X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OvmfPkg%2FVirtioScsiDxe%2FVirtioScsi.c;h=a983b3df7b9caf2d1490af8ec6b0dee7cfc45129;hp=162577bcb9611c7b8610d0c5de8ec6de72ef8524;hb=53a4c6047f3ce2ece7bb8db5b9815a1c9227dddb;hpb=07af4eee931210bad04b98d37a35bd0f61ba6bd3

diff --git a/OvmfPkg/VirtioScsiDxe/VirtioScsi.c b/OvmfPkg/VirtioScsiDxe/VirtioScsi.c
index 162577bcb9..a983b3df7b 100644
--- a/OvmfPkg/VirtioScsiDxe/VirtioScsi.c
+++ b/OvmfPkg/VirtioScsiDxe/VirtioScsi.c
@@ -27,6 +27,7 @@
 
   Copyright (C) 2012, Red Hat, Inc.
   Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2017, AMD Inc, All rights reserved.<BR>
 
   This program and the accompanying materials are licensed and made available
   under the terms and conditions of the BSD License which accompanies this
@@ -800,6 +801,19 @@ VirtioScsiInit (
     goto Failed;
   }
 
+  Features &= VIRTIO_SCSI_F_INOUT | VIRTIO_F_VERSION_1;
+
+  //
+  // In virtio-1.0, feature negotiation is expected to complete before queue
+  // discovery, and the device can also reject the selected set of features.
+  //
+  if (Dev->VirtIo->Revision >= VIRTIO_SPEC_REVISION (1, 0, 0)) {
+    Status = Virtio10WriteFeatures (Dev->VirtIo, Features, &NextDevStat);
+    if (EFI_ERROR (Status)) {
+      goto Failed;
+    }
+  }
+
   //
   // step 4b -- allocate request virtqueue
   //
@@ -819,7 +833,7 @@ VirtioScsiInit (
     goto Failed;
   }
 
-  Status = VirtioRingInit (QueueSize, &Dev->Ring);
+  Status = VirtioRingInit (Dev->VirtIo, QueueSize, &Dev->Ring);
   if (EFI_ERROR (Status)) {
     goto Failed;
   }
@@ -841,20 +855,20 @@ VirtioScsiInit (
   //
   // step 4c -- Report GPFN (guest-physical frame number) of queue.
   //
-  Status = Dev->VirtIo->SetQueueAddress (Dev->VirtIo, &Dev->Ring);
+  Status = Dev->VirtIo->SetQueueAddress (Dev->VirtIo, &Dev->Ring, 0);
   if (EFI_ERROR (Status)) {
     goto ReleaseQueue;
   }
 
   //
-  // step 5 -- Report understood features and guest-tuneables. We want none of
-  // the known (or unknown) VIRTIO_SCSI_F_* or VIRTIO_F_* capabilities (see
-  // virtio-0.9.5, Appendices B and I), except bidirectional transfers.
+  // step 5 -- Report understood features and guest-tuneables.
   //
-  Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo,
-      Features & VIRTIO_SCSI_F_INOUT);
-  if (EFI_ERROR (Status)) {
-    goto ReleaseQueue;
+  if (Dev->VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) {
+    Features &= ~(UINT64)VIRTIO_F_VERSION_1;
+    Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo, Features);
+    if (EFI_ERROR (Status)) {
+      goto ReleaseQueue;
+    }
   }
 
   //
@@ -913,7 +927,7 @@ VirtioScsiInit (
   return EFI_SUCCESS;
 
 ReleaseQueue:
-  VirtioRingUninit (&Dev->Ring);
+  VirtioRingUninit (Dev->VirtIo, &Dev->Ring);
 
 Failed:
   //
@@ -951,7 +965,7 @@ VirtioScsiUninit (
   Dev->MaxLun         = 0;
   Dev->MaxSectors     = 0;
 
-  VirtioRingUninit (&Dev->Ring);
+  VirtioRingUninit (Dev->VirtIo, &Dev->Ring);
 
   SetMem (&Dev->PassThru,     sizeof Dev->PassThru,     0x00);
   SetMem (&Dev->PassThruMode, sizeof Dev->PassThruMode, 0x00);