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qlcnic: Take FW dump via ethtool

Browse source 
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
View file

@ -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,
};