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9641df8197
Add sysfs entry to read per tile physical memory
including stolen memory.
V5:
- rename var name and make it part of vram struct - Lucas
V4:
- %s/addr_range/physical_vram_size_byes, make it
user readable name - Joonas/Aravind
- Display in bytes - Joonas/Aravind
V3:
- Exclude DG1, replace sysfs_create_file/files - Aravind
V2:
- Use DEVICE_ATTR_RO - Aravind
- Dont put kobj on sysfs_file_create fail - Himal
- Skip addr_range sysfs create for non dgfx - Himal
Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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#include <drm/drm_managed.h>
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#include "xe_tile.h"
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#include "xe_tile_sysfs.h"
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static void xe_tile_sysfs_kobj_release(struct kobject *kobj)
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{
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kfree(kobj);
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}
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static const struct kobj_type xe_tile_sysfs_kobj_type = {
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.release = xe_tile_sysfs_kobj_release,
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.sysfs_ops = &kobj_sysfs_ops,
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};
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static ssize_t
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physical_vram_size_bytes_show(struct device *kdev, struct device_attribute *attr,
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char *buf)
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{
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struct xe_tile *tile = kobj_to_tile(&kdev->kobj);
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return sysfs_emit(buf, "%llu\n", tile->mem.vram.actual_physical_size);
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}
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static DEVICE_ATTR_RO(physical_vram_size_bytes);
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static const struct attribute *physical_memsize_attr =
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&dev_attr_physical_vram_size_bytes.attr;
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static void tile_sysfs_fini(struct drm_device *drm, void *arg)
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{
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struct xe_tile *tile = arg;
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kobject_put(tile->sysfs);
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}
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void xe_tile_sysfs_init(struct xe_tile *tile)
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{
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struct xe_device *xe = tile_to_xe(tile);
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struct device *dev = xe->drm.dev;
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struct kobj_tile *kt;
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int err;
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kt = kzalloc(sizeof(*kt), GFP_KERNEL);
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if (!kt)
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return;
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kobject_init(&kt->base, &xe_tile_sysfs_kobj_type);
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kt->tile = tile;
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err = kobject_add(&kt->base, &dev->kobj, "tile%d", tile->id);
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if (err) {
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kobject_put(&kt->base);
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drm_warn(&xe->drm, "failed to register TILE sysfs directory, err: %d\n", err);
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return;
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}
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tile->sysfs = &kt->base;
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if (IS_DGFX(xe) && xe->info.platform != XE_DG1 &&
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sysfs_create_file(tile->sysfs, physical_memsize_attr))
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drm_warn(&xe->drm,
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"Sysfs creation to read addr_range per tile failed\n");
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err = drmm_add_action_or_reset(&xe->drm, tile_sysfs_fini, tile);
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if (err) {
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drm_warn(&xe->drm, "%s: drmm_add_action_or_reset failed, err: %d\n",
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__func__, err);
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return;
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}
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}
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