This is a note to let you know that I've just added the patch titled
net/ncsi: add NCSI Intel OEM command to keep PHY up
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ncsi-add-ncsi-intel-oem-command-to-keep-phy-up.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b0a3b3c8bc325c609bfcf492eed91d0d4aa695ea
Author: Ivan Mikhaylov <i.mikhaylov@xxxxxxxxx>
Date: Thu Jul 8 15:27:53 2021 +0300
net/ncsi: add NCSI Intel OEM command to keep PHY up
[ Upstream commit abd2fddc94a619b96bf41c60429d4c32bd118e17 ]
This allows to keep PHY link up and prevents any channel resets during
the host load.
It is KEEP_PHY_LINK_UP option(Veto bit) in i210 datasheet which
block PHY reset and power state changes.
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Stable-dep-of: e85e271dec02 ("net/ncsi: Fix the multi thread manner of NCSI driver")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/ncsi/Kconfig b/net/ncsi/Kconfig
index 93309081f5a40..ea1dd32b6b1f6 100644
--- a/net/ncsi/Kconfig
+++ b/net/ncsi/Kconfig
@@ -17,3 +17,9 @@ config NCSI_OEM_CMD_GET_MAC
help
This allows to get MAC address from NCSI firmware and set them back to
controller.
+config NCSI_OEM_CMD_KEEP_PHY
+ bool "Keep PHY Link up"
+ depends on NET_NCSI
+ help
+ This allows to keep PHY link up and prevents any channel resets during
+ the host load.
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index ec765f2a75691..1e3e587d04d39 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -78,6 +78,9 @@ enum {
/* OEM Vendor Manufacture ID */
#define NCSI_OEM_MFR_MLX_ID 0x8119
#define NCSI_OEM_MFR_BCM_ID 0x113d
+#define NCSI_OEM_MFR_INTEL_ID 0x157
+/* Intel specific OEM command */
+#define NCSI_OEM_INTEL_CMD_KEEP_PHY 0x20 /* CMD ID for Keep PHY up */
/* Broadcom specific OEM Command */
#define NCSI_OEM_BCM_CMD_GMA 0x01 /* CMD ID for Get MAC */
/* Mellanox specific OEM Command */
@@ -86,6 +89,7 @@ enum {
#define NCSI_OEM_MLX_CMD_SMAF 0x01 /* CMD ID for Set MC Affinity */
#define NCSI_OEM_MLX_CMD_SMAF_PARAM 0x07 /* Parameter for SMAF */
/* OEM Command payload lengths*/
+#define NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN 7
#define NCSI_OEM_BCM_CMD_GMA_LEN 12
#define NCSI_OEM_MLX_CMD_GMA_LEN 8
#define NCSI_OEM_MLX_CMD_SMAF_LEN 60
@@ -274,6 +278,7 @@ enum {
ncsi_dev_state_probe_mlx_gma,
ncsi_dev_state_probe_mlx_smaf,
ncsi_dev_state_probe_cis,
+ ncsi_dev_state_probe_keep_phy,
ncsi_dev_state_probe_gvi,
ncsi_dev_state_probe_gc,
ncsi_dev_state_probe_gls,
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index ffff8da707b8c..06ad7db553fb5 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -689,6 +689,35 @@ static int set_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
return 0;
}
+#if IS_ENABLED(CONFIG_NCSI_OEM_CMD_KEEP_PHY)
+
+static int ncsi_oem_keep_phy_intel(struct ncsi_cmd_arg *nca)
+{
+ unsigned char data[NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN];
+ int ret = 0;
+
+ nca->payload = NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN;
+
+ memset(data, 0, NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN);
+ *(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_INTEL_ID);
+
+ data[4] = NCSI_OEM_INTEL_CMD_KEEP_PHY;
+
+ /* PHY Link up attribute */
+ data[6] = 0x1;
+
+ nca->data = data;
+
+ ret = ncsi_xmit_cmd(nca);
+ if (ret)
+ netdev_err(nca->ndp->ndev.dev,
+ "NCSI: Failed to transmit cmd 0x%x during configure\n",
+ nca->type);
+ return ret;
+}
+
+#endif
+
#if IS_ENABLED(CONFIG_NCSI_OEM_CMD_GET_MAC)
/* NCSI OEM Command APIs */
@@ -1391,8 +1420,24 @@ static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
goto error;
}
+ nd->state = ncsi_dev_state_probe_gvi;
+ if (IS_ENABLED(CONFIG_NCSI_OEM_CMD_KEEP_PHY))
+ nd->state = ncsi_dev_state_probe_keep_phy;
+ break;
+#if IS_ENABLED(CONFIG_NCSI_OEM_CMD_KEEP_PHY)
+ case ncsi_dev_state_probe_keep_phy:
+ ndp->pending_req_num = 1;
+
+ nca.type = NCSI_PKT_CMD_OEM;
+ nca.package = ndp->active_package->id;
+ nca.channel = 0;
+ ret = ncsi_oem_keep_phy_intel(&nca);
+ if (ret)
+ goto error;
+
nd->state = ncsi_dev_state_probe_gvi;
break;
+#endif /* CONFIG_NCSI_OEM_CMD_KEEP_PHY */
case ncsi_dev_state_probe_gvi:
case ncsi_dev_state_probe_gc:
case ncsi_dev_state_probe_gls:
