1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2 /*
3 * Copyright 2013-2016 Freescale Semiconductor Inc.
4 * Copyright 2016-2017,2019-2020 NXP
5 */
6
7 #include <linux/device.h>
8 #include <linux/iommu.h>
9 #include <linux/module.h>
10 #include <linux/mutex.h>
11 #include <linux/slab.h>
12 #include <linux/types.h>
13 #include <linux/vfio.h>
14 #include <linux/fsl/mc.h>
15 #include <linux/delay.h>
16 #include <linux/io-64-nonatomic-hi-lo.h>
17
18 #include "vfio_fsl_mc_private.h"
19
20 static struct fsl_mc_driver vfio_fsl_mc_driver;
21
vfio_fsl_mc_open_device(struct vfio_device * core_vdev)22 static int vfio_fsl_mc_open_device(struct vfio_device *core_vdev)
23 {
24 struct vfio_fsl_mc_device *vdev =
25 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
26 struct fsl_mc_device *mc_dev = vdev->mc_dev;
27 int count = mc_dev->obj_desc.region_count;
28 int i;
29
30 vdev->regions = kcalloc(count, sizeof(struct vfio_fsl_mc_region),
31 GFP_KERNEL_ACCOUNT);
32 if (!vdev->regions)
33 return -ENOMEM;
34
35 for (i = 0; i < count; i++) {
36 struct resource *res = &mc_dev->regions[i];
37 int no_mmap = is_fsl_mc_bus_dprc(mc_dev);
38
39 vdev->regions[i].addr = res->start;
40 vdev->regions[i].size = resource_size(res);
41 vdev->regions[i].type = mc_dev->regions[i].flags & IORESOURCE_BITS;
42 /*
43 * Only regions addressed with PAGE granularity may be
44 * MMAPed securely.
45 */
46 if (!no_mmap && !(vdev->regions[i].addr & ~PAGE_MASK) &&
47 !(vdev->regions[i].size & ~PAGE_MASK))
48 vdev->regions[i].flags |=
49 VFIO_REGION_INFO_FLAG_MMAP;
50 vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
51 if (!(mc_dev->regions[i].flags & IORESOURCE_READONLY))
52 vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_WRITE;
53 }
54
55 return 0;
56 }
57
vfio_fsl_mc_regions_cleanup(struct vfio_fsl_mc_device * vdev)58 static void vfio_fsl_mc_regions_cleanup(struct vfio_fsl_mc_device *vdev)
59 {
60 struct fsl_mc_device *mc_dev = vdev->mc_dev;
61 int i;
62
63 for (i = 0; i < mc_dev->obj_desc.region_count; i++)
64 iounmap(vdev->regions[i].ioaddr);
65 kfree(vdev->regions);
66 }
67
vfio_fsl_mc_reset_device(struct vfio_fsl_mc_device * vdev)68 static int vfio_fsl_mc_reset_device(struct vfio_fsl_mc_device *vdev)
69 {
70 struct fsl_mc_device *mc_dev = vdev->mc_dev;
71 int ret = 0;
72
73 if (is_fsl_mc_bus_dprc(vdev->mc_dev)) {
74 return dprc_reset_container(mc_dev->mc_io, 0,
75 mc_dev->mc_handle,
76 mc_dev->obj_desc.id,
77 DPRC_RESET_OPTION_NON_RECURSIVE);
78 } else {
79 u16 token;
80
81 ret = fsl_mc_obj_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
82 mc_dev->obj_desc.type,
83 &token);
84 if (ret)
85 goto out;
86 ret = fsl_mc_obj_reset(mc_dev->mc_io, 0, token);
87 if (ret) {
88 fsl_mc_obj_close(mc_dev->mc_io, 0, token);
89 goto out;
90 }
91 ret = fsl_mc_obj_close(mc_dev->mc_io, 0, token);
92 }
93 out:
94 return ret;
95 }
96
vfio_fsl_mc_close_device(struct vfio_device * core_vdev)97 static void vfio_fsl_mc_close_device(struct vfio_device *core_vdev)
98 {
99 struct vfio_fsl_mc_device *vdev =
100 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
101 struct fsl_mc_device *mc_dev = vdev->mc_dev;
102 struct device *cont_dev = fsl_mc_cont_dev(&mc_dev->dev);
103 struct fsl_mc_device *mc_cont = to_fsl_mc_device(cont_dev);
104 int ret;
105
106 vfio_fsl_mc_regions_cleanup(vdev);
107
108 /* reset the device before cleaning up the interrupts */
109 ret = vfio_fsl_mc_reset_device(vdev);
110
111 if (ret)
112 dev_warn(&mc_cont->dev,
113 "VFIO_FSL_MC: reset device has failed (%d)\n", ret);
114
115 vfio_fsl_mc_irqs_cleanup(vdev);
116
117 fsl_mc_cleanup_irq_pool(mc_cont);
118 }
119
vfio_fsl_mc_ioctl_get_region_info(struct vfio_device * core_vdev,struct vfio_region_info * info,struct vfio_info_cap * caps)120 static int vfio_fsl_mc_ioctl_get_region_info(struct vfio_device *core_vdev,
121 struct vfio_region_info *info,
122 struct vfio_info_cap *caps)
123 {
124 struct vfio_fsl_mc_device *vdev =
125 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
126 struct fsl_mc_device *mc_dev = vdev->mc_dev;
127
128 if (info->index >= mc_dev->obj_desc.region_count)
129 return -EINVAL;
130
131 /* map offset to the physical address */
132 info->offset = VFIO_FSL_MC_INDEX_TO_OFFSET(info->index);
133 info->size = vdev->regions[info->index].size;
134 info->flags = vdev->regions[info->index].flags;
135 return 0;
136 }
137
vfio_fsl_mc_ioctl(struct vfio_device * core_vdev,unsigned int cmd,unsigned long arg)138 static long vfio_fsl_mc_ioctl(struct vfio_device *core_vdev,
139 unsigned int cmd, unsigned long arg)
140 {
141 unsigned long minsz;
142 struct vfio_fsl_mc_device *vdev =
143 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
144 struct fsl_mc_device *mc_dev = vdev->mc_dev;
145
146 switch (cmd) {
147 case VFIO_DEVICE_GET_INFO:
148 {
149 struct vfio_device_info info;
150
151 minsz = offsetofend(struct vfio_device_info, num_irqs);
152
153 if (copy_from_user(&info, (void __user *)arg, minsz))
154 return -EFAULT;
155
156 if (info.argsz < minsz)
157 return -EINVAL;
158
159 info.flags = VFIO_DEVICE_FLAGS_FSL_MC;
160
161 if (is_fsl_mc_bus_dprc(mc_dev))
162 info.flags |= VFIO_DEVICE_FLAGS_RESET;
163
164 info.num_regions = mc_dev->obj_desc.region_count;
165 info.num_irqs = mc_dev->obj_desc.irq_count;
166
167 return copy_to_user((void __user *)arg, &info, minsz) ?
168 -EFAULT : 0;
169 }
170 case VFIO_DEVICE_GET_IRQ_INFO:
171 {
172 struct vfio_irq_info info;
173
174 minsz = offsetofend(struct vfio_irq_info, count);
175 if (copy_from_user(&info, (void __user *)arg, minsz))
176 return -EFAULT;
177
178 if (info.argsz < minsz)
179 return -EINVAL;
180
181 if (info.index >= mc_dev->obj_desc.irq_count)
182 return -EINVAL;
183
184 info.flags = VFIO_IRQ_INFO_EVENTFD;
185 info.count = 1;
186
187 if (copy_to_user((void __user *)arg, &info, minsz))
188 return -EFAULT;
189 return 0;
190 }
191 case VFIO_DEVICE_SET_IRQS:
192 {
193 struct vfio_irq_set hdr;
194 u8 *data = NULL;
195 int ret = 0;
196 size_t data_size = 0;
197
198 minsz = offsetofend(struct vfio_irq_set, count);
199
200 if (copy_from_user(&hdr, (void __user *)arg, minsz))
201 return -EFAULT;
202
203 ret = vfio_set_irqs_validate_and_prepare(&hdr, mc_dev->obj_desc.irq_count,
204 mc_dev->obj_desc.irq_count, &data_size);
205 if (ret)
206 return ret;
207
208 if (data_size) {
209 data = memdup_user((void __user *)(arg + minsz),
210 data_size);
211 if (IS_ERR(data))
212 return PTR_ERR(data);
213 }
214
215 mutex_lock(&vdev->igate);
216 ret = vfio_fsl_mc_set_irqs_ioctl(vdev, hdr.flags,
217 hdr.index, hdr.start,
218 hdr.count, data);
219 mutex_unlock(&vdev->igate);
220 kfree(data);
221
222 return ret;
223 }
224 case VFIO_DEVICE_RESET:
225 {
226 return vfio_fsl_mc_reset_device(vdev);
227
228 }
229 default:
230 return -ENOTTY;
231 }
232 }
233
vfio_fsl_mc_read(struct vfio_device * core_vdev,char __user * buf,size_t count,loff_t * ppos)234 static ssize_t vfio_fsl_mc_read(struct vfio_device *core_vdev, char __user *buf,
235 size_t count, loff_t *ppos)
236 {
237 struct vfio_fsl_mc_device *vdev =
238 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
239 unsigned int index = VFIO_FSL_MC_OFFSET_TO_INDEX(*ppos);
240 loff_t off = *ppos & VFIO_FSL_MC_OFFSET_MASK;
241 struct fsl_mc_device *mc_dev = vdev->mc_dev;
242 struct vfio_fsl_mc_region *region;
243 u64 data[8];
244 int i;
245
246 if (index >= mc_dev->obj_desc.region_count)
247 return -EINVAL;
248
249 region = &vdev->regions[index];
250
251 if (!(region->flags & VFIO_REGION_INFO_FLAG_READ))
252 return -EINVAL;
253
254 if (!region->ioaddr) {
255 region->ioaddr = ioremap(region->addr, region->size);
256 if (!region->ioaddr)
257 return -ENOMEM;
258 }
259
260 if (count != 64 || off != 0)
261 return -EINVAL;
262
263 for (i = 7; i >= 0; i--)
264 data[i] = readq(region->ioaddr + i * sizeof(uint64_t));
265
266 if (copy_to_user(buf, data, 64))
267 return -EFAULT;
268
269 return count;
270 }
271
272 #define MC_CMD_COMPLETION_TIMEOUT_MS 5000
273 #define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
274
vfio_fsl_mc_send_command(void __iomem * ioaddr,uint64_t * cmd_data)275 static int vfio_fsl_mc_send_command(void __iomem *ioaddr, uint64_t *cmd_data)
276 {
277 int i;
278 enum mc_cmd_status status;
279 unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
280
281 /* Write at command parameter into portal */
282 for (i = 7; i >= 1; i--)
283 writeq_relaxed(cmd_data[i], ioaddr + i * sizeof(uint64_t));
284
285 /* Write command header in the end */
286 writeq(cmd_data[0], ioaddr);
287
288 /* Wait for response before returning to user-space
289 * This can be optimized in future to even prepare response
290 * before returning to user-space and avoid read ioctl.
291 */
292 for (;;) {
293 u64 header;
294 struct mc_cmd_header *resp_hdr;
295
296 header = cpu_to_le64(readq_relaxed(ioaddr));
297
298 resp_hdr = (struct mc_cmd_header *)&header;
299 status = (enum mc_cmd_status)resp_hdr->status;
300 if (status != MC_CMD_STATUS_READY)
301 break;
302
303 udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
304 timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
305 if (timeout_usecs == 0)
306 return -ETIMEDOUT;
307 }
308
309 return 0;
310 }
311
vfio_fsl_mc_write(struct vfio_device * core_vdev,const char __user * buf,size_t count,loff_t * ppos)312 static ssize_t vfio_fsl_mc_write(struct vfio_device *core_vdev,
313 const char __user *buf, size_t count,
314 loff_t *ppos)
315 {
316 struct vfio_fsl_mc_device *vdev =
317 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
318 unsigned int index = VFIO_FSL_MC_OFFSET_TO_INDEX(*ppos);
319 loff_t off = *ppos & VFIO_FSL_MC_OFFSET_MASK;
320 struct fsl_mc_device *mc_dev = vdev->mc_dev;
321 struct vfio_fsl_mc_region *region;
322 u64 data[8];
323 int ret;
324
325 if (index >= mc_dev->obj_desc.region_count)
326 return -EINVAL;
327
328 region = &vdev->regions[index];
329
330 if (!(region->flags & VFIO_REGION_INFO_FLAG_WRITE))
331 return -EINVAL;
332
333 if (!region->ioaddr) {
334 region->ioaddr = ioremap(region->addr, region->size);
335 if (!region->ioaddr)
336 return -ENOMEM;
337 }
338
339 if (count != 64 || off != 0)
340 return -EINVAL;
341
342 if (copy_from_user(&data, buf, 64))
343 return -EFAULT;
344
345 ret = vfio_fsl_mc_send_command(region->ioaddr, data);
346 if (ret)
347 return ret;
348
349 return count;
350
351 }
352
vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,struct vm_area_struct * vma)353 static int vfio_fsl_mc_mmap_mmio(struct vfio_fsl_mc_region region,
354 struct vm_area_struct *vma)
355 {
356 u64 size = vma->vm_end - vma->vm_start;
357 u64 pgoff, base;
358 u8 region_cacheable;
359
360 pgoff = vma->vm_pgoff &
361 ((1U << (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
362 base = pgoff << PAGE_SHIFT;
363
364 if (region.size < PAGE_SIZE || base + size > region.size)
365 return -EINVAL;
366
367 region_cacheable = (region.type & FSL_MC_REGION_CACHEABLE) &&
368 (region.type & FSL_MC_REGION_SHAREABLE);
369 if (!region_cacheable)
370 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
371
372 vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;
373
374 return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
375 size, vma->vm_page_prot);
376 }
377
vfio_fsl_mc_mmap(struct vfio_device * core_vdev,struct vm_area_struct * vma)378 static int vfio_fsl_mc_mmap(struct vfio_device *core_vdev,
379 struct vm_area_struct *vma)
380 {
381 struct vfio_fsl_mc_device *vdev =
382 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
383 struct fsl_mc_device *mc_dev = vdev->mc_dev;
384 unsigned int index;
385
386 index = vma->vm_pgoff >> (VFIO_FSL_MC_OFFSET_SHIFT - PAGE_SHIFT);
387
388 if (vma->vm_end < vma->vm_start)
389 return -EINVAL;
390 if (vma->vm_start & ~PAGE_MASK)
391 return -EINVAL;
392 if (vma->vm_end & ~PAGE_MASK)
393 return -EINVAL;
394 if (!(vma->vm_flags & VM_SHARED))
395 return -EINVAL;
396 if (index >= mc_dev->obj_desc.region_count)
397 return -EINVAL;
398
399 if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))
400 return -EINVAL;
401
402 if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)
403 && (vma->vm_flags & VM_READ))
404 return -EINVAL;
405
406 if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)
407 && (vma->vm_flags & VM_WRITE))
408 return -EINVAL;
409
410 vma->vm_private_data = mc_dev;
411
412 return vfio_fsl_mc_mmap_mmio(vdev->regions[index], vma);
413 }
414
415 static const struct vfio_device_ops vfio_fsl_mc_ops;
vfio_fsl_mc_bus_notifier(struct notifier_block * nb,unsigned long action,void * data)416 static int vfio_fsl_mc_bus_notifier(struct notifier_block *nb,
417 unsigned long action, void *data)
418 {
419 struct vfio_fsl_mc_device *vdev = container_of(nb,
420 struct vfio_fsl_mc_device, nb);
421 struct device *dev = data;
422 struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
423 struct fsl_mc_device *mc_cont = to_fsl_mc_device(mc_dev->dev.parent);
424
425 if (action == BUS_NOTIFY_ADD_DEVICE &&
426 vdev->mc_dev == mc_cont) {
427 mc_dev->driver_override = kasprintf(GFP_KERNEL, "%s",
428 vfio_fsl_mc_ops.name);
429 if (!mc_dev->driver_override)
430 dev_warn(dev, "VFIO_FSL_MC: Setting driver override for device in dprc %s failed\n",
431 dev_name(&mc_cont->dev));
432 else
433 dev_info(dev, "VFIO_FSL_MC: Setting driver override for device in dprc %s\n",
434 dev_name(&mc_cont->dev));
435 } else if (action == BUS_NOTIFY_BOUND_DRIVER &&
436 vdev->mc_dev == mc_cont) {
437 struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
438
439 if (mc_drv && mc_drv != &vfio_fsl_mc_driver)
440 dev_warn(dev, "VFIO_FSL_MC: Object %s bound to driver %s while DPRC bound to vfio-fsl-mc\n",
441 dev_name(dev), mc_drv->driver.name);
442 }
443
444 return 0;
445 }
446
vfio_fsl_mc_init_device(struct vfio_fsl_mc_device * vdev)447 static int vfio_fsl_mc_init_device(struct vfio_fsl_mc_device *vdev)
448 {
449 struct fsl_mc_device *mc_dev = vdev->mc_dev;
450 int ret;
451
452 /* Non-dprc devices share mc_io from parent */
453 if (!is_fsl_mc_bus_dprc(mc_dev)) {
454 struct fsl_mc_device *mc_cont = to_fsl_mc_device(mc_dev->dev.parent);
455
456 mc_dev->mc_io = mc_cont->mc_io;
457 return 0;
458 }
459
460 vdev->nb.notifier_call = vfio_fsl_mc_bus_notifier;
461 ret = bus_register_notifier(&fsl_mc_bus_type, &vdev->nb);
462 if (ret)
463 return ret;
464
465 /* open DPRC, allocate a MC portal */
466 ret = dprc_setup(mc_dev);
467 if (ret) {
468 dev_err(&mc_dev->dev, "VFIO_FSL_MC: Failed to setup DPRC (%d)\n", ret);
469 goto out_nc_unreg;
470 }
471 return 0;
472
473 out_nc_unreg:
474 bus_unregister_notifier(&fsl_mc_bus_type, &vdev->nb);
475 return ret;
476 }
477
vfio_fsl_mc_scan_container(struct fsl_mc_device * mc_dev)478 static int vfio_fsl_mc_scan_container(struct fsl_mc_device *mc_dev)
479 {
480 int ret;
481
482 /* non dprc devices do not scan for other devices */
483 if (!is_fsl_mc_bus_dprc(mc_dev))
484 return 0;
485 ret = dprc_scan_container(mc_dev, false);
486 if (ret) {
487 dev_err(&mc_dev->dev,
488 "VFIO_FSL_MC: Container scanning failed (%d)\n", ret);
489 dprc_remove_devices(mc_dev, NULL, 0);
490 return ret;
491 }
492 return 0;
493 }
494
vfio_fsl_uninit_device(struct vfio_fsl_mc_device * vdev)495 static void vfio_fsl_uninit_device(struct vfio_fsl_mc_device *vdev)
496 {
497 struct fsl_mc_device *mc_dev = vdev->mc_dev;
498
499 if (!is_fsl_mc_bus_dprc(mc_dev))
500 return;
501
502 dprc_cleanup(mc_dev);
503 bus_unregister_notifier(&fsl_mc_bus_type, &vdev->nb);
504 }
505
vfio_fsl_mc_init_dev(struct vfio_device * core_vdev)506 static int vfio_fsl_mc_init_dev(struct vfio_device *core_vdev)
507 {
508 struct vfio_fsl_mc_device *vdev =
509 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
510 struct fsl_mc_device *mc_dev = to_fsl_mc_device(core_vdev->dev);
511 int ret;
512
513 vdev->mc_dev = mc_dev;
514 mutex_init(&vdev->igate);
515
516 if (is_fsl_mc_bus_dprc(mc_dev))
517 ret = vfio_assign_device_set(core_vdev, &mc_dev->dev);
518 else
519 ret = vfio_assign_device_set(core_vdev, mc_dev->dev.parent);
520
521 if (ret)
522 return ret;
523
524 /* device_set is released by vfio core if @init fails */
525 return vfio_fsl_mc_init_device(vdev);
526 }
527
vfio_fsl_mc_probe(struct fsl_mc_device * mc_dev)528 static int vfio_fsl_mc_probe(struct fsl_mc_device *mc_dev)
529 {
530 struct vfio_fsl_mc_device *vdev;
531 struct device *dev = &mc_dev->dev;
532 int ret;
533
534 dev_err_once(dev, "DEPRECATION: vfio-fsl-mc is deprecated and will be removed in a future kernel release\n");
535
536 vdev = vfio_alloc_device(vfio_fsl_mc_device, vdev, dev,
537 &vfio_fsl_mc_ops);
538 if (IS_ERR(vdev))
539 return PTR_ERR(vdev);
540
541 ret = vfio_register_group_dev(&vdev->vdev);
542 if (ret) {
543 dev_err(dev, "VFIO_FSL_MC: Failed to add to vfio group\n");
544 goto out_put_vdev;
545 }
546
547 ret = vfio_fsl_mc_scan_container(mc_dev);
548 if (ret)
549 goto out_group_dev;
550 dev_set_drvdata(dev, vdev);
551 return 0;
552
553 out_group_dev:
554 vfio_unregister_group_dev(&vdev->vdev);
555 out_put_vdev:
556 vfio_put_device(&vdev->vdev);
557 return ret;
558 }
559
vfio_fsl_mc_release_dev(struct vfio_device * core_vdev)560 static void vfio_fsl_mc_release_dev(struct vfio_device *core_vdev)
561 {
562 struct vfio_fsl_mc_device *vdev =
563 container_of(core_vdev, struct vfio_fsl_mc_device, vdev);
564
565 vfio_fsl_uninit_device(vdev);
566 mutex_destroy(&vdev->igate);
567 }
568
vfio_fsl_mc_remove(struct fsl_mc_device * mc_dev)569 static void vfio_fsl_mc_remove(struct fsl_mc_device *mc_dev)
570 {
571 struct device *dev = &mc_dev->dev;
572 struct vfio_fsl_mc_device *vdev = dev_get_drvdata(dev);
573
574 vfio_unregister_group_dev(&vdev->vdev);
575 dprc_remove_devices(mc_dev, NULL, 0);
576 vfio_put_device(&vdev->vdev);
577 }
578
579 static const struct vfio_device_ops vfio_fsl_mc_ops = {
580 .name = "vfio-fsl-mc",
581 .init = vfio_fsl_mc_init_dev,
582 .release = vfio_fsl_mc_release_dev,
583 .open_device = vfio_fsl_mc_open_device,
584 .close_device = vfio_fsl_mc_close_device,
585 .ioctl = vfio_fsl_mc_ioctl,
586 .get_region_info_caps = vfio_fsl_mc_ioctl_get_region_info,
587 .read = vfio_fsl_mc_read,
588 .write = vfio_fsl_mc_write,
589 .mmap = vfio_fsl_mc_mmap,
590 .bind_iommufd = vfio_iommufd_physical_bind,
591 .unbind_iommufd = vfio_iommufd_physical_unbind,
592 .attach_ioas = vfio_iommufd_physical_attach_ioas,
593 .detach_ioas = vfio_iommufd_physical_detach_ioas,
594 };
595
596 static struct fsl_mc_driver vfio_fsl_mc_driver = {
597 .probe = vfio_fsl_mc_probe,
598 .remove = vfio_fsl_mc_remove,
599 .driver = {
600 .name = "vfio-fsl-mc",
601 },
602 .driver_managed_dma = true,
603 };
604
605 module_fsl_mc_driver(vfio_fsl_mc_driver);
606
607 MODULE_LICENSE("Dual BSD/GPL");
608 MODULE_DESCRIPTION("VFIO for FSL-MC devices - User Level meta-driver");
609