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* Revert "of_platform_driver noise on sparce"Linus Torvalds2008-12-01
| | | | | | | | | | This reverts commit e669dae6141ff97d3c7566207f5de3b487dcf837, since it is incomplete, and clashes with fuller patches and the sparc 32/64 unification effort. Requested-by: David Miller <davem@davemloft.net> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* of_platform_driver noise on sparceAl Viro2008-11-30
| | | | | | | | | switch to __init for those; unlike powerpc sparc has no hotplug support for that stuff and their ->probe() tends to call __init functions while being declared __devinit. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sparc64: use iommu_num_pages function in IOMMU codeJoerg Roedel2008-10-16
| | | | | | | | | Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sparc64: rename iommu_num_pages function to iommu_nr_pagesJoerg Roedel2008-10-16
| | | | | | | | | | | This is a preparation patch for introducing a generic iommu_num_pages function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sparc64: Fix sparse warnings in pci_sun4v.cDavid S. Miller2008-09-12
| | | | | | 'err' variable shadowing in pci_sun4v_probe() Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Record OF device instead of device node pointer in pci_pbm_info.David S. Miller2008-09-11
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Get rid of pci_controller_info.David S. Miller2008-09-11
| | | | | | | | | | It is just used as a parent to encapsulate two PBM objects. But that layout is only really relevant and necessary for psycho PCI controllers, which unlike all the others share a single IOMMU instance between sibling PCI busses. Signed-off-by: David S. Miller <davem@davemloft.net>
* pci_sun4v: Use of_get_property().David S. Miller2008-09-02
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Pass proper parent device down into root pci_create_bus() call.David S. Miller2008-09-01
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Simplify error handling in PCI controller probing.David S. Miller2008-08-31
| | | | | | Based upon suggestions from Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc: Annotate of_device_id arrays with const or __initdata.David S. Miller2008-08-31
| | | | | | As suggested by Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: Convert SUN4V PCI controller driver into a real driver.David S. Miller2008-08-30
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64/kernel/: make code staticAdrian Bunk2008-07-18
| | | | | | | | | | | | | | | | This patch makes the following needlessly global code static: - central.c: struct central_bus - central.c: struct fhc_list - central.c: apply_fhc_ranges() - central.c: apply_central_ranges() - ds.c: struct ds_states_template[] - pci_msi.c: sparc64_setup_msi_irq() - pci_msi.c: sparc64_teardown_msi_irq() - pci_sun4v.c: struct sun4v_dma_ops - sys_sparc32.c: cp_compat_stat64() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: NUMA device infrastructure.David S. Miller2008-04-24
| | | | | | Record and propagate NUMA information for devices. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc64: add the segment boundary checking to IOMMUs while merging SG entriesFUJITA Tomonori2008-03-28
| | | | | | | | | | | | | | | | | | | | Some IOMMUs allocate memory areas spanning LLD's segment boundary limit. It forces low level drivers to have a workaround to adjust scatter lists that the IOMMU builds. We are in the process of making all the IOMMUs respect the segment boundary limits to remove such work around in LLDs. SPARC64 IOMMUs were rewritten to use the IOMMU helper functions and the commit 89c94f2f70d093f59b55d3ea8042d13889169346 made the IOMMUs not allocate memory areas spanning the segment boundary limit. However, SPARC64 IOMMUs allocate memory areas first then try to merge them (while some IOMMUs walk through all the sg entries to see how they can be merged first and allocate memory areas). So SPARC64 IOMMUs also need the boundary limit checking when they try to merge sg entries. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add SG merging support back into IOMMU code.David S. Miller2008-02-09
| | | | | | | | | | | Mimicks almost perfectly the powerpc IOMMU code, except that it doesn't have the IOMMU_PAGE_SIZE != PAGE_SIZE handling, and it also lacks the device dma mask support bits. I'll add that later as time permits, but this gets us at least back to where we were beforehand. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: IOMMU allocations using iommu-helper layer.David S. Miller2008-02-09
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Temporarily remove IOMMU merging code.David S. Miller2008-02-06
| | | | | | | | | | | | | | Changeset fde6a3c82d67f592eb587be4d12222b0ae6d4321 ("iommu sg merging: sparc64: make iommu respect the segment size limits") broke sparc64 because whilst it added the segment limiting code to the first pass of SG mapping (in prepare_sg()) it did not add matching code to the second pass handling (in fill_sg()) As a result the two passes disagree where the segment boundaries should be, resulting in OOPSes, DMA corruption, and corrupted superblocks. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2008-02-05
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64] pci_sun4v.c: Section fixes.
| * [SPARC64] pci_sun4v.c: Section fixes.Adrian Bunk2008-02-05
| | | | | | | | | | | | | | | | WARNING: vmlinux.o(.text+0x39be4): Section mismatch in reference from the function probe_existing_entries() to the function .init.text:page_in_phys_avail() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | iommu sg merging: sparc64: make iommu respect the segment size limitsFUJITA Tomonori2008-02-05
|/ | | | | | | | | | | | | This patch makes iommu respect segment size limits when merging sg lists. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC64]: Fix of section mismatch warnings.Sam Ravnborg2008-01-22
| | | | | | | | | | | | | | | | | | Fix following Section mismatch warning in sparc64: WARNING: arch/sparc64/kernel/built-in.o(.text+0x13dec): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'psycho_scan_bus' and 'psycho_pbm_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x14b58): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'sabre_scan_bus' and 'sabre_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x15ea4): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'schizo_scan_bus' and 'schizo_pbm_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x17780): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'pci_sun4v_scan_bus' and 'pci_sun4v_get_head') WARNING: arch/sparc64/kernel/built-in.o(.text+0x17d5c): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'pci_fire_scan_bus' and 'pci_fire_get_head') WARNING: arch/sparc64/kernel/built-in.o(.text+0x23860): Section mismatch: reference to .devinit.text:vio_dev_release (between 'vio_create_one' and 'vio_add') WARNING: arch/sparc64/kernel/built-in.o(.text+0x23868): Section mismatch: reference to .devinit.text:vio_dev_release (between 'vio_create_one' and 'vio_add') The pci_* were all missing __init annotations. For the vio.c case it was a function with a wrong annotation which was removed. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: check for possible NULL pointer dereferenceCyrill Gorcunov2007-12-05
| | | | | | | | This patch adds checking for possible NULL pointer dereference if of_find_property() failed. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Update arch/ to use sg helpersJens Axboe2007-10-22
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Fix loop terminating conditions in fill_sg().David S. Miller2007-10-17
| | | | | Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* SPARC64: fix iommu sg chainingFUJITA Tomonori2007-10-17
| | | | | | | | Commit 2c941a204070ab32d92d40318a3196a7fb994c00 looks incomplete. The helper functions like prepare_sg() need to support sg chaining too. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* SPARC64: sg chaining supportJens Axboe2007-10-16
| | | | | | | | | | This updates the sparc64 iommu/pci dma mappers to sg chaining. Acked-by: David S. Miller <davem@davemloft.net> Later updated to newer kernel with unified sparc64 iommu sg handling. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SPARC64]: Kill pci_memspace_mask.David S. Miller2007-10-14
| | | | | | | It is totally unnecessary as the needed information is properly encoded in the resources. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Consolidate MSI support code.David S. Miller2007-10-14
| | | | | | | | | | | | | | | | This also makes us use the MSI queues correctly. Each MSI queue is serviced by a normal sun4u/sun4v INO interrupt handler. This handler runs the MSI queue and dispatches the virtual interrupts indicated by arriving MSIs in that MSI queue. All of the common logic is placed in pci_msi.c, with callbacks to handle the PCI controller specific aspects of the operations. This common infrastructure will make it much easier to add MSG support. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix several bugs in MSI handling.David S. Miller2007-08-31
| | | | | | | | | | | | | | | | | | | | | 1) sun4{u,v}_build_msi() have improper return value handling. We should always return negative error codes, instead of using the magic value "0" which could in fact be a valid MSI number. 2) sun4{u,v}_build_msi() should return -ENOMEM instead of calling prom_prom() halt with kzalloc() of the interrupt data fails. 3) We 'remembered' the MSI number using a singleton in the struct device archdata area, this doesn't work for MSI-X which can cause multiple MSIs assosciated with one device. Delete that archdata member, and instead store the MSI number in the IRQ chip data area. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix conflicts in SBUS/PCI/EBUS/ISA DMA handling.David S. Miller2007-07-30
| | | | | | | | | | | | | | | | | | | Fully unify all of the DMA ops so that subordinate bus types to the DMA operation providers (such as ebus, isa, of_device) can work transparently. Basically, we just make sure that for every system device we create, the dev->archdata 'iommu' and 'stc' fields are filled in. Then we have two platform variants of the DMA ops, one for SUN4U which actually programs the real hardware, and one for SUN4V which makes hypervisor calls. This also fixes the crashes in parport_pc on sparc64, reported by Meelis Roos. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: fix section mismatch warning in pci_sunv4Sam Ravnborg2007-07-20
| | | | | | | | | | | Fix following warning: WARNING: vmlinux.o(.text+0x3cf50): Section mismatch: reference to .init.text:page_in_phys_avail (between 'pci_sun4v_pbm_init' and 'sun4v_pci_init') pci_sun4v_pbm_init and sun4v_pci_init was only used under __init context so declare them _init. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Negotiate hypervisor API for PCI services.David S. Miller2007-05-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Don't be picky about virtual-dma values on sun4v.David S. Miller2007-05-29
| | | | | | | | | Handle arbitrary base and length values as long as they are multiples of IO_PAGE_SIZE. Bug found by Arun Kumar Rao. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Spelling fixes.Simon Arlott2007-05-12
| | | | | | | Spelling fixes in arch/sparc64/. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64] PCI: Consolidate PCI access code into pci_common.cDavid S. Miller2007-05-09
| | | | | | | | | | | | | All the sun4u controllers do the same thing to compute the physical I/O address to poke, and we can move the sun4v code into this common location too. This one needs a bit of testing, in particular the Sabre code had some funny stuff that would break up u16 and/or u32 accesses into pieces and I didn't think that was needed any more. If it is we need to find out why and add back code to do it again. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill asm-sparc64/pbm.hDavid S. Miller2007-05-08
| | | | | | Everything it contains can be hidden in pci_impl.h Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move index info pci_pbm_info.David S. Miller2007-05-08
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move {setup,teardown}_msi_irq into pci_pbm_info.David S. Miller2007-05-08
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move pci_ops into pci_pbm_info.David S. Miller2007-05-08
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64] PCI: Use root list of pbm's instead of pci_controller_info'sDavid S. Miller2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The idea is to move more and more things into the pbm, with the eventual goal of eliminating the pci_controller_info entirely as there really isn't any need for it. This stage of the transformations requires some reworking of the PCI error interrupt handling. It might be tricky to get rid of the pci_controller_info parenting for a few reasons: 1) When we get an uncorrectable or correctable error we want to interrogate the IOMMU and streaming cache of both PBMs for error status. These errors come from the UPA front-end which is shared between the two PBM PCI bus segments. Historically speaking this is why I choose the datastructure hierarchy of pci_controller_info-->pci_pbm_info 2) The probing does a portid/devhandle match to look for the 'other' pbm, but this is entirely an artifact and can be eliminated trivially. What we could do to solve #1 is to have a "buddy" pointer from one pbm to another. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64] PCI: Use common routine to fetch PBM properties.David S. Miller2007-05-08
| | | | | | | | | | Namely bus-range and ino-bitmap. This allows us also to eliminate pci_controller_info's pci_{first,last}_busno fields as only the pbm ones are used now. Signed-off-by: David S. Miller <davem@davemloft.net>
* MSI: arch must connect the irq and the msi_descMichael Ellerman2007-05-02
| | | | | | | | | | | | | | | | | | | | set_irq_msi() currently connects an irq_desc to an msi_desc. The archs call it at some point in their setup routine, and then the generic code sets up the reverse mapping from the msi_desc back to the irq. set_irq_msi() should do both connections, making it the one and only call required to connect an irq with it's MSI desc and vice versa. The arch code MUST call set_irq_msi(), and it must do so only once it's sure it's not going to fail the irq allocation. Given that there's no need for the arch to return the irq anymore, the return value from the arch setup routine just becomes 0 for success and anything else for failure. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SPARC64]: Convert PCI over to generic struct iommu/strbuf.David S. Miller2007-04-27
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Consolidate {sbus,pci}_iommu_arena.David S. Miller2007-04-26
| | | | | | Move to asm-sparc64/iommu.h and rename to plain "iommu_arena". Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add dummy host controller to root of all PCI domains.David S. Miller2007-04-26
| | | | | | | We fake up a dummy one in all cases because that is the simplest thing to do and it happens to be necessary for hypervisor systems. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Const'ify pci_iommu_ops.David S. Miller2007-04-26
| | | | | | | Based upon a similar patch for x86_64 written by Stephen Hemminger. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill pbm->pci_first_slot.David S. Miller2007-04-26
| | | | | | Set but never used. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill pci_controller->pbms_same_domainDavid S. Miller2007-04-26
| | | | | | | | We don't do the "Simba APB is a PBM" bogosity for Sabre controllers any longer, so this pbms_same_domain thing is no longer necessary. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill pci_controller->base_address_update().David S. Miller2007-04-26
| | | | | | Implemented but never actually used. Signed-off-by: David S. Miller <davem@davemloft.net>
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