From 198729ea7df0ededb29f6419e26a2e628897815b Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Mon, 26 Feb 2018 21:56:06 +0000
Subject: [PATCH] Fetch TLS key parameters from the firmware.

The parameters describe how much of the adapter's memory is reserved for
storing TLS keys.  The 'meminfo' sysctl now lists this region of adapter
memory as 'TLS keys' if present.

Sponsored by:	Chelsio Communications
---
 sys/dev/cxgbe/offload.h |  1 +
 sys/dev/cxgbe/t4_main.c | 21 ++++++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/sys/dev/cxgbe/offload.h b/sys/dev/cxgbe/offload.h
index b9ee9a18631..33baf5e0dc4 100644
--- a/sys/dev/cxgbe/offload.h
+++ b/sys/dev/cxgbe/offload.h
@@ -126,6 +126,7 @@ struct t4_virt_res {                      /* virtualized HW resources */
 	struct t4_range srq;
 	struct t4_range ocq;
 	struct t4_range l2t;
+	struct t4_range key;
 };
 
 enum {
diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c
index f93e3960e5d..1896d35ac4b 100644
--- a/sys/dev/cxgbe/t4_main.c
+++ b/sys/dev/cxgbe/t4_main.c
@@ -3662,6 +3662,18 @@ get_params__post_init(struct adapter *sc)
 		sc->vres.iscsi.start = val[0];
 		sc->vres.iscsi.size = val[1] - val[0] + 1;
 	}
+	if (sc->cryptocaps & FW_CAPS_CONFIG_TLSKEYS) {
+		param[0] = FW_PARAM_PFVF(TLS_START);
+		param[1] = FW_PARAM_PFVF(TLS_END);
+		rc = -t4_query_params(sc, sc->mbox, sc->pf, 0, 2, param, val);
+		if (rc != 0) {
+			device_printf(sc->dev,
+			    "failed to query TLS parameters: %d.\n", rc);
+			return (rc);
+		}
+		sc->vres.key.start = val[0];
+		sc->vres.key.size = val[1] - val[0] + 1;
+	}
 
 	t4_init_sge_params(sc);
 
@@ -7006,7 +7018,7 @@ sysctl_meminfo(SYSCTL_HANDLER_ARGS)
 		"TDDP region:", "TPT region:", "STAG region:", "RQ region:",
 		"RQUDP region:", "PBL region:", "TXPBL region:",
 		"DBVFIFO region:", "ULPRX state:", "ULPTX state:",
-		"On-chip queues:"
+		"On-chip queues:", "TLS keys:",
 	};
 	struct mem_desc avail[4];
 	struct mem_desc mem[nitems(region) + 3];	/* up to 3 holes */
@@ -7146,6 +7158,13 @@ sysctl_meminfo(SYSCTL_HANDLER_ARGS)
 		md->idx = nitems(region);  /* hide it */
 	md++;
 
+	md->base = sc->vres.key.start;
+	if (sc->vres.key.size)
+		md->limit = md->base + sc->vres.key.size - 1;
+	else
+		md->idx = nitems(region);  /* hide it */
+	md++;
+
 	/* add any address-space holes, there can be up to 3 */
 	for (n = 0; n < i - 1; n++)
 		if (avail[n].limit < avail[n + 1].base)