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 <linux/interrupt.h>
  28 #include <pcmcia/ss.h>
  29 #include <linux/atomic.h>
  30
  31
  32 /*
  33  * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus
  34  * a.k.a. PCI drivers
  35  */
  36 struct pcmcia_socket;
  37 struct pcmcia_device;
  38 struct config_t;
  39 struct net_device;
  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         const char              *name;
  51
  52         int (*probe)            (struct pcmcia_device *dev);
  53         void (*remove)          (struct pcmcia_device *dev);
  54
  55         int (*suspend)          (struct pcmcia_device *dev);
  56         int (*resume)           (struct pcmcia_device *dev);
  57
  58         struct module           *owner;
  59         const struct pcmcia_device_id   *id_table;
  60         struct device_driver    drv;
  61         struct pcmcia_dynids    dynids;
  62 };
  63
  64 /* driver registration */
  65 int pcmcia_register_driver(struct pcmcia_driver *driver);
  66 void pcmcia_unregister_driver(struct pcmcia_driver *driver);
  67
  68 /**
  69  * module_pcmcia_driver() - Helper macro for registering a pcmcia driver
  70  * @__pcmcia_driver: pcmcia_driver struct
  71  *
  72  * Helper macro for pcmcia drivers which do not do anything special in module
  73  * init/exit. This eliminates a lot of boilerplate. Each module may only use
  74  * this macro once, and calling it replaces module_init() and module_exit().
  75  */
  76 #define module_pcmcia_driver(__pcmcia_driver) \
  77         module_driver(__pcmcia_driver, pcmcia_register_driver, \
  78                         pcmcia_unregister_driver)
  79
  80 /* for struct resource * array embedded in struct pcmcia_device */
  81 enum {
  82         PCMCIA_IOPORT_0,
  83         PCMCIA_IOPORT_1,
  84         PCMCIA_IOMEM_0,
  85         PCMCIA_IOMEM_1,
  86         PCMCIA_IOMEM_2,
  87         PCMCIA_IOMEM_3,
  88         PCMCIA_NUM_RESOURCES,
  89 };
  90
  91 struct pcmcia_device {
  92         /* the socket and the device_no [for multifunction devices]
  93            uniquely define a pcmcia_device */
  94         struct pcmcia_socket    *socket;
  95
  96         char                    *devname;
  97
  98         u8                      device_no;
  99
 100         /* the hardware "function" device; certain subdevices can
 101          * share one hardware "function" device. */
 102         u8                      func;
 103         struct config_t         *function_config;
 104
 105         struct list_head        socket_device_list;
 106
 107         /* device setup */
 108         unsigned int            irq;
 109         struct resource         *resource[PCMCIA_NUM_RESOURCES];
 110         resource_size_t         card_addr;      /* for the 1st IOMEM resource */
 111         unsigned int            vpp;
 112
 113         unsigned int            config_flags;   /* CONF_ENABLE_ flags below */
 114         unsigned int            config_base;
 115         unsigned int            config_index;
 116         unsigned int            config_regs;    /* PRESENT_ flags below */
 117         unsigned int            io_lines;       /* number of I/O lines */
 118
 119         /* Is the device suspended? */
 120         u16                     suspended:1;
 121
 122         /* Flags whether io, irq, win configurations were
 123          * requested, and whether the configuration is "locked" */
 124         u16                     _irq:1;
 125         u16                     _io:1;
 126         u16                     _win:4;
 127         u16                     _locked:1;
 128
 129         /* Flag whether a "fuzzy" func_id based match is
 130          * allowed. */
 131         u16                     allow_func_id_match:1;
 132
 133         /* information about this device */
 134         u16                     has_manf_id:1;
 135         u16                     has_card_id:1;
 136         u16                     has_func_id:1;
 137
 138         u16                     reserved:4;
 139
 140         u8                      func_id;
 141         u16                     manf_id;
 142         u16                     card_id;
 143
 144         char                    *prod_id[4];
 145
 146         u64                     dma_mask;
 147         struct device           dev;
 148
 149         /* data private to drivers */
 150         void                    *priv;
 151         unsigned int            open;
 152 };
 153
 154 #define to_pcmcia_dev(n) container_of(n, struct pcmcia_device, dev)
 155 #define to_pcmcia_drv(n) container_of(n, struct pcmcia_driver, drv)
 156
 157
 158 /*
 159  * CIS access.
 160  *
 161  * Please use the following functions to access CIS tuples:
 162  * - pcmcia_get_tuple()
 163  * - pcmcia_loop_tuple()
 164  * - pcmcia_get_mac_from_cis()
 165  *
 166  * To parse a tuple_t, pcmcia_parse_tuple() exists. Its interface
 167  * might change in future.
 168  */
 169
 170 /* get the very first CIS entry of type @code. Note that buf is pointer
 171  * to u8 *buf; and that you need to kfree(buf) afterwards. */
 172 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 173                         u8 **buf);
 174
 175 /* loop over CIS entries */
 176 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 177                       int (*loop_tuple) (struct pcmcia_device *p_dev,
 178                                          tuple_t *tuple,
 179                                          void *priv_data),
 180                       void *priv_data);
 181
 182 /* get the MAC address from CISTPL_FUNCE */
 183 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev,
 184                             struct net_device *dev);
 185
 186
 187 /* parse a tuple_t */
 188 int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse);
 189
 190 /* loop CIS entries for valid configuration */
 191 int pcmcia_loop_config(struct pcmcia_device *p_dev,
 192                        int      (*conf_check)   (struct pcmcia_device *p_dev,
 193                                                  void *priv_data),
 194                        void *priv_data);
 195
 196 /* is the device still there? */
 197 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *p_dev);
 198
 199 /* low-level interface reset */
 200 int pcmcia_reset_card(struct pcmcia_socket *skt);
 201
 202 /* CIS config */
 203 int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val);
 204 int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val);
 205
 206 /* device configuration */
 207 int pcmcia_request_io(struct pcmcia_device *p_dev);
 208
 209 int __must_check
 210 __pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
 211                                 irq_handler_t handler);
 212 static inline __must_check __deprecated int
 213 pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
 214                                 irq_handler_t handler)
 215 {
 216         return __pcmcia_request_exclusive_irq(p_dev, handler);
 217 }
 218
 219 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 220                                 irq_handler_t handler);
 221
 222 int pcmcia_enable_device(struct pcmcia_device *p_dev);
 223
 224 int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res,
 225                         unsigned int speed);
 226 int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res);
 227 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
 228                         unsigned int offset);
 229
 230 int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp);
 231 int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev);
 232
 233 void pcmcia_disable_device(struct pcmcia_device *p_dev);
 234
 235 /* IO ports */
 236 #define IO_DATA_PATH_WIDTH      0x18
 237 #define IO_DATA_PATH_WIDTH_8    0x00
 238 #define IO_DATA_PATH_WIDTH_16   0x08
 239 #define IO_DATA_PATH_WIDTH_AUTO 0x10
 240
 241 /* IO memory */
 242 #define WIN_MEMORY_TYPE_CM      0x00 /* default */
 243 #define WIN_MEMORY_TYPE_AM      0x20 /* MAP_ATTRIB */
 244 #define WIN_DATA_WIDTH_8        0x00 /* default */
 245 #define WIN_DATA_WIDTH_16       0x02 /* MAP_16BIT */
 246 #define WIN_ENABLE              0x01 /* MAP_ACTIVE */
 247 #define WIN_USE_WAIT            0x40 /* MAP_USE_WAIT */
 248
 249 #define WIN_FLAGS_MAP           0x63 /* MAP_ATTRIB | MAP_16BIT | MAP_ACTIVE |
 250                                         MAP_USE_WAIT */
 251 #define WIN_FLAGS_REQ           0x1c /* mapping to socket->win[i]:
 252                                         0x04 -> 0
 253                                         0x08 -> 1
 254                                         0x0c -> 2
 255                                         0x10 -> 3 */
 256
 257 /* config_reg{ister}s present for this PCMCIA device */
 258 #define PRESENT_OPTION          0x001
 259 #define PRESENT_STATUS          0x002
 260 #define PRESENT_PIN_REPLACE     0x004
 261 #define PRESENT_COPY            0x008
 262 #define PRESENT_EXT_STATUS      0x010
 263 #define PRESENT_IOBASE_0        0x020
 264 #define PRESENT_IOBASE_1        0x040
 265 #define PRESENT_IOBASE_2        0x080
 266 #define PRESENT_IOBASE_3        0x100
 267 #define PRESENT_IOSIZE          0x200
 268
 269 /* flags to be passed to pcmcia_enable_device() */
 270 #define CONF_ENABLE_IRQ         0x0001
 271 #define CONF_ENABLE_SPKR        0x0002
 272 #define CONF_ENABLE_PULSE_IRQ   0x0004
 273 #define CONF_ENABLE_ESR         0x0008
 274 #define CONF_ENABLE_IOCARD      0x0010 /* auto-enabled if IO resources or IRQ
 275                                         * (CONF_ENABLE_IRQ) in use */
 276 #define CONF_ENABLE_ZVCARD      0x0020
 277
 278 /* flags used by pcmcia_loop_config() autoconfiguration */
 279 #define CONF_AUTO_CHECK_VCC     0x0100 /* check for matching Vcc? */
 280 #define CONF_AUTO_SET_VPP       0x0200 /* set Vpp? */
 281 #define CONF_AUTO_AUDIO         0x0400 /* enable audio line? */
 282 #define CONF_AUTO_SET_IO        0x0800 /* set ->resource[0,1] */
 283 #define CONF_AUTO_SET_IOMEM     0x1000 /* set ->resource[2] */
 284
 285 #endif /* __KERNEL__ */
 286
 287 #endif /* _LINUX_DS_H */