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7e4af296b3
freebsd-dev/sys/i386/isa
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John Baldwin 7e4af296b3 - Add a member to the atpic interrupt source structures to indicate if the 
IRQ is edge triggered or level triggered.  For ISA interrupts, we assume
  that edge triggered interrupts are always active high and that level
  triggered interrupts are always active low.
- Don't disable an edge triggered interrupt in the PIC.  This avoids
  outb instructions to the actual PIC for traditional ISA IRQs such as
  IRQ 1, 6, 14, and 15.  (Fast interrupts such as IRQs 0 and 8 don't mask
  their source, so this doesn't change anything for them.)
- For MCA systems we assume that all interrupts are level triggered and
  thus need masking.  Otherwise, we probe the ELCR.  If it exists we trust
  what it tells us regarding which interrupts are level triggered.  If it
  does not exist, we assume that IRQs 0, 1, 2, and 8 are edge triggered
  and that all other IRQs are level triggered and need masking.
- Instruct the ELCR mini-driver to restore its saved state during resume.
2004-05-04 20:12:52 +00:00
..
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 Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
atpic_vector.s Use %eax rather than %ax when loading segment registers to avoid partial 2004-04-16 19:26:37 +00:00
atpic.c - Add a member to the atpic interrupt source structures to indicate if the 2004-05-04 20:12:52 +00:00
ccbque.h Remove __P. 2002-03-20 07:51:46 +00:00
clock.c - The i8254 uses IRQ 0, not IRQ 8. Correct i8254_intsrc to reference the 2004-04-27 20:03:26 +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 Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
if_el.c Convert callers to the new bus_alloc_resource_any(9) API. 2004-03-17 17:50:55 +00:00
if_elreg.h Newbus the if_el (3Com 3c501) driver. Use bus_space_X() functions. 2000-12-15 20:09:10 +00:00
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 Convert callers to the new bus_alloc_resource_any(9) API. 2004-03-17 17:50:55 +00:00
nmi.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
npx.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
pcf.c Remove isa compat stuff. 2004-03-14 23:03:57 +00:00
pmtimer.c Use __FBSDID(). 2003-06-02 16:32:55 +00:00
prof_machdep.c These are changes to allow to use the Intel C/C++ compiler (lang/icc) 2004-03-12 21:45:33 +00:00
spic.c Convert callers to the new bus_alloc_resource_any(9) API. 2004-03-17 17:50:55 +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