include/pcmcia/ds.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * ds.h -- 16-bit PCMCIA core support
   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  * (C) 2003 - 2008      Dominik Brodowski
  11  */
  12
  13 #ifndef _LINUX_DS_H
  14 #define _LINUX_DS_H
  15
  16 #ifdef __KERNEL__
  17 #include <linux/mod_devicetable.h>
  18 #endif
  19
  20 #include <pcmcia/device_id.h>
  21
  22 #ifdef __KERNEL__
  23 #include <linux/device.h>
  24 #include <linux/interrupt.h>
  25 #include <pcmcia/ss.h>
  26 #include <linux/atomic.h>
  27
  28
  29 /*
  30  * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus
  31  * a.k.a. PCI drivers
  32  */
  33 struct pcmcia_socket;
  34 struct pcmcia_device;
  35 struct config_t;
  36 struct net_device;
  37
  38 /* dynamic device IDs for PCMCIA device drivers. See
  39  * Documentation/pcmcia/driver.rst for details.
  40 */
  41 struct pcmcia_dynids {
  42         struct mutex            lock;
  43         struct list_head        list;
  44 };
  45
  46 struct pcmcia_driver {
  47         const char              *name;
  48
  49         int (*probe)            (struct pcmcia_device *dev);
  50         void (*remove)          (struct pcmcia_device *dev);
  51
  52         int (*suspend)          (struct pcmcia_device *dev);
  53         int (*resume)           (struct pcmcia_device *dev);
  54
  55         struct module           *owner;
  56         const struct pcmcia_device_id   *id_table;
  57         struct device_driver    drv;
  58         struct pcmcia_dynids    dynids;
  59 };
  60
  61 /* driver registration */
  62 int pcmcia_register_driver(struct pcmcia_driver *driver);
  63 void pcmcia_unregister_driver(struct pcmcia_driver *driver);
  64
  65 /**
  66  * module_pcmcia_driver() - Helper macro for registering a pcmcia driver
  67  * @__pcmcia_driver: pcmcia_driver struct
  68  *
  69  * Helper macro for pcmcia drivers which do not do anything special in module
  70  * init/exit. This eliminates a lot of boilerplate. Each module may only use
  71  * this macro once, and calling it replaces module_init() and module_exit().
  72  */
  73 #define module_pcmcia_driver(__pcmcia_driver) \
  74         module_driver(__pcmcia_driver, pcmcia_register_driver, \
  75                         pcmcia_unregister_driver)
  76
  77 /* for struct resource * array embedded in struct pcmcia_device */
  78 enum {
  79         PCMCIA_IOPORT_0,
  80         PCMCIA_IOPORT_1,
  81         PCMCIA_IOMEM_0,
  82         PCMCIA_IOMEM_1,
  83         PCMCIA_IOMEM_2,
  84         PCMCIA_IOMEM_3,
  85         PCMCIA_NUM_RESOURCES,
  86 };
  87
  88 struct pcmcia_device {
  89         /* the socket and the device_no [for multifunction devices]
  90            uniquely define a pcmcia_device */
  91         struct pcmcia_socket    *socket;
  92
  93         char                    *devname;
  94
  95         u8                      device_no;
  96
  97         /* the hardware "function" device; certain subdevices can
  98          * share one hardware "function" device. */
  99         u8                      func;
 100         struct config_t         *function_config;
 101
 102         struct list_head        socket_device_list;
 103
 104         /* device setup */
 105         unsigned int            irq;
 106         struct resource         *resource[PCMCIA_NUM_RESOURCES];
 107         resource_size_t         card_addr;      /* for the 1st IOMEM resource */
 108         unsigned int            vpp;
 109
 110         unsigned int            config_flags;   /* CONF_ENABLE_ flags below */
 111         unsigned int            config_base;
 112         unsigned int            config_index;
 113         unsigned int            config_regs;    /* PRESENT_ flags below */
 114         unsigned int            io_lines;       /* number of I/O lines */
 115
 116         /* Is the device suspended? */
 117         u16                     suspended:1;
 118
 119         /* Flags whether io, irq, win configurations were
 120          * requested, and whether the configuration is "locked" */
 121         u16                     _irq:1;
 122         u16                     _io:1;
 123         u16                     _win:4;
 124         u16                     _locked:1;
 125
 126         /* Flag whether a "fuzzy" func_id based match is
 127          * allowed. */
 128         u16                     allow_func_id_match:1;
 129
 130         /* information about this device */
 131         u16                     has_manf_id:1;
 132         u16                     has_card_id:1;
 133         u16                     has_func_id:1;
 134
 135         u16                     reserved:4;
 136
 137         u8                      func_id;
 138         u16                     manf_id;
 139         u16                     card_id;
 140
 141         char                    *prod_id[4];
 142
 143         u64                     dma_mask;
 144         struct device           dev;
 145
 146         /* data private to drivers */
 147         void                    *priv;
 148         unsigned int            open;
 149 };
 150
 151 #define to_pcmcia_dev(n) container_of(n, struct pcmcia_device, dev)
 152 #define to_pcmcia_drv(n) container_of(n, struct pcmcia_driver, drv)
 153
 154
 155 /*
 156  * CIS access.
 157  *
 158  * Please use the following functions to access CIS tuples:
 159  * - pcmcia_get_tuple()
 160  * - pcmcia_loop_tuple()
 161  * - pcmcia_get_mac_from_cis()
 162  *
 163  * To parse a tuple_t, pcmcia_parse_tuple() exists. Its interface
 164  * might change in future.
 165  */
 166
 167 /* get the very first CIS entry of type @code. Note that buf is pointer
 168  * to u8 *buf; and that you need to kfree(buf) afterwards. */
 169 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 170                         u8 **buf);
 171
 172 /* loop over CIS entries */
 173 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
 174                       int (*loop_tuple) (struct pcmcia_device *p_dev,
 175                                          tuple_t *tuple,
 176                                          void *priv_data),
 177                       void *priv_data);
 178
 179 /* get the MAC address from CISTPL_FUNCE */
 180 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev,
 181                             struct net_device *dev);
 182
 183
 184 /* parse a tuple_t */
 185 int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse);
 186
 187 /* loop CIS entries for valid configuration */
 188 int pcmcia_loop_config(struct pcmcia_device *p_dev,
 189                        int      (*conf_check)   (struct pcmcia_device *p_dev,
 190                                                  void *priv_data),
 191                        void *priv_data);
 192
 193 /* is the device still there? */
 194 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *p_dev);
 195
 196 /* low-level interface reset */
 197 int pcmcia_reset_card(struct pcmcia_socket *skt);
 198
 199 /* CIS config */
 200 int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val);
 201 int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val);
 202
 203 /* device configuration */
 204 int pcmcia_request_io(struct pcmcia_device *p_dev);
 205
 206 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 207                                 irq_handler_t handler);
 208
 209 int pcmcia_enable_device(struct pcmcia_device *p_dev);
 210
 211 int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res,
 212                         unsigned int speed);
 213 int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res);
 214 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
 215                         unsigned int offset);
 216
 217 int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp);
 218 int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev);
 219
 220 void pcmcia_disable_device(struct pcmcia_device *p_dev);
 221
 222 /* IO ports */
 223 #define IO_DATA_PATH_WIDTH      0x18
 224 #define IO_DATA_PATH_WIDTH_8    0x00
 225 #define IO_DATA_PATH_WIDTH_16   0x08
 226 #define IO_DATA_PATH_WIDTH_AUTO 0x10
 227
 228 /* IO memory */
 229 #define WIN_MEMORY_TYPE_CM      0x00 /* default */
 230 #define WIN_MEMORY_TYPE_AM      0x20 /* MAP_ATTRIB */
 231 #define WIN_DATA_WIDTH_8        0x00 /* default */
 232 #define WIN_DATA_WIDTH_16       0x02 /* MAP_16BIT */
 233 #define WIN_ENABLE              0x01 /* MAP_ACTIVE */
 234 #define WIN_USE_WAIT            0x40 /* MAP_USE_WAIT */
 235
 236 #define WIN_FLAGS_MAP           0x63 /* MAP_ATTRIB | MAP_16BIT | MAP_ACTIVE |
 237                                         MAP_USE_WAIT */
 238 #define WIN_FLAGS_REQ           0x1c /* mapping to socket->win[i]:
 239                                         0x04 -> 0
 240                                         0x08 -> 1
 241                                         0x0c -> 2
 242                                         0x10 -> 3 */
 243
 244 /* config_reg{ister}s present for this PCMCIA device */
 245 #define PRESENT_OPTION          0x001
 246 #define PRESENT_STATUS          0x002
 247 #define PRESENT_PIN_REPLACE     0x004
 248 #define PRESENT_COPY            0x008
 249 #define PRESENT_EXT_STATUS      0x010
 250 #define PRESENT_IOBASE_0        0x020
 251 #define PRESENT_IOBASE_1        0x040
 252 #define PRESENT_IOBASE_2        0x080
 253 #define PRESENT_IOBASE_3        0x100
 254 #define PRESENT_IOSIZE          0x200
 255
 256 /* flags to be passed to pcmcia_enable_device() */
 257 #define CONF_ENABLE_IRQ         0x0001
 258 #define CONF_ENABLE_SPKR        0x0002
 259 #define CONF_ENABLE_PULSE_IRQ   0x0004
 260 #define CONF_ENABLE_ESR         0x0008
 261 #define CONF_ENABLE_IOCARD      0x0010 /* auto-enabled if IO resources or IRQ
 262                                         * (CONF_ENABLE_IRQ) in use */
 263 #define CONF_ENABLE_ZVCARD      0x0020
 264
 265 /* flags used by pcmcia_loop_config() autoconfiguration */
 266 #define CONF_AUTO_CHECK_VCC     0x0100 /* check for matching Vcc? */
 267 #define CONF_AUTO_SET_VPP       0x0200 /* set Vpp? */
 268 #define CONF_AUTO_AUDIO         0x0400 /* enable audio line? */
 269 #define CONF_AUTO_SET_IO        0x0800 /* set ->resource[0,1] */
 270 #define CONF_AUTO_SET_IOMEM     0x1000 /* set ->resource[2] */
 271
 272 #endif /* __KERNEL__ */
 273
 274 #endif /* _LINUX_DS_H */