Commit Graph

2357 Commits

Author SHA1 Message Date
Justin Hibbits
6f489d43c8 Missed ofw_machdep.c in r282264. 2015-04-30 03:15:07 +00:00
Justin Hibbits
6c8df58287 Unify booke and AIM machdep.
Much of the code was common to begin with.  There is one nit, which is likely
not an issue at all.  With the old code, the AIM machdep would __syncicache()
the entire kernel core at setup.  However, in the unified setup, that seems to
hang on the MPC7455, perhaps because it's running later than before.  Removing
this allows it to boot just fine.  Examining the code, the FreeBSD loader
already does syncicache of the full kernel, and each module loaded, so this
doesn't appear to be an actual problem.

Initial code by Nathan Whitehorn.
2015-04-30 01:24:25 +00:00
Hans Petter Selasky
5caa65ca2d The add_bounce_page() function can be called when loading physical
pages which pass a NULL virtual address. If the BUS_DMA_KEEP_PG_OFFSET
flag is set, use the physical address to compute the page offset
instead. The physical address should always be valid when adding
bounce pages and should contain the same page offset like the virtual
address.

Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
MFC after:	1 week
Reviewed by:	jhb@
2015-04-28 06:12:37 +00:00
Justin Hibbits
a745246822 Implement hwpmc(4) for Freescale e500 core.
This supports e500v1, e500v2, and e500mc. Tested only on e500v2, but the
performance counters are identical across all, with e500mc having some
additional events.

Relnotes:	Yes
2015-04-18 21:39:17 +00:00
John Baldwin
dbee5c671a Move the 32-bit compatible procfs types from freebsd32.h to <sys/procfs.h>
and export them to userland.
- Define __HAVE_REG32 on platforms that define a reg32 structure and check
  for this in <sys/procfs.h> to control when to export prstatus32, etc.
- Add prstatus32_t and prpsinfo32_t typedefs for the 32-bit structures.
  libbfd looks for these types, and having them fixes 'gcore' in gdb of a
  32-bit process on a 64-bit platform.
- Use the structure definitions from <sys/procfs.h> in gcore's elf32 core
  dump code instead of duplicating the definitions.

Differential Revision:	https://reviews.freebsd.org/D2142
Reviewed by:	kib, nathanw (powerpc bits)
MFC after:	1 week
2015-04-08 16:30:45 +00:00
Justin Hibbits
39a4b70fbc Clean up printtrap a little.
* Sort exceptions
* Add printing of ESR on book-e, and only print DSISR on AIM
2015-04-08 04:37:11 +00:00
Justin Hibbits
e3e38bc79f Add DTrace support for Book-E PowerPC.
Book-E got DTrace support for free with r281096&related.  This adds the bits to
the db_trap_glue() to support FBT.

Relnotes:	Yes
2015-04-08 04:35:26 +00:00
Justin Hibbits
d8f2c16bb3 Unbreak book-e, broken by the trap.c merge (missed this file). 2015-04-08 00:31:33 +00:00
Justin Hibbits
7a9d50b370 Fix the index for FAULTBUF_R13, missed during merge/cleanup. 2015-04-06 16:29:45 +00:00
Justin Hibbits
6d53f4a6ae Missed this in r281096 as well.
Renumber EXC_DEBUG to be above EXC_LAST, so as not to conflict with AIM trap
vectors.
2015-04-05 16:35:13 +00:00
Justin Hibbits
28cbb9b173 Unify Book-E and AIM trap.c
Summary:
Book-E and AIM trap.c are almost identical, except for a few bits.  This is step
1 in unifying them.

This also renumbers EXC_DEBUG, to not conflict with AIM vector numbers.  Since
this is the only one thus far that is used in the switch statement in trap(),
it's the only one renumbered.  If others get added to the switch, which conflict
with AIM numbers, they should also be renumbered.

Reviewers: #powerpc, marcel, nwhitehorn

Reviewed By: marcel

Subscribers: imp

Differential Revision: https://reviews.freebsd.org/D2215
2015-04-05 02:42:52 +00:00
Justin Hibbits
20d34e61aa Add a GPIO driver for the mpc85xx.
This has only been tested on the RB800, using the RB800's FDT, and pulls the
GPOUT and GPIN registers from the FDT.
2015-04-04 02:34:40 +00:00
Ryan Stone
f2c2231e0c Fix integer truncation bug in malloc(9)
A couple of internal functions used by malloc(9) and uma truncated
a size_t down to an int.  This could cause any number of issues
(e.g. indefinite sleeps, memory corruption) if any kernel
subsystem tried to allocate 2GB or more through malloc.  zfs would
attempt such an allocation when run on a system with 2TB or more
of RAM.

Note to self: When this is MFCed, sparc64 needs the same fix.

Differential revision:	https://reviews.freebsd.org/D2106
Reviewed by:	kib
Reported by:	Michael Fuckner <michael@fuckner.net>
Tested by:	Michael Fuckner <michael@fuckner.net>
MFC after:	2 weeks
2015-04-01 12:42:26 +00:00
Justin Hibbits
58cb9ed9e6 CCSRBAR_VA is mpc85xx-specific, so add guards, and include the proper header
file for it.

MFC after:	1 month
2015-03-31 05:29:44 +00:00
Justin Hibbits
cf0b1c3340 Wrap #ifdef guards around pmap_bootstrap ap. It's only used in SMP, and
building without SMP causes a build failure.

MFC after:	1 month
2015-03-28 21:39:42 +00:00
Jack F Vogel
1aa7c60ccd Correct the ixgbe entries in mips and powerpc, and add the module
entries in i386/amd64 in the Makefile
2015-03-18 16:54:03 +00:00
Nathan Whitehorn
ad7ea69dce Convert PTE eviction lock from an RW lock to a RM lock. It is held for
writing approximately never (< 0.00000001% under heavy VM load, and it can
go for months without ever being acquired in normal operation). This
provides a 10% (2-minute) improvement in wall clock time for make -j32
buildworld on a 4-core 32-thread POWER8.
2015-03-16 16:29:33 +00:00
Nathan Whitehorn
1cd30eb6dd Deallocate any leftover page table entries in the LPAR at boot. This
prevents contamination from a previous kernel (e.g. after shutdown -r).
2015-03-13 00:08:58 +00:00
Nathan Whitehorn
0aff8b5c4a Provide VSX context in ucontext(3) API. 2015-03-12 21:15:38 +00:00
Nathan Whitehorn
8704b9e9db The H_VIO_SIGNAL hypercall only enables interrupts for future received
packets and does not schedule interrupts for any packets currently
enqueued. Close two races where enqueued packets may not ever trigger
interrupts. The first of these, at adapter initialization time, was
especially severe since a rush of enqueued packets could actually fill
the receive buffer completely, stalling the interface forever.

MFC after:	2 weeks
2015-03-12 17:01:30 +00:00
Nathan Whitehorn
276df218b9 Allow PowerMac systems to be booted from an FDT as well as Open Firmware.
This is not complete yet: the gem(4) interface on my laptop seems to
disappear from the PCI bus as a result of quiescing Open Firmware in the
boot loader.
2015-03-10 16:01:43 +00:00
Nathan Whitehorn
8ff77bff59 Provide $FreeBSD$ in the standard way. This fixes the build with clang 3.6. 2015-03-08 16:50:45 +00:00
Hans Petter Selasky
a985ae9b4a Add support for USB display link adapters to the FB and VT drivers.
The vtophys() function is used to get the physical page address for
the virtually allocated frame buffers when a physically continuous
memory area is not available. This change also allows removing the
masking of the FB_FLAG_NOMMAP flag in the PS3 syscons driver.

The FB and VT drivers were tested using X.org/xf86-video-scfb and
syscons.
2015-03-07 20:45:15 +00:00
Nathan Whitehorn
c3e2821f5f Make assembly slightly more idiomatic (and able to be handled by clang's
integrated assembler).
2015-03-07 20:27:00 +00:00
Nathan Whitehorn
5c845fde2e Make 32-bit PowerPC kernels, like 64-bit PowerPC kernels, position-independent
executables. The goal here, not yet accomplished, is to let the e500 kernel
run under QEMU by setting KERNBASE to something that fits in low memory and
then having the kernel relocate itself at runtime.
2015-03-07 20:14:46 +00:00
Nathan Whitehorn
6df61aad0a Move IVOR setup from assembler to C, decreasing required assumptions about
address formats for trap handlers.
2015-03-05 05:53:08 +00:00
Nathan Whitehorn
f14cf38dbe The AIM DAR (data access fault address register) and Book-E DEAR registers
have the same meaning and occupy the same memory address in the trapframe
courtesy of union. Avoid some pointless #ifdef by spelling them both 'DAR'
in the trapframe.
2015-03-04 21:06:57 +00:00
Nathan Whitehorn
fb64e73880 Garbage collect old function prototypes. 2015-03-04 17:04:22 +00:00
Nathan Whitehorn
d1295abdc0 Move Book-E/AIM dependent bits for setting user PMAP during thread switch
out of cpu_switch() and into pmap_activate() where they belong. This also
removes all the #ifdef from cpu_switch().
2015-03-04 16:45:31 +00:00
Nathan Whitehorn
2c8f60acb3 Missed local diff. 2015-03-01 21:47:38 +00:00
Nathan Whitehorn
3846dae834 Initialize NX stack capabilities and direct map status in pmap like on AIM. 2015-03-01 21:23:23 +00:00
Nathan Whitehorn
7a49d964d3 Merge r278429 from ppc64:
Fix an extremely subtle concurrency bug triggered by running on 32-thread
POWER8 systems. During thread switch, there was a very small window when
the stack pointer was set to the stack pointer of the outgoing thread, but
after the lock on that thread had already been released.

If, during that window, the outgoing thread were rescheduled on another CPU
and begin execution and an exception were taken on the original CPU, the
trap handler and the outgoing thread would simultaneously execute on the same
stack, causing memory corruption. Fix this by making sure to release the
old thread only after cpu_switch() is done with its stack.

MFC after:	2 weeks
2015-03-01 21:20:18 +00:00
Nathan Whitehorn
d4eb568e07 Fix unitialized variable. 2015-02-27 20:32:09 +00:00
Nathan Whitehorn
827cc9b981 New pmap implementation for 64-bit PowerPC processors. The main focus of
this change is to improve concurrency:
- Drop global state stored in the shadow overflow page table (and all other
  global state)
- Remove all global locks
- Use per-PTE lock bits to allow parallel page insertion
- Reconstruct state when requested for evicted PTEs instead of buffering
  it during overflow

This drops total wall time for make buildworld on a 32-thread POWER8 system
by a factor of two and system time by a factor of three, providing performance
20% better than similarly clocked Core i7 Xeons per-core. Performance on
smaller SMP systems, where PMAP lock contention was not as much of an issue,
is nearly unchanged.

Tested on:	POWER8, POWER5+, G5 UP, G5 SMP (64-bit and 32-bit kernels)
Merged from:	user/nwhitehorn/ppc64-pmap-rework
Looked over by:	jhibbits, andreast
MFC after:	3 months
Relnotes:	yes
Sponsored by:	FreeBSD Foundation
2015-02-24 21:37:20 +00:00
Nathan Whitehorn
09ae596bf6 Fix race in interrupt handling that could cause IO to hang up under heavy
load.
2015-02-23 20:38:00 +00:00
Nathan Whitehorn
35f612b88a Kernel support for the Vector-Scalar eXtension (VSX) found on the POWER7
and POWER8. This instruction set unifies the 32 64-bit scalar floating
point registers with the 32 128-bit vector registers into a single bank
of 64 128-bit registers. Kernel support mostly amounts to saving and
restoring the wider version of the floating point registers and making
sure that both scalar FP and vector registers are enabled once a VSX
instruction is executed. get_mcontext() and friends currently cannot
see the high bits, which will require a little more work.

As the system compiler (GCC 4.2) does not support VSX, making use of this
from userland requires either newer GCC or clang.

Relnotes:	yes
Sponsored by:	FreeBSD Foundation
2015-02-22 21:40:27 +00:00
Nathan Whitehorn
0a9ce08bc9 Allow use of higher-resolution (e.g. 1920x1080) framebuffers on PS3.
MFC after:	1 month
2015-02-22 02:59:53 +00:00
Justin Hibbits
7f745b2b49 Make the PowerMac fan control nonlinear
Summary:
Currently, fan control is linear between the target temperature and max
temperature, which is far from ideal.  This changes it to be proportional to the
distance between the current temperature and the two endpoints (target and max
temp).  This also adds a hysteresis, so that fans keep going when the
temperature drops, for about 10 seconds, before slowing down.

Reviewers: nwhitehorn

Reviewed By: nwhitehorn

Differential Revision: https://reviews.freebsd.org/D1549

MFC after:	3 weeks
2015-02-20 06:19:23 +00:00
Justin Hibbits
9fdc5d59f3 Match the right backlight driver.
Some ATI-based PowerBooks use the string 'mnca' in the backlight controller
device tree entry, so account for this and don't use nVidia when it's not an
nVidia device.

MFC after:	3 weeks
2015-02-18 07:34:32 +00:00
Justin Hibbits
5f41b3c1da Don't set the write bit if we're just reading.
Also fix a couple typos.

MFC after:	3 weeks
2015-02-18 06:53:40 +00:00
Nathan Whitehorn
1c8e60edbd Having the TOC pointer in kernel dbeugger printouts is useful. 2015-02-17 01:23:38 +00:00
Rui Paulo
29d0137a8d Remove FreeBSD/wii.
This port failed to gain traction and probably only a couple Wii consoles
ran FreeBSD all the way to single user mode with an md(4). IPC
support was never implemented, so it was impossible to use any peripheral

Any further development, if any, will happen at https://github.com/rpaulo/wii.

Discussed with:	nathanw (a long time ago), jhibbits
2015-02-10 06:35:16 +00:00
Nathan Whitehorn
a4c6f6e512 Add error reporting to interrupt CPU binding. 2015-02-10 00:57:26 +00:00
Nathan Whitehorn
9ddcd32269 Set thread priorities on multithreaded CPUs so that threads holding a
spinlock are high-priority and threads waiting for a spinlock are set to
low priority.
2015-02-10 00:55:42 +00:00
Nathan Whitehorn
0174acd439 Distribute interrupts across multiple CPUs in SMP configurations instead of sending them
all to CPU 0.
2015-02-09 19:21:54 +00:00
Nathan Whitehorn
3b33679869 Mark invalid page table entries correctly for PMAP as well as for the
hypervisor. This prevents an infinite loop where processes with evicted
pages would page fault forever when PMAP decided the evicted pages on
which the process was faulting was actually present and did not need to
be restored.

Found while building LLVM with make -j32.

Sponsored by:	FreeBSD Foundation
2015-02-09 15:58:27 +00:00
Bjoern A. Zeeb
66fe94642d Properly hide a variable under #ifdef as it is only used inside the
specific #ifdef block otherwise leaving an unused variable and breaking
other kernel builds.
2015-02-09 11:34:45 +00:00
Nathan Whitehorn
07e765cd81 Fix typo in PTE insertion overflow handling: use the page we're actually
returning, not the one we just looked at.
2015-02-09 07:08:54 +00:00
Nathan Whitehorn
53607fe3cc Fix an extremely subtle concurrency bug triggered by running on 32-thread
POWER8 systems. During thread switch, there was a very small window when
the stack pointer was set to the stack pointer of the outgoing thread, but
after the lock on that thread had already been released.

If, during that window, the outgoing thread were rescheduled on another CPU
and begin execution and an exception were taken on the original CPU, the
trap handler and the outgoing thread would simultaneously execute on the same
stack, causing memory corruption. Fix this by making sure to release the
old thread only after cpu_switch() is done with its stack.

MFC after:	2 weeks
Sponsored by:	FreeBSD Foundation
2015-02-09 02:17:21 +00:00
Nathan Whitehorn
f1e4841797 Technically speaking, using one virtal processor area for all CPUs is a
violation of the spec. Make duplicate entries for each CPU.
2015-02-09 02:13:36 +00:00