cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ax88796c_spi.h (1757B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (c) 2010 ASIX Electronics Corporation
      4 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
      5 *
      6 * ASIX AX88796C SPI Fast Ethernet Linux driver
      7 */
      8
      9#ifndef _AX88796C_SPI_H
     10#define _AX88796C_SPI_H
     11
     12#include <linux/spi/spi.h>
     13#include <linux/types.h>
     14
     15/* Definition of SPI command */
     16#define AX_SPICMD_WRITE_TXQ		0x02
     17#define AX_SPICMD_READ_REG		0x03
     18#define AX_SPICMD_READ_STATUS		0x05
     19#define AX_SPICMD_READ_RXQ		0x0B
     20#define AX_SPICMD_BIDIR_WRQ		0xB2
     21#define AX_SPICMD_WRITE_REG		0xD8
     22#define AX_SPICMD_EXIT_PWD		0xAB
     23
     24extern const u8 ax88796c_rx_cmd_buf[];
     25extern const u8 ax88796c_tx_cmd_buf[];
     26
     27struct axspi_data {
     28	struct spi_device	*spi;
     29	struct spi_message	rx_msg;
     30	struct spi_transfer	spi_rx_xfer[2];
     31	u8			cmd_buf[6];
     32	u8			rx_buf[6];
     33	u8			comp;
     34};
     35
     36struct spi_status {
     37	u16 isr;
     38	u8 status;
     39#	define AX_STATUS_READY		0x80
     40};
     41
     42int axspi_read_rxq(struct axspi_data *ax_spi, void *data, int len);
     43int axspi_write_txq(const struct axspi_data *ax_spi, void *data, int len);
     44u16 axspi_read_reg(struct axspi_data *ax_spi, u8 reg);
     45int axspi_write_reg(struct axspi_data *ax_spi, u8 reg, u16 value);
     46int axspi_read_status(struct axspi_data *ax_spi, struct spi_status *status);
     47int axspi_wakeup(struct axspi_data *ax_spi);
     48
     49static inline u16 AX_READ(struct axspi_data *ax_spi, u8 offset)
     50{
     51	return axspi_read_reg(ax_spi, offset);
     52}
     53
     54static inline int AX_WRITE(struct axspi_data *ax_spi, u16 value, u8 offset)
     55{
     56	return axspi_write_reg(ax_spi, offset, value);
     57}
     58
     59static inline int AX_READ_STATUS(struct axspi_data *ax_spi,
     60				 struct spi_status *status)
     61{
     62	return axspi_read_status(ax_spi, status);
     63}
     64
     65static inline int AX_WAKEUP(struct axspi_data *ax_spi)
     66{
     67	return axspi_wakeup(ax_spi);
     68}
     69#endif