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Add a new ddb command 'show lapic' to dump details about the local APIC

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registers for the current CPU.

MFC after:	3 days
This commit is contained in:
John Baldwin 2006-09-11 20:12:42 +00:00
parent 5c15c7e71d
commit 884ff1813f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=162233
2 changed files with 140 additions and 0 deletions
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70
sys/amd64/amd64/local_apic.c
View File

@ -794,6 +794,76 @@ DB_SHOW_COMMAND(apic, db_show_apic)
}
}
}
static void
dump_mask(const char *prefix, uint32_t v, int base)
{
int i, first;
first = 1;
for (i = 0; i < 32; i++)
if (v & (1 << i)) {
if (first) {
db_printf("%s:", prefix);
first = 0;
}
db_printf(" %02x", base + i);
}
if (!first)
db_printf("\n");
}
/* Show info from the lapic regs for this CPU. */
DB_SHOW_COMMAND(lapic, db_show_lapic)
{
uint32_t v;
db_printf("lapic ID = %d\n", lapic_id());
v = lapic->version;
db_printf("version = %d.%d\n", (v & APIC_VER_VERSION) >> 4,
v & 0xf);
db_printf("max LVT = %d\n", (v & APIC_VER_MAXLVT) >> MAXLVTSHIFT);
v = lapic->svr;
db_printf("SVR = %02x (%s)\n", v & APIC_SVR_VECTOR,
v & APIC_SVR_ENABLE ? "enabled" : "disabled");
db_printf("TPR = %02x\n", lapic->tpr);
#define dump_field(prefix, index) \
dump_mask(__XSTRING(prefix ## index), lapic->prefix ## index, \
index * 32)
db_printf("In-service Interrupts:\n");
dump_field(isr, 0);
dump_field(isr, 1);
dump_field(isr, 2);
dump_field(isr, 3);
dump_field(isr, 4);
dump_field(isr, 5);
dump_field(isr, 6);
dump_field(isr, 7);
db_printf("TMR Interrupts:\n");
dump_field(tmr, 0);
dump_field(tmr, 1);
dump_field(tmr, 2);
dump_field(tmr, 3);
dump_field(tmr, 4);
dump_field(tmr, 5);
dump_field(tmr, 6);
dump_field(tmr, 7);
db_printf("IRR Interrupts:\n");
dump_field(irr, 0);
dump_field(irr, 1);
dump_field(irr, 2);
dump_field(irr, 3);
dump_field(irr, 4);
dump_field(irr, 5);
dump_field(irr, 6);
dump_field(irr, 7);
#undef dump_field
}
#endif
/*

70
sys/i386/i386/local_apic.c
View File

@ -797,6 +797,76 @@ DB_SHOW_COMMAND(apic, db_show_apic)
}
}
}
static void
dump_mask(const char *prefix, uint32_t v, int base)
{
int i, first;
first = 1;
for (i = 0; i < 32; i++)
if (v & (1 << i)) {
if (first) {
db_printf("%s:", prefix);
first = 0;
}
db_printf(" %02x", base + i);
}
if (!first)
db_printf("\n");
}
/* Show info from the lapic regs for this CPU. */
DB_SHOW_COMMAND(lapic, db_show_lapic)
{
uint32_t v;
db_printf("lapic ID = %d\n", lapic_id());
v = lapic->version;
db_printf("version = %d.%d\n", (v & APIC_VER_VERSION) >> 4,
v & 0xf);
db_printf("max LVT = %d\n", (v & APIC_VER_MAXLVT) >> MAXLVTSHIFT);
v = lapic->svr;
db_printf("SVR = %02x (%s)\n", v & APIC_SVR_VECTOR,
v & APIC_SVR_ENABLE ? "enabled" : "disabled");
db_printf("TPR = %02x\n", lapic->tpr);
#define dump_field(prefix, index) \
dump_mask(__XSTRING(prefix ## index), lapic->prefix ## index, \
index * 32)
db_printf("In-service Interrupts:\n");
dump_field(isr, 0);
dump_field(isr, 1);
dump_field(isr, 2);
dump_field(isr, 3);
dump_field(isr, 4);
dump_field(isr, 5);
dump_field(isr, 6);
dump_field(isr, 7);
db_printf("TMR Interrupts:\n");
dump_field(tmr, 0);
dump_field(tmr, 1);
dump_field(tmr, 2);
dump_field(tmr, 3);
dump_field(tmr, 4);
dump_field(tmr, 5);
dump_field(tmr, 6);
dump_field(tmr, 7);
db_printf("IRR Interrupts:\n");
dump_field(irr, 0);
dump_field(irr, 1);
dump_field(irr, 2);
dump_field(irr, 3);
dump_field(irr, 4);
dump_field(irr, 5);
dump_field(irr, 6);
dump_field(irr, 7);
#undef dump_field
}
#endif
/*