3 * Copyright (c) 2008 Simtec Electronics
4 * http://armlinux.simtec.co.uk/
5 * Ben Dooks <ben@simtec.co.uk>
7 * AMBA PL093 SSMC (synchronous static memory controller)
8 * See DDI0236.pdf (r0p4) for more details
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.
15 #define SMB_BANK(x) ((x) * 0x20) /* each bank control set is 0x20 apart */
17 /* Offsets for SMBxxxxRy registers */
19 #define SMBIDCYR (0x00)
20 #define SMBWSTRDR (0x04)
21 #define SMBWSTWRR (0x08)
22 #define SMBWSTOENR (0x0C)
23 #define SMBWSTWENR (0x10)
26 #define SMBWSTBRDR (0x1C)
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)
35 /* Notes from datasheet:
39 * WSTOEN is not used with nWAIT
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)
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)
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)
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)
75 /* SSMC status registers */
76 #define SSMCCSR (0x200)
77 #define SSMCCR (0x204)
78 #define SSMCITCR (0x208)
79 #define SSMCITIP (0x20C)
80 #define SSMCITIOP (0x210)