2 /* Linux driver for Disk-On-Chip 2000 */
3 /* (c) 1999 Machine Vision Holdings, Inc. */
4 /* Author: David Woodhouse <dwmw2@mvhi.com> */
5 /* $Id: doc2000.h,v 1.17 2003/06/12 01:20:46 gerg Exp $ */
7 #ifndef __MTD_DOC2000_H__
8 #define __MTD_DOC2000_H__
10 #include <linux/mtd/mtd.h>
15 #define DoC_ChipID 0x1000
16 #define DoC_DOCStatus 0x1001
17 #define DoC_DOCControl 0x1002
18 #define DoC_FloorSelect 0x1003
19 #define DoC_CDSNControl 0x1004
20 #define DoC_CDSNDeviceSelect 0x1005
21 #define DoC_ECCConf 0x1006
22 #define DoC_2k_ECCStatus 0x1007
24 #define DoC_CDSNSlowIO 0x100d
25 #define DoC_ECCSyndrome0 0x1010
26 #define DoC_ECCSyndrome1 0x1011
27 #define DoC_ECCSyndrome2 0x1012
28 #define DoC_ECCSyndrome3 0x1013
29 #define DoC_ECCSyndrome4 0x1014
30 #define DoC_ECCSyndrome5 0x1015
31 #define DoC_AliasResolution 0x101b
32 #define DoC_ConfigInput 0x101c
33 #define DoC_ReadPipeInit 0x101d
34 #define DoC_WritePipeTerm 0x101e
35 #define DoC_LastDataRead 0x101f
36 #define DoC_NOP 0x1020
38 #define DoC_Mil_CDSN_IO 0x0800
39 #define DoC_2k_CDSN_IO 0x1800
41 #define DoC_Mplus_NOP 0x1002
42 #define DoC_Mplus_AliasResolution 0x1004
43 #define DoC_Mplus_DOCControl 0x1006
44 #define DoC_Mplus_AccessStatus 0x1008
45 #define DoC_Mplus_DeviceSelect 0x1008
46 #define DoC_Mplus_Configuration 0x100a
47 #define DoC_Mplus_OutputControl 0x100c
48 #define DoC_Mplus_FlashControl 0x1020
49 #define DoC_Mplus_FlashSelect 0x1022
50 #define DoC_Mplus_FlashCmd 0x1024
51 #define DoC_Mplus_FlashAddress 0x1026
52 #define DoC_Mplus_FlashData0 0x1028
53 #define DoC_Mplus_FlashData1 0x1029
54 #define DoC_Mplus_ReadPipeInit 0x102a
55 #define DoC_Mplus_LastDataRead 0x102c
56 #define DoC_Mplus_LastDataRead1 0x102d
57 #define DoC_Mplus_WritePipeTerm 0x102e
58 #define DoC_Mplus_ECCSyndrome0 0x1040
59 #define DoC_Mplus_ECCSyndrome1 0x1041
60 #define DoC_Mplus_ECCSyndrome2 0x1042
61 #define DoC_Mplus_ECCSyndrome3 0x1043
62 #define DoC_Mplus_ECCSyndrome4 0x1044
63 #define DoC_Mplus_ECCSyndrome5 0x1045
64 #define DoC_Mplus_ECCConf 0x1046
65 #define DoC_Mplus_Toggle 0x1046
66 #define DoC_Mplus_DownloadStatus 0x1074
67 #define DoC_Mplus_CtrlConfirm 0x1076
68 #define DoC_Mplus_Power 0x1fff
70 /* How to access the device?
71 * On ARM, it'll be mmap'd directly with 32-bit wide accesses.
72 * On PPC, it's mmap'd and 16-bit wide.
73 * Others use readb/writeb
76 #define ReadDOC_(adr, reg) ((unsigned char)(*(__u32 *)(((unsigned long)adr)+((reg)<<2))))
77 #define WriteDOC_(d, adr, reg) do{ *(__u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
78 #define DOC_IOREMAP_LEN 0x8000
79 #elif defined(__ppc__)
80 #define ReadDOC_(adr, reg) ((unsigned char)(*(__u16 *)(((unsigned long)adr)+((reg)<<1))))
81 #define WriteDOC_(d, adr, reg) do{ *(__u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
82 #define DOC_IOREMAP_LEN 0x4000
84 #define ReadDOC_(adr, reg) readb(((unsigned long)adr) + (reg))
85 #define WriteDOC_(d, adr, reg) writeb(d, ((unsigned long)adr) + (reg))
86 #define DOC_IOREMAP_LEN 0x2000
90 #if defined(__i386__) || defined(__x86_64__)
94 /* These are provided to directly use the DoC_xxx defines */
95 #define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg)
96 #define WriteDOC(d, adr, reg) WriteDOC_(d,adr,DoC_##reg)
98 #define DOC_MODE_RESET 0
99 #define DOC_MODE_NORMAL 1
100 #define DOC_MODE_RESERVED1 2
101 #define DOC_MODE_RESERVED2 3
103 #define DOC_MODE_CLR_ERR 0x80
104 #define DOC_MODE_RST_LAT 0x10
105 #define DOC_MODE_BDECT 0x08
106 #define DOC_MODE_MDWREN 0x04
108 #define DOC_ChipID_Doc2k 0x20
109 #define DOC_ChipID_DocMil 0x30
110 #define DOC_ChipID_DocMilPlus32 0x40
111 #define DOC_ChipID_DocMilPlus16 0x41
113 #define CDSN_CTRL_FR_B 0x80
114 #define CDSN_CTRL_FR_B0 0x40
115 #define CDSN_CTRL_FR_B1 0x80
117 #define CDSN_CTRL_ECC_IO 0x20
118 #define CDSN_CTRL_FLASH_IO 0x10
119 #define CDSN_CTRL_WP 0x08
120 #define CDSN_CTRL_ALE 0x04
121 #define CDSN_CTRL_CLE 0x02
122 #define CDSN_CTRL_CE 0x01
124 #define DOC_ECC_RESET 0
125 #define DOC_ECC_ERROR 0x80
126 #define DOC_ECC_RW 0x20
127 #define DOC_ECC__EN 0x08
128 #define DOC_TOGGLE_BIT 0x04
129 #define DOC_ECC_RESV 0x02
130 #define DOC_ECC_IGNORE 0x01
132 #define DOC_FLASH_CE 0x80
133 #define DOC_FLASH_WP 0x40
134 #define DOC_FLASH_BANK 0x02
136 /* We have to also set the reserved bit 1 for enable */
137 #define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
138 #define DOC_ECC_DIS (DOC_ECC_RESV)
142 unsigned long curadr;
143 unsigned char curmode;
144 /* Also some erase/write/pipeline info when we get that far */
150 #define MAX_FLOORS_MIL 4
151 #define MAX_CHIPS_MIL 1
153 #define MAX_FLOORS_MPLUS 1
154 #define MAX_CHIPS_MPLUS 1
156 #define ADDR_COLUMN 1
158 #define ADDR_COLUMN_PAGE 3
161 unsigned long physadr;
162 unsigned long virtadr;
163 unsigned long totlen;
164 char ChipID; /* Type of DiskOnChip */
167 unsigned long mfr; /* Flash IDs - only one type of flash per device */
172 char interleave; /* Internal interleaving - Millennium Plus style */
173 unsigned long erasesize;
180 struct mtd_info *nextdoc;
181 struct semaphore lock;
184 int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
186 #endif /* __MTD_DOC2000_H__ */