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path: root/drivers/net/wireless/iwlwifi/iwl-eeprom.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-eeprom.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-eeprom.c50
1 files changed, 30 insertions, 20 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index 37155755efc5..ce2f47306cea 100644
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -25,7 +25,7 @@
* in the file called LICENSE.GPL.
*
* Contact Information:
- * Tomas Winkler <tomas.winkler@intel.com>
+ * Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
@@ -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);
@@ -210,10 +209,8 @@ int iwl_eeprom_init(struct iwl_priv *priv)
{
u16 *e;
u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
- u32 r;
int sz = priv->cfg->eeprom_size;
int ret;
- int i;
u16 addr;
/* allocate eeprom */
@@ -241,22 +238,19 @@ int iwl_eeprom_init(struct iwl_priv *priv)
/* eeprom is an array of 16bit values */
for (addr = 0; addr < sz; addr += sizeof(u16)) {
- _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
- _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
-
- for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
- i += IWL_EEPROM_ACCESS_DELAY) {
- r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
- if (r & CSR_EEPROM_REG_READ_VALID_MSK)
- break;
- udelay(IWL_EEPROM_ACCESS_DELAY);
- }
+ u32 r;
+
+ _iwl_write32(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
- if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
+ ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
+ CSR_EEPROM_REG_READ_VALID_MSK,
+ IWL_EEPROM_ACCESS_TIMEOUT);
+ if (ret < 0) {
IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
- ret = -ETIMEDOUT;
goto done;
}
+ r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
}
ret = 0;
@@ -279,7 +273,23 @@ EXPORT_SYMBOL(iwl_eeprom_free);
int iwl_eeprom_check_version(struct iwl_priv *priv)
{
- return priv->cfg->ops->lib->eeprom_ops.check_version(priv);
+ u16 eeprom_ver;
+ u16 calib_ver;
+
+ eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
+ calib_ver = priv->cfg->ops->lib->eeprom_ops.calib_version(priv);
+
+ if (eeprom_ver < priv->cfg->eeprom_ver ||
+ calib_ver < priv->cfg->eeprom_calib_ver)
+ goto err;
+
+ return 0;
+err:
+ IWL_ERROR("Unsupported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
+ eeprom_ver, priv->cfg->eeprom_ver,
+ calib_ver, priv->cfg->eeprom_calib_ver);
+ return -EINVAL;
+
}
EXPORT_SYMBOL(iwl_eeprom_check_version);