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* MAINTAINERS: Add PowerPC patternsJoe Perches2009-12-091-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | On Fri, 2009-12-04 at 20:59 +1100, Benjamin Herrenschmidt wrote: > On Fri, 2009-12-04 at 10:34 +0100, Jean Delvare wrote: > > I've sent it to linuxppc-dev@ozlabs.org on October 14th. This is the > > address which is listed 22 times in MAINTAINERS. If it isn't correct, > > then please update MAINTAINERS. > No it's fine both shoul work. Your patches are there, just waiting for > me to pick them up, I was just firing a reminder to the rest of the CC > list :-) (and I do remember fwd'ing a couple of your patches to the > list, for some reason they didn't make it to patchwork back then, that > was a few month ago). > Anyways, I've been stretched thin with all sort of stuff lately, so bear > with me if I'm a bit slow at taking or testing stuff, I'm doing my best. Adding patterns to the PowerPC sections of MAINTAINERS is useful. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Track previous CPPR values to correctly EOI interruptsMark Nelson2009-12-091-5/+51
| | | | | | | | | | | | | | | | | | | | | At the moment when we EOI an interrupt we set the CPPR back to 0xFF regardless of its previous value. This could lead to problems if we take an interrupt with a priority of 5, but before EOIing it we get an IPI which has a priority of 4. The problem is that at the moment when we EOI the IPI we will set the CPPR to 0xFF, but it should really be set back to 5 (the previous priority). To keep track of the previous CPPR values we create the xics_cppr structure that has an array for CPPR values and an index pointing to the current priority. This can easily grow if new priorities get added in the future. This will also be useful because the partition adjunct option of upcoming machines will update the H_XIRR hcall to accept the CPPR as a parameter. Signed-off-by: Mark Nelson <markn@au1.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/pseries: Correct pseries/dlpar.c build break without CONFIG_SMPNathan Fontenot2009-12-091-94/+94
| | | | | | | | | | | | | | | | | | | The recent patch to add cpu offline/online as part of the DLPAR process for pseries causes a build break if CONFIG_SMP is not defined. Original patch here; http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-November/078299.html This corrects the build break by moving the online_node_cpus and offline_node_cpus under the #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE portions of dlpar.c. This patch also slightly modifies the online_node_cpus and offline_node_cpus routines to prepend dlpar_ to the them and make them static. These two routine are only used in the dlpar add/remove of cpus and these changes should help clarify that. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Make "intspec" pointers in irq_host->xlate() constRoman Fietze2009-12-0921-23/+23
| | | | | | | | | | Writing a driver using SCLPC on the MPC5200B I detected, that the intspec arrays to map irqs to Linux virq cannot be const, because the mapping and xlate functions only take non const pointers. All those functions do not modify the intspec, so a const pointer could be used. Signed-off-by: Roman Fietze <roman.fietze@telemotive.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: DTLB Miss cleanupJoakim Tjernlund2009-12-091-6/+11
| | | | | | | Use symbolic constant for PRESENT and avoid branching. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Remove DIRTY pte handling in DTLB Error.Joakim Tjernlund2009-12-091-96/+0
| | | | | | | | There is no need to do set the DIRTY bit directly in DTLB Error. Trap to do_page_fault() and let the generic MM code do the work. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Start using dcbX instructions in various copy routinesJoakim Tjernlund2009-12-092-42/+0
| | | | | | | | Now that 8xx can fixup dcbX instructions, start using them where possible like every other PowerPc arch do. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Restore _PAGE_WRITETHRUJoakim Tjernlund2009-12-092-2/+11
| | | | | | | | | | | 8xx has not had WRITETHRU due to lack of bits in the pte. After the recent rewrite of the 8xx TLB code, there are two bits left. Use one of them to WRITETHRU. Perhaps use the last SW bit to PAGE_SPECIAL or PAGE_FILE? Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Add missing Guarded setting in DTLB Error.Joakim Tjernlund2009-12-091-3/+10
| | | | | | | | only DTLB Miss did set this bit, DTLB Error needs too otherwise the setting is lost when the page becomes dirty. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Fixup DAR from buggy dcbX instructions.Joakim Tjernlund2009-12-091-4/+143
| | | | | | | | | | This is an assembler version to fixup DAR not being set by dcbX, icbi instructions. There are two versions, one uses selfmodifing code, the other uses a jump table but is much bigger(default). Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.Joakim Tjernlund2009-12-091-1/+14
| | | | | | | | | | | dcbz, dcbf, dcbi, dcbst and icbi do not set DAR when they cause a DTLB Error. Dectect this by tagging DAR with 0x00f0 at every exception exit that modifies DAR. Test for DAR=0x00f0 in DataTLBError and bail to handle_page_fault(). Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Update TLB asm so it behaves as linux mm expects.Joakim Tjernlund2009-12-092-55/+57
| | | | | | | | | | | | | | | | | | Update the TLB asm to make proper use of _PAGE_DIRY and _PAGE_ACCESSED. Get rid of _PAGE_HWWRITE too. Pros: - I/D TLB Miss never needs to write to the linux pte. - _PAGE_ACCESSED is only set on TLB Error fixing accounting - _PAGE_DIRTY is mapped to 0x100, the changed bit, and is set directly when a page has been made dirty. - Proper RO/RW mapping of user space. - Free up 2 SW TLB bits in the linux pte(add back _PAGE_WRITETHRU ?) - kernel RO/user NA support. Cons: - A few more instructions in the TLB Miss routines. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/8xx: Invalidate non present TLBsJoakim Tjernlund2009-12-091-1/+7
| | | | | | | | | | 8xx sometimes need to load a invalid/non-present TLBs in it DTLB asm handler. These must be invalidated separaly as linux mm don't. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge commit 'jwb/next' into nextBenjamin Herrenschmidt2009-12-092-23/+13
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| * powerpc/44x: Fix PCI node in Yosemite DTSCurtis Wald2009-12-041-12/+2
| | | | | | | | | | | | | | | | | | The stanza for PCI was copied from Bamboo which has four PCI slots. Yosemite only has one PCI slot which is mapped to IDSEL 12, ADDR 22, IRQ2 Vector 25, INTA. Signed-off-by: Curtis Wald <cwald@watchguardvideo.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * powerpc/44x: Fix DMA ranges in DTS file for Katmai board.pbathija@amcc.com2009-12-041-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Set PCI-E node inbound DMA ranges size to 4GB for correct boot up of Katmai. Signed-off-by: Pravin Bathija <pbathija@amcc.com> Acked-by: Feng Kan <fkan@amcc.com> Acked-by: Prodyut Hazarika <phazarika@amcc.com> Acked-by: Loc Ho <lho@amcc.com> Acked-by: Tirumala Reddy Marri <tmarri@amcc.com> Acked-by: Victor Gallardo <vgallardo@amcc.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* | Merge commit 'gcl/next' into nextBenjamin Herrenschmidt2009-12-0917-320/+1609
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| * | mpc52xx/wdt: remove obsolete old WDT implementationAlbrecht Dreß2009-12-083-295/+3
| | | | | | | | | | | | | | | | | | | | | | | | Remove the old WDT implementation. Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> Acked-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | mpc52xx/wdt: merge WDT code into the GPT driverAlbrecht Dreß2009-11-132-17/+307
| | | | | | | | | | | | | | | | | | | | | Merge the WDT code into the GPT interface. Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | mpc52xx/wdt: OF property to enable the WDT on bootAlbrecht Dreß2009-11-131-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | Add the "fsl,wdt-on-boot" OF property as to reserve a GPT as WDT which may be a requirement in safety-related (e.g. ISO/EN 61508) applications. Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | mpc5200/gpt: tiny fix for gpt period limitationAlbrecht Dreß2009-11-122-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | This patch changes the period parameter of mpc52xx_gpt_start_timer to a u64 to support larger timeout periods. Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | mmc: fix missing module license declaration in of_mmc_spi.cGrant Likely2009-11-041-0/+2
| | | | | | | | | | | | | | | | | | Driver cannot be used as a module without this patch. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | powerpc: tiny memcpy_(to|from)io optimisationAlbrecht Dreß2009-11-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | This trivial patch changes memcpy_(to|from)io as to transfer as many 32-bit words as possible in 32-bit accesses (in the current solution, the last 32-bit word was transferred as 4 byte accesses). Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/mpc52xx: replace printk with dev_errWolfram Sang2009-11-041-3/+2
| | | | | | | | | | | | | | | | | | | | | To easily identify which device has problems. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | Xilinx: SPI: Fix bits_per_word for transfersJohn Linn2009-11-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bits_per_word value can be set for each transfer, or can be set to zero in each transfer in which case it should default to the value in the driver. The driver was fixed to properly check the bits_per_word in the transfer that is passed in. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/mpc52xx-psc-spi: check for valid PSCWolfram Sang2009-11-041-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | This driver calls mpc52xx_set_psc_clkdiv() but doesn't check its return value to see if the PSC is actually valid for SPI use. Add the check and a hint for the user. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | powerpc/5200: add LocalPlus bus FIFO device driverJohn Bonesio2009-11-044-0/+605
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a driver for the FIFO device on the LocalPlus bus on an mpc5200 system. The driver supports programmed I/O through the FIFO as well as setting up DMA via the BestComm engine through the FIFO. Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | powerpc/5200: add general purpose timer API for the MPC5200Grant Likely2009-11-042-10/+130
| | | | | | | | | | | | | | | | | | | | | This patch adds an interface for controlling the timer function of the MPC5200 GPT devices. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | powerpc/5200: Add mpc5200-spi (non-PSC) device driverGrant Likely2009-11-044-0/+539
| | | | | | | | | | | | | | | | | | | | | Adds support for the dedicated SPI device on the Freescale MPC5200(b) SoC. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * | spi/mpc5200: Register SPI devices described in device treeGrant Likely2009-11-041-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | Add call to of_register_spi_devices() to register SPI devices described in the OF device tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
* | | powerpc/pseries: Serialize cpu hotplug operations during deactivate Vs ↵Gautham R Shenoy2009-12-093-10/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | deallocate Currently the cpu-allocation/deallocation process comprises of two steps: - Set the indicators and to update the device tree with DLPAR node information. - Online/offline the allocated/deallocated CPU. This is achieved by writing to the sysfs tunables "probe" during allocation and "release" during deallocation. At the sametime, the userspace can independently online/offline the CPUs of the system using the sysfs tunable "online". It is quite possible that when a userspace tool offlines a CPU for the purpose of deallocation and is in the process of updating the device tree, some other userspace tool could bring the CPU back online by writing to the "online" sysfs tunable thereby causing the deallocate process to fail. The solution to this is to serialize writes to the "probe/release" sysfs tunable with the writes to the "online" sysfs tunable. This patch employs a mutex to provide this serialization, which is a no-op on all architectures except PPC_PSERIES Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | pseries/pseries: Add code to online/offline CPUs of a DLPAR nodeGautham R Shenoy2009-12-091-0/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the cpu-allocation/deallocation on pSeries is a two step process from the Userspace. - Set the indicators and update the device tree by writing to the sysfs tunable "probe" during allocation and "release" during deallocation. - Online / Offline the CPUs of the allocated/would_be_deallocated node by writing to the sysfs tunable "online". This patch adds kernel code to online/offline the CPUs soon_after/just_before they have been allocated/would_be_deallocated. This way, the userspace tool that performs DLPAR operations would only have to deal with one set of sysfs tunables namely "probe" and release". Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc: stop_this_cpu: remove the cpu from the online map.Valentine Barshak2009-12-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | Remove the CPU from the online map to prevent smp_call_function from sending messages to a stopped CPU. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Add kernel based CPU DLPAR handlingNathan Fontenot2009-12-091-0/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the specific routines to probe and release (add and remove) cpu resource for the powerpc pseries platform and registers these handlers with the ppc_md callout structure. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | sysfs/cpu: Add probe/release filesNathan Fontenot2009-12-096-0/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Version 3 of this patch is updated with documentation added to Documentation/ABI. There are no changes to any of the C code from v2 of the patch. In order to support kernel DLPAR of CPU resources we need to provide an interface to add (probe) and remove (release) the resource from the system. This patch Creates new generic probe and release sysfs files to facilitate cpu probe/release. The probe/release interface provides for allowing each arch to supply their own routines for implementing the backend of adding and removing cpus to/from the system. This also creates the powerpc specific stubs to handle the arch callouts from writes to the sysfs files. The creation and use of these files is regulated by the CONFIG_ARCH_CPU_PROBE_RELEASE option so that only architectures that need the capability will have the files created. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/pseries: Kernel DLPAR InfrastructureNathan Fontenot2009-12-094-2/+347
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Dynamic Logical Partitioning capabilities of the powerpc pseries platform allows for the addition and removal of resources (i.e. CPU's, memory, and PCI devices) from a partition. The removal of a resource involves removing the resource's node from the device tree and then returning the resource to firmware via the rtas set-indicator call. To add a resource, it is first obtained from firmware via the rtas set-indicator call and then a new device tree node is created using the ibm,configure-coinnector rtas call and added to the device tree. This patch provides the kernel DLPAR infrastructure in a new filed named dlpar.c. The functionality provided is for acquiring and releasing a resource from firmware and the parsing of information returned from the ibm,configure-connector rtas call. Additionally this exports the pSeries reconfiguration notifier chain so that it can be invoked when device tree updates are made. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/therm_adt746x: Record pwm invert bit at module load time]Darrick J. Wong2009-12-091-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 0512a9a8e277a9de2820211eef964473b714ae65, we unilaterally zero the "pwm invert" bit in the fan behavior configuration register. On my PowerBook G4, this results in the fans going to full speed at low temperature and shutting off at high temperature because the pwm invert bit is supposed to be set. Therefore, record the pwm invert bit at driver load time, and write the bit into the fan behavior control register. This restores correct behavior on my PBG4 and should work around the bit being set to the wrong value after suspend/resume (which is what the original patch was trying to fix). It also fixes a minor omission where the pwm invert bit correction is NOT performed when switching into automatic mode. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> CC: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | agp/uninorth: Unify U3 and pre-U3 insert_memory and remove_memory hooks.Michel Dänzer2009-12-091-53/+11
| | | | | | | | | | | | | | | Signed-off-by: Michel Dänzer <daenzer@vmware.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | agp/uninorth: Also handle user memory types in u3_remove_memory().Michel Dänzer2009-12-091-7/+22
| | | | | | | | | | | | | | | | | | | | | Also short-circuit empty updates. Signed-off-by: Michel Dänzer <daenzer@vmware.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | offb: Add support for framebuffer handoff to offb.Dave Airlie2009-12-091-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | This allows offb to be used for initial framebuffer, and a kms driver to take over later in the boot sequence. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | libata/drivers: Add driver for Apple "MacIO" IDE controllerBenjamin Herrenschmidt2009-12-093-0/+1438
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a libata driver for the "macio" IDE controller used on most Apple PowerMac and PowerBooks. It's a libata equivalent of drivers/ide/ppc/pmac.c It supports all the features of its predecessor, including mediabay hotplug and suspend/resume. It should also support module load/unload. The timing calculations have been simplified to use pre-calculated tables compared to drivers/ide/pmac.c and it uses the new mediabay interface provided by a previous patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Tejun Heo <tj@kernel.org>
* | | libata/sff: Use ops->bmdma_stop instead of ata_bmdma_stop()Benjamin Herrenschmidt2009-12-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | In libata-sff, ata_sff_post_internal_cmd() directly calls ata_bmdma_stop() instead of ap->ops->bmdma_stop(). This can be a problem for controllers that use their own bmdma_stop for which the generic sff one isn't suitable Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeff Garzik <jgarzik@redhat.com>
* | | powerpc/macio: Rework hotplug media bay supportBenjamin Herrenschmidt2009-12-095-275/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hotplug mediabay has tendrils deep into drivers/ide code which makes a libata port reather difficult. In addition it's ugly and could be done better. This reworks the interface between the mediabay and the rest of the world so that: - Any macio_driver can now have a mediabay_event callback which will be called when that driver sits on a mediabay and it's been either plugged or unplugged. The device type is passed as an argument. We can now move all the IDE cruft into the IDE driver itself - A check_media_bay() function can be used to take a peek at the type of device currently in the bay if any, a cleaner variant of the previous function with the same name. - A pair of lock/unlock functions are exposed to allow the IDE driver to block the hotplug callbacks during the initial setup and probing of the bay in order to avoid nasty race conditions. - The mediabay code no longer needs to spin on the status register of the IDE interface when it detects an IDE device, this is done just fine by the IDE code itself Overall, less code, simpler, and allows for another driver than our old drivers/ide based one. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/macio: Add dma_parms support to macioBenjamin Herrenschmidt2009-12-082-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | This adds dma_parms to macio devices and initializes them with default values. This will allow pata_macio to setup the appropriate max segment size for the block layer. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/macio: Add devres support to macio_deviceBenjamin Herrenschmidt2009-12-082-0/+49
| | | | | | | | | | | | | | | | | | | | | This adds some basic devres support. When enabled via macio_enable_devres() resources requested by drivers will be automatically released. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/kvm: Sync guest visible MMU stateAlexander Graf2009-12-088-16/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently userspace has no chance to find out which virtual address space we're in and resolve addresses. While that is a big problem for migration, it's also unpleasent when debugging, as gdb and the monitor don't work on virtual addresses. This patch exports enough of the MMU segment state to userspace to make debugging work and thus also includes the groundwork for migration. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | hvc_console: Export (GPL'ed) hvc_removeAmit Shah2009-12-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The virtio console, which uses hvc, will get the ability to hot-unplug ports. Export hvc_remove so that virtio_console can disassociate with hvc. Signed-off-by: Amit Shah <amit.shah@redhat.com> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/windfarm: Add detection for second cpu pumpBolko Maass2009-12-081-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Windfarm SMU control is explicitly missing support for a second CPU pump in G5 PowerMacs. Such machines actually exist (specifically Quads with a second pump), so this patch adds detection for it. Signed-off by: Bolko Maass <bmaass@math.uni-bremen.de> CC: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/via-pmu: Convert to proc_fops/seq_fileAlexey Dobriyan2009-12-081-69/+91
| | | | | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | powerpc/mm: Fix pgtable cache cleanup with CONFIG_PPC_SUBPAGE_PROTDavid Gibson2009-12-086-49/+51
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a0668cdc154e54bf0c85182e0535eea237d53146 cleans up the handling of kmem_caches for allocating various levels of pagetables. Unfortunately, it conflicts badly with CONFIG_PPC_SUBPAGE_PROT, due to the latter's cleverly hidden technique of adding some extra allocation space to the top level page directory to store the extra information it needs. Since that extra allocation really doesn't fit into the cleaned up page directory allocating scheme, this patch alters CONFIG_PPC_SUBPAGE_PROT to instead allocate its struct subpage_prot_table as part of the mm_context_t. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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