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Kernel/USB: Create controller base class and introduce USBManagement

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This removes Pipes dependency on the UHCIController by introducing a
controller base class. This will be used to implement other controllers
such as OHCI.

Additionally, there can be multiple instances of a UHCI controller.
For example, multiple UHCI instances can be required for systems with
EHCI controllers. EHCI relies on using multiple of either UHCI or OHCI
controllers to drive USB 1.x devices.

This means UHCIController can no longer be a singleton. Multiple
instances of it can now be created and passed to the device and then to
the pipe.

To handle finding and creating these instances, USBManagement has been
introduced. It has the same pattern as the other management classes
such as NetworkManagement.
This commit is contained in:
Luke 2021-08-08 19:50:20 +01:00 • committed by Andreas Kling
parent c5974d3518
commit 7a86a8df90
14 changed files with 261 additions and 74 deletions
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7
Kernel/Bus/USB/USBDevice.h
View file

@ -12,6 +12,8 @@
namespace Kernel::USB {
class USBController;
//
// Some nice info from FTDI on device enumeration and how some of this
// glues together:
@ -30,9 +32,9 @@ public:
};
public:
static KResultOr<NonnullRefPtr<Device>> try_create(PortNumber, DeviceSpeed);
static KResultOr<NonnullRefPtr<Device>> try_create(USBController const&, PortNumber, DeviceSpeed);
Device(PortNumber, DeviceSpeed, NonnullOwnPtr<Pipe> default_pipe);
Device(USBController const&, PortNumber, DeviceSpeed, NonnullOwnPtr<Pipe> default_pipe);
~Device();
KResult enumerate();
@ -54,6 +56,7 @@ private:
u16 m_product_id { 0 }; // This device's product ID assigned by the USB group
USBDeviceDescriptor m_device_descriptor; // Device Descriptor obtained from USB Device
NonnullRefPtr<USBController> m_controller;
NonnullOwnPtr<Pipe> m_default_pipe; // Default communication pipe (endpoint0) used during enumeration
};
}