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 __init
tsi148_init(void);
39 static int tsi148_probe(struct pci_dev
*, const struct pci_device_id
*);
40 static void tsi148_remove(struct pci_dev
*);
41 static void __exit
tsi148_exit(void);
44 /* Module parameter */
48 static const char driver_name
[] = "vme_tsi148";
50 static DEFINE_PCI_DEVICE_TABLE(tsi148_ids
) = {
51 { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA
, PCI_DEVICE_ID_TUNDRA_TSI148
) },
55 static struct pci_driver tsi148_driver
= {
57 .id_table
= tsi148_ids
,
58 .probe
= tsi148_probe
,
59 .remove
= tsi148_remove
,
62 static void reg_join(unsigned int high
, unsigned int low
,
63 unsigned long long *variable
)
65 *variable
= (unsigned long long)high
<< 32;
66 *variable
|= (unsigned long long)low
;
69 static void reg_split(unsigned long long variable
, unsigned int *high
,
72 *low
= (unsigned int)variable
& 0xFFFFFFFF;
73 *high
= (unsigned int)(variable
>> 32);
79 static u32
tsi148_DMA_irqhandler(struct tsi148_driver
*bridge
,
84 if (channel_mask
& TSI148_LCSR_INTS_DMA0S
) {
85 wake_up(&bridge
->dma_queue
[0]);
86 serviced
|= TSI148_LCSR_INTC_DMA0C
;
88 if (channel_mask
& TSI148_LCSR_INTS_DMA1S
) {
89 wake_up(&bridge
->dma_queue
[1]);
90 serviced
|= TSI148_LCSR_INTC_DMA1C
;
97 * Wake up location monitor queue
99 static u32
tsi148_LM_irqhandler(struct tsi148_driver
*bridge
, u32 stat
)
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
](i
);
108 serviced
|= TSI148_LCSR_INTC_LMC
[i
];
116 * Wake up mail box queue.
118 * XXX This functionality is not exposed up though API.
120 static u32
tsi148_MB_irqhandler(struct vme_bridge
*tsi148_bridge
, u32 stat
)
125 struct tsi148_driver
*bridge
;
127 bridge
= tsi148_bridge
->driver_priv
;
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"
134 serviced
|= TSI148_LCSR_INTC_MBC
[i
];
142 * Display error & status message when PERR (PCI) exception interrupt occurs.
144 static u32
tsi148_PERR_irqhandler(struct vme_bridge
*tsi148_bridge
)
146 struct tsi148_driver
*bridge
;
148 bridge
= tsi148_bridge
->driver_priv
;
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
));
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
));
161 iowrite32be(TSI148_LCSR_EDPAT_EDPCL
, bridge
->base
+ TSI148_LCSR_EDPAT
);
163 return TSI148_LCSR_INTC_PERRC
;
167 * Save address and status when VME error interrupt occurs.
169 static u32
tsi148_VERR_irqhandler(struct vme_bridge
*tsi148_bridge
)
171 unsigned int error_addr_high
, error_addr_low
;
172 unsigned long long error_addr
;
174 struct vme_bus_error
*error
;
175 struct tsi148_driver
*bridge
;
177 bridge
= tsi148_bridge
->driver_priv
;
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
);
183 reg_join(error_addr_high
, error_addr_low
, &error_addr
);
185 /* Check for exception register overflow (we have lost error data) */
186 if (error_attrib
& TSI148_LCSR_VEAT_VEOF
) {
187 dev_err(tsi148_bridge
->parent
, "VME Bus Exception Overflow "
191 error
= kmalloc(sizeof(struct vme_bus_error
), GFP_ATOMIC
);
193 error
->address
= error_addr
;
194 error
->attributes
= error_attrib
;
195 list_add_tail(&error
->list
, &tsi148_bridge
->vme_errors
);
197 dev_err(tsi148_bridge
->parent
, "Unable to alloc memory for "
198 "VMEbus Error reporting\n");
199 dev_err(tsi148_bridge
->parent
, "VME Bus Error at address: "
200 "0x%llx, attributes: %08x\n", error_addr
, error_attrib
);
204 iowrite32be(TSI148_LCSR_VEAT_VESCL
, bridge
->base
+ TSI148_LCSR_VEAT
);
206 return TSI148_LCSR_INTC_VERRC
;
210 * Wake up IACK queue.
212 static u32
tsi148_IACK_irqhandler(struct tsi148_driver
*bridge
)
214 wake_up(&bridge
->iack_queue
);
216 return TSI148_LCSR_INTC_IACKC
;
220 * Calling VME bus interrupt callback if provided.
222 static u32
tsi148_VIRQ_irqhandler(struct vme_bridge
*tsi148_bridge
,
225 int vec
, i
, serviced
= 0;
226 struct tsi148_driver
*bridge
;
228 bridge
= tsi148_bridge
->driver_priv
;
230 for (i
= 7; i
> 0; i
--) {
231 if (stat
& (1 << i
)) {
233 * Note: Even though the registers are defined as
234 * 32-bits in the spec, we only want to issue 8-bit
235 * IACK cycles on the bus, read from offset 3.
237 vec
= ioread8(bridge
->base
+ TSI148_LCSR_VIACK
[i
] + 3);
239 vme_irq_handler(tsi148_bridge
, i
, vec
);
241 serviced
|= (1 << i
);
249 * Top level interrupt handler. Clears appropriate interrupt status bits and
250 * then calls appropriate sub handler(s).
252 static irqreturn_t
tsi148_irqhandler(int irq
, void *ptr
)
254 u32 stat
, enable
, serviced
= 0;
255 struct vme_bridge
*tsi148_bridge
;
256 struct tsi148_driver
*bridge
;
260 bridge
= tsi148_bridge
->driver_priv
;
262 /* Determine which interrupts are unmasked and set */
263 enable
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEO
);
264 stat
= ioread32be(bridge
->base
+ TSI148_LCSR_INTS
);
266 /* Only look at unmasked interrupts */
272 /* Call subhandlers as appropriate */
274 if (stat
& (TSI148_LCSR_INTS_DMA1S
| TSI148_LCSR_INTS_DMA0S
))
275 serviced
|= tsi148_DMA_irqhandler(bridge
, stat
);
277 /* Location monitor irqs */
278 if (stat
& (TSI148_LCSR_INTS_LM3S
| TSI148_LCSR_INTS_LM2S
|
279 TSI148_LCSR_INTS_LM1S
| TSI148_LCSR_INTS_LM0S
))
280 serviced
|= tsi148_LM_irqhandler(bridge
, stat
);
283 if (stat
& (TSI148_LCSR_INTS_MB3S
| TSI148_LCSR_INTS_MB2S
|
284 TSI148_LCSR_INTS_MB1S
| TSI148_LCSR_INTS_MB0S
))
285 serviced
|= tsi148_MB_irqhandler(tsi148_bridge
, stat
);
288 if (stat
& TSI148_LCSR_INTS_PERRS
)
289 serviced
|= tsi148_PERR_irqhandler(tsi148_bridge
);
292 if (stat
& TSI148_LCSR_INTS_VERRS
)
293 serviced
|= tsi148_VERR_irqhandler(tsi148_bridge
);
296 if (stat
& TSI148_LCSR_INTS_IACKS
)
297 serviced
|= tsi148_IACK_irqhandler(bridge
);
300 if (stat
& (TSI148_LCSR_INTS_IRQ7S
| TSI148_LCSR_INTS_IRQ6S
|
301 TSI148_LCSR_INTS_IRQ5S
| TSI148_LCSR_INTS_IRQ4S
|
302 TSI148_LCSR_INTS_IRQ3S
| TSI148_LCSR_INTS_IRQ2S
|
303 TSI148_LCSR_INTS_IRQ1S
))
304 serviced
|= tsi148_VIRQ_irqhandler(tsi148_bridge
, stat
);
306 /* Clear serviced interrupts */
307 iowrite32be(serviced
, bridge
->base
+ TSI148_LCSR_INTC
);
312 static int tsi148_irq_init(struct vme_bridge
*tsi148_bridge
)
316 struct pci_dev
*pdev
;
317 struct tsi148_driver
*bridge
;
319 pdev
= container_of(tsi148_bridge
->parent
, struct pci_dev
, dev
);
321 bridge
= tsi148_bridge
->driver_priv
;
323 /* Initialise list for VME bus errors */
324 INIT_LIST_HEAD(&tsi148_bridge
->vme_errors
);
326 mutex_init(&tsi148_bridge
->irq_mtx
);
328 result
= request_irq(pdev
->irq
,
331 driver_name
, tsi148_bridge
);
333 dev_err(tsi148_bridge
->parent
, "Can't get assigned pci irq "
334 "vector %02X\n", pdev
->irq
);
338 /* Enable and unmask interrupts */
339 tmp
= TSI148_LCSR_INTEO_DMA1EO
| TSI148_LCSR_INTEO_DMA0EO
|
340 TSI148_LCSR_INTEO_MB3EO
| TSI148_LCSR_INTEO_MB2EO
|
341 TSI148_LCSR_INTEO_MB1EO
| TSI148_LCSR_INTEO_MB0EO
|
342 TSI148_LCSR_INTEO_PERREO
| TSI148_LCSR_INTEO_VERREO
|
343 TSI148_LCSR_INTEO_IACKEO
;
345 /* This leaves the following interrupts masked.
346 * TSI148_LCSR_INTEO_VIEEO
347 * TSI148_LCSR_INTEO_SYSFLEO
348 * TSI148_LCSR_INTEO_ACFLEO
351 /* Don't enable Location Monitor interrupts here - they will be
352 * enabled when the location monitors are properly configured and
353 * a callback has been attached.
354 * TSI148_LCSR_INTEO_LM0EO
355 * TSI148_LCSR_INTEO_LM1EO
356 * TSI148_LCSR_INTEO_LM2EO
357 * TSI148_LCSR_INTEO_LM3EO
360 /* Don't enable VME interrupts until we add a handler, else the board
361 * will respond to it and we don't want that unless it knows how to
362 * properly deal with it.
363 * TSI148_LCSR_INTEO_IRQ7EO
364 * TSI148_LCSR_INTEO_IRQ6EO
365 * TSI148_LCSR_INTEO_IRQ5EO
366 * TSI148_LCSR_INTEO_IRQ4EO
367 * TSI148_LCSR_INTEO_IRQ3EO
368 * TSI148_LCSR_INTEO_IRQ2EO
369 * TSI148_LCSR_INTEO_IRQ1EO
372 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEO
);
373 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEN
);
378 static void tsi148_irq_exit(struct vme_bridge
*tsi148_bridge
,
379 struct pci_dev
*pdev
)
381 struct tsi148_driver
*bridge
= tsi148_bridge
->driver_priv
;
383 /* Turn off interrupts */
384 iowrite32be(0x0, bridge
->base
+ TSI148_LCSR_INTEO
);
385 iowrite32be(0x0, bridge
->base
+ TSI148_LCSR_INTEN
);
387 /* Clear all interrupts */
388 iowrite32be(0xFFFFFFFF, bridge
->base
+ TSI148_LCSR_INTC
);
390 /* Detach interrupt handler */
391 free_irq(pdev
->irq
, tsi148_bridge
);
395 * Check to see if an IACk has been received, return true (1) or false (0).
397 static int tsi148_iack_received(struct tsi148_driver
*bridge
)
401 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_VICR
);
403 if (tmp
& TSI148_LCSR_VICR_IRQS
)
410 * Configure VME interrupt
412 static void tsi148_irq_set(struct vme_bridge
*tsi148_bridge
, int level
,
415 struct pci_dev
*pdev
;
417 struct tsi148_driver
*bridge
;
419 bridge
= tsi148_bridge
->driver_priv
;
421 /* We need to do the ordering differently for enabling and disabling */
423 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEN
);
424 tmp
&= ~TSI148_LCSR_INTEN_IRQEN
[level
- 1];
425 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEN
);
427 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEO
);
428 tmp
&= ~TSI148_LCSR_INTEO_IRQEO
[level
- 1];
429 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEO
);
432 pdev
= container_of(tsi148_bridge
->parent
,
433 struct pci_dev
, dev
);
435 synchronize_irq(pdev
->irq
);
438 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEO
);
439 tmp
|= TSI148_LCSR_INTEO_IRQEO
[level
- 1];
440 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEO
);
442 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEN
);
443 tmp
|= TSI148_LCSR_INTEN_IRQEN
[level
- 1];
444 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEN
);
449 * Generate a VME bus interrupt at the requested level & vector. Wait for
450 * interrupt to be acked.
452 static int tsi148_irq_generate(struct vme_bridge
*tsi148_bridge
, int level
,
456 struct tsi148_driver
*bridge
;
458 bridge
= tsi148_bridge
->driver_priv
;
460 mutex_lock(&bridge
->vme_int
);
462 /* Read VICR register */
463 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_VICR
);
466 tmp
= (tmp
& ~TSI148_LCSR_VICR_STID_M
) |
467 (statid
& TSI148_LCSR_VICR_STID_M
);
468 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_VICR
);
470 /* Assert VMEbus IRQ */
471 tmp
= tmp
| TSI148_LCSR_VICR_IRQL
[level
];
472 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_VICR
);
474 /* XXX Consider implementing a timeout? */
475 wait_event_interruptible(bridge
->iack_queue
,
476 tsi148_iack_received(bridge
));
478 mutex_unlock(&bridge
->vme_int
);
484 * Find the first error in this address range
486 static struct vme_bus_error
*tsi148_find_error(struct vme_bridge
*tsi148_bridge
,
487 u32 aspace
, unsigned long long address
, size_t count
)
489 struct list_head
*err_pos
;
490 struct vme_bus_error
*vme_err
, *valid
= NULL
;
491 unsigned long long bound
;
493 bound
= address
+ count
;
496 * XXX We are currently not looking at the address space when parsing
497 * for errors. This is because parsing the Address Modifier Codes
498 * is going to be quite resource intensive to do properly. We
499 * should be OK just looking at the addresses and this is certainly
500 * much better than what we had before.
503 /* Iterate through errors */
504 list_for_each(err_pos
, &tsi148_bridge
->vme_errors
) {
505 vme_err
= list_entry(err_pos
, struct vme_bus_error
, list
);
506 if ((vme_err
->address
>= address
) &&
507 (vme_err
->address
< bound
)) {
518 * Clear errors in the provided address range.
520 static void tsi148_clear_errors(struct vme_bridge
*tsi148_bridge
,
521 u32 aspace
, unsigned long long address
, size_t count
)
523 struct list_head
*err_pos
, *temp
;
524 struct vme_bus_error
*vme_err
;
525 unsigned long long bound
;
527 bound
= address
+ count
;
530 * XXX We are currently not looking at the address space when parsing
531 * for errors. This is because parsing the Address Modifier Codes
532 * is going to be quite resource intensive to do properly. We
533 * should be OK just looking at the addresses and this is certainly
534 * much better than what we had before.
537 /* Iterate through errors */
538 list_for_each_safe(err_pos
, temp
, &tsi148_bridge
->vme_errors
) {
539 vme_err
= list_entry(err_pos
, struct vme_bus_error
, list
);
541 if ((vme_err
->address
>= address
) &&
542 (vme_err
->address
< bound
)) {
551 * Initialize a slave window with the requested attributes.
553 static int tsi148_slave_set(struct vme_slave_resource
*image
, int enabled
,
554 unsigned long long vme_base
, unsigned long long size
,
555 dma_addr_t pci_base
, u32 aspace
, u32 cycle
)
557 unsigned int i
, addr
= 0, granularity
= 0;
558 unsigned int temp_ctl
= 0;
559 unsigned int vme_base_low
, vme_base_high
;
560 unsigned int vme_bound_low
, vme_bound_high
;
561 unsigned int pci_offset_low
, pci_offset_high
;
562 unsigned long long vme_bound
, pci_offset
;
563 struct vme_bridge
*tsi148_bridge
;
564 struct tsi148_driver
*bridge
;
566 tsi148_bridge
= image
->parent
;
567 bridge
= tsi148_bridge
->driver_priv
;
574 addr
|= TSI148_LCSR_ITAT_AS_A16
;
577 granularity
= 0x1000;
578 addr
|= TSI148_LCSR_ITAT_AS_A24
;
581 granularity
= 0x10000;
582 addr
|= TSI148_LCSR_ITAT_AS_A32
;
585 granularity
= 0x10000;
586 addr
|= TSI148_LCSR_ITAT_AS_A64
;
594 dev_err(tsi148_bridge
->parent
, "Invalid address space\n");
599 /* Convert 64-bit variables to 2x 32-bit variables */
600 reg_split(vme_base
, &vme_base_high
, &vme_base_low
);
603 * Bound address is a valid address for the window, adjust
606 vme_bound
= vme_base
+ size
- granularity
;
607 reg_split(vme_bound
, &vme_bound_high
, &vme_bound_low
);
608 pci_offset
= (unsigned long long)pci_base
- vme_base
;
609 reg_split(pci_offset
, &pci_offset_high
, &pci_offset_low
);
611 if (vme_base_low
& (granularity
- 1)) {
612 dev_err(tsi148_bridge
->parent
, "Invalid VME base alignment\n");
615 if (vme_bound_low
& (granularity
- 1)) {
616 dev_err(tsi148_bridge
->parent
, "Invalid VME bound alignment\n");
619 if (pci_offset_low
& (granularity
- 1)) {
620 dev_err(tsi148_bridge
->parent
, "Invalid PCI Offset "
625 /* Disable while we are mucking around */
626 temp_ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
627 TSI148_LCSR_OFFSET_ITAT
);
628 temp_ctl
&= ~TSI148_LCSR_ITAT_EN
;
629 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
630 TSI148_LCSR_OFFSET_ITAT
);
633 iowrite32be(vme_base_high
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
634 TSI148_LCSR_OFFSET_ITSAU
);
635 iowrite32be(vme_base_low
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
636 TSI148_LCSR_OFFSET_ITSAL
);
637 iowrite32be(vme_bound_high
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
638 TSI148_LCSR_OFFSET_ITEAU
);
639 iowrite32be(vme_bound_low
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
640 TSI148_LCSR_OFFSET_ITEAL
);
641 iowrite32be(pci_offset_high
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
642 TSI148_LCSR_OFFSET_ITOFU
);
643 iowrite32be(pci_offset_low
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
644 TSI148_LCSR_OFFSET_ITOFL
);
646 /* Setup 2eSST speeds */
647 temp_ctl
&= ~TSI148_LCSR_ITAT_2eSSTM_M
;
648 switch (cycle
& (VME_2eSST160
| VME_2eSST267
| VME_2eSST320
)) {
650 temp_ctl
|= TSI148_LCSR_ITAT_2eSSTM_160
;
653 temp_ctl
|= TSI148_LCSR_ITAT_2eSSTM_267
;
656 temp_ctl
|= TSI148_LCSR_ITAT_2eSSTM_320
;
660 /* Setup cycle types */
661 temp_ctl
&= ~(0x1F << 7);
663 temp_ctl
|= TSI148_LCSR_ITAT_BLT
;
664 if (cycle
& VME_MBLT
)
665 temp_ctl
|= TSI148_LCSR_ITAT_MBLT
;
666 if (cycle
& VME_2eVME
)
667 temp_ctl
|= TSI148_LCSR_ITAT_2eVME
;
668 if (cycle
& VME_2eSST
)
669 temp_ctl
|= TSI148_LCSR_ITAT_2eSST
;
670 if (cycle
& VME_2eSSTB
)
671 temp_ctl
|= TSI148_LCSR_ITAT_2eSSTB
;
673 /* Setup address space */
674 temp_ctl
&= ~TSI148_LCSR_ITAT_AS_M
;
678 if (cycle
& VME_SUPER
)
679 temp_ctl
|= TSI148_LCSR_ITAT_SUPR
;
680 if (cycle
& VME_USER
)
681 temp_ctl
|= TSI148_LCSR_ITAT_NPRIV
;
682 if (cycle
& VME_PROG
)
683 temp_ctl
|= TSI148_LCSR_ITAT_PGM
;
684 if (cycle
& VME_DATA
)
685 temp_ctl
|= TSI148_LCSR_ITAT_DATA
;
687 /* Write ctl reg without enable */
688 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
689 TSI148_LCSR_OFFSET_ITAT
);
692 temp_ctl
|= TSI148_LCSR_ITAT_EN
;
694 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_IT
[i
] +
695 TSI148_LCSR_OFFSET_ITAT
);
701 * Get slave window configuration.
703 static int tsi148_slave_get(struct vme_slave_resource
*image
, int *enabled
,
704 unsigned long long *vme_base
, unsigned long long *size
,
705 dma_addr_t
*pci_base
, u32
*aspace
, u32
*cycle
)
707 unsigned int i
, granularity
= 0, ctl
= 0;
708 unsigned int vme_base_low
, vme_base_high
;
709 unsigned int vme_bound_low
, vme_bound_high
;
710 unsigned int pci_offset_low
, pci_offset_high
;
711 unsigned long long vme_bound
, pci_offset
;
712 struct tsi148_driver
*bridge
;
714 bridge
= image
->parent
->driver_priv
;
719 ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
720 TSI148_LCSR_OFFSET_ITAT
);
722 vme_base_high
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
723 TSI148_LCSR_OFFSET_ITSAU
);
724 vme_base_low
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
725 TSI148_LCSR_OFFSET_ITSAL
);
726 vme_bound_high
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
727 TSI148_LCSR_OFFSET_ITEAU
);
728 vme_bound_low
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
729 TSI148_LCSR_OFFSET_ITEAL
);
730 pci_offset_high
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
731 TSI148_LCSR_OFFSET_ITOFU
);
732 pci_offset_low
= ioread32be(bridge
->base
+ TSI148_LCSR_IT
[i
] +
733 TSI148_LCSR_OFFSET_ITOFL
);
735 /* Convert 64-bit variables to 2x 32-bit variables */
736 reg_join(vme_base_high
, vme_base_low
, vme_base
);
737 reg_join(vme_bound_high
, vme_bound_low
, &vme_bound
);
738 reg_join(pci_offset_high
, pci_offset_low
, &pci_offset
);
740 *pci_base
= (dma_addr_t
)vme_base
+ pci_offset
;
746 if (ctl
& TSI148_LCSR_ITAT_EN
)
749 if ((ctl
& TSI148_LCSR_ITAT_AS_M
) == TSI148_LCSR_ITAT_AS_A16
) {
753 if ((ctl
& TSI148_LCSR_ITAT_AS_M
) == TSI148_LCSR_ITAT_AS_A24
) {
754 granularity
= 0x1000;
757 if ((ctl
& TSI148_LCSR_ITAT_AS_M
) == TSI148_LCSR_ITAT_AS_A32
) {
758 granularity
= 0x10000;
761 if ((ctl
& TSI148_LCSR_ITAT_AS_M
) == TSI148_LCSR_ITAT_AS_A64
) {
762 granularity
= 0x10000;
766 /* Need granularity before we set the size */
767 *size
= (unsigned long long)((vme_bound
- *vme_base
) + granularity
);
770 if ((ctl
& TSI148_LCSR_ITAT_2eSSTM_M
) == TSI148_LCSR_ITAT_2eSSTM_160
)
771 *cycle
|= VME_2eSST160
;
772 if ((ctl
& TSI148_LCSR_ITAT_2eSSTM_M
) == TSI148_LCSR_ITAT_2eSSTM_267
)
773 *cycle
|= VME_2eSST267
;
774 if ((ctl
& TSI148_LCSR_ITAT_2eSSTM_M
) == TSI148_LCSR_ITAT_2eSSTM_320
)
775 *cycle
|= VME_2eSST320
;
777 if (ctl
& TSI148_LCSR_ITAT_BLT
)
779 if (ctl
& TSI148_LCSR_ITAT_MBLT
)
781 if (ctl
& TSI148_LCSR_ITAT_2eVME
)
783 if (ctl
& TSI148_LCSR_ITAT_2eSST
)
785 if (ctl
& TSI148_LCSR_ITAT_2eSSTB
)
786 *cycle
|= VME_2eSSTB
;
788 if (ctl
& TSI148_LCSR_ITAT_SUPR
)
790 if (ctl
& TSI148_LCSR_ITAT_NPRIV
)
792 if (ctl
& TSI148_LCSR_ITAT_PGM
)
794 if (ctl
& TSI148_LCSR_ITAT_DATA
)
801 * Allocate and map PCI Resource
803 static int tsi148_alloc_resource(struct vme_master_resource
*image
,
804 unsigned long long size
)
806 unsigned long long existing_size
;
808 struct pci_dev
*pdev
;
809 struct vme_bridge
*tsi148_bridge
;
811 tsi148_bridge
= image
->parent
;
813 pdev
= container_of(tsi148_bridge
->parent
, struct pci_dev
, dev
);
815 existing_size
= (unsigned long long)(image
->bus_resource
.end
-
816 image
->bus_resource
.start
);
818 /* If the existing size is OK, return */
819 if ((size
!= 0) && (existing_size
== (size
- 1)))
822 if (existing_size
!= 0) {
823 iounmap(image
->kern_base
);
824 image
->kern_base
= NULL
;
825 kfree(image
->bus_resource
.name
);
826 release_resource(&image
->bus_resource
);
827 memset(&image
->bus_resource
, 0, sizeof(struct resource
));
830 /* Exit here if size is zero */
834 if (image
->bus_resource
.name
== NULL
) {
835 image
->bus_resource
.name
= kmalloc(VMENAMSIZ
+3, GFP_ATOMIC
);
836 if (image
->bus_resource
.name
== NULL
) {
837 dev_err(tsi148_bridge
->parent
, "Unable to allocate "
838 "memory for resource name\n");
844 sprintf((char *)image
->bus_resource
.name
, "%s.%d", tsi148_bridge
->name
,
847 image
->bus_resource
.start
= 0;
848 image
->bus_resource
.end
= (unsigned long)size
;
849 image
->bus_resource
.flags
= IORESOURCE_MEM
;
851 retval
= pci_bus_alloc_resource(pdev
->bus
,
852 &image
->bus_resource
, size
, size
, PCIBIOS_MIN_MEM
,
855 dev_err(tsi148_bridge
->parent
, "Failed to allocate mem "
856 "resource for window %d size 0x%lx start 0x%lx\n",
857 image
->number
, (unsigned long)size
,
858 (unsigned long)image
->bus_resource
.start
);
862 image
->kern_base
= ioremap_nocache(
863 image
->bus_resource
.start
, size
);
864 if (image
->kern_base
== NULL
) {
865 dev_err(tsi148_bridge
->parent
, "Failed to remap resource\n");
873 release_resource(&image
->bus_resource
);
875 kfree(image
->bus_resource
.name
);
876 memset(&image
->bus_resource
, 0, sizeof(struct resource
));
882 * Free and unmap PCI Resource
884 static void tsi148_free_resource(struct vme_master_resource
*image
)
886 iounmap(image
->kern_base
);
887 image
->kern_base
= NULL
;
888 release_resource(&image
->bus_resource
);
889 kfree(image
->bus_resource
.name
);
890 memset(&image
->bus_resource
, 0, sizeof(struct resource
));
894 * Set the attributes of an outbound window.
896 static int tsi148_master_set(struct vme_master_resource
*image
, int enabled
,
897 unsigned long long vme_base
, unsigned long long size
, u32 aspace
,
898 u32 cycle
, u32 dwidth
)
902 unsigned int temp_ctl
= 0;
903 unsigned int pci_base_low
, pci_base_high
;
904 unsigned int pci_bound_low
, pci_bound_high
;
905 unsigned int vme_offset_low
, vme_offset_high
;
906 unsigned long long pci_bound
, vme_offset
, pci_base
;
907 struct vme_bridge
*tsi148_bridge
;
908 struct tsi148_driver
*bridge
;
910 tsi148_bridge
= image
->parent
;
912 bridge
= tsi148_bridge
->driver_priv
;
914 /* Verify input data */
915 if (vme_base
& 0xFFFF) {
916 dev_err(tsi148_bridge
->parent
, "Invalid VME Window "
922 if ((size
== 0) && (enabled
!= 0)) {
923 dev_err(tsi148_bridge
->parent
, "Size must be non-zero for "
924 "enabled windows\n");
929 spin_lock(&image
->lock
);
931 /* Let's allocate the resource here rather than further up the stack as
932 * it avoids pushing loads of bus dependent stuff up the stack. If size
933 * is zero, any existing resource will be freed.
935 retval
= tsi148_alloc_resource(image
, size
);
937 spin_unlock(&image
->lock
);
938 dev_err(tsi148_bridge
->parent
, "Unable to allocate memory for "
948 pci_base
= (unsigned long long)image
->bus_resource
.start
;
951 * Bound address is a valid address for the window, adjust
952 * according to window granularity.
954 pci_bound
= pci_base
+ (size
- 0x10000);
955 vme_offset
= vme_base
- pci_base
;
958 /* Convert 64-bit variables to 2x 32-bit variables */
959 reg_split(pci_base
, &pci_base_high
, &pci_base_low
);
960 reg_split(pci_bound
, &pci_bound_high
, &pci_bound_low
);
961 reg_split(vme_offset
, &vme_offset_high
, &vme_offset_low
);
963 if (pci_base_low
& 0xFFFF) {
964 spin_unlock(&image
->lock
);
965 dev_err(tsi148_bridge
->parent
, "Invalid PCI base alignment\n");
969 if (pci_bound_low
& 0xFFFF) {
970 spin_unlock(&image
->lock
);
971 dev_err(tsi148_bridge
->parent
, "Invalid PCI bound alignment\n");
975 if (vme_offset_low
& 0xFFFF) {
976 spin_unlock(&image
->lock
);
977 dev_err(tsi148_bridge
->parent
, "Invalid VME Offset "
985 /* Disable while we are mucking around */
986 temp_ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
987 TSI148_LCSR_OFFSET_OTAT
);
988 temp_ctl
&= ~TSI148_LCSR_OTAT_EN
;
989 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
990 TSI148_LCSR_OFFSET_OTAT
);
992 /* Setup 2eSST speeds */
993 temp_ctl
&= ~TSI148_LCSR_OTAT_2eSSTM_M
;
994 switch (cycle
& (VME_2eSST160
| VME_2eSST267
| VME_2eSST320
)) {
996 temp_ctl
|= TSI148_LCSR_OTAT_2eSSTM_160
;
999 temp_ctl
|= TSI148_LCSR_OTAT_2eSSTM_267
;
1002 temp_ctl
|= TSI148_LCSR_OTAT_2eSSTM_320
;
1006 /* Setup cycle types */
1007 if (cycle
& VME_BLT
) {
1008 temp_ctl
&= ~TSI148_LCSR_OTAT_TM_M
;
1009 temp_ctl
|= TSI148_LCSR_OTAT_TM_BLT
;
1011 if (cycle
& VME_MBLT
) {
1012 temp_ctl
&= ~TSI148_LCSR_OTAT_TM_M
;
1013 temp_ctl
|= TSI148_LCSR_OTAT_TM_MBLT
;
1015 if (cycle
& VME_2eVME
) {
1016 temp_ctl
&= ~TSI148_LCSR_OTAT_TM_M
;
1017 temp_ctl
|= TSI148_LCSR_OTAT_TM_2eVME
;
1019 if (cycle
& VME_2eSST
) {
1020 temp_ctl
&= ~TSI148_LCSR_OTAT_TM_M
;
1021 temp_ctl
|= TSI148_LCSR_OTAT_TM_2eSST
;
1023 if (cycle
& VME_2eSSTB
) {
1024 dev_warn(tsi148_bridge
->parent
, "Currently not setting "
1025 "Broadcast Select Registers\n");
1026 temp_ctl
&= ~TSI148_LCSR_OTAT_TM_M
;
1027 temp_ctl
|= TSI148_LCSR_OTAT_TM_2eSSTB
;
1030 /* Setup data width */
1031 temp_ctl
&= ~TSI148_LCSR_OTAT_DBW_M
;
1034 temp_ctl
|= TSI148_LCSR_OTAT_DBW_16
;
1037 temp_ctl
|= TSI148_LCSR_OTAT_DBW_32
;
1040 spin_unlock(&image
->lock
);
1041 dev_err(tsi148_bridge
->parent
, "Invalid data width\n");
1046 /* Setup address space */
1047 temp_ctl
&= ~TSI148_LCSR_OTAT_AMODE_M
;
1050 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_A16
;
1053 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_A24
;
1056 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_A32
;
1059 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_A64
;
1062 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_CRCSR
;
1065 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_USER1
;
1068 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_USER2
;
1071 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_USER3
;
1074 temp_ctl
|= TSI148_LCSR_OTAT_AMODE_USER4
;
1077 spin_unlock(&image
->lock
);
1078 dev_err(tsi148_bridge
->parent
, "Invalid address space\n");
1084 temp_ctl
&= ~(3<<4);
1085 if (cycle
& VME_SUPER
)
1086 temp_ctl
|= TSI148_LCSR_OTAT_SUP
;
1087 if (cycle
& VME_PROG
)
1088 temp_ctl
|= TSI148_LCSR_OTAT_PGM
;
1091 iowrite32be(pci_base_high
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1092 TSI148_LCSR_OFFSET_OTSAU
);
1093 iowrite32be(pci_base_low
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1094 TSI148_LCSR_OFFSET_OTSAL
);
1095 iowrite32be(pci_bound_high
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1096 TSI148_LCSR_OFFSET_OTEAU
);
1097 iowrite32be(pci_bound_low
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1098 TSI148_LCSR_OFFSET_OTEAL
);
1099 iowrite32be(vme_offset_high
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1100 TSI148_LCSR_OFFSET_OTOFU
);
1101 iowrite32be(vme_offset_low
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1102 TSI148_LCSR_OFFSET_OTOFL
);
1104 /* Write ctl reg without enable */
1105 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1106 TSI148_LCSR_OFFSET_OTAT
);
1109 temp_ctl
|= TSI148_LCSR_OTAT_EN
;
1111 iowrite32be(temp_ctl
, bridge
->base
+ TSI148_LCSR_OT
[i
] +
1112 TSI148_LCSR_OFFSET_OTAT
);
1114 spin_unlock(&image
->lock
);
1120 tsi148_free_resource(image
);
1128 * Set the attributes of an outbound window.
1130 * XXX Not parsing prefetch information.
1132 static int __tsi148_master_get(struct vme_master_resource
*image
, int *enabled
,
1133 unsigned long long *vme_base
, unsigned long long *size
, u32
*aspace
,
1134 u32
*cycle
, u32
*dwidth
)
1136 unsigned int i
, ctl
;
1137 unsigned int pci_base_low
, pci_base_high
;
1138 unsigned int pci_bound_low
, pci_bound_high
;
1139 unsigned int vme_offset_low
, vme_offset_high
;
1141 unsigned long long pci_base
, pci_bound
, vme_offset
;
1142 struct tsi148_driver
*bridge
;
1144 bridge
= image
->parent
->driver_priv
;
1148 ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1149 TSI148_LCSR_OFFSET_OTAT
);
1151 pci_base_high
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1152 TSI148_LCSR_OFFSET_OTSAU
);
1153 pci_base_low
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1154 TSI148_LCSR_OFFSET_OTSAL
);
1155 pci_bound_high
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1156 TSI148_LCSR_OFFSET_OTEAU
);
1157 pci_bound_low
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1158 TSI148_LCSR_OFFSET_OTEAL
);
1159 vme_offset_high
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1160 TSI148_LCSR_OFFSET_OTOFU
);
1161 vme_offset_low
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1162 TSI148_LCSR_OFFSET_OTOFL
);
1164 /* Convert 64-bit variables to 2x 32-bit variables */
1165 reg_join(pci_base_high
, pci_base_low
, &pci_base
);
1166 reg_join(pci_bound_high
, pci_bound_low
, &pci_bound
);
1167 reg_join(vme_offset_high
, vme_offset_low
, &vme_offset
);
1169 *vme_base
= pci_base
+ vme_offset
;
1170 *size
= (unsigned long long)(pci_bound
- pci_base
) + 0x10000;
1177 if (ctl
& TSI148_LCSR_OTAT_EN
)
1180 /* Setup address space */
1181 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_A16
)
1183 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_A24
)
1185 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_A32
)
1187 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_A64
)
1189 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_CRCSR
)
1190 *aspace
|= VME_CRCSR
;
1191 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_USER1
)
1192 *aspace
|= VME_USER1
;
1193 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_USER2
)
1194 *aspace
|= VME_USER2
;
1195 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_USER3
)
1196 *aspace
|= VME_USER3
;
1197 if ((ctl
& TSI148_LCSR_OTAT_AMODE_M
) == TSI148_LCSR_OTAT_AMODE_USER4
)
1198 *aspace
|= VME_USER4
;
1200 /* Setup 2eSST speeds */
1201 if ((ctl
& TSI148_LCSR_OTAT_2eSSTM_M
) == TSI148_LCSR_OTAT_2eSSTM_160
)
1202 *cycle
|= VME_2eSST160
;
1203 if ((ctl
& TSI148_LCSR_OTAT_2eSSTM_M
) == TSI148_LCSR_OTAT_2eSSTM_267
)
1204 *cycle
|= VME_2eSST267
;
1205 if ((ctl
& TSI148_LCSR_OTAT_2eSSTM_M
) == TSI148_LCSR_OTAT_2eSSTM_320
)
1206 *cycle
|= VME_2eSST320
;
1208 /* Setup cycle types */
1209 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_SCT
)
1211 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_BLT
)
1213 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_MBLT
)
1215 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_2eVME
)
1216 *cycle
|= VME_2eVME
;
1217 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_2eSST
)
1218 *cycle
|= VME_2eSST
;
1219 if ((ctl
& TSI148_LCSR_OTAT_TM_M
) == TSI148_LCSR_OTAT_TM_2eSSTB
)
1220 *cycle
|= VME_2eSSTB
;
1222 if (ctl
& TSI148_LCSR_OTAT_SUP
)
1223 *cycle
|= VME_SUPER
;
1227 if (ctl
& TSI148_LCSR_OTAT_PGM
)
1232 /* Setup data width */
1233 if ((ctl
& TSI148_LCSR_OTAT_DBW_M
) == TSI148_LCSR_OTAT_DBW_16
)
1235 if ((ctl
& TSI148_LCSR_OTAT_DBW_M
) == TSI148_LCSR_OTAT_DBW_32
)
1242 static int tsi148_master_get(struct vme_master_resource
*image
, int *enabled
,
1243 unsigned long long *vme_base
, unsigned long long *size
, u32
*aspace
,
1244 u32
*cycle
, u32
*dwidth
)
1248 spin_lock(&image
->lock
);
1250 retval
= __tsi148_master_get(image
, enabled
, vme_base
, size
, aspace
,
1253 spin_unlock(&image
->lock
);
1258 static ssize_t
tsi148_master_read(struct vme_master_resource
*image
, void *buf
,
1259 size_t count
, loff_t offset
)
1261 int retval
, enabled
;
1262 unsigned long long vme_base
, size
;
1263 u32 aspace
, cycle
, dwidth
;
1264 struct vme_bus_error
*vme_err
= NULL
;
1265 struct vme_bridge
*tsi148_bridge
;
1267 tsi148_bridge
= image
->parent
;
1269 spin_lock(&image
->lock
);
1271 memcpy_fromio(buf
, image
->kern_base
+ offset
, (unsigned int)count
);
1277 __tsi148_master_get(image
, &enabled
, &vme_base
, &size
, &aspace
, &cycle
,
1280 vme_err
= tsi148_find_error(tsi148_bridge
, aspace
, vme_base
+ offset
,
1282 if (vme_err
!= NULL
) {
1283 dev_err(image
->parent
->parent
, "First VME read error detected "
1284 "an at address 0x%llx\n", vme_err
->address
);
1285 retval
= vme_err
->address
- (vme_base
+ offset
);
1286 /* Clear down save errors in this address range */
1287 tsi148_clear_errors(tsi148_bridge
, aspace
, vme_base
+ offset
,
1292 spin_unlock(&image
->lock
);
1298 static ssize_t
tsi148_master_write(struct vme_master_resource
*image
, void *buf
,
1299 size_t count
, loff_t offset
)
1301 int retval
= 0, enabled
;
1302 unsigned long long vme_base
, size
;
1303 u32 aspace
, cycle
, dwidth
;
1305 struct vme_bus_error
*vme_err
= NULL
;
1306 struct vme_bridge
*tsi148_bridge
;
1307 struct tsi148_driver
*bridge
;
1309 tsi148_bridge
= image
->parent
;
1311 bridge
= tsi148_bridge
->driver_priv
;
1313 spin_lock(&image
->lock
);
1315 memcpy_toio(image
->kern_base
+ offset
, buf
, (unsigned int)count
);
1319 * Writes are posted. We need to do a read on the VME bus to flush out
1320 * all of the writes before we check for errors. We can't guarantee
1321 * that reading the data we have just written is safe. It is believed
1322 * that there isn't any read, write re-ordering, so we can read any
1323 * location in VME space, so lets read the Device ID from the tsi148's
1324 * own registers as mapped into CR/CSR space.
1326 * We check for saved errors in the written address range/space.
1333 * Get window info first, to maximise the time that the buffers may
1334 * fluch on their own
1336 __tsi148_master_get(image
, &enabled
, &vme_base
, &size
, &aspace
, &cycle
,
1339 ioread16(bridge
->flush_image
->kern_base
+ 0x7F000);
1341 vme_err
= tsi148_find_error(tsi148_bridge
, aspace
, vme_base
+ offset
,
1343 if (vme_err
!= NULL
) {
1344 dev_warn(tsi148_bridge
->parent
, "First VME write error detected"
1345 " an at address 0x%llx\n", vme_err
->address
);
1346 retval
= vme_err
->address
- (vme_base
+ offset
);
1347 /* Clear down save errors in this address range */
1348 tsi148_clear_errors(tsi148_bridge
, aspace
, vme_base
+ offset
,
1353 spin_unlock(&image
->lock
);
1359 * Perform an RMW cycle on the VME bus.
1361 * Requires a previously configured master window, returns final value.
1363 static unsigned int tsi148_master_rmw(struct vme_master_resource
*image
,
1364 unsigned int mask
, unsigned int compare
, unsigned int swap
,
1367 unsigned long long pci_addr
;
1368 unsigned int pci_addr_high
, pci_addr_low
;
1371 struct tsi148_driver
*bridge
;
1373 bridge
= image
->parent
->driver_priv
;
1375 /* Find the PCI address that maps to the desired VME address */
1378 /* Locking as we can only do one of these at a time */
1379 mutex_lock(&bridge
->vme_rmw
);
1382 spin_lock(&image
->lock
);
1384 pci_addr_high
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1385 TSI148_LCSR_OFFSET_OTSAU
);
1386 pci_addr_low
= ioread32be(bridge
->base
+ TSI148_LCSR_OT
[i
] +
1387 TSI148_LCSR_OFFSET_OTSAL
);
1389 reg_join(pci_addr_high
, pci_addr_low
, &pci_addr
);
1390 reg_split(pci_addr
+ offset
, &pci_addr_high
, &pci_addr_low
);
1392 /* Configure registers */
1393 iowrite32be(mask
, bridge
->base
+ TSI148_LCSR_RMWEN
);
1394 iowrite32be(compare
, bridge
->base
+ TSI148_LCSR_RMWC
);
1395 iowrite32be(swap
, bridge
->base
+ TSI148_LCSR_RMWS
);
1396 iowrite32be(pci_addr_high
, bridge
->base
+ TSI148_LCSR_RMWAU
);
1397 iowrite32be(pci_addr_low
, bridge
->base
+ TSI148_LCSR_RMWAL
);
1400 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_VMCTRL
);
1401 tmp
|= TSI148_LCSR_VMCTRL_RMWEN
;
1402 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_VMCTRL
);
1404 /* Kick process off with a read to the required address. */
1405 result
= ioread32be(image
->kern_base
+ offset
);
1408 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_VMCTRL
);
1409 tmp
&= ~TSI148_LCSR_VMCTRL_RMWEN
;
1410 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_VMCTRL
);
1412 spin_unlock(&image
->lock
);
1414 mutex_unlock(&bridge
->vme_rmw
);
1419 static int tsi148_dma_set_vme_src_attributes(struct device
*dev
, __be32
*attr
,
1420 u32 aspace
, u32 cycle
, u32 dwidth
)
1424 val
= be32_to_cpu(*attr
);
1426 /* Setup 2eSST speeds */
1427 switch (cycle
& (VME_2eSST160
| VME_2eSST267
| VME_2eSST320
)) {
1429 val
|= TSI148_LCSR_DSAT_2eSSTM_160
;
1432 val
|= TSI148_LCSR_DSAT_2eSSTM_267
;
1435 val
|= TSI148_LCSR_DSAT_2eSSTM_320
;
1439 /* Setup cycle types */
1440 if (cycle
& VME_SCT
)
1441 val
|= TSI148_LCSR_DSAT_TM_SCT
;
1443 if (cycle
& VME_BLT
)
1444 val
|= TSI148_LCSR_DSAT_TM_BLT
;
1446 if (cycle
& VME_MBLT
)
1447 val
|= TSI148_LCSR_DSAT_TM_MBLT
;
1449 if (cycle
& VME_2eVME
)
1450 val
|= TSI148_LCSR_DSAT_TM_2eVME
;
1452 if (cycle
& VME_2eSST
)
1453 val
|= TSI148_LCSR_DSAT_TM_2eSST
;
1455 if (cycle
& VME_2eSSTB
) {
1456 dev_err(dev
, "Currently not setting Broadcast Select "
1458 val
|= TSI148_LCSR_DSAT_TM_2eSSTB
;
1461 /* Setup data width */
1464 val
|= TSI148_LCSR_DSAT_DBW_16
;
1467 val
|= TSI148_LCSR_DSAT_DBW_32
;
1470 dev_err(dev
, "Invalid data width\n");
1474 /* Setup address space */
1477 val
|= TSI148_LCSR_DSAT_AMODE_A16
;
1480 val
|= TSI148_LCSR_DSAT_AMODE_A24
;
1483 val
|= TSI148_LCSR_DSAT_AMODE_A32
;
1486 val
|= TSI148_LCSR_DSAT_AMODE_A64
;
1489 val
|= TSI148_LCSR_DSAT_AMODE_CRCSR
;
1492 val
|= TSI148_LCSR_DSAT_AMODE_USER1
;
1495 val
|= TSI148_LCSR_DSAT_AMODE_USER2
;
1498 val
|= TSI148_LCSR_DSAT_AMODE_USER3
;
1501 val
|= TSI148_LCSR_DSAT_AMODE_USER4
;
1504 dev_err(dev
, "Invalid address space\n");
1509 if (cycle
& VME_SUPER
)
1510 val
|= TSI148_LCSR_DSAT_SUP
;
1511 if (cycle
& VME_PROG
)
1512 val
|= TSI148_LCSR_DSAT_PGM
;
1514 *attr
= cpu_to_be32(val
);
1519 static int tsi148_dma_set_vme_dest_attributes(struct device
*dev
, __be32
*attr
,
1520 u32 aspace
, u32 cycle
, u32 dwidth
)
1524 val
= be32_to_cpu(*attr
);
1526 /* Setup 2eSST speeds */
1527 switch (cycle
& (VME_2eSST160
| VME_2eSST267
| VME_2eSST320
)) {
1529 val
|= TSI148_LCSR_DDAT_2eSSTM_160
;
1532 val
|= TSI148_LCSR_DDAT_2eSSTM_267
;
1535 val
|= TSI148_LCSR_DDAT_2eSSTM_320
;
1539 /* Setup cycle types */
1540 if (cycle
& VME_SCT
)
1541 val
|= TSI148_LCSR_DDAT_TM_SCT
;
1543 if (cycle
& VME_BLT
)
1544 val
|= TSI148_LCSR_DDAT_TM_BLT
;
1546 if (cycle
& VME_MBLT
)
1547 val
|= TSI148_LCSR_DDAT_TM_MBLT
;
1549 if (cycle
& VME_2eVME
)
1550 val
|= TSI148_LCSR_DDAT_TM_2eVME
;
1552 if (cycle
& VME_2eSST
)
1553 val
|= TSI148_LCSR_DDAT_TM_2eSST
;
1555 if (cycle
& VME_2eSSTB
) {
1556 dev_err(dev
, "Currently not setting Broadcast Select "
1558 val
|= TSI148_LCSR_DDAT_TM_2eSSTB
;
1561 /* Setup data width */
1564 val
|= TSI148_LCSR_DDAT_DBW_16
;
1567 val
|= TSI148_LCSR_DDAT_DBW_32
;
1570 dev_err(dev
, "Invalid data width\n");
1574 /* Setup address space */
1577 val
|= TSI148_LCSR_DDAT_AMODE_A16
;
1580 val
|= TSI148_LCSR_DDAT_AMODE_A24
;
1583 val
|= TSI148_LCSR_DDAT_AMODE_A32
;
1586 val
|= TSI148_LCSR_DDAT_AMODE_A64
;
1589 val
|= TSI148_LCSR_DDAT_AMODE_CRCSR
;
1592 val
|= TSI148_LCSR_DDAT_AMODE_USER1
;
1595 val
|= TSI148_LCSR_DDAT_AMODE_USER2
;
1598 val
|= TSI148_LCSR_DDAT_AMODE_USER3
;
1601 val
|= TSI148_LCSR_DDAT_AMODE_USER4
;
1604 dev_err(dev
, "Invalid address space\n");
1609 if (cycle
& VME_SUPER
)
1610 val
|= TSI148_LCSR_DDAT_SUP
;
1611 if (cycle
& VME_PROG
)
1612 val
|= TSI148_LCSR_DDAT_PGM
;
1614 *attr
= cpu_to_be32(val
);
1620 * Add a link list descriptor to the list
1622 * Note: DMA engine expects the DMA descriptor to be big endian.
1624 static int tsi148_dma_list_add(struct vme_dma_list
*list
,
1625 struct vme_dma_attr
*src
, struct vme_dma_attr
*dest
, size_t count
)
1627 struct tsi148_dma_entry
*entry
, *prev
;
1628 u32 address_high
, address_low
, val
;
1629 struct vme_dma_pattern
*pattern_attr
;
1630 struct vme_dma_pci
*pci_attr
;
1631 struct vme_dma_vme
*vme_attr
;
1633 struct vme_bridge
*tsi148_bridge
;
1635 tsi148_bridge
= list
->parent
->parent
;
1637 /* Descriptor must be aligned on 64-bit boundaries */
1638 entry
= kmalloc(sizeof(struct tsi148_dma_entry
), GFP_KERNEL
);
1639 if (entry
== NULL
) {
1640 dev_err(tsi148_bridge
->parent
, "Failed to allocate memory for "
1641 "dma resource structure\n");
1646 /* Test descriptor alignment */
1647 if ((unsigned long)&entry
->descriptor
& 0x7) {
1648 dev_err(tsi148_bridge
->parent
, "Descriptor not aligned to 8 "
1649 "byte boundary as required: %p\n",
1650 &entry
->descriptor
);
1655 /* Given we are going to fill out the structure, we probably don't
1656 * need to zero it, but better safe than sorry for now.
1658 memset(&entry
->descriptor
, 0, sizeof(struct tsi148_dma_descriptor
));
1660 /* Fill out source part */
1661 switch (src
->type
) {
1662 case VME_DMA_PATTERN
:
1663 pattern_attr
= src
->private;
1665 entry
->descriptor
.dsal
= cpu_to_be32(pattern_attr
->pattern
);
1667 val
= TSI148_LCSR_DSAT_TYP_PAT
;
1669 /* Default behaviour is 32 bit pattern */
1670 if (pattern_attr
->type
& VME_DMA_PATTERN_BYTE
)
1671 val
|= TSI148_LCSR_DSAT_PSZ
;
1673 /* It seems that the default behaviour is to increment */
1674 if ((pattern_attr
->type
& VME_DMA_PATTERN_INCREMENT
) == 0)
1675 val
|= TSI148_LCSR_DSAT_NIN
;
1676 entry
->descriptor
.dsat
= cpu_to_be32(val
);
1679 pci_attr
= src
->private;
1681 reg_split((unsigned long long)pci_attr
->address
, &address_high
,
1683 entry
->descriptor
.dsau
= cpu_to_be32(address_high
);
1684 entry
->descriptor
.dsal
= cpu_to_be32(address_low
);
1685 entry
->descriptor
.dsat
= cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI
);
1688 vme_attr
= src
->private;
1690 reg_split((unsigned long long)vme_attr
->address
, &address_high
,
1692 entry
->descriptor
.dsau
= cpu_to_be32(address_high
);
1693 entry
->descriptor
.dsal
= cpu_to_be32(address_low
);
1694 entry
->descriptor
.dsat
= cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME
);
1696 retval
= tsi148_dma_set_vme_src_attributes(
1697 tsi148_bridge
->parent
, &entry
->descriptor
.dsat
,
1698 vme_attr
->aspace
, vme_attr
->cycle
, vme_attr
->dwidth
);
1703 dev_err(tsi148_bridge
->parent
, "Invalid source type\n");
1709 /* Assume last link - this will be over-written by adding another */
1710 entry
->descriptor
.dnlau
= cpu_to_be32(0);
1711 entry
->descriptor
.dnlal
= cpu_to_be32(TSI148_LCSR_DNLAL_LLA
);
1713 /* Fill out destination part */
1714 switch (dest
->type
) {
1716 pci_attr
= dest
->private;
1718 reg_split((unsigned long long)pci_attr
->address
, &address_high
,
1720 entry
->descriptor
.ddau
= cpu_to_be32(address_high
);
1721 entry
->descriptor
.ddal
= cpu_to_be32(address_low
);
1722 entry
->descriptor
.ddat
= cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI
);
1725 vme_attr
= dest
->private;
1727 reg_split((unsigned long long)vme_attr
->address
, &address_high
,
1729 entry
->descriptor
.ddau
= cpu_to_be32(address_high
);
1730 entry
->descriptor
.ddal
= cpu_to_be32(address_low
);
1731 entry
->descriptor
.ddat
= cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME
);
1733 retval
= tsi148_dma_set_vme_dest_attributes(
1734 tsi148_bridge
->parent
, &entry
->descriptor
.ddat
,
1735 vme_attr
->aspace
, vme_attr
->cycle
, vme_attr
->dwidth
);
1740 dev_err(tsi148_bridge
->parent
, "Invalid destination type\n");
1746 /* Fill out count */
1747 entry
->descriptor
.dcnt
= cpu_to_be32((u32
)count
);
1750 list_add_tail(&entry
->list
, &list
->entries
);
1752 /* Fill out previous descriptors "Next Address" */
1753 if (entry
->list
.prev
!= &list
->entries
) {
1754 prev
= list_entry(entry
->list
.prev
, struct tsi148_dma_entry
,
1756 /* We need the bus address for the pointer */
1757 entry
->dma_handle
= dma_map_single(tsi148_bridge
->parent
,
1759 sizeof(struct tsi148_dma_descriptor
), DMA_TO_DEVICE
);
1761 reg_split((unsigned long long)entry
->dma_handle
, &address_high
,
1763 entry
->descriptor
.dnlau
= cpu_to_be32(address_high
);
1764 entry
->descriptor
.dnlal
= cpu_to_be32(address_low
);
1779 * Check to see if the provided DMA channel is busy.
1781 static int tsi148_dma_busy(struct vme_bridge
*tsi148_bridge
, int channel
)
1784 struct tsi148_driver
*bridge
;
1786 bridge
= tsi148_bridge
->driver_priv
;
1788 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_DMA
[channel
] +
1789 TSI148_LCSR_OFFSET_DSTA
);
1791 if (tmp
& TSI148_LCSR_DSTA_BSY
)
1799 * Execute a previously generated link list
1801 * XXX Need to provide control register configuration.
1803 static int tsi148_dma_list_exec(struct vme_dma_list
*list
)
1805 struct vme_dma_resource
*ctrlr
;
1806 int channel
, retval
= 0;
1807 struct tsi148_dma_entry
*entry
;
1808 u32 bus_addr_high
, bus_addr_low
;
1809 u32 val
, dctlreg
= 0;
1810 struct vme_bridge
*tsi148_bridge
;
1811 struct tsi148_driver
*bridge
;
1813 ctrlr
= list
->parent
;
1815 tsi148_bridge
= ctrlr
->parent
;
1817 bridge
= tsi148_bridge
->driver_priv
;
1819 mutex_lock(&ctrlr
->mtx
);
1821 channel
= ctrlr
->number
;
1823 if (!list_empty(&ctrlr
->running
)) {
1825 * XXX We have an active DMA transfer and currently haven't
1826 * sorted out the mechanism for "pending" DMA transfers.
1829 /* Need to add to pending here */
1830 mutex_unlock(&ctrlr
->mtx
);
1833 list_add(&list
->list
, &ctrlr
->running
);
1836 /* Get first bus address and write into registers */
1837 entry
= list_first_entry(&list
->entries
, struct tsi148_dma_entry
,
1840 entry
->dma_handle
= dma_map_single(tsi148_bridge
->parent
,
1842 sizeof(struct tsi148_dma_descriptor
), DMA_TO_DEVICE
);
1844 mutex_unlock(&ctrlr
->mtx
);
1846 reg_split(entry
->dma_handle
, &bus_addr_high
, &bus_addr_low
);
1848 iowrite32be(bus_addr_high
, bridge
->base
+
1849 TSI148_LCSR_DMA
[channel
] + TSI148_LCSR_OFFSET_DNLAU
);
1850 iowrite32be(bus_addr_low
, bridge
->base
+
1851 TSI148_LCSR_DMA
[channel
] + TSI148_LCSR_OFFSET_DNLAL
);
1853 dctlreg
= ioread32be(bridge
->base
+ TSI148_LCSR_DMA
[channel
] +
1854 TSI148_LCSR_OFFSET_DCTL
);
1856 /* Start the operation */
1857 iowrite32be(dctlreg
| TSI148_LCSR_DCTL_DGO
, bridge
->base
+
1858 TSI148_LCSR_DMA
[channel
] + TSI148_LCSR_OFFSET_DCTL
);
1860 wait_event_interruptible(bridge
->dma_queue
[channel
],
1861 tsi148_dma_busy(ctrlr
->parent
, channel
));
1864 * Read status register, this register is valid until we kick off a
1867 val
= ioread32be(bridge
->base
+ TSI148_LCSR_DMA
[channel
] +
1868 TSI148_LCSR_OFFSET_DSTA
);
1870 if (val
& TSI148_LCSR_DSTA_VBE
) {
1871 dev_err(tsi148_bridge
->parent
, "DMA Error. DSTA=%08X\n", val
);
1875 /* Remove list from running list */
1876 mutex_lock(&ctrlr
->mtx
);
1877 list_del(&list
->list
);
1878 mutex_unlock(&ctrlr
->mtx
);
1884 * Clean up a previously generated link list
1886 * We have a separate function, don't assume that the chain can't be reused.
1888 static int tsi148_dma_list_empty(struct vme_dma_list
*list
)
1890 struct list_head
*pos
, *temp
;
1891 struct tsi148_dma_entry
*entry
;
1893 struct vme_bridge
*tsi148_bridge
= list
->parent
->parent
;
1895 /* detach and free each entry */
1896 list_for_each_safe(pos
, temp
, &list
->entries
) {
1898 entry
= list_entry(pos
, struct tsi148_dma_entry
, list
);
1900 dma_unmap_single(tsi148_bridge
->parent
, entry
->dma_handle
,
1901 sizeof(struct tsi148_dma_descriptor
), DMA_TO_DEVICE
);
1909 * All 4 location monitors reside at the same base - this is therefore a
1910 * system wide configuration.
1912 * This does not enable the LM monitor - that should be done when the first
1913 * callback is attached and disabled when the last callback is removed.
1915 static int tsi148_lm_set(struct vme_lm_resource
*lm
, unsigned long long lm_base
,
1916 u32 aspace
, u32 cycle
)
1918 u32 lm_base_high
, lm_base_low
, lm_ctl
= 0;
1920 struct vme_bridge
*tsi148_bridge
;
1921 struct tsi148_driver
*bridge
;
1923 tsi148_bridge
= lm
->parent
;
1925 bridge
= tsi148_bridge
->driver_priv
;
1927 mutex_lock(&lm
->mtx
);
1929 /* If we already have a callback attached, we can't move it! */
1930 for (i
= 0; i
< lm
->monitors
; i
++) {
1931 if (bridge
->lm_callback
[i
] != NULL
) {
1932 mutex_unlock(&lm
->mtx
);
1933 dev_err(tsi148_bridge
->parent
, "Location monitor "
1934 "callback attached, can't reset\n");
1941 lm_ctl
|= TSI148_LCSR_LMAT_AS_A16
;
1944 lm_ctl
|= TSI148_LCSR_LMAT_AS_A24
;
1947 lm_ctl
|= TSI148_LCSR_LMAT_AS_A32
;
1950 lm_ctl
|= TSI148_LCSR_LMAT_AS_A64
;
1953 mutex_unlock(&lm
->mtx
);
1954 dev_err(tsi148_bridge
->parent
, "Invalid address space\n");
1959 if (cycle
& VME_SUPER
)
1960 lm_ctl
|= TSI148_LCSR_LMAT_SUPR
;
1961 if (cycle
& VME_USER
)
1962 lm_ctl
|= TSI148_LCSR_LMAT_NPRIV
;
1963 if (cycle
& VME_PROG
)
1964 lm_ctl
|= TSI148_LCSR_LMAT_PGM
;
1965 if (cycle
& VME_DATA
)
1966 lm_ctl
|= TSI148_LCSR_LMAT_DATA
;
1968 reg_split(lm_base
, &lm_base_high
, &lm_base_low
);
1970 iowrite32be(lm_base_high
, bridge
->base
+ TSI148_LCSR_LMBAU
);
1971 iowrite32be(lm_base_low
, bridge
->base
+ TSI148_LCSR_LMBAL
);
1972 iowrite32be(lm_ctl
, bridge
->base
+ TSI148_LCSR_LMAT
);
1974 mutex_unlock(&lm
->mtx
);
1979 /* Get configuration of the callback monitor and return whether it is enabled
1982 static int tsi148_lm_get(struct vme_lm_resource
*lm
,
1983 unsigned long long *lm_base
, u32
*aspace
, u32
*cycle
)
1985 u32 lm_base_high
, lm_base_low
, lm_ctl
, enabled
= 0;
1986 struct tsi148_driver
*bridge
;
1988 bridge
= lm
->parent
->driver_priv
;
1990 mutex_lock(&lm
->mtx
);
1992 lm_base_high
= ioread32be(bridge
->base
+ TSI148_LCSR_LMBAU
);
1993 lm_base_low
= ioread32be(bridge
->base
+ TSI148_LCSR_LMBAL
);
1994 lm_ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_LMAT
);
1996 reg_join(lm_base_high
, lm_base_low
, lm_base
);
1998 if (lm_ctl
& TSI148_LCSR_LMAT_EN
)
2001 if ((lm_ctl
& TSI148_LCSR_LMAT_AS_M
) == TSI148_LCSR_LMAT_AS_A16
)
2004 if ((lm_ctl
& TSI148_LCSR_LMAT_AS_M
) == TSI148_LCSR_LMAT_AS_A24
)
2007 if ((lm_ctl
& TSI148_LCSR_LMAT_AS_M
) == TSI148_LCSR_LMAT_AS_A32
)
2010 if ((lm_ctl
& TSI148_LCSR_LMAT_AS_M
) == TSI148_LCSR_LMAT_AS_A64
)
2014 if (lm_ctl
& TSI148_LCSR_LMAT_SUPR
)
2015 *cycle
|= VME_SUPER
;
2016 if (lm_ctl
& TSI148_LCSR_LMAT_NPRIV
)
2018 if (lm_ctl
& TSI148_LCSR_LMAT_PGM
)
2020 if (lm_ctl
& TSI148_LCSR_LMAT_DATA
)
2023 mutex_unlock(&lm
->mtx
);
2029 * Attach a callback to a specific location monitor.
2031 * Callback will be passed the monitor triggered.
2033 static int tsi148_lm_attach(struct vme_lm_resource
*lm
, int monitor
,
2034 void (*callback
)(int))
2037 struct vme_bridge
*tsi148_bridge
;
2038 struct tsi148_driver
*bridge
;
2040 tsi148_bridge
= lm
->parent
;
2042 bridge
= tsi148_bridge
->driver_priv
;
2044 mutex_lock(&lm
->mtx
);
2046 /* Ensure that the location monitor is configured - need PGM or DATA */
2047 lm_ctl
= ioread32be(bridge
->base
+ TSI148_LCSR_LMAT
);
2048 if ((lm_ctl
& (TSI148_LCSR_LMAT_PGM
| TSI148_LCSR_LMAT_DATA
)) == 0) {
2049 mutex_unlock(&lm
->mtx
);
2050 dev_err(tsi148_bridge
->parent
, "Location monitor not properly "
2055 /* Check that a callback isn't already attached */
2056 if (bridge
->lm_callback
[monitor
] != NULL
) {
2057 mutex_unlock(&lm
->mtx
);
2058 dev_err(tsi148_bridge
->parent
, "Existing callback attached\n");
2062 /* Attach callback */
2063 bridge
->lm_callback
[monitor
] = callback
;
2065 /* Enable Location Monitor interrupt */
2066 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEN
);
2067 tmp
|= TSI148_LCSR_INTEN_LMEN
[monitor
];
2068 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEN
);
2070 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEO
);
2071 tmp
|= TSI148_LCSR_INTEO_LMEO
[monitor
];
2072 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEO
);
2074 /* Ensure that global Location Monitor Enable set */
2075 if ((lm_ctl
& TSI148_LCSR_LMAT_EN
) == 0) {
2076 lm_ctl
|= TSI148_LCSR_LMAT_EN
;
2077 iowrite32be(lm_ctl
, bridge
->base
+ TSI148_LCSR_LMAT
);
2080 mutex_unlock(&lm
->mtx
);
2086 * Detach a callback function forn a specific location monitor.
2088 static int tsi148_lm_detach(struct vme_lm_resource
*lm
, int monitor
)
2091 struct tsi148_driver
*bridge
;
2093 bridge
= lm
->parent
->driver_priv
;
2095 mutex_lock(&lm
->mtx
);
2097 /* Disable Location Monitor and ensure previous interrupts are clear */
2098 lm_en
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEN
);
2099 lm_en
&= ~TSI148_LCSR_INTEN_LMEN
[monitor
];
2100 iowrite32be(lm_en
, bridge
->base
+ TSI148_LCSR_INTEN
);
2102 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_INTEO
);
2103 tmp
&= ~TSI148_LCSR_INTEO_LMEO
[monitor
];
2104 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_INTEO
);
2106 iowrite32be(TSI148_LCSR_INTC_LMC
[monitor
],
2107 bridge
->base
+ TSI148_LCSR_INTC
);
2109 /* Detach callback */
2110 bridge
->lm_callback
[monitor
] = NULL
;
2112 /* If all location monitors disabled, disable global Location Monitor */
2113 if ((lm_en
& (TSI148_LCSR_INTS_LM0S
| TSI148_LCSR_INTS_LM1S
|
2114 TSI148_LCSR_INTS_LM2S
| TSI148_LCSR_INTS_LM3S
)) == 0) {
2115 tmp
= ioread32be(bridge
->base
+ TSI148_LCSR_LMAT
);
2116 tmp
&= ~TSI148_LCSR_LMAT_EN
;
2117 iowrite32be(tmp
, bridge
->base
+ TSI148_LCSR_LMAT
);
2120 mutex_unlock(&lm
->mtx
);
2126 * Determine Geographical Addressing
2128 static int tsi148_slot_get(struct vme_bridge
*tsi148_bridge
)
2131 struct tsi148_driver
*bridge
;
2133 bridge
= tsi148_bridge
->driver_priv
;
2136 slot
= ioread32be(bridge
->base
+ TSI148_LCSR_VSTAT
);
2137 slot
= slot
& TSI148_LCSR_VSTAT_GA_M
;
2144 void *tsi148_alloc_consistent(struct device
*parent
, size_t size
,
2147 struct pci_dev
*pdev
;
2149 /* Find pci_dev container of dev */
2150 pdev
= container_of(parent
, struct pci_dev
, dev
);
2152 return pci_alloc_consistent(pdev
, size
, dma
);
2155 void tsi148_free_consistent(struct device
*parent
, size_t size
, void *vaddr
,
2158 struct pci_dev
*pdev
;
2160 /* Find pci_dev container of dev */
2161 pdev
= container_of(parent
, struct pci_dev
, dev
);
2163 pci_free_consistent(pdev
, size
, vaddr
, dma
);
2166 static int __init
tsi148_init(void)
2168 return pci_register_driver(&tsi148_driver
);
2172 * Configure CR/CSR space
2174 * Access to the CR/CSR can be configured at power-up. The location of the
2175 * CR/CSR registers in the CR/CSR address space is determined by the boards
2176 * Auto-ID or Geographic address. This function ensures that the window is
2177 * enabled at an offset consistent with the boards geopgraphic address.
2179 * Each board has a 512kB window, with the highest 4kB being used for the
2180 * boards registers, this means there is a fix length 508kB window which must
2181 * be mapped onto PCI memory.
2183 static int tsi148_crcsr_init(struct vme_bridge
*tsi148_bridge
,
2184 struct pci_dev
*pdev
)
2186 u32 cbar
, crat
, vstat
;
2187 u32 crcsr_bus_high
, crcsr_bus_low
;
2189 struct tsi148_driver
*bridge
;
2191 bridge
= tsi148_bridge
->driver_priv
;
2193 /* Allocate mem for CR/CSR image */
2194 bridge
->crcsr_kernel
= pci_alloc_consistent(pdev
, VME_CRCSR_BUF_SIZE
,
2195 &bridge
->crcsr_bus
);
2196 if (bridge
->crcsr_kernel
== NULL
) {
2197 dev_err(tsi148_bridge
->parent
, "Failed to allocate memory for "
2202 memset(bridge
->crcsr_kernel
, 0, VME_CRCSR_BUF_SIZE
);
2204 reg_split(bridge
->crcsr_bus
, &crcsr_bus_high
, &crcsr_bus_low
);
2206 iowrite32be(crcsr_bus_high
, bridge
->base
+ TSI148_LCSR_CROU
);
2207 iowrite32be(crcsr_bus_low
, bridge
->base
+ TSI148_LCSR_CROL
);
2209 /* Ensure that the CR/CSR is configured at the correct offset */
2210 cbar
= ioread32be(bridge
->base
+ TSI148_CBAR
);
2211 cbar
= (cbar
& TSI148_CRCSR_CBAR_M
)>>3;
2213 vstat
= tsi148_slot_get(tsi148_bridge
);
2215 if (cbar
!= vstat
) {
2217 dev_info(tsi148_bridge
->parent
, "Setting CR/CSR offset\n");
2218 iowrite32be(cbar
<<3, bridge
->base
+ TSI148_CBAR
);
2220 dev_info(tsi148_bridge
->parent
, "CR/CSR Offset: %d\n", cbar
);
2222 crat
= ioread32be(bridge
->base
+ TSI148_LCSR_CRAT
);
2223 if (crat
& TSI148_LCSR_CRAT_EN
) {
2224 dev_info(tsi148_bridge
->parent
, "Enabling CR/CSR space\n");
2225 iowrite32be(crat
| TSI148_LCSR_CRAT_EN
,
2226 bridge
->base
+ TSI148_LCSR_CRAT
);
2228 dev_info(tsi148_bridge
->parent
, "CR/CSR already enabled\n");
2230 /* If we want flushed, error-checked writes, set up a window
2231 * over the CR/CSR registers. We read from here to safely flush
2232 * through VME writes.
2235 retval
= tsi148_master_set(bridge
->flush_image
, 1,
2236 (vstat
* 0x80000), 0x80000, VME_CRCSR
, VME_SCT
,
2239 dev_err(tsi148_bridge
->parent
, "Configuring flush image"
2247 static void tsi148_crcsr_exit(struct vme_bridge
*tsi148_bridge
,
2248 struct pci_dev
*pdev
)
2251 struct tsi148_driver
*bridge
;
2253 bridge
= tsi148_bridge
->driver_priv
;
2255 /* Turn off CR/CSR space */
2256 crat
= ioread32be(bridge
->base
+ TSI148_LCSR_CRAT
);
2257 iowrite32be(crat
& ~TSI148_LCSR_CRAT_EN
,
2258 bridge
->base
+ TSI148_LCSR_CRAT
);
2261 iowrite32be(0, bridge
->base
+ TSI148_LCSR_CROU
);
2262 iowrite32be(0, bridge
->base
+ TSI148_LCSR_CROL
);
2264 pci_free_consistent(pdev
, VME_CRCSR_BUF_SIZE
, bridge
->crcsr_kernel
,
2268 static int tsi148_probe(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
2270 int retval
, i
, master_num
;
2272 struct list_head
*pos
= NULL
;
2273 struct vme_bridge
*tsi148_bridge
;
2274 struct tsi148_driver
*tsi148_device
;
2275 struct vme_master_resource
*master_image
;
2276 struct vme_slave_resource
*slave_image
;
2277 struct vme_dma_resource
*dma_ctrlr
;
2278 struct vme_lm_resource
*lm
;
2280 /* If we want to support more than one of each bridge, we need to
2281 * dynamically generate this so we get one per device
2283 tsi148_bridge
= kzalloc(sizeof(struct vme_bridge
), GFP_KERNEL
);
2284 if (tsi148_bridge
== NULL
) {
2285 dev_err(&pdev
->dev
, "Failed to allocate memory for device "
2291 tsi148_device
= kzalloc(sizeof(struct tsi148_driver
), GFP_KERNEL
);
2292 if (tsi148_device
== NULL
) {
2293 dev_err(&pdev
->dev
, "Failed to allocate memory for device "
2299 tsi148_bridge
->driver_priv
= tsi148_device
;
2301 /* Enable the device */
2302 retval
= pci_enable_device(pdev
);
2304 dev_err(&pdev
->dev
, "Unable to enable device\n");
2309 retval
= pci_request_regions(pdev
, driver_name
);
2311 dev_err(&pdev
->dev
, "Unable to reserve resources\n");
2315 /* map registers in BAR 0 */
2316 tsi148_device
->base
= ioremap_nocache(pci_resource_start(pdev
, 0),
2318 if (!tsi148_device
->base
) {
2319 dev_err(&pdev
->dev
, "Unable to remap CRG region\n");
2324 /* Check to see if the mapping worked out */
2325 data
= ioread32(tsi148_device
->base
+ TSI148_PCFS_ID
) & 0x0000FFFF;
2326 if (data
!= PCI_VENDOR_ID_TUNDRA
) {
2327 dev_err(&pdev
->dev
, "CRG region check failed\n");
2332 /* Initialize wait queues & mutual exclusion flags */
2333 init_waitqueue_head(&tsi148_device
->dma_queue
[0]);
2334 init_waitqueue_head(&tsi148_device
->dma_queue
[1]);
2335 init_waitqueue_head(&tsi148_device
->iack_queue
);
2336 mutex_init(&tsi148_device
->vme_int
);
2337 mutex_init(&tsi148_device
->vme_rmw
);
2339 tsi148_bridge
->parent
= &pdev
->dev
;
2340 strcpy(tsi148_bridge
->name
, driver_name
);
2343 retval
= tsi148_irq_init(tsi148_bridge
);
2345 dev_err(&pdev
->dev
, "Chip Initialization failed.\n");
2349 /* If we are going to flush writes, we need to read from the VME bus.
2350 * We need to do this safely, thus we read the devices own CR/CSR
2351 * register. To do this we must set up a window in CR/CSR space and
2352 * hence have one less master window resource available.
2354 master_num
= TSI148_MAX_MASTER
;
2358 tsi148_device
->flush_image
=
2359 kmalloc(sizeof(struct vme_master_resource
), GFP_KERNEL
);
2360 if (tsi148_device
->flush_image
== NULL
) {
2361 dev_err(&pdev
->dev
, "Failed to allocate memory for "
2362 "flush resource structure\n");
2366 tsi148_device
->flush_image
->parent
= tsi148_bridge
;
2367 spin_lock_init(&tsi148_device
->flush_image
->lock
);
2368 tsi148_device
->flush_image
->locked
= 1;
2369 tsi148_device
->flush_image
->number
= master_num
;
2370 tsi148_device
->flush_image
->address_attr
= VME_A16
| VME_A24
|
2372 tsi148_device
->flush_image
->cycle_attr
= VME_SCT
| VME_BLT
|
2373 VME_MBLT
| VME_2eVME
| VME_2eSST
| VME_2eSSTB
|
2374 VME_2eSST160
| VME_2eSST267
| VME_2eSST320
| VME_SUPER
|
2375 VME_USER
| VME_PROG
| VME_DATA
;
2376 tsi148_device
->flush_image
->width_attr
= VME_D16
| VME_D32
;
2377 memset(&tsi148_device
->flush_image
->bus_resource
, 0,
2378 sizeof(struct resource
));
2379 tsi148_device
->flush_image
->kern_base
= NULL
;
2382 /* Add master windows to list */
2383 INIT_LIST_HEAD(&tsi148_bridge
->master_resources
);
2384 for (i
= 0; i
< master_num
; i
++) {
2385 master_image
= kmalloc(sizeof(struct vme_master_resource
),
2387 if (master_image
== NULL
) {
2388 dev_err(&pdev
->dev
, "Failed to allocate memory for "
2389 "master resource structure\n");
2393 master_image
->parent
= tsi148_bridge
;
2394 spin_lock_init(&master_image
->lock
);
2395 master_image
->locked
= 0;
2396 master_image
->number
= i
;
2397 master_image
->address_attr
= VME_A16
| VME_A24
| VME_A32
|
2399 master_image
->cycle_attr
= VME_SCT
| VME_BLT
| VME_MBLT
|
2400 VME_2eVME
| VME_2eSST
| VME_2eSSTB
| VME_2eSST160
|
2401 VME_2eSST267
| VME_2eSST320
| VME_SUPER
| VME_USER
|
2402 VME_PROG
| VME_DATA
;
2403 master_image
->width_attr
= VME_D16
| VME_D32
;
2404 memset(&master_image
->bus_resource
, 0,
2405 sizeof(struct resource
));
2406 master_image
->kern_base
= NULL
;
2407 list_add_tail(&master_image
->list
,
2408 &tsi148_bridge
->master_resources
);
2411 /* Add slave windows to list */
2412 INIT_LIST_HEAD(&tsi148_bridge
->slave_resources
);
2413 for (i
= 0; i
< TSI148_MAX_SLAVE
; i
++) {
2414 slave_image
= kmalloc(sizeof(struct vme_slave_resource
),
2416 if (slave_image
== NULL
) {
2417 dev_err(&pdev
->dev
, "Failed to allocate memory for "
2418 "slave resource structure\n");
2422 slave_image
->parent
= tsi148_bridge
;
2423 mutex_init(&slave_image
->mtx
);
2424 slave_image
->locked
= 0;
2425 slave_image
->number
= i
;
2426 slave_image
->address_attr
= VME_A16
| VME_A24
| VME_A32
|
2427 VME_A64
| VME_CRCSR
| VME_USER1
| VME_USER2
|
2428 VME_USER3
| VME_USER4
;
2429 slave_image
->cycle_attr
= VME_SCT
| VME_BLT
| VME_MBLT
|
2430 VME_2eVME
| VME_2eSST
| VME_2eSSTB
| VME_2eSST160
|
2431 VME_2eSST267
| VME_2eSST320
| VME_SUPER
| VME_USER
|
2432 VME_PROG
| VME_DATA
;
2433 list_add_tail(&slave_image
->list
,
2434 &tsi148_bridge
->slave_resources
);
2437 /* Add dma engines to list */
2438 INIT_LIST_HEAD(&tsi148_bridge
->dma_resources
);
2439 for (i
= 0; i
< TSI148_MAX_DMA
; i
++) {
2440 dma_ctrlr
= kmalloc(sizeof(struct vme_dma_resource
),
2442 if (dma_ctrlr
== NULL
) {
2443 dev_err(&pdev
->dev
, "Failed to allocate memory for "
2444 "dma resource structure\n");
2448 dma_ctrlr
->parent
= tsi148_bridge
;
2449 mutex_init(&dma_ctrlr
->mtx
);
2450 dma_ctrlr
->locked
= 0;
2451 dma_ctrlr
->number
= i
;
2452 dma_ctrlr
->route_attr
= VME_DMA_VME_TO_MEM
|
2453 VME_DMA_MEM_TO_VME
| VME_DMA_VME_TO_VME
|
2454 VME_DMA_MEM_TO_MEM
| VME_DMA_PATTERN_TO_VME
|
2455 VME_DMA_PATTERN_TO_MEM
;
2456 INIT_LIST_HEAD(&dma_ctrlr
->pending
);
2457 INIT_LIST_HEAD(&dma_ctrlr
->running
);
2458 list_add_tail(&dma_ctrlr
->list
,
2459 &tsi148_bridge
->dma_resources
);
2462 /* Add location monitor to list */
2463 INIT_LIST_HEAD(&tsi148_bridge
->lm_resources
);
2464 lm
= kmalloc(sizeof(struct vme_lm_resource
), GFP_KERNEL
);
2466 dev_err(&pdev
->dev
, "Failed to allocate memory for "
2467 "location monitor resource structure\n");
2471 lm
->parent
= tsi148_bridge
;
2472 mutex_init(&lm
->mtx
);
2476 list_add_tail(&lm
->list
, &tsi148_bridge
->lm_resources
);
2478 tsi148_bridge
->slave_get
= tsi148_slave_get
;
2479 tsi148_bridge
->slave_set
= tsi148_slave_set
;
2480 tsi148_bridge
->master_get
= tsi148_master_get
;
2481 tsi148_bridge
->master_set
= tsi148_master_set
;
2482 tsi148_bridge
->master_read
= tsi148_master_read
;
2483 tsi148_bridge
->master_write
= tsi148_master_write
;
2484 tsi148_bridge
->master_rmw
= tsi148_master_rmw
;
2485 tsi148_bridge
->dma_list_add
= tsi148_dma_list_add
;
2486 tsi148_bridge
->dma_list_exec
= tsi148_dma_list_exec
;
2487 tsi148_bridge
->dma_list_empty
= tsi148_dma_list_empty
;
2488 tsi148_bridge
->irq_set
= tsi148_irq_set
;
2489 tsi148_bridge
->irq_generate
= tsi148_irq_generate
;
2490 tsi148_bridge
->lm_set
= tsi148_lm_set
;
2491 tsi148_bridge
->lm_get
= tsi148_lm_get
;
2492 tsi148_bridge
->lm_attach
= tsi148_lm_attach
;
2493 tsi148_bridge
->lm_detach
= tsi148_lm_detach
;
2494 tsi148_bridge
->slot_get
= tsi148_slot_get
;
2495 tsi148_bridge
->alloc_consistent
= tsi148_alloc_consistent
;
2496 tsi148_bridge
->free_consistent
= tsi148_free_consistent
;
2498 data
= ioread32be(tsi148_device
->base
+ TSI148_LCSR_VSTAT
);
2499 dev_info(&pdev
->dev
, "Board is%s the VME system controller\n",
2500 (data
& TSI148_LCSR_VSTAT_SCONS
) ? "" : " not");
2502 dev_info(&pdev
->dev
, "VME geographical address is %d\n",
2503 data
& TSI148_LCSR_VSTAT_GA_M
);
2505 dev_info(&pdev
->dev
, "VME geographical address is set to %d\n",
2508 dev_info(&pdev
->dev
, "VME Write and flush and error check is %s\n",
2509 err_chk
? "enabled" : "disabled");
2511 if (tsi148_crcsr_init(tsi148_bridge
, pdev
)) {
2512 dev_err(&pdev
->dev
, "CR/CSR configuration failed.\n");
2516 retval
= vme_register_bridge(tsi148_bridge
);
2518 dev_err(&pdev
->dev
, "Chip Registration failed.\n");
2522 pci_set_drvdata(pdev
, tsi148_bridge
);
2524 /* Clear VME bus "board fail", and "power-up reset" lines */
2525 data
= ioread32be(tsi148_device
->base
+ TSI148_LCSR_VSTAT
);
2526 data
&= ~TSI148_LCSR_VSTAT_BRDFL
;
2527 data
|= TSI148_LCSR_VSTAT_CPURST
;
2528 iowrite32be(data
, tsi148_device
->base
+ TSI148_LCSR_VSTAT
);
2533 tsi148_crcsr_exit(tsi148_bridge
, pdev
);
2536 /* resources are stored in link list */
2537 list_for_each(pos
, &tsi148_bridge
->lm_resources
) {
2538 lm
= list_entry(pos
, struct vme_lm_resource
, list
);
2543 /* resources are stored in link list */
2544 list_for_each(pos
, &tsi148_bridge
->dma_resources
) {
2545 dma_ctrlr
= list_entry(pos
, struct vme_dma_resource
, list
);
2550 /* resources are stored in link list */
2551 list_for_each(pos
, &tsi148_bridge
->slave_resources
) {
2552 slave_image
= list_entry(pos
, struct vme_slave_resource
, list
);
2557 /* resources are stored in link list */
2558 list_for_each(pos
, &tsi148_bridge
->master_resources
) {
2559 master_image
= list_entry(pos
, struct vme_master_resource
,
2562 kfree(master_image
);
2565 tsi148_irq_exit(tsi148_bridge
, pdev
);
2568 iounmap(tsi148_device
->base
);
2570 pci_release_regions(pdev
);
2572 pci_disable_device(pdev
);
2574 kfree(tsi148_device
);
2576 kfree(tsi148_bridge
);
2582 static void tsi148_remove(struct pci_dev
*pdev
)
2584 struct list_head
*pos
= NULL
;
2585 struct list_head
*tmplist
;
2586 struct vme_master_resource
*master_image
;
2587 struct vme_slave_resource
*slave_image
;
2588 struct vme_dma_resource
*dma_ctrlr
;
2590 struct tsi148_driver
*bridge
;
2591 struct vme_bridge
*tsi148_bridge
= pci_get_drvdata(pdev
);
2593 bridge
= tsi148_bridge
->driver_priv
;
2596 dev_dbg(&pdev
->dev
, "Driver is being unloaded.\n");
2599 * Shutdown all inbound and outbound windows.
2601 for (i
= 0; i
< 8; i
++) {
2602 iowrite32be(0, bridge
->base
+ TSI148_LCSR_IT
[i
] +
2603 TSI148_LCSR_OFFSET_ITAT
);
2604 iowrite32be(0, bridge
->base
+ TSI148_LCSR_OT
[i
] +
2605 TSI148_LCSR_OFFSET_OTAT
);
2609 * Shutdown Location monitor.
2611 iowrite32be(0, bridge
->base
+ TSI148_LCSR_LMAT
);
2616 iowrite32be(0, bridge
->base
+ TSI148_LCSR_CSRAT
);
2619 * Clear error status.
2621 iowrite32be(0xFFFFFFFF, bridge
->base
+ TSI148_LCSR_EDPAT
);
2622 iowrite32be(0xFFFFFFFF, bridge
->base
+ TSI148_LCSR_VEAT
);
2623 iowrite32be(0x07000700, bridge
->base
+ TSI148_LCSR_PSTAT
);
2626 * Remove VIRQ interrupt (if any)
2628 if (ioread32be(bridge
->base
+ TSI148_LCSR_VICR
) & 0x800)
2629 iowrite32be(0x8000, bridge
->base
+ TSI148_LCSR_VICR
);
2632 * Map all Interrupts to PCI INTA
2634 iowrite32be(0x0, bridge
->base
+ TSI148_LCSR_INTM1
);
2635 iowrite32be(0x0, bridge
->base
+ TSI148_LCSR_INTM2
);
2637 tsi148_irq_exit(tsi148_bridge
, pdev
);
2639 vme_unregister_bridge(tsi148_bridge
);
2641 tsi148_crcsr_exit(tsi148_bridge
, pdev
);
2643 /* resources are stored in link list */
2644 list_for_each_safe(pos
, tmplist
, &tsi148_bridge
->dma_resources
) {
2645 dma_ctrlr
= list_entry(pos
, struct vme_dma_resource
, list
);
2650 /* resources are stored in link list */
2651 list_for_each_safe(pos
, tmplist
, &tsi148_bridge
->slave_resources
) {
2652 slave_image
= list_entry(pos
, struct vme_slave_resource
, list
);
2657 /* resources are stored in link list */
2658 list_for_each_safe(pos
, tmplist
, &tsi148_bridge
->master_resources
) {
2659 master_image
= list_entry(pos
, struct vme_master_resource
,
2662 kfree(master_image
);
2665 iounmap(bridge
->base
);
2667 pci_release_regions(pdev
);
2669 pci_disable_device(pdev
);
2671 kfree(tsi148_bridge
->driver_priv
);
2673 kfree(tsi148_bridge
);
2676 static void __exit
tsi148_exit(void)
2678 pci_unregister_driver(&tsi148_driver
);
2681 MODULE_PARM_DESC(err_chk
, "Check for VME errors on reads and writes");
2682 module_param(err_chk
, bool, 0);
2684 MODULE_PARM_DESC(geoid
, "Override geographical addressing");
2685 module_param(geoid
, int, 0);
2687 MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
2688 MODULE_LICENSE("GPL");
2690 module_init(tsi148_init
);
2691 module_exit(tsi148_exit
);