linux-toradex.git/drivers/block/nvme-core.c, branch v3.13.2

DMA-API: block: nvme-core: replace dma_set_mask()+dma_set_coherent_mask() with new helper

2013-09-21T20:02:24+00:00

Replace the following sequence:

	dma_set_mask(dev, mask);
	dma_set_coherent_mask(dev, mask);

with a call to the new helper dma_set_mask_and_coherent().

Signed-off-by: Russell King

NVMe: Merge issue on character device bring-up

2013-09-06T20:26:58+00:00

A recent patch made it possible to bring up the character handle when the
device is responsive but not accepting a set-features command. Another
recent patch moved the initialization that requires we move where the
checks for this condition occur. This patch merges these two ideas so
it works much as before.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Handle ioremap failure

2013-09-03T20:44:25+00:00

Decrement the number of queues required for doorbell remapping until
the memory is successfully mapped for that size.

Additional checks are done so that we don't call free_irq if it has
already been freed.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Add pci suspend/resume driver callbacks

2013-09-03T20:44:16+00:00

Used for going in and out of low power states. Resuming reuses the IO
queues from the previous initialization, freeing any allocated queues
that are no longer usable.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Use normal shutdown

2013-09-03T20:40:32+00:00

The NVMe spec recommends using the shutdown normal sequence when safely
taking the controller offline instead of hitting CC.EN on the next
start-up to reset the controller. The spec recommends a minimum of 1
second for the shutdown complete. This patch waits 2 seconds to be on
the safe side.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Separate controller init from disk discovery

2013-09-03T20:40:28+00:00

This combines the controller initialization into one function, removing
IO queue setup from namespace discovery, and creates symetric functions
for device removal. The controller start and shutdown functions can now
be called from resume/suspend context as well as probe/remove.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Separate queue alloc/free from create/delete

2013-09-03T20:39:28+00:00

This separates nvme queue allocation from creation, and queue deletion
from freeing. This is so that we may in the future temporarily disable
queues and reuse the same memory when bringing them back online, like
coming back from suspend state.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Group pci related actions in functions

2013-09-03T20:39:25+00:00

This will make it easier to reuse these outside probe/remove.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Disk stats for read/write commands only

2013-09-03T20:33:35+00:00

Flush and discard requests would previously mess up the accounting.

Signed-off-by: Keith Busch 
Signed-off-by: Matthew Wilcox

NVMe: Bring up cdev on set feature failure

2013-09-03T20:32:26+00:00

This patch creates the character device as long as a device's admin queues
are usable so a user has an opprotunity to perform administration tasks.
A device may be in a state that does not allow IO and setting the queue
count feature in such a state returns an error. Previously the driver
would bail and the controller would be unusable.

Signed-off-by: Keith Busch