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Message-ID: <20210830171806.119857-2-i.mikhaylov@yadro.com>
Date: Mon, 30 Aug 2021 20:18:06 +0300
From: Ivan Mikhaylov <i.mikhaylov@...ro.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Samuel Mendoza-Jonas <sam@...dozajonas.com>
CC: Ivan Mikhaylov <i.mikhaylov@...ro.com>,
Joel Stanley <joel@....id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<openbmc@...ts.ozlabs.org>, Brad Ho <Brad_Ho@...enix.com>,
Paul Fertser <fercerpav@...il.com>
Subject: [PATCH 1/1] net/ncsi: add get MAC address command to get Intel i210 MAC address
This patch adds OEM Intel GMA command and response handler for it.
Signed-off-by: Brad Ho <Brad_Ho@...enix.com>
Signed-off-by: Paul Fertser <fercerpav@...il.com>
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@...ro.com>
---
net/ncsi/internal.h | 3 +++
net/ncsi/ncsi-manage.c | 25 ++++++++++++++++++++++++-
net/ncsi/ncsi-pkt.h | 6 ++++++
net/ncsi/ncsi-rsp.c | 42 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 75 insertions(+), 1 deletion(-)
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index 0b6cfd3b31e0..03757e76bb6b 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -80,6 +80,7 @@ enum {
#define NCSI_OEM_MFR_BCM_ID 0x113d
#define NCSI_OEM_MFR_INTEL_ID 0x157
/* Intel specific OEM command */
+#define NCSI_OEM_INTEL_CMD_GMA 0x06 /* CMD ID for Get MAC */
#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 */
@@ -89,6 +90,7 @@ 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_GMA_LEN 5
#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
@@ -99,6 +101,7 @@ enum {
/* Mac address offset in OEM response */
#define BCM_MAC_ADDR_OFFSET 28
#define MLX_MAC_ADDR_OFFSET 8
+#define INTEL_MAC_ADDR_OFFSET 1
struct ncsi_channel_version {
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 89c7742cd72e..7121ce2a47c0 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -795,13 +795,36 @@ static int ncsi_oem_smaf_mlx(struct ncsi_cmd_arg *nca)
return ret;
}
+static int ncsi_oem_gma_handler_intel(struct ncsi_cmd_arg *nca)
+{
+ unsigned char data[NCSI_OEM_INTEL_CMD_GMA_LEN];
+ int ret = 0;
+
+ nca->payload = NCSI_OEM_INTEL_CMD_GMA_LEN;
+
+ memset(data, 0, NCSI_OEM_INTEL_CMD_GMA_LEN);
+ *(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_INTEL_ID);
+ data[4] = NCSI_OEM_INTEL_CMD_GMA;
+
+ 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;
+}
+
/* OEM Command handlers initialization */
static struct ncsi_oem_gma_handler {
unsigned int mfr_id;
int (*handler)(struct ncsi_cmd_arg *nca);
} ncsi_oem_gma_handlers[] = {
{ NCSI_OEM_MFR_BCM_ID, ncsi_oem_gma_handler_bcm },
- { NCSI_OEM_MFR_MLX_ID, ncsi_oem_gma_handler_mlx }
+ { NCSI_OEM_MFR_MLX_ID, ncsi_oem_gma_handler_mlx },
+ { NCSI_OEM_MFR_INTEL_ID, ncsi_oem_gma_handler_intel }
};
static int ncsi_gma_handler(struct ncsi_cmd_arg *nca, unsigned int mf_id)
diff --git a/net/ncsi/ncsi-pkt.h b/net/ncsi/ncsi-pkt.h
index 80938b338fee..ba66c7dc3a21 100644
--- a/net/ncsi/ncsi-pkt.h
+++ b/net/ncsi/ncsi-pkt.h
@@ -178,6 +178,12 @@ struct ncsi_rsp_oem_bcm_pkt {
unsigned char data[]; /* Cmd specific Data */
};
+/* Intel Response Data */
+struct ncsi_rsp_oem_intel_pkt {
+ unsigned char cmd; /* OEM Command ID */
+ unsigned char data[]; /* Cmd specific Data */
+};
+
/* Get Link Status */
struct ncsi_rsp_gls_pkt {
struct ncsi_rsp_pkt_hdr rsp; /* Response header */
diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c
index d48374894817..6447a09932f5 100644
--- a/net/ncsi/ncsi-rsp.c
+++ b/net/ncsi/ncsi-rsp.c
@@ -699,9 +699,51 @@ static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr)
return 0;
}
+/* Response handler for Intel command Get Mac Address */
+static int ncsi_rsp_handler_oem_intel_gma(struct ncsi_request *nr)
+{
+ struct ncsi_dev_priv *ndp = nr->ndp;
+ struct net_device *ndev = ndp->ndev.dev;
+ const struct net_device_ops *ops = ndev->netdev_ops;
+ struct ncsi_rsp_oem_pkt *rsp;
+ struct sockaddr saddr;
+ int ret = 0;
+
+ /* Get the response header */
+ rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
+
+ saddr.sa_family = ndev->type;
+ ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+ memcpy(saddr.sa_data, &rsp->data[INTEL_MAC_ADDR_OFFSET], ETH_ALEN);
+ /* Increase mac address by 1 for BMC's address */
+ eth_addr_inc((u8 *)saddr.sa_data);
+ if (!is_valid_ether_addr((const u8 *)saddr.sa_data))
+ return -ENXIO;
+
+ /* Set the flag for GMA command which should only be called once */
+ ndp->gma_flag = 1;
+
+ ret = ops->ndo_set_mac_address(ndev, &saddr);
+ if (ret < 0)
+ netdev_warn(ndev,
+ "NCSI: 'Writing mac address to device failed\n");
+
+ return ret;
+}
+
/* Response handler for Intel card */
static int ncsi_rsp_handler_oem_intel(struct ncsi_request *nr)
{
+ struct ncsi_rsp_oem_intel_pkt *intel;
+ struct ncsi_rsp_oem_pkt *rsp;
+
+ /* Get the response header */
+ rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp);
+ intel = (struct ncsi_rsp_oem_intel_pkt *)(rsp->data);
+
+ if (intel->cmd == NCSI_OEM_INTEL_CMD_GMA)
+ return ncsi_rsp_handler_oem_intel_gma(nr);
+
return 0;
}
--
2.31.1
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