svn commit: r221790 - projects/largeSMP/sys/sparc64/sparc64

[Marius Strobl]

Author: marius
Date: Wed May 11 21:10:43 2011
New Revision: 221790
URL: http://svn.freebsd.org/changeset/base/221790

Log:
  Update for the fact that pm_active and pc_cpumask were changed to cpuset_t.
  This now calculates pc_cpumask based on pc_cpuid itself as the former is
  slated for being deorbited.
  This branch now at least boots UP again. MP needs more things converted and
  the existing conversion from cpumask_t to cpuset_t still has bugs.

Modified:
  projects/largeSMP/sys/sparc64/sparc64/genassym.c
  projects/largeSMP/sys/sparc64/sparc64/swtch.S

Modified: projects/largeSMP/sys/sparc64/sparc64/genassym.c
==============================================================================
--- projects/largeSMP/sys/sparc64/sparc64/genassym.c	Wed May 11 20:31:27 2011	(r221789)
+++ projects/largeSMP/sys/sparc64/sparc64/genassym.c	Wed May 11 21:10:43 2011	(r221790)
@@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/proc.h>
 #include <sys/smp.h>
 #include <sys/vmmeter.h>
+#include <sys/_cpuset.h>
 
 #include <vm/vm.h>
 #include <vm/vm_page.h>
@@ -66,6 +67,8 @@ ASSYM(PCPU_PAGES, PCPU_PAGES);
 
 ASSYM(TAR_VPN_SHIFT, TAR_VPN_SHIFT);
 
+ASSYM(_NCPUBITS, _NCPUBITS);
+
 #ifdef SUN4U
 ASSYM(TLB_DEMAP_ALL, TLB_DEMAP_ALL);
 #endif

Modified: projects/largeSMP/sys/sparc64/sparc64/swtch.S
==============================================================================
--- projects/largeSMP/sys/sparc64/sparc64/swtch.S	Wed May 11 20:31:27 2011	(r221789)
+++ projects/largeSMP/sys/sparc64/sparc64/swtch.S	Wed May 11 21:10:43 2011	(r221790)
@@ -164,20 +164,29 @@ ENTRY(cpu_switch)
 	 * If there was no non-kernel pmap, don't try to deactivate it.
 	 */
 	brz,pn	%l2, 3f
-	 lduw	[PCPU(CPUMASK)], %l4
+	 lduw	[PCPU(CPUID)], %l3
 
 	/*
 	 * Mark the pmap of the last non-kernel vmspace to run as no longer
 	 * active on this CPU.
 	 */
-	lduw	[%l2 + PM_ACTIVE], %l3
-	andn	%l3, %l4, %l3
-	stw	%l3, [%l2 + PM_ACTIVE]
+	mov	_NCPUBITS, %l5
+	mov	%g0, %y
+	udiv	%l3, %l5, %l6
+	srl	%l6, 0, %l4
+	sllx	%l4, PTR_SHIFT, %l4
+	add	%l4, PM_ACTIVE, %l4
+	smul	%l6, %l5, %l5
+	sub	%l3, %l5, %l5
+	mov	1, %l6
+	sllx	%l6, %l5, %l5
+	ldx	[%l2 + %l4], %l6
+	andn	%l6, %l5, %l6
+	stx	%l6, [%l2 + %l4]
 
 	/*
 	 * Take away its context number.
 	 */
-	lduw	[PCPU(CPUID)], %l3
 	sllx	%l3, INT_SHIFT, %l3
 	add	%l2, PM_CONTEXT, %l4
 	mov	-1, %l5
@@ -210,18 +219,27 @@ ENTRY(cpu_switch)
 	/*
 	 * Set the new context number in the pmap.
 	 */
-	lduw	[PCPU(CPUID)], %i4
-	sllx	%i4, INT_SHIFT, %i4
+	lduw	[PCPU(CPUID)], %l3
+	sllx	%l3, INT_SHIFT, %i4
 	add	%l1, PM_CONTEXT, %i5
 	stw	%i3, [%i4 + %i5]
 
 	/*
 	 * Mark the pmap as active on this CPU.
 	 */
-	lduw	[%l1 + PM_ACTIVE], %i4
-	lduw	[PCPU(CPUMASK)], %i5
-	or	%i4, %i5, %i4
-	stw	%i4, [%l1 + PM_ACTIVE]
+	mov	_NCPUBITS, %l5
+	mov	%g0, %y
+	udiv	%l3, %l5, %l6
+	srl	%l6, 0, %l4
+	sllx	%l4, PTR_SHIFT, %l4
+	add	%l4, PM_ACTIVE, %l4
+	smul	%l6, %l5, %l5
+	sub	%l3, %l5, %l5
+	mov	1, %l6
+	sllx	%l6, %l5, %l5
+	ldx	[%l1 + %l4], %l6
+	or	%l6, %l5, %l6
+	stx	%l6, [%l1 + %l4]
 
 	/*
 	 * Make note of the change in pmap.