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cxgbe(4): Get Linux cxgb4vf working in bhyve VMs with VFs passed

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through.

cxgb4vf doesn't own the buffer size list but still expects the first two
entries to be 4K and some power of 2 respectively.  The BSD cxgbe
doesn't care where its preferred buffer sizes are as long as they're in
the list somewhere, so just move its entries towards the end as a
workaround.

MFC after:	1 month
Sponsored by:	Chelsio Communicatons
This commit is contained in:
Navdeep Parhar 2018-12-06 21:33:08 +00:00
parent 407345752d
commit 9b11a65d1c
1 changed files with 3 additions and 1 deletions
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4
sys/dev/cxgbe/t4_sge.c
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@ -701,8 +701,10 @@ t4_tweak_chip_settings(struct adapter *sc)
KASSERT(nitems(sge_flbuf_sizes) <= SGE_FLBUF_SIZES,
("%s: hw buffer size table too big", __func__));
t4_write_reg(sc, A_SGE_FL_BUFFER_SIZE0, 4096);
t4_write_reg(sc, A_SGE_FL_BUFFER_SIZE1, 65536);
for (i = 0; i < min(nitems(sge_flbuf_sizes), SGE_FLBUF_SIZES); i++) {
t4_write_reg(sc, A_SGE_FL_BUFFER_SIZE0 + (4 * i),
t4_write_reg(sc, A_SGE_FL_BUFFER_SIZE15 - (4 * i),
sge_flbuf_sizes[i]);
}