summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/mmc/host/mmci.h
blob: a1f5e4f49e2a3367038268f5bfc7ed43961482e4 (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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/*
 *  linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver
 *
 *  Copyright (C) 2003 Deep Blue Solutions, Ltd, 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 MMCIPOWER		0x000
#define MCI_PWR_OFF		0x00
#define MCI_PWR_UP		0x02
#define MCI_PWR_ON		0x03
#define MCI_OD			(1 << 6)
#define MCI_ROD			(1 << 7)
/*
 * The ST Micro version does not have ROD and reuse the voltage registers for
 * direction settings.
 */
#define MCI_ST_DATA2DIREN	(1 << 2)
#define MCI_ST_CMDDIREN		(1 << 3)
#define MCI_ST_DATA0DIREN	(1 << 4)
#define MCI_ST_DATA31DIREN	(1 << 5)
#define MCI_ST_FBCLKEN		(1 << 7)
#define MCI_ST_DATA74DIREN	(1 << 8)

#define MMCICLOCK		0x004
#define MCI_CLK_ENABLE		(1 << 8)
#define MCI_CLK_PWRSAVE		(1 << 9)
#define MCI_CLK_BYPASS		(1 << 10)
#define MCI_4BIT_BUS		(1 << 11)
/*
 * 8bit wide buses, hardware flow contronl, negative edges and clock inversion
 * supported in ST Micro U300 and Ux500 versions
 */
#define MCI_ST_8BIT_BUS		(1 << 12)
#define MCI_ST_U300_HWFCEN	(1 << 13)
#define MCI_ST_UX500_NEG_EDGE	(1 << 13)
#define MCI_ST_UX500_HWFCEN	(1 << 14)
#define MCI_ST_UX500_CLK_INV	(1 << 15)
/* Modified PL180 on Versatile Express platform */
#define MCI_ARM_HWFCEN		(1 << 12)

/* Modified on Qualcomm Integrations */
#define MCI_QCOM_CLK_WIDEBUS_8	(BIT(10) | BIT(11))
#define MCI_QCOM_CLK_FLOWENA	BIT(12)
#define MCI_QCOM_CLK_INVERTOUT	BIT(13)

/* select in latch data and command in */
#define MCI_QCOM_CLK_SELECT_IN_FBCLK	BIT(15)
#define MCI_QCOM_CLK_SELECT_IN_DDR_MODE	(BIT(14) | BIT(15))

#define MMCIARGUMENT		0x008
#define MMCICOMMAND		0x00c
#define MCI_CPSM_RESPONSE	(1 << 6)
#define MCI_CPSM_LONGRSP	(1 << 7)
#define MCI_CPSM_INTERRUPT	(1 << 8)
#define MCI_CPSM_PENDING	(1 << 9)
#define MCI_CPSM_ENABLE		(1 << 10)
/* Argument flag extenstions in the ST Micro versions */
#define MCI_ST_SDIO_SUSP	(1 << 11)
#define MCI_ST_ENCMD_COMPL	(1 << 12)
#define MCI_ST_NIEN		(1 << 13)
#define MCI_ST_CE_ATACMD	(1 << 14)

/* Modified on Qualcomm Integrations */
#define MCI_QCOM_CSPM_DATCMD		BIT(12)
#define MCI_QCOM_CSPM_MCIABORT		BIT(13)
#define MCI_QCOM_CSPM_CCSENABLE		BIT(14)
#define MCI_QCOM_CSPM_CCSDISABLE	BIT(15)
#define MCI_QCOM_CSPM_AUTO_CMD19	BIT(16)
#define MCI_QCOM_CSPM_AUTO_CMD21	BIT(21)

#define MMCIRESPCMD		0x010
#define MMCIRESPONSE0		0x014
#define MMCIRESPONSE1		0x018
#define MMCIRESPONSE2		0x01c
#define MMCIRESPONSE3		0x020
#define MMCIDATATIMER		0x024
#define MMCIDATALENGTH		0x028
#define MMCIDATACTRL		0x02c
#define MCI_DPSM_ENABLE		(1 << 0)
#define MCI_DPSM_DIRECTION	(1 << 1)
#define MCI_DPSM_MODE		(1 << 2)
#define MCI_DPSM_DMAENABLE	(1 << 3)
#define MCI_DPSM_BLOCKSIZE	(1 << 4)
/* Control register extensions in the ST Micro U300 and Ux500 versions */
#define MCI_ST_DPSM_RWSTART	(1 << 8)
#define MCI_ST_DPSM_RWSTOP	(1 << 9)
#define MCI_ST_DPSM_RWMOD	(1 << 10)
#define MCI_ST_DPSM_SDIOEN	(1 << 11)
/* Control register extensions in the ST Micro Ux500 versions */
#define MCI_ST_DPSM_DMAREQCTL	(1 << 12)
#define MCI_ST_DPSM_DBOOTMODEEN	(1 << 13)
#define MCI_ST_DPSM_BUSYMODE	(1 << 14)
#define MCI_ST_DPSM_DDRMODE	(1 << 15)

#define MMCIDATACNT		0x030
#define MMCISTATUS		0x034
#define MCI_CMDCRCFAIL		(1 << 0)
#define MCI_DATACRCFAIL		(1 << 1)
#define MCI_CMDTIMEOUT		(1 << 2)
#define MCI_DATATIMEOUT		(1 << 3)
#define MCI_TXUNDERRUN		(1 << 4)
#define MCI_RXOVERRUN		(1 << 5)
#define MCI_CMDRESPEND		(1 << 6)
#define MCI_CMDSENT		(1 << 7)
#define MCI_DATAEND		(1 << 8)
#define MCI_STARTBITERR		(1 << 9)
#define MCI_DATABLOCKEND	(1 << 10)
#define MCI_CMDACTIVE		(1 << 11)
#define MCI_TXACTIVE		(1 << 12)
#define MCI_RXACTIVE		(1 << 13)
#define MCI_TXFIFOHALFEMPTY	(1 << 14)
#define MCI_RXFIFOHALFFULL	(1 << 15)
#define MCI_TXFIFOFULL		(1 << 16)
#define MCI_RXFIFOFULL		(1 << 17)
#define MCI_TXFIFOEMPTY		(1 << 18)
#define MCI_RXFIFOEMPTY		(1 << 19)
#define MCI_TXDATAAVLBL		(1 << 20)
#define MCI_RXDATAAVLBL		(1 << 21)
/* Extended status bits for the ST Micro variants */
#define MCI_ST_SDIOIT		(1 << 22)
#define MCI_ST_CEATAEND		(1 << 23)
#define MCI_ST_CARDBUSY		(1 << 24)

#define MMCICLEAR		0x038
#define MCI_CMDCRCFAILCLR	(1 << 0)
#define MCI_DATACRCFAILCLR	(1 << 1)
#define MCI_CMDTIMEOUTCLR	(1 << 2)
#define MCI_DATATIMEOUTCLR	(1 << 3)
#define MCI_TXUNDERRUNCLR	(1 << 4)
#define MCI_RXOVERRUNCLR	(1 << 5)
#define MCI_CMDRESPENDCLR	(1 << 6)
#define MCI_CMDSENTCLR		(1 << 7)
#define MCI_DATAENDCLR		(1 << 8)
#define MCI_STARTBITERRCLR	(1 << 9)
#define MCI_DATABLOCKENDCLR	(1 << 10)
/* Extended status bits for the ST Micro variants */
#define MCI_ST_SDIOITC		(1 << 22)
#define MCI_ST_CEATAENDC	(1 << 23)
#define MCI_ST_BUSYENDC		(1 << 24)

#define MMCIMASK0		0x03c
#define MCI_CMDCRCFAILMASK	(1 << 0)
#define MCI_DATACRCFAILMASK	(1 << 1)
#define MCI_CMDTIMEOUTMASK	(1 << 2)
#define MCI_DATATIMEOUTMASK	(1 << 3)
#define MCI_TXUNDERRUNMASK	(1 << 4)
#define MCI_RXOVERRUNMASK	(1 << 5)
#define MCI_CMDRESPENDMASK	(1 << 6)
#define MCI_CMDSENTMASK		(1 << 7)
#define MCI_DATAENDMASK		(1 << 8)
#define MCI_STARTBITERRMASK	(1 << 9)
#define MCI_DATABLOCKENDMASK	(1 << 10)
#define MCI_CMDACTIVEMASK	(1 << 11)
#define MCI_TXACTIVEMASK	(1 << 12)
#define MCI_RXACTIVEMASK	(1 << 13)
#define MCI_TXFIFOHALFEMPTYMASK	(1 << 14)
#define MCI_RXFIFOHALFFULLMASK	(1 << 15)
#define MCI_TXFIFOFULLMASK	(1 << 16)
#define MCI_RXFIFOFULLMASK	(1 << 17)
#define MCI_TXFIFOEMPTYMASK	(1 << 18)
#define MCI_RXFIFOEMPTYMASK	(1 << 19)
#define MCI_TXDATAAVLBLMASK	(1 << 20)
#define MCI_RXDATAAVLBLMASK	(1 << 21)
/* Extended status bits for the ST Micro variants */
#define MCI_ST_SDIOITMASK	(1 << 22)
#define MCI_ST_CEATAENDMASK	(1 << 23)
#define MCI_ST_BUSYEND		(1 << 24)

#define MMCIMASK1		0x040
#define MMCIFIFOCNT		0x048
#define MMCIFIFO		0x080 /* to 0x0bc */

#define MCI_IRQENABLE	\
	(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|	\
	MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|	\
	MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_STARTBITERRMASK)

/* These interrupts are directed to IRQ1 when two IRQ lines are available */
#define MCI_IRQ1MASK \
	(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
	 MCI_TXFIFOHALFEMPTYMASK)

#define NR_SG		128

struct clk;
struct variant_data;
struct dma_chan;

struct mmci_host_next {
	struct dma_async_tx_descriptor	*dma_desc;
	struct dma_chan			*dma_chan;
	s32				cookie;
};

struct mmci_host {
	phys_addr_t		phybase;
	void __iomem		*base;
	struct mmc_request	*mrq;
	struct mmc_command	*cmd;
	struct mmc_data		*data;
	struct mmc_host		*mmc;
	struct clk		*clk;
	bool			singleirq;

	spinlock_t		lock;

	unsigned int		mclk;
	/* cached value of requested clk in set_ios */
	unsigned int		clock_cache;
	unsigned int		cclk;
	u32			pwr_reg;
	u32			pwr_reg_add;
	u32			clk_reg;
	u32			datactrl_reg;
	u32			busy_status;
	bool			vqmmc_enabled;
	struct mmci_platform_data *plat;
	struct variant_data	*variant;

	u8			hw_designer;
	u8			hw_revision:4;

	struct timer_list	timer;
	unsigned int		oldstat;

	/* pio stuff */
	struct sg_mapping_iter	sg_miter;
	unsigned int		size;
	int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);

#ifdef CONFIG_DMA_ENGINE
	/* DMA stuff */
	struct dma_chan		*dma_current;
	struct dma_chan		*dma_rx_channel;
	struct dma_chan		*dma_tx_channel;
	struct dma_async_tx_descriptor	*dma_desc_current;
	struct mmci_host_next	next_data;

#define dma_inprogress(host)	((host)->dma_current)
#else
#define dma_inprogress(host)	(0)
#endif
};