2 * Copyright (C) 2015 Etnaviv Project
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published by
6 * the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program. If not, see <http://www.gnu.org/licenses/>.
17 #include <linux/component.h>
18 #include <linux/of_platform.h>
19 #include <drm/drm_of.h>
21 #include "etnaviv_drv.h"
22 #include "etnaviv_gpu.h"
23 #include "etnaviv_gem.h"
24 #include "etnaviv_mmu.h"
25 #include "etnaviv_gem.h"
27 #ifdef CONFIG_DRM_ETNAVIV_REGISTER_LOGGING
29 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
30 module_param(reglog, bool, 0600);
35 void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name,
42 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
44 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
46 ptr = devm_ioremap_resource(&pdev->dev, res);
48 dev_err(&pdev->dev, "failed to ioremap %s: %ld\n", name,
54 dev_printk(KERN_DEBUG, &pdev->dev, "IO:region %s 0x%p %08zx\n",
55 dbgname, ptr, (size_t)resource_size(res));
60 void etnaviv_writel(u32 data, void __iomem *addr)
63 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
68 u32 etnaviv_readl(const void __iomem *addr)
70 u32 val = readl(addr);
73 printk(KERN_DEBUG "IO:R %p %08x\n", addr, val);
83 static void load_gpu(struct drm_device *dev)
85 struct etnaviv_drm_private *priv = dev->dev_private;
88 for (i = 0; i < ETNA_MAX_PIPES; i++) {
89 struct etnaviv_gpu *g = priv->gpu[i];
94 ret = etnaviv_gpu_init(g);
101 static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
103 struct etnaviv_file_private *ctx;
105 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
109 file->driver_priv = ctx;
114 static void etnaviv_preclose(struct drm_device *dev, struct drm_file *file)
116 struct etnaviv_drm_private *priv = dev->dev_private;
117 struct etnaviv_file_private *ctx = file->driver_priv;
120 for (i = 0; i < ETNA_MAX_PIPES; i++) {
121 struct etnaviv_gpu *gpu = priv->gpu[i];
124 mutex_lock(&gpu->lock);
125 if (gpu->lastctx == ctx)
127 mutex_unlock(&gpu->lock);
138 #ifdef CONFIG_DEBUG_FS
139 static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
141 struct etnaviv_drm_private *priv = dev->dev_private;
143 etnaviv_gem_describe_objects(priv, m);
148 static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
152 read_lock(&dev->vma_offset_manager->vm_lock);
153 ret = drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
154 read_unlock(&dev->vma_offset_manager->vm_lock);
159 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
161 seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
163 mutex_lock(&gpu->mmu->lock);
164 drm_mm_dump_table(m, &gpu->mmu->mm);
165 mutex_unlock(&gpu->mmu->lock);
170 static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
172 struct etnaviv_cmdbuf *buf = gpu->buffer;
173 u32 size = buf->size;
174 u32 *ptr = buf->vaddr;
177 seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
178 buf->vaddr, (u64)buf->paddr, size - buf->user_size);
180 for (i = 0; i < size / 4; i++) {
184 seq_printf(m, "\t0x%p: ", ptr + i);
185 seq_printf(m, "%08x ", *(ptr + i));
190 static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
192 seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));
194 mutex_lock(&gpu->lock);
195 etnaviv_buffer_dump(gpu, m);
196 mutex_unlock(&gpu->lock);
201 static int show_unlocked(struct seq_file *m, void *arg)
203 struct drm_info_node *node = (struct drm_info_node *) m->private;
204 struct drm_device *dev = node->minor->dev;
205 int (*show)(struct drm_device *dev, struct seq_file *m) =
206 node->info_ent->data;
211 static int show_each_gpu(struct seq_file *m, void *arg)
213 struct drm_info_node *node = (struct drm_info_node *) m->private;
214 struct drm_device *dev = node->minor->dev;
215 struct etnaviv_drm_private *priv = dev->dev_private;
216 struct etnaviv_gpu *gpu;
217 int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
218 node->info_ent->data;
222 for (i = 0; i < ETNA_MAX_PIPES; i++) {
235 static struct drm_info_list etnaviv_debugfs_list[] = {
236 {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
237 {"gem", show_unlocked, 0, etnaviv_gem_show},
238 { "mm", show_unlocked, 0, etnaviv_mm_show },
239 {"mmu", show_each_gpu, 0, etnaviv_mmu_show},
240 {"ring", show_each_gpu, 0, etnaviv_ring_show},
243 static int etnaviv_debugfs_init(struct drm_minor *minor)
245 struct drm_device *dev = minor->dev;
248 ret = drm_debugfs_create_files(etnaviv_debugfs_list,
249 ARRAY_SIZE(etnaviv_debugfs_list),
250 minor->debugfs_root, minor);
253 dev_err(dev->dev, "could not install etnaviv_debugfs_list\n");
260 static void etnaviv_debugfs_cleanup(struct drm_minor *minor)
262 drm_debugfs_remove_files(etnaviv_debugfs_list,
263 ARRAY_SIZE(etnaviv_debugfs_list), minor);
271 static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
272 struct drm_file *file)
274 struct etnaviv_drm_private *priv = dev->dev_private;
275 struct drm_etnaviv_param *args = data;
276 struct etnaviv_gpu *gpu;
278 if (args->pipe >= ETNA_MAX_PIPES)
281 gpu = priv->gpu[args->pipe];
285 return etnaviv_gpu_get_param(gpu, args->param, &args->value);
288 static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
289 struct drm_file *file)
291 struct drm_etnaviv_gem_new *args = data;
293 if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
297 return etnaviv_gem_new_handle(dev, file, args->size,
298 args->flags, &args->handle);
301 #define TS(t) ((struct timespec){ \
302 .tv_sec = (t).tv_sec, \
303 .tv_nsec = (t).tv_nsec \
306 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
307 struct drm_file *file)
309 struct drm_etnaviv_gem_cpu_prep *args = data;
310 struct drm_gem_object *obj;
313 if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
316 obj = drm_gem_object_lookup(file, args->handle);
320 ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout));
322 drm_gem_object_unreference_unlocked(obj);
327 static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
328 struct drm_file *file)
330 struct drm_etnaviv_gem_cpu_fini *args = data;
331 struct drm_gem_object *obj;
337 obj = drm_gem_object_lookup(file, args->handle);
341 ret = etnaviv_gem_cpu_fini(obj);
343 drm_gem_object_unreference_unlocked(obj);
348 static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data,
349 struct drm_file *file)
351 struct drm_etnaviv_gem_info *args = data;
352 struct drm_gem_object *obj;
358 obj = drm_gem_object_lookup(file, args->handle);
362 ret = etnaviv_gem_mmap_offset(obj, &args->offset);
363 drm_gem_object_unreference_unlocked(obj);
368 static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
369 struct drm_file *file)
371 struct drm_etnaviv_wait_fence *args = data;
372 struct etnaviv_drm_private *priv = dev->dev_private;
373 struct timespec *timeout = &TS(args->timeout);
374 struct etnaviv_gpu *gpu;
376 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
379 if (args->pipe >= ETNA_MAX_PIPES)
382 gpu = priv->gpu[args->pipe];
386 if (args->flags & ETNA_WAIT_NONBLOCK)
389 return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
393 static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
394 struct drm_file *file)
396 struct drm_etnaviv_gem_userptr *args = data;
399 if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
403 if (offset_in_page(args->user_ptr | args->user_size) ||
404 (uintptr_t)args->user_ptr != args->user_ptr ||
405 (u32)args->user_size != args->user_size ||
406 args->user_ptr & ~PAGE_MASK)
409 if (args->flags & ETNA_USERPTR_WRITE)
410 access = VERIFY_WRITE;
412 access = VERIFY_READ;
414 if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr,
418 return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
419 args->user_size, args->flags,
423 static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
424 struct drm_file *file)
426 struct etnaviv_drm_private *priv = dev->dev_private;
427 struct drm_etnaviv_gem_wait *args = data;
428 struct timespec *timeout = &TS(args->timeout);
429 struct drm_gem_object *obj;
430 struct etnaviv_gpu *gpu;
433 if (args->flags & ~(ETNA_WAIT_NONBLOCK))
436 if (args->pipe >= ETNA_MAX_PIPES)
439 gpu = priv->gpu[args->pipe];
443 obj = drm_gem_object_lookup(file, args->handle);
447 if (args->flags & ETNA_WAIT_NONBLOCK)
450 ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
452 drm_gem_object_unreference_unlocked(obj);
457 static const struct drm_ioctl_desc etnaviv_ioctls[] = {
458 #define ETNA_IOCTL(n, func, flags) \
459 DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
460 ETNA_IOCTL(GET_PARAM, get_param, DRM_AUTH|DRM_RENDER_ALLOW),
461 ETNA_IOCTL(GEM_NEW, gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
462 ETNA_IOCTL(GEM_INFO, gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
463 ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
464 ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
465 ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
466 ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
467 ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_AUTH|DRM_RENDER_ALLOW),
468 ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_AUTH|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 |
493 .open = etnaviv_open,
494 .preclose = etnaviv_preclose,
495 .gem_free_object_unlocked = etnaviv_gem_free_object,
496 .gem_vm_ops = &vm_ops,
497 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
498 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
499 .gem_prime_export = drm_gem_prime_export,
500 .gem_prime_import = drm_gem_prime_import,
501 .gem_prime_pin = etnaviv_gem_prime_pin,
502 .gem_prime_unpin = etnaviv_gem_prime_unpin,
503 .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
504 .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
505 .gem_prime_vmap = etnaviv_gem_prime_vmap,
506 .gem_prime_vunmap = etnaviv_gem_prime_vunmap,
507 .gem_prime_mmap = etnaviv_gem_prime_mmap,
508 #ifdef CONFIG_DEBUG_FS
509 .debugfs_init = etnaviv_debugfs_init,
510 .debugfs_cleanup = etnaviv_debugfs_cleanup,
512 .ioctls = etnaviv_ioctls,
513 .num_ioctls = DRM_ETNAVIV_NUM_IOCTLS,
516 .desc = "etnaviv DRM",
525 static int etnaviv_bind(struct device *dev)
527 struct etnaviv_drm_private *priv;
528 struct drm_device *drm;
531 drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
535 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
537 dev_err(dev, "failed to allocate private data\n");
541 drm->dev_private = priv;
543 priv->wq = alloc_ordered_workqueue("etnaviv", 0);
549 mutex_init(&priv->gem_lock);
550 INIT_LIST_HEAD(&priv->gem_list);
553 dev_set_drvdata(dev, drm);
555 ret = component_bind_all(dev, drm);
561 ret = drm_dev_register(drm, 0);
568 component_unbind_all(dev, drm);
570 flush_workqueue(priv->wq);
571 destroy_workqueue(priv->wq);
580 static void etnaviv_unbind(struct device *dev)
582 struct drm_device *drm = dev_get_drvdata(dev);
583 struct etnaviv_drm_private *priv = drm->dev_private;
585 drm_dev_unregister(drm);
587 flush_workqueue(priv->wq);
588 destroy_workqueue(priv->wq);
590 component_unbind_all(dev, drm);
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 device_node *node = dev->of_node;
619 struct component_match *match = NULL;
621 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
624 struct device_node *core_node;
628 core_node = of_parse_phandle(node, "cores", i);
632 drm_of_component_match_add(&pdev->dev, &match,
633 compare_of, core_node);
634 of_node_put(core_node);
636 } else if (dev->platform_data) {
637 char **names = dev->platform_data;
640 for (i = 0; names[i]; i++)
641 component_match_add(dev, &match, compare_str, names[i]);
644 return component_master_add_with_match(dev, &etnaviv_master_ops, match);
647 static int etnaviv_pdev_remove(struct platform_device *pdev)
649 component_master_del(&pdev->dev, &etnaviv_master_ops);
654 static const struct of_device_id dt_match[] = {
655 { .compatible = "fsl,imx-gpu-subsystem" },
656 { .compatible = "marvell,dove-gpu-subsystem" },
659 MODULE_DEVICE_TABLE(of, dt_match);
661 static struct platform_driver etnaviv_platform_driver = {
662 .probe = etnaviv_pdev_probe,
663 .remove = etnaviv_pdev_remove,
666 .of_match_table = dt_match,
670 static int __init etnaviv_init(void)
674 etnaviv_validate_init();
676 ret = platform_driver_register(&etnaviv_gpu_driver);
680 ret = platform_driver_register(&etnaviv_platform_driver);
682 platform_driver_unregister(&etnaviv_gpu_driver);
686 module_init(etnaviv_init);
688 static void __exit etnaviv_exit(void)
690 platform_driver_unregister(&etnaviv_gpu_driver);
691 platform_driver_unregister(&etnaviv_platform_driver);
693 module_exit(etnaviv_exit);
695 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
696 MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
697 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
698 MODULE_DESCRIPTION("etnaviv DRM Driver");
699 MODULE_LICENSE("GPL v2");
700 MODULE_ALIAS("platform:etnaviv");