Freescale added the E.D profile to e500mc and derivative cores. From
Freescale's EREF reference manual this is enabled by a bit in HID0 and should
otherwise default to traditional debug. However, none of the Freescale cores
support that bit, and instead always use E.D. This results in kernel panics
using the standard debug on e500mc+ cores.
Enhanced debug allows debugging of interrupts, including critical interrupts,
as it uses a different save/restore registers (srr*). At this time we don't use
this ability, so instead share the core of the debug handler code between both
handlers.
MFC after: 3 weeks
The desired behavior of atomic_fcmpset_() is to always exit on error. Instead
of retrying on lost reservation, leave the retry to the caller, and return
error.
Reported by: kib
There are no alternatives defined, so there's no point in keeping them. Also,
they weren't around every inline asm block anyway. Without __GNUCLIKE_ASM
defined, the guarded functions return garbage.
Reported by: Andrew Thompson
Summary:
Clang throws the following warning in powerpc intr_machdep:
/usr/src/sys/powerpc/powerpc/intr_machdep.c:454:15: warning: comparison of
constant -1 with expression of type 'enum intr_trigger' is always false
[-Wtautological-constant-out-of-range-compare]
if (i->trig == -1)
~~~~~~~ ^ ~~
This may lead to legitimate problems with aggressive optimizations, if not now
then in the future. To avoid this, add a new enum, INTR_TRIG_INVALID, set to
-1, and use this new enumeration in these checks.
Test Plan: Compile test.
Reviewed By: jhb, kib
Differential Revision: https://reviews.freebsd.org/D9300
Summary:
atomic_fcmpset_*() is analogous to atomic_cmpset(), but saves off the read value
from the target memory location into the 'old' pointer in the case of failure.
Requested by: mjg
Differential Revision: https://reviews.freebsd.org/D9325
Building kernel with devel/powerpc64-gcc (6.2.0) yields the following error:
/usr/src/sys/powerpc/powerpc/db_trace.c:299:20: error: calling
'__builtin_frame_address' with a nonzero argument is unsafe
[-Werror=frame-address]
Work around this by dereferencing the frame address manually instead.
PR: 215600
Reported by: Mark Millard <markmi AT dsl-only DOT net>
MFC after: 2 weeks
Clang apparently requires the explicit form of this instruction, and rejects
uses which ignore the optional cmpD register. This was the only use of the
shorthand form of the instruction, so just fix it up to match the others.
PR: kern/215681
Submitted by: Mark Millard
Reported by: Mark Millard <markmi _AT_ dsl-only.net>
MFC after: 2 weeks
- em(4) igb(4) and lem(4)
- deprecate the igb device from kernel configurations
- create a symbolic link in /boot/kernel from if_em.ko to if_igb.ko
Devices tested:
- 82574L
- I218-LM
- 82546GB
- 82579LM
- I350
- I217
Please report problems to freebsd-net@freebsd.org
Partial review from jhb and suggestions on how to *not* brick folks who
originally would have lost their igbX device.
Submitted by: mmacy@nextbsd.org
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Limelight Networks and Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8299
There are places where checks are made against VM_MAX_KERNEL_ADDRESS, or
virtual_end (set to VM_MAX_KERNEL_ADDRESS). With 32-bit checks, an address will
always be less than or equal to 0xffffffff. Drop a page, so those checks can
terminate loops safely.
The sim_vid, hba_vid, and dev_name fields of struct ccb_pathinq are
fixed-length strings. AFAICT the only place they're read is in
sbin/camcontrol/camcontrol.c, which assumes they'll be null-terminated.
However, the kernel doesn't null-terminate them. A bunch of copy-pasted code
uses strncpy to write them, and doesn't guarantee null-termination. For at
least 4 drivers (mpr, mps, ciss, and hyperv), the hba_vid field actually
overflows. You can see the result by doing "camcontrol negotiate da0 -v".
This change null-terminates those fields everywhere they're set in the
kernel. It also shortens a few strings to ensure they'll fit within the
16-character field.
PR: 215474
Reported by: Coverity
CID: 1009997 1010000 1010001 1010002 1010003 1010004 1010005
CID: 1331519 1010006 1215097 1010007 1288967 1010008 1306000
CID: 1211924 1010009 1010010 1010011 1010012 1010013 1010014
CID: 1147190 1010017 1010016 1010018 1216435 1010020 1010021
CID: 1010022 1009666 1018185 1010023 1010025 1010026 1010027
CID: 1010028 1010029 1010030 1010031 1010033 1018186 1018187
CID: 1010035 1010036 1010042 1010041 1010040 1010039
Reviewed by: imp, sephe, slm
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D9037
Differential Revision: https://reviews.freebsd.org/D9038
When importing for r309309, as part of conflict resolution, too much extra was
removed, resulting in bad disassembly for branches. Correct this.
Also re-apply the 0->NULL change from r298052.
X-MFC-With: r309309
Before this, it would cause the one consumer of this API in powerpc usage
(dev/dpaa) to set the PTE WIMG flags to empty instead of --M-, making the
cache-enabled buffer portals non-coherent.
Bring in the most recent copy of NetBSD's db_disasm, to fix bugs and add more
instructions.
* Fix several bugs in the disassembler, most notably the disassembly of the
rlwi* instructions, the original reason for bringing in this change.
* Add more registers to the SPR list
* Add more instructions to the opcode table
Obtained from: NetBSD
MFC after: 2 weeks
MPC750 User Manual Errata (rev 1) adds a note to C.4.2.2 noting that mtsr,
mtsrin, and mtmsr all require a isync after the instruction and before data
address translation uses any of the segment registers. This should make FreeBSD
run correctly on the G3 again.
Reported by: Mark Millard
MFC after: 1 week
r309017 removed two fields from struct vmmeter, which is embedded in struct
pcpu. This caused the struct size to change, triggering the CTASSERT in
sys/pcpu.h. Add the extra 8 bytes back in as padding.
vmpage requires struct pmap to exist and contain a pm_stats field. As of
r308817, either AIM or BOOKE is required to be set in order to get their
respective pmap structs. Rather than expose them both, or try to unify them
unnecessarily, add a third option which contains only a pm_stats field, and
change the two existing pmap structures to place the common fields at the
beginning of the struct. This actually fixes the stats collection by libkvm on
AIM hardware, because before it was accessing a possibly different offset, which
would cause it to read garbage.
Bump __FreeBSD_version to denote this ABI change, so that ports which depend on
libkvm can be rebuilt.
Change the pv_tracked flag to an int, just in case userspace decides to include
this file and defines BOOKE.
Guard this block from unintentional inclusion with ifdef BOOKE.
Reported by: emaste
Drop the tracking down to the pmap layer, with optimizations to only track
necessary pages. This should give a (slight) performance improvement, as well
as a stability improvement, as the tracking is already mostly handled by the
pmap layer.
Summary:
This implements part of the gpio-poweroff and gpio-restart device tree
bindings. Optional properties are not handled currently. It also currently
only supports level-triggered reset.
Reviewed By: gonzo
Differential Revision: https://reviews.freebsd.org/D8521
Linux has a slightly different device tree definition for DPAA than originally
done in the FreeBSD driver. This changes the driver to be mostly compatible
with the Linux device tree definitions. Currently the differences are:
bman-portals: compatible = "fsl,bman-portals" (Linux is "simple-bus")
qman-portals: compatible = "fsl,qman-portals" (Linux is "simple-bus")
fman: compatible = "fsl,fman" (Linux is "simple-bus")
The Linux device tree doesn't specify anything for rgmii in the mdio. This
change still requires the device tree to specify the phy-handle, and doesn't yet
support tbi.
Summary:
i.MX5 and PowerPC use a very similar eSDHC controller, which is also
similar to the uSDHC controller used by i.MX6. The imx_sdhci driver works
almost completely with PowerPC, with some minor tweaks.
There is one caveat with this: reset currently does not work on PowerPC, so has
been #ifdef'd out until this can be tracked down and fixed. If resets are done
the controller will timeout all data transactions. Without a reset, it appears
to work just fine.
This is part 3, following up r308186 and r308187.
Test Plan:
This has been tested on a PowerPC QorIQ P1022 board. It has not been
tested on i.MX, but no regressions are expected.
Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D8407
Summary:
The Freescale e500v2 PowerPC core does not use a standard FPU.
Instead, it uses a Signal Processing Engine (SPE)--a DSP-style vector processor
unit, which doubles as a FPU. The PowerPC SPE ABI is incompatible with the
stock powerpc ABI, so a new MACHINE_ARCH was created to deal with this.
Additionaly, the SPE opcodes overlap with Altivec, so these are mutually
exclusive. Taking advantage of this fact, a new file, powerpc/booke/spe.c, was
created with the same function set as in powerpc/powerpc/altivec.c, so it
becomes effectively a drop-in replacement. setjmp/longjmp were modified to save
the upper 32-bits of the now-64-bit GPRs (upper 32-bits are only accessible by
the SPE).
Note: This does _not_ support the SPE in the e500v1, as the e500v1 SPE does not
support double-precision floating point.
Also, without a new MACHINE_ARCH it would be impossible to provide binary
packages which utilize the SPE.
Additionally, no work has been done to support ports, work is needed for this.
This also means no newer gcc can yet be used. However, gcc's powerpc support
has been refactored which would make adding a powerpcspe-freebsd target very
easy.
Test Plan:
This was lightly tested on a RouterBoard RB800 and an AmigaOne A1222
(P1022-based) board, compiled against the new ABI. Base system utilities
(/bin/sh, /bin/ls, etc) still function appropriately, the system is able to boot
multiuser.
Reviewed By: bdrewery, imp
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D5683
Instead replace it with a different hack, that turns fman into a simplebus
subclass, and maps its children within its address space.
Since all PHY communication is done through dtsec0's mdio space, the FDT
contains a reference to the dtsec0 mdio handle in all nodes that need it.
Instead of using Freescale's implementation for MII access, use our own (copied
loosely from the eTSEC driver, and could possibly be merged eventually). This
lets us access the registers directly rather than needing a full dtsec interface
just to access the registers.
Future directions will include turning fman into more of a simplebus, and not
mapping the region and playing games. This will require changes to the dtsec
driver to make it a child of fman, and possibly other drivers as well.
Static variables aren't MP-safe, and this was causing bizarre segfaults on a
dual-core e500v2 system (P1022).
Still left is one static variable, which should be moved into the pcb instead,
but as illegal instructions haven't been hit yet, it's lower priority.
MFC after: 1 week
r306065/r306067 introduced ofw_parse_bootargs(), setting environment variables
from Open Firmware's /chosen/bootargs property. On systems booting with
loader(8) (meaning, most systems), the initial static kenv is created with no
extra space, causing kern_setenv() to panic. Since these already have the
environment set directly, there is no need to parse bootargs anyway.
Found by: swills
Using the device pager with /dev/kmem is not stable since KVA mappings
are transient, but the device pager caches the PA associated with a
given offset forever. Interestingly, mips' implementation of
memmap() already refused requests for /dev/kmem.
Note that kvm_read/kvm_write do not use mmap, but use read and write on
/dev/kmem, so this should not affect libkvm users.
Reviewed by: kib
MFC after: 2 months
with no creative content. Include "lost" changes from git:
o Use /dev/efi instead of /dev/efidev
o Remove redundant NULL checks.
Submitted by: kib@, dim@, zbb@, emaste@
to add actions that run when a TCP frame is sent or received on a TCP
session in the ESTABLISHED state. In the base tree, this functionality is
only used for the h_ertt module, which is used by the cc_cdg, cc_chd, cc_hd,
and cc_vegas congestion control modules.
Presently, we incur overhead to check for hooks each time a TCP frame is
sent or received on an ESTABLISHED TCP session.
This change adds a new compile-time option (TCP_HHOOK) to determine whether
to include the hhook(9) framework for TCP. To retain backwards
compatibility, I added the TCP_HHOOK option to every configuration file that
already defined "options INET". (Therefore, this patch introduces no
functional change. In order to see a functional difference, you need to
compile a custom kernel without the TCP_HHOOK option.) This change will
allow users to easily exclude this functionality from their kernel, should
they wish to do so.
Note that any users who use a custom kernel configuration and use one of the
congestion control modules listed above will need to add the TCP_HHOOK
option to their kernel configuration.
Reviewed by: rrs, lstewart, hiren (previous version), sjg (makefiles only)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D8185
Setting the doze registers wasn't actually working, and was being masked by a
bad #ifdef. Since the #ifdef was fixed, now e500mc-based SoCs hang at idle.
Fix this by using the intended wait.
MFC after: 1 week
Summary:
This enables some features of the DIU, using a static configuration,
specified either via a 'edid' property on the 'display' FDT node, or a
'video-mode' environment variable (bootarg). 'video-mode' was chosen because it
matches u-boot's naming, so it can be set with:
setenv bootargs video-mode=${video-mode}
at the u-boot CLI.
Mouse cursor is not supported currently, as a hardware cursor is not supported
by framebuffer VT yet. Currently it only supports a 32bpp ARGB (actually BGRA)
format, and only a single composite plane, at up to 1280x1024.
Differential Revision: https://reviews.freebsd.org/D8022
