drivers/pcmcia/cs_internal.h

   1 /*
   2  * cs_internal.h
   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  */
  14
  15 #ifndef _LINUX_CS_INTERNAL_H
  16 #define _LINUX_CS_INTERNAL_H
  17
  18 #include <linux/kref.h>
  19
  20 /* Flags in client state */
  21 #define CLIENT_CONFIG_LOCKED    0x0001
  22 #define CLIENT_IRQ_REQ          0x0002
  23 #define CLIENT_IO_REQ           0x0004
  24 #define CLIENT_UNBOUND          0x0008
  25 #define CLIENT_STALE            0x0010
  26 #define CLIENT_WIN_REQ(i)       (0x1<<(i))
  27 #define CLIENT_CARDBUS          0x8000
  28
  29 #define REGION_MAGIC    0xE3C9
  30 typedef struct region_t {
  31     u_short             region_magic;
  32     u_short             state;
  33     dev_info_t          dev_info;
  34     struct pcmcia_device        *mtd;
  35     u_int               MediaID;
  36     region_info_t       info;
  37 } region_t;
  38
  39 #define REGION_STALE    0x01
  40
  41 /* Each card function gets one of these guys */
  42 typedef struct config_t {
  43         struct kref     ref;
  44     u_int               state;
  45     u_int               Attributes;
  46     u_int               IntType;
  47     u_int               ConfigBase;
  48     u_char              Status, Pin, Copy, Option, ExtStatus;
  49     u_int               CardValues;
  50     io_req_t            io;
  51     struct {
  52         u_int           Attributes;
  53     } irq;
  54 } config_t;
  55
  56 struct cis_cache_entry {
  57         struct list_head        node;
  58         unsigned int            addr;
  59         unsigned int            len;
  60         unsigned int            attr;
  61         unsigned char           cache[0];
  62 };
  63
  64 /* Flags in config state */
  65 #define CONFIG_LOCKED           0x01
  66 #define CONFIG_IRQ_REQ          0x02
  67 #define CONFIG_IO_REQ           0x04
  68
  69 /* Flags in socket state */
  70 #define SOCKET_PRESENT          0x0008
  71 #define SOCKET_INUSE            0x0010
  72 #define SOCKET_SUSPEND          0x0080
  73 #define SOCKET_WIN_REQ(i)       (0x0100<<(i))
  74 #define SOCKET_REGION_INFO      0x4000
  75 #define SOCKET_CARDBUS          0x8000
  76 #define SOCKET_CARDBUS_CONFIG   0x10000
  77
  78 static inline int cs_socket_get(struct pcmcia_socket *skt)
  79 {
  80         int ret;
  81
  82         WARN_ON(skt->state & SOCKET_INUSE);
  83
  84         ret = try_module_get(skt->owner);
  85         if (ret)
  86                 skt->state |= SOCKET_INUSE;
  87         return ret;
  88 }
  89
  90 static inline void cs_socket_put(struct pcmcia_socket *skt)
  91 {
  92         if (skt->state & SOCKET_INUSE) {
  93                 skt->state &= ~SOCKET_INUSE;
  94                 module_put(skt->owner);
  95         }
  96 }
  97
  98 /* In cardbus.c */
  99 int cb_alloc(struct pcmcia_socket *s);
 100 void cb_free(struct pcmcia_socket *s);
 101 int read_cb_mem(struct pcmcia_socket *s, int space, u_int addr, u_int len, void *ptr);
 102
 103 /* In cistpl.c */
 104 int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr,
 105                  u_int addr, u_int len, void *ptr);
 106 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr,
 107                    u_int addr, u_int len, void *ptr);
 108 void release_cis_mem(struct pcmcia_socket *s);
 109 void destroy_cis_cache(struct pcmcia_socket *s);
 110 int verify_cis_cache(struct pcmcia_socket *s);
 111 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse);
 112
 113 /* In rsrc_mgr */
 114 int pcmcia_validate_mem(struct pcmcia_socket *s);
 115 struct resource *pcmcia_find_io_region(unsigned long base, int num, unsigned long align,
 116                    struct pcmcia_socket *s);
 117 int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start,
 118                      unsigned long r_end, struct pcmcia_socket *s);
 119 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
 120                     int low, struct pcmcia_socket *s);
 121 void release_resource_db(struct pcmcia_socket *s);
 122
 123 /* In socket_sysfs.c */
 124 extern struct class_interface pccard_sysfs_interface;
 125
 126 /* In cs.c */
 127 extern struct rw_semaphore pcmcia_socket_list_rwsem;
 128 extern struct list_head pcmcia_socket_list;
 129 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, int idx, win_req_t *req);
 130 int pccard_get_configuration_info(struct pcmcia_socket *s, struct pcmcia_device *p_dev, config_info_t *config);
 131 int pccard_reset_card(struct pcmcia_socket *skt);
 132 int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev, cs_status_t *status);
 133
 134
 135 struct pcmcia_callback{
 136         struct module   *owner;
 137         int             (*event) (struct pcmcia_socket *s, event_t event, int priority);
 138         void            (*requery) (struct pcmcia_socket *s, int new_cis);
 139         int             (*suspend) (struct pcmcia_socket *s);
 140         int             (*resume) (struct pcmcia_socket *s);
 141 };
 142
 143 int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c);
 144
 145 #define cs_socket_name(skt)     ((skt)->dev.bus_id)
 146
 147 #ifdef DEBUG
 148 extern int cs_debug_level(int);
 149
 150 #define cs_dbg(skt, lvl, fmt, arg...) do {              \
 151         if (cs_debug_level(lvl))                        \
 152                 printk(KERN_DEBUG "cs: %s: " fmt,       \
 153                        cs_socket_name(skt) , ## arg);   \
 154 } while (0)
 155
 156 #else
 157 #define cs_dbg(skt, lvl, fmt, arg...) do { } while (0)
 158 #endif
 159
 160 #define cs_err(skt, fmt, arg...) \
 161         printk(KERN_ERR "cs: %s: " fmt, (skt)->dev.bus_id , ## arg)
 162
 163 #endif /* _LINUX_CS_INTERNAL_H */