[PATCH] pci-ids: sync docs + header

[Gerd Hoffmann]

docs/specs/pci-ids.txt and include/hw/pci/pci.h are out of sync,
fix that.  Try improve the comment which points to pci-ids.txt.

Also drop the list of modern virtio devices and explain how they
are calculated instead.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 docs/specs/pci-ids.txt | 19 ++++++++++---------
 include/hw/pci/pci.h   |  7 ++++++-
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/docs/specs/pci-ids.txt b/docs/specs/pci-ids.txt
index dd6859d039d0..6be7bc108d66 100644
--- a/docs/specs/pci-ids.txt
+++ b/docs/specs/pci-ids.txt
@@ -22,16 +22,17 @@ maintained as part of the virtio specification.
 1af4:1004  SCSI host bus adapter device (legacy)
 1af4:1005  entropy generator device (legacy)
 1af4:1009  9p filesystem device (legacy)
+1af4:1012  vsock device (legacy)
+1af4:1013  pmem device (legacy)
+1af4:1014  iommu device (legacy)
+1af4:1015  mem device (legacy)
 
-1af4:1041  network device (modern)
-1af4:1042  block device (modern)
-1af4:1043  console device (modern)
-1af4:1044  entropy generator device (modern)
-1af4:1045  balloon device (modern)
-1af4:1048  SCSI host bus adapter device (modern)
-1af4:1049  9p filesystem device (modern)
-1af4:1050  virtio gpu device (modern)
-1af4:1052  virtio input device (modern)
+1af4:1040  Start of id range for modern virtio devices.  The pci device
+           id is is calculated from the virtio device id by adding the
+           0x1040 offset.  The virtio ids are defined in the virtio
+           specification.  The linux kernel has a header file with
+           defines for all virtio ids (linux/virtio_ids.h), qemu has a
+           copy in include/standard-headers/.
 
 1af4:10f0  Available for experimental usage without registration.  Must get
    to      official ID when the code leaves the test lab (i.e. when seeking
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index b54b6ef88fc3..3b852199660c 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -71,7 +71,12 @@ extern bool pci_available;
 #define PCI_DEVICE_ID_INTEL_82557        0x1229
 #define PCI_DEVICE_ID_INTEL_82801IR      0x2922
 
-/* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */
+/*
+ * Red Hat / Qumranet (for QEMU)
+ *
+ * These are documented in docs/specs/pci-ids.txt
+ * PLEASE KEEP HEADER + DOCS IN SYNC
+ */
 #define PCI_VENDOR_ID_REDHAT_QUMRANET    0x1af4
 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4
 #define PCI_SUBDEVICE_ID_QEMU            0x1100
-- 
2.37.3