1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2015-2018 Etnaviv Project
6 #include <linux/component.h>
7 #include <linux/dma-mapping.h>
8 #include <linux/module.h>
9 #include <linux/of_platform.h>
10 #include <linux/uaccess.h>
12 #include <drm/drm_debugfs.h>
13 #include <drm/drm_drv.h>
14 #include <drm/drm_file.h>
15 #include <drm/drm_ioctl.h>
16 #include <drm/drm_of.h>
17 #include <drm/drm_prime.h>
19 #include "etnaviv_cmdbuf.h"
20 #include "etnaviv_drv.h"
21 #include "etnaviv_gpu.h"
22 #include "etnaviv_gem.h"
23 #include "etnaviv_mmu.h"
24 #include "etnaviv_perfmon.h"
31 static void load_gpu(struct drm_device *dev)
33 struct etnaviv_drm_private *priv = dev->dev_private;
36 for (i = 0; i < ETNA_MAX_PIPES; i++) {
37 struct etnaviv_gpu *g = priv->gpu[i];
42 ret = etnaviv_gpu_init(g);
49 static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
51 struct etnaviv_drm_private *priv = dev->dev_private;
52 struct etnaviv_file_private *ctx;
55 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
59 ctx->mmu = etnaviv_iommu_context_init(priv->mmu_global,
60 priv->cmdbuf_suballoc);
66 for (i = 0; i < ETNA_MAX_PIPES; i++) {
67 struct etnaviv_gpu *gpu = priv->gpu[i];
68 struct drm_gpu_scheduler *sched;
72 drm_sched_entity_init(&ctx->sched_entity[i],
73 DRM_SCHED_PRIORITY_NORMAL, &sched,
78 file->driver_priv = ctx;
87 static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file)
89 struct etnaviv_drm_private *priv = dev->dev_private;
90 struct etnaviv_file_private *ctx = file->driver_priv;
93 for (i = 0; i < ETNA_MAX_PIPES; i++) {
94 struct etnaviv_gpu *gpu = priv->gpu[i];
97 drm_sched_entity_destroy(&ctx->sched_entity[i]);
100 etnaviv_iommu_context_put(ctx->mmu);
109 #ifdef CONFIG_DEBUG_FS
110 static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
112 struct etnaviv_drm_private *priv = dev->dev_private;
114 etnaviv_gem_describe_objects(priv, m);
119 static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
121 struct drm_printer p = drm_seq_file_printer(m);
123 read_lock(&dev->vma_offset_manager->vm_lock);
124 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
125 read_unlock(&dev->vma_offset_manager->vm_lock);
130 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
132 struct drm_printer p = drm_seq_file_printer(m);
133 struct etnaviv_iommu_context *mmu_context;
135 seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
138 * Lock the GPU to avoid a MMU context switch just now and elevate
139 * the refcount of the current context to avoid it disappearing from
142 mutex_lock(&gpu->lock);
143 mmu_context = gpu->mmu_context;
145 etnaviv_iommu_context_get(mmu_context);
146 mutex_unlock(&gpu->lock);
151 mutex_lock(&mmu_context->lock);
152 drm_mm_print(&mmu_context->mm, &p);
153 mutex_unlock(&mmu_context->lock);
155 etnaviv_iommu_context_put(mmu_context);
160 static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
162 struct etnaviv_cmdbuf *buf = &gpu->buffer;
163 u32 size = buf->size;
164 u32 *ptr = buf->vaddr;
167 seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
168 buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf),
169 size - buf->user_size);
171 for (i = 0; i < size / 4; i++) {
175 seq_printf(m, "\t0x%p: ", ptr + i);
176 seq_printf(m, "%08x ", *(ptr + i));
181 static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
183 seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));
185 mutex_lock(&gpu->lock);
186 etnaviv_buffer_dump(gpu, m);
187 mutex_unlock(&gpu->lock);
192 static int show_unlocked(struct seq_file *m, void *arg)
194 struct drm_info_node *node = (struct drm_info_node *) m->private;
195 struct drm_device *dev = node->minor->dev;
196 int (*show)(struct drm_device *dev, struct seq_file *m) =
197 node->info_ent->data;
202 static int show_each_gpu(struct seq_file *m, void *arg)
204 struct drm_info_node *node = (struct drm_info_node *) m->private;
205 struct drm_device *dev = node->minor->dev;
206 struct etnaviv_drm_private *priv = dev->dev_private;
207 struct etnaviv_gpu *gpu;
208 int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
209 node->info_ent->data;
213 for (i = 0; i < ETNA_MAX_PIPES; i++) {
226 static struct drm_info_list etnaviv_debugfs_list[] = {
227 {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
228 {"gem", show_unlocked, 0, etnaviv_gem_show},
229 { "mm", show_unlocked, 0, etnaviv_mm_show },
230 {"mmu", show_each_gpu, 0, etnaviv_mmu_show},
231 {"ring", show_each_gpu, 0, etnaviv_ring_show},
234 static void etnaviv_debugfs_init(struct drm_minor *minor)
236 drm_debugfs_create_files(etnaviv_debugfs_list,
237 ARRAY_SIZE(etnaviv_debugfs_list),
238 minor->debugfs_root, minor);
246 static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
247 struct drm_file *file)
249 struct etnaviv_drm_private *priv = dev->dev_private;
250 struct drm_etnaviv_param *args = data;
251 struct etnaviv_gpu *gpu;
253 if (args->pipe >= ETNA_MAX_PIPES)
256 gpu = priv->gpu[args->pipe];
260 return etnaviv_gpu_get_param(gpu, args->param, &args->value);
263 static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
264 struct drm_file *file)
266 struct drm_etnaviv_gem_new *args = data;
268 if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
272 return etnaviv_gem_new_handle(dev, file, args->size,
273 args->flags, &args->handle);
276 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
277 struct drm_file *file)
279 struct drm_etnaviv_gem_cpu_prep *args = data;
280 struct drm_gem_object *obj;
283 if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
286 obj = drm_gem_object_lookup(file, args->handle);
290 ret = etnaviv_gem_cpu_prep(obj, args->op, &args->timeout);
292 drm_gem_object_put(obj);
297 static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
298 struct drm_file *file)
300 struct drm_etnaviv_gem_cpu_fini *args = data;
301 struct drm_gem_object *obj;
307 obj = drm_gem_object_lookup(file, args->handle);
311 ret = etnaviv_gem_cpu_fini(obj);
313 drm_gem_object_put(obj);
318 static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data,
319 struct drm_file *file)
321 struct drm_etnaviv_gem_info *args = data;
322 struct drm_gem_object *obj;
328 obj = drm_gem_object_lookup(file, args->handle);
332 ret = etnaviv_gem_mmap_offset(obj, &args->offset);
333 drm_gem_object_put(obj);
338 static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
339 struct drm_file *file)
341 struct drm_etnaviv_wait_fence *args = data;
342 struct etnaviv_drm_private *priv = dev->dev_private;
343 struct drm_etnaviv_timespec *timeout = &args->timeout;
344 struct etnaviv_gpu *gpu;
346 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
349 if (args->pipe >= ETNA_MAX_PIPES)
352 gpu = priv->gpu[args->pipe];
356 if (args->flags & ETNA_WAIT_NONBLOCK)
359 return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
363 static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
364 struct drm_file *file)
366 struct drm_etnaviv_gem_userptr *args = data;
368 if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
372 if (offset_in_page(args->user_ptr | args->user_size) ||
373 (uintptr_t)args->user_ptr != args->user_ptr ||
374 (u32)args->user_size != args->user_size ||
375 args->user_ptr & ~PAGE_MASK)
378 if (!access_ok((void __user *)(unsigned long)args->user_ptr,
382 return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
383 args->user_size, args->flags,
387 static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
388 struct drm_file *file)
390 struct etnaviv_drm_private *priv = dev->dev_private;
391 struct drm_etnaviv_gem_wait *args = data;
392 struct drm_etnaviv_timespec *timeout = &args->timeout;
393 struct drm_gem_object *obj;
394 struct etnaviv_gpu *gpu;
397 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
400 if (args->pipe >= ETNA_MAX_PIPES)
403 gpu = priv->gpu[args->pipe];
407 obj = drm_gem_object_lookup(file, args->handle);
411 if (args->flags & ETNA_WAIT_NONBLOCK)
414 ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
416 drm_gem_object_put(obj);
421 static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data,
422 struct drm_file *file)
424 struct etnaviv_drm_private *priv = dev->dev_private;
425 struct drm_etnaviv_pm_domain *args = data;
426 struct etnaviv_gpu *gpu;
428 if (args->pipe >= ETNA_MAX_PIPES)
431 gpu = priv->gpu[args->pipe];
435 return etnaviv_pm_query_dom(gpu, args);
438 static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data,
439 struct drm_file *file)
441 struct etnaviv_drm_private *priv = dev->dev_private;
442 struct drm_etnaviv_pm_signal *args = data;
443 struct etnaviv_gpu *gpu;
445 if (args->pipe >= ETNA_MAX_PIPES)
448 gpu = priv->gpu[args->pipe];
452 return etnaviv_pm_query_sig(gpu, args);
455 static const struct drm_ioctl_desc etnaviv_ioctls[] = {
456 #define ETNA_IOCTL(n, func, flags) \
457 DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
458 ETNA_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW),
459 ETNA_IOCTL(GEM_NEW, gem_new, DRM_RENDER_ALLOW),
460 ETNA_IOCTL(GEM_INFO, gem_info, DRM_RENDER_ALLOW),
461 ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_RENDER_ALLOW),
462 ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_RENDER_ALLOW),
463 ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_RENDER_ALLOW),
464 ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_RENDER_ALLOW),
465 ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_RENDER_ALLOW),
466 ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_RENDER_ALLOW),
467 ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_RENDER_ALLOW),
468 ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
471 static const struct vm_operations_struct vm_ops = {
472 .fault = etnaviv_gem_fault,
473 .open = drm_gem_vm_open,
474 .close = drm_gem_vm_close,
477 static const struct file_operations fops = {
478 .owner = THIS_MODULE,
480 .release = drm_release,
481 .unlocked_ioctl = drm_ioctl,
482 .compat_ioctl = drm_compat_ioctl,
486 .mmap = etnaviv_gem_mmap,
489 static struct drm_driver etnaviv_drm_driver = {
490 .driver_features = DRIVER_GEM | DRIVER_RENDER,
491 .open = etnaviv_open,
492 .postclose = etnaviv_postclose,
493 .gem_free_object_unlocked = etnaviv_gem_free_object,
494 .gem_vm_ops = &vm_ops,
495 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
496 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
497 .gem_prime_pin = etnaviv_gem_prime_pin,
498 .gem_prime_unpin = etnaviv_gem_prime_unpin,
499 .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
500 .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
501 .gem_prime_vmap = etnaviv_gem_prime_vmap,
502 .gem_prime_vunmap = etnaviv_gem_prime_vunmap,
503 .gem_prime_mmap = etnaviv_gem_prime_mmap,
504 #ifdef CONFIG_DEBUG_FS
505 .debugfs_init = etnaviv_debugfs_init,
507 .ioctls = etnaviv_ioctls,
508 .num_ioctls = DRM_ETNAVIV_NUM_IOCTLS,
511 .desc = "etnaviv DRM",
520 static int etnaviv_bind(struct device *dev)
522 struct etnaviv_drm_private *priv;
523 struct drm_device *drm;
526 drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
530 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
532 dev_err(dev, "failed to allocate private data\n");
536 drm->dev_private = priv;
538 dev->dma_parms = &priv->dma_parms;
539 dma_set_max_seg_size(dev, SZ_2G);
541 mutex_init(&priv->gem_lock);
542 INIT_LIST_HEAD(&priv->gem_list);
544 priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN;
546 priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev);
547 if (IS_ERR(priv->cmdbuf_suballoc)) {
548 dev_err(drm->dev, "Failed to create cmdbuf suballocator\n");
549 ret = PTR_ERR(priv->cmdbuf_suballoc);
553 dev_set_drvdata(dev, drm);
555 ret = component_bind_all(dev, drm);
557 goto out_destroy_suballoc;
561 ret = drm_dev_register(drm, 0);
568 component_unbind_all(dev, drm);
569 out_destroy_suballoc:
570 etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
579 static void etnaviv_unbind(struct device *dev)
581 struct drm_device *drm = dev_get_drvdata(dev);
582 struct etnaviv_drm_private *priv = drm->dev_private;
584 drm_dev_unregister(drm);
586 component_unbind_all(dev, drm);
588 dev->dma_parms = NULL;
590 etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
592 drm->dev_private = NULL;
598 static const struct component_master_ops etnaviv_master_ops = {
599 .bind = etnaviv_bind,
600 .unbind = etnaviv_unbind,
603 static int compare_of(struct device *dev, void *data)
605 struct device_node *np = data;
607 return dev->of_node == np;
610 static int compare_str(struct device *dev, void *data)
612 return !strcmp(dev_name(dev), data);
615 static int etnaviv_pdev_probe(struct platform_device *pdev)
617 struct device *dev = &pdev->dev;
618 struct component_match *match = NULL;
620 if (!dev->platform_data) {
621 struct device_node *core_node;
623 for_each_compatible_node(core_node, NULL, "vivante,gc") {
624 if (!of_device_is_available(core_node))
627 drm_of_component_match_add(&pdev->dev, &match,
628 compare_of, core_node);
631 char **names = dev->platform_data;
634 for (i = 0; names[i]; i++)
635 component_match_add(dev, &match, compare_str, names[i]);
638 return component_master_add_with_match(dev, &etnaviv_master_ops, match);
641 static int etnaviv_pdev_remove(struct platform_device *pdev)
643 component_master_del(&pdev->dev, &etnaviv_master_ops);
648 static struct platform_driver etnaviv_platform_driver = {
649 .probe = etnaviv_pdev_probe,
650 .remove = etnaviv_pdev_remove,
656 static struct platform_device *etnaviv_drm;
658 static int __init etnaviv_init(void)
660 struct platform_device *pdev;
662 struct device_node *np;
664 etnaviv_validate_init();
666 ret = platform_driver_register(&etnaviv_gpu_driver);
670 ret = platform_driver_register(&etnaviv_platform_driver);
672 goto unregister_gpu_driver;
675 * If the DT contains at least one available GPU device, instantiate
676 * the DRM platform device.
678 for_each_compatible_node(np, NULL, "vivante,gc") {
679 if (!of_device_is_available(np))
682 pdev = platform_device_alloc("etnaviv", -1);
686 goto unregister_platform_driver;
688 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40);
689 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
692 * Apply the same DMA configuration to the virtual etnaviv
693 * device as the GPU we found. This assumes that all Vivante
694 * GPUs in the system share the same DMA constraints.
696 of_dma_configure(&pdev->dev, np, true);
698 ret = platform_device_add(pdev);
700 platform_device_put(pdev);
702 goto unregister_platform_driver;
712 unregister_platform_driver:
713 platform_driver_unregister(&etnaviv_platform_driver);
714 unregister_gpu_driver:
715 platform_driver_unregister(&etnaviv_gpu_driver);
718 module_init(etnaviv_init);
720 static void __exit etnaviv_exit(void)
722 platform_device_unregister(etnaviv_drm);
723 platform_driver_unregister(&etnaviv_platform_driver);
724 platform_driver_unregister(&etnaviv_gpu_driver);
726 module_exit(etnaviv_exit);
728 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
729 MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
730 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
731 MODULE_DESCRIPTION("etnaviv DRM Driver");
732 MODULE_LICENSE("GPL v2");
733 MODULE_ALIAS("platform:etnaviv");