Re: [PATCH v5 24/26] nvme: change controller pci id

[Maxim Levitsky <mlevitsk@redhat.com>]

On Tue, 2020-02-04 at 10:52 +0100, Klaus Jensen wrote:
> 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 'x-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 machines 4.2
> and older.
> 
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> ---
>  hw/block/nvme.c   | 13 +++++++++----
>  hw/block/nvme.h   |  4 +++-
>  hw/core/machine.c |  1 +
>  3 files changed, 13 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 3a377bc56734..bdef53a590b0 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -2467,8 +2467,15 @@ static void nvme_init_pci(NvmeCtrl *n, PCIDevice *pci_dev)
>  
>      pci_conf[PCI_INTERRUPT_PIN] = 1;
>      pci_config_set_prog_interface(pci_conf, 0x2);
> -    pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
> -    pci_config_set_device_id(pci_conf, 0x5845);
> +
> +    if (n->params.use_intel_id) {
> +        pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
> +        pci_config_set_device_id(pci_conf, 0x5846);
> +    } 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);
>  
> @@ -2638,8 +2645,6 @@ 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 c3cef0f024da..6b584f53ed64 100644
> --- a/hw/block/nvme.h
> +++ b/hw/block/nvme.h
> @@ -12,7 +12,8 @@
>      DEFINE_PROP_UINT32("num_queues", _state, _props.num_queues, 64), \
>      DEFINE_PROP_UINT8("aerl", _state, _props.aerl, 3), \
>      DEFINE_PROP_UINT32("aer_max_queued", _state, _props.aer_max_queued, 64), \
> -    DEFINE_PROP_UINT8("mdts", _state, _props.mdts, 7)
> +    DEFINE_PROP_UINT8("mdts", _state, _props.mdts, 7), \
> +    DEFINE_PROP_BOOL("x-use-intel-id", _state, _props.use_intel_id, false)
>  
>  typedef struct NvmeParams {
>      char     *serial;
> @@ -21,6 +22,7 @@ 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 3e288bfceb7f..984412d98c9d 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -34,6 +34,7 @@ GlobalProperty hw_compat_4_2[] = {
>      { "vhost-blk-device", "seg_max_adjust", "off"},
>      { "usb-host", "suppress-remote-wake", "off" },
>      { "usb-redir", "suppress-remote-wake", "off" },
> +    { "nvme", "x-use-intel-id", "on"},
>  };
>  const size_t hw_compat_4_2_len = G_N_ELEMENTS(hw_compat_4_2);
>  

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

Best regards,
	Maxim Levitsky