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atl1c_main.c: add wait_for_idle routine 

Slight refactoring of duplicated wait for idle checks
Spelling fix

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: jie.yang@atheros.com
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Perches 2009-05-31 20:44:54 +00:00 committed by David S. Miller
parent 56d417b12e
commit c930a66220
1 changed files with 23 additions and 25 deletions
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48
drivers/net/atl1c/atl1c_main.c
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@ -163,6 +163,24 @@ static inline void atl1c_irq_reset(struct atl1c_adapter *adapter)
atl1c_irq_enable(adapter);
}
/*
* atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
* of the idle status register until the device is actually idle
*/
static u32 atl1c_wait_until_idle(struct atl1c_hw *hw)
{
int timeout;
u32 data;
for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
AT_READ_REG(hw, REG_IDLE_STATUS, &data);
if ((data & IDLE_STATUS_MASK) == 0)
return 0;
msleep(1);
}
return data;
}
/*
* atl1c_phy_config - Timer Call-back
* @data: pointer to netdev cast into an unsigned long
@ -1106,7 +1124,6 @@ static void atl1c_configure_dma(struct atl1c_adapter *adapter)
static int atl1c_stop_mac(struct atl1c_hw *hw)
{
u32 data;
int timeout;
AT_READ_REG(hw, REG_RXQ_CTRL, &data);
data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN |
@ -1117,25 +1134,13 @@ static int atl1c_stop_mac(struct atl1c_hw *hw)
data &= ~TXQ_CTRL_EN;
AT_WRITE_REG(hw, REG_TWSI_CTRL, data);
for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
AT_READ_REG(hw, REG_IDLE_STATUS, &data);
if ((data & (IDLE_STATUS_RXQ_NO_IDLE |
IDLE_STATUS_TXQ_NO_IDLE)) == 0)
break;
msleep(1);
}
atl1c_wait_until_idle(hw);
AT_READ_REG(hw, REG_MAC_CTRL, &data);
data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN);
AT_WRITE_REG(hw, REG_MAC_CTRL, data);
for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
AT_READ_REG(hw, REG_IDLE_STATUS, &data);
if ((data & IDLE_STATUS_MASK) == 0)
return 0;
msleep(1);
}
return data;
return (int)atl1c_wait_until_idle(hw);
}
static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw)
@ -1178,8 +1183,6 @@ static int atl1c_reset_mac(struct atl1c_hw *hw)
{
struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter;
struct pci_dev *pdev = adapter->pdev;
u32 idle_status_data = 0;
int timeout = 0;
int ret;
AT_WRITE_REG(hw, REG_IMR, 0);
@ -1198,15 +1201,10 @@ static int atl1c_reset_mac(struct atl1c_hw *hw)
AT_WRITE_FLUSH(hw);
msleep(10);
/* Wait at least 10ms for All module to be Idle */
for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
AT_READ_REG(hw, REG_IDLE_STATUS, &idle_status_data);
if ((idle_status_data & IDLE_STATUS_MASK) == 0)
break;
msleep(1);
}
if (timeout >= AT_HW_MAX_IDLE_DELAY) {
if (atl1c_wait_until_idle(hw)) {
dev_err(&pdev->dev,
"MAC state machine cann't be idle since"
"MAC state machine can't be idle since"
" disabled for 10ms second\n");
return -1;
}