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TOMOYO Linux Cross Reference
Linux/include/pcmcia/ss.h

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  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.txt */
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 */
264 

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