drivers/net/ethernet/aquantia/atlantic/aq_hw_utils.h

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File aq_hw_utils.h: Declaration of helper functions used across hardware
  11  * layer.
  12  */
  13
  14 #ifndef AQ_HW_UTILS_H
  15 #define AQ_HW_UTILS_H
  16
  17 #include "aq_common.h"
  18
  19 #ifndef HIDWORD
  20 #define LODWORD(_qw)    ((u32)(_qw))
  21 #define HIDWORD(_qw)    ((u32)(((_qw) >> 32) & 0xffffffff))
  22 #endif
  23
  24 #define AQ_HW_SLEEP(_US_) mdelay(_US_)
  25
  26 #define AQ_HW_WAIT_FOR(_B_, _US_, _N_) \
  27 do { \
  28         unsigned int AQ_HW_WAIT_FOR_i; \
  29         for (AQ_HW_WAIT_FOR_i = _N_; (!(_B_)) && (AQ_HW_WAIT_FOR_i);\
  30         --AQ_HW_WAIT_FOR_i) {\
  31                 udelay(_US_); \
  32         } \
  33         if (!AQ_HW_WAIT_FOR_i) {\
  34                 err = -ETIME; \
  35         } \
  36 } while (0)
  37
  38 #define aq_pr_err(...) pr_err(AQ_CFG_DRV_NAME ": " __VA_ARGS__)
  39 #define aq_pr_trace(...) pr_info(AQ_CFG_DRV_NAME ": " __VA_ARGS__)
  40
  41 struct aq_hw_s;
  42
  43 void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
  44                          u32 shift, u32 val);
  45 u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift);
  46 u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg);
  47 void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value);
  48 int aq_hw_err_from_flags(struct aq_hw_s *hw);
  49
  50 #endif /* AQ_HW_UTILS_H */