| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| #ifndef _SPI_DEVICE_H_ |
| #define _SPI_DEVICE_H_ |
| |
| #include <stddef.h> |
| |
| #include "common.h" |
| |
| #define SPI_DEVICE0_BASE_ADDR 0x40020000 |
| |
| #include "spi_device_regs.h" |
| |
| #define SPID_SRAM_ADDR SPI_DEVICE_BUFFER(SPI_DEVICE0_BASE_ADDR) |
| #define SPID_RXF_BASE 0x000 |
| #define SPID_RXF_SIZE 0x400 |
| #define SPID_TXF_BASE 0x600 |
| #define SPID_TXF_SIZE 0x200 |
| |
| #define SPID_SRAM_SIZE (0x800) |
| |
| /* Note: these will correctly remove the phase bit */ |
| #define READ32_RXFPTR(P) \ |
| REG32(SPID_SRAM_ADDR + SPID_RXF_BASE + ((P) & (SPID_RXF_SIZE - 1))) |
| |
| #define ACCESS32_TXFPTR(P) \ |
| REG32(SPID_SRAM_ADDR + SPID_TXF_BASE + ((P) & ((SPID_TXF_SIZE - 1) & ~0x3))) |
| |
| void spid_init(void); |
| size_t spid_send(void *data, size_t len_bytes); |
| size_t spid_read_nb(void *data, size_t len); |
| |
| #endif /* _SPI_DEVICE_H_ */ |
