igy fcd9e244be Delaying to mask interrupt by hardware until actually it occurs. ... The new code maintains two variables 'current_spl_level' and 'hardware_spl_level'. Variable hardware_spl_level reflects actual priority level at the hardware's point of view. hardware_spl_level is always synchronized to hardware. splraise() just increases current_spl_level. splx() sets current_spl_level. If (and only if) hardware_spl_level and current_spl_level is not same, splx() synchronizes interrupt mask register and hardware_spl_level to current_spl_level. In most case, splraise() raises current_spl_level and splx() restores only current_spl_level. When an interrupt occurs, hardware_spl_level and interrupt mask register are synchronized to current_spl_level. In this implementation, during a higher priority interrupt handler is running, lower priority interrupts never cause intr_dispatch() to run. It will avoid some race condition.		2003-07-21 06:17:32 +00:00
..
files.ixp12x0	using common bus_space_tag in ixpsip too	2003-07-13 02:48:41 +00:00
ixp12x0_clk.c	KNF	2003-07-13 09:25:50 +00:00
ixp12x0_clkreg.h	insert macro to protect itself against multiple includion.	2003-03-06 06:14:16 +00:00
ixp12x0_com.c	Back out the lwp/ktrace changes. They contained a lot of colateral damage,	2003-06-29 22:28:00 +00:00
ixp12x0_comreg.h	insert macro to protect itself against multiple includion.	2003-03-06 06:14:16 +00:00
ixp12x0_comvar.h	Remove #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS switch and old interrupt	2003-03-06 06:17:43 +00:00
ixp12x0_intr.c	Delaying to mask interrupt by hardware until actually it occurs.	2003-07-21 06:17:32 +00:00
ixp12x0_intr.h	Use the generic irq_dispatch.S	2003-01-03 00:55:59 +00:00
ixp12x0_io.c	mapping pci configuration space (not subregion)	2003-07-13 07:15:22 +00:00
ixp12x0_pci_dma.c	Add __KERNEL_RCSID tags	2003-03-25 06:12:46 +00:00
ixp12x0_pci.c	Add __KERNEL_RCSID tags	2003-03-25 06:12:46 +00:00
ixp12x0_pcireg.h	files.ixp12x0	2003-02-17 20:51:52 +00:00
ixp12x0.c	mapping pci configuration space (not subregion)	2003-07-13 07:15:22 +00:00
ixp12x0reg.h	move window of pci i/o cycle to higher address	2003-07-13 08:26:31 +00:00
ixp12x0var.h	code clean up	2003-07-13 08:56:16 +00:00
ixpsip.c	using common bus_space_tag in ixpsip too	2003-07-13 02:48:41 +00:00
ixpsipvar.h