From: Rusty Russell <rusty@rustcorp.com.au>
To: "lkml" <linux-kernel@vger.kernel.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Subject: [PATCH 1/5] virtio: define VIRTIO_PCI_CAP_PCI_CFG in header.
Date: Fri, 6 Feb 2015 15:36:52 +1030 [thread overview]
Message-ID: <1423199216-2094-2-git-send-email-rusty@rustcorp.com.au> (raw)
In-Reply-To: <1423199216-2094-1-git-send-email-rusty@rustcorp.com.au>
This provides backdoor access to the device MMIOs, and every device should
have one. From the virtio 1.0 spec (CS03):
4.1.4.7.1 Device Requirements: PCI configuration access capability
The device MUST present at least one VIRTIO_PCI_CAP_PCI_CFG capability.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
include/uapi/linux/virtio_pci.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index 3b7e4d2765fb..75301468359f 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -109,8 +109,10 @@
#define VIRTIO_PCI_CAP_NOTIFY_CFG 2
/* ISR access */
#define VIRTIO_PCI_CAP_ISR_CFG 3
-/* Device specific confiuration */
+/* Device specific configuration */
#define VIRTIO_PCI_CAP_DEVICE_CFG 4
+/* PCI configuration access */
+#define VIRTIO_PCI_CAP_PCI_CFG 5
/* This is the PCI capability header: */
struct virtio_pci_cap {
--
2.1.0
next prev parent reply other threads:[~2015-02-06 5:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-06 5:06 [PATCH 0/5] virtio 1.0 cleanups and one fix Rusty Russell
2015-02-06 5:06 ` Rusty Russell [this message]
2015-02-08 11:00 ` [PATCH 1/5] virtio: define VIRTIO_PCI_CAP_PCI_CFG in header Michael S. Tsirkin
2015-02-06 5:06 ` [PATCH 2/5] virtio: Don't expose legacy block features when VIRTIO_BLK_NO_LEGACY defined Rusty Russell
2015-02-08 11:01 ` Michael S. Tsirkin
2015-02-06 5:06 ` [PATCH 3/5] virtio: Don't expose legacy net features when VIRTIO_NET_NO_LEGACY defined Rusty Russell
2015-02-08 10:59 ` Michael S. Tsirkin
2015-02-08 23:50 ` Rusty Russell
2015-02-11 0:06 ` Rusty Russell
2015-02-16 5:14 ` Michael S. Tsirkin
2015-02-16 6:09 ` Rusty Russell
2015-02-14 20:43 ` Michael S. Tsirkin
2015-02-16 3:29 ` Rusty Russell
2015-02-06 5:06 ` [PATCH 4/5] virtio: Don't expose legacy config features when VIRTIO_CONFIG_NO_LEGACY defined Rusty Russell
2015-02-08 11:03 ` Michael S. Tsirkin
2015-02-06 5:06 ` [PATCH 5/5] virtio: don't require a config space on the console device Rusty Russell
2015-02-08 11:03 ` Michael S. Tsirkin
2015-02-08 23:56 ` Rusty Russell
2015-02-11 11:16 ` Amit Shah
2015-02-08 9:52 ` [PATCH 0/5] virtio 1.0 cleanups and one fix Michael S. Tsirkin
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