diff options
Diffstat (limited to 'drivers/staging/unisys/include/visorbus.h')
| -rw-r--r-- | drivers/staging/unisys/include/visorbus.h | 159 |
1 files changed, 67 insertions, 92 deletions
diff --git a/drivers/staging/unisys/include/visorbus.h b/drivers/staging/unisys/include/visorbus.h index e4ee38c3dbe4..1a0986ba3d24 100644 --- a/drivers/staging/unisys/include/visorbus.h +++ b/drivers/staging/unisys/include/visorbus.h @@ -28,87 +28,20 @@ #define __VISORBUS_H__ #include <linux/device.h> -#include <linux/module.h> -#include <linux/slab.h> -#include "channel.h" - -struct visor_device; -extern struct bus_type visorbus_type; - -typedef void (*visorbus_state_complete_func) (struct visor_device *dev, - int status); +#include "visorchannel.h" struct visorchipset_state { u32 created:1; u32 attached:1; u32 configured:1; u32 running:1; - /* Add new fields above. */ - /* Remaining bits in this 32-bit word are unused. */ -}; - -/* - * This struct describes a specific Supervisor channel, by providing its - * GUID, name, and sizes. - */ -struct visor_channeltype_descriptor { - const guid_t guid; - const char *name; + /* Remaining bits in this 32-bit word are reserved. */ }; /** - * struct visor_driver - Information provided by each visor driver when it - * registers with the visorbus driver. - * @name: Name of the visor driver. - * @owner: The module owner. - * @channel_types: Types of channels handled by this driver, ending with - * a zero GUID. Our specialized BUS.match() method knows - * about this list, and uses it to determine whether this - * driver will in fact handle a new device that it has - * detected. - * @probe: Called when a new device comes online, by our probe() - * function specified by driver.probe() (triggered - * ultimately by some call to driver_register(), - * bus_add_driver(), or driver_attach()). - * @remove: Called when a new device is removed, by our remove() - * function specified by driver.remove() (triggered - * ultimately by some call to device_release_driver()). - * @channel_interrupt: Called periodically, whenever there is a possiblity - * that "something interesting" may have happened to the - * channel. - * @pause: Called to initiate a change of the device's state. If - * the return valu`e is < 0, there was an error and the - * state transition will NOT occur. If the return value - * is >= 0, then the state transition was INITIATED - * successfully, and complete_func() will be called (or - * was just called) with the final status when either the - * state transition fails or completes successfully. - * @resume: Behaves similar to pause. - * @driver: Private reference to the device driver. For use by bus - * driver only. - */ -struct visor_driver { - const char *name; - struct module *owner; - struct visor_channeltype_descriptor *channel_types; - int (*probe)(struct visor_device *dev); - void (*remove)(struct visor_device *dev); - void (*channel_interrupt)(struct visor_device *dev); - int (*pause)(struct visor_device *dev, - visorbus_state_complete_func complete_func); - int (*resume)(struct visor_device *dev, - visorbus_state_complete_func complete_func); - - /* These fields are for private use by the bus driver only. */ - struct device_driver driver; -}; - -#define to_visor_driver(x) (container_of(x, struct visor_driver, driver)) - -/** * struct visor_device - A device type for things "plugged" into the visorbus - * bus + * bus * @visorchannel: Points to the channel that the device is * associated with. * @channel_type_guid: Identifies the channel type to the bus driver. @@ -139,7 +72,6 @@ struct visor_driver { * same across all visor_devices in the current * guest. Private use by bus driver only. */ - struct visor_device { struct visorchannel *visorchannel; guid_t channel_type_guid; @@ -161,11 +93,74 @@ struct visor_device { void *vbus_hdr_info; guid_t partition_guid; struct dentry *debugfs_dir; - struct dentry *debugfs_client_bus_info; + struct dentry *debugfs_bus_info; }; #define to_visor_device(x) container_of(x, struct visor_device, device) +typedef void (*visorbus_state_complete_func) (struct visor_device *dev, + int status); + +/* + * This struct describes a specific visor channel, by providing its GUID, name, + * and sizes. + */ +struct visor_channeltype_descriptor { + const guid_t guid; + const char *name; + u64 min_bytes; + u32 version; +}; + +/** + * struct visor_driver - Information provided by each visor driver when it + * registers with the visorbus driver + * @name: Name of the visor driver. + * @owner: The module owner. + * @channel_types: Types of channels handled by this driver, ending with + * a zero GUID. Our specialized BUS.match() method knows + * about this list, and uses it to determine whether this + * driver will in fact handle a new device that it has + * detected. + * @probe: Called when a new device comes online, by our probe() + * function specified by driver.probe() (triggered + * ultimately by some call to driver_register(), + * bus_add_driver(), or driver_attach()). + * @remove: Called when a new device is removed, by our remove() + * function specified by driver.remove() (triggered + * ultimately by some call to device_release_driver()). + * @channel_interrupt: Called periodically, whenever there is a possiblity + * that "something interesting" may have happened to the + * channel. + * @pause: Called to initiate a change of the device's state. If + * the return valu`e is < 0, there was an error and the + * state transition will NOT occur. If the return value + * is >= 0, then the state transition was INITIATED + * successfully, and complete_func() will be called (or + * was just called) with the final status when either the + * state transition fails or completes successfully. + * @resume: Behaves similar to pause. + * @driver: Private reference to the device driver. For use by bus + * driver only. + */ +struct visor_driver { + const char *name; + struct module *owner; + struct visor_channeltype_descriptor *channel_types; + int (*probe)(struct visor_device *dev); + void (*remove)(struct visor_device *dev); + void (*channel_interrupt)(struct visor_device *dev); + int (*pause)(struct visor_device *dev, + visorbus_state_complete_func complete_func); + int (*resume)(struct visor_device *dev, + visorbus_state_complete_func complete_func); + + /* These fields are for private use by the bus driver only. */ + struct device_driver driver; +}; + +#define to_visor_driver(x) (container_of(x, struct visor_driver, driver)) + int visor_check_channel(struct channel_header *ch, struct device *dev, const guid_t *expected_uuid, char *chname, u64 expected_min_bytes, u32 expected_version, @@ -182,26 +177,6 @@ int visorbus_write_channel(struct visor_device *dev, int visorbus_enable_channel_interrupts(struct visor_device *dev); void visorbus_disable_channel_interrupts(struct visor_device *dev); -/* - * Levels of severity for diagnostic events, in order from lowest severity to - * highest (i.e. fatal errors are the most severe, and should always be logged, - * but info events rarely need to be logged except during debugging). The - * values DIAG_SEVERITY_ENUM_BEGIN and DIAG_SEVERITY_ENUM_END are not valid - * severity values. They exist merely to dilineate the list, so that future - * additions won't require changes to the driver (i.e. when checking for - * out-of-range severities in SetSeverity). The values DIAG_SEVERITY_OVERRIDE - * and DIAG_SEVERITY_SHUTOFF are not valid severity values for logging events - * but they are valid for controlling the amount of event data. Changes made - * to the enum, need to be reflected in s-Par. - */ -enum diag_severity { - DIAG_SEVERITY_VERBOSE = 0, - DIAG_SEVERITY_INFO = 1, - DIAG_SEVERITY_WARNING = 2, - DIAG_SEVERITY_ERR = 3, - DIAG_SEVERITY_PRINT = 4, -}; - int visorchannel_signalremove(struct visorchannel *channel, u32 queue, void *msg); int visorchannel_signalinsert(struct visorchannel *channel, u32 queue, |