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* Only add the backlight device if it actually exists in OF.jhibbits2013-08-312-0/+4
| | | | MFC after: 1 week
* Fixes for DTrace on PowerPC:jhibbits2013-08-313-112/+261
| | | | | | - Implement dtrace_getarg() - Sync fbt with x86, and fix a typo. - Pull in the time synchronization code from amd64.
* Implement pmap_advise().alc2013-08-311-1/+82
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* Fix bug introduced in rewrite of keg_free_slab in -r251894.mckusick2013-08-311-1/+1
| | | | | | | | | | | | | | | The consequence of the bug is that fini calls are not done when a slab is freed by a call-back from the page daemon. It went unnoticed for two months because fini is little used. I spotted the bug while reading the code to learn how it works so I could write it up for the next edition of the Design and Implementation of FreeBSD book. No MFC needed as this code exists only in HEAD. Reviewed by: kib, jeff Tested by: pho
* Implement _Unwind_GetIP and _Unwind_GetIPInfo as functions as that is whatandrew2013-08-312-0/+21
| | | | we expect on FreeBSD. The implementation is based on the existing macros.
* Bring in gcc r128087 to add support for _Unwind_Backtrace on ARM. This isandrew2013-08-313-1/+69
| | | | prior to the licence change so is under the GPLv2.
* Don't use _Unwind_Backtrace() on ARM as it's currently missing from our ↵theraven2013-08-311-0/+2
| | | | libgcc_s. andrew@ has patches to add it, so this can be reverted and sync'd with upstream later.
* Unconditionally compile the __sync_* atomics support functions into compiler-rttheraven2013-08-312-12/+64
| | | | | | | | | for ARM. This is quite ugly, because it has to work around a clang bug that does not allow built-in functions to be defined, even when they're ones that are expected to be built as part of a library. Reviewed by: ed
* Fix a typo in a comment.rpaulo2013-08-311-1/+1
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* Sync USB bluetooth product list with Linux.hselasky2013-08-312-0/+62
| | | | MFC after: 1 week
* - Set proper KERNLOADADDRgonzo2013-08-311-0/+3
| | | | - Add bpf(4) required by dhclient
* YAMON is 32-bit application and uses 32-bit pointers to pass kernelgonzo2013-08-311-4/+9
| | | | | arguments and environment names/values. Cast values to proper pointer type to make MALTA kernel 64-bit compatible
* sh: Simplify list() in the parser.jilles2013-08-301-21/+22
| | | | | | The erflag argument was only used by old-style (``) command substitutions. We can remove it and handle the special case in the command substitution code.
* Add device PicoStation M2HP support.hiren2013-08-302-0/+171
| | | | | | | | | | | | | | | | This is a nice small outdoor/indoor AP from Ubiquity Networks. The device has: AR7241 CPU SoC AR9287 Wifi 8MB flash 32MB RAM wifi has been tested to work along with leds. Submitted by: loos Approved by: sbruno (mentor, implicit) Tested by: hiren
* sh: Separate out nbinary allocation into a function.jilles2013-08-301-21/+22
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* Add bpf(4) to config file to get dhclient workinggonzo2013-08-301-0/+1
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* Add PCI bus space implementation that converts all 2 and 4 bytesgonzo2013-08-304-4/+448
| | | | values to/from little endian according to PCI spec.
* mdoc: add missing El.joel2013-08-301-0/+1
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* sh: Use makename() where possible.jilles2013-08-301-22/+5
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* Give the page allocations initiated by the swap-backed md(4) a higherkib2013-08-301-1/+1
| | | | | | | | priority. If the write is requested by a system daemon, sleeping there would starve resources and cause deadlock. Reported and tested by: pho Sponsored by: The FreeBSD Foundation
* The pm_save should be cleared on the pmap initialization, and not onkib2013-08-301-1/+1
| | | | | | the activation. Noted by: alc
* Style cleanups.pjd2013-08-301-140/+147
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* acpi_thermal: Warn about insane _TMP temperature only oncedumbbell2013-08-301-5/+26
| | | | | | | A warning is emitted again if the temperature became briefly valid meanwhile. This avoids spamming the user when the sensor is broken. Other values (ie. not _TMP) always raise a warning.
* Pull in r189672 from upstream llvm trunk:dim2013-08-301-10/+15
| | | | | | | | | | | | | | InstCombine: Check for zero shift amounts before subtracting one causing integer overflow. PR17026. Also avoid undefined shifts and shift amounts larger than 64 bits (those are always undef because we can't represent integer types that large). This should fix assertion failures when building the emulators/xmame port. Reported by: bapt
* A final test with unmodified code has shown that a delay of 150msmarcel2013-08-301-1/+1
| | | | | | | | | | | | | | is not giving us a 100% success rate. Bump the delay to 200ms as that seems to do the trick. Note that during testing the delay was added to uart_bus_attach() in uart_core.c. While having the delay in a different place can change the behaviour, it was not expected. Having to bump the delay with another 50ms could therefore be an indication that the problem can not be solved with delays. Reported by: kevlo@ Tested by: kevlo@
* sh: Add a function for the case where one token is required in the parse.jilles2013-08-301-31/+23
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* sh: Recognize "--" as end of options in type builtin.jilles2013-08-302-0/+5
| | | | | This implementation makes minimal changes: command names starting with "-" (other than "--") can still be queried normally.
* The round of expand_number() cleanups.pluknet2013-08-301-29/+10
| | | | | | | | | o Fix range error checking to detect overflow when uint64_t < uintmax_t. o Remove a non-functional check for no valid digits as pointed out by Bruce. o Remove a rather pointless comment describing what the function does. o Clean up a bunch of style bugs. Brucified by: bde
* sh: Cast -1 to pointer rather than pointer to variable of wrong type.jilles2013-08-302-5/+3
| | | | | | | | | | NEOF needs to be a non-null pointer distinct from valid union node pointers. It is not dereferenced. The new NEOF is much like SIG_ERR except that it is an object pointer instead of a function pointer. The variable tokpushback can now be static.
* Simplify pause_sbt() logic. Don't call DELAY() if remainder is lesshselasky2013-08-301-7/+7
| | | | than or equal to zero.
* Typo in strtol(3).pluknet2013-08-301-1/+1
| | | | Noticed by: bde
* Implement support for the process-context identifiers ('PCID') onkib2013-08-3010-113/+527
| | | | | | | | | | | | | | | | | | | | | | | Intel CPUs. The feature tags TLB entries with the Id of the address space and allows to avoid TLB invalidation on the context switch, it is available only in the long mode. In the microbenchmarks, using the PCID decreased latency of the context switches by ~30% on SandyBridge class desktop CPUs, measured with the lat_ctx program from lmbench. If available, use INVPCID instruction when a TLB entry in non-current address space needs to be invalidated. The instruction is typically available on the Haswell. If needed, the use of PCID can be turned off with the vm.pmap.pcid_enabled loader tunable set to 0. The state of the feature is reported by the vm.pmap.pcid_enabled sysctl. The sysctl vm.pmap.pcid_save_cnt reports the number of context switches which avoided invalidating the TLB; compare with the total number of context switches, available as sysctl vm.stats.sys.v_swtch. Sponsored by: The FreeBSD Foundation Reviewed by: alc Tested by: pho, bf
* Add BIT_AND_ATOMIC() and CPU_AND_ATOMIC().kib2013-08-302-1/+9
| | | | | | Sponsored by: The FreeBSD Foundation Reviewed by: alc Tested by: pho, bf
* Provide a wrapper for the INVPCID instruction, definition of thekib2013-08-301-0/+20
| | | | | | | | descriptor and symbolic names for the operation types. Sponsored by: The FreeBSD Foundation Reviewed by: alc Tested by: pho, bf
* Move the definition of the struct unrhdr into a separate header file,kib2013-08-303-27/+70
| | | | | | | | to allow embedding the struct. Add init_unrhdr(9) initializer, which sets up preallocated unrhdr. Reviewed by: alc Tested by: pho, bf
* Reduce WARNS to 0 for dig, host, and nslookup to make themerwin2013-08-303-3/+3
| | | | | | | | | compile with the optional WITH_BIND_SIGCHASE. Submitted by: Andre Albsmeier <Andre.Albsmeier@siemens.com> Approved by: delphij (mentor, implicit) MFC after: 3 days Sponsored by: DK Hostmaster A/S
* Few more minor if_vmx tweaksbryanv2013-08-303-25/+92
| | | | | | | - Allow the Rx/Tx queue sizes to be configured by tunables - Bail out earlier if the Tx queue unlikely has enough free descriptors to hold the frame - Cleanup some of the offloading capabilities handling
* Fix the sysctl that displays whether buffer packing is enablednp2013-08-301-7/+13
| | | | or not.
* If reading a virtual-device value fails, attempt to read a virtual-device-extcperciva2013-08-301-0/+3
| | | | | | | | | | | value. Some hosts do not publish "extended" disk IDs via virtual-device in an attempt to avoid confusing old blkfront drivers, and without this change we failed to attach such disks. In particular, this commit allows all 24 ephemeral disks on EC2 hs1.8xlarge instances to be used, instead of only the first 15. MFC after: 3 days
* Implement support for rx buffer packing. Enable it by default for T5np2013-08-302-142/+601
| | | | | | | | | | | | | | | | cards. This is a T4 and T5 chip feature which lets the chip deliver multiple Ethernet frames in a single buffer. This is more efficient within the chip, in the driver, and reduces wastage of space in rx buffers. - Always allocate rx buffers from the jumbop zone, no matter what the MTU is. Do not use the normal cluster refcounting mechanism. - Reserve space for an mbuf and a refcount in the cluster itself and let the chip DMA multiple frames in the rest. - Use the embedded mbuf for the first frame and allocate mbufs on the fly for any additional frames delivered in the cluster. Each of these mbufs has a reference on the underlying cluster.
* - Fix LOCAL_MTREE so it properly handles multiple files and quotesbdrewery2013-08-301-3/+3
| | | | | | | | | | its value into submakes PR: conf/179466 Submitted by: Garrett Cooper <yaneurabeya@gmail.com> Approved by: bapt MFC after: 2 weeks Sponsored by: EMC / Isilon Storage Division
* Add a routine for attaching an mbuf to a buffer with an externalnp2013-08-291-0/+22
| | | | | | refcount. This one is willing to work with buffers that may already be referenced. MEXTADD/m_extadd are suitable only for the first attachment to a cluster -- they initialize the refcount to 1.
* Introduce a new, HVM compatible, paravirtualized timer driver for Xen.gibbs2013-08-298-642/+615
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use this new driver for both PV and HVM instances. This driver requires a Xen hypervisor that supports vector callbacks, VCPUOP hypercalls, and reports that it has a "safe PV clock". New timer driver: Submitted by: will Sponsored by: Spectra Logic Corporation PV port to new driver, and bug fixes: Submitted by: Roger Pau Monné Sponsored by: Citrix Systems R&D sys/dev/xen/timer/timer.c: - Register a PV timer device driver which (currently) implements device_{identify,probe,attach} and stubs device_detach. The detach routine requires functionality not provided by timecounters(4). The suspend and resume routines need additional work (due to Xen requiring that the hypercalls be executed on the target VCPU), and aren't needed for our purposes. - Make sure there can only be one device instance of this driver, and that it only registers one eventtimers(4) and one timecounters(4) device interface. Make both interfaces use PCPU data as needed. - Match, with a few style cleanups & API differences, the Xen versions of the "fetch time" functions. - Document the magic scale_delta() better for the i386 version. - When registering the event timer, bind a separate event channel for the timer VIRQ to the device's event timer interrupt handler for each active VCPU. Describe each interrupt as "xen_et:c%d", so they can be identified per CPU in "vmstat -i" or "show intrcnt" in KDB. - When scheduling a timer into the hypervisor, try up to 60 times if the hypervisor rejects the time as being in the past. In the common case, this retry shouldn't happen, and if it does, it should only happen once. This is because the event timer advertises a minimum period of 100usec, which is only less than the usual hypercall round trip time about 1 out of every 100 tries. (Unlike other similar drivers, this one actually checks whether the hypervisor accepted the singleshot timer set hypercall.) - Implement a RTC PV clock based on the hypervisor wallclock. sys/conf/files: - Add dev/xen/timer/timer.c if the kernel configuration includes either the XEN or XENHVM options. sys/conf/files.i386: sys/i386/include/xen/xen_clock_util.h: sys/i386/xen/clock.c: sys/i386/xen/xen_clock_util.c: sys/i386/xen/mp_machdep.c: sys/i386/xen/xen_rtc.c: - Remove previous PV timer used in i386 XEN PV kernels, the new timer introduced in this change is used instead (so we share the same code between PVHVM and PV). MFC after: 2 weeks
* 'u_long' is consistently spelled 'unsigned long' in this file. Fix it.jkim2013-08-291-1/+1
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* Partially revert r254880. The bitmap operations actually use long type now.jkim2013-08-293-8/+5
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* Bump up the default timeouts for move commands in the ch(4) driverken2013-08-291-4/+4
| | | | | | | | | | to 15 minutes, and 5 minutes for things like READ ELEMENT STATUS. This is needed to account for the worst case scenarios on at least some Spectra Logic tape libraries. Sponsored by: Spectra Logic MFC after: 3 days
* Fix the incomplete conversion from atomic_t to long for test_bit().jkim2013-08-291-1/+1
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* Clarify confusions between atomic_t and bitmap. Fix bitmap operationsjkim2013-08-292-13/+19
| | | | accordingly.
* Implement vector callback for PVHVM and unify event channel implementationsgibbs2013-08-2964-2654/+2433
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-structure Xen HVM support so that: - Xen is detected and hypercalls can be performed very early in system startup. - Xen interrupt services are implemented using FreeBSD's native interrupt delivery infrastructure. - the Xen interrupt service implementation is shared between PV and HVM guests. - Xen interrupt handlers can optionally use a filter handler in order to avoid the overhead of dispatch to an interrupt thread. - interrupt load can be distributed among all available CPUs. - the overhead of accessing the emulated local and I/O apics on HVM is removed for event channel port events. - a similar optimization can eventually, and fairly easily, be used to optimize MSI. Early Xen detection, HVM refactoring, PVHVM interrupt infrastructure, and misc Xen cleanups: Sponsored by: Spectra Logic Corporation Unification of PV & HVM interrupt infrastructure, bug fixes, and misc Xen cleanups: Submitted by: Roger Pau Monné Sponsored by: Citrix Systems R&D sys/x86/x86/local_apic.c: sys/amd64/include/apicvar.h: sys/i386/include/apicvar.h: sys/amd64/amd64/apic_vector.S: sys/i386/i386/apic_vector.s: sys/amd64/amd64/machdep.c: sys/i386/i386/machdep.c: sys/i386/xen/exception.s: sys/x86/include/segments.h: Reserve IDT vector 0x93 for the Xen event channel upcall interrupt handler. On Hypervisors that support the direct vector callback feature, we can request that this vector be called directly by an injected HVM interrupt event, instead of a simulated PCI interrupt on the Xen platform PCI device. This avoids all of the overhead of dealing with the emulated I/O APIC and local APIC. It also means that the Hypervisor can inject these events on any CPU, allowing upcalls for different ports to be handled in parallel. sys/amd64/amd64/mp_machdep.c: sys/i386/i386/mp_machdep.c: Map Xen per-vcpu area during AP startup. sys/amd64/include/intr_machdep.h: sys/i386/include/intr_machdep.h: Increase the FreeBSD IRQ vector table to include space for event channel interrupt sources. sys/amd64/include/pcpu.h: sys/i386/include/pcpu.h: Remove Xen HVM per-cpu variable data. These fields are now allocated via the dynamic per-cpu scheme. See xen_intr.c for details. sys/amd64/include/xen/hypercall.h: sys/dev/xen/blkback/blkback.c: sys/i386/include/xen/xenvar.h: sys/i386/xen/clock.c: sys/i386/xen/xen_machdep.c: sys/xen/gnttab.c: Prefer FreeBSD primatives to Linux ones in Xen support code. sys/amd64/include/xen/xen-os.h: sys/i386/include/xen/xen-os.h: sys/xen/xen-os.h: sys/dev/xen/balloon/balloon.c: sys/dev/xen/blkback/blkback.c: sys/dev/xen/blkfront/blkfront.c: sys/dev/xen/console/xencons_ring.c: sys/dev/xen/control/control.c: sys/dev/xen/netback/netback.c: sys/dev/xen/netfront/netfront.c: sys/dev/xen/xenpci/xenpci.c: sys/i386/i386/machdep.c: sys/i386/include/pmap.h: sys/i386/include/xen/xenfunc.h: sys/i386/isa/npx.c: sys/i386/xen/clock.c: sys/i386/xen/mp_machdep.c: sys/i386/xen/mptable.c: sys/i386/xen/xen_clock_util.c: sys/i386/xen/xen_machdep.c: sys/i386/xen/xen_rtc.c: sys/xen/evtchn/evtchn_dev.c: sys/xen/features.c: sys/xen/gnttab.c: sys/xen/gnttab.h: sys/xen/hvm.h: sys/xen/xenbus/xenbus.c: sys/xen/xenbus/xenbus_if.m: sys/xen/xenbus/xenbusb_front.c: sys/xen/xenbus/xenbusvar.h: sys/xen/xenstore/xenstore.c: sys/xen/xenstore/xenstore_dev.c: sys/xen/xenstore/xenstorevar.h: Pull common Xen OS support functions/settings into xen/xen-os.h. sys/amd64/include/xen/xen-os.h: sys/i386/include/xen/xen-os.h: sys/xen/xen-os.h: Remove constants, macros, and functions unused in FreeBSD's Xen support. sys/xen/xen-os.h: sys/i386/xen/xen_machdep.c: sys/x86/xen/hvm.c: Introduce new functions xen_domain(), xen_pv_domain(), and xen_hvm_domain(). These are used in favor of #ifdefs so that FreeBSD can dynamically detect and adapt to the presence of a hypervisor. The goal is to have an HVM optimized GENERIC, but more is necessary before this is possible. sys/amd64/amd64/machdep.c: sys/dev/xen/xenpci/xenpcivar.h: sys/dev/xen/xenpci/xenpci.c: sys/x86/xen/hvm.c: sys/sys/kernel.h: Refactor magic ioport, Hypercall table and Hypervisor shared information page setup, and move it to a dedicated HVM support module. HVM mode initialization is now triggered during the SI_SUB_HYPERVISOR phase of system startup. This currently occurs just after the kernel VM is fully setup which is just enough infrastructure to allow the hypercall table and shared info page to be properly mapped. sys/xen/hvm.h: sys/x86/xen/hvm.c: Add definitions and a method for configuring Hypervisor event delievery via a direct vector callback. sys/amd64/include/xen/xen-os.h: sys/x86/xen/hvm.c: sys/conf/files: sys/conf/files.amd64: sys/conf/files.i386: Adjust kernel build to reflect the refactoring of early Xen startup code and Xen interrupt services. sys/dev/xen/blkback/blkback.c: sys/dev/xen/blkfront/blkfront.c: sys/dev/xen/blkfront/block.h: sys/dev/xen/control/control.c: sys/dev/xen/evtchn/evtchn_dev.c: sys/dev/xen/netback/netback.c: sys/dev/xen/netfront/netfront.c: sys/xen/xenstore/xenstore.c: sys/xen/evtchn/evtchn_dev.c: sys/dev/xen/console/console.c: sys/dev/xen/console/xencons_ring.c Adjust drivers to use new xen_intr_*() API. sys/dev/xen/blkback/blkback.c: Since blkback defers all event handling to a taskqueue, convert this task queue to a "fast" taskqueue, and schedule it via an interrupt filter. This avoids an unnecessary ithread context switch. sys/xen/xenstore/xenstore.c: The xenstore driver is MPSAFE. Indicate as much when registering its interrupt handler. sys/xen/xenbus/xenbus.c: sys/xen/xenbus/xenbusvar.h: Remove unused event channel APIs. sys/xen/evtchn.h: Remove all kernel Xen interrupt service API definitions from this file. It is now only used for structure and ioctl definitions related to the event channel userland device driver. Update the definitions in this file to match those from NetBSD. Implementing this interface will be necessary for Dom0 support. sys/xen/evtchn/evtchnvar.h: Add a header file for implemenation internal APIs related to managing event channels event delivery. This is used to allow, for example, the event channel userland device driver to access low-level routines that typical kernel consumers of event channel services should never access. sys/xen/interface/event_channel.h: sys/xen/xen_intr.h: Standardize on the evtchn_port_t type for referring to an event channel port id. In order to prevent low-level event channel APIs from leaking to kernel consumers who should not have access to this data, the type is defined twice: Once in the Xen provided event_channel.h, and again in xen/xen_intr.h. The double declaration is protected by __XEN_EVTCHN_PORT_DEFINED__ to ensure it is never declared twice within a given compilation unit. sys/xen/xen_intr.h: sys/xen/evtchn/evtchn.c: sys/x86/xen/xen_intr.c: sys/dev/xen/xenpci/evtchn.c: sys/dev/xen/xenpci/xenpcivar.h: New implementation of Xen interrupt services. This is similar in many respects to the i386 PV implementation with the exception that events for bound to event channel ports (i.e. not IPI, virtual IRQ, or physical IRQ) are further optimized to avoid mask/unmask operations that aren't necessary for these edge triggered events. Stubs exist for supporting physical IRQ binding, but will need additional work before this implementation can be fully shared between PV and HVM. sys/amd64/amd64/mp_machdep.c: sys/i386/i386/mp_machdep.c: sys/i386/xen/mp_machdep.c sys/x86/xen/hvm.c: Add support for placing vcpu_info into an arbritary memory page instead of using HYPERVISOR_shared_info->vcpu_info. This allows the creation of domains with more than 32 vcpus. sys/i386/i386/machdep.c: sys/i386/xen/clock.c: sys/i386/xen/xen_machdep.c: sys/i386/xen/exception.s: Add support for new event channle implementation.
* - Remove test_and_set_bit() macro. It is unused since r255037.jkim2013-08-291-5/+3
| | | | | | | | - Relax atomic_read() and atomic_set() macros. Linux does not require any memory barrier. Also, these macros may be even reordered or optimized away according to the API documentation: https://www.kernel.org/doc/Documentation/atomic_ops.txt
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