// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2015-2018 Etnaviv Project */ #include #include #include #include "etnaviv_cmdbuf.h" #include "etnaviv_drv.h" #include "etnaviv_gpu.h" #include "etnaviv_gem.h" #include "etnaviv_mmu.h" #include "etnaviv_perfmon.h" /* * DRM operations: */ static void load_gpu(struct drm_device *dev) { struct etnaviv_drm_private *priv = dev->dev_private; unsigned int i; for (i = 0; i < ETNA_MAX_PIPES; i++) { struct etnaviv_gpu *g = priv->gpu[i]; if (g) { int ret; ret = etnaviv_gpu_init(g); if (ret) priv->gpu[i] = NULL; } } } static int etnaviv_open(struct drm_device *dev, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct etnaviv_file_private *ctx; int i; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; for (i = 0; i < ETNA_MAX_PIPES; i++) { struct etnaviv_gpu *gpu = priv->gpu[i]; struct drm_sched_rq *rq; if (gpu) { rq = &gpu->sched.sched_rq[DRM_SCHED_PRIORITY_NORMAL]; drm_sched_entity_init(&ctx->sched_entity[i], &rq, 1, NULL); } } file->driver_priv = ctx; return 0; } static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct etnaviv_file_private *ctx = file->driver_priv; unsigned int i; for (i = 0; i < ETNA_MAX_PIPES; i++) { struct etnaviv_gpu *gpu = priv->gpu[i]; if (gpu) { mutex_lock(&gpu->lock); if (gpu->lastctx == ctx) gpu->lastctx = NULL; mutex_unlock(&gpu->lock); drm_sched_entity_destroy(&ctx->sched_entity[i]); } } kfree(ctx); } /* * DRM debugfs: */ #ifdef CONFIG_DEBUG_FS static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m) { struct etnaviv_drm_private *priv = dev->dev_private; etnaviv_gem_describe_objects(priv, m); return 0; } static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m) { struct drm_printer p = drm_seq_file_printer(m); read_lock(&dev->vma_offset_manager->vm_lock); drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); read_unlock(&dev->vma_offset_manager->vm_lock); return 0; } static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m) { struct drm_printer p = drm_seq_file_printer(m); seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev)); mutex_lock(&gpu->mmu->lock); drm_mm_print(&gpu->mmu->mm, &p); mutex_unlock(&gpu->mmu->lock); return 0; } static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m) { struct etnaviv_cmdbuf *buf = &gpu->buffer; u32 size = buf->size; u32 *ptr = buf->vaddr; u32 i; seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n", buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf), size - buf->user_size); for (i = 0; i < size / 4; i++) { if (i && !(i % 4)) seq_puts(m, "\n"); if (i % 4 == 0) seq_printf(m, "\t0x%p: ", ptr + i); seq_printf(m, "%08x ", *(ptr + i)); } seq_puts(m, "\n"); } static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m) { seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev)); mutex_lock(&gpu->lock); etnaviv_buffer_dump(gpu, m); mutex_unlock(&gpu->lock); return 0; } static int show_unlocked(struct seq_file *m, void *arg) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; int (*show)(struct drm_device *dev, struct seq_file *m) = node->info_ent->data; return show(dev, m); } static int show_each_gpu(struct seq_file *m, void *arg) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; struct etnaviv_drm_private *priv = dev->dev_private; struct etnaviv_gpu *gpu; int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) = node->info_ent->data; unsigned int i; int ret = 0; for (i = 0; i < ETNA_MAX_PIPES; i++) { gpu = priv->gpu[i]; if (!gpu) continue; ret = show(gpu, m); if (ret < 0) break; } return ret; } static struct drm_info_list etnaviv_debugfs_list[] = { {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs}, {"gem", show_unlocked, 0, etnaviv_gem_show}, { "mm", show_unlocked, 0, etnaviv_mm_show }, {"mmu", show_each_gpu, 0, etnaviv_mmu_show}, {"ring", show_each_gpu, 0, etnaviv_ring_show}, }; static int etnaviv_debugfs_init(struct drm_minor *minor) { struct drm_device *dev = minor->dev; int ret; ret = drm_debugfs_create_files(etnaviv_debugfs_list, ARRAY_SIZE(etnaviv_debugfs_list), minor->debugfs_root, minor); if (ret) { dev_err(dev->dev, "could not install etnaviv_debugfs_list\n"); return ret; } return ret; } #endif /* * DRM ioctls: */ static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct drm_etnaviv_param *args = data; struct etnaviv_gpu *gpu; if (args->pipe >= ETNA_MAX_PIPES) return -EINVAL; gpu = priv->gpu[args->pipe]; if (!gpu) return -ENXIO; return etnaviv_gpu_get_param(gpu, args->param, &args->value); } static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_gem_new *args = data; if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED | ETNA_BO_FORCE_MMU)) return -EINVAL; return etnaviv_gem_new_handle(dev, file, args->size, args->flags, &args->handle); } #define TS(t) ((struct timespec){ \ .tv_sec = (t).tv_sec, \ .tv_nsec = (t).tv_nsec \ }) static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_gem_cpu_prep *args = data; struct drm_gem_object *obj; int ret; if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC)) return -EINVAL; obj = drm_gem_object_lookup(file, args->handle); if (!obj) return -ENOENT; ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout)); drm_gem_object_put_unlocked(obj); return ret; } static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_gem_cpu_fini *args = data; struct drm_gem_object *obj; int ret; if (args->flags) return -EINVAL; obj = drm_gem_object_lookup(file, args->handle); if (!obj) return -ENOENT; ret = etnaviv_gem_cpu_fini(obj); drm_gem_object_put_unlocked(obj); return ret; } static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_gem_info *args = data; struct drm_gem_object *obj; int ret; if (args->pad) return -EINVAL; obj = drm_gem_object_lookup(file, args->handle); if (!obj) return -ENOENT; ret = etnaviv_gem_mmap_offset(obj, &args->offset); drm_gem_object_put_unlocked(obj); return ret; } static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_wait_fence *args = data; struct etnaviv_drm_private *priv = dev->dev_private; struct timespec *timeout = &TS(args->timeout); struct etnaviv_gpu *gpu; if (args->flags & ~(ETNA_WAIT_NONBLOCK)) return -EINVAL; if (args->pipe >= ETNA_MAX_PIPES) return -EINVAL; gpu = priv->gpu[args->pipe]; if (!gpu) return -ENXIO; if (args->flags & ETNA_WAIT_NONBLOCK) timeout = NULL; return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence, timeout); } static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_etnaviv_gem_userptr *args = data; int access; if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) || args->flags == 0) return -EINVAL; if (offset_in_page(args->user_ptr | args->user_size) || (uintptr_t)args->user_ptr != args->user_ptr || (u32)args->user_size != args->user_size || args->user_ptr & ~PAGE_MASK) return -EINVAL; if (args->flags & ETNA_USERPTR_WRITE) access = VERIFY_WRITE; else access = VERIFY_READ; if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr, args->user_size)) return -EFAULT; return etnaviv_gem_new_userptr(dev, file, args->user_ptr, args->user_size, args->flags, &args->handle); } static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct drm_etnaviv_gem_wait *args = data; struct timespec *timeout = &TS(args->timeout); struct drm_gem_object *obj; struct etnaviv_gpu *gpu; int ret; if (args->flags & ~(ETNA_WAIT_NONBLOCK)) return -EINVAL; if (args->pipe >= ETNA_MAX_PIPES) return -EINVAL; gpu = priv->gpu[args->pipe]; if (!gpu) return -ENXIO; obj = drm_gem_object_lookup(file, args->handle); if (!obj) return -ENOENT; if (args->flags & ETNA_WAIT_NONBLOCK) timeout = NULL; ret = etnaviv_gem_wait_bo(gpu, obj, timeout); drm_gem_object_put_unlocked(obj); return ret; } static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct drm_etnaviv_pm_domain *args = data; struct etnaviv_gpu *gpu; if (args->pipe >= ETNA_MAX_PIPES) return -EINVAL; gpu = priv->gpu[args->pipe]; if (!gpu) return -ENXIO; return etnaviv_pm_query_dom(gpu, args); } static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data, struct drm_file *file) { struct etnaviv_drm_private *priv = dev->dev_private; struct drm_etnaviv_pm_signal *args = data; struct etnaviv_gpu *gpu; if (args->pipe >= ETNA_MAX_PIPES) return -EINVAL; gpu = priv->gpu[args->pipe]; if (!gpu) return -ENXIO; return etnaviv_pm_query_sig(gpu, args); } static const struct drm_ioctl_desc etnaviv_ioctls[] = { #define ETNA_IOCTL(n, func, flags) \ DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags) ETNA_IOCTL(GET_PARAM, get_param, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_NEW, gem_new, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_INFO, gem_info, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_AUTH|DRM_RENDER_ALLOW), ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_AUTH|DRM_RENDER_ALLOW), }; static const struct vm_operations_struct vm_ops = { .fault = etnaviv_gem_fault, .open = drm_gem_vm_open, .close = drm_gem_vm_close, }; static const struct file_operations fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, .compat_ioctl = drm_compat_ioctl, .poll = drm_poll, .read = drm_read, .llseek = no_llseek, .mmap = etnaviv_gem_mmap, }; static struct drm_driver etnaviv_drm_driver = { .driver_features = DRIVER_GEM | DRIVER_PRIME | DRIVER_RENDER, .open = etnaviv_open, .postclose = etnaviv_postclose, .gem_free_object_unlocked = etnaviv_gem_free_object, .gem_vm_ops = &vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = drm_gem_prime_export, .gem_prime_import = drm_gem_prime_import, .gem_prime_res_obj = etnaviv_gem_prime_res_obj, .gem_prime_pin = etnaviv_gem_prime_pin, .gem_prime_unpin = etnaviv_gem_prime_unpin, .gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table, .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table, .gem_prime_vmap = etnaviv_gem_prime_vmap, .gem_prime_vunmap = etnaviv_gem_prime_vunmap, .gem_prime_mmap = etnaviv_gem_prime_mmap, #ifdef CONFIG_DEBUG_FS .debugfs_init = etnaviv_debugfs_init, #endif .ioctls = etnaviv_ioctls, .num_ioctls = DRM_ETNAVIV_NUM_IOCTLS, .fops = &fops, .name = "etnaviv", .desc = "etnaviv DRM", .date = "20151214", .major = 1, .minor = 2, }; /* * Platform driver: */ static int etnaviv_bind(struct device *dev) { struct etnaviv_drm_private *priv; struct drm_device *drm; int ret; drm = drm_dev_alloc(&etnaviv_drm_driver, dev); if (IS_ERR(drm)) return PTR_ERR(drm); priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) { dev_err(dev, "failed to allocate private data\n"); ret = -ENOMEM; goto out_unref; } drm->dev_private = priv; mutex_init(&priv->gem_lock); INIT_LIST_HEAD(&priv->gem_list); priv->num_gpus = 0; dev_set_drvdata(dev, drm); ret = component_bind_all(dev, drm); if (ret < 0) goto out_bind; load_gpu(drm); ret = drm_dev_register(drm, 0); if (ret) goto out_register; return 0; out_register: component_unbind_all(dev, drm); out_bind: kfree(priv); out_unref: drm_dev_put(drm); return ret; } static void etnaviv_unbind(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); struct etnaviv_drm_private *priv = drm->dev_private; drm_dev_unregister(drm); component_unbind_all(dev, drm); drm->dev_private = NULL; kfree(priv); drm_dev_put(drm); } static const struct component_master_ops etnaviv_master_ops = { .bind = etnaviv_bind, .unbind = etnaviv_unbind, }; static int compare_of(struct device *dev, void *data) { struct device_node *np = data; return dev->of_node == np; } static int compare_str(struct device *dev, void *data) { return !strcmp(dev_name(dev), data); } static int etnaviv_pdev_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct component_match *match = NULL; if (!dev->platform_data) { struct device_node *core_node; for_each_compatible_node(core_node, NULL, "vivante,gc") { if (!of_device_is_available(core_node)) continue; drm_of_component_match_add(&pdev->dev, &match, compare_of, core_node); } } else { char **names = dev->platform_data; unsigned i; for (i = 0; names[i]; i++) component_match_add(dev, &match, compare_str, names[i]); } return component_master_add_with_match(dev, &etnaviv_master_ops, match); } static int etnaviv_pdev_remove(struct platform_device *pdev) { component_master_del(&pdev->dev, &etnaviv_master_ops); return 0; } static struct platform_driver etnaviv_platform_driver = { .probe = etnaviv_pdev_probe, .remove = etnaviv_pdev_remove, .driver = { .name = "etnaviv", }, }; static struct platform_device *etnaviv_drm; static int __init etnaviv_init(void) { struct platform_device *pdev; int ret; struct device_node *np; etnaviv_validate_init(); ret = platform_driver_register(&etnaviv_gpu_driver); if (ret != 0) return ret; ret = platform_driver_register(&etnaviv_platform_driver); if (ret != 0) goto unregister_gpu_driver; /* * If the DT contains at least one available GPU device, instantiate * the DRM platform device. */ for_each_compatible_node(np, NULL, "vivante,gc") { if (!of_device_is_available(np)) continue; pdev = platform_device_alloc("etnaviv", -1); if (!pdev) { ret = -ENOMEM; of_node_put(np); goto unregister_platform_driver; } pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40); pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; /* * Apply the same DMA configuration to the virtual etnaviv * device as the GPU we found. This assumes that all Vivante * GPUs in the system share the same DMA constraints. */ of_dma_configure(&pdev->dev, np, true); ret = platform_device_add(pdev); if (ret) { platform_device_put(pdev); of_node_put(np); goto unregister_platform_driver; } etnaviv_drm = pdev; of_node_put(np); break; } return 0; unregister_platform_driver: platform_driver_unregister(&etnaviv_platform_driver); unregister_gpu_driver: platform_driver_unregister(&etnaviv_gpu_driver); return ret; } module_init(etnaviv_init); static void __exit etnaviv_exit(void) { platform_device_unregister(etnaviv_drm); platform_driver_unregister(&etnaviv_platform_driver); platform_driver_unregister(&etnaviv_gpu_driver); } module_exit(etnaviv_exit); MODULE_AUTHOR("Christian Gmeiner "); MODULE_AUTHOR("Russell King "); MODULE_AUTHOR("Lucas Stach "); MODULE_DESCRIPTION("etnaviv DRM Driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:etnaviv");