Commit | Line | Data |
---|---|---|
d22b8ed9 MW |
1 | /* |
2 | * Support for the Tundra TSI148 VME-PCI Bridge Chip | |
3 | * | |
66bd8db5 MW |
4 | * Author: Martyn Welch <martyn.welch@ge.com> |
5 | * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc. | |
d22b8ed9 MW |
6 | * |
7 | * Based on work by Tom Armistead and Ajit Prem | |
8 | * Copyright 2004 Motorola Inc. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | */ | |
15 | ||
d22b8ed9 MW |
16 | #include <linux/module.h> |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/mm.h> | |
19 | #include <linux/types.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/proc_fs.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/poll.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/spinlock.h> | |
6af783c8 | 27 | #include <linux/sched.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
7946328f MW |
29 | #include <linux/time.h> |
30 | #include <linux/io.h> | |
31 | #include <linux/uaccess.h> | |
ac1a4f2c | 32 | #include <linux/byteorder/generic.h> |
db3b9e99 | 33 | #include <linux/vme.h> |
d22b8ed9 | 34 | |
d22b8ed9 MW |
35 | #include "../vme_bridge.h" |
36 | #include "vme_tsi148.h" | |
37 | ||
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); | |
42 | ||
43 | ||
29848ac9 | 44 | /* Module parameter */ |
90ab5ee9 | 45 | static bool err_chk; |
638f199d | 46 | static int geoid; |
d22b8ed9 | 47 | |
584721ca | 48 | static const char driver_name[] = "vme_tsi148"; |
d22b8ed9 | 49 | |
270b64bb | 50 | static DEFINE_PCI_DEVICE_TABLE(tsi148_ids) = { |
d22b8ed9 MW |
51 | { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) }, |
52 | { }, | |
53 | }; | |
54 | ||
55 | static struct pci_driver tsi148_driver = { | |
56 | .name = driver_name, | |
57 | .id_table = tsi148_ids, | |
58 | .probe = tsi148_probe, | |
59 | .remove = tsi148_remove, | |
60 | }; | |
61 | ||
62 | static void reg_join(unsigned int high, unsigned int low, | |
63 | unsigned long long *variable) | |
64 | { | |
65 | *variable = (unsigned long long)high << 32; | |
66 | *variable |= (unsigned long long)low; | |
67 | } | |
68 | ||
69 | static void reg_split(unsigned long long variable, unsigned int *high, | |
70 | unsigned int *low) | |
71 | { | |
72 | *low = (unsigned int)variable & 0xFFFFFFFF; | |
73 | *high = (unsigned int)(variable >> 32); | |
74 | } | |
75 | ||
76 | /* | |
77 | * Wakes up DMA queue. | |
78 | */ | |
29848ac9 MW |
79 | static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge, |
80 | int channel_mask) | |
d22b8ed9 MW |
81 | { |
82 | u32 serviced = 0; | |
83 | ||
84 | if (channel_mask & TSI148_LCSR_INTS_DMA0S) { | |
886953e9 | 85 | wake_up(&bridge->dma_queue[0]); |
d22b8ed9 MW |
86 | serviced |= TSI148_LCSR_INTC_DMA0C; |
87 | } | |
88 | if (channel_mask & TSI148_LCSR_INTS_DMA1S) { | |
886953e9 | 89 | wake_up(&bridge->dma_queue[1]); |
d22b8ed9 MW |
90 | serviced |= TSI148_LCSR_INTC_DMA1C; |
91 | } | |
92 | ||
93 | return serviced; | |
94 | } | |
95 | ||
96 | /* | |
97 | * Wake up location monitor queue | |
98 | */ | |
29848ac9 | 99 | static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat) |
d22b8ed9 MW |
100 | { |
101 | int i; | |
102 | u32 serviced = 0; | |
103 | ||
104 | for (i = 0; i < 4; i++) { | |
7946328f | 105 | if (stat & TSI148_LCSR_INTS_LMS[i]) { |
d22b8ed9 | 106 | /* We only enable interrupts if the callback is set */ |
29848ac9 | 107 | bridge->lm_callback[i](i); |
d22b8ed9 MW |
108 | serviced |= TSI148_LCSR_INTC_LMC[i]; |
109 | } | |
110 | } | |
111 | ||
112 | return serviced; | |
113 | } | |
114 | ||
115 | /* | |
116 | * Wake up mail box queue. | |
117 | * | |
118 | * XXX This functionality is not exposed up though API. | |
119 | */ | |
48d9356e | 120 | static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat) |
d22b8ed9 MW |
121 | { |
122 | int i; | |
123 | u32 val; | |
124 | u32 serviced = 0; | |
48d9356e MW |
125 | struct tsi148_driver *bridge; |
126 | ||
127 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
128 | |
129 | for (i = 0; i < 4; i++) { | |
7946328f | 130 | if (stat & TSI148_LCSR_INTS_MBS[i]) { |
29848ac9 | 131 | val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]); |
48d9356e MW |
132 | dev_err(tsi148_bridge->parent, "VME Mailbox %d received" |
133 | ": 0x%x\n", i, val); | |
d22b8ed9 MW |
134 | serviced |= TSI148_LCSR_INTC_MBC[i]; |
135 | } | |
136 | } | |
137 | ||
138 | return serviced; | |
139 | } | |
140 | ||
141 | /* | |
142 | * Display error & status message when PERR (PCI) exception interrupt occurs. | |
143 | */ | |
48d9356e | 144 | static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge) |
d22b8ed9 | 145 | { |
48d9356e MW |
146 | struct tsi148_driver *bridge; |
147 | ||
148 | bridge = tsi148_bridge->driver_priv; | |
149 | ||
150 | dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, " | |
151 | "attributes: %08x\n", | |
29848ac9 MW |
152 | ioread32be(bridge->base + TSI148_LCSR_EDPAU), |
153 | ioread32be(bridge->base + TSI148_LCSR_EDPAL), | |
48d9356e MW |
154 | ioread32be(bridge->base + TSI148_LCSR_EDPAT)); |
155 | ||
156 | dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split " | |
157 | "completion reg: %08x\n", | |
29848ac9 | 158 | ioread32be(bridge->base + TSI148_LCSR_EDPXA), |
48d9356e | 159 | ioread32be(bridge->base + TSI148_LCSR_EDPXS)); |
d22b8ed9 | 160 | |
29848ac9 | 161 | iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT); |
d22b8ed9 MW |
162 | |
163 | return TSI148_LCSR_INTC_PERRC; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Save address and status when VME error interrupt occurs. | |
168 | */ | |
29848ac9 | 169 | static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge) |
d22b8ed9 MW |
170 | { |
171 | unsigned int error_addr_high, error_addr_low; | |
172 | unsigned long long error_addr; | |
173 | u32 error_attrib; | |
174 | struct vme_bus_error *error; | |
29848ac9 MW |
175 | struct tsi148_driver *bridge; |
176 | ||
177 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 178 | |
29848ac9 MW |
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); | |
d22b8ed9 MW |
182 | |
183 | reg_join(error_addr_high, error_addr_low, &error_addr); | |
184 | ||
185 | /* Check for exception register overflow (we have lost error data) */ | |
7946328f | 186 | if (error_attrib & TSI148_LCSR_VEAT_VEOF) { |
48d9356e MW |
187 | dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow " |
188 | "Occurred\n"); | |
d22b8ed9 MW |
189 | } |
190 | ||
7946328f | 191 | error = kmalloc(sizeof(struct vme_bus_error), GFP_ATOMIC); |
d22b8ed9 MW |
192 | if (error) { |
193 | error->address = error_addr; | |
194 | error->attributes = error_attrib; | |
886953e9 | 195 | list_add_tail(&error->list, &tsi148_bridge->vme_errors); |
d22b8ed9 | 196 | } else { |
48d9356e MW |
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); | |
d22b8ed9 MW |
201 | } |
202 | ||
203 | /* Clear Status */ | |
29848ac9 | 204 | iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT); |
d22b8ed9 MW |
205 | |
206 | return TSI148_LCSR_INTC_VERRC; | |
207 | } | |
208 | ||
209 | /* | |
210 | * Wake up IACK queue. | |
211 | */ | |
29848ac9 | 212 | static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge) |
d22b8ed9 | 213 | { |
886953e9 | 214 | wake_up(&bridge->iack_queue); |
d22b8ed9 MW |
215 | |
216 | return TSI148_LCSR_INTC_IACKC; | |
217 | } | |
218 | ||
219 | /* | |
220 | * Calling VME bus interrupt callback if provided. | |
221 | */ | |
29848ac9 MW |
222 | static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge, |
223 | u32 stat) | |
d22b8ed9 MW |
224 | { |
225 | int vec, i, serviced = 0; | |
29848ac9 MW |
226 | struct tsi148_driver *bridge; |
227 | ||
228 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
229 | |
230 | for (i = 7; i > 0; i--) { | |
231 | if (stat & (1 << i)) { | |
232 | /* | |
7946328f MW |
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. | |
d22b8ed9 | 236 | */ |
29848ac9 | 237 | vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3); |
d22b8ed9 | 238 | |
c813f592 | 239 | vme_irq_handler(tsi148_bridge, i, vec); |
d22b8ed9 MW |
240 | |
241 | serviced |= (1 << i); | |
242 | } | |
243 | } | |
244 | ||
245 | return serviced; | |
246 | } | |
247 | ||
248 | /* | |
249 | * Top level interrupt handler. Clears appropriate interrupt status bits and | |
250 | * then calls appropriate sub handler(s). | |
251 | */ | |
29848ac9 | 252 | static irqreturn_t tsi148_irqhandler(int irq, void *ptr) |
d22b8ed9 MW |
253 | { |
254 | u32 stat, enable, serviced = 0; | |
29848ac9 MW |
255 | struct vme_bridge *tsi148_bridge; |
256 | struct tsi148_driver *bridge; | |
257 | ||
258 | tsi148_bridge = ptr; | |
259 | ||
260 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
261 | |
262 | /* Determine which interrupts are unmasked and set */ | |
29848ac9 MW |
263 | enable = ioread32be(bridge->base + TSI148_LCSR_INTEO); |
264 | stat = ioread32be(bridge->base + TSI148_LCSR_INTS); | |
d22b8ed9 MW |
265 | |
266 | /* Only look at unmasked interrupts */ | |
267 | stat &= enable; | |
268 | ||
7946328f | 269 | if (unlikely(!stat)) |
d22b8ed9 | 270 | return IRQ_NONE; |
d22b8ed9 MW |
271 | |
272 | /* Call subhandlers as appropriate */ | |
273 | /* DMA irqs */ | |
274 | if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S)) | |
29848ac9 | 275 | serviced |= tsi148_DMA_irqhandler(bridge, stat); |
d22b8ed9 MW |
276 | |
277 | /* Location monitor irqs */ | |
278 | if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S | | |
279 | TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S)) | |
29848ac9 | 280 | serviced |= tsi148_LM_irqhandler(bridge, stat); |
d22b8ed9 MW |
281 | |
282 | /* Mail box irqs */ | |
283 | if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S | | |
284 | TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S)) | |
48d9356e | 285 | serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat); |
d22b8ed9 MW |
286 | |
287 | /* PCI bus error */ | |
288 | if (stat & TSI148_LCSR_INTS_PERRS) | |
48d9356e | 289 | serviced |= tsi148_PERR_irqhandler(tsi148_bridge); |
d22b8ed9 MW |
290 | |
291 | /* VME bus error */ | |
292 | if (stat & TSI148_LCSR_INTS_VERRS) | |
29848ac9 | 293 | serviced |= tsi148_VERR_irqhandler(tsi148_bridge); |
d22b8ed9 MW |
294 | |
295 | /* IACK irq */ | |
296 | if (stat & TSI148_LCSR_INTS_IACKS) | |
29848ac9 | 297 | serviced |= tsi148_IACK_irqhandler(bridge); |
d22b8ed9 MW |
298 | |
299 | /* VME bus irqs */ | |
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)) | |
29848ac9 | 304 | serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat); |
d22b8ed9 MW |
305 | |
306 | /* Clear serviced interrupts */ | |
29848ac9 | 307 | iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC); |
d22b8ed9 MW |
308 | |
309 | return IRQ_HANDLED; | |
310 | } | |
311 | ||
29848ac9 | 312 | static int tsi148_irq_init(struct vme_bridge *tsi148_bridge) |
d22b8ed9 MW |
313 | { |
314 | int result; | |
315 | unsigned int tmp; | |
316 | struct pci_dev *pdev; | |
29848ac9 MW |
317 | struct tsi148_driver *bridge; |
318 | ||
319 | pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev); | |
d22b8ed9 | 320 | |
29848ac9 | 321 | bridge = tsi148_bridge->driver_priv; |
d22b8ed9 MW |
322 | |
323 | /* Initialise list for VME bus errors */ | |
886953e9 | 324 | INIT_LIST_HEAD(&tsi148_bridge->vme_errors); |
d22b8ed9 | 325 | |
886953e9 | 326 | mutex_init(&tsi148_bridge->irq_mtx); |
c813f592 | 327 | |
d22b8ed9 MW |
328 | result = request_irq(pdev->irq, |
329 | tsi148_irqhandler, | |
330 | IRQF_SHARED, | |
29848ac9 | 331 | driver_name, tsi148_bridge); |
d22b8ed9 | 332 | if (result) { |
48d9356e MW |
333 | dev_err(tsi148_bridge->parent, "Can't get assigned pci irq " |
334 | "vector %02X\n", pdev->irq); | |
d22b8ed9 MW |
335 | return result; |
336 | } | |
337 | ||
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; | |
344 | ||
29848ac9 | 345 | /* This leaves the following interrupts masked. |
d22b8ed9 MW |
346 | * TSI148_LCSR_INTEO_VIEEO |
347 | * TSI148_LCSR_INTEO_SYSFLEO | |
348 | * TSI148_LCSR_INTEO_ACFLEO | |
349 | */ | |
350 | ||
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 | |
358 | */ | |
359 | ||
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 | |
370 | */ | |
371 | ||
372 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO); | |
373 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN); | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
a82ad05e EC |
378 | static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge, |
379 | struct pci_dev *pdev) | |
d22b8ed9 | 380 | { |
a82ad05e EC |
381 | struct tsi148_driver *bridge = tsi148_bridge->driver_priv; |
382 | ||
d22b8ed9 | 383 | /* Turn off interrupts */ |
29848ac9 MW |
384 | iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO); |
385 | iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN); | |
d22b8ed9 MW |
386 | |
387 | /* Clear all interrupts */ | |
29848ac9 | 388 | iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC); |
d22b8ed9 MW |
389 | |
390 | /* Detach interrupt handler */ | |
a82ad05e | 391 | free_irq(pdev->irq, tsi148_bridge); |
d22b8ed9 MW |
392 | } |
393 | ||
394 | /* | |
395 | * Check to see if an IACk has been received, return true (1) or false (0). | |
396 | */ | |
5ade6c4d | 397 | static int tsi148_iack_received(struct tsi148_driver *bridge) |
d22b8ed9 MW |
398 | { |
399 | u32 tmp; | |
400 | ||
29848ac9 | 401 | tmp = ioread32be(bridge->base + TSI148_LCSR_VICR); |
d22b8ed9 MW |
402 | |
403 | if (tmp & TSI148_LCSR_VICR_IRQS) | |
404 | return 0; | |
405 | else | |
406 | return 1; | |
407 | } | |
408 | ||
409 | /* | |
c813f592 | 410 | * Configure VME interrupt |
d22b8ed9 | 411 | */ |
5ade6c4d | 412 | static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level, |
29848ac9 | 413 | int state, int sync) |
d22b8ed9 | 414 | { |
75155020 | 415 | struct pci_dev *pdev; |
c813f592 | 416 | u32 tmp; |
29848ac9 MW |
417 | struct tsi148_driver *bridge; |
418 | ||
419 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 420 | |
c813f592 MW |
421 | /* We need to do the ordering differently for enabling and disabling */ |
422 | if (state == 0) { | |
29848ac9 | 423 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN); |
d22b8ed9 | 424 | tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1]; |
29848ac9 | 425 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN); |
df455175 | 426 | |
29848ac9 | 427 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO); |
df455175 | 428 | tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1]; |
29848ac9 | 429 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO); |
75155020 | 430 | |
c813f592 MW |
431 | if (sync != 0) { |
432 | pdev = container_of(tsi148_bridge->parent, | |
433 | struct pci_dev, dev); | |
75155020 | 434 | |
c813f592 MW |
435 | synchronize_irq(pdev->irq); |
436 | } | |
437 | } else { | |
29848ac9 | 438 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO); |
c813f592 | 439 | tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1]; |
29848ac9 | 440 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO); |
df455175 | 441 | |
29848ac9 | 442 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN); |
c813f592 | 443 | tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1]; |
29848ac9 | 444 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN); |
c813f592 | 445 | } |
d22b8ed9 MW |
446 | } |
447 | ||
448 | /* | |
449 | * Generate a VME bus interrupt at the requested level & vector. Wait for | |
450 | * interrupt to be acked. | |
d22b8ed9 | 451 | */ |
5ade6c4d EC |
452 | static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level, |
453 | int statid) | |
d22b8ed9 MW |
454 | { |
455 | u32 tmp; | |
29848ac9 MW |
456 | struct tsi148_driver *bridge; |
457 | ||
458 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 459 | |
886953e9 | 460 | mutex_lock(&bridge->vme_int); |
d22b8ed9 MW |
461 | |
462 | /* Read VICR register */ | |
29848ac9 | 463 | tmp = ioread32be(bridge->base + TSI148_LCSR_VICR); |
d22b8ed9 MW |
464 | |
465 | /* Set Status/ID */ | |
466 | tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) | | |
467 | (statid & TSI148_LCSR_VICR_STID_M); | |
29848ac9 | 468 | iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR); |
d22b8ed9 MW |
469 | |
470 | /* Assert VMEbus IRQ */ | |
471 | tmp = tmp | TSI148_LCSR_VICR_IRQL[level]; | |
29848ac9 | 472 | iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR); |
d22b8ed9 MW |
473 | |
474 | /* XXX Consider implementing a timeout? */ | |
29848ac9 MW |
475 | wait_event_interruptible(bridge->iack_queue, |
476 | tsi148_iack_received(bridge)); | |
d22b8ed9 | 477 | |
886953e9 | 478 | mutex_unlock(&bridge->vme_int); |
d22b8ed9 MW |
479 | |
480 | return 0; | |
481 | } | |
482 | ||
483 | /* | |
484 | * Find the first error in this address range | |
485 | */ | |
29848ac9 | 486 | static struct vme_bus_error *tsi148_find_error(struct vme_bridge *tsi148_bridge, |
6af04b06 | 487 | u32 aspace, unsigned long long address, size_t count) |
d22b8ed9 MW |
488 | { |
489 | struct list_head *err_pos; | |
490 | struct vme_bus_error *vme_err, *valid = NULL; | |
491 | unsigned long long bound; | |
492 | ||
493 | bound = address + count; | |
494 | ||
495 | /* | |
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. | |
501 | */ | |
502 | err_pos = NULL; | |
503 | /* Iterate through errors */ | |
886953e9 | 504 | list_for_each(err_pos, &tsi148_bridge->vme_errors) { |
d22b8ed9 | 505 | vme_err = list_entry(err_pos, struct vme_bus_error, list); |
7946328f MW |
506 | if ((vme_err->address >= address) && |
507 | (vme_err->address < bound)) { | |
508 | ||
d22b8ed9 MW |
509 | valid = vme_err; |
510 | break; | |
511 | } | |
512 | } | |
513 | ||
514 | return valid; | |
515 | } | |
516 | ||
517 | /* | |
518 | * Clear errors in the provided address range. | |
519 | */ | |
29848ac9 | 520 | static void tsi148_clear_errors(struct vme_bridge *tsi148_bridge, |
6af04b06 | 521 | u32 aspace, unsigned long long address, size_t count) |
d22b8ed9 MW |
522 | { |
523 | struct list_head *err_pos, *temp; | |
524 | struct vme_bus_error *vme_err; | |
525 | unsigned long long bound; | |
526 | ||
527 | bound = address + count; | |
528 | ||
529 | /* | |
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. | |
535 | */ | |
536 | err_pos = NULL; | |
537 | /* Iterate through errors */ | |
886953e9 | 538 | list_for_each_safe(err_pos, temp, &tsi148_bridge->vme_errors) { |
d22b8ed9 MW |
539 | vme_err = list_entry(err_pos, struct vme_bus_error, list); |
540 | ||
7946328f MW |
541 | if ((vme_err->address >= address) && |
542 | (vme_err->address < bound)) { | |
543 | ||
d22b8ed9 MW |
544 | list_del(err_pos); |
545 | kfree(vme_err); | |
546 | } | |
547 | } | |
548 | } | |
549 | ||
550 | /* | |
551 | * Initialize a slave window with the requested attributes. | |
552 | */ | |
5ade6c4d | 553 | static int tsi148_slave_set(struct vme_slave_resource *image, int enabled, |
d22b8ed9 | 554 | unsigned long long vme_base, unsigned long long size, |
6af04b06 | 555 | dma_addr_t pci_base, u32 aspace, u32 cycle) |
d22b8ed9 MW |
556 | { |
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; | |
48d9356e | 563 | struct vme_bridge *tsi148_bridge; |
29848ac9 MW |
564 | struct tsi148_driver *bridge; |
565 | ||
48d9356e MW |
566 | tsi148_bridge = image->parent; |
567 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 568 | |
d22b8ed9 MW |
569 | i = image->number; |
570 | ||
571 | switch (aspace) { | |
572 | case VME_A16: | |
573 | granularity = 0x10; | |
574 | addr |= TSI148_LCSR_ITAT_AS_A16; | |
575 | break; | |
576 | case VME_A24: | |
577 | granularity = 0x1000; | |
578 | addr |= TSI148_LCSR_ITAT_AS_A24; | |
579 | break; | |
580 | case VME_A32: | |
581 | granularity = 0x10000; | |
582 | addr |= TSI148_LCSR_ITAT_AS_A32; | |
583 | break; | |
584 | case VME_A64: | |
585 | granularity = 0x10000; | |
586 | addr |= TSI148_LCSR_ITAT_AS_A64; | |
587 | break; | |
588 | case VME_CRCSR: | |
589 | case VME_USER1: | |
590 | case VME_USER2: | |
591 | case VME_USER3: | |
592 | case VME_USER4: | |
593 | default: | |
48d9356e | 594 | dev_err(tsi148_bridge->parent, "Invalid address space\n"); |
d22b8ed9 MW |
595 | return -EINVAL; |
596 | break; | |
597 | } | |
598 | ||
599 | /* Convert 64-bit variables to 2x 32-bit variables */ | |
600 | reg_split(vme_base, &vme_base_high, &vme_base_low); | |
601 | ||
602 | /* | |
603 | * Bound address is a valid address for the window, adjust | |
604 | * accordingly | |
605 | */ | |
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); | |
610 | ||
611 | if (vme_base_low & (granularity - 1)) { | |
48d9356e | 612 | dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n"); |
d22b8ed9 MW |
613 | return -EINVAL; |
614 | } | |
615 | if (vme_bound_low & (granularity - 1)) { | |
48d9356e | 616 | dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n"); |
d22b8ed9 MW |
617 | return -EINVAL; |
618 | } | |
619 | if (pci_offset_low & (granularity - 1)) { | |
48d9356e MW |
620 | dev_err(tsi148_bridge->parent, "Invalid PCI Offset " |
621 | "alignment\n"); | |
d22b8ed9 MW |
622 | return -EINVAL; |
623 | } | |
624 | ||
d22b8ed9 | 625 | /* Disable while we are mucking around */ |
29848ac9 | 626 | temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
627 | TSI148_LCSR_OFFSET_ITAT); |
628 | temp_ctl &= ~TSI148_LCSR_ITAT_EN; | |
29848ac9 | 629 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
630 | TSI148_LCSR_OFFSET_ITAT); |
631 | ||
632 | /* Setup mapping */ | |
29848ac9 | 633 | iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 634 | TSI148_LCSR_OFFSET_ITSAU); |
29848ac9 | 635 | iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 636 | TSI148_LCSR_OFFSET_ITSAL); |
29848ac9 | 637 | iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 638 | TSI148_LCSR_OFFSET_ITEAU); |
29848ac9 | 639 | iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 640 | TSI148_LCSR_OFFSET_ITEAL); |
29848ac9 | 641 | iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 642 | TSI148_LCSR_OFFSET_ITOFU); |
29848ac9 | 643 | iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
644 | TSI148_LCSR_OFFSET_ITOFL); |
645 | ||
d22b8ed9 MW |
646 | /* Setup 2eSST speeds */ |
647 | temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M; | |
648 | switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) { | |
649 | case VME_2eSST160: | |
650 | temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160; | |
651 | break; | |
652 | case VME_2eSST267: | |
653 | temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267; | |
654 | break; | |
655 | case VME_2eSST320: | |
656 | temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320; | |
657 | break; | |
658 | } | |
659 | ||
660 | /* Setup cycle types */ | |
661 | temp_ctl &= ~(0x1F << 7); | |
662 | if (cycle & VME_BLT) | |
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; | |
672 | ||
673 | /* Setup address space */ | |
674 | temp_ctl &= ~TSI148_LCSR_ITAT_AS_M; | |
675 | temp_ctl |= addr; | |
676 | ||
677 | temp_ctl &= ~0xF; | |
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; | |
686 | ||
687 | /* Write ctl reg without enable */ | |
29848ac9 | 688 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
689 | TSI148_LCSR_OFFSET_ITAT); |
690 | ||
691 | if (enabled) | |
692 | temp_ctl |= TSI148_LCSR_ITAT_EN; | |
693 | ||
29848ac9 | 694 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
695 | TSI148_LCSR_OFFSET_ITAT); |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | /* | |
701 | * Get slave window configuration. | |
d22b8ed9 | 702 | */ |
5ade6c4d | 703 | static int tsi148_slave_get(struct vme_slave_resource *image, int *enabled, |
d22b8ed9 | 704 | unsigned long long *vme_base, unsigned long long *size, |
6af04b06 | 705 | dma_addr_t *pci_base, u32 *aspace, u32 *cycle) |
d22b8ed9 MW |
706 | { |
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; | |
29848ac9 | 712 | struct tsi148_driver *bridge; |
d22b8ed9 | 713 | |
29848ac9 | 714 | bridge = image->parent->driver_priv; |
d22b8ed9 MW |
715 | |
716 | i = image->number; | |
717 | ||
718 | /* Read registers */ | |
29848ac9 | 719 | ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
720 | TSI148_LCSR_OFFSET_ITAT); |
721 | ||
29848ac9 | 722 | vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 723 | TSI148_LCSR_OFFSET_ITSAU); |
29848ac9 | 724 | vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 725 | TSI148_LCSR_OFFSET_ITSAL); |
29848ac9 | 726 | vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 727 | TSI148_LCSR_OFFSET_ITEAU); |
29848ac9 | 728 | vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 729 | TSI148_LCSR_OFFSET_ITEAL); |
29848ac9 | 730 | pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 731 | TSI148_LCSR_OFFSET_ITOFU); |
29848ac9 | 732 | pci_offset_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 MW |
733 | TSI148_LCSR_OFFSET_ITOFL); |
734 | ||
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); | |
739 | ||
740 | *pci_base = (dma_addr_t)vme_base + pci_offset; | |
741 | ||
742 | *enabled = 0; | |
743 | *aspace = 0; | |
744 | *cycle = 0; | |
745 | ||
746 | if (ctl & TSI148_LCSR_ITAT_EN) | |
747 | *enabled = 1; | |
748 | ||
749 | if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) { | |
750 | granularity = 0x10; | |
751 | *aspace |= VME_A16; | |
752 | } | |
753 | if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) { | |
754 | granularity = 0x1000; | |
755 | *aspace |= VME_A24; | |
756 | } | |
757 | if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) { | |
758 | granularity = 0x10000; | |
759 | *aspace |= VME_A32; | |
760 | } | |
761 | if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) { | |
762 | granularity = 0x10000; | |
763 | *aspace |= VME_A64; | |
764 | } | |
765 | ||
766 | /* Need granularity before we set the size */ | |
767 | *size = (unsigned long long)((vme_bound - *vme_base) + granularity); | |
768 | ||
769 | ||
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; | |
776 | ||
777 | if (ctl & TSI148_LCSR_ITAT_BLT) | |
778 | *cycle |= VME_BLT; | |
779 | if (ctl & TSI148_LCSR_ITAT_MBLT) | |
780 | *cycle |= VME_MBLT; | |
781 | if (ctl & TSI148_LCSR_ITAT_2eVME) | |
782 | *cycle |= VME_2eVME; | |
783 | if (ctl & TSI148_LCSR_ITAT_2eSST) | |
784 | *cycle |= VME_2eSST; | |
785 | if (ctl & TSI148_LCSR_ITAT_2eSSTB) | |
786 | *cycle |= VME_2eSSTB; | |
787 | ||
788 | if (ctl & TSI148_LCSR_ITAT_SUPR) | |
789 | *cycle |= VME_SUPER; | |
790 | if (ctl & TSI148_LCSR_ITAT_NPRIV) | |
791 | *cycle |= VME_USER; | |
792 | if (ctl & TSI148_LCSR_ITAT_PGM) | |
793 | *cycle |= VME_PROG; | |
794 | if (ctl & TSI148_LCSR_ITAT_DATA) | |
795 | *cycle |= VME_DATA; | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Allocate and map PCI Resource | |
802 | */ | |
803 | static int tsi148_alloc_resource(struct vme_master_resource *image, | |
804 | unsigned long long size) | |
805 | { | |
806 | unsigned long long existing_size; | |
807 | int retval = 0; | |
808 | struct pci_dev *pdev; | |
29848ac9 MW |
809 | struct vme_bridge *tsi148_bridge; |
810 | ||
811 | tsi148_bridge = image->parent; | |
d22b8ed9 | 812 | |
48d9356e | 813 | pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev); |
d22b8ed9 | 814 | |
8fafb476 MW |
815 | existing_size = (unsigned long long)(image->bus_resource.end - |
816 | image->bus_resource.start); | |
d22b8ed9 MW |
817 | |
818 | /* If the existing size is OK, return */ | |
59c22904 | 819 | if ((size != 0) && (existing_size == (size - 1))) |
d22b8ed9 MW |
820 | return 0; |
821 | ||
822 | if (existing_size != 0) { | |
823 | iounmap(image->kern_base); | |
824 | image->kern_base = NULL; | |
794a8946 | 825 | kfree(image->bus_resource.name); |
886953e9 EC |
826 | release_resource(&image->bus_resource); |
827 | memset(&image->bus_resource, 0, sizeof(struct resource)); | |
d22b8ed9 MW |
828 | } |
829 | ||
59c22904 | 830 | /* Exit here if size is zero */ |
7946328f | 831 | if (size == 0) |
59c22904 | 832 | return 0; |
59c22904 | 833 | |
8fafb476 | 834 | if (image->bus_resource.name == NULL) { |
0aa3f139 | 835 | image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC); |
8fafb476 | 836 | if (image->bus_resource.name == NULL) { |
48d9356e MW |
837 | dev_err(tsi148_bridge->parent, "Unable to allocate " |
838 | "memory for resource name\n"); | |
d22b8ed9 MW |
839 | retval = -ENOMEM; |
840 | goto err_name; | |
841 | } | |
842 | } | |
843 | ||
8fafb476 | 844 | sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name, |
d22b8ed9 MW |
845 | image->number); |
846 | ||
8fafb476 MW |
847 | image->bus_resource.start = 0; |
848 | image->bus_resource.end = (unsigned long)size; | |
849 | image->bus_resource.flags = IORESOURCE_MEM; | |
d22b8ed9 MW |
850 | |
851 | retval = pci_bus_alloc_resource(pdev->bus, | |
886953e9 | 852 | &image->bus_resource, size, size, PCIBIOS_MIN_MEM, |
d22b8ed9 MW |
853 | 0, NULL, NULL); |
854 | if (retval) { | |
48d9356e MW |
855 | dev_err(tsi148_bridge->parent, "Failed to allocate mem " |
856 | "resource for window %d size 0x%lx start 0x%lx\n", | |
d22b8ed9 | 857 | image->number, (unsigned long)size, |
8fafb476 | 858 | (unsigned long)image->bus_resource.start); |
d22b8ed9 MW |
859 | goto err_resource; |
860 | } | |
861 | ||
862 | image->kern_base = ioremap_nocache( | |
8fafb476 | 863 | image->bus_resource.start, size); |
d22b8ed9 | 864 | if (image->kern_base == NULL) { |
48d9356e | 865 | dev_err(tsi148_bridge->parent, "Failed to remap resource\n"); |
d22b8ed9 MW |
866 | retval = -ENOMEM; |
867 | goto err_remap; | |
868 | } | |
869 | ||
870 | return 0; | |
871 | ||
d22b8ed9 | 872 | err_remap: |
886953e9 | 873 | release_resource(&image->bus_resource); |
d22b8ed9 | 874 | err_resource: |
8fafb476 | 875 | kfree(image->bus_resource.name); |
886953e9 | 876 | memset(&image->bus_resource, 0, sizeof(struct resource)); |
d22b8ed9 MW |
877 | err_name: |
878 | return retval; | |
879 | } | |
880 | ||
881 | /* | |
882 | * Free and unmap PCI Resource | |
883 | */ | |
884 | static void tsi148_free_resource(struct vme_master_resource *image) | |
885 | { | |
886 | iounmap(image->kern_base); | |
887 | image->kern_base = NULL; | |
886953e9 | 888 | release_resource(&image->bus_resource); |
8fafb476 | 889 | kfree(image->bus_resource.name); |
886953e9 | 890 | memset(&image->bus_resource, 0, sizeof(struct resource)); |
d22b8ed9 MW |
891 | } |
892 | ||
893 | /* | |
894 | * Set the attributes of an outbound window. | |
895 | */ | |
5ade6c4d | 896 | static int tsi148_master_set(struct vme_master_resource *image, int enabled, |
6af04b06 MW |
897 | unsigned long long vme_base, unsigned long long size, u32 aspace, |
898 | u32 cycle, u32 dwidth) | |
d22b8ed9 MW |
899 | { |
900 | int retval = 0; | |
901 | unsigned int i; | |
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; | |
48d9356e | 907 | struct vme_bridge *tsi148_bridge; |
29848ac9 MW |
908 | struct tsi148_driver *bridge; |
909 | ||
48d9356e MW |
910 | tsi148_bridge = image->parent; |
911 | ||
912 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
913 | |
914 | /* Verify input data */ | |
915 | if (vme_base & 0xFFFF) { | |
48d9356e MW |
916 | dev_err(tsi148_bridge->parent, "Invalid VME Window " |
917 | "alignment\n"); | |
d22b8ed9 MW |
918 | retval = -EINVAL; |
919 | goto err_window; | |
920 | } | |
59c22904 MW |
921 | |
922 | if ((size == 0) && (enabled != 0)) { | |
48d9356e MW |
923 | dev_err(tsi148_bridge->parent, "Size must be non-zero for " |
924 | "enabled windows\n"); | |
d22b8ed9 MW |
925 | retval = -EINVAL; |
926 | goto err_window; | |
927 | } | |
928 | ||
886953e9 | 929 | spin_lock(&image->lock); |
d22b8ed9 MW |
930 | |
931 | /* Let's allocate the resource here rather than further up the stack as | |
25985edc | 932 | * it avoids pushing loads of bus dependent stuff up the stack. If size |
59c22904 | 933 | * is zero, any existing resource will be freed. |
d22b8ed9 MW |
934 | */ |
935 | retval = tsi148_alloc_resource(image, size); | |
936 | if (retval) { | |
886953e9 | 937 | spin_unlock(&image->lock); |
48d9356e | 938 | dev_err(tsi148_bridge->parent, "Unable to allocate memory for " |
59c22904 | 939 | "resource\n"); |
d22b8ed9 MW |
940 | goto err_res; |
941 | } | |
942 | ||
59c22904 MW |
943 | if (size == 0) { |
944 | pci_base = 0; | |
945 | pci_bound = 0; | |
946 | vme_offset = 0; | |
947 | } else { | |
8fafb476 | 948 | pci_base = (unsigned long long)image->bus_resource.start; |
59c22904 MW |
949 | |
950 | /* | |
951 | * Bound address is a valid address for the window, adjust | |
952 | * according to window granularity. | |
953 | */ | |
954 | pci_bound = pci_base + (size - 0x10000); | |
955 | vme_offset = vme_base - pci_base; | |
956 | } | |
d22b8ed9 MW |
957 | |
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); | |
962 | ||
963 | if (pci_base_low & 0xFFFF) { | |
886953e9 | 964 | spin_unlock(&image->lock); |
48d9356e | 965 | dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n"); |
d22b8ed9 MW |
966 | retval = -EINVAL; |
967 | goto err_gran; | |
968 | } | |
969 | if (pci_bound_low & 0xFFFF) { | |
886953e9 | 970 | spin_unlock(&image->lock); |
48d9356e | 971 | dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n"); |
d22b8ed9 MW |
972 | retval = -EINVAL; |
973 | goto err_gran; | |
974 | } | |
975 | if (vme_offset_low & 0xFFFF) { | |
886953e9 | 976 | spin_unlock(&image->lock); |
48d9356e MW |
977 | dev_err(tsi148_bridge->parent, "Invalid VME Offset " |
978 | "alignment\n"); | |
d22b8ed9 MW |
979 | retval = -EINVAL; |
980 | goto err_gran; | |
981 | } | |
982 | ||
983 | i = image->number; | |
984 | ||
985 | /* Disable while we are mucking around */ | |
29848ac9 | 986 | temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
987 | TSI148_LCSR_OFFSET_OTAT); |
988 | temp_ctl &= ~TSI148_LCSR_OTAT_EN; | |
29848ac9 | 989 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
990 | TSI148_LCSR_OFFSET_OTAT); |
991 | ||
d22b8ed9 MW |
992 | /* Setup 2eSST speeds */ |
993 | temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M; | |
994 | switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) { | |
995 | case VME_2eSST160: | |
996 | temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160; | |
997 | break; | |
998 | case VME_2eSST267: | |
999 | temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267; | |
1000 | break; | |
1001 | case VME_2eSST320: | |
1002 | temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320; | |
1003 | break; | |
1004 | } | |
1005 | ||
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; | |
1010 | } | |
1011 | if (cycle & VME_MBLT) { | |
1012 | temp_ctl &= ~TSI148_LCSR_OTAT_TM_M; | |
1013 | temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT; | |
1014 | } | |
1015 | if (cycle & VME_2eVME) { | |
1016 | temp_ctl &= ~TSI148_LCSR_OTAT_TM_M; | |
1017 | temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME; | |
1018 | } | |
1019 | if (cycle & VME_2eSST) { | |
1020 | temp_ctl &= ~TSI148_LCSR_OTAT_TM_M; | |
1021 | temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST; | |
1022 | } | |
1023 | if (cycle & VME_2eSSTB) { | |
48d9356e MW |
1024 | dev_warn(tsi148_bridge->parent, "Currently not setting " |
1025 | "Broadcast Select Registers\n"); | |
d22b8ed9 MW |
1026 | temp_ctl &= ~TSI148_LCSR_OTAT_TM_M; |
1027 | temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB; | |
1028 | } | |
1029 | ||
1030 | /* Setup data width */ | |
1031 | temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M; | |
1032 | switch (dwidth) { | |
1033 | case VME_D16: | |
1034 | temp_ctl |= TSI148_LCSR_OTAT_DBW_16; | |
1035 | break; | |
1036 | case VME_D32: | |
1037 | temp_ctl |= TSI148_LCSR_OTAT_DBW_32; | |
1038 | break; | |
1039 | default: | |
886953e9 | 1040 | spin_unlock(&image->lock); |
48d9356e | 1041 | dev_err(tsi148_bridge->parent, "Invalid data width\n"); |
d22b8ed9 MW |
1042 | retval = -EINVAL; |
1043 | goto err_dwidth; | |
1044 | } | |
1045 | ||
1046 | /* Setup address space */ | |
1047 | temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M; | |
1048 | switch (aspace) { | |
1049 | case VME_A16: | |
1050 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16; | |
1051 | break; | |
1052 | case VME_A24: | |
1053 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24; | |
1054 | break; | |
1055 | case VME_A32: | |
1056 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32; | |
1057 | break; | |
1058 | case VME_A64: | |
1059 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64; | |
1060 | break; | |
1061 | case VME_CRCSR: | |
1062 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR; | |
1063 | break; | |
1064 | case VME_USER1: | |
1065 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1; | |
1066 | break; | |
1067 | case VME_USER2: | |
1068 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2; | |
1069 | break; | |
1070 | case VME_USER3: | |
1071 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3; | |
1072 | break; | |
1073 | case VME_USER4: | |
1074 | temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4; | |
1075 | break; | |
1076 | default: | |
886953e9 | 1077 | spin_unlock(&image->lock); |
48d9356e | 1078 | dev_err(tsi148_bridge->parent, "Invalid address space\n"); |
d22b8ed9 MW |
1079 | retval = -EINVAL; |
1080 | goto err_aspace; | |
1081 | break; | |
1082 | } | |
1083 | ||
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; | |
1089 | ||
1090 | /* Setup mapping */ | |
29848ac9 | 1091 | iowrite32be(pci_base_high, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1092 | TSI148_LCSR_OFFSET_OTSAU); |
29848ac9 | 1093 | iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1094 | TSI148_LCSR_OFFSET_OTSAL); |
29848ac9 | 1095 | iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1096 | TSI148_LCSR_OFFSET_OTEAU); |
29848ac9 | 1097 | iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1098 | TSI148_LCSR_OFFSET_OTEAL); |
29848ac9 | 1099 | iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1100 | TSI148_LCSR_OFFSET_OTOFU); |
29848ac9 | 1101 | iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1102 | TSI148_LCSR_OFFSET_OTOFL); |
1103 | ||
d22b8ed9 | 1104 | /* Write ctl reg without enable */ |
29848ac9 | 1105 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1106 | TSI148_LCSR_OFFSET_OTAT); |
1107 | ||
1108 | if (enabled) | |
1109 | temp_ctl |= TSI148_LCSR_OTAT_EN; | |
1110 | ||
29848ac9 | 1111 | iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1112 | TSI148_LCSR_OFFSET_OTAT); |
1113 | ||
886953e9 | 1114 | spin_unlock(&image->lock); |
d22b8ed9 MW |
1115 | return 0; |
1116 | ||
1117 | err_aspace: | |
1118 | err_dwidth: | |
1119 | err_gran: | |
1120 | tsi148_free_resource(image); | |
1121 | err_res: | |
1122 | err_window: | |
1123 | return retval; | |
1124 | ||
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * Set the attributes of an outbound window. | |
1129 | * | |
1130 | * XXX Not parsing prefetch information. | |
1131 | */ | |
5ade6c4d | 1132 | static int __tsi148_master_get(struct vme_master_resource *image, int *enabled, |
6af04b06 MW |
1133 | unsigned long long *vme_base, unsigned long long *size, u32 *aspace, |
1134 | u32 *cycle, u32 *dwidth) | |
d22b8ed9 MW |
1135 | { |
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; | |
1140 | ||
1141 | unsigned long long pci_base, pci_bound, vme_offset; | |
29848ac9 MW |
1142 | struct tsi148_driver *bridge; |
1143 | ||
1144 | bridge = image->parent->driver_priv; | |
d22b8ed9 MW |
1145 | |
1146 | i = image->number; | |
1147 | ||
29848ac9 | 1148 | ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1149 | TSI148_LCSR_OFFSET_OTAT); |
1150 | ||
29848ac9 | 1151 | pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1152 | TSI148_LCSR_OFFSET_OTSAU); |
29848ac9 | 1153 | pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1154 | TSI148_LCSR_OFFSET_OTSAL); |
29848ac9 | 1155 | pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1156 | TSI148_LCSR_OFFSET_OTEAU); |
29848ac9 | 1157 | pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1158 | TSI148_LCSR_OFFSET_OTEAL); |
29848ac9 | 1159 | vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1160 | TSI148_LCSR_OFFSET_OTOFU); |
29848ac9 | 1161 | vme_offset_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1162 | TSI148_LCSR_OFFSET_OTOFL); |
1163 | ||
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); | |
1168 | ||
1169 | *vme_base = pci_base + vme_offset; | |
1170 | *size = (unsigned long long)(pci_bound - pci_base) + 0x10000; | |
1171 | ||
1172 | *enabled = 0; | |
1173 | *aspace = 0; | |
1174 | *cycle = 0; | |
1175 | *dwidth = 0; | |
1176 | ||
1177 | if (ctl & TSI148_LCSR_OTAT_EN) | |
1178 | *enabled = 1; | |
1179 | ||
1180 | /* Setup address space */ | |
1181 | if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16) | |
1182 | *aspace |= VME_A16; | |
1183 | if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24) | |
1184 | *aspace |= VME_A24; | |
1185 | if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32) | |
1186 | *aspace |= VME_A32; | |
1187 | if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64) | |
1188 | *aspace |= VME_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; | |
1199 | ||
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; | |
1207 | ||
1208 | /* Setup cycle types */ | |
7946328f | 1209 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_SCT) |
d22b8ed9 | 1210 | *cycle |= VME_SCT; |
7946328f | 1211 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_BLT) |
d22b8ed9 | 1212 | *cycle |= VME_BLT; |
7946328f | 1213 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_MBLT) |
d22b8ed9 | 1214 | *cycle |= VME_MBLT; |
7946328f | 1215 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eVME) |
d22b8ed9 | 1216 | *cycle |= VME_2eVME; |
7946328f | 1217 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSST) |
d22b8ed9 | 1218 | *cycle |= VME_2eSST; |
7946328f | 1219 | if ((ctl & TSI148_LCSR_OTAT_TM_M) == TSI148_LCSR_OTAT_TM_2eSSTB) |
d22b8ed9 MW |
1220 | *cycle |= VME_2eSSTB; |
1221 | ||
1222 | if (ctl & TSI148_LCSR_OTAT_SUP) | |
1223 | *cycle |= VME_SUPER; | |
1224 | else | |
1225 | *cycle |= VME_USER; | |
1226 | ||
1227 | if (ctl & TSI148_LCSR_OTAT_PGM) | |
1228 | *cycle |= VME_PROG; | |
1229 | else | |
1230 | *cycle |= VME_DATA; | |
1231 | ||
1232 | /* Setup data width */ | |
1233 | if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16) | |
1234 | *dwidth = VME_D16; | |
1235 | if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32) | |
1236 | *dwidth = VME_D32; | |
1237 | ||
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | ||
5ade6c4d | 1242 | static int tsi148_master_get(struct vme_master_resource *image, int *enabled, |
6af04b06 MW |
1243 | unsigned long long *vme_base, unsigned long long *size, u32 *aspace, |
1244 | u32 *cycle, u32 *dwidth) | |
d22b8ed9 MW |
1245 | { |
1246 | int retval; | |
1247 | ||
886953e9 | 1248 | spin_lock(&image->lock); |
d22b8ed9 MW |
1249 | |
1250 | retval = __tsi148_master_get(image, enabled, vme_base, size, aspace, | |
1251 | cycle, dwidth); | |
1252 | ||
886953e9 | 1253 | spin_unlock(&image->lock); |
d22b8ed9 MW |
1254 | |
1255 | return retval; | |
1256 | } | |
1257 | ||
5ade6c4d | 1258 | static ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf, |
d22b8ed9 MW |
1259 | size_t count, loff_t offset) |
1260 | { | |
1261 | int retval, enabled; | |
1262 | unsigned long long vme_base, size; | |
6af04b06 | 1263 | u32 aspace, cycle, dwidth; |
d22b8ed9 | 1264 | struct vme_bus_error *vme_err = NULL; |
29848ac9 | 1265 | struct vme_bridge *tsi148_bridge; |
363e2e6f MW |
1266 | void *addr = image->kern_base + offset; |
1267 | unsigned int done = 0; | |
1268 | unsigned int count32; | |
29848ac9 MW |
1269 | |
1270 | tsi148_bridge = image->parent; | |
d22b8ed9 | 1271 | |
886953e9 | 1272 | spin_lock(&image->lock); |
d22b8ed9 | 1273 | |
363e2e6f MW |
1274 | /* The following code handles VME address alignment. We cannot use |
1275 | * memcpy_xxx directly here because it may cut small data transfers in | |
1276 | * to 8-bit cycles, thus making D16 cycle impossible. | |
1277 | * On the other hand, the bridge itself assures that the maximum data | |
1278 | * cycle configured for the transfer is used and splits it | |
1279 | * automatically for non-aligned addresses, so we don't want the | |
1280 | * overhead of needlessly forcing small transfers for the entire cycle. | |
1281 | */ | |
1282 | if ((uintptr_t)addr & 0x1) { | |
1283 | *(u8 *)buf = ioread8(addr); | |
1284 | done += 1; | |
1285 | if (done == count) | |
1286 | goto out; | |
1287 | } | |
1288 | if ((uintptr_t)addr & 0x2) { | |
1289 | if ((count - done) < 2) { | |
1290 | *(u8 *)(buf + done) = ioread8(addr + done); | |
1291 | done += 1; | |
1292 | goto out; | |
1293 | } else { | |
1294 | *(u16 *)(buf + done) = ioread16(addr + done); | |
1295 | done += 2; | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | count32 = (count - done) & ~0x3; | |
1300 | if (count32 > 0) { | |
1301 | memcpy_fromio(buf + done, addr + done, count32); | |
1302 | done += count32; | |
1303 | } | |
1304 | ||
1305 | if ((count - done) & 0x2) { | |
1306 | *(u16 *)(buf + done) = ioread16(addr + done); | |
1307 | done += 2; | |
1308 | } | |
1309 | if ((count - done) & 0x1) { | |
1310 | *(u8 *)(buf + done) = ioread8(addr + done); | |
1311 | done += 1; | |
1312 | } | |
1313 | ||
1314 | out: | |
d22b8ed9 MW |
1315 | retval = count; |
1316 | ||
1317 | if (!err_chk) | |
1318 | goto skip_chk; | |
1319 | ||
1320 | __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle, | |
1321 | &dwidth); | |
1322 | ||
29848ac9 MW |
1323 | vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset, |
1324 | count); | |
7946328f | 1325 | if (vme_err != NULL) { |
d22b8ed9 MW |
1326 | dev_err(image->parent->parent, "First VME read error detected " |
1327 | "an at address 0x%llx\n", vme_err->address); | |
1328 | retval = vme_err->address - (vme_base + offset); | |
1329 | /* Clear down save errors in this address range */ | |
29848ac9 MW |
1330 | tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset, |
1331 | count); | |
d22b8ed9 MW |
1332 | } |
1333 | ||
1334 | skip_chk: | |
886953e9 | 1335 | spin_unlock(&image->lock); |
d22b8ed9 MW |
1336 | |
1337 | return retval; | |
1338 | } | |
1339 | ||
1340 | ||
5ade6c4d | 1341 | static ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf, |
d22b8ed9 MW |
1342 | size_t count, loff_t offset) |
1343 | { | |
1344 | int retval = 0, enabled; | |
1345 | unsigned long long vme_base, size; | |
6af04b06 | 1346 | u32 aspace, cycle, dwidth; |
363e2e6f MW |
1347 | void *addr = image->kern_base + offset; |
1348 | unsigned int done = 0; | |
1349 | unsigned int count32; | |
d22b8ed9 MW |
1350 | |
1351 | struct vme_bus_error *vme_err = NULL; | |
29848ac9 MW |
1352 | struct vme_bridge *tsi148_bridge; |
1353 | struct tsi148_driver *bridge; | |
1354 | ||
1355 | tsi148_bridge = image->parent; | |
1356 | ||
1357 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 1358 | |
886953e9 | 1359 | spin_lock(&image->lock); |
d22b8ed9 | 1360 | |
363e2e6f MW |
1361 | /* Here we apply for the same strategy we do in master_read |
1362 | * function in order to assure D16 cycle when required. | |
1363 | */ | |
1364 | if ((uintptr_t)addr & 0x1) { | |
1365 | iowrite8(*(u8 *)buf, addr); | |
1366 | done += 1; | |
1367 | if (done == count) | |
1368 | goto out; | |
1369 | } | |
1370 | if ((uintptr_t)addr & 0x2) { | |
1371 | if ((count - done) < 2) { | |
1372 | iowrite8(*(u8 *)(buf + done), addr + done); | |
1373 | done += 1; | |
1374 | goto out; | |
1375 | } else { | |
1376 | iowrite16(*(u16 *)(buf + done), addr + done); | |
1377 | done += 2; | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | count32 = (count - done) & ~0x3; | |
1382 | if (count32 > 0) { | |
1383 | memcpy_toio(addr + done, buf + done, count32); | |
1384 | done += count32; | |
1385 | } | |
1386 | ||
1387 | if ((count - done) & 0x2) { | |
1388 | iowrite16(*(u16 *)(buf + done), addr + done); | |
1389 | done += 2; | |
1390 | } | |
1391 | if ((count - done) & 0x1) { | |
1392 | iowrite8(*(u8 *)(buf + done), addr + done); | |
1393 | done += 1; | |
1394 | } | |
1395 | ||
1396 | out: | |
d22b8ed9 MW |
1397 | retval = count; |
1398 | ||
1399 | /* | |
1400 | * Writes are posted. We need to do a read on the VME bus to flush out | |
25985edc | 1401 | * all of the writes before we check for errors. We can't guarantee |
d22b8ed9 MW |
1402 | * that reading the data we have just written is safe. It is believed |
1403 | * that there isn't any read, write re-ordering, so we can read any | |
1404 | * location in VME space, so lets read the Device ID from the tsi148's | |
1405 | * own registers as mapped into CR/CSR space. | |
1406 | * | |
1407 | * We check for saved errors in the written address range/space. | |
1408 | */ | |
1409 | ||
1410 | if (!err_chk) | |
1411 | goto skip_chk; | |
1412 | ||
1413 | /* | |
1414 | * Get window info first, to maximise the time that the buffers may | |
1415 | * fluch on their own | |
1416 | */ | |
1417 | __tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle, | |
1418 | &dwidth); | |
1419 | ||
29848ac9 | 1420 | ioread16(bridge->flush_image->kern_base + 0x7F000); |
d22b8ed9 | 1421 | |
29848ac9 MW |
1422 | vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset, |
1423 | count); | |
7946328f | 1424 | if (vme_err != NULL) { |
48d9356e MW |
1425 | dev_warn(tsi148_bridge->parent, "First VME write error detected" |
1426 | " an at address 0x%llx\n", vme_err->address); | |
d22b8ed9 MW |
1427 | retval = vme_err->address - (vme_base + offset); |
1428 | /* Clear down save errors in this address range */ | |
29848ac9 MW |
1429 | tsi148_clear_errors(tsi148_bridge, aspace, vme_base + offset, |
1430 | count); | |
d22b8ed9 MW |
1431 | } |
1432 | ||
1433 | skip_chk: | |
886953e9 | 1434 | spin_unlock(&image->lock); |
d22b8ed9 MW |
1435 | |
1436 | return retval; | |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * Perform an RMW cycle on the VME bus. | |
1441 | * | |
1442 | * Requires a previously configured master window, returns final value. | |
1443 | */ | |
5ade6c4d | 1444 | static unsigned int tsi148_master_rmw(struct vme_master_resource *image, |
d22b8ed9 MW |
1445 | unsigned int mask, unsigned int compare, unsigned int swap, |
1446 | loff_t offset) | |
1447 | { | |
1448 | unsigned long long pci_addr; | |
1449 | unsigned int pci_addr_high, pci_addr_low; | |
1450 | u32 tmp, result; | |
1451 | int i; | |
29848ac9 | 1452 | struct tsi148_driver *bridge; |
d22b8ed9 | 1453 | |
29848ac9 | 1454 | bridge = image->parent->driver_priv; |
d22b8ed9 MW |
1455 | |
1456 | /* Find the PCI address that maps to the desired VME address */ | |
1457 | i = image->number; | |
1458 | ||
1459 | /* Locking as we can only do one of these at a time */ | |
886953e9 | 1460 | mutex_lock(&bridge->vme_rmw); |
d22b8ed9 MW |
1461 | |
1462 | /* Lock image */ | |
886953e9 | 1463 | spin_lock(&image->lock); |
d22b8ed9 | 1464 | |
29848ac9 | 1465 | pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 | 1466 | TSI148_LCSR_OFFSET_OTSAU); |
29848ac9 | 1467 | pci_addr_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
1468 | TSI148_LCSR_OFFSET_OTSAL); |
1469 | ||
1470 | reg_join(pci_addr_high, pci_addr_low, &pci_addr); | |
1471 | reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low); | |
1472 | ||
1473 | /* Configure registers */ | |
29848ac9 MW |
1474 | iowrite32be(mask, bridge->base + TSI148_LCSR_RMWEN); |
1475 | iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC); | |
1476 | iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS); | |
1477 | iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU); | |
1478 | iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL); | |
d22b8ed9 MW |
1479 | |
1480 | /* Enable RMW */ | |
29848ac9 | 1481 | tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL); |
d22b8ed9 | 1482 | tmp |= TSI148_LCSR_VMCTRL_RMWEN; |
29848ac9 | 1483 | iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL); |
d22b8ed9 MW |
1484 | |
1485 | /* Kick process off with a read to the required address. */ | |
1486 | result = ioread32be(image->kern_base + offset); | |
1487 | ||
1488 | /* Disable RMW */ | |
29848ac9 | 1489 | tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL); |
d22b8ed9 | 1490 | tmp &= ~TSI148_LCSR_VMCTRL_RMWEN; |
29848ac9 | 1491 | iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL); |
d22b8ed9 | 1492 | |
886953e9 | 1493 | spin_unlock(&image->lock); |
d22b8ed9 | 1494 | |
886953e9 | 1495 | mutex_unlock(&bridge->vme_rmw); |
d22b8ed9 MW |
1496 | |
1497 | return result; | |
1498 | } | |
1499 | ||
ac1a4f2c | 1500 | static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr, |
6af04b06 | 1501 | u32 aspace, u32 cycle, u32 dwidth) |
d22b8ed9 | 1502 | { |
ac1a4f2c MW |
1503 | u32 val; |
1504 | ||
1505 | val = be32_to_cpu(*attr); | |
1506 | ||
d22b8ed9 MW |
1507 | /* Setup 2eSST speeds */ |
1508 | switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) { | |
1509 | case VME_2eSST160: | |
ac1a4f2c | 1510 | val |= TSI148_LCSR_DSAT_2eSSTM_160; |
d22b8ed9 MW |
1511 | break; |
1512 | case VME_2eSST267: | |
ac1a4f2c | 1513 | val |= TSI148_LCSR_DSAT_2eSSTM_267; |
d22b8ed9 MW |
1514 | break; |
1515 | case VME_2eSST320: | |
ac1a4f2c | 1516 | val |= TSI148_LCSR_DSAT_2eSSTM_320; |
d22b8ed9 MW |
1517 | break; |
1518 | } | |
1519 | ||
1520 | /* Setup cycle types */ | |
7946328f | 1521 | if (cycle & VME_SCT) |
ac1a4f2c | 1522 | val |= TSI148_LCSR_DSAT_TM_SCT; |
7946328f MW |
1523 | |
1524 | if (cycle & VME_BLT) | |
ac1a4f2c | 1525 | val |= TSI148_LCSR_DSAT_TM_BLT; |
7946328f MW |
1526 | |
1527 | if (cycle & VME_MBLT) | |
ac1a4f2c | 1528 | val |= TSI148_LCSR_DSAT_TM_MBLT; |
7946328f MW |
1529 | |
1530 | if (cycle & VME_2eVME) | |
ac1a4f2c | 1531 | val |= TSI148_LCSR_DSAT_TM_2eVME; |
7946328f MW |
1532 | |
1533 | if (cycle & VME_2eSST) | |
ac1a4f2c | 1534 | val |= TSI148_LCSR_DSAT_TM_2eSST; |
7946328f | 1535 | |
d22b8ed9 | 1536 | if (cycle & VME_2eSSTB) { |
48d9356e MW |
1537 | dev_err(dev, "Currently not setting Broadcast Select " |
1538 | "Registers\n"); | |
ac1a4f2c | 1539 | val |= TSI148_LCSR_DSAT_TM_2eSSTB; |
d22b8ed9 MW |
1540 | } |
1541 | ||
1542 | /* Setup data width */ | |
1543 | switch (dwidth) { | |
1544 | case VME_D16: | |
ac1a4f2c | 1545 | val |= TSI148_LCSR_DSAT_DBW_16; |
d22b8ed9 MW |
1546 | break; |
1547 | case VME_D32: | |
ac1a4f2c | 1548 | val |= TSI148_LCSR_DSAT_DBW_32; |
d22b8ed9 MW |
1549 | break; |
1550 | default: | |
48d9356e | 1551 | dev_err(dev, "Invalid data width\n"); |
d22b8ed9 MW |
1552 | return -EINVAL; |
1553 | } | |
1554 | ||
1555 | /* Setup address space */ | |
1556 | switch (aspace) { | |
1557 | case VME_A16: | |
ac1a4f2c | 1558 | val |= TSI148_LCSR_DSAT_AMODE_A16; |
d22b8ed9 MW |
1559 | break; |
1560 | case VME_A24: | |
ac1a4f2c | 1561 | val |= TSI148_LCSR_DSAT_AMODE_A24; |
d22b8ed9 MW |
1562 | break; |
1563 | case VME_A32: | |
ac1a4f2c | 1564 | val |= TSI148_LCSR_DSAT_AMODE_A32; |
d22b8ed9 MW |
1565 | break; |
1566 | case VME_A64: | |
ac1a4f2c | 1567 | val |= TSI148_LCSR_DSAT_AMODE_A64; |
d22b8ed9 MW |
1568 | break; |
1569 | case VME_CRCSR: | |
ac1a4f2c | 1570 | val |= TSI148_LCSR_DSAT_AMODE_CRCSR; |
d22b8ed9 MW |
1571 | break; |
1572 | case VME_USER1: | |
ac1a4f2c | 1573 | val |= TSI148_LCSR_DSAT_AMODE_USER1; |
d22b8ed9 MW |
1574 | break; |
1575 | case VME_USER2: | |
ac1a4f2c | 1576 | val |= TSI148_LCSR_DSAT_AMODE_USER2; |
d22b8ed9 MW |
1577 | break; |
1578 | case VME_USER3: | |
ac1a4f2c | 1579 | val |= TSI148_LCSR_DSAT_AMODE_USER3; |
d22b8ed9 MW |
1580 | break; |
1581 | case VME_USER4: | |
ac1a4f2c | 1582 | val |= TSI148_LCSR_DSAT_AMODE_USER4; |
d22b8ed9 MW |
1583 | break; |
1584 | default: | |
48d9356e | 1585 | dev_err(dev, "Invalid address space\n"); |
d22b8ed9 MW |
1586 | return -EINVAL; |
1587 | break; | |
1588 | } | |
1589 | ||
1590 | if (cycle & VME_SUPER) | |
ac1a4f2c | 1591 | val |= TSI148_LCSR_DSAT_SUP; |
d22b8ed9 | 1592 | if (cycle & VME_PROG) |
ac1a4f2c MW |
1593 | val |= TSI148_LCSR_DSAT_PGM; |
1594 | ||
1595 | *attr = cpu_to_be32(val); | |
d22b8ed9 MW |
1596 | |
1597 | return 0; | |
1598 | } | |
1599 | ||
ac1a4f2c | 1600 | static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr, |
6af04b06 | 1601 | u32 aspace, u32 cycle, u32 dwidth) |
d22b8ed9 | 1602 | { |
ac1a4f2c MW |
1603 | u32 val; |
1604 | ||
1605 | val = be32_to_cpu(*attr); | |
1606 | ||
d22b8ed9 MW |
1607 | /* Setup 2eSST speeds */ |
1608 | switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) { | |
1609 | case VME_2eSST160: | |
ac1a4f2c | 1610 | val |= TSI148_LCSR_DDAT_2eSSTM_160; |
d22b8ed9 MW |
1611 | break; |
1612 | case VME_2eSST267: | |
ac1a4f2c | 1613 | val |= TSI148_LCSR_DDAT_2eSSTM_267; |
d22b8ed9 MW |
1614 | break; |
1615 | case VME_2eSST320: | |
ac1a4f2c | 1616 | val |= TSI148_LCSR_DDAT_2eSSTM_320; |
d22b8ed9 MW |
1617 | break; |
1618 | } | |
1619 | ||
1620 | /* Setup cycle types */ | |
7946328f | 1621 | if (cycle & VME_SCT) |
ac1a4f2c | 1622 | val |= TSI148_LCSR_DDAT_TM_SCT; |
7946328f MW |
1623 | |
1624 | if (cycle & VME_BLT) | |
ac1a4f2c | 1625 | val |= TSI148_LCSR_DDAT_TM_BLT; |
7946328f MW |
1626 | |
1627 | if (cycle & VME_MBLT) | |
ac1a4f2c | 1628 | val |= TSI148_LCSR_DDAT_TM_MBLT; |
7946328f MW |
1629 | |
1630 | if (cycle & VME_2eVME) | |
ac1a4f2c | 1631 | val |= TSI148_LCSR_DDAT_TM_2eVME; |
7946328f MW |
1632 | |
1633 | if (cycle & VME_2eSST) | |
ac1a4f2c | 1634 | val |= TSI148_LCSR_DDAT_TM_2eSST; |
7946328f | 1635 | |
d22b8ed9 | 1636 | if (cycle & VME_2eSSTB) { |
48d9356e MW |
1637 | dev_err(dev, "Currently not setting Broadcast Select " |
1638 | "Registers\n"); | |
ac1a4f2c | 1639 | val |= TSI148_LCSR_DDAT_TM_2eSSTB; |
d22b8ed9 MW |
1640 | } |
1641 | ||
1642 | /* Setup data width */ | |
1643 | switch (dwidth) { | |
1644 | case VME_D16: | |
ac1a4f2c | 1645 | val |= TSI148_LCSR_DDAT_DBW_16; |
d22b8ed9 MW |
1646 | break; |
1647 | case VME_D32: | |
ac1a4f2c | 1648 | val |= TSI148_LCSR_DDAT_DBW_32; |
d22b8ed9 MW |
1649 | break; |
1650 | default: | |
48d9356e | 1651 | dev_err(dev, "Invalid data width\n"); |
d22b8ed9 MW |
1652 | return -EINVAL; |
1653 | } | |
1654 | ||
1655 | /* Setup address space */ | |
1656 | switch (aspace) { | |
1657 | case VME_A16: | |
ac1a4f2c | 1658 | val |= TSI148_LCSR_DDAT_AMODE_A16; |
d22b8ed9 MW |
1659 | break; |
1660 | case VME_A24: | |
ac1a4f2c | 1661 | val |= TSI148_LCSR_DDAT_AMODE_A24; |
d22b8ed9 MW |
1662 | break; |
1663 | case VME_A32: | |
ac1a4f2c | 1664 | val |= TSI148_LCSR_DDAT_AMODE_A32; |
d22b8ed9 MW |
1665 | break; |
1666 | case VME_A64: | |
ac1a4f2c | 1667 | val |= TSI148_LCSR_DDAT_AMODE_A64; |
d22b8ed9 MW |
1668 | break; |
1669 | case VME_CRCSR: | |
ac1a4f2c | 1670 | val |= TSI148_LCSR_DDAT_AMODE_CRCSR; |
d22b8ed9 MW |
1671 | break; |
1672 | case VME_USER1: | |
ac1a4f2c | 1673 | val |= TSI148_LCSR_DDAT_AMODE_USER1; |
d22b8ed9 MW |
1674 | break; |
1675 | case VME_USER2: | |
ac1a4f2c | 1676 | val |= TSI148_LCSR_DDAT_AMODE_USER2; |
d22b8ed9 MW |
1677 | break; |
1678 | case VME_USER3: | |
ac1a4f2c | 1679 | val |= TSI148_LCSR_DDAT_AMODE_USER3; |
d22b8ed9 MW |
1680 | break; |
1681 | case VME_USER4: | |
ac1a4f2c | 1682 | val |= TSI148_LCSR_DDAT_AMODE_USER4; |
d22b8ed9 MW |
1683 | break; |
1684 | default: | |
48d9356e | 1685 | dev_err(dev, "Invalid address space\n"); |
d22b8ed9 MW |
1686 | return -EINVAL; |
1687 | break; | |
1688 | } | |
1689 | ||
1690 | if (cycle & VME_SUPER) | |
ac1a4f2c | 1691 | val |= TSI148_LCSR_DDAT_SUP; |
d22b8ed9 | 1692 | if (cycle & VME_PROG) |
ac1a4f2c MW |
1693 | val |= TSI148_LCSR_DDAT_PGM; |
1694 | ||
1695 | *attr = cpu_to_be32(val); | |
d22b8ed9 MW |
1696 | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | /* | |
1701 | * Add a link list descriptor to the list | |
ac1a4f2c MW |
1702 | * |
1703 | * Note: DMA engine expects the DMA descriptor to be big endian. | |
d22b8ed9 | 1704 | */ |
5ade6c4d EC |
1705 | static int tsi148_dma_list_add(struct vme_dma_list *list, |
1706 | struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count) | |
d22b8ed9 MW |
1707 | { |
1708 | struct tsi148_dma_entry *entry, *prev; | |
ac1a4f2c | 1709 | u32 address_high, address_low, val; |
d22b8ed9 MW |
1710 | struct vme_dma_pattern *pattern_attr; |
1711 | struct vme_dma_pci *pci_attr; | |
1712 | struct vme_dma_vme *vme_attr; | |
d22b8ed9 | 1713 | int retval = 0; |
48d9356e MW |
1714 | struct vme_bridge *tsi148_bridge; |
1715 | ||
1716 | tsi148_bridge = list->parent->parent; | |
d22b8ed9 | 1717 | |
bb9ea89e | 1718 | /* Descriptor must be aligned on 64-bit boundaries */ |
7946328f | 1719 | entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL); |
d22b8ed9 | 1720 | if (entry == NULL) { |
48d9356e MW |
1721 | dev_err(tsi148_bridge->parent, "Failed to allocate memory for " |
1722 | "dma resource structure\n"); | |
d22b8ed9 MW |
1723 | retval = -ENOMEM; |
1724 | goto err_mem; | |
1725 | } | |
1726 | ||
1727 | /* Test descriptor alignment */ | |
886953e9 | 1728 | if ((unsigned long)&entry->descriptor & 0x7) { |
48d9356e MW |
1729 | dev_err(tsi148_bridge->parent, "Descriptor not aligned to 8 " |
1730 | "byte boundary as required: %p\n", | |
886953e9 | 1731 | &entry->descriptor); |
d22b8ed9 MW |
1732 | retval = -EINVAL; |
1733 | goto err_align; | |
1734 | } | |
1735 | ||
1736 | /* Given we are going to fill out the structure, we probably don't | |
1737 | * need to zero it, but better safe than sorry for now. | |
1738 | */ | |
886953e9 | 1739 | memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor)); |
d22b8ed9 MW |
1740 | |
1741 | /* Fill out source part */ | |
1742 | switch (src->type) { | |
1743 | case VME_DMA_PATTERN: | |
c4d82fbb | 1744 | pattern_attr = src->private; |
d22b8ed9 | 1745 | |
ac1a4f2c MW |
1746 | entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern); |
1747 | ||
1748 | val = TSI148_LCSR_DSAT_TYP_PAT; | |
1749 | ||
d22b8ed9 | 1750 | /* Default behaviour is 32 bit pattern */ |
7946328f | 1751 | if (pattern_attr->type & VME_DMA_PATTERN_BYTE) |
ac1a4f2c | 1752 | val |= TSI148_LCSR_DSAT_PSZ; |
7946328f | 1753 | |
d22b8ed9 | 1754 | /* It seems that the default behaviour is to increment */ |
7946328f | 1755 | if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0) |
ac1a4f2c MW |
1756 | val |= TSI148_LCSR_DSAT_NIN; |
1757 | entry->descriptor.dsat = cpu_to_be32(val); | |
d22b8ed9 MW |
1758 | break; |
1759 | case VME_DMA_PCI: | |
c4d82fbb | 1760 | pci_attr = src->private; |
d22b8ed9 MW |
1761 | |
1762 | reg_split((unsigned long long)pci_attr->address, &address_high, | |
1763 | &address_low); | |
ac1a4f2c MW |
1764 | entry->descriptor.dsau = cpu_to_be32(address_high); |
1765 | entry->descriptor.dsal = cpu_to_be32(address_low); | |
1766 | entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI); | |
d22b8ed9 MW |
1767 | break; |
1768 | case VME_DMA_VME: | |
c4d82fbb | 1769 | vme_attr = src->private; |
d22b8ed9 MW |
1770 | |
1771 | reg_split((unsigned long long)vme_attr->address, &address_high, | |
1772 | &address_low); | |
ac1a4f2c MW |
1773 | entry->descriptor.dsau = cpu_to_be32(address_high); |
1774 | entry->descriptor.dsal = cpu_to_be32(address_low); | |
1775 | entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME); | |
d22b8ed9 MW |
1776 | |
1777 | retval = tsi148_dma_set_vme_src_attributes( | |
886953e9 | 1778 | tsi148_bridge->parent, &entry->descriptor.dsat, |
48d9356e | 1779 | vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth); |
7946328f | 1780 | if (retval < 0) |
d22b8ed9 MW |
1781 | goto err_source; |
1782 | break; | |
1783 | default: | |
48d9356e | 1784 | dev_err(tsi148_bridge->parent, "Invalid source type\n"); |
d22b8ed9 MW |
1785 | retval = -EINVAL; |
1786 | goto err_source; | |
1787 | break; | |
1788 | } | |
1789 | ||
1790 | /* Assume last link - this will be over-written by adding another */ | |
ac1a4f2c MW |
1791 | entry->descriptor.dnlau = cpu_to_be32(0); |
1792 | entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA); | |
d22b8ed9 MW |
1793 | |
1794 | /* Fill out destination part */ | |
1795 | switch (dest->type) { | |
1796 | case VME_DMA_PCI: | |
c4d82fbb | 1797 | pci_attr = dest->private; |
d22b8ed9 MW |
1798 | |
1799 | reg_split((unsigned long long)pci_attr->address, &address_high, | |
1800 | &address_low); | |
ac1a4f2c MW |
1801 | entry->descriptor.ddau = cpu_to_be32(address_high); |
1802 | entry->descriptor.ddal = cpu_to_be32(address_low); | |
1803 | entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI); | |
d22b8ed9 MW |
1804 | break; |
1805 | case VME_DMA_VME: | |
c4d82fbb | 1806 | vme_attr = dest->private; |
d22b8ed9 MW |
1807 | |
1808 | reg_split((unsigned long long)vme_attr->address, &address_high, | |
1809 | &address_low); | |
ac1a4f2c MW |
1810 | entry->descriptor.ddau = cpu_to_be32(address_high); |
1811 | entry->descriptor.ddal = cpu_to_be32(address_low); | |
1812 | entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME); | |
d22b8ed9 MW |
1813 | |
1814 | retval = tsi148_dma_set_vme_dest_attributes( | |
886953e9 | 1815 | tsi148_bridge->parent, &entry->descriptor.ddat, |
48d9356e | 1816 | vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth); |
7946328f | 1817 | if (retval < 0) |
d22b8ed9 MW |
1818 | goto err_dest; |
1819 | break; | |
1820 | default: | |
48d9356e | 1821 | dev_err(tsi148_bridge->parent, "Invalid destination type\n"); |
d22b8ed9 MW |
1822 | retval = -EINVAL; |
1823 | goto err_dest; | |
1824 | break; | |
1825 | } | |
1826 | ||
1827 | /* Fill out count */ | |
ac1a4f2c | 1828 | entry->descriptor.dcnt = cpu_to_be32((u32)count); |
d22b8ed9 MW |
1829 | |
1830 | /* Add to list */ | |
886953e9 | 1831 | list_add_tail(&entry->list, &list->entries); |
d22b8ed9 MW |
1832 | |
1833 | /* Fill out previous descriptors "Next Address" */ | |
886953e9 | 1834 | if (entry->list.prev != &list->entries) { |
d22b8ed9 MW |
1835 | prev = list_entry(entry->list.prev, struct tsi148_dma_entry, |
1836 | list); | |
1837 | /* We need the bus address for the pointer */ | |
3abc48ae MW |
1838 | entry->dma_handle = dma_map_single(tsi148_bridge->parent, |
1839 | &entry->descriptor, | |
1840 | sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE); | |
1841 | ||
ac1a4f2c MW |
1842 | reg_split((unsigned long long)entry->dma_handle, &address_high, |
1843 | &address_low); | |
1844 | entry->descriptor.dnlau = cpu_to_be32(address_high); | |
1845 | entry->descriptor.dnlal = cpu_to_be32(address_low); | |
1846 | ||
d22b8ed9 MW |
1847 | } |
1848 | ||
1849 | return 0; | |
1850 | ||
1851 | err_dest: | |
1852 | err_source: | |
1853 | err_align: | |
1854 | kfree(entry); | |
1855 | err_mem: | |
1856 | return retval; | |
1857 | } | |
1858 | ||
1859 | /* | |
1860 | * Check to see if the provided DMA channel is busy. | |
1861 | */ | |
29848ac9 | 1862 | static int tsi148_dma_busy(struct vme_bridge *tsi148_bridge, int channel) |
d22b8ed9 MW |
1863 | { |
1864 | u32 tmp; | |
29848ac9 MW |
1865 | struct tsi148_driver *bridge; |
1866 | ||
1867 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 1868 | |
29848ac9 | 1869 | tmp = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] + |
d22b8ed9 MW |
1870 | TSI148_LCSR_OFFSET_DSTA); |
1871 | ||
1872 | if (tmp & TSI148_LCSR_DSTA_BSY) | |
1873 | return 0; | |
1874 | else | |
1875 | return 1; | |
1876 | ||
1877 | } | |
1878 | ||
1879 | /* | |
1880 | * Execute a previously generated link list | |
1881 | * | |
1882 | * XXX Need to provide control register configuration. | |
1883 | */ | |
5ade6c4d | 1884 | static int tsi148_dma_list_exec(struct vme_dma_list *list) |
d22b8ed9 MW |
1885 | { |
1886 | struct vme_dma_resource *ctrlr; | |
1887 | int channel, retval = 0; | |
1888 | struct tsi148_dma_entry *entry; | |
d22b8ed9 MW |
1889 | u32 bus_addr_high, bus_addr_low; |
1890 | u32 val, dctlreg = 0; | |
48d9356e | 1891 | struct vme_bridge *tsi148_bridge; |
29848ac9 | 1892 | struct tsi148_driver *bridge; |
d22b8ed9 MW |
1893 | |
1894 | ctrlr = list->parent; | |
1895 | ||
48d9356e MW |
1896 | tsi148_bridge = ctrlr->parent; |
1897 | ||
1898 | bridge = tsi148_bridge->driver_priv; | |
29848ac9 | 1899 | |
886953e9 | 1900 | mutex_lock(&ctrlr->mtx); |
d22b8ed9 MW |
1901 | |
1902 | channel = ctrlr->number; | |
1903 | ||
886953e9 | 1904 | if (!list_empty(&ctrlr->running)) { |
d22b8ed9 MW |
1905 | /* |
1906 | * XXX We have an active DMA transfer and currently haven't | |
1907 | * sorted out the mechanism for "pending" DMA transfers. | |
1908 | * Return busy. | |
1909 | */ | |
1910 | /* Need to add to pending here */ | |
886953e9 | 1911 | mutex_unlock(&ctrlr->mtx); |
d22b8ed9 MW |
1912 | return -EBUSY; |
1913 | } else { | |
886953e9 | 1914 | list_add(&list->list, &ctrlr->running); |
d22b8ed9 | 1915 | } |
d22b8ed9 MW |
1916 | |
1917 | /* Get first bus address and write into registers */ | |
886953e9 | 1918 | entry = list_first_entry(&list->entries, struct tsi148_dma_entry, |
d22b8ed9 MW |
1919 | list); |
1920 | ||
3abc48ae MW |
1921 | entry->dma_handle = dma_map_single(tsi148_bridge->parent, |
1922 | &entry->descriptor, | |
1923 | sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE); | |
d22b8ed9 | 1924 | |
886953e9 | 1925 | mutex_unlock(&ctrlr->mtx); |
d22b8ed9 | 1926 | |
3abc48ae | 1927 | reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low); |
d22b8ed9 | 1928 | |
29848ac9 | 1929 | iowrite32be(bus_addr_high, bridge->base + |
d22b8ed9 | 1930 | TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU); |
29848ac9 | 1931 | iowrite32be(bus_addr_low, bridge->base + |
d22b8ed9 MW |
1932 | TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL); |
1933 | ||
ac1a4f2c MW |
1934 | dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] + |
1935 | TSI148_LCSR_OFFSET_DCTL); | |
1936 | ||
d22b8ed9 | 1937 | /* Start the operation */ |
29848ac9 | 1938 | iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base + |
d22b8ed9 MW |
1939 | TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL); |
1940 | ||
29848ac9 MW |
1941 | wait_event_interruptible(bridge->dma_queue[channel], |
1942 | tsi148_dma_busy(ctrlr->parent, channel)); | |
ac1a4f2c | 1943 | |
d22b8ed9 MW |
1944 | /* |
1945 | * Read status register, this register is valid until we kick off a | |
1946 | * new transfer. | |
1947 | */ | |
29848ac9 | 1948 | val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] + |
d22b8ed9 MW |
1949 | TSI148_LCSR_OFFSET_DSTA); |
1950 | ||
1951 | if (val & TSI148_LCSR_DSTA_VBE) { | |
48d9356e | 1952 | dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val); |
d22b8ed9 MW |
1953 | retval = -EIO; |
1954 | } | |
1955 | ||
1956 | /* Remove list from running list */ | |
886953e9 EC |
1957 | mutex_lock(&ctrlr->mtx); |
1958 | list_del(&list->list); | |
1959 | mutex_unlock(&ctrlr->mtx); | |
d22b8ed9 MW |
1960 | |
1961 | return retval; | |
1962 | } | |
1963 | ||
1964 | /* | |
1965 | * Clean up a previously generated link list | |
1966 | * | |
1967 | * We have a separate function, don't assume that the chain can't be reused. | |
1968 | */ | |
5ade6c4d | 1969 | static int tsi148_dma_list_empty(struct vme_dma_list *list) |
d22b8ed9 MW |
1970 | { |
1971 | struct list_head *pos, *temp; | |
7946328f | 1972 | struct tsi148_dma_entry *entry; |
d22b8ed9 | 1973 | |
3abc48ae MW |
1974 | struct vme_bridge *tsi148_bridge = list->parent->parent; |
1975 | ||
d22b8ed9 | 1976 | /* detach and free each entry */ |
886953e9 | 1977 | list_for_each_safe(pos, temp, &list->entries) { |
d22b8ed9 MW |
1978 | list_del(pos); |
1979 | entry = list_entry(pos, struct tsi148_dma_entry, list); | |
3abc48ae MW |
1980 | |
1981 | dma_unmap_single(tsi148_bridge->parent, entry->dma_handle, | |
1982 | sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE); | |
d22b8ed9 MW |
1983 | kfree(entry); |
1984 | } | |
1985 | ||
7946328f | 1986 | return 0; |
d22b8ed9 MW |
1987 | } |
1988 | ||
1989 | /* | |
1990 | * All 4 location monitors reside at the same base - this is therefore a | |
1991 | * system wide configuration. | |
1992 | * | |
1993 | * This does not enable the LM monitor - that should be done when the first | |
1994 | * callback is attached and disabled when the last callback is removed. | |
1995 | */ | |
5ade6c4d | 1996 | static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base, |
6af04b06 | 1997 | u32 aspace, u32 cycle) |
d22b8ed9 MW |
1998 | { |
1999 | u32 lm_base_high, lm_base_low, lm_ctl = 0; | |
2000 | int i; | |
48d9356e | 2001 | struct vme_bridge *tsi148_bridge; |
29848ac9 MW |
2002 | struct tsi148_driver *bridge; |
2003 | ||
48d9356e MW |
2004 | tsi148_bridge = lm->parent; |
2005 | ||
2006 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 2007 | |
886953e9 | 2008 | mutex_lock(&lm->mtx); |
d22b8ed9 MW |
2009 | |
2010 | /* If we already have a callback attached, we can't move it! */ | |
42fb5031 | 2011 | for (i = 0; i < lm->monitors; i++) { |
29848ac9 | 2012 | if (bridge->lm_callback[i] != NULL) { |
886953e9 | 2013 | mutex_unlock(&lm->mtx); |
48d9356e MW |
2014 | dev_err(tsi148_bridge->parent, "Location monitor " |
2015 | "callback attached, can't reset\n"); | |
d22b8ed9 MW |
2016 | return -EBUSY; |
2017 | } | |
2018 | } | |
2019 | ||
2020 | switch (aspace) { | |
2021 | case VME_A16: | |
2022 | lm_ctl |= TSI148_LCSR_LMAT_AS_A16; | |
2023 | break; | |
2024 | case VME_A24: | |
2025 | lm_ctl |= TSI148_LCSR_LMAT_AS_A24; | |
2026 | break; | |
2027 | case VME_A32: | |
2028 | lm_ctl |= TSI148_LCSR_LMAT_AS_A32; | |
2029 | break; | |
2030 | case VME_A64: | |
2031 | lm_ctl |= TSI148_LCSR_LMAT_AS_A64; | |
2032 | break; | |
2033 | default: | |
886953e9 | 2034 | mutex_unlock(&lm->mtx); |
48d9356e | 2035 | dev_err(tsi148_bridge->parent, "Invalid address space\n"); |
d22b8ed9 MW |
2036 | return -EINVAL; |
2037 | break; | |
2038 | } | |
2039 | ||
2040 | if (cycle & VME_SUPER) | |
2041 | lm_ctl |= TSI148_LCSR_LMAT_SUPR ; | |
2042 | if (cycle & VME_USER) | |
2043 | lm_ctl |= TSI148_LCSR_LMAT_NPRIV; | |
2044 | if (cycle & VME_PROG) | |
2045 | lm_ctl |= TSI148_LCSR_LMAT_PGM; | |
2046 | if (cycle & VME_DATA) | |
2047 | lm_ctl |= TSI148_LCSR_LMAT_DATA; | |
2048 | ||
2049 | reg_split(lm_base, &lm_base_high, &lm_base_low); | |
2050 | ||
29848ac9 MW |
2051 | iowrite32be(lm_base_high, bridge->base + TSI148_LCSR_LMBAU); |
2052 | iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL); | |
2053 | iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT); | |
d22b8ed9 | 2054 | |
886953e9 | 2055 | mutex_unlock(&lm->mtx); |
d22b8ed9 MW |
2056 | |
2057 | return 0; | |
2058 | } | |
2059 | ||
2060 | /* Get configuration of the callback monitor and return whether it is enabled | |
2061 | * or disabled. | |
2062 | */ | |
5ade6c4d | 2063 | static int tsi148_lm_get(struct vme_lm_resource *lm, |
6af04b06 | 2064 | unsigned long long *lm_base, u32 *aspace, u32 *cycle) |
d22b8ed9 MW |
2065 | { |
2066 | u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0; | |
29848ac9 MW |
2067 | struct tsi148_driver *bridge; |
2068 | ||
2069 | bridge = lm->parent->driver_priv; | |
d22b8ed9 | 2070 | |
886953e9 | 2071 | mutex_lock(&lm->mtx); |
d22b8ed9 | 2072 | |
29848ac9 MW |
2073 | lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU); |
2074 | lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL); | |
2075 | lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT); | |
d22b8ed9 MW |
2076 | |
2077 | reg_join(lm_base_high, lm_base_low, lm_base); | |
2078 | ||
2079 | if (lm_ctl & TSI148_LCSR_LMAT_EN) | |
2080 | enabled = 1; | |
2081 | ||
7946328f | 2082 | if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16) |
d22b8ed9 | 2083 | *aspace |= VME_A16; |
7946328f MW |
2084 | |
2085 | if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24) | |
d22b8ed9 | 2086 | *aspace |= VME_A24; |
7946328f MW |
2087 | |
2088 | if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32) | |
d22b8ed9 | 2089 | *aspace |= VME_A32; |
7946328f MW |
2090 | |
2091 | if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64) | |
d22b8ed9 | 2092 | *aspace |= VME_A64; |
7946328f | 2093 | |
d22b8ed9 MW |
2094 | |
2095 | if (lm_ctl & TSI148_LCSR_LMAT_SUPR) | |
2096 | *cycle |= VME_SUPER; | |
2097 | if (lm_ctl & TSI148_LCSR_LMAT_NPRIV) | |
2098 | *cycle |= VME_USER; | |
2099 | if (lm_ctl & TSI148_LCSR_LMAT_PGM) | |
2100 | *cycle |= VME_PROG; | |
2101 | if (lm_ctl & TSI148_LCSR_LMAT_DATA) | |
2102 | *cycle |= VME_DATA; | |
2103 | ||
886953e9 | 2104 | mutex_unlock(&lm->mtx); |
d22b8ed9 MW |
2105 | |
2106 | return enabled; | |
2107 | } | |
2108 | ||
2109 | /* | |
2110 | * Attach a callback to a specific location monitor. | |
2111 | * | |
2112 | * Callback will be passed the monitor triggered. | |
2113 | */ | |
5ade6c4d | 2114 | static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor, |
42fb5031 | 2115 | void (*callback)(int)) |
d22b8ed9 MW |
2116 | { |
2117 | u32 lm_ctl, tmp; | |
48d9356e | 2118 | struct vme_bridge *tsi148_bridge; |
29848ac9 MW |
2119 | struct tsi148_driver *bridge; |
2120 | ||
48d9356e MW |
2121 | tsi148_bridge = lm->parent; |
2122 | ||
2123 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 2124 | |
886953e9 | 2125 | mutex_lock(&lm->mtx); |
d22b8ed9 MW |
2126 | |
2127 | /* Ensure that the location monitor is configured - need PGM or DATA */ | |
29848ac9 | 2128 | lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT); |
d22b8ed9 | 2129 | if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) { |
886953e9 | 2130 | mutex_unlock(&lm->mtx); |
48d9356e MW |
2131 | dev_err(tsi148_bridge->parent, "Location monitor not properly " |
2132 | "configured\n"); | |
d22b8ed9 MW |
2133 | return -EINVAL; |
2134 | } | |
2135 | ||
2136 | /* Check that a callback isn't already attached */ | |
29848ac9 | 2137 | if (bridge->lm_callback[monitor] != NULL) { |
886953e9 | 2138 | mutex_unlock(&lm->mtx); |
48d9356e | 2139 | dev_err(tsi148_bridge->parent, "Existing callback attached\n"); |
d22b8ed9 MW |
2140 | return -EBUSY; |
2141 | } | |
2142 | ||
2143 | /* Attach callback */ | |
29848ac9 | 2144 | bridge->lm_callback[monitor] = callback; |
d22b8ed9 MW |
2145 | |
2146 | /* Enable Location Monitor interrupt */ | |
29848ac9 | 2147 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN); |
d22b8ed9 | 2148 | tmp |= TSI148_LCSR_INTEN_LMEN[monitor]; |
29848ac9 | 2149 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN); |
d22b8ed9 | 2150 | |
29848ac9 | 2151 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO); |
d22b8ed9 | 2152 | tmp |= TSI148_LCSR_INTEO_LMEO[monitor]; |
29848ac9 | 2153 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO); |
d22b8ed9 MW |
2154 | |
2155 | /* Ensure that global Location Monitor Enable set */ | |
2156 | if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) { | |
2157 | lm_ctl |= TSI148_LCSR_LMAT_EN; | |
29848ac9 | 2158 | iowrite32be(lm_ctl, bridge->base + TSI148_LCSR_LMAT); |
d22b8ed9 MW |
2159 | } |
2160 | ||
886953e9 | 2161 | mutex_unlock(&lm->mtx); |
d22b8ed9 MW |
2162 | |
2163 | return 0; | |
2164 | } | |
2165 | ||
2166 | /* | |
2167 | * Detach a callback function forn a specific location monitor. | |
2168 | */ | |
5ade6c4d | 2169 | static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor) |
d22b8ed9 MW |
2170 | { |
2171 | u32 lm_en, tmp; | |
29848ac9 MW |
2172 | struct tsi148_driver *bridge; |
2173 | ||
2174 | bridge = lm->parent->driver_priv; | |
d22b8ed9 | 2175 | |
886953e9 | 2176 | mutex_lock(&lm->mtx); |
d22b8ed9 MW |
2177 | |
2178 | /* Disable Location Monitor and ensure previous interrupts are clear */ | |
29848ac9 | 2179 | lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN); |
d22b8ed9 | 2180 | lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor]; |
29848ac9 | 2181 | iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN); |
d22b8ed9 | 2182 | |
29848ac9 | 2183 | tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO); |
d22b8ed9 | 2184 | tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor]; |
29848ac9 | 2185 | iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO); |
d22b8ed9 MW |
2186 | |
2187 | iowrite32be(TSI148_LCSR_INTC_LMC[monitor], | |
29848ac9 | 2188 | bridge->base + TSI148_LCSR_INTC); |
d22b8ed9 MW |
2189 | |
2190 | /* Detach callback */ | |
29848ac9 | 2191 | bridge->lm_callback[monitor] = NULL; |
d22b8ed9 MW |
2192 | |
2193 | /* If all location monitors disabled, disable global Location Monitor */ | |
2194 | if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S | | |
2195 | TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) { | |
29848ac9 | 2196 | tmp = ioread32be(bridge->base + TSI148_LCSR_LMAT); |
d22b8ed9 | 2197 | tmp &= ~TSI148_LCSR_LMAT_EN; |
29848ac9 | 2198 | iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT); |
d22b8ed9 MW |
2199 | } |
2200 | ||
886953e9 | 2201 | mutex_unlock(&lm->mtx); |
d22b8ed9 MW |
2202 | |
2203 | return 0; | |
2204 | } | |
2205 | ||
2206 | /* | |
2207 | * Determine Geographical Addressing | |
2208 | */ | |
5ade6c4d | 2209 | static int tsi148_slot_get(struct vme_bridge *tsi148_bridge) |
d22b8ed9 | 2210 | { |
7946328f | 2211 | u32 slot = 0; |
29848ac9 MW |
2212 | struct tsi148_driver *bridge; |
2213 | ||
2214 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 2215 | |
638f199d | 2216 | if (!geoid) { |
29848ac9 | 2217 | slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT); |
638f199d MW |
2218 | slot = slot & TSI148_LCSR_VSTAT_GA_M; |
2219 | } else | |
2220 | slot = geoid; | |
2221 | ||
d22b8ed9 MW |
2222 | return (int)slot; |
2223 | } | |
2224 | ||
8a508ff4 | 2225 | static void *tsi148_alloc_consistent(struct device *parent, size_t size, |
7f58f025 MV |
2226 | dma_addr_t *dma) |
2227 | { | |
2228 | struct pci_dev *pdev; | |
2229 | ||
2230 | /* Find pci_dev container of dev */ | |
2231 | pdev = container_of(parent, struct pci_dev, dev); | |
2232 | ||
2233 | return pci_alloc_consistent(pdev, size, dma); | |
2234 | } | |
2235 | ||
8a508ff4 HS |
2236 | static void tsi148_free_consistent(struct device *parent, size_t size, |
2237 | void *vaddr, dma_addr_t dma) | |
7f58f025 MV |
2238 | { |
2239 | struct pci_dev *pdev; | |
2240 | ||
2241 | /* Find pci_dev container of dev */ | |
2242 | pdev = container_of(parent, struct pci_dev, dev); | |
2243 | ||
2244 | pci_free_consistent(pdev, size, vaddr, dma); | |
2245 | } | |
2246 | ||
d22b8ed9 MW |
2247 | static int __init tsi148_init(void) |
2248 | { | |
2249 | return pci_register_driver(&tsi148_driver); | |
2250 | } | |
2251 | ||
2252 | /* | |
2253 | * Configure CR/CSR space | |
2254 | * | |
2255 | * Access to the CR/CSR can be configured at power-up. The location of the | |
2256 | * CR/CSR registers in the CR/CSR address space is determined by the boards | |
2257 | * Auto-ID or Geographic address. This function ensures that the window is | |
2258 | * enabled at an offset consistent with the boards geopgraphic address. | |
2259 | * | |
2260 | * Each board has a 512kB window, with the highest 4kB being used for the | |
2261 | * boards registers, this means there is a fix length 508kB window which must | |
2262 | * be mapped onto PCI memory. | |
2263 | */ | |
29848ac9 MW |
2264 | static int tsi148_crcsr_init(struct vme_bridge *tsi148_bridge, |
2265 | struct pci_dev *pdev) | |
d22b8ed9 MW |
2266 | { |
2267 | u32 cbar, crat, vstat; | |
2268 | u32 crcsr_bus_high, crcsr_bus_low; | |
2269 | int retval; | |
29848ac9 MW |
2270 | struct tsi148_driver *bridge; |
2271 | ||
2272 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
2273 | |
2274 | /* Allocate mem for CR/CSR image */ | |
29848ac9 | 2275 | bridge->crcsr_kernel = pci_alloc_consistent(pdev, VME_CRCSR_BUF_SIZE, |
886953e9 | 2276 | &bridge->crcsr_bus); |
29848ac9 | 2277 | if (bridge->crcsr_kernel == NULL) { |
48d9356e MW |
2278 | dev_err(tsi148_bridge->parent, "Failed to allocate memory for " |
2279 | "CR/CSR image\n"); | |
d22b8ed9 MW |
2280 | return -ENOMEM; |
2281 | } | |
2282 | ||
29848ac9 | 2283 | memset(bridge->crcsr_kernel, 0, VME_CRCSR_BUF_SIZE); |
d22b8ed9 | 2284 | |
29848ac9 | 2285 | reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low); |
d22b8ed9 | 2286 | |
29848ac9 MW |
2287 | iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU); |
2288 | iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL); | |
d22b8ed9 MW |
2289 | |
2290 | /* Ensure that the CR/CSR is configured at the correct offset */ | |
29848ac9 | 2291 | cbar = ioread32be(bridge->base + TSI148_CBAR); |
d22b8ed9 MW |
2292 | cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3; |
2293 | ||
29848ac9 | 2294 | vstat = tsi148_slot_get(tsi148_bridge); |
d22b8ed9 MW |
2295 | |
2296 | if (cbar != vstat) { | |
638f199d | 2297 | cbar = vstat; |
48d9356e | 2298 | dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n"); |
29848ac9 | 2299 | iowrite32be(cbar<<3, bridge->base + TSI148_CBAR); |
d22b8ed9 | 2300 | } |
48d9356e | 2301 | dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar); |
d22b8ed9 | 2302 | |
29848ac9 | 2303 | crat = ioread32be(bridge->base + TSI148_LCSR_CRAT); |
d22b8ed9 | 2304 | if (crat & TSI148_LCSR_CRAT_EN) { |
48d9356e | 2305 | dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n"); |
d22b8ed9 | 2306 | iowrite32be(crat | TSI148_LCSR_CRAT_EN, |
29848ac9 | 2307 | bridge->base + TSI148_LCSR_CRAT); |
d22b8ed9 | 2308 | } else |
48d9356e | 2309 | dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n"); |
d22b8ed9 MW |
2310 | |
2311 | /* If we want flushed, error-checked writes, set up a window | |
2312 | * over the CR/CSR registers. We read from here to safely flush | |
2313 | * through VME writes. | |
2314 | */ | |
7946328f | 2315 | if (err_chk) { |
29848ac9 MW |
2316 | retval = tsi148_master_set(bridge->flush_image, 1, |
2317 | (vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT, | |
2318 | VME_D16); | |
d22b8ed9 | 2319 | if (retval) |
48d9356e MW |
2320 | dev_err(tsi148_bridge->parent, "Configuring flush image" |
2321 | " failed\n"); | |
d22b8ed9 MW |
2322 | } |
2323 | ||
2324 | return 0; | |
2325 | ||
2326 | } | |
2327 | ||
29848ac9 MW |
2328 | static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge, |
2329 | struct pci_dev *pdev) | |
d22b8ed9 MW |
2330 | { |
2331 | u32 crat; | |
29848ac9 MW |
2332 | struct tsi148_driver *bridge; |
2333 | ||
2334 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 MW |
2335 | |
2336 | /* Turn off CR/CSR space */ | |
29848ac9 | 2337 | crat = ioread32be(bridge->base + TSI148_LCSR_CRAT); |
d22b8ed9 | 2338 | iowrite32be(crat & ~TSI148_LCSR_CRAT_EN, |
29848ac9 | 2339 | bridge->base + TSI148_LCSR_CRAT); |
d22b8ed9 MW |
2340 | |
2341 | /* Free image */ | |
29848ac9 MW |
2342 | iowrite32be(0, bridge->base + TSI148_LCSR_CROU); |
2343 | iowrite32be(0, bridge->base + TSI148_LCSR_CROL); | |
d22b8ed9 | 2344 | |
29848ac9 MW |
2345 | pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel, |
2346 | bridge->crcsr_bus); | |
d22b8ed9 MW |
2347 | } |
2348 | ||
2349 | static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
2350 | { | |
2351 | int retval, i, master_num; | |
2352 | u32 data; | |
b49c32ba | 2353 | struct list_head *pos = NULL, *n; |
29848ac9 MW |
2354 | struct vme_bridge *tsi148_bridge; |
2355 | struct tsi148_driver *tsi148_device; | |
d22b8ed9 MW |
2356 | struct vme_master_resource *master_image; |
2357 | struct vme_slave_resource *slave_image; | |
2358 | struct vme_dma_resource *dma_ctrlr; | |
42fb5031 | 2359 | struct vme_lm_resource *lm; |
d22b8ed9 MW |
2360 | |
2361 | /* If we want to support more than one of each bridge, we need to | |
2362 | * dynamically generate this so we get one per device | |
2363 | */ | |
7a6cb0d5 | 2364 | tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL); |
d22b8ed9 MW |
2365 | if (tsi148_bridge == NULL) { |
2366 | dev_err(&pdev->dev, "Failed to allocate memory for device " | |
2367 | "structure\n"); | |
2368 | retval = -ENOMEM; | |
2369 | goto err_struct; | |
2370 | } | |
2371 | ||
7a6cb0d5 | 2372 | tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL); |
29848ac9 MW |
2373 | if (tsi148_device == NULL) { |
2374 | dev_err(&pdev->dev, "Failed to allocate memory for device " | |
2375 | "structure\n"); | |
2376 | retval = -ENOMEM; | |
2377 | goto err_driver; | |
2378 | } | |
2379 | ||
29848ac9 MW |
2380 | tsi148_bridge->driver_priv = tsi148_device; |
2381 | ||
d22b8ed9 MW |
2382 | /* Enable the device */ |
2383 | retval = pci_enable_device(pdev); | |
2384 | if (retval) { | |
2385 | dev_err(&pdev->dev, "Unable to enable device\n"); | |
2386 | goto err_enable; | |
2387 | } | |
2388 | ||
2389 | /* Map Registers */ | |
2390 | retval = pci_request_regions(pdev, driver_name); | |
2391 | if (retval) { | |
2392 | dev_err(&pdev->dev, "Unable to reserve resources\n"); | |
2393 | goto err_resource; | |
2394 | } | |
2395 | ||
2396 | /* map registers in BAR 0 */ | |
29848ac9 MW |
2397 | tsi148_device->base = ioremap_nocache(pci_resource_start(pdev, 0), |
2398 | 4096); | |
2399 | if (!tsi148_device->base) { | |
d22b8ed9 MW |
2400 | dev_err(&pdev->dev, "Unable to remap CRG region\n"); |
2401 | retval = -EIO; | |
2402 | goto err_remap; | |
2403 | } | |
2404 | ||
2405 | /* Check to see if the mapping worked out */ | |
29848ac9 | 2406 | data = ioread32(tsi148_device->base + TSI148_PCFS_ID) & 0x0000FFFF; |
d22b8ed9 MW |
2407 | if (data != PCI_VENDOR_ID_TUNDRA) { |
2408 | dev_err(&pdev->dev, "CRG region check failed\n"); | |
2409 | retval = -EIO; | |
2410 | goto err_test; | |
2411 | } | |
2412 | ||
2413 | /* Initialize wait queues & mutual exclusion flags */ | |
886953e9 EC |
2414 | init_waitqueue_head(&tsi148_device->dma_queue[0]); |
2415 | init_waitqueue_head(&tsi148_device->dma_queue[1]); | |
2416 | init_waitqueue_head(&tsi148_device->iack_queue); | |
2417 | mutex_init(&tsi148_device->vme_int); | |
2418 | mutex_init(&tsi148_device->vme_rmw); | |
d22b8ed9 | 2419 | |
886953e9 | 2420 | tsi148_bridge->parent = &pdev->dev; |
d22b8ed9 MW |
2421 | strcpy(tsi148_bridge->name, driver_name); |
2422 | ||
2423 | /* Setup IRQ */ | |
2424 | retval = tsi148_irq_init(tsi148_bridge); | |
2425 | if (retval != 0) { | |
2426 | dev_err(&pdev->dev, "Chip Initialization failed.\n"); | |
2427 | goto err_irq; | |
2428 | } | |
2429 | ||
2430 | /* If we are going to flush writes, we need to read from the VME bus. | |
2431 | * We need to do this safely, thus we read the devices own CR/CSR | |
2432 | * register. To do this we must set up a window in CR/CSR space and | |
2433 | * hence have one less master window resource available. | |
2434 | */ | |
2435 | master_num = TSI148_MAX_MASTER; | |
7946328f | 2436 | if (err_chk) { |
d22b8ed9 | 2437 | master_num--; |
29848ac9 | 2438 | |
32414878 | 2439 | tsi148_device->flush_image = |
29848ac9 MW |
2440 | kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL); |
2441 | if (tsi148_device->flush_image == NULL) { | |
d22b8ed9 MW |
2442 | dev_err(&pdev->dev, "Failed to allocate memory for " |
2443 | "flush resource structure\n"); | |
2444 | retval = -ENOMEM; | |
2445 | goto err_master; | |
2446 | } | |
29848ac9 | 2447 | tsi148_device->flush_image->parent = tsi148_bridge; |
886953e9 | 2448 | spin_lock_init(&tsi148_device->flush_image->lock); |
29848ac9 MW |
2449 | tsi148_device->flush_image->locked = 1; |
2450 | tsi148_device->flush_image->number = master_num; | |
2451 | tsi148_device->flush_image->address_attr = VME_A16 | VME_A24 | | |
2452 | VME_A32 | VME_A64; | |
2453 | tsi148_device->flush_image->cycle_attr = VME_SCT | VME_BLT | | |
2454 | VME_MBLT | VME_2eVME | VME_2eSST | VME_2eSSTB | | |
2455 | VME_2eSST160 | VME_2eSST267 | VME_2eSST320 | VME_SUPER | | |
2456 | VME_USER | VME_PROG | VME_DATA; | |
2457 | tsi148_device->flush_image->width_attr = VME_D16 | VME_D32; | |
886953e9 | 2458 | memset(&tsi148_device->flush_image->bus_resource, 0, |
d22b8ed9 | 2459 | sizeof(struct resource)); |
29848ac9 | 2460 | tsi148_device->flush_image->kern_base = NULL; |
d22b8ed9 MW |
2461 | } |
2462 | ||
2463 | /* Add master windows to list */ | |
886953e9 | 2464 | INIT_LIST_HEAD(&tsi148_bridge->master_resources); |
d22b8ed9 | 2465 | for (i = 0; i < master_num; i++) { |
7946328f MW |
2466 | master_image = kmalloc(sizeof(struct vme_master_resource), |
2467 | GFP_KERNEL); | |
d22b8ed9 MW |
2468 | if (master_image == NULL) { |
2469 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
2470 | "master resource structure\n"); | |
2471 | retval = -ENOMEM; | |
2472 | goto err_master; | |
2473 | } | |
2474 | master_image->parent = tsi148_bridge; | |
886953e9 | 2475 | spin_lock_init(&master_image->lock); |
d22b8ed9 MW |
2476 | master_image->locked = 0; |
2477 | master_image->number = i; | |
2478 | master_image->address_attr = VME_A16 | VME_A24 | VME_A32 | | |
2479 | VME_A64; | |
2480 | master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | | |
2481 | VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 | | |
2482 | VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER | | |
2483 | VME_PROG | VME_DATA; | |
2484 | master_image->width_attr = VME_D16 | VME_D32; | |
886953e9 | 2485 | memset(&master_image->bus_resource, 0, |
d22b8ed9 MW |
2486 | sizeof(struct resource)); |
2487 | master_image->kern_base = NULL; | |
886953e9 EC |
2488 | list_add_tail(&master_image->list, |
2489 | &tsi148_bridge->master_resources); | |
d22b8ed9 MW |
2490 | } |
2491 | ||
2492 | /* Add slave windows to list */ | |
886953e9 | 2493 | INIT_LIST_HEAD(&tsi148_bridge->slave_resources); |
d22b8ed9 | 2494 | for (i = 0; i < TSI148_MAX_SLAVE; i++) { |
7946328f MW |
2495 | slave_image = kmalloc(sizeof(struct vme_slave_resource), |
2496 | GFP_KERNEL); | |
d22b8ed9 MW |
2497 | if (slave_image == NULL) { |
2498 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
2499 | "slave resource structure\n"); | |
2500 | retval = -ENOMEM; | |
2501 | goto err_slave; | |
2502 | } | |
2503 | slave_image->parent = tsi148_bridge; | |
886953e9 | 2504 | mutex_init(&slave_image->mtx); |
d22b8ed9 MW |
2505 | slave_image->locked = 0; |
2506 | slave_image->number = i; | |
2507 | slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 | | |
2508 | VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 | | |
2509 | VME_USER3 | VME_USER4; | |
2510 | slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | | |
2511 | VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 | | |
2512 | VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER | | |
2513 | VME_PROG | VME_DATA; | |
886953e9 EC |
2514 | list_add_tail(&slave_image->list, |
2515 | &tsi148_bridge->slave_resources); | |
d22b8ed9 MW |
2516 | } |
2517 | ||
2518 | /* Add dma engines to list */ | |
886953e9 | 2519 | INIT_LIST_HEAD(&tsi148_bridge->dma_resources); |
d22b8ed9 | 2520 | for (i = 0; i < TSI148_MAX_DMA; i++) { |
7946328f MW |
2521 | dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource), |
2522 | GFP_KERNEL); | |
d22b8ed9 MW |
2523 | if (dma_ctrlr == NULL) { |
2524 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
2525 | "dma resource structure\n"); | |
2526 | retval = -ENOMEM; | |
2527 | goto err_dma; | |
2528 | } | |
2529 | dma_ctrlr->parent = tsi148_bridge; | |
886953e9 | 2530 | mutex_init(&dma_ctrlr->mtx); |
d22b8ed9 MW |
2531 | dma_ctrlr->locked = 0; |
2532 | dma_ctrlr->number = i; | |
4f723df4 MW |
2533 | dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM | |
2534 | VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME | | |
2535 | VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME | | |
2536 | VME_DMA_PATTERN_TO_MEM; | |
886953e9 EC |
2537 | INIT_LIST_HEAD(&dma_ctrlr->pending); |
2538 | INIT_LIST_HEAD(&dma_ctrlr->running); | |
2539 | list_add_tail(&dma_ctrlr->list, | |
2540 | &tsi148_bridge->dma_resources); | |
d22b8ed9 MW |
2541 | } |
2542 | ||
42fb5031 | 2543 | /* Add location monitor to list */ |
886953e9 | 2544 | INIT_LIST_HEAD(&tsi148_bridge->lm_resources); |
42fb5031 MW |
2545 | lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL); |
2546 | if (lm == NULL) { | |
2547 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
2548 | "location monitor resource structure\n"); | |
2549 | retval = -ENOMEM; | |
2550 | goto err_lm; | |
2551 | } | |
2552 | lm->parent = tsi148_bridge; | |
886953e9 | 2553 | mutex_init(&lm->mtx); |
42fb5031 MW |
2554 | lm->locked = 0; |
2555 | lm->number = 1; | |
2556 | lm->monitors = 4; | |
886953e9 | 2557 | list_add_tail(&lm->list, &tsi148_bridge->lm_resources); |
42fb5031 | 2558 | |
d22b8ed9 MW |
2559 | tsi148_bridge->slave_get = tsi148_slave_get; |
2560 | tsi148_bridge->slave_set = tsi148_slave_set; | |
2561 | tsi148_bridge->master_get = tsi148_master_get; | |
2562 | tsi148_bridge->master_set = tsi148_master_set; | |
2563 | tsi148_bridge->master_read = tsi148_master_read; | |
2564 | tsi148_bridge->master_write = tsi148_master_write; | |
2565 | tsi148_bridge->master_rmw = tsi148_master_rmw; | |
2566 | tsi148_bridge->dma_list_add = tsi148_dma_list_add; | |
2567 | tsi148_bridge->dma_list_exec = tsi148_dma_list_exec; | |
2568 | tsi148_bridge->dma_list_empty = tsi148_dma_list_empty; | |
c813f592 MW |
2569 | tsi148_bridge->irq_set = tsi148_irq_set; |
2570 | tsi148_bridge->irq_generate = tsi148_irq_generate; | |
d22b8ed9 MW |
2571 | tsi148_bridge->lm_set = tsi148_lm_set; |
2572 | tsi148_bridge->lm_get = tsi148_lm_get; | |
2573 | tsi148_bridge->lm_attach = tsi148_lm_attach; | |
2574 | tsi148_bridge->lm_detach = tsi148_lm_detach; | |
2575 | tsi148_bridge->slot_get = tsi148_slot_get; | |
7f58f025 MV |
2576 | tsi148_bridge->alloc_consistent = tsi148_alloc_consistent; |
2577 | tsi148_bridge->free_consistent = tsi148_free_consistent; | |
d22b8ed9 | 2578 | |
29848ac9 | 2579 | data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT); |
d22b8ed9 | 2580 | dev_info(&pdev->dev, "Board is%s the VME system controller\n", |
7946328f | 2581 | (data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not"); |
29848ac9 | 2582 | if (!geoid) |
638f199d MW |
2583 | dev_info(&pdev->dev, "VME geographical address is %d\n", |
2584 | data & TSI148_LCSR_VSTAT_GA_M); | |
29848ac9 | 2585 | else |
638f199d MW |
2586 | dev_info(&pdev->dev, "VME geographical address is set to %d\n", |
2587 | geoid); | |
29848ac9 | 2588 | |
d22b8ed9 MW |
2589 | dev_info(&pdev->dev, "VME Write and flush and error check is %s\n", |
2590 | err_chk ? "enabled" : "disabled"); | |
2591 | ||
4839737b | 2592 | if (tsi148_crcsr_init(tsi148_bridge, pdev)) { |
d22b8ed9 MW |
2593 | dev_err(&pdev->dev, "CR/CSR configuration failed.\n"); |
2594 | goto err_crcsr; | |
4839737b | 2595 | } |
d22b8ed9 | 2596 | |
d22b8ed9 MW |
2597 | retval = vme_register_bridge(tsi148_bridge); |
2598 | if (retval != 0) { | |
2599 | dev_err(&pdev->dev, "Chip Registration failed.\n"); | |
2600 | goto err_reg; | |
2601 | } | |
2602 | ||
29848ac9 MW |
2603 | pci_set_drvdata(pdev, tsi148_bridge); |
2604 | ||
d22b8ed9 | 2605 | /* Clear VME bus "board fail", and "power-up reset" lines */ |
29848ac9 | 2606 | data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT); |
d22b8ed9 MW |
2607 | data &= ~TSI148_LCSR_VSTAT_BRDFL; |
2608 | data |= TSI148_LCSR_VSTAT_CPURST; | |
29848ac9 | 2609 | iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT); |
d22b8ed9 MW |
2610 | |
2611 | return 0; | |
2612 | ||
d22b8ed9 | 2613 | err_reg: |
29848ac9 | 2614 | tsi148_crcsr_exit(tsi148_bridge, pdev); |
d22b8ed9 | 2615 | err_crcsr: |
42fb5031 MW |
2616 | err_lm: |
2617 | /* resources are stored in link list */ | |
b49c32ba | 2618 | list_for_each_safe(pos, n, &tsi148_bridge->lm_resources) { |
42fb5031 MW |
2619 | lm = list_entry(pos, struct vme_lm_resource, list); |
2620 | list_del(pos); | |
2621 | kfree(lm); | |
2622 | } | |
d22b8ed9 MW |
2623 | err_dma: |
2624 | /* resources are stored in link list */ | |
b49c32ba | 2625 | list_for_each_safe(pos, n, &tsi148_bridge->dma_resources) { |
d22b8ed9 MW |
2626 | dma_ctrlr = list_entry(pos, struct vme_dma_resource, list); |
2627 | list_del(pos); | |
2628 | kfree(dma_ctrlr); | |
2629 | } | |
2630 | err_slave: | |
2631 | /* resources are stored in link list */ | |
b49c32ba | 2632 | list_for_each_safe(pos, n, &tsi148_bridge->slave_resources) { |
d22b8ed9 MW |
2633 | slave_image = list_entry(pos, struct vme_slave_resource, list); |
2634 | list_del(pos); | |
2635 | kfree(slave_image); | |
2636 | } | |
2637 | err_master: | |
2638 | /* resources are stored in link list */ | |
b49c32ba | 2639 | list_for_each_safe(pos, n, &tsi148_bridge->master_resources) { |
7946328f MW |
2640 | master_image = list_entry(pos, struct vme_master_resource, |
2641 | list); | |
d22b8ed9 MW |
2642 | list_del(pos); |
2643 | kfree(master_image); | |
2644 | } | |
2645 | ||
a82ad05e | 2646 | tsi148_irq_exit(tsi148_bridge, pdev); |
d22b8ed9 MW |
2647 | err_irq: |
2648 | err_test: | |
29848ac9 | 2649 | iounmap(tsi148_device->base); |
d22b8ed9 MW |
2650 | err_remap: |
2651 | pci_release_regions(pdev); | |
2652 | err_resource: | |
2653 | pci_disable_device(pdev); | |
2654 | err_enable: | |
29848ac9 MW |
2655 | kfree(tsi148_device); |
2656 | err_driver: | |
d22b8ed9 MW |
2657 | kfree(tsi148_bridge); |
2658 | err_struct: | |
2659 | return retval; | |
2660 | ||
2661 | } | |
2662 | ||
2663 | static void tsi148_remove(struct pci_dev *pdev) | |
2664 | { | |
2665 | struct list_head *pos = NULL; | |
b558ba2f | 2666 | struct list_head *tmplist; |
d22b8ed9 MW |
2667 | struct vme_master_resource *master_image; |
2668 | struct vme_slave_resource *slave_image; | |
2669 | struct vme_dma_resource *dma_ctrlr; | |
2670 | int i; | |
29848ac9 MW |
2671 | struct tsi148_driver *bridge; |
2672 | struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev); | |
2673 | ||
2674 | bridge = tsi148_bridge->driver_priv; | |
d22b8ed9 | 2675 | |
d22b8ed9 | 2676 | |
29848ac9 | 2677 | dev_dbg(&pdev->dev, "Driver is being unloaded.\n"); |
d22b8ed9 MW |
2678 | |
2679 | /* | |
2680 | * Shutdown all inbound and outbound windows. | |
2681 | */ | |
2682 | for (i = 0; i < 8; i++) { | |
29848ac9 | 2683 | iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] + |
d22b8ed9 | 2684 | TSI148_LCSR_OFFSET_ITAT); |
29848ac9 | 2685 | iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] + |
d22b8ed9 MW |
2686 | TSI148_LCSR_OFFSET_OTAT); |
2687 | } | |
2688 | ||
2689 | /* | |
2690 | * Shutdown Location monitor. | |
2691 | */ | |
29848ac9 | 2692 | iowrite32be(0, bridge->base + TSI148_LCSR_LMAT); |
d22b8ed9 MW |
2693 | |
2694 | /* | |
2695 | * Shutdown CRG map. | |
2696 | */ | |
29848ac9 | 2697 | iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT); |
d22b8ed9 MW |
2698 | |
2699 | /* | |
2700 | * Clear error status. | |
2701 | */ | |
29848ac9 MW |
2702 | iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT); |
2703 | iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT); | |
2704 | iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT); | |
d22b8ed9 MW |
2705 | |
2706 | /* | |
2707 | * Remove VIRQ interrupt (if any) | |
2708 | */ | |
29848ac9 MW |
2709 | if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800) |
2710 | iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR); | |
d22b8ed9 | 2711 | |
d22b8ed9 MW |
2712 | /* |
2713 | * Map all Interrupts to PCI INTA | |
2714 | */ | |
29848ac9 MW |
2715 | iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1); |
2716 | iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2); | |
d22b8ed9 | 2717 | |
a82ad05e | 2718 | tsi148_irq_exit(tsi148_bridge, pdev); |
d22b8ed9 MW |
2719 | |
2720 | vme_unregister_bridge(tsi148_bridge); | |
2721 | ||
29848ac9 | 2722 | tsi148_crcsr_exit(tsi148_bridge, pdev); |
d22b8ed9 MW |
2723 | |
2724 | /* resources are stored in link list */ | |
b558ba2f | 2725 | list_for_each_safe(pos, tmplist, &tsi148_bridge->dma_resources) { |
d22b8ed9 MW |
2726 | dma_ctrlr = list_entry(pos, struct vme_dma_resource, list); |
2727 | list_del(pos); | |
2728 | kfree(dma_ctrlr); | |
2729 | } | |
2730 | ||
2731 | /* resources are stored in link list */ | |
b558ba2f | 2732 | list_for_each_safe(pos, tmplist, &tsi148_bridge->slave_resources) { |
d22b8ed9 MW |
2733 | slave_image = list_entry(pos, struct vme_slave_resource, list); |
2734 | list_del(pos); | |
2735 | kfree(slave_image); | |
2736 | } | |
2737 | ||
2738 | /* resources are stored in link list */ | |
b558ba2f | 2739 | list_for_each_safe(pos, tmplist, &tsi148_bridge->master_resources) { |
638f199d MW |
2740 | master_image = list_entry(pos, struct vme_master_resource, |
2741 | list); | |
d22b8ed9 MW |
2742 | list_del(pos); |
2743 | kfree(master_image); | |
2744 | } | |
2745 | ||
29848ac9 | 2746 | iounmap(bridge->base); |
d22b8ed9 MW |
2747 | |
2748 | pci_release_regions(pdev); | |
2749 | ||
2750 | pci_disable_device(pdev); | |
2751 | ||
29848ac9 MW |
2752 | kfree(tsi148_bridge->driver_priv); |
2753 | ||
d22b8ed9 MW |
2754 | kfree(tsi148_bridge); |
2755 | } | |
2756 | ||
2757 | static void __exit tsi148_exit(void) | |
2758 | { | |
2759 | pci_unregister_driver(&tsi148_driver); | |
d22b8ed9 MW |
2760 | } |
2761 | ||
2762 | MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes"); | |
2763 | module_param(err_chk, bool, 0); | |
2764 | ||
638f199d MW |
2765 | MODULE_PARM_DESC(geoid, "Override geographical addressing"); |
2766 | module_param(geoid, int, 0); | |
2767 | ||
d22b8ed9 MW |
2768 | MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge"); |
2769 | MODULE_LICENSE("GPL"); | |
2770 | ||
2771 | module_init(tsi148_init); | |
2772 | module_exit(tsi148_exit); |