diff options
| author | David Arinzon <darinzon@amazon.com> | 2024-01-30 12:53:47 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-01 15:22:12 +0300 |
| commit | 06a96fe6f9f02f1205774b60c2f42f09a6832f31 (patch) | |
| tree | 918f5e097fdbbc8a943b86b326062c2000d9cba0 /drivers/net/ethernet/amazon/ena/ena_com.c | |
| parent | 50d7a2660579889fba28b7e4543d4ce85aa2311b (diff) | |
| download | linux-06a96fe6f9f02f1205774b60c2f42f09a6832f31.tar.xz | |
net: ena: Remove CQ tail pointer update
The functionality was added to allow the drivers to create an
SQ and CQ of different sizes.
When the RX/TX SQ and CQ have the same size, such update isn't
necessary as the device can safely assume it doesn't override
unprocessed completions. However, if the SQ is larger than the CQ,
the device might "have" more completions it wants to update about
than there's room in the CQ.
There's no support for different SQ and CQ sizes, therefore,
removing the API and its usage.
'____cacheline_aligned' compiler attribute was added to
'struct ena_com_io_cq' to ensure that the removal of the
'cq_head_db_reg' field doesn't change the cache-line layout
of this struct.
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_com.c')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_com.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c index 9a8a43b78967..675ee728fe52 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_com.c @@ -1427,11 +1427,6 @@ int ena_com_create_io_cq(struct ena_com_dev *ena_dev, io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + cmd_completion.cq_interrupt_unmask_register_offset); - if (cmd_completion.cq_head_db_register_offset) - io_cq->cq_head_db_reg = - (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + - cmd_completion.cq_head_db_register_offset); - if (cmd_completion.numa_node_register_offset) io_cq->numa_node_cfg_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar + |