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7 Commits

Author SHA1 Message Date
Michael D Kinney
b26f0cf9ee OvmfPkg: Replace BSD License with BSD+Patent License 
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
 2019-04-09 10:58:19 -07:00
Laszlo Ersek
53b55831e0 OvmfPkg/VirtioNetDxe: document Rx/Tx allocs and mappings on Init/Shutdown 
Document the following actions on the

  EfiSimpleNetworkStarted <-> EfiSimpleNetworkInitialized

state transitions:

* from commit 46b11f00ac ("OvmfPkg/VirtioNetDxe: alloc RxBuf using
  AllocateSharedPages()", 2017-09-14):

  VirtioNetInitRx ->
  { VirtIo->AllocateSharedPages, VirtioMapAllBytesInSharedBuffer }

  VirtioNetShutdownRx ->
  { VirtIo->UnmapSharedBuffer, VirtIo->FreeSharedPages }

* from commit 891f016c1b ("OvmfPkg/VirtioNetDxe: dynamically alloc
  transmit header", 2017-09-14):

  VirtioNetInitTx ->
  { VirtIo->AllocateSharedPages, VirtioMapAllBytesInSharedBuffer }

  VirtioNetShutdownTx ->
  { VirtIo->UnmapSharedBuffer, VirtIo->FreeSharedPages }

Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
 2017-09-22 15:01:29 +02:00
Brijesh Singh
76ad23ca82 OvmfPkg/VirtioNetDxe: update TechNotes 
In next patches we will update Virtio transmit to use the device-mapped
address of the caller-supplied packet. The patch documents the new model.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
 2017-09-14 23:54:12 +02:00
Brijesh Singh
46b11f00ac OvmfPkg/VirtioNetDxe: alloc RxBuf using AllocateSharedPages() 
When device is behind the IOMMU, VirtioNetDxe is required to use the
device address in bus master operations. RxBuf is allocated using
AllocatePool() which returns the system physical address.

The patch uses VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages() to allocate
the RxBuf and map with VirtioMapAllBytesInSharedBuffer() so that we can
obtain the device address for RxBuf.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
 2017-09-14 23:54:07 +02:00
Brijesh Singh
940baec09c OvmfPkg/VirtioNetDxe: map VRINGs using VirtioRingMap() 
When device is behind the IOMMU then driver need to pass the device
address when programing the bus master. The patch uses VirtioRingMap() to
map the VRING system physical address[es] to device address[es].

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
 2017-09-14 23:54:05 +02:00
Brijesh Singh
55dd5a673b OvmfPkg/VirtioNetDxe: add helper VirtioNetUninitRing() 
Consolidate the virtio VRING resource cleanup into VirtioNetUninitRing().

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
 2017-09-14 23:53:46 +02:00
Laszlo Ersek
50d4fa86db OvmfPkg: VirtioNetDxe: add technical notes 
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14404 6f19259b-4bc3-4df7-8a09-765794883524
 2013-06-14 07:39:25 +00:00