2 * Support for the Tundra TSI148 VME-PCI Bridge Chip
4 * Author: Martyn Welch <martyn.welch@ge.com>
5 * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
7 * Based on work by Tom Armistead and Ajit Prem
8 * Copyright 2004 Motorola Inc.
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.
16 #include <linux/module.h>
17 #include <linux/moduleparam.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>
31 #include <linux/uaccess.h>
32 #include <linux/byteorder/generic.h>
33 #include <linux/vme.h>
35 #include "../vme_bridge.h"
36 #include "vme_tsi148.h"
38 static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
39 static void tsi148_remove(struct pci_dev *);
42 /* Module parameter */
46 static const char driver_name[] = "vme_tsi148";
48 static const struct pci_device_id tsi148_ids[] = {
49 { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
53 static struct pci_driver tsi148_driver = {
55 .id_table = tsi148_ids,
56 .probe = tsi148_probe,
57 .remove = tsi148_remove,
60 static void reg_join(unsigned int high, unsigned int low,
61 unsigned long long *variable)
63 *variable = (unsigned long long)high << 32;
64 *variable |= (unsigned long long)low;
67 static void reg_split(unsigned long long variable, unsigned int *high,
70 *low = (unsigned int)variable & 0xFFFFFFFF;
71 *high = (unsigned int)(variable >> 32);
77 static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
82 if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
83 wake_up(&bridge->dma_queue[0]);
84 serviced |= TSI148_LCSR_INTC_DMA0C;
86 if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
87 wake_up(&bridge->dma_queue[1]);
88 serviced |= TSI148_LCSR_INTC_DMA1C;
95 * Wake up location monitor queue
97 static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
102 for (i = 0; i < 4; i++) {
103 if (stat & TSI148_LCSR_INTS_LMS[i]) {
104 /* We only enable interrupts if the callback is set */
105 bridge->lm_callback[i](i);
106 serviced |= TSI148_LCSR_INTC_LMC[i];
114 * Wake up mail box queue.
116 * XXX This functionality is not exposed up though API.
118 static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
123 struct tsi148_driver *bridge;
125 bridge = tsi148_bridge->driver_priv;
127 for (i = 0; i < 4; i++) {
128 if (stat & TSI148_LCSR_INTS_MBS[i]) {
129 val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
130 dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
132 serviced |= TSI148_LCSR_INTC_MBC[i];
140 * Display error & status message when PERR (PCI) exception interrupt occurs.
142 static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
144 struct tsi148_driver *bridge;
146 bridge = tsi148_bridge->driver_priv;
148 dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
149 "attributes: %08x\n",
150 ioread32be(bridge->base + TSI148_LCSR_EDPAU),
151 ioread32be(bridge->base + TSI148_LCSR_EDPAL),
152 ioread32be(bridge->base + TSI148_LCSR_EDPAT));
154 dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
155 "completion reg: %08x\n",
156 ioread32be(bridge->base + TSI148_LCSR_EDPXA),
157 ioread32be(bridge->base + TSI148_LCSR_EDPXS));
159 iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
161 return TSI148_LCSR_INTC_PERRC;
165 * Save address and status when VME error interrupt occurs.
167 static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
169 unsigned int error_addr_high, error_addr_low;
170 unsigned long long error_addr;
172 struct vme_bus_error *error = NULL;
173 struct tsi148_driver *bridge;
175 bridge = tsi148_bridge->driver_priv;
177 error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
178 error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
179 error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
181 reg_join(error_addr_high, error_addr_low, &error_addr);
183 /* Check for exception register overflow (we have lost error data) */
184 if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
185 dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
190 error = kmalloc(sizeof(struct vme_bus_error), GFP_ATOMIC);
192 error->address = error_addr;
193 error->attributes = error_attrib;
194 list_add_tail(&error->list, &tsi148_bridge->vme_errors);
196 dev_err(tsi148_bridge->parent,
197 "Unable to alloc memory for VMEbus Error reporting\n");
202 dev_err(tsi148_bridge->parent,
203 "VME Bus Error at address: 0x%llx, attributes: %08x\n",
204 error_addr, error_attrib);
208 iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
210 return TSI148_LCSR_INTC_VERRC;
214 * Wake up IACK queue.
216 static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
218 wake_up(&bridge->iack_queue);
220 return TSI148_LCSR_INTC_IACKC;
224 * Calling VME bus interrupt callback if provided.
226 static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
229 int vec, i, serviced = 0;
230 struct tsi148_driver *bridge;
232 bridge = tsi148_bridge->driver_priv;
234 for (i = 7; i > 0; i--) {
235 if (stat & (1 << i)) {
237 * Note: Even though the registers are defined as
238 * 32-bits in the spec, we only want to issue 8-bit
239 * IACK cycles on the bus, read from offset 3.
241 vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
243 vme_irq_handler(tsi148_bridge, i, vec);
245 serviced |= (1 << i);
253 * Top level interrupt handler. Clears appropriate interrupt status bits and
254 * then calls appropriate sub handler(s).
256 static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
258 u32 stat, enable, serviced = 0;
259 struct vme_bridge *tsi148_bridge;
260 struct tsi148_driver *bridge;
264 bridge = tsi148_bridge->driver_priv;
266 /* Determine which interrupts are unmasked and set */
267 enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
268 stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
270 /* Only look at unmasked interrupts */
276 /* Call subhandlers as appropriate */
278 if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
279 serviced |= tsi148_DMA_irqhandler(bridge, stat);
281 /* Location monitor irqs */
282 if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
283 TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
284 serviced |= tsi148_LM_irqhandler(bridge, stat);
287 if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
288 TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
289 serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
292 if (stat & TSI148_LCSR_INTS_PERRS)
293 serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
296 if (stat & TSI148_LCSR_INTS_VERRS)
297 serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
300 if (stat & TSI148_LCSR_INTS_IACKS)
301 serviced |= tsi148_IACK_irqhandler(bridge);
304 if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
305 TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
306 TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
307 TSI148_LCSR_INTS_IRQ1S))
308 serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
310 /* Clear serviced interrupts */
311 iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
316 static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
320 struct pci_dev *pdev;
321 struct tsi148_driver *bridge;
323 pdev = to_pci_dev(tsi148_bridge->parent);
325 bridge = tsi148_bridge->driver_priv;
327 /* Initialise list for VME bus errors */
328 INIT_LIST_HEAD(&tsi148_bridge->vme_errors);
330 mutex_init(&tsi148_bridge->irq_mtx);
332 result = request_irq(pdev->irq,
335 driver_name, tsi148_bridge);
337 dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
338 "vector %02X\n", pdev->irq);
342 /* Enable and unmask interrupts */
343 tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
344 TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
345 TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
346 TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
347 TSI148_LCSR_INTEO_IACKEO;
349 /* This leaves the following interrupts masked.
350 * TSI148_LCSR_INTEO_VIEEO
351 * TSI148_LCSR_INTEO_SYSFLEO
352 * TSI148_LCSR_INTEO_ACFLEO
355 /* Don't enable Location Monitor interrupts here - they will be
356 * enabled when the location monitors are properly configured and
357 * a callback has been attached.
358 * TSI148_LCSR_INTEO_LM0EO
359 * TSI148_LCSR_INTEO_LM1EO
360 * TSI148_LCSR_INTEO_LM2EO
361 * TSI148_LCSR_INTEO_LM3EO
364 /* Don't enable VME interrupts until we add a handler, else the board
365 * will respond to it and we don't want that unless it knows how to
366 * properly deal with it.
367 * TSI148_LCSR_INTEO_IRQ7EO
368 * TSI148_LCSR_INTEO_IRQ6EO
369 * TSI148_LCSR_INTEO_IRQ5EO
370 * TSI148_LCSR_INTEO_IRQ4EO
371 * TSI148_LCSR_INTEO_IRQ3EO
372 * TSI148_LCSR_INTEO_IRQ2EO
373 * TSI148_LCSR_INTEO_IRQ1EO
376 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
377 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
382 static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
383 struct pci_dev *pdev)
385 struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
387 /* Turn off interrupts */
388 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
389 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
391 /* Clear all interrupts */
392 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
394 /* Detach interrupt handler */
395 free_irq(pdev->irq, tsi148_bridge);
399 * Check to see if an IACk has been received, return true (1) or false (0).
401 static int tsi148_iack_received(struct tsi148_driver *bridge)
405 tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
407 if (tmp & TSI148_LCSR_VICR_IRQS)
414 * Configure VME interrupt
416 static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
419 struct pci_dev *pdev;
421 struct tsi148_driver *bridge;
423 bridge = tsi148_bridge->driver_priv;
425 /* We need to do the ordering differently for enabling and disabling */
427 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
428 tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
429 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
431 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
432 tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
433 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
436 pdev = to_pci_dev(tsi148_bridge->parent);
437 synchronize_irq(pdev->irq);
440 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
441 tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
442 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
444 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
445 tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
446 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
451 * Generate a VME bus interrupt at the requested level & vector. Wait for
452 * interrupt to be acked.
454 static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
458 struct tsi148_driver *bridge;
460 bridge = tsi148_bridge->driver_priv;
462 mutex_lock(&bridge->vme_int);
464 /* Read VICR register */
465 tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
468 tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
469 (statid & TSI148_LCSR_VICR_STID_M);
470 iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
472 /* Assert VMEbus IRQ */
473 tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
474 iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
476 /* XXX Consider implementing a timeout? */
477 wait_event_interruptible(bridge->iack_queue,
478 tsi148_iack_received(bridge));
480 mutex_unlock(&bridge->vme_int);
486 * Find the first error in this address range
488 static struct vme_bus_error *tsi148_find_error(struct vme_bridge *tsi148_bridge,
489 u32 aspace, unsigned long long address, size_t count)
491 struct list_head *err_pos;
492 struct vme_bus_error *vme_err, *valid = NULL;
493 unsigned long long bound;
495 bound = address + count;
498 * XXX We are currently not looking at the address space when parsing
499 * for errors. This is because parsing the Address Modifier Codes
500 * is going to be quite resource intensive to do properly. We
501 * should be OK just looking at the addresses and this is certainly
502 * much better than what we had before.
505 /* Iterate through errors */
506 list_for_each(err_pos, &tsi148_bridge->vme_errors) {
507 vme_err = list_entry(err_pos, struct vme_bus_error, list);
508 if ((vme_err->address >= address) &&
509 (vme_err->address < bound)) {
520 * Clear errors in the provided address range.
522 static void tsi148_clear_errors(struct vme_bridge *tsi148_bridge,
523 u32 aspace, unsigned long long address, size_t count)
525 struct list_head *err_pos, *temp;
526 struct vme_bus_error *vme_err;
527 unsigned long long bound;
529 bound = address + count;
532 * XXX We are currently not looking at the address space when parsing
533 * for errors. This is because parsing the Address Modifier Codes
534 * is going to be quite resource intensive to do properly. We
535 * should be OK just looking at the addresses and this is certainly
536 * much better than what we had before.
539 /* Iterate through errors */
540 list_for_each_safe(err_pos, temp, &tsi148_bridge->vme_errors) {
541 vme_err = list_entry(err_pos, struct vme_bus_error, list);
543 if ((vme_err->address >= address) &&
544 (vme_err->address < bound)) {
553 * Initialize a slave window with the requested attributes.
555 static int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
556 unsigned long long vme_base, unsigned long long size,
557 dma_addr_t pci_base, u32 aspace, u32 cycle)
559 unsigned int i, addr = 0, granularity = 0;
560 unsigned int temp_ctl = 0;
561 unsigned int vme_base_low, vme_base_high;
562 unsigned int vme_bound_low, vme_bound_high;
563 unsigned int pci_offset_low, pci_offset_high;
564 unsigned long long vme_bound, pci_offset;
565 struct vme_bridge *tsi148_bridge;
566 struct tsi148_driver *bridge;
568 tsi148_bridge = image->parent;
569 bridge = tsi148_bridge->driver_priv;
576 addr |= TSI148_LCSR_ITAT_AS_A16;
579 granularity = 0x1000;
580 addr |= TSI148_LCSR_ITAT_AS_A24;
583 granularity = 0x10000;
584 addr |= TSI148_LCSR_ITAT_AS_A32;
587 granularity = 0x10000;
588 addr |= TSI148_LCSR_ITAT_AS_A64;
596 dev_err(tsi148_bridge->parent, "Invalid address space\n");
601 /* Convert 64-bit variables to 2x 32-bit variables */
602 reg_split(vme_base, &vme_base_high, &vme_base_low);
605 * Bound address is a valid address for the window, adjust
608 vme_bound = vme_base + size - granularity;
609 reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
610 pci_offset = (unsigned long long)pci_base - vme_base;
611 reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
613 if (vme_base_low & (granularity - 1)) {
614 dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
617 if (vme_bound_low & (granularity - 1)) {
618 dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
621 if (pci_offset_low & (granularity - 1)) {
622 dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
627 /* Disable while we are mucking around */
628 temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
629 TSI148_LCSR_OFFSET_ITAT);
630 temp_ctl &= ~TSI148_LCSR_ITAT_EN;
631 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
632 TSI148_LCSR_OFFSET_ITAT);
635 iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
636 TSI148_LCSR_OFFSET_ITSAU);
637 iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
638 TSI148_LCSR_OFFSET_ITSAL);
639 iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
640 TSI148_LCSR_OFFSET_ITEAU);
641 iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
642 TSI148_LCSR_OFFSET_ITEAL);
643 iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
644 TSI148_LCSR_OFFSET_ITOFU);
645 iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
646 TSI148_LCSR_OFFSET_ITOFL);
648 /* Setup 2eSST speeds */
649 temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
650 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
652 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
655 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
658 temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
662 /* Setup cycle types */
663 temp_ctl &= ~(0x1F << 7);
665 temp_ctl |= TSI148_LCSR_ITAT_BLT;
666 if (cycle & VME_MBLT)
667 temp_ctl |= TSI148_LCSR_ITAT_MBLT;
668 if (cycle & VME_2eVME)
669 temp_ctl |= TSI148_LCSR_ITAT_2eVME;
670 if (cycle & VME_2eSST)
671 temp_ctl |= TSI148_LCSR_ITAT_2eSST;
672 if (cycle & VME_2eSSTB)
673 temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
675 /* Setup address space */
676 temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
680 if (cycle & VME_SUPER)
681 temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
682 if (cycle & VME_USER)
683 temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
684 if (cycle & VME_PROG)
685 temp_ctl |= TSI148_LCSR_ITAT_PGM;
686 if (cycle & VME_DATA)
687 temp_ctl |= TSI148_LCSR_ITAT_DATA;
689 /* Write ctl reg without enable */
690 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
691 TSI148_LCSR_OFFSET_ITAT);
694 temp_ctl |= TSI148_LCSR_ITAT_EN;
696 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
697 TSI148_LCSR_OFFSET_ITAT);
703 * Get slave window configuration.
705 static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
706 unsigned long long *vme_base, unsigned long long *size,
707 dma_addr_t *pci_base, u32 *aspace, u32 *cycle)
709 unsigned int i, granularity = 0, ctl = 0;
710 unsigned int vme_base_low, vme_base_high;
711 unsigned int vme_bound_low, vme_bound_high;
712 unsigned int pci_offset_low, pci_offset_high;
713 unsigned long long vme_bound, pci_offset;
714 struct tsi148_driver *bridge;
716 bridge = image->parent->driver_priv;
721 ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
722 TSI148_LCSR_OFFSET_ITAT);
724 vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
725 TSI148_LCSR_OFFSET_ITSAU);
726 vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
727 TSI148_LCSR_OFFSET_ITSAL);
728 vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
729 TSI148_LCSR_OFFSET_ITEAU);
730 vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
731 TSI148_LCSR_OFFSET_ITEAL);
732 pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
733 TSI148_LCSR_OFFSET_ITOFU);
734 pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
735 TSI148_LCSR_OFFSET_ITOFL);
737 /* Convert 64-bit variables to 2x 32-bit variables */
738 reg_join(vme_base_high, vme_base_low, vme_base);
739 reg_join(vme_bound_high, vme_bound_low, &vme_bound);
740 reg_join(pci_offset_high, pci_offset_low, &pci_offset);
742 *pci_base = (dma_addr_t)(*vme_base + pci_offset);
748 if (ctl & TSI148_LCSR_ITAT_EN)
751 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
755 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
756 granularity = 0x1000;
759 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
760 granularity = 0x10000;
763 if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
764 granularity = 0x10000;
768 /* Need granularity before we set the size */
769 *size = (unsigned long long)((vme_bound - *vme_base) + granularity);
772 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
773 *cycle |= VME_2eSST160;
774 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
775 *cycle |= VME_2eSST267;
776 if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
777 *cycle |= VME_2eSST320;
779 if (ctl & TSI148_LCSR_ITAT_BLT)
781 if (ctl & TSI148_LCSR_ITAT_MBLT)
783 if (ctl & TSI148_LCSR_ITAT_2eVME)
785 if (ctl & TSI148_LCSR_ITAT_2eSST)
787 if (ctl & TSI148_LCSR_ITAT_2eSSTB)
788 *cycle |= VME_2eSSTB;
790 if (ctl & TSI148_LCSR_ITAT_SUPR)
792 if (ctl & TSI148_LCSR_ITAT_NPRIV)
794 if (ctl & TSI148_LCSR_ITAT_PGM)
796 if (ctl & TSI148_LCSR_ITAT_DATA)
803 * Allocate and map PCI Resource
805 static int tsi148_alloc_resource(struct vme_master_resource *image,
806 unsigned long long size)
808 unsigned long long existing_size;
810 struct pci_dev *pdev;
811 struct vme_bridge *tsi148_bridge;
813 tsi148_bridge = image->parent;
815 pdev = to_pci_dev(tsi148_bridge->parent);
817 existing_size = (unsigned long long)(image->bus_resource.end -
818 image->bus_resource.start);
820 /* If the existing size is OK, return */
821 if ((size != 0) && (existing_size == (size - 1)))
824 if (existing_size != 0) {
825 iounmap(image->kern_base);
826 image->kern_base = NULL;
827 kfree(image->bus_resource.name);
828 release_resource(&image->bus_resource);
829 memset(&image->bus_resource, 0, sizeof(struct resource));
832 /* Exit here if size is zero */
836 if (image->bus_resource.name == NULL) {
837 image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
838 if (image->bus_resource.name == NULL) {
839 dev_err(tsi148_bridge->parent, "Unable to allocate "
840 "memory for resource name\n");
846 sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
849 image->bus_resource.start = 0;
850 image->bus_resource.end = (unsigned long)size;
851 image->bus_resource.flags = IORESOURCE_MEM;
853 retval = pci_bus_alloc_resource(pdev->bus,
854 &image->bus_resource, size, size, PCIBIOS_MIN_MEM,
857 dev_err(tsi148_bridge->parent, "Failed to allocate mem "
858 "resource for window %d size 0x%lx start 0x%lx\n",
859 image->number, (unsigned long)size,
860 (unsigned long)image->bus_resource.start);
864 image->kern_base = ioremap_nocache(
865 image->bus_resource.start, size);
866 if (image->kern_base == NULL) {
867 dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
875 release_resource(&image->bus_resource);
877 kfree(image->bus_resource.name);
878 memset(&image->bus_resource, 0, sizeof(struct resource));
884 * Free and unmap PCI Resource
886 static void tsi148_free_resource(struct vme_master_resource *image)
888 iounmap(image->kern_base);
889 image->kern_base = NULL;
890 release_resource(&image->bus_resource);
891 kfree(image->bus_resource.name);
892 memset(&image->bus_resource, 0, sizeof(struct resource));
896 * Set the attributes of an outbound window.
898 static int tsi148_master_set(struct vme_master_resource *image, int enabled,
899 unsigned long long vme_base, unsigned long long size, u32 aspace,
900 u32 cycle, u32 dwidth)
904 unsigned int temp_ctl = 0;
905 unsigned int pci_base_low, pci_base_high;
906 unsigned int pci_bound_low, pci_bound_high;
907 unsigned int vme_offset_low, vme_offset_high;
908 unsigned long long pci_bound, vme_offset, pci_base;
909 struct vme_bridge *tsi148_bridge;
910 struct tsi148_driver *bridge;
911 struct pci_bus_region region;
912 struct pci_dev *pdev;
914 tsi148_bridge = image->parent;
916 bridge = tsi148_bridge->driver_priv;
918 pdev = to_pci_dev(tsi148_bridge->parent);
920 /* Verify input data */
921 if (vme_base & 0xFFFF) {
922 dev_err(tsi148_bridge->parent, "Invalid VME Window "
928 if ((size == 0) && (enabled != 0)) {
929 dev_err(tsi148_bridge->parent, "Size must be non-zero for "
930 "enabled windows\n");
935 spin_lock(&image->lock);
937 /* Let's allocate the resource here rather than further up the stack as
938 * it avoids pushing loads of bus dependent stuff up the stack. If size
939 * is zero, any existing resource will be freed.
941 retval = tsi148_alloc_resource(image, size);
943 spin_unlock(&image->lock);
944 dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
954 pcibios_resource_to_bus(pdev->bus, ®ion,
955 &image->bus_resource);
956 pci_base = region.start;
959 * Bound address is a valid address for the window, adjust
960 * according to window granularity.
962 pci_bound = pci_base + (size - 0x10000);
963 vme_offset = vme_base - pci_base;
966 /* Convert 64-bit variables to 2x 32-bit variables */
967 reg_split(pci_base, &pci_base_high, &pci_base_low);
968 reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
969 reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
971 if (pci_base_low & 0xFFFF) {
972 spin_unlock(&image->lock);
973 dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
977 if (pci_bound_low & 0xFFFF) {
978 spin_unlock(&image->lock);
979 dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
983 if (vme_offset_low & 0xFFFF) {
984 spin_unlock(&image->lock);
985 dev_err(tsi148_bridge->parent, "Invalid VME Offset "
993 /* Disable while we are mucking around */
994 temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
995 TSI148_LCSR_OFFSET_OTAT);
996 temp_ctl &= ~TSI148_LCSR_OTAT_EN;
997 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
998 TSI148_LCSR_OFFSET_OTAT);
1000 /* Setup 2eSST speeds */
1001 temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
1002 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1004 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
1007 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
1010 temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
1014 /* Setup cycle types */
1015 if (cycle & VME_BLT) {
1016 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1017 temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
1019 if (cycle & VME_MBLT) {
1020 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1021 temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
1023 if (cycle & VME_2eVME) {
1024 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1025 temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
1027 if (cycle & VME_2eSST) {
1028 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1029 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
1031 if (cycle & VME_2eSSTB) {
1032 dev_warn(tsi148_bridge->parent, "Currently not setting "
1033 "Broadcast Select Registers\n");
1034 temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
1035 temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
1038 /* Setup data width */
1039 temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
1042 temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
1045 temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
1048 spin_unlock(&image->lock);
1049 dev_err(tsi148_bridge->parent, "Invalid data width\n");
1054 /* Setup address space */
1055 temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
1058 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
1061 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
1064 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
1067 temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
1070 temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
1073 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
1076 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
1079 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
1082 temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
1085 spin_unlock(&image->lock);
1086 dev_err(tsi148_bridge->parent, "Invalid address space\n");
1092 temp_ctl &= ~(3<<4);
1093 if (cycle & VME_SUPER)
1094 temp_ctl |= TSI148_LCSR_OTAT_SUP;
1095 if (cycle & VME_PROG)
1096 temp_ctl |= TSI148_LCSR_OTAT_PGM;
1099 iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] +
1100 TSI148_LCSR_OFFSET_OTSAU);
1101 iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
1102 TSI148_LCSR_OFFSET_OTSAL);
1103 iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
1104 TSI148_LCSR_OFFSET_OTEAU);
1105 iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
1106 TSI148_LCSR_OFFSET_OTEAL);
1107 iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
1108 TSI148_LCSR_OFFSET_OTOFU);
1109 iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
1110 TSI148_LCSR_OFFSET_OTOFL);
1112 /* Write ctl reg without enable */
1113 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1114 TSI148_LCSR_OFFSET_OTAT);
1117 temp_ctl |= TSI148_LCSR_OTAT_EN;
1119 iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
1120 TSI148_LCSR_OFFSET_OTAT);
1122 spin_unlock(&image->lock);
1128 tsi148_free_resource(image);
1136 * Set the attributes of an outbound window.
1138 * XXX Not parsing prefetch information.
1140 static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
1141 unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1142 u32 *cycle, u32 *dwidth)
1144 unsigned int i, ctl;
1145 unsigned int pci_base_low, pci_base_high;
1146 unsigned int pci_bound_low, pci_bound_high;
1147 unsigned int vme_offset_low, vme_offset_high;
1149 unsigned long long pci_base, pci_bound, vme_offset;
1150 struct tsi148_driver *bridge;
1152 bridge = image->parent->driver_priv;
1156 ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1157 TSI148_LCSR_OFFSET_OTAT);
1159 pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1160 TSI148_LCSR_OFFSET_OTSAU);
1161 pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1162 TSI148_LCSR_OFFSET_OTSAL);
1163 pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1164 TSI148_LCSR_OFFSET_OTEAU);
1165 pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1166 TSI148_LCSR_OFFSET_OTEAL);
1167 vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1168 TSI148_LCSR_OFFSET_OTOFU);
1169 vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1170 TSI148_LCSR_OFFSET_OTOFL);
1172 /* Convert 64-bit variables to 2x 32-bit variables */
1173 reg_join(pci_base_high, pci_base_low, &pci_base);
1174 reg_join(pci_bound_high, pci_bound_low, &pci_bound);
1175 reg_join(vme_offset_high, vme_offset_low, &vme_offset);
1177 *vme_base = pci_base + vme_offset;
1178 *size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
1185 if (ctl & TSI148_LCSR_OTAT_EN)
1188 /* Setup address space */
1189 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
1191 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
1193 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
1195 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
1197 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
1198 *aspace |= VME_CRCSR;
1199 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
1200 *aspace |= VME_USER1;
1201 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
1202 *aspace |= VME_USER2;
1203 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
1204 *aspace |= VME_USER3;
1205 if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
1206 *aspace |= VME_USER4;
1208 /* Setup 2eSST speeds */
1209 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
1210 *cycle |= VME_2eSST160;
1211 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
1212 *cycle |= VME_2eSST267;
1213 if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
1214 *cycle |= VME_2eSST320;
1216 /* Setup cycle types */
1217 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT)
1219 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT)
1221 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT)
1223 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME)
1224 *cycle |= VME_2eVME;
1225 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST)
1226 *cycle |= VME_2eSST;
1227 if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB)
1228 *cycle |= VME_2eSSTB;
1230 if (ctl & TSI148_LCSR_OTAT_SUP)
1231 *cycle |= VME_SUPER;
1235 if (ctl & TSI148_LCSR_OTAT_PGM)
1240 /* Setup data width */
1241 if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
1243 if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
1250 static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
1251 unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
1252 u32 *cycle, u32 *dwidth)
1256 spin_lock(&image->lock);
1258 retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
1261 spin_unlock(&image->lock);
1266 static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
1267 size_t count, loff_t offset)
1269 int retval, enabled;
1270 unsigned long long vme_base, size;
1271 u32 aspace, cycle, dwidth;
1272 struct vme_bus_error *vme_err = NULL;
1273 struct vme_bridge *tsi148_bridge;
1274 void __iomem *addr = image->kern_base + offset;
1275 unsigned int done = 0;
1276 unsigned int count32;
1278 tsi148_bridge = image->parent;
1280 spin_lock(&image->lock);
1282 /* The following code handles VME address alignment. We cannot use
1283 * memcpy_xxx here because it may cut data transfers in to 8-bit
1284 * cycles when D16 or D32 cycles are required on the VME bus.
1285 * On the other hand, the bridge itself assures that the maximum data
1286 * cycle configured for the transfer is used and splits it
1287 * automatically for non-aligned addresses, so we don't want the
1288 * overhead of needlessly forcing small transfers for the entire cycle.
1290 if ((uintptr_t)addr & 0x1) {
1291 *(u8 *)buf = ioread8(addr);
1296 if ((uintptr_t)(addr + done) & 0x2) {
1297 if ((count - done) < 2) {
1298 *(u8 *)(buf + done) = ioread8(addr + done);
1302 *(u16 *)(buf + done) = ioread16(addr + done);
1307 count32 = (count - done) & ~0x3;
1308 while (done < count32) {
1309 *(u32 *)(buf + done) = ioread32(addr + done);
1313 if ((count - done) & 0x2) {
1314 *(u16 *)(buf + done) = ioread16(addr + done);
1317 if ((count - done) & 0x1) {
1318 *(u8 *)(buf + done) = ioread8(addr + done);
1328 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1331 vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1333 if (vme_err != NULL) {
1334 dev_err(image->parent->parent, "First VME read error detected "
1335 "an at address 0x%llx\n", vme_err->address);
1336 retval = vme_err->address - (vme_base + offset);
1337 /* Clear down save errors in this address range */
1338 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1343 spin_unlock(&image->lock);
1349 static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
1350 size_t count, loff_t offset)
1352 int retval = 0, enabled;
1353 unsigned long long vme_base, size;
1354 u32 aspace, cycle, dwidth;
1355 void __iomem *addr = image->kern_base + offset;
1356 unsigned int done = 0;
1357 unsigned int count32;
1359 struct vme_bus_error *vme_err = NULL;
1360 struct vme_bridge *tsi148_bridge;
1361 struct tsi148_driver *bridge;
1363 tsi148_bridge = image->parent;
1365 bridge = tsi148_bridge->driver_priv;
1367 spin_lock(&image->lock);
1369 /* Here we apply for the same strategy we do in master_read
1370 * function in order to assure the correct cycles.
1372 if ((uintptr_t)addr & 0x1) {
1373 iowrite8(*(u8 *)buf, addr);
1378 if ((uintptr_t)(addr + done) & 0x2) {
1379 if ((count - done) < 2) {
1380 iowrite8(*(u8 *)(buf + done), addr + done);
1384 iowrite16(*(u16 *)(buf + done), addr + done);
1389 count32 = (count - done) & ~0x3;
1390 while (done < count32) {
1391 iowrite32(*(u32 *)(buf + done), addr + done);
1395 if ((count - done) & 0x2) {
1396 iowrite16(*(u16 *)(buf + done), addr + done);
1399 if ((count - done) & 0x1) {
1400 iowrite8(*(u8 *)(buf + done), addr + done);
1408 * Writes are posted. We need to do a read on the VME bus to flush out
1409 * all of the writes before we check for errors. We can't guarantee
1410 * that reading the data we have just written is safe. It is believed
1411 * that there isn't any read, write re-ordering, so we can read any
1412 * location in VME space, so lets read the Device ID from the tsi148's
1413 * own registers as mapped into CR/CSR space.
1415 * We check for saved errors in the written address range/space.
1422 * Get window info first, to maximise the time that the buffers may
1423 * fluch on their own
1425 __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
1428 ioread16(bridge->flush_image->kern_base + 0x7F000);
1430 vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
1432 if (vme_err != NULL) {
1433 dev_warn(tsi148_bridge->parent, "First VME write error detected"
1434 " an at address 0x%llx\n", vme_err->address);
1435 retval = vme_err->address - (vme_base + offset);
1436 /* Clear down save errors in this address range */
1437 tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset,
1442 spin_unlock(&image->lock);
1448 * Perform an RMW cycle on the VME bus.
1450 * Requires a previously configured master window, returns final value.
1452 static unsigned int tsi148_master_rmw(struct vme_master_resource *image,
1453 unsigned int mask, unsigned int compare, unsigned int swap,
1456 unsigned long long pci_addr;
1457 unsigned int pci_addr_high, pci_addr_low;
1460 struct tsi148_driver *bridge;
1462 bridge = image->parent->driver_priv;
1464 /* Find the PCI address that maps to the desired VME address */
1467 /* Locking as we can only do one of these at a time */
1468 mutex_lock(&bridge->vme_rmw);
1471 spin_lock(&image->lock);
1473 pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1474 TSI148_LCSR_OFFSET_OTSAU);
1475 pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
1476 TSI148_LCSR_OFFSET_OTSAL);
1478 reg_join(pci_addr_high, pci_addr_low, &pci_addr);
1479 reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
1481 /* Configure registers */
1482 iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN);
1483 iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
1484 iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
1485 iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
1486 iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
1489 tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1490 tmp |= TSI148_LCSR_VMCTRL_RMWEN;
1491 iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1493 /* Kick process off with a read to the required address. */
1494 result = ioread32be(image->kern_base + offset);
1497 tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
1498 tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
1499 iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
1501 spin_unlock(&image->lock);
1503 mutex_unlock(&bridge->vme_rmw);
1508 static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
1509 u32 aspace, u32 cycle, u32 dwidth)
1513 val = be32_to_cpu(*attr);
1515 /* Setup 2eSST speeds */
1516 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1518 val |= TSI148_LCSR_DSAT_2eSSTM_160;
1521 val |= TSI148_LCSR_DSAT_2eSSTM_267;
1524 val |= TSI148_LCSR_DSAT_2eSSTM_320;
1528 /* Setup cycle types */
1529 if (cycle & VME_SCT)
1530 val |= TSI148_LCSR_DSAT_TM_SCT;
1532 if (cycle & VME_BLT)
1533 val |= TSI148_LCSR_DSAT_TM_BLT;
1535 if (cycle & VME_MBLT)
1536 val |= TSI148_LCSR_DSAT_TM_MBLT;
1538 if (cycle & VME_2eVME)
1539 val |= TSI148_LCSR_DSAT_TM_2eVME;
1541 if (cycle & VME_2eSST)
1542 val |= TSI148_LCSR_DSAT_TM_2eSST;
1544 if (cycle & VME_2eSSTB) {
1545 dev_err(dev, "Currently not setting Broadcast Select "
1547 val |= TSI148_LCSR_DSAT_TM_2eSSTB;
1550 /* Setup data width */
1553 val |= TSI148_LCSR_DSAT_DBW_16;
1556 val |= TSI148_LCSR_DSAT_DBW_32;
1559 dev_err(dev, "Invalid data width\n");
1563 /* Setup address space */
1566 val |= TSI148_LCSR_DSAT_AMODE_A16;
1569 val |= TSI148_LCSR_DSAT_AMODE_A24;
1572 val |= TSI148_LCSR_DSAT_AMODE_A32;
1575 val |= TSI148_LCSR_DSAT_AMODE_A64;
1578 val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
1581 val |= TSI148_LCSR_DSAT_AMODE_USER1;
1584 val |= TSI148_LCSR_DSAT_AMODE_USER2;
1587 val |= TSI148_LCSR_DSAT_AMODE_USER3;
1590 val |= TSI148_LCSR_DSAT_AMODE_USER4;
1593 dev_err(dev, "Invalid address space\n");
1598 if (cycle & VME_SUPER)
1599 val |= TSI148_LCSR_DSAT_SUP;
1600 if (cycle & VME_PROG)
1601 val |= TSI148_LCSR_DSAT_PGM;
1603 *attr = cpu_to_be32(val);
1608 static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
1609 u32 aspace, u32 cycle, u32 dwidth)
1613 val = be32_to_cpu(*attr);
1615 /* Setup 2eSST speeds */
1616 switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
1618 val |= TSI148_LCSR_DDAT_2eSSTM_160;
1621 val |= TSI148_LCSR_DDAT_2eSSTM_267;
1624 val |= TSI148_LCSR_DDAT_2eSSTM_320;
1628 /* Setup cycle types */
1629 if (cycle & VME_SCT)
1630 val |= TSI148_LCSR_DDAT_TM_SCT;
1632 if (cycle & VME_BLT)
1633 val |= TSI148_LCSR_DDAT_TM_BLT;
1635 if (cycle & VME_MBLT)
1636 val |= TSI148_LCSR_DDAT_TM_MBLT;
1638 if (cycle & VME_2eVME)
1639 val |= TSI148_LCSR_DDAT_TM_2eVME;
1641 if (cycle & VME_2eSST)
1642 val |= TSI148_LCSR_DDAT_TM_2eSST;
1644 if (cycle & VME_2eSSTB) {
1645 dev_err(dev, "Currently not setting Broadcast Select "
1647 val |= TSI148_LCSR_DDAT_TM_2eSSTB;
1650 /* Setup data width */
1653 val |= TSI148_LCSR_DDAT_DBW_16;
1656 val |= TSI148_LCSR_DDAT_DBW_32;
1659 dev_err(dev, "Invalid data width\n");
1663 /* Setup address space */
1666 val |= TSI148_LCSR_DDAT_AMODE_A16;
1669 val |= TSI148_LCSR_DDAT_AMODE_A24;
1672 val |= TSI148_LCSR_DDAT_AMODE_A32;
1675 val |= TSI148_LCSR_DDAT_AMODE_A64;
1678 val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
1681 val |= TSI148_LCSR_DDAT_AMODE_USER1;
1684 val |= TSI148_LCSR_DDAT_AMODE_USER2;
1687 val |= TSI148_LCSR_DDAT_AMODE_USER3;
1690 val |= TSI148_LCSR_DDAT_AMODE_USER4;
1693 dev_err(dev, "Invalid address space\n");
1698 if (cycle & VME_SUPER)
1699 val |= TSI148_LCSR_DDAT_SUP;
1700 if (cycle & VME_PROG)
1701 val |= TSI148_LCSR_DDAT_PGM;
1703 *attr = cpu_to_be32(val);
1709 * Add a link list descriptor to the list
1711 * Note: DMA engine expects the DMA descriptor to be big endian.
1713 static int tsi148_dma_list_add(struct vme_dma_list *list,
1714 struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count)
1716 struct tsi148_dma_entry *entry, *prev;
1717 u32 address_high, address_low, val;
1718 struct vme_dma_pattern *pattern_attr;
1719 struct vme_dma_pci *pci_attr;
1720 struct vme_dma_vme *vme_attr;
1722 struct vme_bridge *tsi148_bridge;
1724 tsi148_bridge = list->parent->parent;
1726 /* Descriptor must be aligned on 64-bit boundaries */
1727 entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
1728 if (entry == NULL) {
1729 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
1730 "dma resource structure\n");
1735 /* Test descriptor alignment */
1736 if ((unsigned long)&entry->descriptor & 0x7) {
1737 dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 "
1738 "byte boundary as required: %p\n",
1739 &entry->descriptor);
1744 /* Given we are going to fill out the structure, we probably don't
1745 * need to zero it, but better safe than sorry for now.
1747 memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
1749 /* Fill out source part */
1750 switch (src->type) {
1751 case VME_DMA_PATTERN:
1752 pattern_attr = src->private;
1754 entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
1756 val = TSI148_LCSR_DSAT_TYP_PAT;
1758 /* Default behaviour is 32 bit pattern */
1759 if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
1760 val |= TSI148_LCSR_DSAT_PSZ;
1762 /* It seems that the default behaviour is to increment */
1763 if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
1764 val |= TSI148_LCSR_DSAT_NIN;
1765 entry->descriptor.dsat = cpu_to_be32(val);
1768 pci_attr = src->private;
1770 reg_split((unsigned long long)pci_attr->address, &address_high,
1772 entry->descriptor.dsau = cpu_to_be32(address_high);
1773 entry->descriptor.dsal = cpu_to_be32(address_low);
1774 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
1777 vme_attr = src->private;
1779 reg_split((unsigned long long)vme_attr->address, &address_high,
1781 entry->descriptor.dsau = cpu_to_be32(address_high);
1782 entry->descriptor.dsal = cpu_to_be32(address_low);
1783 entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
1785 retval = tsi148_dma_set_vme_src_attributes(
1786 tsi148_bridge->parent, &entry->descriptor.dsat,
1787 vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1792 dev_err(tsi148_bridge->parent, "Invalid source type\n");
1798 /* Assume last link - this will be over-written by adding another */
1799 entry->descriptor.dnlau = cpu_to_be32(0);
1800 entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
1802 /* Fill out destination part */
1803 switch (dest->type) {
1805 pci_attr = dest->private;
1807 reg_split((unsigned long long)pci_attr->address, &address_high,
1809 entry->descriptor.ddau = cpu_to_be32(address_high);
1810 entry->descriptor.ddal = cpu_to_be32(address_low);
1811 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
1814 vme_attr = dest->private;
1816 reg_split((unsigned long long)vme_attr->address, &address_high,
1818 entry->descriptor.ddau = cpu_to_be32(address_high);
1819 entry->descriptor.ddal = cpu_to_be32(address_low);
1820 entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
1822 retval = tsi148_dma_set_vme_dest_attributes(
1823 tsi148_bridge->parent, &entry->descriptor.ddat,
1824 vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
1829 dev_err(tsi148_bridge->parent, "Invalid destination type\n");
1835 /* Fill out count */
1836 entry->descriptor.dcnt = cpu_to_be32((u32)count);
1839 list_add_tail(&entry->list, &list->entries);
1841 /* Fill out previous descriptors "Next Address" */
1842 if (entry->list.prev != &list->entries) {
1843 prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
1845 /* We need the bus address for the pointer */
1846 entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1848 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1850 reg_split((unsigned long long)entry->dma_handle, &address_high,
1852 entry->descriptor.dnlau = cpu_to_be32(address_high);
1853 entry->descriptor.dnlal = cpu_to_be32(address_low);
1868 * Check to see if the provided DMA channel is busy.
1870 static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel)
1873 struct tsi148_driver *bridge;
1875 bridge = tsi148_bridge->driver_priv;
1877 tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1878 TSI148_LCSR_OFFSET_DSTA);
1880 if (tmp & TSI148_LCSR_DSTA_BSY)
1888 * Execute a previously generated link list
1890 * XXX Need to provide control register configuration.
1892 static int tsi148_dma_list_exec(struct vme_dma_list *list)
1894 struct vme_dma_resource *ctrlr;
1895 int channel, retval = 0;
1896 struct tsi148_dma_entry *entry;
1897 u32 bus_addr_high, bus_addr_low;
1898 u32 val, dctlreg = 0;
1899 struct vme_bridge *tsi148_bridge;
1900 struct tsi148_driver *bridge;
1902 ctrlr = list->parent;
1904 tsi148_bridge = ctrlr->parent;
1906 bridge = tsi148_bridge->driver_priv;
1908 mutex_lock(&ctrlr->mtx);
1910 channel = ctrlr->number;
1912 if (!list_empty(&ctrlr->running)) {
1914 * XXX We have an active DMA transfer and currently haven't
1915 * sorted out the mechanism for "pending" DMA transfers.
1918 /* Need to add to pending here */
1919 mutex_unlock(&ctrlr->mtx);
1922 list_add(&list->list, &ctrlr->running);
1925 /* Get first bus address and write into registers */
1926 entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
1929 entry->dma_handle = dma_map_single(tsi148_bridge->parent,
1931 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1933 mutex_unlock(&ctrlr->mtx);
1935 reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
1937 iowrite32be(bus_addr_high, bridge->base +
1938 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
1939 iowrite32be(bus_addr_low, bridge->base +
1940 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
1942 dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1943 TSI148_LCSR_OFFSET_DCTL);
1945 /* Start the operation */
1946 iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
1947 TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
1949 wait_event_interruptible(bridge->dma_queue[channel],
1950 tsi148_dma_busy(ctrlr->parent, channel));
1953 * Read status register, this register is valid until we kick off a
1956 val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
1957 TSI148_LCSR_OFFSET_DSTA);
1959 if (val & TSI148_LCSR_DSTA_VBE) {
1960 dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
1964 /* Remove list from running list */
1965 mutex_lock(&ctrlr->mtx);
1966 list_del(&list->list);
1967 mutex_unlock(&ctrlr->mtx);
1973 * Clean up a previously generated link list
1975 * We have a separate function, don't assume that the chain can't be reused.
1977 static int tsi148_dma_list_empty(struct vme_dma_list *list)
1979 struct list_head *pos, *temp;
1980 struct tsi148_dma_entry *entry;
1982 struct vme_bridge *tsi148_bridge = list->parent->parent;
1984 /* detach and free each entry */
1985 list_for_each_safe(pos, temp, &list->entries) {
1987 entry = list_entry(pos, struct tsi148_dma_entry, list);
1989 dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
1990 sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
1998 * All 4 location monitors reside at the same base - this is therefore a
1999 * system wide configuration.
2001 * This does not enable the LM monitor - that should be done when the first
2002 * callback is attached and disabled when the last callback is removed.
2004 static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
2005 u32 aspace, u32 cycle)
2007 u32 lm_base_high, lm_base_low, lm_ctl = 0;
2009 struct vme_bridge *tsi148_bridge;
2010 struct tsi148_driver *bridge;
2012 tsi148_bridge = lm->parent;
2014 bridge = tsi148_bridge->driver_priv;
2016 mutex_lock(&lm->mtx);
2018 /* If we already have a callback attached, we can't move it! */
2019 for (i = 0; i < lm->monitors; i++) {
2020 if (bridge->lm_callback[i] != NULL) {
2021 mutex_unlock(&lm->mtx);
2022 dev_err(tsi148_bridge->parent, "Location monitor "
2023 "callback attached, can't reset\n");
2030 lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
2033 lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
2036 lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
2039 lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
2042 mutex_unlock(&lm->mtx);
2043 dev_err(tsi148_bridge->parent, "Invalid address space\n");
2048 if (cycle & VME_SUPER)
2049 lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
2050 if (cycle & VME_USER)
2051 lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
2052 if (cycle & VME_PROG)
2053 lm_ctl |= TSI148_LCSR_LMAT_PGM;
2054 if (cycle & VME_DATA)
2055 lm_ctl |= TSI148_LCSR_LMAT_DATA;
2057 reg_split(lm_base, &lm_base_high, &lm_base_low);
2059 iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU);
2060 iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
2061 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2063 mutex_unlock(&lm->mtx);
2068 /* Get configuration of the callback monitor and return whether it is enabled
2071 static int tsi148_lm_get(struct vme_lm_resource *lm,
2072 unsigned long long *lm_base, u32 *aspace, u32 *cycle)
2074 u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
2075 struct tsi148_driver *bridge;
2077 bridge = lm->parent->driver_priv;
2079 mutex_lock(&lm->mtx);
2081 lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
2082 lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
2083 lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2085 reg_join(lm_base_high, lm_base_low, lm_base);
2087 if (lm_ctl & TSI148_LCSR_LMAT_EN)
2090 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16)
2093 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24)
2096 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32)
2099 if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64)
2103 if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
2104 *cycle |= VME_SUPER;
2105 if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
2107 if (lm_ctl & TSI148_LCSR_LMAT_PGM)
2109 if (lm_ctl & TSI148_LCSR_LMAT_DATA)
2112 mutex_unlock(&lm->mtx);
2118 * Attach a callback to a specific location monitor.
2120 * Callback will be passed the monitor triggered.
2122 static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
2123 void (*callback)(int))
2126 struct vme_bridge *tsi148_bridge;
2127 struct tsi148_driver *bridge;
2129 tsi148_bridge = lm->parent;
2131 bridge = tsi148_bridge->driver_priv;
2133 mutex_lock(&lm->mtx);
2135 /* Ensure that the location monitor is configured - need PGM or DATA */
2136 lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2137 if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
2138 mutex_unlock(&lm->mtx);
2139 dev_err(tsi148_bridge->parent, "Location monitor not properly "
2144 /* Check that a callback isn't already attached */
2145 if (bridge->lm_callback[monitor] != NULL) {
2146 mutex_unlock(&lm->mtx);
2147 dev_err(tsi148_bridge->parent, "Existing callback attached\n");
2151 /* Attach callback */
2152 bridge->lm_callback[monitor] = callback;
2154 /* Enable Location Monitor interrupt */
2155 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2156 tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
2157 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
2159 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2160 tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
2161 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2163 /* Ensure that global Location Monitor Enable set */
2164 if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
2165 lm_ctl |= TSI148_LCSR_LMAT_EN;
2166 iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT);
2169 mutex_unlock(&lm->mtx);
2175 * Detach a callback function forn a specific location monitor.
2177 static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
2180 struct tsi148_driver *bridge;
2182 bridge = lm->parent->driver_priv;
2184 mutex_lock(&lm->mtx);
2186 /* Disable Location Monitor and ensure previous interrupts are clear */
2187 lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
2188 lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
2189 iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
2191 tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
2192 tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
2193 iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
2195 iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
2196 bridge->base + TSI148_LCSR_INTC);
2198 /* Detach callback */
2199 bridge->lm_callback[monitor] = NULL;
2201 /* If all location monitors disabled, disable global Location Monitor */
2202 if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
2203 TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
2204 tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT);
2205 tmp &= ~TSI148_LCSR_LMAT_EN;
2206 iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
2209 mutex_unlock(&lm->mtx);
2215 * Determine Geographical Addressing
2217 static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
2220 struct tsi148_driver *bridge;
2222 bridge = tsi148_bridge->driver_priv;
2225 slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
2226 slot = slot & TSI148_LCSR_VSTAT_GA_M;
2233 static void *tsi148_alloc_consistent(struct device *parent, size_t size,
2236 struct pci_dev *pdev;
2238 /* Find pci_dev container of dev */
2239 pdev = to_pci_dev(parent);
2241 return pci_alloc_consistent(pdev, size, dma);
2244 static void tsi148_free_consistent(struct device *parent, size_t size,
2245 void *vaddr, dma_addr_t dma)
2247 struct pci_dev *pdev;
2249 /* Find pci_dev container of dev */
2250 pdev = to_pci_dev(parent);
2252 pci_free_consistent(pdev, size, vaddr, dma);
2256 * Configure CR/CSR space
2258 * Access to the CR/CSR can be configured at power-up. The location of the
2259 * CR/CSR registers in the CR/CSR address space is determined by the boards
2260 * Auto-ID or Geographic address. This function ensures that the window is
2261 * enabled at an offset consistent with the boards geopgraphic address.
2263 * Each board has a 512kB window, with the highest 4kB being used for the
2264 * boards registers, this means there is a fix length 508kB window which must
2265 * be mapped onto PCI memory.
2267 static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge,
2268 struct pci_dev *pdev)
2270 u32 cbar, crat, vstat;
2271 u32 crcsr_bus_high, crcsr_bus_low;
2273 struct tsi148_driver *bridge;
2275 bridge = tsi148_bridge->driver_priv;
2277 /* Allocate mem for CR/CSR image */
2278 bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
2279 &bridge->crcsr_bus);
2280 if (bridge->crcsr_kernel == NULL) {
2281 dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
2286 reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
2288 iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
2289 iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
2291 /* Ensure that the CR/CSR is configured at the correct offset */
2292 cbar = ioread32be(bridge->base + TSI148_CBAR);
2293 cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
2295 vstat = tsi148_slot_get(tsi148_bridge);
2297 if (cbar != vstat) {
2299 dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
2300 iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
2302 dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
2304 crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2305 if (crat & TSI148_LCSR_CRAT_EN)
2306 dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
2308 dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
2309 iowrite32be(crat | TSI148_LCSR_CRAT_EN,
2310 bridge->base + TSI148_LCSR_CRAT);
2313 /* If we want flushed, error-checked writes, set up a window
2314 * over the CR/CSR registers. We read from here to safely flush
2315 * through VME writes.
2318 retval = tsi148_master_set(bridge->flush_image, 1,
2319 (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
2322 dev_err(tsi148_bridge->parent, "Configuring flush image"
2330 static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
2331 struct pci_dev *pdev)
2334 struct tsi148_driver *bridge;
2336 bridge = tsi148_bridge->driver_priv;
2338 /* Turn off CR/CSR space */
2339 crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
2340 iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
2341 bridge->base + TSI148_LCSR_CRAT);
2344 iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
2345 iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
2347 pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
2351 static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2353 int retval, i, master_num;
2355 struct list_head *pos = NULL, *n;
2356 struct vme_bridge *tsi148_bridge;
2357 struct tsi148_driver *tsi148_device;
2358 struct vme_master_resource *master_image;
2359 struct vme_slave_resource *slave_image;
2360 struct vme_dma_resource *dma_ctrlr;
2361 struct vme_lm_resource *lm;
2363 /* If we want to support more than one of each bridge, we need to
2364 * dynamically generate this so we get one per device
2366 tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
2367 if (tsi148_bridge == NULL) {
2368 dev_err(&pdev->dev, "Failed to allocate memory for device "
2374 tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
2375 if (tsi148_device == NULL) {
2376 dev_err(&pdev->dev, "Failed to allocate memory for device "
2382 tsi148_bridge->driver_priv = tsi148_device;
2384 /* Enable the device */
2385 retval = pci_enable_device(pdev);
2387 dev_err(&pdev->dev, "Unable to enable device\n");
2392 retval = pci_request_regions(pdev, driver_name);
2394 dev_err(&pdev->dev, "Unable to reserve resources\n");
2398 /* map registers in BAR 0 */
2399 tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
2401 if (!tsi148_device->base) {
2402 dev_err(&pdev->dev, "Unable to remap CRG region\n");
2407 /* Check to see if the mapping worked out */
2408 data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF;
2409 if (data != PCI_VENDOR_ID_TUNDRA) {
2410 dev_err(&pdev->dev, "CRG region check failed\n");
2415 /* Initialize wait queues & mutual exclusion flags */
2416 init_waitqueue_head(&tsi148_device->dma_queue[0]);
2417 init_waitqueue_head(&tsi148_device->dma_queue[1]);
2418 init_waitqueue_head(&tsi148_device->iack_queue);
2419 mutex_init(&tsi148_device->vme_int);
2420 mutex_init(&tsi148_device->vme_rmw);
2422 tsi148_bridge->parent = &pdev->dev;
2423 strcpy(tsi148_bridge->name, driver_name);
2426 retval = tsi148_irq_init(tsi148_bridge);
2428 dev_err(&pdev->dev, "Chip Initialization failed.\n");
2432 /* If we are going to flush writes, we need to read from the VME bus.
2433 * We need to do this safely, thus we read the devices own CR/CSR
2434 * register. To do this we must set up a window in CR/CSR space and
2435 * hence have one less master window resource available.
2437 master_num = TSI148_MAX_MASTER;
2441 tsi148_device->flush_image =
2442 kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
2443 if (tsi148_device->flush_image == NULL) {
2444 dev_err(&pdev->dev, "Failed to allocate memory for "
2445 "flush resource structure\n");
2449 tsi148_device->flush_image->parent = tsi148_bridge;
2450 spin_lock_init(&tsi148_device->flush_image->lock);
2451 tsi148_device->flush_image->locked = 1;
2452 tsi148_device->flush_image->number = master_num;
2453 memset(&tsi148_device->flush_image->bus_resource, 0,
2454 sizeof(struct resource));
2455 tsi148_device->flush_image->kern_base = NULL;
2458 /* Add master windows to list */
2459 INIT_LIST_HEAD(&tsi148_bridge->master_resources);
2460 for (i = 0; i < master_num; i++) {
2461 master_image = kmalloc(sizeof(struct vme_master_resource),
2463 if (master_image == NULL) {
2464 dev_err(&pdev->dev, "Failed to allocate memory for "
2465 "master resource structure\n");
2469 master_image->parent = tsi148_bridge;
2470 spin_lock_init(&master_image->lock);
2471 master_image->locked = 0;
2472 master_image->number = i;
2473 master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2475 master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2476 VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2477 VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2478 VME_PROG | VME_DATA;
2479 master_image->width_attr = VME_D16 | VME_D32;
2480 memset(&master_image->bus_resource, 0,
2481 sizeof(struct resource));
2482 master_image->kern_base = NULL;
2483 list_add_tail(&master_image->list,
2484 &tsi148_bridge->master_resources);
2487 /* Add slave windows to list */
2488 INIT_LIST_HEAD(&tsi148_bridge->slave_resources);
2489 for (i = 0; i < TSI148_MAX_SLAVE; i++) {
2490 slave_image = kmalloc(sizeof(struct vme_slave_resource),
2492 if (slave_image == NULL) {
2493 dev_err(&pdev->dev, "Failed to allocate memory for "
2494 "slave resource structure\n");
2498 slave_image->parent = tsi148_bridge;
2499 mutex_init(&slave_image->mtx);
2500 slave_image->locked = 0;
2501 slave_image->number = i;
2502 slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
2503 VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
2504 VME_USER3 | VME_USER4;
2505 slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
2506 VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
2507 VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
2508 VME_PROG | VME_DATA;
2509 list_add_tail(&slave_image->list,
2510 &tsi148_bridge->slave_resources);
2513 /* Add dma engines to list */
2514 INIT_LIST_HEAD(&tsi148_bridge->dma_resources);
2515 for (i = 0; i < TSI148_MAX_DMA; i++) {
2516 dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
2518 if (dma_ctrlr == NULL) {
2519 dev_err(&pdev->dev, "Failed to allocate memory for "
2520 "dma resource structure\n");
2524 dma_ctrlr->parent = tsi148_bridge;
2525 mutex_init(&dma_ctrlr->mtx);
2526 dma_ctrlr->locked = 0;
2527 dma_ctrlr->number = i;
2528 dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
2529 VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
2530 VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
2531 VME_DMA_PATTERN_TO_MEM;
2532 INIT_LIST_HEAD(&dma_ctrlr->pending);
2533 INIT_LIST_HEAD(&dma_ctrlr->running);
2534 list_add_tail(&dma_ctrlr->list,
2535 &tsi148_bridge->dma_resources);
2538 /* Add location monitor to list */
2539 INIT_LIST_HEAD(&tsi148_bridge->lm_resources);
2540 lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
2542 dev_err(&pdev->dev, "Failed to allocate memory for "
2543 "location monitor resource structure\n");
2547 lm->parent = tsi148_bridge;
2548 mutex_init(&lm->mtx);
2552 list_add_tail(&lm->list, &tsi148_bridge->lm_resources);
2554 tsi148_bridge->slave_get = tsi148_slave_get;
2555 tsi148_bridge->slave_set = tsi148_slave_set;
2556 tsi148_bridge->master_get = tsi148_master_get;
2557 tsi148_bridge->master_set = tsi148_master_set;
2558 tsi148_bridge->master_read = tsi148_master_read;
2559 tsi148_bridge->master_write = tsi148_master_write;
2560 tsi148_bridge->master_rmw = tsi148_master_rmw;
2561 tsi148_bridge->dma_list_add = tsi148_dma_list_add;
2562 tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
2563 tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
2564 tsi148_bridge->irq_set = tsi148_irq_set;
2565 tsi148_bridge->irq_generate = tsi148_irq_generate;
2566 tsi148_bridge->lm_set = tsi148_lm_set;
2567 tsi148_bridge->lm_get = tsi148_lm_get;
2568 tsi148_bridge->lm_attach = tsi148_lm_attach;
2569 tsi148_bridge->lm_detach = tsi148_lm_detach;
2570 tsi148_bridge->slot_get = tsi148_slot_get;
2571 tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
2572 tsi148_bridge->free_consistent = tsi148_free_consistent;
2574 data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2575 dev_info(&pdev->dev, "Board is%s the VME system controller\n",
2576 (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
2578 dev_info(&pdev->dev, "VME geographical address is %d\n",
2579 data & TSI148_LCSR_VSTAT_GA_M);
2581 dev_info(&pdev->dev, "VME geographical address is set to %d\n",
2584 dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
2585 err_chk ? "enabled" : "disabled");
2587 retval = tsi148_crcsr_init(tsi148_bridge, pdev);
2589 dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
2593 retval = vme_register_bridge(tsi148_bridge);
2595 dev_err(&pdev->dev, "Chip Registration failed.\n");
2599 pci_set_drvdata(pdev, tsi148_bridge);
2601 /* Clear VME bus "board fail", and "power-up reset" lines */
2602 data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
2603 data &= ~TSI148_LCSR_VSTAT_BRDFL;
2604 data |= TSI148_LCSR_VSTAT_CPURST;
2605 iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
2610 tsi148_crcsr_exit(tsi148_bridge, pdev);
2613 /* resources are stored in link list */
2614 list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) {
2615 lm = list_entry(pos, struct vme_lm_resource, list);
2620 /* resources are stored in link list */
2621 list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) {
2622 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2627 /* resources are stored in link list */
2628 list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) {
2629 slave_image = list_entry(pos, struct vme_slave_resource, list);
2634 /* resources are stored in link list */
2635 list_for_each_safe(pos, n, &tsi148_bridge->master_resources) {
2636 master_image = list_entry(pos, struct vme_master_resource,
2639 kfree(master_image);
2642 tsi148_irq_exit(tsi148_bridge, pdev);
2645 iounmap(tsi148_device->base);
2647 pci_release_regions(pdev);
2649 pci_disable_device(pdev);
2651 kfree(tsi148_device);
2653 kfree(tsi148_bridge);
2659 static void tsi148_remove(struct pci_dev *pdev)
2661 struct list_head *pos = NULL;
2662 struct list_head *tmplist;
2663 struct vme_master_resource *master_image;
2664 struct vme_slave_resource *slave_image;
2665 struct vme_dma_resource *dma_ctrlr;
2667 struct tsi148_driver *bridge;
2668 struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
2670 bridge = tsi148_bridge->driver_priv;
2673 dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
2676 * Shutdown all inbound and outbound windows.
2678 for (i = 0; i < 8; i++) {
2679 iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
2680 TSI148_LCSR_OFFSET_ITAT);
2681 iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
2682 TSI148_LCSR_OFFSET_OTAT);
2686 * Shutdown Location monitor.
2688 iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
2693 iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
2696 * Clear error status.
2698 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
2699 iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
2700 iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
2703 * Remove VIRQ interrupt (if any)
2705 if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
2706 iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
2709 * Map all Interrupts to PCI INTA
2711 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
2712 iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
2714 tsi148_irq_exit(tsi148_bridge, pdev);
2716 vme_unregister_bridge(tsi148_bridge);
2718 tsi148_crcsr_exit(tsi148_bridge, pdev);
2720 /* resources are stored in link list */
2721 list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) {
2722 dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
2727 /* resources are stored in link list */
2728 list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) {
2729 slave_image = list_entry(pos, struct vme_slave_resource, list);
2734 /* resources are stored in link list */
2735 list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) {
2736 master_image = list_entry(pos, struct vme_master_resource,
2739 kfree(master_image);
2742 iounmap(bridge->base);
2744 pci_release_regions(pdev);
2746 pci_disable_device(pdev);
2748 kfree(tsi148_bridge->driver_priv);
2750 kfree(tsi148_bridge);
2753 module_pci_driver(tsi148_driver);
2755 MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
2756 module_param(err_chk, bool, 0);
2758 MODULE_PARM_DESC(geoid, "Override geographical addressing");
2759 module_param(geoid, int, 0);
2761 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2762 MODULE_LICENSE("GPL");