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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <drm/drm_managed.h>
#include "xe_tile.h"
#include "xe_tile_sysfs.h"
static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
{
kfree(kobj);
}
static const struct kobj_type xe_tile_sysfs_kobj_type = {
.release = xe_tile_sysfs_kobj_release,
.sysfs_ops = &kobj_sysfs_ops,
};
static ssize_t
physical_vram_size_bytes_show(struct device *kdev, struct device_attribute *attr,
char *buf)
{
struct xe_tile *tile = kobj_to_tile(&kdev->kobj);
return sysfs_emit(buf, "%llu\n", tile->mem.vram.actual_physical_size);
}
static DEVICE_ATTR_RO(physical_vram_size_bytes);
static const struct attribute *physical_memsize_attr =
&dev_attr_physical_vram_size_bytes.attr;
static void tile_sysfs_fini(struct drm_device *drm, void *arg)
{
struct xe_tile *tile = arg;
kobject_put(tile->sysfs);
}
void xe_tile_sysfs_init(struct xe_tile *tile)
{
struct xe_device *xe = tile_to_xe(tile);
struct device *dev = xe->drm.dev;
struct kobj_tile *kt;
int err;
kt = kzalloc(sizeof(*kt), GFP_KERNEL);
if (!kt)
return;
kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
kt->tile = tile;
err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
if (err) {
kobject_put(&kt->base);
drm_warn(&xe->drm, "failed to register TILE sysfs directory, err: %d\n", err);
return;
}
tile->sysfs = &kt->base;
if (IS_DGFX(xe) && xe->info.platform != XE_DG1 &&
sysfs_create_file(tile->sysfs, physical_memsize_attr))
drm_warn(&xe->drm,
"Sysfs creation to read addr_range per tile failed\n");
err = drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
if (err) {
drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
__func__, err);
return;
}
}
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