[PATCH net-next 4/4] qede: Add support for dumping the grc data.

[Sudarsana Reddy Kalluru]

This patch adds driver support for configuring grc dump config flags, and
dumping the grc data via ethtool get/set-dump interfaces.

Signed-off-by: Sudarsana Reddy Kalluru <skall...@marvell.com>
Signed-off-by: Ariel Elior <ael...@marvell.com>
---
 drivers/net/ethernet/qlogic/qede/qede.h         |  1 +
 drivers/net/ethernet/qlogic/qede/qede_ethtool.c | 29 +++++++++++++++++++++++--
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede.h 
b/drivers/net/ethernet/qlogic/qede/qede.h
index 8f2adde..c303a92 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -181,6 +181,7 @@ enum qede_flags_bit {
 enum qede_dump_cmd {
        QEDE_DUMP_CMD_NONE = 0,
        QEDE_DUMP_CMD_NVM_CFG,
+       QEDE_DUMP_CMD_GRCDUMP,
        QEDE_DUMP_CMD_MAX
 };
 
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c 
b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 2359293..ec27a43 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -2001,6 +2001,10 @@ static int qede_set_dump(struct net_device *dev, struct 
ethtool_dump *val)
                edev->dump_info.args[edev->dump_info.num_args] = val->flag;
                edev->dump_info.num_args++;
                break;
+       case QEDE_DUMP_CMD_GRCDUMP:
+               rc = edev->ops->common->set_grc_config(edev->cdev,
+                                                      val->flag, 1);
+               break;
        default:
                break;
        }
@@ -2013,14 +2017,24 @@ static int qede_get_dump_flag(struct net_device *dev,
 {
        struct qede_dev *edev = netdev_priv(dev);
 
+       if (!edev->ops || !edev->ops->common) {
+               DP_ERR(edev, "Edev ops not populated\n");
+               return -EINVAL;
+       }
+
        dump->version = QEDE_DUMP_VERSION;
        switch (edev->dump_info.cmd) {
        case QEDE_DUMP_CMD_NVM_CFG:
                dump->flag = QEDE_DUMP_CMD_NVM_CFG;
                dump->len = QEDE_DUMP_NVM_BUF_LEN;
                break;
-       default:
+       case QEDE_DUMP_CMD_GRCDUMP:
+               dump->flag = QEDE_DUMP_CMD_GRCDUMP;
+               dump->len = edev->ops->common->dbg_all_data_size(edev->cdev);
                break;
+       default:
+               DP_ERR(edev, "Invalid cmd = %d\n", edev->dump_info.cmd);
+               return -EINVAL;
        }
 
        DP_VERBOSE(edev, QED_MSG_DEBUG,
@@ -2033,7 +2047,14 @@ static int qede_get_dump_data(struct net_device *dev,
                              struct ethtool_dump *dump, void *buf)
 {
        struct qede_dev *edev = netdev_priv(dev);
-       int rc;
+       int rc = 0;
+
+       if (!edev->ops || !edev->ops->common) {
+               DP_ERR(edev, "Edev ops not populated\n");
+               edev->dump_info.cmd = QEDE_DUMP_CMD_NONE;
+               edev->dump_info.num_args = 0;
+               return -EINVAL;
+       }
 
        switch (edev->dump_info.cmd) {
        case QEDE_DUMP_CMD_NVM_CFG:
@@ -2047,6 +2068,10 @@ static int qede_get_dump_data(struct net_device *dev,
                                                      edev->dump_info.args[0],
                                                      edev->dump_info.args[1]);
                break;
+       case QEDE_DUMP_CMD_GRCDUMP:
+               memset(buf, 0, dump->len);
+               rc = edev->ops->common->dbg_all_data(edev->cdev, buf);
+               break;
        default:
                DP_ERR(edev, "Invalid cmd = %d\n", edev->dump_info.cmd);
                rc = -EINVAL;
-- 
1.8.3.1