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The daemon creates a baseclass of either FuUsbDevice or FuUdevDevice when the devices are added or coldplugged to match the quirk database and to find out what plugin to run. This is proxied to plugins, but they are given the GUsbDevice or GUdevDevice and the FuDevice is just thrown away. Most plugins either use a FuUsbDevice or superclassed version like FuNvmeDevice and so we re-create the FuDevice, re-probe the hardware, re-query the quirk database and then return this to the daemon. In some cases, plugins actually probe the hardware three times (!) by creating a FuUsbDevice to get the quirks, so that the plugin knows what kind of superclass to create, which then itself probes the hardware again. Passing the temporary FuDevice to the plugins means that the simplest ones can just fu_plugin_device_add() the passed in object, or create a superclass and incorporate the actual GUsbDevice and all the GUIDs. This breaks internal plugin API but speeds up startup substantially and deletes a lot of code.
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* Copyright (C) 2017 Richard Hughes <richard@hughsie.com>
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#ifndef __FU_USB_DEVICE_H
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#define __FU_USB_DEVICE_H
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#include <glib-object.h>
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#include <gusb.h>
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#include "fu-plugin.h"
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G_BEGIN_DECLS
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#define FU_TYPE_USB_DEVICE (fu_usb_device_get_type ())
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G_DECLARE_DERIVABLE_TYPE (FuUsbDevice, fu_usb_device, FU, USB_DEVICE, FuDevice)
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/* HID */
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#define HID_REPORT_GET 0x01
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#define HID_REPORT_SET 0x09
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#define HID_REPORT_TYPE_INPUT 0x01
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#define HID_REPORT_TYPE_OUTPUT 0x02
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#define HID_REPORT_TYPE_FEATURE 0x03
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#define HID_FEATURE 0x0300
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struct _FuUsbDeviceClass
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{
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FuDeviceClass parent_class;
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gboolean (*open) (FuUsbDevice *device,
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GError **error);
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gboolean (*close) (FuUsbDevice *device,
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GError **error);
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gboolean (*probe) (FuUsbDevice *device,
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GError **error);
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gpointer __reserved[28];
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};
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FuUsbDevice *fu_usb_device_new (GUsbDevice *usb_device);
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guint16 fu_usb_device_get_vid (FuUsbDevice *self);
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guint16 fu_usb_device_get_pid (FuUsbDevice *self);
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GUsbDevice *fu_usb_device_get_dev (FuUsbDevice *device);
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void fu_usb_device_set_dev (FuUsbDevice *device,
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GUsbDevice *usb_device);
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gboolean fu_usb_device_is_open (FuUsbDevice *device);
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G_END_DECLS
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#endif /* __FU_USB_DEVICE_H */
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