diff options
| author | Jack Morgenstein <jackm@mellanox.co.il> | 2006-04-10 09:43:47 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-04-10 09:43:47 -0700 |
| commit | bf6a9e31cfa768ce0a8e18474b3ca808641d9243 (patch) | |
| tree | a7ebdb5a10e528959ca1497e222975d3087a5eef /drivers/infiniband/core | |
| parent | d2e0655ede1d91c3a586455d03a4a2d57e659830 (diff) | |
IB: simplify static rate encoding
Push translation of static rate to HCA format into low-level drivers,
where it belongs. For static rate encoding, use encoding of rate
field from IB standard PathRecord, with addition of value 0, for
backwards compatibility with current usage. The changes are:
- Add enum ib_rate to midlayer includes.
- Get rid of static rate translation in IPoIB; just use static rate
directly from Path and MulticastGroup records.
- Update mthca driver to translate absolute static rate into the
format used by hardware. This also fixes mthca's static rate
handling for HCAs that are capable of 4X DDR.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index cae0845f472..b78e7dc6933 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -45,6 +45,40 @@ #include <rdma/ib_verbs.h> #include <rdma/ib_cache.h> +int ib_rate_to_mult(enum ib_rate rate) +{ + switch (rate) { + case IB_RATE_2_5_GBPS: return 1; + case IB_RATE_5_GBPS: return 2; + case IB_RATE_10_GBPS: return 4; + case IB_RATE_20_GBPS: return 8; + case IB_RATE_30_GBPS: return 12; + case IB_RATE_40_GBPS: return 16; + case IB_RATE_60_GBPS: return 24; + case IB_RATE_80_GBPS: return 32; + case IB_RATE_120_GBPS: return 48; + default: return -1; + } +} +EXPORT_SYMBOL(ib_rate_to_mult); + +enum ib_rate mult_to_ib_rate(int mult) +{ + switch (mult) { + case 1: return IB_RATE_2_5_GBPS; + case 2: return IB_RATE_5_GBPS; + case 4: return IB_RATE_10_GBPS; + case 8: return IB_RATE_20_GBPS; + case 12: return IB_RATE_30_GBPS; + case 16: return IB_RATE_40_GBPS; + case 24: return IB_RATE_60_GBPS; + case 32: return IB_RATE_80_GBPS; + case 48: return IB_RATE_120_GBPS; + default: return IB_RATE_PORT_CURRENT; + } +} +EXPORT_SYMBOL(mult_to_ib_rate); + /* Protection domains */ struct ib_pd *ib_alloc_pd(struct ib_device *device) |