diff options
| author | fsmp <fsmp@FreeBSD.org> | 1997-07-15 02:47:54 +0000 |
|---|---|---|
| committer | fsmp <fsmp@FreeBSD.org> | 1997-07-15 02:47:54 +0000 |
| commit | e8a415386f1da7c5292cc35bee3f56bd6329744e (patch) | |
| tree | fca589216fd44819394c7b542b87b326392c9428 /sys/amd64/include/apicreg.h | |
| parent | dd0a098be8e408ee41a9b5ea1134338e6228a281 (diff) | |
| download | FreeBSD-src-e8a415386f1da7c5292cc35bee3f56bd6329744e.zip FreeBSD-src-e8a415386f1da7c5292cc35bee3f56bd6329744e.tar.gz | |
New defines to eliminate "magic numbers" in various places.
Diffstat (limited to 'sys/amd64/include/apicreg.h')
| -rw-r--r-- | sys/amd64/include/apicreg.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/sys/amd64/include/apicreg.h b/sys/amd64/include/apicreg.h index c70a9ed..b3bd820 100644 --- a/sys/amd64/include/apicreg.h +++ b/sys/amd64/include/apicreg.h @@ -22,7 +22,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: apic.h,v 1.2 1997/07/08 23:29:48 smp Exp smp $ + * $Id: apic.h,v 1.3 1997/07/15 00:09:00 smp Exp smp $ */ #ifndef _MACHINE_APIC_H_ @@ -213,7 +213,27 @@ typedef struct IOAPIC ioapic_t; #undef PAD4 #undef PAD3 -#endif /* LOCORE */ +#endif /* !LOCORE */ + + +/****************************************************************************** + * various code 'logical' values + */ + +#define LOPRIO_LEVEL 0x00000010 /* TPR of CPUs accepting INT */ + +/* XXX these 2 don't really belong here... */ +#define COUNT_FIELD 0x00ffffff /* count portion of the lock */ +#define FREE_LOCK 0xffffffff /* value of lock when free */ + +/* + * XXX This code assummes that the reserved field of the + * local APIC TPR can be written with all 0s. + * This saves quite a few memory accesses. + * If the silicon ever changes then things will break! + * It affects mplock.s, swtch.s, and possibly other files. + */ +#define CHEAP_TPR /****************************************************************************** |
