/* * Copyright (C) 2012 Avionic Design GmbH * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include "drm.h" #include "gem.h" #define DRIVER_NAME "tegra" #define DRIVER_DESC "NVIDIA Tegra graphics" #define DRIVER_DATE "20120330" #define DRIVER_MAJOR 0 #define DRIVER_MINOR 0 #define DRIVER_PATCHLEVEL 0 struct tegra_drm_file { struct list_head contexts; }; static int tegra_drm_load(struct drm_device *drm, unsigned long flags) { struct host1x_device *device = to_host1x_device(drm->dev); struct tegra_drm *tegra; int err; tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); if (!tegra) return -ENOMEM; dev_set_drvdata(drm->dev, tegra); mutex_init(&tegra->clients_lock); INIT_LIST_HEAD(&tegra->clients); drm->dev_private = tegra; tegra->drm = drm; drm_mode_config_init(drm); err = host1x_device_init(device); if (err < 0) return err; /* * We don't use the drm_irq_install() helpers provided by the DRM * core, so we need to set this manually in order to allow the * DRM_IOCTL_WAIT_VBLANK to operate correctly. */ drm->irq_enabled = true; err = drm_vblank_init(drm, drm->mode_config.num_crtc); if (err < 0) return err; err = tegra_drm_fb_init(drm); if (err < 0) return err; drm_kms_helper_poll_init(drm); return 0; } static int tegra_drm_unload(struct drm_device *drm) { struct host1x_device *device = to_host1x_device(drm->dev); int err; drm_kms_helper_poll_fini(drm); tegra_drm_fb_exit(drm); drm_vblank_cleanup(drm); drm_mode_config_cleanup(drm); err = host1x_device_exit(device); if (err < 0) return err; return 0; } static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) { struct tegra_drm_file *fpriv; fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); if (!fpriv) return -ENOMEM; INIT_LIST_HEAD(&fpriv->contexts); filp->driver_priv = fpriv; return 0; } static void tegra_drm_context_free(struct tegra_drm_context *context) { context->client->ops->close_channel(context); kfree(context); } static void tegra_drm_lastclose(struct drm_device *drm) { struct tegra_drm *tegra = drm->dev_private; tegra_fbdev_restore_mode(tegra->fbdev); } static struct host1x_bo * host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle) { struct drm_gem_object *gem; struct tegra_bo *bo; gem = drm_gem_object_lookup(drm, file, handle); if (!gem) return NULL; mutex_lock(&drm->struct_mutex); drm_gem_object_unreference(gem); mutex_unlock(&drm->struct_mutex); bo = to_tegra_bo(gem); return &bo->base; } int tegra_drm_submit(struct tegra_drm_context *context, struct drm_tegra_submit *args, struct drm_device *drm, struct drm_file *file) { unsigned int num_cmdbufs = args->num_cmdbufs; unsigned int num_relocs = args->num_relocs; unsigned int num_waitchks = args->num_waitchks; struct drm_tegra_cmdbuf __user *cmdbufs = (void * __user)(uintptr_t)args->cmdbufs; struct drm_tegra_reloc __user *relocs = (void * __user)(uintptr_t)args->relocs; struct drm_tegra_waitchk __user *waitchks = (void * __user)(uintptr_t)args->waitchks; struct drm_tegra_syncpt syncpt; struct host1x_job *job; int err; /* We don't yet support other than one syncpt_incr struct per submit */ if (args->num_syncpts != 1) return -EINVAL; job = host1x_job_alloc(context->channel, args->num_cmdbufs, args->num_relocs, args->num_waitchks); if (!job) return -ENOMEM; job->num_relocs = args->num_relocs; job->num_waitchk = args->num_waitchks; job->client = (u32)args->context; job->class = context->client->base.class; job->serialize = true; while (num_cmdbufs) { struct drm_tegra_cmdbuf cmdbuf; struct host1x_bo *bo; err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf)); if (err) goto fail; bo = host1x_bo_lookup(drm, file, cmdbuf.handle); if (!bo) { err = -ENOENT; goto fail; } host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); num_cmdbufs--; cmdbufs++; } err = copy_from_user(job->relocarray, relocs, sizeof(*relocs) * num_relocs); if (err) goto fail; while (num_relocs--) { struct host1x_reloc *reloc = &job->relocarray[num_relocs]; struct host1x_bo *cmdbuf, *target; cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf); target = host1x_bo_lookup(drm, file, (u32)reloc->target); reloc->cmdbuf = cmdbuf; reloc->target = target; if (!reloc->target || !reloc->cmdbuf) { err = -ENOENT; goto fail; } } err = copy_from_user(job->waitchk, waitchks, sizeof(*waitchks) * num_waitchks); if (err) goto fail; err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts, sizeof(syncpt)); if (err) goto fail; job->is_addr_reg = context->client->ops->is_addr_reg; job->syncpt_incrs = syncpt.incrs; job->syncpt_id = syncpt.id; job->timeout = 10000; if (args->timeout && args->timeout < 10000) job->timeout = args->timeout; err = host1x_job_pin(job, context->client->base.dev); if (err) goto fail; err = host1x_job_submit(job); if (err) goto fail_submit; args->fence = job->syncpt_end; host1x_job_put(job); return 0; fail_submit: host1x_job_unpin(job); fail: host1x_job_put(job); return err; } #ifdef CONFIG_DRM_TEGRA_STAGING static struct tegra_drm_context *tegra_drm_get_context(__u64 context) { return (struct tegra_drm_context *)(uintptr_t)context; } static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, struct tegra_drm_context *context) { struct tegra_drm_context *ctx; list_for_each_entry(ctx, &file->contexts, list) if (ctx == context) return true; return false; } static int tegra_gem_create(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_create *args = data; struct tegra_bo *bo; bo = tegra_bo_create_with_handle(file, drm, args->size, &args->handle); if (IS_ERR(bo)) return PTR_ERR(bo); return 0; } static int tegra_gem_mmap(struct drm_device *drm, void *data, struct drm_file *file) { struct drm_tegra_gem_mmap *args = data; struct drm_gem_object *gem; struct tegra_bo *bo; gem = drm_gem_object_lookup(drm, file, args->handle); if (!gem) return -EINVAL; bo = to_tegra_bo(gem); args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node); drm_gem_object_unreference(gem); return 0; } static int tegra_syncpt_read(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_read *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host, args->id); if (!sp) return -EINVAL; args->value = host1x_syncpt_read_min(sp); return 0; } static int tegra_syncpt_incr(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host1x = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_incr *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host1x, args->id); if (!sp) return -EINVAL; return host1x_syncpt_incr(sp); } static int tegra_syncpt_wait(struct drm_device *drm, void *data, struct drm_file *file) { struct host1x *host1x = dev_get_drvdata(drm->dev->parent); struct drm_tegra_syncpt_wait *args = data; struct host1x_syncpt *sp; sp = host1x_syncpt_get(host1x, args->id); if (!sp) return -EINVAL; return host1x_syncpt_wait(sp, args->thresh, args->timeout, &args->value); } static int tegra_open_channel(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct tegra_drm *tegra = drm->dev_private; struct drm_tegra_open_channel *args = data; struct tegra_drm_context *context; struct tegra_drm_client *client; int err = -ENODEV; context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) return -ENOMEM; list_for_each_entry(client, &tegra->clients, list) if (client->base.class == args->client) { err = client->ops->open_channel(client, context); if (err) break; list_add(&context->list, &fpriv->contexts); args->context = (uintptr_t)context; context->client = client; return 0; } kfree(context); return err; } static int tegra_close_channel(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_close_channel *args = data; struct tegra_drm_context *context; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -EINVAL; list_del(&context->list); tegra_drm_context_free(context); return 0; } static int tegra_get_syncpt(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_get_syncpt *args = data; struct tegra_drm_context *context; struct host1x_syncpt *syncpt; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -ENODEV; if (args->index >= context->client->base.num_syncpts) return -EINVAL; syncpt = context->client->base.syncpts[args->index]; args->id = host1x_syncpt_id(syncpt); return 0; } static int tegra_submit(struct drm_device *drm, void *data, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_submit *args = data; struct tegra_drm_context *context; context = tegra_drm_get_context(args->context); if (!tegra_drm_file_owns_context(fpriv, context)) return -ENODEV; return context->client->ops->submit(context, args, drm, file); } #endif static const struct drm_ioctl_desc tegra_drm_ioctls[] = { #ifdef CONFIG_DRM_TEGRA_STAGING DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED), #endif }; static const struct file_operations tegra_drm_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, .mmap = tegra_drm_mmap, .poll = drm_poll, .read = drm_read, #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .llseek = noop_llseek, }; static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe) { struct drm_crtc *crtc; list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) { struct tegra_dc *dc = to_tegra_dc(crtc); if (dc->pipe == pipe) return crtc; } return NULL; } static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc) { /* TODO: implement real hardware counter using syncpoints */ return drm_vblank_count(dev, crtc); } static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe) { struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); struct tegra_dc *dc = to_tegra_dc(crtc); if (!crtc) return -ENODEV; tegra_dc_enable_vblank(dc); return 0; } static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe) { struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); struct tegra_dc *dc = to_tegra_dc(crtc); if (crtc) tegra_dc_disable_vblank(dc); } static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; struct tegra_drm_context *context, *tmp; struct drm_crtc *crtc; list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) tegra_dc_cancel_page_flip(crtc, file); list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) tegra_drm_context_free(context); kfree(fpriv); } #ifdef CONFIG_DEBUG_FS static int tegra_debugfs_framebuffers(struct seq_file *s, void *data) { struct drm_info_node *node = (struct drm_info_node *)s->private; struct drm_device *drm = node->minor->dev; struct drm_framebuffer *fb; mutex_lock(&drm->mode_config.fb_lock); list_for_each_entry(fb, &drm->mode_config.fb_list, head) { seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n", fb->base.id, fb->width, fb->height, fb->depth, fb->bits_per_pixel, atomic_read(&fb->refcount.refcount)); } mutex_unlock(&drm->mode_config.fb_lock); return 0; } static struct drm_info_list tegra_debugfs_list[] = { { "framebuffers", tegra_debugfs_framebuffers, 0 }, }; static int tegra_debugfs_init(struct drm_minor *minor) { return drm_debugfs_create_files(tegra_debugfs_list, ARRAY_SIZE(tegra_debugfs_list), minor->debugfs_root, minor); } static void tegra_debugfs_cleanup(struct drm_minor *minor) { drm_debugfs_remove_files(tegra_debugfs_list, ARRAY_SIZE(tegra_debugfs_list), minor); } #endif struct drm_driver tegra_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM, .load = tegra_drm_load, .unload = tegra_drm_unload, .open = tegra_drm_open, .preclose = tegra_drm_preclose, .lastclose = tegra_drm_lastclose, .get_vblank_counter = tegra_drm_get_vblank_counter, .enable_vblank = tegra_drm_enable_vblank, .disable_vblank = tegra_drm_disable_vblank, #if defined(CONFIG_DEBUG_FS) .debugfs_init = tegra_debugfs_init, .debugfs_cleanup = tegra_debugfs_cleanup, #endif .gem_free_object = tegra_bo_free_object, .gem_vm_ops = &tegra_bo_vm_ops, .dumb_create = tegra_bo_dumb_create, .dumb_map_offset = tegra_bo_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, .ioctls = tegra_drm_ioctls, .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls), .fops = &tegra_drm_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, }; int tegra_drm_register_client(struct tegra_drm *tegra, struct tegra_drm_client *client) { mutex_lock(&tegra->clients_lock); list_add_tail(&client->list, &tegra->clients); mutex_unlock(&tegra->clients_lock); return 0; } int tegra_drm_unregister_client(struct tegra_drm *tegra, struct tegra_drm_client *client) { mutex_lock(&tegra->clients_lock); list_del_init(&client->list); mutex_unlock(&tegra->clients_lock); return 0; } static int host1x_drm_probe(struct host1x_device *device) { return drm_host1x_init(&tegra_drm_driver, device); } static int host1x_drm_remove(struct host1x_device *device) { drm_host1x_exit(&tegra_drm_driver, device); return 0; } static const struct of_device_id host1x_drm_subdevs[] = { { .compatible = "nvidia,tegra20-dc", }, { .compatible = "nvidia,tegra20-hdmi", }, { .compatible = "nvidia,tegra20-gr2d", }, { .compatible = "nvidia,tegra30-dc", }, { .compatible = "nvidia,tegra30-hdmi", }, { .compatible = "nvidia,tegra30-gr2d", }, { .compatible = "nvidia,tegra114-hdmi", }, { /* sentinel */ } }; static struct host1x_driver host1x_drm_driver = { .name = "drm", .probe = host1x_drm_probe, .remove = host1x_drm_remove, .subdevs = host1x_drm_subdevs, }; static int __init host1x_drm_init(void) { int err; err = host1x_driver_register(&host1x_drm_driver); if (err < 0) return err; err = platform_driver_register(&tegra_dc_driver); if (err < 0) goto unregister_host1x; err = platform_driver_register(&tegra_hdmi_driver); if (err < 0) goto unregister_dc; err = platform_driver_register(&tegra_gr2d_driver); if (err < 0) goto unregister_hdmi; return 0; unregister_hdmi: platform_driver_unregister(&tegra_hdmi_driver); unregister_dc: platform_driver_unregister(&tegra_dc_driver); unregister_host1x: host1x_driver_unregister(&host1x_drm_driver); return err; } module_init(host1x_drm_init); static void __exit host1x_drm_exit(void) { platform_driver_unregister(&tegra_gr2d_driver); platform_driver_unregister(&tegra_hdmi_driver); platform_driver_unregister(&tegra_dc_driver); host1x_driver_unregister(&host1x_drm_driver); } module_exit(host1x_drm_exit); MODULE_AUTHOR("Thierry Reding "); MODULE_DESCRIPTION("NVIDIA Tegra DRM driver"); MODULE_LICENSE("GPL v2");