Commit Graph

3443 Commits

Author SHA1 Message Date
zbb
4a3e4c4e49 Add etherswitch support to mge
This commit introduces support for etherswitch devices that utilize SMI as
a way of accessing its registers. SMI register is located in address space
of mge -- access to it was exported through MDIO interface.

Attachment functions were enhanced so as to ensure proper initialisation
in both cases: 1) PHYs attached directly to mge, 2) PHYs attached to
switch device and switch attached to mge. Attachment of etherswitch device
depends on dts entry with compatible="mrvl,sw" property. If none is found,
typical PHY attachment procedure follows.

In case of switch attached, PHYs' status and configuration is accessible
via etherswitchcfg, and ifconfig shows always-up, non-configurable mge
interfaces.

Due to the fact that there may be simultaneous accessess to SMI
registers (e.g. from PHY attached to one of mge instances and switch
to the other), SMI access interlock was added. It is SX lock,
because sleep ability is necessary -- busy-waiting would result
in poor performance due to long delays required by hardware.
Underlying switch driver is obliged to use sleepable locks as well.

Reviewed by:    adrian
Obtained from:  Semihalf
Submitted by:   Bartosz Szczepanek <bsz@semihalf.com>
Differential revision: https://reviews.freebsd.org/D3900
2015-10-25 22:00:56 +00:00
ian
3f5c029ee2 Define a couple macros to access cacheline size/mask in an arch-dependent
way.  This code should now work for all arm versions v4 thru v7.
2015-10-24 21:27:09 +00:00
ian
03b5706014 Provide armv4/v5 implementations of several of the armv6 cache maintenance
functions.  This will make it possible to use the same busdma code for all
arm platforms v4 thru v7.
2015-10-24 21:25:53 +00:00
ian
5ade80289e Rename dcache_dma_preread() to dcache_inv_poc_dma() to make it clear that it
is a dcache invalidate to point of coherency just like dcache_inv_poc(), but
a slightly different version specific to dma operations.  Elaborate the
comment about how and why it's different.
2015-10-24 19:39:41 +00:00
ian
4e270a2ef3 A few more whitespace, style, and comment cleanups. No functional changes. 2015-10-24 03:01:47 +00:00
ian
0e7658eaf4 Bring in all the new(-ish) statistics code from armv6. 2015-10-24 02:44:13 +00:00
ian
9901e2ee18 Change the preallocation of a busdma segment mapping array from per-tag to
per-map.  The per-tag scheme is not safe, and a mutex can't be used to
protect it because the mapping routines can't sleep.  Code brought in
from armv6 implementation.
2015-10-24 02:18:14 +00:00
ian
a569108b72 Instead of all memory allocations using M_DEVBUF, use new categories
M_BUSDMA for allocations of metadata (tags, maps, segment tracking lists),
and M_BOUNCE for bounce pages.
2015-10-23 22:52:00 +00:00
ian
3ee4e41b74 Instead of all memory allocations using M_DEVBUF, use new categories
M_BUSDMA for allocations of metadata (tags, maps, segment tracking lists),
and M_BOUNCE for bounce pages.
2015-10-23 22:51:48 +00:00
ian
686a14358a Catch up to r232356: change the boundary constraint type to bus_addr_t.
This code lived in the projects/armv6 branch when that change got applied
to all the other arches.
2015-10-23 21:29:37 +00:00
ian
4904660d6f Whitespace and style nits, no functional changes.
The goal is to make these two files cosmetically alike so that the actual
implementation differences are visible.  The only changes which aren't
spaces<->tabs and rewrapping and reindenting lines are a couple fields
shuffled around in the tag and map structs so that everything is in the same
order in both versions (which should amount to no functional change).
2015-10-23 20:49:34 +00:00
jah
075add2496 Remove unclear comment about address truncation in busdma. Add (hopefully much clearer) comment at declaration of PHYS_TO_VM_PAGE().
Noted by:	avg
2015-10-23 12:03:25 +00:00
jah
233a78dc86 Use pmap_quick* functions in armv6 busdma, for bounce buffers and cache maintenance. This makes it safe to sync buffers that have no VA mapping associated with the busdma map, but may have other mappings, possibly on different CPUs. This also makes it safe to sync unmapped bounce buffers in non-sleepable thread contexts.
Similar to r286787 for x86, this treats userspace buffers the same as unmapped buffers and no longer borrows the UVA for sync operations.

Submitted by: 	Svatopluk Kraus <onwahe@gmail.com> (earlier revision)
Tested by:	Svatopluk Kraus
Differential Revision:	https://reviews.freebsd.org/D3869
2015-10-22 16:38:01 +00:00
ian
12b6417dcc Fix parsing of I2C addresses properties in fdt data. I2C address is
represented in 7-bits format in DT files, but system expect it in 8-bit
format.  Also, fix two drivers that locally hack around this bug.

Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-10-21 15:41:16 +00:00
ian
22e625431a Move arm_gic_bind() out of the #ifdef SMP block to fix compile errors in
the not-SMP case.  This is safe because arm_irq_next_cpu() will return
the cpuid of the current/only core in the not-SMP case.

Submitted by:	 Bartosz Szczepanek @ semihalf
2015-10-21 13:59:00 +00:00
jah
29008843d9 Use pmap_quick* for out-of-context bounce buffers and (limited) cache maintenance of unmapped buffers in armv5 busdma.
Tested by:	Mattia Rossi <mattia.rossi.mailinglists@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D3522
2015-10-21 04:53:34 +00:00
ian
22f91ee312 Uncomment some rather important code that was commented out for benchmarking.
Normally this routine is supposed to loop until the PIC returns a "no more
interrupts pending" indication.  I had commented that out to do just one
interrupt per invokation to do some timing tests.

Spotted by:   	Svata Kraus
Pointy Hat:	ian
2015-10-20 15:15:30 +00:00
ganbold
bdf7732eb8 Include "opt_platform.h" to fix kernel build for amlogic devices. 2015-10-20 13:47:36 +00:00
ian
290940e1f5 Follow the advice of the misplaced comment and don't access the map struct
after freeing it.  Remove the comment whose uselessness has been revealed.
2015-10-20 03:27:59 +00:00
ian
a23a5462a5 Set the correct values in the arm aux control register, based on chip type.
The bits in the aux control register vary based on the processor type.  In
the past we've always just set the 'smp' and "broadcast tlb/cache ops' bits,
which worked fine for the first few SoCs we supported.  Now that we support
most of the cortex-a series processors, it's important to get the right bits
set based on the processor type.

Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
2015-10-19 19:18:02 +00:00
gonzo
aa6bcff20c Enable gpiobacklight in BEAGLEBONE config to support LCD capes by
4DSYSTEMS out of box
2015-10-18 23:58:05 +00:00
ian
7b5d098c90 Only decode fdt data which belongs to the GIC controller.
The interrupts-extended property is a list of controller-specific
interrupt tuples for more than one controller.  The decode routine of
every PIC gets called in the pre-INTRNG code (nexus doesn't know which
device instance belongs to which fdt node), so the GIC code has to
check each FDT node it is asked to decode to ensure it is the owner.

Because in the pre-INTRNG world there can only be one instance of a GIC,
it's safe to cache the results of a positive lookup in a static variable
to avoid the expensive lookups on subsequent calls.

Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D2345
2015-10-18 20:37:10 +00:00
ian
d9b26080f6 Include "opt_platform.h" early so that the FDT option is visible as needed. 2015-10-18 20:32:37 +00:00
ian
be375ae276 Enable ARM_INTRNG on IMX6 platforms, and make the imx_gpio driver an
interrupt controller.

The latter is required for INTRNG, because of the hardware erratum
workaround installed by the linux folks into the imx6 FDT data, which remaps
an ethernet interrupt to the gpio device.  In the non-INTRNG world we
intercept the call to map the interrupt and map it back to the ethernet
hardware (because we don't need linux's workaround), but in the INTRNG world
we lose the hookpoint where that remapping was happening, but we gain the
ability to work the way linux does by having the gpio driver dispatch the
interrupt.
2015-10-18 19:54:11 +00:00
ian
fbeda1e06d Enable ARM_INTRNG on the pandaboard platform.
Differential Revision:	https://reviews.freebsd.org/D2048
2015-10-18 18:39:16 +00:00
ian
8a5f64069a Import ARM_INTRNG, the "next generation" interrupt architecture for arm
and armv6 architecures.  The primary enhancement over the old design is
support for hierarchical interrupt controllers (such as a gpio driver
which can receive interrupts from a root PIC and act as a PIC itself for
clients interested in handling a change of gpio pin state as an
interrupt).  The new code also provides an infrastructure for mapping
interrupts described in metadata in the form of a "controller reference
plus interrupt number" tuple into the simple "0-n" flat numeric space
understood by rman and the bus resource mechanisms.

Use of the new code is enabled by setting the ARM_INTRNG option, and by
making a few simple changes to the platform's support code.  In addition
each existing PIC driver needs changes to be ready for INTRNG; this commit
contains the changes for the arm/gic driver, which most armv6 SoCs use, but
it does not enable the new code yet on any platform.

This project has been many years in the making, starting as a GSoC project
by Jakub Klama (jceel@) in 2012.  That didn't get committed right away and
the source base evolved out from under it to some degree.  In 2014 I rebased
the diffs to then -current and did some enhancements in the area of mapping
interrupt numbers and storing associated fdt data, then the project went
cold again for a while.  Eventually Svata Kraus took that work in progress
and did another big round of work on it, removing most of the remaining
rough edges.  Finally I took that and made one more pass through it, mostly
disabling the "INTR_SOLO" feature for now, pending further design
discussions on how to most efficiently dispatch a pending interrupt through
more than one layer of PIC.  The current code with the INTR_SOLO feature
disabled uses approximate 100 extra cpu cycles for each cascaded PIC the
interrupt has to be passed to, so what's left to do is about efficiency, not
correct operation.

Differential Revision:	https://reviews.freebsd.org/D2047
2015-10-18 18:26:19 +00:00
ian
5723997412 Rename arm_init_secondary_ic() -> arm_pic_init_secondary(). The latter is
the name the function will have when the new ARM_INTRNG code is integrated,
and doing this rename first will make it easier to toggle the new interrupt
handling code on/off with a config option for debugging.
2015-10-18 16:54:34 +00:00
ian
522b95ca9c Fix a strange macro re-definition compile error. If the VM_MAXUSER_ADDRESS
value is defined as a config option the definition is emitted into
opt_global.h which is force-included into everything.  In addition, the
symbol is emitted by the genassym mechanism, but that by its nature reduces
the value to a 0xnnnnnnnn number.  When compiling a .S file you end up
with two different definitions of the macro (they evaluate to the same
number, but the text is different, upsetting the compiler).

Nothing has changed about this code for a while but the compile error is
new, so this must be fallout from the clang 3.7 update or something.
2015-10-18 01:03:43 +00:00
kib
7540fa5d76 ARM userspace accessors, e.g. {s,f}uword(9), copy{in,out}(9),
casuword(9) and others, use LDRT and STRT instructions to access
memory with the privileges of userspace.  If the *RT instruction
faults on the kernel address, then additional checks must be done to
not confuse the VM system with invalid kernel-mode faults.

Put ARM on line with other FreeBSD architectures and disallow usermode
buffers which intersect with the kernel address space in advance,
before any accesses are performed.  In other words, vm_fault(9) is no
longer called when e.g. suword(9) stores to invalid (i.e. not
userspace) address.

Also, switch ARM to use fueword(9) and casueword(9).

Note: there is a pending patch in D3617, which adds the special
processing for faults from LDRT and STRT.  The addition of the
processing is useful for potential other uses of the instructions and
for completeness, but standard userspace accessors are better served
by not allowing such faults beforehand.

Reviewed by:	andrew
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D3816
MFC after:	2 weeks
2015-10-15 17:40:39 +00:00
mav
64d53c4c7d Remove compatibility shims for legacy ATA device names.
We got new ATA stack in FreeBSD 8.x, switched to it at 9.x, completely
removed old stack at 10.x, so at 11.x it is time to remove compat shims.
2015-10-11 13:01:51 +00:00
ian
649b177fe3 Use IIC_EBUSBSY and IIC_BUSERR status values consistantly across all drivers.
Make it clearer what each one means in the comments that define them.

IIC_BUSBSY was used in many places to mean two different things, either
"someone else has reserved the bus so you have to wait until they're done"
or "the signal level on the bus was not in the state I expected before/after
issuing some command".

Now IIC_BUSERR is used consistantly to refer to protocol/signaling errors,
and IIC_BUSBSY refers to ownership/reservation of the bus.
2015-10-09 22:49:50 +00:00
ian
0fec972d61 Mostly rewrite the imx i2c driver. This started out as an attempt to fix
one specific problem: the driver didn't check for ACK/NAK after writing a
slave address byte to the bus, and some slaves signal that they are busy
(such as when completing an internal write to flash memory) by sending a
NAK in response to being addressed.

While working on that problem I discovered that the driver's handling of
error conditions in general didn't match the state transition diagram in
the reference manual, and making that right resulted in a lot of code
reorganization.

Along the way various other changes also happened...

 - Remove a mutex that wasn't protecting anything.
 - Remove some mystery DELAY()s, document the few that remain.
 - Use pause_sbt(9) to yield the processor for the bulk of the time it
   takes to transfer each byte rather than busy-polling the whole time.
 - Disable the controller when no transfers are in progress; since we
   don't operate in slave mode, there's no reason to run the hardware.
 - Remove a bunch of unecessary code from probe().
2015-10-09 22:28:56 +00:00
andrew
1b20850b54 Move pmu.c to files.arm and rename the option to pmu. This is not hwpmc
specific as we may use the pmu registers for other uses. No configs seem
to currently build this.

This will allow for more use of this device.

Discussed with:	bz
Sponsored by:	ABT Systems Ltd
2015-10-07 13:19:44 +00:00
kib
58e0a4096f A follow-up to r288492. In fact, revert the mentioned commit for
pre-VFPv3 processors, since they do require software support code to
handle denormals.  For VFPv3 and later, enable flush-to-zero if
hardware does not claim full denormals arithmetic support by VMVFR1_FZ
field in mvfr1 register.

The end result is that we do use correct fpu environment on Cortexes
with VFPv3, while ARM11 (e.g. rpi) is in non-compliant flush-to-zero
mode.  At least CPUs without complete hardware implementation of
IEEE 754 do not cause unhandled floating point exception on underflow,
as it was before r288492.

Noted by:	ian
Tested by:	gjb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-10-07 09:12:49 +00:00
br
7b9bab6fbb Attach interrupt controller device before other devices.
Sponsored by:	University of Cambridge
2015-10-05 13:15:21 +00:00
rwatson
707e8db7f8 Add missing stack unwind information to several assembly functions on
ARMv6/7:

- Define _SAVE() macro to allow unwind data to be conditionally defined for
  ARM assembly code in the kernel.

- Use _SAVE() to provide unwind information for bcopy_page(), and two (of
  many) instances of copyin() and copyout().

Reviewed by:	andrew, imp
MFC after:	3 days
Sponsored by:	University of Cambridge
2015-10-04 09:39:40 +00:00
kib
73fc85db97 Do not set 'flush to zero' VFPSCR_FZ bit by default. The correct
implementation of IEEE 754 arithmetic depends on denormals operating
correctly.  Both perl test suite and paranoia tripped over the
setting.

Reported by:	Stefan Parvu <sparvu@kronometrix.org>
Discussed with:	andrew
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-10-02 13:25:59 +00:00
kib
a7abd83f35 FreeBSD does not support SMP on ARMv5. Since processor is always
self-consistent, there is no need in anything but compiler barrier in
the implementation of atomic_thread_fence_*() on ARMv5.  Split
implementation of fences for ARMv4/5 and ARMv6; the former use
compiler barriers, the later also perform hardware barriers.

An issue which is fixed by the change is the faults from the CP15
coprocessor accesses in the user mode.  This was uncovered by the
pthread_once() changes in r287556.

Reported by:	Mattia Rossi <mattia.rossi.mailinglists@gmail.com>
Discussed with:	alc, cognet, jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-10-02 13:21:08 +00:00
andrew
c71425db1d An IPI must be cleared before it is handled otherwise next IPI could be
missed. In other words, if a new request for an IPI is sent while the
previous request is being handled but the IPI is not cleared yet, the
clearing of the previous IPI request also clears the new one and the
handling is missed.

There are only three MP interrupt controllers in ARM now. Two of them are
fixed by this change, the third one is correct, probably only just by
accident. The fix is minimalistic as new interrupt framework is awaited.

It was debugged on RPi2 where missing IPI handling together with SCHED_ULE
led to situation in which tdq_ipipending was not cleared and so IPI_PREEMPT
was stopped to be sent. Various odditys were found related to slow system
response time like various events timed out, and slow console response.

Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
Reviewed by:	loos, kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D3722
2015-10-01 12:09:05 +00:00
alc
57f2addb31 Exploit r288122 to address a cosmetic issue. Since PV chunk pages don't
belong to a vm object, they can't be paged out.  Since they can't be paged
out, they are never enqueued in a paging queue.  Nonetheless, passing
PQ_INACTIVE to vm_page_unwire() creates the appearance that these pages
are being enqueued in the inactive queue.  As of r288122, we can avoid
this false impression by passing PQ_NONE.

Submitted by:	kmacy (an earlier version)
Differential Revision:	https://reviews.freebsd.org/D1674
2015-09-26 07:18:05 +00:00
andrew
6800798172 Add support for __atomic_FOO_fetch on arm prior to armv6. These return the
new value where the existing functions return the old value.

MFC after:	1 Week
2015-09-22 19:57:31 +00:00
loos
489ed40a5d Enable if_dwc for Allwinner A20 based boards.
This enables the gigabit ethernet on cubieboard2 and banana pi.

A special thanks to Netgate who gently provided me with a banana pi almost
a year ago.
2015-09-21 03:17:41 +00:00
loos
85057105ba Add the A20 glue code for if_dwc.
This code initializes the GMAC clock and sets the pin mux to rgmii.

It also override the if_dwc defaults to set the alternate descriptor type
and MII clock used on A20.

Tested on cubieboard2 and banana pi.
2015-09-21 01:51:37 +00:00
loos
1387cdb079 Add alternate descriptors support for if_dwc.
This also adds a newbus interface that allows a SoC to override the
following settings:

 - if_dwc specific SoC initialization;
 - if_dwc descriptor type;
 - if_dwc MII clock.

This seems to be an old version of the hardware descriptors but it is
still in use in a few SoCs (namely Allwinner A20 and Amlogic at least).

Tested on Cubieboard2 and Banana pi.

Tested for regressions on Altera Cyclone by br@ (old version).

Obtained from:	NetBSD
2015-09-20 14:13:29 +00:00
kib
518734671f Add support for weak symbols to the kernel linkers. It means that
linkers no longer raise an error when undefined weak symbols are
found, but relocate as if the symbol value was 0.  Note that we do not
repeat the mistake of userspace dynamic linker of making the symbol
lookup prefer non-weak symbol definition over the weak one, if both
are available.  In fact, kernel linker uses the first definition
found, and ignores duplicates.

Signature of the elf_lookup() and elf_obj_lookup() functions changed
to split result/error code and the symbol address returned.
Otherwise, it is impossible to return zero address as the symbol
value, to MD relocation code.  This explains the mechanical changes in
elf_machdep.c sources.

The powerpc64 R_PPC_JMP_SLOT handler did not checked error from the
lookup() call, the patch leaves the code as is (untested).

Reported by:	glebius
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-09-20 01:27:59 +00:00
zbb
95f13176f5 Add domain support to PCI bus allocation
When the system has more than a single PCI domain, the bus numbers
are not unique, thus they cannot be used for "pci" device numbering.
Change bus numbers to -1 (i.e. to-be-determined automatically)
wherever the code did not care about domains.

Reviewed by:   jhb
Obtained from: Semihalf
Sponsored by:  The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3406
2015-09-16 23:34:51 +00:00
markj
e8967c8bd9 Add stack_save_td_running(), a function to trace the kernel stack of a
running thread.

It is currently implemented only on amd64 and i386; on these
architectures, it is implemented by raising an NMI on the CPU on which
the target thread is currently running. Unlike stack_save_td(), it may
fail, for example if the thread is running in user mode.

This change also modifies the kern.proc.kstack sysctl to use this function,
so that stacks of running threads are shown in the output of "procstat -kk".
This is handy for debugging threads that are stuck in a busy loop.

Reviewed by:	bdrewery, jhb, kib
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D3256
2015-09-11 03:54:37 +00:00
kib
98df6be028 Do not hold the process around the vm_fault() call from the trap()s.
The only operation which is prevented by the hold is the kernel stack
swapout for the faulted thread, which should be fine to allow.

Remove useless checks for NULL curproc or curproc->p_vmspace from the
trap_pfault() wrappers on x86 and powerpc.

Reviewed by:	alc (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-09-10 17:46:48 +00:00
andrew
e11037aa01 Clean up the style of the LEAVE_HYP macro. 2015-08-31 09:39:16 +00:00
loos
55b48887c4 Add the LED definitions from vendor's DTS.
Add gpioled support to A20 kernel.

While here rename the gpio phandle to match the one used in the vendor's
DTS.
2015-08-30 23:20:00 +00:00
loos
31eef3e083 The vendor's DTS for Allwinner A20 uses a different way to map the gpio
pins, they specify the bank and the pin in two separated cells.

This allow the use of vendor's DTS definitions by adding a gpio map
routine that copes with that.
2015-08-30 22:38:06 +00:00
loos
b1bf7f7806 In preparation to support other A20 based boards, rename the CUBIEBOARD2
kernel configuration to A20.

There are other boards (namely the banana pi) that use exactly the same
devices.

Additionally, we are moving from static FDT support (DTB compiled
in-kernel) to DTB passed to kernel by the boot loader (ubldr).  The u-boot
for these boards are already available on ports and as the crochet support
for these boards isn't committed yet, this should not bring any issues.

Discussed with:		ian
2015-08-30 15:38:41 +00:00
zbb
3e62b0a263 Leave hypervisor mode upon startup on ARMv7
If ARMv7 boots in HYP mode, switch to SVC32.

Reviewed by:   ian
Submitted by:  Wojciech Macek <wma@semihalf.com>
               Jakub Palider  <jpa@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Differential Revision: https://reviews.freebsd.org/D1810
2015-08-25 14:49:11 +00:00
andrew
c62c4d76f3 Enable KDTRACE_HOOKS by default on all armv6 kernels to get more testing. 2015-08-23 21:10:20 +00:00
royger
5b319fbe38 preload_search_info: make sure mod is set
Add a check to preload_search_info to make sure mod is set. Most of the
callers of preload_search_info don't check that the mod parameter is
set, which can cause page faults. While at it, remove some now unnecessary
checks before calling preload_search_info.

Sponsored by:		Citrix Systems R&D
Reviewed by:		kib
Differential Revision:	https://reviews.freebsd.org/D3440
2015-08-21 15:57:57 +00:00
ian
24688715b7 Remove code left over from the armv4 days. On armv4, cache maintenance
operations always had to be aligned and sized to cache lines.  On armv6
and later, cache maintenance operates on a cache line if any part of
the line is referenced in the operation, so we don't need extra code to
align the edges of the sync range.
2015-08-20 19:39:15 +00:00
ian
3ebde95c62 Minor comment and style fixes, no functional change.
Submitted by:		Svatopluk Kraus <onwahe@gmail.com>
2015-08-20 19:14:16 +00:00
kib
ca3ff2693c Typo. 2015-08-20 13:37:08 +00:00
ian
2c940643b9 Enable the watchdog driver on imx6, now that it works. 2015-08-19 21:04:50 +00:00
ian
6dbb8ed5bb Make the imx watchdog actually work, by setting WDOG_CR_WDE (enable bit).
Also, follow the rules from watchdog(9) about what values to return in
various situations (especially, don't touch *error when asked to set a
non-zero timeout that isn't achievable on the hardware).
2015-08-19 20:50:31 +00:00
ian
61dc9ee47b Add compatible strings for all the hardware this driver works with.
Also, move the READ/WRITE bus space access macros from the header into the
source file, and rename them to RD2/WR2 to make it clear they're 16-bit
accessors.  (READ/WRITE just don't seem like good names to be in a public
header file.)
2015-08-19 20:31:35 +00:00
jah
88452fede1 Some cleanups to make the style of pmap_quick_enter_page() and pmap_quick_remove_page() in arm/pmap-v6-new.c more consistent with the rest of the file.
Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
Approved by:	kib (mentor)
2015-08-17 18:28:40 +00:00
ian
8a7e63e880 Use simple fixed name strings for these timecounters and eventimers which
are tied to fixed pieces of hardware; dynamic string formatting isn't needed.
2015-08-14 16:48:07 +00:00
ian
69d8a7bbb6 Add a new PPS driver for AM335x (beaglebone) timer hardware. This can be
used as a module or compiled-in.
2015-08-13 15:19:30 +00:00
marcel
370eb0c51a Instead of having separate do_sync functions for ARM_ARCH 6 vs.
ARM_ARCH >= 7, use the dmb() macro defined in machine/atomic.h

Submitted by:	Steve Kiernan <stevek@juniper.net>
Reviewed by:	imp@
Differential Revision:	https://reviews.freebsd.org/D3355
2015-08-13 14:53:29 +00:00
marcel
e4bc5ae6c2 The Broadcom BCM56060 chip has a Cortex-A9R4 core.
Submitted by:	Steve Kiernan <stevek@juniper.net>
Reviewed by:	imp@
Differential Revision:	https://reviews.freebsd.org/D3357
2015-08-13 14:50:11 +00:00
ian
f1aec4c41a Remove all dregs of the old PPS driver from this code, in preparation for
redoing it as a separate driver.  Now that each hardware timer is handled by
a separate instance of the timer driver, it no longer makes sense to bundle
the pps driver with the regular timecounter code.  (When all 8 timers were
handled by one driver there was no choice about this.)

Split the hardware register definitions out to their own file, so that the
new pps driver (coming in a separate commit later) can share them.

With the PPS driver gone, the question of which hardware timer to use for
what purpose becomes much easier (some instances can't do the PPS capture).
Now we can just hardcore timer2 for eventtimer and timer3 for timecounter.

This also now only instantiates devices for the 2 hardware timers actually
used to implement eventtimer and timecounter.  This is required so that
other drivers can come along and attach to other hardware timers to provide
other functionality.  (In addition to PPS, this hardware can also do PWM
stuff, general pulse width and frequency measurements, etc.  Maybe some
day we'll have drivers for those things.)
2015-08-12 19:40:32 +00:00
ian
25a756cd14 Remove a bogus printf that whines every time loading a driver module
triggers a fresh round of probing.
2015-08-12 19:26:36 +00:00
ian
1bd1e33f87 Add a MODULE_VERSION(), because other things MODULE_DEPEND() on this. 2015-08-12 19:25:22 +00:00
ian
63fee1ed3c Add a routine to return the hardware instance/unit number from ti,hwmods,
given the hardware name.

The ti,hwmods property is used (among other things) to associate an fdt node
with a specific instance of some hardware.  For example given a device node
that contains the property ti,hwmods = "timer3", if you call this passing
"timer" as the hwmod string to look for it would return 3.
2015-08-12 17:23:15 +00:00
ian
db64dae30a Make this compile again when PPS_SYNC is defined. Also remove a couple
comment blocks and constants that no longer apply.
2015-08-11 19:25:26 +00:00
pfg
04e944197e Clean out some externally visible "more then" grammar
MFC after:	3 days
2015-08-11 03:12:09 +00:00
kib
9033c894a1 Make kstack_pages a tunable on arm, x86, and powepc. On i386, the
initial thread stack is not adjusted by the tunable, the stack is
allocated too early to get access to the kernel environment. See
TD0_KSTACK_PAGES for the thread0 stack sizing on i386.

The tunable was tested on x86 only.  From the visual inspection, it
seems that it might work on arm and powerpc.  The arm
USPACE_SVC_STACK_TOP and powerpc USPACE macros seems to be already
incorrect for the threads with non-default kstack size.  I only
changed the macros to use variable instead of constant, since I cannot
test.

On arm64, mips and sparc64, some static data structures are sized by
KSTACK_PAGES, so the tunable is disabled.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 week
2015-08-10 17:18:21 +00:00
emaste
50ae188f8f Rationalize BSD license on sys/*/include/float.h
Remove the advertising clause from the Regents of the University of
California's license, per the letter dated July 22, 1999.

Update clause numbering.
2015-08-05 17:05:35 +00:00
jah
b8c4d76738 Add two new pmap functions:
vm_offset_t pmap_quick_enter_page(vm_page_t m)
void pmap_quick_remove_page(vm_offset_t kva)

These will create and destroy a temporary, CPU-local KVA mapping of a specified page.

Guarantees:
--Will not sleep and will not fail.
--Safe to call under a non-sleepable lock or from an ithread

Restrictions:
--Not guaranteed to be safe to call from an interrupt filter or under a spin mutex on all platforms
--Current implementation does not guarantee more than one page of mapping space across all platforms. MI code should not make nested calls to pmap_quick_enter_page.
--MI code should not perform locking while holding onto a mapping created by pmap_quick_enter_page

The idea is to use this in busdma, for bounce buffer copies as well as virtually-indexed cache maintenance on mips and arm.

NOTE: the non-i386, non-amd64 implementations of these functions still need review and testing.

Reviewed by:	kib
Approved by:	kib (mentor)
Differential Revision:	http://reviews.freebsd.org/D3013
2015-08-04 19:46:13 +00:00
rpaulo
d6d829914b BEAGLEBONE: remove dtrace from MODULES_EXTRA.
This config is already building all modules, so we don't need the
MODULES_EXTRA definition.  It was also causing problems to users who
rely on MODULES_OVERRIDE to do the right thing.

Discussed with:	ian
2015-08-04 19:04:02 +00:00
gonzo
4129b1a798 Pass correct type of argument to ti_gpio_unmask_irq in ti_gpio_activate_resource 2015-08-03 01:22:49 +00:00
gonzo
8864759038 Set output pin initial value based on pin's pinmux pullup/pulldown setup
Some of FDT blobs for AM335x-based devices use pinmux pullup/pulldown
flag to setup initial GPIO ouputp value, e.g. 4DCAPE-43 sets LCD DATAEN
signal this way. It works for Linux because Linux driver does not enforce
pin direction until after it's requested by consumer. So input with pullup
flag set acts as output with GPIO_HIGH value

Reviewed by:	loos
2015-08-01 23:10:36 +00:00
zbb
f7a30036d9 Remove obsolete vendor code from Alpine platform support
This is a clean-up patch from a serie delivering support for
Annapurna Labs Alpine PoC.
The HAL files have already been added to sys/contrib/alpine-hal
so there is no need for them in the platform directory.
This patch removes obsolete files.

Reviewed by:    andrew
Obtained from:  Semihalf
Sponsored by:   Annapurna Labs
Differential Revision: https://reviews.freebsd.org/D3248
2015-07-30 13:45:34 +00:00
sbruno
1ab01f00f8 Remove dead functions pmap_pvdump and pads.
Differential Revision:	D3206
Submitted by:	kevin.bowling@kev009.com
Reviewed by:	alc
2015-07-29 20:47:27 +00:00
gonzo
f0d258568a Fix color mapping for TDA19988. Values for VIP_CNTRL_1 and VIP_CNTRL_2
registers were mixed up
2015-07-25 03:19:02 +00:00
gonzo
d78e89acec Synchronize PIN input/output modes with gnu/dts/include/dt-bindings/pinctrl/am33xx.h
gpio driver requires exact value to match SoC pin mode with GPIO pin direction
2015-07-25 03:03:32 +00:00
gonzo
a9bf9b8d85 If there is panel info in DTB do not wait for HDMI event and setup
framebuffer immediately
2015-07-25 02:59:45 +00:00
markj
fb4cb70b7d Implement the lockstat provider using SDT(9) instead of the custom provider
in lockstat.ko. This means that lockstat probes now have typed arguments and
will utilize SDT probe hot-patching support when it arrives.

Reviewed by:	gnn
Differential Revision:	https://reviews.freebsd.org/D2993
2015-07-19 22:14:09 +00:00
andrew
f281ef9050 Fix atomic_store_64, it should write the value passed in, not the value
read by the load.

Pointy Hat:	andrew
2015-07-19 16:55:47 +00:00
andrew
8672831bb4 Clean up the style of the armv6 atomic code.
Sponsored by:	ABT Systems Ltd
2015-07-19 15:44:51 +00:00
andrew
48cb0ec166 Sort the ARM atomic functions to be in alphabetical order.
Sponsored by:	ABT Systems Ltd
2015-07-19 13:10:47 +00:00
andrew
6832ce6374 Split out the arm and armv6 parts of atomic.h to new files. While here use
__ARM_ARCH to determine which revision of the architecture is applicable.

Sponsored by:	ABT Systems Ltd
2015-07-16 13:33:03 +00:00
zbb
fbdf5266d5 Fix KSTACK_PAGES issue when the default value was changed in KERNCONF
If KSTACK_PAGES was changed to anything alse than the default,
the value from param.h was taken instead in some places and
the value from KENRCONF in some others. This resulted in
inconsistency which caused corruption in SMP envorinment.

Ensure all places where KSTACK_PAGES are used the opt_kstack_pages.h
is included.

The file opt_kstack_pages.h could not be included in param.h
because was breaking the toolchain compilation.

Reviewed by:   kib
Obtained from: Semihalf
Sponsored by:  The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3094
2015-07-16 10:46:52 +00:00
loos
a59cb6a48a Bring a few simplifications to a10_gpio:
o Return the real hardware state in gpio_pin_getflags() instead of keep
   the last state in an internal table.  Now the driver returns the real
   state of pins (input/output and pull-up/pull-down) at all times.
 o Use a spin mutex.  This is required by interrupts and the 1-wire code.
 o Use better variable names and place parentheses around them in MACROS.
 o Do not lock the driver when returning static data.

Tested with gpioled(4) and DS1820 (1-wire) sensors on banana pi.
2015-07-13 18:19:26 +00:00
ian
93f91db3aa Add PRINTF_BUFR_SIZE=128 to avoid interleaved output. 2015-07-12 19:58:12 +00:00
loos
5e85f1c8a9 Return the FDT node of the GPIO controller to gpiobus. It is used by the
children of gpiobus.
2015-07-11 21:09:43 +00:00
andrew
cf5550c91f Always send a SIGSEGV on a map failure. Use the code to tell the reason
for the signal.

Sponsored by:	ABT Systems Ltd
2015-07-11 16:02:06 +00:00
kib
c17f8bfdd5 Add the atomic_thread_fence() family of functions with intent to
provide a semantic defined by the C11 fences with corresponding
memory_order.

atomic_thread_fence_acq() gives r | r, w, where r and w are read and
write accesses, and | denotes the fence itself.

atomic_thread_fence_rel() is r, w | w.

atomic_thread_fence_acq_rel() is the combination of the acquire and
release in single operation.  Note that reads after the acq+rel fence
could be made visible before writes preceeding the fence.

atomic_thread_fence_seq_cst() orders all accesses before/after the
fence, and the fence itself is globally ordered against other
sequentially consistent atomic operations.

Reviewed by:	alc
Discussed with:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
2015-07-08 18:12:24 +00:00
ian
516a263997 Enable ipsec by default on all armv6 platforms. 2015-07-05 14:16:31 +00:00
loos
1aded648f2 Add the routines to activate the GMAC clock and setup the GMAC mode.
Tested on Cubieboard 2 and Banana pi.
2015-07-03 18:39:25 +00:00
loos
51a53682f0 Rename a10_emac_gpio_config() to a10_gpio_ethernet_activate() to make the
change to GMAC easier on A20 SoCs.

On A10 only the EMAC controller is available (fast ethernet), but on A20
there is also GMAC a high (or better) performant controller (gigabit
ethernet).

On A20 the both controllers uses the same pins to talk to the ethernet PHY
(MII or RGMII) and they can be selected by the GPIO pin mux.

There is work in progress to bring in GMAC support.
2015-07-03 17:54:41 +00:00
loos
bcb725defa Remove duplicate and unnecessary includes.
While here remove an unused and wrong define.
2015-07-03 17:09:27 +00:00
loos
608f583b4a Add AHCI attachment code for Allwinner A10/A20 SoCs.
The Allwinner SoC has an AHCI device on its internal main bus rather
than the PCI bus.  This SoC is somewhat underdocumented, and its SATA
controller is no exception.  The methods to support this chip were
harvested from the Linux Allwinner SDK, and then constants invented to
describe what's going on based on low-level constants contained in the
SATA standard and guess work.

This SoC requires a specific AHCI channel setup in order to start the
operations on the channel properly.

Clock setup and AHCI channel setup idea came from NetBSD.

Tested on Cubieboard 2 and Banana pi (and attachment on Cubieboard by
Pratik Singhal).

Differential Revision:	https://reviews.freebsd.org/D737
Submitted by:	imp
Reviewed by:	imp, ganbold, mav, andrew
2015-07-03 14:11:01 +00:00
loos
77e5d907d2 Add DMA support for Allwinner MMC controller.
DMA handles all data transfers up to 128K or 16 segments and fallback to
pio mode when DMA requirements are not met.

The read performance has improved greatly while the write performance also
showed some improvement but seems limited by the card type and quality.

Submitted by:	Pratik Singhal <pratiksinghal@freebsd.org>
Sponsored by:	Google Summer of Code 2015
Tested on:	A10 (cubieboard) and A20 (cubieboard 2 and banana pi)
2015-07-01 23:27:01 +00:00
andrew
f8cfbb75a7 pc_curpmap is only in the armv6 pcpu data. 2015-06-26 09:02:40 +00:00
ian
9c6e8b455a Fix a misplaced #endif (maybe a mismerge?). Emitting the symbol for CURPMAP
is not dependent on whether VFP (hardware floating point) is enabled.
2015-06-24 18:26:04 +00:00
gonzo
df7a41389b Add missing driver for TDA19988 HDMI framer 2015-06-18 16:51:49 +00:00
gonzo
884104c90b Add HDMI support to Beaglebone Black:
- Add driver for TDA19988 HDMI framer
- Add simple interface to communicate with HDMI sink: read EDID and set videomode
- Add event-based API to notify LCD controller when HDMI sink is available
- Add HDMI framer node and add refernce to it to lcdc node. This part of
    DTS tree is custom and does not match Linux DTS because Linux uses
    combination of pseudo-node in DTS and hardcoded driver information
    that does not map to our model.
2015-06-18 00:57:52 +00:00
gonzo
8652dc66fe - Add clk_set_source_freq field to struct ti_clock_dev so clock device
consumers can configure clock frequency
- Add ti_prcm_clk_set_source_freq wrapper for clk_set_source_freq
- Add am335x_clk_set_arm_disp_freq function to control pixel clock
   frequency for LCD and HDMI output. Both of them are sensitive
   to frequency skews and we need to get pixel clock matching requested
   frequency as close to possible
2015-06-17 23:26:00 +00:00
andrew
37e1baa952 Write to the PRRR (Primary Region Remap Register) rather than reading from
it during the early boot.

Found By:	Patrick Wildt <patrick@bitrig.org>
Sponsored by:	ABT Systems Ltd
2015-06-16 17:24:20 +00:00
bz
8d87c98801 Trying to unbreak arm.LINT by properly putting the conditional include
for dtrace further down in the include list where it belongs.

Reviewed by:	andrew
2015-06-16 15:14:40 +00:00
andrew
cd458c627d Add basic support for ACPI. It splits out the nexus driver to two new
drivers, one for fdt, one for acpi. It then uses this to decide if it will
use fdt or acpi.

The GICv2 (interrupt controller) and Generic Timer drivers have been
updated to handle both cases.

As this is early code we still need FDT to find the kernel console, and
some parts are still missing, including PCI support.

Differential Revision:	https://reviews.freebsd.org/D2463
Reviewed by:	jhb, jkim, emaste
Obtained from:	ABT Systems Ltd
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
2015-06-11 15:45:33 +00:00
andrew
c834aadf0c Stop using VFP in pcpu.h when we mean ARMv6 and later. 2015-06-11 13:58:40 +00:00
andrew
87f930acae Fix the spelling of __ARM_ARCH >= 6 in sys/arm/arm. 2015-06-11 13:54:18 +00:00
br
1383b5af08 Allow DTrace to be compiled-in to the kernel.
This will require for AArch64 as we dont have modules yet.

Sponsored by:	HEIF5
Sponsored by:	ARM Ltd.
Differential Revision:	https://reviews.freebsd.org/D1997
2015-06-10 15:53:39 +00:00
mjg
67f2eebb44 Generalised support for copy-on-write structures shared by threads.
Thread credentials are maintained as follows: each thread has a pointer to
creds and a reference on them. The pointer is compared with proc's creds on
userspace<->kernel boundary and updated if needed.

This patch introduces a counter which can be compared instead, so that more
structures can use this scheme without adding more comparisons on the boundary.
2015-06-10 10:43:59 +00:00
sobomax
ee4e62d12d "status_reg.acpwr ? 1 : 0" is now the same as just "status_reg.acpwr". 2015-06-09 19:22:13 +00:00
sobomax
4dc885726b Fix a typo in a comment that has been carried over from am335x_pmic.c. 2015-06-09 19:17:33 +00:00
sobomax
8fbb8a1dd5 Use tab to do identation consistently. 2015-06-09 19:04:55 +00:00
sobomax
0500876d98 Extend TPS65217 support to be able to pull and decode battery
charger configuration and provide some basic control knobs to
set charger voltage and dump config on boot. Two loader tunables
have been added:

 o hw.am335x_pmic.bootverbose set to 1 to get more info on the
   boot;

 o hw.am335x_pmic.vo: set to charger voltage to be applied on
   kernel initialization time, supported values are "4.10V",
   "4.15V", "4.20V" and "4.25V".

Cleanup code a bit in general, move TPS65217 register
definitions into a separate header, convert bit-banging
defines into bitmap structures.

Also threat the case when power source is neither "AC" nor "USB"
as "Battery", not "Unknown".
2015-06-09 18:46:31 +00:00
alc
cbefd9b195 Account for superpage mappings that are created by pmap_copy(). 2015-06-09 18:04:28 +00:00
alc
263927b83e Retire VM_FREEPOOL_CACHE as the next step in eliminating PG_CACHE pages.
Differential Revision:	https://reviews.freebsd.org/D2712
Reviewed by:	kib
Sponsored by:	EMC / Isilon Storage Division
2015-06-08 04:59:32 +00:00
andrew
a935431096 Stop checking for ARM_TP_ADDRESS when we mean to check if building for
ARMv6 or later.
2015-06-07 13:59:02 +00:00
andrew
a754787de0 Remove pc_cpu, it was duplicating pc_cpuid so was unneeded. 2015-06-07 10:50:15 +00:00
br
50083ac4d7 Include a header required for vtophys(). 2015-06-06 14:26:40 +00:00
ian
421f222bf9 Better handling of userland sysarch() requests to flush icache.
On armv6, cache maintenance can trigger page faults.  Add handling so that
these turn into SIGSEGV that kills the process rather than panics that kill
the kernel.

Differential Revision:	https://reviews.freebsd.org/D2035
Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-06-03 14:07:50 +00:00
ian
51fc7fcdc1 Add a missing wakeup when releasing ownership of the SPI hardware.
Also, validate the chipselect parameter before grabbing ownership of the
hardware, and report timeout errors after releasing it.

PR:		200584
2015-06-02 16:07:28 +00:00
andrew
2898b805c5 Remove __ARM_EABI__ from sys/arm/arm, building for oabi is unsupported. 2015-06-01 18:15:44 +00:00
andrew
4dd00c1d3a Clear the C bit of the saved program state register when also clearing the
return value. We use this bit to signal when a syscall has failed, and
without this getcontext/setcontext may fail.

MFC after:	1 week
2015-06-01 18:13:32 +00:00
andrew
d5156d8acb Set the return value correctly on copy failure in copystr.
MFC after:	1 week
2015-05-31 21:03:06 +00:00
andrew
49a7ecd041 We only support the ARM EABI in head, remove the check on __ARM_EABI__. 2015-05-31 10:51:06 +00:00
loos
e680cfdaff Remove unused mutex and softc variables. 2015-05-26 01:30:09 +00:00
ian
c166b02443 Ensure that all arm kernel configs contain ALT_BREAK_TO_DEBUGGER and not
BREAK_TO_DEBUGGER if they have a serial console (most do).  A burst of
serial line noise (such as unplugging a usb serial adapter) can look like
a break and drop a working system into the debugger.  The alt break sequence
(<CR>~^B) works fine on both serial and non-serial consoles.
2015-05-25 23:27:13 +00:00
gonzo
81e58ddcdd Rename fdt_find_child to ofw_bus_find_child. There is nothing FDT-specific
in this function.

Suggested by: andrew@
2015-05-24 23:53:10 +00:00
dchagin
0969667a9e The kernel sends signals to the processes via ABI specific sv_sendsig method.
Native ABI do not need signal conversion, only emulators may want this. Usually
emulators implements its own sv_sendsig method. For now only ibcs2 emulator does
not have own sv_sendsig implementation and depends on native sendsig() method.
So, remove any extra attempts to convert signal numbers from native sendsig()
methods except from i386 where ibsc2 is living.
2015-05-24 17:56:02 +00:00
andrew
8628fb1e0f Add support for getting the memory map from EFI if it has been pased in
by loader.efi.
2015-05-24 16:11:30 +00:00
dchagin
ca0fda4077 In preparation for switching linuxulator to the use the native 1:1
threads add a hook for cleaning thread resources before the thread die.

Differential Revision:	https://reviews.freebsd.org/D1038
2015-05-24 14:51:29 +00:00
andrew
9bdea08264 Enable SMP on the qemu virt platform. We use the device tree to find which
cpus to enable, and PSCI to start them.
2015-05-24 12:33:12 +00:00
andrew
2b5d0cd1da Remove trailing whitespace from sys/arm/arm 2015-05-24 12:20:11 +00:00
andrew
ef95fa5a27 Add more cp15_ functions, and use them in cpufunc.c where possible. 2015-05-24 12:12:01 +00:00
andrew
b7fad84863 Include the ofw cpu driver. This allows us to get a list of cpus enabled
by qemu, however we may not be running on them.
2015-05-24 11:04:45 +00:00
ganbold
de543c1a0d Add kernel config and dts files for an aml8726-m3
based device.
Following u-boot commands allow FreeBSD boot on
Yiyate Android TV Box (aml8726-m3):

tv open 480p
mmc rescan 0
fatload mmc 0 0x80100000 kernel.bin
go 0x80100000

The current FreeBSD driver doesn't program the video
clocks so the u-boot tv command is necessary in order
for the frame buffer to be useful (otherwise it can
be skipped).

The SD card for the Yiyate Android TV Box doesn't need
anything special beyond creating a FAT16 and a UFS
filesystem.

Differential Revision:	https://reviews.freebsd.org/D2636
Submitted by:	John Wehle
2015-05-24 08:45:19 +00:00
andrew
e6b664c390 Fix a lock up where we enter swapper() with interrupts disabled.
In smp_rendezvous_cpus we expect to wait for all cpus to enter
smp_rendezvous_action. If we call this holding a proc lock swapper may
attempt to also lock it, however as interrupts are disabled the cpu never
handles the ipi. Because smp_rendezvous_action waits for all signaled
cpus before contining it may get caught waiting for the cpu running swapper
as the proc mutex will be unlocked after smp_rendezvous_cpus finishes.

The fix is to enable interrupts in the configure stage as we should be
doing.

MFC after:	1 week
2015-05-23 23:08:16 +00:00
andrew
0926af4e2a Use the wait-for-event instruction to put the core we have just enabled
to sleep while it waits to start scheduling. The boot core can then use
the send-event instruction to wake the cores when they should enter the
scheduler.

MFC after:	1 week
2015-05-23 22:28:59 +00:00
andrew
87c8fa6302 Remove an unused header. 2015-05-23 14:48:03 +00:00
imp
b8ed2d07c4 Export the eflags field from the elf header. This allows better
discrimination between different subarch binaries, at least for mips
and arm. Arm is implemented, mips is still tbd, so not currently
exported. aarch64 does not export this because aarch64 binaries use
different tags and flags than arm.

Differential Revision: https://reviews.freebsd.org/D2611
2015-05-22 20:50:35 +00:00
jkim
318c4f97e6 CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten
years for head.  However, it is continuously misused as the mpsafe argument
for callout_init(9).  Deprecate the flag and clean up callout_init() calls
to make them more consistent.

Differential Revision:	https://reviews.freebsd.org/D2613
Reviewed by:	jhb
MFC after:	2 weeks
2015-05-22 17:05:21 +00:00
andrew
6dd15cbdde Add a miibus_statchg and use it to enable Gigabit mode when appropriate.
MFC after:	1 week
2015-05-22 14:25:23 +00:00
imp
d184c1c64f Need to handle the !FDT case still too... I thought in r270025 we
wouldn't need it, but it appears that we still do for the moment...
2015-05-22 05:02:53 +00:00
gonzo
ef6ca4337d Switch TI platform support code from using FreeBSD's custom-baked DTS
files to vendor-provided ones. It should make easier to adopt platform
code to new revisions of hardware and to use DTS overlays for various
Beaglebone extensions (shields/capes).

Original dts filenames were not changed, they're now wrappers over dts
files provided by TI. So make sure you update .dtb files on your
devices as part of kernel update

GPIO addressing was changed: instead of one global /dev/gpioc0 there
are per-bank instances of /dev/gpiocX. Each bank has 32 pins so for
instance pin 121 on /dev/gpioc0 in old addressing scheme is now pin 25
on /dev/gpioc3

On Pandaboard serial console devices was changed from /dev/ttyu0 to
/dev/ttyu2 so you'll have to update /etc/ttys to get login prompt
on serial port in multiuser mode. Single user mode serial console
should work as-is

Differential Revision:	https://reviews.freebsd.org/D2146
Reviewed by:	rpaulo, ian, Michal Meloun, Svatopluk Kraus
2015-05-22 03:16:18 +00:00
loos
7b0055b310 Add the MMC/SD driver for Allwinner SoCs.
This is based on the patch sent by Alexander Fedorov with the following
fixes/improvements:

 - Better error handling;
 - Clock is derived from PLL6 (obtained from netbsd);
 - No more unnecessary busy loops on interrupt handler;
 - style(9) fixes and code cleanup.

I also want to thanks Martin Galvan who has sent an alternative
implementation with some interesting fixes.

Tested on CubieBoard2, Banana-Pi (thanks to netgate!) and Cubieboard1
(Pratik Singhal).

This is intended to pave the way for the upcoming GSoC work (and make
easier the build of images for the supported boards).

PR:		196081
Submitted by:	Alexander Fedorov <alexander.fedorov@rtlservice.com>
2015-05-21 17:39:42 +00:00
pfg
b0d837707d ddb: finish converting boolean values.
The replacement started at r283088 was necessarily incomplete without
replacing boolean_t with bool.  This also involved cleaning some type
mismatches and ansifying old C function declarations.

Pointed out by:	bde
Discussed with:	bde, ian, jhb
2015-05-21 15:16:18 +00:00
ganbold
25830cfb64 Add missing break statement.
Submitted by:	  John Wehle
2015-05-21 07:35:20 +00:00
ganbold
362feea8f3 Add driver for usbclock generator for earlier amlogic chip.
Differential Revision:	https://reviews.freebsd.org/D2590
Submitted by:		John Wehle
2015-05-21 07:23:50 +00:00
ganbold
7ba604ed02 Remove unnecessary break statements.
Submitted by:	   John Wehle
2015-05-21 07:09:01 +00:00
ganbold
49816e77e6 The RTC initialization values are based on the SoC which can be
determined at runtime so there's no need to set the values in
each DTS.
Tested on YYHD18 (aml8726-m3), VSATV102 (aml8726-m6), and
ODROIDC1 (aml8726-m8b).

Differential Revision:	https://reviews.freebsd.org/D2588
Submitted by:		John Wehle
2015-05-21 07:01:08 +00:00
rpaulo
771edc321d ti_pruss: pass the correct IRQ to userland.
Also, fix several problems with the kqueue notification.

Submitted by:	Manuel Stühn freebsdnewbie at freenet.de
2015-05-20 06:23:01 +00:00
ganbold
94ef49c616 D2432 (Patch for Amlogic single core PIC) moved the SMP option out
of AML8726 and into board specific config files since some boards
(e.g. YYHD18) use the aml8726-m3 which only have a single core.

r283057 applied most of D2432, however while it removed SMP from
AML8726, it missed adding the SMP option to the board specific
config files.

Differential Revision:	https://reviews.freebsd.org/D2589
Submitted by:	John Wehle
2015-05-20 05:49:52 +00:00
imp
81ce9ac634 Add NFS server to mix (for easier, in-place updates). Move to
partition 2 for root (since partition 1 is reserved for FAT
files the Atmel ROMs can load).
2015-05-19 21:16:51 +00:00
imp
006efe474f Improve comment about unmapped I/O and fix typos.
Submitted by: Matteo Riondato
MFC After: 2 days
2015-05-19 21:16:37 +00:00
br
b1f1f07fae Add Performance Monitoring Counters support for AArch64.
Family-common and CPU-specific counters implemented.

Supported CPUs: ARM Cortex A53/57/72.

Reviewed by:	andrew, bz, emaste, gnn, jhb
Sponsored by:	ARM Limited
Differential Revision:	https://reviews.freebsd.org/D2555
2015-05-19 15:25:47 +00:00
loos
5b966400f9 Remove unnecessary devices from allwinner kernels. 2015-05-18 18:25:38 +00:00
andrew
6e5ae8ed22 Clean up the Amlogic interrupt controller driver to handle the case where
we have both the Amlogic pic and a GIC. This may be the case in some
configurations.

Differential Revision:	https://reviews.freebsd.org/D2432
Submitted by:	John Wehle <john@feith.com>
2015-05-18 11:04:07 +00:00
andrew
b5287aa31b Clean up the style to be "include<space><tab>" and remove options already
in std.armv6.
2015-05-18 08:12:08 +00:00
andrew
43523cb7d2 Clean up struct syscall_args:
1. Align to a 64-bit address so 64-bit data will be correctly aligned.
 2. Add a comment explaining why.
 3. Remove an unneeded value from the struct.

This fixes an issue where the struct may not be correctly aligned on the
stack in the syscall function. This may lead to accesing a 64-bit value
at a non 64-bit. This will raise an exception and panic the kernel.

We have been lucky where on arm and armv6 both clang and gcc correctly
align the data, even without us asking to, however, on armeb with clang to
not be the case. This tells the compiler we really do need this to be
aligned.

Reported and tested by:	jmg (on armeb with clang)
MFC after:	1 Week [1, 2]
2015-05-17 18:35:58 +00:00
ian
c3254c15f9 Do not set preload_addr_relocate for ARM. Apparently there was a time
when loader(8) passed physical addresses in loader metadata for arm, but
that is no longer true; all metadata has already been adjusted to vitual
addresses by loader.

I can't track down the exact revision in loader where a change from physical
to virtual metadata addresses happened.  The code involved is very twisty
and complicated.  I suspect the change was an unintended consequence of the
r247301, r247413, r248118 series of changes I made a couple years ago.
2015-05-17 17:03:37 +00:00
imp
545ec37cd0 Don't allow unmapped I/O. The pmap isn't quite up to the task. Add a
comment to this effect and switch the default. My old AT91SAM9G20
now boots, fsck's the SD card and runs w/o an issue for the first
time since a 9.1-ish stable build I did a few years ago.

Problems with unmapped I/O:
o un-page-aligned I/O requests to devices fail (notably fsck
  and newfs).
o write-back caching was totally broken. write-through caching
  needed to be enabled.
o Even page-aligned I/O requests sometimes failed for reasons
  not thoroughly investigated.

Suggested by: ian@
MFC after: 2 days
2015-05-16 21:24:32 +00:00
bz
c39608f065 More tr -d '\r' t make config happy and
some re-alignment whitespace changes.
2015-05-16 20:04:49 +00:00
bz
fbf8dff618 tr -d '\r' makes config a lot more happy. 2015-05-16 10:27:27 +00:00
zbb
a03bdb9d16 Introduce support for the Alpine PoC from Annapurna Labs
The Alpine Platform-On-Chip offers multicore processing
(quad ARM Cortex-A15), 1/10Gb Ethernet, SATA 3, PCI-E 3,
DMA engines, Virtualization, Advanced Power Management and other.

This code drop involves basic platform support including:
SMP, IRQs, SerDes, SATA. As of now it is missing the PCIe support.
Part of the functionality is provided by the low-level code (HAL)
delivered by the chip vendor (Annapurna Labs) and is a subject to
change in the future (is planned to be moved to sys/contrib directory).

The review log for this commit is available here:
https://reviews.freebsd.org/D2340

Reviewed by:    andrew, ian, imp
Obtained from:  Semihalf
Sponsored by:   Annapurna Labs
2015-05-15 18:25:48 +00:00
ian
ff64c3f311 Add assertions that the addresses passed to tlb maintenance are page-aligned.
Perform cache writebacks and invalidations in the correct (inner to outer
or vice versa) order, and add comments that explain that.

Consistantly use 'va' as the variable name for virtual addresses.

Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-05-15 18:10:00 +00:00
ian
fc794c706b Retrieve the cache parms in the proper arch-specific way.
Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-05-15 18:07:58 +00:00
ganbold
7623d151d8 It appears to be armv7_sleep is a duplication of armv7_cpu_sleep.
For consistency with the naming conventions used by the other
implementations kill armv7_sleep and keep armv7_cpu_sleep.

Differential Revision:	https://reviews.freebsd.org/D2537
Submitted by:	John Wehle
Reviewed by:	ian@, andrew@
2015-05-15 00:39:51 +00:00
ganbold
5cfb29320a Delete cpu_do_powersave which is set but never used/tested
serving no useful purpose.

Differential Revision:	https://reviews.freebsd.org/D2516
Submitted by:		John Wehle
Reviewed by:		ian@
2015-05-13 05:46:04 +00:00
loos
1aadf4978f Fix the vmstat -i output on ARM.
The consumers of hw.intrnames expect a NULL byte at end of the string
containing the interrupt names.

On ARM all the interrupt name slots are initialized and this leave no room
for the terminating NULL byte, which makes vmstat read beyond the end of
intrnames.

PR:		199891
Tested on:	RPi 2 and BeagleBone Black
2015-05-13 02:25:54 +00:00
loos
e5dea16a76 Fix the SMP initialization on RPi 2 (BCM2836).
Invalidate the CPU cache before start the others CPUs.

Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-05-13 01:48:47 +00:00
loos
249a98951b Add support for the power button on BeagleBone Black.
Shutdown and turn off the board when the power button is pressed.

Submitted by:	Michal Meloun <meloun@miracle.cz>
Relnotes:	yes
2015-05-13 01:10:28 +00:00
ganbold
c809908d6a Disable WPI in case of aml8726-m3.
The aml8726-m3 SoC is identified as a Cortex A9-r2 rev 4 CPU and
it hangs sometimes during the boot when WFI is used by the kernel.

Differential Revision:	  https://reviews.freebsd.org/D2473
Submitted by:		  John Wehle
Suggested by:		  ian@
2015-05-12 08:53:54 +00:00
alc
e4e7fd4992 Retire pmap_lazyfix(). This function only existed in the new armv6 pmap
because the i386 pmap on which the new armv6 pmap is based had it, and in
r281707 pmap_lazyfix() was removed from the i386 pmap.

Discussed with:	kib
Submitted by:	Michal Meloun (via Svatopluk Kraus)
2015-05-11 19:55:01 +00:00
andrew
28058b62b6 Add the kernel support for Thumb-2. It is only supported on ARMv7 as the
main ARMv6 target, the Raspberry Pi, doesn't support Thumb-2.

This as been tested with a Thumb-2 userland, however building one is
currently unsupported as there are known toolchain issues breaking some
binaries. Further work will also be needed to decide on the method of
selecting which instruction set to build for, and to benchmark both to
find how building everything as Thumb-2 will affect performance.

Relnotes:	yes
2015-05-11 19:20:30 +00:00
andrew
7bb734e44d Mark thumb entry points as such when building for thumb, otherwise mark
them as arm.
2015-05-11 19:04:32 +00:00
andrew
86910dabc1 Use the Thumb compliant version of the add instruction. We can only use
"add Rd, Rn, Rm" from within an IT (if-then) block.
2015-05-11 19:00:02 +00:00
andrew
82ba7e94e9 List both registers to use in the 64-bit atomic instructions. We will need
these to build for Thumb-2.
2015-05-11 18:52:06 +00:00
andrew
79d8402976 cpu-v6.h should only be used in the kernel, add an error to enforce this. 2015-05-11 12:44:02 +00:00
andrew
4b7c07e495 Move to use __ARM_ARCH in more places in the kernel. 2015-05-11 08:57:23 +00:00
andrew
cfa2488236 Use the ACLE spelling of _ARM_ARCH_6: "__ARM_ARCH >= 6" 2015-05-11 08:51:24 +00:00
andrew
502d4577e2 Use the new gic option on all configs that need it. 2015-05-10 12:13:27 +00:00
andrew
f3f09aac45 Use the new gic option. While here remove extra whitespace from the ned of
a few lines.
2015-05-10 09:37:54 +00:00
andrew
599ec55705 Add the gic to files.arm under "device gic" and use it with the
CUBIEBOARD2 config. This is common across a few SoCs so should be a common
option.
2015-05-10 09:33:03 +00:00
andrew
dc69de53bf First pass clenup over the Marvell db-88f6xxx kernel configs. 2015-05-10 09:23:49 +00:00
andrew
00145bc0e0 Clean up the style to use "options<space><tab>". 2015-05-10 08:48:00 +00:00
andrew
98c05d3447 Pass over the at91 kernels to reduce the diff between them. 2015-05-09 21:24:55 +00:00
gjb
fb117627f6 Merge ^/projects/release-arm-redux into ^/head.
Of note:

- This commit adds native FreeBSD/arm release build support without
  requiring out-of-tree utilities.

- Part of this merge removes the WANDBOARD-{SOLO,DUAL,QUAD} kernel
  configuration files, for which the IMX6 kernel configuration file
  should be used instead.

- The resulting images have a 'freebsd' user (password 'freebsd'),
  to allow ssh(1) access when console access is not available (VGA
  or serial).  The default 'root' user password is set to 'root'.

- The /etc/ttys file for arm images now enable both ttyv0 and ttyu0
  by default.

Help from:	many (boot testing, feedback, etc.)
Sponsored by:	The FreeBSD Foundation
2015-05-09 21:08:12 +00:00
loos
904b0d8a17 Pass the resources requests to the upper bus.
Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-05-09 03:39:18 +00:00
gjb
6c40325758 Use the IMX6 kernel configuration for the WANDBOARD build,
since it supports all of these board variants.

While here, remove the WANDBOARD-{QUAD,SOLO,DUAL} kernel
configuration files.

Discussed with:	ian
Sponsored by:	The FreeBSD Foundation
2015-05-08 18:55:09 +00:00
ganbold
abdb69af4a This follows the gic and ti/aintc code by adding additional barriers to the
Amlogic pic driver.

Differential Revision:	https://reviews.freebsd.org/D2472
Submitted by:		John Wehle
2015-05-08 04:38:01 +00:00
loos
f5a1c0d084 Add the SMP support for Raspberry Pi 2 (BCM2836).
Tested with the build of some ports and a buildworld.

Submitted by:	Daisuke Aoyama <aoyama@peach.ne.jp>
2015-05-07 22:11:44 +00:00
emaste
5184251d09 Correct PL310_POWER_CTRL offset
Offet for the power control register was specified incorrectly (it had
the same value as the prefetch control register.) This change corrects
the offset value to 0xF80, per the ARM PL310 documentation.

Submitted by:	Steve Kiernan <stevek@juniper.net>
Obtained from:	Juniper Networks, Inc.
2015-05-07 16:56:20 +00:00
andrew
b87b82a356 Clean up the ARM kernel configs to use 'include<space><tab>"file"'. 2015-05-07 12:38:23 +00:00
zbb
ff39bdf1b1 Add new CP15 operations and DB_SHOW_COMMAND to print CP15 registers
Submitted by:   Wojciech Macek <wma@semihalf.com>
Reviewed by:    imp, Michal Meloun <meloun@miracle.cz>
Obtained from:  Semihalf
2015-05-06 15:17:28 +00:00
ganbold
02901aa905 This patch adds support for the extended baud rate register
available on the aml8726-m6 (and later) SoC which allows for
lower speeds.

Differential Revision:	https://reviews.freebsd.org/D2433
Submitted by:	John Wehle
2015-05-06 01:07:59 +00:00
ian
c56bc9560b Add the code necessary to run the imx6 chip at its lowest clock/power
operating point (396MHz/950mV).
2015-05-05 23:27:49 +00:00
andrew
52414b5316 Start to reduce the diff between the Atmel kernel configs. 2015-05-05 18:29:51 +00:00
andrew
6570ab41ce The VIRT kernel config targets armv6. 2015-05-05 18:04:47 +00:00