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60479690 MW |
1 | /* |
2 | * Support for the Tundra Universe I/II VME-PCI Bridge Chips | |
3 | * | |
66bd8db5 MW |
4 | * Author: Martyn Welch <martyn.welch@ge.com> |
5 | * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc. | |
60479690 MW |
6 | * |
7 | * Based on work by Tom Armistead and Ajit Prem | |
8 | * Copyright 2004 Motorola Inc. | |
9 | * | |
10 | * Derived from ca91c042.c by Michael Wyrick | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | */ | |
17 | ||
60479690 MW |
18 | #include <linux/module.h> |
19 | #include <linux/mm.h> | |
20 | #include <linux/types.h> | |
21 | #include <linux/errno.h> | |
60479690 MW |
22 | #include <linux/pci.h> |
23 | #include <linux/dma-mapping.h> | |
24 | #include <linux/poll.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> | |
db3b9e99 | 32 | #include <linux/vme.h> |
60479690 | 33 | |
60479690 MW |
34 | #include "../vme_bridge.h" |
35 | #include "vme_ca91cx42.h" | |
36 | ||
3d0f8bc7 MW |
37 | static int ca91cx42_probe(struct pci_dev *, const struct pci_device_id *); |
38 | static void ca91cx42_remove(struct pci_dev *); | |
60479690 | 39 | |
12b2d5c0 MW |
40 | /* Module parameters */ |
41 | static int geoid; | |
42 | ||
584721ca | 43 | static const char driver_name[] = "vme_ca91cx42"; |
60479690 | 44 | |
c3a09c18 | 45 | static const struct pci_device_id ca91cx42_ids[] = { |
3d0f8bc7 MW |
46 | { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_CA91C142) }, |
47 | { }, | |
60479690 MW |
48 | }; |
49 | ||
3d0f8bc7 MW |
50 | static struct pci_driver ca91cx42_driver = { |
51 | .name = driver_name, | |
52 | .id_table = ca91cx42_ids, | |
53 | .probe = ca91cx42_probe, | |
54 | .remove = ca91cx42_remove, | |
60479690 MW |
55 | }; |
56 | ||
29848ac9 | 57 | static u32 ca91cx42_DMA_irqhandler(struct ca91cx42_driver *bridge) |
60479690 | 58 | { |
886953e9 | 59 | wake_up(&bridge->dma_queue); |
60479690 | 60 | |
3d0f8bc7 MW |
61 | return CA91CX42_LINT_DMA; |
62 | } | |
60479690 | 63 | |
29848ac9 | 64 | static u32 ca91cx42_LM_irqhandler(struct ca91cx42_driver *bridge, u32 stat) |
3d0f8bc7 MW |
65 | { |
66 | int i; | |
67 | u32 serviced = 0; | |
60479690 | 68 | |
3d0f8bc7 MW |
69 | for (i = 0; i < 4; i++) { |
70 | if (stat & CA91CX42_LINT_LM[i]) { | |
71 | /* We only enable interrupts if the callback is set */ | |
29848ac9 | 72 | bridge->lm_callback[i](i); |
3d0f8bc7 | 73 | serviced |= CA91CX42_LINT_LM[i]; |
60479690 | 74 | } |
60479690 | 75 | } |
60479690 | 76 | |
3d0f8bc7 MW |
77 | return serviced; |
78 | } | |
60479690 | 79 | |
3d0f8bc7 | 80 | /* XXX This needs to be split into 4 queues */ |
29848ac9 | 81 | static u32 ca91cx42_MB_irqhandler(struct ca91cx42_driver *bridge, int mbox_mask) |
3d0f8bc7 | 82 | { |
886953e9 | 83 | wake_up(&bridge->mbox_queue); |
60479690 | 84 | |
3d0f8bc7 MW |
85 | return CA91CX42_LINT_MBOX; |
86 | } | |
60479690 | 87 | |
29848ac9 | 88 | static u32 ca91cx42_IACK_irqhandler(struct ca91cx42_driver *bridge) |
3d0f8bc7 | 89 | { |
886953e9 | 90 | wake_up(&bridge->iack_queue); |
60479690 | 91 | |
3d0f8bc7 | 92 | return CA91CX42_LINT_SW_IACK; |
60479690 MW |
93 | } |
94 | ||
48d9356e | 95 | static u32 ca91cx42_VERR_irqhandler(struct vme_bridge *ca91cx42_bridge) |
60479690 MW |
96 | { |
97 | int val; | |
48d9356e MW |
98 | struct ca91cx42_driver *bridge; |
99 | ||
100 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 101 | |
29848ac9 | 102 | val = ioread32(bridge->base + DGCS); |
60479690 MW |
103 | |
104 | if (!(val & 0x00000800)) { | |
48d9356e MW |
105 | dev_err(ca91cx42_bridge->parent, "ca91cx42_VERR_irqhandler DMA " |
106 | "Read Error DGCS=%08X\n", val); | |
60479690 | 107 | } |
3d0f8bc7 MW |
108 | |
109 | return CA91CX42_LINT_VERR; | |
60479690 MW |
110 | } |
111 | ||
48d9356e | 112 | static u32 ca91cx42_LERR_irqhandler(struct vme_bridge *ca91cx42_bridge) |
60479690 MW |
113 | { |
114 | int val; | |
48d9356e | 115 | struct ca91cx42_driver *bridge; |
60479690 | 116 | |
48d9356e | 117 | bridge = ca91cx42_bridge->driver_priv; |
60479690 | 118 | |
48d9356e | 119 | val = ioread32(bridge->base + DGCS); |
60479690 | 120 | |
48d9356e MW |
121 | if (!(val & 0x00000800)) |
122 | dev_err(ca91cx42_bridge->parent, "ca91cx42_LERR_irqhandler DMA " | |
123 | "Read Error DGCS=%08X\n", val); | |
60479690 | 124 | |
3d0f8bc7 | 125 | return CA91CX42_LINT_LERR; |
60479690 MW |
126 | } |
127 | ||
3d0f8bc7 | 128 | |
29848ac9 MW |
129 | static u32 ca91cx42_VIRQ_irqhandler(struct vme_bridge *ca91cx42_bridge, |
130 | int stat) | |
60479690 | 131 | { |
3d0f8bc7 | 132 | int vec, i, serviced = 0; |
29848ac9 MW |
133 | struct ca91cx42_driver *bridge; |
134 | ||
135 | bridge = ca91cx42_bridge->driver_priv; | |
136 | ||
60479690 MW |
137 | |
138 | for (i = 7; i > 0; i--) { | |
3d0f8bc7 | 139 | if (stat & (1 << i)) { |
29848ac9 | 140 | vec = ioread32(bridge->base + |
3d0f8bc7 MW |
141 | CA91CX42_V_STATID[i]) & 0xff; |
142 | ||
c813f592 | 143 | vme_irq_handler(ca91cx42_bridge, i, vec); |
3d0f8bc7 MW |
144 | |
145 | serviced |= (1 << i); | |
60479690 MW |
146 | } |
147 | } | |
3d0f8bc7 MW |
148 | |
149 | return serviced; | |
60479690 MW |
150 | } |
151 | ||
29848ac9 | 152 | static irqreturn_t ca91cx42_irqhandler(int irq, void *ptr) |
60479690 | 153 | { |
3d0f8bc7 | 154 | u32 stat, enable, serviced = 0; |
29848ac9 MW |
155 | struct vme_bridge *ca91cx42_bridge; |
156 | struct ca91cx42_driver *bridge; | |
60479690 | 157 | |
29848ac9 | 158 | ca91cx42_bridge = ptr; |
60479690 | 159 | |
29848ac9 MW |
160 | bridge = ca91cx42_bridge->driver_priv; |
161 | ||
162 | enable = ioread32(bridge->base + LINT_EN); | |
163 | stat = ioread32(bridge->base + LINT_STAT); | |
60479690 | 164 | |
3d0f8bc7 MW |
165 | /* Only look at unmasked interrupts */ |
166 | stat &= enable; | |
167 | ||
168 | if (unlikely(!stat)) | |
169 | return IRQ_NONE; | |
170 | ||
171 | if (stat & CA91CX42_LINT_DMA) | |
29848ac9 | 172 | serviced |= ca91cx42_DMA_irqhandler(bridge); |
3d0f8bc7 MW |
173 | if (stat & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 | |
174 | CA91CX42_LINT_LM3)) | |
29848ac9 | 175 | serviced |= ca91cx42_LM_irqhandler(bridge, stat); |
3d0f8bc7 | 176 | if (stat & CA91CX42_LINT_MBOX) |
29848ac9 | 177 | serviced |= ca91cx42_MB_irqhandler(bridge, stat); |
3d0f8bc7 | 178 | if (stat & CA91CX42_LINT_SW_IACK) |
29848ac9 | 179 | serviced |= ca91cx42_IACK_irqhandler(bridge); |
3d0f8bc7 | 180 | if (stat & CA91CX42_LINT_VERR) |
48d9356e | 181 | serviced |= ca91cx42_VERR_irqhandler(ca91cx42_bridge); |
3d0f8bc7 | 182 | if (stat & CA91CX42_LINT_LERR) |
48d9356e | 183 | serviced |= ca91cx42_LERR_irqhandler(ca91cx42_bridge); |
3d0f8bc7 MW |
184 | if (stat & (CA91CX42_LINT_VIRQ1 | CA91CX42_LINT_VIRQ2 | |
185 | CA91CX42_LINT_VIRQ3 | CA91CX42_LINT_VIRQ4 | | |
186 | CA91CX42_LINT_VIRQ5 | CA91CX42_LINT_VIRQ6 | | |
187 | CA91CX42_LINT_VIRQ7)) | |
29848ac9 | 188 | serviced |= ca91cx42_VIRQ_irqhandler(ca91cx42_bridge, stat); |
3d0f8bc7 MW |
189 | |
190 | /* Clear serviced interrupts */ | |
56fc5081 | 191 | iowrite32(serviced, bridge->base + LINT_STAT); |
60479690 MW |
192 | |
193 | return IRQ_HANDLED; | |
194 | } | |
195 | ||
29848ac9 | 196 | static int ca91cx42_irq_init(struct vme_bridge *ca91cx42_bridge) |
60479690 | 197 | { |
3d0f8bc7 MW |
198 | int result, tmp; |
199 | struct pci_dev *pdev; | |
29848ac9 MW |
200 | struct ca91cx42_driver *bridge; |
201 | ||
202 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 203 | |
3d0f8bc7 | 204 | /* Need pdev */ |
29848ac9 | 205 | pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev); |
60479690 | 206 | |
0b049662 | 207 | INIT_LIST_HEAD(&ca91cx42_bridge->vme_error_handlers); |
60479690 | 208 | |
886953e9 | 209 | mutex_init(&ca91cx42_bridge->irq_mtx); |
c813f592 | 210 | |
3d0f8bc7 MW |
211 | /* Disable interrupts from PCI to VME */ |
212 | iowrite32(0, bridge->base + VINT_EN); | |
60479690 | 213 | |
3d0f8bc7 MW |
214 | /* Disable PCI interrupts */ |
215 | iowrite32(0, bridge->base + LINT_EN); | |
216 | /* Clear Any Pending PCI Interrupts */ | |
217 | iowrite32(0x00FFFFFF, bridge->base + LINT_STAT); | |
60479690 | 218 | |
3d0f8bc7 | 219 | result = request_irq(pdev->irq, ca91cx42_irqhandler, IRQF_SHARED, |
29848ac9 | 220 | driver_name, ca91cx42_bridge); |
3d0f8bc7 MW |
221 | if (result) { |
222 | dev_err(&pdev->dev, "Can't get assigned pci irq vector %02X\n", | |
223 | pdev->irq); | |
224 | return result; | |
60479690 MW |
225 | } |
226 | ||
3d0f8bc7 MW |
227 | /* Ensure all interrupts are mapped to PCI Interrupt 0 */ |
228 | iowrite32(0, bridge->base + LINT_MAP0); | |
229 | iowrite32(0, bridge->base + LINT_MAP1); | |
230 | iowrite32(0, bridge->base + LINT_MAP2); | |
231 | ||
232 | /* Enable DMA, mailbox & LM Interrupts */ | |
233 | tmp = CA91CX42_LINT_MBOX3 | CA91CX42_LINT_MBOX2 | CA91CX42_LINT_MBOX1 | | |
234 | CA91CX42_LINT_MBOX0 | CA91CX42_LINT_SW_IACK | | |
235 | CA91CX42_LINT_VERR | CA91CX42_LINT_LERR | CA91CX42_LINT_DMA; | |
236 | ||
237 | iowrite32(tmp, bridge->base + LINT_EN); | |
60479690 | 238 | |
3d0f8bc7 | 239 | return 0; |
60479690 MW |
240 | } |
241 | ||
29848ac9 MW |
242 | static void ca91cx42_irq_exit(struct ca91cx42_driver *bridge, |
243 | struct pci_dev *pdev) | |
60479690 | 244 | { |
ef22d576 WY |
245 | struct vme_bridge *ca91cx42_bridge; |
246 | ||
3d0f8bc7 | 247 | /* Disable interrupts from PCI to VME */ |
29848ac9 | 248 | iowrite32(0, bridge->base + VINT_EN); |
60479690 | 249 | |
3d0f8bc7 | 250 | /* Disable PCI interrupts */ |
29848ac9 | 251 | iowrite32(0, bridge->base + LINT_EN); |
3d0f8bc7 | 252 | /* Clear Any Pending PCI Interrupts */ |
29848ac9 | 253 | iowrite32(0x00FFFFFF, bridge->base + LINT_STAT); |
60479690 | 254 | |
ef22d576 WY |
255 | ca91cx42_bridge = container_of((void *)bridge, struct vme_bridge, |
256 | driver_priv); | |
257 | free_irq(pdev->irq, ca91cx42_bridge); | |
3d0f8bc7 | 258 | } |
60479690 | 259 | |
54b4a779 VB |
260 | static int ca91cx42_iack_received(struct ca91cx42_driver *bridge, int level) |
261 | { | |
262 | u32 tmp; | |
263 | ||
264 | tmp = ioread32(bridge->base + LINT_STAT); | |
265 | ||
266 | if (tmp & (1 << level)) | |
267 | return 0; | |
268 | else | |
269 | return 1; | |
270 | } | |
271 | ||
3d0f8bc7 MW |
272 | /* |
273 | * Set up an VME interrupt | |
274 | */ | |
efbb979d EC |
275 | static void ca91cx42_irq_set(struct vme_bridge *ca91cx42_bridge, int level, |
276 | int state, int sync) | |
c813f592 | 277 | |
3d0f8bc7 | 278 | { |
c813f592 | 279 | struct pci_dev *pdev; |
3d0f8bc7 | 280 | u32 tmp; |
29848ac9 MW |
281 | struct ca91cx42_driver *bridge; |
282 | ||
283 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 284 | |
3d0f8bc7 | 285 | /* Enable IRQ level */ |
29848ac9 | 286 | tmp = ioread32(bridge->base + LINT_EN); |
3d0f8bc7 | 287 | |
c813f592 | 288 | if (state == 0) |
3d0f8bc7 | 289 | tmp &= ~CA91CX42_LINT_VIRQ[level]; |
c813f592 MW |
290 | else |
291 | tmp |= CA91CX42_LINT_VIRQ[level]; | |
60479690 | 292 | |
29848ac9 | 293 | iowrite32(tmp, bridge->base + LINT_EN); |
c813f592 MW |
294 | |
295 | if ((state == 0) && (sync != 0)) { | |
3d0f8bc7 MW |
296 | pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, |
297 | dev); | |
298 | ||
299 | synchronize_irq(pdev->irq); | |
60479690 | 300 | } |
60479690 MW |
301 | } |
302 | ||
efbb979d | 303 | static int ca91cx42_irq_generate(struct vme_bridge *ca91cx42_bridge, int level, |
29848ac9 | 304 | int statid) |
60479690 | 305 | { |
3d0f8bc7 | 306 | u32 tmp; |
29848ac9 MW |
307 | struct ca91cx42_driver *bridge; |
308 | ||
309 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 310 | |
3d0f8bc7 MW |
311 | /* Universe can only generate even vectors */ |
312 | if (statid & 1) | |
313 | return -EINVAL; | |
60479690 | 314 | |
886953e9 | 315 | mutex_lock(&bridge->vme_int); |
60479690 | 316 | |
29848ac9 | 317 | tmp = ioread32(bridge->base + VINT_EN); |
60479690 | 318 | |
3d0f8bc7 | 319 | /* Set Status/ID */ |
29848ac9 | 320 | iowrite32(statid << 24, bridge->base + STATID); |
3d0f8bc7 MW |
321 | |
322 | /* Assert VMEbus IRQ */ | |
323 | tmp = tmp | (1 << (level + 24)); | |
29848ac9 | 324 | iowrite32(tmp, bridge->base + VINT_EN); |
60479690 | 325 | |
3d0f8bc7 | 326 | /* Wait for IACK */ |
54b4a779 VB |
327 | wait_event_interruptible(bridge->iack_queue, |
328 | ca91cx42_iack_received(bridge, level)); | |
3d0f8bc7 MW |
329 | |
330 | /* Return interrupt to low state */ | |
29848ac9 | 331 | tmp = ioread32(bridge->base + VINT_EN); |
3d0f8bc7 | 332 | tmp = tmp & ~(1 << (level + 24)); |
29848ac9 | 333 | iowrite32(tmp, bridge->base + VINT_EN); |
3d0f8bc7 | 334 | |
886953e9 | 335 | mutex_unlock(&bridge->vme_int); |
3d0f8bc7 MW |
336 | |
337 | return 0; | |
60479690 MW |
338 | } |
339 | ||
efbb979d | 340 | static int ca91cx42_slave_set(struct vme_slave_resource *image, int enabled, |
3d0f8bc7 | 341 | unsigned long long vme_base, unsigned long long size, |
6af04b06 | 342 | dma_addr_t pci_base, u32 aspace, u32 cycle) |
60479690 | 343 | { |
21e0cf6d | 344 | unsigned int i, addr = 0, granularity; |
3d0f8bc7 MW |
345 | unsigned int temp_ctl = 0; |
346 | unsigned int vme_bound, pci_offset; | |
48d9356e | 347 | struct vme_bridge *ca91cx42_bridge; |
29848ac9 MW |
348 | struct ca91cx42_driver *bridge; |
349 | ||
48d9356e MW |
350 | ca91cx42_bridge = image->parent; |
351 | ||
352 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 353 | |
3d0f8bc7 | 354 | i = image->number; |
60479690 | 355 | |
3d0f8bc7 MW |
356 | switch (aspace) { |
357 | case VME_A16: | |
358 | addr |= CA91CX42_VSI_CTL_VAS_A16; | |
359 | break; | |
360 | case VME_A24: | |
361 | addr |= CA91CX42_VSI_CTL_VAS_A24; | |
362 | break; | |
363 | case VME_A32: | |
364 | addr |= CA91CX42_VSI_CTL_VAS_A32; | |
365 | break; | |
366 | case VME_USER1: | |
367 | addr |= CA91CX42_VSI_CTL_VAS_USER1; | |
368 | break; | |
369 | case VME_USER2: | |
370 | addr |= CA91CX42_VSI_CTL_VAS_USER2; | |
371 | break; | |
372 | case VME_A64: | |
373 | case VME_CRCSR: | |
374 | case VME_USER3: | |
375 | case VME_USER4: | |
376 | default: | |
48d9356e | 377 | dev_err(ca91cx42_bridge->parent, "Invalid address space\n"); |
3d0f8bc7 MW |
378 | return -EINVAL; |
379 | break; | |
60479690 MW |
380 | } |
381 | ||
3d0f8bc7 MW |
382 | /* |
383 | * Bound address is a valid address for the window, adjust | |
384 | * accordingly | |
385 | */ | |
21e0cf6d | 386 | vme_bound = vme_base + size; |
3d0f8bc7 MW |
387 | pci_offset = pci_base - vme_base; |
388 | ||
3d0f8bc7 MW |
389 | if ((i == 0) || (i == 4)) |
390 | granularity = 0x1000; | |
391 | else | |
392 | granularity = 0x10000; | |
393 | ||
394 | if (vme_base & (granularity - 1)) { | |
48d9356e MW |
395 | dev_err(ca91cx42_bridge->parent, "Invalid VME base " |
396 | "alignment\n"); | |
3d0f8bc7 MW |
397 | return -EINVAL; |
398 | } | |
399 | if (vme_bound & (granularity - 1)) { | |
48d9356e MW |
400 | dev_err(ca91cx42_bridge->parent, "Invalid VME bound " |
401 | "alignment\n"); | |
3d0f8bc7 MW |
402 | return -EINVAL; |
403 | } | |
404 | if (pci_offset & (granularity - 1)) { | |
48d9356e MW |
405 | dev_err(ca91cx42_bridge->parent, "Invalid PCI Offset " |
406 | "alignment\n"); | |
3d0f8bc7 | 407 | return -EINVAL; |
60479690 MW |
408 | } |
409 | ||
3d0f8bc7 | 410 | /* Disable while we are mucking around */ |
29848ac9 | 411 | temp_ctl = ioread32(bridge->base + CA91CX42_VSI_CTL[i]); |
3d0f8bc7 | 412 | temp_ctl &= ~CA91CX42_VSI_CTL_EN; |
29848ac9 | 413 | iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]); |
60479690 | 414 | |
3d0f8bc7 | 415 | /* Setup mapping */ |
29848ac9 MW |
416 | iowrite32(vme_base, bridge->base + CA91CX42_VSI_BS[i]); |
417 | iowrite32(vme_bound, bridge->base + CA91CX42_VSI_BD[i]); | |
418 | iowrite32(pci_offset, bridge->base + CA91CX42_VSI_TO[i]); | |
3d0f8bc7 | 419 | |
3d0f8bc7 MW |
420 | /* Setup address space */ |
421 | temp_ctl &= ~CA91CX42_VSI_CTL_VAS_M; | |
422 | temp_ctl |= addr; | |
423 | ||
424 | /* Setup cycle types */ | |
425 | temp_ctl &= ~(CA91CX42_VSI_CTL_PGM_M | CA91CX42_VSI_CTL_SUPER_M); | |
426 | if (cycle & VME_SUPER) | |
427 | temp_ctl |= CA91CX42_VSI_CTL_SUPER_SUPR; | |
428 | if (cycle & VME_USER) | |
429 | temp_ctl |= CA91CX42_VSI_CTL_SUPER_NPRIV; | |
430 | if (cycle & VME_PROG) | |
431 | temp_ctl |= CA91CX42_VSI_CTL_PGM_PGM; | |
432 | if (cycle & VME_DATA) | |
433 | temp_ctl |= CA91CX42_VSI_CTL_PGM_DATA; | |
434 | ||
435 | /* Write ctl reg without enable */ | |
29848ac9 | 436 | iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]); |
3d0f8bc7 MW |
437 | |
438 | if (enabled) | |
439 | temp_ctl |= CA91CX42_VSI_CTL_EN; | |
440 | ||
29848ac9 | 441 | iowrite32(temp_ctl, bridge->base + CA91CX42_VSI_CTL[i]); |
3d0f8bc7 MW |
442 | |
443 | return 0; | |
60479690 MW |
444 | } |
445 | ||
efbb979d | 446 | static int ca91cx42_slave_get(struct vme_slave_resource *image, int *enabled, |
3d0f8bc7 | 447 | unsigned long long *vme_base, unsigned long long *size, |
6af04b06 | 448 | dma_addr_t *pci_base, u32 *aspace, u32 *cycle) |
60479690 | 449 | { |
3d0f8bc7 MW |
450 | unsigned int i, granularity = 0, ctl = 0; |
451 | unsigned long long vme_bound, pci_offset; | |
29848ac9 MW |
452 | struct ca91cx42_driver *bridge; |
453 | ||
454 | bridge = image->parent->driver_priv; | |
3d0f8bc7 MW |
455 | |
456 | i = image->number; | |
60479690 | 457 | |
3d0f8bc7 MW |
458 | if ((i == 0) || (i == 4)) |
459 | granularity = 0x1000; | |
460 | else | |
461 | granularity = 0x10000; | |
462 | ||
463 | /* Read Registers */ | |
29848ac9 | 464 | ctl = ioread32(bridge->base + CA91CX42_VSI_CTL[i]); |
3d0f8bc7 | 465 | |
29848ac9 MW |
466 | *vme_base = ioread32(bridge->base + CA91CX42_VSI_BS[i]); |
467 | vme_bound = ioread32(bridge->base + CA91CX42_VSI_BD[i]); | |
468 | pci_offset = ioread32(bridge->base + CA91CX42_VSI_TO[i]); | |
3d0f8bc7 MW |
469 | |
470 | *pci_base = (dma_addr_t)vme_base + pci_offset; | |
471 | *size = (unsigned long long)((vme_bound - *vme_base) + granularity); | |
472 | ||
473 | *enabled = 0; | |
474 | *aspace = 0; | |
475 | *cycle = 0; | |
476 | ||
477 | if (ctl & CA91CX42_VSI_CTL_EN) | |
478 | *enabled = 1; | |
479 | ||
480 | if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A16) | |
481 | *aspace = VME_A16; | |
482 | if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A24) | |
483 | *aspace = VME_A24; | |
484 | if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_A32) | |
485 | *aspace = VME_A32; | |
486 | if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_USER1) | |
487 | *aspace = VME_USER1; | |
488 | if ((ctl & CA91CX42_VSI_CTL_VAS_M) == CA91CX42_VSI_CTL_VAS_USER2) | |
489 | *aspace = VME_USER2; | |
490 | ||
491 | if (ctl & CA91CX42_VSI_CTL_SUPER_SUPR) | |
492 | *cycle |= VME_SUPER; | |
493 | if (ctl & CA91CX42_VSI_CTL_SUPER_NPRIV) | |
494 | *cycle |= VME_USER; | |
495 | if (ctl & CA91CX42_VSI_CTL_PGM_PGM) | |
496 | *cycle |= VME_PROG; | |
497 | if (ctl & CA91CX42_VSI_CTL_PGM_DATA) | |
498 | *cycle |= VME_DATA; | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | /* | |
504 | * Allocate and map PCI Resource | |
505 | */ | |
506 | static int ca91cx42_alloc_resource(struct vme_master_resource *image, | |
507 | unsigned long long size) | |
508 | { | |
509 | unsigned long long existing_size; | |
510 | int retval = 0; | |
511 | struct pci_dev *pdev; | |
29848ac9 MW |
512 | struct vme_bridge *ca91cx42_bridge; |
513 | ||
514 | ca91cx42_bridge = image->parent; | |
3d0f8bc7 MW |
515 | |
516 | /* Find pci_dev container of dev */ | |
517 | if (ca91cx42_bridge->parent == NULL) { | |
48d9356e | 518 | dev_err(ca91cx42_bridge->parent, "Dev entry NULL\n"); |
3d0f8bc7 MW |
519 | return -EINVAL; |
520 | } | |
521 | pdev = container_of(ca91cx42_bridge->parent, struct pci_dev, dev); | |
522 | ||
8fafb476 MW |
523 | existing_size = (unsigned long long)(image->bus_resource.end - |
524 | image->bus_resource.start); | |
3d0f8bc7 MW |
525 | |
526 | /* If the existing size is OK, return */ | |
527 | if (existing_size == (size - 1)) | |
528 | return 0; | |
529 | ||
530 | if (existing_size != 0) { | |
531 | iounmap(image->kern_base); | |
532 | image->kern_base = NULL; | |
794a8946 | 533 | kfree(image->bus_resource.name); |
886953e9 EC |
534 | release_resource(&image->bus_resource); |
535 | memset(&image->bus_resource, 0, sizeof(struct resource)); | |
3d0f8bc7 MW |
536 | } |
537 | ||
8fafb476 | 538 | if (image->bus_resource.name == NULL) { |
0aa3f139 | 539 | image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC); |
8fafb476 | 540 | if (image->bus_resource.name == NULL) { |
48d9356e MW |
541 | dev_err(ca91cx42_bridge->parent, "Unable to allocate " |
542 | "memory for resource name\n"); | |
3d0f8bc7 MW |
543 | retval = -ENOMEM; |
544 | goto err_name; | |
545 | } | |
60479690 | 546 | } |
3d0f8bc7 | 547 | |
8fafb476 | 548 | sprintf((char *)image->bus_resource.name, "%s.%d", |
3d0f8bc7 MW |
549 | ca91cx42_bridge->name, image->number); |
550 | ||
8fafb476 MW |
551 | image->bus_resource.start = 0; |
552 | image->bus_resource.end = (unsigned long)size; | |
553 | image->bus_resource.flags = IORESOURCE_MEM; | |
3d0f8bc7 MW |
554 | |
555 | retval = pci_bus_alloc_resource(pdev->bus, | |
da5ae8a9 | 556 | &image->bus_resource, size, 0x10000, PCIBIOS_MIN_MEM, |
3d0f8bc7 MW |
557 | 0, NULL, NULL); |
558 | if (retval) { | |
48d9356e MW |
559 | dev_err(ca91cx42_bridge->parent, "Failed to allocate mem " |
560 | "resource for window %d size 0x%lx start 0x%lx\n", | |
3d0f8bc7 | 561 | image->number, (unsigned long)size, |
8fafb476 | 562 | (unsigned long)image->bus_resource.start); |
3d0f8bc7 | 563 | goto err_resource; |
60479690 | 564 | } |
3d0f8bc7 MW |
565 | |
566 | image->kern_base = ioremap_nocache( | |
8fafb476 | 567 | image->bus_resource.start, size); |
3d0f8bc7 | 568 | if (image->kern_base == NULL) { |
48d9356e | 569 | dev_err(ca91cx42_bridge->parent, "Failed to remap resource\n"); |
3d0f8bc7 MW |
570 | retval = -ENOMEM; |
571 | goto err_remap; | |
60479690 MW |
572 | } |
573 | ||
3d0f8bc7 MW |
574 | return 0; |
575 | ||
3d0f8bc7 | 576 | err_remap: |
886953e9 | 577 | release_resource(&image->bus_resource); |
3d0f8bc7 | 578 | err_resource: |
8fafb476 | 579 | kfree(image->bus_resource.name); |
886953e9 | 580 | memset(&image->bus_resource, 0, sizeof(struct resource)); |
3d0f8bc7 MW |
581 | err_name: |
582 | return retval; | |
583 | } | |
584 | ||
585 | /* | |
4860ab74 MW |
586 | * Free and unmap PCI Resource |
587 | */ | |
3d0f8bc7 MW |
588 | static void ca91cx42_free_resource(struct vme_master_resource *image) |
589 | { | |
590 | iounmap(image->kern_base); | |
591 | image->kern_base = NULL; | |
886953e9 | 592 | release_resource(&image->bus_resource); |
8fafb476 | 593 | kfree(image->bus_resource.name); |
886953e9 | 594 | memset(&image->bus_resource, 0, sizeof(struct resource)); |
3d0f8bc7 MW |
595 | } |
596 | ||
597 | ||
efbb979d | 598 | static int ca91cx42_master_set(struct vme_master_resource *image, int enabled, |
6af04b06 MW |
599 | unsigned long long vme_base, unsigned long long size, u32 aspace, |
600 | u32 cycle, u32 dwidth) | |
3d0f8bc7 MW |
601 | { |
602 | int retval = 0; | |
21e0cf6d | 603 | unsigned int i, granularity = 0; |
3d0f8bc7 MW |
604 | unsigned int temp_ctl = 0; |
605 | unsigned long long pci_bound, vme_offset, pci_base; | |
48d9356e | 606 | struct vme_bridge *ca91cx42_bridge; |
29848ac9 MW |
607 | struct ca91cx42_driver *bridge; |
608 | ||
48d9356e MW |
609 | ca91cx42_bridge = image->parent; |
610 | ||
611 | bridge = ca91cx42_bridge->driver_priv; | |
3d0f8bc7 | 612 | |
21e0cf6d MW |
613 | i = image->number; |
614 | ||
615 | if ((i == 0) || (i == 4)) | |
616 | granularity = 0x1000; | |
617 | else | |
618 | granularity = 0x10000; | |
619 | ||
3d0f8bc7 | 620 | /* Verify input data */ |
21e0cf6d | 621 | if (vme_base & (granularity - 1)) { |
48d9356e MW |
622 | dev_err(ca91cx42_bridge->parent, "Invalid VME Window " |
623 | "alignment\n"); | |
3d0f8bc7 MW |
624 | retval = -EINVAL; |
625 | goto err_window; | |
626 | } | |
21e0cf6d | 627 | if (size & (granularity - 1)) { |
48d9356e MW |
628 | dev_err(ca91cx42_bridge->parent, "Invalid VME Window " |
629 | "alignment\n"); | |
3d0f8bc7 MW |
630 | retval = -EINVAL; |
631 | goto err_window; | |
632 | } | |
633 | ||
886953e9 | 634 | spin_lock(&image->lock); |
3d0f8bc7 | 635 | |
3d0f8bc7 MW |
636 | /* |
637 | * Let's allocate the resource here rather than further up the stack as | |
25985edc | 638 | * it avoids pushing loads of bus dependent stuff up the stack |
3d0f8bc7 MW |
639 | */ |
640 | retval = ca91cx42_alloc_resource(image, size); | |
641 | if (retval) { | |
886953e9 | 642 | spin_unlock(&image->lock); |
48d9356e MW |
643 | dev_err(ca91cx42_bridge->parent, "Unable to allocate memory " |
644 | "for resource name\n"); | |
3d0f8bc7 MW |
645 | retval = -ENOMEM; |
646 | goto err_res; | |
647 | } | |
648 | ||
8fafb476 | 649 | pci_base = (unsigned long long)image->bus_resource.start; |
3d0f8bc7 MW |
650 | |
651 | /* | |
652 | * Bound address is a valid address for the window, adjust | |
653 | * according to window granularity. | |
654 | */ | |
21e0cf6d | 655 | pci_bound = pci_base + size; |
3d0f8bc7 MW |
656 | vme_offset = vme_base - pci_base; |
657 | ||
3d0f8bc7 | 658 | /* Disable while we are mucking around */ |
29848ac9 | 659 | temp_ctl = ioread32(bridge->base + CA91CX42_LSI_CTL[i]); |
3d0f8bc7 | 660 | temp_ctl &= ~CA91CX42_LSI_CTL_EN; |
29848ac9 | 661 | iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]); |
3d0f8bc7 | 662 | |
3d0f8bc7 MW |
663 | /* Setup cycle types */ |
664 | temp_ctl &= ~CA91CX42_LSI_CTL_VCT_M; | |
665 | if (cycle & VME_BLT) | |
666 | temp_ctl |= CA91CX42_LSI_CTL_VCT_BLT; | |
667 | if (cycle & VME_MBLT) | |
668 | temp_ctl |= CA91CX42_LSI_CTL_VCT_MBLT; | |
669 | ||
670 | /* Setup data width */ | |
671 | temp_ctl &= ~CA91CX42_LSI_CTL_VDW_M; | |
672 | switch (dwidth) { | |
673 | case VME_D8: | |
674 | temp_ctl |= CA91CX42_LSI_CTL_VDW_D8; | |
675 | break; | |
676 | case VME_D16: | |
677 | temp_ctl |= CA91CX42_LSI_CTL_VDW_D16; | |
678 | break; | |
679 | case VME_D32: | |
680 | temp_ctl |= CA91CX42_LSI_CTL_VDW_D32; | |
681 | break; | |
682 | case VME_D64: | |
683 | temp_ctl |= CA91CX42_LSI_CTL_VDW_D64; | |
684 | break; | |
685 | default: | |
886953e9 | 686 | spin_unlock(&image->lock); |
48d9356e | 687 | dev_err(ca91cx42_bridge->parent, "Invalid data width\n"); |
3d0f8bc7 MW |
688 | retval = -EINVAL; |
689 | goto err_dwidth; | |
690 | break; | |
60479690 | 691 | } |
3d0f8bc7 MW |
692 | |
693 | /* Setup address space */ | |
694 | temp_ctl &= ~CA91CX42_LSI_CTL_VAS_M; | |
695 | switch (aspace) { | |
60479690 | 696 | case VME_A16: |
3d0f8bc7 | 697 | temp_ctl |= CA91CX42_LSI_CTL_VAS_A16; |
60479690 MW |
698 | break; |
699 | case VME_A24: | |
3d0f8bc7 | 700 | temp_ctl |= CA91CX42_LSI_CTL_VAS_A24; |
60479690 MW |
701 | break; |
702 | case VME_A32: | |
3d0f8bc7 MW |
703 | temp_ctl |= CA91CX42_LSI_CTL_VAS_A32; |
704 | break; | |
705 | case VME_CRCSR: | |
706 | temp_ctl |= CA91CX42_LSI_CTL_VAS_CRCSR; | |
60479690 MW |
707 | break; |
708 | case VME_USER1: | |
3d0f8bc7 | 709 | temp_ctl |= CA91CX42_LSI_CTL_VAS_USER1; |
60479690 MW |
710 | break; |
711 | case VME_USER2: | |
3d0f8bc7 MW |
712 | temp_ctl |= CA91CX42_LSI_CTL_VAS_USER2; |
713 | break; | |
714 | case VME_A64: | |
715 | case VME_USER3: | |
716 | case VME_USER4: | |
717 | default: | |
886953e9 | 718 | spin_unlock(&image->lock); |
48d9356e | 719 | dev_err(ca91cx42_bridge->parent, "Invalid address space\n"); |
3d0f8bc7 MW |
720 | retval = -EINVAL; |
721 | goto err_aspace; | |
60479690 MW |
722 | break; |
723 | } | |
724 | ||
3d0f8bc7 MW |
725 | temp_ctl &= ~(CA91CX42_LSI_CTL_PGM_M | CA91CX42_LSI_CTL_SUPER_M); |
726 | if (cycle & VME_SUPER) | |
727 | temp_ctl |= CA91CX42_LSI_CTL_SUPER_SUPR; | |
728 | if (cycle & VME_PROG) | |
729 | temp_ctl |= CA91CX42_LSI_CTL_PGM_PGM; | |
60479690 | 730 | |
3d0f8bc7 | 731 | /* Setup mapping */ |
29848ac9 MW |
732 | iowrite32(pci_base, bridge->base + CA91CX42_LSI_BS[i]); |
733 | iowrite32(pci_bound, bridge->base + CA91CX42_LSI_BD[i]); | |
734 | iowrite32(vme_offset, bridge->base + CA91CX42_LSI_TO[i]); | |
3d0f8bc7 MW |
735 | |
736 | /* Write ctl reg without enable */ | |
29848ac9 | 737 | iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]); |
3d0f8bc7 MW |
738 | |
739 | if (enabled) | |
740 | temp_ctl |= CA91CX42_LSI_CTL_EN; | |
741 | ||
29848ac9 | 742 | iowrite32(temp_ctl, bridge->base + CA91CX42_LSI_CTL[i]); |
3d0f8bc7 | 743 | |
886953e9 | 744 | spin_unlock(&image->lock); |
3d0f8bc7 MW |
745 | return 0; |
746 | ||
747 | err_aspace: | |
748 | err_dwidth: | |
749 | ca91cx42_free_resource(image); | |
750 | err_res: | |
751 | err_window: | |
752 | return retval; | |
753 | } | |
754 | ||
efbb979d EC |
755 | static int __ca91cx42_master_get(struct vme_master_resource *image, |
756 | int *enabled, unsigned long long *vme_base, unsigned long long *size, | |
6af04b06 | 757 | u32 *aspace, u32 *cycle, u32 *dwidth) |
3d0f8bc7 MW |
758 | { |
759 | unsigned int i, ctl; | |
760 | unsigned long long pci_base, pci_bound, vme_offset; | |
29848ac9 MW |
761 | struct ca91cx42_driver *bridge; |
762 | ||
763 | bridge = image->parent->driver_priv; | |
3d0f8bc7 MW |
764 | |
765 | i = image->number; | |
766 | ||
29848ac9 | 767 | ctl = ioread32(bridge->base + CA91CX42_LSI_CTL[i]); |
3d0f8bc7 | 768 | |
29848ac9 MW |
769 | pci_base = ioread32(bridge->base + CA91CX42_LSI_BS[i]); |
770 | vme_offset = ioread32(bridge->base + CA91CX42_LSI_TO[i]); | |
771 | pci_bound = ioread32(bridge->base + CA91CX42_LSI_BD[i]); | |
3d0f8bc7 MW |
772 | |
773 | *vme_base = pci_base + vme_offset; | |
21e0cf6d | 774 | *size = (unsigned long long)(pci_bound - pci_base); |
3d0f8bc7 MW |
775 | |
776 | *enabled = 0; | |
777 | *aspace = 0; | |
778 | *cycle = 0; | |
779 | *dwidth = 0; | |
780 | ||
781 | if (ctl & CA91CX42_LSI_CTL_EN) | |
782 | *enabled = 1; | |
783 | ||
784 | /* Setup address space */ | |
785 | switch (ctl & CA91CX42_LSI_CTL_VAS_M) { | |
786 | case CA91CX42_LSI_CTL_VAS_A16: | |
787 | *aspace = VME_A16; | |
788 | break; | |
789 | case CA91CX42_LSI_CTL_VAS_A24: | |
790 | *aspace = VME_A24; | |
791 | break; | |
792 | case CA91CX42_LSI_CTL_VAS_A32: | |
793 | *aspace = VME_A32; | |
794 | break; | |
795 | case CA91CX42_LSI_CTL_VAS_CRCSR: | |
796 | *aspace = VME_CRCSR; | |
797 | break; | |
798 | case CA91CX42_LSI_CTL_VAS_USER1: | |
799 | *aspace = VME_USER1; | |
800 | break; | |
801 | case CA91CX42_LSI_CTL_VAS_USER2: | |
802 | *aspace = VME_USER2; | |
803 | break; | |
804 | } | |
805 | ||
806 | /* XXX Not sure howto check for MBLT */ | |
807 | /* Setup cycle types */ | |
808 | if (ctl & CA91CX42_LSI_CTL_VCT_BLT) | |
809 | *cycle |= VME_BLT; | |
810 | else | |
811 | *cycle |= VME_SCT; | |
812 | ||
813 | if (ctl & CA91CX42_LSI_CTL_SUPER_SUPR) | |
814 | *cycle |= VME_SUPER; | |
815 | else | |
816 | *cycle |= VME_USER; | |
817 | ||
818 | if (ctl & CA91CX42_LSI_CTL_PGM_PGM) | |
819 | *cycle = VME_PROG; | |
820 | else | |
821 | *cycle = VME_DATA; | |
822 | ||
823 | /* Setup data width */ | |
824 | switch (ctl & CA91CX42_LSI_CTL_VDW_M) { | |
825 | case CA91CX42_LSI_CTL_VDW_D8: | |
826 | *dwidth = VME_D8; | |
827 | break; | |
828 | case CA91CX42_LSI_CTL_VDW_D16: | |
829 | *dwidth = VME_D16; | |
830 | break; | |
831 | case CA91CX42_LSI_CTL_VDW_D32: | |
832 | *dwidth = VME_D32; | |
833 | break; | |
834 | case CA91CX42_LSI_CTL_VDW_D64: | |
835 | *dwidth = VME_D64; | |
836 | break; | |
837 | } | |
838 | ||
3d0f8bc7 MW |
839 | return 0; |
840 | } | |
841 | ||
efbb979d | 842 | static int ca91cx42_master_get(struct vme_master_resource *image, int *enabled, |
6af04b06 MW |
843 | unsigned long long *vme_base, unsigned long long *size, u32 *aspace, |
844 | u32 *cycle, u32 *dwidth) | |
3d0f8bc7 MW |
845 | { |
846 | int retval; | |
847 | ||
886953e9 | 848 | spin_lock(&image->lock); |
3d0f8bc7 MW |
849 | |
850 | retval = __ca91cx42_master_get(image, enabled, vme_base, size, aspace, | |
851 | cycle, dwidth); | |
852 | ||
886953e9 | 853 | spin_unlock(&image->lock); |
3d0f8bc7 MW |
854 | |
855 | return retval; | |
856 | } | |
857 | ||
efbb979d EC |
858 | static ssize_t ca91cx42_master_read(struct vme_master_resource *image, |
859 | void *buf, size_t count, loff_t offset) | |
3d0f8bc7 | 860 | { |
21e0cf6d | 861 | ssize_t retval; |
d90f32c2 | 862 | void __iomem *addr = image->kern_base + offset; |
53059aa0 AB |
863 | unsigned int done = 0; |
864 | unsigned int count32; | |
865 | ||
866 | if (count == 0) | |
867 | return 0; | |
60479690 | 868 | |
886953e9 | 869 | spin_lock(&image->lock); |
60479690 | 870 | |
a2a720e1 MW |
871 | /* The following code handles VME address alignment. We cannot use |
872 | * memcpy_xxx here because it may cut data transfers in to 8-bit | |
873 | * cycles when D16 or D32 cycles are required on the VME bus. | |
874 | * On the other hand, the bridge itself assures that the maximum data | |
875 | * cycle configured for the transfer is used and splits it | |
876 | * automatically for non-aligned addresses, so we don't want the | |
877 | * overhead of needlessly forcing small transfers for the entire cycle. | |
53059aa0 | 878 | */ |
b91a9363 | 879 | if ((uintptr_t)addr & 0x1) { |
53059aa0 AB |
880 | *(u8 *)buf = ioread8(addr); |
881 | done += 1; | |
882 | if (done == count) | |
883 | goto out; | |
884 | } | |
f0342e66 | 885 | if ((uintptr_t)(addr + done) & 0x2) { |
53059aa0 AB |
886 | if ((count - done) < 2) { |
887 | *(u8 *)(buf + done) = ioread8(addr + done); | |
888 | done += 1; | |
889 | goto out; | |
890 | } else { | |
891 | *(u16 *)(buf + done) = ioread16(addr + done); | |
892 | done += 2; | |
893 | } | |
894 | } | |
60479690 | 895 | |
53059aa0 | 896 | count32 = (count - done) & ~0x3; |
a2a720e1 MW |
897 | while (done < count32) { |
898 | *(u32 *)(buf + done) = ioread32(addr + done); | |
899 | done += 4; | |
53059aa0 AB |
900 | } |
901 | ||
902 | if ((count - done) & 0x2) { | |
903 | *(u16 *)(buf + done) = ioread16(addr + done); | |
904 | done += 2; | |
905 | } | |
906 | if ((count - done) & 0x1) { | |
907 | *(u8 *)(buf + done) = ioread8(addr + done); | |
908 | done += 1; | |
909 | } | |
910 | out: | |
911 | retval = count; | |
886953e9 | 912 | spin_unlock(&image->lock); |
3d0f8bc7 MW |
913 | |
914 | return retval; | |
60479690 MW |
915 | } |
916 | ||
efbb979d EC |
917 | static ssize_t ca91cx42_master_write(struct vme_master_resource *image, |
918 | void *buf, size_t count, loff_t offset) | |
60479690 | 919 | { |
53059aa0 | 920 | ssize_t retval; |
d90f32c2 | 921 | void __iomem *addr = image->kern_base + offset; |
53059aa0 AB |
922 | unsigned int done = 0; |
923 | unsigned int count32; | |
924 | ||
925 | if (count == 0) | |
926 | return 0; | |
60479690 | 927 | |
886953e9 | 928 | spin_lock(&image->lock); |
60479690 | 929 | |
53059aa0 | 930 | /* Here we apply for the same strategy we do in master_read |
a2a720e1 | 931 | * function in order to assure the correct cycles. |
53059aa0 | 932 | */ |
b91a9363 | 933 | if ((uintptr_t)addr & 0x1) { |
53059aa0 AB |
934 | iowrite8(*(u8 *)buf, addr); |
935 | done += 1; | |
936 | if (done == count) | |
937 | goto out; | |
938 | } | |
f0342e66 | 939 | if ((uintptr_t)(addr + done) & 0x2) { |
53059aa0 AB |
940 | if ((count - done) < 2) { |
941 | iowrite8(*(u8 *)(buf + done), addr + done); | |
942 | done += 1; | |
943 | goto out; | |
944 | } else { | |
945 | iowrite16(*(u16 *)(buf + done), addr + done); | |
946 | done += 2; | |
947 | } | |
948 | } | |
949 | ||
950 | count32 = (count - done) & ~0x3; | |
a2a720e1 MW |
951 | while (done < count32) { |
952 | iowrite32(*(u32 *)(buf + done), addr + done); | |
953 | done += 4; | |
53059aa0 AB |
954 | } |
955 | ||
956 | if ((count - done) & 0x2) { | |
957 | iowrite16(*(u16 *)(buf + done), addr + done); | |
958 | done += 2; | |
959 | } | |
960 | if ((count - done) & 0x1) { | |
961 | iowrite8(*(u8 *)(buf + done), addr + done); | |
962 | done += 1; | |
963 | } | |
964 | out: | |
3d0f8bc7 MW |
965 | retval = count; |
966 | ||
886953e9 EC |
967 | spin_unlock(&image->lock); |
968 | ||
3d0f8bc7 | 969 | return retval; |
60479690 MW |
970 | } |
971 | ||
efbb979d | 972 | static unsigned int ca91cx42_master_rmw(struct vme_master_resource *image, |
04e10e15 MW |
973 | unsigned int mask, unsigned int compare, unsigned int swap, |
974 | loff_t offset) | |
975 | { | |
b91a9363 MV |
976 | u32 result; |
977 | uintptr_t pci_addr; | |
04e10e15 MW |
978 | int i; |
979 | struct ca91cx42_driver *bridge; | |
980 | struct device *dev; | |
981 | ||
982 | bridge = image->parent->driver_priv; | |
983 | dev = image->parent->parent; | |
984 | ||
985 | /* Find the PCI address that maps to the desired VME address */ | |
986 | i = image->number; | |
987 | ||
988 | /* Locking as we can only do one of these at a time */ | |
886953e9 | 989 | mutex_lock(&bridge->vme_rmw); |
04e10e15 MW |
990 | |
991 | /* Lock image */ | |
886953e9 | 992 | spin_lock(&image->lock); |
04e10e15 | 993 | |
b91a9363 | 994 | pci_addr = (uintptr_t)image->kern_base + offset; |
04e10e15 MW |
995 | |
996 | /* Address must be 4-byte aligned */ | |
997 | if (pci_addr & 0x3) { | |
998 | dev_err(dev, "RMW Address not 4-byte aligned\n"); | |
7c0ace54 JL |
999 | result = -EINVAL; |
1000 | goto out; | |
04e10e15 MW |
1001 | } |
1002 | ||
1003 | /* Ensure RMW Disabled whilst configuring */ | |
1004 | iowrite32(0, bridge->base + SCYC_CTL); | |
1005 | ||
1006 | /* Configure registers */ | |
1007 | iowrite32(mask, bridge->base + SCYC_EN); | |
1008 | iowrite32(compare, bridge->base + SCYC_CMP); | |
1009 | iowrite32(swap, bridge->base + SCYC_SWP); | |
1010 | iowrite32(pci_addr, bridge->base + SCYC_ADDR); | |
1011 | ||
1012 | /* Enable RMW */ | |
1013 | iowrite32(CA91CX42_SCYC_CTL_CYC_RMW, bridge->base + SCYC_CTL); | |
1014 | ||
1015 | /* Kick process off with a read to the required address. */ | |
1016 | result = ioread32(image->kern_base + offset); | |
1017 | ||
1018 | /* Disable RMW */ | |
1019 | iowrite32(0, bridge->base + SCYC_CTL); | |
1020 | ||
7c0ace54 | 1021 | out: |
886953e9 | 1022 | spin_unlock(&image->lock); |
04e10e15 | 1023 | |
886953e9 | 1024 | mutex_unlock(&bridge->vme_rmw); |
04e10e15 MW |
1025 | |
1026 | return result; | |
1027 | } | |
1028 | ||
efbb979d EC |
1029 | static int ca91cx42_dma_list_add(struct vme_dma_list *list, |
1030 | struct vme_dma_attr *src, struct vme_dma_attr *dest, size_t count) | |
4860ab74 MW |
1031 | { |
1032 | struct ca91cx42_dma_entry *entry, *prev; | |
1033 | struct vme_dma_pci *pci_attr; | |
1034 | struct vme_dma_vme *vme_attr; | |
1035 | dma_addr_t desc_ptr; | |
1036 | int retval = 0; | |
48d9356e MW |
1037 | struct device *dev; |
1038 | ||
1039 | dev = list->parent->parent->parent; | |
4860ab74 MW |
1040 | |
1041 | /* XXX descriptor must be aligned on 64-bit boundaries */ | |
32414878 | 1042 | entry = kmalloc(sizeof(struct ca91cx42_dma_entry), GFP_KERNEL); |
4860ab74 | 1043 | if (entry == NULL) { |
48d9356e | 1044 | dev_err(dev, "Failed to allocate memory for dma resource " |
4860ab74 MW |
1045 | "structure\n"); |
1046 | retval = -ENOMEM; | |
1047 | goto err_mem; | |
1048 | } | |
1049 | ||
1050 | /* Test descriptor alignment */ | |
886953e9 | 1051 | if ((unsigned long)&entry->descriptor & CA91CX42_DCPP_M) { |
48d9356e | 1052 | dev_err(dev, "Descriptor not aligned to 16 byte boundary as " |
886953e9 | 1053 | "required: %p\n", &entry->descriptor); |
4860ab74 MW |
1054 | retval = -EINVAL; |
1055 | goto err_align; | |
1056 | } | |
1057 | ||
886953e9 | 1058 | memset(&entry->descriptor, 0, sizeof(struct ca91cx42_dma_descriptor)); |
4860ab74 MW |
1059 | |
1060 | if (dest->type == VME_DMA_VME) { | |
1061 | entry->descriptor.dctl |= CA91CX42_DCTL_L2V; | |
feffce47 KV |
1062 | vme_attr = dest->private; |
1063 | pci_attr = src->private; | |
4860ab74 | 1064 | } else { |
feffce47 KV |
1065 | vme_attr = src->private; |
1066 | pci_attr = dest->private; | |
4860ab74 MW |
1067 | } |
1068 | ||
25985edc | 1069 | /* Check we can do fulfill required attributes */ |
4860ab74 MW |
1070 | if ((vme_attr->aspace & ~(VME_A16 | VME_A24 | VME_A32 | VME_USER1 | |
1071 | VME_USER2)) != 0) { | |
1072 | ||
48d9356e | 1073 | dev_err(dev, "Unsupported cycle type\n"); |
4860ab74 MW |
1074 | retval = -EINVAL; |
1075 | goto err_aspace; | |
1076 | } | |
1077 | ||
1078 | if ((vme_attr->cycle & ~(VME_SCT | VME_BLT | VME_SUPER | VME_USER | | |
1079 | VME_PROG | VME_DATA)) != 0) { | |
1080 | ||
48d9356e | 1081 | dev_err(dev, "Unsupported cycle type\n"); |
4860ab74 MW |
1082 | retval = -EINVAL; |
1083 | goto err_cycle; | |
1084 | } | |
1085 | ||
25985edc | 1086 | /* Check to see if we can fulfill source and destination */ |
4860ab74 MW |
1087 | if (!(((src->type == VME_DMA_PCI) && (dest->type == VME_DMA_VME)) || |
1088 | ((src->type == VME_DMA_VME) && (dest->type == VME_DMA_PCI)))) { | |
1089 | ||
48d9356e | 1090 | dev_err(dev, "Cannot perform transfer with this " |
4860ab74 MW |
1091 | "source-destination combination\n"); |
1092 | retval = -EINVAL; | |
1093 | goto err_direct; | |
1094 | } | |
1095 | ||
1096 | /* Setup cycle types */ | |
1097 | if (vme_attr->cycle & VME_BLT) | |
1098 | entry->descriptor.dctl |= CA91CX42_DCTL_VCT_BLT; | |
1099 | ||
1100 | /* Setup data width */ | |
1101 | switch (vme_attr->dwidth) { | |
1102 | case VME_D8: | |
1103 | entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D8; | |
1104 | break; | |
1105 | case VME_D16: | |
1106 | entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D16; | |
1107 | break; | |
1108 | case VME_D32: | |
1109 | entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D32; | |
1110 | break; | |
1111 | case VME_D64: | |
1112 | entry->descriptor.dctl |= CA91CX42_DCTL_VDW_D64; | |
1113 | break; | |
1114 | default: | |
48d9356e | 1115 | dev_err(dev, "Invalid data width\n"); |
4860ab74 MW |
1116 | return -EINVAL; |
1117 | } | |
1118 | ||
1119 | /* Setup address space */ | |
1120 | switch (vme_attr->aspace) { | |
1121 | case VME_A16: | |
1122 | entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A16; | |
1123 | break; | |
1124 | case VME_A24: | |
1125 | entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A24; | |
1126 | break; | |
1127 | case VME_A32: | |
1128 | entry->descriptor.dctl |= CA91CX42_DCTL_VAS_A32; | |
1129 | break; | |
1130 | case VME_USER1: | |
1131 | entry->descriptor.dctl |= CA91CX42_DCTL_VAS_USER1; | |
1132 | break; | |
1133 | case VME_USER2: | |
1134 | entry->descriptor.dctl |= CA91CX42_DCTL_VAS_USER2; | |
1135 | break; | |
1136 | default: | |
48d9356e | 1137 | dev_err(dev, "Invalid address space\n"); |
4860ab74 MW |
1138 | return -EINVAL; |
1139 | break; | |
1140 | } | |
1141 | ||
1142 | if (vme_attr->cycle & VME_SUPER) | |
1143 | entry->descriptor.dctl |= CA91CX42_DCTL_SUPER_SUPR; | |
1144 | if (vme_attr->cycle & VME_PROG) | |
1145 | entry->descriptor.dctl |= CA91CX42_DCTL_PGM_PGM; | |
1146 | ||
1147 | entry->descriptor.dtbc = count; | |
1148 | entry->descriptor.dla = pci_attr->address; | |
1149 | entry->descriptor.dva = vme_attr->address; | |
1150 | entry->descriptor.dcpp = CA91CX42_DCPP_NULL; | |
1151 | ||
1152 | /* Add to list */ | |
886953e9 | 1153 | list_add_tail(&entry->list, &list->entries); |
4860ab74 MW |
1154 | |
1155 | /* Fill out previous descriptors "Next Address" */ | |
886953e9 | 1156 | if (entry->list.prev != &list->entries) { |
4860ab74 MW |
1157 | prev = list_entry(entry->list.prev, struct ca91cx42_dma_entry, |
1158 | list); | |
1159 | /* We need the bus address for the pointer */ | |
886953e9 | 1160 | desc_ptr = virt_to_bus(&entry->descriptor); |
4860ab74 MW |
1161 | prev->descriptor.dcpp = desc_ptr & ~CA91CX42_DCPP_M; |
1162 | } | |
1163 | ||
1164 | return 0; | |
1165 | ||
1166 | err_cycle: | |
1167 | err_aspace: | |
1168 | err_direct: | |
1169 | err_align: | |
1170 | kfree(entry); | |
1171 | err_mem: | |
1172 | return retval; | |
1173 | } | |
1174 | ||
1175 | static int ca91cx42_dma_busy(struct vme_bridge *ca91cx42_bridge) | |
1176 | { | |
1177 | u32 tmp; | |
1178 | struct ca91cx42_driver *bridge; | |
1179 | ||
1180 | bridge = ca91cx42_bridge->driver_priv; | |
1181 | ||
1182 | tmp = ioread32(bridge->base + DGCS); | |
1183 | ||
1184 | if (tmp & CA91CX42_DGCS_ACT) | |
1185 | return 0; | |
1186 | else | |
1187 | return 1; | |
1188 | } | |
1189 | ||
efbb979d | 1190 | static int ca91cx42_dma_list_exec(struct vme_dma_list *list) |
4860ab74 MW |
1191 | { |
1192 | struct vme_dma_resource *ctrlr; | |
1193 | struct ca91cx42_dma_entry *entry; | |
75c66b6d | 1194 | int retval; |
4860ab74 MW |
1195 | dma_addr_t bus_addr; |
1196 | u32 val; | |
48d9356e | 1197 | struct device *dev; |
4860ab74 MW |
1198 | struct ca91cx42_driver *bridge; |
1199 | ||
1200 | ctrlr = list->parent; | |
1201 | ||
1202 | bridge = ctrlr->parent->driver_priv; | |
48d9356e | 1203 | dev = ctrlr->parent->parent; |
4860ab74 | 1204 | |
886953e9 | 1205 | mutex_lock(&ctrlr->mtx); |
4860ab74 | 1206 | |
886953e9 | 1207 | if (!(list_empty(&ctrlr->running))) { |
4860ab74 MW |
1208 | /* |
1209 | * XXX We have an active DMA transfer and currently haven't | |
1210 | * sorted out the mechanism for "pending" DMA transfers. | |
1211 | * Return busy. | |
1212 | */ | |
1213 | /* Need to add to pending here */ | |
886953e9 | 1214 | mutex_unlock(&ctrlr->mtx); |
4860ab74 MW |
1215 | return -EBUSY; |
1216 | } else { | |
886953e9 | 1217 | list_add(&list->list, &ctrlr->running); |
4860ab74 MW |
1218 | } |
1219 | ||
1220 | /* Get first bus address and write into registers */ | |
886953e9 | 1221 | entry = list_first_entry(&list->entries, struct ca91cx42_dma_entry, |
4860ab74 MW |
1222 | list); |
1223 | ||
886953e9 | 1224 | bus_addr = virt_to_bus(&entry->descriptor); |
4860ab74 | 1225 | |
886953e9 | 1226 | mutex_unlock(&ctrlr->mtx); |
4860ab74 MW |
1227 | |
1228 | iowrite32(0, bridge->base + DTBC); | |
1229 | iowrite32(bus_addr & ~CA91CX42_DCPP_M, bridge->base + DCPP); | |
1230 | ||
1231 | /* Start the operation */ | |
1232 | val = ioread32(bridge->base + DGCS); | |
1233 | ||
1234 | /* XXX Could set VMEbus On and Off Counters here */ | |
1235 | val &= (CA91CX42_DGCS_VON_M | CA91CX42_DGCS_VOFF_M); | |
1236 | ||
1237 | val |= (CA91CX42_DGCS_CHAIN | CA91CX42_DGCS_STOP | CA91CX42_DGCS_HALT | | |
1238 | CA91CX42_DGCS_DONE | CA91CX42_DGCS_LERR | CA91CX42_DGCS_VERR | | |
1239 | CA91CX42_DGCS_PERR); | |
1240 | ||
1241 | iowrite32(val, bridge->base + DGCS); | |
1242 | ||
1243 | val |= CA91CX42_DGCS_GO; | |
1244 | ||
1245 | iowrite32(val, bridge->base + DGCS); | |
1246 | ||
75c66b6d DK |
1247 | retval = wait_event_interruptible(bridge->dma_queue, |
1248 | ca91cx42_dma_busy(ctrlr->parent)); | |
1249 | ||
1250 | if (retval) { | |
1251 | val = ioread32(bridge->base + DGCS); | |
1252 | iowrite32(val | CA91CX42_DGCS_STOP_REQ, bridge->base + DGCS); | |
1253 | /* Wait for the operation to abort */ | |
1254 | wait_event(bridge->dma_queue, | |
1255 | ca91cx42_dma_busy(ctrlr->parent)); | |
1256 | retval = -EINTR; | |
1257 | goto exit; | |
1258 | } | |
4860ab74 MW |
1259 | |
1260 | /* | |
1261 | * Read status register, this register is valid until we kick off a | |
1262 | * new transfer. | |
1263 | */ | |
1264 | val = ioread32(bridge->base + DGCS); | |
1265 | ||
1266 | if (val & (CA91CX42_DGCS_LERR | CA91CX42_DGCS_VERR | | |
1267 | CA91CX42_DGCS_PERR)) { | |
1268 | ||
48d9356e | 1269 | dev_err(dev, "ca91c042: DMA Error. DGCS=%08X\n", val); |
4860ab74 | 1270 | val = ioread32(bridge->base + DCTL); |
1cfb645c | 1271 | retval = -EIO; |
4860ab74 MW |
1272 | } |
1273 | ||
75c66b6d | 1274 | exit: |
4860ab74 | 1275 | /* Remove list from running list */ |
886953e9 EC |
1276 | mutex_lock(&ctrlr->mtx); |
1277 | list_del(&list->list); | |
1278 | mutex_unlock(&ctrlr->mtx); | |
4860ab74 MW |
1279 | |
1280 | return retval; | |
1281 | ||
1282 | } | |
1283 | ||
efbb979d | 1284 | static int ca91cx42_dma_list_empty(struct vme_dma_list *list) |
4860ab74 MW |
1285 | { |
1286 | struct list_head *pos, *temp; | |
1287 | struct ca91cx42_dma_entry *entry; | |
1288 | ||
1289 | /* detach and free each entry */ | |
886953e9 | 1290 | list_for_each_safe(pos, temp, &list->entries) { |
4860ab74 MW |
1291 | list_del(pos); |
1292 | entry = list_entry(pos, struct ca91cx42_dma_entry, list); | |
1293 | kfree(entry); | |
1294 | } | |
1295 | ||
1296 | return 0; | |
1297 | } | |
1298 | ||
2b82beb8 MW |
1299 | /* |
1300 | * All 4 location monitors reside at the same base - this is therefore a | |
1301 | * system wide configuration. | |
1302 | * | |
1303 | * This does not enable the LM monitor - that should be done when the first | |
1304 | * callback is attached and disabled when the last callback is removed. | |
1305 | */ | |
efbb979d | 1306 | static int ca91cx42_lm_set(struct vme_lm_resource *lm, |
6af04b06 | 1307 | unsigned long long lm_base, u32 aspace, u32 cycle) |
2b82beb8 MW |
1308 | { |
1309 | u32 temp_base, lm_ctl = 0; | |
1310 | int i; | |
1311 | struct ca91cx42_driver *bridge; | |
1312 | struct device *dev; | |
1313 | ||
1314 | bridge = lm->parent->driver_priv; | |
1315 | dev = lm->parent->parent; | |
1316 | ||
1317 | /* Check the alignment of the location monitor */ | |
1318 | temp_base = (u32)lm_base; | |
1319 | if (temp_base & 0xffff) { | |
1320 | dev_err(dev, "Location monitor must be aligned to 64KB " | |
1321 | "boundary"); | |
1322 | return -EINVAL; | |
1323 | } | |
1324 | ||
886953e9 | 1325 | mutex_lock(&lm->mtx); |
2b82beb8 MW |
1326 | |
1327 | /* If we already have a callback attached, we can't move it! */ | |
1328 | for (i = 0; i < lm->monitors; i++) { | |
1329 | if (bridge->lm_callback[i] != NULL) { | |
886953e9 | 1330 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1331 | dev_err(dev, "Location monitor callback attached, " |
1332 | "can't reset\n"); | |
1333 | return -EBUSY; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | switch (aspace) { | |
1338 | case VME_A16: | |
1339 | lm_ctl |= CA91CX42_LM_CTL_AS_A16; | |
1340 | break; | |
1341 | case VME_A24: | |
1342 | lm_ctl |= CA91CX42_LM_CTL_AS_A24; | |
1343 | break; | |
1344 | case VME_A32: | |
1345 | lm_ctl |= CA91CX42_LM_CTL_AS_A32; | |
1346 | break; | |
1347 | default: | |
886953e9 | 1348 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1349 | dev_err(dev, "Invalid address space\n"); |
1350 | return -EINVAL; | |
1351 | break; | |
1352 | } | |
1353 | ||
1354 | if (cycle & VME_SUPER) | |
1355 | lm_ctl |= CA91CX42_LM_CTL_SUPR; | |
1356 | if (cycle & VME_USER) | |
1357 | lm_ctl |= CA91CX42_LM_CTL_NPRIV; | |
1358 | if (cycle & VME_PROG) | |
1359 | lm_ctl |= CA91CX42_LM_CTL_PGM; | |
1360 | if (cycle & VME_DATA) | |
1361 | lm_ctl |= CA91CX42_LM_CTL_DATA; | |
1362 | ||
1363 | iowrite32(lm_base, bridge->base + LM_BS); | |
1364 | iowrite32(lm_ctl, bridge->base + LM_CTL); | |
1365 | ||
886953e9 | 1366 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1367 | |
1368 | return 0; | |
1369 | } | |
1370 | ||
1371 | /* Get configuration of the callback monitor and return whether it is enabled | |
1372 | * or disabled. | |
1373 | */ | |
efbb979d | 1374 | static int ca91cx42_lm_get(struct vme_lm_resource *lm, |
6af04b06 | 1375 | unsigned long long *lm_base, u32 *aspace, u32 *cycle) |
2b82beb8 MW |
1376 | { |
1377 | u32 lm_ctl, enabled = 0; | |
1378 | struct ca91cx42_driver *bridge; | |
1379 | ||
1380 | bridge = lm->parent->driver_priv; | |
1381 | ||
886953e9 | 1382 | mutex_lock(&lm->mtx); |
2b82beb8 MW |
1383 | |
1384 | *lm_base = (unsigned long long)ioread32(bridge->base + LM_BS); | |
1385 | lm_ctl = ioread32(bridge->base + LM_CTL); | |
1386 | ||
1387 | if (lm_ctl & CA91CX42_LM_CTL_EN) | |
1388 | enabled = 1; | |
1389 | ||
1390 | if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A16) | |
1391 | *aspace = VME_A16; | |
1392 | if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A24) | |
1393 | *aspace = VME_A24; | |
1394 | if ((lm_ctl & CA91CX42_LM_CTL_AS_M) == CA91CX42_LM_CTL_AS_A32) | |
1395 | *aspace = VME_A32; | |
1396 | ||
1397 | *cycle = 0; | |
1398 | if (lm_ctl & CA91CX42_LM_CTL_SUPR) | |
1399 | *cycle |= VME_SUPER; | |
1400 | if (lm_ctl & CA91CX42_LM_CTL_NPRIV) | |
1401 | *cycle |= VME_USER; | |
1402 | if (lm_ctl & CA91CX42_LM_CTL_PGM) | |
1403 | *cycle |= VME_PROG; | |
1404 | if (lm_ctl & CA91CX42_LM_CTL_DATA) | |
1405 | *cycle |= VME_DATA; | |
1406 | ||
886953e9 | 1407 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1408 | |
1409 | return enabled; | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * Attach a callback to a specific location monitor. | |
1414 | * | |
1415 | * Callback will be passed the monitor triggered. | |
1416 | */ | |
efbb979d | 1417 | static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor, |
2b82beb8 MW |
1418 | void (*callback)(int)) |
1419 | { | |
1420 | u32 lm_ctl, tmp; | |
1421 | struct ca91cx42_driver *bridge; | |
1422 | struct device *dev; | |
1423 | ||
1424 | bridge = lm->parent->driver_priv; | |
1425 | dev = lm->parent->parent; | |
1426 | ||
886953e9 | 1427 | mutex_lock(&lm->mtx); |
2b82beb8 MW |
1428 | |
1429 | /* Ensure that the location monitor is configured - need PGM or DATA */ | |
1430 | lm_ctl = ioread32(bridge->base + LM_CTL); | |
1431 | if ((lm_ctl & (CA91CX42_LM_CTL_PGM | CA91CX42_LM_CTL_DATA)) == 0) { | |
886953e9 | 1432 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1433 | dev_err(dev, "Location monitor not properly configured\n"); |
1434 | return -EINVAL; | |
1435 | } | |
1436 | ||
1437 | /* Check that a callback isn't already attached */ | |
1438 | if (bridge->lm_callback[monitor] != NULL) { | |
886953e9 | 1439 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1440 | dev_err(dev, "Existing callback attached\n"); |
1441 | return -EBUSY; | |
1442 | } | |
1443 | ||
1444 | /* Attach callback */ | |
1445 | bridge->lm_callback[monitor] = callback; | |
1446 | ||
1447 | /* Enable Location Monitor interrupt */ | |
1448 | tmp = ioread32(bridge->base + LINT_EN); | |
1449 | tmp |= CA91CX42_LINT_LM[monitor]; | |
1450 | iowrite32(tmp, bridge->base + LINT_EN); | |
1451 | ||
1452 | /* Ensure that global Location Monitor Enable set */ | |
1453 | if ((lm_ctl & CA91CX42_LM_CTL_EN) == 0) { | |
1454 | lm_ctl |= CA91CX42_LM_CTL_EN; | |
1455 | iowrite32(lm_ctl, bridge->base + LM_CTL); | |
1456 | } | |
1457 | ||
886953e9 | 1458 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1459 | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | /* | |
1464 | * Detach a callback function forn a specific location monitor. | |
1465 | */ | |
efbb979d | 1466 | static int ca91cx42_lm_detach(struct vme_lm_resource *lm, int monitor) |
2b82beb8 MW |
1467 | { |
1468 | u32 tmp; | |
1469 | struct ca91cx42_driver *bridge; | |
1470 | ||
1471 | bridge = lm->parent->driver_priv; | |
1472 | ||
886953e9 | 1473 | mutex_lock(&lm->mtx); |
2b82beb8 MW |
1474 | |
1475 | /* Disable Location Monitor and ensure previous interrupts are clear */ | |
1476 | tmp = ioread32(bridge->base + LINT_EN); | |
1477 | tmp &= ~CA91CX42_LINT_LM[monitor]; | |
1478 | iowrite32(tmp, bridge->base + LINT_EN); | |
1479 | ||
1480 | iowrite32(CA91CX42_LINT_LM[monitor], | |
1481 | bridge->base + LINT_STAT); | |
1482 | ||
1483 | /* Detach callback */ | |
1484 | bridge->lm_callback[monitor] = NULL; | |
1485 | ||
1486 | /* If all location monitors disabled, disable global Location Monitor */ | |
1487 | if ((tmp & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 | | |
1488 | CA91CX42_LINT_LM3)) == 0) { | |
1489 | tmp = ioread32(bridge->base + LM_CTL); | |
1490 | tmp &= ~CA91CX42_LM_CTL_EN; | |
1491 | iowrite32(tmp, bridge->base + LM_CTL); | |
1492 | } | |
1493 | ||
886953e9 | 1494 | mutex_unlock(&lm->mtx); |
2b82beb8 MW |
1495 | |
1496 | return 0; | |
1497 | } | |
1498 | ||
efbb979d | 1499 | static int ca91cx42_slot_get(struct vme_bridge *ca91cx42_bridge) |
60479690 | 1500 | { |
3d0f8bc7 | 1501 | u32 slot = 0; |
29848ac9 MW |
1502 | struct ca91cx42_driver *bridge; |
1503 | ||
1504 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 1505 | |
12b2d5c0 | 1506 | if (!geoid) { |
29848ac9 | 1507 | slot = ioread32(bridge->base + VCSR_BS); |
12b2d5c0 MW |
1508 | slot = ((slot & CA91CX42_VCSR_BS_SLOT_M) >> 27); |
1509 | } else | |
1510 | slot = geoid; | |
1511 | ||
3d0f8bc7 MW |
1512 | return (int)slot; |
1513 | ||
1514 | } | |
1515 | ||
a11cfdf4 | 1516 | static void *ca91cx42_alloc_consistent(struct device *parent, size_t size, |
7f58f025 MV |
1517 | dma_addr_t *dma) |
1518 | { | |
1519 | struct pci_dev *pdev; | |
1520 | ||
1521 | /* Find pci_dev container of dev */ | |
1522 | pdev = container_of(parent, struct pci_dev, dev); | |
1523 | ||
1524 | return pci_alloc_consistent(pdev, size, dma); | |
1525 | } | |
1526 | ||
a11cfdf4 HS |
1527 | static void ca91cx42_free_consistent(struct device *parent, size_t size, |
1528 | void *vaddr, dma_addr_t dma) | |
7f58f025 MV |
1529 | { |
1530 | struct pci_dev *pdev; | |
1531 | ||
1532 | /* Find pci_dev container of dev */ | |
1533 | pdev = container_of(parent, struct pci_dev, dev); | |
1534 | ||
1535 | pci_free_consistent(pdev, size, vaddr, dma); | |
1536 | } | |
1537 | ||
3d0f8bc7 MW |
1538 | /* |
1539 | * Configure CR/CSR space | |
1540 | * | |
1541 | * Access to the CR/CSR can be configured at power-up. The location of the | |
1542 | * CR/CSR registers in the CR/CSR address space is determined by the boards | |
1543 | * Auto-ID or Geographic address. This function ensures that the window is | |
1544 | * enabled at an offset consistent with the boards geopgraphic address. | |
1545 | */ | |
29848ac9 MW |
1546 | static int ca91cx42_crcsr_init(struct vme_bridge *ca91cx42_bridge, |
1547 | struct pci_dev *pdev) | |
3d0f8bc7 MW |
1548 | { |
1549 | unsigned int crcsr_addr; | |
1550 | int tmp, slot; | |
29848ac9 MW |
1551 | struct ca91cx42_driver *bridge; |
1552 | ||
1553 | bridge = ca91cx42_bridge->driver_priv; | |
3d0f8bc7 | 1554 | |
29848ac9 | 1555 | slot = ca91cx42_slot_get(ca91cx42_bridge); |
25331ba2 MW |
1556 | |
1557 | /* Write CSR Base Address if slot ID is supplied as a module param */ | |
1558 | if (geoid) | |
1559 | iowrite32(geoid << 27, bridge->base + VCSR_BS); | |
1560 | ||
3d0f8bc7 MW |
1561 | dev_info(&pdev->dev, "CR/CSR Offset: %d\n", slot); |
1562 | if (slot == 0) { | |
1563 | dev_err(&pdev->dev, "Slot number is unset, not configuring " | |
1564 | "CR/CSR space\n"); | |
1565 | return -EINVAL; | |
60479690 | 1566 | } |
3d0f8bc7 MW |
1567 | |
1568 | /* Allocate mem for CR/CSR image */ | |
88b2608c JP |
1569 | bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE, |
1570 | &bridge->crcsr_bus); | |
29848ac9 | 1571 | if (bridge->crcsr_kernel == NULL) { |
3d0f8bc7 MW |
1572 | dev_err(&pdev->dev, "Failed to allocate memory for CR/CSR " |
1573 | "image\n"); | |
1574 | return -ENOMEM; | |
60479690 MW |
1575 | } |
1576 | ||
3d0f8bc7 | 1577 | crcsr_addr = slot * (512 * 1024); |
29848ac9 | 1578 | iowrite32(bridge->crcsr_bus - crcsr_addr, bridge->base + VCSR_TO); |
60479690 | 1579 | |
29848ac9 | 1580 | tmp = ioread32(bridge->base + VCSR_CTL); |
3d0f8bc7 | 1581 | tmp |= CA91CX42_VCSR_CTL_EN; |
29848ac9 | 1582 | iowrite32(tmp, bridge->base + VCSR_CTL); |
60479690 | 1583 | |
3d0f8bc7 | 1584 | return 0; |
60479690 MW |
1585 | } |
1586 | ||
29848ac9 MW |
1587 | static void ca91cx42_crcsr_exit(struct vme_bridge *ca91cx42_bridge, |
1588 | struct pci_dev *pdev) | |
60479690 | 1589 | { |
3d0f8bc7 | 1590 | u32 tmp; |
29848ac9 MW |
1591 | struct ca91cx42_driver *bridge; |
1592 | ||
1593 | bridge = ca91cx42_bridge->driver_priv; | |
60479690 | 1594 | |
3d0f8bc7 | 1595 | /* Turn off CR/CSR space */ |
29848ac9 | 1596 | tmp = ioread32(bridge->base + VCSR_CTL); |
3d0f8bc7 | 1597 | tmp &= ~CA91CX42_VCSR_CTL_EN; |
29848ac9 | 1598 | iowrite32(tmp, bridge->base + VCSR_CTL); |
60479690 | 1599 | |
3d0f8bc7 | 1600 | /* Free image */ |
29848ac9 | 1601 | iowrite32(0, bridge->base + VCSR_TO); |
60479690 | 1602 | |
29848ac9 MW |
1603 | pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel, |
1604 | bridge->crcsr_bus); | |
3d0f8bc7 | 1605 | } |
60479690 | 1606 | |
3d0f8bc7 MW |
1607 | static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
1608 | { | |
1609 | int retval, i; | |
1610 | u32 data; | |
43f5e46c | 1611 | struct list_head *pos = NULL, *n; |
29848ac9 MW |
1612 | struct vme_bridge *ca91cx42_bridge; |
1613 | struct ca91cx42_driver *ca91cx42_device; | |
3d0f8bc7 MW |
1614 | struct vme_master_resource *master_image; |
1615 | struct vme_slave_resource *slave_image; | |
3d0f8bc7 | 1616 | struct vme_dma_resource *dma_ctrlr; |
3d0f8bc7 MW |
1617 | struct vme_lm_resource *lm; |
1618 | ||
1619 | /* We want to support more than one of each bridge so we need to | |
1620 | * dynamically allocate the bridge structure | |
1621 | */ | |
7a6cb0d5 | 1622 | ca91cx42_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL); |
3d0f8bc7 MW |
1623 | |
1624 | if (ca91cx42_bridge == NULL) { | |
1625 | dev_err(&pdev->dev, "Failed to allocate memory for device " | |
1626 | "structure\n"); | |
1627 | retval = -ENOMEM; | |
1628 | goto err_struct; | |
1629 | } | |
1630 | ||
7a6cb0d5 | 1631 | ca91cx42_device = kzalloc(sizeof(struct ca91cx42_driver), GFP_KERNEL); |
29848ac9 MW |
1632 | |
1633 | if (ca91cx42_device == NULL) { | |
1634 | dev_err(&pdev->dev, "Failed to allocate memory for device " | |
1635 | "structure\n"); | |
1636 | retval = -ENOMEM; | |
1637 | goto err_driver; | |
1638 | } | |
1639 | ||
29848ac9 MW |
1640 | ca91cx42_bridge->driver_priv = ca91cx42_device; |
1641 | ||
3d0f8bc7 MW |
1642 | /* Enable the device */ |
1643 | retval = pci_enable_device(pdev); | |
1644 | if (retval) { | |
1645 | dev_err(&pdev->dev, "Unable to enable device\n"); | |
1646 | goto err_enable; | |
1647 | } | |
1648 | ||
1649 | /* Map Registers */ | |
1650 | retval = pci_request_regions(pdev, driver_name); | |
1651 | if (retval) { | |
1652 | dev_err(&pdev->dev, "Unable to reserve resources\n"); | |
1653 | goto err_resource; | |
1654 | } | |
1655 | ||
1656 | /* map registers in BAR 0 */ | |
29848ac9 | 1657 | ca91cx42_device->base = ioremap_nocache(pci_resource_start(pdev, 0), |
3d0f8bc7 | 1658 | 4096); |
29848ac9 | 1659 | if (!ca91cx42_device->base) { |
3d0f8bc7 MW |
1660 | dev_err(&pdev->dev, "Unable to remap CRG region\n"); |
1661 | retval = -EIO; | |
1662 | goto err_remap; | |
1663 | } | |
1664 | ||
1665 | /* Check to see if the mapping worked out */ | |
29848ac9 | 1666 | data = ioread32(ca91cx42_device->base + CA91CX42_PCI_ID) & 0x0000FFFF; |
3d0f8bc7 MW |
1667 | if (data != PCI_VENDOR_ID_TUNDRA) { |
1668 | dev_err(&pdev->dev, "PCI_ID check failed\n"); | |
1669 | retval = -EIO; | |
1670 | goto err_test; | |
1671 | } | |
1672 | ||
1673 | /* Initialize wait queues & mutual exclusion flags */ | |
886953e9 EC |
1674 | init_waitqueue_head(&ca91cx42_device->dma_queue); |
1675 | init_waitqueue_head(&ca91cx42_device->iack_queue); | |
1676 | mutex_init(&ca91cx42_device->vme_int); | |
1677 | mutex_init(&ca91cx42_device->vme_rmw); | |
3d0f8bc7 | 1678 | |
886953e9 | 1679 | ca91cx42_bridge->parent = &pdev->dev; |
3d0f8bc7 MW |
1680 | strcpy(ca91cx42_bridge->name, driver_name); |
1681 | ||
1682 | /* Setup IRQ */ | |
1683 | retval = ca91cx42_irq_init(ca91cx42_bridge); | |
1684 | if (retval != 0) { | |
1685 | dev_err(&pdev->dev, "Chip Initialization failed.\n"); | |
1686 | goto err_irq; | |
1687 | } | |
1688 | ||
1689 | /* Add master windows to list */ | |
886953e9 | 1690 | INIT_LIST_HEAD(&ca91cx42_bridge->master_resources); |
3d0f8bc7 MW |
1691 | for (i = 0; i < CA91C142_MAX_MASTER; i++) { |
1692 | master_image = kmalloc(sizeof(struct vme_master_resource), | |
1693 | GFP_KERNEL); | |
1694 | if (master_image == NULL) { | |
1695 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
1696 | "master resource structure\n"); | |
1697 | retval = -ENOMEM; | |
1698 | goto err_master; | |
1699 | } | |
1700 | master_image->parent = ca91cx42_bridge; | |
886953e9 | 1701 | spin_lock_init(&master_image->lock); |
3d0f8bc7 MW |
1702 | master_image->locked = 0; |
1703 | master_image->number = i; | |
1704 | master_image->address_attr = VME_A16 | VME_A24 | VME_A32 | | |
1705 | VME_CRCSR | VME_USER1 | VME_USER2; | |
1706 | master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | | |
1707 | VME_SUPER | VME_USER | VME_PROG | VME_DATA; | |
1708 | master_image->width_attr = VME_D8 | VME_D16 | VME_D32 | VME_D64; | |
886953e9 | 1709 | memset(&master_image->bus_resource, 0, |
3d0f8bc7 MW |
1710 | sizeof(struct resource)); |
1711 | master_image->kern_base = NULL; | |
886953e9 EC |
1712 | list_add_tail(&master_image->list, |
1713 | &ca91cx42_bridge->master_resources); | |
3d0f8bc7 MW |
1714 | } |
1715 | ||
1716 | /* Add slave windows to list */ | |
886953e9 | 1717 | INIT_LIST_HEAD(&ca91cx42_bridge->slave_resources); |
3d0f8bc7 MW |
1718 | for (i = 0; i < CA91C142_MAX_SLAVE; i++) { |
1719 | slave_image = kmalloc(sizeof(struct vme_slave_resource), | |
1720 | GFP_KERNEL); | |
1721 | if (slave_image == NULL) { | |
1722 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
1723 | "slave resource structure\n"); | |
1724 | retval = -ENOMEM; | |
1725 | goto err_slave; | |
1726 | } | |
1727 | slave_image->parent = ca91cx42_bridge; | |
886953e9 | 1728 | mutex_init(&slave_image->mtx); |
3d0f8bc7 MW |
1729 | slave_image->locked = 0; |
1730 | slave_image->number = i; | |
1731 | slave_image->address_attr = VME_A24 | VME_A32 | VME_USER1 | | |
1732 | VME_USER2; | |
1733 | ||
1734 | /* Only windows 0 and 4 support A16 */ | |
1735 | if (i == 0 || i == 4) | |
1736 | slave_image->address_attr |= VME_A16; | |
1737 | ||
1738 | slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT | | |
1739 | VME_SUPER | VME_USER | VME_PROG | VME_DATA; | |
886953e9 EC |
1740 | list_add_tail(&slave_image->list, |
1741 | &ca91cx42_bridge->slave_resources); | |
3d0f8bc7 | 1742 | } |
4860ab74 | 1743 | |
3d0f8bc7 | 1744 | /* Add dma engines to list */ |
886953e9 | 1745 | INIT_LIST_HEAD(&ca91cx42_bridge->dma_resources); |
3d0f8bc7 MW |
1746 | for (i = 0; i < CA91C142_MAX_DMA; i++) { |
1747 | dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource), | |
1748 | GFP_KERNEL); | |
1749 | if (dma_ctrlr == NULL) { | |
1750 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
1751 | "dma resource structure\n"); | |
1752 | retval = -ENOMEM; | |
1753 | goto err_dma; | |
1754 | } | |
1755 | dma_ctrlr->parent = ca91cx42_bridge; | |
886953e9 | 1756 | mutex_init(&dma_ctrlr->mtx); |
3d0f8bc7 MW |
1757 | dma_ctrlr->locked = 0; |
1758 | dma_ctrlr->number = i; | |
4f723df4 MW |
1759 | dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM | |
1760 | VME_DMA_MEM_TO_VME; | |
886953e9 EC |
1761 | INIT_LIST_HEAD(&dma_ctrlr->pending); |
1762 | INIT_LIST_HEAD(&dma_ctrlr->running); | |
1763 | list_add_tail(&dma_ctrlr->list, | |
1764 | &ca91cx42_bridge->dma_resources); | |
3d0f8bc7 | 1765 | } |
4860ab74 | 1766 | |
3d0f8bc7 | 1767 | /* Add location monitor to list */ |
886953e9 | 1768 | INIT_LIST_HEAD(&ca91cx42_bridge->lm_resources); |
3d0f8bc7 MW |
1769 | lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL); |
1770 | if (lm == NULL) { | |
1771 | dev_err(&pdev->dev, "Failed to allocate memory for " | |
1772 | "location monitor resource structure\n"); | |
1773 | retval = -ENOMEM; | |
1774 | goto err_lm; | |
1775 | } | |
1776 | lm->parent = ca91cx42_bridge; | |
886953e9 | 1777 | mutex_init(&lm->mtx); |
3d0f8bc7 MW |
1778 | lm->locked = 0; |
1779 | lm->number = 1; | |
1780 | lm->monitors = 4; | |
886953e9 | 1781 | list_add_tail(&lm->list, &ca91cx42_bridge->lm_resources); |
3d0f8bc7 MW |
1782 | |
1783 | ca91cx42_bridge->slave_get = ca91cx42_slave_get; | |
1784 | ca91cx42_bridge->slave_set = ca91cx42_slave_set; | |
1785 | ca91cx42_bridge->master_get = ca91cx42_master_get; | |
1786 | ca91cx42_bridge->master_set = ca91cx42_master_set; | |
1787 | ca91cx42_bridge->master_read = ca91cx42_master_read; | |
1788 | ca91cx42_bridge->master_write = ca91cx42_master_write; | |
3d0f8bc7 MW |
1789 | ca91cx42_bridge->master_rmw = ca91cx42_master_rmw; |
1790 | ca91cx42_bridge->dma_list_add = ca91cx42_dma_list_add; | |
1791 | ca91cx42_bridge->dma_list_exec = ca91cx42_dma_list_exec; | |
1792 | ca91cx42_bridge->dma_list_empty = ca91cx42_dma_list_empty; | |
c813f592 MW |
1793 | ca91cx42_bridge->irq_set = ca91cx42_irq_set; |
1794 | ca91cx42_bridge->irq_generate = ca91cx42_irq_generate; | |
3d0f8bc7 MW |
1795 | ca91cx42_bridge->lm_set = ca91cx42_lm_set; |
1796 | ca91cx42_bridge->lm_get = ca91cx42_lm_get; | |
1797 | ca91cx42_bridge->lm_attach = ca91cx42_lm_attach; | |
1798 | ca91cx42_bridge->lm_detach = ca91cx42_lm_detach; | |
3d0f8bc7 | 1799 | ca91cx42_bridge->slot_get = ca91cx42_slot_get; |
7f58f025 MV |
1800 | ca91cx42_bridge->alloc_consistent = ca91cx42_alloc_consistent; |
1801 | ca91cx42_bridge->free_consistent = ca91cx42_free_consistent; | |
3d0f8bc7 | 1802 | |
29848ac9 | 1803 | data = ioread32(ca91cx42_device->base + MISC_CTL); |
3d0f8bc7 MW |
1804 | dev_info(&pdev->dev, "Board is%s the VME system controller\n", |
1805 | (data & CA91CX42_MISC_CTL_SYSCON) ? "" : " not"); | |
29848ac9 MW |
1806 | dev_info(&pdev->dev, "Slot ID is %d\n", |
1807 | ca91cx42_slot_get(ca91cx42_bridge)); | |
3d0f8bc7 | 1808 | |
7946328f | 1809 | if (ca91cx42_crcsr_init(ca91cx42_bridge, pdev)) |
3d0f8bc7 | 1810 | dev_err(&pdev->dev, "CR/CSR configuration failed.\n"); |
60479690 | 1811 | |
3d0f8bc7 MW |
1812 | /* Need to save ca91cx42_bridge pointer locally in link list for use in |
1813 | * ca91cx42_remove() | |
1814 | */ | |
1815 | retval = vme_register_bridge(ca91cx42_bridge); | |
1816 | if (retval != 0) { | |
1817 | dev_err(&pdev->dev, "Chip Registration failed.\n"); | |
1818 | goto err_reg; | |
1819 | } | |
1820 | ||
29848ac9 MW |
1821 | pci_set_drvdata(pdev, ca91cx42_bridge); |
1822 | ||
3d0f8bc7 MW |
1823 | return 0; |
1824 | ||
3d0f8bc7 | 1825 | err_reg: |
29848ac9 | 1826 | ca91cx42_crcsr_exit(ca91cx42_bridge, pdev); |
3d0f8bc7 MW |
1827 | err_lm: |
1828 | /* resources are stored in link list */ | |
43f5e46c | 1829 | list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) { |
3d0f8bc7 MW |
1830 | lm = list_entry(pos, struct vme_lm_resource, list); |
1831 | list_del(pos); | |
1832 | kfree(lm); | |
1833 | } | |
3d0f8bc7 MW |
1834 | err_dma: |
1835 | /* resources are stored in link list */ | |
43f5e46c | 1836 | list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) { |
3d0f8bc7 MW |
1837 | dma_ctrlr = list_entry(pos, struct vme_dma_resource, list); |
1838 | list_del(pos); | |
1839 | kfree(dma_ctrlr); | |
60479690 | 1840 | } |
3d0f8bc7 MW |
1841 | err_slave: |
1842 | /* resources are stored in link list */ | |
43f5e46c | 1843 | list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) { |
3d0f8bc7 MW |
1844 | slave_image = list_entry(pos, struct vme_slave_resource, list); |
1845 | list_del(pos); | |
1846 | kfree(slave_image); | |
1847 | } | |
1848 | err_master: | |
1849 | /* resources are stored in link list */ | |
43f5e46c | 1850 | list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) { |
3d0f8bc7 MW |
1851 | master_image = list_entry(pos, struct vme_master_resource, |
1852 | list); | |
1853 | list_del(pos); | |
1854 | kfree(master_image); | |
1855 | } | |
1856 | ||
29848ac9 | 1857 | ca91cx42_irq_exit(ca91cx42_device, pdev); |
3d0f8bc7 MW |
1858 | err_irq: |
1859 | err_test: | |
29848ac9 | 1860 | iounmap(ca91cx42_device->base); |
3d0f8bc7 MW |
1861 | err_remap: |
1862 | pci_release_regions(pdev); | |
1863 | err_resource: | |
1864 | pci_disable_device(pdev); | |
1865 | err_enable: | |
29848ac9 MW |
1866 | kfree(ca91cx42_device); |
1867 | err_driver: | |
3d0f8bc7 MW |
1868 | kfree(ca91cx42_bridge); |
1869 | err_struct: | |
1870 | return retval; | |
60479690 | 1871 | |
60479690 MW |
1872 | } |
1873 | ||
efbb979d | 1874 | static void ca91cx42_remove(struct pci_dev *pdev) |
60479690 | 1875 | { |
43f5e46c | 1876 | struct list_head *pos = NULL, *n; |
3d0f8bc7 MW |
1877 | struct vme_master_resource *master_image; |
1878 | struct vme_slave_resource *slave_image; | |
1879 | struct vme_dma_resource *dma_ctrlr; | |
1880 | struct vme_lm_resource *lm; | |
29848ac9 MW |
1881 | struct ca91cx42_driver *bridge; |
1882 | struct vme_bridge *ca91cx42_bridge = pci_get_drvdata(pdev); | |
1883 | ||
1884 | bridge = ca91cx42_bridge->driver_priv; | |
1885 | ||
60479690 | 1886 | |
3d0f8bc7 | 1887 | /* Turn off Ints */ |
29848ac9 | 1888 | iowrite32(0, bridge->base + LINT_EN); |
3d0f8bc7 MW |
1889 | |
1890 | /* Turn off the windows */ | |
29848ac9 MW |
1891 | iowrite32(0x00800000, bridge->base + LSI0_CTL); |
1892 | iowrite32(0x00800000, bridge->base + LSI1_CTL); | |
1893 | iowrite32(0x00800000, bridge->base + LSI2_CTL); | |
1894 | iowrite32(0x00800000, bridge->base + LSI3_CTL); | |
1895 | iowrite32(0x00800000, bridge->base + LSI4_CTL); | |
1896 | iowrite32(0x00800000, bridge->base + LSI5_CTL); | |
1897 | iowrite32(0x00800000, bridge->base + LSI6_CTL); | |
1898 | iowrite32(0x00800000, bridge->base + LSI7_CTL); | |
1899 | iowrite32(0x00F00000, bridge->base + VSI0_CTL); | |
1900 | iowrite32(0x00F00000, bridge->base + VSI1_CTL); | |
1901 | iowrite32(0x00F00000, bridge->base + VSI2_CTL); | |
1902 | iowrite32(0x00F00000, bridge->base + VSI3_CTL); | |
1903 | iowrite32(0x00F00000, bridge->base + VSI4_CTL); | |
1904 | iowrite32(0x00F00000, bridge->base + VSI5_CTL); | |
1905 | iowrite32(0x00F00000, bridge->base + VSI6_CTL); | |
1906 | iowrite32(0x00F00000, bridge->base + VSI7_CTL); | |
3d0f8bc7 MW |
1907 | |
1908 | vme_unregister_bridge(ca91cx42_bridge); | |
bb9ea89e MW |
1909 | |
1910 | ca91cx42_crcsr_exit(ca91cx42_bridge, pdev); | |
1911 | ||
3d0f8bc7 | 1912 | /* resources are stored in link list */ |
43f5e46c | 1913 | list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) { |
3d0f8bc7 MW |
1914 | lm = list_entry(pos, struct vme_lm_resource, list); |
1915 | list_del(pos); | |
1916 | kfree(lm); | |
60479690 | 1917 | } |
3d0f8bc7 MW |
1918 | |
1919 | /* resources are stored in link list */ | |
43f5e46c | 1920 | list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) { |
3d0f8bc7 MW |
1921 | dma_ctrlr = list_entry(pos, struct vme_dma_resource, list); |
1922 | list_del(pos); | |
1923 | kfree(dma_ctrlr); | |
60479690 MW |
1924 | } |
1925 | ||
3d0f8bc7 | 1926 | /* resources are stored in link list */ |
43f5e46c | 1927 | list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) { |
3d0f8bc7 MW |
1928 | slave_image = list_entry(pos, struct vme_slave_resource, list); |
1929 | list_del(pos); | |
1930 | kfree(slave_image); | |
1931 | } | |
60479690 | 1932 | |
3d0f8bc7 | 1933 | /* resources are stored in link list */ |
43f5e46c | 1934 | list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) { |
3d0f8bc7 MW |
1935 | master_image = list_entry(pos, struct vme_master_resource, |
1936 | list); | |
1937 | list_del(pos); | |
1938 | kfree(master_image); | |
1939 | } | |
60479690 | 1940 | |
29848ac9 | 1941 | ca91cx42_irq_exit(bridge, pdev); |
60479690 | 1942 | |
29848ac9 | 1943 | iounmap(bridge->base); |
60479690 | 1944 | |
3d0f8bc7 | 1945 | pci_release_regions(pdev); |
60479690 | 1946 | |
3d0f8bc7 MW |
1947 | pci_disable_device(pdev); |
1948 | ||
1949 | kfree(ca91cx42_bridge); | |
60479690 MW |
1950 | } |
1951 | ||
c7b50a2a | 1952 | module_pci_driver(ca91cx42_driver); |
60479690 | 1953 | |
12b2d5c0 MW |
1954 | MODULE_PARM_DESC(geoid, "Override geographical addressing"); |
1955 | module_param(geoid, int, 0); | |
1956 | ||
3d0f8bc7 MW |
1957 | MODULE_DESCRIPTION("VME driver for the Tundra Universe II VME bridge"); |
1958 | MODULE_LICENSE("GPL"); |