OpenSolaris Launch

1 files changed, 166 insertions, 0 deletions

diff --git a/usr/src/uts/sun4v/os/cpc_subr.c b/usr/src/uts/sun4v/os/cpc_subr.c
new file mode 100644
index 0000000000..421b59314c
--- /dev/null
+++ b/usr/src/uts/sun4v/os/cpc_subr.c
@@ -0,0 +1,166 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * sun4u common CPC subroutines.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/atomic.h>
+#include <sys/thread.h>
+#include <sys/regset.h>
+#include <sys/archsystm.h>
+#include <sys/machsystm.h>
+#include <sys/cpc_impl.h>
+#include <sys/cpc_ultra.h>
+#include <sys/sunddi.h>
+#include <sys/intr.h>
+#include <sys/ivintr.h>
+#include <sys/x_call.h>
+#include <sys/cpuvar.h>
+#include <sys/machcpuvar.h>
+#include <sys/cpc_pcbe.h>
+#include <sys/modctl.h>
+#include <sys/sdt.h>
+
+uint32_t		cpc_level15_inum;	/* used in interrupt.s */
+int			cpc_has_overflow_intr;	/* set in cheetah.c */
+
+extern kcpc_ctx_t *kcpc_overflow_intr(caddr_t arg, uint64_t bitmap);
+extern int kcpc_counts_include_idle;
+
+/*
+ * Called on the boot CPU during startup.
+ */
+void
+kcpc_hw_init(void)
+{
+	if (cpc_has_overflow_intr) {
+		cpc_level15_inum = add_softintr(PIL_15,
+		    kcpc_hw_overflow_intr, NULL);
+	}
+
+	/*
+	 * Make sure the boot CPU gets set up.
+	 */
+	kcpc_hw_startup_cpu(CPU->cpu_flags);
+}
+
+/*
+ * Prepare for CPC interrupts and install an idle thread CPC context.
+ */
+void
+kcpc_hw_startup_cpu(ushort_t cpflags)
+{
+	cpu_t		*cp = CPU;
+	kthread_t	*t = cp->cpu_idle_thread;
+
+	ASSERT(t->t_bound_cpu == cp);
+
+	if (cpc_has_overflow_intr && (cpflags & CPU_FROZEN) == 0) {
+		int pstate_save = disable_vec_intr();
+
+		ASSERT(cpc_level15_inum != 0);
+
+		intr_enqueue_req(PIL_15, cpc_level15_inum);
+		enable_vec_intr(pstate_save);
+	}
+
+	mutex_init(&cp->cpu_cpc_ctxlock, "cpu_cpc_ctxlock", MUTEX_DEFAULT, 0);
+
+	if (kcpc_counts_include_idle)
+		return;
+
+	installctx(t, cp, kcpc_idle_save, kcpc_idle_restore, NULL, NULL,
+	    NULL, NULL);
+}
+
+/*
+ * Examine the processor and load an appropriate PCBE.
+ */
+int
+kcpc_hw_load_pcbe(void)
+{
+	char		modname[MODMAXNAMELEN+1];
+	char		*p, *q;
+	int		len, stat;
+	extern char	*boot_cpu_compatible_list;
+
+	for (stat = -1, p = boot_cpu_compatible_list; p != NULL; p = q) {
+		/*
+		 * Get next CPU module name from boot_cpu_compatible_list
+		 */
+		q = strchr(p, ':');
+		len = (q) ? (q - p) : strlen(p);
+		if (len < sizeof (modname)) {
+			(void) strncpy(modname, p, len);
+			modname[len] = '\0';
+			stat = kcpc_pcbe_tryload(modname, 0, 0, 0);
+			if (stat == 0)
+				break;
+		}
+		if (q)
+			q++;			/* skip over ':' */
+	}
+	return (stat);
+
+}
+
+/*ARGSUSED*/
+static void
+kcpc_remotestop_func(uint64_t arg1, uint64_t arg2)
+{
+	ASSERT(CPU->cpu_cpc_ctx != NULL);
+	pcbe_ops->pcbe_allstop();
+	atomic_or_uint(&CPU->cpu_cpc_ctx->kc_flags, KCPC_CTX_INVALID_STOPPED);
+}
+
+/*
+ * Ensure the counters are stopped on the given processor.
+ *
+ * Callers must ensure kernel preemption is disabled.
+ */
+void
+kcpc_remote_stop(cpu_t *cp)
+{
+	xc_one(cp->cpu_id, kcpc_remotestop_func, 0, 0);
+}
+
+/*ARGSUSED*/
+int
+kcpc_hw_cpu_hook(processorid_t cpuid, ulong_t *kcpc_cpumap)
+{
+	return (0);
+}
+
+int
+kcpc_hw_lwp_hook(void)
+{
+	return (0);
+}