Hi All, There are bugs in the emulated dp8393x device that can stop packet reception in a Linux/m68k guest (q800 machine).
With a Linux/mips guest (magnum machine), the driver fails to probe the dp8393x device. With a NetBSD/arc 5.1 guest (magnum machine), the bugs in the device can be fatal to the guest kernel. Whilst debugging the device, I found that the receiver algorithm differs from the one described in the National Semiconductor datasheet. This patch series resolves these bugs. Note that the mainline Linux sonic driver also has bugs. I have fixed the bugs that I know of in a series of patches at, https://github.com/fthain/linux/commits/mac68k --- Changed since v1: - Minor revisions as described in commit logs. - Dropped patches 4/10 and 7/10. - Added 5 new patches. Changed since v2: - Minor revisions as described in commit logs. - Dropped patch 13/13. - Added 2 new patches. Finn Thain (14): dp8393x: Mask EOL bit from descriptor addresses dp8393x: Always use 32-bit accesses dp8393x: Clean up endianness hacks dp8393x: Have dp8393x_receive() return the packet size dp8393x: Update LLFA and CRDA registers from rx descriptor dp8393x: Clear RRRA command register bit only when appropriate dp8393x: Implement packet size limit and RBAE interrupt dp8393x: Don't clobber packet checksum dp8393x: Use long-word-aligned RRA pointers in 32-bit mode dp8393x: Pad frames to word or long word boundary dp8393x: Clear descriptor in_use field to release packet dp8393x: Always update RRA pointers and sequence numbers dp8393x: Don't reset Silicon Revision register dp8393x: Don't stop reception upon RBE interrupt assertion hw/net/dp8393x.c | 205 +++++++++++++++++++++++++++++++---------------- 1 file changed, 137 insertions(+), 68 deletions(-) -- 2.24.1
