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From: Brijesh Singh <brijesh.singh@amd.com>
To: edk2-devel@lists.01.org
Cc: Brijesh Singh <brijesh.singh@amd.com>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Jordan Justen <jordan.l.justen@intel.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Laszlo Ersek <lersek@redhat.com>
Subject: [PATCH v3 08/23] OvmfPkg/Virtio10Dxe: add the RingBaseShift offset
Date: Wed, 23 Aug 2017 08:22:32 -0400	[thread overview]
Message-ID: <1503490967-5559-9-git-send-email-brijesh.singh@amd.com> (raw)
In-Reply-To: <1503490967-5559-1-git-send-email-brijesh.singh@amd.com>

virtio drivers use VIRTIO_DEVICE_PROTOCOL.MapSharedBuffer() to map the
ring buffer host address to a device address. If an IOMMU is present then
RingBaseShift contains the offset from the host address.

Suggested-by: Laszlo Ersek <lersek@redhat.com>
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>
---
 OvmfPkg/Virtio10Dxe/Virtio10.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/OvmfPkg/Virtio10Dxe/Virtio10.c b/OvmfPkg/Virtio10Dxe/Virtio10.c
index ef9a00710668..e9b50b6e437b 100644
--- a/OvmfPkg/Virtio10Dxe/Virtio10.c
+++ b/OvmfPkg/Virtio10Dxe/Virtio10.c
@@ -498,11 +498,10 @@ Virtio10SetQueueAddress (
   UINT64         Address;
   UINT16         Enable;
 
-  ASSERT (RingBaseShift == 0);
-
   Dev = VIRTIO_1_0_FROM_VIRTIO_DEVICE (This);
 
   Address = (UINTN)Ring->Desc;
+  Address += RingBaseShift;
   Status = Virtio10Transfer (Dev->PciIo, &Dev->CommonConfig, TRUE,
              OFFSET_OF (VIRTIO_PCI_COMMON_CFG, QueueDesc),
              sizeof Address, &Address);
@@ -511,6 +510,7 @@ Virtio10SetQueueAddress (
   }
 
   Address = (UINTN)Ring->Avail.Flags;
+  Address += RingBaseShift;
   Status = Virtio10Transfer (Dev->PciIo, &Dev->CommonConfig, TRUE,
              OFFSET_OF (VIRTIO_PCI_COMMON_CFG, QueueAvail),
              sizeof Address, &Address);
@@ -519,6 +519,7 @@ Virtio10SetQueueAddress (
   }
 
   Address = (UINTN)Ring->Used.Flags;
+  Address += RingBaseShift;
   Status = Virtio10Transfer (Dev->PciIo, &Dev->CommonConfig, TRUE,
              OFFSET_OF (VIRTIO_PCI_COMMON_CFG, QueueUsed),
              sizeof Address, &Address);
-- 
2.7.4



  parent reply	other threads:[~2017-08-23 12:20 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-23 12:22 [PATCH v3 00/21] OvmfPkg/Virtio: introduce IOMMU-like member functions Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 01/23] OvmfPkg: introduce IOMMU-like member functions to VIRTIO_DEVICE_PROTOCOL Brijesh Singh
2017-08-23 19:04   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 02/23] OvmfPkg/Virtio10Dxe: implement IOMMU-like member functions Brijesh Singh
2017-08-23 19:13   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 03/23] OvmfPkg/VirtioPciDeviceDxe: " Brijesh Singh
2017-08-23 19:16   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 04/23] OvmfPkg/VirtioMmioDeviceLib: " Brijesh Singh
2017-08-23 19:26   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 05/23] OvmfPkg/VirtioLib: add VirtioMapAllBytesInSharedBuffer() helper function Brijesh Singh
2017-08-23 19:45   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 06/23] OvmfPkg/VirtioLib: take VirtIo instance in VirtioRingInit/VirtioRingUninit Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 07/23] OvmfPkg/Virtio: take RingBaseShift in SetQueueAddress() Brijesh Singh
2017-08-23 20:41   ` Laszlo Ersek
2017-08-23 20:43     ` Laszlo Ersek
2017-08-23 20:50       ` Brijesh Singh
2017-08-23 12:22 ` Brijesh Singh [this message]
2017-08-23 20:51   ` [PATCH v3 08/23] OvmfPkg/Virtio10Dxe: add the RingBaseShift offset Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 09/23] OvmfPkg/VirtioLib: add function to map VRING Brijesh Singh
2017-08-23 20:10   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 10/23] OvmfPkg/VirtioLib: alloc VRING buffer with AllocateSharedPages() Brijesh Singh
2017-08-23 21:18   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 11/23] OvmfPkg/VirtioLib: change the parameter of VirtioAppendDesc() to UINT64 Brijesh Singh
2017-08-23 21:38   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 12/23] OvmfPkg/VirtioRngDxe: map host address to device address Brijesh Singh
2017-08-23 22:54   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 13/23] OvmfPkg/VirtioBlkDxe: " Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 14/23] OvmfPkg/VirtioScsiDxe: " Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 15/23] OvmfPkg/VirtioNetDxe: alloc Tx and Rx rings using AllocateSharedPage() Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 16/23] OvmfPkg/VirtioNetDxe: alloc RxBuf using AllocateSharedPages() Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 17/23] OvmfPkg/VirtioNetDxe: dynamically alloc transmit header Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 18/23] OvmfPkg/VirtioNetDxe: map transmit buffer host address to device address Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 19/23] OvmfPkg/Virtio10: define VIRITO_F_IOMMU_PLATFORM feature bit Brijesh Singh
2017-08-23 23:04   ` Laszlo Ersek
2017-08-23 12:22 ` [PATCH v3 20/23] OvmfPkg/VirtioRngDxe: negotiate VIRITO_F_IOMMU_PLATFORM Brijesh Singh
2017-08-23 23:21   ` Laszlo Ersek
2017-08-23 23:24     ` Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 21/23] OvmfPkg/VirtioBlkDxe: " Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 22/23] OvmfPkg/VirtioScsiDxe: " Brijesh Singh
2017-08-23 12:22 ` [PATCH v3 23/23] OvmfPkg/VirtioNetDxe: " Brijesh Singh
2017-08-24  0:26 ` [PATCH v3 00/21] OvmfPkg/Virtio: introduce IOMMU-like member functions Laszlo Ersek
2017-08-24  0:54   ` Brijesh Singh
2017-08-24  1:22     ` Laszlo Ersek
2017-08-24  2:06       ` Brijesh Singh
2017-08-24 10:07         ` Laszlo Ersek
2017-08-25  8:58   ` Laszlo Ersek

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