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path: root/drivers/gpu/drm/lima/lima_drv.c
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Diffstat (limited to 'drivers/gpu/drm/lima/lima_drv.c')
-rw-r--r--drivers/gpu/drm/lima/lima_drv.c491
1 files changed, 491 insertions, 0 deletions
diff --git a/drivers/gpu/drm/lima/lima_drv.c b/drivers/gpu/drm/lima/lima_drv.c
new file mode 100644
index 000000000..39cab4a55
--- /dev/null
+++ b/drivers/gpu/drm/lima/lima_drv.c
@@ -0,0 +1,491 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/pm_runtime.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_prime.h>
+#include <drm/lima_drm.h>
+
+#include "lima_device.h"
+#include "lima_drv.h"
+#include "lima_gem.h"
+#include "lima_vm.h"
+
+int lima_sched_timeout_ms;
+uint lima_heap_init_nr_pages = 8;
+uint lima_max_error_tasks;
+uint lima_job_hang_limit;
+
+MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
+module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444);
+
+MODULE_PARM_DESC(heap_init_nr_pages, "heap buffer init number of pages");
+module_param_named(heap_init_nr_pages, lima_heap_init_nr_pages, uint, 0444);
+
+MODULE_PARM_DESC(max_error_tasks, "max number of error tasks to save");
+module_param_named(max_error_tasks, lima_max_error_tasks, uint, 0644);
+
+MODULE_PARM_DESC(job_hang_limit, "number of times to allow a job to hang before dropping it (default 0)");
+module_param_named(job_hang_limit, lima_job_hang_limit, uint, 0444);
+
+static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_get_param *args = data;
+ struct lima_device *ldev = to_lima_dev(dev);
+
+ if (args->pad)
+ return -EINVAL;
+
+ switch (args->param) {
+ case DRM_LIMA_PARAM_GPU_ID:
+ switch (ldev->id) {
+ case lima_gpu_mali400:
+ args->value = DRM_LIMA_PARAM_GPU_ID_MALI400;
+ break;
+ case lima_gpu_mali450:
+ args->value = DRM_LIMA_PARAM_GPU_ID_MALI450;
+ break;
+ default:
+ args->value = DRM_LIMA_PARAM_GPU_ID_UNKNOWN;
+ break;
+ }
+ break;
+
+ case DRM_LIMA_PARAM_NUM_PP:
+ args->value = ldev->pipe[lima_pipe_pp].num_processor;
+ break;
+
+ case DRM_LIMA_PARAM_GP_VERSION:
+ args->value = ldev->gp_version;
+ break;
+
+ case DRM_LIMA_PARAM_PP_VERSION:
+ args->value = ldev->pp_version;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int lima_ioctl_gem_create(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_gem_create *args = data;
+
+ if (args->pad)
+ return -EINVAL;
+
+ if (args->flags & ~(LIMA_BO_FLAG_HEAP))
+ return -EINVAL;
+
+ if (args->size == 0)
+ return -EINVAL;
+
+ return lima_gem_create_handle(dev, file, args->size, args->flags, &args->handle);
+}
+
+static int lima_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_gem_info *args = data;
+
+ return lima_gem_get_info(file, args->handle, &args->va, &args->offset);
+}
+
+static int lima_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_gem_submit *args = data;
+ struct lima_device *ldev = to_lima_dev(dev);
+ struct lima_drm_priv *priv = file->driver_priv;
+ struct drm_lima_gem_submit_bo *bos;
+ struct lima_sched_pipe *pipe;
+ struct lima_sched_task *task;
+ struct lima_ctx *ctx;
+ struct lima_submit submit = {0};
+ size_t size;
+ int err = 0;
+
+ if (args->pipe >= lima_pipe_num || args->nr_bos == 0)
+ return -EINVAL;
+
+ if (args->flags & ~(LIMA_SUBMIT_FLAG_EXPLICIT_FENCE))
+ return -EINVAL;
+
+ pipe = ldev->pipe + args->pipe;
+ if (args->frame_size != pipe->frame_size)
+ return -EINVAL;
+
+ bos = kvcalloc(args->nr_bos, sizeof(*submit.bos) + sizeof(*submit.lbos), GFP_KERNEL);
+ if (!bos)
+ return -ENOMEM;
+
+ size = args->nr_bos * sizeof(*submit.bos);
+ if (copy_from_user(bos, u64_to_user_ptr(args->bos), size)) {
+ err = -EFAULT;
+ goto out0;
+ }
+
+ task = kmem_cache_zalloc(pipe->task_slab, GFP_KERNEL);
+ if (!task) {
+ err = -ENOMEM;
+ goto out0;
+ }
+
+ task->frame = task + 1;
+ if (copy_from_user(task->frame, u64_to_user_ptr(args->frame), args->frame_size)) {
+ err = -EFAULT;
+ goto out1;
+ }
+
+ err = pipe->task_validate(pipe, task);
+ if (err)
+ goto out1;
+
+ ctx = lima_ctx_get(&priv->ctx_mgr, args->ctx);
+ if (!ctx) {
+ err = -ENOENT;
+ goto out1;
+ }
+
+ submit.pipe = args->pipe;
+ submit.bos = bos;
+ submit.lbos = (void *)bos + size;
+ submit.nr_bos = args->nr_bos;
+ submit.task = task;
+ submit.ctx = ctx;
+ submit.flags = args->flags;
+ submit.in_sync[0] = args->in_sync[0];
+ submit.in_sync[1] = args->in_sync[1];
+ submit.out_sync = args->out_sync;
+
+ err = lima_gem_submit(file, &submit);
+
+ lima_ctx_put(ctx);
+out1:
+ if (err)
+ kmem_cache_free(pipe->task_slab, task);
+out0:
+ kvfree(bos);
+ return err;
+}
+
+static int lima_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_gem_wait *args = data;
+
+ if (args->op & ~(LIMA_GEM_WAIT_READ|LIMA_GEM_WAIT_WRITE))
+ return -EINVAL;
+
+ return lima_gem_wait(file, args->handle, args->op, args->timeout_ns);
+}
+
+static int lima_ioctl_ctx_create(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_ctx_create *args = data;
+ struct lima_drm_priv *priv = file->driver_priv;
+ struct lima_device *ldev = to_lima_dev(dev);
+
+ if (args->_pad)
+ return -EINVAL;
+
+ return lima_ctx_create(ldev, &priv->ctx_mgr, &args->id);
+}
+
+static int lima_ioctl_ctx_free(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_lima_ctx_create *args = data;
+ struct lima_drm_priv *priv = file->driver_priv;
+
+ if (args->_pad)
+ return -EINVAL;
+
+ return lima_ctx_free(&priv->ctx_mgr, args->id);
+}
+
+static int lima_drm_driver_open(struct drm_device *dev, struct drm_file *file)
+{
+ int err;
+ struct lima_drm_priv *priv;
+ struct lima_device *ldev = to_lima_dev(dev);
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->vm = lima_vm_create(ldev);
+ if (!priv->vm) {
+ err = -ENOMEM;
+ goto err_out0;
+ }
+
+ lima_ctx_mgr_init(&priv->ctx_mgr);
+
+ file->driver_priv = priv;
+ return 0;
+
+err_out0:
+ kfree(priv);
+ return err;
+}
+
+static void lima_drm_driver_postclose(struct drm_device *dev, struct drm_file *file)
+{
+ struct lima_drm_priv *priv = file->driver_priv;
+
+ lima_ctx_mgr_fini(&priv->ctx_mgr);
+ lima_vm_put(priv->vm);
+ kfree(priv);
+}
+
+static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(LIMA_GET_PARAM, lima_ioctl_get_param, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_GEM_CREATE, lima_ioctl_gem_create, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_GEM_INFO, lima_ioctl_gem_info, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_GEM_SUBMIT, lima_ioctl_gem_submit, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_GEM_WAIT, lima_ioctl_gem_wait, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_CTX_CREATE, lima_ioctl_ctx_create, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW),
+};
+
+DEFINE_DRM_GEM_FOPS(lima_drm_driver_fops);
+
+/*
+ * Changelog:
+ *
+ * - 1.1.0 - add heap buffer support
+ */
+
+static const struct drm_driver lima_drm_driver = {
+ .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
+ .open = lima_drm_driver_open,
+ .postclose = lima_drm_driver_postclose,
+ .ioctls = lima_drm_driver_ioctls,
+ .num_ioctls = ARRAY_SIZE(lima_drm_driver_ioctls),
+ .fops = &lima_drm_driver_fops,
+ .name = "lima",
+ .desc = "lima DRM",
+ .date = "20191231",
+ .major = 1,
+ .minor = 1,
+ .patchlevel = 0,
+
+ .gem_create_object = lima_gem_create_object,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .gem_prime_mmap = drm_gem_prime_mmap,
+};
+
+struct lima_block_reader {
+ void *dst;
+ size_t base;
+ size_t count;
+ size_t off;
+ ssize_t read;
+};
+
+static bool lima_read_block(struct lima_block_reader *reader,
+ void *src, size_t src_size)
+{
+ size_t max_off = reader->base + src_size;
+
+ if (reader->off < max_off) {
+ size_t size = min_t(size_t, max_off - reader->off,
+ reader->count);
+
+ memcpy(reader->dst, src + (reader->off - reader->base), size);
+
+ reader->dst += size;
+ reader->off += size;
+ reader->read += size;
+ reader->count -= size;
+ }
+
+ reader->base = max_off;
+
+ return !!reader->count;
+}
+
+static ssize_t lima_error_state_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct lima_device *ldev = dev_get_drvdata(dev);
+ struct lima_sched_error_task *et;
+ struct lima_block_reader reader = {
+ .dst = buf,
+ .count = count,
+ .off = off,
+ };
+
+ mutex_lock(&ldev->error_task_list_lock);
+
+ if (lima_read_block(&reader, &ldev->dump, sizeof(ldev->dump))) {
+ list_for_each_entry(et, &ldev->error_task_list, list) {
+ if (!lima_read_block(&reader, et->data, et->size))
+ break;
+ }
+ }
+
+ mutex_unlock(&ldev->error_task_list_lock);
+ return reader.read;
+}
+
+static ssize_t lima_error_state_write(struct file *file, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct lima_device *ldev = dev_get_drvdata(dev);
+ struct lima_sched_error_task *et, *tmp;
+
+ mutex_lock(&ldev->error_task_list_lock);
+
+ list_for_each_entry_safe(et, tmp, &ldev->error_task_list, list) {
+ list_del(&et->list);
+ kvfree(et);
+ }
+
+ ldev->dump.size = 0;
+ ldev->dump.num_tasks = 0;
+
+ mutex_unlock(&ldev->error_task_list_lock);
+
+ return count;
+}
+
+static const struct bin_attribute lima_error_state_attr = {
+ .attr.name = "error",
+ .attr.mode = 0600,
+ .size = 0,
+ .read = lima_error_state_read,
+ .write = lima_error_state_write,
+};
+
+static int lima_pdev_probe(struct platform_device *pdev)
+{
+ struct lima_device *ldev;
+ struct drm_device *ddev;
+ int err;
+
+ err = lima_sched_slab_init();
+ if (err)
+ return err;
+
+ ldev = devm_kzalloc(&pdev->dev, sizeof(*ldev), GFP_KERNEL);
+ if (!ldev) {
+ err = -ENOMEM;
+ goto err_out0;
+ }
+
+ ldev->dev = &pdev->dev;
+ ldev->id = (enum lima_gpu_id)of_device_get_match_data(&pdev->dev);
+
+ platform_set_drvdata(pdev, ldev);
+
+ /* Allocate and initialize the DRM device. */
+ ddev = drm_dev_alloc(&lima_drm_driver, &pdev->dev);
+ if (IS_ERR(ddev)) {
+ err = PTR_ERR(ddev);
+ goto err_out0;
+ }
+
+ ddev->dev_private = ldev;
+ ldev->ddev = ddev;
+
+ err = lima_device_init(ldev);
+ if (err)
+ goto err_out1;
+
+ err = lima_devfreq_init(ldev);
+ if (err) {
+ dev_err(&pdev->dev, "Fatal error during devfreq init\n");
+ goto err_out2;
+ }
+
+ pm_runtime_set_active(ldev->dev);
+ pm_runtime_mark_last_busy(ldev->dev);
+ pm_runtime_set_autosuspend_delay(ldev->dev, 200);
+ pm_runtime_use_autosuspend(ldev->dev);
+ pm_runtime_enable(ldev->dev);
+
+ /*
+ * Register the DRM device with the core and the connectors with
+ * sysfs.
+ */
+ err = drm_dev_register(ddev, 0);
+ if (err < 0)
+ goto err_out3;
+
+ if (sysfs_create_bin_file(&ldev->dev->kobj, &lima_error_state_attr))
+ dev_warn(ldev->dev, "fail to create error state sysfs\n");
+
+ return 0;
+
+err_out3:
+ pm_runtime_disable(ldev->dev);
+ lima_devfreq_fini(ldev);
+err_out2:
+ lima_device_fini(ldev);
+err_out1:
+ drm_dev_put(ddev);
+err_out0:
+ lima_sched_slab_fini();
+ return err;
+}
+
+static int lima_pdev_remove(struct platform_device *pdev)
+{
+ struct lima_device *ldev = platform_get_drvdata(pdev);
+ struct drm_device *ddev = ldev->ddev;
+
+ sysfs_remove_bin_file(&ldev->dev->kobj, &lima_error_state_attr);
+
+ drm_dev_unregister(ddev);
+
+ /* stop autosuspend to make sure device is in active state */
+ pm_runtime_set_autosuspend_delay(ldev->dev, -1);
+ pm_runtime_disable(ldev->dev);
+
+ lima_devfreq_fini(ldev);
+ lima_device_fini(ldev);
+
+ drm_dev_put(ddev);
+ lima_sched_slab_fini();
+ return 0;
+}
+
+static const struct of_device_id dt_match[] = {
+ { .compatible = "arm,mali-400", .data = (void *)lima_gpu_mali400 },
+ { .compatible = "arm,mali-450", .data = (void *)lima_gpu_mali450 },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dt_match);
+
+static const struct dev_pm_ops lima_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(lima_device_suspend, lima_device_resume, NULL)
+};
+
+static struct platform_driver lima_platform_driver = {
+ .probe = lima_pdev_probe,
+ .remove = lima_pdev_remove,
+ .driver = {
+ .name = "lima",
+ .pm = &lima_pm_ops,
+ .of_match_table = dt_match,
+ },
+};
+
+module_platform_driver(lima_platform_driver);
+
+MODULE_AUTHOR("Lima Project Developers");
+MODULE_DESCRIPTION("Lima DRM Driver");
+MODULE_LICENSE("GPL v2");