block/export: Add query-block-exports
[qemu.git] / include / hw / ssi / imx_spi.h
1 /*
2 * IMX SPI Controller
3 *
4 * Copyright 2016 Jean-Christophe Dubois <jcd@tribudubois.net>
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 */
9
10 #ifndef IMX_SPI_H
11 #define IMX_SPI_H
12
13 #include "hw/sysbus.h"
14 #include "hw/ssi/ssi.h"
15 #include "qemu/bitops.h"
16 #include "qemu/fifo32.h"
17 #include "qom/object.h"
18
19 #define ECSPI_FIFO_SIZE 64
20
21 #define ECSPI_RXDATA 0
22 #define ECSPI_TXDATA 1
23 #define ECSPI_CONREG 2
24 #define ECSPI_CONFIGREG 3
25 #define ECSPI_INTREG 4
26 #define ECSPI_DMAREG 5
27 #define ECSPI_STATREG 6
28 #define ECSPI_PERIODREG 7
29 #define ECSPI_TESTREG 8
30 #define ECSPI_MSGDATA 16
31 #define ECSPI_MAX 17
32
33 /* ECSPI_CONREG */
34 #define ECSPI_CONREG_EN (1 << 0)
35 #define ECSPI_CONREG_HT (1 << 1)
36 #define ECSPI_CONREG_XCH (1 << 2)
37 #define ECSPI_CONREG_SMC (1 << 3)
38 #define ECSPI_CONREG_CHANNEL_MODE_SHIFT 4
39 #define ECSPI_CONREG_CHANNEL_MODE_LENGTH 4
40 #define ECSPI_CONREG_DRCTL_SHIFT 16
41 #define ECSPI_CONREG_DRCTL_LENGTH 2
42 #define ECSPI_CONREG_CHANNEL_SELECT_SHIFT 18
43 #define ECSPI_CONREG_CHANNEL_SELECT_LENGTH 2
44 #define ECSPI_CONREG_BURST_LENGTH_SHIFT 20
45 #define ECSPI_CONREG_BURST_LENGTH_LENGTH 12
46
47 /* ECSPI_CONFIGREG */
48 #define ECSPI_CONFIGREG_SS_CTL_SHIFT 8
49 #define ECSPI_CONFIGREG_SS_CTL_LENGTH 4
50
51 /* ECSPI_INTREG */
52 #define ECSPI_INTREG_TEEN (1 << 0)
53 #define ECSPI_INTREG_TDREN (1 << 1)
54 #define ECSPI_INTREG_TFEN (1 << 2)
55 #define ECSPI_INTREG_RREN (1 << 3)
56 #define ECSPI_INTREG_RDREN (1 << 4)
57 #define ECSPI_INTREG_RFEN (1 << 5)
58 #define ECSPI_INTREG_ROEN (1 << 6)
59 #define ECSPI_INTREG_TCEN (1 << 7)
60
61 /* ECSPI_DMAREG */
62 #define ECSPI_DMAREG_RXTDEN (1 << 31)
63 #define ECSPI_DMAREG_RXDEN (1 << 23)
64 #define ECSPI_DMAREG_TEDEN (1 << 7)
65 #define ECSPI_DMAREG_RX_THRESHOLD_SHIFT 16
66 #define ECSPI_DMAREG_RX_THRESHOLD_LENGTH 6
67
68 /* ECSPI_STATREG */
69 #define ECSPI_STATREG_TE (1 << 0)
70 #define ECSPI_STATREG_TDR (1 << 1)
71 #define ECSPI_STATREG_TF (1 << 2)
72 #define ECSPI_STATREG_RR (1 << 3)
73 #define ECSPI_STATREG_RDR (1 << 4)
74 #define ECSPI_STATREG_RF (1 << 5)
75 #define ECSPI_STATREG_RO (1 << 6)
76 #define ECSPI_STATREG_TC (1 << 7)
77
78 #define EXTRACT(value, name) extract32(value, name##_SHIFT, name##_LENGTH)
79
80 #define TYPE_IMX_SPI "imx.spi"
81 OBJECT_DECLARE_SIMPLE_TYPE(IMXSPIState, IMX_SPI)
82
83 struct IMXSPIState {
84 /* <private> */
85 SysBusDevice parent_obj;
86
87 /* <public> */
88 MemoryRegion iomem;
89
90 qemu_irq irq;
91
92 qemu_irq cs_lines[4];
93
94 SSIBus *bus;
95
96 uint32_t regs[ECSPI_MAX];
97
98 Fifo32 rx_fifo;
99 Fifo32 tx_fifo;
100
101 int16_t burst_length;
102 };
103
104 #endif /* IMX_SPI_H */