linux-toradex.git/drivers/mmc/card/queue.h, branch v3.6.8

mmc: block: add handling for two parallel block requests in issue_rw_rq

2011-07-20T21:21:15+00:00

Change mmc_blk_issue_rw_rq() to become asynchronous.
The execution flow looks like this:

* The mmc-queue calls issue_rw_rq(), which sends the request
  to the host and returns back to the mmc-queue.
* The mmc-queue calls issue_rw_rq() again with a new request.
* This new request is prepared in issue_rw_rq(), then it waits for
  the active request to complete before pushing it to the host.
* When the mmc-queue is empty it will call issue_rw_rq() with a NULL
  req to finish off the active request without starting a new request.

Signed-off-by: Per Forlin 
Acked-by: Kyungmin Park 
Acked-by: Arnd Bergmann 
Reviewed-by: Venkatraman S 
Tested-by: Sourav Poddar 
Tested-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: queue: add a second mmc queue request member

2011-07-20T21:21:15+00:00

Add an additional mmc queue request instance to make way for two active
block requests. One request may be active while the other request is
being prepared.

Signed-off-by: Per Forlin 
Acked-by: Kyungmin Park 
Acked-by: Arnd Bergmann 
Reviewed-by: Venkatraman S 
Tested-by: Sourav Poddar 
Tested-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: block: add member in mmc queue struct to hold request data

2011-07-20T21:21:13+00:00

The way the request data is organized in the mmc queue struct, it only
allows processing of one request at a time.  This patch adds a new struct
to hold mmc queue request data such as sg list, request, blk request and
bounce buffers, and updates any functions depending on the mmc queue
struct. This prepares for using multiple active requests in one mmc queue.

Signed-off-by: Per Forlin 
Acked-by: Kyungmin Park 
Acked-by: Arnd Bergmann 
Reviewed-by: Venkatraman S 
Tested-by: Sourav Poddar 
Tested-by: Linus Walleij 
Signed-off-by: Chris Ball

mmc: queue: append partition subname to queue thread name

2011-06-25T22:52:57+00:00

For example, an eMMC with 2 boot partitions will have 3 threads.
The names change from:

   40 ?        00:00:00 mmcqd/0
   41 ?        00:00:00 mmcqd/0
   42 ?        00:00:00 mmcqd/0

to:

   40 ?        00:00:00 mmcqd/0
   41 ?        00:00:00 mmcqd/0boot0
   42 ?        00:00:00 mmcqd/0boot1

Signed-off-by: Adrian Hunter 
Cc: Andrei Warkentin 
Signed-off-by: Chris Ball

mmc: bounce requests for simple hosts

2007-07-09T19:22:53+00:00

Some hosts cannot do scatter/gather in hardware. Since not doing sg
is such a big performance hit, we (optionally) bounce the requests
to a simple linear buffer that we hand over to the driver.

Signed-off-by: Pierre Ossman

mmc: clean up unused parts of block driver

2007-05-24T04:51:02+00:00

Remove dead code and unused structs from the block driver.

Signed-off-by: Pierre Ossman

mmc: Move host and card drivers to subdirs

2007-05-01T11:04:17+00:00

Clean up the drivers/mmc directory by moving card and host drivers
into subdirectories.

Signed-off-by: Pierre Ossman