1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  tifm.h - TI FlashMedia driver
4  *
5  *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
6  */
7 
8 #ifndef _TIFM_H
9 #define _TIFM_H
10 
11 #include <linux/spinlock.h>
12 #include <linux/interrupt.h>
13 #include <linux/delay.h>
14 #include <linux/pci.h>
15 #include <linux/workqueue.h>
16 
17 /* Host registers (relative to pci base address): */
18 enum {
19 	FM_SET_INTERRUPT_ENABLE   = 0x008,
20 	FM_CLEAR_INTERRUPT_ENABLE = 0x00c,
21 	FM_INTERRUPT_STATUS       = 0x014
22 };
23 
24 /* Socket registers (relative to socket base address): */
25 enum {
26 	SOCK_CONTROL                   = 0x004,
27 	SOCK_PRESENT_STATE             = 0x008,
28 	SOCK_DMA_ADDRESS               = 0x00c,
29 	SOCK_DMA_CONTROL               = 0x010,
30 	SOCK_DMA_FIFO_INT_ENABLE_SET   = 0x014,
31 	SOCK_DMA_FIFO_INT_ENABLE_CLEAR = 0x018,
32 	SOCK_DMA_FIFO_STATUS           = 0x020,
33 	SOCK_FIFO_CONTROL              = 0x024,
34 	SOCK_FIFO_PAGE_SIZE            = 0x028,
35 	SOCK_MMCSD_COMMAND             = 0x104,
36 	SOCK_MMCSD_ARG_LOW             = 0x108,
37 	SOCK_MMCSD_ARG_HIGH            = 0x10c,
38 	SOCK_MMCSD_CONFIG              = 0x110,
39 	SOCK_MMCSD_STATUS              = 0x114,
40 	SOCK_MMCSD_INT_ENABLE          = 0x118,
41 	SOCK_MMCSD_COMMAND_TO          = 0x11c,
42 	SOCK_MMCSD_DATA_TO             = 0x120,
43 	SOCK_MMCSD_DATA                = 0x124,
44 	SOCK_MMCSD_BLOCK_LEN           = 0x128,
45 	SOCK_MMCSD_NUM_BLOCKS          = 0x12c,
46 	SOCK_MMCSD_BUFFER_CONFIG       = 0x130,
47 	SOCK_MMCSD_SPI_CONFIG          = 0x134,
48 	SOCK_MMCSD_SDIO_MODE_CONFIG    = 0x138,
49 	SOCK_MMCSD_RESPONSE            = 0x144,
50 	SOCK_MMCSD_SDIO_SR             = 0x164,
51 	SOCK_MMCSD_SYSTEM_CONTROL      = 0x168,
52 	SOCK_MMCSD_SYSTEM_STATUS       = 0x16c,
53 	SOCK_MS_COMMAND                = 0x184,
54 	SOCK_MS_DATA                   = 0x188,
55 	SOCK_MS_STATUS                 = 0x18c,
56 	SOCK_MS_SYSTEM                 = 0x190,
57 	SOCK_FIFO_ACCESS               = 0x200
58 };
59 
60 #define TIFM_CTRL_LED             0x00000040
61 #define TIFM_CTRL_FAST_CLK        0x00000100
62 #define TIFM_CTRL_POWER_MASK      0x00000007
63 
64 #define TIFM_SOCK_STATE_OCCUPIED  0x00000008
65 #define TIFM_SOCK_STATE_POWERED   0x00000080
66 
67 #define TIFM_FIFO_ENABLE          0x00000001
68 #define TIFM_FIFO_READY           0x00000001
69 #define TIFM_FIFO_MORE            0x00000008
70 #define TIFM_FIFO_INT_SETALL      0x0000ffff
71 #define TIFM_FIFO_INTMASK         0x00000005
72 
73 #define TIFM_DMA_RESET            0x00000002
74 #define TIFM_DMA_TX               0x00008000
75 #define TIFM_DMA_EN               0x00000001
76 #define TIFM_DMA_TSIZE            0x0000007f
77 
78 #define TIFM_TYPE_XD 1
79 #define TIFM_TYPE_MS 2
80 #define TIFM_TYPE_SD 3
81 
82 struct tifm_device_id {
83 	unsigned char type;
84 };
85 
86 struct tifm_driver;
87 struct tifm_dev {
88 	char __iomem  *addr;
89 	spinlock_t    lock;
90 	unsigned char type;
91 	unsigned int  socket_id;
92 
93 	void          (*card_event)(struct tifm_dev *sock);
94 	void          (*data_event)(struct tifm_dev *sock);
95 
96 	struct device dev;
97 };
98 
99 struct tifm_driver {
100 	struct tifm_device_id *id_table;
101 	int                   (*probe)(struct tifm_dev *dev);
102 	void                  (*remove)(struct tifm_dev *dev);
103 	int                   (*suspend)(struct tifm_dev *dev,
104 					 pm_message_t state);
105 	int                   (*resume)(struct tifm_dev *dev);
106 
107 	struct device_driver  driver;
108 };
109 
110 struct tifm_adapter {
111 	char __iomem        *addr;
112 	spinlock_t          lock;
113 	unsigned int        irq_status;
114 	unsigned int        socket_change_set;
115 	unsigned int        id;
116 	unsigned int        num_sockets;
117 	struct completion   *finish_me;
118 
119 	struct work_struct  media_switcher;
120 	struct device	    dev;
121 
122 	void                (*eject)(struct tifm_adapter *fm,
123 				     struct tifm_dev *sock);
124 	int                 (*has_ms_pif)(struct tifm_adapter *fm,
125 					  struct tifm_dev *sock);
126 
127 	struct tifm_dev     *sockets[];
128 };
129 
130 struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
131 					struct device *dev);
132 int tifm_add_adapter(struct tifm_adapter *fm);
133 void tifm_remove_adapter(struct tifm_adapter *fm);
134 void tifm_free_adapter(struct tifm_adapter *fm);
135 
136 void tifm_free_device(struct device *dev);
137 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
138 				   unsigned char type);
139 
140 int tifm_register_driver(struct tifm_driver *drv);
141 void tifm_unregister_driver(struct tifm_driver *drv);
142 void tifm_eject(struct tifm_dev *sock);
143 int tifm_has_ms_pif(struct tifm_dev *sock);
144 int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
145 		int direction);
146 void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
147 		   int direction);
148 void tifm_queue_work(struct work_struct *work);
149 
tifm_get_drvdata(struct tifm_dev * dev)150 static inline void *tifm_get_drvdata(struct tifm_dev *dev)
151 {
152 	return dev_get_drvdata(&dev->dev);
153 }
154 
tifm_set_drvdata(struct tifm_dev * dev,void * data)155 static inline void tifm_set_drvdata(struct tifm_dev *dev, void *data)
156 {
157 	dev_set_drvdata(&dev->dev, data);
158 }
159 
160 #endif
161