17-eeh-slot-marking-bug.patch

A device that experiences a PCI outage may be just one deivce out
of many that was affected. In order to avoid repeated reports of
a failure, the entire tree of affected devices should be marked
as failed. This patch marks up the entire tree.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Gcc 4 doesn't like being told to inline a recursive function...
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This patch merges platform codes.  systemcfg->platform is no longer used,
systemcfg use in general is deprecated as much as possible (and renamed
_systemcfg before it gets completely moved elsewhere in a future patch),
_machine is now used on ppc64 along as ppc32.  Platform codes aren't gone
yet but we are getting a step closer. A bunch of asm code in head[_64].S
is also turned into C code.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

14-eeh-device-bar-save.patch

After a PCI device has been resest, the device BAR's and other config
space info must be restored to the same state as they were in when
the firmware first handed us this device.  This will allow the
PCI device driver, when restarted, to correctly recognize and set up
the device.

Tis patch saves the device config space as early as reasonable after
the firmware has handed over the device.  Te state resore funcion
is inteded for use by the EEH recovery routines.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

13-eeh-recovery-support-routines.patch

EEH Recovery support routines

This patch adds routines required to help drive the recovery of
EEH-frozen slots.  The main function is to drive the PCI #RST
signal line high for a qurter of a second, and then allow for
a second & a half of settle time.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

12-eeh-event-dispatcher.patch

ppc64: EEH Recovery dispatcher thread

This patch adds a mechanism to create recovery threads when an
EEH event is received.  Since an EEH freeze state may be detected
within an interrupt context, we need to get out of the interrupt
context before starting recovery. This dispatcher does this in
two steps: first, it uses a workqueue to get out, and then
lanuches a kernel thread, so that the recovery routine can
sleep for exteded periods without upseting the keventd.

A kernel thread is created with each EEH event, rather than
having one long-running daemon started at boot time.  This is
because it is anticipated that EEH events will be very rare
(very very rare, ideally) and so its pointless to cluter the
process tables with a daemon that will almost never run.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

11-eeh-move-to-powerpc.patch

Move arch/ppc64/kernel/eeh.c to arch//powerpc/platforms/pseries/eeh.c
No other changes (except for Makefile to build it)
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

10-EEH-enable-bugfix.patch

Bugfix: With the curent linux-2.6.14-rc2-git6, EEH errors are
ignored because thier detection requires an unused, uninitialized
flag to be set.  This patch removes the unused flag.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

08-eeh-spin-counter.patch

One an EEH event is triggers, all further I/O to a device is blocked (until
reset).  Bad device drivers may end up spinning in their interrupt handlers,
trying to read an interrupt status register that will never change state.
This patch moves that spin counter to a per-device structure, and adds
some diagnostic prints to help locate the bad driver.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

07-eeh-report-race.patch

When a PCI slot is isolated, all PCI functions under that slot are affected.
If hese functions have separate device drivers, the EEH isolation event
might be reported multiple times. This patch adds a lock to prevent the
racing of such multiple reports. It also marks every device under the slot
as having experienced an EEH event, so that multiple reports may be
recognized more easily.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

06-eeh-empty-slot-error.patch

Performing PCI config-space reads to empty PCI slots can lead to reports of
"permanent failure" from the firmware. Ignore permanent failures on empty slots.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

05-eeh-slot-error-detail.patch

This patch encapsulates a section of code that reports the EEH event.
The new subroutine can be used in several places to report the error.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

04-eeh-statistics.patch

This minor patch adds some statistics-gathering counters that allow the
behaviour of the EEH subsystem o be monitored. While far from perfect,
it does provide a rudimentary device that makes understanding of the
current state of the system a bit easier.
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

03-eeh-addr-cache-cleanup.patch

This is a minor patch to clean up a buglet related to the PCI address cache.
(The buglet doesn't manifes itself unless there are also bugs elsewhere,
which is why its minor.).  Also:

-- Improved debug printing.
-- Declare some private routines as static
-- Adds reference counting to struct pci_dn->pcidev structure
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

02-eeh-minor-cleanup.patch

This patch performs some minor cleanup of the eeh.c file, including:
-- trim some trailing whitespace
-- remove extraneous #includes
-- use the macro PCI_DN uniformly, instead of the void pointer chase.
-- typos in comments
-- improved debug printk's
Signed-off-by: NLinas Vepstas <linas@linas.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

01-pci-dn-uniformization.patch

This patch changes the rtas_pci interface to use the new struct pci_dn
structure for two routines that work with pci device nodes.

This patch also does some minor janitorial work: it uses some handy macros
and cleans up some trailing whitespace in the affected file.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

and rename it to pci.c.  This also required moving
arch/ppc64/kernel/pci.h into include/asm-powerpc (called
ppc-pci.h.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>

This patch pulls the PCI-related junk out of struct device_node and
puts it in a separate structure, struct pci_dn.  The device_node now
just has a void * pointer in it, which points to a struct pci_dn for
nodes that represent PCI devices.  It could potentially be used in
future for device-specific data for other sorts of devices, such as
virtual I/O devices.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This patch removes CONFIG_PCI_NAMES.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Currently ppc64 has two mm_structs for the kernel, init_mm and also
ioremap_mm.  The latter really isn't necessary: this patch abolishes it,
instead restricting vmallocs to the lower 1TB of the init_mm's range and
placing io mappings in the upper 1TB.  This simplifies the code in a number
of places and eliminates an unecessary set of pagetables.  It also tweaks
the unmap/free path a little, allowing us to remove the unmap_im_area() set
of page table walkers, replacing them with unmap_vm_area().
Signed-off-by: NDavid Gibson <dwg@au1.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!