From: Jack Steiner <steiner@sgi.com>
Date: Wed, 16 Dec 2009 00:48:04 +0000 (-0800)
Subject: gru: allow users to specify gru chiplet 1
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=518e5cd4aae476042bdee511e0e00c8670c0df42;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

gru: allow users to specify gru chiplet 1

Add table & user request infrastructure that is needed to allow users to
specify the blade and chiplet for allocation of GRU contexts.  Use of this
information is in a subsequent patch.

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/grufault.c b/drivers/misc/sgi-gru/grufault.c
index a9f0cf483005..a69d119921ff 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -763,6 +763,16 @@ int gru_set_context_option(unsigned long arg)
 		return -EINVAL;
 
 	switch (req.op) {
+	case sco_blade_chiplet:
+		/* Select blade/chiplet for GRU context */
+		if (req.val1 < -1 || req.val1 >= GRU_MAX_BLADES || !gru_base[req.val1] ||
+		    req.val0 < -1 || req.val0 >= GRU_CHIPLETS_PER_HUB) {
+			ret = -EINVAL;
+		} else {
+			gts->ts_user_blade_id = req.val1;
+			gts->ts_user_chiplet_id = req.val0;
+		}
+		break;
 	case sco_gseg_owner:
  		/* Register the current task as the GSEG owner */
 		gts->ts_tgid_owner = current->tgid;
diff --git a/drivers/misc/sgi-gru/grulib.h b/drivers/misc/sgi-gru/grulib.h
index 889bc442a3e8..e94ee2b8bd64 100644
--- a/drivers/misc/sgi-gru/grulib.h
+++ b/drivers/misc/sgi-gru/grulib.h
@@ -98,11 +98,12 @@ struct gru_unload_context_req {
 /*
  * Structure used to set context options
  */
-enum {sco_gseg_owner, sco_cch_req_slice};
+enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};
 struct gru_set_context_option_req {
 	unsigned long	gseg;
 	int		op;
-	unsigned long	val1;
+	int		val0;
+	long		val1;
 };
 
 /*
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 3bc643dad606..f449c2dbc1e3 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -328,6 +328,8 @@ struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma,
 	gts->ts_cbr_au_count = cbr_au_count;
 	gts->ts_dsr_au_count = dsr_au_count;
 	gts->ts_user_options = options;
+	gts->ts_user_blade_id = -1;
+	gts->ts_user_chiplet_id = -1;
 	gts->ts_tsid = tsid;
 	gts->ts_ctxnum = NULLCTX;
 	gts->ts_tlb_int_select = -1;
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index f7b553a56ed0..27131fb2253f 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -369,6 +369,8 @@ struct gru_thread_state {
 	long			ts_user_options;/* misc user option flags */
 	pid_t			ts_tgid_owner;	/* task that is using the
 						   context - for migration */
+	short			ts_user_blade_id;/* user selected blade */
+	char			ts_user_chiplet_id;/* user selected chiplet */
 	unsigned short		ts_sizeavail;	/* Pagesizes in use */
 	int			ts_tsid;	/* thread that owns the
 						   structure */