Merge branch 'bnxt_en-Bug-fixes'

Michael Chan says:

====================
bnxt_en: Bug fixes.

The first patch stores the firmware version code which is needed by the
next 2 patches to determine some worarounds based on the firmware version.
The workarounds are to disable legacy TX push mode and to clear the
hardware statistics during ifdown.  The last patch checks that it is
a PF before reading the VPD.

Please also queue these for -stable.  Thanks.
====================
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -6292,6 +6292,7 @@ int bnxt_hwrm_set_coal(struct bnxt *bp)
 
 static void bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
 {
+	struct hwrm_stat_ctx_clr_stats_input req0 = {0};
 	struct hwrm_stat_ctx_free_input req = {0};
 	int i;
 
@@ -6301,6 +6302,7 @@ static void bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
 	if (BNXT_CHIP_TYPE_NITRO_A0(bp))
 		return;
 
+	bnxt_hwrm_cmd_hdr_init(bp, &req0, HWRM_STAT_CTX_CLR_STATS, -1, -1);
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_STAT_CTX_FREE, -1, -1);
 
 	mutex_lock(&bp->hwrm_cmd_lock);
@@ -6310,7 +6312,11 @@ static void bnxt_hwrm_stat_ctx_free(struct bnxt *bp)
 
 		if (cpr->hw_stats_ctx_id != INVALID_STATS_CTX_ID) {
 			req.stat_ctx_id = cpu_to_le32(cpr->hw_stats_ctx_id);
-
+			if (BNXT_FW_MAJ(bp) <= 20) {
+				req0.stat_ctx_id = req.stat_ctx_id;
+				_hwrm_send_message(bp, &req0, sizeof(req0),
+						   HWRM_CMD_TIMEOUT);
+			}
 			_hwrm_send_message(bp, &req, sizeof(req),
 					   HWRM_CMD_TIMEOUT);
 
@@ -6976,7 +6982,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 		bp->fw_cap |= BNXT_FW_CAP_ERR_RECOVER_RELOAD;
 
 	bp->tx_push_thresh = 0;
-	if (flags & FUNC_QCAPS_RESP_FLAGS_PUSH_MODE_SUPPORTED)
+	if ((flags & FUNC_QCAPS_RESP_FLAGS_PUSH_MODE_SUPPORTED) &&
+	    BNXT_FW_MAJ(bp) > 217)
 		bp->tx_push_thresh = BNXT_TX_PUSH_THRESH;
 
 	hw_resc->max_rsscos_ctxs = le16_to_cpu(resp->max_rsscos_ctx);
@@ -7240,8 +7247,9 @@ static int __bnxt_hwrm_ver_get(struct bnxt *bp, bool silent)
 static int bnxt_hwrm_ver_get(struct bnxt *bp)
 {
 	struct hwrm_ver_get_output *resp = bp->hwrm_cmd_resp_addr;
+	u16 fw_maj, fw_min, fw_bld, fw_rsv;
 	u32 dev_caps_cfg, hwrm_ver;
-	int rc;
+	int rc, len;
 
 	bp->hwrm_max_req_len = HWRM_MAX_REQ_LEN;
 	mutex_lock(&bp->hwrm_cmd_lock);
@@ -7273,9 +7281,22 @@ static int bnxt_hwrm_ver_get(struct bnxt *bp)
 			 resp->hwrm_intf_maj_8b, resp->hwrm_intf_min_8b,
 			 resp->hwrm_intf_upd_8b);
 
-	snprintf(bp->fw_ver_str, BC_HWRM_STR_LEN, "%d.%d.%d.%d",
-		 resp->hwrm_fw_maj_8b, resp->hwrm_fw_min_8b,
-		 resp->hwrm_fw_bld_8b, resp->hwrm_fw_rsvd_8b);
+	fw_maj = le16_to_cpu(resp->hwrm_fw_major);
+	if (bp->hwrm_spec_code > 0x10803 && fw_maj) {
+		fw_min = le16_to_cpu(resp->hwrm_fw_minor);
+		fw_bld = le16_to_cpu(resp->hwrm_fw_build);
+		fw_rsv = le16_to_cpu(resp->hwrm_fw_patch);
+		len = FW_VER_STR_LEN;
+	} else {
+		fw_maj = resp->hwrm_fw_maj_8b;
+		fw_min = resp->hwrm_fw_min_8b;
+		fw_bld = resp->hwrm_fw_bld_8b;
+		fw_rsv = resp->hwrm_fw_rsvd_8b;
+		len = BC_HWRM_STR_LEN;
+	}
+	bp->fw_ver_code = BNXT_FW_VER_CODE(fw_maj, fw_min, fw_bld, fw_rsv);
+	snprintf(bp->fw_ver_str, len, "%d.%d.%d.%d", fw_maj, fw_min, fw_bld,
+		 fw_rsv);
 
 	if (strlen(resp->active_pkg_name)) {
 		int fw_ver_len = strlen(bp->fw_ver_str);
@@ -11892,7 +11913,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dev->ethtool_ops = &bnxt_ethtool_ops;
 	pci_set_drvdata(pdev, dev);
 
-	bnxt_vpd_read_info(bp);
+	if (BNXT_PF(bp))
+		bnxt_vpd_read_info(bp);
 
 	rc = bnxt_alloc_hwrm_resources(bp);
 	if (rc)

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1746,6 +1746,11 @@ struct bnxt {
 #define PHY_VER_STR_LEN         (FW_VER_STR_LEN - BC_HWRM_STR_LEN)
 	char			fw_ver_str[FW_VER_STR_LEN];
 	char			hwrm_ver_supp[FW_VER_STR_LEN];
+	u64			fw_ver_code;
+#define BNXT_FW_VER_CODE(maj, min, bld, rsv)			\
+	((u64)(maj) << 48 | (u64)(min) << 32 | (u64)(bld) << 16 | (rsv))
+#define BNXT_FW_MAJ(bp)		((bp)->fw_ver_code >> 48)
+
 	__be16			vxlan_port;
 	u8			vxlan_port_cnt;
 	__le16			vxlan_fw_dst_port_id;