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diff --git a/sys/kern/subr_physmem.c b/sys/kern/subr_physmem.c
--- a/sys/kern/subr_physmem.c
+++ b/sys/kern/subr_physmem.c
@@ -29,8 +29,10 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#ifdef _KERNEL
#include "opt_acpi.h"
#include "opt_ddb.h"
+#endif
/*
* Routines for describing and initializing anything related to physical memory.
@@ -40,12 +42,19 @@
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/physmem.h>
+
+#ifdef _KERNEL
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_page.h>
#include <vm/vm_phys.h>
#include <vm/vm_dumpset.h>
#include <machine/md_var.h>
+#else
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#endif
/*
* These structures are used internally to keep track of regions of physical
@@ -87,6 +96,20 @@
long realmem;
long Maxmem;
+#ifndef _KERNEL
+static void
+panic(const char *fmt, ...)
+{
+ va_list va;
+
+ va_start(va, fmt);
+ vfprintf(stderr, fmt, va);
+ fprintf(stderr, "\n");
+ va_end(va);
+ __builtin_trap();
+}
+#endif
+
/*
* Print the contents of the physical and excluded region tables using the
* provided printf-like output function (which will be either printf or
@@ -469,6 +492,7 @@
return (regions_to_avail(avail, EXFLAG_NOALLOC, maxavail, 0, NULL, NULL));
}
+#ifdef _KERNEL
/*
* Process all the regions added earlier into the global avail lists.
*
@@ -495,6 +519,7 @@
panic("No memory entries in phys_avail");
Maxmem = atop(phys_avail[nextidx - 1]);
}
+#endif
#ifdef DDB
#include <ddb/ddb.h>
diff --git a/tests/sys/kern/Makefile b/tests/sys/kern/Makefile
--- a/tests/sys/kern/Makefile
+++ b/tests/sys/kern/Makefile
@@ -23,6 +23,7 @@
TEST_METADATA.ptrace_test+= timeout="15"
ATF_TESTS_C+= reaper
ATF_TESTS_C+= sigaltstack
+ATF_TESTS_C+= subr_physmem_test
PLAIN_TESTS_C+= subr_unit_test
ATF_TESTS_C+= sysctl_kern_proc
ATF_TESTS_C+= sys_getrandom
@@ -78,6 +79,9 @@
SRCS.libkern_crc32+= crc32c_armv8.S
.endif
+CFLAGS.subr_physmem.c+= -D_WANT_FREEBSD_BITSET
+SRCS.subr_physmem_test+= subr_physmem_test.c subr_physmem.c
+
# subr_unit.c contains functions whose prototypes lie in headers that cannot be
# included in userland. But as far as subr_unit_test goes, they're effectively
# static. So it's ok to disable -Wmissing-prototypes for this program.
diff --git a/tests/sys/kern/subr_physmem_test.c b/tests/sys/kern/subr_physmem_test.c
new file mode 100644
--- /dev/null
+++ b/tests/sys/kern/subr_physmem_test.c
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 2021 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Andrew Turner under
+ * sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/physmem.h>
+
+#include <atf-c.h>
+
+ATF_TC_WITHOUT_HEAD(hwregion);
+ATF_TC_BODY(hwregion, tc)
+{
+ vm_paddr_t avail[4];
+ size_t len;
+
+ physmem_hardware_region(2 * PAGE_SIZE, PAGE_SIZE);
+
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 3 * PAGE_SIZE);
+
+ /* Add an overlap */
+ physmem_hardware_region(2 * PAGE_SIZE, 2 * PAGE_SIZE);
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 4 * PAGE_SIZE);
+
+ /* Add a touching region */
+ physmem_hardware_region(4 * PAGE_SIZE, PAGE_SIZE);
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 5 * PAGE_SIZE);
+
+ /* Add a partial overlap */
+ physmem_hardware_region(4 * PAGE_SIZE, 2 * PAGE_SIZE);
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 6 * PAGE_SIZE);
+
+ /* Add a non-page aligned section */
+ physmem_hardware_region(6 * PAGE_SIZE, PAGE_SIZE / 2);
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 6 * PAGE_SIZE);
+
+#ifdef notyet /* This doesn't currently work */
+ /* Add the remaining part of the page */
+ physmem_hardware_region(6 * PAGE_SIZE + PAGE_SIZE / 2, PAGE_SIZE / 2);
+ len = physmem_avail(avail, 4);
+ ATF_CHECK_EQ(len, 2);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 7 * PAGE_SIZE);
+#endif
+}
+
+ATF_TC_WITHOUT_HEAD(hwregion_exclude);
+ATF_TC_BODY(hwregion_exclude, tc)
+{
+ vm_paddr_t avail[6];
+ size_t len;
+
+ physmem_hardware_region(2 * PAGE_SIZE, 5 * PAGE_SIZE);
+ physmem_exclude_region(4 * PAGE_SIZE, PAGE_SIZE, EXFLAG_NOALLOC);
+
+ len = physmem_avail(avail, 6);
+ ATF_CHECK_EQ(len, 4);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 4 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[2], 5 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[3], 7 * PAGE_SIZE);
+
+ /* Check mis-aligned/sized excluded regions work */
+ physmem_exclude_region(4 * PAGE_SIZE - 1, PAGE_SIZE + 2,
+ EXFLAG_NOALLOC);
+ len = physmem_avail(avail, 6);
+ ATF_CHECK_EQ(len, 4);
+ ATF_CHECK_EQ(avail[0], 2 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[1], 3 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[2], 6 * PAGE_SIZE);
+ ATF_CHECK_EQ(avail[3], 7 * PAGE_SIZE);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+ ATF_TP_ADD_TC(tp, hwregion);
+ ATF_TP_ADD_TC(tp, hwregion_exclude);
+ return (atf_no_error());
+}

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