1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0) */ 2 /* Copyright (C) 2014-2017 aQuantia Corporation. */ 3 4 /* File aq_hw_utils.h: Declaration of helper functions used across hardware 5 * layer. 6 */ 7 8 #ifndef AQ_HW_UTILS_H 9 #define AQ_HW_UTILS_H 10 11 #include <errno.h> 12 #include <rte_common.h> 13 #include <rte_io.h> 14 #include <rte_byteorder.h> 15 #include <rte_random.h> 16 #include <rte_cycles.h> 17 #include "atl_common.h" 18 #include "atl_types.h" 19 20 21 #ifndef HIDWORD 22 #define LODWORD(_qw) ((u32)(_qw)) 23 #define HIDWORD(_qw) ((u32)(((_qw) >> 32) & 0xffffffff)) 24 #endif 25 26 #define AQ_HW_SLEEP(_US_) rte_delay_ms(_US_) 27 28 #define mdelay rte_delay_ms 29 #define udelay rte_delay_us 30 #define ARRAY_SIZE(arr) RTE_DIM(arr) 31 #define BIT(x) (1UL << (x)) 32 33 #define AQ_HW_WAIT_FOR(_B_, _US_, _N_) \ 34 do { \ 35 unsigned int AQ_HW_WAIT_FOR_i; \ 36 for (AQ_HW_WAIT_FOR_i = _N_; (!(_B_)) && (AQ_HW_WAIT_FOR_i);\ 37 --AQ_HW_WAIT_FOR_i) {\ 38 udelay(_US_); \ 39 } \ 40 if (!AQ_HW_WAIT_FOR_i) {\ 41 err = -ETIMEDOUT; \ 42 } \ 43 } while (0) 44 45 #define ATL_WRITE_FLUSH(aq_hw) { (void)aq_hw_read_reg(aq_hw, 0x10); } 46 47 void aq_hw_write_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, 48 u32 shift, u32 val); 49 u32 aq_hw_read_reg_bit(struct aq_hw_s *aq_hw, u32 addr, u32 msk, u32 shift); 50 u32 aq_hw_read_reg(struct aq_hw_s *hw, u32 reg); 51 void aq_hw_write_reg(struct aq_hw_s *hw, u32 reg, u32 value); 52 int aq_hw_err_from_flags(struct aq_hw_s *hw); 53 54 #endif /* AQ_HW_UTILS_H */ 55