[dpdk-stable] patch 'net/qede/base: fix number of ports per engine' has been queued to stable release 19.11.1

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 19.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/13/20. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Thanks.

Luca Boccassi

---
>From cc04f2115dc3beb9b3f0313d8928eb65d7acf852 Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rmody at marvell.com>
Date: Fri, 20 Dec 2019 17:34:51 -0800
Subject: [PATCH] net/qede/base: fix number of ports per engine

[ upstream commit 117e4a77bada8337c9fec3f44d4e2c228c6fbd7c ]

Fix the way in which the number of ports per engine of an adapter is
determined by reading port mode register. Set default value to 1.

Fixes: 3b307c55f2ac ("net/qede/base: update FW to 8.40.25.0")

Signed-off-by: Rasesh Mody <rmody at marvell.com>
---
 drivers/net/qede/base/ecore_dev.c | 38 ++++++++++++++++++++++---------
 1 file changed, 27 insertions(+), 11 deletions(-)

diff --git a/drivers/net/qede/base/ecore_dev.c b/drivers/net/qede/base/ecore_dev.c
index 9d1db14590..f33b9910c0 100644
--- a/drivers/net/qede/base/ecore_dev.c
+++ b/drivers/net/qede/base/ecore_dev.c
@@ -5253,7 +5253,6 @@ static void ecore_emul_hw_info_port_num(struct ecore_hwfn *p_hwfn,
 
 	/* MISCS_REG_ECO_RESERVED[15:12]: num of ports in an engine */
 	eco_reserved = ecore_rd(p_hwfn, p_ptt, MISCS_REG_ECO_RESERVED);
-
 	switch ((eco_reserved & 0xf000) >> 12) {
 		case 1:
 			p_dev->num_ports_in_engine = 1;
@@ -5268,7 +5267,7 @@ static void ecore_emul_hw_info_port_num(struct ecore_hwfn *p_hwfn,
 			DP_NOTICE(p_hwfn, false,
 			  "Emulation: Unknown port mode [ECO_RESERVED 0x%08x]\n",
 			  eco_reserved);
-		p_dev->num_ports_in_engine = 2; /* Default to something */
+		p_dev->num_ports_in_engine = 1; /* Default to something */
 		break;
 		}
 
@@ -5281,8 +5280,8 @@ static void ecore_emul_hw_info_port_num(struct ecore_hwfn *p_hwfn,
 static void ecore_hw_info_port_num(struct ecore_hwfn *p_hwfn,
 				   struct ecore_ptt *p_ptt)
 {
+	u32 addr, global_offsize, global_addr, port_mode;
 	struct ecore_dev *p_dev = p_hwfn->p_dev;
-	u32 addr, global_offsize, global_addr;
 
 #ifndef ASIC_ONLY
 	if (CHIP_REV_IS_TEDIBEAR(p_dev)) {
@@ -5304,15 +5303,32 @@ static void ecore_hw_info_port_num(struct ecore_hwfn *p_hwfn,
 		return;
 	}
 
-		addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
-					    PUBLIC_GLOBAL);
-		global_offsize = ecore_rd(p_hwfn, p_ptt, addr);
-		global_addr = SECTION_ADDR(global_offsize, 0);
-		addr = global_addr + OFFSETOF(struct public_global, max_ports);
-		p_dev->num_ports = (u8)ecore_rd(p_hwfn, p_ptt, addr);
+	/* Determine the number of ports per engine */
+	port_mode = ecore_rd(p_hwfn, p_ptt, MISC_REG_PORT_MODE);
+	switch (port_mode) {
+	case 0x0:
+		p_dev->num_ports_in_engine = 1;
+		break;
+	case 0x1:
+		p_dev->num_ports_in_engine = 2;
+		break;
+	case 0x2:
+		p_dev->num_ports_in_engine = 4;
+		break;
+	default:
+		DP_NOTICE(p_hwfn, false, "Unknown port mode 0x%08x\n",
+			  port_mode);
+		p_dev->num_ports_in_engine = 1; /* Default to something */
+		break;
+	}
 
-	p_dev->num_ports_in_engine = p_dev->num_ports >>
-				     (ecore_device_num_engines(p_dev) - 1);
+	/* Get the total number of ports of the device */
+	addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
+				    PUBLIC_GLOBAL);
+	global_offsize = ecore_rd(p_hwfn, p_ptt, addr);
+	global_addr = SECTION_ADDR(global_offsize, 0);
+	addr = global_addr + OFFSETOF(struct public_global, max_ports);
+	p_dev->num_ports = (u8)ecore_rd(p_hwfn, p_ptt, addr);
 }
 
 static void ecore_mcp_get_eee_caps(struct ecore_hwfn *p_hwfn,
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2020-02-11 11:17:41.867632379 +0000
+++ 0084-net-qede-base-fix-number-of-ports-per-engine.patch	2020-02-11 11:17:38.524003666 +0000
@@ -1,13 +1,14 @@
-From 117e4a77bada8337c9fec3f44d4e2c228c6fbd7c Mon Sep 17 00:00:00 2001
+From cc04f2115dc3beb9b3f0313d8928eb65d7acf852 Mon Sep 17 00:00:00 2001
 From: Rasesh Mody <rmody at marvell.com>
 Date: Fri, 20 Dec 2019 17:34:51 -0800
 Subject: [PATCH] net/qede/base: fix number of ports per engine
 
+[ upstream commit 117e4a77bada8337c9fec3f44d4e2c228c6fbd7c ]
+
 Fix the way in which the number of ports per engine of an adapter is
 determined by reading port mode register. Set default value to 1.
 
 Fixes: 3b307c55f2ac ("net/qede/base: update FW to 8.40.25.0")
-Cc: stable at dpdk.org
 
 Signed-off-by: Rasesh Mody <rmody at marvell.com>
 ---