1/*
2 *  Toshiba PCI Secure Digital Host Controller Interface driver
3 *
4 *  Copyright (C) 2014 Ondrej Zary
5 *  Copyright (C) 2007 Richard Betts, All Rights Reserved.
6 *
7 *      Based on asic3_mmc.c Copyright (c) 2005 SDG Systems, LLC
8 *
9 * 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 (at
12 * your option) any later version.
13 */
14
15#define HCLK	33000000	/* 33 MHz (PCI clock) */
16
17#define SD_PCICFG_CLKSTOP	0x40	/* 0x1f = clock controller, 0 = stop */
18#define SD_PCICFG_GATEDCLK	0x41	/* Gated clock */
19#define SD_PCICFG_CLKMODE	0x42	/* Control clock of SD controller */
20#define SD_PCICFG_PINSTATUS	0x44	/* R/O: read status of SD pins */
21#define SD_PCICFG_POWER1	0x48
22#define SD_PCICFG_POWER2	0x49
23#define SD_PCICFG_POWER3	0x4a
24#define SD_PCICFG_CARDDETECT	0x4c
25#define SD_PCICFG_SLOTS		0x50	/* R/O: define support slot number */
26#define SD_PCICFG_EXTGATECLK1	0xf0	/* Could be used for gated clock */
27#define SD_PCICFG_EXTGATECLK2	0xf1	/* Could be used for gated clock */
28#define SD_PCICFG_EXTGATECLK3	0xf9	/* Bit 1: double buffer/single buffer */
29#define SD_PCICFG_SDLED_ENABLE1	0xfa
30#define SD_PCICFG_SDLED_ENABLE2	0xfe
31
32#define SD_PCICFG_CLKMODE_DIV_DISABLE	BIT(0)
33#define SD_PCICFG_CLKSTOP_ENABLE_ALL	0x1f
34#define SD_PCICFG_LED_ENABLE1_START	0x12
35#define SD_PCICFG_LED_ENABLE2_START	0x80
36
37#define SD_PCICFG_PWR1_33V	0x08	/* Set for 3.3 volts */
38#define SD_PCICFG_PWR1_OFF	0x00	/* Turn off power */
39#define SD_PCICFG_PWR2_AUTO	0x02
40
41#define SD_CMD			0x00	/* also for SDIO */
42#define SD_ARG0			0x04	/* also for SDIO */
43#define SD_ARG1			0x06	/* also for SDIO */
44#define SD_STOPINTERNAL		0x08
45#define SD_BLOCKCOUNT		0x0a	/* also for SDIO */
46#define SD_RESPONSE0		0x0c	/* also for SDIO */
47#define SD_RESPONSE1		0x0e	/* also for SDIO */
48#define SD_RESPONSE2		0x10	/* also for SDIO */
49#define SD_RESPONSE3		0x12	/* also for SDIO */
50#define SD_RESPONSE4		0x14	/* also for SDIO */
51#define SD_RESPONSE5		0x16	/* also for SDIO */
52#define SD_RESPONSE6		0x18	/* also for SDIO */
53#define SD_RESPONSE7		0x1a	/* also for SDIO */
54#define SD_CARDSTATUS		0x1c	/* also for SDIO */
55#define SD_BUFFERCTRL		0x1e	/* also for SDIO */
56#define SD_INTMASKCARD		0x20	/* also for SDIO */
57#define SD_INTMASKBUFFER	0x22	/* also for SDIO */
58#define SD_CARDCLOCKCTRL	0x24
59#define SD_CARDXFERDATALEN	0x26	/* also for SDIO */
60#define SD_CARDOPTIONSETUP	0x28	/* also for SDIO */
61#define SD_ERRORSTATUS0		0x2c	/* also for SDIO */
62#define SD_ERRORSTATUS1		0x2e	/* also for SDIO */
63#define SD_DATAPORT		0x30	/* also for SDIO */
64#define SD_TRANSACTIONCTRL	0x34	/* also for SDIO */
65#define SD_SOFTWARERESET	0xe0	/* also for SDIO */
66
67/* registers above marked "also for SDIO" and all SDIO registers below can be
68 * accessed at SDIO_BASE + reg address */
69#define SDIO_BASE	 0x100
70
71#define SDIO_CARDPORTSEL	0x02
72#define SDIO_CARDINTCTRL	0x36
73#define SDIO_CLOCKNWAITCTRL	0x38
74#define SDIO_HOSTINFORMATION	0x3a
75#define SDIO_ERRORCTRL		0x3c
76#define SDIO_LEDCTRL		0x3e
77
78#define SD_TRANSCTL_SET		BIT(8)
79
80#define SD_CARDCLK_DIV_DISABLE	BIT(15)
81#define SD_CARDCLK_ENABLE_CLOCK	BIT(8)
82#define SD_CARDCLK_CLK_DIV_512	BIT(7)
83#define SD_CARDCLK_CLK_DIV_256	BIT(6)
84#define SD_CARDCLK_CLK_DIV_128	BIT(5)
85#define SD_CARDCLK_CLK_DIV_64	BIT(4)
86#define SD_CARDCLK_CLK_DIV_32	BIT(3)
87#define SD_CARDCLK_CLK_DIV_16	BIT(2)
88#define SD_CARDCLK_CLK_DIV_8	BIT(1)
89#define SD_CARDCLK_CLK_DIV_4	BIT(0)
90#define SD_CARDCLK_CLK_DIV_2	0
91
92#define SD_CARDOPT_REQUIRED		0x000e
93#define SD_CARDOPT_DATA_RESP_TIMEOUT(x)	(((x) & 0x0f) << 4) /* 4 bits */
94#define SD_CARDOPT_C2_MODULE_ABSENT	BIT(14)
95#define SD_CARDOPT_DATA_XFR_WIDTH_1	(1 << 15)
96#define SD_CARDOPT_DATA_XFR_WIDTH_4	(0 << 15)
97
98#define SD_CMD_TYPE_CMD			(0 << 6)
99#define SD_CMD_TYPE_ACMD		(1 << 6)
100#define SD_CMD_TYPE_AUTHEN		(2 << 6)
101#define SD_CMD_RESP_TYPE_NONE		(3 << 8)
102#define SD_CMD_RESP_TYPE_EXT_R1		(4 << 8)
103#define SD_CMD_RESP_TYPE_EXT_R1B	(5 << 8)
104#define SD_CMD_RESP_TYPE_EXT_R2		(6 << 8)
105#define SD_CMD_RESP_TYPE_EXT_R3		(7 << 8)
106#define SD_CMD_RESP_TYPE_EXT_R6		(4 << 8)
107#define SD_CMD_RESP_TYPE_EXT_R7		(4 << 8)
108#define SD_CMD_DATA_PRESENT		BIT(11)
109#define SD_CMD_TRANSFER_READ		BIT(12)
110#define SD_CMD_MULTI_BLOCK		BIT(13)
111#define SD_CMD_SECURITY_CMD		BIT(14)
112
113#define SD_STOPINT_ISSUE_CMD12		BIT(0)
114#define SD_STOPINT_AUTO_ISSUE_CMD12	BIT(8)
115
116#define SD_CARD_RESP_END	BIT(0)
117#define SD_CARD_RW_END		BIT(2)
118#define SD_CARD_CARD_REMOVED_0	BIT(3)
119#define SD_CARD_CARD_INSERTED_0	BIT(4)
120#define SD_CARD_PRESENT_0	BIT(5)
121#define SD_CARD_UNK6		BIT(6)
122#define SD_CARD_WRITE_PROTECT	BIT(7)
123#define SD_CARD_CARD_REMOVED_3	BIT(8)
124#define SD_CARD_CARD_INSERTED_3	BIT(9)
125#define SD_CARD_PRESENT_3	BIT(10)
126
127#define SD_BUF_CMD_INDEX_ERR	BIT(16)
128#define SD_BUF_CRC_ERR		BIT(17)
129#define SD_BUF_STOP_BIT_END_ERR	BIT(18)
130#define SD_BUF_DATA_TIMEOUT	BIT(19)
131#define SD_BUF_OVERFLOW		BIT(20)
132#define SD_BUF_UNDERFLOW	BIT(21)
133#define SD_BUF_CMD_TIMEOUT	BIT(22)
134#define SD_BUF_UNK7		BIT(23)
135#define SD_BUF_READ_ENABLE	BIT(24)
136#define SD_BUF_WRITE_ENABLE	BIT(25)
137#define SD_BUF_ILLEGAL_FUNCTION	BIT(29)
138#define SD_BUF_CMD_BUSY		BIT(30)
139#define SD_BUF_ILLEGAL_ACCESS	BIT(31)
140
141#define SD_ERR0_RESP_CMD_ERR			BIT(0)
142#define SD_ERR0_RESP_NON_CMD12_END_BIT_ERR	BIT(2)
143#define SD_ERR0_RESP_CMD12_END_BIT_ERR		BIT(3)
144#define SD_ERR0_READ_DATA_END_BIT_ERR		BIT(4)
145#define SD_ERR0_WRITE_CRC_STATUS_END_BIT_ERR	BIT(5)
146#define SD_ERR0_RESP_NON_CMD12_CRC_ERR		BIT(8)
147#define SD_ERR0_RESP_CMD12_CRC_ERR		BIT(9)
148#define SD_ERR0_READ_DATA_CRC_ERR		BIT(10)
149#define SD_ERR0_WRITE_CMD_CRC_ERR		BIT(11)
150
151#define SD_ERR1_NO_CMD_RESP		BIT(16)
152#define SD_ERR1_TIMEOUT_READ_DATA	BIT(20)
153#define SD_ERR1_TIMEOUT_CRS_STATUS	BIT(21)
154#define SD_ERR1_TIMEOUT_CRC_BUSY	BIT(22)
155
156#define IRQ_DONT_CARE_BITS (SD_CARD_PRESENT_3 \
157	| SD_CARD_WRITE_PROTECT \
158	| SD_CARD_UNK6 \
159	| SD_CARD_PRESENT_0 \
160	| SD_BUF_UNK7 \
161	| SD_BUF_CMD_BUSY)
162
163struct toshsd_host {
164	struct pci_dev *pdev;
165	struct mmc_host *mmc;
166
167	spinlock_t lock;
168
169	struct mmc_request *mrq;/* Current request */
170	struct mmc_command *cmd;/* Current command */
171	struct mmc_data *data;	/* Current data request */
172
173	struct sg_mapping_iter sg_miter; /* for PIO */
174
175	void __iomem *ioaddr; /* mapped address */
176};
177