On Sun, Mar 06, 2016 at 10:02:30PM +0000, Robin H. Johnson wrote:
> Introduce PCI_VENDOR/PCI_SUBVENDOR/PCI_SUBDEVICE defines to replace the
> constants scattered in the kernel already used to detect QEMU.
>
> They are defined in the QEMU codebase per docs/specs/pci-ids.txt.
>
> Signed-off-by: Robin H. Johnson <robbat2@xxxxxxxxxx>
> Reviewed-by: Takashi Iwai <tiwai@xxxxxxx>
> Reviewed-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
> ---
Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
PCI tree seems to make the most sense.
Bjorn, can you merge this please?
> This change prompted by a near-miss in the review of recent change:
> 'drm/i915: refine qemu south bridge detection'
>
> This patch was previously sent to LKML 25 Jan 2016; and got some
> reviews, but otherwise slipped through the cracks.
>
> ---
> drivers/gpu/drm/bochs/bochs_drv.c | 4 ++--
> drivers/gpu/drm/cirrus/cirrus_drv.c | 5 +++--
> drivers/virtio/virtio_pci_common.c | 2 +-
> include/linux/pci_ids.h | 4 ++++
> sound/pci/intel8x0.c | 4 ++--
> 5 files changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c
> index 7f1a360..b332b4d3 100644
> --- a/drivers/gpu/drm/bochs/bochs_drv.c
> +++ b/drivers/gpu/drm/bochs/bochs_drv.c
> @@ -182,8 +182,8 @@ static const struct pci_device_id bochs_pci_tbl[] = {
> {
> .vendor = 0x1234,
> .device = 0x1111,
> - .subvendor = 0x1af4,
> - .subdevice = 0x1100,
> + .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
> + .subdevice = PCI_SUBDEVICE_ID_QEMU,
> .driver_data = BOCHS_QEMU_STDVGA,
> },
> {
> diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c
> index b1619e2..7bc394e 100644
> --- a/drivers/gpu/drm/cirrus/cirrus_drv.c
> +++ b/drivers/gpu/drm/cirrus/cirrus_drv.c
> @@ -33,8 +33,9 @@ static struct drm_driver driver;
>
> /* only bind to the cirrus chip in qemu */
> static const struct pci_device_id pciidlist[] = {
> - { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
> - 0, 0 },
> + { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
> + PCI_SUBVENDOR_ID_REDHAT_QUMRANET, PCI_SUBDEVICE_ID_QEMU,
> + 0, 0, 0 },
> { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN,
> 0x0001, 0, 0, 0 },
> {0,}
> diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
> index 36205c2..127dfe4 100644
> --- a/drivers/virtio/virtio_pci_common.c
> +++ b/drivers/virtio/virtio_pci_common.c
> @@ -467,7 +467,7 @@ static const struct dev_pm_ops virtio_pci_pm_ops = {
>
> /* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */
> static const struct pci_device_id virtio_pci_id_table[] = {
> - { PCI_DEVICE(0x1af4, PCI_ANY_ID) },
> + { PCI_DEVICE(PCI_VENDOR_ID_REDHAT_QUMRANET, PCI_ANY_ID) },
> { 0 }
> };
>
> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index 37f05cb..6d249d3 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -2506,6 +2506,10 @@
>
> #define PCI_VENDOR_ID_AZWAVE 0x1a3b
>
> +#define PCI_VENDOR_ID_REDHAT_QUMRANET 0x1af4
> +#define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4
> +#define PCI_SUBDEVICE_ID_QEMU 0x1100
> +
> #define PCI_VENDOR_ID_ASMEDIA 0x1b21
>
> #define PCI_VENDOR_ID_CIRCUITCO 0x1cc8
> diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
> index 42bcbac..12c2c18 100644
> --- a/sound/pci/intel8x0.c
> +++ b/sound/pci/intel8x0.c
> @@ -2980,8 +2980,8 @@ static int snd_intel8x0_inside_vm(struct pci_dev *pci)
> goto fini;
>
> /* check for known (emulated) devices */
> - if (pci->subsystem_vendor == 0x1af4 &&
> - pci->subsystem_device == 0x1100) {
> + if (pci->subsystem_vendor == PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
> + pci->subsystem_device == PCI_SUBDEVICE_ID_QEMU) {
> /* KVM emulated sound, PCI SSID: 1af4:1100 */
> msg = "enable KVM";
> } else if (pci->subsystem_vendor == 0x1ab8) {
> --
> 2.3.0
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