Add several PCI capability and extended capability ID registers
in the swap_case driver, so that we can add test case for
dm_pci_find_capability() and dm_pci_find_ext_capability().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

This adds a U_BOOT_PCI_DEVICE() declaration to the swap_case driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

With the newly added testing of more than one device, we get:

  => ut dm pci_swapcase
  Test: dm_test_pci_swapcase: pci.c
  test/dm/pci.c:88, dm_test_pci_swapcase(): "tHIS IS A tESt" = ptr:
  Expected "tHIS IS A tESt", got "this is a test"
  Test: dm_test_pci_swapcase: pci.c (flat tree)
  test/dm/pci.c:88, dm_test_pci_swapcase(): "tHIS IS A tESt" = ptr:
  Expected "tHIS IS A tESt", got "this is a test"
  Failures: 2

The failure only happens on the 2nd swap_case device on the PCI bus.
The case passes on the 1st device.

It turns out the swap_case driver does not emulate bit#0 in BAR
registers as a read-only bit. This corrects the implementation.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

At present the code overruns the bar[] array. Fix this.

At the same time, drop the leading / from the "/spl" path so that we can
run U-Boot SPL with:

   spl/u-boot-spl

rather than requiring:

   /path/to/spl/u-boot-spl

Reported-by: Coverity (CID: 131199)

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

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>

These files use error numbering, so add the include.

Signed-off-by: Simon Glass <sjg@chromium.org>

This device sits on the sandbox PCI bus and provides a case-swapping
service for sandbox. It illustrates the use of both PCI I/O and PCI
memory accesses.

Signed-off-by: Simon Glass <sjg@chromium.org>