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path: root/drivers/net/wireless
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-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c124
-rw-r--r--drivers/net/wireless/iwlwifi/iwl4965-base.c133
2 files changed, 90 insertions, 167 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index e0e9bbdf140..b9a74f5eea5 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -6340,7 +6340,19 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
IWL_WARNING("Radio disabled by SW RF kill (module "
"parameter)\n");
- return 0;
+ return -ENODEV;
+ }
+
+ /* If platform's RF_KILL switch is NOT set to KILL */
+ if (iwl3945_read32(priv, CSR_GP_CNTRL) &
+ CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
+ clear_bit(STATUS_RF_KILL_HW, &priv->status);
+ else {
+ set_bit(STATUS_RF_KILL_HW, &priv->status);
+ if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
+ IWL_WARNING("Radio disabled by HW RF Kill switch\n");
+ return -ENODEV;
+ }
}
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
@@ -6375,6 +6387,10 @@ static int __iwl3945_up(struct iwl3945_priv *priv)
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
priv->ucode_data.len);
+ /* We return success when we resume from suspend and rf_kill is on. */
+ if (test_bit(STATUS_RF_KILL_HW, &priv->status))
+ return 0;
+
for (i = 0; i < MAX_HW_RESTARTS; i++) {
iwl3945_clear_stations_table(priv);
@@ -6919,12 +6935,18 @@ static int iwl3945_mac_start(struct ieee80211_hw *hw)
}
}
- IWL_DEBUG_INFO("Start UP work.\n");
- __iwl3945_up(priv);
+ ret = __iwl3945_up(priv);
- priv->is_open = 1;
mutex_unlock(&priv->mutex);
+ if (ret)
+ goto out_release_irq;
+
+ IWL_DEBUG_INFO("Start UP work.\n");
+
+ if (test_bit(STATUS_IN_SUSPEND, &priv->status))
+ return 0;
+
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
* mac80211 will not be run successfully. */
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
@@ -6939,6 +6961,7 @@ static int iwl3945_mac_start(struct ieee80211_hw *hw)
}
}
+ priv->is_open = 1;
IWL_DEBUG_MAC80211("leave\n");
return 0;
@@ -6946,6 +6969,9 @@ out_release_irq:
free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
pci_disable_msi(priv->pci_dev);
+ pci_disable_device(priv->pci_dev);
+ priv->is_open = 0;
+ IWL_DEBUG_MAC80211("leave - failed\n");
return ret;
}
@@ -6955,12 +6981,17 @@ static void iwl3945_mac_stop(struct ieee80211_hw *hw)
IWL_DEBUG_MAC80211("enter\n");
- /* stop mac, cancel any scan request and clear
- * RXON_FILTER_ASSOC_MSK BIT
- */
+ if (!priv->is_open) {
+ IWL_DEBUG_MAC80211("leave - skip\n");
+ return;
+ }
+
priv->is_open = 0;
if (iwl3945_is_ready_rf(priv)) {
+ /* stop mac, cancel any scan request and clear
+ * RXON_FILTER_ASSOC_MSK BIT
+ */
mutex_lock(&priv->mutex);
iwl3945_scan_cancel_timeout(priv, 100);
cancel_delayed_work(&priv->post_associate);
@@ -7334,7 +7365,6 @@ static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211("leave\n");
-
}
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
@@ -8731,89 +8761,27 @@ static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct iwl3945_priv *priv = pci_get_drvdata(pdev);
- set_bit(STATUS_IN_SUSPEND, &priv->status);
-
- /* Take down the device; powers it off, etc. */
- iwl3945_down(priv);
-
- if (priv->mac80211_registered)
- ieee80211_stop_queues(priv->hw);
+ if (priv->is_open) {
+ set_bit(STATUS_IN_SUSPEND, &priv->status);
+ iwl3945_mac_stop(priv->hw);
+ priv->is_open = 1;
+ }
- pci_save_state(pdev);
- pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
-static void iwl3945_resume(struct iwl3945_priv *priv)
-{
- unsigned long flags;
-
- /* The following it a temporary work around due to the
- * suspend / resume not fully initializing the NIC correctly.
- * Without all of the following, resume will not attempt to take
- * down the NIC (it shouldn't really need to) and will just try
- * and bring the NIC back up. However that fails during the
- * ucode verification process. This then causes iwl3945_down to be
- * called *after* iwl3945_hw_nic_init() has succeeded -- which
- * then lets the next init sequence succeed. So, we've
- * replicated all of that NIC init code here... */
-
- iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
-
- iwl3945_hw_nic_init(priv);
-
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
- iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
-
- /* tell the device to stop sending interrupts */
- iwl3945_disable_interrupts(priv);
-
- spin_lock_irqsave(&priv->lock, flags);
- iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
-
- if (!iwl3945_grab_nic_access(priv)) {
- iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
- APMG_CLK_VAL_DMA_CLK_RQT);
- iwl3945_release_nic_access(priv);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
-
- udelay(5);
-
- iwl3945_hw_nic_reset(priv);
-
- /* Bring the device back up */
- clear_bit(STATUS_IN_SUSPEND, &priv->status);
- queue_work(priv->workqueue, &priv->up);
-}
-
static int iwl3945_pci_resume(struct pci_dev *pdev)
{
struct iwl3945_priv *priv = pci_get_drvdata(pdev);
- int err;
-
- printk(KERN_INFO "Coming out of suspend...\n");
pci_set_power_state(pdev, PCI_D0);
- err = pci_enable_device(pdev);
- pci_restore_state(pdev);
- /*
- * Suspend/Resume resets the PCI configuration space, so we have to
- * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
- * from interfering with C3 CPU state. pci_restore_state won't help
- * here since it only restores the first 64 bytes pci config header.
- */
- pci_write_config_byte(pdev, 0x41, 0x00);
-
- iwl3945_resume(priv);
+ if (priv->is_open)
+ iwl3945_mac_start(priv->hw);
+ clear_bit(STATUS_IN_SUSPEND, &priv->status);
return 0;
}
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 98f09e6e9f8..811e41b7f66 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -6761,7 +6761,6 @@ static void iwl4965_down(struct iwl4965_priv *priv)
static int __iwl4965_up(struct iwl4965_priv *priv)
{
int rc, i;
- u32 hw_rf_kill = 0;
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
IWL_WARNING("Exit pending; will not bring the NIC up\n");
@@ -6771,7 +6770,19 @@ static int __iwl4965_up(struct iwl4965_priv *priv)
if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
IWL_WARNING("Radio disabled by SW RF kill (module "
"parameter)\n");
- return 0;
+ return -ENODEV;
+ }
+
+ /* If platform's RF_KILL switch is NOT set to KILL */
+ if (iwl4965_read32(priv, CSR_GP_CNTRL) &
+ CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
+ clear_bit(STATUS_RF_KILL_HW, &priv->status);
+ else {
+ set_bit(STATUS_RF_KILL_HW, &priv->status);
+ if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
+ IWL_WARNING("Radio disabled by HW RF Kill switch\n");
+ return -ENODEV;
+ }
}
if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
@@ -6806,17 +6817,9 @@ static int __iwl4965_up(struct iwl4965_priv *priv)
memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
priv->ucode_data.len);
- /* If platform's RF_KILL switch is set to KILL,
- * wait for BIT_INT_RF_KILL interrupt before loading uCode
- * and getting things started */
- if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
- CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
- hw_rf_kill = 1;
-
- if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
- IWL_WARNING("Radio disabled by HW RF Kill switch\n");
+ /* We return success when we resume from suspend and rf_kill is on. */
+ if (test_bit(STATUS_RF_KILL_HW, &priv->status))
return 0;
- }
for (i = 0; i < MAX_HW_RESTARTS; i++) {
@@ -7379,12 +7382,18 @@ static int iwl4965_mac_start(struct ieee80211_hw *hw)
}
}
- IWL_DEBUG_INFO("Start UP work.\n");
- __iwl4965_up(priv);
+ ret = __iwl4965_up(priv);
- priv->is_open = 1;
mutex_unlock(&priv->mutex);
+ if (ret)
+ goto out_release_irq;
+
+ IWL_DEBUG_INFO("Start UP work done.\n");
+
+ if (test_bit(STATUS_IN_SUSPEND, &priv->status))
+ return 0;
+
/* Wait for START_ALIVE from ucode. Otherwise callbacks from
* mac80211 will not be run successfully. */
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
@@ -7399,6 +7408,7 @@ static int iwl4965_mac_start(struct ieee80211_hw *hw)
}
}
+ priv->is_open = 1;
IWL_DEBUG_MAC80211("leave\n");
return 0;
@@ -7406,6 +7416,9 @@ out_release_irq:
free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
pci_disable_msi(priv->pci_dev);
+ pci_disable_device(priv->pci_dev);
+ priv->is_open = 0;
+ IWL_DEBUG_MAC80211("leave - failed\n");
return ret;
}
@@ -7415,12 +7428,17 @@ static void iwl4965_mac_stop(struct ieee80211_hw *hw)
IWL_DEBUG_MAC80211("enter\n");
- /* stop mac, cancel any scan request and clear
- * RXON_FILTER_ASSOC_MSK BIT
- */
+ if (!priv->is_open) {
+ IWL_DEBUG_MAC80211("leave - skip\n");
+ return;
+ }
+
priv->is_open = 0;
if (iwl4965_is_ready_rf(priv)) {
+ /* stop mac, cancel any scan request and clear
+ * RXON_FILTER_ASSOC_MSK BIT
+ */
mutex_lock(&priv->mutex);
iwl4965_scan_cancel_timeout(priv, 100);
cancel_delayed_work(&priv->post_associate);
@@ -8152,7 +8170,6 @@ static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211("leave\n");
-
}
static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
@@ -9327,89 +9344,27 @@ static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
- set_bit(STATUS_IN_SUSPEND, &priv->status);
-
- /* Take down the device; powers it off, etc. */
- iwl4965_down(priv);
-
- if (priv->mac80211_registered)
- ieee80211_stop_queues(priv->hw);
+ if (priv->is_open) {
+ set_bit(STATUS_IN_SUSPEND, &priv->status);
+ iwl4965_mac_stop(priv->hw);
+ priv->is_open = 1;
+ }
- pci_save_state(pdev);
- pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
-static void iwl4965_resume(struct iwl4965_priv *priv)
-{
- unsigned long flags;
-
- /* The following it a temporary work around due to the
- * suspend / resume not fully initializing the NIC correctly.
- * Without all of the following, resume will not attempt to take
- * down the NIC (it shouldn't really need to) and will just try
- * and bring the NIC back up. However that fails during the
- * ucode verification process. This then causes iwl4965_down to be
- * called *after* iwl4965_hw_nic_init() has succeeded -- which
- * then lets the next init sequence succeed. So, we've
- * replicated all of that NIC init code here... */
-
- iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
-
- iwl4965_hw_nic_init(priv);
-
- iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
- CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
- iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
- iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
- iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
-
- /* tell the device to stop sending interrupts */
- iwl4965_disable_interrupts(priv);
-
- spin_lock_irqsave(&priv->lock, flags);
- iwl4965_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
-
- if (!iwl4965_grab_nic_access(priv)) {
- iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
- APMG_CLK_VAL_DMA_CLK_RQT);
- iwl4965_release_nic_access(priv);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
-
- udelay(5);
-
- iwl4965_hw_nic_reset(priv);
-
- /* Bring the device back up */
- clear_bit(STATUS_IN_SUSPEND, &priv->status);
- queue_work(priv->workqueue, &priv->up);
-}
-
static int iwl4965_pci_resume(struct pci_dev *pdev)
{
struct iwl4965_priv *priv = pci_get_drvdata(pdev);
- int err;
-
- printk(KERN_INFO "Coming out of suspend...\n");
pci_set_power_state(pdev, PCI_D0);
- err = pci_enable_device(pdev);
- pci_restore_state(pdev);
- /*
- * Suspend/Resume resets the PCI configuration space, so we have to
- * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
- * from interfering with C3 CPU state. pci_restore_state won't help
- * here since it only restores the first 64 bytes pci config header.
- */
- pci_write_config_byte(pdev, 0x41, 0x00);
-
- iwl4965_resume(priv);
+ if (priv->is_open)
+ iwl4965_mac_start(priv->hw);
+ clear_bit(STATUS_IN_SUSPEND, &priv->status);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 01:27:05 +0000