Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

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         int error_am;
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         error_am = (error_attrib & TSI148_LCSR_VEAT_AM_M) >> 8;
181 
182         reg_join(error_addr_high, error_addr_low, &error_addr);
183 
184         /* Check for exception register overflow (we have lost error data) */
185         if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
186                 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
187                         "Occurred\n");
188         }
189 
190         if (err_chk)
191                 vme_bus_error_handler(tsi148_bridge, error_addr, error_am);
192         else
193                 dev_err(tsi148_bridge->parent,
194                         "VME Bus Error at address: 0x%llx, attributes: %08x\n",
195                         error_addr, error_attrib);
196 
197         /* Clear Status */
198         iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
199 
200         return TSI148_LCSR_INTC_VERRC;
201 }
202 
203 /*
204  * Wake up IACK queue.
205  */
206 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
207 {
208         wake_up(&bridge->iack_queue);
209 
210         return TSI148_LCSR_INTC_IACKC;
211 }
212 
213 /*
214  * Calling VME bus interrupt callback if provided.
215  */
216 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
217         u32 stat)
218 {
219         int vec, i, serviced = 0;
220         struct tsi148_driver *bridge;
221 
222         bridge = tsi148_bridge->driver_priv;
223 
224         for (i = 7; i > 0; i--) {
225                 if (stat & (1 << i)) {
226                         /*
227                          * Note: Even though the registers are defined as
228                          * 32-bits in the spec, we only want to issue 8-bit
229                          * IACK cycles on the bus, read from offset 3.
230                          */
231                         vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
232 
233                         vme_irq_handler(tsi148_bridge, i, vec);
234 
235                         serviced |= (1 << i);
236                 }
237         }
238 
239         return serviced;
240 }
241 
242 /*
243  * Top level interrupt handler.  Clears appropriate interrupt status bits and
244  * then calls appropriate sub handler(s).
245  */
246 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
247 {
248         u32 stat, enable, serviced = 0;
249         struct vme_bridge *tsi148_bridge;
250         struct tsi148_driver *bridge;
251 
252         tsi148_bridge = ptr;
253 
254         bridge = tsi148_bridge->driver_priv;
255 
256         /* Determine which interrupts are unmasked and set */
257         enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
258         stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
259 
260         /* Only look at unmasked interrupts */
261         stat &= enable;
262 
263         if (unlikely(!stat))
264                 return IRQ_NONE;
265 
266         /* Call subhandlers as appropriate */
267         /* DMA irqs */
268         if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
269                 serviced |= tsi148_DMA_irqhandler(bridge, stat);
270 
271         /* Location monitor irqs */
272         if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
273                         TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
274                 serviced |= tsi148_LM_irqhandler(bridge, stat);
275 
276         /* Mail box irqs */
277         if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
278                         TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
279                 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
280 
281         /* PCI bus error */
282         if (stat & TSI148_LCSR_INTS_PERRS)
283                 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
284 
285         /* VME bus error */
286         if (stat & TSI148_LCSR_INTS_VERRS)
287                 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
288 
289         /* IACK irq */
290         if (stat & TSI148_LCSR_INTS_IACKS)
291                 serviced |= tsi148_IACK_irqhandler(bridge);
292 
293         /* VME bus irqs */
294         if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
295                         TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
296                         TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
297                         TSI148_LCSR_INTS_IRQ1S))
298                 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
299 
300         /* Clear serviced interrupts */
301         iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
302 
303         return IRQ_HANDLED;
304 }
305 
306 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
307 {
308         int result;
309         unsigned int tmp;
310         struct pci_dev *pdev;
311         struct tsi148_driver *bridge;
312 
313         pdev = to_pci_dev(tsi148_bridge->parent);
314 
315         bridge = tsi148_bridge->driver_priv;
316 
317         result = request_irq(pdev->irq,
318                              tsi148_irqhandler,
319                              IRQF_SHARED,
320                              driver_name, tsi148_bridge);
321         if (result) {
322                 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
323                         "vector %02X\n", pdev->irq);
324                 return result;
325         }
326 
327         /* Enable and unmask interrupts */
328         tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
329                 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
330                 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
331                 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
332                 TSI148_LCSR_INTEO_IACKEO;
333 
334         /* This leaves the following interrupts masked.
335          * TSI148_LCSR_INTEO_VIEEO
336          * TSI148_LCSR_INTEO_SYSFLEO
337          * TSI148_LCSR_INTEO_ACFLEO
338          */
339 
340         /* Don't enable Location Monitor interrupts here - they will be
341          * enabled when the location monitors are properly configured and
342          * a callback has been attached.
343          * TSI148_LCSR_INTEO_LM0EO
344          * TSI148_LCSR_INTEO_LM1EO
345          * TSI148_LCSR_INTEO_LM2EO
346          * TSI148_LCSR_INTEO_LM3EO
347          */
348 
349         /* Don't enable VME interrupts until we add a handler, else the board
350          * will respond to it and we don't want that unless it knows how to
351          * properly deal with it.
352          * TSI148_LCSR_INTEO_IRQ7EO
353          * TSI148_LCSR_INTEO_IRQ6EO
354          * TSI148_LCSR_INTEO_IRQ5EO
355          * TSI148_LCSR_INTEO_IRQ4EO
356          * TSI148_LCSR_INTEO_IRQ3EO
357          * TSI148_LCSR_INTEO_IRQ2EO
358          * TSI148_LCSR_INTEO_IRQ1EO
359          */
360 
361         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
362         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
363 
364         return 0;
365 }
366 
367 static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
368         struct pci_dev *pdev)
369 {
370         struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
371 
372         /* Turn off interrupts */
373         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
374         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
375 
376         /* Clear all interrupts */
377         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
378 
379         /* Detach interrupt handler */
380         free_irq(pdev->irq, tsi148_bridge);
381 }
382 
383 /*
384  * Check to see if an IACk has been received, return true (1) or false (0).
385  */
386 static int tsi148_iack_received(struct tsi148_driver *bridge)
387 {
388         u32 tmp;
389 
390         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
391 
392         if (tmp & TSI148_LCSR_VICR_IRQS)
393                 return 0;
394         else
395                 return 1;
396 }
397 
398 /*
399  * Configure VME interrupt
400  */
401 static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
402         int state, int sync)
403 {
404         struct pci_dev *pdev;
405         u32 tmp;
406         struct tsi148_driver *bridge;
407 
408         bridge = tsi148_bridge->driver_priv;
409 
410         /* We need to do the ordering differently for enabling and disabling */
411         if (state == 0) {
412                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
413                 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
414                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
415 
416                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
417                 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
418                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
419 
420                 if (sync != 0) {
421                         pdev = to_pci_dev(tsi148_bridge->parent);
422                         synchronize_irq(pdev->irq);
423                 }
424         } else {
425                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
426                 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
427                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
428 
429                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
430                 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
431                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
432         }
433 }
434 
435 /*
436  * Generate a VME bus interrupt at the requested level & vector. Wait for
437  * interrupt to be acked.
438  */
439 static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
440         int statid)
441 {
442         u32 tmp;
443         struct tsi148_driver *bridge;
444 
445         bridge = tsi148_bridge->driver_priv;
446 
447         mutex_lock(&bridge->vme_int);
448 
449         /* Read VICR register */
450         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
451 
452         /* Set Status/ID */
453         tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
454                 (statid & TSI148_LCSR_VICR_STID_M);
455         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
456 
457         /* Assert VMEbus IRQ */
458         tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
459         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
460 
461         /* XXX Consider implementing a timeout? */
462         wait_event_interruptible(bridge->iack_queue,
463                 tsi148_iack_received(bridge));
464 
465         mutex_unlock(&bridge->vme_int);
466 
467         return 0;
468 }
469 
470 /*
471  * Initialize a slave window with the requested attributes.
472  */
473 static int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
474         unsigned long long vme_base, unsigned long long size,
475         dma_addr_t pci_base, u32 aspace, u32 cycle)
476 {
477         unsigned int i, addr = 0, granularity = 0;
478         unsigned int temp_ctl = 0;
479         unsigned int vme_base_low, vme_base_high;
480         unsigned int vme_bound_low, vme_bound_high;
481         unsigned int pci_offset_low, pci_offset_high;
482         unsigned long long vme_bound, pci_offset;
483         struct vme_bridge *tsi148_bridge;
484         struct tsi148_driver *bridge;
485 
486         tsi148_bridge = image->parent;
487         bridge = tsi148_bridge->driver_priv;
488 
489         i = image->number;
490 
491         switch (aspace) {
492         case VME_A16:
493                 granularity = 0x10;
494                 addr |= TSI148_LCSR_ITAT_AS_A16;
495                 break;
496         case VME_A24:
497                 granularity = 0x1000;
498                 addr |= TSI148_LCSR_ITAT_AS_A24;
499                 break;
500         case VME_A32:
501                 granularity = 0x10000;
502                 addr |= TSI148_LCSR_ITAT_AS_A32;
503                 break;
504         case VME_A64:
505                 granularity = 0x10000;
506                 addr |= TSI148_LCSR_ITAT_AS_A64;
507                 break;
508         default:
509                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
510                 return -EINVAL;
511                 break;
512         }
513 
514         /* Convert 64-bit variables to 2x 32-bit variables */
515         reg_split(vme_base, &vme_base_high, &vme_base_low);
516 
517         /*
518          * Bound address is a valid address for the window, adjust
519          * accordingly
520          */
521         vme_bound = vme_base + size - granularity;
522         reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
523         pci_offset = (unsigned long long)pci_base - vme_base;
524         reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
525 
526         if (vme_base_low & (granularity - 1)) {
527                 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
528                 return -EINVAL;
529         }
530         if (vme_bound_low & (granularity - 1)) {
531                 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
532                 return -EINVAL;
533         }
534         if (pci_offset_low & (granularity - 1)) {
535                 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
536                         "alignment\n");
537                 return -EINVAL;
538         }
539 
540         /*  Disable while we are mucking around */
541         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
542                 TSI148_LCSR_OFFSET_ITAT);
543         temp_ctl &= ~TSI148_LCSR_ITAT_EN;
544         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
545                 TSI148_LCSR_OFFSET_ITAT);
546 
547         /* Setup mapping */
548         iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
549                 TSI148_LCSR_OFFSET_ITSAU);
550         iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
551                 TSI148_LCSR_OFFSET_ITSAL);
552         iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
553                 TSI148_LCSR_OFFSET_ITEAU);
554         iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
555                 TSI148_LCSR_OFFSET_ITEAL);
556         iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
557                 TSI148_LCSR_OFFSET_ITOFU);
558         iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
559                 TSI148_LCSR_OFFSET_ITOFL);
560 
561         /* Setup 2eSST speeds */
562         temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
563         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
564         case VME_2eSST160:
565                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
566                 break;
567         case VME_2eSST267:
568                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
569                 break;
570         case VME_2eSST320:
571                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
572                 break;
573         }
574 
575         /* Setup cycle types */
576         temp_ctl &= ~(0x1F << 7);
577         if (cycle & VME_BLT)
578                 temp_ctl |= TSI148_LCSR_ITAT_BLT;
579         if (cycle & VME_MBLT)
580                 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
581         if (cycle & VME_2eVME)
582                 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
583         if (cycle & VME_2eSST)
584                 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
585         if (cycle & VME_2eSSTB)
586                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
587 
588         /* Setup address space */
589         temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
590         temp_ctl |= addr;
591 
592         temp_ctl &= ~0xF;
593         if (cycle & VME_SUPER)
594                 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
595         if (cycle & VME_USER)
596                 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
597         if (cycle & VME_PROG)
598                 temp_ctl |= TSI148_LCSR_ITAT_PGM;
599         if (cycle & VME_DATA)
600                 temp_ctl |= TSI148_LCSR_ITAT_DATA;
601 
602         /* Write ctl reg without enable */
603         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
604                 TSI148_LCSR_OFFSET_ITAT);
605 
606         if (enabled)
607                 temp_ctl |= TSI148_LCSR_ITAT_EN;
608 
609         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
610                 TSI148_LCSR_OFFSET_ITAT);
611 
612         return 0;
613 }
614 
615 /*
616  * Get slave window configuration.
617  */
618 static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
619         unsigned long long *vme_base, unsigned long long *size,
620         dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
621 {
622         unsigned int i, granularity = 0, ctl = 0;
623         unsigned int vme_base_low, vme_base_high;
624         unsigned int vme_bound_low, vme_bound_high;
625         unsigned int pci_offset_low, pci_offset_high;
626         unsigned long long vme_bound, pci_offset;
627         struct tsi148_driver *bridge;
628 
629         bridge = image->parent->driver_priv;
630 
631         i = image->number;
632 
633         /* Read registers */
634         ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
635                 TSI148_LCSR_OFFSET_ITAT);
636 
637         vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
638                 TSI148_LCSR_OFFSET_ITSAU);
639         vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
640                 TSI148_LCSR_OFFSET_ITSAL);
641         vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
642                 TSI148_LCSR_OFFSET_ITEAU);
643         vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
644                 TSI148_LCSR_OFFSET_ITEAL);
645         pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
646                 TSI148_LCSR_OFFSET_ITOFU);
647         pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
648                 TSI148_LCSR_OFFSET_ITOFL);
649 
650         /* Convert 64-bit variables to 2x 32-bit variables */
651         reg_join(vme_base_high, vme_base_low, vme_base);
652         reg_join(vme_bound_high, vme_bound_low, &vme_bound);
653         reg_join(pci_offset_high, pci_offset_low, &pci_offset);
654 
655         *pci_base = (dma_addr_t)(*vme_base + pci_offset);
656 
657         *enabled = 0;
658         *aspace = 0;
659         *cycle = 0;
660 
661         if (ctl & TSI148_LCSR_ITAT_EN)
662                 *enabled = 1;
663 
664         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
665                 granularity = 0x10;
666                 *aspace |= VME_A16;
667         }
668         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
669                 granularity = 0x1000;
670                 *aspace |= VME_A24;
671         }
672         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
673                 granularity = 0x10000;
674                 *aspace |= VME_A32;
675         }
676         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
677                 granularity = 0x10000;
678                 *aspace |= VME_A64;
679         }
680 
681         /* Need granularity before we set the size */
682         *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
683 
684 
685         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
686                 *cycle |= VME_2eSST160;
687         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
688                 *cycle |= VME_2eSST267;
689         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
690                 *cycle |= VME_2eSST320;
691 
692         if (ctl & TSI148_LCSR_ITAT_BLT)
693                 *cycle |= VME_BLT;
694         if (ctl & TSI148_LCSR_ITAT_MBLT)
695                 *cycle |= VME_MBLT;
696         if (ctl & TSI148_LCSR_ITAT_2eVME)
697                 *cycle |= VME_2eVME;
698         if (ctl & TSI148_LCSR_ITAT_2eSST)
699                 *cycle |= VME_2eSST;
700         if (ctl & TSI148_LCSR_ITAT_2eSSTB)
701                 *cycle |= VME_2eSSTB;
702 
703         if (ctl & TSI148_LCSR_ITAT_SUPR)
704                 *cycle |= VME_SUPER;
705         if (ctl & TSI148_LCSR_ITAT_NPRIV)
706                 *cycle |= VME_USER;
707         if (ctl & TSI148_LCSR_ITAT_PGM)
708                 *cycle |= VME_PROG;
709         if (ctl & TSI148_LCSR_ITAT_DATA)
710                 *cycle |= VME_DATA;
711 
712         return 0;
713 }
714 
715 /*
716  * Allocate and map PCI Resource
717  */
718 static int tsi148_alloc_resource(struct vme_master_resource *image,
719         unsigned long long size)
720 {
721         unsigned long long existing_size;
722         int retval = 0;
723         struct pci_dev *pdev;
724         struct vme_bridge *tsi148_bridge;
725 
726         tsi148_bridge = image->parent;
727 
728         pdev = to_pci_dev(tsi148_bridge->parent);
729 
730         existing_size = (unsigned long long)(image->bus_resource.end -
731                 image->bus_resource.start);
732 
733         /* If the existing size is OK, return */
734         if ((size != 0) && (existing_size == (size - 1)))
735                 return 0;
736 
737         if (existing_size != 0) {
738                 iounmap(image->kern_base);
739                 image->kern_base = NULL;
740                 kfree(image->bus_resource.name);
741                 release_resource(&image->bus_resource);
742                 memset(&image->bus_resource, 0, sizeof(struct resource));
743         }
744 
745         /* Exit here if size is zero */
746         if (size == 0)
747                 return 0;
748 
749         if (image->bus_resource.name == NULL) {
750                 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
751                 if (image->bus_resource.name == NULL) {
752                         dev_err(tsi148_bridge->parent, "Unable to allocate "
753                                 "memory for resource name\n");
754                         retval = -ENOMEM;
755                         goto err_name;
756                 }
757         }
758 
759         sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
760                 image->number);
761 
762         image->bus_resource.start = 0;
763         image->bus_resource.end = (unsigned long)size;
764         image->bus_resource.flags = IORESOURCE_MEM;
765 
766         retval = pci_bus_alloc_resource(pdev->bus,
767                 &image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM,
768                 0, NULL, NULL);
769         if (retval) {
770                 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
771                         "resource for window %d size 0x%lx start 0x%lx\n",
772                         image->number, (unsigned long)size,
773                         (unsigned long)image->bus_resource.start);
774                 goto err_resource;
775         }
776 
777         image->kern_base = ioremap_nocache(
778                 image->bus_resource.start, size);
779         if (image->kern_base == NULL) {
780                 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
781                 retval = -ENOMEM;
782                 goto err_remap;
783         }
784 
785         return 0;
786 
787 err_remap:
788         release_resource(&image->bus_resource);
789 err_resource:
790         kfree(image->bus_resource.name);
791         memset(&image->bus_resource, 0, sizeof(struct resource));
792 err_name:
793         return retval;
794 }
795 
796 /*
797  * Free and unmap PCI Resource
798  */
799 static void tsi148_free_resource(struct vme_master_resource *image)
800 {
801         iounmap(image->kern_base);
802         image->kern_base = NULL;
803         release_resource(&image->bus_resource);
804         kfree(image->bus_resource.name);
805         memset(&image->bus_resource, 0, sizeof(struct resource));
806 }
807 
808 /*
809  * Set the attributes of an outbound window.
810  */
811 static int tsi148_master_set(struct vme_master_resource *image, int enabled,
812         unsigned long long vme_base, unsigned long long size, u32 aspace,
813         u32 cycle, u32 dwidth)
814 {
815         int retval = 0;
816         unsigned int i;
817         unsigned int temp_ctl = 0;
818         unsigned int pci_base_low, pci_base_high;
819         unsigned int pci_bound_low, pci_bound_high;
820         unsigned int vme_offset_low, vme_offset_high;
821         unsigned long long pci_bound, vme_offset, pci_base;
822         struct vme_bridge *tsi148_bridge;
823         struct tsi148_driver *bridge;
824         struct pci_bus_region region;
825         struct pci_dev *pdev;
826 
827         tsi148_bridge = image->parent;
828 
829         bridge = tsi148_bridge->driver_priv;
830 
831         pdev = to_pci_dev(tsi148_bridge->parent);
832 
833         /* Verify input data */
834         if (vme_base & 0xFFFF) {
835                 dev_err(tsi148_bridge->parent, "Invalid VME Window "
836                         "alignment\n");
837                 retval = -EINVAL;
838                 goto err_window;
839         }
840 
841         if ((size == 0) && (enabled != 0)) {
842                 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
843                         "enabled windows\n");
844                 retval = -EINVAL;
845                 goto err_window;
846         }
847 
848         spin_lock(&image->lock);
849 
850         /* Let's allocate the resource here rather than further up the stack as
851          * it avoids pushing loads of bus dependent stuff up the stack. If size
852          * is zero, any existing resource will be freed.
853          */
854         retval = tsi148_alloc_resource(image, size);
855         if (retval) {
856                 spin_unlock(&image->lock);
857                 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
858                         "resource\n");
859                 goto err_res;
860         }
861 
862         if (size == 0) {
863                 pci_base = 0;
864                 pci_bound = 0;
865                 vme_offset = 0;
866         } else {
867                 pcibios_resource_to_bus(pdev->bus, &region,
868                                         &image->bus_resource);
869                 pci_base = region.start;
870 
871                 /*
872                  * Bound address is a valid address for the window, adjust
873                  * according to window granularity.
874                  */
875                 pci_bound = pci_base + (size - 0x10000);
876                 vme_offset = vme_base - pci_base;
877         }
878 
879         /* Convert 64-bit variables to 2x 32-bit variables */
880         reg_split(pci_base, &pci_base_high, &pci_base_low);
881         reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
882         reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
883 
884         if (pci_base_low & 0xFFFF) {
885                 spin_unlock(&image->lock);
886                 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
887                 retval = -EINVAL;
888                 goto err_gran;
889         }
890         if (pci_bound_low & 0xFFFF) {
891                 spin_unlock(&image->lock);
892                 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
893                 retval = -EINVAL;
894                 goto err_gran;
895         }
896         if (vme_offset_low & 0xFFFF) {
897                 spin_unlock(&image->lock);
898                 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
899                         "alignment\n");
900                 retval = -EINVAL;
901                 goto err_gran;
902         }
903 
904         i = image->number;
905 
906         /* Disable while we are mucking around */
907         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
908                 TSI148_LCSR_OFFSET_OTAT);
909         temp_ctl &= ~TSI148_LCSR_OTAT_EN;
910         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
911                 TSI148_LCSR_OFFSET_OTAT);
912 
913         /* Setup 2eSST speeds */
914         temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
915         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
916         case VME_2eSST160:
917                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
918                 break;
919         case VME_2eSST267:
920                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
921                 break;
922         case VME_2eSST320:
923                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
924                 break;
925         }
926 
927         /* Setup cycle types */
928         if (cycle & VME_BLT) {
929                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
930                 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
931         }
932         if (cycle & VME_MBLT) {
933                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
934                 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
935         }
936         if (cycle & VME_2eVME) {
937                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
938                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
939         }
940         if (cycle & VME_2eSST) {
941                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
942                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
943         }
944         if (cycle & VME_2eSSTB) {
945                 dev_warn(tsi148_bridge->parent, "Currently not setting "
946                         "Broadcast Select Registers\n");
947                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
948                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
949         }
950 
951         /* Setup data width */
952         temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
953         switch (dwidth) {
954         case VME_D16:
955                 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
956                 break;
957         case VME_D32:
958                 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
959                 break;
960         default:
961                 spin_unlock(&image->lock);
962                 dev_err(tsi148_bridge->parent, "Invalid data width\n");
963                 retval = -EINVAL;
964                 goto err_dwidth;
965         }
966 
967         /* Setup address space */
968         temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
969         switch (aspace) {
970         case VME_A16:
971                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
972                 break;
973         case VME_A24:
974                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
975                 break;
976         case VME_A32:
977                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
978                 break;
979         case VME_A64:
980                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
981                 break;
982         case VME_CRCSR:
983                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
984                 break;
985         case VME_USER1:
986                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
987                 break;
988         case VME_USER2:
989                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
990                 break;
991         case VME_USER3:
992                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
993                 break;
994         case VME_USER4:
995                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
996                 break;
997         default:
998                 spin_unlock(&image->lock);
999                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1000                 retval = -EINVAL;
1001                 goto err_aspace;
1002                 break;
1003         }
1004 
1005         temp_ctl &= ~(3<<4);
1006         if (cycle & VME_SUPER)
1007                 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1008         if (cycle & VME_PROG)
1009                 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1010 
1011         /* Setup mapping */
1012         iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1013                 TSI148_LCSR_OFFSET_OTSAU);
1014         iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1015                 TSI148_LCSR_OFFSET_OTSAL);
1016         iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1017                 TSI148_LCSR_OFFSET_OTEAU);
1018         iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1019                 TSI148_LCSR_OFFSET_OTEAL);
1020         iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1021                 TSI148_LCSR_OFFSET_OTOFU);
1022         iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1023                 TSI148_LCSR_OFFSET_OTOFL);
1024 
1025         /* Write ctl reg without enable */
1026         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1027                 TSI148_LCSR_OFFSET_OTAT);
1028 
1029         if (enabled)
1030                 temp_ctl |= TSI148_LCSR_OTAT_EN;
1031 
1032         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1033                 TSI148_LCSR_OFFSET_OTAT);
1034 
1035         spin_unlock(&image->lock);
1036         return 0;
1037 
1038 err_aspace:
1039 err_dwidth:
1040 err_gran:
1041         tsi148_free_resource(image);
1042 err_res:
1043 err_window:
1044         return retval;
1045 
1046 }
1047 
1048 /*
1049  * Set the attributes of an outbound window.
1050  *
1051  * XXX Not parsing prefetch information.
1052  */
1053 static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1054         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1055         u32 *cycle, u32 *dwidth)
1056 {
1057         unsigned int i, ctl;
1058         unsigned int pci_base_low, pci_base_high;
1059         unsigned int pci_bound_low, pci_bound_high;
1060         unsigned int vme_offset_low, vme_offset_high;
1061 
1062         unsigned long long pci_base, pci_bound, vme_offset;
1063         struct tsi148_driver *bridge;
1064 
1065         bridge = image->parent->driver_priv;
1066 
1067         i = image->number;
1068 
1069         ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1070                 TSI148_LCSR_OFFSET_OTAT);
1071 
1072         pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1073                 TSI148_LCSR_OFFSET_OTSAU);
1074         pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1075                 TSI148_LCSR_OFFSET_OTSAL);
1076         pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1077                 TSI148_LCSR_OFFSET_OTEAU);
1078         pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1079                 TSI148_LCSR_OFFSET_OTEAL);
1080         vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1081                 TSI148_LCSR_OFFSET_OTOFU);
1082         vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1083                 TSI148_LCSR_OFFSET_OTOFL);
1084 
1085         /* Convert 64-bit variables to 2x 32-bit variables */
1086         reg_join(pci_base_high, pci_base_low, &pci_base);
1087         reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1088         reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1089 
1090         *vme_base = pci_base + vme_offset;
1091         *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1092 
1093         *enabled = 0;
1094         *aspace = 0;
1095         *cycle = 0;
1096         *dwidth = 0;
1097 
1098         if (ctl & TSI148_LCSR_OTAT_EN)
1099                 *enabled = 1;
1100 
1101         /* Setup address space */
1102         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1103                 *aspace |= VME_A16;
1104         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1105                 *aspace |= VME_A24;
1106         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1107                 *aspace |= VME_A32;
1108         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1109                 *aspace |= VME_A64;
1110         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1111                 *aspace |= VME_CRCSR;
1112         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1113                 *aspace |= VME_USER1;
1114         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1115                 *aspace |= VME_USER2;
1116         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1117                 *aspace |= VME_USER3;
1118         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1119                 *aspace |= VME_USER4;
1120 
1121         /* Setup 2eSST speeds */
1122         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1123                 *cycle |= VME_2eSST160;
1124         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1125                 *cycle |= VME_2eSST267;
1126         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1127                 *cycle |= VME_2eSST320;
1128 
1129         /* Setup cycle types */
1130         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1131                 *cycle |= VME_SCT;
1132         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1133                 *cycle |= VME_BLT;
1134         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1135                 *cycle |= VME_MBLT;
1136         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1137                 *cycle |= VME_2eVME;
1138         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1139                 *cycle |= VME_2eSST;
1140         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1141                 *cycle |= VME_2eSSTB;
1142 
1143         if (ctl & TSI148_LCSR_OTAT_SUP)
1144                 *cycle |= VME_SUPER;
1145         else
1146                 *cycle |= VME_USER;
1147 
1148         if (ctl & TSI148_LCSR_OTAT_PGM)
1149                 *cycle |= VME_PROG;
1150         else
1151                 *cycle |= VME_DATA;
1152 
1153         /* Setup data width */
1154         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1155                 *dwidth = VME_D16;
1156         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1157                 *dwidth = VME_D32;
1158 
1159         return 0;
1160 }
1161 
1162 
1163 static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1164         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1165         u32 *cycle, u32 *dwidth)
1166 {
1167         int retval;
1168 
1169         spin_lock(&image->lock);
1170 
1171         retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1172                 cycle, dwidth);
1173 
1174         spin_unlock(&image->lock);
1175 
1176         return retval;
1177 }
1178 
1179 static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1180         size_t count, loff_t offset)
1181 {
1182         int retval, enabled;
1183         unsigned long long vme_base, size;
1184         u32 aspace, cycle, dwidth;
1185         struct vme_error_handler *handler = NULL;
1186         struct vme_bridge *tsi148_bridge;
1187         void __iomem *addr = image->kern_base + offset;
1188         unsigned int done = 0;
1189         unsigned int count32;
1190 
1191         tsi148_bridge = image->parent;
1192 
1193         spin_lock(&image->lock);
1194 
1195         if (err_chk) {
1196                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1197                                     &cycle, &dwidth);
1198                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1199                                                      vme_base + offset, count);
1200                 if (!handler) {
1201                         spin_unlock(&image->lock);
1202                         return -ENOMEM;
1203                 }
1204         }
1205 
1206         /* The following code handles VME address alignment. We cannot use
1207          * memcpy_xxx here because it may cut data transfers in to 8-bit
1208          * cycles when D16 or D32 cycles are required on the VME bus.
1209          * On the other hand, the bridge itself assures that the maximum data
1210          * cycle configured for the transfer is used and splits it
1211          * automatically for non-aligned addresses, so we don't want the
1212          * overhead of needlessly forcing small transfers for the entire cycle.
1213          */
1214         if ((uintptr_t)addr & 0x1) {
1215                 *(u8 *)buf = ioread8(addr);
1216                 done += 1;
1217                 if (done == count)
1218                         goto out;
1219         }
1220         if ((uintptr_t)(addr + done) & 0x2) {
1221                 if ((count - done) < 2) {
1222                         *(u8 *)(buf + done) = ioread8(addr + done);
1223                         done += 1;
1224                         goto out;
1225                 } else {
1226                         *(u16 *)(buf + done) = ioread16(addr + done);
1227                         done += 2;
1228                 }
1229         }
1230 
1231         count32 = (count - done) & ~0x3;
1232         while (done < count32) {
1233                 *(u32 *)(buf + done) = ioread32(addr + done);
1234                 done += 4;
1235         }
1236 
1237         if ((count - done) & 0x2) {
1238                 *(u16 *)(buf + done) = ioread16(addr + done);
1239                 done += 2;
1240         }
1241         if ((count - done) & 0x1) {
1242                 *(u8 *)(buf + done) = ioread8(addr + done);
1243                 done += 1;
1244         }
1245 
1246 out:
1247         retval = count;
1248 
1249         if (err_chk) {
1250                 if (handler->num_errors) {
1251                         dev_err(image->parent->parent,
1252                                 "First VME read error detected an at address 0x%llx\n",
1253                                 handler->first_error);
1254                         retval = handler->first_error - (vme_base + offset);
1255                 }
1256                 vme_unregister_error_handler(handler);
1257         }
1258 
1259         spin_unlock(&image->lock);
1260 
1261         return retval;
1262 }
1263 
1264 
1265 static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1266         size_t count, loff_t offset)
1267 {
1268         int retval = 0, enabled;
1269         unsigned long long vme_base, size;
1270         u32 aspace, cycle, dwidth;
1271         void __iomem *addr = image->kern_base + offset;
1272         unsigned int done = 0;
1273         unsigned int count32;
1274 
1275         struct vme_error_handler *handler = NULL;
1276         struct vme_bridge *tsi148_bridge;
1277         struct tsi148_driver *bridge;
1278 
1279         tsi148_bridge = image->parent;
1280 
1281         bridge = tsi148_bridge->driver_priv;
1282 
1283         spin_lock(&image->lock);
1284 
1285         if (err_chk) {
1286                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1287                                     &cycle, &dwidth);
1288                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1289                                                      vme_base + offset, count);
1290                 if (!handler) {
1291                         spin_unlock(&image->lock);
1292                         return -ENOMEM;
1293                 }
1294         }
1295 
1296         /* Here we apply for the same strategy we do in master_read
1297          * function in order to assure the correct cycles.
1298          */
1299         if ((uintptr_t)addr & 0x1) {
1300                 iowrite8(*(u8 *)buf, addr);
1301                 done += 1;
1302                 if (done == count)
1303                         goto out;
1304         }
1305         if ((uintptr_t)(addr + done) & 0x2) {
1306                 if ((count - done) < 2) {
1307                         iowrite8(*(u8 *)(buf + done), addr + done);
1308                         done += 1;
1309                         goto out;
1310                 } else {
1311                         iowrite16(*(u16 *)(buf + done), addr + done);
1312                         done += 2;
1313                 }
1314         }
1315 
1316         count32 = (count - done) & ~0x3;
1317         while (done < count32) {
1318                 iowrite32(*(u32 *)(buf + done), addr + done);
1319                 done += 4;
1320         }
1321 
1322         if ((count - done) & 0x2) {
1323                 iowrite16(*(u16 *)(buf + done), addr + done);
1324                 done += 2;
1325         }
1326         if ((count - done) & 0x1) {
1327                 iowrite8(*(u8 *)(buf + done), addr + done);
1328                 done += 1;
1329         }
1330 
1331 out:
1332         retval = count;
1333 
1334         /*
1335          * Writes are posted. We need to do a read on the VME bus to flush out
1336          * all of the writes before we check for errors. We can't guarantee
1337          * that reading the data we have just written is safe. It is believed
1338          * that there isn't any read, write re-ordering, so we can read any
1339          * location in VME space, so lets read the Device ID from the tsi148's
1340          * own registers as mapped into CR/CSR space.
1341          *
1342          * We check for saved errors in the written address range/space.
1343          */
1344 
1345         if (err_chk) {
1346                 ioread16(bridge->flush_image->kern_base + 0x7F000);
1347 
1348                 if (handler->num_errors) {
1349                         dev_warn(tsi148_bridge->parent,
1350                                  "First VME write error detected an at address 0x%llx\n",
1351                                  handler->first_error);
1352                         retval = handler->first_error - (vme_base + offset);
1353                 }
1354                 vme_unregister_error_handler(handler);
1355         }
1356 
1357         spin_unlock(&image->lock);
1358 
1359         return retval;
1360 }
1361 
1362 /*
1363  * Perform an RMW cycle on the VME bus.
1364  *
1365  * Requires a previously configured master window, returns final value.
1366  */
1367 static unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1368         unsigned int mask, unsigned int compare, unsigned int swap,
1369         loff_t offset)
1370 {
1371         unsigned long long pci_addr;
1372         unsigned int pci_addr_high, pci_addr_low;
1373         u32 tmp, result;
1374         int i;
1375         struct tsi148_driver *bridge;
1376 
1377         bridge = image->parent->driver_priv;
1378 
1379         /* Find the PCI address that maps to the desired VME address */
1380         i = image->number;
1381 
1382         /* Locking as we can only do one of these at a time */
1383         mutex_lock(&bridge->vme_rmw);
1384 
1385         /* Lock image */
1386         spin_lock(&image->lock);
1387 
1388         pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1389                 TSI148_LCSR_OFFSET_OTSAU);
1390         pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1391                 TSI148_LCSR_OFFSET_OTSAL);
1392 
1393         reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1394         reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1395 
1396         /* Configure registers */
1397         iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1398         iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1399         iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1400         iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1401         iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1402 
1403         /* Enable RMW */
1404         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1405         tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1406         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1407 
1408         /* Kick process off with a read to the required address. */
1409         result = ioread32be(image->kern_base + offset);
1410 
1411         /* Disable RMW */
1412         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1413         tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1414         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1415 
1416         spin_unlock(&image->lock);
1417 
1418         mutex_unlock(&bridge->vme_rmw);
1419 
1420         return result;
1421 }
1422 
1423 static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
1424         u32 aspace, u32 cycle, u32 dwidth)
1425 {
1426         u32 val;
1427 
1428         val = be32_to_cpu(*attr);
1429 
1430         /* Setup 2eSST speeds */
1431         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1432         case VME_2eSST160:
1433                 val |= TSI148_LCSR_DSAT_2eSSTM_160;
1434                 break;
1435         case VME_2eSST267:
1436                 val |= TSI148_LCSR_DSAT_2eSSTM_267;
1437                 break;
1438         case VME_2eSST320:
1439                 val |= TSI148_LCSR_DSAT_2eSSTM_320;
1440                 break;
1441         }
1442 
1443         /* Setup cycle types */
1444         if (cycle & VME_SCT)
1445                 val |= TSI148_LCSR_DSAT_TM_SCT;
1446 
1447         if (cycle & VME_BLT)
1448                 val |= TSI148_LCSR_DSAT_TM_BLT;
1449 
1450         if (cycle & VME_MBLT)
1451                 val |= TSI148_LCSR_DSAT_TM_MBLT;
1452 
1453         if (cycle & VME_2eVME)
1454                 val |= TSI148_LCSR_DSAT_TM_2eVME;
1455 
1456         if (cycle & VME_2eSST)
1457                 val |= TSI148_LCSR_DSAT_TM_2eSST;
1458 
1459         if (cycle & VME_2eSSTB) {
1460                 dev_err(dev, "Currently not setting Broadcast Select "
1461                         "Registers\n");
1462                 val |= TSI148_LCSR_DSAT_TM_2eSSTB;
1463         }
1464 
1465         /* Setup data width */
1466         switch (dwidth) {
1467         case VME_D16:
1468                 val |= TSI148_LCSR_DSAT_DBW_16;
1469                 break;
1470         case VME_D32:
1471                 val |= TSI148_LCSR_DSAT_DBW_32;
1472                 break;
1473         default:
1474                 dev_err(dev, "Invalid data width\n");
1475                 return -EINVAL;
1476         }
1477 
1478         /* Setup address space */
1479         switch (aspace) {
1480         case VME_A16:
1481                 val |= TSI148_LCSR_DSAT_AMODE_A16;
1482                 break;
1483         case VME_A24:
1484                 val |= TSI148_LCSR_DSAT_AMODE_A24;
1485                 break;
1486         case VME_A32:
1487                 val |= TSI148_LCSR_DSAT_AMODE_A32;
1488                 break;
1489         case VME_A64:
1490                 val |= TSI148_LCSR_DSAT_AMODE_A64;
1491                 break;
1492         case VME_CRCSR:
1493                 val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1494                 break;
1495         case VME_USER1:
1496                 val |= TSI148_LCSR_DSAT_AMODE_USER1;
1497                 break;
1498         case VME_USER2:
1499                 val |= TSI148_LCSR_DSAT_AMODE_USER2;
1500                 break;
1501         case VME_USER3:
1502                 val |= TSI148_LCSR_DSAT_AMODE_USER3;
1503                 break;
1504         case VME_USER4:
1505                 val |= TSI148_LCSR_DSAT_AMODE_USER4;
1506                 break;
1507         default:
1508                 dev_err(dev, "Invalid address space\n");
1509                 return -EINVAL;
1510                 break;
1511         }
1512 
1513         if (cycle & VME_SUPER)
1514                 val |= TSI148_LCSR_DSAT_SUP;
1515         if (cycle & VME_PROG)
1516                 val |= TSI148_LCSR_DSAT_PGM;
1517 
1518         *attr = cpu_to_be32(val);
1519 
1520         return 0;
1521 }
1522 
1523 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
1524         u32 aspace, u32 cycle, u32 dwidth)
1525 {
1526         u32 val;
1527 
1528         val = be32_to_cpu(*attr);
1529 
1530         /* Setup 2eSST speeds */
1531         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1532         case VME_2eSST160:
1533                 val |= TSI148_LCSR_DDAT_2eSSTM_160;
1534                 break;
1535         case VME_2eSST267:
1536                 val |= TSI148_LCSR_DDAT_2eSSTM_267;
1537                 break;
1538         case VME_2eSST320:
1539                 val |= TSI148_LCSR_DDAT_2eSSTM_320;
1540                 break;
1541         }
1542 
1543         /* Setup cycle types */
1544         if (cycle & VME_SCT)
1545                 val |= TSI148_LCSR_DDAT_TM_SCT;
1546 
1547         if (cycle & VME_BLT)
1548                 val |= TSI148_LCSR_DDAT_TM_BLT;
1549 
1550         if (cycle & VME_MBLT)
1551                 val |= TSI148_LCSR_DDAT_TM_MBLT;
1552 
1553         if (cycle & VME_2eVME)
1554                 val |= TSI148_LCSR_DDAT_TM_2eVME;
1555 
1556         if (cycle & VME_2eSST)
1557                 val |= TSI148_LCSR_DDAT_TM_2eSST;
1558 
1559         if (cycle & VME_2eSSTB) {
1560                 dev_err(dev, "Currently not setting Broadcast Select "
1561                         "Registers\n");
1562                 val |= TSI148_LCSR_DDAT_TM_2eSSTB;
1563         }
1564 
1565         /* Setup data width */
1566         switch (dwidth) {
1567         case VME_D16:
1568                 val |= TSI148_LCSR_DDAT_DBW_16;
1569                 break;
1570         case VME_D32:
1571                 val |= TSI148_LCSR_DDAT_DBW_32;
1572                 break;
1573         default:
1574                 dev_err(dev, "Invalid data width\n");
1575                 return -EINVAL;
1576         }
1577 
1578         /* Setup address space */
1579         switch (aspace) {
1580         case VME_A16:
1581                 val |= TSI148_LCSR_DDAT_AMODE_A16;
1582                 break;
1583         case VME_A24:
1584                 val |= TSI148_LCSR_DDAT_AMODE_A24;
1585                 break;
1586         case VME_A32:
1587                 val |= TSI148_LCSR_DDAT_AMODE_A32;
1588                 break;
1589         case VME_A64:
1590                 val |= TSI148_LCSR_DDAT_AMODE_A64;
1591                 break;
1592         case VME_CRCSR:
1593                 val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1594                 break;
1595         case VME_USER1:
1596                 val |= TSI148_LCSR_DDAT_AMODE_USER1;
1597                 break;
1598         case VME_USER2:
1599                 val |= TSI148_LCSR_DDAT_AMODE_USER2;
1600                 break;
1601         case VME_USER3:
1602                 val |= TSI148_LCSR_DDAT_AMODE_USER3;
1603                 break;
1604         case VME_USER4:
1605                 val |= TSI148_LCSR_DDAT_AMODE_USER4;
1606                 break;
1607         default:
1608                 dev_err(dev, "Invalid address space\n");
1609                 return -EINVAL;
1610                 break;
1611         }
1612 
1613         if (cycle & VME_SUPER)
1614                 val |= TSI148_LCSR_DDAT_SUP;
1615         if (cycle & VME_PROG)
1616                 val |= TSI148_LCSR_DDAT_PGM;
1617 
1618         *attr = cpu_to_be32(val);
1619 
1620         return 0;
1621 }
1622 
1623 /*
1624  * Add a link list descriptor to the list
1625  *
1626  * Note: DMA engine expects the DMA descriptor to be big endian.
1627  */
1628 static int tsi148_dma_list_add(struct vme_dma_list *list,
1629         struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1630 {
1631         struct tsi148_dma_entry *entry, *prev;
1632         u32 address_high, address_low, val;
1633         struct vme_dma_pattern *pattern_attr;
1634         struct vme_dma_pci *pci_attr;
1635         struct vme_dma_vme *vme_attr;
1636         int retval = 0;
1637         struct vme_bridge *tsi148_bridge;
1638 
1639         tsi148_bridge = list->parent->parent;
1640 
1641         /* Descriptor must be aligned on 64-bit boundaries */
1642         entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
1643         if (entry == NULL) {
1644                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
1645                         "dma resource structure\n");
1646                 retval = -ENOMEM;
1647                 goto err_mem;
1648         }
1649 
1650         /* Test descriptor alignment */
1651         if ((unsigned long)&entry->descriptor & 0x7) {
1652                 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1653                         "byte boundary as required: %p\n",
1654                         &entry->descriptor);
1655                 retval = -EINVAL;
1656                 goto err_align;
1657         }
1658 
1659         /* Given we are going to fill out the structure, we probably don't
1660          * need to zero it, but better safe than sorry for now.
1661          */
1662         memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
1663 
1664         /* Fill out source part */
1665         switch (src->type) {
1666         case VME_DMA_PATTERN:
1667                 pattern_attr = src->private;
1668 
1669                 entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
1670 
1671                 val = TSI148_LCSR_DSAT_TYP_PAT;
1672 
1673                 /* Default behaviour is 32 bit pattern */
1674                 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1675                         val |= TSI148_LCSR_DSAT_PSZ;
1676 
1677                 /* It seems that the default behaviour is to increment */
1678                 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1679                         val |= TSI148_LCSR_DSAT_NIN;
1680                 entry->descriptor.dsat = cpu_to_be32(val);
1681                 break;
1682         case VME_DMA_PCI:
1683                 pci_attr = src->private;
1684 
1685                 reg_split((unsigned long long)pci_attr->address, &address_high,
1686                         &address_low);
1687                 entry->descriptor.dsau = cpu_to_be32(address_high);
1688                 entry->descriptor.dsal = cpu_to_be32(address_low);
1689                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
1690                 break;
1691         case VME_DMA_VME:
1692                 vme_attr = src->private;
1693 
1694                 reg_split((unsigned long long)vme_attr->address, &address_high,
1695                         &address_low);
1696                 entry->descriptor.dsau = cpu_to_be32(address_high);
1697                 entry->descriptor.dsal = cpu_to_be32(address_low);
1698                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
1699 
1700                 retval = tsi148_dma_set_vme_src_attributes(
1701                         tsi148_bridge->parent, &entry->descriptor.dsat,
1702                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1703                 if (retval < 0)
1704                         goto err_source;
1705                 break;
1706         default:
1707                 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1708                 retval = -EINVAL;
1709                 goto err_source;
1710                 break;
1711         }
1712 
1713         /* Assume last link - this will be over-written by adding another */
1714         entry->descriptor.dnlau = cpu_to_be32(0);
1715         entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
1716 
1717         /* Fill out destination part */
1718         switch (dest->type) {
1719         case VME_DMA_PCI:
1720                 pci_attr = dest->private;
1721 
1722                 reg_split((unsigned long long)pci_attr->address, &address_high,
1723                         &address_low);
1724                 entry->descriptor.ddau = cpu_to_be32(address_high);
1725                 entry->descriptor.ddal = cpu_to_be32(address_low);
1726                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
1727                 break;
1728         case VME_DMA_VME:
1729                 vme_attr = dest->private;
1730 
1731                 reg_split((unsigned long long)vme_attr->address, &address_high,
1732                         &address_low);
1733                 entry->descriptor.ddau = cpu_to_be32(address_high);
1734                 entry->descriptor.ddal = cpu_to_be32(address_low);
1735                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
1736 
1737                 retval = tsi148_dma_set_vme_dest_attributes(
1738                         tsi148_bridge->parent, &entry->descriptor.ddat,
1739                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1740                 if (retval < 0)
1741                         goto err_dest;
1742                 break;
1743         default:
1744                 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1745                 retval = -EINVAL;
1746                 goto err_dest;
1747                 break;
1748         }
1749 
1750         /* Fill out count */
1751         entry->descriptor.dcnt = cpu_to_be32((u32)count);
1752 
1753         /* Add to list */
1754         list_add_tail(&entry->list, &list->entries);
1755 
1756         entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1757                 &entry->descriptor,
1758                 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1759         if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) {
1760                 dev_err(tsi148_bridge->parent, "DMA mapping error\n");
1761                 retval = -EINVAL;
1762                 goto err_dma;
1763         }
1764 
1765         /* Fill out previous descriptors "Next Address" */
1766         if (entry->list.prev != &list->entries) {
1767                 reg_split((unsigned long long)entry->dma_handle, &address_high,
1768                         &address_low);
1769                 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1770                                   list);
1771                 prev->descriptor.dnlau = cpu_to_be32(address_high);
1772                 prev->descriptor.dnlal = cpu_to_be32(address_low);
1773 
1774         }
1775 
1776         return 0;
1777 
1778 err_dma:
1779 err_dest:
1780 err_source:
1781 err_align:
1782                 kfree(entry);
1783 err_mem:
1784         return retval;
1785 }
1786 
1787 /*
1788  * Check to see if the provided DMA channel is busy.
1789  */
1790 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1791 {
1792         u32 tmp;
1793         struct tsi148_driver *bridge;
1794 
1795         bridge = tsi148_bridge->driver_priv;
1796 
1797         tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1798                 TSI148_LCSR_OFFSET_DSTA);
1799 
1800         if (tmp & TSI148_LCSR_DSTA_BSY)
1801                 return 0;
1802         else
1803                 return 1;
1804 
1805 }
1806 
1807 /*
1808  * Execute a previously generated link list
1809  *
1810  * XXX Need to provide control register configuration.
1811  */
1812 static int tsi148_dma_list_exec(struct vme_dma_list *list)
1813 {
1814         struct vme_dma_resource *ctrlr;
1815         int channel, retval;
1816         struct tsi148_dma_entry *entry;
1817         u32 bus_addr_high, bus_addr_low;
1818         u32 val, dctlreg = 0;
1819         struct vme_bridge *tsi148_bridge;
1820         struct tsi148_driver *bridge;
1821 
1822         ctrlr = list->parent;
1823 
1824         tsi148_bridge = ctrlr->parent;
1825 
1826         bridge = tsi148_bridge->driver_priv;
1827 
1828         mutex_lock(&ctrlr->mtx);
1829 
1830         channel = ctrlr->number;
1831 
1832         if (!list_empty(&ctrlr->running)) {
1833                 /*
1834                  * XXX We have an active DMA transfer and currently haven't
1835                  *     sorted out the mechanism for "pending" DMA transfers.
1836                  *     Return busy.
1837                  */
1838                 /* Need to add to pending here */
1839                 mutex_unlock(&ctrlr->mtx);
1840                 return -EBUSY;
1841         } else {
1842                 list_add(&list->list, &ctrlr->running);
1843         }
1844 
1845         /* Get first bus address and write into registers */
1846         entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1847                 list);
1848 
1849         mutex_unlock(&ctrlr->mtx);
1850 
1851         reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
1852 
1853         iowrite32be(bus_addr_high, bridge->base +
1854                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1855         iowrite32be(bus_addr_low, bridge->base +
1856                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1857 
1858         dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1859                 TSI148_LCSR_OFFSET_DCTL);
1860 
1861         /* Start the operation */
1862         iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1863                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1864 
1865         retval = wait_event_interruptible(bridge->dma_queue[channel],
1866                 tsi148_dma_busy(ctrlr->parent, channel));
1867 
1868         if (retval) {
1869                 iowrite32be(dctlreg | TSI148_LCSR_DCTL_ABT, bridge->base +
1870                         TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1871                 /* Wait for the operation to abort */
1872                 wait_event(bridge->dma_queue[channel],
1873                            tsi148_dma_busy(ctrlr->parent, channel));
1874                 retval = -EINTR;
1875                 goto exit;
1876         }
1877 
1878         /*
1879          * Read status register, this register is valid until we kick off a
1880          * new transfer.
1881          */
1882         val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1883                 TSI148_LCSR_OFFSET_DSTA);
1884 
1885         if (val & TSI148_LCSR_DSTA_VBE) {
1886                 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1887                 retval = -EIO;
1888         }
1889 
1890 exit:
1891         /* Remove list from running list */
1892         mutex_lock(&ctrlr->mtx);
1893         list_del(&list->list);
1894         mutex_unlock(&ctrlr->mtx);
1895 
1896         return retval;
1897 }
1898 
1899 /*
1900  * Clean up a previously generated link list
1901  *
1902  * We have a separate function, don't assume that the chain can't be reused.
1903  */
1904 static int tsi148_dma_list_empty(struct vme_dma_list *list)
1905 {
1906         struct list_head *pos, *temp;
1907         struct tsi148_dma_entry *entry;
1908 
1909         struct vme_bridge *tsi148_bridge = list->parent->parent;
1910 
1911         /* detach and free each entry */
1912         list_for_each_safe(pos, temp, &list->entries) {
1913                 list_del(pos);
1914                 entry = list_entry(pos, struct tsi148_dma_entry, list);
1915 
1916                 dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
1917                         sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1918                 kfree(entry);
1919         }
1920 
1921         return 0;
1922 }
1923 
1924 /*
1925  * All 4 location monitors reside at the same base - this is therefore a
1926  * system wide configuration.
1927  *
1928  * This does not enable the LM monitor - that should be done when the first
1929  * callback is attached and disabled when the last callback is removed.
1930  */
1931 static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
1932         u32 aspace, u32 cycle)
1933 {
1934         u32 lm_base_high, lm_base_low, lm_ctl = 0;
1935         int i;
1936         struct vme_bridge *tsi148_bridge;
1937         struct tsi148_driver *bridge;
1938 
1939         tsi148_bridge = lm->parent;
1940 
1941         bridge = tsi148_bridge->driver_priv;
1942 
1943         mutex_lock(&lm->mtx);
1944 
1945         /* If we already have a callback attached, we can't move it! */
1946         for (i = 0; i < lm->monitors; i++) {
1947                 if (bridge->lm_callback[i] != NULL) {
1948                         mutex_unlock(&lm->mtx);
1949                         dev_err(tsi148_bridge->parent, "Location monitor "
1950                                 "callback attached, can't reset\n");
1951                         return -EBUSY;
1952                 }
1953         }
1954 
1955         switch (aspace) {
1956         case VME_A16:
1957                 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
1958                 break;
1959         case VME_A24:
1960                 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
1961                 break;
1962         case VME_A32:
1963                 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
1964                 break;
1965         case VME_A64:
1966                 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
1967                 break;
1968         default:
1969                 mutex_unlock(&lm->mtx);
1970                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1971                 return -EINVAL;
1972                 break;
1973         }
1974 
1975         if (cycle & VME_SUPER)
1976                 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
1977         if (cycle & VME_USER)
1978                 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
1979         if (cycle & VME_PROG)
1980                 lm_ctl |= TSI148_LCSR_LMAT_PGM;
1981         if (cycle & VME_DATA)
1982                 lm_ctl |= TSI148_LCSR_LMAT_DATA;
1983 
1984         reg_split(lm_base, &lm_base_high, &lm_base_low);
1985 
1986         iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
1987         iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
1988         iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
1989 
1990         mutex_unlock(&lm->mtx);
1991 
1992         return 0;
1993 }
1994 
1995 /* Get configuration of the callback monitor and return whether it is enabled
1996  * or disabled.
1997  */
1998 static int tsi148_lm_get(struct vme_lm_resource *lm,
1999         unsigned long long *lm_base, u32 *aspace, u32 *cycle)
2000 {
2001         u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
2002         struct tsi148_driver *bridge;
2003 
2004         bridge = lm->parent->driver_priv;
2005 
2006         mutex_lock(&lm->mtx);
2007 
2008         lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
2009         lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
2010         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2011 
2012         reg_join(lm_base_high, lm_base_low, lm_base);
2013 
2014         if (lm_ctl & TSI148_LCSR_LMAT_EN)
2015                 enabled = 1;
2016 
2017         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
2018                 *aspace |= VME_A16;
2019 
2020         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
2021                 *aspace |= VME_A24;
2022 
2023         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
2024                 *aspace |= VME_A32;
2025 
2026         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
2027                 *aspace |= VME_A64;
2028 
2029 
2030         if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
2031                 *cycle |= VME_SUPER;
2032         if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
2033                 *cycle |= VME_USER;
2034         if (lm_ctl & TSI148_LCSR_LMAT_PGM)
2035                 *cycle |= VME_PROG;
2036         if (lm_ctl & TSI148_LCSR_LMAT_DATA)
2037                 *cycle |= VME_DATA;
2038 
2039         mutex_unlock(&lm->mtx);
2040 
2041         return enabled;
2042 }
2043 
2044 /*
2045  * Attach a callback to a specific location monitor.
2046  *
2047  * Callback will be passed the monitor triggered.
2048  */
2049 static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2050         void (*callback)(int))
2051 {
2052         u32 lm_ctl, tmp;
2053         struct vme_bridge *tsi148_bridge;
2054         struct tsi148_driver *bridge;
2055 
2056         tsi148_bridge = lm->parent;
2057 
2058         bridge = tsi148_bridge->driver_priv;
2059 
2060         mutex_lock(&lm->mtx);
2061 
2062         /* Ensure that the location monitor is configured - need PGM or DATA */
2063         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2064         if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2065                 mutex_unlock(&lm->mtx);
2066                 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2067                         "configured\n");
2068                 return -EINVAL;
2069         }
2070 
2071         /* Check that a callback isn't already attached */
2072         if (bridge->lm_callback[monitor] != NULL) {
2073                 mutex_unlock(&lm->mtx);
2074                 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2075                 return -EBUSY;
2076         }
2077 
2078         /* Attach callback */
2079         bridge->lm_callback[monitor] = callback;
2080 
2081         /* Enable Location Monitor interrupt */
2082         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2083         tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2084         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2085 
2086         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2087         tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2088         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2089 
2090         /* Ensure that global Location Monitor Enable set */
2091         if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2092                 lm_ctl |= TSI148_LCSR_LMAT_EN;
2093                 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2094         }
2095 
2096         mutex_unlock(&lm->mtx);
2097 
2098         return 0;
2099 }
2100 
2101 /*
2102  * Detach a callback function forn a specific location monitor.
2103  */
2104 static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2105 {
2106         u32 lm_en, tmp;
2107         struct tsi148_driver *bridge;
2108 
2109         bridge = lm->parent->driver_priv;
2110 
2111         mutex_lock(&lm->mtx);
2112 
2113         /* Disable Location Monitor and ensure previous interrupts are clear */
2114         lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2115         lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2116         iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2117 
2118         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2119         tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2120         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2121 
2122         iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2123                  bridge->base + TSI148_LCSR_INTC);
2124 
2125         /* Detach callback */
2126         bridge->lm_callback[monitor] = NULL;
2127 
2128         /* If all location monitors disabled, disable global Location Monitor */
2129         if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2130                         TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2131                 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2132                 tmp &= ~TSI148_LCSR_LMAT_EN;
2133                 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2134         }
2135 
2136         mutex_unlock(&lm->mtx);
2137 
2138         return 0;
2139 }
2140 
2141 /*
2142  * Determine Geographical Addressing
2143  */
2144 static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2145 {
2146         u32 slot = 0;
2147         struct tsi148_driver *bridge;
2148 
2149         bridge = tsi148_bridge->driver_priv;
2150 
2151         if (!geoid) {
2152                 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2153                 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2154         } else
2155                 slot = geoid;
2156 
2157         return (int)slot;
2158 }
2159 
2160 static void *tsi148_alloc_consistent(struct device *parent, size_t size,
2161         dma_addr_t *dma)
2162 {
2163         struct pci_dev *pdev;
2164 
2165         /* Find pci_dev container of dev */
2166         pdev = to_pci_dev(parent);
2167 
2168         return pci_alloc_consistent(pdev, size, dma);
2169 }
2170 
2171 static void tsi148_free_consistent(struct device *parent, size_t size,
2172         void *vaddr, dma_addr_t dma)
2173 {
2174         struct pci_dev *pdev;
2175 
2176         /* Find pci_dev container of dev */
2177         pdev = to_pci_dev(parent);
2178 
2179         pci_free_consistent(pdev, size, vaddr, dma);
2180 }
2181 
2182 /*
2183  * Configure CR/CSR space
2184  *
2185  * Access to the CR/CSR can be configured at power-up. The location of the
2186  * CR/CSR registers in the CR/CSR address space is determined by the boards
2187  * Auto-ID or Geographic address. This function ensures that the window is
2188  * enabled at an offset consistent with the boards geopgraphic address.
2189  *
2190  * Each board has a 512kB window, with the highest 4kB being used for the
2191  * boards registers, this means there is a fix length 508kB window which must
2192  * be mapped onto PCI memory.
2193  */
2194 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2195         struct pci_dev *pdev)
2196 {
2197         u32 cbar, crat, vstat;
2198         u32 crcsr_bus_high, crcsr_bus_low;
2199         int retval;
2200         struct tsi148_driver *bridge;
2201 
2202         bridge = tsi148_bridge->driver_priv;
2203 
2204         /* Allocate mem for CR/CSR image */
2205         bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2206                                                      &bridge->crcsr_bus);
2207         if (bridge->crcsr_kernel == NULL) {
2208                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2209                         "CR/CSR image\n");
2210                 return -ENOMEM;
2211         }
2212 
2213         reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2214 
2215         iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2216         iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2217 
2218         /* Ensure that the CR/CSR is configured at the correct offset */
2219         cbar = ioread32be(bridge->base + TSI148_CBAR);
2220         cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2221 
2222         vstat = tsi148_slot_get(tsi148_bridge);
2223 
2224         if (cbar != vstat) {
2225                 cbar = vstat;
2226                 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2227                 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2228         }
2229         dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2230 
2231         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2232         if (crat & TSI148_LCSR_CRAT_EN)
2233                 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2234         else {
2235                 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2236                 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2237                         bridge->base + TSI148_LCSR_CRAT);
2238         }
2239 
2240         /* If we want flushed, error-checked writes, set up a window
2241          * over the CR/CSR registers. We read from here to safely flush
2242          * through VME writes.
2243          */
2244         if (err_chk) {
2245                 retval = tsi148_master_set(bridge->flush_image, 1,
2246                         (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2247                         VME_D16);
2248                 if (retval)
2249                         dev_err(tsi148_bridge->parent, "Configuring flush image"
2250                                 " failed\n");
2251         }
2252 
2253         return 0;
2254 
2255 }
2256 
2257 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2258         struct pci_dev *pdev)
2259 {
2260         u32 crat;
2261         struct tsi148_driver *bridge;
2262 
2263         bridge = tsi148_bridge->driver_priv;
2264 
2265         /* Turn off CR/CSR space */
2266         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2267         iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2268                 bridge->base + TSI148_LCSR_CRAT);
2269 
2270         /* Free image */
2271         iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2272         iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2273 
2274         pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2275                 bridge->crcsr_bus);
2276 }
2277 
2278 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2279 {
2280         int retval, i, master_num;
2281         u32 data;
2282         struct list_head *pos = NULL, *n;
2283         struct vme_bridge *tsi148_bridge;
2284         struct tsi148_driver *tsi148_device;
2285         struct vme_master_resource *master_image;
2286         struct vme_slave_resource *slave_image;
2287         struct vme_dma_resource *dma_ctrlr;
2288         struct vme_lm_resource *lm;
2289 
2290         /* If we want to support more than one of each bridge, we need to
2291          * dynamically generate this so we get one per device
2292          */
2293         tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
2294         if (tsi148_bridge == NULL) {
2295                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2296                         "structure\n");
2297                 retval = -ENOMEM;
2298                 goto err_struct;
2299         }
2300         vme_init_bridge(tsi148_bridge);
2301 
2302         tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
2303         if (tsi148_device == NULL) {
2304                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2305                         "structure\n");
2306                 retval = -ENOMEM;
2307                 goto err_driver;
2308         }
2309 
2310         tsi148_bridge->driver_priv = tsi148_device;
2311 
2312         /* Enable the device */
2313         retval = pci_enable_device(pdev);
2314         if (retval) {
2315                 dev_err(&pdev->dev, "Unable to enable device\n");
2316                 goto err_enable;
2317         }
2318 
2319         /* Map Registers */
2320         retval = pci_request_regions(pdev, driver_name);
2321         if (retval) {
2322                 dev_err(&pdev->dev, "Unable to reserve resources\n");
2323                 goto err_resource;
2324         }
2325 
2326         /* map registers in BAR 0 */
2327         tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2328                 4096);
2329         if (!tsi148_device->base) {
2330                 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2331                 retval = -EIO;
2332                 goto err_remap;
2333         }
2334 
2335         /* Check to see if the mapping worked out */
2336         data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2337         if (data != PCI_VENDOR_ID_TUNDRA) {
2338                 dev_err(&pdev->dev, "CRG region check failed\n");
2339                 retval = -EIO;
2340                 goto err_test;
2341         }
2342 
2343         /* Initialize wait queues & mutual exclusion flags */
2344         init_waitqueue_head(&tsi148_device->dma_queue[0]);
2345         init_waitqueue_head(&tsi148_device->dma_queue[1]);
2346         init_waitqueue_head(&tsi148_device->iack_queue);
2347         mutex_init(&tsi148_device->vme_int);
2348         mutex_init(&tsi148_device->vme_rmw);
2349 
2350         tsi148_bridge->parent = &pdev->dev;
2351         strcpy(tsi148_bridge->name, driver_name);
2352 
2353         /* Setup IRQ */
2354         retval = tsi148_irq_init(tsi148_bridge);
2355         if (retval != 0) {
2356                 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2357                 goto err_irq;
2358         }
2359 
2360         /* If we are going to flush writes, we need to read from the VME bus.
2361          * We need to do this safely, thus we read the devices own CR/CSR
2362          * register. To do this we must set up a window in CR/CSR space and
2363          * hence have one less master window resource available.
2364          */
2365         master_num = TSI148_MAX_MASTER;
2366         if (err_chk) {
2367                 master_num--;
2368 
2369                 tsi148_device->flush_image =
2370                         kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
2371                 if (tsi148_device->flush_image == NULL) {
2372                         dev_err(&pdev->dev, "Failed to allocate memory for "
2373                         "flush resource structure\n");
2374                         retval = -ENOMEM;
2375                         goto err_master;
2376                 }
2377                 tsi148_device->flush_image->parent = tsi148_bridge;
2378                 spin_lock_init(&tsi148_device->flush_image->lock);
2379                 tsi148_device->flush_image->locked = 1;
2380                 tsi148_device->flush_image->number = master_num;
2381                 memset(&tsi148_device->flush_image->bus_resource, 0,
2382                         sizeof(struct resource));
2383                 tsi148_device->flush_image->kern_base  = NULL;
2384         }
2385 
2386         /* Add master windows to list */
2387         for (i = 0; i < master_num; i++) {
2388                 master_image = kmalloc(sizeof(struct vme_master_resource),
2389                         GFP_KERNEL);
2390                 if (master_image == NULL) {
2391                         dev_err(&pdev->dev, "Failed to allocate memory for "
2392                         "master resource structure\n");
2393                         retval = -ENOMEM;
2394                         goto err_master;
2395                 }
2396                 master_image->parent = tsi148_bridge;
2397                 spin_lock_init(&master_image->lock);
2398                 master_image->locked = 0;
2399                 master_image->number = i;
2400                 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2401                         VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2402                         VME_USER3 | VME_USER4;
2403                 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2404                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2405                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2406                         VME_PROG | VME_DATA;
2407                 master_image->width_attr = VME_D16 | VME_D32;
2408                 memset(&master_image->bus_resource, 0,
2409                         sizeof(struct resource));
2410                 master_image->kern_base  = NULL;
2411                 list_add_tail(&master_image->list,
2412                         &tsi148_bridge->master_resources);
2413         }
2414 
2415         /* Add slave windows to list */
2416         for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2417                 slave_image = kmalloc(sizeof(struct vme_slave_resource),
2418                         GFP_KERNEL);
2419                 if (slave_image == NULL) {
2420                         dev_err(&pdev->dev, "Failed to allocate memory for "
2421                         "slave resource structure\n");
2422                         retval = -ENOMEM;
2423                         goto err_slave;
2424                 }
2425                 slave_image->parent = tsi148_bridge;
2426                 mutex_init(&slave_image->mtx);
2427                 slave_image->locked = 0;
2428                 slave_image->number = i;
2429                 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2430                         VME_A64;
2431                 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2432                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2433                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2434                         VME_PROG | VME_DATA;
2435                 list_add_tail(&slave_image->list,
2436                         &tsi148_bridge->slave_resources);
2437         }
2438 
2439         /* Add dma engines to list */
2440         for (i = 0; i < TSI148_MAX_DMA; i++) {
2441                 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
2442                         GFP_KERNEL);
2443                 if (dma_ctrlr == NULL) {
2444                         dev_err(&pdev->dev, "Failed to allocate memory for "
2445                         "dma resource structure\n");
2446                         retval = -ENOMEM;
2447                         goto err_dma;
2448                 }
2449                 dma_ctrlr->parent = tsi148_bridge;
2450                 mutex_init(&dma_ctrlr->mtx);
2451                 dma_ctrlr->locked = 0;
2452                 dma_ctrlr->number = i;
2453                 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2454                         VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2455                         VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2456                         VME_DMA_PATTERN_TO_MEM;
2457                 INIT_LIST_HEAD(&dma_ctrlr->pending);
2458                 INIT_LIST_HEAD(&dma_ctrlr->running);
2459                 list_add_tail(&dma_ctrlr->list,
2460                         &tsi148_bridge->dma_resources);
2461         }
2462 
2463         /* Add location monitor to list */
2464         lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
2465         if (lm == NULL) {
2466                 dev_err(&pdev->dev, "Failed to allocate memory for "
2467                 "location monitor resource structure\n");
2468                 retval = -ENOMEM;
2469                 goto err_lm;
2470         }
2471         lm->parent = tsi148_bridge;
2472         mutex_init(&lm->mtx);
2473         lm->locked = 0;
2474         lm->number = 1;
2475         lm->monitors = 4;
2476         list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2477 
2478         tsi148_bridge->slave_get = tsi148_slave_get;
2479         tsi148_bridge->slave_set = tsi148_slave_set;
2480         tsi148_bridge->master_get = tsi148_master_get;
2481         tsi148_bridge->master_set = tsi148_master_set;
2482         tsi148_bridge->master_read = tsi148_master_read;
2483         tsi148_bridge->master_write = tsi148_master_write;
2484         tsi148_bridge->master_rmw = tsi148_master_rmw;
2485         tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2486         tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2487         tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2488         tsi148_bridge->irq_set = tsi148_irq_set;
2489         tsi148_bridge->irq_generate = tsi148_irq_generate;
2490         tsi148_bridge->lm_set = tsi148_lm_set;
2491         tsi148_bridge->lm_get = tsi148_lm_get;
2492         tsi148_bridge->lm_attach = tsi148_lm_attach;
2493         tsi148_bridge->lm_detach = tsi148_lm_detach;
2494         tsi148_bridge->slot_get = tsi148_slot_get;
2495         tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
2496         tsi148_bridge->free_consistent = tsi148_free_consistent;
2497 
2498         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2499         dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2500                 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2501         if (!geoid)
2502                 dev_info(&pdev->dev, "VME geographical address is %d\n",
2503                         data & TSI148_LCSR_VSTAT_GA_M);
2504         else
2505                 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2506                         geoid);
2507 
2508         dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2509                 err_chk ? "enabled" : "disabled");
2510 
2511         retval = tsi148_crcsr_init(tsi148_bridge, pdev);
2512         if (retval) {
2513                 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2514                 goto err_crcsr;
2515         }
2516 
2517         retval = vme_register_bridge(tsi148_bridge);
2518         if (retval != 0) {
2519                 dev_err(&pdev->dev, "Chip Registration failed.\n");
2520                 goto err_reg;
2521         }
2522 
2523         pci_set_drvdata(pdev, tsi148_bridge);
2524 
2525         /* Clear VME bus "board fail", and "power-up reset" lines */
2526         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2527         data &= ~TSI148_LCSR_VSTAT_BRDFL;
2528         data |= TSI148_LCSR_VSTAT_CPURST;
2529         iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2530 
2531         return 0;
2532 
2533 err_reg:
2534         tsi148_crcsr_exit(tsi148_bridge, pdev);
2535 err_crcsr:
2536 err_lm:
2537         /* resources are stored in link list */
2538         list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) {
2539                 lm = list_entry(pos, struct vme_lm_resource, list);
2540                 list_del(pos);
2541                 kfree(lm);
2542         }
2543 err_dma:
2544         /* resources are stored in link list */
2545         list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) {
2546                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2547                 list_del(pos);
2548                 kfree(dma_ctrlr);
2549         }
2550 err_slave:
2551         /* resources are stored in link list */
2552         list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) {
2553                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2554                 list_del(pos);
2555                 kfree(slave_image);
2556         }
2557 err_master:
2558         /* resources are stored in link list */
2559         list_for_each_safe(pos, n, &tsi148_bridge->master_resources) {
2560                 master_image = list_entry(pos, struct vme_master_resource,
2561                         list);
2562                 list_del(pos);
2563                 kfree(master_image);
2564         }
2565 
2566         tsi148_irq_exit(tsi148_bridge, pdev);
2567 err_irq:
2568 err_test:
2569         iounmap(tsi148_device->base);
2570 err_remap:
2571         pci_release_regions(pdev);
2572 err_resource:
2573         pci_disable_device(pdev);
2574 err_enable:
2575         kfree(tsi148_device);
2576 err_driver:
2577         kfree(tsi148_bridge);
2578 err_struct:
2579         return retval;
2580 
2581 }
2582 
2583 static void tsi148_remove(struct pci_dev *pdev)
2584 {
2585         struct list_head *pos = NULL;
2586         struct list_head *tmplist;
2587         struct vme_master_resource *master_image;
2588         struct vme_slave_resource *slave_image;
2589         struct vme_dma_resource *dma_ctrlr;
2590         int i;
2591         struct tsi148_driver *bridge;
2592         struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2593 
2594         bridge = tsi148_bridge->driver_priv;
2595 
2596 
2597         dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2598 
2599         /*
2600          *  Shutdown all inbound and outbound windows.
2601          */
2602         for (i = 0; i < 8; i++) {
2603                 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2604                         TSI148_LCSR_OFFSET_ITAT);
2605                 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2606                         TSI148_LCSR_OFFSET_OTAT);
2607         }
2608 
2609         /*
2610          *  Shutdown Location monitor.
2611          */
2612         iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2613 
2614         /*
2615          *  Shutdown CRG map.
2616          */
2617         iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2618 
2619         /*
2620          *  Clear error status.
2621          */
2622         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2623         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2624         iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2625 
2626         /*
2627          *  Remove VIRQ interrupt (if any)
2628          */
2629         if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2630                 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2631 
2632         /*
2633          *  Map all Interrupts to PCI INTA
2634          */
2635         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2636         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2637 
2638         tsi148_irq_exit(tsi148_bridge, pdev);
2639 
2640         vme_unregister_bridge(tsi148_bridge);
2641 
2642         tsi148_crcsr_exit(tsi148_bridge, pdev);
2643 
2644         /* resources are stored in link list */
2645         list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) {
2646                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2647                 list_del(pos);
2648                 kfree(dma_ctrlr);
2649         }
2650 
2651         /* resources are stored in link list */
2652         list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) {
2653                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2654                 list_del(pos);
2655                 kfree(slave_image);
2656         }
2657 
2658         /* resources are stored in link list */
2659         list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) {
2660                 master_image = list_entry(pos, struct vme_master_resource,
2661                         list);
2662                 list_del(pos);
2663                 kfree(master_image);
2664         }
2665 
2666         iounmap(bridge->base);
2667 
2668         pci_release_regions(pdev);
2669 
2670         pci_disable_device(pdev);
2671 
2672         kfree(tsi148_bridge->driver_priv);
2673 
2674         kfree(tsi148_bridge);
2675 }
2676 
2677 module_pci_driver(tsi148_driver);
2678 
2679 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2680 module_param(err_chk, bool, 0);
2681 
2682 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2683 module_param(geoid, int, 0);
2684 
2685 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2686 MODULE_LICENSE("GPL");
2687 

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