From 40e44a1e669d078946f46853808a60d29e6f0885 Mon Sep 17 00:00:00 2001 From: Scott Branden Date: Thu, 30 Nov 2017 11:35:59 -0800 Subject: [PATCH 1/2] net: ethtool: add support for reset of AP inside NIC interface. Add ETH_RESET_AP to reset the application processor(s) inside the NIC interface. Current ETH_RESET_MGMT supports a management processor inside this NIC. This is typically used for remote NIC management purposes. Application processors exist inside some SmartNICs to run various applications inside the NIC processor - be it a simple algorithm without an OS to as complex as hosting multiple VMs. Signed-off-by: Scott Branden Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- include/uapi/linux/ethtool.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index ac71559314e73..44a0b675a6bcd 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -1686,6 +1686,7 @@ enum ethtool_reset_flags { ETH_RESET_PHY = 1 << 6, /* Transceiver/PHY */ ETH_RESET_RAM = 1 << 7, /* RAM shared between * multiple components */ + ETH_RESET_AP = 1 << 8, /* Application processor */ ETH_RESET_DEDICATED = 0x0000ffff, /* All components dedicated to * this interface */ From 6502ad5963a5307089bed395f63173e34cb251ea Mon Sep 17 00:00:00 2001 From: Scott Branden Date: Thu, 30 Nov 2017 11:36:00 -0800 Subject: [PATCH 2/2] 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 Acked-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 11 +++++++++++ drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 1 + 2 files changed, 12 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index b13ce5ebde8d9..fe7599f404bf7 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 ff601b42fcc8e..836ef682f24c3 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;