Commit Graph

5047 Commits

Author SHA1 Message Date
Dimitry Andric
30882a7c88 Work around new clang 10.0.0 -Werror warning:
sys/arm/allwinner/aw_cir.c:208:41: error: converting the result of '<<' to a boolean; did you mean '((1 & 255) << 23) != 0'? [-Werror,-Wint-in-bool-context]
        active_delay = (AW_IR_ACTIVE_T + 1) * (AW_IR_ACTIVE_T_C ? 128 : 1);
                                               ^
sys/arm/allwinner/aw_cir.c:130:39: note: expanded from macro 'AW_IR_ACTIVE_T_C'
#define AW_IR_ACTIVE_T_C                ((1 & 0xff) << 23)
                                                    ^

Add the != 0 part to indicate that we indeed want to compare against
zero.
2020-02-17 18:37:15 +00:00
Ian Lepore
39c614c6b7 Implement atomic_testandclear_{32,int,long} for 32-bit arm. Also, replace
the existing implementation of atomic_testandset with the same new algorithm,
which uses fewer instructions and fewer registers.
2020-02-10 00:05:04 +00:00
Mark Johnston
c3d326fd44 Define MAXCPU consistently between the kernel and KLDs.
This reverts r177661.  The change is no longer very useful since
out-of-tree KLDs will be built to target SMP kernels anyway.  Moveover
it breaks the KBI in !SMP builds since cpuset_t's layout depends on the
value of MAXCPU, and several kernel interfaces, notably
smp_rendezvous_cpus(), take a cpuset_t as a parameter.

PR:		243711
Reviewed by:	jhb, kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23512
2020-02-05 19:08:21 +00:00
Ed Maste
690a8a6acd regen linuxulator sysent after r357577 2020-02-05 16:54:16 +00:00
Ed Maste
fc7510aef7 linuxulator: implement sendfile
Submitted by:	Bora Özarslan <borako.ozarslan@gmail.com>
Submitted by:	Yang Wang <2333@outlook.jp>
Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D19917
2020-02-05 16:53:02 +00:00
Warner Losh
c312e0f43b Kill old armv4 busdma
Move to having one busdma option for arm: the armv6/v7 one.
Kill now-unused option ARM_USE_V6_BUSDMA too.
Fixup files.arm to match rename.
2020-02-02 08:27:14 +00:00
Warner Losh
6b29cf3343 Move arm back to having one LINT
Now that armv5 is gone, we no longer need multiple LINT files. Kill
the odd-ball support here. From now on, we just have LINT built from
notes like all the other platforms. Keep the removal of LINT-V5/7
to remove stale files for a while still..
2020-02-02 08:27:08 +00:00
Warner Losh
bf19e5b9ee Remove old boardid/mach-types support.
This has been long obsolete in linux and now that all armv4/5 support
is gone, it can be retired too.
2020-02-02 06:52:10 +00:00
Warner Losh
ff9efce0ba Remove armv5 marvell support.
Per plans to remove armv5 support, remove the armv5 marvell discovery,
kirkwood and orion families.
2020-02-02 06:52:04 +00:00
Warner Losh
20d4864396 Remove Ralink RT1310 support
This armv5 SoC is being removed consistent with the removal of
armv5 support, per discussions in arm@ mailing list.
2020-02-02 06:51:42 +00:00
Mark Johnston
1c29da0279 Reimplement stack capture of running threads on i386 and amd64.
After r355784 the td_oncpu field is no longer synchronized by the thread
lock, so the stack capture interrupt cannot be delievered precisely.
Fix this using a loop which drops the thread lock and restarts if the
wrong thread was sampled from the stack capture interrupt handler.

Change the implementation to use a regular interrupt instead of an NMI.
Now that we drop the thread lock, there is no advantage to the latter.

Simplify the KPIs.  Remove stack_save_td_running() and add a return
value to stack_save_td().  On platforms that do not support stack
capture of running threads, stack_save_td() returns EOPNOTSUPP.  If the
target thread is running in user mode, stack_save_td() returns EBUSY.

Reviewed by:	kib
Reported by:	mjg, pho
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23355
2020-01-31 15:43:33 +00:00
Warner Losh
8c7cd14adf Create a convenince wrapper to fill in a CAM_PATH_INQ request for MMC sims. Pass
in the parameters needed for the different sims, but it's almost all identical.
2020-01-27 22:19:55 +00:00
Emmanuel Vadot
2de9b4d347 zilinx/zy7_qspi: Add a qspi driver for Zynq platforms.
This is a qspi driver for the Xilinx Zynq-7000 chip.
It could be useful for anyone wanting to boot a system from flash memory
instead of SD cards.

Submitted by:	Thomas Skibo (thomasskibo@yahoo.com)
Differential Revision:	https://reviews.freebsd.org/D14698
2020-01-19 20:04:44 +00:00
Emmanuel Vadot
0fe5379c6a arm: allwinner: Add GPIO Interrupt support
Not all pins in Allwinner have interrupts support so we rely
on the padconf data to add the proper caps when pin_getcaps is called.
The pin is switch to the specific "eint" function during setup_intr and
switched back to its old function in teardown_intr.
Only INTR_MAP_DATA_GPIO is supported for now.

MFC after:	1 month
2020-01-19 19:51:20 +00:00
Emmanuel Vadot
d07cc22b30 arm: allwinner: Fix padconf for interrupts information
Add a eint_bank member to the allwinner_pins structure.
On Allwinner SoCs not all pins can do interrupt.
Older SoC (A10/A13 and A20) there is a maximum number of interrupts
set to 32 and all the configuration is done in the same registers.
While on "newer" SoCs (>=A31) interrupts registers are splitted per
pin bank (i.e. all interrupts available in bank B will be configured
with a sets of registers and the one in bank G in another set).
While here set the names to all interrupts function to
pX_eintY where X is the bank name and Y the interrupt number.

To whom ever in the future look at the H5 manual and notice that the bank F
have interrupts support : This isn't true, trust me.

MFC after:	1 month
2020-01-19 19:14:49 +00:00
Kyle Evans
05d7dd739c sysent targets: further cleanup and deduplication
r355473 vastly improved the readability and cleanliness of these Makefiles.
Every single one of them follows the same pattern and duplicates the exact
same logic.

Now that we have GENERATED/SRCS, split SRCS up into the two parameters we'll
use for ${MAKESYSCALLS} rather than assuming a specific ordering of SRCS and
include a common sysent.mk to handle the rest. This makes it less tedious to
make sweeping changes.

Some default values are provided for GENERATED/SYSENT_*; almost all of these
just use a 'syscalls.master' and 'syscalls.conf' in cwd, and they all use
effectively the same filenames with an arbitrary prefix. Most ABIs will be
able to get away with just setting GENERATED_PREFIX and including
^/sys/conf/sysent.mk, while others only need light additions. kern/Makefile
is the notable exception, as it doesn't take a SYSENT_CONF and the generated
files are spread out between ^/sys/kern and ^/sys/sys, but it otherwise fits
the pattern enough to use the common version.

Reviewed by:	brooks, imp
Nice!:		emaste
Differential Revision:	https://reviews.freebsd.org/D23197
2020-01-18 20:37:45 +00:00
Kyle Evans
ac64d0f1ea bcm2835_vcbus: unifdef all platform definitions
Raspberry Pi are all over the board, and the reality is that there's no harm
in including all of the definitions by default but plenty of harm in the
current situation. This change is safe because we match a definition by root
/compatible in the FDT, so there will be no false-positives because of it.

The main array of definitions grows, but it's only walked exactly once to
determine which we need to use.
2020-01-17 21:39:28 +00:00
Emmanuel Vadot
2fbeda2aef arm: allwinner: ahci: target-supply is optional
The target-supply regulator is optional so don't fail if it's not present.
While here disable the clock on detach.

MFC after:	2 weeks
X-MFC-With:	356600
2020-01-16 20:19:20 +00:00
Emmanuel Vadot
96c7e7f427 arm: allwinner: Add support for bank supply
Each GPIO bank is powered by a different pin and so can be powered at different
voltage from different regulators.
Add a new config that now hold the pinmux data and the banks available on each
SoCs.
Since the aw_gpio driver being also the pinmux one it's attached before the PMIC
so add a config_intrhook_oneshot function that will enable the needed regulators
when the system is fully functional.

MFC after:	2 weeks
2020-01-16 20:02:41 +00:00
Emmanuel Vadot
5fcd039b3f axp8xx: Add a regnode_init method
This method will set the desired voltaged based on values in the DTS.
It will not enable the regulator, this is the job of either a consumer
or regnode_set_constraint SYSINIT if the regulator is boot_on or always_on.

MFC after:	2 weeks
2020-01-16 19:59:00 +00:00
Emmanuel Vadot
194840a170 axp8xx: Add missing voltage regulators offset
This lead to writing the desired voltage value to the wrong register.

MFC after:	2 weeks
2020-01-16 19:57:38 +00:00
Mateusz Guzik
879e0604ee Add KERNEL_PANICKED macro for use in place of direct panicstr tests 2020-01-12 06:07:54 +00:00
Emmanuel Vadot
ca4387843e arm: allwinner: axp209: Add regnode_status method
This allow consumers to check if the regulator is enable or not.

MFC after:	1 week
2020-01-10 18:53:14 +00:00
Kyle Evans
1171c633fb Set .ORDER for makesyscalls generated files
When either makesyscalls.lua or syscalls.master changes, all of the
${GENERATED} targets are now out-of-date. With make jobs > 1, this means we
will run the makesyscalls script in parallel for the same ABI, generating
the same set of output files.

Prior to r356603 , there is a large window for interlacing output for some
of the generated files that we were generating in-place rather than staging
in a temp dir. After that, we still should't need to run the script more
than once per-ABI as the first invocation should update all of them. Add
.ORDER to do so cleanly.

Reviewed by:	brooks
Discussed with:	sjg
Differential Revision:	https://reviews.freebsd.org/D23099
2020-01-10 18:24:17 +00:00
Kyle Evans
3898f9bdb3 a10_ahci: grab the target-supply regulator and enable it
This regulator is marked regulator-boot-on, but it will get shutdown if it's
not actually used/enabled by a driver. This should fix sata on the
cubieboard{1,2}.

Reported by:	Ray White @ UWaterloo
Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D23112
2020-01-10 14:09:59 +00:00
Kyle Evans
d2ccf385fd bcm2835_vcbus: hide 'checking root' messages under bootverbose 2020-01-09 19:13:09 +00:00
Ryan Libby
54c5ae804f uma: reorganize flags
- Garbage collect UMA_ZONE_PAGEABLE & UMA_ZONE_STATIC.
 - Move flag VTOSLAB from public to private.
 - Introduce public NOTPAGE flag and make HASH private.
 - Introduce public NOTOUCH flag and make OFFPAGE private.
 - Update man page.

The net effect of this should be to make the contract with clients more
clear.  Clients should choose constraints, UMA will figure out how to
implement them.  This also breaks the confusing double meaning of
OFFPAGE.

Reviewed by:	jeff, markj
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D23016
2020-01-09 02:03:03 +00:00
Ian Lepore
9a1d4b0012 Add #ifdef option-test wrappers around another call to an arm/unwind.c
function which is only compiled-in with certain options.

Why is it always the most trivial part of a big commit that takes 3 tries
to get right?
2020-01-07 21:13:34 +00:00
Ian Lepore
fce985b0bd Add the xdma framework and pl330 dma drivers to arm and arm64 lint builds. 2020-01-02 22:26:54 +00:00
Emmanuel Vadot
950beb0bc2 arm: allwinner: aw_spi: Call bus_generic_attach
This is needed when the driver is compiled into the kernel.
When compiled as a module this will be called from another
code path as we also depend on ofw_spibus.

MFC after:	1 week
2020-01-02 17:39:21 +00:00
Ian Lepore
e0f07fadf6 Since arm/unwind.c s conditionally compiled, only call functions in it
when one of those conditions is true.  Fixes build failure on kernel
configs with no debugging options active.
2020-01-02 15:38:17 +00:00
Warner Losh
3fa3fbdedf Remove NOTES.armv5. It's no longer relevant. 2020-01-02 03:25:32 +00:00
Edward Tomasz Napierala
0c80ec6dfa Regen after r356233.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2019-12-31 16:07:12 +00:00
Edward Tomasz Napierala
79ae56a772 Sigh, add getcpu(2) chunk missed in r356229.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2019-12-31 16:05:07 +00:00
Ian Lepore
140da6f8fe Set a "kernbase" symbol in 32-bit arm locore.S and use it with ldscript.arm.
This brings arm into line with how every other arch does it.  For some
reason, only arm lacked a definition of a symbol named kernbase in its
locore.S file(s) for use in its ldscript.arm file.  Needlessly different
means harder to maintain.

Using a common symbol name also eases work in progress on a script to help
generate arm and arm64 kernels packaged in various ways (like with a header
blob needed for a bootloader prepended to the kernel file).
2019-12-30 23:20:46 +00:00
Kyle Evans
06b367b2b6 sc(4) md bits: stop setting sc->kbd entirely
The machdep parts no longer need to touch keyboard parts after r356043;
sc->kbd will be 0-initialized and this works as expected.
2019-12-30 02:07:55 +00:00
Luiz Otavio O Souza
18346de0cc Initialize the bounce pages list in armv[4|6] DMA maps.
Fixes the crash on the first use of STAILQ_INSERT_TAIL() in
add_bounce_page().

Sponsored by:	Rubicon Communications, LLC (Netgate)
2019-12-24 23:43:29 +00:00
Brandon Bergren
7821a820d0 [PowerPC] Implement Secure-PLT jump table processing for ppc32.
Due to clang and LLD's tendency to use a PLT for builtins, and as they
don't have full support for EABI, we sometimes have to deal with a PLT in
.ko files in a clang-built kernel.

As such, augment the in-kernel linker to support jump table processing.

As there is no particular reason to support lazy binding in kernel modules,
only implement Secure-PLT immediate binding.

As part of these changes, add elf_cpu_parse_dynamic() to the MD API of the
in-kernel linker (except on platforms that use raw object files.)

The new function will allow MD code to act on MD tags in _DYNAMIC.

Use this new function in the PowerPC MD code to ensure BSS-PLT modules using
PLT will be rejected during insertion, and to poison the runtime resolver to
ensure we get a clear panic reason if a call is made to the resolver.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D22608
2019-12-24 15:56:24 +00:00
Scott Long
757d4fbaa7 Introduce the concept of busdma tag templates. A template can be allocated
off the stack, initialized to default values, and then filled in with
driver-specific values, all without having to worry about the numerous
other fields in the tag. The resulting template is then passed into
busdma and the normal opaque tag object created.  See the man page for
details on how to initialize a template.

Templates do not support tag filters.  Filters have been broken for many
years, and only existed for an ancient make/model of hardware that had a
quirky DMA engine.  Instead of breaking the ABI/API and changing the
arugment signature of bus_dma_tag_create() to remove the filter arguments,
templates allow us to ignore them, and also significantly reduce the
complexity of creating and managing tags.

Reviewed by:	imp, kib
Differential Revision:	https://reviews.freebsd.org/D22906
2019-12-24 14:48:46 +00:00
Kyle Evans
117deb3fc4 sc: fix arm/mips/sparc64 MD bits
r356043 missed a couple of references in machdep parts... arguably, these
lines could probably be dropped as the softc is likely still zero'd at this
point.

Pointy hat:	kevans
2019-12-23 21:41:04 +00:00
Kyle Evans
db41cd0e06 Kill off dummy kbd drivers
As far as I can tell, these are an artifact of times when linker sets
couldn't be empty, otherwise the kernel build would fail due to unresolved
symbols. hselasky fixed this in r268138, and I've audited the kbd portions
to make sure nothing would blow up due to the empty linker set and
successfully compiled+ran a kernel with no keyboard support at all.

Kill them off now since they're no longer required.

MFC after:	1 week
2019-12-20 16:22:14 +00:00
Kyle Evans
2dfc696ef1 VERSATILEPB: Unbreak after r355796
r355796 provided genkbd_get_fkeystr/genkbd_diag private and the default for
get_fkeystr/diag if these members are NULL. Follow suit here.
2019-12-20 15:28:40 +00:00
Kyle Evans
32a44e1e53 bcm2835_vcbus: add legacy compat mappings
I've opted for just duplicating the two entries needed for this, rather than
writing any other mechanism for maintaining two root compat entries to map
to one config, for simplicity. We'll eventually declare these legacy DTB
unsupported, but let's not do that yet while there's no real burden.
2019-12-18 02:29:27 +00:00
Kyle Evans
850dd7e9cd arm: add SOC_BRCM_BCM2837 option, include it in GENERIC
We use armv7/GENERIC for the RPI2 images. The original RPI2 is actually a
32-bit BCM2836, but v1.2 was upgraded to the 64-bit BCM2837. The project
continues to provide the RPI2 image as armv7, as it's the lowest common
denominator of the two. Historically, we've just kind of implicitly
acknowledged this by including some bcm2837 bits on a SOC_BCM2836 kernel
config -- this worked until r354875 added code that actually cared.

Acknowledge formally that BCM2837 is valid in arm32.

This name is inconsistent with the other BCM* SOC on !arm64 for two reasons:

1. It's a pre-existing option on arm64, and
2. the naming convention on arm/ should've arguably changed to include BRCM

#1 seems to be a convincing enough argument to maintain the existing name
for it.
2019-12-17 23:01:37 +00:00
Ian Lepore
a856c60bdd Remove unnecessary MODULE_DEPEND() from imx_i2c.c, and also from rk_i2c
where it got copied to.
2019-12-17 17:03:03 +00:00
Jeff Roberson
a94ba188c3 Repeat the spinlock_enter/exit pattern from amd64 on other architectures to
fix an assert violation introduced in r355784.  Without this spinlock_exit()
may see owepreempt and switch before reducing the spinlock count.  amd64
had been optimized to do a single critical enter/exit regardless of the
number of spinlocks which avoided the problem and this optimization had
not been applied elsewhere.

Reported by:	emaste
Suggested by:	rlibby
Discussed with:	jhb, rlibby
Tested by:	manu (arm64)
2019-12-16 20:15:04 +00:00
Kyle Evans
f00bf028b6 chrome_kb: remove default get_fkeystr/diag implementations
This file was missed in r355796, but no harm would have come from this.
2019-12-16 03:05:35 +00:00
Kyle Evans
4434de9643 kbd drivers: use kbdd_* indirection for diag invocation
These invocations were directly calling enkbd_diag(), rather than
indirection back through kbdd_diag/kbdsw. While they're functionally
equivent, invoking kbdd_diag where feasible (i.e. not in a diag
implementation) makes it easier to visually identify locking needs in these
other drivers.
2019-12-16 01:37:03 +00:00
Ian Lepore
b19c9dea3e Rewrite arm kernel stack unwind code to work when unwinding through modules.
The arm kernel stack unwinder has apparently never been able to unwind when
the path of execution leads through a kernel module. There was code that
tried to handle modules by looking for the unwind data in them, but it did
so by trying to find symbols which have never existed in arm kernel
modules. That caused the unwind code to panic, and because part of panic
handling calls into the unwind code, that just created a recursion loop.

Locating the unwind data in a loaded module requires accessing the Elf
section headers to find the SHT_ARM_EXIDX section. For preloaded modules
those headers are present in a metadata blob. For dynamically loaded
modules, the headers are present only while the loading is in progress; the
memory is freed once the module is ready to use. For that reason, there is
new code in kern/link_elf.c, wrapped in #ifdef __arm__, to extract the
unwind info while the headers are loaded. The values are saved into new
fields in the linker_file structure which are also conditional on __arm__.

In arm/unwind.c there is new code to locally cache the per-module info
needed to find the unwind tables. The local cache is crafted for lockless
read access, because the unwind code often needs to run in context where
sleeping is not allowed.  A large comment block describes the local cache
list, so I won't repeat it all here.
2019-12-15 21:16:35 +00:00
Edward Tomasz Napierala
0cde2b3239 Regen after r355752.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D22371
2019-12-14 13:32:37 +00:00