u-boot.git/drivers/scsi, branch v2017.09

env: Rename common functions related to setenv()

2017-08-16T12:23:32+00:00

We are now using an env_ prefix for environment functions. Rename these
commonly used functions, for consistency. Also add function comments in
common.h.

Suggested-by: Wolfgang Denk 
Signed-off-by: Simon Glass

dm: mmc: Allow disabling driver model in SPL

2017-08-01T02:58:00+00:00

At present if U-Boot proper uses driver model for MMC, then SPL has to
also. While this is desirable, it places a significant barrier to moving
to driver model in some cases. For example, with a space-constrained SPL
it may be necessary to enable CONFIG_SPL_OF_PLATDATA which involves
adjusting some drivers.

Add new SPL versions of the options for DM_MMC, DM_MMC_OPS and BLK. By
default these follow their non-SPL versions, but this can be changed by
boards which need it.

Signed-off-by: Simon Glass

dm: scsi: Drop scsi_init() when driver model is used

2017-07-11T16:08:19+00:00

This function should not be used with driver model. Update the code to
reflect this.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Split out the bus scanning code

2017-07-11T16:08:19+00:00

Split out the code that scans a single SCSI bus into a separate function.
This will allow it to be used from driver model.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Adjust return value of scsi_exec()

2017-07-11T16:08:19+00:00

Change this function to return an error number instead of true/false.
This allows us to return a proper error number.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Add operations for SCSI devices

2017-07-11T16:08:19+00:00

The SCSI uclass currently has no operations. It just uses the global SCSI
functions. Fix this by adding operations to the only two drivers that use
the uclass, and replacing the global functions with those defined locally
in the SCSI code.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Document and rename the scsi_scan() parameter

2017-07-11T16:08:19+00:00

The 'mode' parameter is actually a flag to determine whether to display
a list of devices found during the scan. Rename it to reflect this, add a
function comment and adjust callers to use a boolean.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Add a device pointer to scan_exec(), scsi_bus_reset()

2017-07-11T16:08:19+00:00

With driver model these functions need a device pointer. Add one even
when CONFIG_DM_SCSI is not defined. This avoids having ugly conditional
function prototypes, When CONFIG_DM_SCSI is not defined we can just ignore
the pointer.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: ahci: Unwind the confusing init code

2017-07-11T16:08:19+00:00

Two AHCI drivers use SCSI with CONFIG_DM_SCSI. The SCSI uclass calls
scsi_low_level_init() which is implemented by ahci.c. If
CONFIG_SCSI_AHCI_PLAT is defined it does one thing and if it is not
it does something else.

We don't need to call through scsi_low_level_init() to get the init
completed. Instead, adjust the two drivers to call into AHCI directly.
Drop the post-probe init in the SCSI uclass. This means that driver model
doesn't need to use scsi_low_level_init(). It is a legacy function and
driver model should use a driver's probe() method instead.

While we are here, add a comment to the top of the file explaining what
ahci.c does.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: scsi: Indent the confusing #ifdefs

2017-07-11T16:08:19+00:00

These are very confusing without some sort of indentation. At some point
we will be able to remove them, but for now, indent them.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng