bnxt_en: Add support to invoke OP-TEE API to reset firmware

In error recovery process when firmware indicates that it is
completely down, initiate a firmware reset by calling OP-TEE API.

Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: NVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: NSheetal Tigadoli <sheetal.tigadoli@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -10581,14 +10581,23 @@ static void bnxt_fw_reset_writel(struct bnxt *bp, int reg_idx)
 static void bnxt_reset_all(struct bnxt *bp)
 {
 	struct bnxt_fw_health *fw_health = bp->fw_health;
-	int i;
+	int i, rc;
+
+	if (bp->fw_cap & BNXT_FW_CAP_ERR_RECOVER_RELOAD) {
+#ifdef CONFIG_TEE_BNXT_FW
+		rc = tee_bnxt_fw_load();
+		if (rc)
+			netdev_err(bp->dev, "Unable to reset FW rc=%d\n", rc);
+		bp->fw_reset_timestamp = jiffies;
+#endif
+		return;
+	}
 
 	if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_HOST) {
 		for (i = 0; i < fw_health->fw_reset_seq_cnt; i++)
 			bnxt_fw_reset_writel(bp, i);
 	} else if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_CO_CPU) {
 		struct hwrm_fw_reset_input req = {0};
-		int rc;
 
 		bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1, -1);
 		req.resp_addr = cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr);

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

@@ -25,6 +25,9 @@
 #include <net/dst_metadata.h>
 #include <net/xdp.h>
 #include <linux/dim.h>
+#ifdef CONFIG_TEE_BNXT_FW
+#include <linux/firmware/broadcom/tee_bnxt_fw.h>
+#endif
 
 struct page_pool;