1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * ss.h
4 *
5 * The initial developer of the original code is David A. Hinds
6 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
7 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
8 *
9 * (C) 1999 David A. Hinds
10 */
11
12 #ifndef _LINUX_SS_H
13 #define _LINUX_SS_H
14
15 #include <linux/device.h>
16 #include <linux/sched.h> /* task_struct, completion */
17 #include <linux/mutex.h>
18
19 #ifdef CONFIG_CARDBUS
20 #include <linux/pci.h>
21 #endif
22
23 /* Definitions for card status flags for GetStatus */
24 #define SS_WRPROT 0x0001
25 #define SS_CARDLOCK 0x0002
26 #define SS_EJECTION 0x0004
27 #define SS_INSERTION 0x0008
28 #define SS_BATDEAD 0x0010
29 #define SS_BATWARN 0x0020
30 #define SS_READY 0x0040
31 #define SS_DETECT 0x0080
32 #define SS_POWERON 0x0100
33 #define SS_GPI 0x0200
34 #define SS_STSCHG 0x0400
35 #define SS_CARDBUS 0x0800
36 #define SS_3VCARD 0x1000
37 #define SS_XVCARD 0x2000
38 #define SS_PENDING 0x4000
39 #define SS_ZVCARD 0x8000
40
41 /* InquireSocket capabilities */
42 #define SS_CAP_PAGE_REGS 0x0001
43 #define SS_CAP_VIRTUAL_BUS 0x0002
44 #define SS_CAP_MEM_ALIGN 0x0004
45 #define SS_CAP_STATIC_MAP 0x0008
46 #define SS_CAP_PCCARD 0x4000
47 #define SS_CAP_CARDBUS 0x8000
48
49 /* for GetSocket, SetSocket */
50 typedef struct socket_state_t {
51 u_int flags;
52 u_int csc_mask;
53 u_char Vcc, Vpp;
54 u_char io_irq;
55 } socket_state_t;
56
57 extern socket_state_t dead_socket;
58
59 /* Socket configuration flags */
60 #define SS_PWR_AUTO 0x0010
61 #define SS_IOCARD 0x0020
62 #define SS_RESET 0x0040
63 #define SS_DMA_MODE 0x0080
64 #define SS_SPKR_ENA 0x0100
65 #define SS_OUTPUT_ENA 0x0200
66
67 /* Flags for I/O port and memory windows */
68 #define MAP_ACTIVE 0x01
69 #define MAP_16BIT 0x02
70 #define MAP_AUTOSZ 0x04
71 #define MAP_0WS 0x08
72 #define MAP_WRPROT 0x10
73 #define MAP_ATTRIB 0x20
74 #define MAP_USE_WAIT 0x40
75 #define MAP_PREFETCH 0x80
76
77 /* Use this just for bridge windows */
78 #define MAP_IOSPACE 0x20
79
80 /* power hook operations */
81 #define HOOK_POWER_PRE 0x01
82 #define HOOK_POWER_POST 0x02
83
84 typedef struct pccard_io_map {
85 u_char map;
86 u_char flags;
87 u_short speed;
88 phys_addr_t start, stop;
89 } pccard_io_map;
90
91 typedef struct pccard_mem_map {
92 u_char map;
93 u_char flags;
94 u_short speed;
95 phys_addr_t static_start;
96 u_int card_start;
97 struct resource *res;
98 } pccard_mem_map;
99
100 typedef struct io_window_t {
101 u_int InUse, Config;
102 struct resource *res;
103 } io_window_t;
104
105 /* Maximum number of IO windows per socket */
106 #define MAX_IO_WIN 2
107
108 /* Maximum number of memory windows per socket */
109 #define MAX_WIN 4
110
111
112 /*
113 * Socket operations.
114 */
115 struct pcmcia_socket;
116 struct pccard_resource_ops;
117 struct config_t;
118 struct pcmcia_callback;
119 struct user_info_t;
120
121 struct pccard_operations {
122 int (*init)(struct pcmcia_socket *s);
123 int (*suspend)(struct pcmcia_socket *s);
124 int (*get_status)(struct pcmcia_socket *s, u_int *value);
125 int (*set_socket)(struct pcmcia_socket *s, socket_state_t *state);
126 int (*set_io_map)(struct pcmcia_socket *s, struct pccard_io_map *io);
127 int (*set_mem_map)(struct pcmcia_socket *s, struct pccard_mem_map *mem);
128 };
129
130 struct pcmcia_socket {
131 struct module *owner;
132 socket_state_t socket;
133 u_int state;
134 u_int suspended_state; /* state before suspend */
135 u_short functions;
136 u_short lock_count;
137 pccard_mem_map cis_mem;
138 void __iomem *cis_virt;
139 io_window_t io[MAX_IO_WIN];
140 pccard_mem_map win[MAX_WIN];
141 struct list_head cis_cache;
142 size_t fake_cis_len;
143 u8 *fake_cis;
144
145 struct list_head socket_list;
146 struct completion socket_released;
147
148 /* deprecated */
149 unsigned int sock; /* socket number */
150
151
152 /* socket capabilities */
153 u_int features;
154 u_int irq_mask;
155 u_int map_size;
156 u_int io_offset;
157 u_int pci_irq;
158 struct pci_dev *cb_dev;
159
160 /* socket setup is done so resources should be able to be allocated.
161 * Only if set to 1, calls to find_{io,mem}_region are handled, and
162 * insertio events are actually managed by the PCMCIA layer.*/
163 u8 resource_setup_done;
164
165 /* socket operations */
166 struct pccard_operations *ops;
167 struct pccard_resource_ops *resource_ops;
168 void *resource_data;
169
170 /* Zoom video behaviour is so chip specific its not worth adding
171 this to _ops */
172 void (*zoom_video)(struct pcmcia_socket *,
173 int);
174
175 /* so is power hook */
176 int (*power_hook)(struct pcmcia_socket *sock, int operation);
177
178 /* allows tuning the CB bridge before loading driver for the CB card */
179 #ifdef CONFIG_CARDBUS
180 void (*tune_bridge)(struct pcmcia_socket *sock, struct pci_bus *bus);
181 #endif
182
183 /* state thread */
184 struct task_struct *thread;
185 struct completion thread_done;
186 unsigned int thread_events;
187 unsigned int sysfs_events;
188
189 /* For the non-trivial interaction between these locks,
190 * see Documentation/pcmcia/locking.rst */
191 struct mutex skt_mutex;
192 struct mutex ops_mutex;
193
194 /* protects thread_events and sysfs_events */
195 spinlock_t thread_lock;
196
197 /* pcmcia (16-bit) */
198 struct pcmcia_callback *callback;
199
200 #if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
201 /* The following elements refer to 16-bit PCMCIA devices inserted
202 * into the socket */
203 struct list_head devices_list;
204
205 /* the number of devices, used only internally and subject to
206 * incorrectness and change */
207 u8 device_count;
208
209 /* does the PCMCIA card consist of two pseudo devices? */
210 u8 pcmcia_pfc;
211
212 /* non-zero if PCMCIA card is present */
213 atomic_t present;
214
215 /* IRQ to be used by PCMCIA devices. May not be IRQ 0. */
216 unsigned int pcmcia_irq;
217
218 #endif /* CONFIG_PCMCIA */
219
220 /* socket device */
221 struct device dev;
222 /* data internal to the socket driver */
223 void *driver_data;
224 /* status of the card during resume from a system sleep state */
225 int resume_status;
226 };
227
228
229 /* socket drivers must define the resource operations type they use. There
230 * are three options:
231 * - pccard_static_ops iomem and ioport areas are assigned statically
232 * - pccard_iodyn_ops iomem areas is assigned statically, ioport
233 * areas dynamically
234 * If this option is selected, use
235 * "select PCCARD_IODYN" in Kconfig.
236 * - pccard_nonstatic_ops iomem and ioport areas are assigned dynamically.
237 * If this option is selected, use
238 * "select PCCARD_NONSTATIC" in Kconfig.
239 *
240 */
241 extern struct pccard_resource_ops pccard_static_ops;
242 #if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
243 extern struct pccard_resource_ops pccard_iodyn_ops;
244 extern struct pccard_resource_ops pccard_nonstatic_ops;
245 #else
246 /* If PCMCIA is not used, but only CARDBUS, these functions are not used
247 * at all. Therefore, do not use the large (240K!) rsrc_nonstatic module
248 */
249 #define pccard_iodyn_ops pccard_static_ops
250 #define pccard_nonstatic_ops pccard_static_ops
251 #endif
252
253
254 /* socket drivers use this callback in their IRQ handler */
255 extern void pcmcia_parse_events(struct pcmcia_socket *socket,
256 unsigned int events);
257
258 /* to register and unregister a socket */
259 extern int pcmcia_register_socket(struct pcmcia_socket *socket);
260 extern void pcmcia_unregister_socket(struct pcmcia_socket *socket);
261
262
263 #endif /* _LINUX_SS_H */