Date: Wed, 1 Apr 2020 15:59:26 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r359516 - stable/12/sys/x86/x86 Message-ID: <202004011559.031FxQLs098271@repo.freebsd.org>
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Author: kib Date: Wed Apr 1 15:59:26 2020 New Revision: 359516 URL: https://svnweb.freebsd.org/changeset/base/359516 Log: MFC r359092: Stop (trying to) renumber io apics. Modified: stable/12/sys/x86/x86/io_apic.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/x86/x86/io_apic.c ============================================================================== --- stable/12/sys/x86/x86/io_apic.c Wed Apr 1 15:57:14 2020 (r359515) +++ stable/12/sys/x86/x86/io_apic.c Wed Apr 1 15:59:26 2020 (r359516) @@ -95,7 +95,8 @@ struct ioapic_intsrc { struct ioapic { struct pic io_pic; u_int io_id:8; /* logical ID */ - u_int io_apic_id:8; + u_int io_apic_id:8; /* Id as enumerated by MADT */ + u_int io_hw_apic_id:8; /* Content of APIC ID register */ u_int io_intbase:8; /* System Interrupt base */ u_int io_numintr:8; u_int io_haseoi:1; @@ -635,15 +636,12 @@ ioapic_create(vm_paddr_t addr, int32_t apic_id, int in io->pci_wnd = NULL; mtx_lock_spin(&icu_lock); io->io_id = next_id++; - io->io_apic_id = ioapic_read(apic, IOAPIC_ID) >> APIC_ID_SHIFT; - if (apic_id != -1 && io->io_apic_id != apic_id) { - ioapic_write(apic, IOAPIC_ID, apic_id << APIC_ID_SHIFT); - mtx_unlock_spin(&icu_lock); - io->io_apic_id = apic_id; - printf("ioapic%u: Changing APIC ID to %d\n", io->io_id, - apic_id); - } else - mtx_unlock_spin(&icu_lock); + io->io_hw_apic_id = ioapic_read(apic, IOAPIC_ID) >> APIC_ID_SHIFT; + io->io_apic_id = apic_id == -1 ? io->io_hw_apic_id : apic_id; + mtx_unlock_spin(&icu_lock); + if (io->io_hw_apic_id != apic_id) + printf("ioapic%u: MADT APIC ID %d != hw id %d\n", io->io_id, + apic_id, io->io_hw_apic_id); if (intbase == -1) { intbase = next_ioapic_base; printf("ioapic%u: Assuming intbase of %d\n", io->io_id, @@ -1018,14 +1016,14 @@ ioapic_pci_attach(device_t dev) } /* Then by apic id */ STAILQ_FOREACH(io, &ioapic_list, io_next) { - if (io->io_apic_id == apic_id) + if (io->io_hw_apic_id == apic_id) goto found; } mtx_unlock_spin(&icu_lock); if (bootverbose) device_printf(dev, - "cannot match pci bar apic id %d against MADT\n", - apic_id); + "cannot match pci bar apic id %d against MADT, BAR0 %#jx\n", + apic_id, (uintmax_t)rman_get_start(res)); fail: bus_release_resource(dev, SYS_RES_MEMORY, rid, res); return (ENXIO); @@ -1038,13 +1036,13 @@ found: io->pci_dev = dev; io->pci_wnd = res; if (bootverbose && (io->io_paddr != (vm_paddr_t)rman_get_start(res) || - io->io_apic_id != apic_id)) { + io->io_hw_apic_id != apic_id)) { device_printf(dev, "pci%d:%d:%d:%d pci BAR0@%jx id %d " - "MADT id %d paddr@%jx\n", + "MADT id %d hw id %d paddr@%jx\n", pci_get_domain(dev), pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev), (uintmax_t)rman_get_start(res), apic_id, - io->io_apic_id, (uintmax_t)io->io_paddr); + io->io_apic_id, io->io_hw_apic_id, (uintmax_t)io->io_paddr); } mtx_unlock_spin(&icu_lock); return (0);
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