drivers/pcmcia/cs_internal.h

   1 /*
   2  * cs_internal.h -- definitions internal to the PCMCIA core modules
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * The initial developer of the original code is David A. Hinds
   9  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  10  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  11  *
  12  * (C) 1999             David A. Hinds
  13  * (C) 2003 - 2008      Dominik Brodowski
  14  *
  15  *
  16  * This file contains definitions _only_ needed by the PCMCIA core modules.
  17  * It must not be included by PCMCIA socket drivers or by PCMCIA device
  18  * drivers.
  19  */
  20
  21 #ifndef _LINUX_CS_INTERNAL_H
  22 #define _LINUX_CS_INTERNAL_H
  23
  24 #include <linux/kref.h>
  25
  26 /* Flags in client state */
  27 #define CLIENT_WIN_REQ(i)       (0x1<<(i))
  28
  29 /* Each card function gets one of these guys */
  30 typedef struct config_t {
  31         struct kref     ref;
  32         unsigned int    state;
  33         unsigned int    Attributes;
  34         unsigned int    IntType;
  35         unsigned int    ConfigBase;
  36         unsigned char   Status, Pin, Copy, Option, ExtStatus;
  37         unsigned int    CardValues;
  38         io_req_t        io;
  39         struct {
  40                 u_int   Attributes;
  41         } irq;
  42 } config_t;
  43
  44
  45 struct cis_cache_entry {
  46         struct list_head        node;
  47         unsigned int            addr;
  48         unsigned int            len;
  49         unsigned int            attr;
  50         unsigned char           cache[0];
  51 };
  52
  53 struct pccard_resource_ops {
  54         int     (*validate_mem)         (struct pcmcia_socket *s);
  55         int     (*adjust_io_region)     (struct resource *res,
  56                                          unsigned long r_start,
  57                                          unsigned long r_end,
  58                                          struct pcmcia_socket *s);
  59         struct resource* (*find_io)     (unsigned long base, int num,
  60                                          unsigned long align,
  61                                          struct pcmcia_socket *s);
  62         struct resource* (*find_mem)    (unsigned long base, unsigned long num,
  63                                          unsigned long align, int low,
  64                                          struct pcmcia_socket *s);
  65         int     (*add_io)               (struct pcmcia_socket *s,
  66                                          unsigned int action,
  67                                          unsigned long r_start,
  68                                          unsigned long r_end);
  69         int     (*add_mem)              (struct pcmcia_socket *s,
  70                                          unsigned int action,
  71                                          unsigned long r_start,
  72                                          unsigned long r_end);
  73         int     (*init)                 (struct pcmcia_socket *s);
  74         void    (*exit)                 (struct pcmcia_socket *s);
  75 };
  76
  77 /* Flags in config state */
  78 #define CONFIG_LOCKED           0x01
  79 #define CONFIG_IRQ_REQ          0x02
  80 #define CONFIG_IO_REQ           0x04
  81
  82 /* Flags in socket state */
  83 #define SOCKET_PRESENT          0x0008
  84 #define SOCKET_INUSE            0x0010
  85 #define SOCKET_SUSPEND          0x0080
  86 #define SOCKET_WIN_REQ(i)       (0x0100<<(i))
  87 #define SOCKET_CARDBUS          0x8000
  88 #define SOCKET_CARDBUS_CONFIG   0x10000
  89
  90 static inline int cs_socket_get(struct pcmcia_socket *skt)
  91 {
  92         int ret;
  93
  94         WARN_ON(skt->state & SOCKET_INUSE);
  95
  96         ret = try_module_get(skt->owner);
  97         if (ret)
  98                 skt->state |= SOCKET_INUSE;
  99         return ret;
 100 }
 101
 102 static inline void cs_socket_put(struct pcmcia_socket *skt)
 103 {
 104         if (skt->state & SOCKET_INUSE) {
 105                 skt->state &= ~SOCKET_INUSE;
 106                 module_put(skt->owner);
 107         }
 108 }
 109
 110 #ifdef CONFIG_PCMCIA_DEBUG
 111 extern int cs_debug_level(int);
 112
 113 #define cs_dbg(skt, lvl, fmt, arg...) do {              \
 114         if (cs_debug_level(lvl))                        \
 115                 dev_printk(KERN_DEBUG, &skt->dev,       \
 116                  "cs: " fmt, ## arg);                   \
 117 } while (0)
 118 #define __cs_dbg(lvl, fmt, arg...) do {                 \
 119         if (cs_debug_level(lvl))                        \
 120                 printk(KERN_DEBUG                       \
 121                  "cs: " fmt, ## arg);                   \
 122 } while (0)
 123
 124 #else
 125 #define cs_dbg(skt, lvl, fmt, arg...) do { } while (0)
 126 #define __cs_dbg(lvl, fmt, arg...) do { } while (0)
 127 #endif
 128
 129 #define cs_err(skt, fmt, arg...) \
 130         dev_printk(KERN_ERR, &skt->dev, "cs: " fmt, ## arg)
 131
 132
 133 /*
 134  * Stuff internal to module "pcmcia_core":
 135  */
 136
 137 /* cistpl.c */
 138 int verify_cis_cache(struct pcmcia_socket *s);
 139
 140 /* rsrc_mgr.c */
 141 void release_resource_db(struct pcmcia_socket *s);
 142
 143 /* socket_sysfs.c */
 144 extern int pccard_sysfs_add_socket(struct device *dev);
 145 extern void pccard_sysfs_remove_socket(struct device *dev);
 146
 147 /* cardbus.c */
 148 int cb_alloc(struct pcmcia_socket *s);
 149 void cb_free(struct pcmcia_socket *s);
 150 int read_cb_mem(struct pcmcia_socket *s, int space, u_int addr, u_int len,
 151                 void *ptr);
 152
 153
 154
 155 /*
 156  * Stuff exported by module "pcmcia_core" to module "pcmcia"
 157  */
 158
 159 struct pcmcia_callback{
 160         struct module   *owner;
 161         int             (*event) (struct pcmcia_socket *s,
 162                                   event_t event, int priority);
 163         void            (*requery) (struct pcmcia_socket *s, int new_cis);
 164         int             (*suspend) (struct pcmcia_socket *s);
 165         int             (*resume) (struct pcmcia_socket *s);
 166 };
 167
 168 /* cs.c */
 169 extern struct rw_semaphore pcmcia_socket_list_rwsem;
 170 extern struct list_head pcmcia_socket_list;
 171 extern struct class pcmcia_socket_class;
 172
 173 int pcmcia_get_window(struct pcmcia_socket *s,
 174                       window_handle_t *handle,
 175                       int idx,
 176                       win_req_t *req);
 177 int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c);
 178 struct pcmcia_socket *pcmcia_get_socket_by_nr(unsigned int nr);
 179
 180 int pcmcia_suspend_card(struct pcmcia_socket *skt);
 181 int pcmcia_resume_card(struct pcmcia_socket *skt);
 182
 183 int pcmcia_eject_card(struct pcmcia_socket *skt);
 184 int pcmcia_insert_card(struct pcmcia_socket *skt);
 185
 186 struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt);
 187 void pcmcia_put_socket(struct pcmcia_socket *skt);
 188
 189 /* cistpl.c */
 190 int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr,
 191                         u_int addr, u_int len, void *ptr);
 192 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr,
 193                           u_int addr, u_int len, void *ptr);
 194 void release_cis_mem(struct pcmcia_socket *s);
 195 void destroy_cis_cache(struct pcmcia_socket *s);
 196 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
 197                       cisdata_t code, void *parse);
 198 int pcmcia_replace_cis(struct pcmcia_socket *s,
 199                        const u8 *data, const size_t len);
 200 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *count);
 201
 202 /* rsrc_mgr.c */
 203 int pcmcia_validate_mem(struct pcmcia_socket *s);
 204 struct resource *pcmcia_find_io_region(unsigned long base,
 205                                        int num,
 206                                        unsigned long align,
 207                                        struct pcmcia_socket *s);
 208 int pcmcia_adjust_io_region(struct resource *res,
 209                             unsigned long r_start,
 210                             unsigned long r_end,
 211                             struct pcmcia_socket *s);
 212 struct resource *pcmcia_find_mem_region(u_long base,
 213                                         u_long num,
 214                                         u_long align,
 215                                         int low,
 216                                         struct pcmcia_socket *s);
 217
 218 /*
 219  * Stuff internal to module "pcmcia".
 220  */
 221 /* ds.c */
 222 extern struct bus_type pcmcia_bus_type;
 223
 224 /* pcmcia_resource.c */
 225 extern int pcmcia_release_configuration(struct pcmcia_device *p_dev);
 226
 227 #ifdef CONFIG_PCMCIA_IOCTL
 228 /* ds.c */
 229 extern spinlock_t pcmcia_dev_list_lock;
 230
 231 extern struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev);
 232 extern void pcmcia_put_dev(struct pcmcia_device *p_dev);
 233
 234 struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
 235                                         unsigned int function);
 236
 237 /* pcmcia_ioctl.c */
 238 extern void __init pcmcia_setup_ioctl(void);
 239 extern void __exit pcmcia_cleanup_ioctl(void);
 240 extern void handle_event(struct pcmcia_socket *s, event_t event);
 241 extern int handle_request(struct pcmcia_socket *s, event_t event);
 242
 243 #else /* CONFIG_PCMCIA_IOCTL */
 244
 245 static inline void __init pcmcia_setup_ioctl(void) { return; }
 246 static inline void __exit pcmcia_cleanup_ioctl(void) { return; }
 247 static inline void handle_event(struct pcmcia_socket *s, event_t event)
 248 {
 249         return;
 250 }
 251 static inline int handle_request(struct pcmcia_socket *s, event_t event)
 252 {
 253         return 0;
 254 }
 255
 256 #endif /* CONFIG_PCMCIA_IOCTL */
 257
 258 #endif /* _LINUX_CS_INTERNAL_H */