Commit 086ed117 authored by Mohamed Abbas's avatar Mohamed Abbas Committed by John W. Linville
Browse files

iwlagn: co-exist with AMT



Enable using iwlwifi driver in AMT system.
Signed-off-by: default avatarMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 0324c14b
......@@ -1792,6 +1792,49 @@ static void iwl_down(struct iwl_priv *priv)
iwl_cancel_deferred_work(priv);
}
#define HW_READY_TIMEOUT (50)
static int iwl_set_hw_ready(struct iwl_priv *priv)
{
int ret = 0;
iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
/* See if we got it */
ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
HW_READY_TIMEOUT);
if (ret != -ETIMEDOUT)
priv->hw_ready = true;
else
priv->hw_ready = false;
IWL_DEBUG_INFO(priv, "hardware %s\n",
(priv->hw_ready == 1) ? "ready" : "not ready");
return ret;
}
static int iwl_prepare_card_hw(struct iwl_priv *priv)
{
int ret = 0;
IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PREPARE);
ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
if (ret != -ETIMEDOUT)
iwl_set_hw_ready(priv);
return ret;
}
#define MAX_HW_RESTARTS 5
static int __iwl_up(struct iwl_priv *priv)
......@@ -1809,6 +1852,13 @@ static int __iwl_up(struct iwl_priv *priv)
return -EIO;
}
iwl_prepare_card_hw(priv);
if (!priv->hw_ready) {
IWL_WARN(priv, "Exit HW not ready\n");
return -EIO;
}
/* If platform's RF_KILL switch is NOT set to KILL */
if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
clear_bit(STATUS_RF_KILL_HW, &priv->status);
......@@ -2896,6 +2946,12 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
* PCI Tx retries from interfering with C3 CPU state */
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
iwl_prepare_card_hw(priv);
if (!priv->hw_ready) {
IWL_WARN(priv, "Failed, HW not ready\n");
goto out_iounmap;
}
/* amp init */
err = priv->cfg->ops->lib->apm_ops.init(priv);
if (err < 0) {
......
......@@ -126,9 +126,9 @@
#define CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A (0x00080000)
#define CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM (0x00200000)
#define CSR_HW_IF_CONFIG_REG_BIT_PCI_OWN_SEM (0x00400000)
#define CSR_HW_IF_CONFIG_REG_BIT_ME_OWN (0x02000000)
#define CSR_HW_IF_CONFIG_REG_BIT_WAKE_ME (0x08000000)
#define CSR_HW_IF_CONFIG_REG_BIT_NIC_READY (0x00400000)
#define CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE (0x02000000)
#define CSR_HW_IF_CONFIG_REG_PREPARE (0x08000000)
#define CSR_INT_PERIODIC_DIS (0x00)
#define CSR_INT_PERIODIC_ENA (0xFF)
......
......@@ -1113,7 +1113,7 @@ struct iwl_priv {
u32 disable_tx_power_cal;
struct work_struct run_time_calib_work;
struct timer_list statistics_periodic;
bool hw_ready;
/*For 3945*/
#define IWL_DEFAULT_TX_POWER 0x0F
......
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