diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-09-10 10:15:00 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-10-14 17:48:51 +0300 |
| commit | 6f6d282330a3c85ecbeb54dec5b57282bd177b44 (patch) | |
| tree | d7bacd8541b8459ba0a555c58e38b699f8026eea /include/hw | |
| parent | 079e3e7012a0e3ff80b4786e67f5a5d4341dcd51 (diff) | |
pcie_host: expose address format
Callers pass in the address so it's helpful for
them to be able to decode it.
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/pci/pcie_host.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/hw/pci/pcie_host.h b/include/hw/pci/pcie_host.h index bac3c673d6..da0f2759f7 100644 --- a/include/hw/pci/pcie_host.h +++ b/include/hw/pci/pcie_host.h @@ -54,4 +54,25 @@ void pcie_host_mmcfg_update(PCIExpressHost *e, hwaddr addr, uint32_t size); +/* + * PCI express ECAM (Enhanced Configuration Address Mapping) format. + * AKA mmcfg address + * bit 20 - 28: bus number + * bit 15 - 19: device number + * bit 12 - 14: function number + * bit 0 - 11: offset in configuration space of a given device + */ +#define PCIE_MMCFG_SIZE_MAX (1ULL << 28) +#define PCIE_MMCFG_SIZE_MIN (1ULL << 20) +#define PCIE_MMCFG_BUS_BIT 20 +#define PCIE_MMCFG_BUS_MASK 0x1ff +#define PCIE_MMCFG_DEVFN_BIT 12 +#define PCIE_MMCFG_DEVFN_MASK 0xff +#define PCIE_MMCFG_CONFOFFSET_MASK 0xfff +#define PCIE_MMCFG_BUS(addr) (((addr) >> PCIE_MMCFG_BUS_BIT) & \ + PCIE_MMCFG_BUS_MASK) +#define PCIE_MMCFG_DEVFN(addr) (((addr) >> PCIE_MMCFG_DEVFN_BIT) & \ + PCIE_MMCFG_DEVFN_MASK) +#define PCIE_MMCFG_CONFOFFSET(addr) ((addr) & PCIE_MMCFG_CONFOFFSET_MASK) + #endif /* PCIE_HOST_H */ |