diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-eeprom.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-eeprom.c | 53 |
1 files changed, 44 insertions, 9 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index e14c9952a935..9429cb1c69bd 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -215,12 +215,35 @@ static const struct iwl_txpwr_section enhinfo[] = { int iwlcore_eeprom_verify_signature(struct iwl_priv *priv) { - u32 gp = iwl_read32(priv, CSR_EEPROM_GP); - if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { - IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp); - return -ENOENT; + u32 gp = iwl_read32(priv, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK; + int ret = 0; + + IWL_DEBUG_INFO(priv, "EEPROM signature=0x%08x\n", gp); + switch (gp) { + case CSR_EEPROM_GP_BAD_SIG_EEP_GOOD_SIG_OTP: + if (priv->nvm_device_type != NVM_DEVICE_TYPE_OTP) { + IWL_ERR(priv, "EEPROM with bad signature: 0x%08x\n", + gp); + ret = -ENOENT; + } + break; + case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K: + case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K: + if (priv->nvm_device_type != NVM_DEVICE_TYPE_EEPROM) { + IWL_ERR(priv, "OTP with bad signature: 0x%08x\n", gp); + ret = -ENOENT; + } + break; + case CSR_EEPROM_GP_BAD_SIGNATURE_BOTH_EEP_AND_OTP: + default: + IWL_ERR(priv, "bad EEPROM/OTP signature, type=%s, " + "EEPROM_GP=0x%08x\n", + (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) + ? "OTP" : "EEPROM", gp); + ret = -ENOENT; + break; } - return 0; + return ret; } EXPORT_SYMBOL(iwlcore_eeprom_verify_signature); @@ -283,7 +306,8 @@ 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_direct_bit(priv, CSR_HW_IF_CONFIG_REG, + 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); if (ret >= 0) { @@ -322,7 +346,8 @@ static int iwl_init_otp_access(struct iwl_priv *priv) CSR_GP_CNTRL_REG_FLAG_INIT_DONE); /* wait for clock to be ready */ - ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL, + 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); if (ret < 0) @@ -333,6 +358,14 @@ static int iwl_init_otp_access(struct iwl_priv *priv) udelay(5); iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); + + /* + * CSR auto clock gate disable bit - + * this is only applicable for HW with OTP shadow RAM + */ + if (priv->cfg->shadow_ram_support) + iwl_set_bit(priv, CSR_DBG_LINK_PWR_MGMT_REG, + CSR_RESET_LINK_PWR_MGMT_DISABLED); } return ret; } @@ -345,7 +378,8 @@ static int iwl_read_otp_word(struct iwl_priv *priv, u16 addr, u16 *eeprom_data) _iwl_write32(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); - ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG, + ret = iwl_poll_bit(priv, CSR_EEPROM_REG, + CSR_EEPROM_REG_READ_VALID_MSK, CSR_EEPROM_REG_READ_VALID_MSK, IWL_EEPROM_ACCESS_TIMEOUT); if (ret < 0) { @@ -537,7 +571,8 @@ int iwl_eeprom_init(struct iwl_priv *priv) _iwl_write32(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_MSK_ADDR & (addr << 1)); - ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG, + ret = iwl_poll_bit(priv, CSR_EEPROM_REG, + CSR_EEPROM_REG_READ_VALID_MSK, CSR_EEPROM_REG_READ_VALID_MSK, IWL_EEPROM_ACCESS_TIMEOUT); if (ret < 0) { |
