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// 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 <drm/drm_ioctl.h>
#include <drm/drm_drv.h>
#include <drm/drm_prime.h>
#include <drm/lima_drm.h>
#include "lima_drv.h"
#include "lima_gem.h"
#include "lima_gem_prime.h"
#include "lima_vm.h"
int lima_sched_timeout_ms;
MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 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)
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),
};
static const struct file_operations lima_drm_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.mmap = lima_gem_mmap,
};
static 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,
.gem_free_object_unlocked = lima_gem_free_object,
.gem_open_object = lima_gem_object_open,
.gem_close_object = lima_gem_object_close,
.gem_vm_ops = &lima_gem_vm_ops,
.name = "lima",
.desc = "lima DRM",
.date = "20190217",
.major = 1,
.minor = 0,
.patchlevel = 0,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import_sg_table = lima_gem_prime_import_sg_table,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.gem_prime_get_sg_table = lima_gem_prime_get_sg_table,
.gem_prime_mmap = lima_gem_prime_mmap,
};
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->pdev = pdev;
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))
return PTR_ERR(ddev);
ddev->dev_private = ldev;
ldev->ddev = ddev;
err = lima_device_init(ldev);
if (err)
goto err_out1;
/*
* Register the DRM device with the core and the connectors with
* sysfs.
*/
err = drm_dev_register(ddev, 0);
if (err < 0)
goto err_out2;
return 0;
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;
drm_dev_unregister(ddev);
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 struct platform_driver lima_platform_driver = {
.probe = lima_pdev_probe,
.remove = lima_pdev_remove,
.driver = {
.name = "lima",
.of_match_table = dt_match,
},
};
static int __init lima_init(void)
{
return platform_driver_register(&lima_platform_driver);
}
module_init(lima_init);
static void __exit lima_exit(void)
{
platform_driver_unregister(&lima_platform_driver);
}
module_exit(lima_exit);
MODULE_AUTHOR("Lima Project Developers");
MODULE_DESCRIPTION("Lima DRM Driver");
MODULE_LICENSE("GPL v2");
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