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Ben Dooks78ddb2782009-07-30 23:23:34 +01001/* linux/amba/pl093.h
2 *
3 * Copyright (c) 2008 Simtec Electronics
4 * http://armlinux.simtec.co.uk/
5 * Ben Dooks <ben@simtec.co.uk>
6 *
7 * AMBA PL093 SSMC (synchronous static memory controller)
8 * See DDI0236.pdf (r0p4) for more details
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13*/
14
15#define SMB_BANK(x) ((x) * 0x20) /* each bank control set is 0x20 apart */
16
17/* Offsets for SMBxxxxRy registers */
18
19#define SMBIDCYR (0x00)
20#define SMBWSTRDR (0x04)
21#define SMBWSTWRR (0x08)
22#define SMBWSTOENR (0x0C)
23#define SMBWSTWENR (0x10)
24#define SMBCR (0x14)
25#define SMBSR (0x18)
26#define SMBWSTBRDR (0x1C)
27
28/* Masks for SMB registers */
29#define IDCY_MASK (0xf)
30#define WSTRD_MASK (0xf)
31#define WSTWR_MASK (0xf)
32#define WSTOEN_MASK (0xf)
33#define WSTWEN_MASK (0xf)
34
35/* Notes from datasheet:
36 * WSTOEN <= WSTRD
37 * WSTWEN <= WSTWR
38 *
39 * WSTOEN is not used with nWAIT
40 */
41
42/* SMBCR bit definitions */
43#define SMBCR_BIWRITEEN (1 << 21)
44#define SMBCR_ADDRVALIDWRITEEN (1 << 20)
45#define SMBCR_SYNCWRITE (1 << 17)
46#define SMBCR_BMWRITE (1 << 16)
47#define SMBCR_WRAPREAD (1 << 14)
48#define SMBCR_BIREADEN (1 << 13)
49#define SMBCR_ADDRVALIDREADEN (1 << 12)
50#define SMBCR_SYNCREAD (1 << 9)
51#define SMBCR_BMREAD (1 << 8)
52#define SMBCR_SMBLSPOL (1 << 6)
53#define SMBCR_WP (1 << 3)
54#define SMBCR_WAITEN (1 << 2)
55#define SMBCR_WAITPOL (1 << 1)
56#define SMBCR_RBLE (1 << 0)
57
58#define SMBCR_BURSTLENWRITE_MASK (3 << 18)
59#define SMBCR_BURSTLENWRITE_4 (0 << 18)
60#define SMBCR_BURSTLENWRITE_8 (1 << 18)
61#define SMBCR_BURSTLENWRITE_RESERVED (2 << 18)
62#define SMBCR_BURSTLENWRITE_CONTINUOUS (3 << 18)
63
64#define SMBCR_BURSTLENREAD_MASK (3 << 10)
65#define SMBCR_BURSTLENREAD_4 (0 << 10)
66#define SMBCR_BURSTLENREAD_8 (1 << 10)
67#define SMBCR_BURSTLENREAD_16 (2 << 10)
68#define SMBCR_BURSTLENREAD_CONTINUOUS (3 << 10)
69
70#define SMBCR_MW_MASK (3 << 4)
71#define SMBCR_MW_8BIT (0 << 4)
72#define SMBCR_MW_16BIT (1 << 4)
73#define SMBCR_MW_M32BIT (2 << 4)
74
75/* SSMC status registers */
76#define SSMCCSR (0x200)
77#define SSMCCR (0x204)
78#define SSMCITCR (0x208)
79#define SSMCITIP (0x20C)
80#define SSMCITIOP (0x210)