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sfc: set interrupt moderation via MCDI

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SFN8000-series NICs require a new method of setting interrupt moderation,
via MCDI. This is indicated by a workaround flag. This new MCDI command
takes an explicit time value rather than a number of ticks. It therefore
makes sense to also store the moderation values in terms of time, since
that is what the ethtool interface is interested in.

Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bert Kenward
2016-08-11 13:02:09 +01:00
committed by David S. Miller
parent a995560a27
commit 539de7c524
9 changed files with 103 additions and 62 deletions
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2
drivers/net/ethernet/sfc/nic.h
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@@ -507,6 +507,7 @@ enum {
* @stats: Hardware statistics
* @workaround_35388: Flag: firmware supports workaround for bug 35388
* @workaround_26807: Flag: firmware supports workaround for bug 26807
* @workaround_61265: Flag: firmware supports workaround for bug 61265
* @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated
* after MC reboot
* @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
@@ -542,6 +543,7 @@ struct efx_ef10_nic_data {
u64 stats[EF10_STAT_COUNT];
bool workaround_35388;
bool workaround_26807;
bool workaround_61265;
bool must_check_datapath_caps;
u32 datapath_caps;
u32 datapath_caps2;