sgi-gru: macro for scanning all gru chiplets
Add macro for scanning all active GRU chiplets. Maximum chiplet id is
saved during GRU initialization.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 685db88..c6e0e3d 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -153,6 +153,7 @@
extern struct gru_stats_s gru_stats;
extern struct gru_blade_state *gru_base[];
extern unsigned long gru_start_paddr, gru_end_paddr;
+extern unsigned int gru_max_gids;
#define GRU_MAX_BLADES MAX_NUMNODES
#define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE)
@@ -406,12 +407,12 @@
gru segments (64) */
void *gs_gru_base_vaddr; /* Virtual address of
gru segments (64) */
- unsigned char gs_gid; /* unique GRU number */
+ unsigned short gs_gid; /* unique GRU number */
+ unsigned short gs_blade_id; /* blade of GRU */
unsigned char gs_tgh_local_shift; /* used to pick TGH for
local flush */
unsigned char gs_tgh_first_remote; /* starting TGH# for
remote flush */
- unsigned short gs_blade_id; /* blade of GRU */
spinlock_t gs_asid_lock; /* lock used for
assigning asids */
spinlock_t gs_lock; /* lock used for
@@ -506,6 +507,10 @@
(i) < GRU_CHIPLETS_PER_BLADE; \
(i)++, (gru)++)
+/* Scan all GRUs */
+#define foreach_gid(gid) \
+ for ((gid) = 0; (gid) < gru_max_gids; (gid)++)
+
/* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */
#define for_each_gts_on_gru(gts, gru, ctxnum) \
for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \