Commit 73d7b5ac authored by Zhu, Yi's avatar Zhu, Yi Committed by John W. Linville
Browse files

iwlwifi: iwl_poll_{direct_}bit cleanup



The patch merges implementation of iwl_poll_bit() and
iwl_poll_direct_bit() by letting the latter be a special case of
the former.
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 42802d71
......@@ -321,6 +321,7 @@ struct iwl3945_eeprom {
/* RSSR */
#define FH_RSSR_CTRL (FH_RSSR_TABLE+0x000)
#define FH_RSSR_STATUS (FH_RSSR_TABLE+0x004)
#define FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000)
/* TCSR */
#define FH_TCSR(_channel) (FH_TCSR_TABLE+(_channel)*0x20)
#define FH_TCSR_CONFIG(_channel) (FH_TCSR(_channel)+0x00)
......
......@@ -271,16 +271,7 @@ static inline void iwl3945_write_reg_buf(struct iwl3945_priv *priv,
static inline int _iwl3945_poll_direct_bit(struct iwl3945_priv *priv,
u32 addr, u32 mask, int timeout)
{
int i = 0;
do {
if ((_iwl3945_read_direct32(priv, addr) & mask) == mask)
return i;
udelay(10);
i += 10;
} while (i < timeout);
return -ETIMEDOUT;
return _iwl3945_poll_bit(priv, addr, mask, mask, timeout);
}
#ifdef CONFIG_IWL3945_DEBUG
......
......@@ -1103,9 +1103,8 @@ int iwl3945_hw_nic_init(struct iwl3945_priv *priv)
CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
rc = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (rc < 0) {
spin_unlock_irqrestore(&priv->lock, flags);
IWL_DEBUG_INFO("Failed to init the card\n");
......@@ -1286,8 +1285,7 @@ int iwl3945_hw_nic_stop_master(struct iwl3945_priv *priv)
IWL_DEBUG_INFO("Card in power save, master is already "
"stopped\n");
else {
rc = iwl3945_poll_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED,
rc = iwl3945_poll_direct_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
if (rc < 0) {
spin_unlock_irqrestore(&priv->lock, flags);
......@@ -1312,9 +1310,8 @@ int iwl3945_hw_nic_reset(struct iwl3945_priv *priv)
iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
rc = iwl3945_grab_nic_access(priv);
if (!rc) {
......@@ -2311,7 +2308,8 @@ int iwl3945_hw_rxq_stop(struct iwl3945_priv *priv)
}
iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), 0);
rc = iwl3945_poll_direct_bit(priv, FH_RSSR_STATUS, (1 << 24), 1000);
rc = iwl3945_poll_direct_bit(priv, FH_RSSR_STATUS,
FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
if (rc < 0)
IWL_ERROR("Can't stop Rx DMA.\n");
......
......@@ -352,9 +352,8 @@ static int iwl4965_apm_init(struct iwl_priv *priv)
iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
/* wait for clock stabilization */
ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (ret < 0) {
IWL_DEBUG_INFO("Failed to init the card\n");
goto out;
......@@ -436,9 +435,8 @@ static int iwl4965_apm_stop_master(struct iwl_priv *priv)
/* set stop master bit */
iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
ret = iwl_poll_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED,
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
ret = iwl_poll_direct_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
if (ret < 0)
goto out;
......@@ -482,10 +480,8 @@ static int iwl4965_apm_reset(struct iwl_priv *priv)
iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (ret < 0)
goto out;
......
......@@ -81,8 +81,7 @@ static int iwl5000_apm_stop_master(struct iwl_priv *priv)
/* set stop master bit */
iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
ret = iwl_poll_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED,
ret = iwl_poll_direct_bit(priv, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
if (ret < 0)
goto out;
......@@ -120,9 +119,8 @@ static int iwl5000_apm_init(struct iwl_priv *priv)
iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
/* wait for clock stabilization */
ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (ret < 0) {
IWL_DEBUG_INFO("Failed to init the card\n");
return ret;
......@@ -189,9 +187,8 @@ static int iwl5000_apm_reset(struct iwl_priv *priv)
iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
/* wait for clock stabilization */
ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (ret < 0) {
IWL_DEBUG_INFO("Failed to init the card\n");
goto out;
......
......@@ -169,10 +169,9 @@ int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv)
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
/* See if we got it */
ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
EEPROM_SEM_TIMEOUT);
ret = iwl_poll_direct_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
EEPROM_SEM_TIMEOUT);
if (ret >= 0) {
IWL_DEBUG_IO("Acquired semaphore after %d tries.\n",
count+1);
......
......@@ -269,19 +269,10 @@ static inline void iwl_write_reg_buf(struct iwl_priv *priv,
}
}
static inline int _iwl_poll_direct_bit(struct iwl_priv *priv,
u32 addr, u32 mask, int timeout)
static inline int _iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr,
u32 mask, int timeout)
{
int i = 0;
do {
if ((_iwl_read_direct32(priv, addr) & mask) == mask)
return i;
udelay(10);
i += 10;
} while (i < timeout);
return -ETIMEDOUT;
return _iwl_poll_bit(priv, addr, mask, mask, timeout);
}
#ifdef CONFIG_IWLWIFI_DEBUG
......
......@@ -467,10 +467,8 @@ int iwl_rxq_stop(struct iwl_priv *priv)
/* stop Rx DMA */
iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
ret = iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
(1 << 24), 1000);
if (ret < 0)
IWL_ERROR("Can't stop Rx DMA.\n");
iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
iwl_release_nic_access(priv);
spin_unlock_irqrestore(&priv->lock, flags);
......
......@@ -7925,9 +7925,8 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (err < 0) {
IWL_DEBUG_INFO("Failed to init the card\n");
goto out_remove_sysfs;
......
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