linux-toradex.git/arch/mn10300/kernel/asm-offsets.c, branch v3.17

MN10300: fix SMP synchronization between txdma and serial driver

2012-12-12T15:46:14+00:00

The SoC serial port driver uses a high priority interrupt to handle tx of
characters in the tx ring buffer. The driver needs to disable/enable this IRQ
from outside of irq context. The original code to do this is not foolproof on
SMP machines because the IRQ running on one core could still access the serial
port for a short time after the driver running on another core disables the
interrupt. This patch adds a flag to tell the IRQ handler that the driver
wants to disable the interrupt. After seeing the flag, the IRQ handler will
immediately disable the interrupt and exit. After setting the flag, the driver
will wait for interrupt to be disabled by the IRQ handler.

Signed-off-by: Mark Salter 
Signed-off-by: David Howells

MN10300: Save frame pointer in thread_info struct rather than global var

2010-10-27T16:29:01+00:00

Save the current exception frame pointer in the thread_info struct rather than
in a global variable as the latter makes SMP tricky, especially when preemption
is also enabled.

This also replaces __frame with current_frame() and rearranges header file
inclusions to make it all compile.

Signed-off-by: David Howells 
Acked-by: Akira Takeuchi

MN10300: And Panasonic AM34 subarch and implement SMP

2010-10-27T16:28:55+00:00

Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for
MN10300.  Also implement support for the MN2WS0060 processor and the ASB2364
evaluation board which are AM34 based.

Signed-off-by: Akira Takeuchi 
Signed-off-by: Kiyoshi Owada 
Signed-off-by: David Howells

MN10300: Make the FPU operate in non-lazy mode under SMP

2010-10-27T16:28:52+00:00

Make the FPU operate in non-lazy mode under SMP so that when the process that
is currently using the FPU migrates to a different CPU, we don't have to ping
its previous CPU to flush the FPU context.

Signed-off-by: Akira Takeuchi 
Signed-off-by: Kiyoshi Owada 
Signed-off-by: David Howells

MN10300: Handle removal of struct uart_info

2009-09-23T17:15:21+00:00

Commit ebd2c8f6d2ec4012c267ecb95e72a57b8355a705 removed struct uart_info and
commit bdc04e3174e18f475289fa8f4144f66686326b7e further moved delta_msr_wait.
Fix up the MN10300 on-chip serial port drivers to comply with this.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

serial: kill off uart_info

2009-09-19T20:13:28+00:00

We moved this into uart_state, now move the fields out of the separate
structure and kill it off.

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

mn10300: use kbuild.h instead of defining macros in asm-offsets.c

2008-04-29T15:06:30+00:00

Signed-off-by: Christoph Lameter 
Cc: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mn10300: add the MN10300/AM33 architecture to the kernel

2008-02-08T17:22:30+00:00

Add architecture support for the MN10300/AM33 CPUs produced by MEI to the
kernel.

This patch also adds board support for the ASB2303 with the ASB2308 daughter
board, and the ASB2305.  The only processor supported is the MN103E010, which
is an AM33v2 core plus on-chip devices.

[akpm@linux-foundation.org: nuke cvs control strings]
Signed-off-by: Masakazu Urade 
Signed-off-by: Koichi Yasutake 
Signed-off-by: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds