diff options
| author | Jean-Philippe Brucker <jean-philippe.brucker@arm.com> | 2018-06-18 19:42:03 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-06-19 12:26:39 +0100 |
| commit | 1a51c93d9407515ba049c2f705631692d469473b (patch) | |
| tree | 81dad39961d456b37da02f12fb6976efb4799792 /include | |
| parent | 8f46c736eae508f0973d41618db17cced6b5796c (diff) | |
| download | kvmtool-1a51c93d9407515ba049c2f705631692d469473b.tar.gz | |
pci: add capability helpers
Add a way to iterate over all capabilities in a config space. Add a search
function for getting a specific capability.
Reviewed-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/kvm/pci.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/kvm/pci.h b/include/kvm/pci.h index 5d9c0f3b..01c244bc 100644 --- a/include/kvm/pci.h +++ b/include/kvm/pci.h @@ -58,6 +58,11 @@ struct msix_cap { u32 pba_offset; }; +struct pci_cap_hdr { + u8 type; + u8 next; +}; + #define PCI_BAR_OFFSET(b) (offsetof(struct pci_device_header, bar[b])) #define PCI_DEV_CFG_SIZE 256 #define PCI_DEV_CFG_MASK (PCI_DEV_CFG_SIZE - 1) @@ -113,6 +118,13 @@ struct pci_device_header { enum irq_type irq_type; }; +#define PCI_CAP(pci_hdr, pos) ((void *)(pci_hdr) + (pos)) + +#define pci_for_each_cap(pos, cap, hdr) \ + for ((pos) = (hdr)->capabilities & ~3; \ + (cap) = PCI_CAP(hdr, pos), (pos) != 0; \ + (pos) = ((struct pci_cap_hdr *)(cap))->next & ~3) + int pci__init(struct kvm *kvm); int pci__exit(struct kvm *kvm); struct pci_device_header *pci__find_dev(u8 dev_num); @@ -121,4 +133,6 @@ void pci__assign_irq(struct device_header *dev_hdr); void pci__config_wr(struct kvm *kvm, union pci_config_address addr, void *data, int size); void pci__config_rd(struct kvm *kvm, union pci_config_address addr, void *data, int size); +void *pci_find_cap(struct pci_device_header *hdr, u8 cap_type); + #endif /* KVM__PCI_H */ |