Commit Graph

2178 Commits

Author SHA1 Message Date
Adrian Chadd
f553cf3bb9 Revert r252694 - which attempted to fix bit emulation for armv6/armv7.
This seems to cause issues with jemalloc + {dhclient, sshd}.

Thus, revert this for now until the root cause can be found and
fixed.

This should quieten some runtime problems with the Raspberry Pi.

PR: kern/185046
MFC after: 3 days
2013-12-27 05:01:13 +00:00
Ian Lepore
fb962e6dcf Add PPS support to the am335x timer driver. This uses the timer hardware's
capture mode together with the timecounter's PPS polling feature to get
very accurate PPS capture without any interrupt processing (or latency).

Hardware timers 4 through 7 have associated capture-trigger input pins.
When the PPS support is compiled in the code automatically chooses the
first timer it finds that has the capture-trigger pin set to input mode
(this is configured via the fdt data).
2013-12-22 23:03:29 +00:00
Ian Lepore
97247a2acf A variety of cleanups...
- Use named constants for register bits, instead of mystery numebrs
   scattered around in the code.
 - Use inline functions for bus space read/write, instead of macros
   that rely on global variables.
 - Move the timecounter struct into the softc instead of treating it
   as a global variable.  Backlink from it to the softc.
 - This leaves a pointer to the softc as the only static/global variable
   and it's now used only by DELAY().
2013-12-22 21:44:32 +00:00
Ian Lepore
b125ed0241 Map out all the timer-related registers, and define named constants for
the bits within the registers.
2013-12-22 21:35:18 +00:00
Ian Lepore
299e547f97 Shorten the DMTIMER_ prefix used for register names to DMT_. This is in
preparation for adding more complete register defintions, some of which
have fairly long names.
2013-12-22 20:40:56 +00:00
Aleksandr Rybalko
e58e20aeda Add Freescale i.MX515 vt(9) driver.
Sponsored by:	The FreeBSD Foundation
2013-12-22 16:09:29 +00:00
Warner Losh
f83ed22cb6 Plumb the cn_grab and cn_ungrab routines down into the uart
clients. Mask RX interrupts while grabbed on the atmel serial
driver. This UART interrupts every character. When interrupts are
enabled at the mountroot> prompt, this means the ISR eats the
characters. Rather than try to create a cooperative buffering system
for the low level kernel console, instead just mask out the ISR. For
NS8250 and decsendents this isn't needed, since interrupts only happen
after 14 or more characters (depending on the fifo settings). Plumb
such that these are optional so there's no change in behavior for all
the other UART clients. ddb worked on this platform because all
interrupts were disabled while it was running, so this problem wasn't
noticed. The mountroot> issue has been around for a very very long
time.

MFC after:	3 days
2013-12-21 16:23:31 +00:00
Ganbold Tsagaankhuu
543c9e95f2 Add identification and necessary type checks for Krait CPU cores. Krait CPU is used in
Qualcomm Snapdragon S4 and Snapdragon 400/600/800 SoCs and has architectural
similarities to ARM Cortex-A15. As for development boards IFC6400 series embedded
boards from Inforce Computing uses Snapdragon S4 Pro/APQ8064.

Approved by: stas (mentor)
2013-12-20 00:56:23 +00:00
Aleksandr Rybalko
86b04d42ec Fix copyright and some style(9) things.
Sponsored by:	The FreeBSD Foundation
2013-12-17 15:34:38 +00:00
Aleksandr Rybalko
0f705e869b Add vt support for RPi. (No early stage yet.)
Sponsored by:	The FreeBSD Foundation
2013-12-17 15:23:47 +00:00
Nathan Whitehorn
95e3bfe889 Simplify the ofw_bus_lookup_imap() API slightly: make it allocate maskbuf
internally instead of requiring the caller to allocate it.
2013-12-17 15:11:24 +00:00
Nathan Whitehorn
c826a64307 Use the common Open Firmware PCI interrupt routing code instead of the
duplicate version in dev/fdt.

Tested by:	zbb
2013-12-16 22:04:47 +00:00
Luiz Otavio O Souza
9fa569a713 After r256961 ofw_iicbuc.c will be built for any kernel which includes
options 'iicbus' and 'fdt'.  Remove the (now) unnecessary entries.

Verified on BBB (am335x), EFIKA_MX (imx51 - by ray@), DIGI-CCWMX53
(imx53 - kernel build).

Approved by:	adrian (mentor)
2013-12-12 18:29:36 +00:00
Warner Losh
9336463d86 Loose -> Lose so this sentence makes sense.
MFC after:	3 days
2013-12-11 15:32:28 +00:00
Warner Losh
19dab280cc Fix one race and one fence post error. When the TX buffer was
completely full, we'd not complete any of the mbufs due to the fence
post error (this creates a large leak). When this is fixed, we still
leak, but at a much smaller rate due to a race between ateintr and
atestart_locked as well as an asymmetry where atestart_locked is
called from elsewhere.  Ensure that we free in-flight packets that
have completed there as well. Also remove needless check for NULL on
mb, checked earlier in the loop and simplify a redundant if.

MFC after:	3 days
2013-12-11 05:32:29 +00:00
John Baldwin
0b20d9bf78 Correct license statements to reflect the fact that these files were all
derived from sys/arm/mv/bus_space.c.

Approved by:	core
2013-12-10 22:13:36 +00:00
Luiz Otavio O Souza
7f6897133f Bring the RPi I2C driver in line with ti_i2c. Make it treat any slave
address as a 7-bit address.

Approved by:	adrian (mentor)
2013-12-09 12:01:17 +00:00
Luiz Otavio O Souza
05a92e03c3 Activate the device before attempt to access any of its registers. Without
this change we may end up with a panic (Fatal kernel mode data abort:
'External Non-Linefetch Abort (S)') as described in
http://e2e.ti.com/support/arm/sitara_arm/f/791/t/276862.aspx.

It is now possible to bring up I2C1 and I2C2 on BBB.

Approved by:	adrian (mentor)
2013-12-09 11:51:17 +00:00
Luiz Otavio O Souza
8537123a62 Fix a few typos on the scm (control module) pin mux definitions.
Approved by:	adrian (mentor)
2013-12-09 11:33:45 +00:00
Ganbold Tsagaankhuu
bfb24e2a06 Add gpio parse routines according to sys/boot/fdt/dts/bindings-gpio.txt.
Reviewed by: stas@
2013-12-09 07:14:59 +00:00
Luiz Otavio O Souza
87bd9889d1 Similar to r255816, fix the math for the DELAY() calculation. It was off
by a really small amount because of the higher timer resolution.

Approved by:	adrian (mentor)
Verified on:	BBB
2013-12-08 13:46:27 +00:00
Warner Losh
0b40a04719 Although not strictly required to boot a 64MB board, bump
vm_max_virtual_address to be KERNVIRTADDR + 256MB. This allows some
future shock protection since the KVA requirements have gone up since
the unmapped changes have gone in, as well as preventing us from
overlapping with the hardware devices, which we map at 0xd0000000,
which we'd hit with anything more than 85MB...

MFC after:	3 days
2013-12-06 18:41:16 +00:00
Luiz Otavio O Souza
9f16518401 Fix the pin value reading on AM335x. Because of the inverted logic it was
always returning '0' for all the reads, even for the outputs.  It is now
known to work with gpioiic(4) and gpioled(4).

Approved by:	adrian (mentor)
Tested on:	BBB
2013-12-06 18:09:10 +00:00
Luiz Otavio O Souza
1fbabb4886 Make the sysctl node read-only.
Approved by:	adrian (mentor)
2013-12-06 17:45:14 +00:00
Zbigniew Bodek
a92a06d31a Enable missing Access Flag for secondary cores on ARMv6/v7
Spotted by:	Wojciech Macek <wma@semihalf.com>
Obtained from:	Semihalf
2013-12-02 13:09:59 +00:00
Ian Lepore
f32d80bf1f Add a nand flash controller driver for Atmel at91 family. Tested only
on at91rm9200 so far.

The files.at91 has listed a nand driver for ages, but it never existed.
2013-12-02 03:52:40 +00:00
Ian Lepore
ca38150ce3 Add definitions for the additional PIO pins found on recent AT91 SoCs. 2013-12-02 02:33:03 +00:00
Eitan Adler
4be4358fd1 r258780 should not have applied to .S files.
Reported by:	jmallett
2013-12-01 02:58:48 +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
4808bd047e Set the PGA_WRITEABLE flag when the protections indicate write access, not
just when the current access is a write.

Reviewed by:	zbb@
2013-11-29 15:06:11 +00:00
Ganbold Tsagaankhuu
18d753d0fb Enable reset mechanism for rk3188.
Approved by: ray@
2013-11-25 11:02:58 +00:00
Ganbold Tsagaankhuu
421663eb64 Add watchdog driver for rk3188.
Approved by: ray@
2013-11-25 11:01:19 +00:00
Gavin Atkinson
e0c634180c Fix typo in comment. 2013-11-24 22:53:49 +00:00
Gavin Atkinson
702701714b platform_devmap_init() was renamed initarm_devmap_init() in r257669, update
comments to match.
2013-11-24 22:01:15 +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
Olivier Houchard
e5926a9f69 In pmap_unmapdev(), remember the size, and use that as an argument to
kva_free(), or we'd end up always passing it a size of 0, and for some
strange reason it doesn't seem to like it.
2013-11-20 23:06:54 +00:00
Ian Lepore
27ce8f8368 Add USB_HOST_ALIGN=64; the cache line size on the am335x is 64 bytes. 2013-11-20 16:42:01 +00:00
Ian Lepore
db87bba4c7 Call cpu_setup() immediately after the page tables are installed. This
enables data cache and other chip-specific features.  It was previously
done via an early SYSINIT, but it was being done after pmap and vm setup,
and those setups need to use mutexes.  On some modern ARM platforms,
the ldrex/strex instructions that implement mutexes require the data cache
to be enabled.

A nice side effect of enabling caching earlier is that it eliminates the
multi-second pause that used to happen early in boot while physical memory
and pmap and vm were being set up.  On boards with 1 GB or more of ram
this pause was very noticible, sometimes 5-6 seconds.

PR:		arm/183740
2013-11-20 15:53:50 +00:00
Zbigniew Bodek
a39370ff87 Apply access flags for managed and unmanaged pages properly on ARMv6/v7
When entering a mapping via pmap_enter() unmanaged pages ought to be
naturally excluded from the "modified" and "referenced" emulation.
RW permission should be granted implicitly when requested,
otherwise unmanaged page will not recover from the permission fault
since there will be no PV entry to indicate that the page can be written.

In addition, only managed pages that participate in "modified"
emulation need to be marked as "dirty" and "writeable" when entered
with RW permissions. Likewise with "referenced" flag for managed pages.
Unmanaged ones however should not be marked as such.

Reviewed by:	cognet, gber
2013-11-19 23:37:50 +00:00
Zbigniew Bodek
5677154505 Avoid clearing EXEC permission bit when setting the page RW on ARMv6/v7
When emulating modified bit the executable attribute was cleared by
mistake when calling pmap_set_prot(). This was not a problem before
changes to ref/mod emulation since all the pages were created RW basing
on the "prot" argument in pmap_enter(). Now however not all pages are RW
and the RW permission can be cleared in the process.

Added proper KTRs accordingly.

Spotted by:	cognet
Reviewed by:	gber
2013-11-19 23:31:39 +00:00
Ian Lepore
19bc299f1c Bugfixes... the host capabilties from FDT data are stored in host.caps, not
host.host_ocr, examine the correct field when setting up the hardware.  Also,
the offset for the capabilties register should be 0x140, not 0x240.

Submitted by:	Ilya Bakulin <ilya@bakulin.de>
Pointy hat to:	me
2013-11-19 22:14:35 +00:00
Alan Cox
eb11fc3cf3 Implement pmap_align_superpage().
MFC after:	6 weeks
2013-11-17 23:28:10 +00:00
Ian Lepore
055a74d854 In the data abort handler, don't panic if kdb is available and says it
handled the condition.

PR:		arm/183668
Submitted by:	Howard Su <howard0su@gmail.com>
2013-11-16 23:37:56 +00:00
Rui Paulo
3477d65d6a Enable the ti_mbox and ti_pruss drivers. 2013-11-16 08:28:14 +00:00
Rui Paulo
8cfbb9cf03 Add a driver for the TI Programmable Realtime Unit Subsystem.
This is only a userland accessibility driver.  It mmaps the hardware region to
userland and posts interrupt notifications via kqueue.
2013-11-16 08:23:15 +00:00
Rui Paulo
5b8db1da54 Add a driver for the Texas Instruments Mailbox hardware. 2013-11-16 08:20:50 +00:00
John Baldwin
5e9257436c Remove an incorrectly copied and pasted clause from these license
statements.

Approved by:	Yohanes Nugroho <yohanes@gmail.com>
MFC after:	1 week
2013-11-15 16:16:55 +00:00
Ruslan Bukin
009e1b7790 o Use common ARMv6/v7 bus_space tag.
o Use new helper routines for arm static device mapping.
o style(9) tweaks.
2013-11-13 16:17:05 +00:00
Ruslan Bukin
5c263f43ef Add support for Freescale Vybrid Family VF600 heterogeneous
ARM Cortex-A5/M4 SoC (M4 core is not used in this work).

Support includes device drivers for:
- NAND Flash Controller (NFC)
- USB Enhanced Host Controller Interface (EHCI)
- General-Purpose Input/Output (GPIO)
- Universal Asynchronous Receiver/Transmitter (UART)

Also supported:
- Generic Interrupt Controller (GIC)
- MPCore timer
- ffec ethernet driver

Reviewed by:	ray
Approved by:	cognet (mentor)
2013-11-12 18:02:56 +00:00
Luiz Otavio O Souza
21cb1342c0 As all the IIC controllers on system uses the same 'iichb' prefix we cannot
rely only on checking the device unit to indentify the BSC unit we are
attaching to.  Make use of the device base address to identify our BSC unit.

Approved by:	adrian (mentor)
2013-11-12 13:34:07 +00:00