Have a method to make a couple with alloc_i7core_dev() previously
introduced. Using in pair will help proper resource handling.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
It's nice to have a method for a single purpose.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Since we need to pass the index of the entry, pass the table itself
instead of passing individual members of the table.
While here make it static.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
commit 47251b4d960bdfa648b0d06dbc6d445f41cb3906 have changed
the logic for unexplained reasons. It looks strange that it
can release i7core_dev without calling i7core_put_devices()
that releases i7core_dev->pdev.
Fix the part.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The legacy PCI probe sometimes cause hangs. Better to have it
disabled by default, and have a parameter to enable it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This is a nasty bug. Since kobject count will be reduced by zero by
edac_mc_del_mc(), and this triggers the kobj release method, the
mci memory will be freed automatically. So, all we have left is ctl_name,
as shown by enabling debug:
[ 80.822186] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1020: edac_remove_sysfs_mci_device() remove_link
[ 80.832590] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 1024: edac_remove_sysfs_mci_device() remove_mci_instance
[ 80.843776] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 640: edac_mci_control_release() mci instance idx=0 releasing
[ 80.855163] EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:3f:03.0
[ 80.862936] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 2089: (null): free structs
[ 80.871134] EDAC DEBUG: in drivers/edac/edac_mc.c, line at 238: edac_mc_free()
[ 80.878379] EDAC DEBUG: in drivers/edac/edac_mc_sysfs.c, line at 726: edac_mc_unregister_sysfs_main_kobj()
[ 80.888043] EDAC DEBUG: in drivers/edac/i7core_edac.c, line at 1232: drivers/edac/i7core_edac.c: i7core_put_devices()
Also, kfree(mci) shouldn't happen at the kobj.release, as it happens
when edac_remove_sysfs_mci_device() is called, but the logic is:
edac_remove_sysfs_mci_device(mci);
edac_printk(KERN_INFO, EDAC_MC,
"Removed device %d for %s %s: DEV %s\n", mci->mc_idx,
mci->mod_name, mci->ctl_name, edac_dev_name(mci));
So, as the edac_printk() needs the mci struct, this generates an OOPS.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
There are two groups of sysfs attributes: one for rdimm and another
for udimm. Instead of changing dynamically the unique static struct
for handling udimm's, declare two vars and make them constant.
This avoids the risk of having two or more memory controllers, each
needing a different set of attributes.
While here, use const on all places where it is applicable.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
edac_core: use const for constant sysfs arguments
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
With multi-sockets, more than one edac pci handler is enabled. Be sure to
un-register all instances.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Don't print failure to detect Core i7 EDAC facilities to the console at
boot time, most often occurring on Core i7 desktops and laptops.
Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As Nehalem/Nehalem-EP/Westmere devices uses several devices for the same
functionality (memory controller), the default way of proping devices doesn't
work. So, instead of a per-device probe, all devices should be probed at once.
This means that we should block any new attempt of probe, otherwise, it will
try to register the same device several times.
Acked-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
On Nehalem/Nehalem-EP/Westmere, the first QPI device is the last PCI bus.
The last bus is generally at 0x3f or 0xff, but there are also other systems
using different setups. For example, HP Z800 has 0x7f as the last bus.
This patch adds a logic to discover the last bus, dynamically detecting it
at runtime.
Acked-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This adds new PCI IDs for the Westmere's memory controller
devices and modifies the i7core_edac driver to be able to
probe both Nehalem and Westmere processors.
Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This fixes an error in function i7core_check_error
In commit ca9c90ba09 which converts the
driver to use double buffering, there is a change in the logic. Before,
if mce_count was zero, it skipped over a couple of statements and
finished out with a call to the *check_mc_ecc_err function. The current
code checks to see if mce_count is 0 and then exits.
This change reverts the behavior back to the original where if there are
no errors to report, we skip to the end and call the *check_mc_ecc_err
function.
This fix allows the driver to work again on my Nehalem based blades
again.
Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
It's called only from an __init function and is the only user
of pcibios_scan_specific_bus which will be marked as __devinit in
the next patch.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix build warning (missing header file) and
build error when CONFIG_SMP=n.
drivers/edac/i7core_edac.c:860: error: implicit declaration of function 'msleep'
drivers/edac/i7core_edac.c:1700: error: 'struct cpuinfo_x86' has no member named 'phys_proc_id'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Currently, only one PCI set of tables is allowed. This prevents using
the driver for other devices like Lynnfield, with have a different
set of PCI ID's.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix ringbuffer store logic.
While here, add a few comments to the code and remove the undesired
printk that could otherwise be called during NMI time.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Instead of displaying 3 values at the same var, break it into 3
different sysfs nodes:
/sys/devices/system/edac/mc/mc0/all_channel_counts/udimm0
/sys/devices/system/edac/mc/mc0/all_channel_counts/udimm1
/sys/devices/system/edac/mc/mc0/all_channel_counts/udimm2
For registered dimms, however, the error counters are already being
displayed at:
/sys/devices/system/edac/mc/mc0/csrow*/ce_count
So, there's no need to add any extra sysfs nodes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The old remove module stragegy didn't work on devices with multiple
cores, since only one PCI device is used to open all mc's, due to
Nehalem nature.
Also, it were based at pdev value. However, this doesn't point to the
pci device used at mci->dev.
So, instead, it unregisters all devices at once, deleting them from the
device list.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Instead of creating just one memory controller, create one per socket
(e. g. per Quick Link Path Interconnect).
This better reflects the Nehalem architecture.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Instead of using a static table assuming always 2 CPU sockets, allocate
space dynamically for Nehalem PCI devs.
This patch is part of a series of patches that changes i7core_edac to
allow more than 2 sockets and to properly report one memory controller
per socket.
