include/pcmcia/ds.h

   1 /*
   2  * ds.h -- 16-bit PCMCIA core support
   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 #ifndef _LINUX_DS_H
  17 #define _LINUX_DS_H
  18
  19 #ifdef __KERNEL__
  20 #include <linux/mod_devicetable.h>
  21 #endif
  22
  23 #include <pcmcia/device_id.h>
  24
  25 #ifdef __KERNEL__
  26 #include <linux/device.h>
  27 #include <pcmcia/ss.h>
  28 #include <asm/atomic.h>
  29
  30 /*
  31  * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus
  32  * a.k.a. PCI drivers
  33  */
  34 struct pcmcia_socket;
  35 struct pcmcia_device;
  36 struct config_t;
  37 struct net_device;
  38
  39 typedef struct resource *window_handle_t;
  40
  41 /* dynamic device IDs for PCMCIA device drivers. See
  42  * Documentation/pcmcia/driver.txt for details.
  43 */
  44 struct pcmcia_dynids {
  45         struct mutex            lock;
  46         struct list_head        list;
  47 };
  48
  49 struct pcmcia_driver {
  50         int (*probe)            (struct pcmcia_device *dev);
  51         void (*remove)          (struct pcmcia_device *dev);
  52
  53         int (*suspend)          (struct pcmcia_device *dev);
  54         int (*resume)           (struct pcmcia_device *dev);
  55
  56         struct module           *owner;
  57         struct pcmcia_device_id *id_table;
  58         struct device_driver    drv;
  59         struct pcmcia_dynids    dynids;
  60 };
  61
  62 /* driver registration */
  63 int pcmcia_register_driver(struct pcmcia_driver *driver);
  64 void pcmcia_unregister_driver(struct pcmcia_driver *driver);
  65
  66 /* for struct resource * array embedded in struct pcmcia_device */
  67 enum {
  68         PCMCIA_IOPORT_0,
  69         PCMCIA_IOPORT_1,
  70         PCMCIA_IOMEM_0,
  71         PCMCIA_IOMEM_1,
  72         PCMCIA_IOMEM_2,
  73         PCMCIA_IOMEM_3,
  74         PCMCIA_NUM_RESOURCES,
  75 };
  76
  77 struct pcmcia_device {
  78         /* the socket and the device_no [for multifunction devices]
  79            uniquely define a pcmcia_device */
  80         struct pcmcia_socket    *socket;
  81
  82         char                    *devname;
  83
  84         u8                      device_no;
  85
  86         /* the hardware "function" device; certain subdevices can
  87          * share one hardware "function" device. */
  88         u8                      func;
  89         struct config_t         *function_config;
  90
  91         struct list_head        socket_device_list;
  92
  93         /* deprecated, will be cleaned up soon */
  94         config_req_t            conf;
  95         window_handle_t         win;
  96
  97         /* device setup */
  98         unsigned int            irq;
  99         struct resource         *resource[PCMCIA_NUM_RESOURCES];
 100
 101         unsigned int            io_lines; /* number of I/O lines */
 102
 103         /* Is the device suspended? */
 104         u16                     suspended:1;
 105
 106         /* Flags whether io, irq, win configurations were
 107          * requested, and whether the configuration is "locked" */
 108         u16                     _irq:1;
 109         u16                     _io:1;
 110         u16                     _win:4;
 111         u16                     _locked:1;
 112
 113         /* Flag whether a "fuzzy" func_id based match is
 114          * allowed. */
 115         u16                     allow_func_id_match:1;
 116
 117         /* information about this device */
 118         u16                     has_manf_id:1;
 119         u16                     has_card_id:1;
 120         u16                     has_func_id:1;
 121
 122         u16                     reserved:4;
 123
 124         u8                      func_id;
 125         u16                     manf_id;
 126         u16                     card_id;
 127
 128         char                    *prod_id[4];
 129
 130         u64                     dma_mask;
 131         struct device           dev;
 132
 133         /* data private to drivers */
 134         void                    *priv;
 135         unsigned int            open;
 136 };
 137
 138 #define to_pcmcia_dev(n) container_of(n, struct pcmcia_device, dev)
 139 #define to_pcmcia_drv(n) container_of(n, struct pcmcia_driver, drv)
 140
 141
 142 /*
 143  * CIS access.
 144  *
 145  * Please use the following functions to access CIS tuples:
 146  * - pcmcia_get_tuple()
 147  * - pcmcia_loop_tuple()
 148  * - pcmcia_get_mac_from_cis()
 149  *
 150  * To parse a tuple_t, pcmcia_parse_tuple() exists. Its interface
 151  * might change in future.
 152  */
 153
 154 /* get the very first CIS entry of type @code. Note that buf is pointer
 155  * to u8 *buf; and that you need to kfree(buf) afterwards. */
 156 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 157                         u8 **buf);
 158
 159 /* loop over CIS entries */
 160 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 161                       int (*loop_tuple) (struct pcmcia_device *p_dev,
 162                                          tuple_t *tuple,
 163                                          void *priv_data),
 164                       void *priv_data);
 165
 166 /* get the MAC address from CISTPL_FUNCE */
 167 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev,
 168                             struct net_device *dev);
 169
 170
 171 /* parse a tuple_t */
 172 int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse);
 173
 174 /* loop CIS entries for valid configuration */
 175 int pcmcia_loop_config(struct pcmcia_device *p_dev,
 176                        int      (*conf_check)   (struct pcmcia_device *p_dev,
 177                                                  cistpl_cftable_entry_t *cf,
 178                                                  cistpl_cftable_entry_t *dflt,
 179                                                  unsigned int vcc,
 180                                                  void *priv_data),
 181                        void *priv_data);
 182
 183 /* is the device still there? */
 184 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *p_dev);
 185
 186 /* low-level interface reset */
 187 int pcmcia_reset_card(struct pcmcia_socket *skt);
 188
 189 /* CIS config */
 190 int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val);
 191 int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val);
 192
 193 /* device configuration */
 194 int pcmcia_request_io(struct pcmcia_device *p_dev);
 195
 196 int __must_check
 197 __pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
 198                                 irq_handler_t handler);
 199 static inline __must_check __deprecated int
 200 pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
 201                                 irq_handler_t handler)
 202 {
 203         return __pcmcia_request_exclusive_irq(p_dev, handler);
 204 }
 205
 206 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 207                                 irq_handler_t handler);
 208
 209 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
 210                                  config_req_t *req);
 211
 212 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req,
 213                           window_handle_t *wh);
 214 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t win);
 215 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t win,
 216                         unsigned int offset);
 217
 218 int pcmcia_modify_configuration(struct pcmcia_device *p_dev, modconf_t *mod);
 219 void pcmcia_disable_device(struct pcmcia_device *p_dev);
 220
 221 /* IO ports */
 222 #define IO_DATA_PATH_WIDTH      0x18
 223 #define IO_DATA_PATH_WIDTH_8    0x00
 224 #define IO_DATA_PATH_WIDTH_16   0x08
 225 #define IO_DATA_PATH_WIDTH_AUTO 0x10
 226
 227 /* convert flag found in cfgtable to data path width parameter */
 228 static inline int pcmcia_io_cfg_data_width(unsigned int flags)
 229 {
 230         if (!(flags & CISTPL_IO_8BIT))
 231                 return IO_DATA_PATH_WIDTH_16;
 232         if (!(flags & CISTPL_IO_16BIT))
 233                 return IO_DATA_PATH_WIDTH_8;
 234         return IO_DATA_PATH_WIDTH_AUTO;
 235 }
 236
 237 #endif /* __KERNEL__ */
 238
 239 #endif /* _LINUX_DS_H */