From 1eebcfa03ee7d7bc328d0ef460609fe3535966bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <jerome.duval@gmail.com>
Date: Wed, 28 Sep 2022 22:43:42 +0200
Subject: [PATCH] usb: add an interface for usb controllers using the new
 driver API

Change-Id: I25f481c8a7c3e4aafa3080640ce156b9232eaf73
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5707
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
---
 src/add-ons/kernel/bus_managers/usb/usb.cpp   | 36 +++++++++++++++++++
 .../kernel/bus_managers/usb/usb_private.h     | 18 ++++++++++
 2 files changed, 54 insertions(+)

diff --git a/src/add-ons/kernel/bus_managers/usb/usb.cpp b/src/add-ons/kernel/bus_managers/usb/usb.cpp
index fec533f578..ae2ac51770 100644
--- a/src/add-ons/kernel/bus_managers/usb/usb.cpp
+++ b/src/add-ons/kernel/bus_managers/usb/usb.cpp
@@ -895,8 +895,44 @@ struct usb_module_info_v2 gModuleInfoV2 = {
 //
 
 
+status_t
+usb_added_device(device_node *parent)
+{
+	dprintf("usb_added_device\n");
+	return B_OK;
+}
+
+
+status_t
+usb_get_stack(void** stack)
+{
+	*stack = gUSBStack;
+	return B_OK;
+}
+
+
+usb_for_controller_interface gForControllerModule = {
+	{
+		{
+			USB_FOR_CONTROLLER_MODULE_NAME,
+			B_KEEP_LOADED,
+			&bus_std_ops
+		},
+
+		NULL, // supported devices
+		usb_added_device,
+		NULL,
+		NULL,
+		NULL
+	},
+
+	usb_get_stack,
+};
+
+
 module_info *modules[] = {
 	(module_info *)&gModuleInfoV2,
 	(module_info *)&gModuleInfoV3,
+	(module_info *)&gForControllerModule,
 	NULL
 };
diff --git a/src/add-ons/kernel/bus_managers/usb/usb_private.h b/src/add-ons/kernel/bus_managers/usb/usb_private.h
index a5bcd77fa4..a5734048db 100644
--- a/src/add-ons/kernel/bus_managers/usb/usb_private.h
+++ b/src/add-ons/kernel/bus_managers/usb/usb_private.h
@@ -759,4 +759,22 @@ private:
 		uint16						fBandwidth;
 };
 
+
+#include <device_manager.h>
+
+
+// Interface between usb_bus and underlying implementation (xhci_pci)
+typedef struct usb_bus_interface {
+	driver_module_info info;
+} usb_bus_interface;
+
+
+typedef struct {
+	driver_module_info info;
+	status_t           (*get_stack)(void** stack);
+} usb_for_controller_interface;
+
+#define USB_FOR_CONTROLLER_MODULE_NAME "bus_managers/usb/controller/driver_v1"
+
+
 #endif // _USB_PRIVATE_H