From 8614f360bdc7db8d35609a9c771601f1d45539e5 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Wed, 23 Apr 2008 17:14:55 -0700 Subject: iwlwifi: check eeprom version in pci probe time This patch move eeprom version checking into pci probe stage Signed-off-by: Tomas Winkler Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-4965.c | 32 +++++++++++++++++++++++------ drivers/net/wireless/iwlwifi/iwl-eeprom.c | 11 +++++----- drivers/net/wireless/iwlwifi/iwl-eeprom.h | 3 +++ drivers/net/wireless/iwlwifi/iwl4965-base.c | 4 ++++ 4 files changed, 38 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index d1ddbf34b7fe..a41a83a5f816 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -494,6 +494,31 @@ int iwl4965_hw_rxq_stop(struct iwl_priv *priv) return 0; } +/* + * EEPROM handlers + */ + +static int iwl4965_eeprom_check_version(struct iwl_priv *priv) +{ + u16 eeprom_ver; + u16 calib_ver; + + eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); + + calib_ver = iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET); + + if (eeprom_ver < EEPROM_4965_EEPROM_VERSION || + calib_ver < EEPROM_4965_TX_POWER_VERSION) + goto err; + + return 0; +err: + IWL_ERROR("Unsuported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n", + eeprom_ver, EEPROM_4965_EEPROM_VERSION, + calib_ver, EEPROM_4965_TX_POWER_VERSION); + return -EINVAL; + +} int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src) { int ret; @@ -763,12 +788,6 @@ int iwl4965_hw_nic_init(struct iwl_priv *priv) spin_unlock_irqrestore(&priv->lock, flags); - if (iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET) < - EEPROM_4965_TX_POWER_VERSION) { - IWL_ERROR("Older EEPROM detected! Aborting.\n"); - return -EINVAL; - } - pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link); /* disable L1 entry -- workaround for pre-B1 */ @@ -4354,6 +4373,7 @@ static struct iwl_lib_ops iwl4965_lib = { .verify_signature = iwlcore_eeprom_verify_signature, .acquire_semaphore = iwlcore_eeprom_acquire_semaphore, .release_semaphore = iwlcore_eeprom_release_semaphore, + .check_version = iwl4965_eeprom_check_version, .query_addr = iwlcore_eeprom_query_addr, }, .radio_kill_sw = iwl4965_radio_kill_sw, diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c index efd48ca27a8e..8bec0e32f1fc 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c @@ -279,6 +279,11 @@ void iwl_eeprom_free(struct iwl_priv *priv) } EXPORT_SYMBOL(iwl_eeprom_free); +int iwl_eeprom_check_version(struct iwl_priv *priv) +{ + return priv->cfg->ops->lib->eeprom_ops.check_version(priv); +} +EXPORT_SYMBOL(iwl_eeprom_check_version); const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) { @@ -423,12 +428,6 @@ int iwl_init_channel_map(struct iwl_priv *priv) return 0; } - if (iwl_eeprom_query16(priv, EEPROM_VERSION) < 0x2f) { - IWL_WARNING("Unsupported EEPROM version: 0x%04X\n", - iwl_eeprom_query16(priv, EEPROM_VERSION)); - return -EINVAL; - } - IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n"); priv->channel_count = diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.h b/drivers/net/wireless/iwlwifi/iwl-eeprom.h index d5768146d02f..57fb89d5621b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-eeprom.h +++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.h @@ -134,6 +134,7 @@ struct iwl_eeprom_channel { /* 4965 Specific */ /* 4965 driver does not work with txpower calibration version < 5 */ #define EEPROM_4965_TX_POWER_VERSION (5) +#define EEPROM_4965_EEPROM_VERSION (0x2f) #define EEPROM_4965_CALIB_VERSION_OFFSET (2*0xB6) /* 2 bytes */ #define EEPROM_4965_CALIB_TXPOWER_OFFSET (2*0xE8) /* 48 bytes */ #define EEPROM_4965_BOARD_REVISION (2*0x4F) /* 2 bytes */ @@ -322,6 +323,7 @@ struct iwl_eeprom_ops { int (*verify_signature) (struct iwl_priv *priv); int (*acquire_semaphore) (struct iwl_priv *priv); void (*release_semaphore) (struct iwl_priv *priv); + int (*check_version) (struct iwl_priv *priv); const u8* (*query_addr) (const struct iwl_priv *priv, size_t offset); }; @@ -329,6 +331,7 @@ struct iwl_eeprom_ops { void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac); int iwl_eeprom_init(struct iwl_priv *priv); void iwl_eeprom_free(struct iwl_priv *priv); +int iwl_eeprom_check_version(struct iwl_priv *priv); const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset); u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset); diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index 368fc9a9c2b0..c532584b11e6 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -7479,6 +7479,10 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e IWL_ERROR("Unable to init EEPROM\n"); goto out_iounmap; } + err = iwl_eeprom_check_version(priv); + if (err) + goto out_iounmap; + /* MAC Address location in EEPROM same for 3945/4965 */ iwl_eeprom_get_mac(priv, priv->mac_addr); IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr)); -- cgit v1.2.2