From: Tina Zhang <tina.zhang@intel.com>
To: intel-gvt-dev@lists.freedesktop.org
Cc: Tina Zhang <tina.zhang@intel.com>,
kraxel@redhat.com, alex.williamson@redhat.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
hang.yuan@intel.com, zhiyuan.lv@intel.com,
Eric Auger <eric.auger@redhat.com>
Subject: [PATCH v5 1/6] vfio: Define device specific irq type capability
Date: Fri, 16 Aug 2019 10:35:23 +0800 [thread overview]
Message-ID: <20190816023528.30210-2-tina.zhang@intel.com> (raw)
In-Reply-To: <20190816023528.30210-1-tina.zhang@intel.com>
Cap the number of irqs with fixed indexes and use capability chains
to chain device specific irqs.
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
include/uapi/linux/vfio.h | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 02bb7ad6e986..d83c9f136a5b 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -444,11 +444,27 @@ struct vfio_irq_info {
#define VFIO_IRQ_INFO_MASKABLE (1 << 1)
#define VFIO_IRQ_INFO_AUTOMASKED (1 << 2)
#define VFIO_IRQ_INFO_NORESIZE (1 << 3)
+#define VFIO_IRQ_INFO_FLAG_CAPS (1 << 4) /* Info supports caps */
__u32 index; /* IRQ index */
__u32 count; /* Number of IRQs within this index */
+ __u32 cap_offset; /* Offset within info struct of first cap */
};
#define VFIO_DEVICE_GET_IRQ_INFO _IO(VFIO_TYPE, VFIO_BASE + 9)
+/*
+ * The irq type capability allows irqs unique to a specific device or
+ * class of devices to be exposed.
+ *
+ * The structures below define version 1 of this capability.
+ */
+#define VFIO_IRQ_INFO_CAP_TYPE 3
+
+struct vfio_irq_info_cap_type {
+ struct vfio_info_cap_header header;
+ __u32 type; /* global per bus driver */
+ __u32 subtype; /* type specific */
+};
+
/**
* VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set)
*
@@ -550,7 +566,8 @@ enum {
VFIO_PCI_MSIX_IRQ_INDEX,
VFIO_PCI_ERR_IRQ_INDEX,
VFIO_PCI_REQ_IRQ_INDEX,
- VFIO_PCI_NUM_IRQS
+ VFIO_PCI_NUM_IRQS = 5 /* Fixed user ABI, IRQ indexes >=5 use */
+ /* device specific cap to define content */
};
/*
--
2.17.1
next prev parent reply other threads:[~2019-08-16 2:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-16 2:35 [PATCH v5 0/6] Deliver vGPU display refresh event to userspace Tina Zhang
2019-08-16 2:35 ` Tina Zhang [this message]
2019-08-16 20:51 ` [PATCH v5 1/6] vfio: Define device specific irq type capability Alex Williamson
2019-08-20 0:56 ` Zhang, Tina
2019-08-16 2:35 ` [PATCH v5 2/6] vfio: Introduce vGPU display irq type Tina Zhang
2019-08-16 20:51 ` Alex Williamson
2019-08-20 2:12 ` Zhang, Tina
2019-08-20 7:20 ` kraxel
2019-08-20 15:03 ` Alex Williamson
2019-08-20 15:32 ` Alex Williamson
2019-08-16 2:35 ` [PATCH v5 3/6] drm/i915/gvt: Register vGPU display event irq Tina Zhang
2019-08-16 2:35 ` [PATCH v5 4/6] drm/i915/gvt: Deliver vGPU refresh event to userspace Tina Zhang
2019-08-26 7:55 ` Zhenyu Wang
2019-08-28 1:49 ` Tian, Kevin
2019-08-28 6:59 ` Zhang, Tina
2019-08-28 7:10 ` Tian, Kevin
2019-08-28 7:39 ` Zhang, Tina
2019-08-16 2:35 ` [PATCH v5 5/6] drm/i915/gvt: Deliver async primary plane page flip events at vblank Tina Zhang
2019-08-16 2:35 ` [PATCH v5 6/6] drm/i915/gvt: Add cursor plane reg update trap emulation handler Tina Zhang
2019-09-03 1:26 ` [PATCH v5 0/6] Deliver vGPU display refresh event to userspace Zhang, Tina
2019-09-03 7:43 ` Tian, Kevin
2019-09-05 7:48 ` kraxel
2019-09-17 9:27 ` Zhang, Tina
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190816023528.30210-2-tina.zhang@intel.com \
--to=tina.zhang@intel.com \
--cc=alex.williamson@redhat.com \
--cc=eric.auger@redhat.com \
--cc=hang.yuan@intel.com \
--cc=intel-gvt-dev@lists.freedesktop.org \
--cc=kraxel@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=zhiyuan.lv@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).