// SPDX-License-Identifier: GPL-2.0 OR MIT
/* Copyright 2017-2019 Qiang Yu <[email protected]> */
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.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,
.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,
};
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;
const struct lima_compatible *comp;
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;
comp = of_device_get_match_data(&pdev->dev);
if (!comp) {
err = -ENODEV;
goto err_out0;
}
ldev->id = comp->id;
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 void 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();
}
static const struct lima_compatible lima_mali400_data = {
.id = lima_gpu_mali400,
};
static const struct lima_compatible lima_mali450_data = {
.id = lima_gpu_mali450,
};
static const struct of_device_id dt_match[] = {
{ .compatible = "arm,mali-400", .data = &lima_mali400_data },
{ .compatible = "arm,mali-450", .data = &lima_mali450_data },
{}
};
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_new = 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");
MODULE_SOFTDEP("pre: governor_simpleondemand");
Codebase Browser
linux