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freebsd-skq/sys/amd64/isa/icu_vector.S

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Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
/*
* from: vector.s, 386BSD 0.1 unknown origin
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
*/
/*
* modified for PC98 by Kakefuda
*/
#ifdef PC98
#define ICU_IMR_OFFSET 2 /* IO_ICU{1,2} + 2 */
#else
#define ICU_IMR_OFFSET 1 /* IO_ICU{1,2} + 1 */
#endif
#define ICU_EOI 0x20 /* XXX - define elsewhere */
#define IRQ_BIT(irq_num) (1 << ((irq_num) % 8))
Change an assemble-time divide into a shift. Under binutils-2.8 gas in elf mode, the slash is a comment leader, while under non-elf it is a divide symbol (what a concept! :-). Theoretically, #APP/#NO_APP can change this but that doesn't seem to mesh too well with macros and line continuation.
1997-09-08 06:40:58 +00:00
#define IRQ_BYTE(irq_num) ((irq_num) >> 3)
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
#ifdef AUTO_EOI_1
#define ENABLE_ICU1 /* use auto-EOI to reduce i/o */
#define OUTB_ICU1
#else
#define ENABLE_ICU1 \
movb $ICU_EOI,%al ; /* as soon as possible send EOI ... */ \
OUTB_ICU1 /* ... to clear in service bit */
#define OUTB_ICU1 \
outb %al,$IO_ICU1
#endif
#ifdef AUTO_EOI_2
/*
* The data sheet says no auto-EOI on slave, but it sometimes works.
*/
#define ENABLE_ICU1_AND_2 ENABLE_ICU1
#else
#define ENABLE_ICU1_AND_2 \
movb $ICU_EOI,%al ; /* as above */ \
outb %al,$IO_ICU2 ; /* but do second icu first ... */ \
OUTB_ICU1 /* ... then first icu (if !AUTO_EOI_1) */
#endif
/*
* Macros for interrupt interrupt entry, call to handler, and exit.
*/
#define FAST_INTR(irq_num, vec_name, enable_icus) \
.text ; \
SUPERALIGN_TEXT ; \
IDTVEC(vec_name) ; \
- Change fast interrupts on x86 to push a full interrupt frame and to return through doreti to handle ast's. This is necessary for the clock interrupts to work properly. - Change the clock interrupts on the x86 to be fast instead of threaded. This is needed because both hardclock() and statclock() need to run in the context of the current process, not in a separate thread context. - Kill the prevproc hack as it is no longer needed. - We really need Giant when we call psignal(), but we don't want to block during the clock interrupt. Instead, use two p_flag's in the proc struct to mark the current process as having a pending SIGVTALRM or a SIGPROF and let them be delivered during ast() when hardclock() has finished running. - Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways. It was broken on the x86 if it was turned on since cpl is gone. It's only use was to bogusly run softclock() directly during hardclock() rather than scheduling an SWI. - Remove the COM_LOCK simplelock and replace it with a clock_lock spin mutex. Since the spin mutex already handles disabling/restoring interrupts appropriately, this also lets us axe all the *_intr() fu. - Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use temporary fast interrupts for the APIC trial. - Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending signals in hardclock() that are to be delivered in ast(). Submitted by: jakeb (making statclock safe in a fast interrupt) Submitted by: cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
pushl $0 ; /* dummy error code */ \
pushl $0 ; /* dummy trap type */ \
pushal ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
pushl %ds ; \
- Change fast interrupts on x86 to push a full interrupt frame and to return through doreti to handle ast's. This is necessary for the clock interrupts to work properly. - Change the clock interrupts on the x86 to be fast instead of threaded. This is needed because both hardclock() and statclock() need to run in the context of the current process, not in a separate thread context. - Kill the prevproc hack as it is no longer needed. - We really need Giant when we call psignal(), but we don't want to block during the clock interrupt. Instead, use two p_flag's in the proc struct to mark the current process as having a pending SIGVTALRM or a SIGPROF and let them be delivered during ast() when hardclock() has finished running. - Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways. It was broken on the x86 if it was turned on since cpl is gone. It's only use was to bogusly run softclock() directly during hardclock() rather than scheduling an SWI. - Remove the COM_LOCK simplelock and replace it with a clock_lock spin mutex. Since the spin mutex already handles disabling/restoring interrupts appropriately, this also lets us axe all the *_intr() fu. - Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use temporary fast interrupts for the APIC trial. - Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending signals in hardclock() that are to be delivered in ast(). Submitted by: jakeb (making statclock safe in a fast interrupt) Submitted by: cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
pushl %es ; \
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
pushl %fs ; \
1. `movl' is for use with 32-bit operands. Do NOT use it with 16-bit operands. `movw' could be used, but instead let the assembler decide the right instruction to use. 2. AT&T asm syntax requires a leading '*' in front of the operand for indirect calls and jumps.
2000-05-10 01:24:23 +00:00
mov $KDSEL,%ax ; \
mov %ax,%ds ; \
- Change fast interrupts on x86 to push a full interrupt frame and to return through doreti to handle ast's. This is necessary for the clock interrupts to work properly. - Change the clock interrupts on the x86 to be fast instead of threaded. This is needed because both hardclock() and statclock() need to run in the context of the current process, not in a separate thread context. - Kill the prevproc hack as it is no longer needed. - We really need Giant when we call psignal(), but we don't want to block during the clock interrupt. Instead, use two p_flag's in the proc struct to mark the current process as having a pending SIGVTALRM or a SIGPROF and let them be delivered during ast() when hardclock() has finished running. - Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways. It was broken on the x86 if it was turned on since cpl is gone. It's only use was to bogusly run softclock() directly during hardclock() rather than scheduling an SWI. - Remove the COM_LOCK simplelock and replace it with a clock_lock spin mutex. Since the spin mutex already handles disabling/restoring interrupts appropriately, this also lets us axe all the *_intr() fu. - Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use temporary fast interrupts for the APIC trial. - Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending signals in hardclock() that are to be delivered in ast(). Submitted by: jakeb (making statclock safe in a fast interrupt) Submitted by: cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
mov %ax,%es ; \
Use %fs to access per-cpu variables in uni-processor kernels the same as multi-processor kernels. The old way made it difficult for kernel modules to be portable between uni-processor and multi-processor kernels. It is no longer necessary to jump through hoops. - always load %fs with the private segment on entry to the kernel - change the type of the self referntial pointer from struct privatespace to struct globaldata - make the globaldata symbol have value 0 in all cases, so the symbols in globals.s are always offsets, not aliases for fields in globaldata - define the globaldata space used for uniprocessor kernels in C, rather than assembler - change the assmebly language accessors to use %fs, add a macro PCPU_ADDR(member, reg), which loads the register reg with the address of the per-cpu variable member
2001-01-06 17:40:04 +00:00
mov $KPSEL,%ax ; \
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
mov %ax,%fs ; \
- Change fast interrupts on x86 to push a full interrupt frame and to return through doreti to handle ast's. This is necessary for the clock interrupts to work properly. - Change the clock interrupts on the x86 to be fast instead of threaded. This is needed because both hardclock() and statclock() need to run in the context of the current process, not in a separate thread context. - Kill the prevproc hack as it is no longer needed. - We really need Giant when we call psignal(), but we don't want to block during the clock interrupt. Instead, use two p_flag's in the proc struct to mark the current process as having a pending SIGVTALRM or a SIGPROF and let them be delivered during ast() when hardclock() has finished running. - Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways. It was broken on the x86 if it was turned on since cpl is gone. It's only use was to bogusly run softclock() directly during hardclock() rather than scheduling an SWI. - Remove the COM_LOCK simplelock and replace it with a clock_lock spin mutex. Since the spin mutex already handles disabling/restoring interrupts appropriately, this also lets us axe all the *_intr() fu. - Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use temporary fast interrupts for the APIC trial. - Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending signals in hardclock() that are to be delivered in ast(). Submitted by: jakeb (making statclock safe in a fast interrupt) Submitted by: cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
FAKE_MCOUNT((12+ACTUALLY_PUSHED)*4(%esp)) ; \
Make intr_nesting_level per-process, rather than per-cpu. Setup interrupt threads to run with it always >= 1, so that malloc can detect M_WAITOK from "interrupt" context. This is also necessary in order to context switch from sched_ithd() directly. Reviewed By: peter
2001-01-21 19:25:07 +00:00
movl PCPU(CURPROC),%ebx ; \
incl P_INTR_NESTING_LEVEL(%ebx) ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
pushl _intr_unit + (irq_num) * 4 ; \
call *_intr_handler + (irq_num) * 4 ; /* do the work ASAP */ \
enable_icus ; /* (re)enable ASAP (helps edge trigger?) */ \
addl $4,%esp ; \
incl _cnt+V_INTR ; /* book-keeping can wait */ \
movl _intr_countp + (irq_num) * 4,%eax ; \
incl (%eax) ; \
Make intr_nesting_level per-process, rather than per-cpu. Setup interrupt threads to run with it always >= 1, so that malloc can detect M_WAITOK from "interrupt" context. This is also necessary in order to context switch from sched_ithd() directly. Reviewed By: peter
2001-01-21 19:25:07 +00:00
decl P_INTR_NESTING_LEVEL(%ebx) ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
MEXITCOUNT ; \
Change doreti to take a trapframe instead of an intrframe. Remove associated pushes of dummy units to convert frame. Reviewed by: jhb
2000-12-01 02:09:45 +00:00
jmp _doreti
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
/*
* Slow, threaded interrupts.
*
* XXX Most of the parameters here are obsolete. Fix this when we're
* done.
* XXX we really shouldn't return via doreti if we just schedule the
* interrupt handler and don't run anything. We could just do an
* iret. FIXME.
*/
Fixed glitches (jumps) of about 1/HZ seconds for the i8254 timecounter. The old version only worked right when the time was read strictly more often than every 1/HZ seconds, but we only guarantee reading it every (1/HZ + epsilon) seconds. Part of rev.1.126-1.127 attempted to fix this but didn't succeed. Detect counter rollover using the heuristic from the old version of microtime() with additional complications for supporting calls from fast interrupt handlers. This works provided i8254 interrupts are not delayed by more than 1/(2*HZ) seconds. This needs more comments, and cleanups for the SMP case, and more testing of the SMP case before it is merged into RELENG_3. Tested by: jhay
1999-05-28 14:08:59 +00:00
#define INTR(irq_num, vec_name, icu, enable_icus, reg, maybe_extra_ipending) \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
.text ; \
SUPERALIGN_TEXT ; \
IDTVEC(vec_name) ; \
pushl $0 ; /* dummy error code */ \
pushl $0 ; /* dummy trap type */ \
pushal ; \
pushl %ds ; /* save our data and extra segments ... */ \
pushl %es ; \
Enable vmspace sharing on SMP. Major changes are, - %fs register is added to trapframe and saved/restored upon kernel entry/exit. - Per-cpu pages are no longer mapped at the same virtual address. - Each cpu now has a separate gdt selector table. A new segment selector is added to point to per-cpu pages, per-cpu global variables are now accessed through this new selector (%fs). The selectors in gdt table are rearranged for cache line optimization. - fask_vfork is now on as default for both UP and SMP. - Some aio code cleanup. Reviewed by: Alan Cox <alc@cs.rice.edu> John Dyson <dyson@iquest.net> Julian Elischer <julian@whistel.com> Bruce Evans <bde@zeta.org.au> David Greenman <dg@root.com>
1999-04-28 01:04:33 +00:00
pushl %fs ; \
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
mov $KDSEL,%ax ; /* load kernel ds, es and fs */ \
mov %ax,%ds ; \
1. `movl' is for use with 32-bit operands. Do NOT use it with 16-bit operands. `movw' could be used, but instead let the assembler decide the right instruction to use. 2. AT&T asm syntax requires a leading '*' in front of the operand for indirect calls and jumps.
2000-05-10 01:24:23 +00:00
mov %ax,%es ; \
Use %fs to access per-cpu variables in uni-processor kernels the same as multi-processor kernels. The old way made it difficult for kernel modules to be portable between uni-processor and multi-processor kernels. It is no longer necessary to jump through hoops. - always load %fs with the private segment on entry to the kernel - change the type of the self referntial pointer from struct privatespace to struct globaldata - make the globaldata symbol have value 0 in all cases, so the symbols in globals.s are always offsets, not aliases for fields in globaldata - define the globaldata space used for uniprocessor kernels in C, rather than assembler - change the assmebly language accessors to use %fs, add a macro PCPU_ADDR(member, reg), which loads the register reg with the address of the per-cpu variable member
2001-01-06 17:40:04 +00:00
mov $KPSEL,%ax ; \
1. `movl' is for use with 32-bit operands. Do NOT use it with 16-bit operands. `movw' could be used, but instead let the assembler decide the right instruction to use. 2. AT&T asm syntax requires a leading '*' in front of the operand for indirect calls and jumps.
2000-05-10 01:24:23 +00:00
mov %ax,%fs ; \
Fixed glitches (jumps) of about 1/HZ seconds for the i8254 timecounter. The old version only worked right when the time was read strictly more often than every 1/HZ seconds, but we only guarantee reading it every (1/HZ + epsilon) seconds. Part of rev.1.126-1.127 attempted to fix this but didn't succeed. Detect counter rollover using the heuristic from the old version of microtime() with additional complications for supporting calls from fast interrupt handlers. This works provided i8254 interrupts are not delayed by more than 1/(2*HZ) seconds. This needs more comments, and cleanups for the SMP case, and more testing of the SMP case before it is merged into RELENG_3. Tested by: jhay
1999-05-28 14:08:59 +00:00
maybe_extra_ipending ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
movb _imen + IRQ_BYTE(irq_num),%al ; \
orb $IRQ_BIT(irq_num),%al ; \
movb %al,_imen + IRQ_BYTE(irq_num) ; \
outb %al,$icu+ICU_IMR_OFFSET ; \
enable_icus ; \
Make intr_nesting_level per-process, rather than per-cpu. Setup interrupt threads to run with it always >= 1, so that malloc can detect M_WAITOK from "interrupt" context. This is also necessary in order to context switch from sched_ithd() directly. Reviewed By: peter
2001-01-21 19:25:07 +00:00
movl PCPU(CURPROC),%ebx ; \
incl P_INTR_NESTING_LEVEL(%ebx) ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
__CONCAT(Xresume,irq_num): ; \
Enable vmspace sharing on SMP. Major changes are, - %fs register is added to trapframe and saved/restored upon kernel entry/exit. - Per-cpu pages are no longer mapped at the same virtual address. - Each cpu now has a separate gdt selector table. A new segment selector is added to point to per-cpu pages, per-cpu global variables are now accessed through this new selector (%fs). The selectors in gdt table are rearranged for cache line optimization. - fask_vfork is now on as default for both UP and SMP. - Some aio code cleanup. Reviewed by: Alan Cox <alc@cs.rice.edu> John Dyson <dyson@iquest.net> Julian Elischer <julian@whistel.com> Bruce Evans <bde@zeta.org.au> David Greenman <dg@root.com>
1999-04-28 01:04:33 +00:00
FAKE_MCOUNT(13*4(%esp)) ; /* XXX late to avoid double count */ \
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
pushl $irq_num; /* pass the IRQ */ \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
sti ; \
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
call _sched_ithd ; \
addl $4, %esp ; /* discard the parameter */ \
Make intr_nesting_level per-process, rather than per-cpu. Setup interrupt threads to run with it always >= 1, so that malloc can detect M_WAITOK from "interrupt" context. This is also necessary in order to context switch from sched_ithd() directly. Reviewed By: peter
2001-01-21 19:25:07 +00:00
decl P_INTR_NESTING_LEVEL(%ebx) ; \
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
MEXITCOUNT ; \
/* We could usually avoid the following jmp by inlining some of */ \
/* _doreti, but it's probably better to use less cache. */ \
Change doreti to take a trapframe instead of an intrframe. Remove associated pushes of dummy units to convert frame. Reviewed by: jhb
2000-12-01 02:09:45 +00:00
jmp _doreti /* and catch up inside doreti */
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
MCOUNT_LABEL(bintr)
FAST_INTR(0,fastintr0, ENABLE_ICU1)
FAST_INTR(1,fastintr1, ENABLE_ICU1)
FAST_INTR(2,fastintr2, ENABLE_ICU1)
FAST_INTR(3,fastintr3, ENABLE_ICU1)
FAST_INTR(4,fastintr4, ENABLE_ICU1)
FAST_INTR(5,fastintr5, ENABLE_ICU1)
FAST_INTR(6,fastintr6, ENABLE_ICU1)
FAST_INTR(7,fastintr7, ENABLE_ICU1)
FAST_INTR(8,fastintr8, ENABLE_ICU1_AND_2)
FAST_INTR(9,fastintr9, ENABLE_ICU1_AND_2)
FAST_INTR(10,fastintr10, ENABLE_ICU1_AND_2)
FAST_INTR(11,fastintr11, ENABLE_ICU1_AND_2)
FAST_INTR(12,fastintr12, ENABLE_ICU1_AND_2)
FAST_INTR(13,fastintr13, ENABLE_ICU1_AND_2)
FAST_INTR(14,fastintr14, ENABLE_ICU1_AND_2)
FAST_INTR(15,fastintr15, ENABLE_ICU1_AND_2)
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
Fixed glitches (jumps) of about 1/HZ seconds for the i8254 timecounter. The old version only worked right when the time was read strictly more often than every 1/HZ seconds, but we only guarantee reading it every (1/HZ + epsilon) seconds. Part of rev.1.126-1.127 attempted to fix this but didn't succeed. Detect counter rollover using the heuristic from the old version of microtime() with additional complications for supporting calls from fast interrupt handlers. This works provided i8254 interrupts are not delayed by more than 1/(2*HZ) seconds. This needs more comments, and cleanups for the SMP case, and more testing of the SMP case before it is merged into RELENG_3. Tested by: jhay
1999-05-28 14:08:59 +00:00
#define CLKINTR_PENDING movl $1,CNAME(clkintr_pending)
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
/* Threaded interrupts */
Fixed glitches (jumps) of about 1/HZ seconds for the i8254 timecounter. The old version only worked right when the time was read strictly more often than every 1/HZ seconds, but we only guarantee reading it every (1/HZ + epsilon) seconds. Part of rev.1.126-1.127 attempted to fix this but didn't succeed. Detect counter rollover using the heuristic from the old version of microtime() with additional complications for supporting calls from fast interrupt handlers. This works provided i8254 interrupts are not delayed by more than 1/(2*HZ) seconds. This needs more comments, and cleanups for the SMP case, and more testing of the SMP case before it is merged into RELENG_3. Tested by: jhay
1999-05-28 14:08:59 +00:00
INTR(0,intr0, IO_ICU1, ENABLE_ICU1, al, CLKINTR_PENDING)
INTR(1,intr1, IO_ICU1, ENABLE_ICU1, al,)
INTR(2,intr2, IO_ICU1, ENABLE_ICU1, al,)
INTR(3,intr3, IO_ICU1, ENABLE_ICU1, al,)
INTR(4,intr4, IO_ICU1, ENABLE_ICU1, al,)
INTR(5,intr5, IO_ICU1, ENABLE_ICU1, al,)
INTR(6,intr6, IO_ICU1, ENABLE_ICU1, al,)
INTR(7,intr7, IO_ICU1, ENABLE_ICU1, al,)
INTR(8,intr8, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(9,intr9, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(10,intr10, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(11,intr11, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(12,intr12, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(13,intr13, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(14,intr14, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
INTR(15,intr15, IO_ICU2, ENABLE_ICU1_AND_2, ah,)
Major update to the way synchronization is done in the kernel. Highlights include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
Split vector.s into UP and SMP specific files: - vector.s <- stub called by i386/exception.s - icu_vector.s <- UP - apic_vector.s <- SMP Split icu.s into UP and SMP specific files: - ipl.s <- stub called by i386/exception.s (formerly icu.s) - icu_ipl.s <- UP - apic_ipl.s <- SMP This was done in preparation for massive changes to the SMP INTerrupt mechanisms. More fine tuning, such as merging ipl.s into exception.s, may be appropriate.
1997-05-26 17:58:27 +00:00
MCOUNT_LABEL(eintr)
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