On Thu, Oct 15, 2009 at 06:25:14PM -0700, Dan Williams wrote:
[ added Leo and Timur to the Cc ]
On Wed, Oct 14, 2009 at 11:41 PM, Vishnu Suresh vis...@freescale.com wrote:
This patch disables the use of DMA_INTERRUPT capability with Async_tx
The fsldma produces a null transfer with
On Thu, Dec 03, 2009 at 11:52:25AM -0800, David Hawkins wrote:
Hi Jeff,
yes. We are using a canyonlands board with 460ex.
Ok.
2. You have some PCI device - what? Have you tested it works in a
standard PCI bus? Eg. ran lspci from an x86 host.
It is a FPGA board that we are
On Thu, Dec 03, 2009 at 11:39:00AM -0800, Jeff Hane wrote:
On Thu, 2009-12-03 at 09:11 -0800, David Hawkins wrote:
Hi Jeff,
I'm trying to get interrupts working for my PCI device on a 460ex and
am having problem. My ISR never triggers.
I'm new to PCI(and ppc) and LDD said that
On Wed, Dec 16, 2009 at 03:47:48PM -0700, Dan Williams wrote:
Kumar Gala wrote:
Changes with respect to v1 as per comments received
o. Rebased to linux-next as of 20091216
o. The selection is based exclusive of fsldma
o. Intoduced a new Kernel Configuration variable
*. This enables
On Fri, Dec 18, 2009 at 03:17:42PM -0700, Dan Williams wrote:
On Fri, Dec 18, 2009 at 8:02 AM, Li Yang-R58472 r58...@freescale.com wrote:
Subject: Re: [PATCH v2 2/2] Crypto: Talitos: Support for
Async_tx XOR offload
Ira W. Snyder wrote:
Yes, I have used the device_prep_dma_interrupt
This patch series cleans up the Freescale DMAEngine driver, including
verifying the locking and making sure that all code paths are correct.
There were a few places that seemed suspicious, and they have been fixed.
I have written a quick memory-memory DMAEngine test driver, and the
performance is
Remove some unused members from the fsldma data structures. A few trivial
uses of struct resource were converted to use the stack rather than keeping
the memory allocated for the lifetime of the driver.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 17
-52
fsl_chan_xfer_ld_queue 500 436 -64
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 83 +++---
1 files changed, 45 insertions(+), 38 deletions(-)
diff --git a/drivers/dma/fsldma.c b
Most functions in the standard library use dst as a parameter, rather
than dest. This renames all use of dest to dst to match the usual
convention.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 32
drivers/dma/fsldma.h |2
This is the beginning of a cleanup which will change all instances of
fsl_dma to fsldma to match the name of the driver itself.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 128 ++---
drivers/dma/fsldma.h | 26
by removing the controller's interrupt
property from the device tree. Testing has not shown any problems with this
configuration. All in-tree device trees already have an interrupt property
specified for each channel.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
Documentation/powerpc/dts
This fixes some errors in the cleanup paths of the OF subsystem, including
missing checks for ioremap failing. Also, some variables were renamed for
brevity.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 259
of descriptors
are freed in a loop. Create functions to handle this, and use them instead
of open-coding the loop each time.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 386 ++---
drivers/dma/fsldma.h |3 +-
2 files
The name fsl_chan seems too long, so it has been shortened to fchan.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 446 +-
1 files changed, 223 insertions(+), 223 deletions(-)
diff --git a/drivers/dma/fsldma.c b
On Wed, Jan 06, 2010 at 12:04:22PM -0600, Scott Wood wrote:
On Thu, Dec 31, 2009 at 10:10:45PM -0800, Ira W. Snyder wrote:
The name fsl_chan seems too long, so it has been shortened to fchan.
Could be just chan, no need for namespacing here.
True. A few functions have a parameter struct
On Wed, Jan 06, 2010 at 12:02:26PM -0600, Scott Wood wrote:
On Thu, Dec 31, 2009 at 10:10:44PM -0800, Ira W. Snyder wrote:
The IRQ probing is needlessly complex. All off the 83xx device trees in
arch/powerpc/boot/dts/ specify 5 interrupts per DMA controller: one for the
controller, and one
On Wed, Jan 06, 2010 at 12:27:11PM -0600, Scott Wood wrote:
Ira W. Snyder wrote:
On Wed, Jan 06, 2010 at 12:04:22PM -0600, Scott Wood wrote:
On Thu, Dec 31, 2009 at 10:10:45PM -0800, Ira W. Snyder wrote:
The name fsl_chan seems too long, so it has been shortened to fchan.
Could be just
This patch series cleans up the Freescale DMAEngine driver, including
verifying the locking and making sure that all code paths are correct.
There were a few places that seemed suspicious, and they have been fixed.
I have written a quick memory-memory DMAEngine test driver, and the
performance is
Most functions in the standard library use dst as a parameter, rather
than dest. This renames all use of dest to dst to match the usual
convention.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 32
drivers/dma/fsldma.h |2
-52
fsl_chan_xfer_ld_queue 500 436 -64
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 83 +++---
1 files changed, 45 insertions(+), 38 deletions(-)
diff --git a/drivers/dma/fsldma.c b
Remove some unused members from the fsldma data structures. A few trivial
uses of struct resource were converted to use the stack rather than keeping
the memory allocated for the lifetime of the driver.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 17
This is the beginning of a cleanup which will change all instances of
fsl_dma to fsldma to match the name of the driver itself.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 128 ++---
drivers/dma/fsldma.h | 26
The name fsl_chan seems too long, so it has been shortened to chan. There
are only a few places where the higher level struct dma_chan *chan name
conflicts. These have been changed to struct dma_chan *dchan instead.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c
(approx 100,000 ns / 0.1ms). This is probably at or
near the limits of my measurement accuracy.
Ira
Regards,
Dipen
-Original Message-
From: Dudhat Dipen-B09055
Sent: Tuesday, January 05, 2010 11:38 AM
To: 'Ira W. Snyder'; dan.j.willi...@intel.com
Cc: ga...@kernel.crashing.org
On Mon, Feb 22, 2010 at 11:40:31AM -0600, Steven J. Magnani wrote:
fsl_dma_tx_submit() only sets the cookie on the first descriptor of a
transaction. It should set the cookie on all.
Signed-off-by: Steven J. Magnani st...@digidescorp.com
---
diff -uprN a/drivers/dma/fsldma.c
On Mon, Feb 22, 2010 at 09:26:13PM +0100, Guennadi Liakhovetski wrote:
On Mon, 22 Feb 2010, Steven J. Magnani wrote:
diff -uprN a/include/linux/dmaengine.h b/include/linux/dmaengine.h
--- a/include/linux/dmaengine.h 2010-02-22 11:18:11.0 -0600
+++ b/include/linux/dmaengine.h
() and friends
* add message unit to MPC8349EMDS dts file
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
This is the third RFC posting of this driver. I got some feedback, and have
corrected the problems. Thanks to everyone who has done review! I have
gotten off-list feedback
On Wed, Feb 17, 2010 at 07:59:14PM +0100, Albrecht Dreß wrote:
This patch improves the recovery of the MPC's I2C bus from errors like bus
hangs resulting in timeouts:
1. make the bus timeout configurable, as it depends on the bus clock and
the attached slave chip(s); default is still 1
On Wed, Aug 11, 2010 at 07:49:40PM +0530, Ravi Gupta wrote:
Also, when I try to export a gpio in sysfs
echo 9 /sys/class/gpio/export
It gives me an error in dmesg
gpio_request: gpio-9 (sysfs) status -22
export_store: status -22
Here is a look of sysfs on my machine
# ls
On Thu, Aug 12, 2010 at 03:55:49PM +0530, Ravi Gupta wrote:
On Wed, Aug 11, 2010 at 9:45 PM, MJ embd mj.e...@gmail.com wrote:
u can directly access GPIO registers in kernel, by ioremap of GPIO
memory mapped registers.
you might need to check
- muxing of gpio
-mj
Hi MJ,
On Mon, Aug 16, 2010 at 05:52:41PM +0530, Ravi Gupta wrote:
Hi,
I have defined a header file for ioctls macros definitions. I am including
it in both, my user space application as well as in my device driver. Now
there are some macros that I want to be visible only in device drive and
some
On Tue, Aug 17, 2010 at 03:05:05PM -0700, Tirumala Marri wrote:
I am seeing weird issue with latest kernel. “make uImage” failes with “no
rule to make target” error message.
Has anything changed recently ?
---msg
{tma...@svdclab61} make 44x/canyonlands_defconfig
On Thu, Aug 19, 2010 at 02:29:49PM +0200, Arnd Bergmann wrote:
On Thursday 19 August 2010, Richard Cochran wrote:
On Wed, Aug 18, 2010 at 05:02:03PM +0200, Arnd Bergmann wrote:
You might want to use callbacks for these system calls that you
can register to at module load time, like it
The slab.h header is required to use the kmalloc() family of functions.
Due to recent kernel changes, this header must be directly included by
code that calls into the memory allocator.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
Without this patch, any code which includes this header
Hello all,
I've written several drivers for a custom board. The board is basically
an mpc8349_mds board with some extra FPGAs for data processing.
All of the drivers were written to interface with a custom system
controller FPGA, which handles things like LED control, FPGA
programming, and fast
On Thu, Sep 02, 2010 at 03:17:52PM -0500, Kumar Gala wrote:
On Sep 2, 2010, at 3:04 PM, Ira W. Snyder wrote:
Hello all,
I've written several drivers for a custom board. The board is basically
an mpc8349_mds board with some extra FPGAs for data processing.
All of the drivers were
On Thu, Sep 02, 2010 at 05:24:34PM -0400, Sean MacLennan wrote:
On Thu, 2 Sep 2010 14:12:22 -0700
Ira W. Snyder i...@ovro.caltech.edu wrote:
To give you three example drivers:
1) Data processing FPGA access driver
This driver provides a simple character device to userspace which
layout is expected to
change soon, so I won't post the driver until that is finished. The PPS
driver will be posted seperately from this patch series; it is very
generic.
Thanks for any review and comments you can offer!
Ira
Ira W. Snyder (3):
fpga: add basic CARMA board support
fpga: add
This adds basic support for the system controller FPGA on the OVRO CARMA
board. This patch only adds infrastructure that will be used by later
drivers.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/Kconfig |2 +
drivers/Makefile|1 +
drivers/fpga
of
correlation data from the FPGAs. This lowers the realtime scheduling
requirements for the userspace process reading the device.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/fpga/carma/Kconfig |9 +
drivers/fpga/carma/Makefile |1 +
drivers/fpga/carma/carma
This adds support for programming the data processing FPGAs on the OVRO
CARMA board. These FPGAs have a special programming sequence that
requires that we program the Freescale DMA engine, which is only
available inside the kernel.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers
On Fri, Sep 03, 2010 at 04:40:33PM -0700, Andrew Morton wrote:
On Thu, 2 Sep 2010 12:47:52 -0700
Ira W. Snyder i...@ovro.caltech.edu wrote:
The slab.h header is required to use the kmalloc() family of functions.
Due to recent kernel changes, this header must be directly included by
code
won't post the driver until that is finished. The PPS
driver will be posted seperately from this patch series; it is very
generic.
Thanks for any review and comments you can offer!
Ira
Ira W. Snyder (5):
fsldma: fix missing header include
fsldma: move DMA_SLAVE support functions to the driver
The slab.h header is required to use the kmalloc() family of functions.
Due to recent kernel changes, this header must be directly included by
code that calls into the memory allocator.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
arch/powerpc/include/asm/fsldma.h |1 +
1 files
The DMA_SLAVE support functions all existed as static inlines in the
driver specific header arch/powerpc/include/asm/fsldma.h. Move the body
of the functions to the driver itself, and EXPORT_SYMBOL_GPL() them.
At the same time, add the missing linux/list.h header.
Signed-off-by: Ira W. Snyder i
This adds support for programming the data processing FPGAs on the OVRO
CARMA board. These FPGAs have a special programming sequence that
requires that we program the Freescale DMA engine, which is only
available inside the kernel.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers
Hello everyone,
I'm running Linux on a Freescale MPC8349EA board (PowerPC 6xx processor). When
I enable the CONFIG_PROVE_LOCKING option, the kernel fails to boot. If I
toggle that option (and ONLY that option) off, the kernel boots normally.
The lockup happens very, very early during boot. Much
On Thu, Sep 09, 2010 at 11:02:36AM +1000, Benjamin Herrenschmidt wrote:
On Wed, 2010-09-08 at 16:21 -0700, Ira W. Snyder wrote:
I am happy to provide more information if it will help. I'm not
especially
good at working the debugger. I can't get it to stop at machine_init()
and let
On Thu, Sep 09, 2010 at 12:58:16PM +1000, Benjamin Herrenschmidt wrote:
On Wed, 2010-09-08 at 19:52 -0700, Ira W. Snyder wrote:
I will attempt to get the debugger to stop at start_kernel. I'm having
trouble driving the JTAG debugger (a BDI2000). I have used Denx's
guide
[1] in the past
On Thu, Sep 09, 2010 at 09:23:07AM -0700, Ira W. Snyder wrote:
On Thu, Sep 09, 2010 at 12:58:16PM +1000, Benjamin Herrenschmidt wrote:
On Wed, 2010-09-08 at 19:52 -0700, Ira W. Snyder wrote:
I will attempt to get the debugger to stop at start_kernel. I'm having
trouble driving
On Thu, Sep 09, 2010 at 11:44:46AM -0700, Ira W. Snyder wrote:
[ snip a bunch of info: summary below ]
I've also found that setting a breakpoint at 0x0 stops right when the
Linux kernel starts, at symbol _start. AFAIK, the MMU is not yet
enabled, so I have to subtract 0xc000 from all
On Thu, Sep 09, 2010 at 02:10:59PM -0500, Timur Tabi wrote:
On Thu, Sep 9, 2010 at 1:44 PM, Ira W. Snyder i...@ovro.caltech.edu wrote:
Single stepping through the initial assembly portion of kernel startup
shows that the FDT gets clobbered during the function early_init(). This
trace
On Thu, Sep 09, 2010 at 02:40:50PM -0500, Timur Tabi wrote:
Ira W. Snyder wrote:
As noted in another email, it appears that U-Boot puts the FDT in such a
place that Linux overwrites it with the BSS. The CONFIG_PROVE_LOCKING=y
option expands the BSS by a large amount, which causes the error
On Thu, Sep 09, 2010 at 03:36:31PM -0500, Timur Tabi wrote:
Ira W. Snyder wrote:
That did it!
Yea!
I'm using include/configs/MPC8349EMDS.h. On that board,
CONFIG_SYS_BOOTMAPSZ is 8MB. Boosting it to 16MB fixed the problem and
the kernel now boots.
Ah, yes. I believe the reason
On Wed, Sep 08, 2010 at 09:41:17AM -0700, Ira W. Snyder wrote:
Hello everyone,
This is the second posting of these drivers, taking into account comments
from the RFCv1 post. Thanks to all that contributed.
Any comments on this series? I haven't heard anything for more than a
week
not be fragmented into
multiple smaller chains. This is what is achieved by submitting all
descriptors without using chaining.
Ira W. Snyder (2):
dmaengine: add support for scatterlist to scatterlist transfers
fsldma: use generic support for scatterlist to scatterlist transfers
arch/powerpc
This adds support for scatterlist to scatterlist DMA transfers. As
requested by Dan, this is hidden behind an ifdef so that it can be
selected by the drivers that need it.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/Kconfig |4 ++
drivers/dma/dmaengine.c | 119
to
scatterlist transfers, this operation is no longer needed. The generic
support is used for scatterlist to scatterlist transfers.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
arch/powerpc/include/asm/fsldma.h | 115 ++--
drivers/dma/fsldma.c | 219
On Fri, Sep 24, 2010 at 01:40:56PM -0700, Dan Williams wrote:
On Fri, Sep 24, 2010 at 12:46 PM, Ira W. Snyder i...@ovro.caltech.edu wrote:
This adds support for scatterlist to scatterlist DMA transfers. As
requested by Dan, this is hidden behind an ifdef so that it can be
selected
On Fri, Sep 24, 2010 at 02:53:14PM -0700, Dan Williams wrote:
On Fri, 2010-09-24 at 14:24 -0700, Ira W. Snyder wrote:
On Fri, Sep 24, 2010 at 01:40:56PM -0700, Dan Williams wrote:
I don't think any dma channels gracefully handle descriptors that were
prepped but not submitted. You would
On Fri, Sep 24, 2010 at 03:04:19PM -0700, Ira W. Snyder wrote:
On Fri, Sep 24, 2010 at 02:53:14PM -0700, Dan Williams wrote:
On Fri, 2010-09-24 at 14:24 -0700, Ira W. Snyder wrote:
On Fri, Sep 24, 2010 at 01:40:56PM -0700, Dan Williams wrote:
I don't think any dma channels gracefully
would recommend against committing this until I've tested it on real
hardware.
Ira W. Snyder (2):
dmaengine: add support for scatterlist to scatterlist transfers
fsldma: use generic support for scatterlist to scatterlist transfers
arch/powerpc/include/asm/fsldma.h | 115
This adds support for scatterlist to scatterlist DMA transfers. This is
currently hidden behind a configuration option, which will allow drivers
which need this functionality to select it individually.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/Kconfig |3
to
scatterlist transfers, this operation is no longer needed. The generic
support is used for scatterlist to scatterlist transfers.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
arch/powerpc/include/asm/fsldma.h | 115 ++--
drivers/dma/fsldma.c | 219
On Mon, Sep 27, 2010 at 05:23:34PM +0200, Linus Walleij wrote:
2010/9/25 Ira W. Snyder i...@ovro.caltech.edu:
This adds support for scatterlist to scatterlist DMA transfers.
This is a good idea, we have a local function to do this in DMA40 already,
stedma40_memcpy_sg().
I think
of the ste_dma40 driver which should do the right thing, but the
authors should check and make sure.
Ira W. Snyder (4):
dma: add support for scatterlist to scatterlist copy
fsldma: implement support for scatterlist to scatterlist copy
fsldma: remove DMA_SLAVE support
ste_dma40: implement support
DMAEngine API. Futher patches will add support in
individual drivers.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/dmaengine.c |2 ++
include/linux/dmaengine.h |6 ++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/dma/dmaengine.c b/drivers/dma
configuration, such as enabling external control.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
arch/powerpc/include/asm/fsldma.h | 115 ++--
drivers/dma/fsldma.c | 219 +++--
2 files changed, 48 insertions(+), 286 deletions(-)
diff
On Tue, Sep 28, 2010 at 09:26:51AM -0500, david.hag...@gmail.com wrote:
I finally found my problems accessing the PPC OWBAR registers as an
endpoint (copy/paste brown paper bag bug on my part), but I still get a
bus fault trying to access the device.
The problem is that I don't know if the
On Wed, Sep 29, 2010 at 02:52:16PM -0700, Dan Williams wrote:
On Mon, Sep 27, 2010 at 3:57 PM, Ira W. Snyder i...@ovro.caltech.edu wrote:
Now that the generic DMAEngine API has support for scatterlist to
scatterlist copying, this implementation of the DMA_SLAVE API is no
longer necessary
Now that the DMAEngine API has support for scatterlist to scatterlist
copy, implement support for the Freescale DMA controller.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 128 -
1 files changed, 125 insertions
for external control
- fsldma now uses the standard struct dma_slave_config
- tested on real hardware
Ira W. Snyder (4):
dma: add support for scatterlist to scatterlist copy
fsldma: implement support for scatterlist to scatterlist copy
fsldma: improved DMA_SLAVE support
ste_dma40: implement
- *
- * Copyright (c) 2009 Ira W. Snyder i...@ovro.caltech.edu
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed as is without any warranty of any
- * kind, whether express or implied.
- */
-
-#ifndef __ARCH_POWERPC_ASM_FSLDMA_H__
-#define
On Thu, Aug 22, 2013 at 02:43:38PM -0700, David Hawkins wrote:
Hi S.Saravanan,
I have a custom board with four MPC8640 nodes connected over
a transparent PCI express switch . In this configuration one node is
configured as host(Root Complex) and others as agents(End Point). Thus
the
On Wed, Jun 13, 2012 at 05:21:22PM +0200, Guillaume Dargaud wrote:
Hello all,
I just updated to the most recent kernel and a driver I wrote last year
won't compile:
xad.c:534:2: error: implicit declaration of function
'of_register_platform_driver'
I see references to this function as
.
Other than that, you can add my:
Acked-by: Ira W. Snyder i...@ovro.caltech.edu
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Signed-off-by: Qiang Liu qiang@freescale.com
---
drivers/dma/fsldma.c | 31
On Wed, Jul 11, 2012 at 05:01:25PM +0800, Qiang Liu wrote:
Modify the release process of dma descriptor for avoiding exception when
enable config NET_DMA, release dma descriptor from 1st to last second, the
last descriptor which is reserved in current descriptor register may not be
completed,
vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Cc: Ira W. Snyder i...@ovro.caltech.edu
Signed-off-by: Qiang Liu qiang@freescale.com
---
drivers/dma/fsldma.c | 378 +
drivers/dma/fsldma.h |1 +
2 files changed, 225 insertions
On Tue, Jul 17, 2012 at 07:06:33AM +, Liu Qiang-B32616 wrote:
-Original Message-
From: Ira W. Snyder [mailto:i...@ovro.caltech.edu]
Sent: Tuesday, July 17, 2012 4:01 AM
To: Liu Qiang-B32616
Cc: linux-cry...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; Phillips
Kim-R1AAHA
On Mon, Jul 30, 2012 at 12:48:41PM -0500, Timur Tabi wrote:
qiang@freescale.com wrote:
Add memory copy self test when probe device, fsl-dma will be disabled
if self test failed.
Is this a real problem that can occur? The DMA driver used to have a
self-test, but I removed it a long
] [c0429080] raid5d+0x3d4/0x5b4
[ecf41f40] [c04329b8] md_thread+0x138/0x16c
[ecf41f90] [c008277c] kthread+0x8c/0x90
[ecf41ff0] [c0011630] kernel_thread+0x4c/0x68
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Cc: Ira W. Snyder i
On Tue, Jul 31, 2012 at 04:09:28AM +, Liu Qiang-B32616 wrote:
-Original Message-
From: Ira W. Snyder [mailto:i...@ovro.caltech.edu]
Sent: Tuesday, July 31, 2012 5:10 AM
To: Liu Qiang-B32616
Cc: linux-cry...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; Phillips
Kim-R1AAHA
From: Ira W. Snyder i...@ovro.caltech.edu
Hello everyone,
This is my alternative (simpler) attempt at solving the problems reported
by Qiang Liu with the async_tx API and MD RAID hardware offload support
when using the Freescale DMA driver.
The bug is caused by this driver freeing descriptors
...@freescale.com
Signed-off-by: Qiang Liu qiang@freescale.com
Acked-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 31 ---
1 files changed, 0 insertions(+), 31 deletions(-)
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 8f84761..4f2f212
From: Ira W. Snyder i...@ovro.caltech.edu
There are several places where descriptors are freed using identical
code. Put this code into a function to reduce code duplication.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 32 ++--
1
From: Ira W. Snyder i...@ovro.caltech.edu
The use of spin_lock_irqsave() was a stronger locking mechanism than was
actually needed in many cases.
As the current code is written, spin_lock_bh() everywhere is sufficient.
The next patch in this series will add some code to hardware interrupt
From: Ira W. Snyder i...@ovro.caltech.edu
This function will be modified in the next patch in the series. By
moving the function in a patch separate from the changes, it will make
review easier.
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 96
From: Ira W. Snyder i...@ovro.caltech.edu
The current fsldma driver does not support the async_tx API. This is due
to a bug: all descriptors are released when the hardware is finished
with them. The async_tx API requires that the ACK bit is set by software
before descriptors are freed.
This bug
From: Qiang Liu qiang@freescale.com
Fix a warning of unitialized value when compile with -Wuninitialized.
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Signed-off-by: Qiang Liu qiang@freescale.com
Cc: Kim Phillips
From: Ira W. Snyder i...@ovro.caltech.edu
These drivers set the DMA_INTERRUPT capability bit when requesting a DMA
controller channel. This was historical, and is no longer needed.
Recent changes to the drivers/dma/fsldma.c driver have removed support
for this flag. This makes the carma drivers
On Wed, Aug 01, 2012 at 04:49:43PM +0800, qiang@freescale.com wrote:
From: Qiang Liu qiang@freescale.com
Move the function fsldma_cleanup_descriptor() and fsl_chan_xfer_ld_queue()
ahead of its invoke function for avoiding redundant definition.
Cc: Dan Williams
exclusively.
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Signed-off-by: Qiang Liu qiang@freescale.com
Acked-by: Ira W. Snyder i...@ovro.caltech.edu
---
drivers/dma/fsldma.c | 31 ---
1 files
you intend to fix it?
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Dan Williams dan.j.willi...@gmail.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Cc: Ira W. Snyder i...@ovro.caltech.edu
Signed-off-by: Qiang Liu qiang@freescale.com
---
drivers/dma/fsldma.c
On Wed, Aug 01, 2012 at 04:50:27PM +0800, qiang@freescale.com wrote:
From: Qiang Liu qiang@freescale.com
Fix a warning of unitialized value when compile with -Wuninitialized.
Looks good to me.
Acked-by: Ira W. Snyder i...@ovro.caltech.edu
Cc: Dan Williams dan.j.willi...@intel.com
manipulation of protected fields is done using tasklet context or
weaker, which makes spin_lock_bh() the correct choice.
Other than that,
Acked-by: Ira W. Snyder i...@ovro.caltech.edu
Cc: Dan Williams dan.j.willi...@intel.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Cc
On Thu, Aug 02, 2012 at 07:21:51AM +, Liu Qiang-B32616 wrote:
-Original Message-
From: Ira W. Snyder [mailto:i...@ovro.caltech.edu]
Sent: Thursday, August 02, 2012 1:25 AM
To: Liu Qiang-B32616
Cc: linux-cry...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; linux-
ker
...@gmail.com
Cc: Vinod Koul vinod.k...@intel.com
Cc: Li Yang le...@freescale.com
Signed-off-by: Qiang Liu qiang@freescale.com
Signed-off-by: Ira W. Snyder i...@ovro.caltech.edu
There are two minor nitpicks below. Other than that, the patch looks
excellent to me.
Ira
---
drivers/dma
On Thu, Aug 09, 2012 at 04:19:35PM +0800, qiang@freescale.com wrote:
Hi all,
The following 8 patches enabling fsl-dma and talitos offload raid
operations for improving raid performance and balancing CPU load.
These patches include talitos, fsl-dma and carma module (caram uses
some
On Thu, Apr 11, 2013 at 12:39:00PM -0600, Chris Friesen wrote:
On 04/11/2013 12:12 PM, Kumar Gala wrote:
On Apr 11, 2013, at 10:44 AM, Chris Friesen wrote:
Hi all,
We've got a powerpc system that uses u-boot. In our environment on
bootup u-boot does a DHCP to get networking info,
On Fri, May 06, 2011 at 12:00:34PM +, Kushwaha Prabhakar-B32579 wrote:
Hi,
I want to use this patch as base patch for FSL 85xx platform to support
PCIe Agent.
The work looks to be little old now. So wanted to understand if any
development has happened further on it.
In case no, I
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