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| author | Ahmad Fatoum <ahmad@a3f.at> | 2021-02-28 20:08:32 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-03-04 12:11:24 +0100 |
| commit | 96c3abf61567e9e3e031591cff2bb9738feedbfc (patch) | |
| tree | 5c41fe699187c56132865e5e42d39f72dbaabab2 /include | |
| parent | 3f975f810bd34c56cfafd88d1d4e6eb669e74561 (diff) | |
| download | barebox-96c3abf61567e9e3e031591cff2bb9738feedbfc.tar.gz barebox-96c3abf61567e9e3e031591cff2bb9738feedbfc.tar.xz | |
virtio: ring: fix erroneous behavior around caches and MMU
The U-Boot code assumes 1:1 phys2virt mapping and either disabled
caches or a lot of luck. Use the DMA API to get appropriate addresses
for DMA and use coherent/streaming DMA mappings where appropriate.
This is required for proper operation on MIPS.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/virtio_ring.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h index 3c11592b09..c349af90ce 100644 --- a/include/linux/virtio_ring.h +++ b/include/linux/virtio_ring.h @@ -108,6 +108,8 @@ struct virtqueue { u16 last_used_idx; u16 avail_flags_shadow; u16 avail_idx_shadow; + dma_addr_t queue_dma_addr; + size_t queue_size_in_bytes; }; /* |