Commit Graph

190 Commits

Author SHA1 Message Date
Ian Lepore
38b65fa05c Replace some references to KERNPHYSADDR with the equivelent value passed in
from the bootloader.
2015-12-21 01:14:54 +00:00
Andrew Turner
210d6af74d Move more bus_space_* files to be built by files.arm. This leaves the
definition in a file.* file under sys/arm/arm in the few cases we need it
for non-fdt platforms.

Sponsored by:	ABT Systems Ltd
2015-11-21 15:30:08 +00:00
Ian Lepore
0c1daec859 Eliminate the last dregs of the old global arm_root_dma_tag.
In the old days, device drivers passed NULL for the parent tag when creating
a new tag, and on arm platforms that resulted in a global tag representing
overall platform constraints being substituted in the busdma code.  Now all
drivers use bus_get_dma_tag() and if there is a need to represent overall
platform constraints they will be inherited from a tag supplied by nexus or
some bus driver in the hierarchy.

The only arm platforms still relying on the old global-tag scheme were some
xscale boards with special PCI-bus constraints.  This change provides those
constraints through a tag supplied by the xscale PCI bus driver, and
eliminates the few remaining references to the old global var.

Reviewed by:	cognet
2015-11-02 22:49:39 +00:00
Konstantin Belousov
edc8222303 Make kstack_pages a tunable on arm, x86, and powepc. On i386, the
initial thread stack is not adjusted by the tunable, the stack is
allocated too early to get access to the kernel environment. See
TD0_KSTACK_PAGES for the thread0 stack sizing on i386.

The tunable was tested on x86 only.  From the visual inspection, it
seems that it might work on arm and powerpc.  The arm
USPACE_SVC_STACK_TOP and powerpc USPACE macros seems to be already
incorrect for the threads with non-default kstack size.  I only
changed the macros to use variable instead of constant, since I cannot
test.

On arm64, mips and sparc64, some static data structures are sized by
KSTACK_PAGES, so the tunable is disabled.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 week
2015-08-10 17:18:21 +00:00
Zbigniew Bodek
721555e7ee Fix KSTACK_PAGES issue when the default value was changed in KERNCONF
If KSTACK_PAGES was changed to anything alse than the default,
the value from param.h was taken instead in some places and
the value from KENRCONF in some others. This resulted in
inconsistency which caused corruption in SMP envorinment.

Ensure all places where KSTACK_PAGES are used the opt_kstack_pages.h
is included.

The file opt_kstack_pages.h could not be included in param.h
because was breaking the toolchain compilation.

Reviewed by:   kib
Obtained from: Semihalf
Sponsored by:  The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3094
2015-07-16 10:46:52 +00:00
Andrew Turner
0ebebb1260 Build the cpufunc_asm_* files based on the cpu type, not which config file
we happen to be building.
2015-03-29 22:43:39 +00:00
Andrew Turner
9a25f3e847 Remove the bootconfig parsing. We never used it and always passed either an
empty string or NULL to the setup functions that called into it.
2015-03-29 20:37:28 +00:00
Andrew Turner
90e8f62386 The cpu_id macro was renamed in r278529, catch up with this new name. 2015-02-11 10:37:55 +00:00
Luiz Otavio O Souza
7836352b50 Implement GPIO_GET_BUS() method for all GPIO drivers.
Add helper routines to deal with attach and detach of gpiobus and gpioc
devices that are common to all drivers.
2015-01-31 19:32:14 +00:00
Luiz Otavio O Souza
c67d5d66bf Rename the avila, cambria and zynq GPIO driver names to match the expected
string.

With this change it is not necessary redeclare the driver relations with
gpiobus and gpioc.

This also prevents redundant declarations when gpiobusvar.h is included
(which is going to happen soon).
2015-01-29 18:08:50 +00:00
Ian Lepore
110e70ba1d For some reason, all the arm bus_space functions that work with uint16
values have armv4 in the name.  There's nothing armv4-special about them,
so just use the same sort of names as all the other functions.
2015-01-21 02:56:13 +00:00
Ian Lepore
4098ccafa4 Revise the arm bus_space implementation to avoid dereferencing the tag on
every operation to retrieve the bs_cookie value almost nothing actually uses.

The bus_space struct contains a private data pointer (poorly named bs_cookie,
now renamed to bs_privdata) which is used only by a few old armv4 xscale
implementations.  The bus_space functions were all defined to take this
value as the first parameter instead of the bus_space_tag_t, requiring all
the inline macro and function expansions to dereference the tag to pass it
to another function, which never uses it.  Now all the functions take the tag
as the first parameter and retrieve the privdata if they need it.

Also fix a couple bus_space_unmap() implementations that were calling
kva_free() instead of pmap_unmapdev().

Discussed with:	   cognet
2015-01-21 01:06:08 +00:00
Andrew Turner
ff9dd44ead Add missing END macros to some of the xscale functions.
MFC after:	1 week
Sponsored by:	ABT Systems Ltd
2014-12-05 19:04:08 +00:00
Luiz Otavio O Souza
667357dc9b Moves all the duplicate code to a single function.
Verify for invalid modes and unwanted flags before pass the new flags to
driver.
2014-11-18 17:22:08 +00:00
Luiz Otavio O Souza
8839e0e9f3 Make the GPIO children attach to the first unit available and not only to
unit 0.

It seems that this 'simplification' was copied to all GPIO drivers in tree.

This fix a bug where a GPIO controller could fail to attach its children
(gpioc and gpiobus) if another GPIO driver attach first.
2014-10-28 18:33:59 +00:00
Gleb Smirnoff
6625a48525 Mechanically convert to if_inc_counter(). 2014-09-19 09:20:16 +00:00
John Baldwin
ace8dcfc8a - Don't let rman_reserve_resource() activate the resource in
nexus_alloc_resource() and don't set a bushandle.
  nexus_activate_resource() will set a proper bushandle.
- Implement a proper nexus_release_resource().
- Fix ixppcib_activate_resource() to call rman_activate_resource()
  before creating a mapping for the resource.

Tested by:	jmg
2014-09-12 20:34:19 +00:00
Andrew Turner
b8fd1e31d9 Unify interrupts bit definition and usage. While here remove PSR_C_bit.
Submitted by:	Svatopluk Kraus <onwahe at gmail.com>,
		Michal Meloun <meloun at miracle.cz>
Differential Revision: https://reviews.freebsd.org/D754
2014-09-10 15:25:15 +00:00
John-Mark Gurney
4beaa0151a put these under bootverbose, they are only needed for debugging, not
useful for the normal user durning normal runtime...
2014-08-06 21:16:15 +00:00
Hans Petter Selasky
af3b2549c4 Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
Glen Barber
37a107a407 Revert r267961, r267973:
These changes prevent sysctl(8) from returning proper output,
such as:

 1) no output from sysctl(8)
 2) erroneously returning ENOMEM with tools like truss(1)
    or uname(1)
 truss: can not get etype: Cannot allocate memory
2014-06-27 22:05:21 +00:00
Hans Petter Selasky
3da1cf1e88 Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
2014-06-27 16:33:43 +00:00
Olivier Houchard
d489d1f51f Do not hand the VM the memory used for stacks/page tables/etc. 2014-05-29 16:56:39 +00:00
Ian Lepore
b8821f8415 When mapping device memory, use PTE_DEVICE rather than PTE_NOCACHE.
On armv4 these are defined as synonyms right now, but it's a bit ambiguous
what NOCACHE means (is buffering/write-combining also enabled or not?); this
is a first step towards replacing PTE_NOCACHE with a less ambiguous name.
2014-05-10 20:03:03 +00:00
Ian Lepore
5e4e1d4995 Eliminate irq_dispatch.S. Move the data items it contained into arm/intr.c
and the functionality it provided into arm/exception.S.  Rename the main
irq handling routine from arm_handler_execute() to arm_irq_handler() to
make it more congruent with how other exception handlers are named, and
also update its signature to reflect what has long been reality: it is
passed just a trapframe pointer, no interrupt number argument.
2014-03-10 18:10:09 +00:00
Ian Lepore
510ccb2fd4 The arm exception entry points currently vector through a function pointer
to the actual handler routine.  All the pointers are static-intialized to
the only handlers available, and yet various platform-specific inits still
set those pointers (to the values they're already initialized to).  Begin
to drain the swamp by removing all the redundant external declarations and
runtime setting of the pointers that's scattered around various places.
2014-03-09 18:08:27 +00:00
John Hay
f37fafddd6 Make it possible to use the env kernel config file option for AVILA
and CAMBRIA boards that does not use loader to load the kernel. This
is basically how it was done for i386. This way tunables can also be
set. For example in config file:

env "/conf/AVILA.env"

And in AVILA.env:

vfs.unmapped_buf_allowed=0

MFC after:	2 weeks
2014-02-17 11:05:57 +00:00
Ian Lepore
0c27b1d4fd It turns out a global variable is the only straightforward way to
communicate the kernel's physical load address from where it's known in
initarm() into cpu_mp_start() which is called from non-arm code and
takes no parameters.

This adds the global variable and ensures that all the various copies
of initarm() set it.  It uses the variable in cpu_mp_start(), eliminating
the last uses of KERNPHYSADDR outside of locore.S (where we can now
calculate it instead of relying on the constant).
2014-02-09 02:39:00 +00:00
Ian Lepore
ca3eec15c0 Replace compile-time constant KERNPHYSADDR with abp_physaddr (determined
at runtime) where it's trivial to do so.  Another breadcrumb on the trail
to a kernel that can be loaded at any 1MB boundary.
2014-02-09 01:21:30 +00:00
Ian Lepore
5698bf8c86 Consolidate code related to setting up physical memory configuration into
a new physmem.c file.  The new code provides helper routines that can be
used by legacy SoCs and newer FDT-based systems.  There are routines to
add one or more regions of physically contiguous ram, and exclude one or
more physically contiguous regions of ram.  Ram can be excluded from crash
dumps, from being given over to the vm system for allocation management,
or both.  After all the included and excluded regions have been added,
arm_physmem_init_kernel_globals() processes the regions into the global
dump_avail and phys_avail arrays and realmem and physmem variables that
communicate memory configuration to the rest of the kernel.

Convert all existing SoCs to use the new helper code.
2014-02-08 23:54:16 +00:00
Ian Lepore
007aeeced6 Remove the ARM_USE_SMALL_ALLOC option and code related to it.
This was an optimization used only by a few xscale platforms.  Part of
the optimization was to create a direct map for all physical pages, and
that resulted in making multiple mappings of pages in a way that bypassed
the logic in pmap.c to handle VIVT cache aliasing.  It also just generally
made the code more complex and hard to maintain for all SoCs.

Reviewed by:	cognet
2014-02-08 22:21:38 +00:00
Andrew Turner
9e4ed33024 Use abp_physaddr for the physical address over KERNPHYSADDR. This helps us
remove the need to load the kernel at a fixed address.
2014-02-06 20:35:33 +00:00
Andrew Turner
979d76c948 Remove STARTUP_PAGETABLE_ADDR from the ARM configs and replace it with
memory at the end of the kernel.

This helps reduce the SoC and board specific configuration required.

Reviewed by:	bsdimp
Tested by:	jmg (armeb), br
2014-01-28 09:12:04 +00:00
Eitan Adler
7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00
Ian Lepore
c6ff193255 Call cpu_setup() from the initarm() routine on platforms that don't use
the common FDT-aware initarm() in arm/machdep.c.

Pointed out by:	     cognet
Pointy hat to:	     ian
2013-11-21 01:08:10 +00:00
Ian Lepore
3110e7eed8 Move remaining code and data related to static device mapping into the
new devmap.[ch] files.  Emphasize the MD nature of these things by using
the prefix arm_devmap_ on the function and type names (already a few of
these things found their way into MI code, hopefully it will be harder to
do by accident in the future).
2013-11-04 22:45:26 +00:00
Ian Lepore
5dc7c6b4c1 Follow r257244; it's now necessary to include if_var.h. 2013-10-28 18:43:00 +00:00
Ian Lepore
6489412064 Remove #include <machine/frame.h> from all the arm code that doesn't
really need it.  That would be almost everywhere it was included.  Add
it in a couple files that really do need it and were previously getting
it by accident via another header.
2013-10-27 01:34:10 +00:00
Ian Lepore
69d75558a7 Remove all #include <machine/pmap.h> from arm code. It's already
included by vm/pmap.h, which is a prerequisite for arm/machine/pmap.h
so there's no reason to ever include it directly.

Thanks to alc@ for pointing this out.
2013-10-27 00:51:46 +00:00
Olivier Houchard
63e950fe80 - Use bus_dmamap_unload(), it is not optional.
- The new allocator won't return coherent memory for any size > PAGE_SIZE,
so don't assume we have coherent memory, and explicitely use
bus_dmamap_sync().
2013-10-22 21:51:07 +00:00
Olivier Houchard
6958ef4ef5 Typo fix. 2013-10-22 21:49:58 +00:00
Olivier Houchard
4798c89190 Increase the KVA available for xscale CPUs. 2013-10-17 22:12:32 +00:00
Jeff Roberson
5df87b21d3 Replace kernel virtual address space allocation with vmem. This provides
transparent layering and better fragmentation.

 - Normalize functions that allocate memory to use kmem_*
 - Those that allocate address space are named kva_*
 - Those that operate on maps are named kmap_*
 - Implement recursive allocation handling for kmem_arena in vmem.

Reviewed by:	alc
Tested by:	pho
Sponsored by:	EMC / Isilon Storage Division
2013-08-07 06:21:20 +00:00
Gabor Kovesdan
ab3f6b347e - Correct mispellings of the word occurrence
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de> (via private mail)
2013-04-17 11:40:10 +00:00
Dimitry Andric
27e644a80b Fix undefined behaviour in several gpio_pin_setflags() routines (under
sys/arm and sys/mips), squelching the clang 3.3 warnings about this.

Noticed by:	tinderbox and many irate spectators
Submitted by:	Luiz Otavio O Souza <loos.br@gmail.com>
PR:		kern/177759
MFC after:	3 days
2013-04-13 21:21:13 +00:00
Alan Cox
1f9d53d893 Eliminate a redundant #include: machine/pmap.h is already included
through vm/pmap.h.
2013-03-01 19:02:41 +00:00
Attilio Rao
ecf507c36b Complete r247297:
Remove unused inclusions of vm/vm_pager.h and vm/vnode_pager.h.

Sponsored by:	EMC / Isilon storage division
2013-02-28 00:18:56 +00:00
Alan Cox
5c9f7b1a91 Initialize vm_max_kernel_address on non-FDT platforms. (This should have
been included in r246926.)

The second parameter to pmap_bootstrap() is redundant.  Eliminate it.

Reviewed by:	andrew
2013-02-20 16:48:52 +00:00
Gleb Smirnoff
eb1b1807af Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags within sys.

Exceptions:

- sys/contrib not touched
- sys/mbuf.h edited manually
2012-12-05 08:04:20 +00:00
Andrew Turner
1161298251 Create a common set_stackptrs in sys/arm/machdep.c.
On single core devices set_stackptrs is only ever called with cpu = 0 in
initarm and will be identical to the existing function. On SMP this needs
to be implemented for sys/arm/mp_machdep.c, but the implementations are
identical for each SoC.
2012-09-22 06:41:56 +00:00