- 22 Jun, 2005 40 commits
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Paolo 'Blaisorblade' Giarrusso authored
With Al Viro <viro@parcelfarce.linux.theplanet.co.uk> To make sure switcheroo() can execute when we remap all the executable image, we used a trick to make it use a local copy of errno... this trick does not work with NPTL glibc, only with LinuxThreads, so use another (simpler) one to make it work anyway. Hopefully, a lot improved thanks to merging with the version of Al Viro (which had his part of problems, though, i.e. removing a fix to another bug and not fixing the problem on i386). Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paolo 'Blaisorblade' Giarrusso authored
With Chris Wedgwood <cw@f00f.org> As suggested by Chris, we can make the "just added" method ->release conditional to UML only (better: to archs requesting it, i.e. only UML currently), so that other archs don't get this unneeded crud, and if UML won't need it any more we can kill this. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
This occurrence of free_irq_by_irq_and_dev() was missed when converting UML to the use of hw_controller_type->release. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
With Chris Wedgwood <cw@f00f.org> Currently UML must explicitly call the UML-specific free_irq_by_irq_and_dev() for each free_irq call it's done. This is needed because ->shutdown and/or ->disable are only called when the last "action" for that irq is removed. Instead, for UML shared IRQs (UML IRQs are very often, if not always, shared), for each dev_id some setup is done, which must be cleared on the release of that fd. For instance, for each open console a new instance (i.e. new dev_id) of the same IRQ is requested(). Exactly, a fd is stored in an array (pollfds), which is after read by a host thread and passed to poll(). Each event registered by poll() triggers an interrupt. So, for each free_irq() we must remove the corresponding host fd from the table, which we do via this -release() method. In this patch we add an appropriate hook for this, and remove all uses of it by pointing the hook to the said procedure; this is safe to do since the said procedure. Also some cosmetic improvements are included. This is heavily based on some work by Chris Wedgwood, which however didn't get the patch merged for something I'd call a "misunderstanding" (the need for this patch wasn't cleanly explained, thus adding the generic hook was felt as undesirable). Signed-off-by:
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Hirokazu Takata authored
The current include/asm-m32r/div64.h of 2.6.12-rc5 looks buggy. Here is a patch for updating it to use asm-generic/div64.h for m32r like other architectures. Signed-off-by:
Hitoshi Yamamoto <hitoshiy@isl.melco.co.jp> Signed-off-by:
Hirokazu Takata <takata@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
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Hirokazu Takata authored
This patch removes an obsolete header file include/asm-m32r/m32102peri.h. In this header, there are some undesirable single character types, like V. And the header is almost no longer used. Signed-off-by:
Hayato Fujiwara <fujiwara@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Signed-off-by:
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Hirokazu Takata authored
This patch is for the M32R CF/PCMCIA drivers to support a new platform, Mappi-III evaluation board. Signed-off-by:
Mamoru Sakugawa <sakugawa@linux-m32r.org> Signed-off-by:
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Hirokazu Takata authored
Change coding styles of hw_interrupt_type struct's initialization portions. Signed-off-by:
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Hirokazu Takata authored
This patchset is for supporting a new m32r platform, M3A-2170(Mappi-III) evaluation board. An M32R chip multiprocessor is equipped on the board. http://http://www.linux-m32r.org/eng/platform/platform.html * arch/m32r/Kconfig: Support Mappi-III platform. * arch/m32r/kernel/Makefile: ditto. * arch/m32r/kernel/io_mappi3.c: ditto. * arch/m32r/kernel/setup.c: ditto. * arch/m32r/kernel/setup_mappi3.c: ditto. * include/asm-m32r/m32102.h: ditto. * include/asm-m32r/m32r.h: ditto. * include/asm-m32r/mappi3/mappi3_pld.h: ditto. * include/asm-m32r/ide.h: CF support for Mappi-III. * arch/m32r/kernel/setup_mappi3.c: ditto. * arch/m32r/mappi3/defconfig.smp: A default config file for Mappi-III. * arch/m32r/mappi3/dot.gdbinit: A default .gdbinit file for Mappi-III. * arch/m32r/boot/compressed/m32r_sio.c: Modified for Mappi-III - At boot time, m32r-g00ff bootloader makes MMU off for Mappi-III, on the contrary it makes MMU on for Mappi-II. * arch/m32r/kernel/io_mappi2.c: Update comments. * arch/m32r/kernel/setup_mappi2.c: ditto. Signed-off-by:
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Brent Casavant authored
Several hardware features of SGI's IOC4 I/O controller chip require timing-related driver calculations dependent upon the PCI bus speed. This patch enables the core IOC4 driver code to detect the actual bus speed and store a value that can later be used by the IOC4 subdrivers as needed. Signed-off-by:
Brent Casavant <bcasavan@sgi.com> Acked-by:
Pat Gefre <pfg@sgi.com> Signed-off-by:
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Brent Casavant authored
The SGI IOC4 I/O controller chip drivers are currently all configured by CONFIG_BLK_DEV_SGIIOC4. This is undesirable as not all IOC4 hardware features are needed by all systems. This patch adds two configuration variables, CONFIG_SGI_IOC4 for core IOC4 driver support (see patch 1/3 in this series for further explanation) and CONFIG_SERIAL_SGI_IOC4 to independently enable serial port support. Signed-off-by:
Jeremy Higdon <jeremy@sgi.com> Signed-off-by:
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Brent Casavant authored
This series of patches reworks the configuration and internal structure of the SGI IOC4 I/O controller device drivers. These changes are motivated by several factors: - The IOC4 chip PCI resources are of mixed use between functions (i.e. multiple functions are handled in the same address range, sometimes within the same register), muddling resource ownership and initialization issues. Centralizing this ownership in a core driver is desirable. - The IOC4 chip implements multiple functions (serial, IDE, others not yet implemented in the mainline kernel) but is not a multifunction PCI device. In order to properly handle device addition and removal as well as module insertion and deletion, an intermediary IOC4-specific driver layer is needed to handle these operations cleanly. - All IOC4 drivers are currently enabled by a single CONFIG value. As not all systems need all IOC4 functions, it is desireable to enable these drivers independently. - The current IOC4 core driver will trigger loading of all function-level drivers, as it makes direct calls to them. This situation should be reversed (i.e. function-level drivers cause loading of core driver) in order to maintain a clear and least-surprise driver loading model. - IOC4 hardware design necessitates some driver-level dependency on the PCI bus clock speed. Current code assumes a 66MHz bus, but the speed should be autodetected and appropriate compensation taken. This patch series effects the above changes by a newly and better designed IOC4 core driver with which the function-level drivers can register and deregister themselves upon module insertion/removal. By tracking these modules, device addition/removal is also handled properly. PCI resource management and ownership issues are centralized in this core driver, and IOC4-wide configuration actions such as bus speed detection are also handled in this core driver. This patch: The SGI IOC4 I/O controller chip implements multiple functions, though it is not a multi-function PCI device. Additionally, various PCI resources of the IOC4 are shared by multiple hardware functions, and thus resource ownership by driver is not clearly delineated. Due to the current driver design, all core and subordinate drivers must be loaded, or none, which is undesirable if not all IOC4 hardware features are being used. This patch reorganizes the IOC4 drivers so that the core driver provides a subdriver registration service. Through appropriate callbacks the subdrivers can now handle device addition and removal, as well as module insertion and deletion (though the IOC4 IDE driver requires further work before module deletion will work). The core driver now takes care of allocating PCI resources and data which must be shared between subdrivers, to clearly delineate module ownership of these items. Signed-off-by:
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Yoichi Yuasa authored
Add vr41xx gpio support. Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Anton Blanchard authored
Allow the SMT bit to be set/reset at boot, like the ALTIVEC bit. This means we will enable SMT on unknown cpus that support it. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Anton Blanchard authored
We dont use the hardware referenced and changed bits and setting them early avoids a store to memory. We already do this for userspace hptes but not kernel ones. Do it. Signed-off-by:
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Stephen Rothwell authored
Currently we dynamically allocate the fake parent device for all devices on the vio bus. This patch statically allocates it. This also allows us to reuse it for the iSeries "generic" vio device (that is used for passing to dma routines when communicating with the hypervisor without a device involved). Also unexport vio_bus_type as it is never used in modules. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Stephen Rothwell authored
This patch allows iSeries to build with CONFIG_PCI=n. This is useful for partitions that have only virtual I/O. Signed-off-by:
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Stephen Rothwell authored
This patch just removes some dead code, fixes messages that referred to the file this code used to be in and inserts XmPciLpEvent_init into its caller. Signed-off-by:
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Stephen Rothwell authored
This patch just merges XmPciLpEvent.c into iSeries_irq.c (the only caller of its only external function). XmPciLpEvent.c just contained the lowlevel iSeries irq code. Signed-off-by:
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Stephen Rothwell authored
This patch is just simple cleanups to the iSeries irq code. - whitespace and comments - rearrange some functions to avoid forward declarations - remove XmPciLpEvent.h as its functions were declared elsewhere - remove decaration of function that no longer exists No semantic changes. Signed-off-by:
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Stephen Rothwell authored
The AgentId, PhbId, FrameId, CardLocation and Location members of iSeries_Device_Node are stored early in the boot process just so that a message about the device can be printed later in the boot process. Remove them and construct the message by doing the VPD parsing at the time the message is printed. Also remove a few unused defines in iSeries_VpdInfo.c. Signed-off-by:
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Stephen Rothwell authored
The IoRetry member of iSeries_Devide_Node is really only used locally, so remove it and replace it with a local variable. Signed-off-by:
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Stephen Rothwell authored
Remove no longer used things from iSeries_pci.h. Signed-off-by:
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Stephen Rothwell authored
Clean up iSeries_VpdInfo.c: - white space and comment fixes - make a function static - the functions here are only called from iSeries_pci.c, so CONFIG_PCI will be set (so remove check) - only build when CONFIG_PCI is set - remove unneeded includes and cast Signed-off-by:
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Stephen Rothwell authored
The iommu_table_cb structure is iSeries specific, so move it to the header file that declares the function we pass it to. vio_tce_table and iommu_setup_iSeries no longer exist, so remove their declarations. Signed-off-by:
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Stephen Rothwell authored
The file arch/ppc64/kernel/iSeries_pci_reset contains only one function that is not use anywhere (any more). Remove it. This function is the only user of the ReturnCode member of iSeries_Device_Node, so remove that as well. Signed-off-by:
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Stephen Rothwell authored
Last of this round of the iSeries header cleanups - don't have two defines for the same thing (HvMaxArchitectedLps and HvMaxArchitectedVirtualLans) - HvCallSc.h only needs linux/types.h - remove unused struct definition - add "extern" to some more function declarations Signed-off-by:
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Stephen Rothwell authored
This patch removes some unused bits from HvCall.h and some unneeded #includes from other files. Also includes ItLpQueue.h in paca.h in preference to a stub declaration of struct ItLpQueue. Signed-off-by:
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Stephen Rothwell authored
Just white space cleaups and move process_iSeries_events into its only caller. Signed-off-by:
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Stephen Rothwell authored
Now that the only users of things in HvCallCfg.h are in HvLpConfig.h, merge in the bit we need and remove HvCallCfg.h. Signed-off-by:
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Stephen Rothwell authored
This patch removes from the iSeries header files a large number of inline functions that are not used. It also changes the only caller of a HvCallCfg function that is outside HvLpConfig.h to its equivalent HvLpConfig function and no longer includes HvCallCfg.h where it is not needed. Signed-off-by:
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Stephen Rothwell authored
include/asm-ppc64/iSeries/LparData.h just included a whole lot of other files to declare variables that would be better declared in those other files. So, remove it. This will reduce that number of things needed to be included in most cases to access the relevant variables. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au Signed-off-by:
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Stephen Rothwell authored
This patch does some obvious code cleanups in the iSeries headers files. - simplifies the bodies of lots of inline functions - parenthesises a macros result - removes C++ wrapping - adds "extern" to some function declarations There are no semantic changes. Signed-off-by:
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Stephen Rothwell authored
This patch just contains white space and comment cleanups in the iSeries headers files. There are no semantic changes. Signed-off-by:
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Stephen Rothwell authored
This patch just contains white space and comment cleanups in the iSeries headers files. There are no semantic changes. Signed-off-by:
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Stephen Rothwell authored
include/asm-ppc64/iSeries/iSeries_proc.h just contains a declaration of a function that no longer exists. Remove it. Signed-off-by:
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Sven Luther authored
[PATCH] ppc64: override command line AS/LD/CC variables when adding -m64 and co for biarch compilers The following kind of calls currently fails : make ARCH=ppc64 CC="gcc-3.4" Since the code for detecting a biarch compiler and adding the needed 64bit magic argument fails if the AS/LD/CC commands are overriden in the command line. The attached patch fixes this by using the make override and += directive, but i am not 100% sure this will work without gmake, as i am no Makefile expert. Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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David Gibson authored
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:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
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