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hmatrix.h
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1 /*
2  * High-Speed Bus Matrix configuration registers
3  *
4  * Copyright (C) 2008 Atmel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #ifndef __HMATRIX_H
11 #define __HMATRIX_H
12 
13 extern struct clk at32_hmatrix_clk;
14 
15 void hmatrix_write_reg(unsigned long offset, u32 value);
16 u32 hmatrix_read_reg(unsigned long offset);
17 
18 void hmatrix_sfr_set_bits(unsigned int slave_id, u32 mask);
19 void hmatrix_sfr_clear_bits(unsigned int slave_id, u32 mask);
20 
21 /* Master Configuration register */
22 #define HMATRIX_MCFG(m) (0x0000 + 4 * (m))
23 /* Undefined length burst limit */
24 # define HMATRIX_MCFG_ULBT_INFINITE 0 /* Infinite length */
25 # define HMATRIX_MCFG_ULBT_SINGLE 1 /* Single Access */
26 # define HMATRIX_MCFG_ULBT_FOUR_BEAT 2 /* Four beat */
27 # define HMATRIX_MCFG_ULBT_EIGHT_BEAT 3 /* Eight beat */
28 # define HMATRIX_MCFG_ULBT_SIXTEEN_BEAT 4 /* Sixteen beat */
29 
30 /* Slave Configuration register */
31 #define HMATRIX_SCFG(s) (0x0040 + 4 * (s))
32 # define HMATRIX_SCFG_SLOT_CYCLE(x) ((x) << 0) /* Max burst cycles */
33 # define HMATRIX_SCFG_DEFMSTR_NONE ( 0 << 16) /* No default master */
34 # define HMATRIX_SCFG_DEFMSTR_LAST ( 1 << 16) /* Last def master */
35 # define HMATRIX_SCFG_DEFMSTR_FIXED ( 2 << 16) /* Fixed def master */
36 # define HMATRIX_SCFG_FIXED_DEFMSTR(m) ((m) << 18) /* Fixed master ID */
37 # define HMATRIX_SCFG_ARBT_ROUND_ROBIN ( 0 << 24) /* RR arbitration */
38 # define HMATRIX_SCFG_ARBT_FIXED_PRIO ( 1 << 24) /* Fixed priority */
39 
40 /* Slave Priority register A (master 0..7) */
41 #define HMATRIX_PRAS(s) (0x0080 + 8 * (s))
42 # define HMATRIX_PRAS_PRIO(m, p) ((p) << ((m) * 4))
43 
44 /* Slave Priority register A (master 8..15) */
45 #define HMATRIX_PRBS(s) (0x0084 + 8 * (s))
46 # define HMATRIX_PRBS_PRIO(m, p) ((p) << (((m) - 8) * 4))
47 
48 /* Master Remap Control Register */
49 #define HMATRIX_MRCR 0x0100
50 # define HMATRIX_MRCR_REMAP(m) ( 1 << (m)) /* Remap master m */
51 
52 /* Special Function Register. Bit definitions are chip-specific */
53 #define HMATRIX_SFR(s) (0x0110 + 4 * (s))
54 
55 #endif /* __HMATRIX_H */