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5653c6462f
Synopsys' ARCompact architecture does not support loading from or storing values to unaligned memory locations. We saw a series of misaligned access exceptions on ARC. To work around this issue, we bulk replaced le16_to_cpu and le32_to_cpu with get_unaligned_le16 and get_unaligned_le32, respectively. We also added le16_unaligned_add_cpu which is similar to le16_add_cpu but works with unaligned values. Signed-off-by: Daniel Mentz <danielmentz@google.com> Signed-off-by: Ganapathi Bhat <gbhat@marvell.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*
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* Marvell Wireless LAN device driver: utility functions
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*
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* Copyright (C) 2011-2014, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*/
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#ifndef _MWIFIEX_UTIL_H_
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#define _MWIFIEX_UTIL_H_
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struct mwifiex_private;
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struct mwifiex_dma_mapping {
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dma_addr_t addr;
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size_t len;
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};
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struct mwifiex_cb {
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struct mwifiex_dma_mapping dma_mapping;
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union {
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struct mwifiex_rxinfo rx_info;
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struct mwifiex_txinfo tx_info;
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};
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};
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/* size/addr for mwifiex_debug_info */
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#define item_size(n) (FIELD_SIZEOF(struct mwifiex_debug_info, n))
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#define item_addr(n) (offsetof(struct mwifiex_debug_info, n))
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/* size/addr for struct mwifiex_adapter */
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#define adapter_item_size(n) (FIELD_SIZEOF(struct mwifiex_adapter, n))
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#define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))
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struct mwifiex_debug_data {
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char name[32]; /* variable/array name */
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u32 size; /* size of the variable/array */
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size_t addr; /* address of the variable/array */
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int num; /* number of variables in an array */
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};
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static inline struct mwifiex_rxinfo *MWIFIEX_SKB_RXCB(struct sk_buff *skb)
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{
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struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
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BUILD_BUG_ON(sizeof(struct mwifiex_cb) > sizeof(skb->cb));
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return &cb->rx_info;
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}
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static inline struct mwifiex_txinfo *MWIFIEX_SKB_TXCB(struct sk_buff *skb)
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{
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struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
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return &cb->tx_info;
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}
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static inline void mwifiex_store_mapping(struct sk_buff *skb,
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struct mwifiex_dma_mapping *mapping)
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{
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struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
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memcpy(&cb->dma_mapping, mapping, sizeof(*mapping));
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}
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static inline void mwifiex_get_mapping(struct sk_buff *skb,
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struct mwifiex_dma_mapping *mapping)
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{
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struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
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memcpy(mapping, &cb->dma_mapping, sizeof(*mapping));
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}
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static inline dma_addr_t MWIFIEX_SKB_DMA_ADDR(struct sk_buff *skb)
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{
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struct mwifiex_dma_mapping mapping;
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mwifiex_get_mapping(skb, &mapping);
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return mapping.addr;
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}
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int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
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struct mwifiex_debug_info *info);
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static inline void le16_unaligned_add_cpu(__le16 *var, u16 val)
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{
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put_unaligned_le16(get_unaligned_le16(var) + val, var);
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}
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#endif /* !_MWIFIEX_UTIL_H_ */
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