swh:1:snp:77163734605b0ec556b01d897b7bb4a7e30d46b6
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Tip revision: af2d861d4cd2a4da5137f795ee3509e6f944a25b authored by Linus Torvalds on 24 April 2022, 21:51:22 UTC
Linux 5.18-rc4
Tip revision: af2d861
uacce.h
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
#ifndef _UAPIUUACCE_H
#define _UAPIUUACCE_H

#include <linux/types.h>
#include <linux/ioctl.h>

/*
 * UACCE_CMD_START_Q: Start queue
 */
#define UACCE_CMD_START_Q	_IO('W', 0)

/*
 * UACCE_CMD_PUT_Q:
 * User actively stop queue and free queue resource immediately
 * Optimization method since close fd may delay
 */
#define UACCE_CMD_PUT_Q		_IO('W', 1)

/*
 * UACCE Device flags:
 * UACCE_DEV_SVA: Shared Virtual Addresses
 *		  Support PASID
 *		  Support device page faults (PCI PRI or SMMU Stall)
 */
#define UACCE_DEV_SVA		BIT(0)

/**
 * enum uacce_qfrt: queue file region type
 * @UACCE_QFRT_MMIO: device mmio region
 * @UACCE_QFRT_DUS: device user share region
 */
enum uacce_qfrt {
	UACCE_QFRT_MMIO = 0,
	UACCE_QFRT_DUS = 1,
};

#endif
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