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iwlwifi: traverse linklist to find the valid OTP block

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For devices using OTP memory, EEPROM image can start from
any one of the OTP blocks. If shadow RAM is disabled, we need to
traverse link list to find the last valid block, then start the EEPROM
image reading.

If OTP is not full, the valid block is the block _before_ the last block
on the link list; the last block on the link list is the empty block
ready for next OTP refresh/update.

If OTP is full, then the last block is the valid block to be used for
configure the device.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy
2009-08-13 13:30:54 -07:00
committed by John W. Linville
parent 3b24716fc9
commit 415e49936b
6 changed files with 191 additions and 43 deletions
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4
drivers/net/wireless/iwlwifi/iwl-core.h
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@@ -209,6 +209,8 @@ struct iwl_mod_params {
* @ucode_api_max: Highest version of uCode API supported by driver.
* @ucode_api_min: Lowest version of uCode API supported by driver.
* @pa_type: used by 6000 series only to identify the type of Power Amplifier
* @max_ll_items: max number of OTP blocks
* @shadow_ram_support: shadow support for OTP memory
*
* We enable the driver to be backward compatible wrt API version. The
* driver specifies which APIs it supports (with @ucode_api_max being the
@@ -247,6 +249,8 @@ struct iwl_cfg {
bool need_pll_cfg;
bool use_isr_legacy;
enum iwl_pa_type pa_type;
const u16 max_ll_items;
const bool shadow_ram_support;
};
/***************************