Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pcmcia_ioctl.c -- ioctl interface for cardmgr and cardctl |
| 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 - 2004 Dominik Brodowski |
| 14 | */ |
| 15 | |
| 16 | /* |
| 17 | * This file will go away soon. |
| 18 | */ |
| 19 | |
| 20 | |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 21 | #include <linux/kernel.h> |
Dominik Brodowski | 3b659fb | 2005-06-27 16:28:51 -0700 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/init.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 24 | #include <linux/major.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 25 | #include <linux/errno.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 26 | #include <linux/ioctl.h> |
| 27 | #include <linux/proc_fs.h> |
| 28 | #include <linux/poll.h> |
| 29 | #include <linux/pci.h> |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 30 | #include <linux/seq_file.h> |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 31 | #include <linux/smp_lock.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 32 | #include <linux/workqueue.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 33 | |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 34 | #include <pcmcia/cs_types.h> |
| 35 | #include <pcmcia/cs.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 36 | #include <pcmcia/cistpl.h> |
Dominik Brodowski | 4aeba01 | 2008-06-20 13:24:31 +0200 | [diff] [blame] | 37 | #include <pcmcia/cisreg.h> |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 38 | #include <pcmcia/ds.h> |
| 39 | #include <pcmcia/ss.h> |
| 40 | |
| 41 | #include "cs_internal.h" |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 42 | |
| 43 | static int major_dev = -1; |
| 44 | |
| 45 | |
| 46 | /* Device user information */ |
| 47 | #define MAX_EVENTS 32 |
| 48 | #define USER_MAGIC 0x7ea4 |
| 49 | #define CHECK_USER(u) \ |
| 50 | (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) |
| 51 | |
| 52 | typedef struct user_info_t { |
| 53 | u_int user_magic; |
| 54 | int event_head, event_tail; |
| 55 | event_t event[MAX_EVENTS]; |
| 56 | struct user_info_t *next; |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 57 | struct pcmcia_socket *socket; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 58 | } user_info_t; |
| 59 | |
| 60 | |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 61 | static struct pcmcia_device *get_pcmcia_device(struct pcmcia_socket *s, |
| 62 | unsigned int function) |
| 63 | { |
| 64 | struct pcmcia_device *p_dev = NULL; |
| 65 | unsigned long flags; |
| 66 | |
| 67 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| 68 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
| 69 | if (p_dev->func == function) { |
| 70 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 71 | return pcmcia_get_dev(p_dev); |
| 72 | } |
| 73 | } |
| 74 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 75 | return NULL; |
| 76 | } |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 77 | |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 78 | /* backwards-compatible accessing of driver --- by name! */ |
| 79 | |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 80 | static struct pcmcia_driver *get_pcmcia_driver(dev_info_t *dev_info) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 81 | { |
| 82 | struct device_driver *drv; |
| 83 | struct pcmcia_driver *p_drv; |
| 84 | |
| 85 | drv = driver_find((char *) dev_info, &pcmcia_bus_type); |
| 86 | if (!drv) |
| 87 | return NULL; |
| 88 | |
| 89 | p_drv = container_of(drv, struct pcmcia_driver, drv); |
| 90 | |
| 91 | return (p_drv); |
| 92 | } |
| 93 | |
| 94 | |
| 95 | #ifdef CONFIG_PROC_FS |
| 96 | static struct proc_dir_entry *proc_pccard = NULL; |
| 97 | |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 98 | static int proc_read_drivers_callback(struct device_driver *driver, void *_m) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 99 | { |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 100 | struct seq_file *m = _m; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 101 | struct pcmcia_driver *p_drv = container_of(driver, |
| 102 | struct pcmcia_driver, drv); |
| 103 | |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 104 | seq_printf(m, "%-24.24s 1 %d\n", p_drv->drv.name, |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 105 | #ifdef CONFIG_MODULE_UNLOAD |
| 106 | (p_drv->owner) ? module_refcount(p_drv->owner) : 1 |
| 107 | #else |
| 108 | 1 |
| 109 | #endif |
| 110 | ); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 111 | return 0; |
| 112 | } |
| 113 | |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 114 | static int pccard_drivers_proc_show(struct seq_file *m, void *v) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 115 | { |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 116 | return bus_for_each_drv(&pcmcia_bus_type, NULL, |
| 117 | m, proc_read_drivers_callback); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 118 | } |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 119 | |
| 120 | static int pccard_drivers_proc_open(struct inode *inode, struct file *file) |
| 121 | { |
| 122 | return single_open(file, pccard_drivers_proc_show, NULL); |
| 123 | } |
| 124 | |
| 125 | static const struct file_operations pccard_drivers_proc_fops = { |
| 126 | .owner = THIS_MODULE, |
| 127 | .open = pccard_drivers_proc_open, |
| 128 | .read = seq_read, |
| 129 | .llseek = seq_lseek, |
| 130 | .release = single_release, |
| 131 | }; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 132 | #endif |
| 133 | |
Dominik Brodowski | c502380 | 2008-06-19 19:02:52 +0200 | [diff] [blame] | 134 | |
| 135 | #ifdef CONFIG_PCMCIA_PROBE |
| 136 | |
| 137 | static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) |
| 138 | { |
| 139 | int irq; |
| 140 | u32 mask; |
| 141 | |
| 142 | irq = adj->resource.irq.IRQ; |
| 143 | if ((irq < 0) || (irq > 15)) |
Dominik Brodowski | 69ba443 | 2008-08-03 12:10:53 +0200 | [diff] [blame] | 144 | return -EINVAL; |
Dominik Brodowski | c502380 | 2008-06-19 19:02:52 +0200 | [diff] [blame] | 145 | |
| 146 | if (adj->Action != REMOVE_MANAGED_RESOURCE) |
| 147 | return 0; |
| 148 | |
| 149 | mask = 1 << irq; |
| 150 | |
| 151 | if (!(s->irq_mask & mask)) |
| 152 | return 0; |
| 153 | |
| 154 | s->irq_mask &= ~mask; |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | #else |
| 160 | |
| 161 | static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) { |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 162 | return 0; |
Dominik Brodowski | c502380 | 2008-06-19 19:02:52 +0200 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | #endif |
| 166 | |
| 167 | static int pcmcia_adjust_resource_info(adjust_t *adj) |
| 168 | { |
| 169 | struct pcmcia_socket *s; |
Dominik Brodowski | de6405e | 2008-08-03 10:47:59 +0200 | [diff] [blame] | 170 | int ret = -ENOSYS; |
Dominik Brodowski | c502380 | 2008-06-19 19:02:52 +0200 | [diff] [blame] | 171 | unsigned long flags; |
| 172 | |
| 173 | down_read(&pcmcia_socket_list_rwsem); |
| 174 | list_for_each_entry(s, &pcmcia_socket_list, socket_list) { |
| 175 | |
| 176 | if (adj->Resource == RES_IRQ) |
| 177 | ret = adjust_irq(s, adj); |
| 178 | |
| 179 | else if (s->resource_ops->add_io) { |
| 180 | unsigned long begin, end; |
| 181 | |
| 182 | /* you can't use the old interface if the new |
| 183 | * one was used before */ |
| 184 | spin_lock_irqsave(&s->lock, flags); |
| 185 | if ((s->resource_setup_new) && |
| 186 | !(s->resource_setup_old)) { |
| 187 | spin_unlock_irqrestore(&s->lock, flags); |
| 188 | continue; |
| 189 | } else if (!(s->resource_setup_old)) |
| 190 | s->resource_setup_old = 1; |
| 191 | spin_unlock_irqrestore(&s->lock, flags); |
| 192 | |
| 193 | switch (adj->Resource) { |
| 194 | case RES_MEMORY_RANGE: |
| 195 | begin = adj->resource.memory.Base; |
| 196 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; |
| 197 | if (s->resource_ops->add_mem) |
| 198 | ret =s->resource_ops->add_mem(s, adj->Action, begin, end); |
| 199 | case RES_IO_RANGE: |
| 200 | begin = adj->resource.io.BasePort; |
| 201 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; |
| 202 | if (s->resource_ops->add_io) |
| 203 | ret = s->resource_ops->add_io(s, adj->Action, begin, end); |
| 204 | } |
| 205 | if (!ret) { |
| 206 | /* as there's no way we know this is the |
| 207 | * last call to adjust_resource_info, we |
| 208 | * always need to assume this is the latest |
| 209 | * one... */ |
| 210 | spin_lock_irqsave(&s->lock, flags); |
| 211 | s->resource_setup_done = 1; |
| 212 | spin_unlock_irqrestore(&s->lock, flags); |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | up_read(&pcmcia_socket_list_rwsem); |
| 217 | |
| 218 | return (ret); |
| 219 | } |
| 220 | |
Dominik Brodowski | 4aeba01 | 2008-06-20 13:24:31 +0200 | [diff] [blame] | 221 | /** pccard_get_status |
| 222 | * |
| 223 | * Get the current socket state bits. We don't support the latched |
| 224 | * SocketState yet: I haven't seen any point for it. |
| 225 | */ |
| 226 | |
| 227 | static int pccard_get_status(struct pcmcia_socket *s, |
| 228 | struct pcmcia_device *p_dev, |
| 229 | cs_status_t *status) |
| 230 | { |
| 231 | config_t *c; |
| 232 | int val; |
| 233 | |
| 234 | s->ops->get_status(s, &val); |
| 235 | status->CardState = status->SocketState = 0; |
| 236 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; |
| 237 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; |
| 238 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; |
| 239 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; |
| 240 | if (s->state & SOCKET_SUSPEND) |
| 241 | status->CardState |= CS_EVENT_PM_SUSPEND; |
| 242 | if (!(s->state & SOCKET_PRESENT)) |
Dominik Brodowski | 3939c1ef | 2008-08-03 11:10:56 +0200 | [diff] [blame] | 243 | return -ENODEV; |
Dominik Brodowski | 4aeba01 | 2008-06-20 13:24:31 +0200 | [diff] [blame] | 244 | |
| 245 | c = (p_dev) ? p_dev->function_config : NULL; |
| 246 | |
| 247 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && |
| 248 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { |
| 249 | u_char reg; |
| 250 | if (c->CardValues & PRESENT_PIN_REPLACE) { |
| 251 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); |
| 252 | status->CardState |= |
| 253 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; |
| 254 | status->CardState |= |
| 255 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; |
| 256 | status->CardState |= |
| 257 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; |
| 258 | status->CardState |= |
| 259 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; |
| 260 | } else { |
| 261 | /* No PRR? Then assume we're always ready */ |
| 262 | status->CardState |= CS_EVENT_READY_CHANGE; |
| 263 | } |
| 264 | if (c->CardValues & PRESENT_EXT_STATUS) { |
| 265 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); |
| 266 | status->CardState |= |
| 267 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; |
| 268 | } |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 269 | return 0; |
Dominik Brodowski | 4aeba01 | 2008-06-20 13:24:31 +0200 | [diff] [blame] | 270 | } |
| 271 | status->CardState |= |
| 272 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; |
| 273 | status->CardState |= |
| 274 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; |
| 275 | status->CardState |= |
| 276 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; |
| 277 | status->CardState |= |
| 278 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 279 | return 0; |
Dominik Brodowski | 4aeba01 | 2008-06-20 13:24:31 +0200 | [diff] [blame] | 280 | } /* pccard_get_status */ |
Dominik Brodowski | c502380 | 2008-06-19 19:02:52 +0200 | [diff] [blame] | 281 | |
Roel Kluin | a077932 | 2008-12-09 22:12:50 +0100 | [diff] [blame] | 282 | static int pccard_get_configuration_info(struct pcmcia_socket *s, |
Dominik Brodowski | 64f3464 | 2008-08-02 17:00:46 +0200 | [diff] [blame] | 283 | struct pcmcia_device *p_dev, |
| 284 | config_info_t *config) |
| 285 | { |
| 286 | config_t *c; |
| 287 | |
| 288 | if (!(s->state & SOCKET_PRESENT)) |
Dominik Brodowski | 3939c1ef | 2008-08-03 11:10:56 +0200 | [diff] [blame] | 289 | return -ENODEV; |
Dominik Brodowski | 64f3464 | 2008-08-02 17:00:46 +0200 | [diff] [blame] | 290 | |
| 291 | |
| 292 | #ifdef CONFIG_CARDBUS |
| 293 | if (s->state & SOCKET_CARDBUS) { |
| 294 | memset(config, 0, sizeof(config_info_t)); |
| 295 | config->Vcc = s->socket.Vcc; |
| 296 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; |
| 297 | config->Option = s->cb_dev->subordinate->number; |
| 298 | if (s->state & SOCKET_CARDBUS_CONFIG) { |
| 299 | config->Attributes = CONF_VALID_CLIENT; |
| 300 | config->IntType = INT_CARDBUS; |
| 301 | config->AssignedIRQ = s->irq.AssignedIRQ; |
| 302 | if (config->AssignedIRQ) |
| 303 | config->Attributes |= CONF_ENABLE_IRQ; |
| 304 | if (s->io[0].res) { |
| 305 | config->BasePort1 = s->io[0].res->start; |
| 306 | config->NumPorts1 = s->io[0].res->end - |
| 307 | config->BasePort1 + 1; |
| 308 | } |
| 309 | } |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 310 | return 0; |
Dominik Brodowski | 64f3464 | 2008-08-02 17:00:46 +0200 | [diff] [blame] | 311 | } |
| 312 | #endif |
| 313 | |
| 314 | if (p_dev) { |
| 315 | c = p_dev->function_config; |
| 316 | config->Function = p_dev->func; |
| 317 | } else { |
| 318 | c = NULL; |
| 319 | config->Function = 0; |
| 320 | } |
| 321 | |
| 322 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { |
| 323 | config->Attributes = 0; |
| 324 | config->Vcc = s->socket.Vcc; |
| 325 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 326 | return 0; |
Dominik Brodowski | 64f3464 | 2008-08-02 17:00:46 +0200 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; |
| 330 | config->Vcc = s->socket.Vcc; |
| 331 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; |
| 332 | config->IntType = c->IntType; |
| 333 | config->ConfigBase = c->ConfigBase; |
| 334 | config->Status = c->Status; |
| 335 | config->Pin = c->Pin; |
| 336 | config->Copy = c->Copy; |
| 337 | config->Option = c->Option; |
| 338 | config->ExtStatus = c->ExtStatus; |
| 339 | config->Present = config->CardValues = c->CardValues; |
| 340 | config->IRQAttributes = c->irq.Attributes; |
| 341 | config->AssignedIRQ = s->irq.AssignedIRQ; |
| 342 | config->BasePort1 = c->io.BasePort1; |
| 343 | config->NumPorts1 = c->io.NumPorts1; |
| 344 | config->Attributes1 = c->io.Attributes1; |
| 345 | config->BasePort2 = c->io.BasePort2; |
| 346 | config->NumPorts2 = c->io.NumPorts2; |
| 347 | config->Attributes2 = c->io.Attributes2; |
| 348 | config->IOAddrLines = c->io.IOAddrLines; |
| 349 | |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 350 | return 0; |
Dominik Brodowski | 64f3464 | 2008-08-02 17:00:46 +0200 | [diff] [blame] | 351 | } /* pccard_get_configuration_info */ |
| 352 | |
| 353 | |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 354 | /*====================================================================== |
| 355 | |
| 356 | These manage a ring buffer of events pending for one user process |
| 357 | |
| 358 | ======================================================================*/ |
| 359 | |
| 360 | |
| 361 | static int queue_empty(user_info_t *user) |
| 362 | { |
| 363 | return (user->event_head == user->event_tail); |
| 364 | } |
| 365 | |
| 366 | static event_t get_queued_event(user_info_t *user) |
| 367 | { |
| 368 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; |
| 369 | return user->event[user->event_tail]; |
| 370 | } |
| 371 | |
| 372 | static void queue_event(user_info_t *user, event_t event) |
| 373 | { |
| 374 | user->event_head = (user->event_head+1) % MAX_EVENTS; |
| 375 | if (user->event_head == user->event_tail) |
| 376 | user->event_tail = (user->event_tail+1) % MAX_EVENTS; |
| 377 | user->event[user->event_head] = event; |
| 378 | } |
| 379 | |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 380 | void handle_event(struct pcmcia_socket *s, event_t event) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 381 | { |
| 382 | user_info_t *user; |
| 383 | for (user = s->user; user; user = user->next) |
| 384 | queue_event(user, event); |
| 385 | wake_up_interruptible(&s->queue); |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /*====================================================================== |
| 390 | |
| 391 | bind_request() and bind_device() are merged by now. Register_client() |
| 392 | is called right at the end of bind_request(), during the driver's |
| 393 | ->attach() call. Individual descriptions: |
| 394 | |
| 395 | bind_request() connects a socket to a particular client driver. |
| 396 | It looks up the specified device ID in the list of registered |
| 397 | drivers, binds it to the socket, and tries to create an instance |
| 398 | of the device. unbind_request() deletes a driver instance. |
| 399 | |
| 400 | Bind_device() associates a device driver with a particular socket. |
| 401 | It is normally called by Driver Services after it has identified |
| 402 | a newly inserted card. An instance of that driver will then be |
| 403 | eligible to register as a client of this socket. |
| 404 | |
| 405 | Register_client() uses the dev_info_t handle to match the |
| 406 | caller with a socket. The driver must have already been bound |
| 407 | to a socket with bind_device() -- in fact, bind_device() |
| 408 | allocates the client structure that will be used. |
| 409 | |
| 410 | ======================================================================*/ |
| 411 | |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 412 | static int bind_request(struct pcmcia_socket *s, bind_info_t *bind_info) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 413 | { |
| 414 | struct pcmcia_driver *p_drv; |
| 415 | struct pcmcia_device *p_dev; |
| 416 | int ret = 0; |
| 417 | unsigned long flags; |
| 418 | |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 419 | s = pcmcia_get_socket(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 420 | if (!s) |
| 421 | return -EINVAL; |
| 422 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 423 | pr_debug("bind_request(%d, '%s')\n", s->sock, |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 424 | (char *)bind_info->dev_info); |
| 425 | |
| 426 | p_drv = get_pcmcia_driver(&bind_info->dev_info); |
| 427 | if (!p_drv) { |
| 428 | ret = -EINVAL; |
| 429 | goto err_put; |
| 430 | } |
| 431 | |
| 432 | if (!try_module_get(p_drv->owner)) { |
| 433 | ret = -EINVAL; |
| 434 | goto err_put_driver; |
| 435 | } |
| 436 | |
| 437 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| 438 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
| 439 | if (p_dev->func == bind_info->function) { |
| 440 | if ((p_dev->dev.driver == &p_drv->drv)) { |
| 441 | if (p_dev->cardmgr) { |
| 442 | /* if there's already a device |
| 443 | * registered, and it was registered |
| 444 | * by userspace before, we need to |
| 445 | * return the "instance". */ |
| 446 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 447 | bind_info->instance = p_dev; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 448 | ret = -EBUSY; |
| 449 | goto err_put_module; |
| 450 | } else { |
| 451 | /* the correct driver managed to bind |
| 452 | * itself magically to the correct |
| 453 | * device. */ |
| 454 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 455 | p_dev->cardmgr = p_drv; |
| 456 | ret = 0; |
| 457 | goto err_put_module; |
| 458 | } |
| 459 | } else if (!p_dev->dev.driver) { |
| 460 | /* there's already a device available where |
| 461 | * no device has been bound to yet. So we don't |
| 462 | * need to register a device! */ |
| 463 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 464 | goto rescan; |
| 465 | } |
| 466 | } |
| 467 | } |
| 468 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 469 | |
| 470 | p_dev = pcmcia_device_add(s, bind_info->function); |
| 471 | if (!p_dev) { |
| 472 | ret = -EIO; |
| 473 | goto err_put_module; |
| 474 | } |
| 475 | |
| 476 | rescan: |
| 477 | p_dev->cardmgr = p_drv; |
| 478 | |
| 479 | /* if a driver is already running, we can abort */ |
| 480 | if (p_dev->dev.driver) |
| 481 | goto err_put_module; |
| 482 | |
| 483 | /* |
| 484 | * Prevent this racing with a card insertion. |
| 485 | */ |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 486 | mutex_lock(&s->skt_mutex); |
Jeff Garzik | 4deb7c1 | 2006-10-20 14:44:23 -0700 | [diff] [blame] | 487 | ret = bus_rescan_devices(&pcmcia_bus_type); |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 488 | mutex_unlock(&s->skt_mutex); |
Jeff Garzik | 4deb7c1 | 2006-10-20 14:44:23 -0700 | [diff] [blame] | 489 | if (ret) |
| 490 | goto err_put_module; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 491 | |
| 492 | /* check whether the driver indeed matched. I don't care if this |
| 493 | * is racy or not, because it can only happen on cardmgr access |
| 494 | * paths... |
| 495 | */ |
| 496 | if (!(p_dev->dev.driver == &p_drv->drv)) |
| 497 | p_dev->cardmgr = NULL; |
| 498 | |
| 499 | err_put_module: |
| 500 | module_put(p_drv->owner); |
| 501 | err_put_driver: |
| 502 | put_driver(&p_drv->drv); |
| 503 | err_put: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 504 | pcmcia_put_socket(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 505 | |
| 506 | return (ret); |
| 507 | } /* bind_request */ |
| 508 | |
Dominik Brodowski | 33519dd | 2005-06-27 16:28:53 -0700 | [diff] [blame] | 509 | #ifdef CONFIG_CARDBUS |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 510 | |
Dominik Brodowski | 33519dd | 2005-06-27 16:28:53 -0700 | [diff] [blame] | 511 | static struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) |
| 512 | { |
| 513 | if (!s || !(s->state & SOCKET_CARDBUS)) |
| 514 | return NULL; |
| 515 | |
| 516 | return s->cb_dev->subordinate; |
| 517 | } |
| 518 | #endif |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 519 | |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 520 | static int get_device_info(struct pcmcia_socket *s, bind_info_t *bind_info, int first) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 521 | { |
| 522 | dev_node_t *node; |
| 523 | struct pcmcia_device *p_dev; |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 524 | struct pcmcia_driver *p_drv; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 525 | unsigned long flags; |
| 526 | int ret = 0; |
| 527 | |
| 528 | #ifdef CONFIG_CARDBUS |
| 529 | /* |
| 530 | * Some unbelievably ugly code to associate the PCI cardbus |
| 531 | * device and its driver with the PCMCIA "bind" information. |
| 532 | */ |
| 533 | { |
| 534 | struct pci_bus *bus; |
| 535 | |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 536 | bus = pcmcia_lookup_bus(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 537 | if (bus) { |
| 538 | struct list_head *list; |
| 539 | struct pci_dev *dev = NULL; |
| 540 | |
| 541 | list = bus->devices.next; |
| 542 | while (list != &bus->devices) { |
| 543 | struct pci_dev *pdev = pci_dev_b(list); |
| 544 | list = list->next; |
| 545 | |
| 546 | if (first) { |
| 547 | dev = pdev; |
| 548 | break; |
| 549 | } |
| 550 | |
| 551 | /* Try to handle "next" here some way? */ |
| 552 | } |
| 553 | if (dev && dev->driver) { |
| 554 | strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); |
| 555 | bind_info->major = 0; |
| 556 | bind_info->minor = 0; |
| 557 | bind_info->next = NULL; |
| 558 | return 0; |
| 559 | } |
| 560 | } |
| 561 | } |
| 562 | #endif |
| 563 | |
| 564 | spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| 565 | list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { |
| 566 | if (p_dev->func == bind_info->function) { |
| 567 | p_dev = pcmcia_get_dev(p_dev); |
| 568 | if (!p_dev) |
| 569 | continue; |
| 570 | goto found; |
| 571 | } |
| 572 | } |
| 573 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 574 | return -ENODEV; |
| 575 | |
| 576 | found: |
| 577 | spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| 578 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 579 | p_drv = to_pcmcia_drv(p_dev->dev.driver); |
| 580 | if (p_drv && !p_dev->_locked) { |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 581 | ret = -EAGAIN; |
| 582 | goto err_put; |
| 583 | } |
| 584 | |
| 585 | if (first) |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 586 | node = p_dev->dev_node; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 587 | else |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 588 | for (node = p_dev->dev_node; node; node = node->next) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 589 | if (node == bind_info->next) |
| 590 | break; |
| 591 | if (!node) { |
| 592 | ret = -ENODEV; |
| 593 | goto err_put; |
| 594 | } |
| 595 | |
| 596 | strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); |
| 597 | bind_info->major = node->major; |
| 598 | bind_info->minor = node->minor; |
| 599 | bind_info->next = node->next; |
| 600 | |
| 601 | err_put: |
| 602 | pcmcia_put_dev(p_dev); |
| 603 | return (ret); |
| 604 | } /* get_device_info */ |
| 605 | |
| 606 | |
| 607 | static int ds_open(struct inode *inode, struct file *file) |
| 608 | { |
| 609 | socket_t i = iminor(inode); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 610 | struct pcmcia_socket *s; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 611 | user_info_t *user; |
Dominik Brodowski | c352ec8 | 2005-09-13 01:25:03 -0700 | [diff] [blame] | 612 | static int warning_printed = 0; |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 613 | int ret = 0; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 614 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 615 | pr_debug("ds_open(socket %d)\n", i); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 616 | |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 617 | lock_kernel(); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 618 | s = pcmcia_get_socket_by_nr(i); |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 619 | if (!s) { |
| 620 | ret = -ENODEV; |
| 621 | goto out; |
| 622 | } |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 623 | s = pcmcia_get_socket(s); |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 624 | if (!s) { |
| 625 | ret = -ENODEV; |
| 626 | goto out; |
| 627 | } |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 628 | |
| 629 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 630 | if (s->pcmcia_state.busy) { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 631 | pcmcia_put_socket(s); |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 632 | ret = -EBUSY; |
| 633 | goto out; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 634 | } |
| 635 | else |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 636 | s->pcmcia_state.busy = 1; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | user = kmalloc(sizeof(user_info_t), GFP_KERNEL); |
| 640 | if (!user) { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 641 | pcmcia_put_socket(s); |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 642 | ret = -ENOMEM; |
| 643 | goto out; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 644 | } |
| 645 | user->event_tail = user->event_head = 0; |
| 646 | user->next = s->user; |
| 647 | user->user_magic = USER_MAGIC; |
| 648 | user->socket = s; |
| 649 | s->user = user; |
| 650 | file->private_data = user; |
| 651 | |
Dominik Brodowski | c352ec8 | 2005-09-13 01:25:03 -0700 | [diff] [blame] | 652 | if (!warning_printed) { |
| 653 | printk(KERN_INFO "pcmcia: Detected deprecated PCMCIA ioctl " |
Benjamin Herrenschmidt | 73d5858 | 2006-05-15 09:43:53 -0700 | [diff] [blame] | 654 | "usage from process: %s.\n", current->comm); |
Dominik Brodowski | c352ec8 | 2005-09-13 01:25:03 -0700 | [diff] [blame] | 655 | printk(KERN_INFO "pcmcia: This interface will soon be removed from " |
| 656 | "the kernel; please expect breakage unless you upgrade " |
| 657 | "to new tools.\n"); |
| 658 | printk(KERN_INFO "pcmcia: see http://www.kernel.org/pub/linux/" |
| 659 | "utils/kernel/pcmcia/pcmcia.html for details.\n"); |
| 660 | warning_printed = 1; |
| 661 | } |
| 662 | |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 663 | if (s->pcmcia_state.present) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 664 | queue_event(user, CS_EVENT_CARD_INSERTION); |
Jonathan Corbet | 0bec0bb | 2008-05-15 09:25:03 -0600 | [diff] [blame] | 665 | out: |
| 666 | unlock_kernel(); |
| 667 | return ret; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 668 | } /* ds_open */ |
| 669 | |
| 670 | /*====================================================================*/ |
| 671 | |
| 672 | static int ds_release(struct inode *inode, struct file *file) |
| 673 | { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 674 | struct pcmcia_socket *s; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 675 | user_info_t *user, **link; |
| 676 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 677 | pr_debug("ds_release(socket %d)\n", iminor(inode)); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 678 | |
| 679 | user = file->private_data; |
| 680 | if (CHECK_USER(user)) |
| 681 | goto out; |
| 682 | |
| 683 | s = user->socket; |
| 684 | |
| 685 | /* Unlink user data structure */ |
| 686 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 687 | s->pcmcia_state.busy = 0; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 688 | } |
| 689 | file->private_data = NULL; |
| 690 | for (link = &s->user; *link; link = &(*link)->next) |
| 691 | if (*link == user) break; |
| 692 | if (link == NULL) |
| 693 | goto out; |
| 694 | *link = user->next; |
| 695 | user->user_magic = 0; |
| 696 | kfree(user); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 697 | pcmcia_put_socket(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 698 | out: |
| 699 | return 0; |
| 700 | } /* ds_release */ |
| 701 | |
| 702 | /*====================================================================*/ |
| 703 | |
| 704 | static ssize_t ds_read(struct file *file, char __user *buf, |
| 705 | size_t count, loff_t *ppos) |
| 706 | { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 707 | struct pcmcia_socket *s; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 708 | user_info_t *user; |
| 709 | int ret; |
| 710 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 711 | pr_debug("ds_read(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 712 | |
| 713 | if (count < 4) |
| 714 | return -EINVAL; |
| 715 | |
| 716 | user = file->private_data; |
| 717 | if (CHECK_USER(user)) |
| 718 | return -EIO; |
| 719 | |
| 720 | s = user->socket; |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 721 | if (s->pcmcia_state.dead) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 722 | return -EIO; |
| 723 | |
| 724 | ret = wait_event_interruptible(s->queue, !queue_empty(user)); |
| 725 | if (ret == 0) |
| 726 | ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; |
| 727 | |
| 728 | return ret; |
| 729 | } /* ds_read */ |
| 730 | |
| 731 | /*====================================================================*/ |
| 732 | |
| 733 | static ssize_t ds_write(struct file *file, const char __user *buf, |
| 734 | size_t count, loff_t *ppos) |
| 735 | { |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 736 | pr_debug("ds_write(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 737 | |
| 738 | if (count != 4) |
| 739 | return -EINVAL; |
| 740 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) |
| 741 | return -EBADF; |
| 742 | |
| 743 | return -EIO; |
| 744 | } /* ds_write */ |
| 745 | |
| 746 | /*====================================================================*/ |
| 747 | |
| 748 | /* No kernel lock - fine */ |
| 749 | static u_int ds_poll(struct file *file, poll_table *wait) |
| 750 | { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 751 | struct pcmcia_socket *s; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 752 | user_info_t *user; |
| 753 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 754 | pr_debug("ds_poll(socket %d)\n", iminor(file->f_path.dentry->d_inode)); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 755 | |
| 756 | user = file->private_data; |
| 757 | if (CHECK_USER(user)) |
| 758 | return POLLERR; |
| 759 | s = user->socket; |
| 760 | /* |
| 761 | * We don't check for a dead socket here since that |
| 762 | * will send cardmgr into an endless spin. |
| 763 | */ |
| 764 | poll_wait(file, &s->queue, wait); |
| 765 | if (!queue_empty(user)) |
| 766 | return POLLIN | POLLRDNORM; |
| 767 | return 0; |
| 768 | } /* ds_poll */ |
| 769 | |
| 770 | /*====================================================================*/ |
| 771 | |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 772 | static int ds_ioctl(struct inode * inode, struct file * file, |
| 773 | u_int cmd, u_long arg) |
| 774 | { |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 775 | struct pcmcia_socket *s; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 776 | void __user *uarg = (char __user *)arg; |
| 777 | u_int size; |
| 778 | int ret, err; |
| 779 | ds_ioctl_arg_t *buf; |
| 780 | user_info_t *user; |
| 781 | |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 782 | pr_debug("ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 783 | |
| 784 | user = file->private_data; |
| 785 | if (CHECK_USER(user)) |
| 786 | return -EIO; |
| 787 | |
| 788 | s = user->socket; |
Dominik Brodowski | b5e4391 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 789 | if (s->pcmcia_state.dead) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 790 | return -EIO; |
| 791 | |
| 792 | size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; |
| 793 | if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; |
| 794 | |
| 795 | /* Permission check */ |
| 796 | if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) |
| 797 | return -EPERM; |
| 798 | |
| 799 | if (cmd & IOC_IN) { |
| 800 | if (!access_ok(VERIFY_READ, uarg, size)) { |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 801 | pr_debug("ds_ioctl(): verify_read = %d\n", -EFAULT); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 802 | return -EFAULT; |
| 803 | } |
| 804 | } |
| 805 | if (cmd & IOC_OUT) { |
| 806 | if (!access_ok(VERIFY_WRITE, uarg, size)) { |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 807 | pr_debug("ds_ioctl(): verify_write = %d\n", -EFAULT); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 808 | return -EFAULT; |
| 809 | } |
| 810 | } |
| 811 | buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); |
| 812 | if (!buf) |
| 813 | return -ENOMEM; |
| 814 | |
| 815 | err = ret = 0; |
| 816 | |
Dominik Brodowski | 9374074 | 2006-11-19 11:21:27 -0500 | [diff] [blame] | 817 | if (cmd & IOC_IN) { |
| 818 | if (__copy_from_user((char *)buf, uarg, size)) { |
| 819 | err = -EFAULT; |
| 820 | goto free_out; |
| 821 | } |
| 822 | } |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 823 | |
| 824 | switch (cmd) { |
| 825 | case DS_ADJUST_RESOURCE_INFO: |
| 826 | ret = pcmcia_adjust_resource_info(&buf->adjust); |
| 827 | break; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 828 | case DS_GET_CONFIGURATION_INFO: |
| 829 | if (buf->config.Function && |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 830 | (buf->config.Function >= s->functions)) |
Dominik Brodowski | 926c540 | 2008-08-03 12:15:11 +0200 | [diff] [blame] | 831 | ret = -EINVAL; |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 832 | else { |
| 833 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->config.Function); |
Daniel Ritz | f47ad21 | 2006-07-30 03:03:47 -0700 | [diff] [blame] | 834 | ret = pccard_get_configuration_info(s, p_dev, &buf->config); |
| 835 | pcmcia_put_dev(p_dev); |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 836 | } |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 837 | break; |
| 838 | case DS_GET_FIRST_TUPLE: |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 839 | mutex_lock(&s->skt_mutex); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 840 | pcmcia_validate_mem(s); |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 841 | mutex_unlock(&s->skt_mutex); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 842 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, &buf->tuple); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 843 | break; |
| 844 | case DS_GET_NEXT_TUPLE: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 845 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, &buf->tuple); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 846 | break; |
| 847 | case DS_GET_TUPLE_DATA: |
| 848 | buf->tuple.TupleData = buf->tuple_parse.data; |
| 849 | buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 850 | ret = pccard_get_tuple_data(s, &buf->tuple); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 851 | break; |
| 852 | case DS_PARSE_TUPLE: |
| 853 | buf->tuple.TupleData = buf->tuple_parse.data; |
Dominik Brodowski | 2f3061e | 2008-08-31 15:50:33 +0200 | [diff] [blame] | 854 | ret = pcmcia_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 855 | break; |
| 856 | case DS_RESET_CARD: |
Dominik Brodowski | 994917f | 2008-08-31 15:20:26 +0200 | [diff] [blame] | 857 | ret = pcmcia_reset_card(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 858 | break; |
| 859 | case DS_GET_STATUS: |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 860 | if (buf->status.Function && |
| 861 | (buf->status.Function >= s->functions)) |
Dominik Brodowski | 926c540 | 2008-08-03 12:15:11 +0200 | [diff] [blame] | 862 | ret = -EINVAL; |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 863 | else { |
| 864 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->status.Function); |
Daniel Ritz | f47ad21 | 2006-07-30 03:03:47 -0700 | [diff] [blame] | 865 | ret = pccard_get_status(s, p_dev, &buf->status); |
| 866 | pcmcia_put_dev(p_dev); |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 867 | } |
| 868 | break; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 869 | case DS_VALIDATE_CIS: |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 870 | mutex_lock(&s->skt_mutex); |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 871 | pcmcia_validate_mem(s); |
Dominik Brodowski | 7fe908d | 2006-01-10 21:20:36 +0100 | [diff] [blame] | 872 | mutex_unlock(&s->skt_mutex); |
Dominik Brodowski | 84897fc | 2009-10-18 23:51:09 +0200 | [diff] [blame] | 873 | ret = pccard_validate_cis(s, &buf->cisinfo.Chains); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 874 | break; |
| 875 | case DS_SUSPEND_CARD: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 876 | ret = pcmcia_suspend_card(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 877 | break; |
| 878 | case DS_RESUME_CARD: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 879 | ret = pcmcia_resume_card(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 880 | break; |
| 881 | case DS_EJECT_CARD: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 882 | err = pcmcia_eject_card(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 883 | break; |
| 884 | case DS_INSERT_CARD: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 885 | err = pcmcia_insert_card(s); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 886 | break; |
| 887 | case DS_ACCESS_CONFIGURATION_REGISTER: |
| 888 | if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { |
| 889 | err = -EPERM; |
| 890 | goto free_out; |
| 891 | } |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 892 | |
Dominik Brodowski | 926c540 | 2008-08-03 12:15:11 +0200 | [diff] [blame] | 893 | ret = -EINVAL; |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 894 | |
| 895 | if (!(buf->conf_reg.Function && |
| 896 | (buf->conf_reg.Function >= s->functions))) { |
| 897 | struct pcmcia_device *p_dev = get_pcmcia_device(s, buf->conf_reg.Function); |
Benjamin Herrenschmidt | 73d5858 | 2006-05-15 09:43:53 -0700 | [diff] [blame] | 898 | if (p_dev) { |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 899 | ret = pcmcia_access_configuration_register(p_dev, &buf->conf_reg); |
Benjamin Herrenschmidt | 73d5858 | 2006-05-15 09:43:53 -0700 | [diff] [blame] | 900 | pcmcia_put_dev(p_dev); |
| 901 | } |
Dominik Brodowski | 855cdf1 | 2006-01-10 20:48:59 +0100 | [diff] [blame] | 902 | } |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 903 | break; |
| 904 | case DS_GET_FIRST_REGION: |
| 905 | case DS_GET_NEXT_REGION: |
| 906 | case DS_BIND_MTD: |
| 907 | if (!capable(CAP_SYS_ADMIN)) { |
| 908 | err = -EPERM; |
| 909 | goto free_out; |
| 910 | } else { |
Minchan Kim | a9c5695 | 2009-06-16 15:33:44 -0700 | [diff] [blame] | 911 | printk_once(KERN_WARNING |
| 912 | "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); |
| 913 | printk_once(KERN_WARNING "MTD handling any more.\n"); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 914 | } |
| 915 | err = -EINVAL; |
| 916 | goto free_out; |
| 917 | break; |
| 918 | case DS_GET_FIRST_WINDOW: |
Magnus Damm | 0bdf9b3 | 2006-12-13 19:46:53 +0900 | [diff] [blame^] | 919 | ret = pcmcia_get_window(s, &buf->win_info.handle, 1, |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 920 | &buf->win_info.window); |
| 921 | break; |
| 922 | case DS_GET_NEXT_WINDOW: |
Dominik Brodowski | dc10949 | 2005-06-27 16:28:50 -0700 | [diff] [blame] | 923 | ret = pcmcia_get_window(s, &buf->win_info.handle, |
Magnus Damm | 0bdf9b3 | 2006-12-13 19:46:53 +0900 | [diff] [blame^] | 924 | buf->win_info.handle + 1, &buf->win_info.window); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 925 | break; |
| 926 | case DS_GET_MEM_PAGE: |
Magnus Damm | 16456eb | 2006-12-13 19:46:48 +0900 | [diff] [blame] | 927 | ret = pcmcia_get_mem_page(s, buf->win_info.handle, |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 928 | &buf->win_info.map); |
| 929 | break; |
| 930 | case DS_REPLACE_CIS: |
Dominik Brodowski | 53efec9 | 2008-07-28 19:44:05 +0200 | [diff] [blame] | 931 | ret = pcmcia_replace_cis(s, buf->cisdump.Data, buf->cisdump.Length); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 932 | break; |
| 933 | case DS_BIND_REQUEST: |
| 934 | if (!capable(CAP_SYS_ADMIN)) { |
| 935 | err = -EPERM; |
| 936 | goto free_out; |
| 937 | } |
| 938 | err = bind_request(s, &buf->bind_info); |
| 939 | break; |
| 940 | case DS_GET_DEVICE_INFO: |
| 941 | err = get_device_info(s, &buf->bind_info, 1); |
| 942 | break; |
| 943 | case DS_GET_NEXT_DEVICE: |
| 944 | err = get_device_info(s, &buf->bind_info, 0); |
| 945 | break; |
| 946 | case DS_UNBIND_REQUEST: |
| 947 | err = 0; |
| 948 | break; |
| 949 | default: |
| 950 | err = -EINVAL; |
| 951 | } |
| 952 | |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 953 | if ((err == 0) && (ret != 0)) { |
Dominik Brodowski | d50dbec | 2009-10-23 12:51:28 +0200 | [diff] [blame] | 954 | pr_debug("ds_ioctl: ret = %d\n", ret); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 955 | switch (ret) { |
Dominik Brodowski | 610e237 | 2008-08-03 11:58:53 +0200 | [diff] [blame] | 956 | case -ENODEV: |
| 957 | case -EINVAL: |
| 958 | case -EBUSY: |
| 959 | case -ENOSYS: |
| 960 | err = ret; |
| 961 | break; |
Dominik Brodowski | 610e237 | 2008-08-03 11:58:53 +0200 | [diff] [blame] | 962 | case -ENOMEM: |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 963 | err = -ENOSPC; break; |
Dominik Brodowski | 635d19b | 2008-08-03 11:47:29 +0200 | [diff] [blame] | 964 | case -ENOSPC: |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 965 | err = -ENODATA; break; |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 966 | default: |
| 967 | err = -EIO; break; |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | if (cmd & IOC_OUT) { |
| 972 | if (__copy_to_user(uarg, (char *)buf, size)) |
| 973 | err = -EFAULT; |
| 974 | } |
| 975 | |
| 976 | free_out: |
| 977 | kfree(buf); |
| 978 | return err; |
| 979 | } /* ds_ioctl */ |
| 980 | |
| 981 | /*====================================================================*/ |
| 982 | |
Arjan van de Ven | d54b1fd | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 983 | static const struct file_operations ds_fops = { |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 984 | .owner = THIS_MODULE, |
| 985 | .open = ds_open, |
| 986 | .release = ds_release, |
| 987 | .ioctl = ds_ioctl, |
| 988 | .read = ds_read, |
| 989 | .write = ds_write, |
| 990 | .poll = ds_poll, |
| 991 | }; |
| 992 | |
| 993 | void __init pcmcia_setup_ioctl(void) { |
| 994 | int i; |
| 995 | |
| 996 | /* Set up character device for user mode clients */ |
| 997 | i = register_chrdev(0, "pcmcia", &ds_fops); |
Dominik Brodowski | 1a8ceaf | 2005-06-27 16:29:00 -0700 | [diff] [blame] | 998 | if (i < 0) |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 999 | printk(KERN_NOTICE "unable to find a free device # for " |
Dominik Brodowski | 1a8ceaf | 2005-06-27 16:29:00 -0700 | [diff] [blame] | 1000 | "Driver Services (error=%d)\n", i); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 1001 | else |
| 1002 | major_dev = i; |
| 1003 | |
| 1004 | #ifdef CONFIG_PROC_FS |
akpm@linux-foundation.org | 97094dc | 2008-04-29 10:47:54 -0700 | [diff] [blame] | 1005 | proc_pccard = proc_mkdir("bus/pccard", NULL); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 1006 | if (proc_pccard) |
Alexey Dobriyan | e6be4a8 | 2009-09-21 17:03:55 -0700 | [diff] [blame] | 1007 | proc_create("drivers", 0, proc_pccard, &pccard_drivers_proc_fops); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 1008 | #endif |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | void __exit pcmcia_cleanup_ioctl(void) { |
| 1013 | #ifdef CONFIG_PROC_FS |
| 1014 | if (proc_pccard) { |
| 1015 | remove_proc_entry("drivers", proc_pccard); |
akpm@linux-foundation.org | 97094dc | 2008-04-29 10:47:54 -0700 | [diff] [blame] | 1016 | remove_proc_entry("bus/pccard", NULL); |
Dominik Brodowski | e7a480d | 2005-06-27 16:28:47 -0700 | [diff] [blame] | 1017 | } |
| 1018 | #endif |
| 1019 | if (major_dev != -1) |
| 1020 | unregister_chrdev(major_dev, "pcmcia"); |
| 1021 | } |