Author: jhb
Date: Fri Aug 29 21:25:47 2014
New Revision: 270828
URL: http://svnweb.freebsd.org/changeset/base/270828
Log:
- Add a new structure type for the ACPI 3.0 SMAP entry that includes the
optional attributes field.
- Add a 'machdep.smap' sysctl that exports the SMAP table of the running
system as an array of the ACPI 3.0 structure. (On older systems, the
attributes are given a value of zero.) Note that the sysctl only
exports the SMAP table if it is available via the metadata passed from
the loader to the kernel. If an SMAP is not available, an empty array
is returned.
- Add a format handler for the ACPI 3.0 SMAP structure to the sysctl(8)
binary to format the SMAP structures in a readable format similar to
the format found in boot messages.
MFC after: 2 weeks
Modified:
head/sbin/sysctl/sysctl.c
head/sys/amd64/amd64/machdep.c
head/sys/amd64/include/pc/bios.h
head/sys/i386/i386/machdep.c
head/sys/i386/include/pc/bios.h
Modified: head/sbin/sysctl/sysctl.c
==============================================================================
--- head/sbin/sysctl/sysctl.c Fri Aug 29 21:20:36 2014 (r270827)
+++ head/sbin/sysctl/sysctl.c Fri Aug 29 21:25:47 2014 (r270828)
@@ -48,6 +48,10 @@ static const char rcsid[] =
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
+#if defined(__amd64__) || defined(__i386__)
+#include <machine/pc/bios.h>
+#endif
+
#include <ctype.h>
#include <err.h>
#include <errno.h>
@@ -541,6 +545,27 @@ S_vmtotal(int l2, void *p)
return (0);
}
+#if defined(__amd64__) || defined(__i386__)
+static int
+S_bios_smap_xattr(int l2, void *p)
+{
+ struct bios_smap_xattr *smap, *end;
+
+ if (l2 % sizeof(*smap) != 0) {
+ warnx("S_bios_smap_xattr %d is not a multiple of %zu", l2,
+ sizeof(*smap));
+ return (1);
+ }
+
+ end = (struct bios_smap_xattr *)((char *)p + l2);
+ for (smap = p; smap < end; smap++)
+ printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
+ smap->type, smap->xattr, (uintmax_t)smap->base,
+ (uintmax_t)smap->length);
+ return (0);
+}
+#endif
+
static int
set_IK(const char *str, int *val)
{
@@ -793,6 +818,10 @@ show_var(int *oid, int nlen)
func = S_loadavg;
else if (strcmp(fmt, "S,vmtotal") == 0)
func = S_vmtotal;
+#if defined(__amd64__) || defined(__i386__)
+ else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
+ func = S_bios_smap_xattr;
+#endif
else
func = NULL;
if (func) {
Modified: head/sys/amd64/amd64/machdep.c
==============================================================================
--- head/sys/amd64/amd64/machdep.c Fri Aug 29 21:20:36 2014
(r270827)
+++ head/sys/amd64/amd64/machdep.c Fri Aug 29 21:25:47 2014
(r270828)
@@ -2090,6 +2090,42 @@ cpu_pcpu_init(struct pcpu *pcpu, int cpu
pcpu->pc_acpi_id = 0xffffffff;
}
+static int
+smap_sysctl_handler(SYSCTL_HANDLER_ARGS)
+{
+ struct bios_smap *smapbase;
+ struct bios_smap_xattr smap;
+ caddr_t kmdp;
+ uint32_t *smapattr;
+ int count, error, i;
+
+ /* Retrieve the system memory map from the loader. */
+ kmdp = preload_search_by_type("elf kernel");
+ if (kmdp == NULL)
+ kmdp = preload_search_by_type("elf64 kernel");
+ smapbase = (struct bios_smap *)preload_search_info(kmdp,
+ MODINFO_METADATA | MODINFOMD_SMAP);
+ if (smapbase == NULL)
+ return (0);
+ smapattr = (uint32_t *)preload_search_info(kmdp,
+ MODINFO_METADATA | MODINFOMD_SMAP_XATTR);
+ count = *((uint32_t *)smapbase - 1) / sizeof(*smapbase);
+ error = 0;
+ for (i = 0; i < count; i++) {
+ smap.base = smapbase[i].base;
+ smap.length = smapbase[i].length;
+ smap.type = smapbase[i].type;
+ if (smapattr != NULL)
+ smap.xattr = smapattr[i];
+ else
+ smap.xattr = 0;
+ error = SYSCTL_OUT(req, &smap, sizeof(smap));
+ }
+ return (error);
+}
+SYSCTL_PROC(_machdep, OID_AUTO, smap, CTLTYPE_OPAQUE|CTLFLAG_RD, NULL, 0,
+ smap_sysctl_handler, "S,bios_smap_xattr", "Raw BIOS SMAP data");
+
void
spinlock_enter(void)
{
Modified: head/sys/amd64/include/pc/bios.h
==============================================================================
--- head/sys/amd64/include/pc/bios.h Fri Aug 29 21:20:36 2014
(r270827)
+++ head/sys/amd64/include/pc/bios.h Fri Aug 29 21:25:47 2014
(r270828)
@@ -51,6 +51,14 @@ struct bios_smap {
u_int32_t type;
} __packed;
+/* Structure extended to include extended attribute field in ACPI 3.0. */
+struct bios_smap_xattr {
+ u_int64_t base;
+ u_int64_t length;
+ u_int32_t type;
+ u_int32_t xattr;
+} __packed;
+
/*
* System Management BIOS
*/
Modified: head/sys/i386/i386/machdep.c
==============================================================================
--- head/sys/i386/i386/machdep.c Fri Aug 29 21:20:36 2014
(r270827)
+++ head/sys/i386/i386/machdep.c Fri Aug 29 21:25:47 2014
(r270828)
@@ -3122,6 +3122,42 @@ cpu_pcpu_init(struct pcpu *pcpu, int cpu
pcpu->pc_acpi_id = 0xffffffff;
}
+static int
+smap_sysctl_handler(SYSCTL_HANDLER_ARGS)
+{
+ struct bios_smap *smapbase;
+ struct bios_smap_xattr smap;
+ caddr_t kmdp;
+ uint32_t *smapattr;
+ int count, error, i;
+
+ /* Retrieve the system memory map from the loader. */
+ kmdp = preload_search_by_type("elf kernel");
+ if (kmdp == NULL)
+ kmdp = preload_search_by_type("elf32 kernel");
+ smapbase = (struct bios_smap *)preload_search_info(kmdp,
+ MODINFO_METADATA | MODINFOMD_SMAP);
+ if (smapbase == NULL)
+ return (0);
+ smapattr = (uint32_t *)preload_search_info(kmdp,
+ MODINFO_METADATA | MODINFOMD_SMAP_XATTR);
+ count = *((u_int32_t *)smapbase - 1) / sizeof(*smapbase);
+ error = 0;
+ for (i = 0; i < count; i++) {
+ smap.base = smapbase[i].base;
+ smap.length = smapbase[i].length;
+ smap.type = smapbase[i].type;
+ if (smapattr != NULL)
+ smap.xattr = smapattr[i];
+ else
+ smap.xattr = 0;
+ error = SYSCTL_OUT(req, &smap, sizeof(smap));
+ }
+ return (error);
+}
+SYSCTL_PROC(_machdep, OID_AUTO, smap, CTLTYPE_OPAQUE|CTLFLAG_RD, NULL, 0,
+ smap_sysctl_handler, "S,bios_smap_xattr", "Raw BIOS SMAP data");
+
void
spinlock_enter(void)
{
Modified: head/sys/i386/include/pc/bios.h
==============================================================================
--- head/sys/i386/include/pc/bios.h Fri Aug 29 21:20:36 2014
(r270827)
+++ head/sys/i386/include/pc/bios.h Fri Aug 29 21:25:47 2014
(r270828)
@@ -221,6 +221,14 @@ struct bios_smap {
u_int32_t type;
} __packed;
+/* Structure extended to include extended attribute field in ACPI 3.0. */
+struct bios_smap_xattr {
+ u_int64_t base;
+ u_int64_t length;
+ u_int32_t type;
+ u_int32_t xattr;
+} __packed;
+
/*
* System Management BIOS
*/
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