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* PCI: augment bus resource table with a listBjorn Helgaas2010-02-23
| | | | | | | | | | | | | | | | | | | | | | | | Previously we used a table of size PCI_BUS_NUM_RESOURCES (16) for resources forwarded to a bus by its upstream bridge. We've increased this size several times when the table overflowed. But there's no good limit on the number of resources because host bridges and subtractive decode bridges can forward any number of ranges to their secondary buses. This patch reduces the table to only PCI_BRIDGE_RESOURCE_NUM (4) entries, which corresponds to the number of windows a PCI-to-PCI (3) or CardBus (4) bridge can positively decode. Any additional resources, e.g., PCI host bridge windows or subtractively-decoded regions, are kept in a list. I'd prefer a single list rather than this split table/list approach, but that requires simultaneous changes to every architecture. This approach only requires immediate changes where we set up (a) host bridges with more than four windows and (b) subtractive-decode P2P bridges, and we can incrementally change other architectures to use the list. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refsBjorn Helgaas2010-02-23
| | | | | | | | | | | | No functional change; this converts loops that iterate from 0 to PCI_BUS_NUM_RESOURCES through pci_bus resource[] table to use the pci_bus_for_each_resource() iterator instead. This doesn't change the way resources are stored; it merely removes dependencies on the fact that they're in a table. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* resource/PCI: mark struct resource as constDominik Brodowski2010-02-22
| | | | | | | | | | | Now that we return the new resource start position, there is no need to update "struct resource" inside the align function. Therefore, mark the struct resource as const. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* resource/PCI: align functions now return start of resourceDominik Brodowski2010-02-22
| | | | | | | | | | | As suggested by Linus, align functions should return the start of a resource, not void. An update of "res->start" is no longer necessary. Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* vsprintf: use %pR, %pr instead of %pRt, %pRfBjorn Helgaas2009-11-04
| | | | | | | | | | | | | | | | | Jesse accidentally applied v1 [1] of the patchset instead of v2 [2]. This is the diff between v1 and v2. The changes in this patch are: - tidied vsprintf stack buffer to shrink and compute size more accurately - use %pR for decoding and %pr for "raw" (with type and flags) instead of adding %pRt and %pRf [1] http://lkml.org/lkml/2009/10/6/491 [2] http://lkml.org/lkml/2009/10/13/441 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ia64/PCI: print resources consistently with %pRtBjorn Helgaas2009-11-04
| | | | | | | | This uses %pRt to print additional resource information (type, size, prefetchability, etc.) consistently. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: determine CLS more intelligentlyJesse Barnes2009-11-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Till now, CLS has been determined either by arch code or as L1_CACHE_BYTES. Only x86 and ia64 set CLS explicitly and x86 doesn't always get it right. On most configurations, the chance is that firmware configures the correct value during boot. This patch makes pci_init() determine CLS by looking at what firmware has configured. It scans all devices and if all non-zero values agree, the value is used. If none is configured or there is a disagreement, pci_dfl_cache_line_size is used. arch can set the dfl value (via PCI_CACHE_LINE_BYTES or pci_dfl_cache_line_size) or override the actual one. ia64, x86 and sparc64 updated to set the default cls instead of the actual one. While at it, declare pci_cache_line_size and pci_dfl_cache_line_size in pci.h and drop private declarations from arch code. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David Miller <davem@davemloft.net> Acked-by: Greg KH <gregkh@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* [IA64] Require SAL 3.2 in order to do extended config space opsMatthew Wilcox2009-10-13
| | | | | | | | | | | We had assumed that SAL firmware would return an error if it didn't understand extended config space. Unfortunately, the SAL on the SGI 750 doesn't do that, it panics the machine. So, condition the extended PCI config space accesses on SAL revision 3.2. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Brad Spengler <spender@grsecurity.net> Signed-off-by: Tony Luck <tony.luck@intel.com>
* ia64/PCI: adjust section annotation for pcibios_setup()Ingo Molnar2009-06-30
| | | | | | | Should be __init. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ia64: Fix resource assignment for root bussesMatthew Wilcox2009-06-17
| | | | | | | | | | | ia64 was assigning resources to root busses after allocations had been made for child busses. Calling pcibios_setup_root_windows() from pcibios_fixup_bus() solves this problem by assigning the resources to the root bus before child busses are scanned. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] Convert ia64 to use int-ll64.hMatthew Wilcox2009-06-17
| | | | | | | | | | | | | | | | | It is generally agreed that it would be beneficial for u64 to be an unsigned long long on all architectures. ia64 (in common with several other 64-bit architectures) currently uses unsigned long. Migrating piecemeal is too painful; this giant patch fixes all compilation warnings and errors that come as a result of switching to use int-ll64.h. Note that userspace will still see __u64 defined as unsigned long. This is important as it affects C++ name mangling. [Updated by Tony Luck to change efi.h:efi_freemem_callback_t to use u64 for start/end rather than unsigned long] Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] SN specific version of dma_get_required_mask()John Keller2009-01-15
| | | | | | | | | | | Create a platform specific version of dma_get_required_mask() for ia64 SN Altix. All SN Altix platforms support 64 bit DMA addressing regardless of the size of system memory. Create an ia64 machvec for dma_get_required_mask, with the SN version unconditionally returning DMA_64BIT_MASK. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* PCI: Add ability to mmap legacy_io on some platformsBenjamin Herrenschmidt2008-10-20
| | | | | | | | | | | | | | This adds the ability to mmap legacy IO space to the legacy_io files in sysfs on platforms that support it. This will allow to clean up X to use this instead of /dev/mem for legacy IO accesses such as those performed by Int10. While at it I moved pci_create/remove_legacy_files() to pci-sysfs.c where I think they belong, thus making more things statis in there and cleaned up some spurrious prototypes in the ia64 pci.h file Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* [IA64] pci_acpi_scan_root cleanupLuck, Tony2008-08-18
| | | | | | | | | | The code walks all the acpi _CRS methods to see how many windows to allocate. It then scans them all again to insert_resource() for each *even if the first scan found that there were none*. Move the second scan inside the "if (windows)" clause. Signed-off-by: Tony Luck <tony.luck@intel.com>
* PCI: ia64: use generic pci_enable_resources()Bjorn Helgaas2008-04-21
| | | | | | | | | | | | Use the generic pci_enable_resources() instead of the arch-specific code. Unlike this arch-specific code, the generic version: - does not check for a NULL dev pointer - skips resources that have neither IORESOURCE_IO nor IORESOURCE_MEM set Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* acpi: unneccessary to scan the PCI bus already scannedyakui.zhao@intel.com2008-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://bugzilla.kernel.org/show_bug.cgi?id=10124 this change: commit 08f1c192c3c32797068bfe97738babb3295bbf42 Author: Muli Ben-Yehuda <muli@il.ibm.com> Date: Sun Jul 22 00:23:39 2007 +0300 x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata This patch introduces struct pci_sysdata to x86 and x86-64, and converts the existing two users (NUMA, Calgary) to use it. This lays the groundwork for having other users of sysdata, such as the PCI domains work. The Calgary bits are tested, the NUMA bits just look ok. replaces pcibios_scan_root by pci_scan_bus_parented... but in pcibios_scan_root we have a check about scanned busses. Cc: <yakui.zhao@intel.com> Cc: Stian Jordet <stian@jordet.net> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] use dev_printk in video quirkBjorn Helgaas2008-03-06
| | | | | | | Convert quirk printks to dev_printk(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] remove remaining __FUNCTION__ occurrencesHarvey Harrison2008-03-06
| | | | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Long lines have been kept where they exist, some small spacing changes have been done. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Change pci_raw_ops to pci_raw_read/writeMatthew Wilcox2008-02-10
| | | | | | | | | | We want to allow different implementations of pci_raw_ops for standard and extended config space on x86. Rather than clutter generic code with knowledge of this, we make pci_raw_ops private to x86 and use it to implement the new raw interface -- raw_pci_read() and raw_pci_write(). Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] Nail two more simple section mismatch errorsTony Luck2007-07-25
| | | | | | | pcibios_setup (between 'pci_setup' and 'quirk_mellanox_tavor') setup_profiling_timer (between 'write_profile' and 'delayed_put_task_struct') Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] prevent MCA when performing MMIO mmap to PCI config spaceAlex Chiang2007-07-11
| | | | | | | | | | | | | | | | | | | | Example memory map (HP rx7640 with 'default' acpiconfig setting, VGA disabled): 0x00000000 - 0x3FFFBFFF supports only WB (cacheable) access If a user attempts to perform an MMIO mmap (using the PCIIOC_MMAP_IS_MEM ioctl) to PCI config space (like mmap'ing and accessing memory at 0xA0000), we will MCA because the kernel will attempt to use a mapping with the UC attribute. So check the memory attribute in kern_mmap and the EFI memmap. If WC is requested, and WC or UC access is supported for the region, allow it. Otherwise, use the same attribute the kernel uses. Updates documentation and test cases as well. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] fix kmalloc(0) in arch/ia64/pci/pci.cKenji Kaneshige2007-05-22
| | | | | | | | | | | | | Hiroyuki Kamezawa reported the problem that pci_acpi_scan_root() of ia64 might call kmalloc_node() with zero size. Currently ia64's pci_acpi_scan_root() assumes that _CRS method of root bridge has at least one resource window. But, the root bridges that has no resource window must be taken into account. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-08
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] allow WB /sys/.../legacy_mem mmapsBjorn Helgaas2007-03-30
| | | | | | | | | | | | Allow cacheable mmaps of legacy_mem if WB access is supported for the region. The "legacy_mem" file often contains a shadow option ROM, and some versions of X depend on this. Tim Yamin <plasm@roo.me.uk> reported that this change fixes X on a Dell PowerEdge 3250. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix arch/ia64/pci/pci.c:571: warning: `return' with a valueTony Luck2007-03-29
| | | | | | Typo/thinko in bba6f6fc68e74d4572028646f61dd3505a68747e Signed-off-by: Tony Luck <tony.luck@intel.com>
* [PATCH] MSI-X: fix resume crashEric W. Biederman2007-03-28
| | | | | | | | | | | | | | So I think the right solution is to simply make pci_enable_device just flip enable bits and move the rest of the work someplace else. However a thorough cleanup is a little extreme for this point in the release cycle, so I think a quick hack that makes the code not stomp the irq when msi irq's are enabled should be the first fix. Then we can later make the code not change the irqs at all. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] replace kmalloc+memset with kzallocYan Burman2006-12-07
| | | | | | | | Replace kmalloc+memset with kzalloc Signed-off-by: Yan Burman <burman.yan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix pci.c kernel compilation breakage.Peter Chubb2006-12-06
| | | | | | | | | | | The recent change to convert the is_enabled flag in the PCI device to an atomic count broke the IA64 compilation. As pcibios_disable_device is only ever called if the reference count is zero, convert the if to a BUG_ON. Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Altix: Add initial ACPI IO supportJohn Keller2006-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First phase in introducing ACPI support to SN. In this phase, when running with an ACPI capable PROM, the DSDT will define the root busses and all SN nodes (SGIHUB, SGITIO). An ACPI bus driver will be registered for the node devices, with the acpi_pci_root_driver being used for the root busses. An ACPI vendor descriptor is now used to pass platform specific information for both nodes and busses, eliminating the need for the current SAL calls. Also, with ACPI support, SN fixup code is no longer needed to initiate the PCI bus scans, as the acpi_pci_root_driver does that. However, to maintain backward compatibility with non-ACPI capable PROMs, none of the current 'fixup' code can been deleted, though much restructuring has been done. For example, the bulk of the code in io_common.c is relocated code that is now common regardless of what PROM is running, while io_acpi_init.c and io_init.c contain routines specific to an ACPI or non ACPI capable PROM respectively. A new pci bus fixup platform vector has been created to provide a hook for invoking platform specific bus fixup from pcibios_fixup_bus(). The size of io_space[] has been increased to support systems with large IO configurations. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: Use pci_generic_prep_mwi on ia64Matthew Wilcox2006-12-01
| | | | | | | | | | | | | | | The pci_generic_prep_mwi() code does everything that pcibios_prep_mwi() does on ia64. All we need to do is be sure that pci_cache_line_size is set appropriately, and we can delete pcibios_prep_mwi(). Using SMP_CACHE_BYTES as the default was wrong on uniprocessor machines as it is only 8 bytes. The default in the generic code of L1_CACHE_BYTES is at least as good. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* PCI: fix pci_fixup_video as it blows up on sparc64Eiichiro Oiwa2006-10-27
| | | | | | | | | | | | This reverts much of the original pci_fixup_video change and makes it work for all arches that need it. fixed, and tested on x86, x86_64 and IA64 dig. Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@hitachi.com> Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] genirq: msi: simplify the msi irq limit policyEric W. Biederman2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | Currently we attempt to predict how many irqs we will be able to allocate with msi using pci_vector_resources and some complicated accounting, and then we only allow each device as many irqs as we think are available on average. Only the s2io driver even takes advantage of this feature all other drivers have a fixed number of irqs they need and bail if they can't get them. pci_vector_resources is inaccurate if anyone ever frees an irq. The whole implmentation is racy. The current irq limit policy does not appear to make sense with current drivers. So I have simplified things. We can revisit this we we need a more sophisticated policy. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rajesh Shah <rajesh.shah@intel.com> Cc: Andi Kleen <ak@muc.de> Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* IA64: PCI: dont disable irq which is not enabledSatoru Takeuchi2006-09-26
| | | | | | | | | | | | | This patch prevents pcibios_disable_device() from disabling interrupts of devices which is not enabled. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com> Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] make valid_mmap_phys_addr_range() take a pfnLennert Buytenhek2006-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newer ARMs have a 40 bit physical address space, but mapping physical memory above 4G needs a special page table format which we (currently?) do not use for userspace mappings, so what happens instead is that mapping an address >= 4G will happily discard the upper bits and wrap. There is a valid_mmap_phys_addr_range() arch hook where we could check for >= 4G addresses and deny the mapping, but this hook takes an unsigned long address: static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size); And drivers/char/mem.c:mmap_mem() calls it like this: static int mmap_mem(struct file * file, struct vm_area_struct * vma) { size_t size = vma->vm_end - vma->vm_start; if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size)) So that's not much help either. This patch makes the hook take a pfn instead of a phys address. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] 64bit resource: change pci core and arch code to use resource_size_tGreg Kroah-Hartman2006-06-27
| | | | | | | | Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHMChristoph Lameter2006-06-25
| | | | | | | | | | | | | | | | | Remove VM_LOCKED before remap_pfn range from device drivers and get rid of VM_SHM. remap_pfn_range() already sets VM_IO. There is no need to set VM_SHM since it does nothing. VM_LOCKED is of no use since the remap_pfn_range does not place pages on the LRU. The pages are therefore never subject to swap anyways. Remove all the vm_flags settings before calling remap_pfn_range. After removing all the vm_flag settings no use of VM_SHM is left. Drop it. Signed-off-by: Christoph Lameter <clameter@sgi.com> Acked-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Auto-update from upstreamTony Luck2006-06-23
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| * [PATCH] Unify pxm_to_node() and node_to_pxm()Yasunori Goto2006-06-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Consolidate the various arch-specific implementations of pxm_to_node() and node_to_pxm() into a single generic version. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Andi Kleen <ak@muc.de> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [IA64] rework memory attribute aliasingBjorn Helgaas2006-05-08
|/ | | | | | | | | | | | | | | | | | | | | | | | | This closes a couple holes in our attribute aliasing avoidance scheme: - The current kernel fails mmaps of some /dev/mem MMIO regions because they don't appear in the EFI memory map. This keeps X from working on the Intel Tiger box. - The current kernel allows UC mmap of the 0-1MB region of /sys/.../legacy_mem even when the chipset doesn't support UC access. This causes an MCA when starting X on HP rx7620 and rx8620 boxes in the default configuration. There's more detail in the Documentation/ia64/aliasing.txt file this adds, but the general idea is that if a region might be covered by a granule-sized kernel identity mapping, any access via /dev/mem or mmap must use the same attribute as the identity mapping. Otherwise, we fall back to using an attribute that is supported according to the EFI memory map, or to using UC if the EFI memory map doesn't mention the region. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] eliminate compile time warningsSatoru Takeuchi2006-04-20
| | | | | | | | | | | | | | | This patch removes following compile time warnings: drivers/pci/pci-sysfs.c: In function `pci_read_legacy_io': drivers/pci/pci-sysfs.c:257: warning: implicit declaration of function `ia64_pci_legacy_read' drivers/pci/pci-sysfs.c: In function `pci_write_legacy_io': drivers/pci/pci-sysfs.c:280: warning: implicit declaration of function `ia64_pci_legacy_write' It also fixes wrong definition of ia64_pci_legacy_write (type of `bus' is not `pci_dev', but `pci_bus'). Signed-Off-By: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix pcibios_setupMatthew Wilcox2006-02-27
| | | | | | | | | | pcibios_setup() should return NULL if it handled a parameter. Since ia64 handles no parameters, it should return the string that was passed in, not NULL. This brings ia64 into line with all other architectures that handle no parameters. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Tony Luck <tony.luck@intel.com>
*---. [ACPI] merge 3549 4320 4485 4588 4980 5483 5651 acpica asus fops pnpacpi ↵Len Brown2006-01-24
|\ \ \ | | | | | | | | | | | | | | | | | | | | branches into release Signed-off-by: Len Brown <len.brown@intel.com>
| | | * Pull pnpacpi into acpica branchLen Brown2006-01-07
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| | | * [ACPI] ACPICA 20051021Bob Moore2005-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implemented support for the EM64T and other x86_64 processors. This essentially entails recognizing that these processors support non-aligned memory transfers. Previously, all 64-bit processors were assumed to lack hardware support for non-aligned transfers. Completed conversion of the Resource Manager to nearly full table-driven operation. Specifically, the resource conversion code (convert AML to internal format and the reverse) and the debug code to dump internal resource descriptors are fully table-driven, reducing code and data size and improving maintainability. The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word on 64-bit processors instead of a fixed 32-bit word. (Alexey Starikovskiy) Implemented support within the resource conversion code for the Type-Specific byte within the various ACPI 3.0 *WordSpace macros. Fixed some issues within the resource conversion code for the type-specific flags for both Memory and I/O address resource descriptors. For Memory, implemented support for the MTP and TTP flags. For I/O, split the TRS and TTP flags into two separate fields. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | | * [ACPI] ACPICA 20050930Bob Moore2005-12-10
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Completed a major overhaul of the Resource Manager code - specifically, optimizations in the area of the AML/internal resource conversion code. The code has been optimized to simplify and eliminate duplicated code, CPU stack use has been decreased by optimizing function parameters and local variables, and naming conventions across the manager have been standardized for clarity and ease of maintenance (this includes function, parameter, variable, and struct/typedef names.) All Resource Manager dispatch and information tables have been moved to a single location for clarity and ease of maintenance. One new file was created, named "rsinfo.c". The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to guarantee that the argument is not evaluated twice, making them less prone to macro side-effects. However, since there exists the possibility of additional stack use if a particular compiler cannot optimize them (such as in the debug generation case), the original macros are optionally available. Note that some invocations of the return_VALUE macro may now cause size mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to eliminate these. (From Randy Dunlap) Implemented a new mechanism to enable debug tracing for individual control methods. A new external interface, acpi_debug_trace(), is provided to enable this mechanism. The intent is to allow the host OS to easily enable and disable tracing for problematic control methods. This interface can be easily exposed to a user or debugger interface if desired. See the file psxface.c for details. acpi_ut_callocate() will now return a valid pointer if a length of zero is specified - a length of one is used and a warning is issued. This matches the behavior of acpi_ut_allocate(). Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | / [IA64] Stop multiple pci_claim_resource() call for the same resourceKenji Kaneshige2006-01-16
|/ / | | | | | | | | | | | | | | | | This patch fixes the bug that pci_claim_resource() is called multiple times for the same P2P bridge's resource structures if P2P bridges require their own PCI I/O resources. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* / [IA64] incorrect return from ia64_pci_legacy_write()Alex Williamson2006-01-03
|/ | | | | | | | | | | The function ia64_pci_legacy_write() returns 0 for everything except errors. This return value gets sent back to the user from pci_write_legacy_io(), making it look like every write fails. The trivial patch below copies the behavior of the SGI sn machvec and does what would be expected from something implementing a write() function. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] add the MMIO regions that are translated to I/O port space to /proc/iomemBjorn Helgaas2005-11-08
| | | | | | | | | | | | | | | | | | | | ia64 translates normal loads and stores to special MMIO regions into I/O port accesses. Reserve these special MMIO regions in /proc/iomem. Sample /proc/iomem: f8100000000-f81003fffff : PCI Bus 0000:80 I/O Ports 00000000-00000fff f8100400000-f81007fffff : PCI Bus 0000:8e I/O Ports 00001000-00001fff f8100800000-f8100ffffff : PCI Bus 0000:9c I/O Ports 00002000-00003fff f8101000000-f81017fffff : PCI Bus 0000:aa I/O Ports 00004000-00005fff and corresponding /proc/ioports: 00000000-00000fff : PCI Bus 0000:80 00001000-00001fff : PCI Bus 0000:8e 00002000-00003fff : PCI Bus 0000:9c 00004000-00005fff : PCI Bus 0000:aa Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Pull acpi-produce-consume into release branchTony Luck2005-10-28
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