diff options
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_drv.c')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_drv.c | 706 |
1 files changed, 706 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c new file mode 100644 index 000000000..919e6cc04 --- /dev/null +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -0,0 +1,706 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */ +/* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */ +/* Copyright 2019 Collabora ltd. */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/pagemap.h> +#include <linux/pm_runtime.h> +#include <drm/panfrost_drm.h> +#include <drm/drm_drv.h> +#include <drm/drm_ioctl.h> +#include <drm/drm_syncobj.h> +#include <drm/drm_utils.h> + +#include "panfrost_device.h" +#include "panfrost_gem.h" +#include "panfrost_mmu.h" +#include "panfrost_job.h" +#include "panfrost_gpu.h" +#include "panfrost_perfcnt.h" + +static bool unstable_ioctls; +module_param_unsafe(unstable_ioctls, bool, 0600); + +static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file) +{ + struct drm_panfrost_get_param *param = data; + struct panfrost_device *pfdev = ddev->dev_private; + + if (param->pad != 0) + return -EINVAL; + +#define PANFROST_FEATURE(name, member) \ + case DRM_PANFROST_PARAM_ ## name: \ + param->value = pfdev->features.member; \ + break +#define PANFROST_FEATURE_ARRAY(name, member, max) \ + case DRM_PANFROST_PARAM_ ## name ## 0 ... \ + DRM_PANFROST_PARAM_ ## name ## max: \ + param->value = pfdev->features.member[param->param - \ + DRM_PANFROST_PARAM_ ## name ## 0]; \ + break + + switch (param->param) { + PANFROST_FEATURE(GPU_PROD_ID, id); + PANFROST_FEATURE(GPU_REVISION, revision); + PANFROST_FEATURE(SHADER_PRESENT, shader_present); + PANFROST_FEATURE(TILER_PRESENT, tiler_present); + PANFROST_FEATURE(L2_PRESENT, l2_present); + PANFROST_FEATURE(STACK_PRESENT, stack_present); + PANFROST_FEATURE(AS_PRESENT, as_present); + PANFROST_FEATURE(JS_PRESENT, js_present); + PANFROST_FEATURE(L2_FEATURES, l2_features); + PANFROST_FEATURE(CORE_FEATURES, core_features); + PANFROST_FEATURE(TILER_FEATURES, tiler_features); + PANFROST_FEATURE(MEM_FEATURES, mem_features); + PANFROST_FEATURE(MMU_FEATURES, mmu_features); + PANFROST_FEATURE(THREAD_FEATURES, thread_features); + PANFROST_FEATURE(MAX_THREADS, max_threads); + PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ, + thread_max_workgroup_sz); + PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ, + thread_max_barrier_sz); + PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features); + PANFROST_FEATURE(AFBC_FEATURES, afbc_features); + PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3); + PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15); + PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups); + PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc); + default: + return -EINVAL; + } + + return 0; +} + +static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct panfrost_file_priv *priv = file->driver_priv; + struct panfrost_gem_object *bo; + struct drm_panfrost_create_bo *args = data; + struct panfrost_gem_mapping *mapping; + int ret; + + if (!args->size || args->pad || + (args->flags & ~(PANFROST_BO_NOEXEC | PANFROST_BO_HEAP))) + return -EINVAL; + + /* Heaps should never be executable */ + if ((args->flags & PANFROST_BO_HEAP) && + !(args->flags & PANFROST_BO_NOEXEC)) + return -EINVAL; + + bo = panfrost_gem_create(dev, args->size, args->flags); + if (IS_ERR(bo)) + return PTR_ERR(bo); + + ret = drm_gem_handle_create(file, &bo->base.base, &args->handle); + if (ret) + goto out; + + mapping = panfrost_gem_mapping_get(bo, priv); + if (mapping) { + args->offset = mapping->mmnode.start << PAGE_SHIFT; + panfrost_gem_mapping_put(mapping); + } else { + /* This can only happen if the handle from + * drm_gem_handle_create() has already been guessed and freed + * by user space + */ + ret = -EINVAL; + } + +out: + drm_gem_object_put(&bo->base.base); + return ret; +} + +/** + * panfrost_lookup_bos() - Sets up job->bo[] with the GEM objects + * referenced by the job. + * @dev: DRM device + * @file_priv: DRM file for this fd + * @args: IOCTL args + * @job: job being set up + * + * Resolve handles from userspace to BOs and attach them to job. + * + * Note that this function doesn't need to unreference the BOs on + * failure, because that will happen at panfrost_job_cleanup() time. + */ +static int +panfrost_lookup_bos(struct drm_device *dev, + struct drm_file *file_priv, + struct drm_panfrost_submit *args, + struct panfrost_job *job) +{ + struct panfrost_file_priv *priv = file_priv->driver_priv; + struct panfrost_gem_object *bo; + unsigned int i; + int ret; + + job->bo_count = args->bo_handle_count; + + if (!job->bo_count) + return 0; + + ret = drm_gem_objects_lookup(file_priv, + (void __user *)(uintptr_t)args->bo_handles, + job->bo_count, &job->bos); + if (ret) + return ret; + + job->mappings = kvmalloc_array(job->bo_count, + sizeof(struct panfrost_gem_mapping *), + GFP_KERNEL | __GFP_ZERO); + if (!job->mappings) + return -ENOMEM; + + for (i = 0; i < job->bo_count; i++) { + struct panfrost_gem_mapping *mapping; + + bo = to_panfrost_bo(job->bos[i]); + mapping = panfrost_gem_mapping_get(bo, priv); + if (!mapping) { + ret = -EINVAL; + break; + } + + atomic_inc(&bo->gpu_usecount); + job->mappings[i] = mapping; + } + + return ret; +} + +/** + * panfrost_copy_in_sync() - Sets up job->deps with the sync objects + * referenced by the job. + * @dev: DRM device + * @file_priv: DRM file for this fd + * @args: IOCTL args + * @job: job being set up + * + * Resolve syncobjs from userspace to fences and attach them to job. + * + * Note that this function doesn't need to unreference the fences on + * failure, because that will happen at panfrost_job_cleanup() time. + */ +static int +panfrost_copy_in_sync(struct drm_device *dev, + struct drm_file *file_priv, + struct drm_panfrost_submit *args, + struct panfrost_job *job) +{ + u32 *handles; + int ret = 0; + int i, in_fence_count; + + in_fence_count = args->in_sync_count; + + if (!in_fence_count) + return 0; + + handles = kvmalloc_array(in_fence_count, sizeof(u32), GFP_KERNEL); + if (!handles) { + ret = -ENOMEM; + DRM_DEBUG("Failed to allocate incoming syncobj handles\n"); + goto fail; + } + + if (copy_from_user(handles, + (void __user *)(uintptr_t)args->in_syncs, + in_fence_count * sizeof(u32))) { + ret = -EFAULT; + DRM_DEBUG("Failed to copy in syncobj handles\n"); + goto fail; + } + + for (i = 0; i < in_fence_count; i++) { + struct dma_fence *fence; + + ret = drm_syncobj_find_fence(file_priv, handles[i], 0, 0, + &fence); + if (ret) + goto fail; + + ret = drm_sched_job_add_dependency(&job->base, fence); + + if (ret) + goto fail; + } + +fail: + kvfree(handles); + return ret; +} + +static int panfrost_ioctl_submit(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct panfrost_device *pfdev = dev->dev_private; + struct panfrost_file_priv *file_priv = file->driver_priv; + struct drm_panfrost_submit *args = data; + struct drm_syncobj *sync_out = NULL; + struct panfrost_job *job; + int ret = 0, slot; + + if (!args->jc) + return -EINVAL; + + if (args->requirements && args->requirements != PANFROST_JD_REQ_FS) + return -EINVAL; + + if (args->out_sync > 0) { + sync_out = drm_syncobj_find(file, args->out_sync); + if (!sync_out) + return -ENODEV; + } + + job = kzalloc(sizeof(*job), GFP_KERNEL); + if (!job) { + ret = -ENOMEM; + goto out_put_syncout; + } + + kref_init(&job->refcount); + + job->pfdev = pfdev; + job->jc = args->jc; + job->requirements = args->requirements; + job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev); + job->mmu = file_priv->mmu; + + slot = panfrost_job_get_slot(job); + + ret = drm_sched_job_init(&job->base, + &file_priv->sched_entity[slot], + NULL); + if (ret) + goto out_put_job; + + ret = panfrost_copy_in_sync(dev, file, args, job); + if (ret) + goto out_cleanup_job; + + ret = panfrost_lookup_bos(dev, file, args, job); + if (ret) + goto out_cleanup_job; + + ret = panfrost_job_push(job); + if (ret) + goto out_cleanup_job; + + /* Update the return sync object for the job */ + if (sync_out) + drm_syncobj_replace_fence(sync_out, job->render_done_fence); + +out_cleanup_job: + if (ret) + drm_sched_job_cleanup(&job->base); +out_put_job: + panfrost_job_put(job); +out_put_syncout: + if (sync_out) + drm_syncobj_put(sync_out); + + return ret; +} + +static int +panfrost_ioctl_wait_bo(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + long ret; + struct drm_panfrost_wait_bo *args = data; + struct drm_gem_object *gem_obj; + unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns); + + if (args->pad) + return -EINVAL; + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) + return -ENOENT; + + ret = dma_resv_wait_timeout(gem_obj->resv, DMA_RESV_USAGE_READ, + true, timeout); + if (!ret) + ret = timeout ? -ETIMEDOUT : -EBUSY; + + drm_gem_object_put(gem_obj); + + return ret; +} + +static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_panfrost_mmap_bo *args = data; + struct drm_gem_object *gem_obj; + int ret; + + if (args->flags != 0) { + DRM_INFO("unknown mmap_bo flags: %d\n", args->flags); + return -EINVAL; + } + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) { + DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); + return -ENOENT; + } + + /* Don't allow mmapping of heap objects as pages are not pinned. */ + if (to_panfrost_bo(gem_obj)->is_heap) { + ret = -EINVAL; + goto out; + } + + ret = drm_gem_create_mmap_offset(gem_obj); + if (ret == 0) + args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); + +out: + drm_gem_object_put(gem_obj); + return ret; +} + +static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct panfrost_file_priv *priv = file_priv->driver_priv; + struct drm_panfrost_get_bo_offset *args = data; + struct panfrost_gem_mapping *mapping; + struct drm_gem_object *gem_obj; + struct panfrost_gem_object *bo; + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) { + DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); + return -ENOENT; + } + bo = to_panfrost_bo(gem_obj); + + mapping = panfrost_gem_mapping_get(bo, priv); + drm_gem_object_put(gem_obj); + + if (!mapping) + return -EINVAL; + + args->offset = mapping->mmnode.start << PAGE_SHIFT; + panfrost_gem_mapping_put(mapping); + return 0; +} + +static int panfrost_ioctl_madvise(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct panfrost_file_priv *priv = file_priv->driver_priv; + struct drm_panfrost_madvise *args = data; + struct panfrost_device *pfdev = dev->dev_private; + struct drm_gem_object *gem_obj; + struct panfrost_gem_object *bo; + int ret = 0; + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) { + DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); + return -ENOENT; + } + + bo = to_panfrost_bo(gem_obj); + + mutex_lock(&pfdev->shrinker_lock); + mutex_lock(&bo->mappings.lock); + if (args->madv == PANFROST_MADV_DONTNEED) { + struct panfrost_gem_mapping *first; + + first = list_first_entry(&bo->mappings.list, + struct panfrost_gem_mapping, + node); + + /* + * If we want to mark the BO purgeable, there must be only one + * user: the caller FD. + * We could do something smarter and mark the BO purgeable only + * when all its users have marked it purgeable, but globally + * visible/shared BOs are likely to never be marked purgeable + * anyway, so let's not bother. + */ + if (!list_is_singular(&bo->mappings.list) || + WARN_ON_ONCE(first->mmu != priv->mmu)) { + ret = -EINVAL; + goto out_unlock_mappings; + } + } + + args->retained = drm_gem_shmem_madvise(&bo->base, args->madv); + + if (args->retained) { + if (args->madv == PANFROST_MADV_DONTNEED) + list_move_tail(&bo->base.madv_list, + &pfdev->shrinker_list); + else if (args->madv == PANFROST_MADV_WILLNEED) + list_del_init(&bo->base.madv_list); + } + +out_unlock_mappings: + mutex_unlock(&bo->mappings.lock); + mutex_unlock(&pfdev->shrinker_lock); + + drm_gem_object_put(gem_obj); + return ret; +} + +int panfrost_unstable_ioctl_check(void) +{ + if (!unstable_ioctls) + return -ENOSYS; + + return 0; +} + +static int +panfrost_open(struct drm_device *dev, struct drm_file *file) +{ + int ret; + struct panfrost_device *pfdev = dev->dev_private; + struct panfrost_file_priv *panfrost_priv; + + panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL); + if (!panfrost_priv) + return -ENOMEM; + + panfrost_priv->pfdev = pfdev; + file->driver_priv = panfrost_priv; + + panfrost_priv->mmu = panfrost_mmu_ctx_create(pfdev); + if (IS_ERR(panfrost_priv->mmu)) { + ret = PTR_ERR(panfrost_priv->mmu); + goto err_free; + } + + ret = panfrost_job_open(panfrost_priv); + if (ret) + goto err_job; + + return 0; + +err_job: + panfrost_mmu_ctx_put(panfrost_priv->mmu); +err_free: + kfree(panfrost_priv); + return ret; +} + +static void +panfrost_postclose(struct drm_device *dev, struct drm_file *file) +{ + struct panfrost_file_priv *panfrost_priv = file->driver_priv; + + panfrost_perfcnt_close(file); + panfrost_job_close(panfrost_priv); + + panfrost_mmu_ctx_put(panfrost_priv->mmu); + kfree(panfrost_priv); +} + +static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = { +#define PANFROST_IOCTL(n, func, flags) \ + DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags) + + PANFROST_IOCTL(SUBMIT, submit, DRM_RENDER_ALLOW), + PANFROST_IOCTL(WAIT_BO, wait_bo, DRM_RENDER_ALLOW), + PANFROST_IOCTL(CREATE_BO, create_bo, DRM_RENDER_ALLOW), + PANFROST_IOCTL(MMAP_BO, mmap_bo, DRM_RENDER_ALLOW), + PANFROST_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW), + PANFROST_IOCTL(GET_BO_OFFSET, get_bo_offset, DRM_RENDER_ALLOW), + PANFROST_IOCTL(PERFCNT_ENABLE, perfcnt_enable, DRM_RENDER_ALLOW), + PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW), + PANFROST_IOCTL(MADVISE, madvise, DRM_RENDER_ALLOW), +}; + +DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops); + +/* + * Panfrost driver version: + * - 1.0 - initial interface + * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO + * - 1.2 - adds AFBC_FEATURES query + */ +static const struct drm_driver panfrost_drm_driver = { + .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ, + .open = panfrost_open, + .postclose = panfrost_postclose, + .ioctls = panfrost_drm_driver_ioctls, + .num_ioctls = ARRAY_SIZE(panfrost_drm_driver_ioctls), + .fops = &panfrost_drm_driver_fops, + .name = "panfrost", + .desc = "panfrost DRM", + .date = "20180908", + .major = 1, + .minor = 2, + + .gem_create_object = panfrost_gem_create_object, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table, + .gem_prime_mmap = drm_gem_prime_mmap, +}; + +static int panfrost_probe(struct platform_device *pdev) +{ + struct panfrost_device *pfdev; + struct drm_device *ddev; + int err; + + pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL); + if (!pfdev) + return -ENOMEM; + + pfdev->pdev = pdev; + pfdev->dev = &pdev->dev; + + platform_set_drvdata(pdev, pfdev); + + pfdev->comp = of_device_get_match_data(&pdev->dev); + if (!pfdev->comp) + return -ENODEV; + + pfdev->coherent = device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT; + + /* Allocate and initialize the DRM device. */ + ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev); + if (IS_ERR(ddev)) + return PTR_ERR(ddev); + + ddev->dev_private = pfdev; + pfdev->ddev = ddev; + + mutex_init(&pfdev->shrinker_lock); + INIT_LIST_HEAD(&pfdev->shrinker_list); + + err = panfrost_device_init(pfdev); + if (err) { + if (err != -EPROBE_DEFER) + dev_err(&pdev->dev, "Fatal error during GPU init\n"); + goto err_out0; + } + + pm_runtime_set_active(pfdev->dev); + pm_runtime_mark_last_busy(pfdev->dev); + pm_runtime_enable(pfdev->dev); + pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */ + pm_runtime_use_autosuspend(pfdev->dev); + + /* + * Register the DRM device with the core and the connectors with + * sysfs + */ + err = drm_dev_register(ddev, 0); + if (err < 0) + goto err_out1; + + panfrost_gem_shrinker_init(ddev); + + return 0; + +err_out1: + pm_runtime_disable(pfdev->dev); + panfrost_device_fini(pfdev); + pm_runtime_set_suspended(pfdev->dev); +err_out0: + drm_dev_put(ddev); + return err; +} + +static int panfrost_remove(struct platform_device *pdev) +{ + struct panfrost_device *pfdev = platform_get_drvdata(pdev); + struct drm_device *ddev = pfdev->ddev; + + drm_dev_unregister(ddev); + panfrost_gem_shrinker_cleanup(ddev); + + pm_runtime_get_sync(pfdev->dev); + pm_runtime_disable(pfdev->dev); + panfrost_device_fini(pfdev); + pm_runtime_set_suspended(pfdev->dev); + + drm_dev_put(ddev); + return 0; +} + +/* + * The OPP core wants the supply names to be NULL terminated, but we need the + * correct num_supplies value for regulator core. Hence, we NULL terminate here + * and then initialize num_supplies with ARRAY_SIZE - 1. + */ +static const char * const default_supplies[] = { "mali", NULL }; +static const struct panfrost_compatible default_data = { + .num_supplies = ARRAY_SIZE(default_supplies) - 1, + .supply_names = default_supplies, + .num_pm_domains = 1, /* optional */ + .pm_domain_names = NULL, +}; + +static const struct panfrost_compatible amlogic_data = { + .num_supplies = ARRAY_SIZE(default_supplies) - 1, + .supply_names = default_supplies, + .vendor_quirk = panfrost_gpu_amlogic_quirk, +}; + +static const char * const mediatek_mt8183_supplies[] = { "mali", "sram", NULL }; +static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" }; +static const struct panfrost_compatible mediatek_mt8183_data = { + .num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies) - 1, + .supply_names = mediatek_mt8183_supplies, + .num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains), + .pm_domain_names = mediatek_mt8183_pm_domains, +}; + +static const struct of_device_id dt_match[] = { + /* Set first to probe before the generic compatibles */ + { .compatible = "amlogic,meson-gxm-mali", + .data = &amlogic_data, }, + { .compatible = "amlogic,meson-g12a-mali", + .data = &amlogic_data, }, + { .compatible = "arm,mali-t604", .data = &default_data, }, + { .compatible = "arm,mali-t624", .data = &default_data, }, + { .compatible = "arm,mali-t628", .data = &default_data, }, + { .compatible = "arm,mali-t720", .data = &default_data, }, + { .compatible = "arm,mali-t760", .data = &default_data, }, + { .compatible = "arm,mali-t820", .data = &default_data, }, + { .compatible = "arm,mali-t830", .data = &default_data, }, + { .compatible = "arm,mali-t860", .data = &default_data, }, + { .compatible = "arm,mali-t880", .data = &default_data, }, + { .compatible = "arm,mali-bifrost", .data = &default_data, }, + { .compatible = "arm,mali-valhall-jm", .data = &default_data, }, + { .compatible = "mediatek,mt8183-mali", .data = &mediatek_mt8183_data }, + {} +}; +MODULE_DEVICE_TABLE(of, dt_match); + +static const struct dev_pm_ops panfrost_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume, NULL) +}; + +static struct platform_driver panfrost_driver = { + .probe = panfrost_probe, + .remove = panfrost_remove, + .driver = { + .name = "panfrost", + .pm = &panfrost_pm_ops, + .of_match_table = dt_match, + }, +}; +module_platform_driver(panfrost_driver); + +MODULE_AUTHOR("Panfrost Project Developers"); +MODULE_DESCRIPTION("Panfrost DRM Driver"); +MODULE_LICENSE("GPL v2"); |