| 1 | /* |
| 2 | * Microsemi SmartFusion2 SPI |
| 3 | * |
| 4 | * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #ifndef HW_MSS_SPI_H |
| 26 | #define HW_MSS_SPI_H |
| 27 | |
| 28 | #include "hw/core/sysbus.h" |
| 29 | #include "hw/ssi/ssi.h" |
| 30 | #include "qemu/fifo32.h" |
| 31 | #include "qom/object.h" |
| 32 | |
| 33 | #define TYPE_MSS_SPI "mss-spi" |
| 34 | OBJECT_DECLARE_SIMPLE_TYPE(MSSSpiState, MSS_SPI) |
| 35 | |
| 36 | #define R_SPI_MAX 16 |
| 37 | |
| 38 | struct MSSSpiState { |
| 39 | SysBusDevice parent_obj; |
| 40 | |
| 41 | MemoryRegion mmio; |
| 42 | |
| 43 | qemu_irq irq; |
| 44 | |
| 45 | qemu_irq cs_line; |
| 46 | |
| 47 | SSIBus *spi; |
| 48 | |
| 49 | Fifo32 rx_fifo; |
| 50 | Fifo32 tx_fifo; |
| 51 | |
| 52 | int fifo_depth; |
| 53 | uint32_t frame_count; |
| 54 | bool enabled; |
| 55 | |
| 56 | uint32_t regs[R_SPI_MAX]; |
| 57 | }; |
| 58 | |
| 59 | #endif /* HW_MSS_SPI_H */ |