Commit Graph

136 Commits

Author SHA1 Message Date
Krzysztof Helt 27e4685973 PCI: unhide the SMBus on the Compaq Deskpro EN
This patch unhides the SMBus on Compaq Deskpro EN
SFF P667 with the Intel 815E chipset. Unhiding it reveals
a THMC51 hardware monitoring chip.

Jean Delvare has checked that this machine has no ACPI
magic touching the SMBus nor the hardware monitoring chip,
so this should be safe.

The patch was tested on Fedora Core 9 with 2.6.25.4 kernel.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Tested-by: Rafał Haładuda <rh1985@wp.pl>
CC: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10 11:57:26 -07:00
Jean Delvare 10260d9ab7 PCI: Unhide the SMBus on the Compaq Evo D510
One more machine with a hidden Intel SMBus. Unhiding it reveals a SMSC
EMC6D100 hardware monitoring chip. I have checked that this machine
has no ACPI magic touching the SMBus nor the hardware monitoring chip,
so this should be safe.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10 10:59:55 -07:00
Rafael J. Wysocki e1a2a51e68 Suspend/Resume bug in PCI layer wrt quirks
Some quirks should be called with interrupt disabled, we can't directly
call them in .resume_early. Also the patch introduces
pci_fixup_resume_early and pci_fixup_suspend, which matches current
device core callbacks (.suspend/.resume_early).

TBD: Somebody knows why we need quirk resume should double check if a
quirk should be called in resume or resume_early. I changed some per my
understanding, but can't make sure I fixed all.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10 10:59:46 -07:00
Linus Torvalds a442ac512f Clean up 'print_fn_descriptor_symbol()' types
Everybody wants to pass it a function pointer, and in fact, that is what
you _must_ pass it for it to make sense (since it knows that ia64 and
ppc64 use descriptors for function pointers and fetches the actual
address from there).

So don't make the argument be a 'unsigned long' and force everybody to
add a cast.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-15 17:50:37 -07:00
Björn Krombholz 439a7733e8 PCI: enable nv_msi_ht_cap_quirk for ALi bridges
This applies the NVidia MSI enabled flag for HT capable devices quirk
to ALi bridges as well.

As described in more detail in http://bugzilla.kernel.org/show_bug.cgi?id=10667
this is required for my board which is using an nForce 3 250Gb chipset with an
ALi M1695 northbridge.

It fixes a regression introduced in 2.6.24 that made the internal NIC of the
board unusable (MSI initialisation of the NIC but disabled MSI on the
northbridge devices.

Signed-off-by: Björn Krombholz <fox.box@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-05-13 09:51:54 -07:00
Tim Yamin bc04327456 PCI: Update VIA CX700 quirk
This follows up 53a9bf4267. Some newer
CX700 BIOSes from our vendor have PCI Bus Parking disabled but PCI
Master read caching enabled. This creates problems such as system
freezing when both the network controller and the USB controller are
active and one of them is pretty busy (e.g. heavy network traffic).

This patch separates the checks and both the bus parking and the read
caching are disabled independently if either is enabled by the BIOS.

Signed-off-by: Tim Yamin <tim.yamin@zonbu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-20 21:47:07 -07:00
Bjorn Helgaas 0255f543d9 PCI: simplify quirk debug output
print_fn_descriptor_symbol() prints the address if we don't have a symbol,
so no need to print both.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-20 21:47:06 -07:00
Jean Delvare a99acc832d pci: revert SMBus unhide on HP Compaq nx6110
This reverts commit 3c0a654e39 and
fixes kernel bug #10245:

	http://bugzilla.kernel.org/show_bug.cgi?id=10245

The HP Compaq nc6120 has the same PCI sub-device ID as the nx6110, and the
SMBus is used by ACPI for thermal management on the nc6120, so Linux should
not attach a native driver to it.  This means that this quirk is unsafe and
has to be removed.

I also added a comment to help developers realize that adding new IDs to this
SMBus unhiding quirk table should be done only with great care, and in
particular only after checking that ACPI is not making use of the SMBus.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Tomasz Koprowski <tomek@koprowski.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-28 14:45:22 -07:00
Bjorn Helgaas 415b6d0e89 PCI: consolidate duplicated MSI enable functions
Two recent patches added basically the same code to turn on
HT MSI mapping:

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6bae1d96c6d7dde078994f6cb98235fd46f8736b
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=9dc625e72309e1c919ea3e7f51d0ffca96123787

There's no need to have both, so this patch removes one copy.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04 15:07:03 -08:00
Bjorn Helgaas d6505a5236 PCI: use dev_printk in quirk messages
Convert quirk printks to dev_printk().

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04 15:07:02 -08:00
Peer Chen 9dc625e723 PCI: quirks: set 'En' bit of MSI Mapping for devices onHT-based nvidia platform
According to HT spec, to get message interrupt from devices mapped to HT
interrupt message, the 'En' bit of MSI Mapping capability need to be set.
The patch do this setting in quirks code for the devices on HT-based nvidia
platform.

[akpm@linux-foundation.org: coding-style fixes]

Signed-off-by: Andy Currid <acurrid@nvidia.com>
Signed-off-by: Peer Chen <pchen@nvidia.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-21 15:34:37 -08:00
Crane Cai 05a7d22b9f PCI: AMD SATA IDE mode quirk
PCI: modify SATA IDE mode quirk
When initialize and resume, SB600/700/800 need to set SATA mode
correctly.

Signed-off-by: Crane Cai <crane.cai@amd.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-21 15:34:35 -08:00
Shane Huang 4600c9d74e PCI: modify SB700 SATA MSI quirk
SB700 SATA MSI bug will be fixed in SB700 revision A21 at hardware
level, but the SB700 revision older than A21 will also be found in the
market.  This patch modify the original quirk commit
bc38b411fe instead of withdrawing it.
The patch also removes quirk to 0x4395 because 0x4395 is SB800 device
ID.

Signed-off-by: Shane Huang <shane.huang@amd.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:30 -08:00
bjorn.helgaas@hp.com f0fda801da PCI: use dev_printk in quirk messages
Convert quirk printks to dev_printk().

I made the MSI disable messages a little more consistent:

    - always use "disabled", not "deactivated"
    - specify "device MSI disabled" or "subordinate MSI disabled" when
      disabling MSI for only a specific device or subordinate bus

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:26 -08:00
bjorn.helgaas@hp.com 9f23ed3b94 PCI: print quirk name in debug messages
Instead of printing this:

    PCI: Calling quirk c023b250 for 0000:00:00.0

we can print this:

    pci 0000:00:00.0: calling quirk 0xc023b270: quirk_cardbus_legacy+0x0/0x30()

The address is superfluous because sprint_symbol() includes the
address if the symbol lookup fails, but this is the same style used
in do_initcalls() and pnp_fixup_device().

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:26 -08:00
Ivan Kokshaysky e64aeccbec PCI: fix for quirk_e100_interrupt()
Check that the e100 is in the D0 power state. If it's not, it won't
respond to MMIO accesses and we end up with master-abort machine
checks on some platforms.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:26 -08:00
Sebastien Dugue 6bae1d96c6 PCI: quirk: enable MSI Mapping on HT1000
Add a quirk to enable the MSI mapping capability on HyperTransport bridges.

Wire Broadcom's HT1000 to use the quirk.

Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andy Currid <acurrid@nvidia.com>
Cc: Peer Chen <pchen@nvidia.com>
Cc: Prakash Punnoor <prakash@punnoor.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michael Chan <mchan@broadcom.com>
Cc: Greg KH <greg@kroah.com>
Cc: Andy Currid <acurrid@nvidia.com>
Cc: Peer Chen <pchen@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:25 -08:00
Jean Delvare 677cc6443b PCI: Unhide the SMBus on the HP xw4100
Unhide the SMBus on the HP xw4100. This gives access to a hardware
monitoring chip (ADT7463) and to the memory module SPD EEPROMs. I
checked that ACPI wasn't accessing the SMBus, so it should be safe.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:22 -08:00
Andrew Morton 652c538eb5 PCI: drivers/pci/quirks.c: coding-style cleanup
Remove lots of space-before-) instances.  Perhaps these were a workaround for
problems in some long-dead cpp version.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:21 -08:00
Tim Yamin 53a9bf4267 PCI: VIA CX700 quirk to disable PCI Bus Parking
PCI Bus Parking and PCI Master read caching on the VIA CX700 is buggy and
can lead to problems such as USB2.0 packet loss if a VT6212L controller
is on the PCI bus. It's disabled by default, but some BIOSes turn these
features on and this patch reverts the configuration to the safe defaults.

Signed-off-by: Tim Yamin <tim.yamin@zonbu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:20 -08:00
Auke Kok 2b1afa87e1 PCI: quirk_vialatency: Omit reading pci revision ID
Don't read the revision ID unnecessary since the PCI subsystem
fills this field in already.

Updated to fix a thinko bug in a previously sent patch.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 15:04:20 -08:00
Zhao Yakui d1ec7298fc ACPI: apply quirk_ich6_lpc_acpi to more ICH8 and ICH9
It is important that these resources be reserved
to avoid conflicts with well known ACPI registers.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-01-11 00:24:55 -05:00
David Miller 5257dca0bd PCI: Remove 3 incorrect MSI quirks.
Now that we have dealt with the real issue, in that some ATI SATA and
USB controllers needed the INTX_DISABLE quirk, we can remove these AMD
chipset global MSI disabling quirks.

This reverts three changesets:

4be8f90643 (PCI: disable MSI on RS690)
aea6a433f5 (PCI: disable MSI on RD580)
f122392f67 (PCI: disable MSI on RX790)

This is based upon testing and feedback from
Shane Huang <Shane.Huang@amd.com>.

Cc: Shane Huang <Shane.Huang@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:17 -08:00
David Miller bc38b411fe PCI: Add MSI INTX_DISABLE quirks for ATI SB700/800 SATA and IXP SB400 USB
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:16 -08:00
David Miller ba698ad4b7 PCI: Add quirk for devices which disable MSI when INTX_DISABLE is set.
A reasonably common problem with some devices is that they will
disable MSI generation when the INTX_DISABLE bit is set in the
PCI_COMMAND register.

Quirk this explicitly, guarding the pci_intx() calls in msi.c with
this quirk indication.

The first entries for this quirk are for 5714 and 5780 Tigon3 chips,
and thus we can remove the workaround code from the tg3.c driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:16 -08:00
David Miller 1d84b5424e PCI: Add MSI quirk for ServerWorks HT1000 PCIX bridge.
This is the fix for the following problem:

https://bugzilla.redhat.com/show_bug.cgi?id=227657

The bnx2 device 5706 complains about MSI not working behind a
ServerWorks HT1000 PCIX bridge. An earlier commit to fix the problem:

e3008dedff4bdc96a5f67224cd3d8d12237082a0:

"PCI: disable MSI by default on systems with Serverworks HT1000 chips"

was not entirely correct, and has been reverted.

MSI does not work on the PCIX bus because the BIOS did not set the
HT_MSI_FLAGS_ENABLE bit in the HyperTransport MSI capability on the
bridge.  We use the existing quirk_msi_ht_cap() to detect the problem
and disable MSI in all buses behind it.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Cc: Anantha Subramanyam <ananth@broadcom.com>
Cc: Naren Sankar <nsankar@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:16 -08:00
David Miller 2cc31879f8 PCI: Revert "PCI: disable MSI by default on systems with Serverworks HT1000 chips"
This reverts commit e3008dedff.

The real bug was an INTX issue in the tg3 ethernet chip, and
cured by commit c129d962a66c76964954a98b38586ada82cf9381

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:16 -08:00
Tejun Heo 3a9e3a51dd jmicron: update quirk for JMB361/3/5/6
Set bits 0, 4, 5 and 7 of PCI configuration register 0x40 in the
quirk.  This has the following effects and is recommended by the
vendor.

* Force enable of IDE channels (used to be left alone as BIOS
  configured)

* Change initial phase behavior of PIO cycle such that the host pulls
  down the bus instead of tristating it.  Vendor recommends this
  setting.

The above settings are better for the current generation of
controllers and needed for the upcoming next generation.

Tested on JMB363.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Ethan Hsiao <ethanhsiao@jmicron.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-23 21:20:02 -04:00
Johannes Goecke 346ca04d05 PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"
On the "MSI K8T Neo2-FIR" board the BIOS disables the onboard
soundcard, if a second PCI soundcard is present.

This patch sets the korrect register bit to enable the onboard sound.

Removed old code in /drivers/pci/quirks.c that only checks for the
PCI-ID and fires on any Board with VIA 8237.

New code in /arch/i386/pci/fixup.c checks the DMI-tables and only runs
on the specific board.


Signed-off-by: Johannes Goecke <goecke@upb.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 15:03:16 -07:00
Auke Kok 651472fbff PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 15:03:16 -07:00
Auke Kok aa288d4d6b PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Cc: Peter Oruba <peter.oruba@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 15:03:16 -07:00
Benjamin Herrenschmidt 1bef7dc00c Fix bogus PCI quirk for e100
Linas reported me that some machines were crashing at boot in
quirk_e100_interrupt. It appears that this quirk is doing an ioremap
directly on a PCI BAR value, which isn't legal and will cause all sorts
of bad things to happen on architectures where PCI BARs don't directly
match processor bus addresses.

This fixes it by using the proper PCI resources instead which is possible
since the quirk has been moved by a previous commit to happen late enough
for that.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-28 16:21:10 -07:00
gw.kernel@tnode.com d7698edca8 PCI: unhide SMBus on Compaq Deskpro EP 401963-001 motherboard
PCI quirk to unhide SMBus on Compaq Deskpro EP 401963-001 (PCA# 010174) motherboard.

Signed-off-by: Greg White <gw.kernel@tnode.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-09-11 04:22:16 -07:00
Jean Delvare 18166c1a50 PCI: Run k8t_sound_hostbridge quirk only when needed
The k8t_sound_hostbridge PCI quick fires on my motherboard (Jetway
K8M8MS) while it shouldn't: the on-board sound chip is not disabled
and is working just fine. Looking at the code, I see that we are
running the quirk for two distinct register values (0x88 and 0xc8)
and then clear bit 6 (0x40). However value 0x88 already has bit 6
cleared so this is a no-op. This is what happens on my board. Thus I
believe that the quirk should only be run for register value 0xc8.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-08-22 14:48:41 -07:00
Tejun Heo f122392f67 PCI: disable MSI on RX790
RX790 can't do MSI like its predecessors.  Disable MSI on RX790.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-08-22 14:48:41 -07:00
Tejun Heo aea6a433f5 PCI: disable MSI on RD580
RD580 can't do MSI like its predecessors.  Disable MSI on RD580.

Signed-off-by: Tejun Heo <teheo@suse.de>
CC: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-08-22 14:48:41 -07:00
Tejun Heo 4be8f90643 PCI: disable MSI on RS690
RS690 can't do MSI like its predecessors.  Disable MSI on RS690.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Henry Su <henry.su@amd.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-08-22 14:48:41 -07:00
Marian Balakowicz 4e68fc97b1 PCI: quirk_e100_interrupt() called too early
quirk_e100_interrupts() is called after PCI controller is initialized
and before PCI bus enumeration is performed. On some powerpc platforms
which modify PCI controller configuration and set different MEM and IO
windows than those set by firmware quirk_e100_interrupt() is causing
kernel panic as it tries to read from device BAR0 offets which at this
time points to a invalid PCI window (set by firmware).

This patch delays the quirk_100_interrupt() to pci_fixup_final phase,
which happens after bus enumeration and before PCI enable and
device driver initialization.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-08-22 14:48:40 -07:00
Andrew Morton b7b095c154 PCI: pci-x-pci-express-read-control-interfaces cleanups
- remove unneeded local

- 80-col fix

Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:11 -07:00
Auke Kok 44c10138fd PCI: Change all drivers to use pci_device->revision
Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:10 -07:00
Peter Oruba d556ad4bbe PCI: add PCI-X/PCI-Express read control interfaces
This patch introduces an interface to read and write PCI-X / PCI-Express 
maximum read byte count values from PCI config space. There is a second 
function that returns the maximum _designed_ read byte count, which marks the 
maximum value for a device, since some drivers try to set MMRBC to the 
highest allowed value and rely on such a function.

Based on patch set by Stephen Hemminger <shemminger@linux-foundation.org>

Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Peter Oruba <peter.oruba@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:07 -07:00
Jay Cliburn 184b812f7d PCI: quirk disable MSI on via vt3351
The Via VT3351 APIC does not play well with MSI and unleashes a flood
of APIC errors when MSI is used to deliver interrupts.  The problem
was recently exposed when the atl1 network device driver, which enables
MSI by default, stimulated APIC errors on an Asus M2V mainboard, which
employs the Via VT3351.
See http://bugzilla.kernel.org/show_bug.cgi?id=8472 for additional
details on this bug.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-31 16:56:37 -07:00
Andy Gospodarek e3008dedff PCI: disable MSI by default on systems with Serverworks HT1000 chips
I've been seeing lots of messages like these:

eth0: No interrupt was generated using MSI, switching to INTx mode.  Please
report this failure to the PCI maintainer and include system chipset
information.

On several systems that use the following Severworks HT1000 (also sometimes
labeled as a Broadcom chipset as well) bridge chips.  It doesn't appear MSI
works well (if at all) on these systems.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-31 16:56:36 -07:00
Tejun Heo ebdf7d399e pci-quirks: fix MSI disabling on RS400-200 and RS480
Commit c0affe9db4 doesn't work because
the host controller is being quirked not a PCI bridge.  This patch
reverts the commit, rename quirk_svw_msi() to quirk_disable_all_msi()
and use it instead.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Matias Alejandro Torres <torresmat@gmail.com>
Cc: Greg K-H <greg@kroah.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-31 07:58:13 -07:00
Henry Su 823777181b Add the combined mode for ATI SB700
Besides those modes in ATI SB600 SATA controller, ATI SB700 supports one
more mode:the combined mode.

The combined mode is a Legacy IDE mode used for compatibility with some old
OS without AHCI driver, but now it is not necessary for Linux since the
kernel has supported AHCI.

Signed-off-by: Luugi Marsan <luugi.marsan@amd.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-05-11 18:16:01 -04:00
Tejun Heo c0affe9db4 pci-quirks: disable MSI on RS400-200 and RS480
MSI doesn't work on RS400-200 and RS480 requiring pci=nomsi kernel
boot parameter for ahci to work.  This patch disables MSI on those
chips.

  http://thread.gmane.org/gmane.linux.ide/17820
  http://thread.gmane.org/gmane.linux.ide/17516
  https://bugzilla.novell.com/show_bug.cgi?id=263893

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:43 -07:00
Jeff Garzik 8cdfb29c0c libata/IDE: remove combined mode quirk
Both old-IDE and libata should be able handle all controllers and
devices found using normal resource reservation methods.

This eliminates the awful, low-performing split-driver configuration
where old-IDE drove the PATA portion of a PCI device, in PIO-only mode,
and libata drove the SATA portion of the /same/ PCI device, in DMA mode.
Typically vendors would ship SATA hard drive / PATA optical
configuration, which would lend itself to slow (PIO-only) CD-ROM
performance.

For Intel users running in combined mode, it is now wholly dependent on
your driver choice (potentially link order, if you compile both drivers
in) whether old-IDE or libata will drive your hardware.

In either case, you will get full performance from both SATA and PATA
ports now, without having to pass a kernel command line parameter.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:59 -04:00
Jean Delvare 9208ee8286 PCI: Stop unhiding the SMBus on Toshiba laptops
It was found that the Toshiba laptops with hidden Intel SMBus have SMM
code handling the thermal management which accesses the SMBus. Thus it
is not safe to unhide it and let Linux access it. We have to leave the
SMBus hidden. SMM is a pain, really.

This fixes bugs #6315 and #6395, for good this time.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-26 14:13:07 -07:00
Eric W. Biederman f5f2b13129 [PATCH] msi: sanely support hardware level msi disabling
In some cases when we are not using msi we need a way to ensure that the
hardware does not have an msi capability enabled.  Currently the code has been
calling disable_msi_mode to try and achieve that.  However disable_msi_mode
has several other side effects and is only available when msi support is
compiled in so it isn't really appropriate.

Instead this patch implements pci_msi_off which disables all msi and msix
capabilities unconditionally with no additional side effects.

pci_disable_device was redundantly clearing the bus master enable flag and
clearing the msi enable bit.  A device that is not allowed to perform bus
mastering operations cannot generate intx or msi interrupt messages as those
are essentially a special case of dma, and require bus mastering.  So the call
in pci_disable_device to disable msi capabilities was redundant.

quirk_pcie_pxh also called disable_msi_mode and is updated to use pci_msi_off.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-05 07:57:50 -08:00
Tejun Heo e34bb370de ahci/pata_jmicron: match class not function number
Make jmiron_ata quirk update pdev->class after programming the device
and update ahci and pata_jmicron such that they match class code
instead of checking function number manually.  For ahci, it matches
for vendor and class.  For pata_jmicron, it matches vendor, device and
class as IDE class isn't as well defined as AHCI class.

This makes jmicron device matching more conventional and script
friendly.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:19:45 -05:00