summaryrefslogtreecommitdiff
path: root/drivers/mmc/wbsd.h
blob: 9005b5241b3cce44c132f13be7e9b5270cfc691c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/*
 *  linux/drivers/mmc/wbsd.h - Winbond W83L51xD SD/MMC driver
 *
 *  Copyright (C) 2004-2005 Pierre Ossman, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#define LOCK_CODE		0xAA

#define WBSD_CONF_SWRST		0x02
#define WBSD_CONF_DEVICE	0x07
#define WBSD_CONF_ID_HI		0x20
#define WBSD_CONF_ID_LO		0x21
#define WBSD_CONF_POWER		0x22
#define WBSD_CONF_PME		0x23
#define WBSD_CONF_PMES		0x24

#define WBSD_CONF_ENABLE	0x30
#define WBSD_CONF_PORT_HI	0x60
#define WBSD_CONF_PORT_LO	0x61
#define WBSD_CONF_IRQ		0x70
#define WBSD_CONF_DRQ		0x74

#define WBSD_CONF_PINS		0xF0

#define DEVICE_SD		0x03

#define WBSD_PINS_DAT3_HI	0x20
#define WBSD_PINS_DAT3_OUT	0x10
#define WBSD_PINS_GP11_HI	0x04
#define WBSD_PINS_DETECT_GP11	0x02
#define WBSD_PINS_DETECT_DAT3	0x01

#define WBSD_CMDR		0x00
#define WBSD_DFR		0x01
#define WBSD_EIR		0x02
#define WBSD_ISR		0x03
#define WBSD_FSR		0x04
#define WBSD_IDXR		0x05
#define WBSD_DATAR		0x06
#define WBSD_CSR		0x07

#define WBSD_EINT_CARD		0x40
#define WBSD_EINT_FIFO_THRE	0x20
#define WBSD_EINT_CCRC		0x10
#define WBSD_EINT_TIMEOUT	0x08
#define WBSD_EINT_PROGEND	0x04
#define WBSD_EINT_CRC		0x02
#define WBSD_EINT_TC		0x01

#define WBSD_INT_PENDING	0x80
#define WBSD_INT_CARD		0x40
#define WBSD_INT_FIFO_THRE	0x20
#define WBSD_INT_CRC		0x10
#define WBSD_INT_TIMEOUT	0x08
#define WBSD_INT_PROGEND	0x04
#define WBSD_INT_BUSYEND	0x02
#define WBSD_INT_TC		0x01

#define WBSD_FIFO_EMPTY		0x80
#define WBSD_FIFO_FULL		0x40
#define WBSD_FIFO_EMTHRE	0x20
#define WBSD_FIFO_FUTHRE	0x10
#define WBSD_FIFO_SZMASK	0x0F

#define WBSD_MSLED		0x20
#define WBSD_POWER_N		0x10
#define WBSD_WRPT		0x04
#define WBSD_CARDPRESENT	0x01

#define WBSD_IDX_CLK		0x01
#define WBSD_IDX_PBSMSB		0x02
#define WBSD_IDX_TAAC		0x03
#define WBSD_IDX_NSAC		0x04
#define WBSD_IDX_PBSLSB		0x05
#define WBSD_IDX_SETUP		0x06
#define WBSD_IDX_DMA		0x07
#define WBSD_IDX_FIFOEN		0x08
#define WBSD_IDX_STATUS		0x10
#define WBSD_IDX_RSPLEN		0x1E
#define WBSD_IDX_RESP0		0x1F
#define WBSD_IDX_RESP1		0x20
#define WBSD_IDX_RESP2		0x21
#define WBSD_IDX_RESP3		0x22
#define WBSD_IDX_RESP4		0x23
#define WBSD_IDX_RESP5		0x24
#define WBSD_IDX_RESP6		0x25
#define WBSD_IDX_RESP7		0x26
#define WBSD_IDX_RESP8		0x27
#define WBSD_IDX_RESP9		0x28
#define WBSD_IDX_RESP10		0x29
#define WBSD_IDX_RESP11		0x2A
#define WBSD_IDX_RESP12		0x2B
#define WBSD_IDX_RESP13		0x2C
#define WBSD_IDX_RESP14		0x2D
#define WBSD_IDX_RESP15		0x2E
#define WBSD_IDX_RESP16		0x2F
#define WBSD_IDX_CRCSTATUS	0x30
#define WBSD_IDX_ISR		0x3F

#define WBSD_CLK_375K		0x00
#define WBSD_CLK_12M		0x01
#define WBSD_CLK_16M		0x02
#define WBSD_CLK_24M		0x03

#define WBSD_DATA_WIDTH		0x01

#define WBSD_DAT3_H		0x08
#define WBSD_FIFO_RESET		0x04
#define WBSD_SOFT_RESET		0x02
#define WBSD_INC_INDEX		0x01

#define WBSD_DMA_SINGLE		0x02
#define WBSD_DMA_ENABLE		0x01

#define WBSD_FIFOEN_EMPTY	0x20
#define WBSD_FIFOEN_FULL	0x10
#define WBSD_FIFO_THREMASK	0x0F

#define WBSD_BLOCK_READ		0x80
#define WBSD_BLOCK_WRITE	0x40
#define WBSD_BUSY		0x20
#define WBSD_CARDTRAFFIC	0x04
#define WBSD_SENDCMD		0x02
#define WBSD_RECVRES		0x01

#define WBSD_RSP_SHORT		0x00
#define WBSD_RSP_LONG		0x01

#define WBSD_CRC_MASK		0x1F
#define WBSD_CRC_OK		0x05 /* S010E (00101) */
#define WBSD_CRC_FAIL		0x0B /* S101E (01011) */

#define WBSD_DMA_SIZE		65536

struct wbsd_host
{
	struct mmc_host*	mmc;		/* MMC structure */
	
	spinlock_t		lock;		/* Mutex */

	int			flags;		/* Driver states */

#define WBSD_FCARD_PRESENT	(1<<0)		/* Card is present */
#define WBSD_FIGNORE_DETECT	(1<<1)		/* Ignore card detection */
	
	struct mmc_request*	mrq;		/* Current request */
	
	u8			isr;		/* Accumulated ISR */
	
	struct scatterlist*	cur_sg;		/* Current SG entry */
	unsigned int		num_sg;		/* Number of entries left */
	void*			mapped_sg;	/* vaddr of mapped sg */
	
	unsigned int		offset;		/* Offset into current entry */
	unsigned int		remain;		/* Data left in curren entry */

	int			size;		/* Total size of transfer */
	
	char*			dma_buffer;	/* ISA DMA buffer */
	dma_addr_t		dma_addr;	/* Physical address for same */

	int			firsterr;	/* See fifo functions */
	
	u8			clk;		/* Current clock speed */
	unsigned char		bus_width;	/* Current bus width */
	
	int			config;		/* Config port */
	u8			unlock_code;	/* Code to unlock config */

	int			chip_id;	/* ID of controller */
	
	int			base;		/* I/O port base */
	int			irq;		/* Interrupt */
	int			dma;		/* DMA channel */
	
	struct tasklet_struct	card_tasklet;	/* Tasklet structures */
	struct tasklet_struct	fifo_tasklet;
	struct tasklet_struct	crc_tasklet;
	struct tasklet_struct	timeout_tasklet;
	struct tasklet_struct	finish_tasklet;
	struct tasklet_struct	block_tasklet;
	
	struct timer_list	detect_timer;	/* Card detection timer */
	struct timer_list	ignore_timer;	/* Ignore detection timer */
};