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Linux/include/pcmcia/ds.h

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  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 */
288 

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