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authorSteve Passe <fsmp@FreeBSD.org>1997-07-13 01:22:48 +0000
committerSteve Passe <fsmp@FreeBSD.org>1997-07-13 01:22:48 +0000
commit7503ccc1c8c31ff7fba47cc48e8a6abfa2d6adaf (patch)
tree8523171c19a8842b290d514711a9806ba183470d /sys/kern/subr_smp.c
parentc064ef91754d3c65d59dd4c02c539ac3495fe79f (diff)
downloadsrc-test2-7503ccc1c8c31ff7fba47cc48e8a6abfa2d6adaf.tar.gz
src-test2-7503ccc1c8c31ff7fba47cc48e8a6abfa2d6adaf.zip
Notes
Diffstat (limited to 'sys/kern/subr_smp.c')
-rw-r--r--sys/kern/subr_smp.c87
1 files changed, 23 insertions, 64 deletions
diff --git a/sys/kern/subr_smp.c b/sys/kern/subr_smp.c
index bf1b9a9627ae..157c218d2fad 100644
--- a/sys/kern/subr_smp.c
+++ b/sys/kern/subr_smp.c
@@ -22,7 +22,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * $Id: mp_machdep.c,v 1.7 1997/07/08 23:42:28 smp Exp smp $
+ * $Id: mp_machdep.c,v 1.14 1997/07/13 00:42:14 smp Exp smp $
*/
#include "opt_smp.h"
@@ -45,16 +45,12 @@
#include <machine/mpapic.h>
#include <machine/cpufunc.h>
#include <machine/segments.h>
-#include <machine/smptests.h> /** TEST_DEFAULT_CONFIG, TEST_CPUSTOP */
+#include <machine/smptests.h> /** TEST_DEFAULT_CONFIG, TEST_CPUSTOP _TEST1 */
#include <machine/tss.h>
#include <machine/specialreg.h>
#include <i386/i386/cons.h> /* cngetc() */
-#if defined(TEST_CPUSTOP)
-void db_printf __P((const char *fmt, ...));
-#endif /* TEST_CPUSTOP */
-
#if defined(APIC_IO)
#include <machine/md_var.h> /* setidt() */
#include <i386/isa/icu.h> /* IPIs */
@@ -434,14 +430,8 @@ bsp_apic_configure(void)
temp &= ~APIC_LVT_M; /* clear the mask */
lapic.lvt_lint1 = temp;
-#if defined(TEST_CPUSTOP)
- printf(">>> CPU%02d bsp_apic_configure() lint0: 0x%08x\n",
- cpuid, lapic.lvt_lint0);
- printf(">>> lint1: 0x%08x\n",
- lapic.lvt_lint1);
- printf(">>> TPR: 0x%08x\n", lapic.tpr);
- printf(">>> SVR: 0x%08x\n", lapic.svr);
-#endif /* TEST_CPUSTOP */
+ if (bootverbose)
+ apic_dump();
}
#endif /* APIC_IO */
@@ -479,6 +469,7 @@ mp_enable(u_int boot_addr)
default_mp_table(x);
#if defined(APIC_IO)
+
/* fill the LOGICAL io_apic_versions table */
for (apic = 0; apic < mp_napics; ++apic) {
ux = io_apic_read(apic, IOAPIC_VER);
@@ -490,6 +481,10 @@ mp_enable(u_int boot_addr)
if (io_apic_setup(apic) < 0)
panic("IO APIC setup failure");
+ /* install a 'Spurious INTerrupt' vector */
+ setidt(XSPURIOUSINT_OFFSET, Xspuriousint,
+ SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
+
/* install an inter-CPU IPI for TLB invalidation */
setidt(XINVLTLB_OFFSET, Xinvltlb,
SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
@@ -498,11 +493,14 @@ mp_enable(u_int boot_addr)
/* install an inter-CPU IPI for CPU stop/restart */
setidt(XCPUSTOP_OFFSET, Xcpustop,
SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
+#endif /** TEST_CPUSTOP */
+#if defined(TEST_TEST1)
/* install a 'Spurious INTerrupt' vector */
- setidt(XSPURIOUSINT_OFFSET, Xspuriousint,
+ setidt(XTEST1_OFFSET, Xtest1,
SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
-#endif /* TEST_CPUSTOP */
+#endif /** TEST_TEST1 */
+
#endif /* APIC_IO */
/* start each Application Processor */
@@ -1741,6 +1739,10 @@ invltlb(void)
#if defined(TEST_CPUSTOP)
+#if defined(DEBUG_CPUSTOP)
+void db_printf __P((const char *fmt, ...));
+#endif /* DEBUG_CPUSTOP */
+
/*
* When called the executing CPU will send an IPI to all other CPUs
* requesting that they halt execution.
@@ -1757,65 +1759,32 @@ invltlb(void)
*
* XXX FIXME: this is not MP-safe, needs a lock to prevent multiple CPUs
* from executing at same time.
-
*/
-extern int cshits[4];
-extern int lhits[4];
-extern int sihits;
int
stop_cpus( u_int map )
{
-#if 1
- int x, y;
-#endif
if (!smp_active)
return 0;
/* send IPI to all CPUs in map */
#if defined(DEBUG_CPUSTOP)
-#if 0
- POSTCODE(0xF0);
-#endif
db_printf("\nCPU%d stopping CPUs: 0x%08x\n", cpuid, map);
- db_printf("b4 stop: cshits: %d, %d, mplock: 0x%08x, lhits: %d, %d, sihits: %d\n",
- cshits[0], cshits[1], mp_lock, lhits[0], lhits[1], sihits);
#endif /* DEBUG_CPUSTOP */
stopped_cpus = 0;
-#if 0
+
+ /* send the Xcpustop IPI to all CPUs in map */
selected_apic_ipi(map, XCPUSTOP_OFFSET, APIC_DELMODE_FIXED);
-#else
- all_but_self_ipi(XCPUSTOP_OFFSET);
-#endif
#if defined(DEBUG_CPUSTOP)
db_printf(" spin\n");
#endif /* DEBUG_CPUSTOP */
-#if 0 /** */
- y = 0;
- while (stopped_cpus != map) {
-#if 0
+ while (stopped_cpus != map)
/* spin */ ;
-#else
- POSTCODE_LO(stopped_cpus & 0x0f);
-#define MAX_SPIN 20000000
- for ( x = 0; x < MAX_SPIN; ++x )
- ;
- if (++y > 20) {
- stopped_cpus = map;
- break;
- }
- POSTCODE_LO(0x0f);
- for ( x = 0; x < MAX_SPIN; ++x )
- ;
-#endif
- }
-#endif /** 0 */
#if defined(DEBUG_CPUSTOP)
- db_printf(" spun\nstopped, sihits: %d\n", sihits);
- cngetc();
+ db_printf(" spun\nstopped\n");
#endif /* DEBUG_CPUSTOP */
return 1;
@@ -1842,30 +1811,20 @@ restart_cpus( u_int map )
return 0;
#if defined(DEBUG_CPUSTOP)
-#if 0
- POSTCODE(0x90);
-#endif
db_printf("\nCPU%d restarting CPUs: 0x%08x (0x%08x)\n",
cpuid, map, stopped_cpus);
- db_printf("b4 restart: cshits: %d, %d, mplock: 0x%08x, lhits: %d, %d, sihits: %d\n",
- cshits[0], cshits[1], mp_lock, lhits[0], lhits[1], sihits);
#endif /* DEBUG_CPUSTOP */
started_cpus = map; /* signal other cpus to restart */
-#if 0 /** */
while (started_cpus) /* wait for each to clear its bit */
/* spin */ ;
-#endif /** 0 */
#if defined(DEBUG_CPUSTOP)
-#if 0
- POSTCODE(0xA0);
-#endif
db_printf(" restarted\n");
#endif /* DEBUG_CPUSTOP */
return 1;
}
-#endif /* TEST_CPUSTOP */
+#endif /** TEST_CPUSTOP */