Commit Graph

24 Commits

Author SHA1 Message Date
Faiz Abbas
8fbac8e23e scsi: Add dma direction member to command structure
Some SCSI devices like UFS use DMA for executing scsi commands and hence
need to know the direction of transfer of the dma. Add a dma_dir element
to the command structure to facilitate this.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-10-23 20:47:12 -04:00
Faiz Abbas
d48f00ed11 scsi: Retry inquiry 3 times to overcome Unit Attention condition
The UFS SCSI device LUNs are observed to return failure the first time a
unit ready inquiry is sent and pass on the second try. Send this
inquiry 3 times to make sure device is ready.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-10-23 20:47:12 -04:00
Faiz Abbas
4ff572830e scsi: Add max_bytes_per_req to scsi_platdata
Add max_bytes_per_req to scsi_platdata to enable the host driver to limit
the number of bytes that can be read/written per request.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-10-23 20:47:12 -04:00
Faiz Abbas
66c54f1a3e scsi: Simplify scsi_read()/_write()
With no non-DM driver using scsi_read()/_write() APIs, remove
the legacy implementations.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
[trini: Reorder slightly and mark scsi_read/write behind BLK test to
avoid warnings]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-10-23 20:47:12 -04:00
Simon Glass
168068fb3d env: Move env_set_ulong() to env.h
Move env_set_ulong() over to the new header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Heinrich Schuchardt
90037d4c73 dm: scsi: report correct device number
Before the patch scsi would report the same device number for all SCSI
devices, e.g.

  Device 0: (1:0) Vendor: ATA Prod.: Crucial_CT128M55 Rev: MU01
            Type: Hard Disk
            Capacity: 122104.3 MB = 119.2 GB (250069680 x 512)
  Device 0: (1:0) Vendor: ATA Prod.:  Rev:
            Type: Hard Disk
            Capacity: not available

With the patch the same device number is reported as is used in
scsi_read():

  Device 0: (1:0) Vendor: ATA Prod.: Crucial_CT128M55 Rev: MU01
            Type: Hard Disk
            Capacity: 122104.3 MB = 119.2 GB (250069680 x 512)
  Device 1: (1:0) Vendor: ATA Prod.:  Rev:
            Type: Hard Disk
            Capacity: not available

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-02-19 08:55:43 -05:00
Bin Meng
d0851c8937 blk: Call part_init() in the post_probe() method
part_init() is currently called in every DM BLK driver, either
in its bind() or probe() method. However we can use the BLK
uclass driver's post_probe() method to do it automatically.

Update all DM BLK drivers to adopt this change.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:27 -08:00
Masahiro Yamada
dee37fc99d Remove <inttypes.h> includes and PRI* usages in printf() entirely
In int-ll64.h, we always use the following typedefs:

  typedef unsigned int         u32;
  typedef unsigned long        uintptr_t;
  typedef unsigned long long   u64;

This does not need to match to the compiler's <inttypes.h>.
Do not include it.

The use of PRI* makes the code super-ugly.  You can simply use
"l" for printing uintptr_t, "ll" for u64, and no modifier for u32.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-09-10 20:48:17 -04:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Adam Ford
1811a928c6 Move most CONFIG_HAVE_BLOCK_DEVICE to Kconfig
config_fallbacks.h has some logic that sets HAVE_BLOCK_DEVICE
based on a list of enabled options.  Moving HAVE_BLOCK_DEVICE to
Kconfig allows us to drastically shrink the logic in
config_fallbacks.h

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Rename HAVE_BLOCK_DEVICE to CONFIG_BLOCK_DEVICE]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-02-08 19:09:03 -05:00
Jean-Jacques Hiblot
5fe7702ecc blk: dm: make blk_create_device() take a number of block instead of a size
There is an overflow problem when taking the size instead of the number
of blocks in blk_create_device(). This results in a wrong device size: the
device apparent size is its real size  modulo 4GB.
Using the number of blocks instead of the device size fixes the problem and
is more coherent with the internals of the block layer.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-11 21:43:58 -06:00
Simon Glass
018f530323 env: Rename common functions related to setenv()
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 <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:23:32 -04:00
Simon Glass
c4d660d4d0 dm: mmc: Allow disabling driver model in SPL
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 <sjg@chromium.org>
2017-08-01 11:58:00 +09:00
Simon Glass
7337fcd8c0 dm: scsi: Drop scsi_init() when driver model is used
This function should not be used with driver model. Update the code to
reflect this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
5c56176318 dm: scsi: Split out the bus scanning code
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
f6580ef39b dm: scsi: Adjust return value of scsi_exec()
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
f6ab5a92ac dm: scsi: Add operations for SCSI devices
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
8eab1a58dd dm: scsi: Document and rename the scsi_scan() parameter
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
4682c8a19b dm: scsi: Add a device pointer to scan_exec(), scsi_bus_reset()
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
7cf1afce7f dm: ahci: Unwind the confusing init code
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
099c239d68 dm: scsi: Indent the confusing #ifdefs
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 <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
1dc64f6c00 dm: scsi: Use the uclass platform data
At present the two driver-model SCSI drivers use device platform data to
store information that relates to the uclass. It is better to use uclass
platform data in this situation. Update the code to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
b9560ad649 dm: scsi: Drop the ccb typedef
We should not be using typedefs in U-Boot and 'ccb' is a pretty short
name. It is also used with variables. Drop the typedef and use 'struct'
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00
Simon Glass
0fcd48fe00 scsi: Move drivers into new drivers/scsi directory
At present we have the SCSI drivers in the drivers/block and common/
directories. It is better to split them out into their own place. Use
drivers/scsi which is what Linux does.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-07-11 10:08:19 -06:00