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git.proxmox.com Git - ceph.git/blob - ceph/src/seastar/dpdk/drivers/net/atlantic/atl_hw_regs.c
1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
2 /* Copyright (C) 2014-2017 aQuantia Corporation. */
4 /* File aq_hw_utils.c: Definitions of helper functions used across
8 #include "atl_hw_regs.h"
11 #include <rte_byteorder.h>
13 void aq_hw_write_reg_bit(struct aq_hw_s
*aq_hw
, u32 addr
, u32 msk
,
19 reg_old
= aq_hw_read_reg(aq_hw
, addr
);
20 reg_new
= (reg_old
& (~msk
)) | (val
<< shift
);
22 if (reg_old
!= reg_new
)
23 aq_hw_write_reg(aq_hw
, addr
, reg_new
);
25 aq_hw_write_reg(aq_hw
, addr
, val
);
29 u32
aq_hw_read_reg_bit(struct aq_hw_s
*aq_hw
, u32 addr
, u32 msk
, u32 shift
)
31 return ((aq_hw_read_reg(aq_hw
, addr
) & msk
) >> shift
);
34 u32
aq_hw_read_reg(struct aq_hw_s
*hw
, u32 reg
)
36 return rte_le_to_cpu_32(rte_read32((u8
*)hw
->mmio
+ reg
));
39 void aq_hw_write_reg(struct aq_hw_s
*hw
, u32 reg
, u32 value
)
41 rte_write32((rte_cpu_to_le_32(value
)), (u8
*)hw
->mmio
+ reg
);
44 int aq_hw_err_from_flags(struct aq_hw_s
*hw
)
48 if (aq_hw_read_reg(hw
, 0x10U
) == ~0U)