remove unmodified_drivers directory

Having Linux kernel drivers for 2.6 based kernels in the Xen tree is
not really needed any longer. So remove them from the tree.

In case anyone wants to look at them they are still available in
older branches.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

.gitignore

@@ -326,10 +326,6 @@ xen/xen
 xen/xen-syms
 xen/xen-syms.map
 xen/xen.*
-unmodified_drivers/linux-2.6/.tmp_versions
-unmodified_drivers/linux-2.6/*.cmd
-unmodified_drivers/linux-2.6/*.ko
-unmodified_drivers/linux-2.6/*.mod.c
 LibVNCServer*
 
 tools/qemu-xen-dir-remote

.hgignore

@@ -326,8 +326,4 @@
 ^xen/xen$
 ^xen/xen-syms$
 ^xen/xen\..*$
-^unmodified_drivers/linux-2.6/\.tmp_versions
-^unmodified_drivers/linux-2.6/.*\.cmd$
-^unmodified_drivers/linux-2.6/.*\.ko$
-^unmodified_drivers/linux-2.6/.*\.mod\.c$
 ^LibVNCServer.*

MAINTAINERS

@@ -421,12 +421,6 @@ F:	*/configure
 F:	*/*.ac
 F:	tools/
 
-UNMODIFIED LINUX PV DRIVERS
-M:	Jan Beulich <jbeulich@suse.com>
-S:	Obsolete
-L:	xen-devel@lists.xenproject.org
-F:	unmodified_drivers/linux-2.6/
-
 VM EVENT, MEM ACCESS and MONITOR
 M:	Tamas K Lengyel <tamas@tklengyel.com>
 R:	Alexandru Isaila <aisaila@bitdefender.com>

unmodified_drivers/linux-2.6/Makefile

@@ -1,8 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m += platform-pci/
-obj-m += balloon/
-obj-m += blkfront/
-obj-m += netfront/
-obj-m += scsifront/
-obj-m += usbfront/

unmodified_drivers/linux-2.6/README

@@ -1,24 +0,0 @@
-These drivers provide paravirtualised drivers for pre-PVops Linux
-kernels which have the classic-Xen patches applied. They do not work
-with kernels which are not patched with the classic-Xen patches. In
-particular this includes all PVops kernels.
-
-For 2.6.36 and newer you should use the "PVHVM" functionality which is
-available in the mainline kernel.
-
-To build do one of:
-
-   ./mkbuildtree [<arch>]
-   NB. You can override paths to Xen sources and a (stub) XenLinux
-       build tree via the XEN and XL environment variable.
-
-- or -
-   make -C /path/to/kernel/build M=$PWD modules
-   NB. This is your native kernel build tree (or a distro provided
-       stub), not the XenLinux sources referred to in step 1.
-   NB. If you are cross compiling, you need to set ARCH and
-       CROSS_COMPILE too.
-
-You get four modules, xen-platform-pci.ko, xen-vbd.ko, xen-vnif.ko and
-xen-balloon.ko.  Load xen-platform-pci first, and then
-whichever of xen-vbd, xen-vnif and xen-balloon.ko you happen to need.

unmodified_drivers/linux-2.6/balloon/Kbuild

@@ -1,8 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m  = xen-balloon.o
-
-EXTRA_CFLAGS += -I$(M)/platform-pci
-
-xen-balloon-y := balloon.o sysfs.o
-xen-balloon-$(CONFIG_XEN_SCRUB_PAGES) += scrub.o

unmodified_drivers/linux-2.6/balloon/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif

unmodified_drivers/linux-2.6/blkfront/Kbuild

@@ -1,5 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m += xen-vbd.o
-
-xen-vbd-objs := blkfront.o vbd.o

unmodified_drivers/linux-2.6/blkfront/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif

unmodified_drivers/linux-2.6/compat-include/asm-generic/pgtable-nopmd.h

@@ -1,14 +0,0 @@
-#ifndef _PGTABLE_NOPMD_H
-#define _PGTABLE_NOPMD_H
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)
-#error "This version of Linux should not need compat pgtable-nopmd.h"
-#endif
-
-#define pud_t             pgd_t
-#define pud_offset(d, va)     d
-#define pud_none(pud)         0
-#define pud_present(pud)      1
-#define PTRS_PER_PUD          1
-
-#endif /* _PGTABLE_NOPMD_H */

unmodified_drivers/linux-2.6/compat-include/asm-generic/pgtable-nopud.h

@@ -1,15 +0,0 @@
-#ifndef _PGTABLE_NOPUD_H
-#define _PGTABLE_NOPUD_H
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)
-#error "This version of Linux should not need compat pgtable-nopud.h"
-#endif
-
-#define pud_t             pgd_t
-#define pud_offset(d, va)     d
-#define pud_none(pud)         0
-#define pud_present(pud)      1
-#define pud_bad(pud)          0
-#define PTRS_PER_PUD          1
-
-#endif /* _PGTABLE_NOPUD_H */

unmodified_drivers/linux-2.6/compat-include/linux/io.h

@@ -1,10 +0,0 @@
-#ifndef _LINUX_IO_H
-#define _LINUX_IO_H
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
-#error "This version of Linux should not need compat linux/io.h"
-#endif
-
-#include <asm/io.h>
-
-#endif

unmodified_drivers/linux-2.6/compat-include/linux/mutex.h

@@ -1,31 +0,0 @@
-/*
- * Copyright (c) 2006 Cisco Systems.  All rights reserved.
- *
- * This file is released under the GPLv2.
- */
-
-/* mutex compatibility for pre-2.6.16 kernels */
-
-#ifndef __LINUX_MUTEX_H
-#define __LINUX_MUTEX_H
-
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
-#error "This version of Linux should not need compat mutex.h"
-#endif
-
-#include <linux/version.h>
-#include <asm/semaphore.h>
-
-#define mutex semaphore
-#define DEFINE_MUTEX(foo) DECLARE_MUTEX(foo)
-#define mutex_init(foo) init_MUTEX(foo)
-#define mutex_lock(foo) down(foo)
-#define mutex_lock_interruptible(foo) down_interruptible(foo)
-/* this function follows the spin_trylock() convention, so        *
- * it is negated to the down_trylock() return values! Be careful  */
-#define mutex_trylock(foo) !down_trylock(foo)
-#define mutex_unlock(foo) up(foo)
-
-#endif /* __LINUX_MUTEX_H */

unmodified_drivers/linux-2.6/compat-include/linux/scatterlist.h

@@ -1,10 +0,0 @@
-#ifndef _LINUX_SCATTERLIST_H
-#define _LINUX_SCATTERLIST_H
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
-#error "This version of Linux should not need compat linux/scatterlist.h"
-#endif
-
-#include <asm/scatterlist.h>
-
-#endif /* _LINUX_SCATTERLIST_H */

unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h

@@ -1,183 +0,0 @@
-#ifndef COMPAT_INCLUDE_XEN_PLATFORM_COMPAT_H
-#define COMPAT_INCLUDE_XEN_PLATFORM_COMPAT_H
-
-#include <linux/version.h>
-#include <linux/spinlock.h>
-#include <asm/maddr.h>
-
-#if defined(__LINUX_COMPILER_H) && !defined(__always_inline)
-#define __always_inline inline
-#endif
-
-#if defined(__LINUX_SPINLOCK_H) && !defined(DEFINE_SPINLOCK)
-#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
-#endif
-
-#ifdef _LINUX_INIT_H
-
-#ifndef __init
-#define __init
-#endif
-
-#ifndef __devinit
-#define __devinit
-#define __devinitdata
-#endif
-
-#endif /* _LINUX_INIT_H */
-
-#if defined(__LINUX_CACHE_H) && !defined(__read_mostly)
-#define __read_mostly
-#endif
-
-#if defined(_LINUX_SKBUFF_H) && !defined(NET_IP_ALIGN)
-#define NET_IP_ALIGN 0
-#endif
-
-#if defined(_LINUX_SKBUFF_H) && !defined(CHECKSUM_HW)
-#define CHECKSUM_HW CHECKSUM_PARTIAL
-#endif
-
-#if defined(_LINUX_ERR_H) && !defined(IS_ERR_VALUE)
-#define IS_ERR_VALUE(x) unlikely((x) > (unsigned long)-1000L)
-#endif
-
-#if defined(_ASM_IA64_PGTABLE_H) && !defined(_PGTABLE_NOPUD_H)
-#include <asm-generic/pgtable-nopud.h>
-#endif
-
-/* Some kernels have this typedef backported so we cannot reliably
- * detect based on version number, hence we forcibly #define it.
- */
-#if defined(__LINUX_TYPES_H) || defined(__LINUX_GFP_H) || defined(_LINUX_KERNEL_H)
-#define gfp_t unsigned
-#endif
-
-#if defined(_LINUX_NOTIFIER_H) && !defined(ATOMIC_NOTIFIER_HEAD)
-#define ATOMIC_NOTIFIER_HEAD(name) struct notifier_block *name
-#define atomic_notifier_chain_register(chain,nb) notifier_chain_register(chain,nb)
-#define atomic_notifier_chain_unregister(chain,nb) notifier_chain_unregister(chain,nb)
-#define atomic_notifier_call_chain(chain,val,v) notifier_call_chain(chain,val,v)
-#endif
-
-#if defined(_LINUX_NOTIFIER_H) && !defined(BLOCKING_NOTIFIER_HEAD)
-#define BLOCKING_NOTIFIER_HEAD(name) struct notifier_block *name
-#define blocking_notifier_chain_register(chain,nb) notifier_chain_register(chain,nb)
-#define blocking_notifier_chain_unregister(chain,nb) notifier_chain_unregister(chain,nb)
-#define blocking_notifier_call_chain(chain,val,v) notifier_call_chain(chain,val,v)
-#endif
-
-#if defined(_LINUX_MM_H) && defined set_page_count
-#define init_page_count(page) set_page_count(page, 1)
-#endif
-
-#if defined(__LINUX_GFP_H) && !defined __GFP_NOMEMALLOC
-#define __GFP_NOMEMALLOC 0
-#endif
-
-#if defined(_LINUX_FS_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
-#define nonseekable_open(inode, filp) /* Nothing to do */
-#endif
-
-#if defined(_LINUX_MM_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
-unsigned long vmalloc_to_pfn(void *addr);
-#endif
-
-#if defined(__LINUX_COMPLETION_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
-unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout);
-#endif
-
-#if defined(_LINUX_SCHED_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
-signed long schedule_timeout_interruptible(signed long timeout);
-#endif
-
-#if defined(_LINUX_SLAB_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
-void *kzalloc(size_t size, int flags);
-#endif
-
-#if defined(_LINUX_BLKDEV_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
-#define end_that_request_last(req, uptodate) end_that_request_last(req)
-#endif
-
-#if defined(_LINUX_CAPABILITY_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
-#define capable(cap) (1)
-#endif
-
-#if defined(_LINUX_KERNEL_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
-extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
-       __attribute__ ((format (printf, 2, 3)));
-#endif
-
-#if defined(_LINUX_SYSRQ_H) && LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
-#define handle_sysrq(x,y,z) handle_sysrq(x,y)
-#endif
-
-#if defined(_PAGE_PRESENT) && !defined(_PAGE_NX)
-#define _PAGE_NX 0
-/*
- * This variable at present is referenced by netfront, but only in code that
- * is dead when running in hvm guests. To detect potential active uses of it
- * in the future, don't try to supply a 'valid' value here, so that any
- * mappings created with it will fault when accessed.
- */
-#define __supported_pte_mask ((maddr_t)0)
-#endif
-
-/* This code duplication is not ideal, but || does not seem to properly 
- *  short circuit in a #if condition.
- **/
-#if defined(_LINUX_NETDEVICE_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
-#if !defined(SLE_VERSION) 
-#define netif_tx_lock_bh(dev) spin_lock_bh(&(dev)->xmit_lock)
-#define netif_tx_unlock_bh(dev) spin_unlock_bh(&(dev)->xmit_lock)
-#elif SLE_VERSION_CODE < SLE_VERSION(10,1,0)
-#define netif_tx_lock_bh(dev) spin_lock_bh(&(dev)->xmit_lock)
-#define netif_tx_unlock_bh(dev) spin_unlock_bh(&(dev)->xmit_lock)
-#endif
-#endif
-
-#if defined(__LINUX_SEQLOCK_H) && !defined(DEFINE_SEQLOCK)
-#define DEFINE_SEQLOCK(x) seqlock_t x = SEQLOCK_UNLOCKED
-#endif
-
-/* Bug in RHEL4-U3: rw_lock_t is mistakenly defined in DEFINE_RWLOCK() macro */
-#if defined(__LINUX_SPINLOCK_H) && defined(DEFINE_RWLOCK)
-#define rw_lock_t rwlock_t
-#endif
-
-#if defined(__LINUX_SPINLOCK_H) && !defined(DEFINE_RWLOCK)
-#define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED
-#endif
-
-#if defined(_LINUX_INTERRUPT_H) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-/**
- *   RHEL4-U5 pulled back this feature into the older kernel 
- *   Since it is a typedef, and not a macro - detect this kernel via
- *   RHEL_VERSION
- */
-#if !defined(RHEL_VERSION) || (RHEL_VERSION == 4 && RHEL_UPDATE < 5)
-#if !defined(RHEL_MAJOR) || (RHEL_MAJOR == 4 && RHEL_MINOR < 5)
-typedef irqreturn_t (*irq_handler_t)(int, void *, struct pt_regs *);
-#endif
-#endif
-#endif
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
-#define setup_xen_features xen_setup_features
-#endif
-
-#ifndef atomic_cmpxchg
-#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
-#endif
-
-#ifdef sync_test_bit
-#define synch_change_bit		sync_change_bit
-#define synch_clear_bit			sync_clear_bit
-#define synch_set_bit			sync_set_bit
-#define synch_test_and_change_bit	sync_test_and_change_bit
-#define synch_test_and_clear_bit	sync_test_and_clear_bit
-#define synch_test_and_set_bit		sync_test_and_set_bit
-#define synch_test_bit			sync_test_bit
-#endif
-
-#endif

unmodified_drivers/linux-2.6/mkbuildtree

@@ -1,100 +0,0 @@
-#! /bin/sh
-
-if [ $1 ]; then
-    uname="$1"
-else
-    uname=`uname -m`
-    echo "Defaulting to this machine's architecture, $uname, for linking."
-    echo "This may be overridden on the command line (i386,x86_64,ia64)."
-fi
-
-C=$(cd $(dirname $0) && pwd)
-R=${C%/*/*}
-
-if [ -n "$XEN" -a -d "$XEN" ]; then
-  XEN=$(cd $XEN && pwd)
-else
-  XEN=$R/xen
-fi
-echo "Xen tree: $XEN"
-
-if [ -n "$XL" -a -d "$XL" ]; then
-  XL=$(cd $XL && pwd)
-else
-  XL=$R/linux-2.6.18-xen.hg
-fi
-echo "Linux tree: $XL"
-
-cd $C
-
-for d in $(find ${XL}/drivers/xen/ -mindepth 1 -maxdepth 1 -type d); do
-    test -d $(basename $d) || continue
-    lndir $d $(basename $d) > /dev/null 2>&1
-done
-
-ln -sf ${XL}/drivers/xen/core/gnttab.c platform-pci
-if [ -f ${XL}/drivers/xen/core/features.c ]; then
-    ln -sf ${XL}/drivers/xen/core/features.c platform-pci
-else
-    ln -sf ${XL}/drivers/xen/features.c platform-pci
-fi
-ln -sf ${XL}/drivers/xen/core/xen_proc.c xenbus
-ln -sf ${XL}/drivers/xen/core/reboot.c platform-pci
-
-mkdir -p include/asm include/xen
-
-lndir -silent ${XL}/include/xen include/xen
-ln -nsf ${XEN}/include/public include/xen/interface
-
-# Need to be quite careful here: we don't want the files we link in to
-# risk overriding the native Linux ones (in particular, system.h must
-# be native and not xenolinux).
-case "$uname" in
-i[34567]86|x86_64)
-    if [ -d ${XL}/arch/x86/include/mach-xen ]; then
-        ln -sf ${XL}/arch/x86/include/mach-xen/asm/hypervisor.h include/asm
-        ln -sf ${XL}/arch/x86/include/mach-xen/asm/hypercall*.h include/asm
-        ln -sf ${XL}/arch/x86/include/mach-xen/asm/synch_bitops*.h include/asm
-        ln -sf ${XL}/arch/x86/include/mach-xen/asm/maddr*.h include/asm
-        ln -sf ${XL}/arch/x86/include/mach-xen/asm/gnttab_dma.h include/asm
-        ln -sf ${XL}/arch/x86/lib/scrub.c balloon
-    elif [ -d ${XL}/include/asm-x86 ]; then
-        ln -sf ${XL}/include/asm-x86/mach-xen/asm/hypervisor.h include/asm
-        ln -sf ${XL}/include/asm-x86/mach-xen/asm/hypercall*.h include/asm
-        ln -sf ${XL}/include/asm-x86/mach-xen/asm/synch_bitops*.h include/asm
-        ln -sf ${XL}/include/asm-x86/mach-xen/asm/maddr*.h include/asm
-        ln -sf ${XL}/include/asm-x86/mach-xen/asm/gnttab_dma.h include/asm
-        ln -sf ${XL}/arch/x86/lib/scrub.c balloon
-    else
-        if [ $uname = x86_64 ]; then
-            mkdir -p include/asm-i386
-            lndir -silent ${XL}/include/asm-i386 include/asm-i386
-        else
-            uname=i386
-        fi
-        ln -sf ${XL}/include/asm-$uname/mach-xen/asm/hypervisor.h include/asm
-        ln -sf ${XL}/include/asm-$uname/mach-xen/asm/hypercall.h include/asm
-        ln -sf ${XL}/include/asm-$uname/mach-xen/asm/synch_bitops.h include/asm
-        ln -sf ${XL}/include/asm-$uname/mach-xen/asm/maddr.h include/asm
-        ln -sf ${XL}/include/asm-$uname/mach-xen/asm/gnttab_dma.h include/asm
-    fi
-  ;;
-"ia64")
-    ln -sf ${XL}/include/asm-ia64/hypervisor.h include/asm
-    ln -sf ${XL}/include/asm-ia64/hypercall.h include/asm
-    ln -sf ${XL}/include/asm-ia64/synch_bitops.h include/asm
-    ln -sf ${XL}/include/asm-ia64/maddr.h include/asm
-    ln -sf ${XL}/include/asm-ia64/gnttab_dma.h include/asm
-    mkdir -p include/asm/xen
-    ln -sf ${XL}/include/asm-ia64/xen/xcom_hcall.h include/asm/xen
-    ln -sf ${XL}/include/asm-ia64/xen/xencomm.h include/asm/xen
-    ln -sf ${XL}/arch/ia64/xen/xcom_hcall.c platform-pci/
-    ln -sf ${XL}/arch/ia64/xen/xcom_asm.S platform-pci/
-    ln -sf ${XL}/arch/ia64/xen/xencomm.c platform-pci/xencomm_arch.c
-    ln -sf ${XL}/drivers/xen/core/xencomm.c platform-pci
-  ;;
-*)
-    echo unknown architecture $uname
-    exit 1
-  ;;
-esac

unmodified_drivers/linux-2.6/netfront/Kbuild

@@ -1,5 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m  = xen-vnif.o
-xen-vnif-objs	:= netfront.o
-xen-vnif-objs	+= accel.o

unmodified_drivers/linux-2.6/netfront/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif

unmodified_drivers/linux-2.6/overrides.mk

@@ -1,18 +0,0 @@
-# Hack: we need to use the config which was used to build the kernel,
-# except that that won't have the right headers etc., so duplicate
-# some of the mach-xen infrastructure in here.
-#
-# (i.e. we need the native config for things like -mregparm, but
-# a Xen kernel to find the right headers)
-_XEN_CPPFLAGS += -D__XEN_INTERFACE_VERSION__=0x00030205
-_XEN_CPPFLAGS += -DCONFIG_XEN_COMPAT=0xffffff
-_XEN_CPPFLAGS += -I$(M)/include -I$(M)/compat-include -DHAVE_XEN_PLATFORM_COMPAT_H
-ifeq ($(ARCH),ia64)
-  _XEN_CPPFLAGS += -DCONFIG_VMX_GUEST
-endif
-
-_XEN_CPPFLAGS += -include $(wildcard $(objtree)/include/*/autoconf.h)
-
-EXTRA_CFLAGS += $(_XEN_CPPFLAGS)
-EXTRA_AFLAGS += $(_XEN_CPPFLAGS)
-CPPFLAGS := -I$(M)/include $(CPPFLAGS)

unmodified_drivers/linux-2.6/platform-pci/Kbuild

@@ -1,22 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m := xen-platform-pci.o
-
-EXTRA_CFLAGS += -I$(M)/platform-pci
-
-xen-platform-pci-objs := evtchn.o platform-pci.o gnttab.o xen_support.o
-xen-platform-pci-objs += features.o platform-compat.o
-xen-platform-pci-objs += reboot.o machine_reboot.o
-xen-platform-pci-objs += panic-handler.o
-
-xen-platform-pci-objs += ../xenbus/xenbus_comms.o
-xen-platform-pci-objs += ../xenbus/xenbus_xs.o
-xen-platform-pci-objs += ../xenbus/xenbus_probe.o 
-xen-platform-pci-objs += ../xenbus/xenbus_dev.o 
-xen-platform-pci-objs += ../xenbus/xenbus_client.o 
-xen-platform-pci-objs += ../xenbus/xen_proc.o
-
-# Can we do better ?
-ifeq ($(ARCH),ia64)
-  xen-platform-pci-objs += xencomm.o xencomm_arch.o xcom_hcall.o xcom_asm.o
-endif

unmodified_drivers/linux-2.6/platform-pci/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif

unmodified_drivers/linux-2.6/platform-pci/evtchn.c

@@ -1,362 +0,0 @@
-/******************************************************************************
- * evtchn.c
- *
- * A simplified event channel for para-drivers in unmodified linux
- *
- * Copyright (c) 2002-2005, K A Fraser
- * Copyright (c) 2005, Intel Corporation <xiaofeng.ling@intel.com>
- *
- * This file may be distributed separately from the Linux kernel, or
- * incorporated into other software packages, subject to the following license:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this source file (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 <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <xen/evtchn.h>
-#include <xen/interface/hvm/ioreq.h>
-#include <xen/features.h>
-#include "platform-pci.h"
-
-#ifdef HAVE_XEN_PLATFORM_COMPAT_H
-#include <xen/platform-compat.h>
-#endif
-
-void *shared_info_area;
-
-#define is_valid_evtchn(x)	((x) != 0)
-#define evtchn_from_irq(x)	(irq_evtchn[irq].evtchn)
-
-static struct {
-	spinlock_t lock;
-	irq_handler_t handler;
-	void *dev_id;
-	int evtchn;
-	int close:1; /* close on unbind_from_irqhandler()? */
-	int inuse:1;
-	int in_handler:1;
-} irq_evtchn[256];
-static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
-	[0 ...  NR_EVENT_CHANNELS-1] = -1 };
-
-static DEFINE_SPINLOCK(irq_alloc_lock);
-
-static int alloc_xen_irq(void)
-{
-	static int warned;
-	int irq;
-
-	spin_lock(&irq_alloc_lock);
-
-	for (irq = 1; irq < ARRAY_SIZE(irq_evtchn); irq++) {
-		if (irq_evtchn[irq].inuse) 
-			continue;
-		irq_evtchn[irq].inuse = 1;
-		spin_unlock(&irq_alloc_lock);
-		return irq;
-	}
-
-	if (!warned) {
-		warned = 1;
-		printk(KERN_WARNING "No available IRQ to bind to: "
-		       "increase irq_evtchn[] size in evtchn.c.\n");
-	}
-
-	spin_unlock(&irq_alloc_lock);
-
-	return -ENOSPC;
-}
-
-static void free_xen_irq(int irq)
-{
-	spin_lock(&irq_alloc_lock);
-	irq_evtchn[irq].inuse = 0;
-	spin_unlock(&irq_alloc_lock);
-}
-
-int irq_to_evtchn_port(int irq)
-{
-	return irq_evtchn[irq].evtchn;
-}
-EXPORT_SYMBOL(irq_to_evtchn_port);
-
-void mask_evtchn(int port)
-{
-	shared_info_t *s = shared_info_area;
-	synch_set_bit(port, &s->evtchn_mask[0]);
-}
-EXPORT_SYMBOL(mask_evtchn);
-
-void unmask_evtchn(int port)
-{
-	evtchn_unmask_t op = { .port = port };
-	VOID(HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &op));
-}
-EXPORT_SYMBOL(unmask_evtchn);
-
-int bind_listening_port_to_irqhandler(
-	unsigned int remote_domain,
-	irq_handler_t handler,
-	unsigned long irqflags,
-	const char *devname,
-	void *dev_id)
-{
-	struct evtchn_alloc_unbound alloc_unbound;
-	int err, irq;
-
-	irq = alloc_xen_irq();
-	if (irq < 0)
-		return irq;
-
-	spin_lock_irq(&irq_evtchn[irq].lock);
-
-	alloc_unbound.dom        = DOMID_SELF;
-	alloc_unbound.remote_dom = remote_domain;
-	err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,
-					  &alloc_unbound);
-	if (err) {
-		spin_unlock_irq(&irq_evtchn[irq].lock);
-		free_xen_irq(irq);
-		return err;
-	}
-
-	irq_evtchn[irq].handler = handler;
-	irq_evtchn[irq].dev_id  = dev_id;
-	irq_evtchn[irq].evtchn  = alloc_unbound.port;
-	irq_evtchn[irq].close   = 1;
-
-	evtchn_to_irq[alloc_unbound.port] = irq;
-
-	unmask_evtchn(alloc_unbound.port);
-
-	spin_unlock_irq(&irq_evtchn[irq].lock);
-
-	return irq;
-}
-EXPORT_SYMBOL(bind_listening_port_to_irqhandler);
-
-int bind_caller_port_to_irqhandler(
-	unsigned int caller_port,
-	irq_handler_t handler,
-	unsigned long irqflags,
-	const char *devname,
-	void *dev_id)
-{
-	int irq;
-
-	irq = alloc_xen_irq();
-	if (irq < 0)
-		return irq;
-
-	spin_lock_irq(&irq_evtchn[irq].lock);
-
-	irq_evtchn[irq].handler = handler;
-	irq_evtchn[irq].dev_id  = dev_id;
-	irq_evtchn[irq].evtchn  = caller_port;
-	irq_evtchn[irq].close   = 0;
-
-	evtchn_to_irq[caller_port] = irq;
-
-	unmask_evtchn(caller_port);
-
-	spin_unlock_irq(&irq_evtchn[irq].lock);
-
-	return irq;
-}
-EXPORT_SYMBOL(bind_caller_port_to_irqhandler);
-
-void unbind_from_irqhandler(unsigned int irq, void *dev_id)
-{
-	int evtchn;
-
-	spin_lock_irq(&irq_evtchn[irq].lock);
-
-	evtchn = evtchn_from_irq(irq);
-
-	if (is_valid_evtchn(evtchn)) {
-		evtchn_to_irq[evtchn] = -1;
-		mask_evtchn(evtchn);
-		if (irq_evtchn[irq].close) {
-			struct evtchn_close close = { .port = evtchn };
-			if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close))
-				BUG();
-		}
-	}
-
-	irq_evtchn[irq].handler = NULL;
-	irq_evtchn[irq].evtchn  = 0;
-
-	spin_unlock_irq(&irq_evtchn[irq].lock);
-
-	while (irq_evtchn[irq].in_handler)
-		cpu_relax();
-
-	free_xen_irq(irq);
-}
-EXPORT_SYMBOL(unbind_from_irqhandler);
-
-void notify_remote_via_irq(int irq)
-{
-	int evtchn;
-
-	evtchn = evtchn_from_irq(irq);
-	if (is_valid_evtchn(evtchn))
-		notify_remote_via_evtchn(evtchn);
-}
-EXPORT_SYMBOL(notify_remote_via_irq);
-
-static DEFINE_PER_CPU(unsigned int, last_processed_l1i) = { BITS_PER_LONG - 1 };
-static DEFINE_PER_CPU(unsigned int, last_processed_l2i) = { BITS_PER_LONG - 1 };
-
-static inline unsigned long active_evtchns(unsigned int cpu, shared_info_t *sh,
-						unsigned int idx)
-{
-	return (sh->evtchn_pending[idx] & ~sh->evtchn_mask[idx]);
-}
-
-static irqreturn_t evtchn_interrupt(int irq, void *dev_id
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-				    , struct pt_regs *regs
-#else
-# define handler(irq, dev_id, regs) handler(irq, dev_id)
-#endif
-				    )
-{
-	unsigned int l1i, l2i, port;
-	unsigned long masked_l1, masked_l2;
-	/* XXX: All events are bound to vcpu0 but irq may be redirected. */
-	int cpu = 0; /*smp_processor_id();*/
-	irq_handler_t handler;
-	shared_info_t *s = shared_info_area;
-	vcpu_info_t *v = &s->vcpu_info[cpu];
-	unsigned long l1, l2;
-
-	v->evtchn_upcall_pending = 0;
-
-#ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */
-	/* Clear master flag /before/ clearing selector flag. */
-	wmb();
-#endif
-	l1 = xchg(&v->evtchn_pending_sel, 0);
-
-	l1i = per_cpu(last_processed_l1i, cpu);
-	l2i = per_cpu(last_processed_l2i, cpu);
-
-	while (l1 != 0) {
-
-		l1i = (l1i + 1) % BITS_PER_LONG;
-		masked_l1 = l1 & ((~0UL) << l1i);
-
-		if (masked_l1 == 0) { /* if we masked out all events, wrap around to the beginning */
-			l1i = BITS_PER_LONG - 1;
-			l2i = BITS_PER_LONG - 1;
-			continue;
-		}
-		l1i = __ffs(masked_l1);
-
-		do {
-			l2 = active_evtchns(cpu, s, l1i);
-
-			l2i = (l2i + 1) % BITS_PER_LONG;
-			masked_l2 = l2 & ((~0UL) << l2i);
-
-			if (masked_l2 == 0) { /* if we masked out all events, move on */
-				l2i = BITS_PER_LONG - 1;
-				break;
-			}
-			l2i = __ffs(masked_l2);
-
-			/* process port */
-			port = (l1i * BITS_PER_LONG) + l2i;
-			synch_clear_bit(port, &s->evtchn_pending[0]);
-
-			irq = evtchn_to_irq[port];
-			if (irq < 0)
-				continue;
-
-			spin_lock(&irq_evtchn[irq].lock);
-			handler = irq_evtchn[irq].handler;
-			dev_id  = irq_evtchn[irq].dev_id;
-			if (unlikely(handler == NULL)) {
-				printk("Xen IRQ%d (port %d) has no handler!\n",
-				       irq, port);
-				spin_unlock(&irq_evtchn[irq].lock);
-				continue;
-			}
-			irq_evtchn[irq].in_handler = 1;
-			spin_unlock(&irq_evtchn[irq].lock);
-
-			local_irq_enable();
-			handler(irq, irq_evtchn[irq].dev_id, regs);
-			local_irq_disable();
-
-			spin_lock(&irq_evtchn[irq].lock);
-			irq_evtchn[irq].in_handler = 0;
-			spin_unlock(&irq_evtchn[irq].lock);
-
-			/* if this is the final port processed, we'll pick up here+1 next time */
-			per_cpu(last_processed_l1i, cpu) = l1i;
-			per_cpu(last_processed_l2i, cpu) = l2i;
-
-		} while (l2i != BITS_PER_LONG - 1);
-
-		l2 = active_evtchns(cpu, s, l1i);
-		if (l2 == 0) /* we handled all ports, so we can clear the selector bit */
-			l1 &= ~(1UL << l1i);
-	}
-
-	return IRQ_HANDLED;
-}
-
-void irq_resume(void)
-{
-	int evtchn, irq;
-
-	for (evtchn = 0; evtchn < NR_EVENT_CHANNELS; evtchn++) {
-		mask_evtchn(evtchn);
-		evtchn_to_irq[evtchn] = -1;
-	}
-
-	for (irq = 0; irq < ARRAY_SIZE(irq_evtchn); irq++)
-		irq_evtchn[irq].evtchn = 0;
-}
-
-int xen_irq_init(struct pci_dev *pdev)
-{
-	int irq;
-
-	for (irq = 0; irq < ARRAY_SIZE(irq_evtchn); irq++)
-		spin_lock_init(&irq_evtchn[irq].lock);
-
-	return request_irq(pdev->irq, evtchn_interrupt,
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
-			   SA_SHIRQ | SA_SAMPLE_RANDOM | SA_INTERRUPT,
-#else
-#ifdef IRQF_SAMPLE_RANDOM
-			   IRQF_SAMPLE_RANDOM |
-#endif
-#ifdef IRQF_DISABLED
-			   IRQF_DISABLED |
-#endif
-			   IRQF_SHARED,
-#endif
-			   "xen-platform-pci", pdev);
-}

unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c

@@ -1,114 +0,0 @@
-#include <linux/cpumask.h>
-#include <linux/preempt.h>
-#include <xen/evtchn.h>
-#include <xen/gnttab.h>
-#include <xen/xenbus.h>
-#include "platform-pci.h"
-#include <asm/hypervisor.h>
-
-struct ap_suspend_info {
-	int      do_spin;
-	atomic_t nr_spinning;
-};
-
-#ifdef CONFIG_SMP
-
-/*
- * Spinning prevents, for example, APs touching grant table entries while
- * the shared grant table is not mapped into the address space imemdiately
- * after resume.
- */
-static void ap_suspend(void *_info)
-{
-	struct ap_suspend_info *info = _info;
-
-	BUG_ON(!irqs_disabled());
-
-	atomic_inc(&info->nr_spinning);
-	mb();
-
-	while (info->do_spin)
-		cpu_relax();
-
-	mb();
-	atomic_dec(&info->nr_spinning);
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
-#define initiate_ap_suspend(i)	smp_call_function(ap_suspend, i, 0, 0)
-#else
-#define initiate_ap_suspend(i)	smp_call_function(ap_suspend, i, 0)
-#endif
-
-#else /* !defined(CONFIG_SMP) */
-
-#define initiate_ap_suspend(i)	0
-
-#endif
-
-static int bp_suspend(void)
-{
-	int suspend_cancelled;
-
-	BUG_ON(!irqs_disabled());
-
-	suspend_cancelled = HYPERVISOR_suspend(0);
-
-	if (!suspend_cancelled) {
-		platform_pci_resume();
-		gnttab_resume();
-		irq_resume();
-	}
-
-	return suspend_cancelled;
-}
-
-int __xen_suspend(int fast_suspend, void (*resume_notifier)(int))
-{
-	int err, suspend_cancelled, nr_cpus;
-	struct ap_suspend_info info;
-
-	xenbus_suspend();
-
-	preempt_disable();
-
-	/* Prevent any races with evtchn_interrupt() handler. */
-	disable_irq(xen_platform_pdev->irq);
-
-	info.do_spin = 1;
-	atomic_set(&info.nr_spinning, 0);
-	smp_mb();
-
-	nr_cpus = num_online_cpus() - 1;
-
-	err = initiate_ap_suspend(&info);
-	if (err < 0) {
-		preempt_enable();
-		xenbus_suspend_cancel();
-		return err;
-	}
-
-	while (atomic_read(&info.nr_spinning) != nr_cpus)
-		cpu_relax();
-
-	local_irq_disable();
-	suspend_cancelled = bp_suspend();
-	resume_notifier(suspend_cancelled);
-	local_irq_enable();
-
-	smp_mb();
-	info.do_spin = 0;
-	while (atomic_read(&info.nr_spinning) != 0)
-		cpu_relax();
-
-	enable_irq(xen_platform_pdev->irq);
-
-	preempt_enable();
-
-	if (!suspend_cancelled)
-		xenbus_resume();
-	else
-		xenbus_suspend_cancel();
-
-	return 0;
-}

unmodified_drivers/linux-2.6/platform-pci/panic-handler.c

@@ -1,42 +0,0 @@
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/notifier.h>
-#include <asm/hypervisor.h>
-
-#ifdef HAVE_XEN_PLATFORM_COMPAT_H
-#include <xen/platform-compat.h>
-#endif
-
-MODULE_LICENSE("GPL");
-
-#ifdef __ia64__
-static void
-xen_panic_hypercall(struct unw_frame_info *info, void *arg)
-{
-	current->thread.ksp = (__u64)info->sw - 16;
-	HYPERVISOR_shutdown(SHUTDOWN_crash);
-	/* we're never actually going to get here... */
-}
-#endif
-
-static int
-xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
-{
-#ifdef __ia64__
-	unw_init_running(xen_panic_hypercall, NULL);
-#else /* !__ia64__ */
-	HYPERVISOR_shutdown(SHUTDOWN_crash);
-#endif
-	/* we're never actually going to get here... */
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block xen_panic_block = {
-	.notifier_call = xen_panic_event
-};
-
-int xen_panic_handler_init(void)
-{
-	atomic_notifier_chain_register(&panic_notifier_list, &xen_panic_block);
-	return 0;
-}

unmodified_drivers/linux-2.6/platform-pci/platform-compat.c

@@ -1,147 +0,0 @@
-#include <linux/version.h>
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-
-#include <xen/platform-compat.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7)
-static int system_state = 1;
-EXPORT_SYMBOL(system_state);
-#endif
-
-void ctrl_alt_del(void)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
-	kill_proc(1, SIGINT, 1); /* interrupt init */
-#else
-	kill_cad_pid(SIGINT, 1);
-#endif
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
-size_t strcspn(const char *s, const char *reject)
-{
-        const char *p;
-        const char *r;
-        size_t count = 0;
-
-        for (p = s; *p != '\0'; ++p) {
-                for (r = reject; *r != '\0'; ++r) {
-                        if (*p == *r)
-                                return count;
-                }
-                ++count;
-        }
-
-        return count;
-}
-EXPORT_SYMBOL(strcspn);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
-/*
- * Map a vmalloc()-space virtual address to the physical page frame number.
- */
-unsigned long vmalloc_to_pfn(void * vmalloc_addr)
-{
-        return page_to_pfn(vmalloc_to_page(vmalloc_addr));
-}
-EXPORT_SYMBOL(vmalloc_to_pfn);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
-unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout)
-{
-        might_sleep();
-
-        spin_lock_irq(&x->wait.lock);
-        if (!x->done) {
-                DECLARE_WAITQUEUE(wait, current);
-
-                wait.flags |= WQ_FLAG_EXCLUSIVE;
-                __add_wait_queue_tail(&x->wait, &wait);
-                do {
-                        __set_current_state(TASK_UNINTERRUPTIBLE);
-                        spin_unlock_irq(&x->wait.lock);
-                        timeout = schedule_timeout(timeout);
-                        spin_lock_irq(&x->wait.lock);
-                        if (!timeout) {
-                                __remove_wait_queue(&x->wait, &wait);
-                                goto out;
-                        }
-                } while (!x->done);
-                __remove_wait_queue(&x->wait, &wait);
-        }
-        x->done--;
-out:
-        spin_unlock_irq(&x->wait.lock);
-        return timeout;
-}
-EXPORT_SYMBOL(wait_for_completion_timeout);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,12)
-/*
-    fake do_exit using complete_and_exit
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
-asmlinkage NORET_TYPE void do_exit(long code)
-#else
-fastcall NORET_TYPE void do_exit(long code)
-#endif
-{
-    complete_and_exit(NULL, code);
-}
-EXPORT_SYMBOL_GPL(do_exit);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
-signed long schedule_timeout_interruptible(signed long timeout)
-{
-	__set_current_state(TASK_INTERRUPTIBLE);
-	return schedule_timeout(timeout);
-}
-EXPORT_SYMBOL(schedule_timeout_interruptible);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
-/**
- * kzalloc - allocate memory. The memory is set to zero.
- * @size: how many bytes of memory are required.
- * @flags: the type of memory to allocate.
- */
-void *kzalloc(size_t size, int flags)
-{
-	void *ret = kmalloc(size, flags);
-	if (ret)
-		memset(ret, 0, size);
-	return ret;
-}
-EXPORT_SYMBOL(kzalloc);
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
-/* Simplified asprintf. */
-char *kasprintf(gfp_t gfp, const char *fmt, ...)
-{
-	va_list ap;
-	unsigned int len;
-	char *p, dummy[1];
-
-	va_start(ap, fmt);
-	len = vsnprintf(dummy, 0, fmt, ap);
-	va_end(ap);
-
-	p = kmalloc(len + 1, gfp);
-	if (!p)
-		return NULL;
-	va_start(ap, fmt);
-	vsprintf(p, fmt, ap);
-	va_end(ap);
-	return p;
-}
-EXPORT_SYMBOL(kasprintf);
-#endif

unmodified_drivers/linux-2.6/platform-pci/platform-pci.c

@@ -1,531 +0,0 @@
-/******************************************************************************
- * platform-pci.c
- * 
- * Xen platform PCI device driver
- * Copyright (c) 2005, Intel Corporation.
- * Copyright (c) 2007, XenSource Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/crash_dump.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/version.h>
-#include <linux/interrupt.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/hypervisor.h>
-#include <asm/pgtable.h>
-#include <xen/interface/memory.h>
-#include <xen/interface/hvm/params.h>
-#include <xen/features.h>
-#include <xen/evtchn.h>
-#ifdef __ia64__
-#include <asm/xen/xencomm.h>
-#endif
-
-#include "platform-pci.h"
-
-#ifdef HAVE_XEN_PLATFORM_COMPAT_H
-#include <xen/platform-compat.h>
-#endif
-
-#define DRV_NAME    "xen-platform-pci"
-#define DRV_VERSION "0.10"
-#define DRV_RELDATE "03/03/2005"
-
-static int max_hypercall_stub_pages, nr_hypercall_stub_pages;
-char *hypercall_stubs;
-EXPORT_SYMBOL(hypercall_stubs);
-
-MODULE_AUTHOR("ssmith@xensource.com");
-MODULE_DESCRIPTION("Xen platform PCI device");
-MODULE_LICENSE("GPL");
-
-/* NB. [aux-]ide-disks options do not unplug IDE CD-ROM drives. */
-/* NB. aux-ide-disks is equiv to ide-disks except ignores primary master. */
-static char *dev_unplug;
-module_param(dev_unplug, charp, 0644);
-MODULE_PARM_DESC(dev_unplug, "Emulated devices to unplug: "
-		 "[all,][ide-disks,][aux-ide-disks,][nics,][never] (default is 'all')\n");
-
-struct pci_dev *xen_platform_pdev;
-
-static unsigned long shared_info_frame;
-static uint64_t callback_via;
-
-static int __devinit init_xen_info(void)
-{
-	struct xen_add_to_physmap xatp;
-	extern void *shared_info_area;
-
-#ifdef __ia64__
-	xencomm_initialize();
-#endif
-
-	setup_xen_features();
-
-	shared_info_frame = alloc_xen_mmio(PAGE_SIZE) >> PAGE_SHIFT;
-	xatp.domid = DOMID_SELF;
-	xatp.idx = 0;
-	xatp.space = XENMAPSPACE_shared_info;
-	xatp.gpfn = shared_info_frame;
-	if (HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp))
-		BUG();
-
-	shared_info_area =
-		ioremap(shared_info_frame << PAGE_SHIFT, PAGE_SIZE);
-	if (shared_info_area == NULL)
-		panic("can't map shared info\n");
-
-	return 0;
-}
-
-static unsigned long platform_mmio;
-static unsigned long platform_mmio_alloc;
-static unsigned long platform_mmiolen;
-
-unsigned long alloc_xen_mmio(unsigned long len)
-{
-	unsigned long addr;
-
-	addr = platform_mmio + platform_mmio_alloc;
-	platform_mmio_alloc += len;
-	BUG_ON(platform_mmio_alloc > platform_mmiolen);
-
-	return addr;
-}
-
-#ifndef __ia64__
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
-static uint32_t xen_cpuid_base(void)
-{
-	uint32_t base, eax, ebx, ecx, edx;
-	char signature[13];
-
-	for (base = 0x40000000; base < 0x40010000; base += 0x100) {
-		cpuid(base, &eax, &ebx, &ecx, &edx);
-		*(uint32_t*)(signature + 0) = ebx;
-		*(uint32_t*)(signature + 4) = ecx;
-		*(uint32_t*)(signature + 8) = edx;
-		signature[12] = 0;
-
-		if (!strcmp("XenVMMXenVMM", signature) && ((eax - base) >= 2))
-			return base;
-	}
-
-	return 0;
-}
-#endif
-
-static int init_hypercall_stubs(void)
-{
-	uint32_t eax, ebx, ecx, edx, pages, msr, i, base;
-
-	base = xen_cpuid_base();
-	if (base == 0) {
-		printk(KERN_WARNING
-		       "Detected Xen platform device but not Xen VMM?\n");
-		return -EINVAL;
-	}
-
-	cpuid(base + 1, &eax, &ebx, &ecx, &edx);
-
-	printk(KERN_INFO "Xen version %d.%d.\n", eax >> 16, eax & 0xffff);
-
-	/*
-	 * Find largest supported number of hypercall pages.
-	 * We'll create as many as possible up to this number.
-	 */
-	cpuid(base + 2, &pages, &msr, &ecx, &edx);
-
-	/*
-	 * Use __vmalloc() because vmalloc_exec() is not an exported symbol.
-	 * PAGE_KERNEL_EXEC also is not exported, hence we use PAGE_KERNEL.
-	 * hypercall_stubs = vmalloc_exec(pages * PAGE_SIZE);
-	 */
-	while (pages > 0) {
-		hypercall_stubs = __vmalloc(
-			pages * PAGE_SIZE,
-			GFP_KERNEL | __GFP_HIGHMEM,
-			__pgprot(__PAGE_KERNEL & ~_PAGE_NX));
-		if (hypercall_stubs != NULL)
-			break;
-		pages--; /* vmalloc failed: try one fewer pages */
-	}
-
-	if (hypercall_stubs == NULL)
-		return -ENOMEM;
-
-	for (i = 0; i < pages; i++) {
-		unsigned long pfn;
-		pfn = vmalloc_to_pfn((char *)hypercall_stubs + i*PAGE_SIZE);
-		wrmsrl(msr, ((u64)pfn << PAGE_SHIFT) + i);
-	}
-
-	nr_hypercall_stub_pages = pages;
-	max_hypercall_stub_pages = pages;
-
-	printk(KERN_INFO "Hypercall area is %u pages.\n", pages);
-
-	return 0;
-}
-
-static void resume_hypercall_stubs(void)
-{
-	uint32_t base, ecx, edx, pages, msr, i;
-
-	base = xen_cpuid_base();
-	BUG_ON(base == 0);
-
-	cpuid(base + 2, &pages, &msr, &ecx, &edx);
-
-	if (pages > max_hypercall_stub_pages)
-		pages = max_hypercall_stub_pages;
-
-	for (i = 0; i < pages; i++) {
-		unsigned long pfn;
-		pfn = vmalloc_to_pfn((char *)hypercall_stubs + i*PAGE_SIZE);
-		wrmsrl(msr, ((u64)pfn << PAGE_SHIFT) + i);
-	}
-
-	nr_hypercall_stub_pages = pages;
-}
-
-#else /* __ia64__ */
-
-#define init_hypercall_stubs()		(0)
-#define resume_hypercall_stubs()	((void)0)
-
-#endif
-
-static uint64_t get_callback_via(struct pci_dev *pdev)
-{
-	u8 pin;
-	int irq;
-
-#ifdef __ia64__
-	for (irq = 0; irq < 16; irq++) {
-		if (isa_irq_to_vector(irq) == pdev->irq)
-			return irq; /* ISA IRQ */
-	}
-#else /* !__ia64__ */
-	irq = pdev->irq;
-	if (irq < 16)
-		return irq; /* ISA IRQ */
-#endif
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
-	pin = pdev->pin;
-#else
-	pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
-#endif
-
-	/* We don't know the GSI. Specify the PCI INTx line instead. */
-	return (((uint64_t)0x01 << 56) | /* PCI INTx identifier */
-		((uint64_t)pci_domain_nr(pdev->bus) << 32) |
-		((uint64_t)pdev->bus->number << 16) |
-		((uint64_t)(pdev->devfn & 0xff) << 8) |
-		((uint64_t)(pin - 1) & 3));
-}
-
-static int set_callback_via(uint64_t via)
-{
-	struct xen_hvm_param a;
-
-	a.domid = DOMID_SELF;
-	a.index = HVM_PARAM_CALLBACK_IRQ;
-	a.value = via;
-	return HYPERVISOR_hvm_op(HVMOP_set_param, &a);
-}
-
-int xen_irq_init(struct pci_dev *pdev);
-int xenbus_init(void);
-int xen_reboot_init(void);
-int xen_panic_handler_init(void);
-int gnttab_init(void);
-
-#define XEN_IOPORT_BASE 0x10
-
-#define XEN_IOPORT_PLATFLAGS	(XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
-#define XEN_IOPORT_MAGIC	(XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
-#define XEN_IOPORT_UNPLUG	(XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
-#define XEN_IOPORT_DRVVER	(XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
-
-#define XEN_IOPORT_SYSLOG	(XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
-#define XEN_IOPORT_PROTOVER	(XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
-#define XEN_IOPORT_PRODNUM	(XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
-
-#define XEN_IOPORT_MAGIC_VAL 0x49d2
-#define XEN_IOPORT_LINUX_PRODNUM 0xffff /* NB: register a proper one */
-#define XEN_IOPORT_LINUX_DRVVER  ((LINUX_VERSION_CODE << 8) + 0x0)
-
-#define UNPLUG_ALL_IDE_DISKS 1
-#define UNPLUG_ALL_NICS 2
-#define UNPLUG_AUX_IDE_DISKS 4
-#define UNPLUG_ALL 7
-
-static short unplug_value;
-static void unplug_devices(void)
-{
-	outw(unplug_value, XEN_IOPORT_UNPLUG);
-}
-
-static int check_platform_magic(struct device *dev, long ioaddr, long iolen)
-{
-	short magic, unplug = 0;
-	char protocol, *p, *q, *err;
-
-	/* Unconditionally unplug everything */
-	if (!dev_unplug)
-		unplug = UNPLUG_ALL;
-
-	for (p = dev_unplug; p; p = q) {
-		q = strchr(dev_unplug, ',');
-		if (q)
-			*q++ = '\0';
-		if (!strcmp(p, "all"))
-			unplug |= UNPLUG_ALL;
-		else if (!strcmp(p, "ide-disks"))
-			unplug |= UNPLUG_ALL_IDE_DISKS;
-		else if (!strcmp(p, "aux-ide-disks"))
-			unplug |= UNPLUG_AUX_IDE_DISKS;
-		else if (!strcmp(p, "nics"))
-			unplug |= UNPLUG_ALL_NICS;
-		else if (!strcmp(p, "never"))
-			unplug = 0;
-		else
-			dev_warn(dev, "unrecognised option '%s' "
-				 "in module parameter 'dev_unplug'\n", p);
-	}
-	unplug_value = unplug;
-
-	if (iolen < 0x16) {
-		err = "backend too old";
-		goto no_dev;
-	}
-
-	magic = inw(XEN_IOPORT_MAGIC);
-
-	if (magic != XEN_IOPORT_MAGIC_VAL) {
-		err = "unrecognised magic value";
-		goto no_dev;
-	}
-
-	protocol = inb(XEN_IOPORT_PROTOVER);
-
-	dev_info(dev, "I/O protocol version %d\n", protocol);
-
-	switch (protocol) {
-	case 1:
-		outw(XEN_IOPORT_LINUX_PRODNUM, XEN_IOPORT_PRODNUM);
-		outl(XEN_IOPORT_LINUX_DRVVER, XEN_IOPORT_DRVVER);
-		if (inw(XEN_IOPORT_MAGIC) != XEN_IOPORT_MAGIC_VAL) {
-			dev_err(dev, "blacklisted by host\n");
-			return -ENODEV;
-		}
-		/* Fall through */
-	case 0:
-		unplug_devices();
-		break;
-	default:
-		err = "unknown I/O protocol version";
-		goto no_dev;
-	}
-
-	return 0;
-
- no_dev:
-	dev_warn(dev, "failed backend handshake: %s\n", err);
-	if (!unplug)
-		return 0;
-	dev_err(dev, "failed to execute specified dev_unplug options!\n");
-	return -ENODEV;
-}
-
-#ifdef HAVE_OLDMEM_PFN_IS_RAM
-static int xen_oldmem_pfn_is_ram(unsigned long pfn)
-{
-	struct xen_hvm_get_mem_type a;
-	int ret;
-
-	a.domid = DOMID_SELF;
-	a.pfn = pfn;
-	if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a))
-		return -ENXIO;
-
-	switch (a.mem_type) {
-		case HVMMEM_mmio_dm:
-			ret = 0;
-			break;
-		case HVMMEM_ram_rw:
-		case HVMMEM_ram_ro:
-		default:
-			ret = 1;
-			break;
-	}
-
-	return ret;
-}
-#endif
-
-static int __devinit platform_pci_init(struct pci_dev *pdev,
-				       const struct pci_device_id *ent)
-{
-	int i, ret;
-	long ioaddr, iolen;
-	long mmio_addr, mmio_len;
-
-	if (xen_platform_pdev)
-		return -EBUSY;
-	xen_platform_pdev = pdev;
-
-	i = pci_enable_device(pdev);
-	if (i)
-		return i;
-
-	ioaddr = pci_resource_start(pdev, 0);
-	iolen = pci_resource_len(pdev, 0);
-
-	mmio_addr = pci_resource_start(pdev, 1);
-	mmio_len = pci_resource_len(pdev, 1);
-
-	callback_via = get_callback_via(pdev);
-
-	if (mmio_addr == 0 || ioaddr == 0 || callback_via == 0) {
-		printk(KERN_WARNING DRV_NAME ":no resources found\n");
-		return -ENOENT;
-	}
-
-	ret = pci_request_region(pdev, 1, DRV_NAME);
-	if (ret < 0)
-		return ret;
-
-	ret = pci_request_region(pdev, 0, DRV_NAME);
-	if (ret < 0)
-		goto mem_out;
-
-	platform_mmio = mmio_addr;
-	platform_mmiolen = mmio_len;
-
-	ret = init_hypercall_stubs();
-	if (ret < 0)
-		goto out;
-
-	ret = check_platform_magic(&pdev->dev, ioaddr, iolen);
-	if (ret < 0)
-		goto out;
-
-	if ((ret = init_xen_info()))
-		goto out;
-
-	if ((ret = gnttab_init()))
-		goto out;
-
-	if ((ret = xen_irq_init(pdev)))
-		goto out;
-
-	if ((ret = set_callback_via(callback_via)))
-		goto out;
-
-	if ((ret = xenbus_init()))
-		goto out;
-
-	if ((ret = xen_reboot_init()))
-		goto out;
-
-	if ((ret = xen_panic_handler_init()))
-		goto out;
-
-#ifdef HAVE_OLDMEM_PFN_IS_RAM
-	register_oldmem_pfn_is_ram(&xen_oldmem_pfn_is_ram);
-#endif
- out:
-	if (ret) {
-		pci_release_region(pdev, 0);
-mem_out:
-		pci_release_region(pdev, 1);
-	}
-
-	return ret;
-}
-
-#define XEN_PLATFORM_VENDOR_ID 0x5853
-#define XEN_PLATFORM_DEVICE_ID 0x0001
-static struct pci_device_id platform_pci_tbl[] __devinitdata = {
-	{XEN_PLATFORM_VENDOR_ID, XEN_PLATFORM_DEVICE_ID,
-	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
-	/* Continue to recognise the old ID for now */
-	{0xfffd, 0x0101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
-	{0,}
-};
-
-MODULE_DEVICE_TABLE(pci, platform_pci_tbl);
-
-static struct pci_driver platform_driver = {
-	name:     DRV_NAME,
-	probe:    platform_pci_init,
-	id_table: platform_pci_tbl,
-};
-
-static int pci_device_registered;
-
-void platform_pci_resume(void)
-{
-	struct xen_add_to_physmap xatp;
-
-	resume_hypercall_stubs();
-
-	xatp.domid = DOMID_SELF;
-	xatp.idx = 0;
-	xatp.space = XENMAPSPACE_shared_info;
-	xatp.gpfn = shared_info_frame;
-	if (HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp))
-		BUG();
-
-	if (set_callback_via(callback_via))
-		printk("platform_pci_resume failure!\n");
-
-	unplug_devices();
-}
-
-static int __init platform_pci_module_init(void)
-{
-	int rc;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
-	rc = pci_module_init(&platform_driver);
-#else
-	rc = pci_register_driver(&platform_driver);
-#endif
-	if (rc) {
-		printk(KERN_INFO DRV_NAME
-		       ": No platform pci device model found\n");
-		return rc;
-	}
-
-	pci_device_registered = 1;
-	return 0;
-}
-
-module_init(platform_pci_module_init);

unmodified_drivers/linux-2.6/platform-pci/platform-pci.h

@@ -1,31 +0,0 @@
-/******************************************************************************
- * platform-pci.h
- * 
- * Xen platform PCI device driver
- * Copyright (c) 2004, Intel Corporation. <xiaofeng.ling@intel.com>
- * Copyright (c) 2007, XenSource Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _XEN_PLATFORM_PCI_H
-#define _XEN_PLATFORM_PCI_H
-
-#include <linux/pci.h>
-
-unsigned long alloc_xen_mmio(unsigned long len);
-void platform_pci_resume(void);
-
-extern struct pci_dev *xen_platform_pdev;
-
-#endif /* _XEN_PLATFORM_PCI_H */

unmodified_drivers/linux-2.6/platform-pci/xen_support.c

@@ -1,73 +0,0 @@
-/******************************************************************************
- * support.c
- * Xen module support functions.
- * Copyright (C) 2004, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <xen/evtchn.h>
-#include <xen/interface/xen.h>
-#include <asm/hypervisor.h>
-#include "platform-pci.h"
-
-#ifdef HAVE_XEN_PLATFORM_COMPAT_H
-#include <xen/platform-compat.h>
-#endif
-
-#if defined (__ia64__)
-unsigned long __hypercall(unsigned long a1, unsigned long a2,
-			  unsigned long a3, unsigned long a4,
-			  unsigned long a5, unsigned long cmd)
-{
-	unsigned long __res;
-	__asm__ __volatile__ (";;\n"
-		"mov r2=%1\n"
-		"break 0x1000 ;;\n"
-		"mov %0=r8 ;;\n"
-		: "=r"(__res) : "r"(cmd) : "r2", "r8", "memory");
-
-	return __res;
-}
-EXPORT_SYMBOL(__hypercall);
-
-int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
-{
-	return xencomm_hypercall_grant_table_op(cmd, uop, count);
-}
-EXPORT_SYMBOL(HYPERVISOR_grant_table_op);
-
-/* without using balloon driver on PV-on-HVM for ia64 */
-void balloon_update_driver_allowance(long delta)
-{
-	/* nothing */
-}
-EXPORT_SYMBOL_GPL(balloon_update_driver_allowance);
-
-void balloon_release_driver_page(struct page *page)
-{
-	/* nothing */
-}
-EXPORT_SYMBOL_GPL(balloon_release_driver_page);
-#endif /* __ia64__ */
-
-void xen_machphys_update(unsigned long mfn, unsigned long pfn)
-{
-	BUG();
-}
-EXPORT_SYMBOL(xen_machphys_update);
-

unmodified_drivers/linux-2.6/scsifront/Kbuild

@@ -1,6 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m += xen-scsi.o
-
-xen-scsi-objs := scsifront.o xenbus.o
-

unmodified_drivers/linux-2.6/scsifront/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif

unmodified_drivers/linux-2.6/usbfront/Kbuild

@@ -1,7 +0,0 @@
-include $(M)/overrides.mk
-
-obj-m += $(if $(shell grep '^\#include "\.\./\.\./' $(obj)/usbfront.h), \
-	      $(warning usbfront cannot be built), \
-	      xen-usb.o)
-
-xen-usb-objs := usbfront-hcd.o xenbus.o

unmodified_drivers/linux-2.6/usbfront/Makefile

@@ -1,3 +0,0 @@
-ifneq ($(KERNELRELEASE),)
-include $(src)/Kbuild
-endif