From 598b1345d9d0b40b9e2f015afcef6510e270b7a9 Mon Sep 17 00:00:00 2001 From: Peter Grehan Date: Thu, 3 May 2018 22:51:44 +0000 Subject: Allow PCI VGA devices to be detached. GPUs often have a VGA PCI class code and are probed/attached by the VGA driver. Allow them to be detached so they can be presented as passthru devices to VM guests. Submitted by: mmacy Reviewed by: jhb, imp, rgrimes MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D15269 --- sys/dev/pci/vga_pci.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sys/dev/pci/vga_pci.c b/sys/dev/pci/vga_pci.c index 3e19912a92c1..197a7d0e0797 100644 --- a/sys/dev/pci/vga_pci.c +++ b/sys/dev/pci/vga_pci.c @@ -282,6 +282,17 @@ vga_pci_suspend(device_t dev) return (bus_generic_suspend(dev)); } +static int +vga_pci_detach(device_t dev) +{ + int error; + + error = bus_generic_detach(dev); + if (error == 0) + error = device_delete_children(dev); + return (error); +} + static int vga_pci_resume(device_t dev) { @@ -620,6 +631,7 @@ static device_method_t vga_pci_methods[] = { DEVMETHOD(device_attach, vga_pci_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, vga_pci_suspend), + DEVMETHOD(device_detach, vga_pci_detach), DEVMETHOD(device_resume, vga_pci_resume), /* Bus interface */ -- cgit v1.2.3