Add I2C OPAL driver and a set of dummy-ones to allow
all I2C things on Power8 to attach.
TODO: better async token management
Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
A reservation granule on PowerPC is a cache line.
On e500mc and derivatives a cacheline size is 64 bytes, not 32. Allocate
the maximum size permitted, but only utilize the size that is needed. On
e500v1 and e500v2 the reservation granule will still be 32 bytes.
These interfaces were put in place to let QorIQ SoCs dictate CPU idling
semantics, in order to support capabilities such as NAP mode and deep sleep.
However, this never stabilized, and the idling support reverted back to
CPU-level rather than SoC level. Move this code back to cpu.c instead. If
at a later date the lower power modes do come to fruition, it should be done
by overriding the cpu_idle_hook instead of this platform hook.
NVMe support is ready and should be compiled-in
to the ppc64 kernel.
Submitted by: Wojciech Macek <wma@semihalf.org>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
We don't support float in the boot loaders, so don't include
interfaces for float or double in systems headers. In addition, take
the unusual step of spiking double and float to prevent any more
accidental seepage.
When processor enters power-save state it releases resources shared with other
cpu threads which makes other cores working much faster.
This patch also implements saving and restoring registers that might get
corrupted in power-save state.
Submitted by: Patryk Duda <pdk@semihalf.com>
Obtained from: Semihalf
Reviewed by: jhibbits, nwhitehorn, wma
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14330
Add function which can store RTC values to OPAL.
Submitted by: Wojciech Macek <wma@semihalf.org>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Summary:
This compartmentalizes the CPU-specific trap components into its own
function, rather than littering the general printtrap() with various checks.
This will let us replace a series of #ifdef's with a runtime conditional check
in the future.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D14416
Make vm_wait() take the vm_object argument which specifies the domain
set to wait for the min condition pass. If there is no object
associated with the wait, use curthread' policy domainset. The
mechanics of the wait in vm_wait() and vm_wait_domain() is supplied by
the new helper vm_wait_doms(), which directly takes the bitmask of the
domains to wait for passing min condition.
Eliminate pagedaemon_wait(). vm_domain_clear() handles the same
operations.
Eliminate VM_WAIT and VM_WAITPFAULT macros, the direct functions calls
are enough.
Eliminate several control state variables from vm_domain, unneeded
after the vm_wait() conversion.
Scetched and reviewed by: jeff
Tested by: pho
Sponsored by: The FreeBSD Foundation, Mellanox Technologies
Differential revision: https://reviews.freebsd.org/D14384
On POWER8 architecture there is a timer with 512Mhz frequency.
It has about 1,95ns period, but it is rounded to 1ns which is not accurate.
Submitted by: Patryk Duda <pdk@semihalf.com>
Obtained from: Semihalf
Reviewed by: wma
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14433
Currently Hypervisor Emulation Assistance interrupt is unhandled.
Executing an undefined instruction in userland triggers kernel panic.
Handle this the same way as Facility Unavailable Interrupt - send
SIGILL signal to userspace.
Submitted by: Michal Stanek <mst@semihalf.com>
Obtained from: Semihalf
Reviewed by: nwhitehorn, pdk@semihalf.com, wma
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14437
zero, matching the IEEE 1275 standard. Since these internal error paths
have never, to my knowledge, been taken, behavior is unchanged.
Reported by: gonzo
MFC after: 2 weeks
This is part of a long-term goal of merging Book-E and AIM into a single GENERIC
kernel. As more work is done, the struct may be optimized further.
Reviewed by: nwhitehorn
Summary:
After revision rS328534('PPC64: use hwref instead of cpuid'), FreeBSD on
powerpc64 virtual machine panics since it is unable to read the
timebase, showing the following error:
get-property for timebase-frequency on zero phandle
panic: Unable to determine timebase frequency!
With the change above, cpuref->cr_hwref does not contain the phandle
anymore, thus, it never reads the proper CPU entry in OF.
Submitted by: Breno Leitao
Differential Revision: https://reviews.freebsd.org/D14204
significant source of cache line contention from vm_page_alloc(). Use
accessors and vm_page_unwire_noq() so that the mechanism can be easily
changed in the future.
Reviewed by: markj
Discussed with: kib, glebius
Tested by: pho (earlier version)
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14273
We don't support older compilers. Most of the code in these files is
for pre-3.0 gcc, which is at least 15 years obsolete. Move to using
phk's sys/_stdargs.h for all these platforms.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D14323
r328113 and affecting SMP systems.
The way the time is set on PowerMacs is racy and relies on all the
CPUs in the system setting a register simultaneously in a rendezvous. A
few-cycle delay can result in out-of-sync times, which can break the
scheduler and result in calls like mtx_sleep() and pause() never timing out
if the thread is migrated while sleeping. r328113 added a call to a no-op
function between the beginning of the rendezvous and setting the time that
was only called on APs and added enough cycles to cause a problematic offset.
For some reason, the fan-management code was the first place this appeared.
Clue from: andreast
Reported by: many
global to per-domain state. Protect reservations with the free lock
from the domain that they belong to. Refactor to make vm domains more
of a first class object.
Reviewed by: markj, kib, gallatin
Tested by: pho
Sponsored by: Netflix, Dell/EMC Isilon
Differential Revision: https://reviews.freebsd.org/D14000
The L3 cache controller (Corenet Platform Cache) is listed with one of its
compatible strings as "cache", which this driver can't attach to. Restrict
to a known list of primary cache controller strings, as found in the l2cache
devicetree binding.
threads from compile-time defines to global variables. This removes a
significant amount of duplicated runtime patches to the compile-time
defines, centralizing the conditional logic in the early startup code.
Reviewed by: jhibbits
It turns out that under some circumstances we can get DSI or DSE before we set
LPCR and LPID so we should set it as early as possible.
Authored by: Patryk Duda <pdk@semihalf.com>
Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
On CHRP and PowerNV, use the interrupt server number in the cpuref and pcpu
hwref field instead of the device-tree phandle and make the CPU IDs reported
to the scheduler dense and with the BSP at 0.
Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14011
Cleaning up AP startup routines. This is a mix of changes
required to make PowerNV running and to modify the code
to be more robust. Previously, some races were seen if more
than 90CPUs were online.
Authored by: Patryk Duda <pdk@semihalf.com>
Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14026
used with hashed page tables on AIM and place it into a new, modular pmap
function called pmap_decode_kernel_ptr(). This function is the inverse
of pmap_map_user_ptr(). With POWER9 radix tables, which mapping to use
becomes more complex than just AIM/BOOKE and it is best to have it in
the same place as pmap_map_user_ptr().
Reviewed by: jhibbits
There's no reason not to build modules for 64-bit QorIQ devices. This
config has evolved to be analogous to the AIM GENERIC64 kernel, so will grow
to match it in more ways as well.
Summary:
Rather than duplicating the checks for programmatic traps all over the code, put
it all in one function. This helps to remove some of the #ifdefs between AIM
and Book-E.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D14082
