David Daney [Wed, 10 Feb 2010 23:12:47 +0000 (15:12 -0800)]
MIPS: Implement Read Inhibit/eXecute Inhibit
The SmartMIPS ASE specifies how Read Inhibit (RI) and eXecute Inhibit
(XI) bits in the page tables work. The upper two bits of EntryLo{0,1}
are RI and XI when the feature is enabled in the PageGrain register.
SmartMIPS only covers 32-bit systems. Cavium Octeon+ extends this to
64-bit systems by continuing to place the RI and XI bits in the top of
EntryLo even when EntryLo is 64-bits wide.
Because we need to carry the RI and XI bits in the PTE, the layout of
the PTE is changed. There is a two instruction overhead in the TLB
refill hot path to get the EntryLo bits into the proper position.
Also the TLB load exception has to probe the TLB to check if RI or XI
caused the exception.
Also of note is that the layout of the PTE bits is done at compile and
runtime rather than statically. In the 32-bit case this allows for
the same number of PFN bits as before the patch as the _PAGE_HUGE is
not supported in 32-bit kernels (we have _PAGE_NO_EXEC and
_PAGE_NO_READ instead of _PAGE_READ and _PAGE_HUGE).
The patch is tested on Cavium Octeon+, but should also work on 32-bit
systems with the Smart-MIPS ASE.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/952/
Patchwork: http://patchwork.linux-mips.org/patch/956/
Patchwork: http://patchwork.linux-mips.org/patch/962/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Wed, 10 Feb 2010 23:12:44 +0000 (15:12 -0800)]
MIPS: Use 64-bit stores to c0_entrylo on 64-bit kernels.
64-bit CPUs have 64-bit c0_entrylo{0,1} registers. We should use the
64-bit dmtc0 instruction to set them. This becomes important if we
want to set the RI and XI bits present in some processors.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/954/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Frans Pop [Sat, 6 Feb 2010 17:47:13 +0000 (18:47 +0100)]
MIPS: Remove trailing space in messages
Signed-off-by: Frans Pop <elendil@planet.nl>
To: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/946/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Sun, 31 Jan 2010 12:39:40 +0000 (20:39 +0800)]
MIPS: Make the debugging of compressed kernel configurable
This patch adds a new DEBUG_ZBOOT option to allow the users to enable it
to debug the compressed kernel support for a new board and this optoin
should be disabled to reduce the kernel image size and speed up the
kernel booting procedure when the compressed kernel support is stable.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
To: Ralf Baechle <ralf@linux-mips.org> Cc: Manuel Lauss <manuel.lauss@googlemail.com> Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/918/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 29 Jan 2010 00:52:12 +0000 (16:52 -0800)]
MIPS: Allow the auxv's elf_platform entry to be set.
The userspace runtime linker uses the elf_platform to find the libraries
optimized for the current CPU archecture variant. First we need to allow it
to be set to something other than NULL. Follow-on patches will set some
values for specific CPUs.
GLIBC already does the right thing. The kernel just needs to supply good
data.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/891/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Wed, 14 Oct 2009 07:38:06 +0000 (09:38 +0200)]
MMC: AU1xMMC: Allow platforms to disable host capabilities
Although the hardware supports a 4/8bit SD interface and the driver
unconditionally advertises all hardware caps to the MMC core, not all
datalines may actually be wired up. This patch introduces another
field to au1xmmc platform data allowing platforms to disable certain
advanced host controller features.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: linux-mmc@vger.kernel.org CC: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/460/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Thu, 28 Jan 2010 14:22:37 +0000 (15:22 +0100)]
MIPS: Deal with larger physical offsets
AR7 has a larger physical offset than other MIPS based systems and therefore
needs to setup its handlers beyond the usual KSEG0 range. When running the
kernel in mapped mode this modification is also required. Remove function
comment which is now incorrect.
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Eugene Konev <ejka@imfi.kspu.ru> Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/889/
Patchwork: http://patchwork.linux-mips.org/patch/932/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Wed, 27 Jan 2010 14:39:46 +0000 (22:39 +0800)]
MIPS: Loongson: Cleanup the halt and poweroff action
In the old source code, I have let halt and poweroff do the same action,
but in reality, they have different meanings.
As the manpage of shutdown shows:
-r Reboot after shutdown.
-H Halt action is to halt or drop into boot monitor on systems that support it.
-P Halt action is to turn off the power.
and in the real world, some machines(e.g. NAS) did not provide a power
button and the shutdown works as reset, so, we need to provide a
mechanism to let the users turn off the power safely without breaking
the system, such a mechanism is "halt", which only put the system into a
dead loop or a power-save mode and print some information to the screen
to tell the users to turn off the power safely.
$ shutdown -hH now /* loongson_halt, not turn off the power */
$ shutdown -hP now /* loongson_poweroff, work as poweroff */
Roel Kluin [Tue, 19 Jan 2010 23:59:27 +0000 (00:59 +0100)]
MIPS: Cleanup switches with cases that can be merged
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
To: linux-mips@linux-mips.org
To: Andrew Morton <akpm@linux-foundation.org>
To: LKML <linux-kernel@vger.kernel.org>
Patchwork: http://patchwork.linux-mips.org/patch/860/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 22 Jan 2010 22:41:14 +0000 (14:41 -0800)]
MIPS: Remove probe_tlb().
The function probe_tlb() only does anything for processors that are
not PRID_COMP_LEGACY. This is precisely the set of processors for
which decode_configs() is called to do identical tlbsize probing
calculations. Therefore probe_tlb() is completely redundant and may
be removed.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/865/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Wed, 16 Dec 2009 10:29:06 +0000 (11:29 +0100)]
MIPS: add readl/write_be accessors
MIPS currently lacks the readl_be and writel_be accessors
which are required by BCM63xx for OHCI and EHCI support.
Let's define them globally for MIPS. This also fixes the
compilation of the bcm63xx defconfig against USB.
Wu Zhangjin [Mon, 4 Jan 2010 09:16:52 +0000 (17:16 +0800)]
MIPS: Loongson: Lemote-2F: update defconfig
Changes:
o Serial port related configuration
Disable EARLY_PRINTK, CONFIG_SYS_SUPPORTS_ZBOOT_UART16550
Enable the serial port support as module.
o PM related support
Enable CPUFreq as module, use the external timer(MFGPT) instead of
r4k timer.
Enable Suspend support
Enable Run Time PM support
o Enable SM7XX Video Driver
Disable the buggy 2d acceleration
o Enable CONFIG_OPROFILE as module
o Use GZIP instead of LZMA, which need less decompression time
o Enable more USB devices support
o Enable initrd support(needed by gNewsense)
o Enable more crypto support
Wu Zhangjin [Mon, 4 Jan 2010 09:16:48 +0000 (17:16 +0800)]
MIPS: Loongson: Cleanup of the environment variables
Changes:
o Move bus_clock into prom_init_env()
o Initialize the cpu_clock_freq to the default values for the
correspoding processor revisions if no such environment variable
passed by BIOS/Bootloader.
Wu Zhangjin [Mon, 4 Jan 2010 09:16:46 +0000 (17:16 +0800)]
MIPS: Loongson: Remove the serial port output of compressed kernel support
The compressed kernel support on loongson family machines is stable now,
so, remove the debug information via using SYS_SUPPORTS_ZBOOT instead of
SYS_SUPPORTS_ZBOOT_UART16550. This may reduce the image size and speedup
the booting.
Wu Zhangjin [Mon, 4 Jan 2010 09:16:43 +0000 (17:16 +0800)]
MIPS: Loongson: Lemote-2F: Get the machine type from PMON_VER
Lemote have used the PMON_VER strings to indicate the loongson-2f
machine series:
PMON_VER=LM8089 Lemote 8.9'' netbook
LM8101 Lemote 10.1'' netbook
(The above two netbooks have the same kernel support)
LM6XXX Lemote FuLoong(2F) box series
LM9XXX Lemote LynLoong PC series
Before the machtype is supported by the PMON, we can get the machine
type from the PMON_VER for these machines, this will help the users a
lot.
David Daney [Thu, 7 Jan 2010 19:05:06 +0000 (11:05 -0800)]
Staging: Octeon Ethernet: Use constants from in.h
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/837/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:05:05 +0000 (11:05 -0800)]
Staging: Octeon Ethernet: Enable scatter-gather.
Octeon ethernet hardware can handle NETIF_F_SG, so we enable it.
A gather list of up to six fragments will fit in the SKB's CB
structure, so no extra memory is required. If a SKB has more than six
fragments, we must linearize it.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/838/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:05:04 +0000 (11:05 -0800)]
Staging: Octeon Ethernet: Convert to NAPI.
Convert the driver to be a reasonably well behaved NAPI citizen.
There is one NAPI instance per CPU shared between all input ports. As
receive backlog increases, NAPI is scheduled on additional CPUs.
Receive buffer refill code factored out so it can also be called from
the periodic timer. This is needed to recover from temporary buffer
starvation conditions.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/839/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:05:03 +0000 (11:05 -0800)]
Staging: Octeon Ethernet: Rewrite transmit code.
Stop the queue if too many packets are queued. Restart it from a high
resolution timer.
Rearrange and simplify locking and SKB freeing code
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/843/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:05:01 +0000 (11:05 -0800)]
Staging: Octeon Ethernet: Remove unused code.
Remove unused code, reindent, and join some spilt strings.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/842/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:05:00 +0000 (11:05 -0800)]
MIPS: Octeon: Fix EOI handling.
If an interrupt handler disables interrupts, the EOI function will
just reenable them. This will put us in an endless loop when the
upcoming Ethernet driver patches are applied.
Only reenable the interrupt on EOI if it is not IRQ_DISABLED. This
requires that the EOI function be separate from the ENABLE function.
We also rename the ACK functions to correspond with their function.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: gregkh@suse.de
Patchwork: http://patchwork.linux-mips.org/patch/840/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Sat, 9 Jan 2010 01:17:44 +0000 (17:17 -0800)]
MIPS: Octeon: Use optimized memory barrier primitives.
In order to achieve correct synchronization semantics, the Octeon port
had defined CONFIG_WEAK_REORDERING_BEYOND_LLSC. This resulted in code
that looks like:
sync
ll ...
.
.
.
sc ...
.
.
sync
The second SYNC was redundant, but harmless.
Octeon has a SYNCW instruction that acts as a write-memory-barrier
(due to an erratum in some parts two SYNCW are used). It is much
faster than SYNC because it imposes ordering on the writes, but
doesn't otherwise stall the execution pipeline. On Octeon, SYNC
stalls execution until all preceeding writes are committed to the
coherent memory system.
Using:
syncw;syncw
ll
.
.
.
sc
.
.
Has identical semantics to the first sequence, but is much faster.
The SYNCW orders the writes, and the SC will not complete successfully
until the write is committed to the coherent memory system. So at the
end all preceeding writes have been committed. Since Octeon does not
do speculative reads, this functions as a full barrier.
The patch removes CONFIG_WEAK_REORDERING_BEYOND_LLSC, and substitutes
SYNCW for SYNC in write-memory-barriers.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/850/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Sat, 9 Jan 2010 01:17:43 +0000 (17:17 -0800)]
MIPS: New macro smp_mb__before_llsc.
Replace some instances of smp_llsc_mb() with a new macro
smp_mb__before_llsc(). It is used before ll/sc sequences that are
documented as needing write barrier semantics.
The default implementation of smp_mb__before_llsc() is just smp_llsc_mb(),
so there are no changes in semantics.
Also simplify definition of smp_mb(), smp_rmb(), and smp_wmb() to be just
barrier() in the non-SMP case.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/851/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 19:54:21 +0000 (11:54 -0800)]
MIPS: Octeon: Register some devices on the I2C bus.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: linux-i2c@vger.kernel.org
To: ben-linux@fluff.org
To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com>
Patchwork: http://patchwork.linux-mips.org/patch/845/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Rade Bozic [Thu, 28 Jan 2010 20:47:07 +0000 (12:47 -0800)]
MIPS: I2C: Add driver for Cavium OCTEON I2C ports.
Signed-off-by: Rade Bozic <rade.bozic.ext@nsn.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Michael Lawnick <michael.lawnick.ext@nsn.com>
To: linux-mips@linux-mips.org
To: linux-i2c@vger.kernel.org
To: ben-linux@fluff.org
To: khali@linux-fr.org Cc: rade.bozic.ext@nsn.com Cc: Michael Lawnick <michael.lawnick.ext@nsn.com>
Patchwork: http://patchwork.linux-mips.org/patch/890/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Thu, 7 Jan 2010 21:23:41 +0000 (13:23 -0800)]
MIPS: Octeon: Add I2C platform device.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: linux-i2c@vger.kernel.org
To: ben-linux@fluff.org
To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com>
Patchwork: http://patchwork.linux-mips.org/patch/847/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Robert P. J. Day [Thu, 31 Dec 2009 20:39:00 +0000 (15:39 -0500)]
MIPS: Simplify param.h by using <asm-generic/param.h>
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/810/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Tue, 8 Dec 2009 18:18:13 +0000 (19:18 +0100)]
MIPS: Alchemy: get rid of common/reset.c
Implement reset / poweroff in the board code instead. The peripheral reset
code is gone too since YAMON which all in-tree boards use does the same
work when it boots.
David Daney [Fri, 4 Dec 2009 21:52:36 +0000 (13:52 -0800)]
MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.
For 64-bit kernels with 64KB pages and two level page tables, there are
42 bits worth of virtual address space This is larger than the 40 bits of
virtual address space obtained with the default 4KB Page size and three
levels, so there are no draw backs for using two level tables with this
configuration.
Manuel Lauss [Mon, 23 Nov 2009 19:40:00 +0000 (20:40 +0100)]
MIPS: Alchemy: use runtime cpu detection in GPIO code.
Remove the cpu subtype cpp macros in favor of runtime detection,
to improve compile coverage of the alchemy common code.
(Increases kernel size by 700 bytes).
Florian Fainelli [Tue, 10 Nov 2009 00:13:38 +0000 (01:13 +0100)]
NET: au1000-eth: Convert to platform_driver model
This patch converts the au1000-eth driver to become a full platform-driver
as it ought to be. We now pass PHY-speficic configurations through
platform_data but for compatibility the driver still assumes the default
settings (search for PHY1 on MAC0) when no platform_data is passed. Tested
on my MTX-1 board.
Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Acked-by: David S. Miller <davem@davemloft.net>
Patchwork: http://patchwork.linux-mips.org/patch/619/
Patchwork: http://patchwork.linux-mips.org/patch/963/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Tue, 10 Nov 2009 00:13:30 +0000 (01:13 +0100)]
MIPS: Alchemy: Add au1000-eth platform device
This patch makes the board code register the au1000-eth platform device. The
au1000-eth platform data can be overriden with the au1xxx_override_eth_cfg
function like it has to be done for the Bosporus board which uses a
different MAC/PHY setup.
Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: David Miller <davem@davemloft.net> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/618/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Machine driver for DB1200 AC97 and I2S audio systems, intended as a proper
reference asoc machine for Alchemy-based systems. AC97/I2S can be selected
at boot time by setting switch S6.7.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Cc: alsa-devel@alsa-project.org Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Mon, 2 Nov 2009 20:21:43 +0000 (21:21 +0100)]
MIPS: Alchemy: Extended DB1200 board support.
Create own directory for DB1200 code and update it with new features.
- SPI support:
- tmp121 temperature sensor
- SPI flash on DB1200
- I2C support
- NE1619 sensor
- AT24 eeprom
- I2C/SPI can be selected at boot time via switch S6.8
- Carddetect IRQs for SD cards.
- gen_nand based NAND support.
- hexleds count sleep/wake transitions.
Manuel Lauss [Mon, 19 Oct 2009 10:53:37 +0000 (12:53 +0200)]
MIPS: Alchemy: physmap-flash for all devboards
Replace the devboard NOR MTD mapping driver with physmap-flash support.
Also honor the "swapboot" switch settings wrt. to the layout of the
NOR partitions.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Wed, 28 Oct 2009 20:37:28 +0000 (21:37 +0100)]
SERIAL 8250: Fixes for Alchemy UARTs.
Limit the amount of address space claimed for Alchemy serial ports to
0x1000. On the Au1300, ports are only 0x1000 apart, and the registers
only extend to 0x110 at most on all supported alchemy models.
On the Au1300 the autodetect logic no longer works and this makes it
necessary to specify the port type through platform data. Because of
this the MSR quirk needs to be moved outside the autoconfig() function
which will no longer be called when UPF_FIXED_TYPE is specified.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Wed, 28 Oct 2009 20:49:46 +0000 (21:49 +0100)]
MIPS: Alchemy: UARTs are of type 16550A
UART autodetection breaks on the Au1300 but the IP blocks are identical,
at least according to the datasheets. Help the 8250 driver by passing
on uart type information via platform data.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Thu, 15 Oct 2009 16:49:27 +0000 (18:49 +0200)]
MIPS: Alchemy: prom_putchar is board dependent
This patch replaces the general alchemy prom_putchar() implementation
in favor of board-specific versions: The UART where the output of
prom_putchar is directed to really depends on the board, the current
implementation hardcodes this on a per-SoC basis which is just wrong.
So a generic uart tx function is provided in the alchemy headers,
and the boards can provide their own prom_putchar with custom
destination uart, and all in-kernel alchemy boards support
early printk.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Tue, 13 Oct 2009 18:22:35 +0000 (20:22 +0200)]
MIPS: Alchemy: change dbdma to accept physical memory addresses
DMA can only be done from physical addresses; move the "virt_to_phys"
source/destination buffer address translation from the dbdma queueing
functions (since the hardware can only DMA to/from physical addresses)
to their respective users.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Tue, 13 Oct 2009 18:22:34 +0000 (20:22 +0200)]
MIPS: Alchemy: remove dbdma compat macros
Remove dbdma compat macros, move remaining users over to default
queueing functions and -flags.
(Queueing function signature has changed in order to give
a build failure instead of silent functional changes due
to the no longer implicitly specified DDMA_FLAGS_IE flag)
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Wed, 7 Oct 2009 18:15:15 +0000 (20:15 +0200)]
MIPS: Alchemy: Stop IRQ name sharing
Eliminate the sharing of IRQ names among the differenct Alchemy
variants. IRQ numbers need no longer be hidden behind a
CONFIG_SOC_AU1XXX symbol: step 1 in my quest to make the Alchemy
code less reliant on a hardcoded subtype.
This patch also renames the GPIO irq number constants. It's really
an interrupt line, NOT a GPIO number!
Code which relied on certain irq numbers to have the same name
across all supported cpu subtypes is changed to determine current
cpu subtype at runtime; in some places this isn't possible so
a "compat" symbol is used.
Run-tested on DB1200.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The Alchemy hardware provides a method to prioritize interrupts
on a controller by assigning them to a differenct core request line.
Assign usb device request interrupt to IC0 Request 0 (which has
highest priority in the core and the dispatcher) and others to
Request 1. The explicit check for usb device request occurrence
should be obsolete now.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Sun, 4 Oct 2009 12:55:28 +0000 (14:55 +0200)]
MIPS: Alchemy: devboards: wire up new PCMCIA driver.
Register the PCMCIA driver on all boards supported by it,
get rid of now-unused pcmcia macros in the board headers
(and subsequently empty pb1100/pb1500 ones).
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Sun, 4 Oct 2009 12:55:27 +0000 (14:55 +0200)]
MIPS: PCMCIA: new socket driver for Au1000 demoboards.
New PCMCIA socket driver for all Db/Pb1xxx boards (except Pb1000),
which replaces au1000_db1x00.c and (most of) au1000_pb1x00.c.
Notable improvements:
- supports Db1000, DB/PB1100/1500/1550/1200.
- support for carddetect and statuschange IRQs.
- pcmcia socket mem/io/attr areas and irqs passed through
platform resource information.
- doesn't freeze system during card insertion/ejection like
the one it replaces.
- boardtype is automatically detected using BCSR ID register.
Manuel Lauss [Sun, 4 Oct 2009 12:55:26 +0000 (14:55 +0200)]
MIPS: Alchemy: remove board_init_irq() function.
remove board_init_irq(): On all in-kernel boards it is sufficient to
initialize board interrupts in an arch_initcall by using the default
linux irq functions.
Some small irqmap.c files have been folded into board_setup files.
Run-tested on DB1200; compile-tested on all other affected boards.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Manuel Lauss [Sun, 4 Oct 2009 12:55:24 +0000 (14:55 +0200)]
MIPS: Alchemy: devboard register abstraction
All Alchemy development boards have external CPLDs with a few registers
in them. They all share an identical register layout with only a few
minor differences (except the PB1000) in bit functions and base
addresses.
This patch
- adds a primitive facility to initialize and use these external
registers,
- replaces all occurrences of bcsr->xxx accesses with calls to the new
functions (the pb1200 cascade irq handling code is special).
- collects BCSR register information scattered throughout the board
headers in a central place.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Christian Kujau [Fri, 26 Feb 2010 17:25:14 +0000 (17:25 +0000)]
Remove EXPERIMENTAL from NFS_FSCACHE
There's currently an open Ubuntu bug[0], with the intent to compile NFS_FSCACHE
(and possibly AFS_FSCACHE, 9P_FSCACHE) into the standard Ubuntu kernel.
However, since *_FSCACHE still depends on EXPERIMENTAL, this won't happen.
As Arjan van de Ven pointed out[1], the EXPERIMENTAL flag doesn't mean that
much any more, I propose the following patch to fs/nfs/Kconfig. I'd do the
same for fs/9p/Kconfig and fs/afs/Kconfig, but as I did not test 9p or AFS, I
feel it would not be appropriate for me to remove the flag.
Linus Torvalds [Sat, 27 Feb 2010 01:20:18 +0000 (17:20 -0800)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
toshiba_acpi: Add full hotkey support
hp-wmi: Add support for tablet rotation key
dell-laptop: Add another Dell laptop to the DMI whitelist
classmate-laptop: use a single MODULE_DEVICE_TABLE to get correct aliases
dell-laptop: Pay attention to which devices the hardware switch controls
dell-laptop: Use buffer with 32-bit physical address
dell-laptop: Blacklist machines not supporting dell-laptop
dell-laptop: Block software state changes when rfkill hard blocked
dell-laptop: Fix small memory leak
dell-laptop: Fix platform device unregistration
dell-laptop: Update rfkill state on kill switch
compal-laptop: Replace sysfs support with rfkill support
compal-laptop: Add support for known Compal made Dell laptops
MAINTAINERS: update drivers/platform/x86 information
Linus Torvalds [Sat, 27 Feb 2010 01:19:30 +0000 (17:19 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
dlm: use bastmode in debugfs output
dlm: Send lockspace name with uevents
dlm: send reply before bast
dlm: fix ordering of bast and cast