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bnxt_en: Extend ETHTOOL_RESET to hot reset driver.

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If firmware supports hot reset, extend ETHTOOL_RESET to support
hot reset driver which does not require a driver reload after
ETHTOOL_RESET.  The driver will go through the same coordinated
reset sequence as a firmware initiated fatal/non-fatal reset.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vasundhara Volam 2019-11-18 03:56:38 -05:00 committed by David S. Miller
parent 5b306bde2b
commit 0a3f4e4f34
3 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -6947,6 +6947,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->flags |= BNXT_FLAG_ROCEV2_CAP;
if (flags & FUNC_QCAPS_RESP_FLAGS_PCIE_STATS_SUPPORTED)
bp->fw_cap |= BNXT_FW_CAP_PCIE_STATS_SUPPORTED;
if (flags & FUNC_QCAPS_RESP_FLAGS_HOT_RESET_CAPABLE)
bp->fw_cap |= BNXT_FW_CAP_HOT_RESET;
if (flags & FUNC_QCAPS_RESP_FLAGS_EXT_STATS_SUPPORTED)
bp->fw_cap |= BNXT_FW_CAP_EXT_STATS_SUPPORTED;
if (flags & FUNC_QCAPS_RESP_FLAGS_ERROR_RECOVERY_CAPABLE)

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1671,6 +1671,7 @@ struct bnxt {
#define BNXT_FW_CAP_PCIE_STATS_SUPPORTED 0x00020000
#define BNXT_FW_CAP_EXT_STATS_SUPPORTED 0x00040000
#define BNXT_FW_CAP_ERR_RECOVER_RELOAD 0x00100000
#define BNXT_FW_CAP_HOT_RESET 0x00200000
#define BNXT_NEW_RM(bp) ((bp)->fw_cap & BNXT_FW_CAP_NEW_RM)
u32 hwrm_spec_code;

9
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -1787,6 +1787,8 @@ static int bnxt_firmware_reset(struct net_device *dev,
case BNXT_FW_RESET_CHIP:
req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_CHIP;
req.selfrst_status = FW_RESET_REQ_SELFRST_STATUS_SELFRSTASAP;
if (bp->fw_cap & BNXT_FW_CAP_HOT_RESET)
req.flags = FW_RESET_REQ_FLAGS_RESET_GRACEFUL;
break;
case BNXT_FW_RESET_AP:
req.embedded_proc_type = FW_RESET_REQ_EMBEDDED_PROC_TYPE_AP;
@ -2983,7 +2985,8 @@ static int bnxt_reset(struct net_device *dev, u32 *flags)
return -EOPNOTSUPP;
}
if (pci_vfs_assigned(bp->pdev)) {
if (pci_vfs_assigned(bp->pdev) &&
!(bp->fw_cap & BNXT_FW_CAP_HOT_RESET)) {
netdev_err(dev,
"Reset not allowed when VFs are assigned to VMs\n");
return -EBUSY;
@ -2996,7 +2999,9 @@ 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");
netdev_info(dev, "Reset request successful.\n");
if (!(bp->fw_cap & BNXT_FW_CAP_HOT_RESET))
netdev_info(dev, "Reload driver to complete reset\n");
*flags = 0;
}
} else if (*flags == ETH_RESET_AP) {