCT)
1626                 val |= TSI148_LCSR_DDAT_TM_SCT;
1627 
1628         if (cycle & VME_BLT)
1629                 val |= TSI148_LCSR_DDAT_TM_BLT;
1630 
1631         if (cycle & VME_MBLT)
1632                 val |= TSI148_LCSR_DDAT_TM_MBLT;
1633 
1634         if (cycle & VME_2eVME)
1635                 val |= TSI148_LCSR_DDAT_TM_2eVME;
1636 
1637         if (cycle & VME_2eSST)
1638                 val |= TSI148_LCSR_DDAT_TM_2eSST;
1639 
1640         if (cycle & VME_2eSSTB) {
1641                 dev_err(dev, "Currently not setting Broadcast Select "
1642                         "Registers\n");
1643                 val |= TSI148_LCSR_DDAT_TM_2eSSTB;
1644         }
1645 
1646         /* Setup data width */
1647         switch (dwidth) {
1648         case VME_D16:
1649                 val |= TSI148_LCSR_DDAT_DBW_16;
1650                 break;
1651         case VME_D32:
1652                 val |= TSI148_LCSR_DDAT_DBW_32;
1653                 break;
1654         default:
1655                 dev_err(dev, "Invalid data width\n");
1656                 return -EINVAL;
1657         }
1658 
1659         /* Setup address space */
1660         switch (aspace) {
1661         case VME_A16:
1662                 val |= TSI148_LCSR_DDAT_AMODE_A16;
1663                 break;
1664         case VME_A24:
1665                 val |= TSI148_LCSR_DDAT_AMODE_A24;
1666                 break;
1667         case VME_A32:
1668                 val |= TSI148_LCSR_DDAT_AMODE_A32;
1669                 break;
1670         case VME_A64:
1671                 val |= TSI148_LCSR_DDAT_AMODE_A64;
1672                 break;
1673         case VME_CRCSR:
1674                 val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1675                 break;
1676         case VME_USER1:
1677                 val |= TSI148_LCSR_DDAT_AMODE_USER1;
1678                 break;
1679         case VME_USER2:
1680                 val |= TSI148_LCSR_DDAT_AMODE_USER2;
1681                 break;
1682         case VME_USER3:
1683                 val |= TSI148_LCSR_DDAT_AMODE_USER3;
1684                 break;
1685         case VME_USER4:
1686                 val |= TSI148_LCSR_DDAT_AMODE_USER4;
1687                 break;
1688         default:
1689                 dev_err(dev, "Invalid address space\n");
1690                 return -EINVAL;
1691                 break;
1692         }
1693 
1694         if (cycle & VME_SUPER)
1695                 val |= TSI148_LCSR_DDAT_SUP;
1696         if (cycle & VME_PROG)
1697                 val |= TSI148_LCSR_DDAT_PGM;
1698 
1699         *attr = cpu_to_be32(val);
1700 
1701         return 0;
1702 }
1703 
1704 /*
1705  * Add a link list descriptor to the list
1706  *
1707  * Note: DMA engine expects the DMA descriptor to be big endian.
1708  */
1709 static int tsi148_dma_list_add(struct vme_dma_list *list,
1710         struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1711 {
1712         struct tsi148_dma_entry *entry, *prev;
1713         u32 address_high, address_low, val;
1714         struct vme_dma_pattern *pattern_attr;
1715         struct vme_dma_pci *pci_attr;
1716         struct vme_dma_vme *vme_attr;
1717         int retval = 0;
1718         struct vme_bridge *tsi148_bridge;
1719 
1720         tsi148_bridge = list->parent->parent;
1721 
1722         /* Descriptor must be aligned on 64-bit boundaries */
1723         entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
1724         if (entry == NULL) {
1725                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
1726                         "dma resource structure\n");
1727                 retval = -ENOMEM;
1728                 goto err_mem;
1729         }
1730 
1731         /* Test descriptor alignment */
1732         if ((unsigned long)&entry->descriptor & 0x7) {
1733                 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1734                         "byte boundary as required: %p\n",
1735                         &entry->descriptor);
1736                 retval = -EINVAL;
1737                 goto err_align;
1738         }
1739 
1740         /* Given we are going to fill out the structure, we probably don't
1741          * need to zero it, but better safe than sorry for now.
1742          */
1743         memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
1744 
1745         /* Fill out source part */
1746         switch (src->type) {
1747         case VME_DMA_PATTERN:
1748                 pattern_attr = src->private;
1749 
1750                 entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
1751 
1752                 val = TSI148_LCSR_DSAT_TYP_PAT;
1753 
1754                 /* Default behaviour is 32 bit pattern */
1755                 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1756                         val |= TSI148_LCSR_DSAT_PSZ;
1757 
1758                 /* It seems that the default behaviour is to increment */
1759                 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1760                         val |= TSI148_LCSR_DSAT_NIN;
1761                 entry->descriptor.dsat = cpu_to_be32(val);
1762                 break;
1763         case VME_DMA_PCI:
1764                 pci_attr = src->private;
1765 
1766                 reg_split((unsigned long long)pci_attr->address, &address_high,
1767                         &address_low);
1768                 entry->descriptor.dsau = cpu_to_be32(address_high);
1769                 entry->descriptor.dsal = cpu_to_be32(address_low);
1770                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
1771                 break;
1772         case VME_DMA_VME:
1773                 vme_attr = src->private;
1774 
1775                 reg_split((unsigned long long)vme_attr->address, &address_high,
1776                         &address_low);
1777                 entry->descriptor.dsau = cpu_to_be32(address_high);
1778                 entry->descriptor.dsal = cpu_to_be32(address_low);
1779                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
1780 
1781                 retval = tsi148_dma_set_vme_src_attributes(
1782                         tsi148_bridge->parent, &entry->descriptor.dsat,
1783                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1784                 if (retval < 0)
1785                         goto err_source;
1786                 break;
1787         default:
1788                 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1789                 retval = -EINVAL;
1790                 goto err_source;
1791                 break;
1792         }
1793 
1794         /* Assume last link - this will be over-written by adding another */
1795         entry->descriptor.dnlau = cpu_to_be32(0);
1796         entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
1797 
1798         /* Fill out destination part */
1799         switch (dest->type) {
1800         case VME_DMA_PCI:
1801                 pci_attr = dest->private;
1802 
1803                 reg_split((unsigned long long)pci_attr->address, &address_high,
1804                         &address_low);
1805                 entry->descriptor.ddau = cpu_to_be32(address_high);
1806                 entry->descriptor.ddal = cpu_to_be32(address_low);
1807                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
1808                 break;
1809         case VME_DMA_VME:
1810                 vme_attr = dest->private;
1811 
1812                 reg_split((unsigned long long)vme_attr->address, &address_high,
1813                         &address_low);
1814                 entry->descriptor.ddau = cpu_to_be32(address_high);
1815                 entry->descriptor.ddal = cpu_to_be32(address_low);
1816                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
1817 
1818                 retval = tsi148_dma_set_vme_dest_attributes(
1819                         tsi148_bridge->parent, &entry->descriptor.ddat,
1820                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1821                 if (retval < 0)
1822                         goto err_dest;
1823                 break;
1824         default:
1825                 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1826                 retval = -EINVAL;
1827                 goto err_dest;
1828                 break;
1829         }
1830 
1831         /* Fill out count */
1832         entry->descriptor.dcnt = cpu_to_be32((u32)count);
1833 
1834         /* Add to list */
1835         list_add_tail(&entry->list, &list->entries);
1836 
1837         /* Fill out previous descriptors "Next Address" */
1838         if (entry->list.prev != &list->entries) {
1839                 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1840                         list);
1841                 /* We need the bus address for the pointer */
1842                 entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1843                         &entry->descriptor,
1844                         sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1845 
1846                 reg_split((unsigned long long)entry->dma_handle, &address_high,
1847                         &address_low);
1848                 entry->descriptor.dnlau = cpu_to_be32(address_high);
1849                 entry->descriptor.dnlal = cpu_to_be32(address_low);
1850 
1851         }
1852 
1853         return 0;
1854 
1855 err_dest:
1856 err_source:
1857 err_align:
1858                 kfree(entry);
1859 err_mem:
1860         return retval;
1861 }
1862 
1863 /*
1864  * Check to see if the provided DMA channel is busy.
1865  */
1866 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1867 {
1868         u32 tmp;
1869         struct tsi148_driver *bridge;
1870 
1871         bridge = tsi148_bridge->driver_priv;
1872 
1873         tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1874                 TSI148_LCSR_OFFSET_DSTA);
1875 
1876         if (tmp & TSI148_LCSR_DSTA_BSY)
1877                 return 0;
1878         else
1879                 return 1;
1880 
1881 }
1882 
1883 /*
1884  * Execute a previously generated link list
1885  *
1886  * XXX Need to provide control register configuration.
1887  */
1888 static int tsi148_dma_list_exec(struct vme_dma_list *list)
1889 {
1890         struct vme_dma_resource *ctrlr;
1891         int channel, retval = 0;
1892         struct tsi148_dma_entry *entry;
1893         u32 bus_addr_high, bus_addr_low;
1894         u32 val, dctlreg = 0;
1895         struct vme_bridge *tsi148_bridge;
1896         struct tsi148_driver *bridge;
1897 
1898         ctrlr = list->parent;
1899 
1900         tsi148_bridge = ctrlr->parent;
1901 
1902         bridge = tsi148_bridge->driver_priv;
1903 
1904         mutex_lock(&ctrlr->mtx);
1905 
1906         channel = ctrlr->number;
1907 
1908         if (!list_empty(&ctrlr->running)) {
1909                 /*
1910                  * XXX We have an active DMA transfer and currently haven't
1911                  *     sorted out the mechanism for "pending" DMA transfers.
1912                  *     Return busy.
1913                  */
1914                 /* Need to add to pending here */
1915                 mutex_unlock(&ctrlr->mtx);
1916                 return -EBUSY;
1917         } else {
1918                 list_add(&list->list, &ctrlr->running);
1919         }
1920 
1921         /* Get first bus address and write into registers */
1922         entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1923                 list);
1924 
1925         entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1926                 &entry->descriptor,
1927                 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1928 
1929         mutex_unlock(&ctrlr->mtx);
1930 
1931         reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
1932 
1933         iowrite32be(bus_addr_high, bridge->base +
1934                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1935         iowrite32be(bus_addr_low, bridge->base +
1936                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1937 
1938         dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1939                 TSI148_LCSR_OFFSET_DCTL);
1940 
1941         /* Start the operation */
1942         iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1943                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1944 
1945         wait_event_interruptible(bridge->dma_queue[channel],
1946                 tsi148_dma_busy(ctrlr->parent, channel));
1947 
1948         /*
1949          * Read status register, this register is valid until we kick off a
1950          * new transfer.
1951          */
1952         val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1953                 TSI148_LCSR_OFFSET_DSTA);
1954 
1955         if (val & TSI148_LCSR_DSTA_VBE) {
1956                 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1957                 retval = -EIO;
1958         }
1959 
1960         /* Remove list from running list */
1961         mutex_lock(&ctrlr->mtx);
1962         list_del(&list->list);
1963         mutex_unlock(&ctrlr->mtx);
1964 
1965         return retval;
1966 }
1967 
1968 /*
1969  * Clean up a previously generated link list
1970  *
1971  * We have a separate function, don't assume that the chain can't be reused.
1972  */
1973 static int tsi148_dma_list_empty(struct vme_dma_list *list)
1974 {
1975         struct list_head *pos, *temp;
1976         struct tsi148_dma_entry *entry;
1977 
1978         struct vme_bridge *tsi148_bridge = list->parent->parent;
1979 
1980         /* detach and free each entry */
1981         list_for_each_safe(pos, temp, &list->entries) {
1982                 list_del(pos);
1983                 entry = list_entry(pos, struct tsi148_dma_entry, list);
1984 
1985                 dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
1986                         sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1987                 kfree(entry);
1988         }
1989 
1990         return 0;
1991 }
1992 
1993 /*
1994  * All 4 location monitors reside at the same base - this is therefore a
1995  * system wide configuration.
1996  *
1997  * This does not enable the LM monitor - that should be done when the first
1998  * callback is attached and disabled when the last callback is removed.
1999  */
2000 static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
2001         u32 aspace, u32 cycle)
2002 {
2003         u32 lm_base_high, lm_base_low, lm_ctl = 0;
2004         int i;
2005         struct vme_bridge *tsi148_bridge;
2006         struct tsi148_driver *bridge;
2007 
2008         tsi148_bridge = lm->parent;
2009 
2010         bridge = tsi148_bridge->driver_priv;
2011 
2012         mutex_lock(&lm->mtx);
2013 
2014         /* If we already have a callback attached, we can't move it! */
2015         for (i = 0; i < lm->monitors; i++) {
2016                 if (bridge->lm_callback[i] != NULL) {
2017                         mutex_unlock(&lm->mtx);
2018                         dev_err(tsi148_bridge->parent, "Location monitor "
2019                                 "callback attached, can't reset\n");
2020                         return -EBUSY;
2021                 }
2022         }
2023 
2024         switch (aspace) {
2025         case VME_A16:
2026                 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
2027                 break;
2028         case VME_A24:
2029                 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
2030                 break;
2031         case VME_A32:
2032                 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
2033                 break;
2034         case VME_A64:
2035                 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
2036                 break;
2037         default:
2038                 mutex_unlock(&lm->mtx);
2039                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
2040                 return -EINVAL;
2041                 break;
2042         }
2043 
2044         if (cycle & VME_SUPER)
2045                 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
2046         if (cycle & VME_USER)
2047                 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
2048         if (cycle & VME_PROG)
2049                 lm_ctl |= TSI148_LCSR_LMAT_PGM;
2050         if (cycle & VME_DATA)
2051                 lm_ctl |= TSI148_LCSR_LMAT_DATA;
2052 
2053         reg_split(lm_base, &lm_base_high, &lm_base_low);
2054 
2055         iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
2056         iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
2057         iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2058 
2059         mutex_unlock(&lm->mtx);
2060 
2061         return 0;
2062 }
2063 
2064 /* Get configuration of the callback monitor and return whether it is enabled
2065  * or disabled.
2066  */
2067 static int tsi148_lm_get(struct vme_lm_resource *lm,
2068         unsigned long long *lm_base, u32 *aspace, u32 *cycle)
2069 {
2070         u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
2071         struct tsi148_driver *bridge;
2072 
2073         bridge = lm->parent->driver_priv;
2074 
2075         mutex_lock(&lm->mtx);
2076 
2077         lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
2078         lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
2079         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2080 
2081         reg_join(lm_base_high, lm_base_low, lm_base);
2082 
2083         if (lm_ctl & TSI148_LCSR_LMAT_EN)
2084                 enabled = 1;
2085 
2086         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
2087                 *aspace |= VME_A16;
2088 
2089         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
2090                 *aspace |= VME_A24;
2091 
2092         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
2093                 *aspace |= VME_A32;
2094 
2095         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
2096                 *aspace |= VME_A64;
2097 
2098 
2099         if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
2100                 *cycle |= VME_SUPER;
2101         if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
2102                 *cycle |= VME_USER;
2103         if (lm_ctl & TSI148_LCSR_LMAT_PGM)
2104                 *cycle |= VME_PROG;
2105         if (lm_ctl & TSI148_LCSR_LMAT_DATA)
2106                 *cycle |= VME_DATA;
2107 
2108         mutex_unlock(&lm->mtx);
2109 
2110         return enabled;
2111 }
2112 
2113 /*
2114  * Attach a callback to a specific location monitor.
2115  *
2116  * Callback will be passed the monitor triggered.
2117  */
2118 static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2119         void (*callback)(int))
2120 {
2121         u32 lm_ctl, tmp;
2122         struct vme_bridge *tsi148_bridge;
2123         struct tsi148_driver *bridge;
2124 
2125         tsi148_bridge = lm->parent;
2126 
2127         bridge = tsi148_bridge->driver_priv;
2128 
2129         mutex_lock(&lm->mtx);
2130 
2131         /* Ensure that the location monitor is configured - need PGM or DATA */
2132         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2133         if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2134                 mutex_unlock(&lm->mtx);
2135                 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2136                         "configured\n");
2137                 return -EINVAL;
2138         }
2139 
2140         /* Check that a callback isn't already attached */
2141         if (bridge->lm_callback[monitor] != NULL) {
2142                 mutex_unlock(&lm->mtx);
2143                 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2144                 return -EBUSY;
2145         }
2146 
2147         /* Attach callback */
2148         bridge->lm_callback[monitor] = callback;
2149 
2150         /* Enable Location Monitor interrupt */
2151         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2152         tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2153         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2154 
2155         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2156         tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2157         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2158 
2159         /* Ensure that global Location Monitor Enable set */
2160         if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2161                 lm_ctl |= TSI148_LCSR_LMAT_EN;
2162                 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2163         }
2164 
2165         mutex_unlock(&lm->mtx);
2166 
2167         return 0;
2168 }
2169 
2170 /*
2171  * Detach a callback function forn a specific location monitor.
2172  */
2173 static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2174 {
2175         u32 lm_en, tmp;
2176         struct tsi148_driver *bridge;
2177 
2178         bridge = lm->parent->driver_priv;
2179 
2180         mutex_lock(&lm->mtx);
2181 
2182         /* Disable Location Monitor and ensure previous interrupts are clear */
2183         lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2184         lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2185         iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2186 
2187         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2188         tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2189         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2190 
2191         iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2192                  bridge->base + TSI148_LCSR_INTC);
2193 
2194         /* Detach callback */
2195         bridge->lm_callback[monitor] = NULL;
2196 
2197         /* If all location monitors disabled, disable global Location Monitor */
2198         if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2199                         TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2200                 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2201                 tmp &= ~TSI148_LCSR_LMAT_EN;
2202                 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2203         }
2204 
2205         mutex_unlock(&lm->mtx);
2206 
2207         return 0;
2208 }
2209 
2210 /*
2211  * Determine Geographical Addressing
2212  */
2213 static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2214 {
2215         u32 slot = 0;
2216         struct tsi148_driver *bridge;
2217 
2218         bridge = tsi148_bridge->driver_priv;
2219 
2220         if (!geoid) {
2221                 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2222                 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2223         } else
2224                 slot = geoid;
2225 
2226         return (int)slot;
2227 }
2228 
2229 static void *tsi148_alloc_consistent(struct device *parent, size_t size,
2230         dma_addr_t *dma)
2231 {
2232         struct pci_dev *pdev;
2233 
2234         /* Find pci_dev container of dev */
2235         pdev = container_of(parent, struct pci_dev, dev);
2236 
2237         return pci_alloc_consistent(pdev, size, dma);
2238 }
2239 
2240 static void tsi148_free_consistent(struct device *parent, size_t size,
2241         void *vaddr, dma_addr_t dma)
2242 {
2243         struct pci_dev *pdev;
2244 
2245         /* Find pci_dev container of dev */
2246         pdev = container_of(parent, struct pci_dev, dev);
2247 
2248         pci_free_consistent(pdev, size, vaddr, dma);
2249 }
2250 
2251 /*
2252  * Configure CR/CSR space
2253  *
2254  * Access to the CR/CSR can be configured at power-up. The location of the
2255  * CR/CSR registers in the CR/CSR address space is determined by the boards
2256  * Auto-ID or Geographic address. This function ensures that the window is
2257  * enabled at an offset consistent with the boards geopgraphic address.
2258  *
2259  * Each board has a 512kB window, with the highest 4kB being used for the
2260  * boards registers, this means there is a fix length 508kB window which must
2261  * be mapped onto PCI memory.
2262  */
2263 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2264         struct pci_dev *pdev)
2265 {
2266         u32 cbar, crat, vstat;
2267         u32 crcsr_bus_high, crcsr_bus_low;
2268         int retval;
2269         struct tsi148_driver *bridge;
2270 
2271         bridge = tsi148_bridge->driver_priv;
2272 
2273         /* Allocate mem for CR/CSR image */
2274         bridge->crcsr_kernel = pci_alloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2275                 &bridge->crcsr_bus);
2276         if (bridge->crcsr_kernel == NULL) {
2277                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2278                         "CR/CSR image\n");
2279                 return -ENOMEM;
2280         }
2281 
2282         memset(bridge->crcsr_kernel, 0, VME_CRCSR_BUF_SIZE);
2283 
2284         reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2285 
2286         iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2287         iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2288 
2289         /* Ensure that the CR/CSR is configured at the correct offset */
2290         cbar = ioread32be(bridge->base + TSI148_CBAR);
2291         cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2292 
2293         vstat = tsi148_slot_get(tsi148_bridge);
2294 
2295         if (cbar != vstat) {
2296                 cbar = vstat;
2297                 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2298                 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2299         }
2300         dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2301 
2302         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2303         if (crat & TSI148_LCSR_CRAT_EN)
2304                 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2305         else {
2306                 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2307                 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2308                         bridge->base + TSI148_LCSR_CRAT);
2309         }
2310 
2311         /* If we want flushed, error-checked writes, set up a window
2312          * over the CR/CSR registers. We read from here to safely flush
2313          * through VME writes.
2314          */
2315         if (err_chk) {
2316                 retval = tsi148_master_set(bridge->flush_image, 1,
2317                         (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2318                         VME_D16);
2319                 if (retval)
2320                         dev_err(tsi148_bridge->parent, "Configuring flush image"
2321                                 " failed\n");
2322         }
2323 
2324         return 0;
2325 
2326 }
2327 
2328 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2329         struct pci_dev *pdev)
2330 {
2331         u32 crat;
2332         struct tsi148_driver *bridge;
2333 
2334         bridge = tsi148_bridge->driver_priv;
2335 
2336         /* Turn off CR/CSR space */
2337         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2338         iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2339                 bridge->base + TSI148_LCSR_CRAT);
2340 
2341         /* Free image */
2342         iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2343         iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2344 
2345         pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2346                 bridge->crcsr_bus);
2347 }
2348 
2349 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2350 {
2351         int retval, i, master_num;
2352         u32 data;
2353         struct list_head *pos = NULL, *n;
2354         struct vme_bridge *tsi148_bridge;
2355         struct tsi148_driver *tsi148_device;
2356         struct vme_master_resource *master_image;
2357         struct vme_slave_resource *slave_image;
2358         struct vme_dma_resource *dma_ctrlr;
2359         struct vme_lm_resource *lm;
2360 
2361         /* If we want to support more than one of each bridge, we need to
2362          * dynamically generate this so we get one per device
2363          */
2364         tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
2365         if (tsi148_bridge == NULL) {
2366                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2367                         "structure\n");
2368                 retval = -ENOMEM;
2369                 goto err_struct;
2370         }
2371 
2372         tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
2373         if (tsi148_device == NULL) {
2374                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2375                         "structure\n");
2376                 retval = -ENOMEM;
2377                 goto err_driver;
2378         }
2379 
2380         tsi148_bridge->driver_priv = tsi148_device;
2381 
2382         /* Enable the device */
2383         retval = pci_enable_device(pdev);
2384         if (retval) {
2385                 dev_err(&pdev->dev, "Unable to enable device\n");
2386                 goto err_enable;
2387         }
2388 
2389         /* Map Registers */
2390         retval = pci_request_regions(pdev, driver_name);
2391         if (retval) {
2392                 dev_err(&pdev->dev, "Unable to reserve resources\n");
2393                 goto err_resource;
2394         }
2395 
2396         /* map registers in BAR 0 */
2397         tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2398                 4096);
2399         if (!tsi148_device->base) {
2400                 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2401                 retval = -EIO;
2402                 goto err_remap;
2403         }
2404 
2405         /* Check to see if the mapping worked out */
2406         data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2407         if (data != PCI_VENDOR_ID_TUNDRA) {
2408                 dev_err(&pdev->dev, "CRG region check failed\n");
2409                 retval = -EIO;
2410                 goto err_test;
2411         }
2412 
2413         /* Initialize wait queues & mutual exclusion flags */
2414         init_waitqueue_head(&tsi148_device->dma_queue[0]);
2415         init_waitqueue_head(&tsi148_device->dma_queue[1]);
2416         init_waitqueue_head(&tsi148_device->iack_queue);
2417         mutex_init(&tsi148_device->vme_int);
2418         mutex_init(&tsi148_device->vme_rmw);
2419 
2420         tsi148_bridge->parent = &pdev->dev;
2421         strcpy(tsi148_bridge->name, driver_name);
2422 
2423         /* Setup IRQ */
2424         retval = tsi148_irq_init(tsi148_bridge);
2425         if (retval != 0) {
2426                 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2427                 goto err_irq;
2428         }
2429 
2430         /* If we are going to flush writes, we need to read from the VME bus.
2431          * We need to do this safely, thus we read the devices own CR/CSR
2432          * register. To do this we must set up a window in CR/CSR space and
2433          * hence have one less master window resource available.
2434          */
2435         master_num = TSI148_MAX_MASTER;
2436         if (err_chk) {
2437                 master_num--;
2438 
2439                 tsi148_device->flush_image =
2440                         kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
2441                 if (tsi148_device->flush_image == NULL) {
2442                         dev_err(&pdev->dev, "Failed to allocate memory for "
2443                         "flush resource structure\n");
2444                         retval = -ENOMEM;
2445                         goto err_master;
2446                 }
2447                 tsi148_device->flush_image->parent = tsi148_bridge;
2448                 spin_lock_init(&tsi148_device->flush_image->lock);
2449                 tsi148_device->flush_image->locked = 1;
2450                 tsi148_device->flush_image->number = master_num;
2451                 memset(&tsi148_device->flush_image->bus_resource, 0,
2452                         sizeof(struct resource));
2453                 tsi148_device->flush_image->kern_base  = NULL;
2454         }
2455 
2456         /* Add master windows to list */
2457         INIT_LIST_HEAD(&tsi148_bridge->master_resources);
2458         for (i = 0; i < master_num; i++) {
2459                 master_image = kmalloc(sizeof(struct vme_master_resource),
2460                         GFP_KERNEL);
2461                 if (master_image == NULL) {
2462                         dev_err(&pdev->dev, "Failed to allocate memory for "
2463                         "master resource structure\n");
2464                         retval = -ENOMEM;
2465                         goto err_master;
2466                 }
2467                 master_image->parent = tsi148_bridge;
2468                 spin_lock_init(&master_image->lock);
2469                 master_image->locked = 0;
2470                 master_image->number = i;
2471                 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2472                         VME_A64;
2473                 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2474                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2475                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2476                         VME_PROG | VME_DATA;
2477                 master_image->width_attr = VME_D16 | VME_D32;
2478                 memset(&master_image->bus_resource, 0,
2479                         sizeof(struct resource));
2480                 master_image->kern_base  = NULL;
2481                 list_add_tail(&master_image->list,
2482                         &tsi148_bridge->master_resources);
2483         }
2484 
2485         /* Add slave windows to list */
2486         INIT_LIST_HEAD(&tsi148_bridge->slave_resources);
2487         for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2488                 slave_image = kmalloc(sizeof(struct vme_slave_resource),
2489                         GFP_KERNEL);
2490                 if (slave_image == NULL) {
2491                         dev_err(&pdev->dev, "Failed to allocate memory for "
2492                         "slave resource structure\n");
2493                         retval = -ENOMEM;
2494                         goto err_slave;
2495                 }
2496                 slave_image->parent = tsi148_bridge;
2497                 mutex_init(&slave_image->mtx);
2498                 slave_image->locked = 0;
2499                 slave_image->number = i;
2500                 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2501                         VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2502                         VME_USER3 | VME_USER4;
2503                 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2504                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2505                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2506                         VME_PROG | VME_DATA;
2507                 list_add_tail(&slave_image->list,
2508                         &tsi148_bridge->slave_resources);
2509         }
2510 
2511         /* Add dma engines to list */
2512         INIT_LIST_HEAD(&tsi148_bridge->dma_resources);
2513         for (i = 0; i < TSI148_MAX_DMA; i++) {
2514                 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
2515                         GFP_KERNEL);
2516                 if (dma_ctrlr == NULL) {
2517                         dev_err(&pdev->dev, "Failed to allocate memory for "
2518                         "dma resource structure\n");
2519                         retval = -ENOMEM;
2520                         goto err_dma;
2521                 }
2522                 dma_ctrlr->parent = tsi148_bridge;
2523                 mutex_init(&dma_ctrlr->mtx);
2524                 dma_ctrlr->locked = 0;
2525                 dma_ctrlr->number = i;
2526                 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2527                         VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2528                         VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2529                         VME_DMA_PATTERN_TO_MEM;
2530                 INIT_LIST_HEAD(&dma_ctrlr->pending);
2531                 INIT_LIST_HEAD(&dma_ctrlr->running);
2532                 list_add_tail(&dma_ctrlr->list,
2533                         &tsi148_bridge->dma_resources);
2534         }
2535 
2536         /* Add location monitor to list */
2537         INIT_LIST_HEAD(&tsi148_bridge->lm_resources);
2538         lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
2539         if (lm == NULL) {
2540                 dev_err(&pdev->dev, "Failed to allocate memory for "
2541                 "location monitor resource structure\n");
2542                 retval = -ENOMEM;
2543                 goto err_lm;
2544         }
2545         lm->parent = tsi148_bridge;
2546         mutex_init(&lm->mtx);
2547         lm->locked = 0;
2548         lm->number = 1;
2549         lm->monitors = 4;
2550         list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2551 
2552         tsi148_bridge->slave_get = tsi148_slave_get;
2553         tsi148_bridge->slave_set = tsi148_slave_set;
2554         tsi148_bridge->master_get = tsi148_master_get;
2555         tsi148_bridge->master_set = tsi148_master_set;
2556         tsi148_bridge->master_read = tsi148_master_read;
2557         tsi148_bridge->master_write = tsi148_master_write;
2558         tsi148_bridge->master_rmw = tsi148_master_rmw;
2559         tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2560         tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2561         tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2562         tsi148_bridge->irq_set = tsi148_irq_set;
2563         tsi148_bridge->irq_generate = tsi148_irq_generate;
2564         tsi148_bridge->lm_set = tsi148_lm_set;
2565         tsi148_bridge->lm_get = tsi148_lm_get;
2566         tsi148_bridge->lm_attach = tsi148_lm_attach;
2567         tsi148_bridge->lm_detach = tsi148_lm_detach;
2568         tsi148_bridge->slot_get = tsi148_slot_get;
2569         tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
2570         tsi148_bridge->free_consistent = tsi148_free_consistent;
2571 
2572         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2573         dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2574                 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2575         if (!geoid)
2576                 dev_info(&pdev->dev, "VME geographical address is %d\n",
2577                         data & TSI148_LCSR_VSTAT_GA_M);
2578         else
2579                 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2580                         geoid);
2581 
2582         dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2583                 err_chk ? "enabled" : "disabled");
2584 
2585         retval = tsi148_crcsr_init(tsi148_bridge, pdev);
2586         if (retval) {
2587                 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2588                 goto err_crcsr;
2589         }
2590 
2591         retval = vme_register_bridge(tsi148_bridge);
2592         if (retval != 0) {
2593                 dev_err(&pdev->dev, "Chip Registration failed.\n");
2594                 goto err_reg;
2595         }
2596 
2597         pci_set_drvdata(pdev, tsi148_bridge);
2598 
2599         /* Clear VME bus "board fail", and "power-up reset" lines */
2600         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2601         data &= ~TSI148_LCSR_VSTAT_BRDFL;
2602         data |= TSI148_LCSR_VSTAT_CPURST;
2603         iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2604 
2605         return 0;
2606 
2607 err_reg:
2608         tsi148_crcsr_exit(tsi148_bridge, pdev);
2609 err_crcsr:
2610 err_lm:
2611         /* resources are stored in link list */
2612         list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) {
2613                 lm = list_entry(pos, struct vme_lm_resource, list);
2614                 list_del(pos);
2615                 kfree(lm);
2616         }
2617 err_dma:
2618         /* resources are stored in link list */
2619         list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) {
2620                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2621                 list_del(pos);
2622                 kfree(dma_ctrlr);
2623         }
2624 err_slave:
2625         /* resources are stored in link list */
2626         list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) {
2627                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2628                 list_del(pos);
2629                 kfree(slave_image);
2630         }
2631 err_master:
2632         /* resources are stored in link list */
2633         list_for_each_safe(pos, n, &tsi148_bridge->master_resources) {
2634                 master_image = list_entry(pos, struct vme_master_resource,
2635                         list);
2636                 list_del(pos);
2637                 kfree(master_image);
2638         }
2639 
2640         tsi148_irq_exit(tsi148_bridge, pdev);
2641 err_irq:
2642 err_test:
2643         iounmap(tsi148_device->base);
2644 err_remap:
2645         pci_release_regions(pdev);
2646 err_resource:
2647         pci_disable_device(pdev);
2648 err_enable:
2649         kfree(tsi148_device);
2650 err_driver:
2651         kfree(tsi148_bridge);
2652 err_struct:
2653         return retval;
2654 
2655 }
2656 
2657 static void tsi148_remove(struct pci_dev *pdev)
2658 {
2659         struct list_head *pos = NULL;
2660         struct list_head *tmplist;
2661         struct vme_master_resource *master_image;
2662         struct vme_slave_resource *slave_image;
2663         struct vme_dma_resource *dma_ctrlr;
2664         int i;
2665         struct tsi148_driver *bridge;
2666         struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2667 
2668         bridge = tsi148_bridge->driver_priv;
2669 
2670 
2671         dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2672 
2673         /*
2674          *  Shutdown all inbound and outbound windows.
2675          */
2676         for (i = 0; i < 8; i++) {
2677                 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2678                         TSI148_LCSR_OFFSET_ITAT);
2679                 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2680                         TSI148_LCSR_OFFSET_OTAT);
2681         }
2682 
2683         /*
2684          *  Shutdown Location monitor.
2685          */
2686         iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2687 
2688         /*
2689          *  Shutdown CRG map.
2690          */
2691         iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2692 
2693         /*
2694          *  Clear error status.
2695          */
2696         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2697         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2698         iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2699 
2700         /*
2701          *  Remove VIRQ interrupt (if any)
2702          */
2703         if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2704                 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2705 
2706         /*
2707          *  Map all Interrupts to PCI INTA
2708          */
2709         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2710         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2711 
2712         tsi148_irq_exit(tsi148_bridge, pdev);
2713 
2714         vme_unregister_bridge(tsi148_bridge);
2715 
2716         tsi148_crcsr_exit(tsi148_bridge, pdev);
2717 
2718         /* resources are stored in link list */
2719         list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) {
2720                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2721                 list_del(pos);
2722                 kfree(dma_ctrlr);
2723         }
2724 
2725         /* resources are stored in link list */
2726         list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) {
2727                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2728                 list_del(pos);
2729                 kfree(slave_image);
2730         }
2731 
2732         /* resources are stored in link list */
2733         list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) {
2734                 master_image = list_entry(pos, struct vme_master_resource,
2735                         list);
2736                 list_del(pos);
2737                 kfree(master_image);
2738         }
2739 
2740         iounmap(bridge->base);
2741 
2742         pci_release_regions(pdev);
2743 
2744         pci_disable_device(pdev);
2745 
2746         kfree(tsi148_bridge->driver_priv);
2747 
2748         kfree(tsi148_bridge);
2749 }
2750 
2751 module_pci_driver(tsi148_driver);
2752 
2753 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2754 module_param(err_chk, bool, 0);
2755 
2756 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2757 module_param(geoid, int, 0);
2758 
2759 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2760 MODULE_LICENSE("GPL");
2761 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us