summaryrefslogtreecommitdiff
path: root/drivers/misc/mic/host/Makefile
diff options
context:
space:
mode:
authorAshutosh Dixit <ashutosh.dixit@intel.com>2013-09-06 03:42:18 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-27 00:50:56 +0400
commitf69bcbf3b4c4b333dcd7a48eaf868bf0c88edab5 (patch)
tree82edf895c9db652788945faafb8d4301f79cb5f8 /drivers/misc/mic/host/Makefile
parentaa27badd8972adb731f05d49ab74ec63e0826935 (diff)
downloadlinux-f69bcbf3b4c4b333dcd7a48eaf868bf0c88edab5.tar.xz
Intel MIC Host Driver Changes for Virtio Devices.
This patch introduces the host "Virtio over PCIe" interface for Intel MIC. It allows creating user space backends on the host and instantiating virtio devices for them on the Intel MIC card. It uses the existing VRINGH infrastructure in the kernel to access virtio rings from the host. A character device per MIC is exposed with IOCTL, mmap and poll callbacks. This allows the user space backend to: (a) add/remove a virtio device via a device page. (b) map (R/O) virtio rings and device page to user space. (c) poll for availability of data. (d) copy a descriptor or entire descriptor chain to/from the card. (e) modify virtio configuration. (f) handle virtio device reset. The buffers are copied over using CPU copies for this initial patch and host initiated MIC DMA support is planned for future patches. The avail and desc virtio rings are in host memory and the used ring is in card memory to maximize writes across PCIe for performance. Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mic/host/Makefile')
-rw-r--r--drivers/misc/mic/host/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/mic/host/Makefile b/drivers/misc/mic/host/Makefile
index a375dd32c3e2..c2197f999394 100644
--- a/drivers/misc/mic/host/Makefile
+++ b/drivers/misc/mic/host/Makefile
@@ -10,3 +10,5 @@ mic_host-objs += mic_smpt.o
mic_host-objs += mic_intr.o
mic_host-objs += mic_boot.o
mic_host-objs += mic_debugfs.o
+mic_host-objs += mic_fops.o
+mic_host-objs += mic_virtio.o