blob: 407d1e556c3951c02142b9a6597ad265a36c9ea9 [file] [log] [blame]
Thomas Gleixner61ecfa82005-11-07 11:15:31 +00001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Linux driver for Disk-On-Chip devices
3 *
David Woodhousea1452a32010-08-08 20:58:20 +01004 * Copyright © 1999 Machine Vision Holdings, Inc.
5 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
6 * Copyright © 2002-2003 Greg Ungerer <gerg@snapgear.com>
7 * Copyright © 2002-2003 SnapGear Inc
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 *
David Woodhousea1452a32010-08-08 20:58:20 +01009 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 */
24
25#ifndef __MTD_DOC2000_H__
26#define __MTD_DOC2000_H__
27
28#include <linux/mtd/mtd.h>
Ingo Molnar48b19262006-03-31 02:29:41 -080029#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31#define DoC_Sig1 0
32#define DoC_Sig2 1
33
34#define DoC_ChipID 0x1000
35#define DoC_DOCStatus 0x1001
36#define DoC_DOCControl 0x1002
37#define DoC_FloorSelect 0x1003
38#define DoC_CDSNControl 0x1004
39#define DoC_CDSNDeviceSelect 0x1005
40#define DoC_ECCConf 0x1006
41#define DoC_2k_ECCStatus 0x1007
42
43#define DoC_CDSNSlowIO 0x100d
44#define DoC_ECCSyndrome0 0x1010
45#define DoC_ECCSyndrome1 0x1011
46#define DoC_ECCSyndrome2 0x1012
47#define DoC_ECCSyndrome3 0x1013
48#define DoC_ECCSyndrome4 0x1014
49#define DoC_ECCSyndrome5 0x1015
50#define DoC_AliasResolution 0x101b
51#define DoC_ConfigInput 0x101c
52#define DoC_ReadPipeInit 0x101d
53#define DoC_WritePipeTerm 0x101e
54#define DoC_LastDataRead 0x101f
55#define DoC_NOP 0x1020
56
57#define DoC_Mil_CDSN_IO 0x0800
58#define DoC_2k_CDSN_IO 0x1800
59
60#define DoC_Mplus_NOP 0x1002
61#define DoC_Mplus_AliasResolution 0x1004
62#define DoC_Mplus_DOCControl 0x1006
63#define DoC_Mplus_AccessStatus 0x1008
64#define DoC_Mplus_DeviceSelect 0x1008
65#define DoC_Mplus_Configuration 0x100a
66#define DoC_Mplus_OutputControl 0x100c
67#define DoC_Mplus_FlashControl 0x1020
68#define DoC_Mplus_FlashSelect 0x1022
69#define DoC_Mplus_FlashCmd 0x1024
70#define DoC_Mplus_FlashAddress 0x1026
71#define DoC_Mplus_FlashData0 0x1028
72#define DoC_Mplus_FlashData1 0x1029
73#define DoC_Mplus_ReadPipeInit 0x102a
74#define DoC_Mplus_LastDataRead 0x102c
75#define DoC_Mplus_LastDataRead1 0x102d
76#define DoC_Mplus_WritePipeTerm 0x102e
77#define DoC_Mplus_ECCSyndrome0 0x1040
78#define DoC_Mplus_ECCSyndrome1 0x1041
79#define DoC_Mplus_ECCSyndrome2 0x1042
80#define DoC_Mplus_ECCSyndrome3 0x1043
81#define DoC_Mplus_ECCSyndrome4 0x1044
82#define DoC_Mplus_ECCSyndrome5 0x1045
83#define DoC_Mplus_ECCConf 0x1046
84#define DoC_Mplus_Toggle 0x1046
85#define DoC_Mplus_DownloadStatus 0x1074
86#define DoC_Mplus_CtrlConfirm 0x1076
87#define DoC_Mplus_Power 0x1fff
88
Thomas Gleixner61ecfa82005-11-07 11:15:31 +000089/* How to access the device?
90 * On ARM, it'll be mmap'd directly with 32-bit wide accesses.
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 * On PPC, it's mmap'd and 16-bit wide.
Thomas Gleixner61ecfa82005-11-07 11:15:31 +000092 * Others use readb/writeb
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 */
94#if defined(__arm__)
Arnd Bergmannd611d412012-11-06 22:55:27 +010095static inline u8 ReadDOC_(u32 __iomem *addr, unsigned long reg)
96{
97 return __raw_readl(addr + reg);
98}
99static inline void WriteDOC_(u8 data, u32 __iomem *addr, unsigned long reg)
100{
101 __raw_writel(data, addr + reg);
102 wmb();
103}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104#define DOC_IOREMAP_LEN 0x8000
105#elif defined(__ppc__)
Arnd Bergmannd611d412012-11-06 22:55:27 +0100106static inline u8 ReadDOC_(u16 __iomem *addr, unsigned long reg)
107{
108 return __raw_readw(addr + reg);
109}
110static inline void WriteDOC_(u8 data, u16 __iomem *addr, unsigned long reg)
111{
112 __raw_writew(data, addr + reg);
113 wmb();
114}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define DOC_IOREMAP_LEN 0x4000
116#else
117#define ReadDOC_(adr, reg) readb((void __iomem *)(adr) + (reg))
118#define WriteDOC_(d, adr, reg) writeb(d, (void __iomem *)(adr) + (reg))
119#define DOC_IOREMAP_LEN 0x2000
120
121#endif
122
123#if defined(__i386__) || defined(__x86_64__)
124#define USE_MEMCPY
125#endif
126
127/* These are provided to directly use the DoC_xxx defines */
128#define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg)
129#define WriteDOC(d, adr, reg) WriteDOC_(d,adr,DoC_##reg)
130
131#define DOC_MODE_RESET 0
132#define DOC_MODE_NORMAL 1
133#define DOC_MODE_RESERVED1 2
134#define DOC_MODE_RESERVED2 3
135
136#define DOC_MODE_CLR_ERR 0x80
137#define DOC_MODE_RST_LAT 0x10
138#define DOC_MODE_BDECT 0x08
139#define DOC_MODE_MDWREN 0x04
140
141#define DOC_ChipID_Doc2k 0x20
142#define DOC_ChipID_Doc2kTSOP 0x21 /* internal number for MTD */
143#define DOC_ChipID_DocMil 0x30
144#define DOC_ChipID_DocMilPlus32 0x40
145#define DOC_ChipID_DocMilPlus16 0x41
146
147#define CDSN_CTRL_FR_B 0x80
148#define CDSN_CTRL_FR_B0 0x40
149#define CDSN_CTRL_FR_B1 0x80
150
151#define CDSN_CTRL_ECC_IO 0x20
152#define CDSN_CTRL_FLASH_IO 0x10
153#define CDSN_CTRL_WP 0x08
154#define CDSN_CTRL_ALE 0x04
155#define CDSN_CTRL_CLE 0x02
156#define CDSN_CTRL_CE 0x01
157
158#define DOC_ECC_RESET 0
159#define DOC_ECC_ERROR 0x80
160#define DOC_ECC_RW 0x20
161#define DOC_ECC__EN 0x08
162#define DOC_TOGGLE_BIT 0x04
163#define DOC_ECC_RESV 0x02
164#define DOC_ECC_IGNORE 0x01
165
166#define DOC_FLASH_CE 0x80
167#define DOC_FLASH_WP 0x40
168#define DOC_FLASH_BANK 0x02
169
170/* We have to also set the reserved bit 1 for enable */
171#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
172#define DOC_ECC_DIS (DOC_ECC_RESV)
173
174struct Nand {
175 char floor, chip;
176 unsigned long curadr;
177 unsigned char curmode;
178 /* Also some erase/write/pipeline info when we get that far */
179};
180
181#define MAX_FLOORS 4
182#define MAX_CHIPS 4
183
184#define MAX_FLOORS_MIL 1
185#define MAX_CHIPS_MIL 1
186
187#define MAX_FLOORS_MPLUS 2
188#define MAX_CHIPS_MPLUS 1
189
190#define ADDR_COLUMN 1
191#define ADDR_PAGE 2
192#define ADDR_COLUMN_PAGE 3
193
194struct DiskOnChip {
195 unsigned long physadr;
196 void __iomem *virtadr;
197 unsigned long totlen;
198 unsigned char ChipID; /* Type of DiskOnChip */
199 int ioreg;
Thomas Gleixner61ecfa82005-11-07 11:15:31 +0000200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 unsigned long mfr; /* Flash IDs - only one type of flash per device */
202 unsigned long id;
203 int chipshift;
204 char page256;
205 char pageadrlen;
206 char interleave; /* Internal interleaving - Millennium Plus style */
207 unsigned long erasesize;
Thomas Gleixner61ecfa82005-11-07 11:15:31 +0000208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 int curfloor;
210 int curchip;
Thomas Gleixner61ecfa82005-11-07 11:15:31 +0000211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 int numchips;
213 struct Nand *chips;
214 struct mtd_info *nextdoc;
Ingo Molnar48b19262006-03-31 02:29:41 -0800215 struct mutex lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216};
217
218int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
219
220#endif /* __MTD_DOC2000_H__ */