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24ffa71b0f
Decouple virt-pci and virtio_pcidev, refactoring virtio_pcidev into its own module. Define a set of APIs for virt-pci. This allows for future addition of more PCI emulation implementations. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250315161910.4082396-3-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __UM_VIRT_PCI_H
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#define __UM_VIRT_PCI_H
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#include <linux/pci.h>
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struct um_pci_device {
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const struct um_pci_ops *ops;
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/* for now just standard BARs */
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u8 resptr[PCI_STD_NUM_BARS];
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int irq;
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};
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struct um_pci_ops {
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unsigned long (*cfgspace_read)(struct um_pci_device *dev,
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unsigned int offset, int size);
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void (*cfgspace_write)(struct um_pci_device *dev, unsigned int offset,
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int size, unsigned long val);
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unsigned long (*bar_read)(struct um_pci_device *dev, int bar,
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unsigned int offset, int size);
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void (*bar_write)(struct um_pci_device *dev, int bar,
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unsigned int offset, int size, unsigned long val);
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void (*bar_copy_from)(struct um_pci_device *dev, int bar, void *buffer,
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unsigned int offset, int size);
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void (*bar_copy_to)(struct um_pci_device *dev, int bar,
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unsigned int offset, const void *buffer, int size);
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void (*bar_set)(struct um_pci_device *dev, int bar,
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unsigned int offset, u8 value, int size);
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};
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int um_pci_device_register(struct um_pci_device *dev);
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void um_pci_device_unregister(struct um_pci_device *dev);
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int um_pci_platform_device_register(struct um_pci_device *dev);
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void um_pci_platform_device_unregister(struct um_pci_device *dev);
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#endif /* __UM_VIRT_PCI_H */
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