Hi Wolfram!
Thanks a lot for your comments!
[snip]
+ * as the chip can be only either a 5200B or not. */
+static int is_mpc5200b = -1;
+
+
One empty line too much. Maybe we can also get rid of the static later in
the
process, but first things first.
Ooops
[snip]
+ if
[snip]
+ if (is_mpc5200b == 1)
+ return mpc5xxx_get_bus_frequency(p) * 4;
+ else
+ return mpc5xxx_get_bus_frequency(p) / 2;
Isn't this wrong? You can also have /32 on the 5200B (the fallback).
Yes, but I do all /calculations/ with the /4 prescaler for higher
Hi Wolfram:
[snip]
Yes, but I do all /calculations/ with the /4 prescaler for higher
accuracy.
If the divisor exceeds the available 16 bits of the counter reg, I round
(divisor / 8) to use the /32 prescaler. Think of a 19-bit counter value,
where I can choose to use either the lower or
Hi,
I'm running linux-2.6.33 on a custom board based on 460EX.
There's a PCI-PCI bridge on this board, PLX 6254, and a single
hot-pluggable device behind the bridge.
When this device is plugged in before system boots everything works
fine: bridge and device are properly recognized by kernel,
Hi!
On Sat, Feb 27, 2010 at 11:05:32AM +0530, Kumar Gopalpet-B05799 wrote:
[...]
Understood, and thanks for the explanation. Am I correct in saying that
this is
due to the out-of-order execution capability on powerpc ?
Nope, that was just a logic issue in the driver.
Though, with the patch,
On Sat, 2010-02-27 at 21:21 +1100, Michael Neuling wrote:
In message 11927.1267010...@neuling.org you wrote:
If there's less the group will normally be balanced and we fall out and
end up in check_asym_packing().
So what I tried doing with that loop is detect if there's a hole in
On Mar 1, 2010, at 1:13 PM, Dave Kleikamp wrote:
powerpc/booke: Add Stack Marking support to Booke Exception Prolog
From: Torez Smith lnxto...@linux.vnet.ibm.com
Signed-off-by: Torez Smith lnxto...@linux.vnet.ibm.com
Signed-off-by: Dave Kleikamp sha...@linux.vnet.ibm.com
---
On Tue, 2010-03-02 at 08:50 -0600, Kumar Gala wrote:
On Mar 1, 2010, at 1:13 PM, Dave Kleikamp wrote:
powerpc/booke: Add Stack Marking support to Booke Exception Prolog
From: Torez Smith lnxto...@linux.vnet.ibm.com
Signed-off-by: Torez Smith lnxto...@linux.vnet.ibm.com
This should be handled using a new compatible-entry
fsl,mpc5200b-psc-uart.
I agree that this would be a lot cleaner, but it's also a lot more
intrusive.
CC'ing the device tree discussion list here... comments, please!!
Why intrusive? Maybe I miss something?
Not for
This set of tries to optimize the TLB code on 8xx even
more. If they work, it should be a noticable performance
boost.
I would be very happy if you could test them for me.
- v2:
Since Scott has done some testing of these patches I resend
them with my SOB.
Scott, can you bless these
Only modules will cause ITLB Misses as we always pin
the first 8MB of kernel memory.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
arch/powerpc/kernel/head_8xx.S |4
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/head_8xx.S
This removes a couple of insn's from the TLB Miss
handlers whithout changing functionality.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
arch/powerpc/kernel/head_8xx.S | 11 +++
1 files changed, 3 insertions(+), 8 deletions(-)
diff --git
Only the swap function cares about the ACCESSED bit in
the pte. Do not waste cycles updateting ACCESSED when swap
is not compiled into the kernel.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
arch/powerpc/kernel/head_8xx.S |6 --
1 files changed, 4 insertions(+), 2
This avoids storing these registers in memory.
CPU6 errata will still use the old way.
Remove some G2 leftover accesses from 2.4
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
arch/powerpc/kernel/head_8xx.S | 49 +--
1 files changed, 36
On Mon, 1 Mar 2010, Albert Herranz wrote:
If transfer_buffer_length is 0 then do nothing.
Otherwise if num_sgs 0 then do nothing.
Otherwise if URB_NO_TRANSFER_DMA_MAP and transfer_dma
are both set (this avoids your HCD_NO_COHERENT_MEM
case) then do
On 10-03-01 06:03 PM, v...@vsbe.com wrote:
sounds very much like this issue:
http://linux.derkeiler.com/Mailing-Lists/Kernel/2010-02/msg09470.html
Thanks for the link.
(interrupt storm on the second port which is hit with breaks).
It's not the uart driver problem per se, the below
Alan Stern wrote:
On Mon, 1 Mar 2010, Albert Herranz wrote:
If transfer_buffer_length is 0 then do nothing.
Otherwise if num_sgs 0 then do nothing.
Otherwise if URB_NO_TRANSFER_DMA_MAP and transfer_dma
are both set (this avoids your HCD_NO_COHERENT_MEM
On Tue, 2 Mar 2010, Albert Herranz wrote:
Currently this URB doesn't require PIO is always true, but in the
future it won't be.
Can this be currently tested?
Not yet, but soon. You can follow the gory details in this email
thread:
On Tue, Mar 2, 2010 at 1:09 AM, Albrecht Dreß albrecht.dr...@arcor.de wrote:
+ /* Check only once if we are running on a mpc5200b or not */
+ if (is_mpc5200b == -1) {
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, fsl,mpc5200b-immr);
This
On Tue, Mar 2, 2010 at 1:56 AM, Albrecht Dreß albrecht.dr...@arcor.de wrote:
Hi Wolfram:
[snip]
Yes, but I do all /calculations/ with the /4 prescaler for higher
accuracy.
If the divisor exceeds the available 16 bits of the counter reg, I round
(divisor / 8) to use the /32 prescaler.
Hi Albrecht,
Thanks for this work, comment below...
On Mon, Mar 1, 2010 at 11:11 AM, Albrecht Dreß albrecht.dr...@arcor.de wrote:
On the MPC5200B, select the baud rate prescaler as /4 by default to make very
high baud rates (e.g. 3 MBaud) accessible and to achieve a higher precision
for high
On Tue, Mar 2, 2010 at 8:27 AM, Paul Gortmaker
paul.gortma...@windriver.com wrote:
On 10-03-01 06:03 PM, v...@vsbe.com wrote:
sounds very much like this issue:
http://linux.derkeiler.com/Mailing-Lists/Kernel/2010-02/msg09470.html
Thanks for the link.
(interrupt storm on the second port
Seems that IOMMU_VMERGE option description gives the false
information:
http://marc.info/?l=linux-sparcm=126753808727669w=2
http://marc.info/?l=linux-sparcm=126753880528825w=2
IOMMU_VMERGE is unnecessary nowadays so how about removing it?
=
From: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
Hi all,
next-20100302 (and next-20100301) produce this log during boot on a
Power5 lpar.
calling .hvc_vio_init+0x0/0x34 @ 1
=
[ INFO: possible recursive locking detected ]
2.6.33-autokern1 #1
-
swapper/1
On Wed, 2010-03-03 at 08:54 +0900, FUJITA Tomonori wrote:
Seems that IOMMU_VMERGE option description gives the false
information:
http://marc.info/?l=linux-sparcm=126753808727669w=2
http://marc.info/?l=linux-sparcm=126753880528825w=2
IOMMU_VMERGE is unnecessary nowadays so how about
On Wed, 03 Mar 2010 11:13:52 +1100
Michael Ellerman mich...@ellerman.id.au wrote:
On Wed, 2010-03-03 at 08:54 +0900, FUJITA Tomonori wrote:
Seems that IOMMU_VMERGE option description gives the false
information:
http://marc.info/?l=linux-sparcm=126753808727669w=2
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