Thread (10 messages) flat view 10 messages, 2 authors, 2011-05-10

[PATCHv2 net-next-2.6 2/2] qlcnic: Take FW dump via ethtool

From: Anirban Chakraborty <hidden>
Date: 2011-05-10 01:08:48
Subsystem: networking drivers, the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Driver checks if the previous dump has been cleared before taking the dump.
It doesn't take the dump if it is not cleared.

Signed-off-by: Anirban Chakraborty <redacted>
---
 drivers/net/qlcnic/qlcnic_ethtool.c |   60 +++++++++++++++++++++++++++++++++++
 1 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index c541461..1237449 100644
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -965,6 +965,64 @@ static void qlcnic_set_msglevel(struct net_device *netdev, u32 msglvl)
 	adapter->msg_enable = msglvl;
 }
 
+static int
+qlcnic_get_dump(struct net_device *netdev, struct ethtool_dump *dump,
+		void *buffer)
+{
+	int i, copy_sz;
+	u32 *hdr_ptr, *data;
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
+
+	if (dump->type == ETHTOOL_DUMP_FLAG) {
+		dump->len = fw_dump->tmpl_hdr->size + fw_dump->size;
+		dump->flag = fw_dump->tmpl_hdr->drv_cap_mask;
+		return 0;
+	}
+	if (!fw_dump->clr) {
+		netdev_info(netdev, "Dump not available\n");
+		return -EINVAL;
+	}
+	copy_sz = fw_dump->tmpl_hdr->size;
+	/* Copy template header first */
+	hdr_ptr = (u32 *) fw_dump->tmpl_hdr;
+	data = (u32 *) buffer;
+	for (i = 0; i < copy_sz/sizeof(u32); i++)
+		*data++ = cpu_to_le32(*hdr_ptr++);
+	/* Copy captured dump data */
+	memcpy(buffer + copy_sz, fw_dump->data, fw_dump->size);
+	dump->len = copy_sz + fw_dump->size;
+	dump->flag = fw_dump->tmpl_hdr->drv_cap_mask;
+	/* free dump area once the whoel dump data has been captured */
+	vfree(fw_dump->data);
+	fw_dump->size = 0;
+	fw_dump->data = NULL;
+	fw_dump->clr = 0;
+	return 0;
+}
+
+static int
+qlcnic_set_dump(struct net_device *netdev, struct ethtool_dump *val)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
+	if (val->flag == QLCNIC_FORCE_FW_DUMP_KEY) {
+		netdev_info(netdev, "Forcing a FW dump\n");
+		qlcnic_dev_request_reset(adapter);
+	} else {
+		if (val->flag > QLCNIC_DUMP_MASK_MAX ||
+			val->flag < QLCNIC_DUMP_MASK_MIN) {
+				netdev_info(netdev,
+				"Invalid dump level: 0x%x\n", val->flag);
+				return -EINVAL;
+		}
+		fw_dump->tmpl_hdr->drv_cap_mask = val->flag & 0xff;
+		netdev_info(netdev, "Driver mask changed to: 0x%x\n",
+			fw_dump->tmpl_hdr->drv_cap_mask);
+	}
+	return 0;
+}
+
 const struct ethtool_ops qlcnic_ethtool_ops = {
 	.get_settings = qlcnic_get_settings,
 	.set_settings = qlcnic_set_settings,
@@ -991,4 +1049,6 @@ const struct ethtool_ops qlcnic_ethtool_ops = {
 	.set_phys_id = qlcnic_set_led,
 	.set_msglevel = qlcnic_set_msglevel,
 	.get_msglevel = qlcnic_get_msglevel,
+	.get_dump = qlcnic_get_dump,
+	.set_dump = qlcnic_set_dump,
 };
-- 
1.7.4.1
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