linux-stable.git/drivers/mmc/card/queue.c, branch v3.2

mmc: core: mmc sanitize feature support for v4.5

2011-10-26T20:32:26+00:00

In the v4.5, there's no secure erase & trim support.
Instead it supports the sanitize feature.

Signed-off-by: Kyungmin Park 
Signed-off-by: Jaehoon Chung 
Signed-off-by: Chris Ball

mmc: replace printk with appropriate display macro

2011-10-26T20:32:22+00:00

All the files using printk function for displaying kernel messages
in the mmc driver have been replaced with corresponding macro.

Signed-off-by: Girish K S 
Signed-off-by: Chris Ball

mmc: queue: declare mmc_alloc_sg as static

2011-10-26T19:43:35+00:00

Fix the sparse warning "drivers/mmc/card/queue.c:111:20: warning:
symbol 'mmc_alloc_sg' was not declared. Should it be static?"

Signed-off-by: Venkatraman S 
Signed-off-by: Chris Ball

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: let host controllers specify maximum discard timeout

2011-07-20T21:21:03+00:00

Some host controllers will not operate without a hardware
timeout that is limited in value.  However large discards
require large timeouts, so there needs to be a way to
specify the maximum discard size.

A host controller driver may now specify the maximum discard
timeout possible so that max_discard_sectors can be calculated.

However, for eMMC when the High Capacity Erase Group Size
is not in use, the timeout calculation depends on clock
rate which may change.  For that case Preferred Erase Size
is used instead.

Signed-off-by: Adrian Hunter 
Signed-off-by: Chris Ball

mmc: queue: bring discard_granularity/alignment into line with SCSI

2011-06-25T22:53:05+00:00

SCSI defines discard alignment as the offset to the first
optimal discard.  In the case of SD/MMC, that is always zero
which is the default.

SCSI defines discard granularity as a hint of a optimal
discard size.  That is much better expressed by the MMC
"preferred erase size" (pref_erase) field.

Signed-off-by: Adrian Hunter 
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: remove redundant irq disabling

2011-05-25T00:59:17+00:00

There is no need to disable irq's when using the sg_copy_*_buffer()
functions because those functions do that already. There are also
no races for the mm_queue struct here that would require the irq's
to be disabled before calling sg_copy_*_buffer().

Signed-off-by: John Ogness 
Signed-off-by: Chris Ball