- 14 Jan, 2006 11 commits
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Paul Mackerras authored
The 601 processor will generate an alignment exception for accesses which cross a page boundary. In the boot wrapper code, OF is still handling all exceptions, and it doesn't have an alignment exception handler that emulates the instruction and continues. This changes the memcpy and memmove routines in the boot wrapper to avoid doing unaligned accesses. If the source and destination are misaligned with respect to each other, we just copy one byte at a time. Signed-off-by:Paul Mackerras <paulus@samba.org>
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Paul Mackerras authored
This adds code to build zImage.coff and/or zImage.initrd.coff when CONFIG_PPC32 and CONFIG_PPC_PMAC are defined. It also restructures the OF client code and adds some workarounds for OF quirks on the older machines. Signed-off-by: -
David Woodhouse authored
This makes macio-adb.c build again. Entirely untested. Signed-off-by:
David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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David Woodhouse authored
This makes CHRP build again, although it's untested because my Pegasos is currently in pieces. Signed-off-by:
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Dave C Boutcher authored
Handle the ibm,suspend-me RTAS call specially. It needs to be wrapped in a set of synchronization hypervisor calls (H_Join). When the H_Join calls are made on all CPUs, the intent is that only one will return with H_Continue, meaning that he is the "last man standing". That CPU then issues the ibm,suspend-me call. What is interesting, of course, is that the CPU running when the rtas syscall is made, may NOT be the CPU that ultimately executes the ibm,suspend-me rtas call. Signed-off-by:
Dave Boutcher <sleddog@us.ibm.com> Signed-off-by:
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Paul Mackerras authored
The arch/powerpc version of process.c exports get_wchan itself. When I moved ARCH=ppc over to using arch/powerpc/kernel/process.c the get_wchan export in arch/ppc/kernel/ppc_ksyms.c became redundant, so remove it. Signed-off-by: -
Marcelo Tosatti authored
The following implements support for instantiation of 8MB D-TLB entries for the kernel direct virtual mapping on 8xx, thus reducing TLB space consumed for the kernel. Test used: writing 40MB from /dev/zero to file in ext2fs over RAMDISK. $ time dd if=/dev/zero of=file bs=4k count=10000 VANILLA 8MB kernel data pages real 0m11.485s real 0m11.267s user 0m0.218s user 0m0.250s sys 0m8.939s sys 0m9.108s real 0m11.518s real 0m10.978s user 0m0.203s user 0m0.222s sys 0m9.585s sys 0m9.138s real 0m11.554s real 0m10.967s user 0m0.228s user 0m0.222s sys 0m9.497s sys 0m9.127s real 0m11.633s real 0m11.286s user 0m0.214s user 0m0.196s sys 0m9.529s sys 0m9.134s and averages for both: real 11.54750 real 11.12450 Which is a 3.6% improvement in execution time. More improvement is expected for loads with larger kernel data footprint (real workloads). Signed-off-by:
Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by:
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Kumar Gala authored
Add the first MPC83xx board that uses a flat device tree to arch/powerpc. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Kumar Gala authored
Parse the flat device tree for devices on Freescale SOC's that we know about (gianfar, gianfar_mdio, i2c, mpc83xx_wdt). We need to setup platform devices and platform data for these devices to match arch/ppc usage. Also add a helper function (get_immrbase) that reports the base address of the MMIO registers on the SOC. Signed-off-by:
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Kumar Gala authored
On a number of embedded reference boards there isn't always a way to reset, power_off, or halt the board. Rather than having each board implement a spin loop just let the generic code do it. Signed-off-by:
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Andy Whitcroft authored
In 2.6.15-git6 a change was commited in the oprofile support in the powerpc architecture. It introduced the powerpc_oprofile_type which contains the define G4. This causes a name clash with the existing wacom usb tablet driver. CC [M] drivers/usb/input/wacom.o drivers/usb/input/wacom.c:98: error: conflicting types for `G4' include/asm/cputable.h:37: error: previous declaration of `G4' CC [M] drivers/usb/mon/mon_text.o make[3]: *** [drivers/usb/input/wacom.o] Error 1 make[2]: *** [drivers/usb/input] Error 2 The elements of an enum declared in global scope are effectivly global identifiers themselves. As such we need to ensure the names are unique. This patch updates the later oprofile support to use unique names. Signed-off-by:Andy Whitcroft <apw@shadowen.org> Signed-off-by:
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- 13 Jan, 2006 16 commits
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Paul Mackerras authored
The glibc folks want to use AT_PLATFORM to select between possible alternative versions of shared libraries. This commit makes the kernel supply an AT_PLATFORM string that indicates what class of processor we are running on. Processors with the same set of user-level instructions and roughly the same instruction scheduling characteristics are given the same AT_PLATFORM value; for example, 821, 823 and 860 are all reported as "ppc823", and 7447, 7447A, 7448, 7450, 7451, 7455 are all called "ppc7450". The intention is that the AT_PLATFORM values match the values that gcc accepts for the -mcpu= option. For values which are numeric (e.g. -mcpu=750), "ppc" has been prepended. This also adds a PPC_FEATURE_BOOKE bit to the AT_HWCAP value and sets it for the 440 family and the Freescale 85xx family. Signed-off-by: -
Paul Mackerras authored
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Paul Mackerras authored
On PowerPC, we want to be able to provide an AT_PLATFORM aux table entry to userspace, so that glibc can choose optimized libraries for the processor we're running on. Unfortunately that would be the 21st aux table entry on powerpc, meaning that the aux table including the terminating null entry would overflow the mm->saved_auxv[] array, leading to userland programs segfaulting. This increases the size of the mm->saved_auxv array to be large enough to accommodate an AT_PLATFORM entry on powerpc. Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Evgeniy authored
There's a lack of parenthesis in fs/ufs/utils.h, so instead of the 512th byte of buffer, the usb2 pointer will point to the nth structure of type ufs_super_block_second. This can cause a mount-time oops if you're unlucky (especially with DEBUG_PAGEALLOC, which is how Alexey Dobriyan saw this problem) Signed-off-by:
Evgeniy Dushistov <dushistov@mail.ru> Acked-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Anton Blanchard authored
It makes my eyes hurt. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Anton Blanchard authored
eieio is only a store - store ordering. When used to order an unlock operation loads may leak out of the critical region. This is potentially buggy, one example is if a user wants to atomically read a couple of values. We can solve this with an lwsync which orders everything except store - load. I removed the (now unused) EIEIO_ON_SMP macros and the c versions isync_on_smp and eieio_on_smp now we dont use them. I also removed some old comments that were used to identify inline spinlocks in assembly, they dont make sense now our locks are out of line. Another interesting thing was that read_unlock was using an eieio even though the rest of the spinlock code had already been converted to use lwsync. Signed-off-by:
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David Gibson authored
At present the lppaca - the structure shared with the iSeries hypervisor and phyp - is contained within the PACA, our own low-level per-cpu structure. This doesn't have to be so, the patch below removes it, making a separate array of lppaca structures. This saves approximately 500*NR_CPUS bytes of image size and kernel memory, because we don't need aligning gap between the Linux and hypervisor portions of every PACA. On the other hand it means an extra level of dereference in many accesses to the lppaca. The patch also gets rid of several places where we assign the paca address to a local variable for no particular reason. Signed-off-by:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
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David Gibson authored
This patch consolidates the variety of macros used for loading 32 or 64-bit constants in assembler (LOADADDR, LOADBASE, SET_REG_TO_*). The idea is to make the set of macros consistent across 32 and 64 bit and to make it more obvious which is the appropriate one to use in a given situation. The new macros and their semantics are described in the comments in ppc_asm.h. In the process, we change several places that were unnecessarily using immediate loads on ppc64 to use the GOT/TOC. Likewise we cleanup a couple of places where we were clumsily subtracting PAGE_OFFSET with asm instructions to use assemble-time arithmetic or the toreal() macro instead. Signed-off-by:
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Kumar Gala authored
The gianfar driver changed how it required MDIO bus and phy id's to be passed to it. Also, it no longer passes the physical address of the MDIO bus. Instead we have a proper platform device. Signed-off-by:
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Tom Rini authored
The following reworks how defaultimage- is used. We default to zImage here and then override it on platforms that need something more (uImage in the future) or less (vmlinux on iSeries). Signed-off-by:
Tom Rini <trini@kernel.crashing.org> Signed-off-by:
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Dave C Boutcher authored
Add support to reconfigure the device tree through the existing proc filesystem interface. Add "add_property", "remove_property", and "update_property" commands to the existing interface. Signed-off-by:
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Dave C Boutcher authored
Add an of_find_property function that returns a struct property given a property name. Then change the get_property function to use that routine internally. Signed-off-by:
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Dave C Boutcher authored
Add support for updating and removing device tree properties. Since we hand out pointers to properties with gay abandon, we can't just free the property storage. Instead we move deleted, or the old copy of an updated property, to a "dead properties" list. Also note, its not feasable to kref device tree properties. we call get_property() all over the kernel in a wild variety of contexts. One consequence of this change is that we now take a read_lock(&devtree_lock) when doing get_property(). Signed-off-by:
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Dave C Boutcher authored
Add support to the proc_device_tree file for removing and updating properties. Remove just removes the proc file, update changes the data pointer within the proc file. The remainder of the device-tree changes occur elsewhere. Signed-off-by:
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Dave C Boutcher authored
Adds a few more hypervisor call constants. Signed-off-by:
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Tom Rini authored
Since the documentation no longer tells people to 'make bzImage', and with the previous patch nothing more than 'make' is required to get the right bootable images (just like on i386 now), this removes the bzImage -> zImage target redirect on ARCH=powerpc Signed-off-by:
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- 12 Jan, 2006 13 commits
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Linus Torvalds authored
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John W. Linville authored
At least some versions of the via-velocity hardware only support checksumming IPv4 frames in hardware. However, the driver is currently setting the NETIF_F_HW_CSUM flag, which indicates support for more than just IPv4. This results in errors when trying to use IPv6 over via-velocity hardware. Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
Jeff Garzik <jgarzik@pobox.com>
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Johannes Berg authored
The comments in ieee80211.h claim that one doesn't need to set the len parameter of the stats struct. But if one doesn't, the management frames are read far over the memory they actually occupy causing badness. Signed-Off-By:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
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Jay Vosburgh authored
I believe I see the race Michael refers to (tlb_choose_channel may set head, which tlb_init_slave clears), although I was not able to reproduce it. I have updated his patch for the current netdev-2.6.git tree and added a version update. His original comment follows: Our systems have been crashing during testing of PCI HotPlug support in the various networking components. We've faulted in the bonding driver due to a bug in bond_alb.c:tlb_clear_slave() In that routine, the last modification to the TLB hash table is made without protection of the lock, allowing a race that can lead tlb_choose_channel() to select an invalid table element. -J Signed-off-by: -
Dan Williams authored
This patch allows the Atmel driver to work correctly with wpa_supplicant and other programs that require some conformance with WEXT-18. It should not affect current behavior of the driver. The patch does four things: 1) Implements SIOCSIWENCODEEXT, SIOCGIWENCODEEXT, SIOCSIWAUTH, and SIOCGIWAUTH calls for unencrypted and WEP operation 2) Accepts zero-filled addresses for SIOCSIWAP, which are legal and should turn off any previous forced WAP address 3) Sends association and de-association events to userspace at most of the appropriate times 4) Fixes erroneous order of CIPHER_SUITE_WEP_* arguments in one location which are actually unused anyway Signed-off-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
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Eric Sesterhenn / snakebyte authored
Replace the MODULE_PARM usage in uli526x.c with module_param. Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by:
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Kumar Gala authored
Make the driver produce the string used by phy_connect and have board specific code pass the integer mii bus id and phy device id for the specific controller instance. Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Kumar Gala authored
Add the PHY_ID_FMT macro to ensure that the format of the id string used by a driver to match to its specific phy is consistent between the mdio_bus and the driver. Signed-off-by:
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Kumar Gala authored
We can now have the gianfar mii platform device have a proper resource for the IO memory region for its registers. Previously we passed this information that the platform_data structure because we couldn't handle overlapping memory regions for platform devices. Signed-off-by:
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Kumar Gala authored
Missing include of <linux/in.h> to get definition of IPPROTO_UDP. Signed-off-by:
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dann frazier authored
airo.c currently has MICSUPPORT enabled, which requires CONFIG_CRYPTO. A user reported a build failure which is due to the lack of a Kconfig dependency. See http://bugs.debian.org/344205. This patch makes Kconfig enforce this dependency. Signed-off-by:
dann frazier <dannf@debian.org> Signed-off-by:
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