From d98d6fb9f167978eea79c7379301963053c5319c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 4 May 2017 11:01:32 +0200 Subject: [PATCH] iwlwifi: document transmit buffer bits better Properly document the transmit buffer bits using an enum and kernel-doc documentation. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/iwl-fh.h | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h index 77be149276b6..66e5db41e559 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h @@ -6,7 +6,7 @@ * GPL LICENSE SUMMARY * * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2015 - 2016 Intel Deutschland GmbH + * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as @@ -32,7 +32,7 @@ * BSD LICENSE * * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2015 - 2016 Intel Deutschland GmbH + * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -655,6 +655,17 @@ static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr) { return (sizeof(addr) > sizeof(u32) ? upper_32_bits(addr) : 0) & 0xF; } + +/** + * enum iwl_tfd_tb_hi_n_len - TB hi_n_len bits + * @TB_HI_N_LEN_ADDR_HI_MSK: high 4 bits (to make it 36) of DMA address + * @TB_HI_N_LEN_LEN_MSK: length of the TB + */ +enum iwl_tfd_tb_hi_n_len { + TB_HI_N_LEN_ADDR_HI_MSK = 0xf, + TB_HI_N_LEN_LEN_MSK = 0xfff0, +}; + /** * struct iwl_tfd_tb transmit buffer descriptor within transmit frame descriptor * @@ -662,8 +673,7 @@ static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr) * * @lo: low [31:0] portion of the dma address of TX buffer * every even is unaligned on 16 bit boundary - * @hi_n_len 0-3 [35:32] portion of dma - * 4-15 length of the tx buffer + * @hi_n_len: &enum iwl_tfd_tb_hi_n_len */ struct iwl_tfd_tb { __le32 lo; -- 2.39.5