diff options
| author | jhb <jhb@FreeBSD.org> | 2001-12-20 23:48:31 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-12-20 23:48:31 +0000 |
| commit | 2463f40fc340e69b97e1ba3f1a7db47384b50a83 (patch) | |
| tree | dec76d77f99795635c90df0631ffc2beb333b91b /sys/isa/atrtc.c | |
| parent | 7a0109b5c0a87d4cff83c1923789cf9c5b38126a (diff) | |
| download | FreeBSD-src-2463f40fc340e69b97e1ba3f1a7db47384b50a83.zip FreeBSD-src-2463f40fc340e69b97e1ba3f1a7db47384b50a83.tar.gz | |
Introduce a standard name for the lock protecting an interrupt controller
and it's associated state variables: icu_lock with the name "icu". This
renames the imen_mtx for x86 SMP, but also uses the lock to protect
access to the 8259 PIC on x86 UP. This also adds an appropriate lock to
the various Alpha chipsets which fixes problems with Alpha SMP machines
dropping interrupts with an SMP kernel.
Diffstat (limited to 'sys/isa/atrtc.c')
| -rw-r--r-- | sys/isa/atrtc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/isa/atrtc.c b/sys/isa/atrtc.c index a7aaea0..a39f773 100644 --- a/sys/isa/atrtc.c +++ b/sys/isa/atrtc.c @@ -1026,7 +1026,9 @@ cpu_initclocks() inthand_add("clk", apic_8254_intr, (driver_intr_t *)clkintr, NULL, INTR_TYPE_CLK | INTR_FAST, &clkdesc); + mtx_lock_spin(&icu_lock); INTREN(1 << apic_8254_intr); + mtx_unlock_spin(&icu_lock); #else /* APIC_IO */ @@ -1037,7 +1039,9 @@ cpu_initclocks() */ inthand_add("clk", 0, (driver_intr_t *)clkintr, NULL, INTR_TYPE_CLK | INTR_FAST, NULL); + mtx_lock_spin(&icu_lock); INTREN(IRQ0); + mtx_unlock_spin(&icu_lock); #endif /* APIC_IO */ @@ -1060,11 +1064,13 @@ cpu_initclocks() inthand_add("rtc", 8, (driver_intr_t *)rtcintr, NULL, INTR_TYPE_CLK | INTR_FAST, NULL); + mtx_lock_spin(&icu_lock); #ifdef APIC_IO INTREN(APIC_IRQ8); #else INTREN(IRQ8); #endif /* APIC_IO */ + mtx_unlock_spin(&icu_lock); writertc(RTC_STATUSB, rtc_statusb); @@ -1081,7 +1087,9 @@ cpu_initclocks() * on the IO APIC. * Workaround: Limited variant of mixed mode. */ + mtx_lock_spin(&icu_lock); INTRDIS(1 << apic_8254_intr); + mtx_unlock_spin(&icu_lock); inthand_remove(clkdesc); printf("APIC_IO: Broken MP table detected: " "8254 is not connected to " @@ -1104,7 +1112,9 @@ cpu_initclocks() inthand_add("clk", apic_8254_intr, (driver_intr_t *)clkintr, NULL, INTR_TYPE_CLK | INTR_FAST, NULL); + mtx_lock_spin(&icu_lock); INTREN(1 << apic_8254_intr); + mtx_unlock_spin(&icu_lock); } } |
