Commit Graph

1789 Commits

Author SHA1 Message Date
Ganbold Tsagaankhuu
bf4e1ed0bc Define gpio constants rather than using enum.
Fix pull-up and pull-down values of gpio.
According to A10 user manual possible pull register
values are 00 Pull-up/down disable, 01 Pull-up, 10 Pull-down.

Approved by: gonzo@
2013-02-19 02:01:35 +00:00
Alan Cox
837a2c513d Place a cap on the size of the kernel's heap, also known as the kmem
submap.  Otherwise, after r246204, the auto-scaling logic in kern_malloc.c
tries to create a kmem submap that consumes the entire kernel map on a
Pandaboard with 1 GB of RAM.

Tested by:	gonzo
2013-02-18 01:22:20 +00:00
Alan Cox
fc23011bc3 On arm, like sparc64, the end of the kernel map varies from one type of
machine to another.  Therefore, VM_MAX_KERNEL_ADDRESS can't be a constant.
Instead, #define it to be a variable, vm_max_kernel_address, just like we
do on sparc64.

Reviewed by:	kib
Tested by:	ian
2013-02-18 01:02:48 +00:00
Oleksandr Tymoshenko
d3d7f709ce - Add hw.bcm2835.sdhci.hs tunable to enable/disable highspeed mode in
SDHCI driver
  Suggested by: Daisuke Aoyama

- Set initilization sequence frequency to 8MHz. It should fix Data CRC
    errors. Standard requires initialization sequence to be executed
    at 400KHz but on this hardware low frequncies seems to cause
    Data CRC errors.

    Value was derived from analyzing hardware signals after
    Raspberry Pi is powered up. Before any data is read though DATA line
    adapter's clock frequency is changed to 8MHz.

    Modern cards should function fine at 8MHz but for older MMC cards it
    can be overriden by setting hw.bcm2835.sdhci.min_freq tunable.
2013-02-17 00:23:42 +00:00
Ian Lepore
7a4accc1f0 In _bus_dmamap_addseg(), the return value must be zero for error, or the size
actually added to the segment (possibly smaller than the requested size if
boundary crossings had to be avoided).
2013-02-16 20:43:16 +00:00
Ian Lepore
3cbc324925 Set map->pmap before _bus_dmamap_count_pages() tries to use it.
Obtained from:	Thomas Skibo <ThomasSkibo@sbcglobal.net>
2013-02-15 23:41:47 +00:00
Oleksandr Tymoshenko
aaa54dd138 Enable USB1 (which is EHCI0) for Allwinner A10
Tested by: ganbold@
2013-02-15 21:29:03 +00:00
Oleksandr Tymoshenko
e589740522 Fix copy-paste error in bus_space_unmap argument
While I'm at it - fix some style(9) issues

Submitted by:	Mikael Urankar
2013-02-15 21:24:21 +00:00
Konstantin Belousov
dd0b4fb6d5 Reform the busdma API so that new types may be added without modifying
every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
2013-02-12 16:57:20 +00:00
Oleksandr Tymoshenko
bb2902189e Remove debug output 2013-02-12 07:27:40 +00:00
Oleksandr Tymoshenko
2655166c71 A10 reset mechanism is the same for all boards in this family so remove
redundant reset function implementation pointer. We might want to
ressurect it later when support for other Allwinner chips is introduced.
2013-02-11 11:33:56 +00:00
Oleksandr Tymoshenko
3748deb755 Add watchdog driver for Allwinner A10 2013-02-11 11:31:23 +00:00
Tim Kientzle
3d98a28bea Fix breakage introduced in r246318. 2013-02-09 21:36:14 +00:00
Ganbold Tsagaankhuu
0a8038e3d7 Use and set gpio pin to high to power up usb.
Approved by: gonzo@
2013-02-06 01:03:13 +00:00
Ganbold Tsagaankhuu
3c9606d74e Remove two dead assignments and
make use of sc more explicit and clear

Submitted by: Christoph Mallon
Approved by: gonzo@
2013-02-05 04:13:34 +00:00
Ganbold Tsagaankhuu
d9a1428cab Add gpio driver and update dts and kernel config accordingly.
Approved by: gonzo@
2013-02-05 02:25:13 +00:00
Andrew Turner
b9f7a584fd Use the STACKALIGN macro to alight the stack rather than with a magic mask.
Submitted by:	Christoph Mallon <christoph.mallon gmx.de>
2013-02-04 09:48:50 +00:00
Tim Kientzle
ae6aefaf57 Another overhaul of the CPSW driver for BeagleBone
Major changes:
  * Finally tracked down the flow control setting that
    seems to have been causing TX stalls and watchdog timeouts
  * RX and TX paths now share a lot more code
  * TX interrupt is no longer used; we instead GC finished
    tx queue entries at the bottom of the start routine.
  * TX start now queues fragmented packets directly; it only
    invokes defrag() for occasional very fragmented packets.
  * "sysctl dev.cpsw" dumps controller statistics and queue counts
  * Host Error Interrupt will give extensive debugging information
    if the controller chokes on the queued data.
2013-02-03 01:08:01 +00:00
Tim Kientzle
de52ceebca Tweaks to standard BEAGLEBONE config, as recently discussed
on FreeBSD-ARM.
2013-02-02 06:01:57 +00:00
Andre Oppermann
1211375f6e Add VM_KMEM_SIZE_SCALE parameter set to 2 (50%) for all ARM platforms.
VM_KMEM_SIZE_SCALE specifies which fraction of the available physical
memory, after deduction of the kernel itself and other early statically
allocated memory, can be used for the kmem_map.  The kmem_map provides
for all UMA/malloc allocations in KVM space.

Previously ARM was using a fixed kmem_map size of (12*1024*1024) = 12MB
without regard to effectively available memory.  This is too small for
recent ARM SoC with more than 128MB of RAM.

For reference a description of others related kmem_map parameters:

 VM_KMEM_SIZE		default start size of kmem_map if SCALE is
			not defined
 VM_KMEM_SIZE_MIN	hard floor on the kmem_map size
 VM_KMEM_SIZE_MAX	hard ceiling on the kmem_map size
 VM_KMEM_SIZE_SCALE	fraction of the available real memory to
			be used for the kmem_map, limited by the
			MIN and MAX parameters.

Tested by:	ian
MFC after:	1 week
2013-02-01 10:26:31 +00:00
Konstantin Belousov
b4047f838c Use pmap_kextract() instead of inlining the page table walk.
Remove the comment referencing non-existing code.

Reviewed by:	cognet, ian (previous version)
Tested by:	ian
2013-01-31 20:53:31 +00:00
Ganbold Tsagaankhuu
458690fe41 Add simple clock driver and ehci glue code for a10
Update dts and kernel config

Approved by: gonzo@
2013-01-29 07:21:50 +00:00
Damjan Marion
bcf82d6e8c Fix case for some signal names.
Submitted by:   Emmanuel Vadot <elbarto@megadrive.org>
2013-01-28 09:23:38 +00:00
Damjan Marion
1a8655aa16 Filled in missing pads for AM335x / Beaglebone.
Submitted by:   Emmanuel Vadot <elbarto@megadrive.org>
2013-01-28 09:11:04 +00:00
Ian Lepore
32c7ac38ed Fix off-by-one errors in low-level arm9 and arm10 cache maintenance routines.
In all the routines that loop through a range of virtual addresses, the loop
is controlled by subtracting the cache line size from the total length of the
request.  After the subtract, a 'bpl' instruction was used, which branches if
the result of the subtraction is zero or greater, but we need to exit the
loop when the count hits zero.  Thus, all the bpl instructions in those loops
have been changed to 'bhi' (branch if greater than zero).

In addition, the two routines that walk through the cache using set-and-index
were correct, but confusing.  The loop control for those has been simplified,
just so that it's easier to see by examination that the code is correct.

Routines for other arm architectures and generations still have the bpl
instruction, but compensate for the off-by-one situation by decrementing
the count register by one before entering the loop.

PR:		arm/174461
Approved by:	cognet (mentor)
2013-01-27 20:28:14 +00:00
Ian Lepore
ecef37500f Restore the irq number to the display string; I fumbled this in the previous
commit while trying to make the code internally self-consistant.

Approved by:	cognet (mentor)
Obtained from:	Christoph Mallon
2013-01-27 20:16:50 +00:00
Ian Lepore
651c11660d Remove the remaining references to the now-obsolete sheevaplug config files,
which have been replaced by the generic db88f6xxx config which works for all
kirkwood-series chips.

Approved by:	cognet (mentor)
2013-01-27 20:10:29 +00:00
Ian Lepore
ecfc48a031 Add support for the GlobalScale Technologies DreamPlug computer.
This adds support for version 10, revision 01, but it should also work
without changes for the 0901 model, at least until we get drivers for the
two different wifi chips involved.

Many users contributed to and tested the various patchsets floating around
for the past year that have eventually evolved into this checkin, most notably
Richard Neese who provided the bulk of the kernel config file.

Approved by:	cognet (mentor)
2013-01-27 01:17:37 +00:00
Ian Lepore
427dadb03c Add a default do-nothing implementation of fdt_pci_devmap() using a weak alias,
so that we don't need an empty implementation of it for every Marvell platform
that has no PCI.  This allows the removal of the SheevaPlug-specific stub and
config files, and eliminates the need to add similar stubs for future models.

Marvell platforms that do expose PCI are compiled with 'device pci' which
causes the real (non-weak) implementation in dev/fdt/fdt_pci.c to be used.

Approved by:	cognet (mentor)
2013-01-27 00:39:02 +00:00
Ian Lepore
922c0acd57 Fix a buffer overrun while pre-formatting the names array, perpetrated in
the prior commit.  Use essentially the same sprintf() statement for both
formatting and pre-formatting, and use a format string which eliminates the
need for an extra temporary buffer when formatting the name.

Noted by:   	  Christoph Mallon
Pointy hat to:	  ian
Approved by:	  cognet (mentor)
2013-01-26 20:16:58 +00:00
Andrew Turner
494459b56b Align td_frame as it will be placed into the sp register which must be
8 byte aligned on ARM EABI.
2013-01-26 08:55:04 +00:00
Ganbold Tsagaankhuu
c0c4446155 Fix method of naming compatible string to follow
"<manufacturer>,<model>" as described in
http://www.devicetree.org/Device_Tree_Usage

Reviewed by: andrew@
Approved by: gonzo@
2013-01-25 07:21:22 +00:00
Ganbold Tsagaankhuu
e62a1d7908 Fix timer to support oneshot and periodic mode
Use 64 bit high and low counter for timecounter and delay

Reviewed by: mav@, ian@
Approved by: gonzo@
2013-01-24 09:36:50 +00:00
Tim Kientzle
296aaa6046 Clarify the error messages for unrecognized pins and muxtypes. 2013-01-19 17:12:23 +00:00
Ian Lepore
ae4f863c89 Eliminate the need for an intermediate array of indices into the arrays of
interrupt counts and names, by making the names into an array of fixed-length
strings that can be directly indexed.  This eliminates extra memory accesses
on every interrupt to increment the counts.

As a side effect, it also fixes a bug that would corrupt the names data
if a name was longer than MAXCOMLEN, which led to incorrect vmstat -i output.

Approved by:	cognet (mentor)
2013-01-19 00:50:12 +00:00
Andrew Turner
9fd57b44e4 * Correct KINFO_PROC_SIZE for ARM EABI.
* Update the syscall interface to pass in the syscall value in register r7.
2013-01-17 09:52:35 +00:00
Andrew Turner
29ce0a2aff Implement stack unwinding based on section 9 of the "Exception handling ABI
for the ARM architecture" documentation. The unwind tables are currently
not stored in the kernel but will be added later.
2013-01-17 09:47:56 +00:00
Ganbold Tsagaankhuu
486beae0a6 Fix style bugs
Use defined constant instead of variable for reg_shift
Change u_int32_t to uint32_t

Approved by: gonzo
Suggested by: bde, wkoszek
2013-01-16 08:04:55 +00:00
Olivier Houchard
19b73c0586 Use armv7_drain_writebuf() and armv7_context_switch, instead of the arm11
variants.
2013-01-15 22:11:28 +00:00
Olivier Houchard
a7d20a4864 Only spin on the blocked_lock for SCHED_ULE+SMP, as it's done on the other
arches.
2013-01-15 22:09:11 +00:00
Olivier Houchard
58fdb5f3e6 Don't define rel/acq variants of some atomic operations as the regular
version for armv6.
2013-01-15 22:08:03 +00:00
Ganbold Tsagaankhuu
3415f14f85 Add mistakenly removed third clause to license
Reviewed by: joel
2013-01-15 09:56:20 +00:00
Ganbold Tsagaankhuu
f97c5511c0 Fix formatting of license according to share/examples/etc/bsd-style-copyright
Reviewed by: joel
2013-01-15 09:39:11 +00:00
Ganbold Tsagaankhuu
2b80c23a85 Fix license to follow standard license template
Reviewed by: joel
2013-01-15 09:31:13 +00:00
Ganbold Tsagaankhuu
ebc93265c7 Initial support for Allwinner A10 SoC (Cubieboard)
Add simple console driver
	Add interrupt handling and timer codes
	Add kernel config file
	Add dts file
Approved by: gonzo
2013-01-15 08:26:16 +00:00
Andrew Turner
eb23ab3120 Update sigcode to use both the current ABI and FreeBSD's version of the
ARM EABI syscall calling convention.

The current ABI encodes the syscall number in the instruction. This causes
issues with the thumb mode as it only has 8 bits to encode this value and
we have too many system calls and by using a register will simplify the
code to get the syscall number in the kernel.

With the ARM EABI we reuse the Linux calling convention by storing the
value in r7. Because of this we use both methods to encode the syscall
number in this function.
2013-01-14 09:11:18 +00:00
Aleksandr Rybalko
f101fd7fdc Enable syscons framebuffer support for bcm2835. It makes possible to run Xorg
on Raspberry Pi.
o convert mmap address to physical.
o add FBIOGTYPE ioctl handler - allow to get screen resolution by new
    xf86-video-scfb driver.
Originally designed for "Efika MX" project.

Sponsored by:	FreeBSD Foundation
2013-01-13 22:05:46 +00:00
Oleksandr Tymoshenko
0b5eb45655 Remove accidentally copypasted comment
Spotted by: gavin
2013-01-13 21:32:40 +00:00
Olivier Houchard
6db9b3528e Define IPI_IRQ_START and IPI_IRQ_END. 2013-01-09 01:54:17 +00:00
Olivier Houchard
00100b0eec Use get_pcpu() instead of using pcpup, as it's wrong for SMP.
Submitted by:	Lukasz Plachno <luk@semihalf.com>
2013-01-09 01:52:28 +00:00