include/pcmcia/ss.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * ss.h
   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  */
  11
  12 #ifndef _LINUX_SS_H
  13 #define _LINUX_SS_H
  14
  15 #include <linux/device.h>
  16 #include <linux/sched.h>        /* task_struct, completion */
  17 #include <linux/mutex.h>
  18
  19 #ifdef CONFIG_CARDBUS
  20 #include <linux/pci.h>
  21 #endif
  22
  23 /* Definitions for card status flags for GetStatus */
  24 #define SS_WRPROT       0x0001
  25 #define SS_CARDLOCK     0x0002
  26 #define SS_EJECTION     0x0004
  27 #define SS_INSERTION    0x0008
  28 #define SS_BATDEAD      0x0010
  29 #define SS_BATWARN      0x0020
  30 #define SS_READY        0x0040
  31 #define SS_DETECT       0x0080
  32 #define SS_POWERON      0x0100
  33 #define SS_GPI          0x0200
  34 #define SS_STSCHG       0x0400
  35 #define SS_CARDBUS      0x0800
  36 #define SS_3VCARD       0x1000
  37 #define SS_XVCARD       0x2000
  38 #define SS_PENDING      0x4000
  39 #define SS_ZVCARD       0x8000
  40
  41 /* InquireSocket capabilities */
  42 #define SS_CAP_PAGE_REGS        0x0001
  43 #define SS_CAP_VIRTUAL_BUS      0x0002
  44 #define SS_CAP_MEM_ALIGN        0x0004
  45 #define SS_CAP_STATIC_MAP       0x0008
  46 #define SS_CAP_PCCARD           0x4000
  47 #define SS_CAP_CARDBUS          0x8000
  48
  49 /* for GetSocket, SetSocket */
  50 typedef struct socket_state_t {
  51         u_int   flags;
  52         u_int   csc_mask;
  53         u_char  Vcc, Vpp;
  54         u_char  io_irq;
  55 } socket_state_t;
  56
  57 extern socket_state_t dead_socket;
  58
  59 /* Socket configuration flags */
  60 #define SS_PWR_AUTO     0x0010
  61 #define SS_IOCARD       0x0020
  62 #define SS_RESET        0x0040
  63 #define SS_DMA_MODE     0x0080
  64 #define SS_SPKR_ENA     0x0100
  65 #define SS_OUTPUT_ENA   0x0200
  66
  67 /* Flags for I/O port and memory windows */
  68 #define MAP_ACTIVE      0x01
  69 #define MAP_16BIT       0x02
  70 #define MAP_AUTOSZ      0x04
  71 #define MAP_0WS         0x08
  72 #define MAP_WRPROT      0x10
  73 #define MAP_ATTRIB      0x20
  74 #define MAP_USE_WAIT    0x40
  75 #define MAP_PREFETCH    0x80
  76
  77 /* Use this just for bridge windows */
  78 #define MAP_IOSPACE     0x20
  79
  80 /* power hook operations */
  81 #define HOOK_POWER_PRE  0x01
  82 #define HOOK_POWER_POST 0x02
  83
  84 typedef struct pccard_io_map {
  85         u_char  map;
  86         u_char  flags;
  87         u_short speed;
  88         phys_addr_t start, stop;
  89 } pccard_io_map;
  90
  91 typedef struct pccard_mem_map {
  92         u_char          map;
  93         u_char          flags;
  94         u_short         speed;
  95         phys_addr_t     static_start;
  96         u_int           card_start;
  97         struct resource *res;
  98 } pccard_mem_map;
  99
 100 typedef struct io_window_t {
 101         u_int                   InUse, Config;
 102         struct resource         *res;
 103 } io_window_t;
 104
 105 /* Maximum number of IO windows per socket */
 106 #define MAX_IO_WIN 2
 107
 108 /* Maximum number of memory windows per socket */
 109 #define MAX_WIN 4
 110
 111
 112 /*
 113  * Socket operations.
 114  */
 115 struct pcmcia_socket;
 116 struct pccard_resource_ops;
 117 struct config_t;
 118 struct pcmcia_callback;
 119 struct user_info_t;
 120
 121 struct pccard_operations {
 122         int (*init)(struct pcmcia_socket *s);
 123         int (*suspend)(struct pcmcia_socket *s);
 124         int (*get_status)(struct pcmcia_socket *s, u_int *value);
 125         int (*set_socket)(struct pcmcia_socket *s, socket_state_t *state);
 126         int (*set_io_map)(struct pcmcia_socket *s, struct pccard_io_map *io);
 127         int (*set_mem_map)(struct pcmcia_socket *s, struct pccard_mem_map *mem);
 128 };
 129
 130 struct pcmcia_socket {
 131         struct module                   *owner;
 132         socket_state_t                  socket;
 133         u_int                           state;
 134         u_int                           suspended_state;        /* state before suspend */
 135         u_short                         functions;
 136         u_short                         lock_count;
 137         pccard_mem_map                  cis_mem;
 138         void __iomem                    *cis_virt;
 139         io_window_t                     io[MAX_IO_WIN];
 140         pccard_mem_map                  win[MAX_WIN];
 141         struct list_head                cis_cache;
 142         size_t                          fake_cis_len;
 143         u8                              *fake_cis;
 144
 145         struct list_head                socket_list;
 146         struct completion               socket_released;
 147
 148         /* deprecated */
 149         unsigned int                    sock;           /* socket number */
 150
 151
 152         /* socket capabilities */
 153         u_int                           features;
 154         u_int                           irq_mask;
 155         u_int                           map_size;
 156         u_int                           io_offset;
 157         u_int                           pci_irq;
 158         struct pci_dev                  *cb_dev;
 159
 160         /* socket setup is done so resources should be able to be allocated.
 161          * Only if set to 1, calls to find_{io,mem}_region are handled, and
 162          * insertio events are actually managed by the PCMCIA layer.*/
 163         u8                              resource_setup_done;
 164
 165         /* socket operations */
 166         struct pccard_operations        *ops;
 167         struct pccard_resource_ops      *resource_ops;
 168         void                            *resource_data;
 169
 170         /* Zoom video behaviour is so chip specific its not worth adding
 171            this to _ops */
 172         void                            (*zoom_video)(struct pcmcia_socket *,
 173                                                       int);
 174
 175         /* so is power hook */
 176         int (*power_hook)(struct pcmcia_socket *sock, int operation);
 177
 178         /* allows tuning the CB bridge before loading driver for the CB card */
 179 #ifdef CONFIG_CARDBUS
 180         void (*tune_bridge)(struct pcmcia_socket *sock, struct pci_bus *bus);
 181 #endif
 182
 183         /* state thread */
 184         struct task_struct              *thread;
 185         struct completion               thread_done;
 186         unsigned int                    thread_events;
 187         unsigned int                    sysfs_events;
 188
 189         /* For the non-trivial interaction between these locks,
 190          * see Documentation/pcmcia/locking.rst */
 191         struct mutex                    skt_mutex;
 192         struct mutex                    ops_mutex;
 193
 194         /* protects thread_events and sysfs_events */
 195         spinlock_t                      thread_lock;
 196
 197         /* pcmcia (16-bit) */
 198         struct pcmcia_callback          *callback;
 199
 200 #if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
 201         /* The following elements refer to 16-bit PCMCIA devices inserted
 202          * into the socket */
 203         struct list_head                devices_list;
 204
 205         /* the number of devices, used only internally and subject to
 206          * incorrectness and change */
 207         u8                              device_count;
 208
 209         /* does the PCMCIA card consist of two pseudo devices? */
 210         u8                              pcmcia_pfc;
 211
 212         /* non-zero if PCMCIA card is present */
 213         atomic_t                        present;
 214
 215         /* IRQ to be used by PCMCIA devices. May not be IRQ 0. */
 216         unsigned int                    pcmcia_irq;
 217
 218 #endif /* CONFIG_PCMCIA */
 219
 220         /* socket device */
 221         struct device                   dev;
 222         /* data internal to the socket driver */
 223         void                            *driver_data;
 224         /* status of the card during resume from a system sleep state */
 225         int                             resume_status;
 226 };
 227
 228
 229 /* socket drivers must define the resource operations type they use. There
 230  * are three options:
 231  * - pccard_static_ops          iomem and ioport areas are assigned statically
 232  * - pccard_iodyn_ops           iomem areas is assigned statically, ioport
 233  *                              areas dynamically
 234  *                              If this option is selected, use
 235  *                              "select PCCARD_IODYN" in Kconfig.
 236  * - pccard_nonstatic_ops       iomem and ioport areas are assigned dynamically.
 237  *                              If this option is selected, use
 238  *                              "select PCCARD_NONSTATIC" in Kconfig.
 239  *
 240  */
 241 extern struct pccard_resource_ops pccard_static_ops;
 242 #if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
 243 extern struct pccard_resource_ops pccard_iodyn_ops;
 244 extern struct pccard_resource_ops pccard_nonstatic_ops;
 245 #else
 246 /* If PCMCIA is not used, but only CARDBUS, these functions are not used
 247  * at all. Therefore, do not use the large (240K!) rsrc_nonstatic module
 248  */
 249 #define pccard_iodyn_ops pccard_static_ops
 250 #define pccard_nonstatic_ops pccard_static_ops
 251 #endif
 252
 253
 254 /* socket drivers use this callback in their IRQ handler */
 255 extern void pcmcia_parse_events(struct pcmcia_socket *socket,
 256                                 unsigned int events);
 257
 258 /* to register and unregister a socket */
 259 extern int pcmcia_register_socket(struct pcmcia_socket *socket);
 260 extern void pcmcia_unregister_socket(struct pcmcia_socket *socket);
 261
 262
 263 #endif /* _LINUX_SS_H */