1 files changed, 121 insertions, 0 deletions
diff --git a/config/grub/xhci/patches/0005-xhci/0004-grub-core-bus-usb-Add-function-pointer-for-attach-de.patch b/config/grub/xhci/patches/0005-xhci/0004-grub-core-bus-usb-Add-function-pointer-for-attach-de.patch
new file mode 100644
index 00000000..a090e0ea
--- /dev/null
+++ b/config/grub/xhci/patches/0005-xhci/0004-grub-core-bus-usb-Add-function-pointer-for-attach-de.patch
@@ -0,0 +1,121 @@
+From 89701aba00caa81bb566ab10da0c89264393be30 Mon Sep 17 00:00:00 2001
+From: Patrick Rudolph <patrick.rudolph@9elements.com>
+Date: Sun, 15 Nov 2020 19:51:42 +0100
+Subject: [PATCH 4/8] grub-core/bus/usb: Add function pointer for attach/detach
+ events
+
+The xHCI code needs to be called for attaching or detaching a device.
+Introduce two functions pointers and call it from the USB hub code.
+
+Will be used in future commits, currently this doesn't change any functionality.
+
+Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
+---
+ grub-core/bus/usb/ehci.c   |  2 ++
+ grub-core/bus/usb/ohci.c   |  2 ++
+ grub-core/bus/usb/uhci.c   |  2 ++
+ grub-core/bus/usb/usbhub.c | 19 +++++++++++++++++++
+ include/grub/usb.h         |  4 ++++
+ 5 files changed, 29 insertions(+)
+
+diff --git a/grub-core/bus/usb/ehci.c b/grub-core/bus/usb/ehci.c
+index 9abebc6bd..953b851c0 100644
+--- a/grub-core/bus/usb/ehci.c
++++ b/grub-core/bus/usb/ehci.c
+@@ -1812,6 +1812,8 @@ static struct grub_usb_controller_dev usb_controller = {
+   .hubports = grub_ehci_hubports,
+   .portstatus = grub_ehci_portstatus,
+   .detect_dev = grub_ehci_detect_dev,
++  .attach_dev = NULL,
++  .detach_dev = NULL,
+   /* estimated max. count of TDs for one bulk transfer */
+   .max_bulk_tds = GRUB_EHCI_N_TD * 3 / 4
+ };
+diff --git a/grub-core/bus/usb/ohci.c b/grub-core/bus/usb/ohci.c
+index 5363a61f6..7a3f3e154 100644
+--- a/grub-core/bus/usb/ohci.c
++++ b/grub-core/bus/usb/ohci.c
+@@ -1440,6 +1440,8 @@ static struct grub_usb_controller_dev usb_controller =
+   .hubports = grub_ohci_hubports,
+   .portstatus = grub_ohci_portstatus,
+   .detect_dev = grub_ohci_detect_dev,
++  .attach_dev = NULL,
++  .detach_dev = NULL,
+   /* estimated max. count of TDs for one bulk transfer */
+   .max_bulk_tds = GRUB_OHCI_TDS * 3 / 4
+ };
+diff --git a/grub-core/bus/usb/uhci.c b/grub-core/bus/usb/uhci.c
+index 0fdea4c1e..03c4605b2 100644
+--- a/grub-core/bus/usb/uhci.c
++++ b/grub-core/bus/usb/uhci.c
+@@ -845,6 +845,8 @@ static struct grub_usb_controller_dev usb_controller =
+   .hubports = grub_uhci_hubports,
+   .portstatus = grub_uhci_portstatus,
+   .detect_dev = grub_uhci_detect_dev,
++  .attach_dev = NULL,
++  .detach_dev = NULL,
+   /* estimated max. count of TDs for one bulk transfer */
+   .max_bulk_tds = N_TD * 3 / 4
+ };
+diff --git a/grub-core/bus/usb/usbhub.c b/grub-core/bus/usb/usbhub.c
+index 2ae29cba1..8e963e84b 100644
+--- a/grub-core/bus/usb/usbhub.c
++++ b/grub-core/bus/usb/usbhub.c
+@@ -66,6 +66,15 @@ grub_usb_hub_add_dev (grub_usb_controller_t controller,
+   dev->split_hubport = split_hubport;
+   dev->split_hubaddr = split_hubaddr;
+ 
++  if (controller->dev->attach_dev) {
++    err = controller->dev->attach_dev (controller, dev);
++    if (err)
++      {
++	grub_free (dev);
++	return NULL;
++      }
++  }
++
+   err = grub_usb_device_initialize (dev);
+   if (err)
+     {
+@@ -405,6 +414,8 @@ static void
+ detach_device (grub_usb_device_t dev)
+ {
+   unsigned i;
++  grub_usb_err_t err;
++
+   int k;
+   if (!dev)
+     return;
+@@ -425,6 +436,14 @@ detach_device (grub_usb_device_t dev)
+ 	  if (inter && inter->detach_hook)
+ 	    inter->detach_hook (dev, i, k);
+ 	}
++  if (dev->controller.dev->detach_dev) {
++    err = dev->controller.dev->detach_dev (&dev->controller, dev);
++    if (err)
++      {
++	// XXX
++      }
++  }
++
+   grub_usb_devs[dev->addr] = 0;
+ }
+ 
+diff --git a/include/grub/usb.h b/include/grub/usb.h
+index ea6ee8c2c..4dd179db2 100644
+--- a/include/grub/usb.h
++++ b/include/grub/usb.h
+@@ -126,6 +126,10 @@ struct grub_usb_controller_dev
+ 
+   grub_usb_speed_t (*detect_dev) (grub_usb_controller_t dev, int port, int *changed);
+ 
++  grub_usb_err_t (*attach_dev) (grub_usb_controller_t ctrl, grub_usb_device_t dev);
++
++  grub_usb_err_t (*detach_dev) (grub_usb_controller_t ctrl, grub_usb_device_t dev);
++
+   /* Per controller flag - port reset pending, don't do another reset */
+   grub_uint64_t pending_reset;
+ 
+-- 
+2.39.2
+