Commit Graph

94855 Commits

Author SHA1 Message Date
Alexander Motin
27492bea85 Fix the build with CTLFEDEBUG, broken by unmapped I/O support changes. 2013-09-01 10:11:00 +00:00
Bryan Venteicher
8f3600b108 Import multiqueue VirtIO net driver from my user/bryanv/vtnetmq branch
This is a significant rewrite of much of the previous driver; lots of
misc. cleanup was also performed, and support for a few other minor
features was also added.
2013-09-01 04:33:47 +00:00
Bryan Venteicher
cfc28a5bf7 Sync VirtIO net device header file from recent Linux 2013-09-01 04:23:54 +00:00
Bryan Venteicher
49a4385d69 Add optional VirtIO device method for post-attach notifications
This is called after the parent device (ie virito_pci) has
completed the device attachment/initialization.
2013-09-01 04:20:23 +00:00
Bryan Venteicher
b619f40aec Add support for postponing VirtIO virtqueue interrupts
Partial support for the EVENT_IDX feature was added a while ago,
but this commit adds an interface for the device driver to hint
how long (in terms of descriptors) the next interrupt should be
delayed.

The first user of this will be used to reduce VirtIO net's Tx
completion interrupts.
2013-09-01 04:16:43 +00:00
Konstantin Belousov
f27d53b8f2 Fix two build failures for non-tb configurations, UP [2] and when using gas [1].
Reported by:	andreast [1], bf [2]
Sponsored by:	The FreeBSD Foundation
2013-08-31 19:13:21 +00:00
Justin Hibbits
427467b32e Only add the backlight device if it actually exists in OF.
MFC after:	1 week
2013-08-31 16:31:48 +00:00
Justin Hibbits
f0bd82a11b Fixes for DTrace on PowerPC:
- Implement dtrace_getarg()
- Sync fbt with x86, and fix a typo.
- Pull in the time synchronization code from amd64.
2013-08-31 16:30:20 +00:00
Alan Cox
f00154a765 Implement pmap_advise(). 2013-08-31 16:21:13 +00:00
Kirk McKusick
1645995b97 Fix bug introduced in rewrite of keg_free_slab in -r251894.
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
2013-08-31 15:40:15 +00:00
Mark Murray
f43c467a4f MFC 2013-08-31 13:41:20 +00:00
David Chisnall
e1c0c6422a Unconditionally compile the __sync_* atomics support functions into compiler-rt
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
2013-08-31 08:50:45 +00:00
Rui Paulo
c2b340cb73 Fix a typo in a comment. 2013-08-31 07:08:21 +00:00
Hans Petter Selasky
33f4aa115d Sync USB bluetooth product list with Linux.
MFC after:	1 week
2013-08-31 06:47:53 +00:00
Oleksandr Tymoshenko
990dc2acfb - Set proper KERNLOADADDR
- Add bpf(4) required by dhclient
2013-08-31 01:30:01 +00:00
Oleksandr Tymoshenko
8376ffb561 YAMON is 32-bit application and uses 32-bit pointers to pass kernel
arguments and environment names/values. Cast values to proper pointer type
to make MALTA kernel 64-bit compatible
2013-08-31 01:24:05 +00:00
Hiren Panchasara
631f16444a Add device PicoStation M2HP support.
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
2013-08-30 20:46:01 +00:00
Oleksandr Tymoshenko
ba74a6f44f Add bpf(4) to config file to get dhclient working 2013-08-30 20:30:33 +00:00
Oleksandr Tymoshenko
f9719fe14b Add PCI bus space implementation that converts all 2 and 4 bytes
values to/from little endian according to PCI spec.
2013-08-30 20:28:35 +00:00
Konstantin Belousov
1a42d14a80 Give the page allocations initiated by the swap-backed md(4) a higher
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
2013-08-30 20:12:23 +00:00
Konstantin Belousov
1099068118 The pm_save should be cleared on the pmap initialization, and not on
the activation.

Noted by:	alc
2013-08-30 20:10:01 +00:00
Pawel Jakub Dawidek
43688a7845 Style cleanups. 2013-08-30 19:42:25 +00:00
Jean-Sébastien Pédron
b8833944fd acpi_thermal: Warn about insane _TMP temperature only once
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.
2013-08-30 19:21:12 +00:00
Mark Murray
7737ec4198 Remove short-lived idea; thread to harvest (eg) RDRAND enropy into the usual harvest queues. It was a nifty idea, but too heavyweight.
Submitted by:	Arthur Mesh <arthurmesh@gmail.com>
2013-08-30 17:47:53 +00:00
Marcel Moolenaar
40a827b6f0 A final test with unmodified code has shown that a delay of 150ms
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@
2013-08-30 15:26:45 +00:00
Mark Murray
77de2c3f58 Separate out the Software RNG entropy harvesting queue and thread into its own files.
Submitted by:	 Arthur Mesh <arthurmesh@gmail.com>
2013-08-30 11:42:57 +00:00
Mark Murray
f27c28dc6e MFC 2013-08-30 11:38:34 +00:00
Hans Petter Selasky
5a280dbdd6 Simplify pause_sbt() logic. Don't call DELAY() if remainder is less
than or equal to zero.
2013-08-30 10:39:56 +00:00
Konstantin Belousov
37eed8419c Implement support for the process-context identifiers ('PCID') on
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
2013-08-30 07:59:49 +00:00
Konstantin Belousov
a0887a4c2d Add BIT_AND_ATOMIC() and CPU_AND_ATOMIC().
Sponsored by:	The FreeBSD Foundation
Reviewed by:	alc
Tested by:	pho, bf
2013-08-30 07:43:34 +00:00
Konstantin Belousov
5f5703ef52 Provide a wrapper for the INVPCID instruction, definition of the
descriptor and symbolic names for the operation types.

Sponsored by:	The FreeBSD Foundation
Reviewed by:	alc
Tested by:	pho, bf
2013-08-30 07:42:38 +00:00
Konstantin Belousov
dc872d46da Move the definition of the struct unrhdr into a separate header file,
to allow embedding the struct.  Add init_unrhdr(9) initializer, which
sets up preallocated unrhdr.

Reviewed by:	alc
Tested by:	pho, bf
2013-08-30 07:37:45 +00:00
Bryan Venteicher
3c5dfe892d Few more minor if_vmx tweaks
- 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
2013-08-30 05:53:00 +00:00
Navdeep Parhar
32e9219012 Fix the sysctl that displays whether buffer packing is enabled
or not.
2013-08-30 02:13:36 +00:00
Colin Percival
48a1ceed53 If reading a virtual-device value fails, attempt to read a virtual-device-ext
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
2013-08-30 01:46:56 +00:00
Navdeep Parhar
1458bff9a4 Implement support for rx buffer packing. Enable it by default for T5
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.
2013-08-30 01:45:36 +00:00
Navdeep Parhar
ba3a81c904 Add a routine for attaching an mbuf to a buffer with an external
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.
2013-08-29 23:46:38 +00:00
Justin T. Gibbs
9f40021f28 Introduce a new, HVM compatible, paravirtualized timer driver for Xen.
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
2013-08-29 23:11:58 +00:00
Jung-uk Kim
7311dad7ee 'u_long' is consistently spelled 'unsigned long' in this file. Fix it. 2013-08-29 23:09:34 +00:00
Jung-uk Kim
346c9ecee8 Partially revert r254880. The bitmap operations actually use long type now. 2013-08-29 22:46:21 +00:00
Kenneth D. Merry
ee5bd4fc5a Bump up the default timeouts for move commands in the ch(4) driver
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
2013-08-29 21:25:27 +00:00
Jung-uk Kim
33e00c6789 Fix the incomplete conversion from atomic_t to long for test_bit(). 2013-08-29 20:51:12 +00:00
Jung-uk Kim
9dcd4b1293 Clarify confusions between atomic_t and bitmap. Fix bitmap operations
accordingly.
2013-08-29 20:40:45 +00:00
Justin T. Gibbs
76acc41fb7 Implement vector callback for PVHVM and unify event channel implementations
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.
2013-08-29 19:52:18 +00:00
Jung-uk Kim
ea4447500d - Remove test_and_set_bit() macro. It is unused since r255037.
- 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
2013-08-29 19:47:52 +00:00
Adrian Chadd
310915a45a Convert the if_lagg rwlock to an rmlock.
We've been seeing lots of cache line contention (but not lock contention!)
in our workloads between the various TX and RX threads going on.

The write lock is only grabbed when configuration changes are made - which
are infrequent.

With this patch, the contention and cycles spent waiting for updates
disappear.

Sponsored by:	Netflix, Inc.
2013-08-29 19:35:14 +00:00
Jung-uk Kim
0289d87d9c Fix atomic operations on context_flag without altering semantics. 2013-08-29 18:36:47 +00:00
Kenneth D. Merry
880e57b635 Fix some issues in change 254760 pointed out by Bruce Evans:
- Remove excessive parenthesis
 - Use KNF continuation indentation
 - Cut down on excessive continuation lines
 - More consistent style in messages
 - Use uprintf() instead of printf()

Submitted by:	bde
2013-08-29 16:41:40 +00:00
Marcel Moolenaar
4fc4997535 Work-around a timing problem with the ITE IT8513E now that the core
calls ns8250_bus_ipend() almost immediately after ns8250_bus_attach().
As it appears, a line break condition is being signalled for almost
all received characters due to this. A delay of 150ms seems enough
to allow the H/W to settle and to avoid the problem.
More analysis is needed, but for now a regression has been addressed.

Reported by: kevlo@
Tested by: kevlo@
2013-08-29 16:26:04 +00:00
John Baldwin
e289e9f2ca Don't return an error for socket timeouts that are too large. Just
cap them to INT_MAX ticks instead.

PR:		kern/181416 (r254699 really)
Requested by:	bde
MFC after:	2 weeks
2013-08-29 15:59:05 +00:00
Alan Cox
51321f7c31 Significantly reduce the cost, i.e., run time, of calls to madvise(...,
MADV_DONTNEED) and madvise(..., MADV_FREE).  Specifically, introduce a new
pmap function, pmap_advise(), that operates on a range of virtual addresses
within the specified pmap, allowing for a more efficient implementation of
MADV_DONTNEED and MADV_FREE.  Previously, the implementation of
MADV_DONTNEED and MADV_FREE relied on per-page pmap operations, such as
pmap_clear_reference().  Intuitively, the problem with this implementation
is that the pmap-level locks are acquired and released and the page table
traversed repeatedly, once for each resident page in the range
that was specified to madvise(2).  A more subtle flaw with the previous
implementation is that pmap_clear_reference() would clear the reference bit
on all mappings to the specified page, not just the mapping in the range
specified to madvise(2).

Since our malloc(3) makes heavy use of madvise(2), this change can have a
measureable impact.  For example, the system time for completing a parallel
"buildworld" on a 6-core amd64 machine was reduced by about 1.5% to 2.0%.

Note: This change only contains pmap_advise() implementations for a subset
of our supported architectures.  I will commit implementations for the
remaining architectures after further testing.  For now, a stub function is
sufficient because of the advisory nature of pmap_advise().

Discussed with: jeff, jhb, kib
Tested by:      pho (i386), marcel (ia64)
Sponsored by:   EMC / Isilon Storage Division
2013-08-29 15:49:05 +00:00
Adrian Chadd
e733e239ee Migrate iwn(4) to use the new ieee80211_tx_complete() API.
Tested:

* Intel 5100, STA mode
2013-08-29 13:56:44 +00:00
Adrian Chadd
808d6d430f Remove the duplicate LLC_MISS event and put it in the right order. 2013-08-29 13:52:51 +00:00
Luiz Otavio O Souza
973bf10594 Prevent the full restart cycle every time arge_start() is called. Only
(re)start the interface when it is down.  This change fix a race with
BOOTP where the response packet is lost because the interface is being
reset by a netmask change right after send the packet.

PR:		178318
Approved by:	adrian (mentor)
2013-08-29 12:48:12 +00:00
Navdeep Parhar
91d1b03d36 Merge r254736 from user/np/cxl_tuning.
Don't leak tags when M_NOFREE | M_PKTHDR mbufs are freed.

Reviewed by:	andre
2013-08-29 08:07:35 +00:00
Navdeep Parhar
480e603c79 Merge r254386 from user/np/cxl_tuning. Add an INET|INET6 check missing
in said revision.

r254386:
Flush inactive LRO entries periodically.
2013-08-29 06:26:22 +00:00
Jung-uk Kim
8e0caa60f2 Correct atomic operations in i915. 2013-08-28 23:59:38 +00:00
Jung-uk Kim
6ac96a7e7e Fix a compiler warning and add couple of VM map types. 2013-08-28 23:43:28 +00:00
Navdeep Parhar
c93d567412 Whitespace nit. 2013-08-28 23:15:05 +00:00
Navdeep Parhar
7127e6acf0 Merge r254336 from user/np/cxl_tuning.
Add a last-modified timestamp to each LRO entry and provide an interface
to flush all inactive entries.  Drivers decide when to flush and what
the inactivity threshold should be.

Network drivers that process an rx queue to completion can enter a
livelock type situation when the rate at which packets are received
reaches equilibrium with the rate at which the rx thread is processing
them.  When this happens the final LRO flush (normally when the rx
routine is done) does not occur.  Pure ACKs and segments with total
payload < 64K can get stuck in an LRO entry.  Symptoms are that TCP
tx-mostly connections' performance falls off a cliff during heavy,
unrelated rx on the interface.

Flushing only inactive LRO entries works better than any of these
alternates that I tried:
- don't LRO pure ACKs
- flush _all_ LRO entries periodically (every 'x' microseconds or every
  'y' descriptors)
- stop rx processing in the driver periodically and schedule remaining
  work for later.

Reviewed by:	andre
2013-08-28 23:00:34 +00:00
Jung-uk Kim
2d0196c405 Fix a compiler warning. With this fix, a negative time can be converted to
a struct timeval and back to the original nanoseconds correctly.
2013-08-28 22:57:49 +00:00
Kenneth D. Merry
3b5f179d2a Support storing 7 additional file flags in tmpfs:
UF_SYSTEM, UF_SPARSE, UF_OFFLINE, UF_REPARSE, UF_ARCHIVE, UF_READONLY,
and UF_HIDDEN.

Sort the file flags tmpfs supports alphabetically.  tmpfs now
supports the same flags as UFS, with the exception of SF_SNAPSHOT.

Reported by:	bdrewery, antoine
Sponsored by:	Spectra Logic
2013-08-28 22:12:56 +00:00
Navdeep Parhar
319a31ea18 Change t4_list_lock and t4_uld_list_lock from mutexes to sx'es.
- tom_uninit had to be reworked not to hold the adapter lock (a mutex)
  around t4_deactivate_uld, which acquires the uld_list_lock.
- the ifc_match for the interface cloner that creates the tracer ifnet
  had to be reworked as the kernel calls ifc_match with the global
  if_cloners_mtx held.
2013-08-28 20:59:22 +00:00
Navdeep Parhar
9800517691 Add hooks in base cxgbe(4) for the iWARP upper-layer driver. Update a
couple of assertions in the TOE driver as well.
2013-08-28 20:45:45 +00:00
Jung-uk Kim
10f1472e41 Reduce diff against stable/9 slightly. 2013-08-28 20:10:56 +00:00
David C Somayajulu
67ffef6b9e ql_minidump() should be performed only by port 0.
Submitted by: David C Somayajulu
2013-08-28 20:07:00 +00:00
Jung-uk Kim
663593f19f Do not save/restore video memory if we are not using linear frame buffer.
Note this partially revert r233896.
2013-08-28 19:06:22 +00:00
Jung-uk Kim
b1bba126f0 Make sure to free stale buffer before allocating new one for safety. 2013-08-28 18:13:37 +00:00
Jung-uk Kim
7afb475f63 Avoid unnecessary signedness conversion. 2013-08-28 17:58:30 +00:00
Kirk McKusick
2ce451f089 In looking at block layouts as part of fixing filesystem block
allocations under low free-space conditions (-r254995), determine
that old block-preference search order used before -r249782 worked
a bit better. This change reverts to that block-preference search order.

MFC after:	2 weeks
2013-08-28 17:46:32 +00:00
Kirk McKusick
28702816d8 A performance problem was reported in PR kern/181226:
I have 25TB Dell PERC 6 RAID5 array. When it becomes almost
    full (10-20GB free), processes which write data to it start
    eating 100% CPU and write speed drops below 1MB/sec (normally
    to gives 400MB/sec). The revision at which it first became
    apparent was http://svnweb.freebsd.org/changeset/base/249782.

The offending change reserved an area in each cylinder group to
store metadata. The new algorithm attempts to save this area for
metadata and allows its use for non-metadata only after all the
data areas have been exhausted. The size of the reserved area
defaults to half of minfree, so the filesystem reports full before
the data area can completely fill. However, in this report, the
filesystem has had minfree reduced to 1% thus forcing the metadata
area to be used for data. As the filesystem approached full, it
had only metadata areas left to allocate. The result was that
every block allocation had to scan summary data for 30,000 cylinder
groups before falling back to searching up to 30,000 metadata areas.

The fix is to give up on saving the metadata areas once the free
space reserve drops below 2%. The effect of this change is to use
the old algorithm of just accepting the first available block that
we find. Since most filesystems use the default 5% minfree, this
will have no effect on their operation. For those that want to push
to the limit, they will get their crappy block placements quickly.

Submitted by:  Dmitry Sivachenko
Fix Tested by: Dmitry Sivachenko
PR:            kern/181226
MFC after:     2 weeks
2013-08-28 17:38:05 +00:00
George V. Neville-Neil
06e8e46410 Add firmware for Centrino 2200-N wireless devices.
Driver software for this firmware will be updated in a following commit.
2013-08-28 15:12:51 +00:00
Luiz Otavio O Souza
c6905524b4 Fix a few typos for s25fl types.
Approved by:	adrian (mentor)
2013-08-28 14:49:36 +00:00
Luiz Otavio O Souza
b3cb2c4a93 Make ar71xx_spi attach the next free unit of spibus and not only spibus0.
Approved by:	adrian (mentor)
2013-08-28 14:46:15 +00:00
Luiz Otavio O Souza
2557c4beb1 Add the default hints to make the GPIO pins, rf led and reset switch work
out of the box on RouterStation.

PR:	177832
Submitted by:	Petko Bordjukov (bordjukov@gmail.com)
Approved by:	adrian (mentor)
2013-08-28 14:43:04 +00:00
Luiz Otavio O Souza
72405c6be0 Properly free gpiobus ivars when gpiobus_parse_pins() fails and also on
gpiobus detachment.

Suggested by:	imp
Approved by:	adrian (mentor)
2013-08-28 14:39:24 +00:00
Gavin Atkinson
0d9bc65de7 Support the PCI-Express SSD in the new MacBook Air (model A1465)
Submitted by:	Johannes Lundberg <johannes brilliantservice.co.jp>
MFC after:	3 days
2013-08-28 14:29:33 +00:00
Ivan Voras
60dd37465a Take a very small step toward the Century of the Anchovy by increasing the
time dirhash entries stay in memory before being considered for eviction to
1 minute.
2013-08-28 10:06:20 +00:00
Ulrich Spörlein
845e3c1de2 Fix 'make depend' 2013-08-28 07:48:44 +00:00
Oleksandr Tymoshenko
feeabf2125 Fix GT PCI controller driver on big-endian hardware 2013-08-28 01:10:51 +00:00
Xin LI
1c1075ed93 Previously, both zfs_rename and zfs_link does a check on whether
the passed vnode belongs to the same mount point (v_vfsp or also
known as v_mount in FreeBSD).  This check prevents the code from
proceeding further on vnodes that do not belong to ZFS, for
instance, on UFS or NULLFS.

The recent change (merged as r254585) on upstream changes the
check of v_vfsp to instead check the znode's z_zfsvfs.  On Illumos
this would work because when the vnode comes from lofs, the
VOP_REALVP() would give the right vnode, this is not true on
FreeBSD where our VOP_REALVP is a no-op, and as such tdvp is
not guaranteed to be a ZFS vnode, and will later trigger a
failed assertion when verifying the vnode.

This changeset modifies our local shims (zfs_freebsd_rename and
zfs_freebsd_link) to check if v_mount matches before proceeding
further.

Reported by:		many
Diagnostic work by:	avg
2013-08-28 00:39:47 +00:00
David C Somayajulu
e43ab9b98e Fix bug in Flash access code
Submitted by: David C Somayajulu
2013-08-27 21:29:21 +00:00
Andre Oppermann
f729ede69e Pad m_hdr on 32bit architectures to to prevent alignment and padding
problems with the way MLEN, MHLEN, and struct mbuf are set up.

CTASSERT's are provided to detect such issues at compile time in the
future.

The #define MLEN and MHLEN calculation do not take actual compiler-
induced alignment and padding inside the complete struct mbuf into
account.  Accordingly appropriate attention is required when changing
members of struct mbuf.

Ideally one would calculate MLEN as (MSIZE - sizeof(((struct mbuf *)0)->m_hdr)
but that doesn't work as the compiler refuses to operate on an as of
yet incomplete structure.

In particular ARM 32bit has more strict alignment requirements which
caused 4 bytes of padding between m_hdr and pkthdr in struct mbuf
because of the 64bit members in pkthdr.  This wasn't picked up by MLEN
and MHLEN causing an overflow of the mbuf provided data storage by
overestimating its size.

I386 didn't show this problem because it handles unaligned access just
fine, albeit at a small performance penalty.

On 64bit architectures the struct mbuf layout is 64bit aligned in all
places.

Reported by:	Thomas Skibo <ThomasSkibo-at-sbcglobal-dot-net>
Tested by:	tuexen, ian, Thomas Skibo (extended patch)
Sponsored by:	The FreeBSD Foundation
2013-08-27 20:52:02 +00:00
Kenneth D. Merry
73825c1732 If a drive returns ASC/ASCQ 0x04,0x11 "Logical unit not ready,
notify (enable spinup) required", instead of doing the normal
retries, poll for a change in status.

We will poll every half second for a minute for the status to
change.

Hitachi drives (and likely other SAS drives) return that ASC/ASCQ
when they are waiting to spin up.  What it means is that they are
waiting for the SAS expander to send them the SAS
NOTIFY (ENABLE SPINUP) primitive.

That primitive is the mechanism expanders/enclosures use to
sequence drive spinup to avoid overloading power supplies.

Sponsored by:	Spectra Logic
MFC after:	3 days
2013-08-27 19:47:03 +00:00
Colin Percival
d1688fc3f1 Remove duplicate dev.xbd.*.max_requests sysctl added in r252260.
Approved by:	gibbs
2013-08-27 19:10:36 +00:00
Roman Divacky
4d93b060fa Assemble linux32_locore.s and ia32_sigtramp.S with clang integrated assembler.
Support for .code32 and .code64 in llvm was implemented more than 2 years ago.

Tested by:      Dan McGregor <dan.mcgregor at usask dot ca>
2013-08-27 18:35:04 +00:00
Neel Natu
6f6ebf3c3f Add support for emulating the byte move instruction "mov r/m8, r8".
This emulation is required when dumping MMIO space via the ddb "examine"
command.
2013-08-27 16:49:20 +00:00
Alfred Perlstein
29c463d633 Remove include opt_ofed.h since OFED is unifdef'd.
Pointed out by: glebius
2013-08-27 16:45:00 +00:00
Adrian Chadd
e95f34242c Use the new ieee80211_tx_complete() function. 2013-08-27 14:39:37 +00:00
Adrian Chadd
36ee7775f4 Create a new function to complete 802.11 mbuf transmission.
The aim of this function is to eventually be the completion entry point
for all 802.11 encapsulated mbufs.  All the wifi drivers end up doing
what is in this function so it's an easy win to turn it into a net80211
method and abstract out this code.

Ideally the drivers will all eventually be modified to queue up completed
mbufs and call this function with all the driver locks not held.
This will allow for some much more interesting software queue handling
in the future (like net80211 based A-MSDU, fast-frames, A-MPDU aggregation
and retransmission.)

Tested:

* ath(4), iwn(4)
2013-08-27 14:37:13 +00:00
Devin Teske
f8dfdfbf4c Update copyright. 2013-08-27 06:09:28 +00:00
Bryan Venteicher
3c9657753e Couple minor if_vmx tweaks
- Use queue size fields from the Tx/Rx queues in various places
    instead of (currently the same values) from the softc.
  - Fix potential crash in detach if the attached failed to alloc
    queue memory.
  - Move the VMXNET3_MAX_RX_SEGS define to a better spot.
  - Tweak frame size calculation w.r.t. ETHER_ALIGN. This could be
    tweaked some more, or removed since it probably doesn't matter
    much for x86 (and the x86 class of machines this driver will
    be used on).
2013-08-27 04:05:18 +00:00
Oleksandr Tymoshenko
e6353b0005 Fixes for compatibility with QEMU:
- Route PCI interrupt for NIC
- Make "no mapping" warning more user-friendly: add device name and mention
    that it's IRQ mapping
- Do not overlap ICUs' IO window with PCI devices' IO windows by starting
    IO rman at offset 0x100
2013-08-27 01:40:13 +00:00
Konstantin Belousov
1ca79c111c When allocating a pbuf for the cluster write, do not sleep waiting
for the available pbuf when passed vnode is backing md(4). Other i/o
directed to the same md device might already hold pbufs, and then we
could deadlock since only our progress can free a pbuf needed for
wakeup.

Obtained from:	projects/vm6
Reminded and tested by:	pho
MFC after:	1 week
2013-08-27 01:31:12 +00:00
Oleksandr Tymoshenko
c9735f9537 - Initialize freq variable so we will not end up with random value
if there is no YAMON present
2013-08-27 01:08:55 +00:00
Will Andrews
5e9ccc8797 Add the ability to display the default FIB number for a process to the
ps(1) utility, e.g. "ps -O fib".

bin/ps/keyword.c:
	Add the "fib" keyword and default its column name to "FIB".

bin/ps/ps.1:
	Add "fib" as a supported keyword.

sys/compat/freebsd32/freebsd32.h:
sys/kern/kern_proc.c:
sys/sys/user.h:
	Add the default fib number for a process (p->p_fibnum)
	to the user land accessible process data of struct kinfo_proc.

Submitted by:	Oliver Fromme <olli@fromme.com>, gibbs
2013-08-26 23:48:21 +00:00
Devin Teske
e44da61e69 Building upon SVN r254237, disable automated activation of alternate layouts
and add support for default underride to $loader_version, acting as a way to
name a release. Release text is not displayed for the aforementioned feature
of alternate display layout (introduced in r254237); however, for all other
layouts (incl. default), the release name is displayed at lower-right.

See version.4th(8) for additional information and/or historical details.
NOTE: Also a minor edit to version.4th(8) while we're here.
2013-08-26 23:37:11 +00:00
Joerg Wunsch
acb3b5d2fe Reimplement the FDOPT_NOERROR feature that was kicked out in r134081.
It is needed for fdread(1) in order to be able to recover from CRC
errors in the data field of a floppy sector (by returning the sector
data that failed CRC, rather than inventing dummy data).

When closing the device, clear all transient device options.

MFC after:	1 week
2013-08-26 21:15:50 +00:00
Alexander Motin
3843eba85d MFprojects/camlock r254895:
Add unmapped BIO support to GEOM ZERO if kern.geom.zero.clear is cleared.
2013-08-26 20:39:02 +00:00
Mark Murray
111e60c2ad Remove the short-lived namei experiment. 2013-08-26 19:07:03 +00:00
Navdeep Parhar
8a59745fca Use correct mailbox and PCIe PF number when querying RDMA parameters. 2013-08-26 19:02:52 +00:00
John-Mark Gurney
57150ff69b fix up some comments and a white space issue...
MFC after:	3 days
2013-08-26 18:53:19 +00:00
Mark Murray
c495c93567 Snapshot; Do some running repairs on entropy harvesting. More needs to follow. 2013-08-26 18:35:21 +00:00
Mark Murray
f8530155da Snapshot of current work;
1) Clean up namespace; only use "Yarrow" where it is Yarrow-specific
or close enough to the Yarrow algorithm. For the rest use a neutral
name.

2) Tidy up headers; put private stuff in private places. More could
be done here.

3) Streamline the hashing/encryption; no need for a 256-bit counter;
128 bits will last for long enough.

There are bits of debug code lying around; these will be removed
at a later stage.
2013-08-26 18:29:51 +00:00
Mark Murray
a8343c86d2 MFC 2013-08-26 18:21:04 +00:00
John Baldwin
fd77bbb967 Remove most of the remaining sysctl name list macros. They were only
ever intended for use in sysctl(8) and it has not used them for many
years.

Reviewed by:	bde
Tested by:	exp-run by bdrewery
2013-08-26 18:16:05 +00:00
John-Mark Gurney
534b11a131 Add support for my:
CPU: AMD A10-5700 APU with Radeon(tm) HD Graphics    (3393.89-MHz K8-class CPU)
2013-08-26 17:38:36 +00:00
Rafal Jaworowski
b949475db0 Introduce superpages support for ARMv6/v7.
Promoting base pages to superpages can increase TLB coverage and allow for
efficient use of page table entries.  This development provides FreeBSD/ARM
with superpages management mechanism roughly equivalent to what we have for
i386 and amd64 architectures.

1. Add mechanism for automatic promotion of 4KB page mappings to 1MB section
   mappings (and demotion when not needed, respectively).

2. Managed and non-kernel mappings are now superpages-aware.

3. The functionality can be enabled by setting "vm.pmap.sp_enabled" tunable to
   a non-zero value (either in loader.conf or by modifying "sp_enabled"
   variable in pmap-v6.c file).  By default, automatic promotion is currently
   disabled.

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-08-26 17:12:30 +00:00
Rafal Jaworowski
995c2b63f7 Provide settings for superpage reservation system on ARM.
This allows for enabling and configuring superpages reservation mechanism in
order to allocate and populate 256 4KB base pages (for the purpose of
promotion to a 1MB superpage).

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-08-26 16:23:54 +00:00
Rafal Jaworowski
026bf0a293 Add missing TAILQ initializer (omitted in r250634).
Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-08-26 15:38:27 +00:00
Gleb Smirnoff
133dae887b Remove comment that is no longer relevant since r254182. 2013-08-26 14:14:25 +00:00
Andre Oppermann
b072bdc119 Fix mbuf debugging printf()'s after the recent mbuf header changes. 2013-08-26 13:17:37 +00:00
Mark Murray
12278dbb57 MFC 2013-08-26 10:40:25 +00:00
Andrew Turner
30ea211052 Update the root device to be correct for use with crochet. 2013-08-26 10:27:15 +00:00
Andrew Turner
74dcb850cc Revert r251370 as it contains a deadlock. 2013-08-26 10:24:59 +00:00
Adrian Chadd
74b4c76e4e Migrate the ff_encap1() routine out into the normal output code.
This will eventually be used by the A-MSDU encapsulation code that
I'm writing - the sub-frame encapsulation requirement is the same.
2013-08-26 09:52:05 +00:00
Jean-Sébastien Pédron
6d485b61ff drm/radeon: Disable build on i386/pc98 2013-08-26 09:17:21 +00:00
Jean-Sébastien Pédron
f171f214dc drm/radeon: Rename the (S)DEBUG macros in atom.c to avoid conflicts
For instance, DEBUG is already defined in the LINT kernel configuration.
This fixes the build of LINT.
2013-08-26 06:31:57 +00:00
Mark Johnston
1ad19fb657 The second last argument of udp:::receive is supposed to contain the
connection state, not the IP header.

X-MFC with:	r254889
2013-08-26 00:28:57 +00:00
Mark Johnston
57f6086735 Implement the ip, tcp, and udp DTrace providers. The probe definitions use
dynamic translation so that their arguments match the definitions for
these providers in Solaris and illumos. Thus, existing scripts for these
providers should work unmodified on FreeBSD.

Tested by:	gnn, hiren
MFC after:	1 month
2013-08-25 21:54:41 +00:00
Jilles Tjoelker
ffeed88842 Fix fcntl F_GETFL F_SETFL for files opened execute-only (O_EXEC).
The FFLAGS and OFLAGS now work correctly also for files opened with O_EXEC.
Except possibly fuse, the other users pass values without O_EXEC set. fuse
appears to assume O_EXEC is handled correctly.

Although F_SETFL may not be commonly used for execute-only file descriptors,
F_GETFL may be useful to find the access mode.
2013-08-25 21:52:04 +00:00
Jean-Sébastien Pédron
89cb1c6641 Bump __FreeBSD_version to 1000051 after Radeon KMS driver import 2013-08-25 20:01:21 +00:00
Jean-Sébastien Pédron
0adf4921fb drm/radeon: Import the Radeon KMS driver
This driver is based on Linux 3.8 and a previous effort by kan@.

More informations about this project can be found on the FreeBSD wiki:
    https://wiki.freebsd.org/AMD_GPU

The driver is split into:

  sys/dev/drm2:
    The driver sources.

  sys/modules/drm2/radeonkmw:
    The driver main kernel module's Makefile.

  sys/modules/drm2/radeonkmsfw:
    All firmware kernel module Makefiles. There's one directory and one
    Makefile for each firmware.

  sys/contrib/dev/drm2/radeonkmsfw:
    All firmware binary sources.

  tools/tools/drm/radeon
    Tools to update firmwares or regenerate some headers.

Merging the driver to FreeBSD 9.x may be possible but not a priority for
now.

Help from:	kib@, kan@
Tested by:	avg@, kwm@, ray@,
		Alexander Yerenkow <yerenkow@gmail.com>,
		Anders Bolt-Evensen <andersbo87@me.com>,
		Denis Djubajlo <stdedjub@googlemail.com>,
		J.R. Oldroyd <fbsd@opal.com>,
		Mikaël Urankar <mikael.urankar@gmail.com>,
		Pierre-Emmanuel Pédron <pepcitron@gmail.com>,
		Sam Fourman Jr. <sfourman@gmail.com>,
		Wade <wade-is-great@live.com>,
		(probably other I forgot...)
HW donations:	kyzh, Yakaz
2013-08-25 19:37:15 +00:00
Jean-Sébastien Pédron
6537c655e3 vga_pci: Remove left-over debugging printf()'s 2013-08-25 18:23:15 +00:00
Jean-Sébastien Pédron
509a8ff67a vga_pci: Add API to map the Video BIOS
Here are two new functions to map and unmap the Video BIOS:
    void * vga_pci_map_bios(device_t dev, size_t *size);
    void   vga_pci_unmap_bios(device_t dev, void *bios);

The BIOS is either taken from the shadow copy made by the System BIOS at
boot time if the given device was used for the default display (i386,
amd64 and ia64 only), or from the PCI expansion ROM.

Additionally, one can determine if a given device was the default
display at boot time using the following new function:
    void   vga_pci_unmap_bios(device_t dev, void *bios);
2013-08-25 18:09:11 +00:00
Jean-Sébastien Pédron
e558c87be3 drm: Use the new drm_atomic.h, following the merge of projects/atomic64
Submitted by:	jkim@
2013-08-25 15:38:16 +00:00
Jean-Sébastien Pédron
a18d713ab7 drm/ttm: Remove unused VM_ALLOC_DMA32 define 2013-08-25 15:33:17 +00:00
Jean-Sébastien Pédron
4360c0bb20 drm/ttm: Fix a reversed condition and add missing locks
This allows to run OpenGL applications on at least two test machines
with the Radeon driver.

Approved by:	kib@
2013-08-25 15:29:23 +00:00
Jean-Sébastien Pédron
be562465c9 drm/ttm: Fix style in ttm_bo_release_mmap() 2013-08-25 15:26:45 +00:00
Jean-Sébastien Pédron
970c941acb drm/ttm: Fix unmap of buffer object
Add a new ttm_bo_release_mmap() function to unmap pages in a
vm_object_t. Pages are freed when the buffer object is later released.

This function is called in ttm_bo_unmap_virtual_locked(), replacing
Linux' unmap_mapping_range(). In particular this is called when a buffer
object is about to be moved, so that its mapping is invalidated.

However, we don't use this function in ttm_bo_vm_dtor(), because the
vm_object_t is already marked as OBJ_DEAD and the pages will be
unmapped.

Approved by:	kib@
2013-08-25 15:15:55 +00:00
Jean-Sébastien Pédron
39db4184ec ttm: "to_page->valid = VM_PAGE_BITS_ALL" before vm_page_dirty(to_page)
Approved by;	kib@
2013-08-25 15:12:26 +00:00
Jean-Sébastien Pédron
fbe1da288c drm/ttm: Improve comment in ttm_bo_vm_ctor() about lack of ref acquisition
Approved by:	kib@
2013-08-25 15:06:48 +00:00
Jean-Sébastien Pédron
df58787aad drm/ttm: When removing a range of pages from a pool, remove all of them
Submitted by:	Mark Kettenis and Jonathan Gray from OpenBSD
Approved by:	kib@
2013-08-25 15:05:22 +00:00
Jean-Sébastien Pédron
9ba6f1ae72 drm/ttm: Fix style errors 2013-08-25 15:01:35 +00:00
Jean-Sébastien Pédron
098cced799 drm/ttm: Make ttm_bo_wait() call uninterruptible in page fault handler
This fixes a crash where a SIGLALRM, heavily used by X.Org, would
interrupt the wait, causing the page fault to fail and the "Xorg"
process to receive a SIGSEGV.

Approved by:	kib@
2013-08-25 15:00:48 +00:00
Jean-Sébastien Pédron
a7fa1c7cc3 drm/ttm: Import Linux commit ff7c60c580d9722f820d85c9c58ca55ecc1ee7c4
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Jan 14 15:08:14 2013 +0100

    drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd try

    This fixes up

    commit e8e89622ed361c46bf90ba4828e685a8b603f7e5
    Author: Daniel Vetter <daniel.vetter@ffwll.ch>
    Date:   Tue Dec 18 22:25:11 2012 +0100

        drm/ttm: fix fence locking in ttm_buffer_object_transfer

    which leaves behind a might_sleep in atomic context, since the
    fence_lock spinlock is held over a kmalloc(GFP_KERNEL) call. The fix
    is to revert the above commit and only take the lock where we need it,
    around the call to ->sync_obj_ref.

    v2: Fixup things noticed by Maarten Lankhorst:
    - Brown paper bag locking bug.
    - No need for kzalloc if we clear the entire thing on the next line.
    - check for bo->sync_obj (totally unlikely race, but still someone
      else could have snuck in) and clear fbo->sync_obj if it's cleared
      already.

    Reported-by: Dave Airlie <airlied@gmail.com>
    Cc: Jerome Glisse <jglisse@redhat.com>
    Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

Approved by:	kib@
2013-08-25 14:58:44 +00:00
Jean-Sébastien Pédron
6ee96714c8 drm/ttm: Import Linux commit 014b34409fb2015f63663b6cafdf557fdf289628
Author: Dave Airlie <airlied@gmail.com>
Date:   Wed Jan 16 15:58:34 2013 +1000

    ttm: on move memory failure don't leave a node dangling

    if we have a move notify callback, when moving fails, we call move notify
    the opposite way around, however this ends up with *mem containing the mm_node
    from the bo, which means we double free it. This is a follow on to the previous
    fix.

    Reviewed-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

Approved by:	kib@
2013-08-25 14:56:14 +00:00
Jean-Sébastien Pédron
6f65d975ed drm/ttm: Import Linux commit 630541863b29f88c7ab34e647758344e4cd1eafd
Author: Dave Airlie <airlied@gmail.com>
Date:   Wed Jan 16 14:25:44 2013 +1000

    ttm: don't destroy old mm_node on memcpy failure

    When we are using memcpy to move objects around, and we fail to memcpy
    due to lack of memory to populate or failure to finish the copy, we don't
    want to destroy the mm_node that has been copied into old_copy.

    While working on a new kms driver that uses memcpy, if I overallocated bo's
    up to the memory limits, and eviction failed, then machine would oops soon
    after due to having an active bo with an already freed drm_mm embedded in it,
    freeing it a second time didn't end well.

    Reviewed-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

Approved by:	kib@
2013-08-25 14:55:08 +00:00
Jean-Sébastien Pédron
aacce5b681 drm/ttm: Import Linux commit cc4c0c4de3c775be22072ec3251f2e581b63d9a0
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date:   Tue Jan 15 14:57:28 2013 +0100

    drm/ttm: unexport ttm_bo_wait_unreserved

    All legitimate users of this function outside ttm_bo.c are gone, now
    it's only an implementation detail.

    Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>

Approved by:	kib@
2013-08-25 14:53:39 +00:00
Jean-Sébastien Pédron
fb61ac33be drm/ttm: Import Linux commit f2d476a110bc24fde008698ae9018c99e803e25c
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date:   Tue Jan 15 14:57:10 2013 +0100

    drm/ttm: use ttm_bo_reserve_slowpath_nolru in ttm_eu_reserve_buffers, v2

    This requires re-use of the seqno, which increases fairness slightly.
    Instead of spinning with a new seqno every time we keep the current one,
    but still drop all other reservations we hold. Only when we succeed,
    we try to get back our other reservations again.

    This should increase fairness slightly as well.

    Changes since v1:
     - Increase val_seq before calling ttm_bo_reserve_slowpath_nolru and
       retrying to take all entries to prevent a race.

    Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>

Approved by:	kib@
2013-08-25 14:52:20 +00:00
Jean-Sébastien Pédron
8aa5d01931 drm/ttm: Import Linux commit 5e45d7dfd74100d622f9cdc70bfd1f9fae1671de
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date:   Tue Jan 15 14:57:05 2013 +0100

    drm/ttm: add ttm_bo_reserve_slowpath

    Instead of dropping everything, waiting for the bo to be unreserved
    and trying over, a better strategy would be to do a blocking wait.

    This can be mapped a lot better to a mutex_lock-like call.

    Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>

Approved by:	kib@
2013-08-25 14:47:22 +00:00
Jean-Sébastien Pédron
aa675725db drm/ttm: Import Linux commit 7a1863084c9d90ce4b67d645bf9b0f1612e68f62
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date:   Tue Jan 15 14:56:48 2013 +0100

    drm/ttm: cleanup ttm_eu_reserve_buffers handling

    With the lru lock no longer required for protecting reservations we
    can just do a ttm_bo_reserve_nolru on -EBUSY, and handle all errors
    in a single path.

    Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>
2013-08-25 14:41:22 +00:00
Jean-Sébastien Pédron
f25ca89630 drm/ttm: Import Linux commit 63d0a4195560362e2e00a3ad38fc331d34e1da9b
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date:   Tue Jan 15 14:56:37 2013 +0100

    drm/ttm: remove lru_lock around ttm_bo_reserve

    There should no longer be assumptions that reserve will always succeed
    with the lru lock held, so we can safely break the whole atomic
    reserve/lru thing. As a bonus this fixes most lockdep annotations for
    reservations.

    Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
    Reviewed-by: Jerome Glisse <jglisse@redhat.com>
2013-08-25 14:39:51 +00:00
Jean-Sébastien Pédron
0277f749a3 drm: Update drm_atomic.h, now that projects/atomic64 is in HEAD
Submitted by:	jkim@
2013-08-25 14:33:49 +00:00
Jean-Sébastien Pédron
01655b8522 drm: Add missing bits to drmP.h, required by the Radeon driver
Some of the FreeBSD-specific definitions are moved to drm_os_freebsd.h.
But there's still work to do to clean it up and reduce the diff with
Linux' drmP.h.
2013-08-25 14:27:14 +00:00
Andre Oppermann
ef4a3f10d8 Fix CSUM compatibility mapping. SCTP is a layer 4 protocol.
Submitted by:	tuexen
2013-08-25 13:30:37 +00:00
Adrian Chadd
81c4f79f18 Update the mis-predicted branch PMC names (for sandy bridge) to not clash.
The SDM (June 2013) tables on these are rather confusing.  Yes, they
assign the same name (BR_MISP_RETIRED.ALL_BRANCHES) to two codes
(C5H/00H and C5H/04H.) The latter however is the PEBS version.

So, to make it easier to see the difference - and yes, we can use
both without having to actually enable the PEBS specific bits! -
just rename the PEBS one to _PS so there's no clashing.

Tested:

* Sandy bridge
2013-08-25 12:58:34 +00:00
Michael Tuexen
1a94cdbea7 Provide human readable debug output. 2013-08-25 12:44:03 +00:00
Jean-Sébastien Pédron
bd5c482a8c drm: Import drm_fixed.h from Linux 3.8 2013-08-25 12:27:15 +00:00
Jean-Sébastien Pédron
a435cf5cd5 drm: Update drm_pciids.h based on Linux 3.8
This header can be easily updated using the new "gen-drm_pciids" script,
available in tools/tools/drm. The script uses the Linux' drm_pciids.h
header for new IDs, the FreeBSD's one because we add the name of the
device to each IDs, and the PCI IDs database (misc/pciids port) to fill
this name automatically for new IDS.

To call the script:
  tools/tools/drm/gen-drm_pciids					\
    /path/to/linux/drm_pciids.h						\
    /path/to/freebsd/drm_pciids.h					\
    /path/to/pciids/pci.ids
2013-08-25 12:20:57 +00:00
Adrian Chadd
cb42cde6ec Fix a >80 character long line, introduced in my previous commit.
Noticed by: hiren
2013-08-25 12:02:20 +00:00
Jean-Sébastien Pédron
e27c6c9fa2 drm: Import drm_pcie_get_speed_cap_mask() in drm_pci.c
This comes with several PCI_VENDOR_ID_* defines which should go in a
more central place.
2013-08-25 11:34:37 +00:00
Andrew Turner
85e8977a2c Add the frame information to cpu_switch to allow us to unwind out of it,
for example when dumping threads in the kernel debugger.
2013-08-25 11:23:38 +00:00
Andrew Turner
da154710c4 Add the unwind information to irq_entry so we can pass through it when
unwinding the stack.
2013-08-25 11:21:03 +00:00
Andre Oppermann
285c5301aa Bump FreeBSD_version after the struct mbuf changes in r254780,
r254799, r254804, r254807, and r254842.

Sponsored by:	The FreeBSD Foundation
2013-08-25 11:01:18 +00:00
Andre Oppermann
bb25e5ab00 Give (*ext_free) an int return value allowing for very sophisticated
external mbuf buffer management capabilities in the future.

For now only EXT_FREE_OK is defined with current legacy behavior.

Sponsored by:	The FreeBSD Foundation
2013-08-25 10:57:09 +00:00
Jean-Sébastien Pédron
adeff39cd4 drm: Import list_for_each_entry_safe_from() macro 2013-08-25 10:28:02 +00:00
Jean-Sébastien Pédron
9f2e0f5d19 drm: Use DRM_IF_MAJOR & DRM_IF_MINOR from drm_core.h 2013-08-25 10:13:23 +00:00
Mark Murray
6871a82d32 MFC 2013-08-25 10:08:58 +00:00
Jean-Sébastien Pédron
735f427563 drm: In drm_gem_name_create(), verify argument before acquiring lock
Submitted by:	J.R. Oldroyd <jr@opal.com>
2013-08-25 10:04:10 +00:00
Jean-Sébastien Pédron
10548903da drm: Call "gem_close_object" driver callback from drm_gem_object_release_handle()
This fixes leakage of "bo_va" for Cayman and following card generations.
2013-08-25 10:01:59 +00:00
Jean-Sébastien Pédron
1eeccc8f4c drm: Support gem_open_object() and gem_close_object() callbacks
... in struct drm_driver_info.
2013-08-25 09:58:31 +00:00
Jean-Sébastien Pédron
b5185a8933 drm: Fix typo in KASSERT message: s/Dandling/Dangling/ 2013-08-25 09:53:00 +00:00
Andre Oppermann
9850f95989 For now limit printf(9) %x of the 64bit pkthdr.csum_flags field to 32bits.
The upper 32bits are not occupied for now.

Sponsored by:	The FreeBSD Foundation
2013-08-25 09:49:00 +00:00
Jean-Sébastien Pédron
8479311ef0 drm: Import Linux commit cd004b3f4cd4169815c82bf9e424fda06978898a
Author: Shirish S <s.shirish@samsung.com>
Date:   Thu Aug 30 07:04:06 2012 +0000

    drm: edid: add support for E-DDC

    The current logic for probing ddc is limited to
    2 blocks (256 bytes), this patch adds support
    for the 4 block (512) data.

    To do this, a single 8-bit segment index is
    passed to the display via the I2C address 30h.
    Data from the selected segment is then immediately
    read via the regular DDC2 address using a repeated
    I2C 'START' signal.

    Signed-off-by: Shirish S <s.shirish@samsung.com>
    Reviewed-by: Jean Delvare <jdelvare@suse.de>
    Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
    Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-08-25 09:46:03 +00:00
Andre Oppermann
24c6ede6f0 Change m->pkthdr.header to m->pkthdr.PH_loc.ptr after r254804
to transiently store pointers to packet headers.

Sponsored by:	The FreeBSD Foundation
2013-08-25 09:45:26 +00:00
Andre Oppermann
edb159e1ea Remove unnecessary setup of the m->pkthdr.header pointer.
Sponsored by:	The FreeBSD Foundation
2013-08-25 09:41:37 +00:00
Andre Oppermann
df3a21692b Adjust socow_iodone() after r254799.
Sponsored by:	The FreeBSD Foundation
2013-08-25 09:40:15 +00:00
Hans Petter Selasky
8f39f442c9 Bugfix: The endpoint profile should only be checked in device mode when
allocating USB transfers and not in host mode.

Reported by:	George Mitchell <george+freebsd@m5p.com>
2013-08-25 08:42:50 +00:00
Adrian Chadd
c55e621eed Update the MEM_UOP_RETIRED PMC operation for sandy bridge and sandy
bridge Xeon.

Summary: These are PEBS events but they're also available as normal
counter/sample events.  The source table (Table 19-2) lists the
base versions (LOAD, STLB_MISS, SPLIT, ALL) but it says they must
be qualified with other values.  This particular commit fleshes
out those umask values.

Source:

* Linux; SDM June 2013, Volume 3B, Table 19-2 and 18-21.

Tested:

* Sandy Bridge (non-Xeon)
2013-08-25 02:07:28 +00:00
Alfred Perlstein
250053bc41 Remove the #ifdef OFED from the 20 byte mac in struct llentry.
With this change it is now possible to build the entire infiniband
stack as modules and load it dynamically including IP over IB.
2013-08-25 01:55:14 +00:00
Jean-Sébastien Pédron
92cf4f8de0 drm: In drm_mmap_single, try ttm_bo_mmap_single() before drm_gem_mmap_single()
In drivers such as the Radeon driver, the DRIVER_GEM features flag is
set but TTM is used to mmap buffer object.
2013-08-25 00:34:44 +00:00
Jean-Sébastien Pédron
5eaeb54990 drm: Fix cleanup if device initialization fails
This plugs some memory leaks.
2013-08-25 00:22:34 +00:00
Jean-Sébastien Pédron
22f61fe5d4 drm: Use driver-provided "use_msi" callback to determine if MSI is blacklisted
For now, keep the static array for i915. But eventually, it should be
moved to a callback in the driver itself.
2013-08-25 00:13:53 +00:00
Jean-Sébastien Pédron
f7eda40d0e drm: Don't delete already deleted iicbus child from drm_iic_dp_aux
The iic_dp_aux_detach callback is therefore useless: it's replaced by
bus_generic_detach. This fixes a "General protection fault" panic during
second (incorrect) deletion of the child.

Tested by:	kwm@
Reviewed by:	ray@
2013-08-24 23:54:06 +00:00
Jean-Sébastien Pédron
285be846af drm: Move definition of EREMOTEIO to drmP.h
It will be used by both i915 and radeon drivers.

Add ERESTARTSYS definition at the same time.
2013-08-24 23:47:31 +00:00
Jean-Sébastien Pédron
74eb6a63ca drm: Import drm_dp_helper.c from Linux 3.8-rc3
While here, update drm_dp_helper.h to better match Linux one.
2013-08-24 23:38:57 +00:00
Andre Oppermann
ce28636bcf After r254779 "error" must always be present in mb_ctor_pack(),
not only when MAC is defined.

Reported by:	gjb / tinderbox
Sponsored by:	The FreeBSD Foundation
2013-08-24 21:25:53 +00:00
Mark Johnston
29f4e216f2 Rename the kld_unload event handler to kld_unload_try, and add a new
kld_unload event handler which gets invoked after a linker file has been
successfully unloaded. The kld_unload and kld_load event handlers are now
invoked with the shared linker lock held, while kld_unload_try is invoked
with the lock exclusively held.

Convert hwpmc(4) to use these event handlers instead of having
kern_kldload() and kern_kldunload() invoke hwpmc(4) hooks whenever files are
loaded or unloaded. This has no functional effect, but simplifes the linker
code somewhat.

Reviewed by:	jhb
2013-08-24 21:13:38 +00:00
Andre Oppermann
ce6169e715 Remove unused m_free_fast(). The difference to m_free() is only
2 predictable branches nowadays.  However as a pre-condition the
caller had to ensure that the mbuf pkthdr did not have any mtags
attached to it, costing some potential branches again.

Sponsored by:	The FreeBSD Foundation
2013-08-24 21:09:57 +00:00
Mark Johnston
0770f164d3 Set things up so that linker_file_lookup_set() is always called with the
linker lock held. This makes it possible to call it from a kld event handler
with the shared lock held.

Reviewed by:	jhb
2013-08-24 21:08:55 +00:00
Mark Johnston
3a277424e6 Remove the kld lock macros and just use the sx(9) API. Add locking in
linker_init_kernel_modules() and linker_preload() in order to remove most
of the checks for !cold before asserting that the kld lock is held. These
routines are invoked by SYSINIT(9), so there's no harm in them taking the
kld lock.
2013-08-24 21:07:04 +00:00
Joerg Wunsch
1f97b64cbb Do not use "Enable Implied Seek" on enhanced floppy controllers. This
breaks the "2step" feature of the driver, e.g. in order to read 360
KiB media on a 1200 KiB drive.

As the only potential advantage of implied (vs. explicit) seeks is to
minimize the software effort, yet our driver always contained the
logic needed for explicit seeks, simply dropping implied seeks is the
best solution without introducing risks for new bugs.  There is no
performance penalty, reading a 1440 KiB medium takes exactly the same
time with both, implied or explicit seeks.

MFC after:	1 week
2013-08-24 21:04:54 +00:00
Mark Johnston
161330357c Remove some code that has been commented out since it was added in 2000. 2013-08-24 21:00:39 +00:00
Andre Oppermann
bf2e93f1fe Compact m_hdr by packing the type and flags fields into one uint32_t.
The mbuf type is an enumerator with only a handful of types in use and
thus reduced from int to 8bits allowing for 255 types to be specified.
Only 5 types have been in use for a long time.

The flags field gets the remaining 24 bits with 12 bits for global
persistent flags and 12 bits for protocol/layer specific overlays.
Some of the global flags/functionality can be moved to the csum_flags
or ext_flags bits in the future.

MT_VENDOR[1-4] and MT_EXP[1-4] types for vendor-internal and
experimental local mapping are added.

The size of m_hdr shrinks from 24/40 to 20/32bytes (32/64bit architectures).

Sponsored by:	The FreeBSD Foundation
2013-08-24 20:26:41 +00:00
Andre Oppermann
7c14da7202 Add mtodo(m, o) macro taking an additional offset into the mbuf data section.
Sponsored by:	The FreeBSD Foundation
2013-08-24 19:58:36 +00:00
Andre Oppermann
1b4381afbb Restructure the mbuf pkthdr to make it fit for upcoming capabilities and
features.  The changes in particular are:

o Remove rarely used "header" pointer and replace it with a 64bit protocol/
  layer specific union PH_loc for local use.  Protocols can flexibly overlay
  their own 8 to 64 bit fields to store information while the packet is
  worked on.

o Mechanically convert IP reassembly, IGMP/MLD and ATM to use pkthdr.PH_loc
  instead of pkthdr.header.

o Extend csum_flags to 64bits to allow for additional future offload
  information to be carried (e.g. iSCSI, IPsec offload, and others).

o Move the RSS hash type enumerator from abusing m_flags to its own 8bit
  rsstype field.  Adjust accessor macros.

o Add cosqos field to store Class of Service / Quality of Service information
  with the packet.  It is not yet supported in any drivers but allows us to
  get on par with Cisco/Juniper in routing applications (plus MPLS QoS) with
  a modernized ALTQ.

o Add four 8 bit fields l[2-5]hlen to store the relative header offsets
  from the start of the packet.  This is important for various offload
  capabilities and to relieve the drivers from having to parse the packet
  and protocol headers to find out location of checksums and other
  information.  Header parsing in drivers is a lot of copy-paste and
  unhandled corner cases which we want to avoid.

o Add another flexible 64bit union to map various additional persistent
  packet information, like ether_vtag, tso_segsz and csum fields.
  Depending on the csum_flags settings some fields may have different usage
  making it very flexible and adaptable to future capabilities.

o Restructure the CSUM flags to better signify their outbound (down the
  stack) and inbound (up the stack) use.  The CSUM flags used to be a bit
  chaotic and rather poorly documented leading to incorrect use in many
  places.  Bring clarity into their use through better naming.
  Compatibility mappings are provided to preserve the API.  The drivers
  can be corrected one by one and MFC'd without issue.

o The size of pkthdr stays the same at 48/56bytes (32/64bit architectures).

Sponsored by:	The FreeBSD Foundation
2013-08-24 19:51:18 +00:00
Andre Oppermann
edd26b66ce Change local variable tso_segsz to tsosegsz to avoid mbuf.h macro conflicts.
Sponsored by:	The FreeBSD Foundation
2013-08-24 19:38:36 +00:00
Kenneth D. Merry
aaea33e51f Fix a printf format warning on 32-bit mips and powerpc.
Reported by:	bde, gjb
Pointy hat to:	ken
2013-08-24 19:02:36 +00:00
Andre Oppermann
3b460852c4 Remove unnecessary setup of the m->pkthdr.header pointer.
Sponsored by:	The FreeBSD Foundation
2013-08-24 17:14:14 +00:00
Andre Oppermann
9a73687609 Add an mbuf pointer parameter to (*ext_free) to give the external
free function access to the mbuf the external memory was attached
to.

Mechanically adjust all users to include the mbuf parameter.

This fixes a long standing annoyance for external free functions.
Before one had to sacrifice one of the argument pointers for this.

Sponsored by:	The FreeBSD Foundation
2013-08-24 16:57:44 +00:00
Jean-Sébastien Pédron
06b77ec36d drm: Fix leak of connector->edid_blob_ptr 2013-08-24 16:55:53 +00:00
Jean-Sébastien Pédron
0bf283a517 drm: Const'ify the 1st "drm_display_mode" passed to "mode_fixup" callbacks
This will be needed by the Radeon KMS driver.
2013-08-24 16:50:47 +00:00
Jean-Sébastien Pédron
d08e4108f6 drm/i915: Import Linux commit 71244653a8fb0f46bc12ae421f1d5f72af6a75da
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Jun 4 18:39:20 2012 +0200

    drm/i915: adjusted_mode->clock in the dp mode_fixup

    ... instead of changing mode->clock, which we should leave as-is.

    After the previous patch we only touch that if it's a panel, and then
    adjusted mode->clock equals adjusted_mode->clock. Outside of
    intel_dp.c we only use ajusted_mode->clock in the mode_set functions.

    Within intel_dp.c we only use it to calculate the dp dithering
    and link bw parameters, so that's the only thing we need to fix
    up.

    As a temporary ugliness (until the cleanup in the next patch) we
    pass the adjusted_mode into dp_dither for both parameters (because
    that one still looks at mode->clock).

    Note that we do overwrite adjusted_mode->clock with the selected dp
    link clock, but that only happens after we've calculated everything we
    need based on the dotclock of the adjusted output configuration.

    Outside of intel_dp.c only intel_display.c uses adjusted_mode->clock,
    and that stays the same after this patch (still equals the selected dp
    link clock). intel_display.c also needs the actual dotclock (as
    target_clock), but that has been fixed up in the previous patch.

    v2: Adjust the debug message to also use adjusted_mode->clock.

    Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
    Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-08-24 16:41:14 +00:00
Jean-Sébastien Pédron
943c0e86fe drm: Import drm_buffer.[ch] from Linux 3.8-rc3
This will be used by the Radeon KMS driver.
2013-08-24 16:14:20 +00:00
Jean-Sébastien Pédron
e3b7062fce drm: Call drm_global_init() & drm_global_release() at module load/unload 2013-08-24 15:47:15 +00:00
Ulrich Spörlein
ea3629808d Include bsd.own.mk before trying to check MK_* values. 2013-08-24 15:41:36 +00:00
Alexander Motin
596d33e923 MFprojects/camlock r254460:
Remove locking from taskqueue_member().  The list of threads is static
during the taskqueue life cycle, so there is no need to protect it,
taking quite congested lock several more times for each ZFS I/O.
2013-08-24 14:41:49 +00:00
Mark Murray
ddbfa6b19e 1) example (partially humorous random_adaptor, that I call "EXAMPLE")
* It's not meant to be used in a real system, it's there to show how
   the basics of how to create interfaces for random_adaptors. Perhaps
   it should belong in a manual page

2) Move probe.c's functionality in to random_adaptors.c
 * rename random_ident_hardware() to random_adaptor_choose()

3) Introduce a new way to choose (or select) random_adaptors via tunable
"rngs_want" It's a list of comma separated names of adaptors, ordered
by preferences. I.e.:
rngs_want="yarrow,rdrand"

Such setting would cause yarrow to be preferred to rdrand. If neither of
them are available (or registered), then system will default to
something reasonable (currently yarrow). If yarrow is not present, then
we fall back to the adaptor that's first on the list of registered
adaptors.

4) Introduce a way where RNGs can play a role of entropy source. This is
mostly useful for HW rngs.

The way I envision this is that every HW RNG will use this
functionality by default. Functionality to disable this is also present.
I have an example of how to use this in random_adaptor_example.c (see
modload event, and init function)

5) fix kern.random.adaptors from
kern.random.adaptors: yarrowpanicblock
to
kern.random.adaptors: yarrow,panic,block

6) add kern.random.active_adaptor to indicate currently selected
adaptor:
root@freebsd04:~ # sysctl kern.random.active_adaptor
kern.random.active_adaptor: yarrow

Submitted by:	Arthur Mesh <arthurmesh@gmail.com>
2013-08-24 13:54:56 +00:00
Alexander Motin
5f4fc3dbcb Make dummynet use new direct callout(9) execution mechanism. Since the only
thing done by the dummynet handler is taskqueue_enqueue() call, it doesn't
need extra switch to the clock SWI context.

On idle system this change in half reduces number of active CPU cycles and
wakes up only one CPU from sleep instead of two.

I was going to make this change much earlier as part of calloutng project,
but waited for better solution with skipping idle ticks to be implemented.
Unfortunately with 10.0 release coming it is better get at least this.
2013-08-24 13:34:36 +00:00