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221 lines
7.1 KiB
221 lines
7.1 KiB
/* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */ |
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/* |
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* Freescale hypervisor ioctl and kernel interface |
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* |
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* Copyright (C) 2008-2011 Freescale Semiconductor, Inc. |
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* Author: Timur Tabi <[email protected]> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* * Neither the name of Freescale Semiconductor nor the |
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* names of its contributors may be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* |
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* ALTERNATIVELY, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") as published by the Free Software |
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* Foundation, either version 2 of that License or (at your option) any |
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* later version. |
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* |
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* This software is provided by Freescale Semiconductor "as is" and any |
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* express or implied warranties, including, but not limited to, the implied |
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* warranties of merchantability and fitness for a particular purpose are |
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* disclaimed. In no event shall Freescale Semiconductor be liable for any |
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* direct, indirect, incidental, special, exemplary, or consequential damages |
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* (including, but not limited to, procurement of substitute goods or services; |
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* loss of use, data, or profits; or business interruption) however caused and |
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* on any theory of liability, whether in contract, strict liability, or tort |
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* (including negligence or otherwise) arising in any way out of the use of this |
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* software, even if advised of the possibility of such damage. |
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* |
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* This file is used by the Freescale hypervisor management driver. It can |
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* also be included by applications that need to communicate with the driver |
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* via the ioctl interface. |
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*/ |
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#ifndef _UAPIFSL_HYPERVISOR_H |
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#define _UAPIFSL_HYPERVISOR_H |
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#include <linux/types.h> |
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/** |
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* struct fsl_hv_ioctl_restart - restart a partition |
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* @ret: return error code from the hypervisor |
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* @partition: the ID of the partition to restart, or -1 for the |
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* calling partition |
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* |
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* Used by FSL_HV_IOCTL_PARTITION_RESTART |
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*/ |
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struct fsl_hv_ioctl_restart { |
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__u32 ret; |
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__u32 partition; |
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}; |
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/** |
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* struct fsl_hv_ioctl_status - get a partition's status |
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* @ret: return error code from the hypervisor |
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* @partition: the ID of the partition to query, or -1 for the |
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* calling partition |
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* @status: The returned status of the partition |
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* |
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* Used by FSL_HV_IOCTL_PARTITION_GET_STATUS |
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* |
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* Values of 'status': |
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* 0 = Stopped |
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* 1 = Running |
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* 2 = Starting |
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* 3 = Stopping |
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*/ |
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struct fsl_hv_ioctl_status { |
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__u32 ret; |
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__u32 partition; |
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__u32 status; |
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}; |
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/** |
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* struct fsl_hv_ioctl_start - start a partition |
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* @ret: return error code from the hypervisor |
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* @partition: the ID of the partition to control |
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* @entry_point: The offset within the guest IMA to start execution |
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* @load: If non-zero, reload the partition's images before starting |
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* |
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* Used by FSL_HV_IOCTL_PARTITION_START |
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*/ |
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struct fsl_hv_ioctl_start { |
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__u32 ret; |
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__u32 partition; |
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__u32 entry_point; |
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__u32 load; |
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}; |
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/** |
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* struct fsl_hv_ioctl_stop - stop a partition |
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* @ret: return error code from the hypervisor |
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* @partition: the ID of the partition to stop, or -1 for the calling |
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* partition |
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* |
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* Used by FSL_HV_IOCTL_PARTITION_STOP |
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*/ |
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struct fsl_hv_ioctl_stop { |
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__u32 ret; |
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__u32 partition; |
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}; |
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/** |
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* struct fsl_hv_ioctl_memcpy - copy memory between partitions |
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* @ret: return error code from the hypervisor |
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* @source: the partition ID of the source partition, or -1 for this |
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* partition |
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* @target: the partition ID of the target partition, or -1 for this |
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* partition |
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* @reserved: reserved, must be set to 0 |
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* @local_addr: user-space virtual address of a buffer in the local |
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* partition |
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* @remote_addr: guest physical address of a buffer in the |
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* remote partition |
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* @count: the number of bytes to copy. Both the local and remote |
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* buffers must be at least 'count' bytes long |
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* |
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* Used by FSL_HV_IOCTL_MEMCPY |
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* |
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* The 'local' partition is the partition that calls this ioctl. The |
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* 'remote' partition is a different partition. The data is copied from |
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* the 'source' paritition' to the 'target' partition. |
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* |
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* The buffer in the remote partition must be guest physically |
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* contiguous. |
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* |
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* This ioctl does not support copying memory between two remote |
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* partitions or within the same partition, so either 'source' or |
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* 'target' (but not both) must be -1. In other words, either |
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* |
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* source == local and target == remote |
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* or |
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* source == remote and target == local |
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*/ |
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struct fsl_hv_ioctl_memcpy { |
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__u32 ret; |
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__u32 source; |
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__u32 target; |
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__u32 reserved; /* padding to ensure local_vaddr is aligned */ |
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__u64 local_vaddr; |
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__u64 remote_paddr; |
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__u64 count; |
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}; |
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/** |
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* struct fsl_hv_ioctl_doorbell - ring a doorbell |
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* @ret: return error code from the hypervisor |
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* @doorbell: the handle of the doorbell to ring doorbell |
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* |
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* Used by FSL_HV_IOCTL_DOORBELL |
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*/ |
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struct fsl_hv_ioctl_doorbell { |
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__u32 ret; |
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__u32 doorbell; |
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}; |
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/** |
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* struct fsl_hv_ioctl_prop - get/set a device tree property |
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* @ret: return error code from the hypervisor |
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* @handle: handle of partition whose tree to access |
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* @path: virtual address of path name of node to access |
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* @propname: virtual address of name of property to access |
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* @propval: virtual address of property data buffer |
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* @proplen: Size of property data buffer |
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* @reserved: reserved, must be set to 0 |
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* |
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* Used by FSL_HV_IOCTL_DOORBELL |
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*/ |
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struct fsl_hv_ioctl_prop { |
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__u32 ret; |
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__u32 handle; |
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__u64 path; |
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__u64 propname; |
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__u64 propval; |
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__u32 proplen; |
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__u32 reserved; /* padding to ensure structure is aligned */ |
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}; |
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/* The ioctl type, documented in ioctl-number.txt */ |
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#define FSL_HV_IOCTL_TYPE 0xAF |
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/* Restart another partition */ |
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#define FSL_HV_IOCTL_PARTITION_RESTART \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 1, struct fsl_hv_ioctl_restart) |
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/* Get a partition's status */ |
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#define FSL_HV_IOCTL_PARTITION_GET_STATUS \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 2, struct fsl_hv_ioctl_status) |
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/* Boot another partition */ |
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#define FSL_HV_IOCTL_PARTITION_START \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 3, struct fsl_hv_ioctl_start) |
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/* Stop this or another partition */ |
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#define FSL_HV_IOCTL_PARTITION_STOP \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 4, struct fsl_hv_ioctl_stop) |
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/* Copy data from one partition to another */ |
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#define FSL_HV_IOCTL_MEMCPY \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 5, struct fsl_hv_ioctl_memcpy) |
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/* Ring a doorbell */ |
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#define FSL_HV_IOCTL_DOORBELL \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 6, struct fsl_hv_ioctl_doorbell) |
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/* Get a property from another guest's device tree */ |
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#define FSL_HV_IOCTL_GETPROP \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 7, struct fsl_hv_ioctl_prop) |
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/* Set a property in another guest's device tree */ |
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#define FSL_HV_IOCTL_SETPROP \ |
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_IOWR(FSL_HV_IOCTL_TYPE, 8, struct fsl_hv_ioctl_prop) |
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#endif /* _UAPIFSL_HYPERVISOR_H */
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