mirror of https://gitee.com/openkylin/linux.git
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
|
|
* aQuantia Corporation Network Driver
|
|
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*/
|
|
|
|
/* File aq_hw_utils.c: Definitions of helper functions used across
|
|
* hardware layer.
|
|
*/
|
|
|
|
#include "aq_hw_utils.h"
|
|
#include "aq_hw.h"
|
|
|
|
void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk,
|
|
u32 shift, u32 val)
|
|
{
|
|
if (msk ^ ~0) {
|
|
u32 reg_old, reg_new;
|
|
|
|
reg_old = aq_hw_read_reg(aq_hw, addr);
|
|
reg_new = (reg_old & (~msk)) | (val << shift);
|
|
|
|
if (reg_old != reg_new)
|
|
aq_hw_write_reg(aq_hw, addr, reg_new);
|
|
} else {
|
|
aq_hw_write_reg(aq_hw, addr, val);
|
|
}
|
|
}
|
|
|
|
u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift)
|
|
{
|
|
return ((aq_hw_read_reg(aq_hw, addr) & msk) >> shift);
|
|
}
|
|
|
|
u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg)
|
|
{
|
|
u32 value = readl(hw->mmio + reg);
|
|
|
|
if ((~0U) == value && (~0U) == readl(hw->mmio + hw->not_ff_addr))
|
|
aq_utils_obj_set(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG);
|
|
|
|
return value;
|
|
}
|
|
|
|
void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value)
|
|
{
|
|
writel(value, hw->mmio + reg);
|
|
}
|
|
|
|
int aq_hw_err_from_flags(struct aq_hw_s *hw)
|
|
{
|
|
int err = 0;
|
|
|
|
if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_UNPLUG)) {
|
|
err = -ENXIO;
|
|
goto err_exit;
|
|
}
|
|
if (aq_utils_obj_test(&hw->header.flags, AQ_HW_FLAG_ERR_HW)) {
|
|
err = -EIO;
|
|
goto err_exit;
|
|
}
|
|
|
|
err_exit:
|
|
return err;
|
|
}
|