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* xen: deal with stale cr3 values when unpinning pagetablesJeremy Fitzhardinge2007-10-16
| | | | | | | | | | | | | | | | | | | | | When a pagetable is no longer in use, it must be unpinned so that its pages can be freed. However, this is only possible if there are no stray uses of the pagetable. The code currently deals with all the usual cases, but there's a rare case where a vcpu is changing cr3, but is doing so lazily, and the change hasn't actually happened by the time the pagetable is unpinned, even though it appears to have been completed. This change adds a second per-cpu cr3 variable - xen_current_cr3 - which tracks the actual state of the vcpu cr3. It is only updated once the actual hypercall to set cr3 has been completed. Other processors wishing to unpin a pagetable can check other vcpu's xen_current_cr3 values to see if any cross-cpu IPIs are needed to clean things up. [ Stable folks: 2.6.23 bugfix ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Stable Kernel <stable@kernel.org>
* xen: add batch completion callbacksJeremy Fitzhardinge2007-10-16
| | | | | | | | | | | | | This adds a mechanism to register a callback function to be called once a batch of hypercalls has been issued. This is typically used to unlock things which must remain locked until the hypercall has taken place. [ Stable folks: pre-req for 2.6.23 bugfix "xen: deal with stale cr3 values when unpinning pagetables" ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Stable Kernel <stable@kernel.org>
* xen: yield to IPI target if necessaryJeremy Fitzhardinge2007-10-16
| | | | | | | | When sending a call-function IPI to a vcpu, yield if the vcpu isn't running. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
* Clean up duplicate includes in arch/i386/xen/Jesper Juhl2007-10-16
| | | | | | | | This patch cleans up duplicate includes in arch/i386/xen/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
* remove dead code in pgtable_cache_initJeremy Fitzhardinge2007-10-16
| | | | | | | | | | | | | | | | | The conversion from using a slab cache to quicklist left some residual dead code. I note that in the conversion it now always allocates a whole page for the pgd, rather than the 32 bytes needed for a PAE pgd. Was this intended? Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de>
* paravirt: clean up lazy mode handlingJeremy Fitzhardinge2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the set_lazy_mode pv_op is overloaded with 5 functions: 1. enter lazy cpu mode 2. leave lazy cpu mode 3. enter lazy mmu mode 4. leave lazy mmu mode 5. flush pending batched operations This complicates each paravirt backend, since it needs to deal with all the possible state transitions, handling flushing, etc. In particular, flushing is quite distinct from the other 4 functions, and seems to just cause complication. This patch removes the set_lazy_mode operation, and adds "enter" and "leave" lazy mode operations on mmu_ops and cpu_ops. All the logic associated with enter and leaving lazy states is now in common code (basically BUG_ONs to make sure that no mode is current when entering a lazy mode, and make sure that the mode is current when leaving). Also, flush is handled in a common way, by simply leaving and re-entering the lazy mode. The result is that the Xen, lguest and VMI lazy mode implementations are much simpler. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Cc: Zach Amsden <zach@vmware.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Avi Kivity <avi@qumranet.com> Cc: Anthony Liguory <aliguori@us.ibm.com> Cc: "Glauber de Oliveira Costa" <glommer@gmail.com> Cc: Jun Nakajima <jun.nakajima@intel.com>
* paravirt: refactor struct paravirt_ops into smaller pv_*_opsJeremy Fitzhardinge2007-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the paravirt_ops structure into groups of functionally related ops: pv_info - random info, rather than function entrypoints pv_init_ops - functions used at boot time (some for module_init too) pv_misc_ops - lazy mode, which didn't fit well anywhere else pv_time_ops - time-related functions pv_cpu_ops - various privileged instruction ops pv_irq_ops - operations for managing interrupt state pv_apic_ops - APIC operations pv_mmu_ops - operations for managing pagetables There are several motivations for this: 1. Some of these ops will be general to all x86, and some will be i386/x86-64 specific. This makes it easier to share common stuff while allowing separate implementations where needed. 2. At the moment we must export all of paravirt_ops, but modules only need selected parts of it. This allows us to export on a case by case basis (and also choose which export license we want to apply). 3. Functional groupings make things a bit more readable. Struct paravirt_ops is now only used as a template to generate patch-site identifiers, and to extract function pointers for inserting into jmp/calls when patching. It is only instantiated when needed. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Cc: Zach Amsden <zach@vmware.com> Cc: Avi Kivity <avi@qumranet.com> Cc: Anthony Liguory <aliguori@us.ibm.com> Cc: "Glauber de Oliveira Costa" <glommer@gmail.com> Cc: Jun Nakajima <jun.nakajima@intel.com>
* Merge branch 'upstream' of ↵Linus Torvalds2007-10-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (119 commits) [libata] struct pci_dev related cleanups libata: use ata_exec_internal() for PMP register access libata: implement ATA_PFLAG_RESETTING libata: add @timeout to ata_exec_internal[_sg]() ahci: fix notification handling ahci: clean up PORT_IRQ_BAD_PMP enabling ahci: kill leftover from enabling NCQ over PMP libata: wrap schedule_timeout_uninterruptible() in loop libata: skip suppress reporting if ATA_EHI_QUIET libata: clear ehi description after initial host report pata_jmicron: match vendor and class code only libata: add ST9160821AS / 3.ALD to NCQ blacklist pata_acpi: ACPI driver support libata-core: Expose gtm methods for driver use libata: add HDT722516DLA380 to NCQ blacklist libata: blacklist NCQ on Seagate Barracuda ST380817AS [libata] Turn on ACPI by default libata_scsi: Fix ATAPI transfer lengths libata: correct handling of SRST reset sequences libata: Integrate ACPI-based PATA/SATA hotplug - version 5 ...
| * [libata] struct pci_dev related cleanupsJeff Garzik2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * remove pointless pci_dev_to_dev() wrapper. Just directly reference the embedded struct device like everyone else does. * pata_cs5520: delete cs5520_remove_one(), it was a duplicate of ata_pci_remove_one() * linux/libata.h: don't bother including linux/pci.h, we don't need it. Simply declare 'struct pci_dev' and assume interested parties will include the header, as they should be doing anyway. * linux/libata.h: consolidate all CONFIG_PCI declarations into a single location in the header. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: use ata_exec_internal() for PMP register accessTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PMP registers used to be accessed with dedicated accessors ->pmp_read and ->pmp_write. During reset, those callbacks are called with the port frozen so they should be able to run without depending on interrupt delivery. To achieve this, they were implemented polling. However, as resetting the host port makes the PMP to isolate fan-out ports until SError.X is cleared, resetting fan-out ports while port is frozen doesn't buy much additional safety. This patch updates libata PMP support such that PMP registers are accessed using regular ata_exec_internal() mechanism and kills ->pmp_read/write() callbacks. The following changes are made. * PMP access helpers - sata_pmp_read_init_tf(), sata_pmp_read_val(), sata_pmp_write_init_tf() are folded into sata_pmp_read/write() which are now standalone PMP register access functions. * sata_pmp_read/write() returns err_mask instead of rc. This is consistent with other functions which issue internal commands and allows more detailed error reporting. * ahci interrupt handler is modified to ignore BAD_PMP and spurious/illegal completion IRQs while reset is in progress. These conditions are expected during reset. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: implement ATA_PFLAG_RESETTINGTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | Implement ATA_PFLAG_RESETTING. This flag is set while reset is in progress. It's set before prereset is called and cleared after reset fails or postreset is finished. This flag itself doesn't have any function. It will be used by LLDs to tell whether reset is in progress if it needs to behave differently during reset. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: add @timeout to ata_exec_internal[_sg]()Tejun Heo2007-10-12
| | | | | | | | | | | | | | | | Add @timeout argument to ata_exec_internal[_sg](). If 0, default timeout ata_probe_timeout is used. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: fix notification handlingTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | Asynchronous notification on ICH9 didn't work because it didn't write AN FIS into the RX area - it only updates SNotification. Also, snooping SDB_FIS RX area is racy against further SDB FIS receptions. Let sata_async_notification() determine using SNTF if it's available and snoop RX area iff SNTF isn't available Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: clean up PORT_IRQ_BAD_PMP enablingTejun Heo2007-10-12
| | | | | | | | | | | | | | | | Now that we have pp->intr_mask, move PORT_IRQ_BAD_PMP enabling to ahci_pmp_attach/detach() where it belongs. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: kill leftover from enabling NCQ over PMPTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | ahci had problems with NCQ over PMP and NCQ used to be disabled while PMP was attached. After fixing the problem, the temporary NCQ disabling code wasn't removed completely. Kill the remaining piece. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: wrap schedule_timeout_uninterruptible() in loopTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | Tasks in uninterruptible sleep might be woken up by unrelated events and should check whether the condition it was waiting for has actually triggered. Wrap schedule_timeout_uninterruptible() in loop to achieve it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: skip suppress reporting if ATA_EHI_QUIETTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ATA_EHI_NO_AUTOPSY and ATA_EHI_QUIET are used during initial probing to skip exception analysis and reporting. Usually, there's nothing to report but on some allowed but rare corner cases (e.g. phy status changed interrupt when IRQ is enabled on frozen port - this happens if IRQ pending status isn't cleared in the IRQ router or controller) exception messages get printed. Skip reporting if ATA_EHI_QUIET is set. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: clear ehi description after initial host reportTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | ehi description field is used to carry LLD specific controller description. Sometimes, it's used without clearing before and LLD description gets printed with exception information one more time. Clear after printing. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * pata_jmicron: match vendor and class code onlyTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | PATA part of all current JMB controllers behave the same way and JMicron confirms that all future ones will stay compatible. Drop device matching and match only vendor and class. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Ethan Hsiao <ethanhsiao@jmicron.com> Cc: Justin Tsai <justin@jmicron.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: add ST9160821AS / 3.ALD to NCQ blacklistTejun Heo2007-10-12
| | | | | | | | | | | | | | ST9160821AS / 3.ALD also does spurious NCQ completions. Disable NCQ. Signed-off-by: Tejun Heo <teheo@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * pata_acpi: ACPI driver supportAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On a cable there may be eighty wires or perhaps forty and we learn about its type In the world of ACPI So we call the GTM And we find the the timing rate And we look through it to see If eighty wire it must be Timing lives in ACPI routines ACPI routines, ACPI routines Timing lives in ACPI routines ACPI routes ACPI routines And the drivers last you see Picking up unknown pci ids and the code begins to work Timing lives in ACPI routines ACPI routines, ACPI routines Timing lives in ACPI routines ACPI routes ACPI routines [Full speed ahead, Mr Hacker, full speed ahead] Full speed over here sir! Checking Cable, checking cable Aye aye, 80 wire, Heaven heaven] If we use ACPI (ACPI) Every box (every box) has all we need (has all we need) Cable type (cable type) and mode timing (mode timing) In our ATA (in our ATA) subroutines (subroutines, ha ha) Timing lives in ACPI routines ACPI routines, ACPI routines Timing lives in ACPI routines ACPI routes ACPI routines Timing lives in ACPI routines ACPI routines, ACPI routines Timing lives in ACPI routines ACPI routes ACPI routines Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-core: Expose gtm methods for driver useAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | | | Talk to the dark side our driver has to, yes. Much misleading is the data. Store it in a structure we do so that it may be parsed. Signed-off-by: Alan Cox <alan@redhat.com> -- Whats small, old and shouts phrases out of order across mountains ? Yodla.. Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: add HDT722516DLA380 to NCQ blacklistTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | HDT722516DLA380 does spurious completion of NCQ commands. Blacklist it. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Frans Pop <elendil@planet.nl> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: blacklist NCQ on Seagate Barracuda ST380817ASPaolo Ornati2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Seagate Barracuda ST380817AS has troubles with NCQ. For example, unpacking a tarball on an XFS filesystem gives this: ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen ata1.00: cmd 61/40:00:29:a3:98/00:00:00:00:00/40 tag 0 cdb 0x0 data 32768 out res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) More info here: http://lkml.org/lkml/2007/1/21/76 Blacklist it! Signed-off-by: Paolo Ornati <ornati@fastwebnet.it> Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * [libata] Turn on ACPI by defaultJeff Garzik2007-10-12
| | | | | | | | | | | | Let's see what explodes. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata_scsi: Fix ATAPI transfer lengthsAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | Some controller variants snoop the ATAPI length value for Packet transfers to do state machine and FIFO management. Thus we want to set it properly, even for cases where it is otherwise meaningless. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: correct handling of SRST reset sequencesAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct handling of SRST reset sequences. After an SRST it is undefined whether the drive has gone back to PIO0. In order to talk safely we should talk slowly and carefully until we know. Thus when we do the reset if the controller has a pio setup method we call it to flip back to PIO 0 and a known state. After the reset completes the identify will then be done at the safe speed and the drive/controller will pick suitable faster modes and reconfigure the controller to these timings. As a side effect it means we force the controller to PIO 0 as we bring it up which fixes funnies on a few systems where the BIOS firmware leaves us in an interesting choice of modes, or embedded boxes with no firmware which come up in random states. For smart controllers there is nothing to do - they know about this internally. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: Integrate ACPI-based PATA/SATA hotplug - version 5Matthew Garrett2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Modern laptops with hotswap bays still tend to utilise a PATA interface on a SATA bridge, generally with the host controller in some legacy emulation mode rather than AHCI. This means that the existing hotplug code in libata is unable to work. The ACPI specification states that these devices can send notifications when hotswapped, which avoids the need to obtain notification from the controller. This patch uses the existing libata-acpi code and simply registers a notification in order to trigger a rescan whenever the firmware signals an event. Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: Add a drivers/ide style DMA disableAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is useful when debugging, handling problem systems, or for distributions just to get the system installed so it can be sorted out later. This is a bit smarter than the old IDE one and lets you do libata.dma=0 Disable all PATA DMA like old IDE libata.dma=1 Disk DMA only libata.dma=2 ATAPI DMA only libata.dma=4 CF DMA only (or combinations thereof - 0,1,3 being the useful ones I suspect) (I've split CF as it seems to be a seperate case of pain and suffering different to the others and caused by assorted PIO wired adapters etc) Signed-off-by: Alan Cox <alan@redhat.com> [edited to work on SATA too, changing name from 'pata_dma' to 'dma'] Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: Add MCP79 support to AHCI driverPeer Chen2007-10-12
| | | | | | | | | | Signed-off-by: Peer Chen <peerchen@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: add human-readable error value decodingRobert Hancock2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds human-readable decoding of the ATA status and error registers (similar to what drivers/ide does) as well as the SATA Serror register to libata error handling output. This prevents the need to pore through standards documents to figure out the meaning of the bits in these registers when looking at error reports. Some bits that drivers/ide decoded are not decoded here, since the bits are either command-dependent or obsolete, and properly parsing them would add too much complexity. Signed-off-by: Robert Hancock <hancockr@shaw.ca> [edited slightly to make output a bit more symmetric] Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: implement AHCI_HFLAG_NO_PMPTejun Heo2007-10-12
| | | | | | | | | | | | | | Of course some controllers lie about PMP support. Black list them. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: move host flags over to pi.private_dataTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | Private pi.flags area is full and we need more private flags. Move host private flags over to pi.private_data. During initialization, these flags are copied to hpriv->flags. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: implement PMP supportTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | Implement AHCI PMP support. ahci only supports command based switching. Also, for some reason, NCQ over PMP doesn't work now. Other than that, everything works. Tested on ICH9R, JMB360/363 + SIMG3726, 4726 and 5744. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Forrest Zhao <forrest.zhao@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * sata_sil24: implement PORT_RSTTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | As DEV_RST (hardreset) sometimes fail to recover the controller (especially after PMP DMA CS errata). In such cases, perform PORT_RST prior to DEV_RST. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * sata_sil24: implement PMP supportTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement PMP support. sil24 supports full FIS-switching. However, it has a PMP DMA CS errata which requires port-wide resetting if commands are outstanding to three or more devices when an error occurs on one of them. ATAPI commands often result in CHECK SENSE and it's crucial to not reset them before fetching sense data. Unfortunately, ATAPI CHECK SENSE causes a lot of problem if command is outstanding to any other device usually resulting in port-wide reset. So, sata_sil24 implements sil24_qc_defer() which guarantees ATAPI command is run by itself. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-pmp: implement qc_defer for command switching PMP supportTejun Heo2007-10-12
| | | | | | | | | | | | | | | | Implement sata_pmp_qc_defer_cmd_switch() - standard qc_defer for command switching PMP support. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-pmp: extend ACPI support to cover PMPTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | Extend ata_acpi_associate_sata_port() such that it can handle PMP and call it when PMP is attached and detached. Build breakage when !CONFIG_ATA_ACPI was spotted and fixed by Petr Vandrovec. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-pmp: hook PMP support and enable itTejun Heo2007-10-12
| | | | | | | | | | | | | | | | Hook PMP support into libata and enable it. Connect SCR and probing functions, and update ata_dev_classify() to detect PMP. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-pmp: implement Port Multiplier supportTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement Port Multiplier support. To support PMP, a LLDD has to supply ops->pmp_read() and pmp_write(). If non-null, ->pmp_attach and ->pmp_detach are called on PMP attach and detach, respectively. ->pmp_read/write() can be called while the port is frozen, so they must be implemented by polling. This patch supplies several helpers to ease ->pmp_read/write() implementation. Also, irq_handler and error_handler must be PMP aware. Most of PMP aware EH can be done by calling ata_pmp_do_eh() with appropriate methods. PMP EH uses separate set of reset methods and this patch implements standard prereset, hardreset and postreset methods. This patch only implements PMP support. The next patch will integrate PMP into the reset of libata and thus enable PMP support. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-pmp: update ata_eh_reset() for PMPTejun Heo2007-10-12
| | | | | | | | | | | | | | | | | | | | | | PMP always requires SRST to be enabled. Also, hardreset reports classification code from the first device when PMP is attached, not from the PMP. Update ata_eh_reset() such that followup softreset is performed if the controller is PMP capable and the host link is being reset. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * [PATCH] libata: Fix HPA handling regressionAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | Restore the support for handling drives that report one sector too many (ie SCSI not ATA style). This worked before the HPA update but was removed in that process. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * [libata] ata_piix: add HP compaq laptop to short cable listJeff Garzik2007-10-12
| | | | | | | | | | | | Reported by Andreas Messer. Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * pata_ns87415: Initial cut at 87415/87560 IDE supportAlan Cox2007-10-12
| | | | | | | | | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> [plus SuperIO fixes by Kyle McMartin] [plus a cleanup from me] Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata-core: blacklist HITACHI HDS drives using wildcard blacklist matchingDavid Milburn2007-10-12
| | | | | | | | | | | | | | | | | | Blacklist HITACHI HDS7250SASUN500G and HITACHI HDS7225SBSUN250G drives using wildcard matching. Signed-off-by David Milburn <dmilburn@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: update spurious NCQ completion blacklistTejun Heo2007-10-12
| | | | | | | | | | | | | | | | * The firmware version of ST3160812AS is "3.ADJ" no "3.AD". * Add several entries from various sources. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * libata: correct kernel parameter in documentation.Dave Jones2007-10-12
| | | | | | | | | | | | | | 'noacpi' isn't a standalone parameter, give it its prefix. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * pata_pdc202xx_old MWDMA fixes, and notesAlan Cox2007-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I've been doing an audit of this driver to try and find out why we have problems with some Clevo boxes that use it. Didn't get anywhere other than to discover all the bug reporters I have use vmware, which may or may not be chance. In the process however I did find out our MWDMA2 performance was a bit low and code review showed the MWDMA0/2 timings are reversed due to a thinko in the table ordering Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * pata_atiixp: Audit notes on lockingAlan Cox2007-10-12
| | | | | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * [libata] AHCI: enable AHCI mode, before using AHCI resetJeff Garzik2007-10-12
| | | | | | | | | | | | | | | | | | AHCI spec says host-reset bit may only be set when the ahci-enable bit is also set. Noticed by Peer Chen <peerchen@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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