On 8/23/24 9:19 PM, Segher Boessenkool wrote:
Hi!
On Fri, Aug 23, 2024 at 03:54:59PM +0200, Christoph Hellwig wrote:
On Fri, Aug 23, 2024 at 08:06:00AM -0500, Segher Boessenkool wrote:
What does "uncached memory" even mean here? Literally it would be
I=1 memory (uncachEABLE memory), but more
Hi!
Thank you all for your insightful insights :-) .
... and derp, used the wrong mail.
On 8/22/24 9:14 AM, Christoph Hellwig wrote:
On Thu, Aug 22, 2024 at 06:39:33AM +, LEROY Christophe wrote:
powerpc has a magic instruction 'dcbz' which clears a full cacheline in
one go. It is far more
Sorry to write a reply to this old mail. But after years, I finally
decided to tackle an "old" problem that has come up...
And unfortunately it is related to this patch. But let me explain.
On 9/16/21 4:52 PM, Christophe Leroy wrote:
dcbz instruction shouldn't be used on non-cached memory. Using
Hi,
got a WARNING splatch (=> boot harddrive is inaccessible - device fails to
boot)
[ cut here ]
WARNING: CPU: 0 PID: 29 at block/blk-settings.c:185
blk_validate_limits+0x154/0x294
Modules linked in:
CPU: 0 PID: 29 Comm: kworker/u4:2 Tainted: GW 6.10.0
ore similar errors)
it was working with 6.7. Looks like it only needed the include
and its compiling fine!
Signed-off-by: Christian Lamparter
---
drivers/spi/spi-ppc4xx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/spi/spi-ppc4xx.c b/drivers/spi/spi-ppc4xx.c
index 03aab661b
Hi Andy!
On 23/07/2021 21:19, Andy Shevchenko wrote:
On Sun, Sep 06, 2020 at 12:06:10AM +0200, Christian Lamparter wrote:
I've been holding on to these devices dts' for a while now.
But ever since the recent purge of the PPC405, I'm feeling
the urge to move forward.
The devi
On Tue, Sep 22, 2020 at 9:14 PM Rob Herring wrote:
>
> On Sat, Sep 19, 2020 at 2:23 PM Christian Lamparter
> wrote:
> >
> > On 2020-09-15 03:05, Rob Herring wrote:
> > > On Sun, Sep 06, 2020 at 12:06:12AM +0200, Christian Lamparter wrote:
> > >> This p
TA is used
concurrently. Because the predecessor (PPC460EX (Canyonlands)) already
had the same problem, this SoC can make use of the existing
dwc2_set_amcc_params() function.
Signed-off-by: Christian Lamparter
---
drivers/usb/dwc2/params.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/dwc
adds the specific compatible string for the DWC2 IP found in the APM82181
SoCs. The APM82181's USB-OTG seems like it was taken from its direct
predecessor: the PPC460EX (canyonlands).
Signed-off-by: Christian Lamparter
---
Documentation/devicetree/bindings/usb/dwc2.yaml | 1 +
1 file chang
On 2020-09-15 03:05, Rob Herring wrote:
On Sun, Sep 06, 2020 at 12:06:12AM +0200, Christian Lamparter wrote:
This patch adds an DTSI-File that can be used by various device-tree
files for APM82181-based devices.
Some of the nodes (like UART, PCIE, SATA) are used by the uboot and
need to stick
Hello,
On 2020-09-08 20:52, Christian Lamparter wrote:
On Tue, Sep 8, 2020 at 9:12 AM Michael Ellerman wrote:
Christian Lamparter writes:
On 2020-06-23 15:03, Michael Ellerman wrote:
With CONFIG_OF_ALL_DTBS=y, as set by eg. allmodconfig, we see lots of
warnings about our dts files, such as
Hello,
On Tue, Sep 8, 2020 at 9:12 AM Michael Ellerman wrote:
> Christian Lamparter writes:
> > On 2020-06-23 15:03, Michael Ellerman wrote:
> >> With CONFIG_OF_ALL_DTBS=y, as set by eg. allmodconfig, we see lots of
> >> warnings about our dts files, such as:
> &g
Atheros AR8035
Ready to go images and install instruction can be found @OpenWrt.
Signed-off-by: Chris Blake
Signed-off-by: Christian Lamparter
---
rfc v1 -> v2:
- use new led naming scheme
- space-vs-tab snafu cleanup
- remove led-aliases (openwrt speci
> "4c"
For now, this has been kept as-is.
Signed-off-by: Christian Lamparter
---
rfc -> v1:
- no changes
v2 -> v3:
- incorporated pcie@d node-name switch
---
arch/powerpc/boot/dts/bluestone.dts | 458 +++-
1 file changed, 104 insertions(+
ill enable/disable the nodes for the device.
This device boots from a u-boot on a 512 KiB NOR Flash onto a
Linux image stored on one of the harddrives.
Ready to go images and install instruction can be found @OpenWrt.org
Signed-off-by: Christian Lamparter
---
rfc v1 -> v2:
- use new LED
ned-off-by: Chris Blake
Signed-off-by: Christian Lamparter
---
rfc v1 -> v2:
- removed PKA (this CryptoPU will need driver)
- stick with compatibles, nodes, ... from either
Bluestone (APM82181) or Canyonlands (PPC460EX).
- add labels for NAND and NOR to help wi
Hello,
I've been holding on to these devices dts' for a while now.
But ever since the recent purge of the PPC405, I'm feeling
the urge to move forward.
The devices in question have been running with OpenWrt since
around 2016/2017. Back then it was linux v4.4 and required
many out-of-tree patches
make a binding for the various boards based on the
AppliedMicro/APM APM82181 SoC.
Signed-off-by: Christian Lamparter
---
.../bindings/powerpc/4xx/apm,apm82181.yaml| 29 +++
1 file changed, 29 insertions(+)
create mode 100644
Documentation/devicetree/bindings/powerpc/4xx
On 2020-06-23 15:03, Michael Ellerman wrote:
With CONFIG_OF_ALL_DTBS=y, as set by eg. allmodconfig, we see lots of
warnings about our dts files, such as:
arch/powerpc/boot/dts/glacier.dts:492.26-532.5:
Warning (pci_bridge): /plb/pciex@d: node name is not "pci"
or "pcie"
The nod
> "4c"
For now, this has been kept as-is.
Signed-off-by: Christian Lamparter
---
arch/powerpc/boot/dts/bluestone.dts | 458 +++-
1 file changed, 104 insertions(+), 354 deletions(-)
diff --git a/arch/powerpc/boot/dts/bluestone.dts
b/arch/powerpc/boot/dts/
Atheros AR8035
Ready to go images and install instruction can be found @OpenWrt.
Signed-off-by: Chris Blake
Signed-off-by: Christian Lamparter
---
- rfc v1 -> v2:
- use new led naming scheme
- space-vs-tab snafu cleanup
- remove led-aliases (openwrt speci
ill enable/disable the nodes for the device.
This device boots from a u-boot on a 512 KiB NOR Flash onto a
Linux image stored on one of the harddrives.
Ready to go images and install instruction can be found @OpenWrt.org
Signed-off-by: Christian Lamparter
---
- rfc v1 -> v2:
- use new LED
; 'pci_bridge'
Signed-off-by: Chris Blake
Signed-off-by: Christian Lamparter
---
- rfc v1 -> v2:
- removed PKA (this CryptoPU will need driver)
- stick with compatibles, nodes, ... from either
Bluestone (APM82181) or Canyonlands (PPC460EX).
- add labels
60 - (Could be next)
Netgear WNDR4700 - Needs DSA for the AR8327
Note2: I do have a stash of extensive APM82181 related documentation.
Christian Lamparter (4):
powerpc: apm82181: create shared dtsi for APM bluestone
powerpc: apm82181: add WD MyBook Live NAS
powerpc: apm82181: add Meraki
ned-off-by: Christian Lamparter
---
v1 -> v2:
Split from Meraki MR32 upstreaming attempt. (Florian Fainelli)
(This patch will be needed for the MR24 upstreaming series as well)
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file changed, 2 insertions(+)
bus_num): Failed prerequisite
> 'pci_bridge'
Signed-off-By: Chris Blake
Signed-off-by: Christian Lamparter
---
arch/powerpc/boot/dts/apm82181.dtsi | 485
1 file changed, 485 insertions(+)
create mode 100644 arch/powerpc/boot/dts/apm82181.dtsi
diff --
This patch adds the device-tree definitions for Meraki MR24
Accesspoint devices.
Ready to go images and install instruction can be found @OpenWrt.
Signed-off-By: Chris Blake
Signed-off-by: Christian Lamparter
---
arch/powerpc/boot/dts/meraki-mr24.dts | 237 +
arch
s DSA for the AR8327
Netgear WNDAP620/WNDAP660 - (Could be next)
Netgear WNDR4700 - Needs DSA for the AR8327
Note2: I do have a stash of extensive APM82181 related documentation.
Christian Lamparter (4):
powerpc: apm82181: create shared dtsi for APM bluestone
powerpc: apm82181: add WD M
> "4c"
For now, this has been kept alone.
Signed-off-by: Christian Lamparter
---
arch/powerpc/boot/dts/bluestone.dts | 456 +++-
1 file changed, 109 insertions(+), 347 deletions(-)
diff --git a/arch/powerpc/boot/dts/bluestone.dts
b/arch/powerpc/boot/dts/
Ready to go images and install instruction can be found @OpenWrt.org
Signed-off-by: Christian Lamparter
---
arch/powerpc/boot/dts/wd-mybooklive.dts| 199 +
arch/powerpc/platforms/44x/ppc44x_simple.c | 3 +-
2 files changed, 201 insertions(+), 1 deletion(-)
create mode 1
(Sorry for the bounces, yes my smarthost mail setup breaks from time to time
and I had to cut the CC since it complained about the length.)
On Saturday, 28 March 2020 12:17:58 CET Christophe Leroy wrote:
>
> Le 27/03/2020 à 15:14, Andy Shevchenko a écrit :
>> On Fri, Mar 27, 2020 at 02:22:55PM +0
irq's
type and polarity.
Signed-off-by: Christian Lamparter
---
arch/powerpc/platforms/4xx/uic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/4xx/uic.c b/arch/powerpc/platforms/4xx/uic.c
index 31f12ad37a98..36fb66ce54cf 100644
--- a/arch/powerpc/platforms/4xx/
th
> >>> simpleImage on TP-Link TL-WDR4900 (Freescale P1014 processor).
> >>>
> >>> Suggested-by: Christian Lamparter
> >>> Signed-off-by: Pawel Dembicki
> >>> ---
> >>> arch/powerpc/Kconfig | 2 +-
> >>> 1 file change
On Friday, February 8, 2019 2:02:41 PM CET Michael Ellerman wrote:
> On Thu, 2019-01-31 at 20:59:04 UTC, Christian Lamparter wrote:
> > Enable kernel XZ compression option on 44x.
> > Tested on a Western Digital - MyBook Live NAS.
> > It takes 22 seconds for the 800 MHz CPU
Enable kernel XZ compression option on 44x.
Tested on a Western Digital - MyBook Live NAS.
It takes 22 seconds for the 800 MHz CPU to decompress
and boot a 2.63 MiB XZ-compressed kernel simpleImage.
Signed-off-by: Christian Lamparter
---
arch/powerpc/Kconfig | 2 +-
1 file changed, 1 insertion
On Tuesday, January 8, 2019 10:54:28 AM CET Michael Ellerman wrote:
> Christian Lamparter writes:
> > On Wednesday, January 2, 2019 12:31:50 PM CET Michael Ellerman wrote:
> >> On Tue, 2019-01-01 at 03:56:00 UTC, Michael Ellerman wrote:
> >> > Currently the code
On Wednesday, January 2, 2019 12:31:50 PM CET Michael Ellerman wrote:
> On Tue, 2019-01-01 at 03:56:00 UTC, Michael Ellerman wrote:
> > Currently the code produces several warnings, eg:
> >
> > arch/powerpc/platforms/4xx/ocm.c:240:38: error: format '%llx'
> > expects argument of type 'long lon
operands to binary |
| (have ‘int’ and ‘pgprot_t’ {aka ‘struct ’})
|_PAGE_EXEC | PAGE_KERNEL);
| ^
Fixes: 56f3c1413f5c ("powerpc/mm: properly set PAGE_KERNEL flags in ioremap()")
Signed-off-by: Christian Lamparter
---
arch/powerpc/platforms/4xx/ocm.c | 4 ++
On Saturday, December 22, 2018 2:08:02 PM CET christophe leroy wrote:
>
> Le 22/12/2018 à 12:27, Christian Lamparter a écrit :
> > On Saturday, December 22, 2018 11:59:04 AM CET christophe leroy wrote:
> >>
> >> Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
&
On Saturday, December 22, 2018 11:59:04 AM CET christophe leroy wrote:
>
> Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
> > This patch fixes a recent regression in ocm:
> >
> > ocm.c: In function ‘ocm_init_node’:
> > ocm.c:182:18: error: invalid operand
This patch fixes a recent regression in ocm:
ocm.c: In function ‘ocm_init_node’:
ocm.c:182:18: error: invalid operands to binary |
ocm.c:197:17: error: invalid operands to binary |
Fixes: 56f3c1413f5c ("powerpc/mm: properly set PAGE_KERNEL flags in ioremap()")
Signed-off-by: Christian
cross-compiled
vanilla 4.20-rc7. I can report that the box didn't crash, though I would
have liked to test with DMA_DEBUG.
Tested-by: Christian Lamparter
> ---
> drivers/crypto/amcc/crypto4xx_core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git
On Sunday, December 16, 2018 6:19:46 PM CET Christoph Hellwig wrote:
> This function is internal to the DMA API implementation. Instead use the
> DMA API to properly unmap. Note that the DMA API usage in this driver
> is a disaster and urgently needs some work - it is missing all the unmaps,
> se
fixes both the debugfs_create_dir()
and debugfs_create_file() check, so this will work as
expected.
Signed-off-by: Christian Lamparter
---
arch/powerpc/platforms/4xx/ocm.c | 11 ---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/4xx/ocm.c b/arch/powerpc/plat
On Thursday, November 1, 2018 12:45:00 PM CET Michael Ellerman wrote:
> Hi Christian,
>
> Christian Lamparter writes:
> > Previously, the kernel would complain:
> >
> > | debugfs ppc4xx ocm: failed to create file
> >
> > But the "info" file w
fixes both the debugfs_create_dir()
and debugfs_create_file() check, so this will work as
expected.
Signed-off-by: Christian Lamparter
---
arch/powerpc/platforms/4xx/ocm.c | 7 ---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/4xx/ocm.c b/arch/powerpc/platforms/
ation."
C99 defines in 6.7.8.10 that: "
If an object that has static storage duration is not
initialized explicitly, then:
- if it has pointer type, it is initialized to a null pointer
[...]
"
Signed-off-by: Christian Lamparter
---
arch/powerpc/kernel/setup-common.c | 3 ---
1 file
On Saturday, September 30, 2017 10:25:45 AM CEST christophe leroy wrote:
>
> Le 28/09/2017 à 20:32, Christian Lamparter a écrit :
> > The mmu context on the 40x, 44x does not define pte_frag
> > entry. This causes gcc abort the compilation due to:
> >
> > setup-com
initialization to just
platforms that define the pte_frag variable in the
mmu context.
Signed-off-by: Christian Lamparter
---
arch/powerpc/kernel/setup-common.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/setup-common.c
b/arch/powerpc/kernel/setup
On Tuesday, September 26, 2017 9:25:30 PM CEST Christophe LEROY wrote:
>
> Le 26/09/2017 à 21:03, Christian Lamparter a écrit :
> > The mmu context on the 40x, 44x does not define pte_frag
> > entry. This causes gcc abort the compilation due to:
> >
> > setup-com
initialization to just
platforms that define the pte_frag variable in the
mmu context.
Signed-off-by: Christian Lamparter
---
arch/powerpc/kernel/setup-common.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/setup-common.c
b/arch/powerpc/kernel/setup
On Monday, November 21, 2016 7:32:30 PM CET John Youn wrote:
> On 11/21/2016 1:10 PM, Christian Lamparter wrote:
> > On Monday, November 21, 2016 12:16:31 PM CET John Youn wrote:
> >> On 11/18/2016 12:18 PM, Christian Lamparter wrote:
> >>> On Friday, November 18, 2
Hello John,
On Monday, November 21, 2016 12:16:31 PM CET John Youn wrote:
> On 11/18/2016 12:18 PM, Christian Lamparter wrote:
> > On Friday, November 18, 2016 8:16:08 AM CET Rob Herring wrote:
> >> On Thu, Nov 17, 2016 at 04:35:10PM +0100, Stefan Wahren wrote:
> >&g
On Friday, November 11, 2016 2:20:42 PM CET John Youn wrote:
> On 11/11/2016 2:05 PM, Christian Lamparter wrote:
> > On Friday, November 11, 2016 1:22:16 PM CET John Youn wrote:
> >> On 11/11/2016 12:59 PM, Christian Lamparter wrote:
> >>> This patch adds support
Hello,
On Friday, November 11, 2016 1:22:16 PM CET John Youn wrote:
> On 11/11/2016 12:59 PM, Christian Lamparter wrote:
> > This patch adds support for the "amcc,usb-otg" device
> > which is found in the PowerPC Canyonlands' dts.
> >
> > The
river wasn't
available at that time.
Note: The system can't use the generic "snps,dwc2" compatible
because of the special ahbcfg configuration. The default
GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang
when the USB and SATA is used concurrently.
Cc: Felipe Balbi
ned-off-by: Christian Lamparter
---
drivers/usb/dwc2/params.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index 5d822c5..222a83c 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -1157,9 +1157,6 @@ s
On Tuesday, May 17, 2016 04:50:48 PM John Youn wrote:
> On 5/14/2016 6:11 AM, Christian Lamparter wrote:
> > On Thursday, May 12, 2016 11:40:28 AM John Youn wrote:
> >> On 5/12/2016 6:30 AM, Christian Lamparter wrote:
> >>> On Thursday, May 12, 2016 01:55:44 PM
On Friday, May 13, 2016 03:52:27 PM Arnd Bergmann wrote:
> A patch that went into Linux-4.4 to fix big-endian mode on a Lantiq
> MIPS system unfortunately broke big-endian operation on PowerPC
> APM82181 as reported by Christian Lamparter, and likely other
> systems.
>
> It a
On Thursday, May 12, 2016 11:40:28 AM John Youn wrote:
> On 5/12/2016 6:30 AM, Christian Lamparter wrote:
> > On Thursday, May 12, 2016 01:55:44 PM Arnd Bergmann wrote:
> >> On Thursday 12 May 2016 11:58:18 Christian Lamparter wrote:
> >>>>>> Detecting
On Thursday, May 12, 2016 01:55:44 PM Arnd Bergmann wrote:
> On Thursday 12 May 2016 11:58:18 Christian Lamparter wrote:
> > > > > Detecting the endianess of the
> > > > > device is probably the best future-proof solution, but it's also
> > > >
inal
> patch would be even easier, but that would break the one big-endian
> MIPS machine we know about.
>
> > > Detecting the endianess of the
> > > device is probably the best future-proof solution, but it's also
> > > considerably more work to do in the dri
ain driver (i.e. drives to zero, threestated if
output bit is 1)
"
The ppc4xx_gpio.c driver is part of the platform/sysdev drivers
in arch/powerpc/sysdev.
Signed-off-by: Christian Lamparter
---
I looked into arch/powerpc/sysdev/ppc4xx_gpio.c driver and
it doesn't have support for
On Sunday, May 08, 2016 08:40:55 PM Benjamin Herrenschmidt wrote:
> On Sun, 2016-05-08 at 00:54 +0200, Christian Lamparter via Linuxppc-dev
> wrote:
> > I've been looking in getting the MyBook Live Duo's USB OTG port
> > to function. The SoC is a APM82181. Which ha
Hello,
I've been looking in getting the MyBook Live Duo's USB OTG port
to function. The SoC is a APM82181. Which has a PowerPC 464 core
and related to the supported canyonlands architecture in arch/powerpc/.
Currently in -next the dwc2 module doesn't load:
dwc2 4bff8.usbotg: dwc2_core_reset
On Sunday, April 24, 2016 09:05:43 AM Julian Margetson wrote:
> On 4/23/2016 3:41 PM, Christian Lamparter wrote:
> > There's a known errata for the 460EX, with the CPU lockup upon
> > high AHB traffic:
> > <http://lists.denx.de/pipermail/u-boot/2008-June/036078.html>
On Saturday, April 23, 2016 11:44:09 AM Julian Margetson wrote:
> On 4/23/2016 8:02 AM, Julian Margetson wrote:
> > On 4/22/2016 7:06 AM, Christian Lamparter wrote:
> >> On Friday, April 22, 2016 06:50:44 AM Julian Margetson wrote:
> >>> On 4/21/2016 4:25 PM, Christ
On Friday, April 22, 2016 11:32:00 AM David Laight wrote:
> From: Andy Shevchenko
> > Sent: 21 April 2016 19:15
> > ata_sff_qc_issue() can't handle DMA commands and thus we have to avoid it
> > for
> > them. Do call ata_bmdma_qc_issue() instead for this case.
On Friday, April 22, 2016 06:50:44 AM Julian Margetson wrote:
> On 4/21/2016 4:25 PM, Christian Lamparter wrote:
> > On Thursday, April 21, 2016 09:15:21 PM Andy Shevchenko wrote:
> >> The last approach in the commit 8b3444852a2b ("sata_dwc_460ex: move to
> >> gen
I applied all the patches in
this series on top of the topic/dw branch of Vinod Koul:
<https://git.kernel.org/cgit/linux/kernel/git/vkoul/slave-dma.git/>
Tested-by: Christian Lamparter
---
results for my old ST3808110AS HDD. filesystem is ext4.
# hdparm -t /dev/sda
/dev/sda:
Timing buf
On Monday, April 18, 2016 05:59:39 PM Herbert Xu wrote:
> Christian Lamparter wrote:
> >
> > I tried to move ppc4xx-rng into crypto4xx (see attachment - patch #1).
> > The driver works as is. But I can't come up with a way to attach the
> > crypto4xx driver t
On Tuesday, April 05, 2016 08:11:19 PM Herbert Xu wrote:
> Christian Lamparter wrote:
> >
> > The crash is caused by a bad read in ppc4xx_rng_enable [0]. From what I
> > can tell, the driver is mapping the crypto control registers. The
> > problem is that they are
[see patch]. I would like to move the
trng into the crypto-ppc4xx, but given that this breaks some of the DTS
out there I'm not sure.
Regards,
Christian
---
From 2159e200fcb68f88a94b1d5570d6000c100133a8 Mon Sep 17 00:00:00 2001
From: Christian Lamparter
Date: Fri, 25 Mar 2016 19:00:05 +0100
S
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