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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};