c8bc4db403
pcie_sriov_pf_disable_vfs() is called when resetting the PF, but it only disables VFs and does not reset SR-IOV extended capability, leaking the state and making the VF Enable register inconsistent with the actual state. Replace pcie_sriov_pf_disable_vfs() with pcie_sriov_pf_reset(), which does not only disable VFs but also resets the capability. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20240228-reuse-v8-3-282660281e60@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
|
|
* pcie_sriov.h:
|
|
*
|
|
* Implementation of SR/IOV emulation support.
|
|
*
|
|
* Copyright (c) 2015 Knut Omang <knut.omang@oracle.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_PCIE_SRIOV_H
|
|
#define QEMU_PCIE_SRIOV_H
|
|
|
|
#include "hw/pci/pci.h"
|
|
|
|
struct PCIESriovPF {
|
|
uint16_t num_vfs; /* Number of virtual functions created */
|
|
uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */
|
|
const char *vfname; /* Reference to the device type used for the VFs */
|
|
PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */
|
|
};
|
|
|
|
struct PCIESriovVF {
|
|
PCIDevice *pf; /* Pointer back to owner physical function */
|
|
uint16_t vf_number; /* Logical VF number of this function */
|
|
};
|
|
|
|
void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
|
|
const char *vfname, uint16_t vf_dev_id,
|
|
uint16_t init_vfs, uint16_t total_vfs,
|
|
uint16_t vf_offset, uint16_t vf_stride);
|
|
void pcie_sriov_pf_exit(PCIDevice *dev);
|
|
|
|
/* Set up a VF bar in the SR/IOV bar area */
|
|
void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num,
|
|
uint8_t type, dma_addr_t size);
|
|
|
|
/* Instantiate a bar for a VF */
|
|
void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num,
|
|
MemoryRegion *memory);
|
|
|
|
/*
|
|
* Default (minimal) page size support values
|
|
* as required by the SR/IOV standard:
|
|
* 0x553 << 12 = 0x553000 = 4K + 8K + 64K + 256K + 1M + 4M
|
|
*/
|
|
#define SRIOV_SUP_PGSIZE_MINREQ 0x553
|
|
|
|
/*
|
|
* Optionally add supported page sizes to the mask of supported page sizes
|
|
* Page size values are interpreted as opt_sup_pgsize << 12.
|
|
*/
|
|
void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize);
|
|
|
|
/* SR/IOV capability config write handler */
|
|
void pcie_sriov_config_write(PCIDevice *dev, uint32_t address,
|
|
uint32_t val, int len);
|
|
|
|
/* Reset SR/IOV */
|
|
void pcie_sriov_pf_reset(PCIDevice *dev);
|
|
|
|
/* Get logical VF number of a VF - only valid for VFs */
|
|
uint16_t pcie_sriov_vf_number(PCIDevice *dev);
|
|
|
|
/*
|
|
* Get the physical function that owns this VF.
|
|
* Returns NULL if dev is not a virtual function
|
|
*/
|
|
PCIDevice *pcie_sriov_get_pf(PCIDevice *dev);
|
|
|
|
/*
|
|
* Get the n-th VF of this physical function - only valid for PF.
|
|
* Returns NULL if index is invalid
|
|
*/
|
|
PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n);
|
|
|
|
/* Returns the current number of virtual functions. */
|
|
uint16_t pcie_sriov_num_vfs(PCIDevice *dev);
|
|
|
|
#endif /* QEMU_PCIE_SRIOV_H */
|