mirror of
https://github.com/xen-project/xen.git
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Jiqian Chen
b93e5981d2
On PVH dom0, when passthrough a device to domU, QEMU and xl tools want to use gsi number to do pirq mapping, see QEMU code xen_pt_realize->xc_physdev_map_pirq, and xl code pci_add_dm_done->xc_physdev_map_pirq, but in current codes, the gsi number is got from file /sys/bus/pci/devices/<sbdf>/irq, that is wrong, because irq is not equal with gsi, they are in different spaces, so pirq mapping fails. And in current codes, there is no method to get gsi for userspace. For above purpose, add new function to get gsi, and the corresponding ioctl is implemented on linux kernel side. Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Chen Jiqian <Jiqian.Chen@amd.com> Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>
128 lines
4.0 KiB
C
128 lines
4.0 KiB
C
/******************************************************************************
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* privcmd.h
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*
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* Interface to /dev/xen/privcmd.
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*
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* Copyright (c) 2003-2005, K A Fraser
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef __LINUX_PUBLIC_PRIVCMD_H__
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#define __LINUX_PUBLIC_PRIVCMD_H__
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#include <linux/types.h>
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#ifndef __user
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#define __user
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#endif
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typedef struct privcmd_hypercall
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{
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__u64 op;
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__u64 arg[5];
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} privcmd_hypercall_t;
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typedef struct privcmd_mmap_entry {
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__u64 va;
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__u64 mfn;
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__u64 npages;
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} privcmd_mmap_entry_t;
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typedef struct privcmd_mmap {
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int num;
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domid_t dom; /* target domain */
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privcmd_mmap_entry_t __user *entry;
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} privcmd_mmap_t;
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typedef struct privcmd_mmapbatch {
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int num; /* number of pages to populate */
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domid_t dom; /* target domain */
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__u64 addr; /* virtual address */
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xen_pfn_t __user *arr; /* array of mfns - top nibble set on err */
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} privcmd_mmapbatch_t;
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#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
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#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
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typedef struct privcmd_mmapbatch_v2 {
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unsigned int num; /* number of pages to populate */
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domid_t dom; /* target domain */
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__u64 addr; /* virtual address */
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const xen_pfn_t __user *arr; /* array of mfns */
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int __user *err; /* array of error codes */
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} privcmd_mmapbatch_v2_t;
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typedef struct privcmd_dm_op_buf {
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void __user *uptr;
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size_t size;
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} privcmd_dm_op_buf_t;
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typedef struct privcmd_dm_op {
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domid_t dom;
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__u16 num;
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const privcmd_dm_op_buf_t __user *ubufs;
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} privcmd_dm_op_t;
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typedef struct privcmd_mmap_resource {
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domid_t dom;
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__u32 type;
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__u32 id;
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__u32 idx;
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__u64 num;
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__u64 addr;
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} privcmd_mmap_resource_t;
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typedef struct privcmd_pcidev_get_gsi {
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__u32 sbdf;
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__u32 gsi;
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} privcmd_pcidev_get_gsi_t;
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/*
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* @cmd: IOCTL_PRIVCMD_HYPERCALL
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* @arg: &privcmd_hypercall_t
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* Return: Value returned from execution of the specified hypercall.
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*/
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#define IOCTL_PRIVCMD_HYPERCALL \
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_IOC(_IOC_NONE, 'P', 0, sizeof(privcmd_hypercall_t))
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#define IOCTL_PRIVCMD_MMAP \
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_IOC(_IOC_NONE, 'P', 2, sizeof(privcmd_mmap_t))
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#define IOCTL_PRIVCMD_MMAPBATCH \
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_IOC(_IOC_NONE, 'P', 3, sizeof(privcmd_mmapbatch_t))
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#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
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_IOC(_IOC_NONE, 'P', 4, sizeof(privcmd_mmapbatch_v2_t))
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#define IOCTL_PRIVCMD_DM_OP \
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_IOC(_IOC_NONE, 'P', 5, sizeof(privcmd_dm_op_t))
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#define IOCTL_PRIVCMD_RESTRICT \
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_IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
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#define IOCTL_PRIVCMD_MMAP_RESOURCE \
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_IOC(_IOC_NONE, 'P', 7, sizeof(privcmd_mmap_resource_t))
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#define IOCTL_PRIVCMD_PCIDEV_GET_GSI \
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_IOC(_IOC_NONE, 'P', 10, sizeof(privcmd_pcidev_get_gsi_t))
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#define IOCTL_PRIVCMD_UNIMPLEMENTED \
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_IOC(_IOC_NONE, 'P', 0xFF, 0)
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#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
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