bnxt_en: Add ETH_RESET_AP support

Add ETH_RESET_AP support handling to reset the internal
Application Processor(s) of the SmartNIC card.

Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index b13ce5ebde8d..fe7599f404bf 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -1376,6 +1376,9 @@ static int bnxt_firmware_reset(struct net_device *dev,
                 req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_CHIP;
                 req.selfrst_status = FW_RESET_REQ_SELFRST_STATUS_SELFRSTASAP;
                 break;
+        case BNXT_FW_RESET_AP:
+                req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_AP;
+                break;
         default:
                 return -EINVAL;
         }
@@ -2522,6 +2525,14 @@ static int bnxt_reset(struct net_device *dev, u32 *flags)
                 rc = bnxt_firmware_reset(dev, BNXT_FW_RESET_CHIP);
                 if (!rc)
                         netdev_info(dev, "Reset request successful. Reload driver to complete reset\n");
+        } else if (*flags == ETH_RESET_AP) {
+                /* This feature is not supported in older firmware versions */
+                if (bp->hwrm_spec_code < 0x10803)
+                        return -EOPNOTSUPP;
+
+                rc = bnxt_firmware_reset(dev, BNXT_FW_RESET_AP);
+                if (!rc)
+                        netdev_info(dev, "Reset Application Processor request successful.\n");
         } else {
                 rc = -EINVAL;
         }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
index ff601b42fcc8..836ef682f24c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
@@ -34,6 +34,7 @@ struct bnxt_led_cfg {
 #define BNXT_LED_DFLT_ENABLES(x)                        \
         cpu_to_le32(BNXT_LED_DFLT_ENA << (BNXT_LED_DFLT_ENA_SHIFT * (x)))
 
+#define BNXT_FW_RESET_AP        0xfffe
 #define BNXT_FW_RESET_CHIP      0xffff
 
 extern const struct ethtool_ops bnxt_ethtool_ops;