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Commit Graph

2886 Commits

Author SHA1 Message Date
Alexander V. Chernikov
603eaf792b Renove faith(4) and faithd(8) from base. It looks like industry
have chosen different (and more traditional) stateless/statuful
NAT64 as translation mechanism. Last non-trivial commits to both
faith(4) and faithd(8) happened more than 12 years ago, so I assume
it is time to drop RFC3142 in FreeBSD.

No objections from:	net@
2014-11-09 21:33:01 +00:00
Ian Lepore
77f4973eec Strengthen the sanity checking of busdma tag parameters.
It turns out an alignment of zero can lead to an endless loop in the
vm reservations code, so specifically disallow that.  The manpage says
hardware which can do dma at any address should use a value of one, which
hints at the forbiddeness of zero without exactly saying it.  Several
other conditions which could lead to insanity in working with the tag are
also checked now.

Every existing call to bus_dma_tag_create() (about 680 of them) was
eyeballed for violations of these things, and two alignment=0 glitches
were fixed.  It's possible something was missed, but overall this
shouldn't lead to any arm users suddenly experiencing failures.
2014-11-06 19:14:58 +00:00
Kevin Lo
cde04bfa59 Fix usage of kern_getenv(). 2014-10-31 15:07:51 +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
Konstantin Belousov
4f3dc90023 Add fueword(9) and casueword(9) functions. They are like fuword(9)
and casuword(9), but do not mix value read and indication of fault.

I know (or remember) enough assembly to handle x86 and powerpc.  For
arm, mips and sparc64, implement fueword() and casueword() as wrappers
around fuword() and casuword(), which means that the functions cannot
distinguish between -1 and fault.

On architectures where fueword() and casueword() are native, implement
fuword() and casuword() using fueword() and casuword(), to reduce
assembly code duplication.

Sponsored by:	The FreeBSD Foundation
Tested by:	pho
MFC after:	2 weeks (ia64 needs treating)
2014-10-28 15:22:13 +00:00
Ian Lepore
81d54b79fc Remove the ARM_DEVICE_MULTIPASS option and make its effect be the default.
Multipass device attachment was tested on many arm platforms by users and
only success was reported on the arm@ mailing list.  This is just the
long-delayed followup of making it the default.

Multipass attachment is necessary when using vendor-supplied FDT data,
because our devices may need to be attached in a different order than they
are described in the FDT data.
2014-10-26 18:30:35 +00:00
Alan Cox
d6e53ebe5e By the time that pmap_init() runs, vm_phys_segs[] has been initialized. Obtaining
the end of memory address from vm_phys_segs[] is a little easier than obtaining it
from phys_avail[].

Discussed with:	Svatopluk Kraus
2014-10-26 17:56:47 +00:00
Luiz Otavio O Souza
e50c624155 Add an iicbus_reset() method to bcm2835_bsc. While it is generally not
used for kernel devices it is used by i2c(8).

This fix the 'error: Device not configured' when i2c(8) tries to reset the
controller, as an example:

# i2c -r
Resetting I2C controller on /dev/iic0: error: Device not configured

For now use conservative settings for default i2c speeds.

MFC after:	1 week
2014-10-24 22:06:21 +00:00
Luiz Otavio O Souza
1210d2685f Fix cpsw_detach() to not panic when called from cpsw_attach().
For an unkown reason (at moment), sometimes if_cpsw cannot read from PHY
and fails to attach calling cpsw_detach() which end up in a panic.

Fix it by doing the proper check before detach the miibus and also fix the
leak of few variables.

And to actually make it work, ether_ifattach() has to be moved to the end
of cpsw_attach() to avoid a race where calling ether_ifdetach() before
domain_init() (which will only run later on) would make it crash at
INP_INFO_RLOCK() on in_pcbpurgeif0().

Tested on:	BBB (am335x)
MFC after:	1 week
2014-10-24 21:08:02 +00:00
John Baldwin
7d313e7bdb Add COMPAT_FREEBSD9 and COMPAT_FREEBSD10 options to wrap code that
provides compatability for FreeBSD 9.x and 10.x binaries.  Enable
these options in kernel configs that enable other COMPAT_FREEBSD<n>
options.
2014-10-24 19:58:24 +00:00
Luiz Otavio O Souza
53129bd939 Fix a bug where DMA maps created with bus_dmamap_create() won't increment
the map count and without being able to keep track of the current map
allocation, bus_dma_tag_destroy() will fail to proceed and will return
EBUSY even after all the maps have been correctly destroyed with
bus_dmamap_destroy().

Found while testing the detach method of a NIC.

Tested on:	BBB (am335x)
Reviewed by:	cognet, ian
MFC after:	1 week
2014-10-24 19:18:39 +00:00
Ian Lepore
a5c8d99b26 Accept the documented FDT compatible string for the PL310 cache controller
as well as the non-standard string we've been using for a couple years.
2014-10-24 15:44:29 +00:00
Ian Lepore
2c746c6a09 Install a temporary workaround to avoid problems in fdt data with linux's
workaround for an imx6 chip erratum.  Linux works around the bug with
changes in fdt data that we can't currently handle, so to enable running
with standard vendor-supplied fdt data, this watches for an attempt to map
the gpio1_6 interrupt and remaps it back to the standard ethernet interrupt.

This can be undone when the intrng project is completed and our gpio drivers
can also be interrupt controllers.
2014-10-23 22:21:22 +00:00
Ian Lepore
2586993bf1 Unconditionally enable the clocks for all imx6 devices that we have drivers
for, or that are required to run the chip (such as busses).  Turn off all
the devices we don't yet have drivers for.

Some day we will have a fully functional imx6 clock driver so that we can
manage clocks based on fdt data.  This will have to do until then.
2014-10-23 03:13:14 +00:00
Ruslan Bukin
2d3f1b38a9 Provide a character device allowing us to access BERI memory regions.
Sponsored by:	DARPA, AFRL
2014-10-22 11:30:03 +00:00
Ruslan Bukin
8b62915e24 Add driver for Micrel KSZ9021 Gigabit Ethernet Transceiver (PHY).
Sponsored by:	DARPA, AFRL
2014-10-21 09:14:16 +00:00
Hans Petter Selasky
f0188618f2 Fix multiple incorrect SYSCTL arguments in the kernel:
- Wrong integer type was specified.

- Wrong or missing "access" specifier. The "access" specifier
sometimes included the SYSCTL type, which it should not, except for
procedural SYSCTL nodes.

- Logical OR where binary OR was expected.

- Properly assert the "access" argument passed to all SYSCTL macros,
using the CTASSERT macro. This applies to both static- and dynamically
created SYSCTLs.

- Properly assert the the data type for both static and dynamic
SYSCTLs. In the case of static SYSCTLs we only assert that the data
pointed to by the SYSCTL data pointer has the correct size, hence
there is no easy way to assert types in the C language outside a
C-function.

- Rewrote some code which doesn't pass a constant "access" specifier
when creating dynamic SYSCTL nodes, which is now a requirement.

- Updated "EXAMPLES" section in SYSCTL manual page.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
2014-10-21 07:31:21 +00:00
Ian Lepore
52d99877ba Attach the imx6 CCM driver during BUS_PASS_CPU. It controls the clocks
for most on-chip devices and needs to be available before other drivers
start attaching and asking to have their clocks enabled.
2014-10-20 23:34:47 +00:00
Ian Lepore
c90fadc0d2 The imx6 hardware is fast enough to make good use of however much
timecounter resolution is available, so ask for a 1 GHz frequency.  It
won't actually get one that fast, but that'll get the fastest available
clock and use a divisor of 1 (probably 132 or 66mhz on current hardware).
2014-10-20 23:32:34 +00:00
Luiz Otavio O Souza
71b37cb9ae Fix the mtx_sleep() error checking, catch all errors and not only
EWOULDBLOCK.

Do not print any message at errors.  The errors are properly sent to upper
layers which should be able to deal with it, including printing the errors
when they need to.

The error message was quite annoying while scanning the i2c bus.

MFC after:	1 week
2014-10-20 18:04:20 +00:00
Luiz Otavio O Souza
a141b6722c Add another wakeup() after actually set the bus as free.
This fix a race where the threads waiting for the bus would wake up early
and still see bus as busy.

While here, give a better description to wmesg for the two use cases we
have (bus and io waiting).

MFC after:	1 week
2014-10-20 13:36:52 +00:00
Andrew Turner
199de3d71a Allow the armv6 kernel to be build with PHYSADDR undefined. The kernel
will now find the virtual to physical mapping for libkvm to use at
runtime. This makes PHYSADDR redundant, however keep it around to give
everyone a chance to update their libkvm.

MFC after:	1 week
2014-10-19 21:03:42 +00:00
Andrew Turner
58c47a70a3 Allow libkvm to get the kernel va to pa delta without the need for
physaddr. This should allow for a kernel where PHYSADDR and KERNPHYSADDR
are both undefined.

For now libkvm will use the old method of reading physaddr and kernaddr
to allow it to work with old kernels. This could be removed in the future
when enough time has passed.

Differential Revision:	https://reviews.freebsd.org/D939
MFC after:	1 week
2014-10-19 20:23:31 +00:00
Ian Lepore
a2d27ff80e Attach this driver during BUS_PASS_BUS and move the cpu init code to a
bus_new_pass() handler so it doesn't happen until BUS_PASS_CPU.  This allows
the anatop driver to outbid the generic simplebus driver (which the FDT
data describes as compatible).

Some day when we handle power regulators, this driver may actually
become a functional simplebus and attach the regulators as children, as
described in the FDT data.
2014-10-19 18:41:22 +00:00
Rui Paulo
c5422af95f Style changes as pointed out by stas@.
MFC after:	1 week
2014-10-19 17:55:04 +00:00
Ruslan Bukin
b0da449e60 Add driver for BERI soft processor 'ring buffer' device.
Ring device provides a way for communicate to BERI
peripherals such as BERI debug unit and console.

Sponsored by:	DARPA, AFRL
2014-10-19 16:26:49 +00:00
Luiz Otavio O Souza
7c26b0a7c8 Add a workaround needed to fix a bug of Arasan Host Controller where it may
lose the contents of consecutive writes (that happens within two SD card
clock cycles).

This fixes the causes of instability during the SD card detection and
identification on Raspberry Pi (which happens at 400 kHz and so was much
more vulnerable to this issue).

Remove the previous workaround which clearly can't provide the same effect.

MFC after:	1 week
Relnotes:	yes
2014-10-18 19:01:07 +00:00
Luiz Otavio O Souza
bcf1cd88da Fix the chan address for mtx_sleep() on bus wait. Without this fix the
threads waiting for the bus would never wake.

X-MFC-With: r270230
2014-10-18 18:27:24 +00:00
Andrew Turner
b6c7dacfc9 Rework the Ti GPIO code to allow for both the OMAP4 and AM335X attachments
to be present. Thsi creates a new per-SoC driver that handles probe and
setting/getting the gpio flags.

Differential Revision:	https://reviews.freebsd.org/D943
Reviewed by:	loos, rpaulo
MFC after:	1 week
2014-10-18 17:51:34 +00:00
Rui Paulo
daed8c66c5 Remove an unused mutex.
MFC after:	1 week
2014-10-18 17:36:57 +00:00
Rui Paulo
b79090d6db Make the ti_mbox and ti_pruss drivers optional.
MFC after:	1 week
2014-10-18 17:00:55 +00:00
Rui Paulo
2ffc65f982 Add a driver for the TI watchdog.
The TI watchdog timer is present on BeagleBone's.  Since 2014, U-Boot
has been booting the BeagleBone with the watchdog enabled.  We need to
disable it on boot to avoid a spurious reset.
The timer isn't exactly precise, but it will do as a watchdog.  This
is also a reflection of the watchdog(9) API.

In the future, we could handle interrupts, but the watchdog(9) API
needs to be a bit smarter before that can happen.

Differential Revision:	https://reviews.freebsd.org/D965
Reviewed by:	andrew
MFC after:	1 week
Relnotes:	yes
2014-10-18 16:59:21 +00:00
Andrew Turner
5c8f95d56d Add an elf not so kgdb detects the kernel as a FreeBSD elf file. The
ELFNOTE macro is based on one from the FreeBSD/ARM Xen tree [1].

Obtained from:	Julien Grall <julien.grall AT linaro.org> [1]
2014-10-18 13:38:04 +00:00
Davide Italiano
2be111bf7d Follow up to r225617. In order to maximize the re-usability of kernel code
in userland rename in-kernel getenv()/setenv() to kern_setenv()/kern_getenv().
This fixes a namespace collision with libc symbols.

Submitted by:   kmacy
Tested by:      make universe
2014-10-16 18:04:43 +00:00
Rui Paulo
bbcf1f62b6 Remove the "Unable to unwind further" message from DDB.
The ARM version of DDB is supposedly reliable enough making this
message benign.
2014-10-16 01:48:39 +00:00
Andrew Turner
917256cd36 Uncomment general options from the Pandaboard config. These are in other
configs and there is no reason for them not to be here.
2014-10-14 14:32:58 +00:00
Andrew Turner
f7b9150ee9 Make the ti_padstate_devmap arrays ststic, they are only used with the
file where they are defined.
2014-10-14 13:24:25 +00:00
Andrew Turner
6e97fd7dbf Move the sdhci option to files.ti, it's common to both SoCs. 2014-10-13 16:40:40 +00:00
Andrew Turner
623b63e761 Use a switch on ti_chip() to find which SoC we are on. This allow us t
only enable support for the SoCs we are built for.
2014-10-13 16:33:08 +00:00
Andrew Turner
88e1e17451 Remove ti_mmchs.c, it has been replaced by ti_sdhci.c. 2014-10-13 16:20:04 +00:00
Andrew Turner
56f4208d56 Remove the need for files.beaglebone and std.beaglebone by moving the one
option they defined into files.am335x.
2014-10-13 16:16:32 +00:00
Andrew Turner
b0d1c7102e Sort the files in the am355x directory. 2014-10-13 16:12:28 +00:00
Andrew Turner
56d8b96cbc Start removing the omap3 support. In base it was only ever a header and a
few changes to drivers, no kernel config was added. As the SoCs are quite
old and the code is unmaintained start the process of removing support by
deleting the header file and code that depends on it along with the macro
SOC_OMAP3. Other Ti SoCs shouldn't be affected, other than for us to have
less code to maintain.

Differential Revision:	https://reviews.freebsd.org/D936
Reviewed by:	rpaulo, loos
2014-10-13 15:35:08 +00:00
Ruslan Bukin
d4d630aebe o Add machine-dependent SMP part
o Enable SMP

Sponsored by:	DARPA, AFRL
2014-10-10 14:35:51 +00:00
Mark Johnston
5eaae1411f Pass up the error status of minidumpsys() to its callers.
PR:		193761
Submitted by:	Conrad Meyer <conrad.meyer@isilon.com>
Sponsored by:	EMC / Isilon Storage Division
2014-10-08 20:25:21 +00:00
Ruslan Bukin
41709d23c4 Add driver for Synopsys DesignWare Mobile Storage Host Controller.
Sponsored by:	DARPA, AFRL
2014-10-07 17:39:30 +00:00
Ganbold Tsagaankhuu
0434c163cc Allow timer0 to run at full 24MHz not at 24MHz/16 by setting prescale to 1.
Approved by:    stas (mentor)
2014-10-02 06:00:55 +00:00
Andrew Turner
293b5c2221 Split you the syscall handling to a separate file. 2014-10-01 12:44:16 +00:00
Ian Lepore
3a79cdc73a When building the lists of available memory, actually honor the exclusion
flags, like the comment says it does.

Pointy hat:	ian
Submitted by:	Svatopluk Kraus <onwahe@gmail.com>
2014-09-30 21:28:05 +00:00
Andrew Turner
3a08e1e31c Make sure __ARM_ARCH is defined in sysreg.h by including acle-compat.h 2014-09-30 13:32:45 +00:00
Kevin Lo
b50afa88b0 Fix the definitioin of AT91SAM9G45_IRQ_PIOE and rename it to
AT91SAM9G45_IRQ_PIODE.  According to the data sheet, both PIOD and PIOE
use the same IRQ.

While here remove duplicate definitions.
2014-09-27 14:39:00 +00:00
Andrew Turner
1af789ed11 Add machine/sysreg.h to simplify accessing the system control coprocessor
registers and use it in the ARMv7 CPU functions.

The sysreg.h file has been checked by hand, however it may contain errors
with the comments on when a register was first introduced. The ARMv7 cpu
functions have been checked by compiling both the previous and this version
and comparing the md5 of the object files.

Submitted by:	Svatopluk Kraus <onwahe at gmail.com>
Submitted by:	Michal Meloun <meloun at miracle.cz>
Reviewed by:	ian, rpaulo
Differential Revision: https://reviews.freebsd.org/D795
2014-09-27 09:57:34 +00:00
Kevin Lo
ce71bdcad4 Remove a bogus AIC.
Reviewed by:	imp
2014-09-27 02:15:45 +00:00
Kevin Lo
bec21f7149 Fix the size of AT91SAM9260_PIT_SIZE. 2014-09-26 09:08:09 +00:00
Kevin Lo
d9197e6f81 Fix typos. 2014-09-26 09:07:02 +00:00
Ruslan Bukin
5d43fd685b Add driver for Synopsys DesignWare 3504-0 Universal 10/100/1000
Ethernet MAC.

Sponsored by:	DARPA, AFRL
2014-09-25 18:03:14 +00:00
Gavin Atkinson
265f42be76 Move the ARM Samsung s3c2xx0 support files into the samsung directory, to
match other platforms.

Discussed with:	andrew
2014-09-25 11:38:26 +00:00
Roger Pau Monné
c98a2727cc ddb: allow specifying the exact address of the symtab and strtab
When the FreeBSD kernel is loaded from Xen the symtab and strtab are
not loaded the same way as the native boot loader. This patch adds
three new global variables to ddb that can be used to specify the
exact position and size of those tables, so they can be directly used
as parameters to db_add_symbol_table. A new helper is introduced, so callers
that used to set ksym_start and ksym_end can use this helper to set the new
variables.

It also adds support for loading them from the Xen PVH port, that was
previously missing those tables.

Sponsored by: Citrix Systems R&D
Reviewed by:	kib

ddb/db_main.c:
 - Add three new global variables: ksymtab, kstrtab, ksymtab_size that
   can be used to specify the position and size of the symtab and
   strtab.
 - Use those new variables in db_init in order to call db_add_symbol_table.
 - Move the logic in db_init to db_fetch_symtab in order to set ksymtab,
   kstrtab, ksymtab_size from ksym_start and ksym_end.

ddb/ddb.h:
 - Add prototype for db_fetch_ksymtab.
 - Declate the extern variables ksymtab, kstrtab and ksymtab_size.

x86/xen/pv.c:
 - Add support for finding the symtab and strtab when booted as a Xen
   PVH guest. Since Xen loads the symtab and strtab as NetBSD expects
   to find them we have to adapt and use the same method.

amd64/amd64/machdep.c:
arm/arm/machdep.c:
i386/i386/machdep.c:
mips/mips/machdep.c:
pc98/pc98/machdep.c:
powerpc/aim/machdep.c:
powerpc/booke/machdep.c:
sparc64/sparc64/machdep.c:
 - Use the newly introduced db_fetch_ksymtab in order to set ksymtab,
   kstrtab and ksymtab_size.
2014-09-25 08:28:10 +00:00
Ian Lepore
6048caab6b Make the ARM MPCore Timer driver work with published standard FDT bindings.
We've always considered the mpcore timers to be a single monolithic device
and we defined our own fdt binding for it with our own compat string.  The
published bindings treat the timers as two separate devices, a global
timer and a "timer-watchdog" device for the per-cpu private timers.  Thus
our binding has two tuples in the regs property, one set of registers for
the global timer and one for the private timers.  The published bindings
have two separate devices, each with a single set of registers.  (Note that
we don't use the optional watchdog feature of the hardware.)

These changes add the compat strings for the published bindings.  If our
own compat string appears, we expect to get two sets of memory resources.
For the published bindings, there's only one set of memory resources, and
only the private timers have an associated interrupt.

The other major change is that there can no longer be a single global var
for the softc pointer because now there may be multiple devices at
runtime.  Since the global timer is used only as a timecounter and the
private timers only as eventtimers, and there will only be one of each,
those are now the pointers which are global, and the priv fields of those
structures backlink to the device softc.
2014-09-20 14:49:21 +00:00
Ganbold Tsagaankhuu
2fb98875cf Fix typo in comment.
Disable AHB clock gate for ehci0.

Approved by:	stas (mentor)
2014-09-20 09:18:58 +00:00
Gleb Smirnoff
6625a48525 Mechanically convert to if_inc_counter(). 2014-09-19 09:20:16 +00:00
Ian Lepore
7cb146ae26 The private peripheral interrupts start at offset 16, not 0. Also, use
names rather than inline mystery constants for these offsets.

Pointed out by:	andrew
2014-09-15 15:36:00 +00:00
Ian Lepore
952ded804e Use gic_decode_fdt() rather than a local routine to parse fdt interrupt
properties.  Move fdt_pic_table and fdt_fixup_table into imx6_machdep.c,
which means imx6 doesn't need imx_common.c anymore.
2014-09-14 23:48:18 +00:00
Ian Lepore
0e390441a7 Add a common routine for parsing FDT data describing an ARM GIC interrupt.
In the fdt data we've written for ourselves, the interrupt properties
for GIC interrupts have just been a bare interrupt number.  In standard
data that conforms to the published bindings, GIC interrupt properties
contain 3-tuples that describe the interrupt as shared vs private, the
interrupt number within the shared/private address space, and configuration
info such as level vs edge triggered.

The new gic_decode_fdt() function parses both types of data, based on the
#interrupt-cells property.  Previously, each platform implemented a decode
routine and put a pointer to it into fdt_pic_table.  Now they can just
list this function in their table instead if they use arm/gic.c.
2014-09-14 21:21:03 +00:00
Ian Lepore
4a396d7a67 Add compat strings for all the flavors of GIC this driver should support.
Also allow the driver to attach to ofwbus as well as simplebus, some FDT
data puts the root interrupt controller on the root bus.
2014-09-14 17:47:04 +00:00
Ian Lepore
67993f6aa7 Fix an undefined variable that was accidentally not causing an error.
The code had references to both intr_offset and intr_parent variable names
as referring to the parent interrupt node.  The intr_parent variable
wasn't actually defined anywhere, but the only references to it were as
an argument to a macro that didn't use that argument in expansion, so
the undefined variable accidentally didn't cause an error.

The intr_parent name makes more sense in context, so change all occurrances
of intr_offset to intr_parent.
2014-09-14 17:36:57 +00:00
Ian Lepore
20250ee1ab Add a comment giving an overview of the driver. Remove leftover debugging. 2014-09-14 16:12:43 +00:00
Ian Lepore
7ddf24b350 Replace the imx5 and imx6 iomux drivers with a single common driver that
uses the new fdt_pinctrl interface.
2014-09-13 20:09:34 +00:00
Ian Lepore
d6c7df9860 Convert the at91_pinctrl driver to use the new fdt_pinctrl interface. 2014-09-13 19:59:16 +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
Ruslan Bukin
6ca0b78179 Add Reset Manager driver. This driver provides generic way to reset
and provides sysctl tunables for enable/disable FPGA<->HPS bridges.

Sponsored by:	DARPA, AFRL
2014-09-11 18:12:28 +00:00
Andrew Turner
fad7eeb196 Rename pmap_kenter_temp to pmap_kenter_temporary to be consistent with the
other architectures with this function.

Submitted by:	Svatopluk Kraus <onwahe at gmail.com>
Submitted by:	Michal Meloun <meloun at miracle.cz>
2014-09-11 10:53:57 +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
Andrew Turner
d7f129a3cb Add more register values to armreg.h and remove CPU_CONTROL_32BP_ENABLE
from asm.h as they were already defined in armreg.h.

Submitted by:	Michal Meloun <meloun at miracle.cz>
2014-09-10 13:38:52 +00:00
Andrew Turner
9ff96c2346 Move if_smc_fdt.c to live in sys/dev/smc. It's not specific to the ARM
Versatile hardware.
2014-09-10 10:59:17 +00:00
Ian Lepore
05e3ac86bf Rename new to newval in inline asm code, to avoid clashes with C++ new.
Also rename cmp to cmpval just to keep the asm variable names similar to
the C variable names.
2014-09-09 13:50:21 +00:00
Andrew Turner
89fd02846e When entering the kernel with the MMU off assume we are running from a
va == pa map.

I'm not sure the code would work if we are not running from the identity
map as the ARM core may attempt to read the next instruction from an
invalid memory location.
2014-09-07 21:46:54 +00:00
Andrew Turner
d5294df7d0 Remove Lvirtaddr and Lphysaddr, these don't appear to be used. 2014-09-07 19:33:38 +00:00
Andrew Turner
d26c7c862b Generalise the va to pa code and use it when starting secondary cores
Reviewed by:	ian@, rpaulo@
Differential Revision: https://reviews.freebsd.org/D736
2014-09-07 18:32:42 +00:00
Andrew Turner
e72deda6c8 Create a common i.MX53 config and use it with the two existing i.MX53
boards.

This is just intended to split the common config entries out, further
cleanup is expected.

Reviewed by:	ian@, rpaulo@ (earlier version)
Differential Revision: https://reviews.freebsd.org/D731
2014-09-07 08:16:27 +00:00
Ruslan Bukin
8aabb9719d o Remove __unused attribute on variables which actually used
o Unmagic 'configuration done' bit
o Move probe() to place before attach() for better navigation
o Use bus_read_n instead of bus_space_read_n functions

Pointed out by:	andrew
Sponsored by:	DARPA, AFRL
2014-09-06 18:08:21 +00:00
Andrew Turner
f622737b2e Fixthe spelling of ehci 2014-09-06 17:33:41 +00:00
Andrew Turner
ae46df0eab Allow us to use the virtual timer. It is currently disabled, but should
be usable as the default timer in place of the physical timer.

We are guaranteed to have access to the virtual timer, but when running
under a hypervisor may not have access to the physical.

Differential Revision: https://reviews.freebsd.org/D588
2014-09-06 13:21:07 +00:00
Ruslan Bukin
34a0189341 Add FPGA Manager driver. This driver allows to program FPGA core
from FreeBSD userspace running on ARM core.

Sponsored by:	DARPA, AFRL
2014-09-06 08:48:57 +00:00
Andrew Turner
5e5c172447 Add the virtual timer irq to the list of interrupts we enable on secondary
cores.
2014-09-05 19:00:30 +00:00
Warner Losh
3da47f7cad Wrap some long lines. 2014-09-04 16:40:54 +00:00
Ian Lepore
f8afe33355 Implement the imx_iomux_get/set_gpr() interface for imx6. 2014-09-04 15:11:57 +00:00
Ian Lepore
5a782ebbd8 The iomux driver is no longer optional, all imx platforms have it as
standard now, so remove it from kernel configs.
2014-09-04 14:59:27 +00:00
Ian Lepore
1b8950cfab Implement the same public interface in imx51 and imx6 iomux; use the common
header file for both.  Remove some unused code from imx51_iomux.  The iomux
drivers are required, not optional, adjust the files.* entries accordingly.
2014-09-04 14:57:04 +00:00
Ian Lepore
f5a76413fe Add a basic iomux driver for imx6.
Submitted by:	bsam@
2014-09-04 14:25:32 +00:00
Ian Lepore
4734ecbfec Fix typo in variable name. 2014-09-04 13:13:42 +00:00
Ruslan Bukin
9493c332a3 Add initial support for Altera SOCFPGA (heterogeneous ARM/FPGA) SoC family.
Include board configuration for Terasic SoCKit (Altera Cyclone V).

Sponsored by:	DARPA, AFRL
2014-09-04 12:44:40 +00:00
Ian Lepore
f214250a17 The imx5x and imx6 chips have an onboard IOMUX device which also contains a
few "general purpose registers" whose values control chip behavior in ways
that have nothing to do with IO pin mux control.  Define a simple API that
other soc-specific code can use to read and write the registers, and provide
the imx51 implementation of them.
2014-09-04 03:04:37 +00:00
Ian Lepore
f14514a385 Add a function to get the frequency of the AHB bus. Another stopgap
function until we have full clock support for imx6.
2014-09-03 21:45:39 +00:00
Ian Lepore
64e9597058 Remove DIAGNOSTIC from the kernel config of low-end arm systems. Sanity
checks such as vmem_check() can make a low-end system go completely
unresponsive for as much as 3 seconds out of every 10.
2014-09-03 19:37:41 +00:00
Ian Lepore
df63a5d236 Fixes and enhancements for the if_cgem driver...
- miibus fixes as suggested by Yonghyeon Pyun.
- enable VLAN MTU support.
- fix a few WITNESS complaints in cgem_attach().
- have cgem_attach() properly init the ifnet struct before calling
  mii_attach() to fix panic when using e1000phy.
- fix ethernet address changing.
- fix transmit queue overflow handling.
- tweak receive queue handling to reduce receive overflows.
- bring out MAC statistic counters to sysctls.
- add e1000phy to config file.
- implement receive hang work-around described in reference guide.
- change device name from if_cgem to cgem to be consistent with other
  interfaces.

Submitted by:	Thomas Skibo <ThomasSkibo@sbcglobal.net>
Reviewed by:	wkoszek, Yonghyeon PYUN <pyunyh@gmail.com>
2014-09-03 17:51:03 +00:00
Ian Lepore
60f47da972 The anatop driver controls power and PLLs and needs to be available before
just about anything else (other than octop which provides it config info),
so make it an EARLY_DRIVER_MODULE().
2014-09-02 02:56:43 +00:00
Ian Lepore
866180c3fc The ocotp driver provides access to registers containing chip configuration
data that is needed by other drivers, so make it an EARLY_DRIVER_MODULE()
that loads before just about anything else.
2014-09-02 02:54:55 +00:00
Ian Lepore
8c8f31e7b2 sdhci.h has grown a dependency on sysctl.h, include the latter where needed. 2014-09-01 19:20:34 +00:00
Ian Lepore
752ba93078 Rename OF_xref_phandle() to OF_node_from_xref() and add a new function
that provides the inverse translation, OF_xref_from_node().

Discussed with:	nwhitehorn
2014-09-01 18:51:01 +00:00
Ian Lepore
156688371b Do not generate unwind info in asm functions if _STANDALONE is defined.
The .fnend op causes the assembler to emit RELOC references to unwind
support functions that don't exist in libstand.
2014-09-01 14:57:04 +00:00
Warner Losh
877c97e5bd Resync comments about scbus and pass for life after AHCI joined CAM.
Sponsored by: Netflix
2014-09-01 03:49:21 +00:00
Ruslan Bukin
99d7e0a9a8 GIC (Cortex A's interrupt controller) supports up to 1020 IRQs. 2014-08-31 17:40:19 +00:00
Ian Lepore
93844d3203 Put option FDT into the base IMX6 config and remove it from the config
of boards based on IMX6.
2014-08-31 15:25:40 +00:00
Ian Lepore
46dd56e781 The Marvell PJ4B cpu family is armv7, not armv6. 2014-08-31 15:23:49 +00:00
Ian Lepore
4863c75af7 Fix the handling of MMU type in the AP entry code. The ARM_MMU_V6/V7
symbols are always #defined to 0 or 1, so use #if SYM not #if defined(SYM).
Also, it helps if you include the header file that defines the symbols.
2014-08-30 22:21:57 +00:00
Michael Tuexen
65d495a87e Enable SCTP support. It runs perfectly fine on a Wandboard quad.
MFC after: 3 days
2014-08-30 20:18:47 +00:00
Michael Tuexen
3cb6ceedb7 Remove FDT option, since it is in every file, which includes this one. 2014-08-30 20:00:18 +00:00
Luiz Otavio O Souza
801abb3eba Rewrite of ti_i2c based on gonzo's patch, fix the following bugs/problems:
. interrupt storm detected on "intr70:"; throttling interrupt source;

  . Added access serialization on iicbus_transfer(), previously there was
    no such protection and a new transfer could easily confuse the
    controller;

  . Add error checkings (i.e. stop the transfer when a error is detected
    and do _not_ overwrite the previous error);

  . On command done interrupt do not assume that the transfer was finished
    sucessfully as we will receive the command done interrupt even after
    errors;

  . Simplify the FIFO handling;

  . Reset the FIFO between the transfers as the FIFO may contain data from
    the last (failed) transfer;

  . Fix the iicbus speed for AM335x, which in turn will make better use of
    the I2C noise filter (set to one internal clock cycle);

  . Move the read and write handler to ithread instead of notifying the
    requesting thread with wakeup(9);

  . Fix the comments based on OMAP4 TRM.

The above changes allows me to read the EDID from my HDMI monitor on BBB
with gonzo's patches to support TDA19988 (which does 128 bytes reads) and
repeatedly scan the iicbus (with a modified i2c(8)) without lock up the bus.

Phabric:	D465
2014-08-20 17:02:37 +00:00
Warner Losh
ef9bab8ec8 Make note about reset vs RTOE actions... 2014-08-18 21:04:35 +00:00
Warner Losh
40ad132dfd /usr/libexec/ld.so.1 never was a thing on FreeBSD/arm. This was the
FreeBSD 3.x and 4.x run time linker. FreeBSD/arm's first release was
5.0. Retire this long-dead code.
2014-08-18 02:45:06 +00:00
Warner Losh
817dc00433 Expand the elf brandelf infrastructure to give access to the whole ELF
header (Elf_Ehdr) to determine if a particular interpretor wants to
accept it or not. Use this mechanism to filter EABI arm on OABI arm
kernels, and vice versa. This method could also be used to implement
OABI on EABI arm kernels, if desired, or to allow a single mips kernel
to run o32, n32 and n64 binaries.

Differential Revision: https://reviews.freebsd.org/D609
2014-08-18 02:44:56 +00:00
Bjoern A. Zeeb
e6b802649c Remove keyboard entropy [1] from r270105.
Reported by:		ian [1]
(Pointy hat)^2 to:	imp
2014-08-17 18:27:02 +00:00
Warner Losh
71db9bfe7d Add missing license to at91_common.c. It was committed w/o a license.
Pointy hat to: imp@
2014-08-17 16:53:19 +00:00
Warner Losh
7945ebfd6c Define at91_master_clock in only one file to eliminate warnings about
it multiply defined commons.
2014-08-17 16:53:14 +00:00
Warner Losh
8f5f93be3a Convert the HL201 config file to use FDT. 2014-08-17 16:53:10 +00:00
Ian Lepore
6a3fc532ab When the initarm_* routines were renamed to platform_* and moved to their
own header file, the lovely block of comments explaining what the generic
init code expects of the soc implementations got lost, restore it.
2014-08-17 02:56:58 +00:00
Ian Lepore
93f6c1b54f Rename the old initarm_* functions to the new platform_* names. Also
move the registration of the static device map table into the function
intended to do devmap init stuff.
2014-08-17 02:53:36 +00:00
Ian Lepore
1dfe3d275c Move the imx6 sysctl temperature info to hw.imx6 where all the other
soc-wide info lives.  It was under dev.imx6_anatop.0.

What does anatop mean anyway?  Nobody seems to know, so it's probably
not where somebody will think to look for imx6 hardware info.
2014-08-16 20:44:45 +00:00
Warner Losh
d90e30ba36 Implement the FDT static pinctl/pinmux spec for Atmel. This will
configure the mux and config registers for PIO devices based on what
we find in the FDT. I developed it per the spec that had been
committed to Linux in the January 2014 time frame and haven't
updated. In short, bundles of pins are activated in specific ways for
specific configurations, and we implement all of that.

What's not included is a MI device infrastructure, any dynamic
run-time changing of these pins, etc. Also not included are hooks into
all the drivers to enable the latter (static at boot no driver changes
are needed). These larger questions will need to be answered once we
have more drivers like this for more platforms, or somebody has a heck
of a lot of time to research a bunch of platforms, the Linux solution
(which is good, but has its warts), etc.
2014-08-15 16:08:52 +00:00
Warner Losh
6e8f9f5113 Print the symbolic bit names for the status when we get a timeout. 2014-08-14 23:17:33 +00:00
Warner Losh
9fedbe51c6 Add AIC to at91sam9260 support, now that it is needed for multipass to
work. This gets my AT91SAM9260-based boards almost booting with
current in multi pass. The MCI driver is broken, but it is equally
broken before multi-pass.
2014-08-14 04:21:31 +00:00
Warner Losh
9a6e86e109 Add support for multipass to Atmel, for both FDT and !FDT cases. 2014-08-14 04:21:25 +00:00
Warner Losh
66f2388712 Start to add FDT support. 2014-08-14 04:21:20 +00:00
Warner Losh
280cfc8438 Add support for FDT and !FDT configs on Atmel, though FDT isn't
working yet.
Bump rev on arm Makefile since files.at91 uses new '!' operator.
2014-08-14 04:21:14 +00:00
Warner Losh
161fedb9cc From https://sourceware.org/ml/newlib/2014/msg00113.html
By Richard Earnshaw at ARM
>
>GCC has for a number of years provides a set of pre-defined macros for
>use with determining the ISA and features of the target during
>pre-processing.  However, the design was always somewhat cumbersome in
>that each new architecture revision created a new define and then
>removed the previous one.  This meant that it was necessary to keep
>updating the support code simply to recognise a new architecture being
>added.
>
>The ACLE specification (ARM C Language Extentions)
>(http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.set.swdev/index.html)
>provides a much more suitable interface and GCC has supported this
>since gcc-4.8.
>
>This patch makes use of the ACLE pre-defines to map to the internal
>feature definitions.  To support older versions of GCC a compatibility
>header is provided that maps the traditional pre-defines onto the new
>ACLE ones.

Stop using __FreeBSD_ARCH_armv6__ and switch to __ARM_ARCH >= 6 in the
couple of places in tree. clang already implements ACLE. Add a define
that says we implement version 1.1, even though the implementation
isn't quite complete.
2014-08-14 04:20:13 +00:00
Jean-Sébastien Pédron
ca885fdfde Fix two files forgotten in r269783 (vt_generate_cons_palette)
Reported by:	bz
MFC after:	1 week
MFC with:	269783
2014-08-10 22:24:14 +00:00
Warner Losh
a17de72b25 Per discussion on arm@, the compiler generates misaligned
relocations. Cope with memcpy when needed.

Submitted by: fabient@ (plus changes suggested by thread)
2014-08-09 22:51:26 +00:00
Konstantin Belousov
39ffa8c138 Change pmap_enter(9) interface to take flags parameter and superpage
mapping size (currently unused).  The flags includes the fault access
bits, wired flag as PMAP_ENTER_WIRED, and a new flag
PMAP_ENTER_NOSLEEP to indicate that pmap should not sleep.

For powerpc aim both 32 and 64 bit, fix implementation to ensure that
the requested mapping is created when PMAP_ENTER_NOSLEEP is not
specified, in particular, wait for the available memory required to
proceed.

In collaboration with:	alc
Tested by:	nwhitehorn (ppc aim32 and booke)
Sponsored by:	The FreeBSD Foundation and EMC / Isilon Storage Division
MFC after:	2 weeks
2014-08-08 17:12:03 +00:00
Nathan Whitehorn
e2284b1f34 Remove unnecessary inclusion of FDT headers. 2014-08-08 06:30:17 +00:00
Nathan Whitehorn
2d4c9dd88f Use OF_getencprop() in preference to OF_getprop() and manual byte-swapping. 2014-08-08 06:29:30 +00:00
Ian Lepore
9ce4512ccd Add a missing clock register definition. 2014-08-08 01:23:43 +00:00
Ian Lepore
2ac725a4ec Use a SYSINIT to init the array of interrupt names on arm. This was
called from initarm() in arm/machdep.c, but many legacy arm platforms
have their own private initarm(), so a SYSINIT fixes everyone.

Reported by:	jmg
2014-08-06 21:27:15 +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
Ian Lepore
5fdc7f7e8f Cache the imx6 SoC type in a static var so that it only has to be figured
out by sniffing hardware registers once.
2014-08-05 19:10:53 +00:00
Ian Lepore
970775a5d2 Add an arm option, ARM_DEVICE_MULTIPASS, used to opt-in to multi-pass
device attachment on arm platforms.  If this is defined, nexus attaches
early in BUS_PASS_BUS, and other busses and devices attach later, in the
pass number they are set up for.  Without it defined, nexus attaches in
BUS_PASS_DEFAULT and thus so does everything else, which is status quo.

Arm platforms which use FDT data to enumerate devices have been relying
on devices being attached in the exact order they're listed in the dts
source file.  That's one of things currently preventing us from using
vendor-supplied fdt data (because then we don't control the order of the
devices in the data).  Multi-pass attachment can go a long way towards
solving that problem by ensuring things like clock and interrupt drivers
are attached before the more mundane devices that need them.

The long-term goal is to have all arm fdt-based platforms using multipass.
This option is a bridge to that, letting us enable it selectively as
platforms are converted and tested (the alternative being to just throw
a big switch and try to fight fires as they're reported).
2014-08-05 19:06:45 +00:00
Ian Lepore
333b6dcede Attach arm generic interrupt and timer drivers in the middle of
BUS_PASS_INTERRUPT and BUS_PASS_TIMER, respectively.
2014-08-05 18:51:51 +00:00
Ian Lepore
59866d11b5 Set the pl310 L2 cache driver to attach during the middle of BUS_PASS_CPU.
Because that's earlier than interrupts are available, set up deferred
configuration of interrupts (which are used only for debugging).
2014-08-05 17:39:58 +00:00
Gleb Smirnoff
c8d2ffd6a7 Merge all MD sf_buf allocators into one MI, residing in kern/subr_sfbuf.c
The MD allocators were very common, however there were some minor
differencies. These differencies were all consolidated in the MI allocator,
under ifdefs. The defines from machine/vmparam.h turn on features required
for a particular machine. For details look in the comment in sys/sf_buf.h.

As result no MD code left in sys/*/*/vm_machdep.c. Some arches still have
machine/sf_buf.h, which is usually quite small.

Tested by:	glebius (i386), tuexen (arm32), kevlo (arm32)
Reviewed by:	kib
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-08-05 09:44:10 +00:00
Alan Cox
a695d9b25b Retire pmap_change_wiring(). We have never used it to wire virtual pages.
We continue to use pmap_enter() for that.  For unwiring virtual pages, we
now use pmap_unwire(), which unwires a range of virtual addresses instead
of a single virtual page.

Sponsored by:	EMC / Isilon Storage Division
2014-08-03 20:40:51 +00:00
Ian Lepore
c311f7078c When arm 64-bit atomic ops are available, define ARM_HAVE_ATOMIC64. Use
that symbol (which will be correct in both kernel and userland contexts)
rather than just __arm__ to decide whether to use a local implementation.
2014-08-02 03:44:27 +00:00
Ian Lepore
eaa4e27642 Use atomic_load/store_64() in the arm implementation of counter(9), and
remove the XXX comments about non-atomic access to the counters.
2014-08-01 23:06:38 +00:00
Ian Lepore
9d203d4512 Add 64-bit atomic ops for armv4, only for kernel code, mostly so that we
don't need any #ifdef stuff to use atomic_load/store_64() elsewhere in
the kernel.  For armv4 the atomics are trivial to implement for kernel
code (just disable interrupts), less so for user mode, so this only has
the kernel mode implementations for now.
2014-08-01 22:56:41 +00:00
Ian Lepore
59561ab3e1 Add 64-bit atomic ops for armv6. The only safe way to access a 64-bit
value shared across multiple cores is with atomic_load_64() and
atomic_store_64(), because the normal 64-bit load/store instructions
are not atomic on 32-bit arm.  Luckily the ldrexd/strexd instructions
that are atomic are fairly cheap on armv6.  Because it's fairly simple
to do, this implements all the ops for 64-bit, not just load/store.

Reviewed by:	andrew, cognet
2014-08-01 22:28:36 +00:00
Ian Lepore
bda25c28ac Tell the assembler we're building for armv7a with security extensions,
so that the 'smc' (secure monitor call) opcode is valid.

Submitted by:	Stepan Dyatkovskiy <stpworld@narod.ru>
2014-08-01 20:32:29 +00:00
Ian Lepore
25166187e3 Fix unwind-info errors in our hand-written arm assembler code.
We have functions nested within functions, and places where we start a
function then never end it, we just jump to the middle of something else.
We tried to express this with nested ENTRY()/END() macros (which result
in .fnstart and .fnend directives), but it turns out there's no way to
express that nesting in ARM EHABI unwind info, and newer tools treat
multiple .fnstart directives without an intervening .fnend as an error.

These changes introduce two new macros, EENTRY() and EEND().  EENTRY()
creates a global label you can call/jump to just like ENTRY(), but it
doesn't emit a .fnstart.  EEND() is a no-op that just documents the
conceptual endpoint that matches up with the same-named EENTRY().

This is based on patches submitted by Stepan Dyatkovskiy, but I made some
changes and added the EEND() stuff, so blame any problems on me.

Submitted by:	Stepan Dyatkovskiy <stpworld@narod.ru>
2014-08-01 18:24:44 +00:00
Ruslan Bukin
d440ef2d73 Rename files: keep codename only to make it shorter. 2014-08-01 15:10:55 +00:00
Ruslan Bukin
835b36e211 Add support for Chromebook2 -- next-generation 8-core
(4 in operation), 4GB ram (3.5 usable) ARM machine.

Support covers device drivers for:
- Serial Peripheral Interface (SPI)
- Chrome Embedded Controller (EC) - SPI-based version
- XHCI and USB 3.0 dual-role device PHY

Also:
- Add support for Exynos5420 in Pad module
- Move power-related functions to separate driver --
  Power Management Unit (PMU)
- Enable XHCI for Chromebook1

Special thanks to grehan@ for hardware, and to
hselasky@ for r269139.
2014-08-01 06:20:25 +00:00
Ian Lepore
e58f02735f Switch to using counter(9) for the new 64-bit stats kept by armv6 busdma. 2014-07-31 03:59:00 +00:00
Ruslan Bukin
d6fb2fd561 Remove unused option. 2014-07-29 12:44:19 +00:00
Aleksandr Rybalko
d5a20b9777 Remove SC_DFLT_FONT option. vt(4) don't use it.
Suggested by:	emaste
Sponsored by:	The FreeBSD Foundation
2014-07-29 12:04:11 +00:00
Ian Lepore
15fc287383 Export some new busdma stats via sysctl for armv6. Added:
hw.busdma.tags_total: 46
 hw.busdma.maps_total: 1302
 hw.busdma.maps_dmamem: 851
 hw.busdma.maps_coherent: 849
 hw.busdma.maploads_total: 1568812
 hw.busdma.maploads_bounced: 16750
 hw.busdma.maploads_coherent: 920
 hw.busdma.maploads_dmamem: 920
 hw.busdma.maploads_mbuf: 1542766
 hw.busdma.maploads_physmem: 0
2014-07-29 02:38:02 +00:00
Ian Lepore
b92672d0cb A while back, the array of segments used for a load/mapping operation was
moved from the stack into the tag structure.  In retrospect that was a bad
idea, because nothing protects that array from concurrent access by
multiple threads.

This change moves the array to the map structure (actually it's allocated
following the structure, but all in a single malloc() call).

This also establishes a "sane" limit of 4096 segments per map.  This is
mostly to prevent trying to allocate all of memory if someone accidentally
uses a tag with nsegments set to BUS_SPACE_UNRESTRICTED.  If there's ever
a genuine need for more than 4096, don't hesitate to increase this (or
maybe make it tunable).

Reviewed by:	cognet
2014-07-29 02:37:48 +00:00
Ian Lepore
0e58c32732 We never need bounce pages for memory we allocate. We cleverly allocate
memory the matches all the constraints of the dma tag so that bouncing
will never be required.

Reviewed by:	cognet
2014-07-29 02:37:31 +00:00
Ian Lepore
409b23f7a7 Replace a bunch of double-indirection with a local pointer var (that is,
(*mapp)->something becomes map->something).  No functional changes.

Reviewed by:	cognet
2014-07-29 02:37:24 +00:00
Ian Lepore
2746b8c41f Don't clear the DMAMAP_DMAMEM_ALLOC flag set a few lines earlier. Doh!
Reviewed by:	cognet
2014-07-29 02:36:50 +00:00
Ian Lepore
1da97d052e Memory belonging to an mbuf, or allocated by bus_dmamem_alloc(), never
triggers a need to bounce due to cacheline alignment.  These buffers
are always aligned to cacheline boundaries, and even when the DMA operation
starts at an offset within the buffer or doesn't extend to the end of the
buffer, it's safe to flush the complete cachelines that were only partially
involved in the DMA.  This is because there's a very strict rule on these
types of buffers that there will not be concurrent access by the CPU and
one or more DMA transfers within the buffer.

Reviewed by:	cognet
2014-07-29 02:36:41 +00:00
Ian Lepore
688e9d85f4 The run_filter() function doesn't just run dma tag exclusion filter
functions, it has evolved to make a variety of decisions about whether
the DMA needs to bounce, so rename it to must_bounce().  Rewrite it to
perform checks outside of the ancestor loop if they're based on information
that's wholly contained within the original tag.  Now the loop only checks
exclusion zones in ancestor tags.

Also, add a new function, might_bounce() which does a fast inline check
of flags within the tag and map to quickly eliminate the need to call
the more expensive must_bounce() for each page in the DMA operation.

Within the mapping loops, use map->pagesneeded != 0 as a proxy for all
the various checks on whether bouncing might be required.  If no pages
were reserved for bouncing during the checks before the mapping loop,
then there's no need to re-check any of the conditions that can lead
to bouncing -- all those checks already decided there would be no bouncing.

Reviewed by:	cognet
2014-07-29 02:36:27 +00:00
Ian Lepore
befb477022 Propagate any alignment restriction from the parent tag to a new tag,
keeping the more restrictive of the two values.

Reviewed by:	cognet
2014-07-29 02:36:09 +00:00
Ian Lepore
3de4bbe357 Reformat some continuation lines. No functional changes.
Reviewed by:	cognet
2014-07-29 02:36:02 +00:00
Ian Lepore
7b1ee35189 Correct the comparison logic when looking for intersections between
exclusion zones and phsyical memory.  The phys_avail[i] entries are the
address of the first byte of ram in the region, and phys_avail[i+1]
entries are the address of the first byte of ram in the next region
(i.e., they're not included in the region that starts at phys_avail[i]).

Reviewed by:	cognet
2014-07-29 02:35:44 +00:00
Ian Lepore
7c54a52475 The exclusion_bounce() routine compares unchanging values in the tag with
unchanging values in the phys_avail array, so do the comparisons just once
at tag creation time and set a flag to remember the result.

Reviewed by:	cognet
2014-07-29 02:34:32 +00:00
Ian Lepore
751428ce88 Rename _bus_dma_can_bounce(), add new inline routines.
DMA on arm can bounce for several reasons, and _bus_dma_can_bounce() only
checks for the lowaddr/highaddr exclusion ranges in the dma tag, so now
it's named exclusion_bounce().  The other reasons for bouncing are checked
by the new functions alignment_bounce() and cacheline_bounce().

Reviewed by:	cognet
2014-07-29 02:31:29 +00:00
Ruslan Bukin
4d3ff0c3e6 Add the rest of combined interrupt groups. 2014-07-28 05:37:10 +00:00
Ian Lepore
510b2cb75c Pull in the armv4 "fast out" code for checking whether busdma can bounce
due to an excluded region of physical memory.
2014-07-26 18:19:43 +00:00
Ian Lepore
9ec89d355f Remove completely bogus alignment check -- it's the physical address that
needs to be aligned, not the virtual, and it doesn't seem worth the cost
of a vtophys() call just to see if kmem_alloc_contig() works properly.
2014-07-26 18:14:16 +00:00
Gavin Atkinson
f6b4f5ca21 Add error return to dumpsys(), and use it in doadump().
This commit does not add error returns to minidumpsys() or
textdump_dumpsys(); those can also be added later.

Submitted by:	Conrad Meyer (EMC / Isilon storage division)
2014-07-25 23:52:53 +00:00
Ruslan Bukin
40d7d6323b Enable Freescale i.MX I2C driver for i.MX6. 2014-07-22 04:39:32 +00:00
Ruslan Bukin
484b4fd46c Rename i.MX I2C driver file. 2014-07-22 03:59:14 +00:00
Ian Lepore
677a88cec2 Add dl_unwind_find_exidx() for ARM EABI, required for C++ exception
handling.  For statically linked apps this uses the __exidx_start/end
symbols set up by the linker.  For dynamically linked apps it finds the
shared object that contains the given address and returns the location and
size of the exidx section in that shared object.

The dl_unwind_find_exidx() name is used by other BSD projects and Android,
and is mentioned in clang 3.5 comments as "the BSD interface" for finding
exidx data.  GCC (in libgcc_s) expects the exact same API and functionality
to be provided by a function named __gnu_Unwind_Find_exidx(), so we provide
that with an alias ("strong reference").

Reviewed by:	kib@
MFC after:	1 week
2014-07-19 22:13:27 +00:00
Ruslan Bukin
f040f3b317 Add support for Toradex Apalis i.MX6 development board.
Sponsored by:	Toradex AG
2014-07-18 08:23:53 +00:00
Ruslan Bukin
0495dcef49 Rename gpio driver file. 2014-07-18 07:52:35 +00:00
Ruslan Bukin
e18aa9229a o Enable GPIO device driver for i.MX6.
It was originally written for i.MX5 and compatible with newer chip.
o Extend device tree information
o style(9) fixes

Discussed with:	ian
2014-07-18 07:47:50 +00:00
Alan Cox
526ed91414 Implement pmap_unwire(). See r268327 for the motivation behind this change. 2014-07-16 21:06:43 +00:00
Alan Cox
87dd8ef960 Actually set the "no execute" bit on 1 MB page mappings in pmap_protect().
Previously, the "no execute" bit was being set directly in the PTE, instead
of the local variable in which the new PTE value is being constructed.  So,
when the local variable was finally assigned to the PTE, the "no execute"
bit setting was lost.
2014-07-15 17:16:06 +00:00
Alan Cox
c3c820296f Eliminate repeated calculation of next_bucket in pmap_protect() and
pmap_remove().  Eliminate an unnecessary variable from pmap_remove() and
pmap_advise().
2014-07-15 05:34:27 +00:00
Ian Lepore
0f822edead Fix the Zedboard/Zynq ethernet driver to handle media speed changes so
that it can connect to switches at speeds other than 1gb.

This requires changing the reference clock speed.  Since we still don't
have a general clock API that lets a SoC-independant driver manipulate its
own clocks, this change includes a weak reference to a routine named
cgem_set_ref_clk().  The default implementation is a no-op; SoC-specific
code can provide an implementation that actually changes the speed.

Submitted by:	Thomas Skibo <ThomasSkibo@sbcglobal.net>
2014-07-14 20:58:57 +00:00
Alan Cox
db3ddfd672 Eliminate dead code. There is no direct map. This code was cut-and-pasted
from amd64.
2014-07-14 17:16:09 +00:00
Ian Lepore
8d99c2a062 Pending interrupt status is cleared by writing to the ISR, not the data reg.
MFC after:	1 week
2014-07-10 14:06:18 +00:00
Ian Lepore
1e3d53c687 Use named constant rather than '0' to access the reset controller register. 2014-07-08 14:35:09 +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
Andrew Turner
8b04766b28 Remove the incomplete Tegra 2 code, nobody was maintaining it. The AC100
never booted to single user mode.

It can be brought back if someone is willing to get it into a stable state
and maintain it.
2014-06-22 15:15:52 +00:00
Michael Tuexen
2ff25a8b1c Different versions of the ARM processor use different registers.
Fix the code used on a Raspberry Pi.

Reviewed by: markm@
2014-06-17 21:48:04 +00:00
John Baldwin
a2677ff239 Don't bother clearing maps for static DMA allocations to NULL. Instead,
leave them as purely opaque values that are only set by bus_dmamem_alloc().
2014-06-17 18:10:06 +00:00
Attilio Rao
3ae10f7477 - Modify vm_page_unwire() and vm_page_enqueue() to directly accept
the queue where to enqueue pages that are going to be unwired.
- Add stronger checks to the enqueue/dequeue for the pagequeues when
  adding and removing pages to them.

Of course, for unmanaged pages the queue parameter of vm_page_unwire() will
be ignored, just as the active parameter today.
This makes adding new pagequeues quicker.

This change effectively modifies the KPI.  __FreeBSD_version will be,
however, bumped just when the full cache of free pages will be
evicted.

Sponsored by:	EMC / Isilon storage division
Reviewed by:	alc
Tested by:	pho
2014-06-16 18:15:27 +00:00
Ruslan Bukin
b9402e3d56 Add very basic driver for 12-bit Analog to Digital Converter (ADC). 2014-06-15 12:08:33 +00:00
John-Mark Gurney
4f4bd09dd1 clear the write bit... This allows my AVILA board to survive a
portsnap extract, where previously it would panic..  clearly someone
who knows pmap should optimize this code per alc's comment...

Submitted by:	alc
MFC after:	probably
2014-06-12 16:31:15 +00:00
Ruslan Bukin
d17024dfd7 Enable SMP for both Exynos5 models we support. 2014-06-12 11:44:26 +00:00
Ruslan Bukin
f0687d366a Activate IRQ 30 (non-secure private timer IRQ) for case we are running
in non-secure state.
2014-06-12 11:41:04 +00:00
Ruslan Bukin
f098889377 Add machine-dependent SMP part for Exynos5420 2014-06-12 11:37:38 +00:00
John Baldwin
068d8643ad Fix various NIC drivers to properly cleanup static DMA resources.
In particular, don't check the value of the bus_dma map against NULL
to determine if either bus_dmamem_alloc() or bus_dmamap_load() succeeded.
Instead, assume that bus_dmamap_load() succeeeded (and thus that
bus_dmamap_unload() should be called) if the bus address for a resource
is non-zero, and assume that bus_dmamem_alloc() succeeded (and thus
that bus_dmamem_free() should be called) if the virtual address for a
resource is not NULL.

In many cases these bugs could result in leaks when a driver was detached.

Reviewed by:	yongari
MFC after:	2 weeks
2014-06-11 14:53:58 +00:00
Ruslan Bukin
2aaaabd4c1 Add a driver for Serial Peripheral Interface (SPI). 2014-06-11 10:03:06 +00:00
John Baldwin
f07894dbde Don't destroy bus_dma maps created by bus_dmamem_alloc(). In some cases,
don't create a map before calling bus_dmamem_alloc() (such maps were
leaked).  It is believed that the extra destroy of the map was generally
harmless since bus_dmamem_alloc() often uses special maps for which
bus_dmamap_destroy() is a no-op (e.g. on x86).

Reviewed by:	scottl
2014-06-10 20:25:45 +00:00
Alan Cox
dd05fa1945 Add a page size field to struct vm_page. Increase the page size field when
a partially populated reservation becomes fully populated, and decrease this
field when a fully populated reservation becomes partially populated.

Use this field to simplify the implementation of pmap_enter_object() on
amd64, arm, and i386.

On all architectures where we support superpages, the cost of creating a
superpage mapping is roughly the same as creating a base page mapping.  For
example, both kinds of mappings entail the creation of a single PTE and PV
entry.  With this in mind, use the page size field to make the
implementation of vm_map_pmap_enter(..., MAP_PREFAULT_PARTIAL) a little
smarter.  Previously, if MAP_PREFAULT_PARTIAL was specified to
vm_map_pmap_enter(), that function would only map base pages.  Now, it will
create up to 96 base page or superpage mappings.

Reviewed by:	kib
Sponsored by:	EMC / Isilon Storage Division
2014-06-07 17:12:26 +00:00
Kevin Lo
6ed1354934 Remove extra semicolons. 2014-06-06 16:37:42 +00:00
Warner Losh
3f1afabf09 Restore comments accidentally removed.
MFC after: 3 days
2014-06-06 04:08:55 +00:00
Zbigniew Bodek
47fdf913c1 Avoid using hard-coded SoC's register address in mptramp code for Armada XP
SoC's registers base address may differ between boards
(0xf1000000 or 0xd0000000). Therefore, in order to use
the proper CPU Boot Address Redirect register during SMP
initialization in mptramp the real, physical address has
to be passed to mptramp based on the value from DT.

Reviewed by: gber
2014-06-05 21:37:04 +00:00
Zbigniew Bodek
d0307444ed Fix broken SMP startup on Armada XP after r265694
During Armada's platform_mp_start_ap(), mptramp code
is being copied to the specific physical location (0xffff0000).
Before r265694 the address to which the code should be copied
was equal to the address of mpentry routine that followed the
mptramp in locore.S. Now the mptramp end address should be
exported and used as a copy limit.

Reviewed by: gber
2014-06-05 21:35:10 +00:00