PCI_STD_RESOURCE_END is (confusingly) the index of the last valid BAR, not
the *number* of BARs.  To iterate through all possible BARs, we need to
include PCI_STD_RESOURCE_END.

Fixes: 9fe373f9 ("PCI: Increase IBM ipr SAS Crocodile BARs to at least system page size")
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

The ASUS M2N-LR should not trigger boot interrupt quirks although it
carries an Intel 6702PXH.  On this board the boot interrupt quirks cause
incorrect IRQ assignments and should be disabled.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=43074Tested-by: NSolomon Peachy <pizza@shaftnet.org>
Signed-off-by: NStefan Assmann <sassmann@kpanic.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Instead of copy & pasting and old version of the code.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

The 82599 quirk contained an outdated copy of the FLR code.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

On Cavium ThunderX2 arm64 SoCs (formerly known as Broadcom Vulcan), the PCI
topology is slightly unusual.  For a multi-node system, it looks like:

    00:00.0 PCI bridge to [bus 01-1e]
    01:0a.0 PCI-to-PCIe bridge to [bus 02-04]
    02:00.0 PCIe Root Port bridge to [bus 03-04] (XLATE_ROOT)
    03:00.0 PCIe Endpoint

pci_for_each_dma_alias() assumes IOMMU translation is done at the root of
the PCI hierarchy.  It generates 03:00.0, 01:0a.0, and 00:00.0 as DMA
aliases for 03:00.0 because buses 01 and 00 are non-PCIe buses that don't
carry the Requester ID.

Because the ThunderX2 IOMMU is at 02:00.0, the Requester IDs 01:0a.0 and
00:00.0 are never valid for the endpoint.  This quirk stops alias
generation at the XLATE_ROOT bridge so we won't generate 01:0a.0 or
00:00.0.

The current IOMMU code only maps the last alias (this is a separate bug in
itself).  Prior to this quirk, we only created IOMMU mappings for the
invalid Requester ID 00:00:0, which never matched any DMA transactions.

With this quirk, we create IOMMU mappings for a valid Requester ID, which
fixes devices with no aliases but leaves devices with aliases still broken.

The last alias for the endpoint is also used by the ARM GICv3 MSI-X code.
Without this quirk, the GIC Interrupt Translation Tables are setup with the
invalid Requester ID, and the MSI-X generated by the device fails to be
translated and routed.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=195447Signed-off-by: NJayachandran C <jnair@caviumnetworks.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NRobin Murphy <robin.murphy@arm.com>
Acked-by: NDavid Daney <david.daney@cavium.com>

The ITE 8893 bridge has the same problems as the ITE 8892, which were
resulting in crippling an older PCI 1Gbps NIC down to 45Mbps throughput
with IOMMU and VT-d enabled.  With the patch, this old e1000 goes back up
to ~900Mbps.
Suggested-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>

Per Intel Specification Update 335553-002 (see link below), some 82579
network adapters advertise a Function Level Reset (FLR) capability, but
they can hang when an FLR is triggered.

To reproduce the problem, attach the device to a VM, then detach and try to
attach again.

Add a quirk to prevent the use of FLR on these devices.

[bhelgaas: changelog, comments]
Link: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/82579lm-82579v-gigabit-network-connection-spec-update.pdfSigned-off-by: NSasha Neftin <sasha.neftin@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Only apply the Cavium ACS quirk to devices with ID in the range
0xa000-0xa0ff.  These are the on-chip PCI devices for CN81xx/CN83xx/CN88xx.

Fixes: b404bcfb ("PCI: Add ACS quirk for all Cavium devices")
Reported-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NManish Jaggi <mjaggi@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NAlex Williamson <alex.williamson@redhat.com>

QLogic ISP2722-based 16/32Gb Fibre Channel to PCIe Adapter has the VPD
access issue too, while read the common pci-sysfs access interface shown as

 /sys/devices/pci0000:00/0000:00:03.2/0000:0b:00.0/vpd

with simple 'cat' could cause system hang and panic:

  Kernel panic - not syncing: An NMI occurred. Depending on your system the reason for the NMI is logged in any one of the following resources:
  1. Integrated Management Log (IML)
  2. OA Syslog
  3. OA Forward Progress Log
  4. iLO Event Log
  CPU: 0 PID: 15070 Comm: udevadm Not tainted 4.1.12
  Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 12/27/2015
   0000000000000086 000000007f0cdf51 ffff880c4fa05d58 ffffffff817193de
   ffffffffa00b42d8 0000000000000075 ffff880c4fa05dd8 ffffffff81714072
   0000000000000008 ffff880c4fa05de8 ffff880c4fa05d88 000000007f0cdf51
  Call Trace:
   <NMI>  [<ffffffff817193de>] dump_stack+0x63/0x81
   [<ffffffff81714072>] panic+0xd0/0x20e
   [<ffffffffa00b390d>] hpwdt_pretimeout+0xdd/0xe0 [hpwdt]
   [<ffffffff81021fc9>] ? sched_clock+0x9/0x10
   [<ffffffff8101c101>] nmi_handle+0x91/0x170
   [<ffffffff8101c10c>] ? nmi_handle+0x9c/0x170
   [<ffffffff8101c5fe>] io_check_error+0x1e/0xa0
   [<ffffffff8101c719>] default_do_nmi+0x99/0x140
   [<ffffffff8101c8b4>] do_nmi+0xf4/0x170
   [<ffffffff817232c5>] end_repeat_nmi+0x1a/0x1e
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   <<EOE>>  [<ffffffff815db4b3>] raw_pci_read+0x23/0x40
   [<ffffffff815db4fc>] pci_read+0x2c/0x30
   [<ffffffff8136f612>] pci_user_read_config_word+0x72/0x110
   [<ffffffff8136f746>] pci_vpd_pci22_wait+0x96/0x130
   [<ffffffff8136ff9b>] pci_vpd_pci22_read+0xdb/0x1a0
   [<ffffffff8136ea30>] pci_read_vpd+0x20/0x30
   [<ffffffff8137d590>] read_vpd_attr+0x30/0x40
   [<ffffffff8128e037>] sysfs_kf_bin_read+0x47/0x70
   [<ffffffff8128d24e>] kernfs_fop_read+0xae/0x180
   [<ffffffff8120dd97>] __vfs_read+0x37/0x100
   [<ffffffff812ba7e4>] ? security_file_permission+0x84/0xa0
   [<ffffffff8120e366>] ? rw_verify_area+0x56/0xe0
   [<ffffffff8120e476>] vfs_read+0x86/0x140
   [<ffffffff8120f3f5>] SyS_read+0x55/0xd0
   [<ffffffff81720f2e>] system_call_fastpath+0x12/0x71
  Shutting down cpus with NMI
  Kernel Offset: disabled
  drm_kms_helper: panic occurred, switching back to text console

So blacklist the access to its VPD.
Signed-off-by: NEthan Zhao <ethan.zhao@oracle.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v4.6+

Fix typos and add the following to the scripts/spelling.txt:

  followings||following

While we are here, add a missing colon in the boilerplate in DT binding
documents.  The "you SoC" in allwinner,sunxi-pinctrl.txt was fixed as
well.

I reworded "as the followings:" to "as follows:" for
drivers/usb/gadget/udc/renesas_usb3.c.

Link: http://lkml.kernel.org/r/1481573103-11329-32-git-send-email-yamada.masahiro@socionext.comSigned-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The Qualcomm QDF2xxx root ports don't advertise an ACS capability, but they
do provide ACS-like features to disable peer transactions and validate bus
numbers in requests.

To be specific:
* Hardware supports source validation but it will report the issue as
Completer Abort instead of ACS Violation.

* Hardware doesn't support peer-to-peer and each root port is a root
complex with unique segment numbers.

* It is not possible for one root port to pass traffic to the other root
port.  All PCIe transactions are terminated inside the root port.

Add an ACS quirk for the QDF2400 and QDF2432 products.

[bhelgaas: changelog]
Signed-off-by: NSinan Kaya <okaya@codeaurora.org>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>

Sort the list of Intel devices that have no PCI D3 delay by ID.  Add a
comment for group of devices that had not been marked yet.

There is no functional change.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

The PCIe Root Port in Hip06/Hip07 SoCs advertises an MSI capability, but it
cannot generate MSIs.  It can transfer MSI/MSI-X from downstream devices,
but does not support MSI/MSI-X itself.

Add a quirk to prevent use of MSI/MSI-X by the Root Port.

[bhelgaas: changelog, sort vendor ID #define, drop device ID #define]
Signed-off-by: NDongdong Liu <liudongdong3@huawei.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NGabriele Paoloni <gabriele.paoloni@huawei.com>
Reviewed-by: NZhou Wang <wangzhou1@hisilicon.com>

The Broadcom Northstar2 SoC has a number of quirks for the PAXC
(internal/fake) PCI bus.  Specifically, the PCI config space is shared
between the root port and the first PF (ie., PF0), and a number of fields
are tied to zero (thus preventing them from being set).  These cannot be
"fixed" in device firmware, so we must fix them with a quirk.
Signed-off-by: NJon Mason <jon.mason@broadcom.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Intel 200-series chipsets have the same errata as 100-series: the ACS
capability doesn't follow the PCIe spec, the capability and control
registers are dwords rather than words.  Add PCIe root port device IDs to
existing quirk.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>

There is at least one Chelsio 10Gb card which uses VPD area to store some
non-standard blocks (example below).  However pci_vpd_size() returns the
length of the first block only assuming that there can be only one VPD "End
Tag".

Since 4e1a6355 ("vfio/pci: Use kernel VPD access functions"), VFIO
blocks access beyond that offset, which prevents the guest "cxgb3" driver
from probing the device.  The host system does not have this problem as its
driver accesses the config space directly without pci_read_vpd().

Add a quirk to override the VPD size to a bigger value.  The maximum size
is taken from EEPROMSIZE in drivers/net/ethernet/chelsio/cxgb3/common.h.
We do not read the tag as the cxgb3 driver does as the driver supports
writing to EEPROM/VPD and when it writes, it only checks for 8192 bytes
boundary.  The quirk is registered for all devices supported by the cxgb3
driver.

This adds a quirk to the PCI layer (not to the cxgb3 driver) as the cxgb3
driver itself accesses VPD directly and the problem only exists with the
vfio-pci driver (when cxgb3 is not running on the host and may not be even
loaded) which blocks accesses beyond the first block of VPD data.  However
vfio-pci itself does not have quirks mechanism so we add it to PCI.

This is the controller:
Ethernet controller [0200]: Chelsio Communications Inc T310 10GbE Single Port Adapter [1425:0030]

This is what I parsed from its VPD:
===
b'\x82*\x0010 Gigabit Ethernet-SR PCI Express Adapter\x90J\x00EC\x07D76809 FN\x0746K'
 0000 Large item 42 bytes; name 0x2 Identifier String
	b'10 Gigabit Ethernet-SR PCI Express Adapter'
 002d Large item 74 bytes; name 0x10
	#00 [EC] len=7: b'D76809 '
	#0a [FN] len=7: b'46K7897'
	#14 [PN] len=7: b'46K7897'
	#1e [MN] len=4: b'1037'
	#25 [FC] len=4: b'5769'
	#2c [SN] len=12: b'YL102035603V'
	#3b [NA] len=12: b'00145E992ED1'
 007a Small item 1 bytes; name 0xf End Tag

 0c00 Large item 16 bytes; name 0x2 Identifier String
	b'S310E-SR-X      '
 0c13 Large item 234 bytes; name 0x10
	#00 [PN] len=16: b'TBD             '
	#13 [EC] len=16: b'110107730D2     '
	#26 [SN] len=16: b'97YL102035603V  '
	#39 [NA] len=12: b'00145E992ED1'
	#48 [V0] len=6: b'175000'
	#51 [V1] len=6: b'266666'
	#5a [V2] len=6: b'266666'
	#63 [V3] len=6: b'2000  '
	#6c [V4] len=2: b'1 '
	#71 [V5] len=6: b'c2    '
	#7a [V6] len=6: b'0     '
	#83 [V7] len=2: b'1 '
	#88 [V8] len=2: b'0 '
	#8d [V9] len=2: b'0 '
	#92 [VA] len=2: b'0 '
	#97 [RV] len=80: b's\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'...
 0d00 Large item 252 bytes; name 0x11
	#00 [VC] len=16: b'122310_1222 dp  '
	#13 [VD] len=16: b'610-0001-00 H1\x00\x00'
	#26 [VE] len=16: b'122310_1353 fp  '
	#39 [VF] len=16: b'610-0001-00 H1\x00\x00'
	#4c [RW] len=173: b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'...
 0dff Small item 0 bytes; name 0xf End Tag

10f3 Large item 13315 bytes; name 0x62
!!! unknown item name 98: b'\xd0\x03\x00@`\x0c\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00'
===
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

It's not very enlightening to see

  pci 0000:07:00.0: [Firmware Bug]: VPD access disabled

in the dmesg log because there's no clue about what the firmware bug is.
Expand the message to explain why we're disabling VPD.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Mellanox devices were marked as having INTx masking ability broken.  As a
result, the VFIO driver fails to start when more than one device function
is passed-through to a VM if both have the same INTx pin.

Prior to Connect-IB, Mellanox devices exposed to the operating system one
PCI function per all ports.  Starting from Connect-IB, the devices are
function-per-port.  When passing the second function to a VM, VFIO will
fail to start.

Exclude ConnectX-4, ConnectX4-Lx and Connect-IB from the list of Mellanox
devices marked as having broken INTx masking:

- ConnectX-4 and ConnectX4-LX firmware version is checked. If INTx
  masking is supported, we unmark the broken INTx masking.
- Connect-IB does not support INTx currently so will not cause any
  problem.

[bhelgaas: call pci_disable_device() always, after iounmap()]
Fixes: 11e42532 ("PCI: Assume all Mellanox devices have broken INTx masking")
Signed-off-by: NNoa Osherovich <noaos@mellanox.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NOr Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: NGavin Shan <gwshan@linux.vnet.ibm.com>

Change Mellanox's broken_intx_masking() quirk from an "all Mellanox
devices" to a quirk for listed devices only.

[bhelgaas: remove #defines, reorder to keep other quirks together]
Signed-off-by: NNoa Osherovich <noaos@mellanox.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NOr Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: NGavin Shan <gwshan@linux.vnet.ibm.com>

Convert all quirk_broken_intx_masking() quirks from HEADER to FINAL.

The quirk sets dev->broken_intx_masking, which is only used by
pci_intx_mask_supported(), which is not needed until after FINAL
quirks have been run.

[bhelgaas: changelog]
Signed-off-by: NNoa Osherovich <noaos@mellanox.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NGavin Shan <gwshan@linux.vnet.ibm.com>

The newly added quirk_cavium_sriov_rnm_link doesn't compile if
PCI_ATS is off.  This patch adds a check for PCI_ATS.

Fixes: 21b5b8ee ("PCI: quirk fixup for cavium invalid sriov...")
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

VMD root ports change all source ids to the VMD device ID.  To find the
sender of the AER notification, we need to scan all child devices for the
AER sender, rather than relying on the source ID from the message.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Cavium cn88xx hardware presents an incorrect SR-IOV Function
Dependency Link, add a fixup quirk for the affected devices.
Acked-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NAnanth Jasty <Ananth.Jasty@cavium.com>
Signed-off-by: NOmer Khaliq <okhaliq@caviumnetworks.com>
Acked-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

From: Xavier Gnata <xavier.gnata@gmail.com>

Add support to INTEL_FALCON_RIDGE_2C controller and corresponding quirk
to support suspend/resume.
Tested against 4.7 master on a MacBook Air 11" 2015.
Signed-off-by: NAndreas Noever <andreas.noever@gmail.com>
Reviewed-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The quirk 'quirk_apple_wait_for_thunderbolt' did not fire on Falcon
Ridge 4C controllers with subdevice/subvendor set to zero. This lead
to lost pci devices on system resume.

Older thunderbolt controllers (pre Falcon Ridge) used the same device id
for bridges and for the controller. On Apple hardware the subvendor- &
subdevice-ids were set for the controller, but not for bridges. So that
is what was used to differentiate between the two. Starting with Falcon
Ridge bridges and controllers received different device ids.
Additionally on some MacBookPro models (but not all) the
subvendor/subdevice was zeroed.

Starting with a42fb351 (thunderbolt: Allow loading of module on recent
Apple MacBooks with thunderbolt 2 controller) the thunderbolt driver
binds to all Falcon Ridge 4C controllers (irregardless of
subvendor/subdevice). The corresponding quirk was not updated.

This commit changes the quirk to check the device class instead of its
subvendor-/subdeviceids. This works for all generations of Thunderbolt
controllers.
Signed-off-by: NAndreas Noever <andreas.noever@gmail.com>
Reviewed-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Similar to the AR93xx and the AR94xx series, the AR95xx also have the same
quirk for the Bus Reset.  It will lead to instant system reset if the
device is assigned via VFIO to a KVM VM.  I've been able reproduce this
behavior with a MikroTik R11e-2HnD.

Fixes: c3e59ee4 ("PCI: Mark Atheros AR93xx to avoid bus reset")
Signed-off-by: NMaik Broemme <mbroemme@libmpq.org>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.14+

The Solarflare SFC9220 apparently lacks an ACS capability, but does not
perform peer-to-peer between functions.  Add a quirk so we know about this
isolation.

[bhelgaas: changelog]
Signed-off-by: NEdward Cree <ecree@solarflare.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Add a DMA alias quirk for the Adaptec 3805, just like the 3405 quirk added
in commit d3d2ab43 ("PCI: Add DMA alias quirk for Adaptec 3405").

Link: https://www.redhat.com/archives/vfio-users/2016-July/msg00046.htmlSigned-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Similar to the AR93xx series, the AR94xx and the Qualcomm QCA988x also have
the same quirk for the Bus Reset.

Fixes: c3e59ee4 ("PCI: Mark Atheros AR93xx to avoid bus reset")
Signed-off-by: NChris Blake <chrisrblake93@gmail.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org  # v3.14+

Add function 1 DMA alias quirk for Marvell 88SE9182.

We found this quirk reported in the same thread as other Marvell
devices, but no patch resulted:

  https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78Signed-off-by: NSteven Graham <sgraham@xes-inc.com>
Signed-off-by: NAaron Sierra <asierra@xes-inc.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Intel Sunrise Point root ports implement ACS but use dwords for the
capability and control registers, putting the control register at the wrong
offset.

Use quirks to enable and test ACS for these devices, which match the
standard functions modulo the broken control register offset.

Note that lspci assumes devices implement ACS per spec, so it shows invalid
ACS data for these devices.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

The original thought was that if a device implemented ACS, then surely
we want to use that... well, it turns out that devices can make an ACS
capability so broken that we still need to fall back to quirks.

Reverse the order of ACS enabling to give quirks first shot at it.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

All of the i40e (XL710/X710) 10/20/40GbE NICs lack support for indicating
INTx is asserted via the interrupt bit in the PCI status register.  The
DisINTx bit in the command register is functional, causing these devices to
be incorrectly detected as supporting INTx masking.  Quirk them to properly
indicate no INTx masking support.

Device IDs copied from i40e_devids.h.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: John Ronciak <john.ronciak@intel.com>
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>

The MIC x200 NTB forwards DMA transactions upstream using multiple alien
RIDs.  These RIDs have to be added as aliases to the DMA device to allow
buffer access when the IOMMU is enabled.
Signed-off-by: NJacek Lawrynowicz <jacek.lawrynowicz@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>
Acked-by: NDavid Woodhouse <David.Woodhouse@intel.com>

One of the quirks that adds DMA aliases logs an informational message in
dmesg.  Move that to pci_add_dma_alias() so all users log the message
consistently.  No functional change intended (except extra message).
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>

Add a pci_add_dma_alias() interface to encapsulate the details of adding an
alias.  No functional change intended.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NAlex Williamson <alex.williamson@redhat.com>

Add support for the 1st gen Light Ridge controller, which is built into
these systems:

  iMac12,1       2011  21.5"
  iMac12,2       2011  27"
  Macmini5,1     2011  i5 2.3 GHz
  Macmini5,2     2011  i5 2.5 GHz
  Macmini5,3     2011  i7 2.0 GHz
  MacBookPro8,1  2011  13"
  MacBookPro8,2  2011  15"
  MacBookPro8,3  2011  17"
  MacBookPro9,1  2012  15"
  MacBookPro9,2  2012  13"

Light Ridge (CV82524) was the very first copper Thunderbolt controller,
introduced 2010 alongside its fiber-optic cousin Light Peak (CVL2510).
Consequently the chip suffers from some teething troubles:

  - MSI is broken for hotplug signaling on the downstream bridges: The chip
    just never sends an interrupt.  It requests 32 MSIs for each of its six
    bridges and the pcieport driver only allocates one per bridge.  However
    I've verified that even if 32 MSIs are allocated there's no interrupt
    on hotplug.  The only option is thus to disable MSI, which is also what
    OS X does.  Apparently all Thunderbolt chips up to revision 1 of Cactus
    Ridge 4C are plagued by this issue so quirk those as well.

  - The chip supports a maximum hop_count of 32, unlike its successors
    which support only 12.  Fixup ring_interrupt_active() to cope with
    values >= 32.

  - Another peculiarity is that the chip supports a maximum of 13 ports
    whereas its successors support 12.  However the additional port (#5)
    seems to be unusable as reading its TB_CFG_PORT config space results in
    TB_CFG_ERROR_INVALID_CONFIG_SPACE.  Add a quirk to mark the port
    disabled on the root switch, assuming that's necessary on all Macs
    using this chip.

Tested-by: Lukas Wunner <lukas@wunner.de> [MacBookPro9,1]
Tested-by: William Brown <william@blackhats.net.au> [MacBookPro8,2]
Signed-off-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NAndreas Noever <andreas.noever@gmail.com>

Intel Gen 1 and 2 chips use the same ID for NHI, bridges and switch.  Gen 3
chips and onward use a distinct ID for the NHI.

No functional change intended.
Signed-off-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NAndreas Noever <andreas.noever@gmail.com>

PCI-SIG has defined Interface FEh for Base Class 0Ch, Sub-Class 03h as "USB
Device (not host controller)".  It is already being used in various USB
device controller drivers for matching, so add PCI_CLASS_SERIAL_USB_DEVICE
and use it.
Signed-off-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>