diff options
-rw-r--r-- | sys/x86/x86/io_apic.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/sys/x86/x86/io_apic.c b/sys/x86/x86/io_apic.c index 4467f8f..6d62b1e 100644 --- a/sys/x86/x86/io_apic.c +++ b/sys/x86/x86/io_apic.c @@ -922,3 +922,99 @@ DEFINE_CLASS_0(apic, apic_driver, apic_methods, 0); static devclass_t apic_devclass; DRIVER_MODULE(apic, nexus, apic_driver, apic_devclass, 0, 0); + +#include "opt_ddb.h" + +#ifdef DDB +#include <ddb/ddb.h> + +static const char * +ioapic_delivery_mode(uint32_t mode) +{ + + switch (mode) { + case IOART_DELFIXED: + return ("fixed"); + case IOART_DELLOPRI: + return ("lowestpri"); + case IOART_DELSMI: + return ("SMI"); + case IOART_DELRSV1: + return ("rsrvd1"); + case IOART_DELNMI: + return ("NMI"); + case IOART_DELINIT: + return ("INIT"); + case IOART_DELRSV2: + return ("rsrvd2"); + case IOART_DELEXINT: + return ("ExtINT"); + default: + return (""); + } +} + +static u_int +db_ioapic_read(volatile ioapic_t *apic, int reg) +{ + + apic->ioregsel = reg; + return (apic->iowin); +} + +static void +db_show_ioapic_one(volatile ioapic_t *io_addr) +{ + uint32_t r, lo, hi; + int mre, i; + + r = db_ioapic_read(io_addr, IOAPIC_VER); + mre = (r & IOART_VER_MAXREDIR) >> MAXREDIRSHIFT; + db_printf("Id 0x%08x Ver 0x%02x MRE %d\n", + db_ioapic_read(io_addr, IOAPIC_ID), r & IOART_VER_VERSION, mre); + for (i = 0; i < mre; i++) { + lo = db_ioapic_read(io_addr, IOAPIC_REDTBL_LO(i)); + hi = db_ioapic_read(io_addr, IOAPIC_REDTBL_HI(i)); + db_printf(" pin %d Dest %s/%x %smasked Trig %s RemoteIRR %d " + "Polarity %s Status %s DeliveryMode %s Vec %d\n", i, + (lo & IOART_DESTMOD) == IOART_DESTLOG ? "log" : "phy", + (hi & IOART_DEST) >> 24, + (lo & IOART_INTMASK) == IOART_INTMSET ? "" : "not", + (lo & IOART_TRGRMOD) == IOART_TRGRLVL ? "lvl" : "edge", + (lo & IOART_REM_IRR) == IOART_REM_IRR ? 1 : 0, + (lo & IOART_INTPOL) == IOART_INTALO ? "low" : "high", + (lo & IOART_DELIVS) == IOART_DELIVS ? "pend" : "idle", + ioapic_delivery_mode(lo & IOART_DELMOD), + (lo & IOART_INTVEC)); + } +} + +DB_SHOW_COMMAND(ioapic, db_show_ioapic) +{ + struct ioapic *ioapic; + int idx, i; + + if (!have_addr) { + db_printf("usage: show ioapic index\n"); + return; + } + + idx = (int)addr; + i = 0; + STAILQ_FOREACH(ioapic, &ioapic_list, io_next) { + if (idx == i) { + db_show_ioapic_one(ioapic->io_addr); + break; + } + i++; + } +} + +DB_SHOW_ALL_COMMAND(ioapics, db_show_all_ioapics) +{ + struct ioapic *ioapic; + + STAILQ_FOREACH(ioapic, &ioapic_list, io_next) + db_show_ioapic_one(ioapic->io_addr); +} +#endif |