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i40e: Change the ethtool NVM read method to use AQ

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Earlier we were reading Shadow RAM (copy of the NVM) which can differ
from the actual NVM. Use AQ instead to read the actual NVM.

Change-Id: Ia0f2773b722db77d093f738c068af872be69bbd4
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anjali Singhai Jain 2013-11-28 06:39:28 +00:00 committed by Jeff Kirsher
parent f62b5060d6
commit e5e0a5db4c
1 changed files with 45 additions and 21 deletions
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66
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
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@ -351,38 +351,56 @@ static int i40e_get_eeprom(struct net_device *netdev,
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_hw *hw = &np->vsi->back->hw;
int first_word, last_word;
u16 i, eeprom_len;
u16 *eeprom_buff;
int ret_val = 0;
struct i40e_pf *pf = np->vsi->back;
int ret_val = 0, len;
u8 *eeprom_buff;
u16 i, sectors;
bool last;
#define I40E_NVM_SECTOR_SIZE 4096
if (eeprom->len == 0)
return -EINVAL;
eeprom->magic = hw->vendor_id | (hw->device_id << 16);
first_word = eeprom->offset >> 1;
last_word = (eeprom->offset + eeprom->len - 1) >> 1;
eeprom_len = last_word - first_word + 1;
eeprom_buff = kmalloc(sizeof(u16) * eeprom_len, GFP_KERNEL);
eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
if (!eeprom_buff)
return -ENOMEM;
ret_val = i40e_read_nvm_buffer(hw, first_word, &eeprom_len,
eeprom_buff);
if (eeprom_len == 0) {
kfree(eeprom_buff);
return -EACCES;
ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret_val) {
dev_info(&pf->pdev->dev,
"Failed Acquiring NVM resource for read err=%d status=0x%x\n",
ret_val, hw->aq.asq_last_status);
goto free_buff;
}
/* Device's eeprom is always little-endian, word addressable */
for (i = 0; i < eeprom_len; i++)
le16_to_cpus(&eeprom_buff[i]);
sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
len = I40E_NVM_SECTOR_SIZE;
last = false;
for (i = 0; i < sectors; i++) {
if (i == (sectors - 1)) {
len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
last = true;
}
ret_val = i40e_aq_read_nvm(hw, 0x0,
eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
len,
(u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
last, NULL);
if (ret_val) {
dev_info(&pf->pdev->dev,
"read NVM failed err=%d status=0x%x\n",
ret_val, hw->aq.asq_last_status);
goto release_nvm;
}
}
memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
release_nvm:
i40e_release_nvm(hw);
memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
free_buff:
kfree(eeprom_buff);
return ret_val;
}
@ -390,8 +408,14 @@ static int i40e_get_eeprom_len(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_hw *hw = &np->vsi->back->hw;
u32 val;
return hw->nvm.sr_size * 2;
val = (rd32(hw, I40E_GLPCI_LBARCTRL)
& I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
>> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
/* register returns value in power of 2, 64Kbyte chunks. */
val = (64 * 1024) * (1 << val);
return val;
}
static void i40e_get_drvinfo(struct net_device *netdev,