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// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
/* Copyright (C) 2014-2017 aQuantia Corporation. */
/* File aq_hw_utils.c: Definitions of helper functions used across
* hardware layer.
*/
#include "atl_hw_regs.h"
#include <rte_io.h>
#include <rte_byteorder.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)
{
return rte_le_to_cpu_32(rte_read32((u8 *)hw->mmio + reg));
}
void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value)
{
rte_write32((rte_cpu_to_le_32(value)), (u8 *)hw->mmio + reg);
}
int aq_hw_err_from_flags(struct aq_hw_s *hw)
{
int err = 0;
if (aq_hw_read_reg(hw, 0x10U) == ~0U)
return -ENXIO;
return err;
}
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