linux-toradex.git/drivers/scsi/ufs, branch v3.12-rc2

[SCSI] ufs: configure the attribute for power mode

2013-09-06T23:08:37+00:00

UIC attributes can be set with using DME_SET command for
power mode change. For configuration the link capability
attributes are used, which is updated after successful
link startup.

Signed-off-by: Seungwon Jeon 
Reviewed-by: Subhash Jadavani 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: add operation for the uic power mode change

2013-09-06T23:06:40+00:00

Setting PA_PWRMode using DME_SET triggers the power mode
change. And then the result will be given by the HCS.UPMCRS.
This operation should be done atomically.

Signed-off-by: Seungwon Jeon 
Reviewed-by: Subhash Jadavani 
Tested-by: Yaniv Gardi 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: add dme configuration primitives

2013-09-06T23:01:41+00:00

Implements to support GET and SET operations of the DME.
These operations are used to configure the behavior of
the UNIPRO. Along with basic operation, {Peer/AttrSetType}
can be mixed.

Signed-off-by: Seungwon Jeon 
Reviewed-by: Subhash Jadavani 
Tested-by: Yaniv Gardi 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: fix the setting interrupt aggregation counter

2013-09-06T23:00:53+00:00

IACTH(Interrupt aggregation counter threshold) value is allowed
up to 0x1F and current setting value is the maximum.
This value is related with NUTRS(max:0x20) of HCI's capability.
Considering HCI controller doesn't support the maximum, IACTH
setting should be adjusted with possible value.
For that, existing 'ufshcd_config_int_aggr' is split into two part
[reset, configure].

Signed-off-by: Seungwon Jeon 
Reviewed-by: Subhash Jadavani 
Tested-by: Yaniv Gardi 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: find out sense data over scsi status values

2013-09-06T22:57:55+00:00

Unlike 'GOOD' and 'CHECK CONDITION', other status values in
Response UPIU may or may not contain sense data. That is returning
sense data isn't obvious. So, in this case the Data Segment Length
field should be checked. If a non-zero value, it means that UPIU
has Sense Data in the Data Segment area.

Signed-off-by: Seungwon Jeon 
Reviewed-by: Subhash Jadavani 
Tested-by: Yaniv Gardi 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: don't check resource with devm_ioremap_resource

2013-08-26T08:51:29+00:00

devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufshcd-pltfrm: remove redundant dev_err call in ufshcd_pltfrm_probe()

2013-08-26T08:51:29+00:00

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: don't stop controller before scsi_remove_host()

2013-08-26T08:51:28+00:00

scsi_remove_host() sends SYNCHRONIZE CACHE commands for write cache
enabled scsi disk devices.  So stopping controller working shouldn't
be done before scsi_remove_host().

Signed-off-by: Akinobu Mita 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufs: don't disable_irq() if the IRQ can be shared among devices

2013-08-26T08:51:27+00:00

When removing the UFS driver, disable_irq() is called and the IRQ is
not enabled again.  Unfortunately, the IRQ is requested with IRQF_SHARED
and it can be shared among several devices.  So disabling the IRQ in
this way is just breaking other devices which are sharing the IRQ.

Signed-off-by: Akinobu Mita 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley

[SCSI] ufshcd-pci: release ioremapped region during removing driver

2013-08-26T08:51:27+00:00

Before commit 2953f850c3b80bdca004967c83733365d8aa0aa2 ("[SCSI] ufs:
use devres functions for ufshcd"), UFSHCI register was ioremapped by
each glue-driver (ufshcd-pltfrm and ufshcd-pci) during probing and it
was iounmapped by core-driver during removing driver.  The commit
converted ufshcd-pltfrm to use devres functions, but it didn't convert
ufshcd-pci.

Therefore, the change causes ufshcd-pci driver not to iounmap UFSHCI
register region during removing driver.  This fixes it by converting
ufshcd-pci to use devres functions.

Signed-off-by: Akinobu Mita 
Signed-off-by: Santosh Y 
Signed-off-by: James Bottomley