Mike Habeck 7bd1c365fd x86/PCI: Add option to not assign BAR's if not already assigned ... The Linux kernel assigns BARs that a BIOS did not assign, most likely to handle broken BIOSes that didn't enumerate the devices correctly. On UV the BIOS purposely doesn't assign I/O BARs for certain devices/ drivers we know don't use them (examples, LSI SAS, Qlogic FC, ...). We purposely don't assign these I/O BARs because I/O Space is a very limited resource. There is only 64k of I/O Space, and in a PCIe topology that space gets divided up into 4k chucks (this is due to the fact that a pci-to-pci bridge's I/O decoder is aligned at 4k)... Thus a system can have at most 16 cards with I/O BARs: (64k / 4k = 16) SGI needs to scale to >16 devices with I/O BARs. So by not assigning I/O BARs on devices we know don't use them, we can do that (iff the kernel doesn't go and assign these BARs that the BIOS purposely didn't assign). This patch will not assign a resource to a device BAR if that BAR was not assigned by the BIOS, and the kernel cmdline option 'pci=nobar' was specified. This patch is closely modeled after the 'pci=norom' option that currently exists in the tree. Signed-off-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>		2010-07-30 09:29:12 -07:00
..
ABI	Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"	2010-06-11 13:08:37 -07:00
accounting
acpi	ACPI, APEI, EINJ injection parameters support	2010-05-19 22:42:08 -04:00
aoe
arm	ARM: SAMSUNG: Documentation: add documentation on GPIO code	2010-05-28 19:31:31 +09:00
auxdisplay
blackfin	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
block	Documentation: fix block/biodoc.txt dma mapping description	2010-03-08 09:11:07 +01:00
blockdev
cdrom
cgroups	memcg: update documentation	2010-05-27 09:12:43 -07:00
connector	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
console	doc: fix console doc typo	2010-02-24 13:51:32 +01:00
cpu-freq	[CPUFREQ] Processor Clocking Control interface driver	2010-01-13 10:55:16 -05:00
cpuidle
cris
crypto
development-process	Documentation/development-process: add staging & mmotm info	2010-05-24 07:30:55 -07:00
device-mapper	dm: document when snapshot has finished merging	2010-03-06 02:29:56 +00:00
DocBook	Merge branch 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-06-04 15:38:12 -07:00
driver-model	Fix spelling of 'platform' in comments and doc	2010-02-05 12:22:34 +01:00
dvb	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
early-userspace
fault-injection	lkdtm: add debugfs access and loosen KPROBE ties	2010-03-06 11:26:32 -08:00
fb	fbdev: rename imacfb.txt to efifb.txt and change imacfb to efifb.	2010-04-07 08:38:02 -07:00
filesystems	Merge branch 'master' into for-linus	2010-06-04 13:22:30 -05:00
firmware_class
frv
hwmon	hwmon: (ltc4245) Read only one GPIO pin	2010-05-27 19:59:02 +02:00
i2c	Documentation/i2c: Checkpatch cleanup	2010-06-03 11:33:50 +02:00
i2o
ia64
ide
infiniband
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
ioctl	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2010-03-19 09:43:06 -07:00
isdn	gigaset: small documentation improvement	2010-02-26 01:24:22 -08:00
ja_JP
kbuild	Merge branch 'for-35' of git://repo.or.cz/linux-kbuild	2010-06-01 08:55:52 -07:00
kdump
ko_KR
kvm	KVM: MMU: Segregate shadow pages with different cr0.wp	2010-05-19 11:41:09 +03:00
laptops	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86	2010-05-21 17:13:24 -07:00
lguest	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
m68k
make
mips
misc-devices
mn10300
mtd
namespaces
netlabel	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
networking	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2010-05-20 21:04:44 -07:00
parisc
PCI	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2010-05-21 18:58:52 -07:00
pcmcia	pcmcia: dev_node removal (core)	2010-05-10 10:23:17 +02:00
power	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2010-05-21 18:58:52 -07:00
powerpc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2010-05-21 11:17:05 -07:00
pps
prctl
RCU	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-18 08:27:54 -07:00
s390	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
scheduler	sched: Remove USER_SCHED from documentation	2010-04-02 20:12:01 +02:00
scsi	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
serial	ldisc: new dcd_change() method for line disciplines	2010-03-12 15:52:43 -08:00
sh
sound	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6	2010-05-20 09:41:44 -07:00
sparc
spi	spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller	2010-05-25 00:23:16 -06:00
sysctl	mm: compaction: add a tunable that decides when memory should be compacted and when it should be reclaimed	2010-05-25 08:06:59 -07:00
telephony
thermal
timers	Documentation/timers/hpet_example.c: only build on X86	2010-06-01 10:05:19 -07:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
uml
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2010-05-20 21:26:12 -07:00
video4linux	V4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner	2010-07-08 16:50:05 -03:00
vm	numa: update Documentation/vm/numa, add memoryless node info	2010-05-27 09:12:57 -07:00
w1	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
watchdog	watchdog: docs: add an entry for imx2_wdt	2010-07-01 16:02:55 +00:00
wimax
x86	x86, numa: Remove configurable node size support for numa emulation	2010-02-15 14:34:18 -08:00
zh_CN
.gitignore	add random binaries to .gitignore	2010-04-08 11:34:34 +02:00
00-INDEX	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
applying-patches.txt
atomic_ops.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
Changes	netfilter: xtables: remove xt_string revision 0	2010-03-25 17:04:57 +01:00
circular-buffers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
CodingStyle
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
credentials.txt	CRED: Fix __task_cred()'s lockdep check and banner comment	2010-07-29 15:16:18 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	driver core: add devname module aliases to allow module on-demand auto-loading	2010-05-25 15:08:26 -07:00
DMA-API-HOWTO.txt	Documentation/DMA-API-HOWTO: add ARCH_KMALLOC_MINALIGN description	2010-05-27 09:12:53 -07:00
DMA-API.txt	Documentation: rename PCI-DMA-mapping.txt to DMA-API-HOWTO.txt	2010-03-12 15:52:43 -08:00
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff	Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig	2010-02-25 14:43:57 -08:00
dynamic-debug-howto.txt
edac.txt	Documentation/edac.txt: Reflect the sysfs changes at the document	2010-05-10 11:49:30 -03:00
eisa.txt	doc: fix Defaultd -> Defaults typo in EISA doc	2010-02-05 12:22:39 +01:00
email-clients.txt	Documentation/email-clients.txt: update gmail information	2010-03-12 15:52:35 -08:00
feature-removal-schedule.txt	ACPI / Sleep: Allow the NVS saving to be skipped during suspend to RAM	2010-07-24 23:26:09 -04:00
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	gpio: introduce gpio_request_one() and friends	2010-03-06 11:26:48 -08:00
highuid.txt
HOWTO	Documentation/HOWTO: update git home URL	2010-04-22 15:24:56 -07:00
hw_random.txt
init.txt	init/main.c: improve usability in case of init binary failure	2010-03-06 11:26:29 -08:00
initrd.txt
Intel-IOMMU.txt
intel_txt.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt	ipmi: add parameter to limit CPU usage in kipmid	2010-03-12 15:52:39 -08:00
IRQ-affinity.txt
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	documentation: update kernel-doc-nano-HOWTO information	2010-01-11 09:34:07 -08:00
kernel-docs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
kernel-parameters.txt	x86/PCI: Add option to not assign BAR's if not already assigned	2010-07-30 09:29:12 -07:00
keys-request-key.txt
keys.txt
kmemcheck.txt
kmemleak.txt
kobject.txt	kobject: documentation: Update to refer to kset-example.c.	2010-03-19 07:12:20 -07:00
kprobes.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
kref.txt
ldm.txt
leds-class.txt
leds-lp3944.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
logo.gif
logo.txt
magic-number.txt
Makefile	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
ManagementStyle
mca.txt
md.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
memory-barriers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
memory-hotplug.txt
memory.txt
mono.txt
mutex-design.txt	Rename .text.lock to .text..lock.	2010-03-03 11:26:00 +01:00
nmi_watchdog.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt	panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')	2010-05-19 08:37:43 +01:00
padata.txt	Add a document describing the padata interface	2010-05-14 09:18:55 -06:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt	doc: capitalization and other minor fixes in pnp doc	2010-02-05 12:22:44 +01:00
preempt-locking.txt
printk-formats.txt
prio_tree.txt
rbtree.txt	rbtree: Add support for augmented rbtrees	2010-02-18 15:40:56 -08:00
rfkill.txt	Document the rfkill sysfs ABI	2010-03-10 17:09:33 -05:00
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
rt-mutex.txt
rtc.txt
SAK.txt
SecurityBugs
SELinux.txt
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
slow-work.txt
SM501.txt
Smack.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
sparse.txt	doc: Change urls for sparse	2010-04-27 22:59:07 +02:00
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt	Documentation: -stable rules: upstream commit ID requirement reworded	2010-04-22 15:24:56 -07:00
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Documentation: SubmittingDrivers: Resources	2010-05-27 09:12:43 -07:00
SubmittingPatches
svga.txt
sysfs-rules.txt	Fix typos in comments	2010-03-16 11:47:56 +01:00
sysrq.txt	Input: Documentation/sysrq.txt - update KEY_SYSRQ info	2010-05-19 10:14:15 -07:00
tomoyo.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
volatile-considered-harmful.txt	Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation	2010-03-24 16:31:20 -07:00
zorro.txt