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if_ffec: Align send buffers to cache if necessary.

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This commit is contained in:
Christian Mauderer 2020-05-27 13:49:08 +02:00
parent 7e453ad5c9
commit 97dc907946
1 changed files with 10 additions and 2 deletions
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12
freebsd/sys/dev/ffec/if_ffec.c
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@ -714,8 +714,16 @@ ffec_encap(struct ifnet *ifp, struct ffec_softc *sc, struct mbuf *m0,
tx_desc->buf_paddr = segs[i].ds_addr;
tx_desc->flags2 = flags2;
#ifdef __rtems__
rtems_cache_flush_multiple_data_lines((void *)segs[i].ds_addr,
segs[i].ds_len);
uintptr_t addr_flush = (uintptr_t)segs[i].ds_addr;
size_t len_flush = segs[i].ds_len;
#ifdef CPU_CACHE_LINE_BYTES
/* mbufs should be cache line aligned. So we can just round. */
addr_flush = addr_flush & ~(CPU_CACHE_LINE_BYTES - 1);
len_flush = (len_flush + (CPU_CACHE_LINE_BYTES - 1)) &
~(CPU_CACHE_LINE_BYTES - 1);
#endif
rtems_cache_flush_multiple_data_lines((void*)addr_flush,
len_flush);
#endif /* __rtems__ */
if (i == 0) {