45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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/* Intel Ethernet Switch Host Interface Driver
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* Copyright(c) 2013 - 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*/
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#ifndef _FM10K_COMMON_H_
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#define _FM10K_COMMON_H_
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#include "fm10k_type.h"
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#define FM10K_REMOVED(hw_addr) unlikely(!(hw_addr))
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/* PCI configuration read */
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u16 fm10k_read_pci_cfg_word(struct fm10k_hw *hw, u32 reg);
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/* read operations, indexed using DWORDS */
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u32 fm10k_read_reg(struct fm10k_hw *hw, int reg);
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/* write operations, indexed using DWORDS */
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#define fm10k_write_reg(hw, reg, val) \
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do { \
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u32 __iomem *hw_addr = ACCESS_ONCE((hw)->hw_addr); \
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if (!FM10K_REMOVED(hw_addr)) \
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writel((val), &hw_addr[(reg)]); \
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} while (0)
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/* read ctrl register which has no clear on read fields as PCIe flush */
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#define fm10k_write_flush(hw) fm10k_read_reg((hw), FM10K_CTRL)
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#endif /* _FM10K_COMMON_H_ */
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