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iflib.c: Deactivate use of ifc_cpus

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- cpusets and SMP are currently not supported in libbsd for RTEMS
- Disable the ifc_cpus context variable and replace its usage,
essentially hard-coding for cpu 0
This commit is contained in:
Jan Sommer 2020-08-14 21:57:52 +02:00 committed by Chris Johns
parent 5cfbb629b6
commit 514ffab353
2 changed files with 28 additions and 0 deletions
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6
freebsd/sys/dev/e1000/if_em.c
View File

@ -1837,8 +1837,14 @@ em_if_update_admin_status(if_ctx_t ctx)
if (adapter->hw.mac.type < em_mac_min)
lem_smartspeed(adapter);
#ifdef __rtems__
else if (hw->mac.type == e1000_82574 &&
adapter->intr_type == IFLIB_INTR_MSIX)
E1000_WRITE_REG(&adapter->hw, E1000_IMS, EM_MSIX_LINK | E1000_IMS_LSC);
#else /* __rtems__ */
E1000_WRITE_REG(&adapter->hw, E1000_IMS, EM_MSIX_LINK | E1000_IMS_LSC);
#endif /* __rtems__ */
}
static void

22
freebsd/sys/net/iflib.c
View File

@ -159,7 +159,9 @@ struct iflib_ctx {
device_t ifc_dev;
if_t ifc_ifp;
#ifndef __rtems__
cpuset_t ifc_cpus;
#endif /* __rtems__ */
if_shared_ctx_t ifc_sctx;
struct if_softc_ctx ifc_softc_ctx;
@ -4498,6 +4500,7 @@ get_ctx_core_offset(if_ctx_t ctx)
qc = max(scctx->isc_ntxqsets, scctx->isc_nrxqsets);
mtx_lock(&cpu_offset_mtx);
#ifndef __rtems__
SLIST_FOREACH(op, &cpu_offsets, entries) {
if (CPU_CMP(&ctx->ifc_cpus, &op->set) == 0) {
ret = op->offset;
@ -4507,6 +4510,7 @@ get_ctx_core_offset(if_ctx_t ctx)
break;
}
}
#endif /* __rtems__ */
if (ret == CORE_OFFSET_UNSPECIFIED) {
ret = 0;
op = malloc(sizeof(struct cpu_offset), M_IFLIB,
@ -4517,7 +4521,9 @@ get_ctx_core_offset(if_ctx_t ctx)
} else {
op->offset = qc;
op->refcount = 1;
#ifndef __rtems__
CPU_COPY(&ctx->ifc_cpus, &op->set);
#endif /* __rtems__ */
SLIST_INSERT_HEAD(&cpu_offsets, op, entries);
}
}
@ -4533,7 +4539,11 @@ unref_ctx_core_offset(if_ctx_t ctx)
mtx_lock(&cpu_offset_mtx);
SLIST_FOREACH_SAFE(op, &cpu_offsets, entries, top) {
#ifndef __rtems__
if (CPU_CMP(&ctx->ifc_cpus, &op->set) == 0) {
#else /* __rtems__ */
{
#endif /* __rtems__ */
MPASS(op->refcount > 0);
op->refcount--;
if (op->refcount == 0) {
@ -4647,12 +4657,14 @@ iflib_device_register(device_t dev, void *sc, if_shared_ctx_t sctx, if_ctx_t *ct
taskqgroup_attach(qgroup_if_config_tqg, &ctx->ifc_admin_task, ctx,
NULL, NULL, "admin");
#ifndef __rtems__
/* Set up cpu set. If it fails, use the set of all CPUs. */
if (bus_get_cpus(dev, INTR_CPUS, sizeof(ctx->ifc_cpus), &ctx->ifc_cpus) != 0) {
device_printf(dev, "Unable to fetch CPU list\n");
CPU_COPY(&all_cpus, &ctx->ifc_cpus);
}
MPASS(CPU_COUNT(&ctx->ifc_cpus) > 0);
#endif /* __rtems__ */
/*
** Now set up MSI or MSI-X, should return us the number of supported
@ -5484,7 +5496,9 @@ iflib_queues_alloc(if_ctx_t ctx)
txq->ift_br_offset = 0;
}
/* XXX fix this */
#ifndef __rtems__
txq->ift_timer.c_cpu = cpu;
#endif /* __rtems__ */
if (iflib_txsd_alloc(txq)) {
device_printf(dev, "Critical Failure setting up TX buffers\n");
@ -6291,11 +6305,19 @@ iflib_msix_init(if_ctx_t ctx)
#else
queues = queuemsgs;
#endif
#ifndef __rtems__
queues = imin(CPU_COUNT(&ctx->ifc_cpus), queues);
#else /* __rtems__ */
queues = imin(1, queues);
#endif /* __rtems__ */
if (bootverbose)
device_printf(dev,
"intr CPUs: %d queue msgs: %d admincnt: %d\n",
#ifndef __rtems__
CPU_COUNT(&ctx->ifc_cpus), queuemsgs, admincnt);
#else /* __rtems__ */
1, queuemsgs, admincnt);
#endif /* __rtems__ */
#ifdef RSS
/* If we're doing RSS, clamp at the number of RSS buckets */
if (queues > rss_getnumbuckets())