/****************************************************************************** * hypervisor.c * * Communication to/from hypervisor. * * Copyright (c) 2002-2003, K A Fraser * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include #include static unsigned long event_mask = 0; static unsigned long ev_err_count; void do_hypervisor_callback(struct pt_regs *regs) { unsigned long events, flags; shared_info_t *shared = HYPERVISOR_shared_info; do { /* Specialised local_irq_save(). */ flags = test_and_clear_bit(EVENTS_MASTER_ENABLE_BIT, &shared->events_mask); barrier(); events = xchg(&shared->events, 0); events &= event_mask; /* 'events' now contains some pending events to handle. */ __asm__ __volatile__ ( " push %1 ;" " sub $4,%%esp ;" " jmp 2f ;" "1: btrl %%eax,%0 ;" /* clear bit */ " mov %%eax,(%%esp) ;" " call do_event ;" /* do_event(event) */ "2: bsfl %0,%%eax ;" /* %eax == bit # */ " jnz 1b ;" " add $8,%%esp ;" /* we use %ebx because it is callee-saved */ : : "b" (events), "r" (regs) /* clobbered by callback function calls */ : "eax", "ecx", "edx", "memory" ); /* Specialised local_irq_restore(). */ if ( flags ) set_bit(EVENTS_MASTER_ENABLE_BIT, &shared->events_mask); barrier(); } while ( shared->events ); } void enable_hypervisor_event(unsigned int ev) { set_bit(ev, &event_mask); set_bit(ev, &HYPERVISOR_shared_info->events_mask); if ( test_bit(EVENTS_MASTER_ENABLE_BIT, &HYPERVISOR_shared_info->events_mask) ) do_hypervisor_callback(NULL); } void disable_hypervisor_event(unsigned int ev) { clear_bit(ev, &event_mask); clear_bit(ev, &HYPERVISOR_shared_info->events_mask); } void ack_hypervisor_event(unsigned int ev) { if ( !(event_mask & (1<events_mask); } /cgit.cgi/openwrt/upstream/tree/package/kernel/linux?id=d8b7d994782158332a5fef4d82c7cebf1a12935b'>linux/modules/virtual.mk
blob: 125ec72f154d1c9ca839abe47b1ba4487125cff3 (plain) 
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#
# Copyright (C) 2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

VIRTUAL_MENU:=Virtualization Support

define KernelPackage/virtio-balloon
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=VirtIO balloon driver
  DEPENDS:=@TARGET_x86_kvm_guest
  KCONFIG:=CONFIG_VIRTIO_BALLOON
  FILES:=$(LINUX_DIR)/drivers/virtio/virtio_balloon.ko
  AUTOLOAD:=$(call AutoLoad,06,virtio-balloon)
endef

define KernelPackage/virtio-balloon/description
 Kernel module for VirtIO memory ballooning support
endef

$(eval $(call KernelPackage,virtio-balloon))


define KernelPackage/virtio-net
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=VirtIO network driver
  DEPENDS:=@TARGET_x86_kvm_guest
  KCONFIG:=CONFIG_VIRTIO_NET
  FILES:=$(LINUX_DIR)/drivers/net/virtio_net.ko
  AUTOLOAD:=$(call AutoLoad,50,virtio_net)
endef

define KernelPackage/virtio-net/description
 Kernel module for the VirtIO paravirtualized network device
endef

$(eval $(call KernelPackage,virtio-net))


define KernelPackage/virtio-random
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=VirtIO Random Number Generator support
  DEPENDS:=@TARGET_x86_kvm_guest
  KCONFIG:=CONFIG_HW_RANDOM_VIRTIO
  FILES:=$(LINUX_DIR)/drivers/char/hw_random/virtio-rng.ko
  AUTOLOAD:=$(call AutoLoad,09,virtio-rng)
endef

define KernelPackage/virtio-random/description
 Kernel module for the VirtIO Random Number Generator
endef

$(eval $(call KernelPackage,virtio-random))

define KernelPackage/xen-fs
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen filesystem
  DEPENDS:=@TARGET_x86_xen_domu
  KCONFIG:= \
  	CONFIG_XENFS \
  	CONFIG_XEN_COMPAT_XENFS=y
  FILES:=$(LINUX_DIR)/drivers/xen/xenfs/xenfs.ko
  AUTOLOAD:=$(call AutoLoad,05,xenfs)
endef

define KernelPackage/xen-fs/description
 Kernel module for the Xen filesystem
endef

$(eval $(call KernelPackage,xen-fs))


define KernelPackage/xen-evtchn
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen event channels
  DEPENDS:=@TARGET_x86_xen_domu
  KCONFIG:=CONFIG_XEN_DEV_EVTCHN
  FILES:=$(LINUX_DIR)/drivers/xen/xen-evtchn.ko
  AUTOLOAD:=$(call AutoLoad,06,xen-evtchn)
endef

define KernelPackage/xen-evtchn/description
 Kernel module for the /dev/xen/evtchn device
endef

$(eval $(call KernelPackage,xen-evtchn))

define KernelPackage/xen-fbdev
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen virtual frame buffer
  DEPENDS:=@TARGET_x86_xen_domu +kmod-fb
  KCONFIG:= \
  	CONFIG_XEN_FBDEV_FRONTEND \
  	CONFIG_FB_DEFERRED_IO=y \
  	CONFIG_FB_SYS_COPYAREA \
  	CONFIG_FB_SYS_FILLRECT \
  	CONFIG_FB_SYS_FOPS \
  	CONFIG_FB_SYS_IMAGEBLIT \
  	CONFIG_FIRMWARE_EDID=n
  FILES:= \
  	$(LINUX_DIR)/drivers/video/xen-fbfront.ko \
  	$(LINUX_DIR)/drivers/video/syscopyarea.ko \
  	$(LINUX_DIR)/drivers/video/sysfillrect.ko \
  	$(LINUX_DIR)/drivers/video/fb_sys_fops.ko \
  	$(LINUX_DIR)/drivers/video/sysimgblt.ko
  AUTOLOAD:=$(call AutoLoad,07, \
  	fb \
  	syscopyarea \
  	sysfillrect \
  	fb_sys_fops \
  	sysimgblt \
  	xen-fbfront \
  )
endef

define KernelPackage/xen-fbdev/description
 Kernel module for the Xen virtual frame buffer
endef

$(eval $(call KernelPackage,xen-fbdev))


define KernelPackage/xen-kbddev
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen virtual keyboard and mouse
  DEPENDS:=@TARGET_x86_xen_domu
  KCONFIG:=CONFIG_XEN_KBDDEV_FRONTEND
  FILES:=$(LINUX_DIR)/drivers/input/xen-kbdfront.ko
  AUTOLOAD:=$(call AutoLoad,08,xen-kbdfront)
endef

define KernelPackage/xen-kbddev/description
 Kernel module for the Xen virtual keyboard and mouse
endef

$(eval $(call KernelPackage,xen-kbddev))


define KernelPackage/xen-netdev
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen network device frontend
  DEPENDS:=@TARGET_x86_xen_domu
  KCONFIG:=CONFIG_XEN_NETDEV_FRONTEND
  FILES:=$(LINUX_DIR)/drivers/net/xen-netfront.ko
  AUTOLOAD:=$(call AutoLoad,09,xen-netfront)
endef

define KernelPackage/xen-netdev/description
 Kernel module for the Xen network device frontend
endef

$(eval $(call KernelPackage,xen-netdev))


define KernelPackage/xen-pcidev
  SUBMENU:=$(VIRTUAL_MENU)
  TITLE:=Xen PCI device frontend
  DEPENDS:=@TARGET_x86_xen_domu
  KCONFIG:=CONFIG_XEN_PCIDEV_FRONTEND
  FILES:=$(LINUX_DIR)/drivers/pci/xen-pcifront.ko
  AUTOLOAD:=$(call AutoLoad,10,xen-pcifront)
endef

define KernelPackage/xen-pcidev/description
 Kernel module for the Xen network device frontend
endef

$(eval $(call KernelPackage,xen-pcidev))
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