From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> This is part of the code, but the comment doesn't have it, add pointers to the code and the FIFO usage for 5000 and up. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx> --- drivers/net/wireless/iwlwifi/iwl-prph.h | 19 ++++++++++++++++--- 1 files changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index d393e8f..6d95832 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -254,7 +254,8 @@ * device. A queue maps to only one (selectable by driver) Tx DMA channel, * but one DMA channel may take input from several queues. * - * Tx DMA channels have dedicated purposes. For 4965, they are used as follows: + * Tx DMA channels have dedicated purposes. For 4965, they are used as follows + * (cf. default_queue_to_tx_fifo in iwl-4965.c): * * 0 -- EDCA BK (background) frames, lowest priority * 1 -- EDCA BE (best effort) frames, normal priority @@ -265,9 +266,21 @@ * 6 -- HCCA long frames * 7 -- not used by driver (device-internal only) * + * For 5000 series and up, they are used slightly differently + * (cf. iwl5000_default_queue_to_tx_fifo in iwl-5000.c): + * + * 0 -- EDCA BK (background) frames, lowest priority + * 1 -- EDCA BE (best effort) frames, normal priority + * 2 -- EDCA VI (video) frames, higher priority + * 3 -- EDCA VO (voice) and management frames, highest priority + * 4 -- (TBD) + * 5 -- HCCA short frames + * 6 -- HCCA long frames + * 7 -- Commands + * * Driver should normally map queues 0-6 to Tx DMA/FIFO channels 0-6. - * In addition, driver can map queues 7-15 to Tx DMA/FIFO channels 0-3 to - * support 11n aggregation via EDCA DMA channels. + * In addition, driver can map the remaining queues to Tx DMA/FIFO + * channels 0-3 to support 11n aggregation via EDCA DMA channels. * * The driver sets up each queue to work in one of two modes: * -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
