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4c172bbfaa
We want to stop using the acronym KMD. Therefore, replace all locations (except for register names we can't modify) where KMD is written to other terms such as "Linux kernel driver" or "Host kernel driver", etc. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2016-2019 HabanaLabs, Ltd.
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* All Rights Reserved.
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*/
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#include "habanalabs.h"
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#include <linux/slab.h>
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int hl_asid_init(struct hl_device *hdev)
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{
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hdev->asid_bitmap = kcalloc(BITS_TO_LONGS(hdev->asic_prop.max_asid),
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sizeof(*hdev->asid_bitmap), GFP_KERNEL);
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if (!hdev->asid_bitmap)
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return -ENOMEM;
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mutex_init(&hdev->asid_mutex);
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/* ASID 0 is reserved for the kernel driver and device CPU */
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set_bit(0, hdev->asid_bitmap);
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return 0;
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}
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void hl_asid_fini(struct hl_device *hdev)
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{
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mutex_destroy(&hdev->asid_mutex);
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kfree(hdev->asid_bitmap);
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}
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unsigned long hl_asid_alloc(struct hl_device *hdev)
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{
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unsigned long found;
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mutex_lock(&hdev->asid_mutex);
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found = find_first_zero_bit(hdev->asid_bitmap,
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hdev->asic_prop.max_asid);
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if (found == hdev->asic_prop.max_asid)
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found = 0;
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else
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set_bit(found, hdev->asid_bitmap);
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mutex_unlock(&hdev->asid_mutex);
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return found;
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}
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void hl_asid_free(struct hl_device *hdev, unsigned long asid)
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{
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if (WARN((asid == 0 || asid >= hdev->asic_prop.max_asid),
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"Invalid ASID %lu", asid))
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return;
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clear_bit(asid, hdev->asid_bitmap);
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}
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