2495 Commits

Author SHA1 Message Date
jhibbits
0677ff9cef Implement pmap_change_attr() for PowerPC (Book-E only for now)
Summary:
Some drivers need special memory requirements.  X86 solves this with a
pmap_change_attr() API, which DRM uses for changing the mapping of the GART and
other memory regions.  Implement the same function for PowerPC.  AIM currently
does not need this, but will in the future for DRM, so a default is added for
that, for business as usual.  Book-E has some drivers coming down that do
require non-default memory coherency.  In this case, the Datapath Acceleration
Architecture (DPAA) based ethernet controller has 2 regions for the buffer
portals: cache-inhibited, and cache-enabled.  By default, device memory is
cache-inhibited.  If the cache-enabled memory regions are mapped
cache-inhibited, an alignment exception is thrown on access.

Test Plan:
Tested with a new driver to be added after this (DPAA dTSEC ethernet driver).
No alignment exceptions thrown, driver works as expected with this.

Reviewed By:	nwhitehorn
Sponsored by:	Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D5471
2016-02-27 20:39:36 +00:00
jhibbits
cd50f01967 Move another range check to use RMAN_IS_DEFAULT_RANGE(). 2016-02-27 16:27:48 +00:00
jhibbits
580950437f Allow the size argument for law_enable() to be non-power-of-2.
Although the local access windows are powers of 2 in size, allow arguments that
aren't power of 2, and round up.
2016-02-23 02:28:19 +00:00
skra
f4b6499ab5 As <machine/pmap.h> is included from <vm/pmap.h>, there is no need to
include it explicitly when <vm/pmap.h> is already included.

Reviewed by:	alc, kib
Differential Revision:	https://reviews.freebsd.org/D5373
2016-02-22 09:02:20 +00:00
zbb
e9cf712fda Revert r295756:
Extract common code from PowerPC's ofw_pci

Import portions of the PowerPC OF PCI implementation into
new file "ofw_pci.c", common for other platforms. The files ofw_pci.c and
ofw_pci.h from sys/powerpc/ofw no longer exist. All required declarations
are moved to sys/dev/ofw/ofw_pci.h.

This creates a new ofw_pci_write_ivar() function and modifies
ofw_pci_nranges(), ofw_pci_read_ivar(), ofw_pci_route_interrupt()
methods.
Most functions contain existing ppc implementations in the majority
unchanged. Now there is no need to have multiple identical copies
of methods for various architectures.

Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Reviewed by:   jhibbits, mmel
Differential Revision: https://reviews.freebsd.org/D4879

This needs to return to the drawing board as it breaks both
PowerPC and Sparc64 build.

Pointed out by: jhibbits
2016-02-20 12:28:20 +00:00
jhibbits
f8385663ee Introduce a RMAN_IS_DEFAULT_RANGE() macro, and use it.
This simplifies checking for default resource range for bus_alloc_resource(),
and improves readability.

This is part of, and related to, the migration of rman_res_t from u_long to
uintmax_t.

Discussed with:	jhb
Suggested by:	marcel
2016-02-20 01:32:58 +00:00
zbb
e22231d219 Extract common code from PowerPC's ofw_pci
Import portions of the PowerPC OF PCI implementation into
new file "ofw_pci.c", common for other platforms. The files ofw_pci.c and
ofw_pci.h from sys/powerpc/ofw no longer exist. All required declarations
are moved to sys/dev/ofw/ofw_pci.h.

This creates a new ofw_pci_write_ivar() function and modifies
ofw_pci_nranges(), ofw_pci_read_ivar(), ofw_pci_route_interrupt() methods.
Most functions contain existing ppc implementations in the majority
unchanged. Now there is no need to have multiple identical copies
of methods for various architectures.

Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Reviewed by:   jhibbits, mmel
Differential Revision: https://reviews.freebsd.org/D4879
2016-02-18 13:07:21 +00:00
zbb
d2a1177be6 Introduce bus_get_bus_tag() method
Provide bus_get_bus_tag() for sparc64, powerpc, arm, arm64 and mips
nexus and its children in order to return a platform specific default tag.

This is required to ensure generic correctness of the bus_space tag.
It is especially needed for arches where child bus tag does not match
the parent bus tag. This solves the problem with ppc architecture
where the PCI bus tag differs from parent bus tag which is big-endian.

This commit is a part of the following patch:
https://reviews.freebsd.org/D4879

Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Reviewed by:   jhibbits, mmel
Differential Revision: https://reviews.freebsd.org/D4879
2016-02-18 13:00:04 +00:00
jhibbits
bc7ee6c357 Another conversion u_long -> rman_res_t 2016-02-16 21:30:55 +00:00
andrew
05274f8a8b Allow callers of OF_decode_addr to get the size of the found mapping. This
will allow for code that uses the old fdt_get_range and fdt_regsize
functions to find a range, map it, access, then unmap to replace this, up
to and including the map, with a call to OF_decode_addr.

As this function should only be used in the early boot code the unmap is
mostly do document we no longer need the mapping as it's a no-op, at least
on arm.

Reviewed by:	jhibbits
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D5258
2016-02-16 15:18:12 +00:00
jhibbits
60370dfaf5 Fix a panic bug that cropped up in the PTE rewrite.
PTE was getting overwritten by just the flags.

Pointy-hat to:	jhibbits
2016-02-16 02:13:55 +00:00
kib
a05a278552 POSIX states that #include <signal.h> shall make both mcontext_t and
ucontext_t available.  Our code even has XXX comment about this.

Add a bit of compliance by moving struct __ucontext definition into
sys/_ucontext.h and including it into signal.h and sys/ucontext.h.

Several machine/ucontext.h headers were changed to use namespace-safe
types (like uint64_t->__uint64_t) to not depend on sys/types.h.
struct __stack_t from sys/signal.h is made always visible in private
namespace to satisfy sys/_ucontext.h requirements.

Apparently mips _types.h pollutes global namespace with f_register_t
type definition.  This commit does not try to fix the issue.

PR:	207079
Reported and tested by:	Ting-Wei Lan <lantw44@gmail.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2016-02-12 07:38:19 +00:00
jhibbits
323ead721e Migrate the PTE format for book-e to standardize on the 'indirect PTE' format
Summary:
The revised Book-E spec, adding the specification for the MMUv2 and e6500,
includes a hardware PTE layout for indirect page tables.  In order to support
this in the future, migrate the PTE format to match the MMUv2 hardware PTE
format.

Test Plan: Boot tested on a P5020 board.  Booted to multiuser mode.

Differential Revision: https://reviews.freebsd.org/D5224
2016-02-11 13:15:37 +00:00
glebius
b3c4f0ddbf Include sys/_task.h into uma_int.h, so that taskqueue.h isn't a
requirement for uma_int.h.

Suggested by:	jhb
2016-02-09 20:22:35 +00:00
jhb
a4232236fc Fix build of powerpc FPU emulator after changes in r295132 to restore the
ABI of struct fpreg.  The FPU emulator operates on the "raw" FPU state
stored in the pcb rather than the "cooked" fpreg state used for ptrace()
and cores.

Reported by:	bz
2016-02-04 17:43:56 +00:00
glebius
e807599e3f Fix build. 2016-02-04 03:55:41 +00:00
jhibbits
86be85e87e Align signal stack pointer to 16 bytes.
The stack must be aligned to 16 bytes at all times.  Clang 3.8 is especially
adamant about this, and causes strange behavior and segmentation faults if it is
not the case.

PR:		kern/206810
2016-02-03 01:50:27 +00:00
jhibbits
d6406df839 Make lbc(4) the same driver pass as simplebus.
Device trees mark lbc as compatible with simplebus.  Since simplebus is passed
first, it attaches first.  When lbc's pass (default pass) comes, the bus is
already attached to simplebus, so is skipped.

Sponsored by:	Alex Perez/Inertial Computing
2016-02-03 01:29:06 +00:00
jhb
0e26efe2d7 Restore the ABI of 'struct fpreg' on powerpc.
The PT_{GET,SET}FPREGS requests use 'struct fpreg' and the NT_FPREGSET
core note stores a copy of 'struct fpreg'.  As with x86 and the floating
point state there compared to the extended state in XSAVE, struct fpreg
on powerpc now only holds the 'base' FP state, and setting it via
PT_SETFPREGS leaves the extended vector state in a thread unchanged.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D5004
2016-02-01 23:12:04 +00:00
jhibbits
d1bdb4dcfe Use the correct type to pmap_mapdev() in nexus_activate_resource().
pmap_mapdev() takes vm_paddr_t, which may be sized differently from vm_offset_t,
as it is in book-e.

Sponsored by:	Alex Perez/Inertial Computing
2016-02-01 02:04:40 +00:00
mmel
a0d10caff7 EHCI: Make core reset and port speed reading more generic.
Use driver settable callbacks for handling of:
- core post reset
- reading actual port speed

Typically, OTG enabled EHCI cores wants setting of USBMODE register,
but this register is not defined in EHCI specification and different
cores can have it on different offset.

Also, for cores with TT extension, actual port speed must be determinable.
But again, EHCI specification not covers this so this patch provides
function for two most common variant of speed bits layout.

Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D5088
2016-01-28 14:11:59 +00:00
jhb
169dd4da8e Convert ss_sp in stack_t and sigstack to void *.
POSIX requires these members to be of type void * rather than the
char * inherited from 4BSD.  NetBSD and OpenBSD both changed their
fields to void * back in 1998.  No new build failures were reported
via an exp-run.

PR:		206503 (exp-run)
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D5092
2016-01-27 17:55:01 +00:00
jhibbits
31bb8ee5bd Convert rman to use rman_res_t instead of u_long
Summary:
Migrate to using the semi-opaque type rman_res_t to specify rman resources.  For
now, this is still compatible with u_long.

This is step one in migrating rman to use uintmax_t for resources instead of
u_long.

Going forward, this could feasibly be used to specify architecture-specific
definitions of resource ranges, rather than baking a specific integer type into
the API.

This change has been broken out to facilitate MFC'ing drivers back to 10 without
breaking ABI.

Reviewed By: jhb
Sponsored by:	Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D5075
2016-01-27 02:23:54 +00:00
jhibbits
01e9d5450a Older Book-E processors (e500v1/e500v2) don't support dcbzl.
The only difference between dcbzl and dcbz is dcbzl operates on native cache
line lengths regardless of L1CSR0[DCBZ32].  Since we don't change the cache line
size, the cacheline_size variable will reflect the used cache line length, and
dcbz will work as expected.
2016-01-26 04:41:18 +00:00
jhibbits
be339e6139 Fix a debug printf().
Somehow this printf() was missed in the conversion of vm_paddr_t to 64-bit, and
made it through until now.

Sponsored by:	Alex Perez/Inertial Computing
2016-01-26 03:52:14 +00:00
jhibbits
dbdf098d2f Revert a printf change from r294307.
Caused build failures with MPC85XX.

Pointy-hat to:	jhibbits
2016-01-19 23:35:12 +00:00
jhibbits
730341be8a Hide most of the PTE initialization and management.
By confining the page table management to a handful of functions it'll be
easier to modify the page table scheme without affecting other functions.
This will be necessary when 64-bit support is added, and page tables become
much larger.
2016-01-19 03:07:25 +00:00
nwhitehorn
999db941f1 Move RTAS PCI-specific interpretation of the "reg" property of the PCI host
device to the RTAS driver, where it belongs.
2016-01-18 17:27:16 +00:00
jhibbits
b6b4543199 Partially revert r294055.
This part was a botched revert of a test change.

Spotted by:	alc
2016-01-16 21:24:12 +00:00
jhibbits
95c357cb5b Adjust VM_MAX_KERNEL_ADDRESS to the max address, not the minimum next.
VM_MAX_KERNEL_ADDERESS is the maximum KVA address.  0xf8000000 is the start of
device mapping space.  Since several conditional checks use '<=' against
VM_MAX_KERNEL_ADDRESS, bad things could feasibly happen.
2016-01-14 23:22:43 +00:00
nwhitehorn
9b316d0daf Remove dead code and dead comments, most notably the implemenation of the
now-obsolete setfault(). No NetBSD code exists in the AIM locore files, so
update the copyrights there.
2016-01-10 18:00:01 +00:00
nwhitehorn
f5d714b876 Use setjmp() instead of the identical-except-for-having-a-wrong-prototype
setfault() when testing for faults. This should also help the compiler
do the right thing with this complicated-to-optimize function.
2016-01-10 16:42:14 +00:00
dchagin
e706df7b9a Implement vsyscall hack. Prior to 2.13 glibc uses vsyscall
instead of vdso. An upcoming linux_base-c6 needs it.

Differential Revision:  https://reviews.freebsd.org/D1090

Reviewed by:	kib, trasz
MFC after:	1 week
2016-01-09 20:18:53 +00:00
jhibbits
9b4418aa8d Make arguments for booke_init() u_long, to match register width.
On powerpc64, pointers are 64 bits, so casting from uint32_t changes the integer
width.

The alternative was to use register_t, but I didn't see register_t used as
argument type for any other functions, though didn't look too closely.  u_long
was an acceptable alternative.  On 64-bit it's 64 bits, on 32-bit it's 32 bits.
2016-01-04 02:20:14 +00:00
jhibbits
afd51eac6c Set the cacheline size before calling powerpc_init()
powerpc_init() initializes the mmu.  Since this may clear pages via
pmap_zero_page(), set the cacheline size before calling into it, so
pmap_zero_page() has the right cacheline size.  This isn't completely
necessary now, but will be when 64-bit book-e is completed.
2016-01-04 01:33:07 +00:00
jhibbits
765cefec52 Initialize the rid for input.
Left uninitialized, random rid causes the IRQ setup to fail, and the PCI device
to not be attached.
2016-01-03 15:35:01 +00:00
jhibbits
f77e82d7d2 Add error interrupt handler for Freescale PCI errors
This eliminates a 'interrupt storm' warning spam with the P5020.

Obtained from:	Semihalf
2016-01-03 15:24:57 +00:00
andreast
592778f249 Fix booting of 32-bit kernels on 64-bit G5 hardware.
For rs6000, most memory insns and addi/addis do not allow GPR0 for RA
(they use literal zero there instead). So use a 'b' constraint to make
sure to have a base register other than GPR0.
GCC-4.7 and up handles this with allocating r9 instead of r0.
2016-01-02 22:04:37 +00:00
nwhitehorn
67b3e73120 Bump the maximum number of interrupt controllers to allow for the
proliferation of them on large IBM systems and add some error checking if
we exceed that number.

MFC after:	1 week
2016-01-02 19:34:37 +00:00
nwhitehorn
e43031018e Bring CPU features list in line with the ABI requirements.
MFC after:	1 week
2016-01-02 18:15:10 +00:00
nwhitehorn
3766fc66d6 Switch setting MSR[SF] to C code. This removes any CPU-specific code
(MSF[SF] is a Book 3-S thing) in the 64-bit locore64.S.
2016-01-02 18:10:53 +00:00
ian
3d96cedc35 Make the 'env' directive described in config(5) work on all architectures,
providing compiled-in static environment data that is used instead of any
data passed in from a boot loader.

Previously 'env' worked only on i386 and arm xscale systems, because it
required the MD startup code to examine the global envmode variable and
decide whether to use static_env or an environment obtained from the boot
loader, and set the global kern_envp accordingly.  Most startup code wasn't
doing so.  Making things even more complex, some mips startup code uses an
alternate scheme that involves calling init_static_kenv() to pass an empty
buffer and its size, then uses a series of kern_setenv() calls to populate
that buffer.

Now all MD startup code calls init_static_kenv(), and that routine provides
a single point where envmode is checked and the decision is made whether to
use the compiled-in static_kenv or the values provided by the MD code.

The routine also continues to serve its original purpose for mips; if a
non-zero buffer size is passed the routine installs the empty buffer ready
to accept kern_setenv() values.  Now if the size is zero, the provided buffer
full of existing env data is installed.  A NULL pointer can be passed if the
boot loader provides no env data; this allows the static env to be installed
if envmode is set to do so.

Most of the work here is a near-mechanical change to call the init function
instead of directly setting kern_envp.  A notable exception is in xen/pv.c;
that code was originally installing a buffer full of preformatted env data
along with its non-zero size (like mips code does), which would have allowed
kern_setenv() calls to wipe out the preformatted data.  Now it passes a zero
for the size so that the buffer of data it installs is treated as
non-writeable.
2016-01-02 02:53:48 +00:00
jhibbits
b7090dfbe9 Use uint32_t for LBC block size.
LBC block size can only be up to 4GB.  The existing code already clamps it, but
mixes unsigned long and uint32_t.  This works on 32-bit targets, but not 64-bit,
so isn't completely correct.  This fixes the type confusion.
2016-01-01 15:36:56 +00:00
jhibbits
e13a7f7a36 Extend idle support for newer Book-E cores.
Newer Book-E cores (e500mc, e5500, e6500) do not support the WE bit in the MSR,
and instead delegate CPU idling to the SoC.

Perhaps in the future the QORIQ_DPAA option for the mpc85xx platform will become
a subclass, which will eliminate most of the #ifdef's.
2016-01-01 02:47:40 +00:00
jhibbits
0ecd3402cf Add platform support for QorIQ SoCs.
This includes the following changes:
* SMP kickoff for QorIQ (tested on P5020)
* Errata fixes for some silicon revisions
* Enables L2 (and L3 if available) caches
Obtained from:	Semihalf
Sponsored by:	Alex Perez/Inertial Computing
2015-12-30 03:43:25 +00:00
jhibbits
2905d447cf Optimize zero_page for book-e mmu.
Instead of indirectly calling bzero() through mmu_booke_zero_page_area, zero the
full page the same way as the AIM pmap logic does: using dcbz.
2015-12-30 02:26:04 +00:00
jhibbits
3d2aea56f4 Rewrite tid_flush() in C.
There's no need for it to be in asm.  Also, by writing in C, and marking it
static in pmap.c, it saves a branch to the function itself, as it's only used in
one location.  The generated asm is virtually identical to the handwritten code.
2015-12-30 02:23:14 +00:00
jhibbits
7d0bcce58d Update capabilities of e500mc, e5500, e6500. 2015-12-29 03:31:06 +00:00
jhibbits
a56b695591 Extend Book-E to support >4GB RAM
Summary:
With some additional changes for AIM, that could also support much
larger physmem sizes.  Given that 32-bit AIM is more or less obsolete, though,
it's not worth it at this time.

Differential Revision: https://reviews.freebsd.org/D4345
2015-12-24 04:30:15 +00:00
ian
f2c27d0528 Implement OF_decode_addr() for arm. Move most of powerpc's implementation
into a new function that other platforms can share.

This creates a new ofw_reg_to_paddr() function (in a new ofw_subr.c file)
that contains most of the existing ppc implementation, mostly unchanged.
The ppc code now calls the new MI code from the MD code, then creates a
ppc-specific bus_space mapping from the results. The new arm implementation
does the same in an arm-specific way.

This also moves the declaration of OF_decode_addr() from ofw_machdep.h to
openfirm.h, except on sparc64 which uses a different function signature.

This will help all FDT platforms to set up early console access using
OF_decode_addr().
2015-12-21 18:07:32 +00:00