Version:  2.0.40 2.2.26 2.4.37 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 4.9 4.10

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 MODULE_DEVICE_TABLE(pci, tsi148_ids);
 54 
 55 static struct pci_driver tsi148_driver = {
 56         .name = driver_name,
 57         .id_table = tsi148_ids,
 58         .probe = tsi148_probe,
 59         .remove = tsi148_remove,
 60 };
 61 
 62 static void reg_join(unsigned int high, unsigned int low,
 63         unsigned long long *variable)
 64 {
 65         *variable = (unsigned long long)high << 32;
 66         *variable |= (unsigned long long)low;
 67 }
 68 
 69 static void reg_split(unsigned long long variable, unsigned int *high,
 70         unsigned int *low)
 71 {
 72         *low = (unsigned int)variable & 0xFFFFFFFF;
 73         *high = (unsigned int)(variable >> 32);
 74 }
 75 
 76 /*
 77  * Wakes up DMA queue.
 78  */
 79 static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
 80         int channel_mask)
 81 {
 82         u32 serviced = 0;
 83 
 84         if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
 85                 wake_up(&bridge->dma_queue[0]);
 86                 serviced |= TSI148_LCSR_INTC_DMA0C;
 87         }
 88         if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
 89                 wake_up(&bridge->dma_queue[1]);
 90                 serviced |= TSI148_LCSR_INTC_DMA1C;
 91         }
 92 
 93         return serviced;
 94 }
 95 
 96 /*
 97  * Wake up location monitor queue
 98  */
 99 static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
100 {
101         int i;
102         u32 serviced = 0;
103 
104         for (i = 0; i < 4; i++) {
105                 if (stat & TSI148_LCSR_INTS_LMS[i]) {
106                         /* We only enable interrupts if the callback is set */
107                         bridge->lm_callback[i](bridge->lm_data[i]);
108                         serviced |= TSI148_LCSR_INTC_LMC[i];
109                 }
110         }
111 
112         return serviced;
113 }
114 
115 /*
116  * Wake up mail box queue.
117  *
118  * XXX This functionality is not exposed up though API.
119  */
120 static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
121 {
122         int i;
123         u32 val;
124         u32 serviced = 0;
125         struct tsi148_driver *bridge;
126 
127         bridge = tsi148_bridge->driver_priv;
128 
129         for (i = 0; i < 4; i++) {
130                 if (stat & TSI148_LCSR_INTS_MBS[i]) {
131                         val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
132                         dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
133                                 ": 0x%x\n", i, val);
134                         serviced |= TSI148_LCSR_INTC_MBC[i];
135                 }
136         }
137 
138         return serviced;
139 }
140 
141 /*
142  * Display error & status message when PERR (PCI) exception interrupt occurs.
143  */
144 static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
145 {
146         struct tsi148_driver *bridge;
147 
148         bridge = tsi148_bridge->driver_priv;
149 
150         dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
151                 "attributes: %08x\n",
152                 ioread32be(bridge->base + TSI148_LCSR_EDPAU),
153                 ioread32be(bridge->base + TSI148_LCSR_EDPAL),
154                 ioread32be(bridge->base + TSI148_LCSR_EDPAT));
155 
156         dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
157                 "completion reg: %08x\n",
158                 ioread32be(bridge->base + TSI148_LCSR_EDPXA),
159                 ioread32be(bridge->base + TSI148_LCSR_EDPXS));
160 
161         iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
162 
163         return TSI148_LCSR_INTC_PERRC;
164 }
165 
166 /*
167  * Save address and status when VME error interrupt occurs.
168  */
169 static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
170 {
171         unsigned int error_addr_high, error_addr_low;
172         unsigned long long error_addr;
173         u32 error_attrib;
174         int error_am;
175         struct tsi148_driver *bridge;
176 
177         bridge = tsi148_bridge->driver_priv;
178 
179         error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
180         error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
181         error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
182         error_am = (error_attrib & TSI148_LCSR_VEAT_AM_M) >> 8;
183 
184         reg_join(error_addr_high, error_addr_low, &error_addr);
185 
186         /* Check for exception register overflow (we have lost error data) */
187         if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
188                 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
189                         "Occurred\n");
190         }
191 
192         if (err_chk)
193                 vme_bus_error_handler(tsi148_bridge, error_addr, error_am);
194         else
195                 dev_err(tsi148_bridge->parent,
196                         "VME Bus Error at address: 0x%llx, attributes: %08x\n",
197                         error_addr, error_attrib);
198 
199         /* Clear Status */
200         iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
201 
202         return TSI148_LCSR_INTC_VERRC;
203 }
204 
205 /*
206  * Wake up IACK queue.
207  */
208 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
209 {
210         wake_up(&bridge->iack_queue);
211 
212         return TSI148_LCSR_INTC_IACKC;
213 }
214 
215 /*
216  * Calling VME bus interrupt callback if provided.
217  */
218 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
219         u32 stat)
220 {
221         int vec, i, serviced = 0;
222         struct tsi148_driver *bridge;
223 
224         bridge = tsi148_bridge->driver_priv;
225 
226         for (i = 7; i > 0; i--) {
227                 if (stat & (1 << i)) {
228                         /*
229                          * Note: Even though the registers are defined as
230                          * 32-bits in the spec, we only want to issue 8-bit
231                          * IACK cycles on the bus, read from offset 3.
232                          */
233                         vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
234 
235                         vme_irq_handler(tsi148_bridge, i, vec);
236 
237                         serviced |= (1 << i);
238                 }
239         }
240 
241         return serviced;
242 }
243 
244 /*
245  * Top level interrupt handler.  Clears appropriate interrupt status bits and
246  * then calls appropriate sub handler(s).
247  */
248 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
249 {
250         u32 stat, enable, serviced = 0;
251         struct vme_bridge *tsi148_bridge;
252         struct tsi148_driver *bridge;
253 
254         tsi148_bridge = ptr;
255 
256         bridge = tsi148_bridge->driver_priv;
257 
258         /* Determine which interrupts are unmasked and set */
259         enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
260         stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
261 
262         /* Only look at unmasked interrupts */
263         stat &= enable;
264 
265         if (unlikely(!stat))
266                 return IRQ_NONE;
267 
268         /* Call subhandlers as appropriate */
269         /* DMA irqs */
270         if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
271                 serviced |= tsi148_DMA_irqhandler(bridge, stat);
272 
273         /* Location monitor irqs */
274         if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
275                         TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
276                 serviced |= tsi148_LM_irqhandler(bridge, stat);
277 
278         /* Mail box irqs */
279         if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
280                         TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
281                 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
282 
283         /* PCI bus error */
284         if (stat & TSI148_LCSR_INTS_PERRS)
285                 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
286 
287         /* VME bus error */
288         if (stat & TSI148_LCSR_INTS_VERRS)
289                 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
290 
291         /* IACK irq */
292         if (stat & TSI148_LCSR_INTS_IACKS)
293                 serviced |= tsi148_IACK_irqhandler(bridge);
294 
295         /* VME bus irqs */
296         if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
297                         TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
298                         TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
299                         TSI148_LCSR_INTS_IRQ1S))
300                 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
301 
302         /* Clear serviced interrupts */
303         iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
304 
305         return IRQ_HANDLED;
306 }
307 
308 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
309 {
310         int result;
311         unsigned int tmp;
312         struct pci_dev *pdev;
313         struct tsi148_driver *bridge;
314 
315         pdev = to_pci_dev(tsi148_bridge->parent);
316 
317         bridge = tsi148_bridge->driver_priv;
318 
319         result = request_irq(pdev->irq,
320                              tsi148_irqhandler,
321                              IRQF_SHARED,
322                              driver_name, tsi148_bridge);
323         if (result) {
324                 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
325                         "vector %02X\n", pdev->irq);
326                 return result;
327         }
328 
329         /* Enable and unmask interrupts */
330         tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
331                 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
332                 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
333                 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
334                 TSI148_LCSR_INTEO_IACKEO;
335 
336         /* This leaves the following interrupts masked.
337          * TSI148_LCSR_INTEO_VIEEO
338          * TSI148_LCSR_INTEO_SYSFLEO
339          * TSI148_LCSR_INTEO_ACFLEO
340          */
341 
342         /* Don't enable Location Monitor interrupts here - they will be
343          * enabled when the location monitors are properly configured and
344          * a callback has been attached.
345          * TSI148_LCSR_INTEO_LM0EO
346          * TSI148_LCSR_INTEO_LM1EO
347          * TSI148_LCSR_INTEO_LM2EO
348          * TSI148_LCSR_INTEO_LM3EO
349          */
350 
351         /* Don't enable VME interrupts until we add a handler, else the board
352          * will respond to it and we don't want that unless it knows how to
353          * properly deal with it.
354          * TSI148_LCSR_INTEO_IRQ7EO
355          * TSI148_LCSR_INTEO_IRQ6EO
356          * TSI148_LCSR_INTEO_IRQ5EO
357          * TSI148_LCSR_INTEO_IRQ4EO
358          * TSI148_LCSR_INTEO_IRQ3EO
359          * TSI148_LCSR_INTEO_IRQ2EO
360          * TSI148_LCSR_INTEO_IRQ1EO
361          */
362 
363         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
364         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
365 
366         return 0;
367 }
368 
369 static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
370         struct pci_dev *pdev)
371 {
372         struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
373 
374         /* Turn off interrupts */
375         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
376         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
377 
378         /* Clear all interrupts */
379         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
380 
381         /* Detach interrupt handler */
382         free_irq(pdev->irq, tsi148_bridge);
383 }
384 
385 /*
386  * Check to see if an IACk has been received, return true (1) or false (0).
387  */
388 static int tsi148_iack_received(struct tsi148_driver *bridge)
389 {
390         u32 tmp;
391 
392         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
393 
394         if (tmp & TSI148_LCSR_VICR_IRQS)
395                 return 0;
396         else
397                 return 1;
398 }
399 
400 /*
401  * Configure VME interrupt
402  */
403 static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
404         int state, int sync)
405 {
406         struct pci_dev *pdev;
407         u32 tmp;
408         struct tsi148_driver *bridge;
409 
410         bridge = tsi148_bridge->driver_priv;
411 
412         /* We need to do the ordering differently for enabling and disabling */
413         if (state == 0) {
414                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
415                 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
416                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
417 
418                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
419                 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
420                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
421 
422                 if (sync != 0) {
423                         pdev = to_pci_dev(tsi148_bridge->parent);
424                         synchronize_irq(pdev->irq);
425                 }
426         } else {
427                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
428                 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
429                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
430 
431                 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
432                 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
433                 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
434         }
435 }
436 
437 /*
438  * Generate a VME bus interrupt at the requested level & vector. Wait for
439  * interrupt to be acked.
440  */
441 static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
442         int statid)
443 {
444         u32 tmp;
445         struct tsi148_driver *bridge;
446 
447         bridge = tsi148_bridge->driver_priv;
448 
449         mutex_lock(&bridge->vme_int);
450 
451         /* Read VICR register */
452         tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
453 
454         /* Set Status/ID */
455         tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
456                 (statid & TSI148_LCSR_VICR_STID_M);
457         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
458 
459         /* Assert VMEbus IRQ */
460         tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
461         iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
462 
463         /* XXX Consider implementing a timeout? */
464         wait_event_interruptible(bridge->iack_queue,
465                 tsi148_iack_received(bridge));
466 
467         mutex_unlock(&bridge->vme_int);
468 
469         return 0;
470 }
471 
472 /*
473  * Initialize a slave window with the requested attributes.
474  */
475 static int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
476         unsigned long long vme_base, unsigned long long size,
477         dma_addr_t pci_base, u32 aspace, u32 cycle)
478 {
479         unsigned int i, addr = 0, granularity = 0;
480         unsigned int temp_ctl = 0;
481         unsigned int vme_base_low, vme_base_high;
482         unsigned int vme_bound_low, vme_bound_high;
483         unsigned int pci_offset_low, pci_offset_high;
484         unsigned long long vme_bound, pci_offset;
485         struct vme_bridge *tsi148_bridge;
486         struct tsi148_driver *bridge;
487 
488         tsi148_bridge = image->parent;
489         bridge = tsi148_bridge->driver_priv;
490 
491         i = image->number;
492 
493         switch (aspace) {
494         case VME_A16:
495                 granularity = 0x10;
496                 addr |= TSI148_LCSR_ITAT_AS_A16;
497                 break;
498         case VME_A24:
499                 granularity = 0x1000;
500                 addr |= TSI148_LCSR_ITAT_AS_A24;
501                 break;
502         case VME_A32:
503                 granularity = 0x10000;
504                 addr |= TSI148_LCSR_ITAT_AS_A32;
505                 break;
506         case VME_A64:
507                 granularity = 0x10000;
508                 addr |= TSI148_LCSR_ITAT_AS_A64;
509                 break;
510         default:
511                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
512                 return -EINVAL;
513                 break;
514         }
515 
516         /* Convert 64-bit variables to 2x 32-bit variables */
517         reg_split(vme_base, &vme_base_high, &vme_base_low);
518 
519         /*
520          * Bound address is a valid address for the window, adjust
521          * accordingly
522          */
523         vme_bound = vme_base + size - granularity;
524         reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
525         pci_offset = (unsigned long long)pci_base - vme_base;
526         reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
527 
528         if (vme_base_low & (granularity - 1)) {
529                 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
530                 return -EINVAL;
531         }
532         if (vme_bound_low & (granularity - 1)) {
533                 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
534                 return -EINVAL;
535         }
536         if (pci_offset_low & (granularity - 1)) {
537                 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
538                         "alignment\n");
539                 return -EINVAL;
540         }
541 
542         /*  Disable while we are mucking around */
543         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
544                 TSI148_LCSR_OFFSET_ITAT);
545         temp_ctl &= ~TSI148_LCSR_ITAT_EN;
546         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
547                 TSI148_LCSR_OFFSET_ITAT);
548 
549         /* Setup mapping */
550         iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
551                 TSI148_LCSR_OFFSET_ITSAU);
552         iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
553                 TSI148_LCSR_OFFSET_ITSAL);
554         iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
555                 TSI148_LCSR_OFFSET_ITEAU);
556         iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
557                 TSI148_LCSR_OFFSET_ITEAL);
558         iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
559                 TSI148_LCSR_OFFSET_ITOFU);
560         iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
561                 TSI148_LCSR_OFFSET_ITOFL);
562 
563         /* Setup 2eSST speeds */
564         temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
565         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
566         case VME_2eSST160:
567                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
568                 break;
569         case VME_2eSST267:
570                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
571                 break;
572         case VME_2eSST320:
573                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
574                 break;
575         }
576 
577         /* Setup cycle types */
578         temp_ctl &= ~(0x1F << 7);
579         if (cycle & VME_BLT)
580                 temp_ctl |= TSI148_LCSR_ITAT_BLT;
581         if (cycle & VME_MBLT)
582                 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
583         if (cycle & VME_2eVME)
584                 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
585         if (cycle & VME_2eSST)
586                 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
587         if (cycle & VME_2eSSTB)
588                 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
589 
590         /* Setup address space */
591         temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
592         temp_ctl |= addr;
593 
594         temp_ctl &= ~0xF;
595         if (cycle & VME_SUPER)
596                 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
597         if (cycle & VME_USER)
598                 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
599         if (cycle & VME_PROG)
600                 temp_ctl |= TSI148_LCSR_ITAT_PGM;
601         if (cycle & VME_DATA)
602                 temp_ctl |= TSI148_LCSR_ITAT_DATA;
603 
604         /* Write ctl reg without enable */
605         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
606                 TSI148_LCSR_OFFSET_ITAT);
607 
608         if (enabled)
609                 temp_ctl |= TSI148_LCSR_ITAT_EN;
610 
611         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
612                 TSI148_LCSR_OFFSET_ITAT);
613 
614         return 0;
615 }
616 
617 /*
618  * Get slave window configuration.
619  */
620 static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
621         unsigned long long *vme_base, unsigned long long *size,
622         dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
623 {
624         unsigned int i, granularity = 0, ctl = 0;
625         unsigned int vme_base_low, vme_base_high;
626         unsigned int vme_bound_low, vme_bound_high;
627         unsigned int pci_offset_low, pci_offset_high;
628         unsigned long long vme_bound, pci_offset;
629         struct tsi148_driver *bridge;
630 
631         bridge = image->parent->driver_priv;
632 
633         i = image->number;
634 
635         /* Read registers */
636         ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
637                 TSI148_LCSR_OFFSET_ITAT);
638 
639         vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
640                 TSI148_LCSR_OFFSET_ITSAU);
641         vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
642                 TSI148_LCSR_OFFSET_ITSAL);
643         vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
644                 TSI148_LCSR_OFFSET_ITEAU);
645         vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
646                 TSI148_LCSR_OFFSET_ITEAL);
647         pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
648                 TSI148_LCSR_OFFSET_ITOFU);
649         pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
650                 TSI148_LCSR_OFFSET_ITOFL);
651 
652         /* Convert 64-bit variables to 2x 32-bit variables */
653         reg_join(vme_base_high, vme_base_low, vme_base);
654         reg_join(vme_bound_high, vme_bound_low, &vme_bound);
655         reg_join(pci_offset_high, pci_offset_low, &pci_offset);
656 
657         *pci_base = (dma_addr_t)(*vme_base + pci_offset);
658 
659         *enabled = 0;
660         *aspace = 0;
661         *cycle = 0;
662 
663         if (ctl & TSI148_LCSR_ITAT_EN)
664                 *enabled = 1;
665 
666         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
667                 granularity = 0x10;
668                 *aspace |= VME_A16;
669         }
670         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
671                 granularity = 0x1000;
672                 *aspace |= VME_A24;
673         }
674         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
675                 granularity = 0x10000;
676                 *aspace |= VME_A32;
677         }
678         if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
679                 granularity = 0x10000;
680                 *aspace |= VME_A64;
681         }
682 
683         /* Need granularity before we set the size */
684         *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
685 
686 
687         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
688                 *cycle |= VME_2eSST160;
689         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
690                 *cycle |= VME_2eSST267;
691         if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
692                 *cycle |= VME_2eSST320;
693 
694         if (ctl & TSI148_LCSR_ITAT_BLT)
695                 *cycle |= VME_BLT;
696         if (ctl & TSI148_LCSR_ITAT_MBLT)
697                 *cycle |= VME_MBLT;
698         if (ctl & TSI148_LCSR_ITAT_2eVME)
699                 *cycle |= VME_2eVME;
700         if (ctl & TSI148_LCSR_ITAT_2eSST)
701                 *cycle |= VME_2eSST;
702         if (ctl & TSI148_LCSR_ITAT_2eSSTB)
703                 *cycle |= VME_2eSSTB;
704 
705         if (ctl & TSI148_LCSR_ITAT_SUPR)
706                 *cycle |= VME_SUPER;
707         if (ctl & TSI148_LCSR_ITAT_NPRIV)
708                 *cycle |= VME_USER;
709         if (ctl & TSI148_LCSR_ITAT_PGM)
710                 *cycle |= VME_PROG;
711         if (ctl & TSI148_LCSR_ITAT_DATA)
712                 *cycle |= VME_DATA;
713 
714         return 0;
715 }
716 
717 /*
718  * Allocate and map PCI Resource
719  */
720 static int tsi148_alloc_resource(struct vme_master_resource *image,
721         unsigned long long size)
722 {
723         unsigned long long existing_size;
724         int retval = 0;
725         struct pci_dev *pdev;
726         struct vme_bridge *tsi148_bridge;
727 
728         tsi148_bridge = image->parent;
729 
730         pdev = to_pci_dev(tsi148_bridge->parent);
731 
732         existing_size = (unsigned long long)(image->bus_resource.end -
733                 image->bus_resource.start);
734 
735         /* If the existing size is OK, return */
736         if ((size != 0) && (existing_size == (size - 1)))
737                 return 0;
738 
739         if (existing_size != 0) {
740                 iounmap(image->kern_base);
741                 image->kern_base = NULL;
742                 kfree(image->bus_resource.name);
743                 release_resource(&image->bus_resource);
744                 memset(&image->bus_resource, 0, sizeof(struct resource));
745         }
746 
747         /* Exit here if size is zero */
748         if (size == 0)
749                 return 0;
750 
751         if (image->bus_resource.name == NULL) {
752                 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
753                 if (image->bus_resource.name == NULL) {
754                         dev_err(tsi148_bridge->parent, "Unable to allocate "
755                                 "memory for resource name\n");
756                         retval = -ENOMEM;
757                         goto err_name;
758                 }
759         }
760 
761         sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
762                 image->number);
763 
764         image->bus_resource.start = 0;
765         image->bus_resource.end = (unsigned long)size;
766         image->bus_resource.flags = IORESOURCE_MEM;
767 
768         retval = pci_bus_alloc_resource(pdev->bus,
769                 &image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM,
770                 0, NULL, NULL);
771         if (retval) {
772                 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
773                         "resource for window %d size 0x%lx start 0x%lx\n",
774                         image->number, (unsigned long)size,
775                         (unsigned long)image->bus_resource.start);
776                 goto err_resource;
777         }
778 
779         image->kern_base = ioremap_nocache(
780                 image->bus_resource.start, size);
781         if (image->kern_base == NULL) {
782                 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
783                 retval = -ENOMEM;
784                 goto err_remap;
785         }
786 
787         return 0;
788 
789 err_remap:
790         release_resource(&image->bus_resource);
791 err_resource:
792         kfree(image->bus_resource.name);
793         memset(&image->bus_resource, 0, sizeof(struct resource));
794 err_name:
795         return retval;
796 }
797 
798 /*
799  * Free and unmap PCI Resource
800  */
801 static void tsi148_free_resource(struct vme_master_resource *image)
802 {
803         iounmap(image->kern_base);
804         image->kern_base = NULL;
805         release_resource(&image->bus_resource);
806         kfree(image->bus_resource.name);
807         memset(&image->bus_resource, 0, sizeof(struct resource));
808 }
809 
810 /*
811  * Set the attributes of an outbound window.
812  */
813 static int tsi148_master_set(struct vme_master_resource *image, int enabled,
814         unsigned long long vme_base, unsigned long long size, u32 aspace,
815         u32 cycle, u32 dwidth)
816 {
817         int retval = 0;
818         unsigned int i;
819         unsigned int temp_ctl = 0;
820         unsigned int pci_base_low, pci_base_high;
821         unsigned int pci_bound_low, pci_bound_high;
822         unsigned int vme_offset_low, vme_offset_high;
823         unsigned long long pci_bound, vme_offset, pci_base;
824         struct vme_bridge *tsi148_bridge;
825         struct tsi148_driver *bridge;
826         struct pci_bus_region region;
827         struct pci_dev *pdev;
828 
829         tsi148_bridge = image->parent;
830 
831         bridge = tsi148_bridge->driver_priv;
832 
833         pdev = to_pci_dev(tsi148_bridge->parent);
834 
835         /* Verify input data */
836         if (vme_base & 0xFFFF) {
837                 dev_err(tsi148_bridge->parent, "Invalid VME Window "
838                         "alignment\n");
839                 retval = -EINVAL;
840                 goto err_window;
841         }
842 
843         if ((size == 0) && (enabled != 0)) {
844                 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
845                         "enabled windows\n");
846                 retval = -EINVAL;
847                 goto err_window;
848         }
849 
850         spin_lock(&image->lock);
851 
852         /* Let's allocate the resource here rather than further up the stack as
853          * it avoids pushing loads of bus dependent stuff up the stack. If size
854          * is zero, any existing resource will be freed.
855          */
856         retval = tsi148_alloc_resource(image, size);
857         if (retval) {
858                 spin_unlock(&image->lock);
859                 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
860                         "resource\n");
861                 goto err_res;
862         }
863 
864         if (size == 0) {
865                 pci_base = 0;
866                 pci_bound = 0;
867                 vme_offset = 0;
868         } else {
869                 pcibios_resource_to_bus(pdev->bus, &region,
870                                         &image->bus_resource);
871                 pci_base = region.start;
872 
873                 /*
874                  * Bound address is a valid address for the window, adjust
875                  * according to window granularity.
876                  */
877                 pci_bound = pci_base + (size - 0x10000);
878                 vme_offset = vme_base - pci_base;
879         }
880 
881         /* Convert 64-bit variables to 2x 32-bit variables */
882         reg_split(pci_base, &pci_base_high, &pci_base_low);
883         reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
884         reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
885 
886         if (pci_base_low & 0xFFFF) {
887                 spin_unlock(&image->lock);
888                 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
889                 retval = -EINVAL;
890                 goto err_gran;
891         }
892         if (pci_bound_low & 0xFFFF) {
893                 spin_unlock(&image->lock);
894                 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
895                 retval = -EINVAL;
896                 goto err_gran;
897         }
898         if (vme_offset_low & 0xFFFF) {
899                 spin_unlock(&image->lock);
900                 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
901                         "alignment\n");
902                 retval = -EINVAL;
903                 goto err_gran;
904         }
905 
906         i = image->number;
907 
908         /* Disable while we are mucking around */
909         temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
910                 TSI148_LCSR_OFFSET_OTAT);
911         temp_ctl &= ~TSI148_LCSR_OTAT_EN;
912         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
913                 TSI148_LCSR_OFFSET_OTAT);
914 
915         /* Setup 2eSST speeds */
916         temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
917         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
918         case VME_2eSST160:
919                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
920                 break;
921         case VME_2eSST267:
922                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
923                 break;
924         case VME_2eSST320:
925                 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
926                 break;
927         }
928 
929         /* Setup cycle types */
930         if (cycle & VME_BLT) {
931                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
932                 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
933         }
934         if (cycle & VME_MBLT) {
935                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
936                 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
937         }
938         if (cycle & VME_2eVME) {
939                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
940                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
941         }
942         if (cycle & VME_2eSST) {
943                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
944                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
945         }
946         if (cycle & VME_2eSSTB) {
947                 dev_warn(tsi148_bridge->parent, "Currently not setting "
948                         "Broadcast Select Registers\n");
949                 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
950                 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
951         }
952 
953         /* Setup data width */
954         temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
955         switch (dwidth) {
956         case VME_D16:
957                 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
958                 break;
959         case VME_D32:
960                 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
961                 break;
962         default:
963                 spin_unlock(&image->lock);
964                 dev_err(tsi148_bridge->parent, "Invalid data width\n");
965                 retval = -EINVAL;
966                 goto err_dwidth;
967         }
968 
969         /* Setup address space */
970         temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
971         switch (aspace) {
972         case VME_A16:
973                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
974                 break;
975         case VME_A24:
976                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
977                 break;
978         case VME_A32:
979                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
980                 break;
981         case VME_A64:
982                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
983                 break;
984         case VME_CRCSR:
985                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
986                 break;
987         case VME_USER1:
988                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
989                 break;
990         case VME_USER2:
991                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
992                 break;
993         case VME_USER3:
994                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
995                 break;
996         case VME_USER4:
997                 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
998                 break;
999         default:
1000                 spin_unlock(&image->lock);
1001                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1002                 retval = -EINVAL;
1003                 goto err_aspace;
1004                 break;
1005         }
1006 
1007         temp_ctl &= ~(3<<4);
1008         if (cycle & VME_SUPER)
1009                 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1010         if (cycle & VME_PROG)
1011                 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1012 
1013         /* Setup mapping */
1014         iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1015                 TSI148_LCSR_OFFSET_OTSAU);
1016         iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1017                 TSI148_LCSR_OFFSET_OTSAL);
1018         iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1019                 TSI148_LCSR_OFFSET_OTEAU);
1020         iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1021                 TSI148_LCSR_OFFSET_OTEAL);
1022         iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1023                 TSI148_LCSR_OFFSET_OTOFU);
1024         iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1025                 TSI148_LCSR_OFFSET_OTOFL);
1026 
1027         /* Write ctl reg without enable */
1028         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1029                 TSI148_LCSR_OFFSET_OTAT);
1030 
1031         if (enabled)
1032                 temp_ctl |= TSI148_LCSR_OTAT_EN;
1033 
1034         iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1035                 TSI148_LCSR_OFFSET_OTAT);
1036 
1037         spin_unlock(&image->lock);
1038         return 0;
1039 
1040 err_aspace:
1041 err_dwidth:
1042 err_gran:
1043         tsi148_free_resource(image);
1044 err_res:
1045 err_window:
1046         return retval;
1047 
1048 }
1049 
1050 /*
1051  * Set the attributes of an outbound window.
1052  *
1053  * XXX Not parsing prefetch information.
1054  */
1055 static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1056         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1057         u32 *cycle, u32 *dwidth)
1058 {
1059         unsigned int i, ctl;
1060         unsigned int pci_base_low, pci_base_high;
1061         unsigned int pci_bound_low, pci_bound_high;
1062         unsigned int vme_offset_low, vme_offset_high;
1063 
1064         unsigned long long pci_base, pci_bound, vme_offset;
1065         struct tsi148_driver *bridge;
1066 
1067         bridge = image->parent->driver_priv;
1068 
1069         i = image->number;
1070 
1071         ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1072                 TSI148_LCSR_OFFSET_OTAT);
1073 
1074         pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1075                 TSI148_LCSR_OFFSET_OTSAU);
1076         pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1077                 TSI148_LCSR_OFFSET_OTSAL);
1078         pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1079                 TSI148_LCSR_OFFSET_OTEAU);
1080         pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1081                 TSI148_LCSR_OFFSET_OTEAL);
1082         vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1083                 TSI148_LCSR_OFFSET_OTOFU);
1084         vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1085                 TSI148_LCSR_OFFSET_OTOFL);
1086 
1087         /* Convert 64-bit variables to 2x 32-bit variables */
1088         reg_join(pci_base_high, pci_base_low, &pci_base);
1089         reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1090         reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1091 
1092         *vme_base = pci_base + vme_offset;
1093         *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1094 
1095         *enabled = 0;
1096         *aspace = 0;
1097         *cycle = 0;
1098         *dwidth = 0;
1099 
1100         if (ctl & TSI148_LCSR_OTAT_EN)
1101                 *enabled = 1;
1102 
1103         /* Setup address space */
1104         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1105                 *aspace |= VME_A16;
1106         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1107                 *aspace |= VME_A24;
1108         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1109                 *aspace |= VME_A32;
1110         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1111                 *aspace |= VME_A64;
1112         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1113                 *aspace |= VME_CRCSR;
1114         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1115                 *aspace |= VME_USER1;
1116         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1117                 *aspace |= VME_USER2;
1118         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1119                 *aspace |= VME_USER3;
1120         if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1121                 *aspace |= VME_USER4;
1122 
1123         /* Setup 2eSST speeds */
1124         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1125                 *cycle |= VME_2eSST160;
1126         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1127                 *cycle |= VME_2eSST267;
1128         if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1129                 *cycle |= VME_2eSST320;
1130 
1131         /* Setup cycle types */
1132         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1133                 *cycle |= VME_SCT;
1134         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1135                 *cycle |= VME_BLT;
1136         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1137                 *cycle |= VME_MBLT;
1138         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1139                 *cycle |= VME_2eVME;
1140         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1141                 *cycle |= VME_2eSST;
1142         if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1143                 *cycle |= VME_2eSSTB;
1144 
1145         if (ctl & TSI148_LCSR_OTAT_SUP)
1146                 *cycle |= VME_SUPER;
1147         else
1148                 *cycle |= VME_USER;
1149 
1150         if (ctl & TSI148_LCSR_OTAT_PGM)
1151                 *cycle |= VME_PROG;
1152         else
1153                 *cycle |= VME_DATA;
1154 
1155         /* Setup data width */
1156         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1157                 *dwidth = VME_D16;
1158         if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1159                 *dwidth = VME_D32;
1160 
1161         return 0;
1162 }
1163 
1164 
1165 static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1166         unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1167         u32 *cycle, u32 *dwidth)
1168 {
1169         int retval;
1170 
1171         spin_lock(&image->lock);
1172 
1173         retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1174                 cycle, dwidth);
1175 
1176         spin_unlock(&image->lock);
1177 
1178         return retval;
1179 }
1180 
1181 static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1182         size_t count, loff_t offset)
1183 {
1184         int retval, enabled;
1185         unsigned long long vme_base, size;
1186         u32 aspace, cycle, dwidth;
1187         struct vme_error_handler *handler = NULL;
1188         struct vme_bridge *tsi148_bridge;
1189         void __iomem *addr = image->kern_base + offset;
1190         unsigned int done = 0;
1191         unsigned int count32;
1192 
1193         tsi148_bridge = image->parent;
1194 
1195         spin_lock(&image->lock);
1196 
1197         if (err_chk) {
1198                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1199                                     &cycle, &dwidth);
1200                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1201                                                      vme_base + offset, count);
1202                 if (!handler) {
1203                         spin_unlock(&image->lock);
1204                         return -ENOMEM;
1205                 }
1206         }
1207 
1208         /* The following code handles VME address alignment. We cannot use
1209          * memcpy_xxx here because it may cut data transfers in to 8-bit
1210          * cycles when D16 or D32 cycles are required on the VME bus.
1211          * On the other hand, the bridge itself assures that the maximum data
1212          * cycle configured for the transfer is used and splits it
1213          * automatically for non-aligned addresses, so we don't want the
1214          * overhead of needlessly forcing small transfers for the entire cycle.
1215          */
1216         if ((uintptr_t)addr & 0x1) {
1217                 *(u8 *)buf = ioread8(addr);
1218                 done += 1;
1219                 if (done == count)
1220                         goto out;
1221         }
1222         if ((uintptr_t)(addr + done) & 0x2) {
1223                 if ((count - done) < 2) {
1224                         *(u8 *)(buf + done) = ioread8(addr + done);
1225                         done += 1;
1226                         goto out;
1227                 } else {
1228                         *(u16 *)(buf + done) = ioread16(addr + done);
1229                         done += 2;
1230                 }
1231         }
1232 
1233         count32 = (count - done) & ~0x3;
1234         while (done < count32) {
1235                 *(u32 *)(buf + done) = ioread32(addr + done);
1236                 done += 4;
1237         }
1238 
1239         if ((count - done) & 0x2) {
1240                 *(u16 *)(buf + done) = ioread16(addr + done);
1241                 done += 2;
1242         }
1243         if ((count - done) & 0x1) {
1244                 *(u8 *)(buf + done) = ioread8(addr + done);
1245                 done += 1;
1246         }
1247 
1248 out:
1249         retval = count;
1250 
1251         if (err_chk) {
1252                 if (handler->num_errors) {
1253                         dev_err(image->parent->parent,
1254                                 "First VME read error detected an at address 0x%llx\n",
1255                                 handler->first_error);
1256                         retval = handler->first_error - (vme_base + offset);
1257                 }
1258                 vme_unregister_error_handler(handler);
1259         }
1260 
1261         spin_unlock(&image->lock);
1262 
1263         return retval;
1264 }
1265 
1266 
1267 static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1268         size_t count, loff_t offset)
1269 {
1270         int retval = 0, enabled;
1271         unsigned long long vme_base, size;
1272         u32 aspace, cycle, dwidth;
1273         void __iomem *addr = image->kern_base + offset;
1274         unsigned int done = 0;
1275         unsigned int count32;
1276 
1277         struct vme_error_handler *handler = NULL;
1278         struct vme_bridge *tsi148_bridge;
1279         struct tsi148_driver *bridge;
1280 
1281         tsi148_bridge = image->parent;
1282 
1283         bridge = tsi148_bridge->driver_priv;
1284 
1285         spin_lock(&image->lock);
1286 
1287         if (err_chk) {
1288                 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace,
1289                                     &cycle, &dwidth);
1290                 handler = vme_register_error_handler(tsi148_bridge, aspace,
1291                                                      vme_base + offset, count);
1292                 if (!handler) {
1293                         spin_unlock(&image->lock);
1294                         return -ENOMEM;
1295                 }
1296         }
1297 
1298         /* Here we apply for the same strategy we do in master_read
1299          * function in order to assure the correct cycles.
1300          */
1301         if ((uintptr_t)addr & 0x1) {
1302                 iowrite8(*(u8 *)buf, addr);
1303                 done += 1;
1304                 if (done == count)
1305                         goto out;
1306         }
1307         if ((uintptr_t)(addr + done) & 0x2) {
1308                 if ((count - done) < 2) {
1309                         iowrite8(*(u8 *)(buf + done), addr + done);
1310                         done += 1;
1311                         goto out;
1312                 } else {
1313                         iowrite16(*(u16 *)(buf + done), addr + done);
1314                         done += 2;
1315                 }
1316         }
1317 
1318         count32 = (count - done) & ~0x3;
1319         while (done < count32) {
1320                 iowrite32(*(u32 *)(buf + done), addr + done);
1321                 done += 4;
1322         }
1323 
1324         if ((count - done) & 0x2) {
1325                 iowrite16(*(u16 *)(buf + done), addr + done);
1326                 done += 2;
1327         }
1328         if ((count - done) & 0x1) {
1329                 iowrite8(*(u8 *)(buf + done), addr + done);
1330                 done += 1;
1331         }
1332 
1333 out:
1334         retval = count;
1335 
1336         /*
1337          * Writes are posted. We need to do a read on the VME bus to flush out
1338          * all of the writes before we check for errors. We can't guarantee
1339          * that reading the data we have just written is safe. It is believed
1340          * that there isn't any read, write re-ordering, so we can read any
1341          * location in VME space, so lets read the Device ID from the tsi148's
1342          * own registers as mapped into CR/CSR space.
1343          *
1344          * We check for saved errors in the written address range/space.
1345          */
1346 
1347         if (err_chk) {
1348                 ioread16(bridge->flush_image->kern_base + 0x7F000);
1349 
1350                 if (handler->num_errors) {
1351                         dev_warn(tsi148_bridge->parent,
1352                                  "First VME write error detected an at address 0x%llx\n",
1353                                  handler->first_error);
1354                         retval = handler->first_error - (vme_base + offset);
1355                 }
1356                 vme_unregister_error_handler(handler);
1357         }
1358 
1359         spin_unlock(&image->lock);
1360 
1361         return retval;
1362 }
1363 
1364 /*
1365  * Perform an RMW cycle on the VME bus.
1366  *
1367  * Requires a previously configured master window, returns final value.
1368  */
1369 static unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1370         unsigned int mask, unsigned int compare, unsigned int swap,
1371         loff_t offset)
1372 {
1373         unsigned long long pci_addr;
1374         unsigned int pci_addr_high, pci_addr_low;
1375         u32 tmp, result;
1376         int i;
1377         struct tsi148_driver *bridge;
1378 
1379         bridge = image->parent->driver_priv;
1380 
1381         /* Find the PCI address that maps to the desired VME address */
1382         i = image->number;
1383 
1384         /* Locking as we can only do one of these at a time */
1385         mutex_lock(&bridge->vme_rmw);
1386 
1387         /* Lock image */
1388         spin_lock(&image->lock);
1389 
1390         pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1391                 TSI148_LCSR_OFFSET_OTSAU);
1392         pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1393                 TSI148_LCSR_OFFSET_OTSAL);
1394 
1395         reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1396         reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1397 
1398         /* Configure registers */
1399         iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1400         iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1401         iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1402         iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1403         iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1404 
1405         /* Enable RMW */
1406         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1407         tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1408         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1409 
1410         /* Kick process off with a read to the required address. */
1411         result = ioread32be(image->kern_base + offset);
1412 
1413         /* Disable RMW */
1414         tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1415         tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1416         iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1417 
1418         spin_unlock(&image->lock);
1419 
1420         mutex_unlock(&bridge->vme_rmw);
1421 
1422         return result;
1423 }
1424 
1425 static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
1426         u32 aspace, u32 cycle, u32 dwidth)
1427 {
1428         u32 val;
1429 
1430         val = be32_to_cpu(*attr);
1431 
1432         /* Setup 2eSST speeds */
1433         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1434         case VME_2eSST160:
1435                 val |= TSI148_LCSR_DSAT_2eSSTM_160;
1436                 break;
1437         case VME_2eSST267:
1438                 val |= TSI148_LCSR_DSAT_2eSSTM_267;
1439                 break;
1440         case VME_2eSST320:
1441                 val |= TSI148_LCSR_DSAT_2eSSTM_320;
1442                 break;
1443         }
1444 
1445         /* Setup cycle types */
1446         if (cycle & VME_SCT)
1447                 val |= TSI148_LCSR_DSAT_TM_SCT;
1448 
1449         if (cycle & VME_BLT)
1450                 val |= TSI148_LCSR_DSAT_TM_BLT;
1451 
1452         if (cycle & VME_MBLT)
1453                 val |= TSI148_LCSR_DSAT_TM_MBLT;
1454 
1455         if (cycle & VME_2eVME)
1456                 val |= TSI148_LCSR_DSAT_TM_2eVME;
1457 
1458         if (cycle & VME_2eSST)
1459                 val |= TSI148_LCSR_DSAT_TM_2eSST;
1460 
1461         if (cycle & VME_2eSSTB) {
1462                 dev_err(dev, "Currently not setting Broadcast Select "
1463                         "Registers\n");
1464                 val |= TSI148_LCSR_DSAT_TM_2eSSTB;
1465         }
1466 
1467         /* Setup data width */
1468         switch (dwidth) {
1469         case VME_D16:
1470                 val |= TSI148_LCSR_DSAT_DBW_16;
1471                 break;
1472         case VME_D32:
1473                 val |= TSI148_LCSR_DSAT_DBW_32;
1474                 break;
1475         default:
1476                 dev_err(dev, "Invalid data width\n");
1477                 return -EINVAL;
1478         }
1479 
1480         /* Setup address space */
1481         switch (aspace) {
1482         case VME_A16:
1483                 val |= TSI148_LCSR_DSAT_AMODE_A16;
1484                 break;
1485         case VME_A24:
1486                 val |= TSI148_LCSR_DSAT_AMODE_A24;
1487                 break;
1488         case VME_A32:
1489                 val |= TSI148_LCSR_DSAT_AMODE_A32;
1490                 break;
1491         case VME_A64:
1492                 val |= TSI148_LCSR_DSAT_AMODE_A64;
1493                 break;
1494         case VME_CRCSR:
1495                 val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1496                 break;
1497         case VME_USER1:
1498                 val |= TSI148_LCSR_DSAT_AMODE_USER1;
1499                 break;
1500         case VME_USER2:
1501                 val |= TSI148_LCSR_DSAT_AMODE_USER2;
1502                 break;
1503         case VME_USER3:
1504                 val |= TSI148_LCSR_DSAT_AMODE_USER3;
1505                 break;
1506         case VME_USER4:
1507                 val |= TSI148_LCSR_DSAT_AMODE_USER4;
1508                 break;
1509         default:
1510                 dev_err(dev, "Invalid address space\n");
1511                 return -EINVAL;
1512                 break;
1513         }
1514 
1515         if (cycle & VME_SUPER)
1516                 val |= TSI148_LCSR_DSAT_SUP;
1517         if (cycle & VME_PROG)
1518                 val |= TSI148_LCSR_DSAT_PGM;
1519 
1520         *attr = cpu_to_be32(val);
1521 
1522         return 0;
1523 }
1524 
1525 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
1526         u32 aspace, u32 cycle, u32 dwidth)
1527 {
1528         u32 val;
1529 
1530         val = be32_to_cpu(*attr);
1531 
1532         /* Setup 2eSST speeds */
1533         switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1534         case VME_2eSST160:
1535                 val |= TSI148_LCSR_DDAT_2eSSTM_160;
1536                 break;
1537         case VME_2eSST267:
1538                 val |= TSI148_LCSR_DDAT_2eSSTM_267;
1539                 break;
1540         case VME_2eSST320:
1541                 val |= TSI148_LCSR_DDAT_2eSSTM_320;
1542                 break;
1543         }
1544 
1545         /* Setup cycle types */
1546         if (cycle & VME_SCT)
1547                 val |= TSI148_LCSR_DDAT_TM_SCT;
1548 
1549         if (cycle & VME_BLT)
1550                 val |= TSI148_LCSR_DDAT_TM_BLT;
1551 
1552         if (cycle & VME_MBLT)
1553                 val |= TSI148_LCSR_DDAT_TM_MBLT;
1554 
1555         if (cycle & VME_2eVME)
1556                 val |= TSI148_LCSR_DDAT_TM_2eVME;
1557 
1558         if (cycle & VME_2eSST)
1559                 val |= TSI148_LCSR_DDAT_TM_2eSST;
1560 
1561         if (cycle & VME_2eSSTB) {
1562                 dev_err(dev, "Currently not setting Broadcast Select "
1563                         "Registers\n");
1564                 val |= TSI148_LCSR_DDAT_TM_2eSSTB;
1565         }
1566 
1567         /* Setup data width */
1568         switch (dwidth) {
1569         case VME_D16:
1570                 val |= TSI148_LCSR_DDAT_DBW_16;
1571                 break;
1572         case VME_D32:
1573                 val |= TSI148_LCSR_DDAT_DBW_32;
1574                 break;
1575         default:
1576                 dev_err(dev, "Invalid data width\n");
1577                 return -EINVAL;
1578         }
1579 
1580         /* Setup address space */
1581         switch (aspace) {
1582         case VME_A16:
1583                 val |= TSI148_LCSR_DDAT_AMODE_A16;
1584                 break;
1585         case VME_A24:
1586                 val |= TSI148_LCSR_DDAT_AMODE_A24;
1587                 break;
1588         case VME_A32:
1589                 val |= TSI148_LCSR_DDAT_AMODE_A32;
1590                 break;
1591         case VME_A64:
1592                 val |= TSI148_LCSR_DDAT_AMODE_A64;
1593                 break;
1594         case VME_CRCSR:
1595                 val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1596                 break;
1597         case VME_USER1:
1598                 val |= TSI148_LCSR_DDAT_AMODE_USER1;
1599                 break;
1600         case VME_USER2:
1601                 val |= TSI148_LCSR_DDAT_AMODE_USER2;
1602                 break;
1603         case VME_USER3:
1604                 val |= TSI148_LCSR_DDAT_AMODE_USER3;
1605                 break;
1606         case VME_USER4:
1607                 val |= TSI148_LCSR_DDAT_AMODE_USER4;
1608                 break;
1609         default:
1610                 dev_err(dev, "Invalid address space\n");
1611                 return -EINVAL;
1612                 break;
1613         }
1614 
1615         if (cycle & VME_SUPER)
1616                 val |= TSI148_LCSR_DDAT_SUP;
1617         if (cycle & VME_PROG)
1618                 val |= TSI148_LCSR_DDAT_PGM;
1619 
1620         *attr = cpu_to_be32(val);
1621 
1622         return 0;
1623 }
1624 
1625 /*
1626  * Add a link list descriptor to the list
1627  *
1628  * Note: DMA engine expects the DMA descriptor to be big endian.
1629  */
1630 static int tsi148_dma_list_add(struct vme_dma_list *list,
1631         struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1632 {
1633         struct tsi148_dma_entry *entry, *prev;
1634         u32 address_high, address_low, val;
1635         struct vme_dma_pattern *pattern_attr;
1636         struct vme_dma_pci *pci_attr;
1637         struct vme_dma_vme *vme_attr;
1638         int retval = 0;
1639         struct vme_bridge *tsi148_bridge;
1640 
1641         tsi148_bridge = list->parent->parent;
1642 
1643         /* Descriptor must be aligned on 64-bit boundaries */
1644         entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
1645         if (entry == NULL) {
1646                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
1647                         "dma resource structure\n");
1648                 retval = -ENOMEM;
1649                 goto err_mem;
1650         }
1651 
1652         /* Test descriptor alignment */
1653         if ((unsigned long)&entry->descriptor & 0x7) {
1654                 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1655                         "byte boundary as required: %p\n",
1656                         &entry->descriptor);
1657                 retval = -EINVAL;
1658                 goto err_align;
1659         }
1660 
1661         /* Given we are going to fill out the structure, we probably don't
1662          * need to zero it, but better safe than sorry for now.
1663          */
1664         memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
1665 
1666         /* Fill out source part */
1667         switch (src->type) {
1668         case VME_DMA_PATTERN:
1669                 pattern_attr = src->private;
1670 
1671                 entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
1672 
1673                 val = TSI148_LCSR_DSAT_TYP_PAT;
1674 
1675                 /* Default behaviour is 32 bit pattern */
1676                 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1677                         val |= TSI148_LCSR_DSAT_PSZ;
1678 
1679                 /* It seems that the default behaviour is to increment */
1680                 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1681                         val |= TSI148_LCSR_DSAT_NIN;
1682                 entry->descriptor.dsat = cpu_to_be32(val);
1683                 break;
1684         case VME_DMA_PCI:
1685                 pci_attr = src->private;
1686 
1687                 reg_split((unsigned long long)pci_attr->address, &address_high,
1688                         &address_low);
1689                 entry->descriptor.dsau = cpu_to_be32(address_high);
1690                 entry->descriptor.dsal = cpu_to_be32(address_low);
1691                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
1692                 break;
1693         case VME_DMA_VME:
1694                 vme_attr = src->private;
1695 
1696                 reg_split((unsigned long long)vme_attr->address, &address_high,
1697                         &address_low);
1698                 entry->descriptor.dsau = cpu_to_be32(address_high);
1699                 entry->descriptor.dsal = cpu_to_be32(address_low);
1700                 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
1701 
1702                 retval = tsi148_dma_set_vme_src_attributes(
1703                         tsi148_bridge->parent, &entry->descriptor.dsat,
1704                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1705                 if (retval < 0)
1706                         goto err_source;
1707                 break;
1708         default:
1709                 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1710                 retval = -EINVAL;
1711                 goto err_source;
1712                 break;
1713         }
1714 
1715         /* Assume last link - this will be over-written by adding another */
1716         entry->descriptor.dnlau = cpu_to_be32(0);
1717         entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
1718 
1719         /* Fill out destination part */
1720         switch (dest->type) {
1721         case VME_DMA_PCI:
1722                 pci_attr = dest->private;
1723 
1724                 reg_split((unsigned long long)pci_attr->address, &address_high,
1725                         &address_low);
1726                 entry->descriptor.ddau = cpu_to_be32(address_high);
1727                 entry->descriptor.ddal = cpu_to_be32(address_low);
1728                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
1729                 break;
1730         case VME_DMA_VME:
1731                 vme_attr = dest->private;
1732 
1733                 reg_split((unsigned long long)vme_attr->address, &address_high,
1734                         &address_low);
1735                 entry->descriptor.ddau = cpu_to_be32(address_high);
1736                 entry->descriptor.ddal = cpu_to_be32(address_low);
1737                 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
1738 
1739                 retval = tsi148_dma_set_vme_dest_attributes(
1740                         tsi148_bridge->parent, &entry->descriptor.ddat,
1741                         vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1742                 if (retval < 0)
1743                         goto err_dest;
1744                 break;
1745         default:
1746                 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1747                 retval = -EINVAL;
1748                 goto err_dest;
1749                 break;
1750         }
1751 
1752         /* Fill out count */
1753         entry->descriptor.dcnt = cpu_to_be32((u32)count);
1754 
1755         /* Add to list */
1756         list_add_tail(&entry->list, &list->entries);
1757 
1758         entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1759                 &entry->descriptor,
1760                 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1761         if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) {
1762                 dev_err(tsi148_bridge->parent, "DMA mapping error\n");
1763                 retval = -EINVAL;
1764                 goto err_dma;
1765         }
1766 
1767         /* Fill out previous descriptors "Next Address" */
1768         if (entry->list.prev != &list->entries) {
1769                 reg_split((unsigned long long)entry->dma_handle, &address_high,
1770                         &address_low);
1771                 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1772                                   list);
1773                 prev->descriptor.dnlau = cpu_to_be32(address_high);
1774                 prev->descriptor.dnlal = cpu_to_be32(address_low);
1775 
1776         }
1777 
1778         return 0;
1779 
1780 err_dma:
1781 err_dest:
1782 err_source:
1783 err_align:
1784                 kfree(entry);
1785 err_mem:
1786         return retval;
1787 }
1788 
1789 /*
1790  * Check to see if the provided DMA channel is busy.
1791  */
1792 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1793 {
1794         u32 tmp;
1795         struct tsi148_driver *bridge;
1796 
1797         bridge = tsi148_bridge->driver_priv;
1798 
1799         tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1800                 TSI148_LCSR_OFFSET_DSTA);
1801 
1802         if (tmp & TSI148_LCSR_DSTA_BSY)
1803                 return 0;
1804         else
1805                 return 1;
1806 
1807 }
1808 
1809 /*
1810  * Execute a previously generated link list
1811  *
1812  * XXX Need to provide control register configuration.
1813  */
1814 static int tsi148_dma_list_exec(struct vme_dma_list *list)
1815 {
1816         struct vme_dma_resource *ctrlr;
1817         int channel, retval;
1818         struct tsi148_dma_entry *entry;
1819         u32 bus_addr_high, bus_addr_low;
1820         u32 val, dctlreg = 0;
1821         struct vme_bridge *tsi148_bridge;
1822         struct tsi148_driver *bridge;
1823 
1824         ctrlr = list->parent;
1825 
1826         tsi148_bridge = ctrlr->parent;
1827 
1828         bridge = tsi148_bridge->driver_priv;
1829 
1830         mutex_lock(&ctrlr->mtx);
1831 
1832         channel = ctrlr->number;
1833 
1834         if (!list_empty(&ctrlr->running)) {
1835                 /*
1836                  * XXX We have an active DMA transfer and currently haven't
1837                  *     sorted out the mechanism for "pending" DMA transfers.
1838                  *     Return busy.
1839                  */
1840                 /* Need to add to pending here */
1841                 mutex_unlock(&ctrlr->mtx);
1842                 return -EBUSY;
1843         } else {
1844                 list_add(&list->list, &ctrlr->running);
1845         }
1846 
1847         /* Get first bus address and write into registers */
1848         entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1849                 list);
1850 
1851         mutex_unlock(&ctrlr->mtx);
1852 
1853         reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
1854 
1855         iowrite32be(bus_addr_high, bridge->base +
1856                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1857         iowrite32be(bus_addr_low, bridge->base +
1858                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1859 
1860         dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1861                 TSI148_LCSR_OFFSET_DCTL);
1862 
1863         /* Start the operation */
1864         iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1865                 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1866 
1867         retval = wait_event_interruptible(bridge->dma_queue[channel],
1868                 tsi148_dma_busy(ctrlr->parent, channel));
1869 
1870         if (retval) {
1871                 iowrite32be(dctlreg | TSI148_LCSR_DCTL_ABT, bridge->base +
1872                         TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1873                 /* Wait for the operation to abort */
1874                 wait_event(bridge->dma_queue[channel],
1875                            tsi148_dma_busy(ctrlr->parent, channel));
1876                 retval = -EINTR;
1877                 goto exit;
1878         }
1879 
1880         /*
1881          * Read status register, this register is valid until we kick off a
1882          * new transfer.
1883          */
1884         val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1885                 TSI148_LCSR_OFFSET_DSTA);
1886 
1887         if (val & TSI148_LCSR_DSTA_VBE) {
1888                 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1889                 retval = -EIO;
1890         }
1891 
1892 exit:
1893         /* Remove list from running list */
1894         mutex_lock(&ctrlr->mtx);
1895         list_del(&list->list);
1896         mutex_unlock(&ctrlr->mtx);
1897 
1898         return retval;
1899 }
1900 
1901 /*
1902  * Clean up a previously generated link list
1903  *
1904  * We have a separate function, don't assume that the chain can't be reused.
1905  */
1906 static int tsi148_dma_list_empty(struct vme_dma_list *list)
1907 {
1908         struct list_head *pos, *temp;
1909         struct tsi148_dma_entry *entry;
1910 
1911         struct vme_bridge *tsi148_bridge = list->parent->parent;
1912 
1913         /* detach and free each entry */
1914         list_for_each_safe(pos, temp, &list->entries) {
1915                 list_del(pos);
1916                 entry = list_entry(pos, struct tsi148_dma_entry, list);
1917 
1918                 dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
1919                         sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1920                 kfree(entry);
1921         }
1922 
1923         return 0;
1924 }
1925 
1926 /*
1927  * All 4 location monitors reside at the same base - this is therefore a
1928  * system wide configuration.
1929  *
1930  * This does not enable the LM monitor - that should be done when the first
1931  * callback is attached and disabled when the last callback is removed.
1932  */
1933 static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
1934         u32 aspace, u32 cycle)
1935 {
1936         u32 lm_base_high, lm_base_low, lm_ctl = 0;
1937         int i;
1938         struct vme_bridge *tsi148_bridge;
1939         struct tsi148_driver *bridge;
1940 
1941         tsi148_bridge = lm->parent;
1942 
1943         bridge = tsi148_bridge->driver_priv;
1944 
1945         mutex_lock(&lm->mtx);
1946 
1947         /* If we already have a callback attached, we can't move it! */
1948         for (i = 0; i < lm->monitors; i++) {
1949                 if (bridge->lm_callback[i] != NULL) {
1950                         mutex_unlock(&lm->mtx);
1951                         dev_err(tsi148_bridge->parent, "Location monitor "
1952                                 "callback attached, can't reset\n");
1953                         return -EBUSY;
1954                 }
1955         }
1956 
1957         switch (aspace) {
1958         case VME_A16:
1959                 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
1960                 break;
1961         case VME_A24:
1962                 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
1963                 break;
1964         case VME_A32:
1965                 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
1966                 break;
1967         case VME_A64:
1968                 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
1969                 break;
1970         default:
1971                 mutex_unlock(&lm->mtx);
1972                 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1973                 return -EINVAL;
1974                 break;
1975         }
1976 
1977         if (cycle & VME_SUPER)
1978                 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
1979         if (cycle & VME_USER)
1980                 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
1981         if (cycle & VME_PROG)
1982                 lm_ctl |= TSI148_LCSR_LMAT_PGM;
1983         if (cycle & VME_DATA)
1984                 lm_ctl |= TSI148_LCSR_LMAT_DATA;
1985 
1986         reg_split(lm_base, &lm_base_high, &lm_base_low);
1987 
1988         iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
1989         iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
1990         iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
1991 
1992         mutex_unlock(&lm->mtx);
1993 
1994         return 0;
1995 }
1996 
1997 /* Get configuration of the callback monitor and return whether it is enabled
1998  * or disabled.
1999  */
2000 static int tsi148_lm_get(struct vme_lm_resource *lm,
2001         unsigned long long *lm_base, u32 *aspace, u32 *cycle)
2002 {
2003         u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
2004         struct tsi148_driver *bridge;
2005 
2006         bridge = lm->parent->driver_priv;
2007 
2008         mutex_lock(&lm->mtx);
2009 
2010         lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
2011         lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
2012         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2013 
2014         reg_join(lm_base_high, lm_base_low, lm_base);
2015 
2016         if (lm_ctl & TSI148_LCSR_LMAT_EN)
2017                 enabled = 1;
2018 
2019         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
2020                 *aspace |= VME_A16;
2021 
2022         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
2023                 *aspace |= VME_A24;
2024 
2025         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
2026                 *aspace |= VME_A32;
2027 
2028         if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
2029                 *aspace |= VME_A64;
2030 
2031 
2032         if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
2033                 *cycle |= VME_SUPER;
2034         if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
2035                 *cycle |= VME_USER;
2036         if (lm_ctl & TSI148_LCSR_LMAT_PGM)
2037                 *cycle |= VME_PROG;
2038         if (lm_ctl & TSI148_LCSR_LMAT_DATA)
2039                 *cycle |= VME_DATA;
2040 
2041         mutex_unlock(&lm->mtx);
2042 
2043         return enabled;
2044 }
2045 
2046 /*
2047  * Attach a callback to a specific location monitor.
2048  *
2049  * Callback will be passed the monitor triggered.
2050  */
2051 static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2052         void (*callback)(void *), void *data)
2053 {
2054         u32 lm_ctl, tmp;
2055         struct vme_bridge *tsi148_bridge;
2056         struct tsi148_driver *bridge;
2057 
2058         tsi148_bridge = lm->parent;
2059 
2060         bridge = tsi148_bridge->driver_priv;
2061 
2062         mutex_lock(&lm->mtx);
2063 
2064         /* Ensure that the location monitor is configured - need PGM or DATA */
2065         lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2066         if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2067                 mutex_unlock(&lm->mtx);
2068                 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2069                         "configured\n");
2070                 return -EINVAL;
2071         }
2072 
2073         /* Check that a callback isn't already attached */
2074         if (bridge->lm_callback[monitor] != NULL) {
2075                 mutex_unlock(&lm->mtx);
2076                 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2077                 return -EBUSY;
2078         }
2079 
2080         /* Attach callback */
2081         bridge->lm_callback[monitor] = callback;
2082         bridge->lm_data[monitor] = data;
2083 
2084         /* Enable Location Monitor interrupt */
2085         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2086         tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2087         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2088 
2089         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2090         tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2091         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2092 
2093         /* Ensure that global Location Monitor Enable set */
2094         if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2095                 lm_ctl |= TSI148_LCSR_LMAT_EN;
2096                 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2097         }
2098 
2099         mutex_unlock(&lm->mtx);
2100 
2101         return 0;
2102 }
2103 
2104 /*
2105  * Detach a callback function forn a specific location monitor.
2106  */
2107 static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2108 {
2109         u32 lm_en, tmp;
2110         struct tsi148_driver *bridge;
2111 
2112         bridge = lm->parent->driver_priv;
2113 
2114         mutex_lock(&lm->mtx);
2115 
2116         /* Disable Location Monitor and ensure previous interrupts are clear */
2117         lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2118         lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2119         iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2120 
2121         tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2122         tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2123         iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2124 
2125         iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2126                  bridge->base + TSI148_LCSR_INTC);
2127 
2128         /* Detach callback */
2129         bridge->lm_callback[monitor] = NULL;
2130         bridge->lm_data[monitor] = NULL;
2131 
2132         /* If all location monitors disabled, disable global Location Monitor */
2133         if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2134                         TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2135                 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2136                 tmp &= ~TSI148_LCSR_LMAT_EN;
2137                 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2138         }
2139 
2140         mutex_unlock(&lm->mtx);
2141 
2142         return 0;
2143 }
2144 
2145 /*
2146  * Determine Geographical Addressing
2147  */
2148 static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2149 {
2150         u32 slot = 0;
2151         struct tsi148_driver *bridge;
2152 
2153         bridge = tsi148_bridge->driver_priv;
2154 
2155         if (!geoid) {
2156                 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2157                 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2158         } else
2159                 slot = geoid;
2160 
2161         return (int)slot;
2162 }
2163 
2164 static void *tsi148_alloc_consistent(struct device *parent, size_t size,
2165         dma_addr_t *dma)
2166 {
2167         struct pci_dev *pdev;
2168 
2169         /* Find pci_dev container of dev */
2170         pdev = to_pci_dev(parent);
2171 
2172         return pci_alloc_consistent(pdev, size, dma);
2173 }
2174 
2175 static void tsi148_free_consistent(struct device *parent, size_t size,
2176         void *vaddr, dma_addr_t dma)
2177 {
2178         struct pci_dev *pdev;
2179 
2180         /* Find pci_dev container of dev */
2181         pdev = to_pci_dev(parent);
2182 
2183         pci_free_consistent(pdev, size, vaddr, dma);
2184 }
2185 
2186 /*
2187  * Configure CR/CSR space
2188  *
2189  * Access to the CR/CSR can be configured at power-up. The location of the
2190  * CR/CSR registers in the CR/CSR address space is determined by the boards
2191  * Auto-ID or Geographic address. This function ensures that the window is
2192  * enabled at an offset consistent with the boards geopgraphic address.
2193  *
2194  * Each board has a 512kB window, with the highest 4kB being used for the
2195  * boards registers, this means there is a fix length 508kB window which must
2196  * be mapped onto PCI memory.
2197  */
2198 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2199         struct pci_dev *pdev)
2200 {
2201         u32 cbar, crat, vstat;
2202         u32 crcsr_bus_high, crcsr_bus_low;
2203         int retval;
2204         struct tsi148_driver *bridge;
2205 
2206         bridge = tsi148_bridge->driver_priv;
2207 
2208         /* Allocate mem for CR/CSR image */
2209         bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2210                                                      &bridge->crcsr_bus);
2211         if (bridge->crcsr_kernel == NULL) {
2212                 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2213                         "CR/CSR image\n");
2214                 return -ENOMEM;
2215         }
2216 
2217         reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2218 
2219         iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2220         iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2221 
2222         /* Ensure that the CR/CSR is configured at the correct offset */
2223         cbar = ioread32be(bridge->base + TSI148_CBAR);
2224         cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2225 
2226         vstat = tsi148_slot_get(tsi148_bridge);
2227 
2228         if (cbar != vstat) {
2229                 cbar = vstat;
2230                 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2231                 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2232         }
2233         dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2234 
2235         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2236         if (crat & TSI148_LCSR_CRAT_EN)
2237                 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2238         else {
2239                 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2240                 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2241                         bridge->base + TSI148_LCSR_CRAT);
2242         }
2243 
2244         /* If we want flushed, error-checked writes, set up a window
2245          * over the CR/CSR registers. We read from here to safely flush
2246          * through VME writes.
2247          */
2248         if (err_chk) {
2249                 retval = tsi148_master_set(bridge->flush_image, 1,
2250                         (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2251                         VME_D16);
2252                 if (retval)
2253                         dev_err(tsi148_bridge->parent, "Configuring flush image"
2254                                 " failed\n");
2255         }
2256 
2257         return 0;
2258 
2259 }
2260 
2261 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2262         struct pci_dev *pdev)
2263 {
2264         u32 crat;
2265         struct tsi148_driver *bridge;
2266 
2267         bridge = tsi148_bridge->driver_priv;
2268 
2269         /* Turn off CR/CSR space */
2270         crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2271         iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2272                 bridge->base + TSI148_LCSR_CRAT);
2273 
2274         /* Free image */
2275         iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2276         iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2277 
2278         pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2279                 bridge->crcsr_bus);
2280 }
2281 
2282 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2283 {
2284         int retval, i, master_num;
2285         u32 data;
2286         struct list_head *pos = NULL, *n;
2287         struct vme_bridge *tsi148_bridge;
2288         struct tsi148_driver *tsi148_device;
2289         struct vme_master_resource *master_image;
2290         struct vme_slave_resource *slave_image;
2291         struct vme_dma_resource *dma_ctrlr;
2292         struct vme_lm_resource *lm;
2293 
2294         /* If we want to support more than one of each bridge, we need to
2295          * dynamically generate this so we get one per device
2296          */
2297         tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
2298         if (tsi148_bridge == NULL) {
2299                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2300                         "structure\n");
2301                 retval = -ENOMEM;
2302                 goto err_struct;
2303         }
2304         vme_init_bridge(tsi148_bridge);
2305 
2306         tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
2307         if (tsi148_device == NULL) {
2308                 dev_err(&pdev->dev, "Failed to allocate memory for device "
2309                         "structure\n");
2310                 retval = -ENOMEM;
2311                 goto err_driver;
2312         }
2313 
2314         tsi148_bridge->driver_priv = tsi148_device;
2315 
2316         /* Enable the device */
2317         retval = pci_enable_device(pdev);
2318         if (retval) {
2319                 dev_err(&pdev->dev, "Unable to enable device\n");
2320                 goto err_enable;
2321         }
2322 
2323         /* Map Registers */
2324         retval = pci_request_regions(pdev, driver_name);
2325         if (retval) {
2326                 dev_err(&pdev->dev, "Unable to reserve resources\n");
2327                 goto err_resource;
2328         }
2329 
2330         /* map registers in BAR 0 */
2331         tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2332                 4096);
2333         if (!tsi148_device->base) {
2334                 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2335                 retval = -EIO;
2336                 goto err_remap;
2337         }
2338 
2339         /* Check to see if the mapping worked out */
2340         data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2341         if (data != PCI_VENDOR_ID_TUNDRA) {
2342                 dev_err(&pdev->dev, "CRG region check failed\n");
2343                 retval = -EIO;
2344                 goto err_test;
2345         }
2346 
2347         /* Initialize wait queues & mutual exclusion flags */
2348         init_waitqueue_head(&tsi148_device->dma_queue[0]);
2349         init_waitqueue_head(&tsi148_device->dma_queue[1]);
2350         init_waitqueue_head(&tsi148_device->iack_queue);
2351         mutex_init(&tsi148_device->vme_int);
2352         mutex_init(&tsi148_device->vme_rmw);
2353 
2354         tsi148_bridge->parent = &pdev->dev;
2355         strcpy(tsi148_bridge->name, driver_name);
2356 
2357         /* Setup IRQ */
2358         retval = tsi148_irq_init(tsi148_bridge);
2359         if (retval != 0) {
2360                 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2361                 goto err_irq;
2362         }
2363 
2364         /* If we are going to flush writes, we need to read from the VME bus.
2365          * We need to do this safely, thus we read the devices own CR/CSR
2366          * register. To do this we must set up a window in CR/CSR space and
2367          * hence have one less master window resource available.
2368          */
2369         master_num = TSI148_MAX_MASTER;
2370         if (err_chk) {
2371                 master_num--;
2372 
2373                 tsi148_device->flush_image =
2374                         kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
2375                 if (tsi148_device->flush_image == NULL) {
2376                         dev_err(&pdev->dev, "Failed to allocate memory for "
2377                         "flush resource structure\n");
2378                         retval = -ENOMEM;
2379                         goto err_master;
2380                 }
2381                 tsi148_device->flush_image->parent = tsi148_bridge;
2382                 spin_lock_init(&tsi148_device->flush_image->lock);
2383                 tsi148_device->flush_image->locked = 1;
2384                 tsi148_device->flush_image->number = master_num;
2385                 memset(&tsi148_device->flush_image->bus_resource, 0,
2386                         sizeof(struct resource));
2387                 tsi148_device->flush_image->kern_base  = NULL;
2388         }
2389 
2390         /* Add master windows to list */
2391         for (i = 0; i < master_num; i++) {
2392                 master_image = kmalloc(sizeof(struct vme_master_resource),
2393                         GFP_KERNEL);
2394                 if (master_image == NULL) {
2395                         dev_err(&pdev->dev, "Failed to allocate memory for "
2396                         "master resource structure\n");
2397                         retval = -ENOMEM;
2398                         goto err_master;
2399                 }
2400                 master_image->parent = tsi148_bridge;
2401                 spin_lock_init(&master_image->lock);
2402                 master_image->locked = 0;
2403                 master_image->number = i;
2404                 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2405                         VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2406                         VME_USER3 | VME_USER4;
2407                 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2408                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2409                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2410                         VME_PROG | VME_DATA;
2411                 master_image->width_attr = VME_D16 | VME_D32;
2412                 memset(&master_image->bus_resource, 0,
2413                         sizeof(struct resource));
2414                 master_image->kern_base  = NULL;
2415                 list_add_tail(&master_image->list,
2416                         &tsi148_bridge->master_resources);
2417         }
2418 
2419         /* Add slave windows to list */
2420         for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2421                 slave_image = kmalloc(sizeof(struct vme_slave_resource),
2422                         GFP_KERNEL);
2423                 if (slave_image == NULL) {
2424                         dev_err(&pdev->dev, "Failed to allocate memory for "
2425                         "slave resource structure\n");
2426                         retval = -ENOMEM;
2427                         goto err_slave;
2428                 }
2429                 slave_image->parent = tsi148_bridge;
2430                 mutex_init(&slave_image->mtx);
2431                 slave_image->locked = 0;
2432                 slave_image->number = i;
2433                 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2434                         VME_A64;
2435                 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2436                         VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2437                         VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2438                         VME_PROG | VME_DATA;
2439                 list_add_tail(&slave_image->list,
2440                         &tsi148_bridge->slave_resources);
2441         }
2442 
2443         /* Add dma engines to list */
2444         for (i = 0; i < TSI148_MAX_DMA; i++) {
2445                 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
2446                         GFP_KERNEL);
2447                 if (dma_ctrlr == NULL) {
2448                         dev_err(&pdev->dev, "Failed to allocate memory for "
2449                         "dma resource structure\n");
2450                         retval = -ENOMEM;
2451                         goto err_dma;
2452                 }
2453                 dma_ctrlr->parent = tsi148_bridge;
2454                 mutex_init(&dma_ctrlr->mtx);
2455                 dma_ctrlr->locked = 0;
2456                 dma_ctrlr->number = i;
2457                 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2458                         VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2459                         VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2460                         VME_DMA_PATTERN_TO_MEM;
2461                 INIT_LIST_HEAD(&dma_ctrlr->pending);
2462                 INIT_LIST_HEAD(&dma_ctrlr->running);
2463                 list_add_tail(&dma_ctrlr->list,
2464                         &tsi148_bridge->dma_resources);
2465         }
2466 
2467         /* Add location monitor to list */
2468         lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
2469         if (lm == NULL) {
2470                 dev_err(&pdev->dev, "Failed to allocate memory for "
2471                 "location monitor resource structure\n");
2472                 retval = -ENOMEM;
2473                 goto err_lm;
2474         }
2475         lm->parent = tsi148_bridge;
2476         mutex_init(&lm->mtx);
2477         lm->locked = 0;
2478         lm->number = 1;
2479         lm->monitors = 4;
2480         list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2481 
2482         tsi148_bridge->slave_get = tsi148_slave_get;
2483         tsi148_bridge->slave_set = tsi148_slave_set;
2484         tsi148_bridge->master_get = tsi148_master_get;
2485         tsi148_bridge->master_set = tsi148_master_set;
2486         tsi148_bridge->master_read = tsi148_master_read;
2487         tsi148_bridge->master_write = tsi148_master_write;
2488         tsi148_bridge->master_rmw = tsi148_master_rmw;
2489         tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2490         tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2491         tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2492         tsi148_bridge->irq_set = tsi148_irq_set;
2493         tsi148_bridge->irq_generate = tsi148_irq_generate;
2494         tsi148_bridge->lm_set = tsi148_lm_set;
2495         tsi148_bridge->lm_get = tsi148_lm_get;
2496         tsi148_bridge->lm_attach = tsi148_lm_attach;
2497         tsi148_bridge->lm_detach = tsi148_lm_detach;
2498         tsi148_bridge->slot_get = tsi148_slot_get;
2499         tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
2500         tsi148_bridge->free_consistent = tsi148_free_consistent;
2501 
2502         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2503         dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2504                 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2505         if (!geoid)
2506                 dev_info(&pdev->dev, "VME geographical address is %d\n",
2507                         data & TSI148_LCSR_VSTAT_GA_M);
2508         else
2509                 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2510                         geoid);
2511 
2512         dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2513                 err_chk ? "enabled" : "disabled");
2514 
2515         retval = tsi148_crcsr_init(tsi148_bridge, pdev);
2516         if (retval) {
2517                 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2518                 goto err_crcsr;
2519         }
2520 
2521         retval = vme_register_bridge(tsi148_bridge);
2522         if (retval != 0) {
2523                 dev_err(&pdev->dev, "Chip Registration failed.\n");
2524                 goto err_reg;
2525         }
2526 
2527         pci_set_drvdata(pdev, tsi148_bridge);
2528 
2529         /* Clear VME bus "board fail", and "power-up reset" lines */
2530         data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2531         data &= ~TSI148_LCSR_VSTAT_BRDFL;
2532         data |= TSI148_LCSR_VSTAT_CPURST;
2533         iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2534 
2535         return 0;
2536 
2537 err_reg:
2538         tsi148_crcsr_exit(tsi148_bridge, pdev);
2539 err_crcsr:
2540 err_lm:
2541         /* resources are stored in link list */
2542         list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) {
2543                 lm = list_entry(pos, struct vme_lm_resource, list);
2544                 list_del(pos);
2545                 kfree(lm);
2546         }
2547 err_dma:
2548         /* resources are stored in link list */
2549         list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) {
2550                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2551                 list_del(pos);
2552                 kfree(dma_ctrlr);
2553         }
2554 err_slave:
2555         /* resources are stored in link list */
2556         list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) {
2557                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2558                 list_del(pos);
2559                 kfree(slave_image);
2560         }
2561 err_master:
2562         /* resources are stored in link list */
2563         list_for_each_safe(pos, n, &tsi148_bridge->master_resources) {
2564                 master_image = list_entry(pos, struct vme_master_resource,
2565                         list);
2566                 list_del(pos);
2567                 kfree(master_image);
2568         }
2569 
2570         tsi148_irq_exit(tsi148_bridge, pdev);
2571 err_irq:
2572 err_test:
2573         iounmap(tsi148_device->base);
2574 err_remap:
2575         pci_release_regions(pdev);
2576 err_resource:
2577         pci_disable_device(pdev);
2578 err_enable:
2579         kfree(tsi148_device);
2580 err_driver:
2581         kfree(tsi148_bridge);
2582 err_struct:
2583         return retval;
2584 
2585 }
2586 
2587 static void tsi148_remove(struct pci_dev *pdev)
2588 {
2589         struct list_head *pos = NULL;
2590         struct list_head *tmplist;
2591         struct vme_master_resource *master_image;
2592         struct vme_slave_resource *slave_image;
2593         struct vme_dma_resource *dma_ctrlr;
2594         int i;
2595         struct tsi148_driver *bridge;
2596         struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2597 
2598         bridge = tsi148_bridge->driver_priv;
2599 
2600 
2601         dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2602 
2603         /*
2604          *  Shutdown all inbound and outbound windows.
2605          */
2606         for (i = 0; i < 8; i++) {
2607                 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2608                         TSI148_LCSR_OFFSET_ITAT);
2609                 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2610                         TSI148_LCSR_OFFSET_OTAT);
2611         }
2612 
2613         /*
2614          *  Shutdown Location monitor.
2615          */
2616         iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2617 
2618         /*
2619          *  Shutdown CRG map.
2620          */
2621         iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2622 
2623         /*
2624          *  Clear error status.
2625          */
2626         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2627         iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2628         iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2629 
2630         /*
2631          *  Remove VIRQ interrupt (if any)
2632          */
2633         if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2634                 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2635 
2636         /*
2637          *  Map all Interrupts to PCI INTA
2638          */
2639         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2640         iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2641 
2642         tsi148_irq_exit(tsi148_bridge, pdev);
2643 
2644         vme_unregister_bridge(tsi148_bridge);
2645 
2646         tsi148_crcsr_exit(tsi148_bridge, pdev);
2647 
2648         /* resources are stored in link list */
2649         list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) {
2650                 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2651                 list_del(pos);
2652                 kfree(dma_ctrlr);
2653         }
2654 
2655         /* resources are stored in link list */
2656         list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) {
2657                 slave_image = list_entry(pos, struct vme_slave_resource, list);
2658                 list_del(pos);
2659                 kfree(slave_image);
2660         }
2661 
2662         /* resources are stored in link list */
2663         list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) {
2664                 master_image = list_entry(pos, struct vme_master_resource,
2665                         list);
2666                 list_del(pos);
2667                 kfree(master_image);
2668         }
2669 
2670         iounmap(bridge->base);
2671 
2672         pci_release_regions(pdev);
2673 
2674         pci_disable_device(pdev);
2675 
2676         kfree(tsi148_bridge->driver_priv);
2677 
2678         kfree(tsi148_bridge);
2679 }
2680 
2681 module_pci_driver(tsi148_driver);
2682 
2683 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2684 module_param(err_chk, bool, 0);
2685 
2686 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2687 module_param(geoid, int, 0);
2688 
2689 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2690 MODULE_LICENSE("GPL");
2691 

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