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-rw-r--r--include/asm-mips/mach-excite/excite_fpga.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/include/asm-mips/mach-excite/excite_fpga.h b/include/asm-mips/mach-excite/excite_fpga.h
new file mode 100644
index 000000000000..38fcda703a0b
--- /dev/null
+++ b/include/asm-mips/mach-excite/excite_fpga.h
@@ -0,0 +1,80 @@
1#ifndef EXCITE_FPGA_H_INCLUDED
2#define EXCITE_FPGA_H_INCLUDED
3
4
5/**
6 * Adress alignment of the individual FPGA bytes.
7 * The address arrangement of the individual bytes of the FPGA is two
8 * byte aligned at the embedded MK2 platform.
9 */
10#ifdef EXCITE_CCI_FPGA_MK2
11typedef unsigned char excite_cci_fpga_align_t __attribute__ ((aligned(2)));
12#else
13typedef unsigned char excite_cci_fpga_align_t;
14#endif
15
16
17/**
18 * Size of Dual Ported RAM.
19 */
20#define EXCITE_DPR_SIZE 263
21
22
23/**
24 * Size of Reserved Status Fields in Dual Ported RAM.
25 */
26#define EXCITE_DPR_STATUS_SIZE 7
27
28
29
30/**
31 * FPGA.
32 * Hardware register layout of the FPGA interface. The FPGA must accessed
33 * byte wise solely.
34 * @see EXCITE_CCI_DPR_MK2
35 */
36typedef struct excite_fpga {
37
38 /**
39 * Dual Ported RAM.
40 */
41 excite_cci_fpga_align_t dpr[EXCITE_DPR_SIZE];
42
43 /**
44 * Status.
45 */
46 excite_cci_fpga_align_t status[EXCITE_DPR_STATUS_SIZE];
47
48#ifdef EXCITE_CCI_FPGA_MK2
49 /**
50 * RM9000 Interrupt.
51 * Write access initiates interrupt at the RM9000 (MIPS) processor of the eXcite.
52 */
53 excite_cci_fpga_align_t rm9k_int;
54#else
55 /**
56 * MK2 Interrupt.
57 * Write access initiates interrupt at the ARM processor of the MK2.
58 */
59 excite_cci_fpga_align_t mk2_int;
60
61 excite_cci_fpga_align_t gap[0x1000-0x10f];
62
63 /**
64 * IRQ Source/Acknowledge.
65 */
66 excite_cci_fpga_align_t rm9k_irq_src;
67
68 /**
69 * IRQ Mask.
70 * Set bits enable the related interrupt.
71 */
72 excite_cci_fpga_align_t rm9k_irq_mask;
73#endif
74
75
76} excite_fpga;
77
78
79
80#endif /* ndef EXCITE_FPGA_H_INCLUDED */