xqemu/include/hw/pci
Daniel P. Berrangé d4715481de i386: clarify that the Q35 machine type implements a P35 chipset
The 'q35' machine type implements an Intel Series 3 chipset,
of which there are several variants:

  https://www.intel.com/Assets/PDF/datasheet/316966.pdf

The key difference between the 82P35 MCH ('p35', PCI device ID 0x29c0)
and 82Q35 GMCH ('q35', PCI device ID 0x29b0) variants is that the latter
has an integrated graphics adapter. QEMU does not implement integrated
graphics, so uses the PCI ID for the 82P35 chipset, despite calling the
machine type 'q35'. Thus we rename the PCI device ID constant to reflect
reality, to avoid confusing future developers. The new name more closely
matches what pci.ids reports it to be:

$ grep  P35 /usr/share/hwdata/pci.ids  | grep 29
	29c0  82G33/G31/P35/P31 Express DRAM Controller
	29c1  82G33/G31/P35/P31 Express PCI Express Root Port
	29c4  82G33/G31/P35/P31 Express MEI Controller
	29c5  82G33/G31/P35/P31 Express MEI Controller
	29c6  82G33/G31/P35/P31 Express PT IDER Controller
	29c7  82G33/G31/P35/P31 Express Serial KT Controller

$ grep  Q35 /usr/share/hwdata/pci.ids  | grep 29
	29b0  82Q35 Express DRAM Controller
	29b1  82Q35 Express PCI Express Root Port
	29b2  82Q35 Express Integrated Graphics Controller
	29b3  82Q35 Express Integrated Graphics Controller
	29b4  82Q35 Express MEI Controller
	29b5  82Q35 Express MEI Controller
	29b6  82Q35 Express PT IDER Controller
	29b7  82Q35 Express Serial KT Controller

Arguably the QEMU machine type should be named 'p35'. At this point in
time, however, it is not worth the churn for management applications &
documentation to worry about renaming it.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180830105757.10577-1-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-11-06 21:35:05 +01:00
..
msi.h pci: Convert msi_init() to Error and fix callers to check it 2016-07-05 13:14:41 +03:00
msix.h pci: Convert msix_init() to Error and fix callers 2017-02-01 03:37:18 +02:00
pci.h scsi: remove unused lsi53c895a_create() and lsi53c810_create() functions 2018-09-25 11:12:25 +10:00
pci_bridge.h hw/pci: factor PCI reserve resources to a separate structure 2018-09-07 17:05:18 -04:00
pci_bus.h pci: Move bridge data structures from pci_bus.h to pci_bridge.h 2017-12-05 19:13:45 +02:00
pci_host.h pci: Fold host_buses list into PCIHostState functionality 2013-07-07 23:10:57 +03:00
pci_ids.h i386: clarify that the Q35 machine type implements a P35 chipset 2018-11-06 21:35:05 +01:00
pci_regs.h pci: Introduce define for PM capability version 1.1 2016-06-02 10:42:09 +08:00
pcie.h pci: Convert to realize 2017-07-03 22:29:49 +03:00
pcie_aer.h pci: Reduce scope of error injection 2017-05-08 20:32:14 +02:00
pcie_host.h ppc4xx: Add device models found in PPC440 core SoCs 2018-02-16 14:06:07 +11:00
pcie_port.h hw/pci: add QEMU-specific PCI capability to the Generic PCI Express Root Port 2017-09-08 16:15:17 +03:00
pcie_regs.h pcie: Add support for PCIe CAP v1 2016-06-02 10:42:26 +08:00
shpc.h pci: Convert shpc_init() to Error 2017-07-03 22:29:49 +03:00
slotid_cap.h pci: Convert shpc_init() to Error 2017-07-03 22:29:49 +03:00