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Implement the IPI send functions. No mapping between IPI message

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Id and interrupt vector has been made yet.
This commit is contained in:
Marcel Moolenaar 2001-10-21 08:57:02 +00:00
parent a986a974e9
commit cf1a20ea71
1 changed files with 41 additions and 6 deletions
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47
sys/ia64/ia64/mp_machdep.c
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@ -43,10 +43,14 @@
#include <machine/atomic.h>
#include <machine/globaldata.h>
#include <machine/pal.h>
#include <machine/pmap.h>
#include <machine/clock.h>
int boot_cpu_id;
static void ipi_send(u_int64_t, u_int64_t);
u_int64_t cpu_to_lid[MAXCPU];
int ncpus;
int
cpu_mp_probe()
@ -71,9 +75,13 @@ cpu_mp_announce()
void
ipi_selected(u_int cpus, u_int64_t ipi)
{
u_int mask;
int cpu;
CTR2(KTR_SMP, "ipi_selected: cpus: %x ipi: %lx", cpus, ipi);
panic(__func__": not implemented");
for (mask = 1, cpu = 0; cpu < ncpus; mask <<= 1, cpu++) {
if (cpus & mask)
ipi_send(cpu_to_lid[cpu], ipi);
}
}
/*
@ -82,7 +90,10 @@ ipi_selected(u_int cpus, u_int64_t ipi)
void
ipi_all(u_int64_t ipi)
{
ipi_selected(all_cpus, ipi);
int cpu;
for (cpu = 0; cpu < ncpus; cpu++)
ipi_send(cpu_to_lid[cpu], ipi);
}
/*
@ -91,7 +102,14 @@ ipi_all(u_int64_t ipi)
void
ipi_all_but_self(u_int64_t ipi)
{
ipi_selected(PCPU_GET(other_cpus), ipi);
u_int64_t lid;
int cpu;
for (cpu = 0; cpu < ncpus; cpu++) {
lid = cpu_to_lid[cpu];
if (lid != ia64_get_lid())
ipi_send(lid, ipi);
}
}
/*
@ -100,5 +118,22 @@ ipi_all_but_self(u_int64_t ipi)
void
ipi_self(u_int64_t ipi)
{
ipi_selected(1 << PCPU_GET(cpuid), ipi);
ipi_send(ia64_get_lid(), ipi);
}
/*
* Send an IPI to the specified processor. The lid parameter holds the
* cr.lid (CR64) contents of the target processor. Only the id and eid
* fields are used here.
*/
static void
ipi_send(u_int64_t lid, u_int64_t ipi)
{
volatile u_int64_t *pipi;
CTR2(KTR_SMP, __func__ ": lid=%lx, ipi=%lx", lid, ipi);
pipi = ia64_memory_address(PAL_PIB_DEFAULT_ADDR |
((lid >> 12) & 0xFFFF0L));
*pipi = ipi & 0xFF;
}