hw/block/nvme: change controller pci id

There are two reasons for changing this:

  1. The nvme device currently uses an internal Intel device id.

  2. Since commits "nvme: fix write zeroes offset and count" and "nvme:
     support multiple namespaces" the controller device no longer has
     the quirks that the Linux kernel think it has.

     As the quirks are applied based on pci vendor and device id, change
     them to get rid of the quirks.

To keep backward compatibility, add a new 'use-intel-id' parameter to
the nvme device to force use of the Intel vendor and device id. This is
off by default but add a compat property to set this for 5.1 machines
and older. If a 5.1 machine is booted (or the use-intel-id parameter is
explicitly set to true), the Linux kernel will just apply these
unnecessary quirks:

  1. NVME_QUIRK_IDENTIFY_CNS which says that the device does not support
     anything else than values 0x0 and 0x1 for CNS (Identify Namespace
     and Identify Namespace). With multiple namespace support, this just
     means that the kernel will "scan" namespaces instead of using
     "Active Namespace ID list" (CNS 0x2).

  2. NVME_QUIRK_DISABLE_WRITE_ZEROES. The nvme device started out with a
     broken Write Zeroes implementation which has since been fixed in
     commit 9d6459d21a6e ("nvme: fix write zeroes offset and count").

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index d6749fdd96e1ef92244c4f69bc221d0104f05c4d..da8344f196a8734c98a924a8e5605beb0637f263 100644 (file)
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -2683,6 +2683,15 @@ static void nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev, Error **errp)
 
     pci_conf[PCI_INTERRUPT_PIN] = 1;
     pci_config_set_prog_interface(pci_conf, 0x2);
+
+    if (n->params.use_intel_id) {
+        pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
+        pci_config_set_device_id(pci_conf, 0x5845);
+    } else {
+        pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REDHAT);
+        pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REDHAT_NVME);
+    }
+
     pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_EXPRESS);
     pcie_endpoint_cap_init(pci_dev, 0x80);
 
@@ -2836,6 +2845,7 @@ static Property nvme_props[] = {
     DEFINE_PROP_UINT8("aerl", NvmeCtrl, params.aerl, 3),
     DEFINE_PROP_UINT32("aer_max_queued", NvmeCtrl, params.aer_max_queued, 64),
     DEFINE_PROP_UINT8("mdts", NvmeCtrl, params.mdts, 7),
+    DEFINE_PROP_BOOL("use-intel-id", NvmeCtrl, params.use_intel_id, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -2852,8 +2862,6 @@ static void nvme_class_init(ObjectClass *oc, void *data)
     pc->realize = nvme_realize;
     pc->exit = nvme_exit;
     pc->class_id = PCI_CLASS_STORAGE_EXPRESS;
-    pc->vendor_id = PCI_VENDOR_ID_INTEL;
-    pc->device_id = 0x5845;
     pc->revision = 2;
 
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);

diff --git a/hw/block/nvme.h b/hw/block/nvme.h
index d96ec15cdffba0c9f4d45511dd1e649753909dd0..e080a2318a50689eb8c6c94c15f32e56dcb29ebd 100644 (file)
--- a/hw/block/nvme.h
+++ b/hw/block/nvme.h
@@ -15,6 +15,7 @@ typedef struct NvmeParams {
     uint8_t  aerl;
     uint32_t aer_max_queued;
     uint8_t  mdts;
+    bool     use_intel_id;
 } NvmeParams;
 
 typedef struct NvmeAsyncEvent {

diff --git a/hw/core/machine.c b/hw/core/machine.c
index ea26d612374de592d4c3d82d2050a78e3d05a28e..944120cf19c8ffb84ef1ee8aaf705819dd1164d0 100644 (file)
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -34,6 +34,7 @@ GlobalProperty hw_compat_5_1[] = {
     { "vhost-user-scsi", "num_queues", "1"},
     { "virtio-blk-device", "num-queues", "1"},
     { "virtio-scsi-device", "num_queues", "1"},
+    { "nvme", "use-intel-id", "on"},
 };
 const size_t hw_compat_5_1_len = G_N_ELEMENTS(hw_compat_5_1);