Hi,
I am new to linux device driver development and I'm trying to learn the
memory mapping. Currently I am trying to memory map a dma buffer allocated
using pci_alloc_consistent() function.
Now what exactly I want is that whenever I map a char device from user space
program, let say /dev/test, in
Hi David,
Thanks for the quick reply. One more thing, in the end I have to memory map
a DMA buffer allocated using pci_alloc_consisten() function to user space.
*> I think you should be leaving the mapping to the core VM routines.*
*> Furthermore, I don't think *you* should be calling remap_pfn_r
When CPU hotplug is used, some CPUs may be offline at the time a kexec is
performed. The subsequent kernel may expect these CPUs to be already running,
and will declare them stuck. On pseries, there's also a soft-offline (cede)
state that CPUs may be in; this can also cause problems as the kexece
On Mon, Jul 26, 2010 at 11:23 PM, Neil Horman wrote:
> On Tue, Jul 13, 2010 at 09:46:09AM -0400, Neil Horman wrote:
>> Hey all-
>> About 2 years ago now, I sent this patch upstream to allow makedumpfile
>> to properly filter cores on ppc64:
>> http://www.mail-archive.com/ke...@lists.infradea
On Mon, 2010-07-26 at 22:52 -0400, Rick Ramstetter wrote:
> Hi all,
>
> Where can I find the code that sets values in lmb.reserved.region[i]?
> This is in reference to 2.6.27's arch/powerpc/mm/mem.c and
> include/linux/lmb.h
>
> I'm looking specifically for code that sets lmb_region's region.siz
[ Added kexec at lists.infradead.org and linuxppc-dev@lists.ozlabs.org ]
>
> Currently KEXEC_SEGMENT_MAX is only 16 which is too small for machine with
> many memory ranges. When hibernate on a machine with disjoint memory we do
> need one segment for each memory region. Increase this hard limit
Hi Grant,
On Sun, 25 Jul 2010 01:42:23 -0600
Grant Likely wrote:
...
> Hi Anatolij,
>
> Finally got some time tonight to properly dig into this patch. Comments
> below.
Thanks for review and comments! My reply below.
...
> > + n...@4000 {
> > + compatible = "fsl,mpc51
Linus,
Please do a pull from
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perf.git urgent
to get one commit that fixes a problem where, on some Freescale
embedded PowerPC machines, unprivileged userspace could oops the
kernel using the perf_event subsystem. I know it's late, but it is
On Tuesday 27 July 2010, Grant Likely wrote:
> > I suggest to go back to v2 of your patch where you use asm-generic/of.h.
>
> Stephen suggested dropping asm-generic/of.h. I'm happy to do it either way.
I don't mind adding stuff to asm-generic, but I think in this case it would
be easier to keep
On Tue, 27 Jul 2010 22:40:19 +1000
Paul Mackerras wrote:
> Please do a pull from
>
> git://git.kernel.org/pub/scm/linux/kernel/git/paulus/perf.git urgent
>
> to get one commit that fixes a problem where, on some Freescale
> embedded PowerPC machines, unprivileged userspace could oops the
> ke
On Tue, Jul 27, 2010 at 03:34:01PM +0200, Arnd Bergmann wrote:
> On Tuesday 27 July 2010, Grant Likely wrote:
> > > I suggest to go back to v2 of your patch where you use asm-generic/of.h.
> >
> > Stephen suggested dropping asm-generic/of.h. I'm happy to do it either way.
>
> I don't mind adding
On Tue, Jul 27, 2010 at 4:36 AM, Anatolij Gustschin wrote:
> Hi Grant,
>
> On Sun, 25 Jul 2010 01:42:23 -0600
> Grant Likely wrote:
> ...
>> Hi Anatolij,
>>
>> Finally got some time tonight to properly dig into this patch. Comments
>> below.
>
> Thanks for review and comments! My reply below.
On Tue, 27 Jul 2010 10:58:33 -0600
Grant Likely wrote:
...
> >> > + s...@11900 {
> >> > + compatible = "fsl,mpc5121-psc-spi",
> >> > "fsl,mpc5121-psc";
> >> > + cell-index = <9>;
> >>
> >> Try to drop the cell-index properties. They are a
On Tue, Jul 27, 2010 at 11:28 AM, Anatolij Gustschin wrote:
> On Tue, 27 Jul 2010 10:58:33 -0600
> Grant Likely wrote:
> ...
>> >> > + s...@11900 {
>> >> > + compatible = "fsl,mpc5121-psc-spi",
>> >> > "fsl,mpc5121-psc";
>> >> > + cell-in
[cc'ing spi-devel-general]
On Mon, Jul 26, 2010 at 2:20 AM, Hu Mingkai-B21284 wrote:
>
>
>> -Original Message-
>> From: glik...@secretlab.ca [mailto:glik...@secretlab.ca] On
>> Behalf Of Grant Likely
>> Sent: Monday, July 26, 2010 3:53 PM
>> To: Hu Mingkai-B21284
>> Cc: linuxppc-...@ozlab
Milton Miller writes:
> [ Added kexec at lists.infradead.org and linuxppc-dev@lists.ozlabs.org ]
>
>>
>> Currently KEXEC_SEGMENT_MAX is only 16 which is too small for machine with
>> many memory ranges. When hibernate on a machine with disjoint memory we do
>> need one segment for each memory r
* Add tft display module compatibility for new
hardware modules
Signed-off-by: Adrian Alonso
---
drivers/video/xilinxfb.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/video/xilinxfb.c b/drivers/video/xilinxfb.c
index 574dc54..29b5daa 100644
--- a/drivers/vi
Adds IFM PDM360NG device tree and platform code.
Currently following is supported:
- Spansion S29GL512P 256 MB NOR flash
- ST Micro NAND 1 GiB flash
- DIU, please use "fbcon=map:5 video=fslfb:800x480...@60"
at the kernel command line to enable PrimeView PM070WL3
Display support.
- FEC
-
Hello Piotr, everybody,
I've found that mpc512x_dma channels hang sometimes while accessed from
more than one thread simultaneously.
The easiest way to reproduce this error I've managed to found is using
dmatest module with rather high threads_per_chan value (20 should be
enough):
-bash-3.2#
On Tue, Jul 13, 2010 at 05:56:21PM -0700, John Stultz wrote:
> Currently powerpc's update_vsyscall calls an inline update_gtod.
> However, both are straightforward, and there are no other users,
> so this patch merges update_gtod into update_vsyscall.
>
> Compiles, but otherwise untested.
This a
This is a note to let you know that I've just added the patch titled
genirq: Deal with desc->set_type() changing desc->chip
to the 2.6.34-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
This is a note to let you know that I've just added the patch titled
genirq: Deal with desc->set_type() changing desc->chip
to the 2.6.33-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
This is a note to let you know that I've just added the patch titled
genirq: Deal with desc->set_type() changing desc->chip
to the 2.6.32-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
Currently we look pretty stupid when printing out a bunch of things in
prom_init.c. eg.
Max number of cores passed to firmware: 0x0080
So I've change this to print in decimal:
Max number of cores passed to firmware: 128 (NR_CPUS = 256)
This required adding a prom_print_dec() fu
On Wed, 2010-07-28 at 09:41 +1000, Paul Mackerras wrote:
> On Tue, Jul 13, 2010 at 05:56:21PM -0700, John Stultz wrote:
>
> > Currently powerpc's update_vsyscall calls an inline update_gtod.
> > However, both are straightforward, and there are no other users,
> > so this patch merges update_gtod i
Currently we look pretty stupid when printing out a bunch of things in
prom_init.c. eg.
Max number of cores passed to firmware: 0x0080
So I've change this to print in decimal:
Max number of cores passed to firmware: 128 (NR_CPUS = 256)
This required adding a prom_print_dec() fu
On Tue, Jul 27, 2010 at 11:28:54AM -0500, Scott Wood wrote:
> Doesn't the setting of .period need to be maintained (it is in the other
> powerpc perf_event implementation that this is derived from)?
Gah, yes it does.
> I don't see how this is a security fix -- the existing initializer above
> sh
This serial patch adds some workarounds to enable mmc card
support for P4080 chip.
___
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
P4080 ESDHC controller induces weird register setting.
This patch adds the workaround to correct the weird register setting.
Signed-off-by: Roy Zang
---
drivers/mmc/host/sdhci-of-core.c |5 +
drivers/mmc/host/sdhci.c | 13 +
drivers/mmc/host/sdhci.h |2 +
From: Jerry Huang
Add auto CMD12 command support for eSDHC driver.
This is needed by P4080 and P1022 for block read/write.
Manual asynchronous CMD12 abort operation causes protocol violations on
these silicons.
Signed-off-by: Jerry Huang
Signed-off-by: Roy Zang
---
drivers/mmc/host/sdhci-of-c
Signed-off-by: Roy Zang
---
arch/powerpc/boot/dts/p4080ds.dts |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/boot/dts/p4080ds.dts
b/arch/powerpc/boot/dts/p4080ds.dts
index 6b29eab..11c8884 100644
--- a/arch/powerpc/boot/dts/p4080ds.dts
+++ b/arch/powerpc/bo
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