Bruce Evans bed16055e7 Fixed misclassification of npx interrupts caused by npx_probe(). ... Dividing by 0 in order to check for irq13/exception16 delivery apparently always causes an irq13 even if we have configured for exception16 (by setting CR0_NE). This was expected, but the timing of the irq13 was unexpected. Without CR0_NE, the irq13 is delivered synchronously at least on my test machine, but with CR0_NE it is delivered a little later (about 250 nsec) in PIC mode and much later (5000-10000 nsec) in APIC mode. So especially in APIC mode, the irq13 may arrive after it is supposed to be shut down. It should then be masked, but the shutdown is incomplete, so the irq goes to a null handler that just reports it as stray. The fix is to wait a bit after dividing by 0 to give a good chance of the irq13 being handled by its proper handler. Removed the hack that was supposed to recover from the incomplete shutdown of irq13. The shutdown is now even more incomplete, or perhaps just incomplete in a different way, but the hack now has no effect because irq13 is edge triggered and handling of edge triggered interrupts is now optimized by skipping their masking. The hack only worked due to it accidentally not losing races. The incomplete shutdown of irq13 still allows unprivileged users to generate a stray irq13 (except on systems where irq13 is actually used) by unmasking an npx exception and causing one. The exception gets handled properly by the exception 16 handler. A spurious irq13 is delivered asynchronously but is harmless (as in the probe) because it is almost perfectly not handled by the null interrupt handler. Perfectly not handling it involves mainly not resetting the npx busy latch. This prevents further irq13's despite them not being masked in the [A]PIC.		2004-06-06 15:17:44 +00:00
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ic	Remove old cy driver files. They have been repo-copied to sys/dev/cy and	2004-05-02 05:38:49 +00:00
pcvt	Manual edits to change linesw[]-frobbing to ttyld_*() calls.	2004-06-04 20:04:52 +00:00
atpic_vector.s	MFamd64:	2004-05-26 07:43:41 +00:00
atpic.c	Add some missing <sys/module.h> includes which are masked by the	2004-05-30 17:57:46 +00:00
ccbque.h
clock.c	Add some missing <sys/module.h> includes which are masked by the	2004-05-30 17:57:46 +00:00
elcr.c	Add a simple mini-driver for the ELCR register. Originally, the ELCR	2004-05-04 20:07:46 +00:00
elink.c	Use __FBSDID().	2003-06-02 16:32:55 +00:00
elink.h	- Change ELINK_ID_PORT; the 3c507 likes 0x100 better.	2003-03-29 13:18:20 +00:00
icu.h	- Move some macros from icu.h into atpic.c as that is the only place they	2004-05-11 20:23:24 +00:00
if_el.c	Add missing #include <sys/module.h>	2004-05-30 20:34:58 +00:00
if_elreg.h
isa_dma.c	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
isa_dma.h	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
isa.c	remove stale comment since these limits have been increased YEARS ago...	2004-03-17 19:04:58 +00:00
isa.h	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
lptreg.h
mse.c	Add missing #include <sys/module.h>	2004-05-30 20:34:58 +00:00
nmi.c	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
npx.c	Fixed misclassification of npx interrupts caused by npx_probe().	2004-06-06 15:17:44 +00:00
pcf.c	Remove isa compat stuff.	2004-03-14 23:03:57 +00:00
pmtimer.c	Add some missing <sys/module.h> includes which are masked by the	2004-05-30 17:57:46 +00:00
prof_machdep.c	Quick fix for overflow when tsc_freq >= 2^31. "int profrate" in struct	2004-05-26 09:43:38 +00:00
spic.c	Add missing #include <sys/module.h>	2004-05-30 20:34:58 +00:00
spicreg.h	Device megapatch 1/6:	2004-02-21 19:42:58 +00:00
spkr.c	Device megapatch 4/6:	2004-02-21 21:10:55 +00:00
timerreg.h	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
vesa.c	Make the 80x60, 132x25, 132x43, 132x50, and 132x60 VESA text modes	2003-07-18 00:06:10 +00:00