[SeaBIOS] [RFC v2 0/3] Support multiple pci domains in pci_device
Zihan Yang
whois.zihan.yang at gmail.com
Thu Aug 9 07:43:51 CEST 2018
Currently seabios assumes there is only one pci domain(0), and almost
everything operates on pci domain 0 by default. This patch aims to add
multiple pci domain support for pci_device, while reserve the original
API for compatibility.
The reason to get seabios involved is that the pxb-pcie host bus created
in QEMU is now in a different PCI domain, and its bus number would start
from 0 instead of bus_nr. Actually bus_nr should not be used when in
another non-zero domain. However, QEMU only binds port 0xcf8 and 0xcfc to
bus pcie.0. To avoid bus confliction, we should use other port pairs for
busses under new domains.
Current issues:
* when trying to read config space of pcie_pci_bridge, it actually reads
out the result of mch. I'm working on this weird behavior.
Changelog:
v2 <- v1:
- Fix bugs in filtering domains when traversing pci devices
- Reformat some hardcoded codes, such as probing the pci device in pci_setup
Zihan Yang (3):
fw/pciinit: Recognize pxb-pcie-dev device
pci_device: Add pci domain support
pci: filter undesired domain when traversing pci
src/fw/coreboot.c | 2 +-
src/fw/csm.c | 2 +-
src/fw/mptable.c | 1 +
src/fw/paravirt.c | 3 +-
src/fw/pciinit.c | 276 ++++++++++++++++++++++++++++++---------------------
src/hw/ahci.c | 1 +
src/hw/ata.c | 1 +
src/hw/esp-scsi.c | 1 +
src/hw/lsi-scsi.c | 1 +
src/hw/megasas.c | 1 +
src/hw/mpt-scsi.c | 1 +
src/hw/nvme.c | 1 +
src/hw/pci.c | 69 +++++++------
src/hw/pci.h | 42 +++++---
src/hw/pci_ids.h | 6 +-
src/hw/pcidevice.c | 11 +-
src/hw/pcidevice.h | 8 +-
src/hw/pvscsi.c | 1 +
src/hw/sdcard.c | 1 +
src/hw/usb-ehci.c | 1 +
src/hw/usb-ohci.c | 1 +
src/hw/usb-uhci.c | 1 +
src/hw/usb-xhci.c | 1 +
src/hw/virtio-blk.c | 1 +
src/hw/virtio-scsi.c | 1 +
src/optionroms.c | 3 +
26 files changed, 268 insertions(+), 170 deletions(-)
--
2.7.4
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