• Tomas Winkler's avatar
    iwlwifi: fix TX cmd dma unmapping · 499b1883
    Tomas Winkler authored
    This patch:
    1. fixes command DMA unmapping, this might be visible only
    	on platforms where DMA unmapping is no noop such as PPC64 (not tested)
    2. attaches correctly high memory part of the host command buffer
    3. changes structure of TFD TB
    	instead of describing transmit buffer (TB) tuple it describes single
    	TB and makes code more readable on price of one unaligned access
    4. eliminates using of IWL_GET/SET_BITs for TFD handling
    5. renames TFD structures to mach the HW spec
    6. reduces iwl_tx_info size by reserving first TB to the host command
    
    This patch should not have any visible effect on x86 32
    
    This patch is rework of
    iwlwifi: fix DMA code and bugs from
    Johannes Berg <johannes@sipsolutions.net>
    Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
    Cc: Johannes Berg <johannes@sipsolutions.net>
    Reviewed-by: default avatarZhu Yi <yi.zhu@intel.com>
    Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    499b1883
iwl-tx.c 44.3 KB