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2008-02-08CONFIG_HIGHPTE vs. sub-page page tables.Martin Schwidefsky1-3/+6
Background: I've implemented 1K/2K page tables for s390. These sub-page page tables are required to properly support the s390 virtualization instruction with KVM. The SIE instruction requires that the page tables have 256 page table entries (pte) followed by 256 page status table entries (pgste). The pgstes are only required if the process is using the SIE instruction. The pgstes are updated by the hardware and by the hypervisor for a number of reasons, one of them is dirty and reference bit tracking. To avoid wasting memory the standard pte table allocation should return 1K/2K (31/64 bit) and 2K/4K if the process is using SIE. Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means the s390 version for pte_alloc_one cannot return a pointer to a struct page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one cannot return a pointer to a pte either, since that would require more than 32 bit for the return value of pte_alloc_one (and the pte * would not be accessible since its not kmapped). Solution: The only solution I found to this dilemma is a new typedef: a pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a later patch. For everybody else it will be a (struct page *). The additional problem with the initialization of the ptl lock and the NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and a destructor pgtable_page_dtor. The page table allocation and free functions need to call these two whenever a page table page is allocated or freed. pmd_populate will get a pgtable_t instead of a struct page pointer. To get the pgtable_t back from a pmd entry that has been installed with pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page call in free_pte_range and apply_to_pte_range. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08procfs: constify function pointer tablesJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-By: David Howells <dhowells@redhat.com> Acked-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06scheduled OSS driver removalAdrian Bunk1-81/+0
This patch contains the scheduled removal of OSS drivers whose config options have been removed in 2.6.23. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06remove support for un-needed _extratext sectionRobin Getz1-5/+0
When passing a zero address to kallsyms_lookup(), the kernel thought it was a valid kernel address, even if it is not. This is because is_ksym_addr() called is_kernel_extratext() and checked against labels that don't exist on many archs (which default as zero). Since PPC was the only kernel which defines _extra_text, (in 2005), and no longer needs it, this patch removes _extra_text support. For some history (provided by Jon): http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019734.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019736.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019751.html [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jon Loeliger <jdl@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06Remove pointless casts from void pointersJeff Garzik2-2/+2
Mostly in and around irq handlers. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck Tony" <tony.luck@intel.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Karsten Keil <kkeil@suse.de> Acked-by: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: David Brownell <david-b@pacbell.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Holger Schurig <hs4233@mail.mn-solutions.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05add mm argument to pte/pmd/pud/pgd_freeBenjamin Herrenschmidt1-3/+3
(with Martin Schwidefsky <schwidefsky@de.ibm.com>) The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as first argument. The free functions do not get the mm_struct argument. This is 1) asymmetrical and 2) to do mm related page table allocations the mm argument is needed on the free function as well. [kamalesh@linux.vnet.ibm.com: i386 fix] [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-03Move Kconfig.instrumentation to arch/Kconfig and init/KconfigMathieu Desnoyers1-2/+0
Move the instrumentation Kconfig to arch/Kconfig for architecture dependent options - oprofile - kprobes and init/Kconfig for architecture independent options - profiling - markers Remove the "Instrumentation Support" menu. Everything moves to "General setup". Delete the kernel/Kconfig.instrumentation file. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03Add HAVE_KPROBESMathieu Desnoyers1-0/+1
Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config KPROBES_SUPPORT def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... - Use HAVE_KPROBES - Use a select - Yet another update : Moving to HAVE_* now. - Update ARM for kprobes support. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jeff Dike <jdike@addtoit.com> Cc: David Howells <dhowells@redhat.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03Add HAVE_OPROFILEMathieu Desnoyers1-0/+1
Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config ARCH_SUPPORTS_KPROBES def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... Changelog : - Moving to HAVE_*. - Add AVR32 oprofile. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-31Merge branch 'linux-2.6'Paul Mackerras8-33/+10
2008-01-31Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xxPaul Mackerras1-0/+36
2008-01-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25Linus Torvalds2-4/+4
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.25: (1470 commits) [IPV6] ADDRLABEL: Fix double free on label deletion. [PPP]: Sparse warning fixes. [IPV4] fib_trie: remove unneeded NULL check [IPV4] fib_trie: More whitespace cleanup. [NET_SCHED]: Use nla_policy for attribute validation in ematches [NET_SCHED]: Use nla_policy for attribute validation in actions [NET_SCHED]: Use nla_policy for attribute validation in classifiers [NET_SCHED]: Use nla_policy for attribute validation in packet schedulers [NET_SCHED]: sch_api: introduce constant for rate table size [NET_SCHED]: Use typeful attribute parsing helpers [NET_SCHED]: Use typeful attribute construction helpers [NET_SCHED]: Use NLA_PUT_STRING for string dumping [NET_SCHED]: Use nla_nest_start/nla_nest_end [NET_SCHED]: Propagate nla_parse return value [NET_SCHED]: act_api: use PTR_ERR in tcf_action_init/tcf_action_get [NET_SCHED]: act_api: use nlmsg_parse [NET_SCHED]: act_api: fix netlink API conversion bug [NET_SCHED]: sch_netem: use nla_parse_nested_compat [NET_SCHED]: sch_atm: fix format string warning [NETNS]: Add namespace for ICMP replying code. ...
2008-01-28[netdrvr] irq handler minor cleanups in several driversJeff Garzik2-4/+4
* use irq_handler_t where appropriate * no need to use 'irq' function arg, its already stored in a data struct * rename irq handler 'irq' argument to 'dummy', where the function has been analyzed and proven not to use its first argument. * remove always-false "dev_id == NULL" test from irq handlers * remove pointless casts from void* * declance: irq argument is not const * add KERN_xxx printk prefix * fix minor whitespace weirdness Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-01-28all archs: consolidate init and exit sections in vmlinux.lds.hSam Ravnborg1-4/+4
This patch consolidate all definitions of .init.text, .init.data and .exit.text, .exit.data section definitions in the generic vmlinux.lds.h. This is a preparational patch - alone it does not buy us much good. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28[PPC] Remove 85xx from arch/ppcKumar Gala53-14083/+16
85xx exists in arch/powerpc as well as cuImage support to boot from a u-boot that doesn't support device trees. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28[PPC] Remove 83xx from arch/ppcKumar Gala18-2978/+13
83xx exists in arch/powerpc as well as cuImage support to boot from a u-boot that doesn't support device trees. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28[POWERPC] CPM: Rename commproc to cpm1 and cpm2_common.c to cpm2.cJochen Friedrich12-14/+14
Rename commproc.[ch] to cpm1.[ch] to be more consistent with cpm2. Also rename cpm2_common.c to cpm2.c as suggested by Scott Wood. Adjust the includes accordingly. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28[POWERPC] 8xx: Rename m8xx_pic_init to mpc8xx_pics_initJochen Friedrich1-1/+0
m8xx_pic_init calls both mpc8xx_pic_init and cpm_pic_init. Renaming the function to use the same name space as the rest of the mpc8xx specific funtions and to be more meaningful. m8xx_pic_init is declared in ppc8xx_pic.h but defined nowhere in the ppc tree. Remove it. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28[POWERPC] 8xx: Remove unused m8xx_cpm_hostalloc/free/dump()Jochen Friedrich1-38/+0
m8xx_cpm_hostalloc is still defined in commproc.c, but no users are left in the kernel tree. m8xx_cpm_hostfree and m8xx_cpm_hostdump are only defined in the headers. Remove this dead code. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28Merge branch 'orion' into develRussell King1-1/+0
* orion: (26 commits) [ARM] Orion: implement power-off method for QNAP TS-109/209 [ARM] Orion: add support for QNAP TS-109/TS-209 [ARM] Orion: I2C support [I2C] i2c-mv64xxx: Don't set i2c_adapter.retries [I2C] Split mv643xx I2C platform support [ARM] Orion: enable CONFIG_RTC_DRV_M41T80 for D-Link DNS-323 [ARM] Orion defconfig [ARM] Orion: add support for Orion/MV88F5181 based D-Link DNS-323 [ARM] Orion: MV88F5181 support bits [ARM] Orion: Buffalo/Revogear Kurobox Pro support [ARM] OrionNAS RD board support [ARM] Orion: support for Marvell Orion-2 (88F5281) Development Board [ARM] Orion: common platform setup for Gigabit Ethernet port [ARM] Orion: platform device registration for UART, USB and NAND [ARM] Orion: system timer support [ARM] Orion edge GPIO IRQ support [ARM] Orion: IRQ support [ARM] Orion: provide GPIO method for enabling hardware assisted blinking [ARM] Orion: GPIO support [ARM] Orion: programable address map support ... Conflicts: arch/arm/Kconfig arch/arm/Makefile Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-27i2c: the scheduled I2C RTC driver removalAdrian Bunk3-62/+0
This patch contains the scheduled removal of legacy I2C RTC drivers with replacement drivers. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-01-26[POWERPC] Add common clock setting routine mpc52xx_psc_set_clkdiv()Grant Likely1-0/+36
PSC drivers should not access the CDM registers directly. Instead provide a common routine for setting the PSC clock parameters with the required locking. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-26[I2C] i2c-mv64xxx: Don't set i2c_adapter.retriesJean Delvare1-1/+0
I2C adapter drivers are supposed to handle retries on nack by themselves if they do, so there's no point in setting .retries if they don't. As this retry mechanism is going away (at least in its current form), clean this up now so that we don't get build failures later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Mark A. Greer <mgreer@mvista.com>
2008-01-24Driver core: change sysdev classes to use dynamic kobject namesKay Sievers3-3/+3
All kobjects require a dynamically allocated name now. We no longer need to keep track if the name is statically assigned, we can just unconditionally free() all kobject names on cleanup. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24sysctl: kill binary sysctl KERN_PPC_L2CREric W. Biederman1-1/+0
: Stefan Roese <sr@denx.de> said: > ppc: 4xx: sysctl table check failed: /kernel/l2cr .1.31 Missing strategy > > I'm seeing this error message when booting an recent arch/ppc kernel on > 4xx platforms (tested on Ocotea and other 4xx platforms). Booting NFS > rootfs still works fine, but this message kind of makes me "nervous". > This is not seen on 4xx arch/powerpc platforms. Here the bootlog: Because the data field was never filled and a binary sysctl handler was never written this sysctl has never been usable through the sys_sysctl interface. So just remove the binary sysctl number. Making the kernel sanity checks happy. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Reported-by: Stefan Roese <sr@denx.de> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Paul Mackerras <paulus@samba.org> 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>
2008-01-23[POWERPC] Move RapidIO support code from arch/ppcKumar Gala8-1010/+3
Do just enough to move the RapidIO support code for 85xx over from arch/ppc into arch/powerpc and make it still build. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-12-23[POWERPC] 4xx: Fix TLB 0 problem with CONFIG_SERIAL_TEXT_DEBUGStefan Roese2-36/+17
Right now TLB entry 0 ist used as UART0 mapping for the early debug output (via CONFIG_SERIAL_TEXT_DEBUG). This causes problems when many TLB's get used upon Linux bootup (e.g. while PCIe scanning behind bridges and/or switches on 440SPe platforms). This will overwrite the TLB 0 entry and further debug output's may crash/hang the system. This patch moves the early debug UART0 TLB entry from 0 to 62 as done in arch/powerpc. This way it is in the "pinned" area and will not get overwritten. Also the arch/ppc/mm/44x_mmu.c code is now synced with the newer code from arch/powerpc. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23[POWERPC] Reworking machine check handling and Fix 440/440ABenjamin Herrenschmidt1-31/+67
This adds a cputable function pointer for the CPU-side machine check handling. The semantic is still the same as the old one, the one in ppc_md. overrides the one in cputable, though ultimately we'll want to change that so the CPU gets first. This removes CONFIG_440A which was a problem for multiplatform kernels and instead fixes up the IVOR at runtime from a setup_cpu function. The "A" version of the machine check also tweaks the regs->trap value to differenciate the 2 versions at the C level. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-20[POWERPC] arch/ppc: Remove an unnecessary pci_dev_putJulia Lawall1-1/+0
Remove an unnecessary pci_dev_put. pci_dev_put is called implicitly by the subsequent call to pci_get_device. The problem was detected using the following semantic patch, and corrected by hand. @@ expression dev; expression E; @@ - pci_dev_put(dev) ... when != dev = E - pci_get_device(...,dev) Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20[POWERPC] arch/ppc: Remove duplicate includesLucas Woods7-7/+0
Signed-off-by: Lucas Woods <woodzy@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20[POWERPC] Don't cast a struct pointer to list_head pointerLi Zefan1-1/+1
The casting is safe only when the list_head member is the first member of the structure, and even then it is better to use the address of the list_head structure member. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20[POWERPC] arch/ppc/: Spelling fixesjoe@perches.com2-2/+2
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-10Merge branch 'linux-2.6'Paul Mackerras2-4/+12
2007-12-07[POWERPC] virtex bug fix: Use canonical value for AC97 interrupt xparamsGrant Likely2-4/+12
The ml300 and ml403 xparameters.h files use different macros for the AC97 interrupt pin assignments. This normalizes them to a canonical value similar to what EDK generates for most other devices. This is needed to get ml300 support to compile in arch/ppc. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-03[POWERPC] Add missing spaces in printk formats in arch/ppcjoe@perches.com1-2/+2
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-03[POWERPC] Remove xmon from ml300 and ml403 defconfig in arch/ppcGrant Likely2-2/+2
xmon is broken under arch/ppc so remove it from the defconfig. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20[POWERPC] Fix 8xx build breakage due to _tlbie changesBenjamin Herrenschmidt2-2/+2
My changes to _tlbie to fix 4xx unfortunately broke 8xx build in a couple of places. This fixes it. Spotted by Olof Johansson. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-20Merge branch 'for-2.6.24' of ↵Paul Mackerras3-0/+39
master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
2007-11-19[POWERPC] 4xx: Use virtual PVR value to init FPU on arch/ppc 440EPJosh Boyer1-0/+7
This fixes arch/ppc 440EP platforms to setup the FPU correctly. A virtual PVR is used, as 440GR platforms share an identical hardware PVR value and do not have an FPU. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-19[POWERPC] 4xx: balance ioremap/ioumap calls for YuccaRoel Kluin1-0/+1
Call iounmap before returning from an error case. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-19[POWERPC] Xilinx: Register AC97 Controller Reference with the platform busJoachim Foerster1-0/+31
Add AC97 platform bus registration for Xilinx Virtex platforms. Signed-off-by: Joachim Foerster <JOFT@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-13[POWERPC] Avoid unpaired stwcx. on some processorsBecky Bruce1-0/+6
The context switch code in the kernel issues a dummy stwcx. to clear the reservation, as recommended by the architecture. However, some processors can have issues if this stwcx to address A occurs while the reservation is already held to a different address B. To avoid this problem, the dummy stwcx. needs to be paired with a dummy lwarx to the same address. This adds the dummy lwarx, and creates a cpu feature bit to indicate which cpus are affected. Tested on mpc8641_hpcn_defconfig in arch/powerpc; build tested in arch/ppc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-08Merge branch 'for-2.6.24' of ↵Paul Mackerras10-23/+68
master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
2007-11-08[POWERPC] i8259: Add disable methodAurelien Jarno1-0/+1
Since commit 76d2160147f43f982dfe881404cfde9fd0a9da21, the NE2000 card is not working anymore on PPC and POWERPC and produces WATCHDOG timeouts. The patch below fixes that the same way it has been done on x86, x86_64 and MIPS. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-08[POWERPC] Fix build break in arch/ppc/syslib/m8260_setup.cOlof Johansson1-6/+7
Fix build break and warnings in current mainline git: arch/ppc/syslib/m8260_setup.c: In function 'm8260_setup_arch': arch/ppc/syslib/m8260_setup.c:63: error: implicit declaration of function 'identify_ppc_sys_by_name_and_id' arch/ppc/syslib/m8260_setup.c:64: warning: passing argument 1 of 'in_be32' makes pointer from integer without a cast arch/ppc/syslib/m8260_setup.c: In function 'm8260_show_cpuinfo': arch/ppc/syslib/m8260_setup.c:158: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int' arch/ppc/syslib/m8260_setup.c:158: warning: format '%d' expects type 'int', but argument 6 has type 'long unsigned int' arch/ppc/syslib/m8260_setup.c:158: warning: format '%u' expects type 'unsigned int', but argument 7 has type 'long unsigned int' arch/ppc/syslib/m8260_setup.c:158: warning: format '%u' expects type 'unsigned int', but argument 8 has type 'long unsigned int' arch/ppc/syslib/m8260_setup.c:158: warning: format '%u' expects type 'unsigned int', but argument 9 has type 'long unsigned int' make[1]: *** [arch/ppc/syslib/m8260_setup.o] Error 1 make[1]: *** Waiting for unfinished jobs.... Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-01[POWERPC] ppc405 Fix arithmatic rollover bug when memory size under 16MGrant Likely1-9/+8
mmu_mapin_ram() loops over total_lowmem to setup page tables. However, if total_lowmem is less that 16M, the subtraction rolls over and results in a number just under 4G (because total_lowmem is an unsigned value). This patch rejigs the loop from countup to countdown to eliminate the bug. Special thanks to Magnus Hjorth who wrote the original patch to fix this bug. This patch improves on his by making the loop code simpler (which also eliminates the possibility of another rollover at the high end) and also applies the change to arch/powerpc. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] 4xx: Deal with 44x virtually tagged icacheBenjamin Herrenschmidt3-0/+33
The 44x family has an interesting "feature" which is a virtually tagged instruction cache (yuck !). So far, we haven't dealt with it properly, which means we've been mostly lucky or people didn't report the problems, unless people have been running custom patches in their distro... This is an attempt at fixing it properly. I chose to do it by setting a global flag whenever we change a PTE that was previously marked executable, and flush the entire instruction cache upon return to user space when that happens. This is a bit heavy handed, but it's hard to do more fine grained flushes as the icbi instruction, on those processor, for some very strange reasons (since the cache is virtually mapped) still requires a valid TLB entry for reading in the target address space, which isn't something I want to deal with. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] 4xx: Fix 4xx flush_tlb_page()Benjamin Herrenschmidt6-13/+21
On 4xx CPUs, the current implementation of flush_tlb_page() uses a low level _tlbie() assembly function that only works for the current PID. Thus, invalidations caused by, for example, a COW fault triggered by get_user_pages() from a different context will not work properly, causing among other things, gdb breakpoints to fail. This patch adds a "pid" argument to _tlbie() on 4xx processors, and uses it to flush entries in the right context. FSL BookE also gets the argument but it seems they don't need it (their tlbivax form ignores the PID when invalidating according to the document I have). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01[POWERPC] allocation fix in ppc/platforms/4xx/luan.cRoel Kluin1-1/+6
Don't allocate hose2 when when hose1 can't be allocated and free hose1 when hose2 can't be allocated. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-10-20kbuild: restore arch/{ppc/xtensa}/boot cflagsMilton Miller1-0/+2
Commit 9a39e273d4df0560c724c5fe71f6314a0583ca2b removed the boot directory addition to CFLAGS that was being used by the subdirectory builds. For the other files, that patch set EXTRA_CFLAGS, but Makefile.build explicitly sets that to empty as it is explicitly for a single directory only. Append to KBUILD_CFLAGS instead. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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