linux-toradex.git/drivers/idle, branch v2.6.32.31

ioat: switch watchdog and reset handler from workqueue to timer

2009-09-09T00:30:24+00:00

In order to support dynamic resizing of the descriptor ring or polling
for a descriptor in the presence of a hung channel the reset handler
needs to make progress while in a non-preemptible context.  The current
workqueue implementation precludes polling channel reset completion
under spin_lock().

This conversion also allows us to return to opportunistic cleanup in the
ioat2 case as the timer implementation guarantees at least one cleanup
after every descriptor is submitted.  This means the worst case
completion latency becomes the timer frequency (for exceptional
circumstances), but with the benefit of avoiding busy waiting when the
lock is contended.

Signed-off-by: Maciej Sosnowski 
Signed-off-by: Dan Williams

ioat: move to drivers/dma/ioat/

2009-07-28T21:32:12+00:00

When first created the ioat driver was the only inhabitant of
drivers/dma/.  Now, it is the only multi-file (more than a .c and a .h)
driver in the directory.  Moving it to an ioat/ subdirectory allows the
naming convention to be cleaned up, and allows for future splitting of
the source files by hardware version (v1, v2, and v3).

Signed-off-by: Maciej Sosnowski 
Signed-off-by: Dan Williams

i7300_idle: allow testing on i5000-series hardware w/o re-compile

2009-05-29T00:52:40+00:00

Testing the i7300_idle driver on i5000-series hardware required
an edit to i7300_idle.h to "#define SUPPORT_I5000 1" and a re-build
of both i7300_idle and ioat_dma.

Replace that build-time scheme with a load-time module parameter:
"7300_idle.forceload=1" to make it easier to test the driver
on hardware that while not officially validated, works fine
and is much more commonly available.

By default (no modparam) the driver will continue to load
only on the i7300.

Note that ioat_dma runs a copy of i7300_idle's probe routine
to know to reserve an IOAT channel for i7300_idle.
This change makes ioat_dma do that always on the i5000,
just like it does on the i7300.

Signed-off-by: Len Brown 
Acked-by: Andrew Henroid

dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)

2009-04-07T15:31:10+00:00

Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)

Signed-off-by: Yang Hongyang
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06T18:44:39+00:00

CC: Andy Henroid 
Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

i7300_idle: Kconfig, show menu only on x86_64

2008-10-28T04:14:47+00:00

...since today it contains only a single driver
which is visible to just x86_64

Signed-off-by: Venkatesh Pallipadi 
Signed-off-by: Len Brown

i7300_idle: Cleanup based review comments

2008-10-24T16:55:14+00:00

Cleanup of i7300 idle driver based on review comments from Randy Dunlap,
Andi Kleen and Len Brown.

Signed-off-by: Venkatesh Pallipadi 
Signed-off-by: Len Brown

i7300_idle: Disable ioat channel only on platforms where ile driver can load

2008-10-24T16:54:18+00:00

Based on input from Andi Kleen:
share the platform detection code with ioat_dma and disable the channel in
dma engine only for specific platforms.

Signed-off-by: Venkatesh Pallipadi 
Signed-off-by: Len Brown

i7300_idle driver v1.55

2008-10-22T03:58:41+00:00

The Intel 7300 Memory Controller supports dynamic throttling of memory which can
be used to save power when system is idle. This driver does the memory
throttling when all CPUs are idle on such a system.

Refer to "Intel 7300 Memory Controller Hub (MCH)" datasheet
for the config space description.

Signed-off-by: Andy Henroid 
Signed-off-by: Len Brown 
Signed-off-by: Venkatesh Pallipadi