void x86_send_ipi(struct cpu_info *ci, int ipimask) { x86_atomic_setbits_u32(&ci->ci_ipis, ipimask); /* Don't send IPI to cpu which isn't (yet) running. */ if (!(ci->ci_flags & CPUF_RUNNING)) return; x86_ipi(LAPIC_IPI_VECTOR, ci->ci_apicid, LAPIC_DLMODE_FIXED); }
void x86_broadcast_ipi(int ipimask) { struct cpu_info *ci, *self = curcpu(); int count = 0; CPU_INFO_ITERATOR cii; CPU_INFO_FOREACH(cii, ci) { if (ci == self) continue; if ((ci->ci_flags & CPUF_RUNNING) == 0) continue; x86_atomic_setbits_u32(&ci->ci_ipis, ipimask); count++; } if (!count) return; x86_ipi(LAPIC_IPI_VECTOR, LAPIC_DEST_ALLEXCL, LAPIC_DLMODE_FIXED); }
int x86_send_ipi(struct cpu_info *ci, int ipimask) { int ret; x86_atomic_setbits_u32(&ci->ci_ipis, ipimask); /* Don't send IPI to cpu which isn't (yet) running. */ if (!(ci->ci_flags & CPUF_RUNNING)) return ENOENT; ret = x86_ipi(LAPIC_IPI_VECTOR, ci->ci_apicid, LAPIC_DLMODE_FIXED); if (ret != 0) { printf("ipi of %x from %s to %s failed\n", ipimask, curcpu()->ci_dev->dv_xname, ci->ci_dev->dv_xname); } return ret; }