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268ee7de SS |
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/sysbus.h" | |
29 | #include "hw/ssi/ssi.h" | |
30 | #include "qemu/fifo32.h" | |
31 | ||
32 | #define TYPE_MSS_SPI "mss-spi" | |
33 | #define MSS_SPI(obj) OBJECT_CHECK(MSSSpiState, (obj), TYPE_MSS_SPI) | |
34 | ||
35 | #define R_SPI_MAX 16 | |
36 | ||
37 | typedef struct MSSSpiState { | |
38 | SysBusDevice parent_obj; | |
39 | ||
40 | MemoryRegion mmio; | |
41 | ||
42 | qemu_irq irq; | |
43 | ||
44 | qemu_irq cs_line; | |
45 | ||
46 | SSIBus *spi; | |
47 | ||
48 | Fifo32 rx_fifo; | |
49 | Fifo32 tx_fifo; | |
50 | ||
51 | int fifo_depth; | |
52 | uint32_t frame_count; | |
53 | bool enabled; | |
54 | ||
55 | uint32_t regs[R_SPI_MAX]; | |
56 | } MSSSpiState; | |
57 | ||
58 | #endif /* HW_MSS_SPI_H */ |