X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fcore%2Fusb.c;h=4e984060c984b4cbb715607f26ab13dfb05d357e;hb=2c044a4803804708984931bcbd03314732e995d5;hp=0fee5c66fd64ea44ef0531453b1b0bfb60cc7614;hpb=b91cba52e9b7b3f1c0037908a192d93a869ca9e5;p=linux-2.6 diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 0fee5c66fd..4e984060c9 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -36,7 +36,7 @@ #include #include -#include +#include #include #include @@ -96,6 +96,7 @@ struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev, return NULL; } +EXPORT_SYMBOL_GPL(usb_ifnum_to_if); /** * usb_altnum_to_altsetting - get the altsetting structure with a given @@ -115,8 +116,9 @@ struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev, * Don't call this function unless you are bound to the intf interface * or you have locked the device! */ -struct usb_host_interface *usb_altnum_to_altsetting(const struct usb_interface *intf, - unsigned int altnum) +struct usb_host_interface *usb_altnum_to_altsetting( + const struct usb_interface *intf, + unsigned int altnum) { int i; @@ -126,13 +128,14 @@ struct usb_host_interface *usb_altnum_to_altsetting(const struct usb_interface * } return NULL; } +EXPORT_SYMBOL_GPL(usb_altnum_to_altsetting); struct find_interface_arg { int minor; struct usb_interface *interface; }; -static int __find_interface(struct device * dev, void * data) +static int __find_interface(struct device *dev, void *data) { struct find_interface_arg *arg = data; struct usb_interface *intf; @@ -154,7 +157,7 @@ static int __find_interface(struct device * dev, void * data) * @drv: the driver whose current configuration is considered * @minor: the minor number of the desired device * - * This walks the driver device list and returns a pointer to the interface + * This walks the driver device list and returns a pointer to the interface * with the matching minor. Note, this only works for devices that share the * USB major number. */ @@ -170,6 +173,7 @@ struct usb_interface *usb_find_interface(struct usb_driver *drv, int minor) __find_interface); return argb.interface; } +EXPORT_SYMBOL_GPL(usb_find_interface); /** * usb_release_dev - free a usb device structure when all users of it are finished. @@ -192,9 +196,34 @@ static void usb_release_dev(struct device *dev) kfree(udev); } +#ifdef CONFIG_HOTPLUG +static int usb_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct usb_device *usb_dev; + + usb_dev = to_usb_device(dev); + + if (add_uevent_var(env, "BUSNUM=%03d", usb_dev->bus->busnum)) + return -ENOMEM; + + if (add_uevent_var(env, "DEVNUM=%03d", usb_dev->devnum)) + return -ENOMEM; + + return 0; +} + +#else + +static int usb_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + return -ENODEV; +} +#endif /* CONFIG_HOTPLUG */ + struct device_type usb_device_type = { .name = "usb_device", .release = usb_release_dev, + .uevent = usb_dev_uevent, }; #ifdef CONFIG_PM @@ -205,7 +234,7 @@ static int ksuspend_usb_init(void) * singlethreaded. Its job doesn't justify running on more * than one CPU. */ - ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd"); + ksuspend_usb_wq = create_singlethread_workqueue("ksuspend_usbd"); if (!ksuspend_usb_wq) return -ENOMEM; return 0; @@ -223,6 +252,15 @@ static void ksuspend_usb_cleanup(void) #endif /* CONFIG_PM */ + +/* Returns 1 if @usb_bus is WUSB, 0 otherwise */ +static unsigned usb_bus_is_wusb(struct usb_bus *bus) +{ + struct usb_hcd *hcd = container_of(bus, struct usb_hcd, self); + return hcd->wireless; +} + + /** * usb_alloc_dev - usb device constructor (usbcore-internal) * @parent: hub to which device is connected; null to allocate a root hub @@ -235,10 +273,12 @@ static void ksuspend_usb_cleanup(void) * * This call may not be used in a non-sleeping context. */ -struct usb_device * -usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) +struct usb_device *usb_alloc_dev(struct usb_device *parent, + struct usb_bus *bus, unsigned port1) { struct usb_device *dev; + struct usb_hcd *usb_hcd = container_of(bus, struct usb_hcd, self); + unsigned root_hub = 0; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) @@ -255,12 +295,14 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) dev->dev.dma_mask = bus->controller->dma_mask; set_dev_node(&dev->dev, dev_to_node(bus->controller)); dev->state = USB_STATE_ATTACHED; + atomic_set(&dev->urbnum, 0); INIT_LIST_HEAD(&dev->ep0.urb_list); dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE; dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT; /* ep0 maxpacket comes later, from device descriptor */ - dev->ep_in[0] = dev->ep_out[0] = &dev->ep0; + usb_enable_endpoint(dev, &dev->ep0); + dev->can_submit = 1; /* Save readable and stable topology id, distinguishing devices * by location for diagnostics, tools, driver model, etc. The @@ -275,6 +317,7 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) dev->dev.parent = bus->controller; sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum); + root_hub = 1; } else { /* match any labeling on the hubs; it's one-based */ if (parent->devpath[0] == '0') @@ -300,7 +343,15 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) mutex_init(&dev->pm_mutex); INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work); dev->autosuspend_delay = usb_autosuspend_delay * HZ; + dev->connect_time = jiffies; + dev->active_duration = -jiffies; #endif + if (root_hub) /* Root hub always ok [and always wired] */ + dev->authorized = 1; + else { + dev->authorized = usb_hcd->authorized_default; + dev->wusb = usb_bus_is_wusb(bus)? 1 : 0; + } return dev; } @@ -322,6 +373,7 @@ struct usb_device *usb_get_dev(struct usb_device *dev) get_device(&dev->dev); return dev; } +EXPORT_SYMBOL_GPL(usb_get_dev); /** * usb_put_dev - release a use of the usb device structure @@ -335,6 +387,7 @@ void usb_put_dev(struct usb_device *dev) if (dev) put_device(&dev->dev); } +EXPORT_SYMBOL_GPL(usb_put_dev); /** * usb_get_intf - increments the reference count of the usb interface structure @@ -355,6 +408,7 @@ struct usb_interface *usb_get_intf(struct usb_interface *intf) get_device(&intf->dev); return intf; } +EXPORT_SYMBOL_GPL(usb_get_intf); /** * usb_put_intf - release a use of the usb interface structure @@ -369,7 +423,7 @@ void usb_put_intf(struct usb_interface *intf) if (intf) put_device(&intf->dev); } - +EXPORT_SYMBOL_GPL(usb_put_intf); /* USB device locking * @@ -416,11 +470,11 @@ int usb_lock_device_for_reset(struct usb_device *udev, return -EHOSTUNREACH; if (iface) { switch (iface->condition) { - case USB_INTERFACE_BINDING: + case USB_INTERFACE_BINDING: return 0; - case USB_INTERFACE_BOUND: + case USB_INTERFACE_BOUND: break; - default: + default: return -EINTR; } } @@ -442,7 +496,7 @@ int usb_lock_device_for_reset(struct usb_device *udev, } return 1; } - +EXPORT_SYMBOL_GPL(usb_lock_device_for_reset); static struct usb_device *match_device(struct usb_device *dev, u16 vendor_id, u16 product_id) @@ -495,10 +549,10 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id) struct list_head *buslist; struct usb_bus *bus; struct usb_device *dev = NULL; - + mutex_lock(&usb_bus_list_lock); for (buslist = usb_bus_list.next; - buslist != &usb_bus_list; + buslist != &usb_bus_list; buslist = buslist->next) { bus = container_of(buslist, struct usb_bus, bus_list); if (!bus->root_hub) @@ -531,6 +585,7 @@ int usb_get_current_frame_number(struct usb_device *dev) { return usb_hcd_get_frame_number(dev); } +EXPORT_SYMBOL_GPL(usb_get_current_frame_number); /*-------------------------------------------------------------------*/ /* @@ -539,7 +594,7 @@ int usb_get_current_frame_number(struct usb_device *dev) */ int __usb_get_extra_descriptor(char *buffer, unsigned size, - unsigned char type, void **ptr) + unsigned char type, void **ptr) { struct usb_descriptor_header *header; @@ -550,7 +605,7 @@ int __usb_get_extra_descriptor(char *buffer, unsigned size, printk(KERN_ERR "%s: bogus descriptor, type %d length %d\n", usbcore_name, - header->bDescriptorType, + header->bDescriptorType, header->bLength); return -1; } @@ -565,6 +620,7 @@ int __usb_get_extra_descriptor(char *buffer, unsigned size, } return -1; } +EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor); /** * usb_buffer_alloc - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP @@ -588,17 +644,14 @@ int __usb_get_extra_descriptor(char *buffer, unsigned size, * * When the buffer is no longer used, free it with usb_buffer_free(). */ -void *usb_buffer_alloc( - struct usb_device *dev, - size_t size, - gfp_t mem_flags, - dma_addr_t *dma -) +void *usb_buffer_alloc(struct usb_device *dev, size_t size, gfp_t mem_flags, + dma_addr_t *dma) { if (!dev || !dev->bus) return NULL; return hcd_buffer_alloc(dev->bus, size, mem_flags, dma); } +EXPORT_SYMBOL_GPL(usb_buffer_alloc); /** * usb_buffer_free - free memory allocated with usb_buffer_alloc() @@ -611,12 +664,8 @@ void *usb_buffer_alloc( * been allocated using usb_buffer_alloc(), and the parameters must match * those provided in that allocation request. */ -void usb_buffer_free( - struct usb_device *dev, - size_t size, - void *addr, - dma_addr_t dma -) +void usb_buffer_free(struct usb_device *dev, size_t size, void *addr, + dma_addr_t dma) { if (!dev || !dev->bus) return; @@ -624,6 +673,7 @@ void usb_buffer_free( return; hcd_buffer_free(dev->bus, size, addr, dma); } +EXPORT_SYMBOL_GPL(usb_buffer_free); /** * usb_buffer_map - create DMA mapping(s) for an urb @@ -663,14 +713,15 @@ struct urb *usb_buffer_map(struct urb *urb) urb->setup_packet, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); - // FIXME generic api broken like pci, can't report errors - // if (urb->transfer_dma == DMA_ADDR_INVALID) return 0; + /* FIXME generic api broken like pci, can't report errors */ + /* if (urb->transfer_dma == DMA_ADDR_INVALID) return 0; */ } else urb->transfer_dma = ~0; urb->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); return urb; } +EXPORT_SYMBOL_GPL(usb_buffer_map); #endif /* 0 */ /* XXX DISABLED, no users currently. If you wish to re-enable this @@ -708,6 +759,7 @@ void usb_buffer_dmasync(struct urb *urb) DMA_TO_DEVICE); } } +EXPORT_SYMBOL_GPL(usb_buffer_dmasync); #endif /** @@ -743,12 +795,13 @@ void usb_buffer_unmap(struct urb *urb) urb->transfer_flags &= ~(URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); } +EXPORT_SYMBOL_GPL(usb_buffer_unmap); #endif /* 0 */ /** * usb_buffer_map_sg - create scatterlist DMA mapping(s) for an endpoint * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to map * @nents: the number of entries in the scatterlist * @@ -771,23 +824,23 @@ void usb_buffer_unmap(struct urb *urb) * * Reverse the effect of this call with usb_buffer_unmap_sg(). */ -int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe, +int usb_buffer_map_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int nents) { struct usb_bus *bus; struct device *controller; if (!dev - || usb_pipecontrol(pipe) || !(bus = dev->bus) || !(controller = bus->controller) || !controller->dma_mask) return -1; - // FIXME generic api broken like pci, can't report errors + /* FIXME generic api broken like pci, can't report errors */ return dma_map_sg(controller, sg, nents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } +EXPORT_SYMBOL_GPL(usb_buffer_map_sg); /* XXX DISABLED, no users currently. If you wish to re-enable this * XXX please determine whether the sync is to transfer ownership of @@ -799,14 +852,14 @@ int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe, /** * usb_buffer_dmasync_sg - synchronize DMA and CPU view of scatterlist buffer(s) * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to synchronize * @n_hw_ents: the positive return value from usb_buffer_map_sg * * Use this when you are re-using a scatterlist's data buffers for * another USB request. */ -void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe, +void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int n_hw_ents) { struct usb_bus *bus; @@ -819,20 +872,21 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe, return; dma_sync_sg(controller, sg, n_hw_ents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } +EXPORT_SYMBOL_GPL(usb_buffer_dmasync_sg); #endif /** * usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to unmap * @n_hw_ents: the positive return value from usb_buffer_map_sg * * Reverses the effect of usb_buffer_map_sg(). */ -void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe, +void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int n_hw_ents) { struct usb_bus *bus; @@ -845,8 +899,9 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe, return; dma_unmap_sg(controller, sg, n_hw_ents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } +EXPORT_SYMBOL_GPL(usb_buffer_unmap_sg); /* format to disable USB on kernel command line is: nousb */ __module_param_call("", nousb, param_set_bool, param_get_bool, &nousb, 0444); @@ -858,6 +913,7 @@ int usb_disabled(void) { return nousb; } +EXPORT_SYMBOL_GPL(usb_disabled); /* * Init @@ -874,7 +930,7 @@ static int __init usb_init(void) if (retval) goto out; retval = bus_register(&usb_bus_type); - if (retval) + if (retval) goto bus_register_failed; retval = usb_host_init(); if (retval) @@ -939,46 +995,4 @@ static void __exit usb_exit(void) subsys_initcall(usb_init); module_exit(usb_exit); - -/* - * USB may be built into the kernel or be built as modules. - * These symbols are exported for device (or host controller) - * driver modules to use. - */ - -EXPORT_SYMBOL(usb_disabled); - -EXPORT_SYMBOL_GPL(usb_get_intf); -EXPORT_SYMBOL_GPL(usb_put_intf); - -EXPORT_SYMBOL(usb_put_dev); -EXPORT_SYMBOL(usb_get_dev); -EXPORT_SYMBOL(usb_hub_tt_clear_buffer); - -EXPORT_SYMBOL(usb_lock_device_for_reset); - -EXPORT_SYMBOL(usb_find_interface); -EXPORT_SYMBOL(usb_ifnum_to_if); -EXPORT_SYMBOL(usb_altnum_to_altsetting); - -EXPORT_SYMBOL(__usb_get_extra_descriptor); - -EXPORT_SYMBOL(usb_find_device); -EXPORT_SYMBOL(usb_get_current_frame_number); - -EXPORT_SYMBOL(usb_buffer_alloc); -EXPORT_SYMBOL(usb_buffer_free); - -#if 0 -EXPORT_SYMBOL(usb_buffer_map); -EXPORT_SYMBOL(usb_buffer_dmasync); -EXPORT_SYMBOL(usb_buffer_unmap); -#endif - -EXPORT_SYMBOL(usb_buffer_map_sg); -#if 0 -EXPORT_SYMBOL(usb_buffer_dmasync_sg); -#endif -EXPORT_SYMBOL(usb_buffer_unmap_sg); - MODULE_LICENSE("GPL");