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-rw-r--r--virtio-v1.0-wd01-part1-specification.txt17
1 files changed, 15 insertions, 2 deletions
diff --git a/virtio-v1.0-wd01-part1-specification.txt b/virtio-v1.0-wd01-part1-specification.txt
index f5f552a..3be1bef 100644
--- a/virtio-v1.0-wd01-part1-specification.txt
+++ b/virtio-v1.0-wd01-part1-specification.txt
@@ -1525,8 +1525,10 @@ configuration space. The following list presents their layout:
flags.
Writing non-zero values to this register sets the status flags,
indicating the Guest progress. Writing zero (0x0) to this
- register triggers a device reset.
- Also see "2.2.1. Device Initialization".
+ register triggers a device reset, including clearing all
+ bits in the InterruptStatus register and ready bits in the
+ QueueReady register for all queues in the device.
+ See also p. 2.3.2.3.1. "Device Initialization".
* 0x080 | W | QueueDescLow
0x084 | W | QueueDescHigh
@@ -1590,6 +1592,9 @@ If both values are valid, it must read the DeviceID register
and if its value is zero (0x0) must abort initialization and
must not access any other register.
+Further initialization must follow the procedure described in
+p. 2.2.1. "Device Initialization".
+
2.3.2.3.2. Virtqueue Configuration
----------------------------------
@@ -1732,6 +1737,14 @@ nor behaviour:
* 0x064 | W | InterruptACK
* 0x070 | RW | Status
+ Device status.
+ Reading from this register returns the current device status
+ flags.
+ Writing non-zero values to this register sets the status flags,
+ indicating the Guest progress. Writing zero (0x0) to this
+ register triggers a device reset. This should include
+ setting QueuePFN to zero (0x0) for all queues in the device.
+ Also see "2.2.1. Device Initialization".
* 0x100+ | RW | Config