1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2015-2018 Etnaviv Project
6 #include <linux/component.h>
7 #include <linux/of_platform.h>
8 #include <drm/drm_of.h>
10 #include "etnaviv_cmdbuf.h"
11 #include "etnaviv_drv.h"
12 #include "etnaviv_gpu.h"
13 #include "etnaviv_gem.h"
14 #include "etnaviv_mmu.h"
15 #include "etnaviv_perfmon.h"
22 static void load_gpu(struct drm_device *dev)
24 struct etnaviv_drm_private *priv = dev->dev_private;
27 for (i = 0; i < ETNA_MAX_PIPES; i++) {
28 struct etnaviv_gpu *g = priv->gpu[i];
33 ret = etnaviv_gpu_init(g);
40 static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
42 struct etnaviv_drm_private *priv = dev->dev_private;
43 struct etnaviv_file_private *ctx;
46 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
50 for (i = 0; i < ETNA_MAX_PIPES; i++) {
51 struct etnaviv_gpu *gpu = priv->gpu[i];
52 struct drm_sched_rq *rq;
55 rq = &gpu->sched.sched_rq[DRM_SCHED_PRIORITY_NORMAL];
56 drm_sched_entity_init(&ctx->sched_entity[i],
61 file->driver_priv = ctx;
66 static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file)
68 struct etnaviv_drm_private *priv = dev->dev_private;
69 struct etnaviv_file_private *ctx = file->driver_priv;
72 for (i = 0; i < ETNA_MAX_PIPES; i++) {
73 struct etnaviv_gpu *gpu = priv->gpu[i];
76 drm_sched_entity_destroy(&ctx->sched_entity[i]);
86 #ifdef CONFIG_DEBUG_FS
87 static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
89 struct etnaviv_drm_private *priv = dev->dev_private;
91 etnaviv_gem_describe_objects(priv, m);
96 static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
98 struct drm_printer p = drm_seq_file_printer(m);
100 read_lock(&dev->vma_offset_manager->vm_lock);
101 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
102 read_unlock(&dev->vma_offset_manager->vm_lock);
107 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
109 struct drm_printer p = drm_seq_file_printer(m);
111 seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
113 mutex_lock(&gpu->mmu->lock);
114 drm_mm_print(&gpu->mmu->mm, &p);
115 mutex_unlock(&gpu->mmu->lock);
120 static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
122 struct etnaviv_cmdbuf *buf = &gpu->buffer;
123 u32 size = buf->size;
124 u32 *ptr = buf->vaddr;
127 seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
128 buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf),
129 size - buf->user_size);
131 for (i = 0; i < size / 4; i++) {
135 seq_printf(m, "\t0x%p: ", ptr + i);
136 seq_printf(m, "%08x ", *(ptr + i));
141 static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
143 seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));
145 mutex_lock(&gpu->lock);
146 etnaviv_buffer_dump(gpu, m);
147 mutex_unlock(&gpu->lock);
152 static int show_unlocked(struct seq_file *m, void *arg)
154 struct drm_info_node *node = (struct drm_info_node *) m->private;
155 struct drm_device *dev = node->minor->dev;
156 int (*show)(struct drm_device *dev, struct seq_file *m) =
157 node->info_ent->data;
162 static int show_each_gpu(struct seq_file *m, void *arg)
164 struct drm_info_node *node = (struct drm_info_node *) m->private;
165 struct drm_device *dev = node->minor->dev;
166 struct etnaviv_drm_private *priv = dev->dev_private;
167 struct etnaviv_gpu *gpu;
168 int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
169 node->info_ent->data;
173 for (i = 0; i < ETNA_MAX_PIPES; i++) {
186 static struct drm_info_list etnaviv_debugfs_list[] = {
187 {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
188 {"gem", show_unlocked, 0, etnaviv_gem_show},
189 { "mm", show_unlocked, 0, etnaviv_mm_show },
190 {"mmu", show_each_gpu, 0, etnaviv_mmu_show},
191 {"ring", show_each_gpu, 0, etnaviv_ring_show},
194 static int etnaviv_debugfs_init(struct drm_minor *minor)
196 struct drm_device *dev = minor->dev;
199 ret = drm_debugfs_create_files(etnaviv_debugfs_list,
200 ARRAY_SIZE(etnaviv_debugfs_list),
201 minor->debugfs_root, minor);
204 dev_err(dev->dev, "could not install etnaviv_debugfs_list\n");
216 static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
217 struct drm_file *file)
219 struct etnaviv_drm_private *priv = dev->dev_private;
220 struct drm_etnaviv_param *args = data;
221 struct etnaviv_gpu *gpu;
223 if (args->pipe >= ETNA_MAX_PIPES)
226 gpu = priv->gpu[args->pipe];
230 return etnaviv_gpu_get_param(gpu, args->param, &args->value);
233 static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
234 struct drm_file *file)
236 struct drm_etnaviv_gem_new *args = data;
238 if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
242 return etnaviv_gem_new_handle(dev, file, args->size,
243 args->flags, &args->handle);
246 #define TS(t) ((struct timespec){ \
247 .tv_sec = (t).tv_sec, \
248 .tv_nsec = (t).tv_nsec \
251 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
252 struct drm_file *file)
254 struct drm_etnaviv_gem_cpu_prep *args = data;
255 struct drm_gem_object *obj;
258 if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
261 obj = drm_gem_object_lookup(file, args->handle);
265 ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout));
267 drm_gem_object_put_unlocked(obj);
272 static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
273 struct drm_file *file)
275 struct drm_etnaviv_gem_cpu_fini *args = data;
276 struct drm_gem_object *obj;
282 obj = drm_gem_object_lookup(file, args->handle);
286 ret = etnaviv_gem_cpu_fini(obj);
288 drm_gem_object_put_unlocked(obj);
293 static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data,
294 struct drm_file *file)
296 struct drm_etnaviv_gem_info *args = data;
297 struct drm_gem_object *obj;
303 obj = drm_gem_object_lookup(file, args->handle);
307 ret = etnaviv_gem_mmap_offset(obj, &args->offset);
308 drm_gem_object_put_unlocked(obj);
313 static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
314 struct drm_file *file)
316 struct drm_etnaviv_wait_fence *args = data;
317 struct etnaviv_drm_private *priv = dev->dev_private;
318 struct timespec *timeout = &TS(args->timeout);
319 struct etnaviv_gpu *gpu;
321 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
324 if (args->pipe >= ETNA_MAX_PIPES)
327 gpu = priv->gpu[args->pipe];
331 if (args->flags & ETNA_WAIT_NONBLOCK)
334 return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
338 static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
339 struct drm_file *file)
341 struct drm_etnaviv_gem_userptr *args = data;
343 if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
347 if (offset_in_page(args->user_ptr | args->user_size) ||
348 (uintptr_t)args->user_ptr != args->user_ptr ||
349 (u32)args->user_size != args->user_size ||
350 args->user_ptr & ~PAGE_MASK)
353 if (!access_ok((void __user *)(unsigned long)args->user_ptr,
357 return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
358 args->user_size, args->flags,
362 static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
363 struct drm_file *file)
365 struct etnaviv_drm_private *priv = dev->dev_private;
366 struct drm_etnaviv_gem_wait *args = data;
367 struct timespec *timeout = &TS(args->timeout);
368 struct drm_gem_object *obj;
369 struct etnaviv_gpu *gpu;
372 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
375 if (args->pipe >= ETNA_MAX_PIPES)
378 gpu = priv->gpu[args->pipe];
382 obj = drm_gem_object_lookup(file, args->handle);
386 if (args->flags & ETNA_WAIT_NONBLOCK)
389 ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
391 drm_gem_object_put_unlocked(obj);
396 static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data,
397 struct drm_file *file)
399 struct etnaviv_drm_private *priv = dev->dev_private;
400 struct drm_etnaviv_pm_domain *args = data;
401 struct etnaviv_gpu *gpu;
403 if (args->pipe >= ETNA_MAX_PIPES)
406 gpu = priv->gpu[args->pipe];
410 return etnaviv_pm_query_dom(gpu, args);
413 static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data,
414 struct drm_file *file)
416 struct etnaviv_drm_private *priv = dev->dev_private;
417 struct drm_etnaviv_pm_signal *args = data;
418 struct etnaviv_gpu *gpu;
420 if (args->pipe >= ETNA_MAX_PIPES)
423 gpu = priv->gpu[args->pipe];
427 return etnaviv_pm_query_sig(gpu, args);
430 static const struct drm_ioctl_desc etnaviv_ioctls[] = {
431 #define ETNA_IOCTL(n, func, flags) \
432 DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
433 ETNA_IOCTL(GET_PARAM, get_param, DRM_AUTH|DRM_RENDER_ALLOW),
434 ETNA_IOCTL(GEM_NEW, gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
435 ETNA_IOCTL(GEM_INFO, gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
436 ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
437 ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
438 ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
439 ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
440 ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_AUTH|DRM_RENDER_ALLOW),
441 ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_AUTH|DRM_RENDER_ALLOW),
442 ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_AUTH|DRM_RENDER_ALLOW),
443 ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_AUTH|DRM_RENDER_ALLOW),
446 static const struct vm_operations_struct vm_ops = {
447 .fault = etnaviv_gem_fault,
448 .open = drm_gem_vm_open,
449 .close = drm_gem_vm_close,
452 static const struct file_operations fops = {
453 .owner = THIS_MODULE,
455 .release = drm_release,
456 .unlocked_ioctl = drm_ioctl,
457 .compat_ioctl = drm_compat_ioctl,
461 .mmap = etnaviv_gem_mmap,
464 static struct drm_driver etnaviv_drm_driver = {
465 .driver_features = DRIVER_GEM |
468 .open = etnaviv_open,
469 .postclose = etnaviv_postclose,
470 .gem_free_object_unlocked = etnaviv_gem_free_object,
471 .gem_vm_ops = &vm_ops,
472 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
473 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
474 .gem_prime_export = drm_gem_prime_export,
475 .gem_prime_import = drm_gem_prime_import,
476 .gem_prime_res_obj = etnaviv_gem_prime_res_obj,
477 .gem_prime_pin = etnaviv_gem_prime_pin,
478 .gem_prime_unpin = etnaviv_gem_prime_unpin,
479 .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
480 .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
481 .gem_prime_vmap = etnaviv_gem_prime_vmap,
482 .gem_prime_vunmap = etnaviv_gem_prime_vunmap,
483 .gem_prime_mmap = etnaviv_gem_prime_mmap,
484 #ifdef CONFIG_DEBUG_FS
485 .debugfs_init = etnaviv_debugfs_init,
487 .ioctls = etnaviv_ioctls,
488 .num_ioctls = DRM_ETNAVIV_NUM_IOCTLS,
491 .desc = "etnaviv DRM",
500 static int etnaviv_bind(struct device *dev)
502 struct etnaviv_drm_private *priv;
503 struct drm_device *drm;
506 drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
510 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
512 dev_err(dev, "failed to allocate private data\n");
516 drm->dev_private = priv;
518 dev->dma_parms = &priv->dma_parms;
519 dma_set_max_seg_size(dev, SZ_2G);
521 mutex_init(&priv->gem_lock);
522 INIT_LIST_HEAD(&priv->gem_list);
525 dev_set_drvdata(dev, drm);
527 ret = component_bind_all(dev, drm);
533 ret = drm_dev_register(drm, 0);
540 component_unbind_all(dev, drm);
549 static void etnaviv_unbind(struct device *dev)
551 struct drm_device *drm = dev_get_drvdata(dev);
552 struct etnaviv_drm_private *priv = drm->dev_private;
554 drm_dev_unregister(drm);
556 component_unbind_all(dev, drm);
558 dev->dma_parms = NULL;
560 drm->dev_private = NULL;
566 static const struct component_master_ops etnaviv_master_ops = {
567 .bind = etnaviv_bind,
568 .unbind = etnaviv_unbind,
571 static int compare_of(struct device *dev, void *data)
573 struct device_node *np = data;
575 return dev->of_node == np;
578 static int compare_str(struct device *dev, void *data)
580 return !strcmp(dev_name(dev), data);
583 static int etnaviv_pdev_probe(struct platform_device *pdev)
585 struct device *dev = &pdev->dev;
586 struct component_match *match = NULL;
588 if (!dev->platform_data) {
589 struct device_node *core_node;
591 for_each_compatible_node(core_node, NULL, "vivante,gc") {
592 if (!of_device_is_available(core_node))
595 drm_of_component_match_add(&pdev->dev, &match,
596 compare_of, core_node);
599 char **names = dev->platform_data;
602 for (i = 0; names[i]; i++)
603 component_match_add(dev, &match, compare_str, names[i]);
606 return component_master_add_with_match(dev, &etnaviv_master_ops, match);
609 static int etnaviv_pdev_remove(struct platform_device *pdev)
611 component_master_del(&pdev->dev, &etnaviv_master_ops);
616 static struct platform_driver etnaviv_platform_driver = {
617 .probe = etnaviv_pdev_probe,
618 .remove = etnaviv_pdev_remove,
624 static struct platform_device *etnaviv_drm;
626 static int __init etnaviv_init(void)
628 struct platform_device *pdev;
630 struct device_node *np;
632 etnaviv_validate_init();
634 ret = platform_driver_register(&etnaviv_gpu_driver);
638 ret = platform_driver_register(&etnaviv_platform_driver);
640 goto unregister_gpu_driver;
643 * If the DT contains at least one available GPU device, instantiate
644 * the DRM platform device.
646 for_each_compatible_node(np, NULL, "vivante,gc") {
647 if (!of_device_is_available(np))
650 pdev = platform_device_alloc("etnaviv", -1);
654 goto unregister_platform_driver;
656 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40);
657 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
660 * Apply the same DMA configuration to the virtual etnaviv
661 * device as the GPU we found. This assumes that all Vivante
662 * GPUs in the system share the same DMA constraints.
664 of_dma_configure(&pdev->dev, np, true);
666 ret = platform_device_add(pdev);
668 platform_device_put(pdev);
670 goto unregister_platform_driver;
680 unregister_platform_driver:
681 platform_driver_unregister(&etnaviv_platform_driver);
682 unregister_gpu_driver:
683 platform_driver_unregister(&etnaviv_gpu_driver);
686 module_init(etnaviv_init);
688 static void __exit etnaviv_exit(void)
690 platform_device_unregister(etnaviv_drm);
691 platform_driver_unregister(&etnaviv_platform_driver);
692 platform_driver_unregister(&etnaviv_gpu_driver);
694 module_exit(etnaviv_exit);
696 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
697 MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
698 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
699 MODULE_DESCRIPTION("etnaviv DRM Driver");
700 MODULE_LICENSE("GPL v2");
701 MODULE_ALIAS("platform:etnaviv");