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qlcnic: Take FW dump via ethtool

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

Changes from v2:
Added lock to protect dump data structures from being mangled while
dumping or setting them via ethtool.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anirban Chakraborty 2011-05-12 12:48:34 +00:00 committed by David S. Miller
parent 18f2f616be
commit b3c687317f
1 changed files with 81 additions and 0 deletions
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81
drivers/net/qlcnic/qlcnic_ethtool.c
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@ -965,6 +965,84 @@ static void qlcnic_set_msglevel(struct net_device *netdev, u32 msglvl)
adapter->msg_enable = msglvl;
}
static int
qlcnic_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
dump->len = fw_dump->tmpl_hdr->size + fw_dump->size;
dump->flag = fw_dump->tmpl_hdr->drv_cap_mask;
dump->version = adapter->fw_version;
return 0;
}
static int
qlcnic_get_dump_data(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 (qlcnic_api_lock(adapter))
return -EIO;
if (!fw_dump->clr) {
netdev_info(netdev, "Dump not available\n");
qlcnic_api_unlock(adapter);
return -EINVAL;
}
/* Copy template header first */
copy_sz = fw_dump->tmpl_hdr->size;
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 data has been captured */
vfree(fw_dump->data);
fw_dump->data = NULL;
fw_dump->clr = 0;
qlcnic_api_unlock(adapter);
return 0;
}
static int
qlcnic_set_dump(struct net_device *netdev, struct ethtool_dump *val)
{
int ret = 0;
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);
ret = -EINVAL;
goto out;
}
if (qlcnic_api_lock(adapter))
return -EIO;
fw_dump->tmpl_hdr->drv_cap_mask = val->flag & 0xff;
qlcnic_api_unlock(adapter);
netdev_info(netdev, "Driver mask changed to: 0x%x\n",
fw_dump->tmpl_hdr->drv_cap_mask);
}
out:
return ret;
}
const struct ethtool_ops qlcnic_ethtool_ops = {
.get_settings = qlcnic_get_settings,
.set_settings = qlcnic_set_settings,
@ -991,4 +1069,7 @@ 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_flag = qlcnic_get_dump_flag,
.get_dump_data = qlcnic_get_dump_data,
.set_dump = qlcnic_set_dump,
};