semaphore 设备模型(上)(2)

125 const char * name;

126 struct bus_type * bus;

127

128 struct kobject kobj;

129 struct klist klist_devices;

130 struct klist_node knode_bus;

131

132 struct module * owner;

133 const char * mod_name; /* used for built-in modules */

134 struct module_kobject * mkobj;

135

136 int (*probe) (struct device * dev);

137 int (*remove) (struct device * dev);

138 void (*shutdown) (struct device * dev);

139 int (*suspend) (struct device * dev, pm_message_t state);

140 int (*resume) (struct device * dev);

141 };

407 struct device {

408 struct klistklist_children;

409 struct klist_nodeknode_parent;/* node in sibling list */

410 struct klist_nodeknode_driver;

411 struct klist_nodeknode_bus;

412 struct device*parent;

413

414 struct kobject kobj;

415 charbus_id[BUS_ID_SIZE];/* position on parent bus */

416 struct device_type*type;

417 unsignedis_registered:1;

418 unsigneduevent_suppress:1;

419

420 struct semaphoresem;/* semaphore to synchronize calls to

421 * its driver.

422 */

423

424 struct bus_type* bus;/* type of bus device is on */

425 struct device_driver *driver;/* which driver has allocated this

426 device */

427 void*driver_data;/* data private to the driver */

428 void*platform_data;/* Platform specific data, device

429 core doesn't touch it */

430 struct dev_pm_infopower;

431

432 #ifdef CONFIG_NUMA

433 intnuma_node;/* NUMA node this device is close to */

434 #endif

435 u64*dma_mask;/* dma mask (if dma'able device) */

436 u64coherent_dma_mask;/* Like dma_mask, but for

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