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* EDAC: do not enable modules by defaultBorislav Petkov2009-06-10
| | | | | | | | | Prevent EDAC compilation units from being built by default and let the user explicitly select the needed modules. Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Tested-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: do not enable module by defaultBorislav Petkov2009-06-10
| | | | | | | | | While at it, fix a link failure when !K8_NB. Acked-by: Doug Thompson <dougthompson@xmission.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Tested-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add module registration routinesDoug Thompson2009-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | | Also, link into Kbuild by adding Kconfig and Makefile entries. Borislav: - Kconfig/Makefile splitting - use zero-sized arrays for the sysfs attrs if not enabled - rename sysfs attrs to more conform values - shorten CONFIG_ names - make multiple structure members assignment vertically aligned - fix/cleanup comments - fix function return value patterns - fix err labels - fix a memleak bug caught by Ingo - remove the NUMA dependency and use num_k8_northbrides for initializing a driver instance per NB. - do not copy the pvt contents into the mci struct in amd64_init_2nd_stage() and save it in the mci->pvt_info void ptr instead. - cleanup debug calls - simplify amd64_setup_pci_device() Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add ECC reporting initializersDoug Thompson2009-06-10
| | | | | | | | | | | | | | | Borislav: - convert to the new {rd|wr}msr_on_cpus interfaces. - convert pvt->old_mcgctl to a bitmask thus saving some bytes - fix/cleanup comments - fix function return value patterns - add a proper bugfix found by Doug to amd64_check_ecc_enabled where we missed checking for the ECC enabled bit in NB CFG. - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add EDAC core-related initializersDoug Thompson2009-06-10
| | | | | | | | | | | | | | Borislav: - add a amd64_free_mc_sibling_devices() helper instead of opencoding the release-path. - fix/cleanup comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add error decoding logicDoug Thompson2009-06-10
| | | | | | | | | | | | | Borislav: - fold amd64_error_info_valid() into its only user - fix/cleanup comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add ECC chipkill syndrome mapping tableDoug Thompson2009-06-10
| | | | | | | | | | | Borislav: - fix comments - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add per-family descriptorsDoug Thompson2009-06-10
| | | | | | | | | | | Borislav: - fix comments - fix function return value patterns Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add F10h-and-later methods-p3Doug Thompson2009-06-10
| | | | | | | | | | | | | | | | Borislav: - compute dct_sel_base_off in f10_match_to_this_node() correctly since it cannot be assumed that the Reserved bits are zero and they have to be masked out instead. - cleanup, remove StinkyIdentifiers, simplify logic - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add F10h-and-later methods-p2Doug Thompson2009-06-10
| | | | | | | | | | | | | | | Borislav: - fix a wrong negation in f10_determine_base_addr_offset() - fix a wrong mask in f10_determine_base_addr_offset() which should select DctSelBaseAddr[31:11] and not [31:16] as it was before - remove StinkyIdentifiers, trivially simplify code. - fix/cleanup comments - fix function return value patterns Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add F10h-and-later methods-p1Doug Thompson2009-06-10
| | | | | | | | | | | | | | | Borislav: Fail f10_early_channel_count() if error encountered while reading a NB register since those cached register contents are accessed afterwards. - fix/cleanup comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add k8-specific methodsDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - fix/cleanup/move comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: assign DRAM chip select base and mask in a family-specific wayDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - cleanup/fix comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add helper to dump relevant registersDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - cleanup/fix comments - fix function return value patterns - cleanup dbg calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add DRAM address type conversion facilitiesDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - cleanup/fix comments, add BKDG refs - fix function return value patterns - cleanup dbg calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add functionality to compute the DRAM holeDoug Thompson2009-06-10
| | | | | | | | | | | Borislav: - cleanup/fix comments, add BKDG refs - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add sys addr to memory controller mapping helpersDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - cleanup comments - cleanup debug calls - simplify find_mc_by_sys_addr's exit path Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add memory scrubber interfaceDoug Thompson2009-06-10
| | | | | | | | | | | Borislav: - fix/cleanup comments - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add MCA error typesDoug Thompson2009-06-10
| | | | | | | | | Borislav: - cleanup comments Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add DRAM error injection logic using sysfsDoug Thompson2009-06-10
| | | | | | | | | | | | Borislav: - rename sysfs attrs to more conform names - cleanup/fix comments according to BKDG text - fix function return value patterns - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add debugging/testing codeDoug Thompson2009-06-10
| | | | | | | | | | | | | | | | | This is for dumping different registers and testing the address mapping logic using the ECC syndromes. Borislav: - split sysfs attrs per file - use more conform names for the sysfs attrs - fix function return value patterns - cleanup/fix comments - cleanup debug calls Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* amd64_edac: add driver headerDoug Thompson2009-06-10
| | | | | | | | | | Borislav: - remove register bit descriptions (complete text in BKDG) - cleanup and remove excessive/superfluous comments Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* edac: fold __func__ into edac_debug_printkBorislav Petkov2009-06-10
| | | | | | | | This shortens debugfX() calls a bit. Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com> CC: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
* edac: AMD8111 & AMD8131 Kconfig fixupHarry Ciao2009-05-29
| | | | | | | | | | | The amd8111_edac.c driver will fail allmodconfig on architectures other than PPC, introduce Kconfig dependency to avoid this, since both AMD8111 and AMD8131 chips are only adopted on Maple so far. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 & AMD8131 use dev_name()Harry Ciao2009-05-29
| | | | | | | | | | The "bus_id" member in the device structure has been obsolete, use dev_name() instead. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: ppc mpc85xx fix mc err detectDave Jiang2009-04-21
| | | | | | | | | | | | | | | Error found by Jeff Haran. The error detect register is 0s when no errors are detected. The check code is incorrect, so reverse check sense. Reported-by: Jeff Haran <jharan@Brocade.COM> Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: use to_delayed_work()Jean Delvare2009-04-13
| | | | | | | | | | | | | | | The edac-core driver includes code which assumes that the work_struct which is included in every delayed_work is the first member of that structure. This is currently the case but might change in the future, so use to_delayed_work() instead, which doesn't make such an assumption. linux-2.6.30-rc1 has the to_delayed_work() function that will allow this patch to work Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: fix local pci_write_bits32Jeff Haran2009-04-13
| | | | | | | | | | | | | Fix the edac local pci_write_bits32 to properly note the 'escape' mask if all ones in a 32-bit word. Currently no consumer of this function uses that mask, so there is no danger to existing code. Signed-off-by: Jeff Haran <jharan@Brocade.COM> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver Kconfig & MakefileHarry Ciao2009-04-02
| | | | | | | | | Introduce Kconfig and Makefile options for AMD8111 EDAC driver. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver Kconfig & MakefileHarry Ciao2009-04-02
| | | | | | | | | Introduce Kconfig and Makefile options for AMD8131 EDAC driver. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver source fileHarry Ciao2009-04-02
| | | | | | | | | | | Introduce AMD8131 EDAC driver source file, which makes use of error detections on the PCI-X Bridge Controllers on the AMD8131 HyperTransport PCI-X Tunnel. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8131 driver header fileHarry Ciao2009-04-02
| | | | | | | | | | | Introduce AMD8131 EDAC driver header file, which adds register and bits definitions for the PCI-X Bridge Controller on the AMD8131 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: Add edac_pci_alloc_index()Harry Ciao2009-04-02
| | | | | | | | | | | | Add edac_pci_alloc_index(), because for MAPLE platform there may exist several EDAC driver modules that could make use of edac_pci_ctl_info structure at the same time. The index allocation for these structures should be taken care of by EDAC core. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver source fileHarry Ciao2009-04-02
| | | | | | | | | | | Introduce AMD8111 EDAC driver source file, which makes use of error detections on the LPC Bridge Controller and PCI Bridge Controller on the AMD8111 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: AMD8111 driver header fileHarry Ciao2009-04-02
| | | | | | | | | | | Introduce AMD8111 EDAC driver header file, which adds register and bits definitions for the LPC Bridge Controller and PCI Bridge Controller on the AMD8111 HyperTransport I/O Hub. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: new ppc4xx driver moduleGrant Erickson2009-04-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for an EDAC memory controller adaptation driver for the "ibm,sdram-4xx-ddr2" ECC controller realized in the AMCC PowerPC 405EX[r]. At present, this driver has been developed and tested against the controller realization in the AMCC PPC405EX[r] on the AMCC Kilauea and Haleakala boards (256 MiB w/o ECC memory soldered onto the board) and a proprietary board based on those designs (128 MiB ECC memory, also soldered onto the board). In the future, dynamic feature detection and handling needs to be added for the other realizations of this controller found in the 440SP, 440SPe, 460EX, 460GT and 460SX. Eventually, this driver will likely be evolved and adapted to the above variant realizations of this controller as well as broken apart to handle the other known ECC-capable controllers prevalent in other PPC4xx processors: - IBM SDRAM (405GP, 405CR and 405EP) "ibm,sdram-4xx" - IBM DDR1 (440GP, 440GX, 440EP and 440GR) "ibm,sdram-4xx-ddr" - Denali DDR1/DDR2 (440EPX and 440GRX) "denali,sdram-4xx-ddr2" [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Grant Erickson <gerickson@nuovations.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: remove EDAC's experimental statusDoug Thompson2009-04-02
| | | | | | | | | | After 3 years, this is a patch to remove the EXPERIMENTAL tag on EDAC. We now have many module drivers submitters in EDAC and believe EDAC is no longer EXPERIMENTAL Signed-off-by: Doug Thompson <dougthompson@xmission.com Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: add more verbose debug infoHitoshi Mitake2009-04-02
| | | | | | | | | | | | | | | | | | | | A patch for making a debugging information more verbose for use in development debugging. By enabling the new option "More verbose debugging", information about source file and line number will be added to debugging message. This is sample output, EDAC MC0: Giving out device to 'e7xxx_edac' 'E7205': DEV 0000:00:00.0 EDAC DEBUG: in drivers/edac/edac_pci.c, line at 48: edac_pci_alloc_ctl_info() EDAC DEBUG: in drivers/edac/edac_pci.c, line at 334: edac_pci_add_device() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-24
| | | | | | | Cc: dougthompson@xmission.com Cc: bluesmoke-devel@lists.sourceforge.net Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
* powerpc: More printing warning fixes for the l64 to ll64 conversionStephen Rothwell2009-01-28
| | | | | | | | | | | | | These are all powerpc specific drivers. res.start in fsl_elbc_nand.c needs to be cast since it may be either 32 or 64 bit. Thanks to Scott Wood for noticing. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Arnd Bergmann <arnd@arndb.de> call_edac bits in particular Acked-by: Olof Johansson <olof@lixom.net> pasemi_nand peices Acked-by: Scott Wood <scottwood@freescale.com> fsl_elbc fixes Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* edac: driver for i5400 MCH (update)Mauro Carvalho Chehab2009-01-06
| | | | | | | | Signed-off-by: Ben Woodard <woodard@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: driver for i5400 MCH (Seaburg)Mauro Carvalho Chehab2009-01-06
| | | | | | | | | | | | EDAC driver for i5400 MCH (Seaburg) This driver adds support for i5400 MCH chipset. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Ben Woodard <woodard@redhat.com> Cc: Doug Thompson <norsk5@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: fix mpc85xx and add mpc8536 mpc8560Kumar Gala2009-01-06
| | | | | | | | | | | | | | | | | All other compatibles that are uniquely identifying the processor use a prefix of the form fsl,mpc85...'. We add support for it so we can deprecate the older 'fsl,85...' that was improperly used here. Additionally added mpc8536 & mpc8560 to the compatible lists. This patch is based on Nate's 8572 patch. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Acked-by: Dave Jiang <djiang@mvista.com> Cc: Nate Case <ncase@xes-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: struct device: replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-01-06
| | | | | | | | | | | | | | This patch is part of a larger patch series which will remove the "char bus_id[20]" name string from struct device. The device name is managed in the kobject anyway, and without any size limitation, and just needlessly copied into "struct device". [akpm@linux-foundation.org: coding-style fixes] Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pci: use pci_ioremap_bar() in drivers/edacArjan van de Ven2009-01-06
| | | | | | | | | | | | Use the newly introduced pci_ioremap_bar() function in drivers/edac. pci_ioremap_bar() just takes a pci device and a bar number, with the goal of making it really hard to get wrong, while also having a central place to stick sanity checks. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'next' of ↵Linus Torvalds2008-12-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits) powerpc/44x: Support 16K/64K base page sizes on 44x powerpc: Force memory size to be a multiple of PAGE_SIZE powerpc/32: Wire up the trampoline code for kdump powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M powerpc/32: Allow __ioremap on RAM addresses for kdump kernel powerpc/32: Setup OF properties for kdump powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs() powerpc: Prepare xmon_save_regs for use with kdump powerpc: Remove default kexec/crash_kernel ops assignments powerpc: Make default kexec/crash_kernel ops implicit powerpc: Setup OF properties for ppc32 kexec powerpc/pseries: Fix cpu hotplug powerpc: Fix KVM build on ppc440 powerpc/cell: add QPACE as a separate Cell platform powerpc/cell: fix build breakage with CONFIG_SPUFS disabled powerpc/mpc5200: fix error paths in PSC UART probe function powerpc/mpc5200: add rts/cts handling in PSC UART driver powerpc/mpc5200: Make PSC UART driver update serial errors counters powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver ... Fix trivial conflict in drivers/char/Makefile as per Paul's directions
| * powerpc/cell: add QPACE as a separate Cell platformBenjamin Krill2008-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the QPACE (Chromodynamics Parallel Computing on the Cell Broadband Engine) platform doesn't use a iommu, doesn't have PCI devices and a MPIC much lesser setup and configurations are needed. So far all devices are detected as OF device. A notifier function is used to set the dma_ops for the of_platform bus. Further this patch splits the PPC_CELL_NATIVE into PPC_CELL_COMMON which are parts that are shared with the QPACE platform and the rest. Signed-off-by: Benjamin Krill <ben@codiert.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | edac: fix edac core deadlock when removing a deviceHarry Ciao2008-12-23
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When deleting an edac device, we have to wait for its edac_dev.work to be completed before deleting the whole edac_dev structure. Since we have no idea which work in current edac_poller's workqueue is the work we are conerned about, we wait for all work in the edac_poller's workqueue to be proceseed. This is done via flush_cpu_workqueue() which inserts a wq_barrier into the tail of the workqueue and then sleeping on the completion of this wq_barrier. The edac_poller will wake up sleepers when it is found. EDAC core creates only one kernel worker thread, edac_poller, to run the works of all current edac devices. They share the same callback function of edac_device_workq_function(), which would grab the mutex of device_ctls_mutex first before it checks the device. This is exactly where edac_poller and rmmod would have a great chance to deadlock. In below call trace of rmmod > ... > edac_device_del_device > edac_device_workq_teardown > flush_workqueue > flush_cpu_workqueue, device_ctls_mutex would have already been grabbed by edac_device_del_device(). So, on one hand rmmod would sleep on the completion of a wq_barrier, holding device_ctls_mutex; on the other hand edac_poller would be blocked on the same mutex when it's running any one of works of existing edac evices(Note, this edac_dev.work is likely to be totally irrelevant to the one that is being removed right now)and never would have a chance to run the work of above wq_barrier to wake rmmod up. edac_device_workq_teardown() should not be called within the critical region of device_ctls_mutex. Just like is done in edac_pci_del_device() and edac_mc_del_mc(), where edac_pci_workq_teardown() and edac_mc_workq_teardown() are called after related mutex are released. Moreover, an edac_dev.work should check first if it is being removed. If this is the case, then it should bail out immediately. Since not all of existing edac devices are to be removed, this "shutting flag" should be contained to edac device being removed. The current edac_dev.op_state can be used to serve this purpose. The original deadlock problem and the solution have been witnessed and tested on actual hardware. Without the solution, rmmod an edac driver would result in below deadlock: root@localhost:/root> rmmod mv64x60_edac EDAC DEBUG: mv64x60_dma_err_remove() EDAC DEBUG: edac_device_del_device() EDAC DEBUG: find_edac_device_by_dev() (hang for a moment) INFO: task edac-poller:2030 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. edac-poller D 00000000 0 2030 2 Call Trace: [df159dc0] [c0071e3c] free_hot_cold_page+0x17c/0x304 (unreliable) [df159e80] [c000a024] __switch_to+0x6c/0xa0 [df159ea0] [c03587d8] schedule+0x2f4/0x4d8 [df159f00] [c03598a8] __mutex_lock_slowpath+0xa0/0x174 [df159f40] [e1030434] edac_device_workq_function+0x28/0xd8 [edac_core] [df159f60] [c003beb4] run_workqueue+0x114/0x218 [df159f90] [c003c674] worker_thread+0x5c/0xc8 [df159fd0] [c004106c] kthread+0x5c/0xa0 [df159ff0] [c0013538] original_kernel_thread+0x44/0x60 INFO: task rmmod:2062 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. rmmod D 0ff2c9fc 0 2062 1839 Call Trace: [df119c00] [c0437a74] 0xc0437a74 (unreliable) [df119cc0] [c000a024] __switch_to+0x6c/0xa0 [df119ce0] [c03587d8] schedule+0x2f4/0x4d8 [df119d40] [c03591dc] schedule_timeout+0xb0/0xf4 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i82875p_edac: fix module removeJarkko Lavinen2008-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix module removal bugs of i82875p_edac. Also i82975x_edac code seems to have the same module removal bugs as in i82875p_edac. The problems were: 1. In module removal i82875p_remove_one() is never called. Variable i82875p_registered is newer changed from 1, which guarantees i82875p_remove_one() is not called (and even if it were called, it would be called in wrong order). As a result, the edac_mc workque is not stopped and keeps probing. If kernel debugging options are not enabled, user may not notice anything going wrong. if debugging options are enabled and I do "rmmod i82875p_edac", I get: edac debug: edac_pci_workq_function() checking BUG: unable to handle kernel paging request at f882d16f ... call trace: [<f8834df3>] ? edac_mc_workq_function+0x55/0x7e [edac_core] [<c0233974>] ? run_workqueue+0xd7/0x1a5 [<c023392f>] ? run_workqueue+0x92/0x1a5 [<f8834d9e>] ? edac_mc_workq_function+0x0/0x7e [edac_core] [<c0233af9>] ? worker_thread+0xb7/0xc3 [<c0236a7b>] ? autoremove_wake_function+0x0/0x33 [<c0233a42>] ? worker_thread+0x0/0xc3 [<c0236809>] ? kthread+0x3b/0x61 [<c02367ce>] ? kthread+0x0/0x61 [<c0204587>] ? kernel_thread_helper+0x7/0x10 Fix for this is to get rid of needles variable i82875p_registered altogether and run i82875p_remove_one() *before* pci_unregister_driver(). 2. edac_mc_del_mc() uses mci after freeing mci edac_mc_del_mc() calls calls edac_remove_sysfs_mci_device(). The kobject refcount of mci drops to 0 and mci is freed. After this mci is accessed via debug print and i82875p_remove_one() still uses mci->pvt and tries to free mci again with edac_mc_free(). The fix for this is add kobject_get(&mci->edac_mci_kobj) after edac_mc_alloc(). Then the mci is still available after returning from edac_mc_del_mc() with refcount 1, and mci->pvt is still available. When i82875p_remove_one() finally calls edac_mc_free(), this will cause kobject_put() and mci is released properly. Signed-off-by: Jarkko Lavinen <jlavi@iki.fi> Cc: Doug Thompson <norsk5@yahoo.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i82875p_edac: fix overflow device resource setupJarkko Lavinen2008-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | When I do "modprobe i82875p_edac" on my Asus P4C800 MB on kernels 2.6.26 or later, the module load fails due to BAR 0 collision. On 2.6.25 the module loads just fine. The overflow device on the MB seems to be hidden and its resources are not allocated at normal PCI bus init. Log shows the missing resource problem: EDAC DEBUG: i82875p_probe1() PCI: 0000:00:06.0 reg 10 32bit mmio: [fecf0000, fecf0fff] pci 0000:00:06.0: device not available because of BAR 0 [0xfecf0000-0xfecf0fff] collisions EDAC i82875p: i82875p_setup_overfl_dev(): Failed to enable overflow device The patch below fixes this by calling pci_bus_assign_resources() after the overflow device is revealed and added to the bus. With this patch I am again able to load and use the module. Signed-off-by: Jarkko Lavinen <jlavi@iki.fi> Cc: Doug Thompson <norsk5@yahoo.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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