Date: Sat, 26 Sep 2009 15:14:15 GMT From: Justin Hibbits <jrh29@alumni.cwru.edu> To: freebsd-gnats-submit@FreeBSD.org Subject: powerpc/139154: Patch for Altivec sysctl Message-ID: <200909261514.n8QFEFGK065301@www.freebsd.org> Resent-Message-ID: <200909261520.n8QFK28T073290@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 139154
>Category: powerpc
>Synopsis: Patch for Altivec sysctl
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ppc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Sep 26 15:20:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Justin Hibbits
>Release: 9.0-CURRENT
>Organization:
>Environment:
FreeBSD narn.knownspace 9.0-CURRENT FreeBSD 9.0-CURRENT #24 r197331M: Sun Sep 20 22:08:18 EDT 2009 root@narn.knownspace:/usr/obj/usr/src/sys/NARN powerpc
>Description:
The attached patch adds a 'machdep.altivec' sysctl, similar to OpenBSD's. This is necessary for ports that use altivec conditionally, including x264, the inspiration for this patch.
>How-To-Repeat:
>Fix:
Patch attached with submission follows:
Index: powerpc/cpu.c
===================================================================
--- powerpc/cpu.c (revision 197331)
+++ powerpc/cpu.c (working copy)
@@ -67,6 +67,7 @@
#include <sys/sysctl.h>
#include <machine/bus.h>
+#include <machine/cpu.h>
#include <machine/hid.h>
#include <machine/md_var.h>
#include <machine/spr.h>
@@ -110,7 +111,9 @@
};
static char model[64];
+static int ppc_altivec;
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
+SYSCTL_INT(_machdep, CPU_ALTIVEC, altivec, CTLFLAG_RD, &ppc_altivec, 0, "");
register_t l2cr_config = 0;
register_t l3cr_config = 0;
@@ -288,6 +291,24 @@
break;
}
+ switch (vers) {
+ case MPC7400:
+ case MPC7450:
+ case MPC7455:
+ case MPC7457:
+ case MPC7447A:
+ case MPC7448:
+ case MPC7410:
+ case IBM970:
+ case IBM970FX:
+ case IBM970MP:
+ case IBM970GX:
+ ppc_altivec=1;
+ break;
+ default:
+ ppc_altivec=0;
+ }
+
printf("cpu%d: HID0 %b\n", cpuid, hid0, bitmask);
}
Index: include/cpu.h
===================================================================
--- include/cpu.h (revision 197331)
+++ include/cpu.h (working copy)
@@ -49,6 +49,7 @@
* CTL_MACHDEP definitions.
*/
#define CPU_CACHELINE 1
+#define CPU_ALTIVEC 2
static __inline u_int64_t
get_cyclecount(void)
>Release-Note:
>Audit-Trail:
>Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200909261514.n8QFEFGK065301>